* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
static int_eximarith_t expanded_string_integer(const uschar *, BOOL);
#ifdef STAND_ALONE
-#ifndef SUPPORT_CRYPTEQ
-#define SUPPORT_CRYPTEQ
-#endif
+# ifndef SUPPORT_CRYPTEQ
+# define SUPPORT_CRYPTEQ
+# endif
#endif
#ifdef LOOKUP_LDAP
-#include "lookups/ldap.h"
+# include "lookups/ldap.h"
#endif
#ifdef SUPPORT_CRYPTEQ
-#ifdef CRYPT_H
-#include <crypt.h>
-#endif
-#ifndef HAVE_CRYPT16
+# ifdef CRYPT_H
+# include <crypt.h>
+# endif
+# ifndef HAVE_CRYPT16
extern char* crypt16(char*, char*);
-#endif
+# endif
#endif
/* The handling of crypt16() is a mess. I will record below the analysis of the
(standard crypt does 25 rounds). It then crypts the next 8 characters,
or an empty block if the password is less than 9 characters, using a
20-round version of crypt and the same salt as was used for the first
-block. Charaters after the first 16 are ignored. It always generates
+block. Characters after the first 16 are ignored. It always generates
a 16-byte hash, which is expressed together with the salt as a string
of 24 base 64 digits. Here are some links to peruse:
static uschar *item_table[] = {
US"acl",
+ US"authresults",
US"certextract",
US"dlfunc",
US"env",
#endif
US"length",
US"listextract",
+ US"listquote",
US"lookup",
US"map",
US"nhash",
US"run",
US"sg",
US"sort",
+#ifdef EXPERIMENTAL_SRS_NATIVE
+ US"srs_encode",
+#endif
US"substr",
US"tr" };
enum {
EITEM_ACL,
+ EITEM_AUTHRESULTS,
EITEM_CERTEXTRACT,
EITEM_DLFUNC,
EITEM_ENV,
#endif
EITEM_LENGTH,
EITEM_LISTEXTRACT,
+ EITEM_LISTQUOTE,
EITEM_LOOKUP,
EITEM_MAP,
EITEM_NHASH,
EITEM_RUN,
EITEM_SG,
EITEM_SORT,
+#ifdef EXPERIMENTAL_SRS_NATIVE
+ EITEM_SRS_ENCODE,
+#endif
EITEM_SUBSTR,
EITEM_TR };
static uschar *op_table_main[] = {
US"address",
US"addresses",
+ US"base32",
+ US"base32d",
US"base62",
US"base62d",
US"base64",
US"base64d",
+ US"bless",
US"domain",
US"escape",
+ US"escape8bit",
US"eval",
US"eval10",
US"expand",
US"rxquote",
US"s",
US"sha1",
+ US"sha2",
US"sha256",
+ US"sha3",
US"stat",
US"str2b64",
US"strlen",
enum {
EOP_ADDRESS = nelem(op_table_underscore),
EOP_ADDRESSES,
+ EOP_BASE32,
+ EOP_BASE32D,
EOP_BASE62,
EOP_BASE62D,
EOP_BASE64,
EOP_BASE64D,
+ EOP_BLESS,
EOP_DOMAIN,
EOP_ESCAPE,
+ EOP_ESCAPE8BIT,
EOP_EVAL,
EOP_EVAL10,
EOP_EXPAND,
EOP_RXQUOTE,
EOP_S,
EOP_SHA1,
+ EOP_SHA2,
EOP_SHA256,
+ EOP_SHA3,
EOP_STAT,
EOP_STR2B64,
EOP_STRLEN,
US"exists",
US"first_delivery",
US"forall",
+ US"forall_json",
+ US"forall_jsons",
US"forany",
+ US"forany_json",
+ US"forany_jsons",
US"ge",
US"gei",
US"gt",
US"gti",
+#ifdef EXPERIMENTAL_SRS_NATIVE
+ US"inbound_srs",
+#endif
US"inlist",
US"inlisti",
US"isip",
ECOND_EXISTS,
ECOND_FIRST_DELIVERY,
ECOND_FORALL,
+ ECOND_FORALL_JSON,
+ ECOND_FORALL_JSONS,
ECOND_FORANY,
+ ECOND_FORANY_JSON,
+ ECOND_FORANY_JSONS,
ECOND_STR_GE,
ECOND_STR_GEI,
ECOND_STR_GT,
ECOND_STR_GTI,
+#ifdef EXPERIMENTAL_SRS_NATIVE
+ ECOND_INBOUND_SRS,
+#endif
ECOND_INLIST,
ECOND_INLISTI,
ECOND_ISIP,
} alblock;
static uschar * fn_recipients(void);
+typedef uschar * stringptr_fn_t(void);
+static uschar * fn_queue_size(void);
/* This table must be kept in alphabetical order. */
{ "address_data", vtype_stringptr, &deliver_address_data },
{ "address_file", vtype_stringptr, &address_file },
{ "address_pipe", vtype_stringptr, &address_pipe },
+#ifdef EXPERIMENTAL_ARC
+ { "arc_domains", vtype_string_func, (void *) &fn_arc_domains },
+ { "arc_oldest_pass", vtype_int, &arc_oldest_pass },
+ { "arc_state", vtype_stringptr, &arc_state },
+ { "arc_state_reason", vtype_stringptr, &arc_state_reason },
+#endif
{ "authenticated_fail_id",vtype_stringptr, &authenticated_fail_id },
{ "authenticated_id", vtype_stringptr, &authenticated_id },
{ "authenticated_sender",vtype_stringptr, &authenticated_sender },
{ "dcc_header", vtype_stringptr, &dcc_header },
{ "dcc_result", vtype_stringptr, &dcc_result },
#endif
-#ifdef WITH_OLD_DEMIME
- { "demime_errorlevel", vtype_int, &demime_errorlevel },
- { "demime_reason", vtype_stringptr, &demime_reason },
-#endif
#ifndef DISABLE_DKIM
{ "dkim_algo", vtype_dkim, (void *)DKIM_ALGO },
{ "dkim_bodylength", vtype_dkim, (void *)DKIM_BODYLENGTH },
{ "dkim_key_testing", vtype_dkim, (void *)DKIM_KEY_TESTING },
{ "dkim_selector", vtype_stringptr, &dkim_signing_selector },
{ "dkim_signers", vtype_stringptr, &dkim_signers },
- { "dkim_verify_reason", vtype_dkim, (void *)DKIM_VERIFY_REASON },
- { "dkim_verify_status", vtype_dkim, (void *)DKIM_VERIFY_STATUS},
+ { "dkim_verify_reason", vtype_stringptr, &dkim_verify_reason },
+ { "dkim_verify_status", vtype_stringptr, &dkim_verify_status },
#endif
-#ifdef EXPERIMENTAL_DMARC
- { "dmarc_ar_header", vtype_stringptr, &dmarc_ar_header },
+#ifdef SUPPORT_DMARC
{ "dmarc_domain_policy", vtype_stringptr, &dmarc_domain_policy },
{ "dmarc_status", vtype_stringptr, &dmarc_status },
{ "dmarc_status_text", vtype_stringptr, &dmarc_status_text },
{ "exim_path", vtype_stringptr, &exim_path },
{ "exim_uid", vtype_uid, &exim_uid },
{ "exim_version", vtype_stringptr, &version_string },
-#ifdef WITH_OLD_DEMIME
- { "found_extension", vtype_stringptr, &found_extension },
-#endif
- { "headers_added", vtype_string_func, &fn_hdrs_added },
+ { "headers_added", vtype_string_func, (void *) &fn_hdrs_added },
{ "home", vtype_stringptr, &deliver_home },
{ "host", vtype_stringptr, &deliver_host },
{ "host_address", vtype_stringptr, &deliver_host_address },
{ "host_lookup_deferred",vtype_int, &host_lookup_deferred },
{ "host_lookup_failed", vtype_int, &host_lookup_failed },
{ "host_port", vtype_int, &deliver_host_port },
+ { "initial_cwd", vtype_stringptr, &initial_cwd },
{ "inode", vtype_ino, &deliver_inode },
{ "interface_address", vtype_stringptr, &interface_address },
{ "interface_port", vtype_int, &interface_port },
{ "local_part", vtype_stringptr, &deliver_localpart },
{ "local_part_data", vtype_stringptr, &deliver_localpart_data },
{ "local_part_prefix", vtype_stringptr, &deliver_localpart_prefix },
+ { "local_part_prefix_v", vtype_stringptr, &deliver_localpart_prefix_v },
{ "local_part_suffix", vtype_stringptr, &deliver_localpart_suffix },
+ { "local_part_suffix_v", vtype_stringptr, &deliver_localpart_suffix_v },
+ { "local_part_verified", vtype_stringptr, &deliver_localpart_verified },
+#ifdef HAVE_LOCAL_SCAN
{ "local_scan_data", vtype_stringptr, &local_scan_data },
+#endif
{ "local_user_gid", vtype_gid, &local_user_gid },
{ "local_user_uid", vtype_uid, &local_user_uid },
{ "localhost_number", vtype_int, &host_number },
{ "prvscheck_result", vtype_stringptr, &prvscheck_result },
{ "qualify_domain", vtype_stringptr, &qualify_domain_sender },
{ "qualify_recipient", vtype_stringptr, &qualify_domain_recipient },
+ { "queue_name", vtype_stringptr, &queue_name },
+ { "queue_size", vtype_string_func, &fn_queue_size },
{ "rcpt_count", vtype_int, &rcpt_count },
{ "rcpt_defer_count", vtype_int, &rcpt_defer_count },
{ "rcpt_fail_count", vtype_int, &rcpt_fail_count },
{ "received_ip_address", vtype_stringptr, &interface_address },
{ "received_port", vtype_int, &interface_port },
{ "received_protocol", vtype_stringptr, &received_protocol },
- { "received_time", vtype_int, &received_time },
+ { "received_time", vtype_int, &received_time.tv_sec },
{ "recipient_data", vtype_stringptr, &recipient_data },
{ "recipient_verify_failure",vtype_stringptr,&recipient_verify_failure },
- { "recipients", vtype_string_func, &fn_recipients },
+ { "recipients", vtype_string_func, (void *) &fn_recipients },
{ "recipients_count", vtype_int, &recipients_count },
#ifdef WITH_CONTENT_SCAN
{ "regex_match_string", vtype_stringptr, ®ex_match_string },
{ "smtp_active_hostname", vtype_stringptr, &smtp_active_hostname },
{ "smtp_command", vtype_stringptr, &smtp_cmd_buffer },
{ "smtp_command_argument", vtype_stringptr, &smtp_cmd_argument },
+ { "smtp_command_history", vtype_string_func, (void *) &smtp_cmd_hist },
{ "smtp_count_at_connection_start", vtype_int, &smtp_accept_count },
{ "smtp_notquit_reason", vtype_stringptr, &smtp_notquit_reason },
{ "sn0", vtype_filter_int, &filter_sn[0] },
{ "spam_score", vtype_stringptr, &spam_score },
{ "spam_score_int", vtype_stringptr, &spam_score_int },
#endif
-#ifdef EXPERIMENTAL_SPF
+#ifdef SUPPORT_SPF
{ "spf_guess", vtype_stringptr, &spf_guess },
{ "spf_header_comment", vtype_stringptr, &spf_header_comment },
{ "spf_received", vtype_stringptr, &spf_received },
{ "spf_result", vtype_stringptr, &spf_result },
+ { "spf_result_guessed", vtype_bool, &spf_result_guessed },
{ "spf_smtp_comment", vtype_stringptr, &spf_smtp_comment },
#endif
{ "spool_directory", vtype_stringptr, &spool_directory },
{ "srs_db_key", vtype_stringptr, &srs_db_key },
{ "srs_orig_recipient", vtype_stringptr, &srs_orig_recipient },
{ "srs_orig_sender", vtype_stringptr, &srs_orig_sender },
+#endif
+#if defined(EXPERIMENTAL_SRS) || defined(EXPERIMENTAL_SRS_NATIVE)
{ "srs_recipient", vtype_stringptr, &srs_recipient },
+#endif
+#ifdef EXPERIMENTAL_SRS
{ "srs_status", vtype_stringptr, &srs_status },
#endif
{ "thisaddress", vtype_stringptr, &filter_thisaddress },
{ "tls_in_bits", vtype_int, &tls_in.bits },
{ "tls_in_certificate_verified", vtype_int, &tls_in.certificate_verified },
{ "tls_in_cipher", vtype_stringptr, &tls_in.cipher },
+ { "tls_in_cipher_std", vtype_stringptr, &tls_in.cipher_stdname },
{ "tls_in_ocsp", vtype_int, &tls_in.ocsp },
{ "tls_in_ourcert", vtype_cert, &tls_in.ourcert },
{ "tls_in_peercert", vtype_cert, &tls_in.peercert },
{ "tls_in_peerdn", vtype_stringptr, &tls_in.peerdn },
-#if defined(SUPPORT_TLS)
+#ifdef EXPERIMENTAL_TLS_RESUME
+ { "tls_in_resumption", vtype_int, &tls_in.resumption },
+#endif
+#ifndef DISABLE_TLS
{ "tls_in_sni", vtype_stringptr, &tls_in.sni },
#endif
+ { "tls_in_ver", vtype_stringptr, &tls_in.ver },
{ "tls_out_bits", vtype_int, &tls_out.bits },
{ "tls_out_certificate_verified", vtype_int,&tls_out.certificate_verified },
{ "tls_out_cipher", vtype_stringptr, &tls_out.cipher },
-#ifdef EXPERIMENTAL_DANE
+ { "tls_out_cipher_std", vtype_stringptr, &tls_out.cipher_stdname },
+#ifdef SUPPORT_DANE
{ "tls_out_dane", vtype_bool, &tls_out.dane_verified },
#endif
{ "tls_out_ocsp", vtype_int, &tls_out.ocsp },
{ "tls_out_ourcert", vtype_cert, &tls_out.ourcert },
{ "tls_out_peercert", vtype_cert, &tls_out.peercert },
{ "tls_out_peerdn", vtype_stringptr, &tls_out.peerdn },
-#if defined(SUPPORT_TLS)
+#ifdef EXPERIMENTAL_TLS_RESUME
+ { "tls_out_resumption", vtype_int, &tls_out.resumption },
+#endif
+#ifndef DISABLE_TLS
{ "tls_out_sni", vtype_stringptr, &tls_out.sni },
#endif
-#ifdef EXPERIMENTAL_DANE
+#ifdef SUPPORT_DANE
{ "tls_out_tlsa_usage", vtype_int, &tls_out.tlsa_usage },
#endif
+ { "tls_out_ver", vtype_stringptr, &tls_out.ver },
{ "tls_peerdn", vtype_stringptr, &tls_in.peerdn }, /* mind the alphabetical order! */
-#if defined(SUPPORT_TLS)
+#ifndef DISABLE_TLS
{ "tls_sni", vtype_stringptr, &tls_in.sni }, /* mind the alphabetical order! */
#endif
static uschar *mtable_sticky[] =
{ US"--T", US"--t", US"-wT", US"-wt", US"r-T", US"r-t", US"rwT", US"rwt" };
+/* flags for find_header() */
+#define FH_EXISTS_ONLY BIT(0)
+#define FH_WANT_RAW BIT(1)
+#define FH_WANT_LIST BIT(2)
/*************************************************
}
+
+static uschar * base32_chars = US"abcdefghijklmnopqrstuvwxyz234567";
+
/*************************************************
* Binary chop search on a table *
*************************************************/
BOOL
expand_check_condition(uschar *condition, uschar *m1, uschar *m2)
{
-int rc;
-uschar *ss = expand_string(condition);
-if (ss == NULL)
+uschar * ss = expand_string(condition);
+if (!ss)
{
- if (!expand_string_forcedfail && !search_find_defer)
+ if (!f.expand_string_forcedfail && !f.search_find_defer)
log_write(0, LOG_MAIN|LOG_PANIC, "failed to expand condition \"%s\" "
"for %s %s: %s", condition, m1, m2, expand_string_message);
return FALSE;
}
-rc = ss[0] != 0 && Ustrcmp(ss, "0") != 0 && strcmpic(ss, US"no") != 0 &&
+return *ss && Ustrcmp(ss, "0") != 0 && strcmpic(ss, US"no") != 0 &&
strcmpic(ss, US"false") != 0;
-return rc;
}
However, if we're stuck unable to provide this, then we'll fall back to
appallingly bad randomness.
-If SUPPORT_TLS is defined then this will not be used except as an emergency
+If DISABLE_TLS is not defined then this will not be used except as an emergency
fallback.
Arguments:
Returns a random number in range [0, max-1]
*/
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
# define vaguely_random_number vaguely_random_number_fallback
#endif
int
vaguely_random_number(int max)
{
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
# undef vaguely_random_number
#endif
- static pid_t pid = 0;
- pid_t p2;
-#if defined(HAVE_SRANDOM) && !defined(HAVE_SRANDOMDEV)
- struct timeval tv;
-#endif
+static pid_t pid = 0;
+pid_t p2;
- p2 = getpid();
- if (p2 != pid)
+if ((p2 = getpid()) != pid)
+ {
+ if (pid != 0)
{
- if (pid != 0)
- {
#ifdef HAVE_ARC4RANDOM
- /* cryptographically strong randomness, common on *BSD platforms, not
- so much elsewhere. Alas. */
-#ifndef NOT_HAVE_ARC4RANDOM_STIR
- arc4random_stir();
-#endif
+ /* cryptographically strong randomness, common on *BSD platforms, not
+ so much elsewhere. Alas. */
+# ifndef NOT_HAVE_ARC4RANDOM_STIR
+ arc4random_stir();
+# endif
#elif defined(HAVE_SRANDOM) || defined(HAVE_SRANDOMDEV)
-#ifdef HAVE_SRANDOMDEV
- /* uses random(4) for seeding */
- srandomdev();
-#else
- gettimeofday(&tv, NULL);
- srandom(tv.tv_sec | tv.tv_usec | getpid());
-#endif
+# ifdef HAVE_SRANDOMDEV
+ /* uses random(4) for seeding */
+ srandomdev();
+# else
+ {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ srandom(tv.tv_sec | tv.tv_usec | getpid());
+ }
+# endif
#else
- /* Poor randomness and no seeding here */
+ /* Poor randomness and no seeding here */
#endif
- }
- pid = p2;
}
+ pid = p2;
+ }
#ifdef HAVE_ARC4RANDOM
- return arc4random() % max;
+return arc4random() % max;
#elif defined(HAVE_SRANDOM) || defined(HAVE_SRANDOMDEV)
- return random() % max;
+return random() % max;
#else
- /* This one returns a 16-bit number, definitely not crypto-strong */
- return random_number(max);
+/* This one returns a 16-bit number, definitely not crypto-strong */
+return random_number(max);
#endif
}
read_name(uschar *name, int max, const uschar *s, uschar *extras)
{
int ptr = 0;
-while (*s != 0 && (isalnum(*s) || Ustrchr(extras, *s) != NULL))
+while (*s && (isalnum(*s) || Ustrchr(extras, *s) != NULL))
{
if (ptr < max-1) name[ptr++] = *s;
s++;
Returns: a pointer to the character after the last digit
*/
+/*XXX consider expanding to int_eximarith_t. But the test for
+"overbig numbers" in 0002 still needs to overflow it. */
static uschar *
read_number(int *n, uschar *s)
*/
static uschar *
-expand_getkeyed(uschar *key, const uschar *s)
+expand_getkeyed(uschar * key, const uschar * s)
{
int length = Ustrlen(key);
-while (isspace(*s)) s++;
+Uskip_whitespace(&s);
/* Loop to search for the key */
-while (*s != 0)
+while (*s)
{
int dkeylength;
- uschar *data;
- const uschar *dkey = s;
+ uschar * data;
+ const uschar * dkey = s;
- while (*s != 0 && *s != '=' && !isspace(*s)) s++;
+ while (*s && *s != '=' && !isspace(*s)) s++;
dkeylength = s - dkey;
- while (isspace(*s)) s++;
- if (*s == '=') while (isspace((*(++s))));
+ if (Uskip_whitespace(&s) == '=') while (isspace(*++s));
data = string_dequote(&s);
if (length == dkeylength && strncmpic(key, dkey, length) == 0)
return data;
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
}
return NULL;
static uschar *
expand_getlistele(int field, const uschar * list)
{
-const uschar * tlist= list;
-int sep= 0;
+const uschar * tlist = list;
+int sep = 0;
uschar dummy;
-if(field<0)
+if (field < 0)
{
- for(field++; string_nextinlist(&tlist, &sep, &dummy, 1); ) field++;
- sep= 0;
+ for (field++; string_nextinlist(&tlist, &sep, &dummy, 1); ) field++;
+ sep = 0;
}
-if(field==0) return NULL;
-while(--field>0 && (string_nextinlist(&list, &sep, &dummy, 1))) ;
+if (field == 0) return NULL;
+while (--field > 0 && (string_nextinlist(&list, &sep, &dummy, 1))) ;
return string_nextinlist(&list, &sep, NULL, 0);
}
/* Certificate fields, by name. Worry about by-OID later */
/* Names are chosen to not have common prefixes */
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
typedef struct
{
uschar * name;
expand_getcertele(uschar * field, uschar * certvar)
{
var_entry * vp;
-certfield * cp;
if (!(vp = find_var_ent(certvar)))
{
if (*field >= '0' && *field <= '9')
return tls_cert_ext_by_oid(*(void **)vp->value, field, 0);
-for(cp = certfields;
- cp < certfields + nelem(certfields);
- cp++)
+for (certfield * cp = certfields;
+ cp < certfields + nelem(certfields);
+ cp++)
if (Ustrncmp(cp->name, field, cp->namelen) == 0)
{
uschar * modifier = *(field += cp->namelen) == ','
string_sprintf("bad field selector \"%s\" for certextract", field);
return NULL;
}
-#endif /*SUPPORT_TLS*/
+#endif /*DISABLE_TLS*/
/*************************************************
* Extract a substring from a string *
/* If value2 is unset, just compute one number */
if (value2 < 0)
- {
- s = string_sprintf("%d", total % value1);
- }
+ s = string_sprintf("%lu", total % value1);
/* Otherwise do a div/mod hash */
else
{
total = total % (value1 * value2);
- s = string_sprintf("%d/%d", total/value2, total % value2);
+ s = string_sprintf("%lu/%lu", total/value2, total % value2);
}
*len = Ustrlen(s);
specific headers that contain lists of addresses, a comma is inserted between
them. Otherwise we use a straight concatenation. Because some messages can have
pathologically large number of lines, there is a limit on the length that is
-returned. Also, to avoid massive store use which would result from using
-string_cat() as it copies and extends strings, we do a preliminary pass to find
-out exactly how much store will be needed. On "normal" messages this will be
-pretty trivial.
+returned.
Arguments:
name the name of the header, without the leading $header_ or $h_,
or NULL if a concatenation of all headers is required
- exists_only TRUE if called from a def: test; don't need to build a string;
- just return a string that is not "" and not "0" if the header
- exists
newsize return the size of memory block that was obtained; may be NULL
if exists_only is TRUE
- want_raw TRUE if called for $rh_ or $rheader_ variables; no processing,
- other than concatenating, will be done on the header. Also used
- for $message_headers_raw.
+ flags FH_EXISTS_ONLY
+ set if called from a def: test; don't need to build a string;
+ just return a string that is not "" and not "0" if the header
+ exists
+ FH_WANT_RAW
+ set if called for $rh_ or $rheader_ items; no processing,
+ other than concatenating, will be done on the header. Also used
+ for $message_headers_raw.
+ FH_WANT_LIST
+ Double colon chars in the content, and replace newline with
+ colon between each element when concatenating; returning a
+ colon-sep list (elements might contain newlines)
charset name of charset to translate MIME words to; used only if
want_raw is false; if NULL, no translation is done (this is
used for $bh_ and $bheader_)
*/
static uschar *
-find_header(uschar *name, BOOL exists_only, int *newsize, BOOL want_raw,
- uschar *charset)
+find_header(uschar *name, int *newsize, unsigned flags, uschar *charset)
{
-BOOL found = name == NULL;
-int comma = 0;
-int len = found? 0 : Ustrlen(name);
-int i;
-uschar *yield = NULL;
-uschar *ptr = NULL;
+BOOL found = !name;
+int len = name ? Ustrlen(name) : 0;
+BOOL comma = FALSE;
+gstring * g = NULL;
+
+for (header_line * h = header_list; h; h = h->next)
+ if (h->type != htype_old && h->text) /* NULL => Received: placeholder */
+ if (!name || (len <= h->slen && strncmpic(name, h->text, len) == 0))
+ {
+ uschar * s, * t;
+ size_t inc;
-/* Loop for two passes - saves code repetition */
+ if (flags & FH_EXISTS_ONLY)
+ return US"1"; /* don't need actual string */
-for (i = 0; i < 2; i++)
- {
- int size = 0;
- header_line *h;
+ found = TRUE;
+ s = h->text + len; /* text to insert */
+ if (!(flags & FH_WANT_RAW)) /* unless wanted raw, */
+ Uskip_whitespace(&s); /* remove leading white space */
+ t = h->text + h->slen; /* end-point */
- for (h = header_list; size < header_insert_maxlen && h != NULL; h = h->next)
- {
- if (h->type != htype_old && h->text != NULL) /* NULL => Received: placeholder */
- {
- if (name == NULL || (len <= h->slen && strncmpic(name, h->text, len) == 0))
- {
- int ilen;
- uschar *t;
+ /* Unless wanted raw, remove trailing whitespace, including the
+ newline. */
- if (exists_only) return US"1"; /* don't need actual string */
- found = TRUE;
- t = h->text + len; /* text to insert */
- if (!want_raw) /* unless wanted raw, */
- while (isspace(*t)) t++; /* remove leading white space */
- ilen = h->slen - (t - h->text); /* length to insert */
+ if (flags & FH_WANT_LIST)
+ while (t > s && t[-1] == '\n') t--;
+ else if (!(flags & FH_WANT_RAW))
+ {
+ while (t > s && isspace(t[-1])) t--;
- /* Unless wanted raw, remove trailing whitespace, including the
- newline. */
+ /* Set comma if handling a single header and it's one of those
+ that contains an address list, except when asked for raw headers. Only
+ need to do this once. */
- if (!want_raw)
- while (ilen > 0 && isspace(t[ilen-1])) ilen--;
+ if (name && !comma && Ustrchr("BCFRST", h->type)) comma = TRUE;
+ }
- /* Set comma = 1 if handling a single header and it's one of those
- that contains an address list, except when asked for raw headers. Only
- need to do this once. */
+ /* Trim the header roughly if we're approaching limits */
+ inc = t - s;
+ if (gstring_length(g) + inc > header_insert_maxlen)
+ inc = header_insert_maxlen - gstring_length(g);
+
+ /* For raw just copy the data; for a list, add the data as a colon-sep
+ list-element; for comma-list add as an unchecked comma,newline sep
+ list-elemment; for other nonraw add as an unchecked newline-sep list (we
+ stripped trailing WS above including the newline). We ignore the potential
+ expansion due to colon-doubling, just leaving the loop if the limit is met
+ or exceeded. */
+
+ if (flags & FH_WANT_LIST)
+ g = string_append_listele_n(g, ':', s, (unsigned)inc);
+ else if (flags & FH_WANT_RAW)
+ g = string_catn(g, s, (unsigned)inc);
+ else if (inc > 0)
+ g = string_append2_listele_n(g, comma ? US",\n" : US"\n",
+ s, (unsigned)inc);
+
+ if (gstring_length(g) >= header_insert_maxlen) break;
+ }
- if (!want_raw && name != NULL && comma == 0 &&
- Ustrchr("BCFRST", h->type) != NULL)
- comma = 1;
+if (!found) return NULL; /* No header found */
+if (!g) return US"";
- /* First pass - compute total store needed; second pass - compute
- total store used, including this header. */
+/* That's all we do for raw header expansion. */
- size += ilen + comma + 1; /* +1 for the newline */
+*newsize = g->size;
+if (flags & FH_WANT_RAW)
+ return string_from_gstring(g);
- /* Second pass - concatentate the data, up to a maximum. Note that
- the loop stops when size hits the limit. */
+/* Otherwise do RFC 2047 decoding, translating the charset if requested.
+The rfc2047_decode2() function can return an error with decoded data if the
+charset translation fails. If decoding fails, it returns NULL. */
- if (i != 0)
- {
- if (size > header_insert_maxlen)
- {
- ilen -= size - header_insert_maxlen - 1;
- comma = 0;
- }
- Ustrncpy(ptr, t, ilen);
- ptr += ilen;
+else
+ {
+ uschar * error, * decoded = rfc2047_decode2(string_from_gstring(g),
+ check_rfc2047_length, charset, '?', NULL, newsize, &error);
+ if (error)
+ DEBUG(D_any) debug_printf("*** error in RFC 2047 decoding: %s\n"
+ " input was: %s\n", error, g->s);
+ return decoded ? decoded : string_from_gstring(g);
+ }
+}
- /* For a non-raw header, put in the comma if needed, then add
- back the newline we removed above, provided there was some text in
- the header. */
- if (!want_raw && ilen > 0)
- {
- if (comma != 0) *ptr++ = ',';
- *ptr++ = '\n';
- }
- }
- }
- }
- }
- /* At end of first pass, return NULL if no header found. Then truncate size
- if necessary, and get the buffer to hold the data, returning the buffer size.
- */
- if (i == 0)
- {
- if (!found) return NULL;
- if (size > header_insert_maxlen) size = header_insert_maxlen;
- *newsize = size + 1;
- ptr = yield = store_get(*newsize);
- }
- }
+/* Append a "local" element to an Authentication-Results: header
+if this was a non-smtp message.
+*/
-/* That's all we do for raw header expansion. */
+static gstring *
+authres_local(gstring * g, const uschar * sysname)
+{
+if (!f.authentication_local)
+ return g;
+g = string_append(g, 3, US";\n\tlocal=pass (non-smtp, ", sysname, US")");
+if (authenticated_id) g = string_append(g, 2, " u=", authenticated_id);
+return g;
+}
-if (want_raw)
- {
- *ptr = 0;
- }
-/* Otherwise, remove a final newline and a redundant added comma. Then we do
-RFC 2047 decoding, translating the charset if requested. The rfc2047_decode2()
-function can return an error with decoded data if the charset translation
-fails. If decoding fails, it returns NULL. */
+/* Append an "iprev" element to an Authentication-Results: header
+if we have attempted to get the calling host's name.
+*/
+static gstring *
+authres_iprev(gstring * g)
+{
+if (sender_host_name)
+ g = string_append(g, 3, US";\n\tiprev=pass (", sender_host_name, US")");
+else if (host_lookup_deferred)
+ g = string_catn(g, US";\n\tiprev=temperror", 19);
+else if (host_lookup_failed)
+ g = string_catn(g, US";\n\tiprev=fail", 13);
else
- {
- uschar *decoded, *error;
- if (ptr > yield && ptr[-1] == '\n') ptr--;
- if (ptr > yield && comma != 0 && ptr[-1] == ',') ptr--;
- *ptr = 0;
- decoded = rfc2047_decode2(yield, check_rfc2047_length, charset, '?', NULL,
- newsize, &error);
- if (error != NULL)
- {
- DEBUG(D_any) debug_printf("*** error in RFC 2047 decoding: %s\n"
- " input was: %s\n", error, yield);
- }
- if (decoded != NULL) yield = decoded;
- }
+ return g;
-return yield;
+if (sender_host_address)
+ g = string_append(g, 2, US" smtp.remote-ip=", sender_host_address);
+return g;
}
-
/*************************************************
* Return list of recipients *
*************************************************/
static uschar *
fn_recipients(void)
{
-if (!enable_dollar_recipients) return NULL; else
+uschar * s;
+gstring * g = NULL;
+
+if (!f.enable_dollar_recipients) return NULL;
+
+for (int i = 0; i < recipients_count; i++)
{
- int size = 128;
- int ptr = 0;
- int i;
- uschar * s = store_get(size);
- for (i = 0; i < recipients_count; i++)
- {
- if (i != 0) s = string_cat(s, &size, &ptr, US", ", 2);
- s = string_cat(s, &size, &ptr, recipients_list[i].address,
- Ustrlen(recipients_list[i].address));
- }
- s[ptr] = 0; /* string_cat() leaves room */
- return s;
+ s = recipients_list[i].address;
+ g = string_append2_listele_n(g, US", ", s, Ustrlen(s));
+ }
+return g ? g->s : NULL;
+}
+
+
+/*************************************************
+* Return size of queue *
+*************************************************/
+/* Ask the daemon for the queue size */
+
+static uschar *
+fn_queue_size(void)
+{
+struct sockaddr_un sa_un = {.sun_family = AF_UNIX};
+uschar buf[16];
+int fd;
+ssize_t len;
+const uschar * where;
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+uschar * sname;
+#endif
+fd_set fds;
+struct timeval tv;
+
+if ((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0)
+ {
+ DEBUG(D_expand) debug_printf(" socket: %s\n", strerror(errno));
+ return NULL;
+ }
+
+#ifdef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+sa_un.sun_path[0] = 0; /* Abstract local socket addr - Linux-specific? */
+len = offsetof(struct sockaddr_un, sun_path) + 1
+ + snprintf(sa_un.sun_path+1, sizeof(sa_un.sun_path)-1, "exim_%d", getpid());
+#else
+sname = string_sprintf("%s/p_%d", spool_directory, getpid());
+len = offsetof(struct sockaddr_un, sun_path)
+ + snprintf(sa_un.sun_path, sizeof(sa_un.sun_path), "%s", sname);
+#endif
+
+if (bind(fd, (const struct sockaddr *)&sa_un, len) < 0)
+ { where = US"bind"; goto bad; }
+
+#ifdef notdef
+debug_printf("local addr '%s%s'\n",
+ *sa_un.sun_path ? "" : "@",
+ sa_un.sun_path + (*sa_un.sun_path ? 0 : 1));
+#endif
+
+#ifdef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+sa_un.sun_path[0] = 0; /* Abstract local socket addr - Linux-specific? */
+len = offsetof(struct sockaddr_un, sun_path) + 1
+ + snprintf(sa_un.sun_path+1, sizeof(sa_un.sun_path)-1, "%s",
+ expand_string(notifier_socket));
+#else
+len = offsetof(struct sockaddr_un, sun_path)
+ + snprintf(sa_un.sun_path, sizeof(sa_un.sun_path), "%s",
+ expand_string(notifier_socket));
+#endif
+
+if (connect(fd, (const struct sockaddr *)&sa_un, len) < 0)
+ { where = US"connect"; goto bad2; }
+
+buf[0] = NOTIFY_QUEUE_SIZE_REQ;
+if (send(fd, buf, 1, 0) < 0) { where = US"send"; goto bad; }
+
+FD_ZERO(&fds); FD_SET(fd, &fds);
+tv.tv_sec = 2; tv.tv_usec = 0;
+if (select(fd + 1, (SELECT_ARG2_TYPE *)&fds, NULL, NULL, &tv) != 1)
+ {
+ DEBUG(D_expand) debug_printf("no daemon response; using local evaluation\n");
+ len = snprintf(CS buf, sizeof(buf), "%u", queue_count_cached());
}
+else if ((len = recv(fd, buf, sizeof(buf), 0)) < 0)
+ { where = US"recv"; goto bad2; }
+
+close(fd);
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+Uunlink(sname);
+#endif
+return string_copyn(buf, len);
+
+bad2:
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+ Uunlink(sname);
+#endif
+bad:
+ close(fd);
+ DEBUG(D_expand) debug_printf(" %s: %s\n", where, strerror(errno));
+ return NULL;
}
if ((Ustrncmp(name, "acl_c", 5) == 0 || Ustrncmp(name, "acl_m", 5) == 0) &&
!isalpha(name[5]))
{
- tree_node *node =
- tree_search((name[4] == 'c')? acl_var_c : acl_var_m, name + 4);
- return (node == NULL)? (strict_acl_vars? NULL : US"") : node->data.ptr;
+ tree_node * node =
+ tree_search(name[4] == 'c' ? acl_var_c : acl_var_m, name + 4);
+ return node ? node->data.ptr : strict_acl_vars ? NULL : US"";
+ }
+else if (Ustrncmp(name, "r_", 2) == 0)
+ {
+ tree_node * node = tree_search(router_var, name + 2);
+ return node ? node->data.ptr : strict_acl_vars ? NULL : US"";
}
/* Handle $auth<n> variables. */
switch (vp->type)
{
case vtype_filter_int:
- if (!filter_running) return NULL;
- /* Fall through */
- /* VVVVVVVVVVVV */
+ if (!f.filter_running) return NULL;
+ /* Fall through */
+ /* VVVVVVVVVVVV */
case vtype_int:
- sprintf(CS var_buffer, "%d", *(int *)(val)); /* Integer */
- return var_buffer;
+ sprintf(CS var_buffer, "%d", *(int *)(val)); /* Integer */
+ return var_buffer;
case vtype_ino:
- sprintf(CS var_buffer, "%ld", (long int)(*(ino_t *)(val))); /* Inode */
- return var_buffer;
+ sprintf(CS var_buffer, "%ld", (long int)(*(ino_t *)(val))); /* Inode */
+ return var_buffer;
case vtype_gid:
- sprintf(CS var_buffer, "%ld", (long int)(*(gid_t *)(val))); /* gid */
- return var_buffer;
+ sprintf(CS var_buffer, "%ld", (long int)(*(gid_t *)(val))); /* gid */
+ return var_buffer;
case vtype_uid:
- sprintf(CS var_buffer, "%ld", (long int)(*(uid_t *)(val))); /* uid */
- return var_buffer;
+ sprintf(CS var_buffer, "%ld", (long int)(*(uid_t *)(val))); /* uid */
+ return var_buffer;
case vtype_bool:
- sprintf(CS var_buffer, "%s", *(BOOL *)(val) ? "yes" : "no"); /* bool */
- return var_buffer;
+ sprintf(CS var_buffer, "%s", *(BOOL *)(val) ? "yes" : "no"); /* bool */
+ return var_buffer;
case vtype_stringptr: /* Pointer to string */
- s = *((uschar **)(val));
- return (s == NULL)? US"" : s;
+ return (s = *((uschar **)(val))) ? s : US"";
case vtype_pid:
- sprintf(CS var_buffer, "%d", (int)getpid()); /* pid */
- return var_buffer;
+ sprintf(CS var_buffer, "%d", (int)getpid()); /* pid */
+ return var_buffer;
case vtype_load_avg:
- sprintf(CS var_buffer, "%d", OS_GETLOADAVG()); /* load_average */
- return var_buffer;
+ sprintf(CS var_buffer, "%d", OS_GETLOADAVG()); /* load_average */
+ return var_buffer;
case vtype_host_lookup: /* Lookup if not done so */
- if (sender_host_name == NULL && sender_host_address != NULL &&
- !host_lookup_failed && host_name_lookup() == OK)
- host_build_sender_fullhost();
- return (sender_host_name == NULL)? US"" : sender_host_name;
+ if ( !sender_host_name && sender_host_address
+ && !host_lookup_failed && host_name_lookup() == OK)
+ host_build_sender_fullhost();
+ return sender_host_name ? sender_host_name : US"";
case vtype_localpart: /* Get local part from address */
- s = *((uschar **)(val));
- if (s == NULL) return US"";
- domain = Ustrrchr(s, '@');
- if (domain == NULL) return s;
- if (domain - s > sizeof(var_buffer) - 1)
- log_write(0, LOG_MAIN|LOG_PANIC_DIE, "local part longer than " SIZE_T_FMT
- " in string expansion", sizeof(var_buffer));
- Ustrncpy(var_buffer, s, domain - s);
- var_buffer[domain - s] = 0;
- return var_buffer;
+ if (!(s = *((uschar **)(val)))) return US"";
+ if (!(domain = Ustrrchr(s, '@'))) return s;
+ if (domain - s > sizeof(var_buffer) - 1)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "local part longer than " SIZE_T_FMT
+ " in string expansion", sizeof(var_buffer));
+ return string_copyn(s, domain - s);
case vtype_domain: /* Get domain from address */
- s = *((uschar **)(val));
- if (s == NULL) return US"";
- domain = Ustrrchr(s, '@');
- return (domain == NULL)? US"" : domain + 1;
+ if (!(s = *((uschar **)(val)))) return US"";
+ domain = Ustrrchr(s, '@');
+ return domain ? domain + 1 : US"";
case vtype_msgheaders:
- return find_header(NULL, exists_only, newsize, FALSE, NULL);
+ return find_header(NULL, newsize, exists_only ? FH_EXISTS_ONLY : 0, NULL);
case vtype_msgheaders_raw:
- return find_header(NULL, exists_only, newsize, TRUE, NULL);
+ return find_header(NULL, newsize,
+ exists_only ? FH_EXISTS_ONLY|FH_WANT_RAW : FH_WANT_RAW, NULL);
case vtype_msgbody: /* Pointer to msgbody string */
case vtype_msgbody_end: /* Ditto, the end of the msg */
- ss = (uschar **)(val);
- if (*ss == NULL && deliver_datafile >= 0) /* Read body when needed */
- {
- uschar *body;
- off_t start_offset = SPOOL_DATA_START_OFFSET;
- int len = message_body_visible;
- if (len > message_size) len = message_size;
- *ss = body = store_malloc(len+1);
- body[0] = 0;
- if (vp->type == vtype_msgbody_end)
- {
- struct stat statbuf;
- if (fstat(deliver_datafile, &statbuf) == 0)
- {
- start_offset = statbuf.st_size - len;
- if (start_offset < SPOOL_DATA_START_OFFSET)
- start_offset = SPOOL_DATA_START_OFFSET;
- }
- }
- lseek(deliver_datafile, start_offset, SEEK_SET);
- len = read(deliver_datafile, body, len);
- if (len > 0)
+ ss = (uschar **)(val);
+ if (!*ss && deliver_datafile >= 0) /* Read body when needed */
{
- body[len] = 0;
- if (message_body_newlines) /* Separate loops for efficiency */
+ uschar *body;
+ off_t start_offset = SPOOL_DATA_START_OFFSET;
+ int len = message_body_visible;
+ if (len > message_size) len = message_size;
+ *ss = body = store_malloc(len+1);
+ body[0] = 0;
+ if (vp->type == vtype_msgbody_end)
{
- while (len > 0)
- { if (body[--len] == 0) body[len] = ' '; }
+ struct stat statbuf;
+ if (fstat(deliver_datafile, &statbuf) == 0)
+ {
+ start_offset = statbuf.st_size - len;
+ if (start_offset < SPOOL_DATA_START_OFFSET)
+ start_offset = SPOOL_DATA_START_OFFSET;
+ }
}
- else
+ if (lseek(deliver_datafile, start_offset, SEEK_SET) < 0)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "deliver_datafile lseek: %s",
+ strerror(errno));
+ len = read(deliver_datafile, body, len);
+ if (len > 0)
{
- while (len > 0)
- { if (body[--len] == '\n' || body[len] == 0) body[len] = ' '; }
+ body[len] = 0;
+ if (message_body_newlines) /* Separate loops for efficiency */
+ while (len > 0)
+ { if (body[--len] == 0) body[len] = ' '; }
+ else
+ while (len > 0)
+ { if (body[--len] == '\n' || body[len] == 0) body[len] = ' '; }
}
}
- }
- return (*ss == NULL)? US"" : *ss;
+ return *ss ? *ss : US"";
case vtype_todbsdin: /* BSD inbox time of day */
- return tod_stamp(tod_bsdin);
+ return tod_stamp(tod_bsdin);
case vtype_tode: /* Unix epoch time of day */
- return tod_stamp(tod_epoch);
+ return tod_stamp(tod_epoch);
case vtype_todel: /* Unix epoch/usec time of day */
- return tod_stamp(tod_epoch_l);
+ return tod_stamp(tod_epoch_l);
case vtype_todf: /* Full time of day */
- return tod_stamp(tod_full);
+ return tod_stamp(tod_full);
case vtype_todl: /* Log format time of day */
- return tod_stamp(tod_log_bare); /* (without timezone) */
+ return tod_stamp(tod_log_bare); /* (without timezone) */
case vtype_todzone: /* Time zone offset only */
- return tod_stamp(tod_zone);
+ return tod_stamp(tod_zone);
case vtype_todzulu: /* Zulu time */
- return tod_stamp(tod_zulu);
+ return tod_stamp(tod_zulu);
case vtype_todlf: /* Log file datestamp tod */
- return tod_stamp(tod_log_datestamp_daily);
+ return tod_stamp(tod_log_datestamp_daily);
case vtype_reply: /* Get reply address */
- s = find_header(US"reply-to:", exists_only, newsize, TRUE,
- headers_charset);
- if (s != NULL) while (isspace(*s)) s++;
- if (s == NULL || *s == 0)
- {
- *newsize = 0; /* For the *s==0 case */
- s = find_header(US"from:", exists_only, newsize, TRUE, headers_charset);
- }
- if (s != NULL)
- {
- uschar *t;
- while (isspace(*s)) s++;
- for (t = s; *t != 0; t++) if (*t == '\n') *t = ' ';
- while (t > s && isspace(t[-1])) t--;
- *t = 0;
- }
- return (s == NULL)? US"" : s;
+ s = find_header(US"reply-to:", newsize,
+ exists_only ? FH_EXISTS_ONLY|FH_WANT_RAW : FH_WANT_RAW,
+ headers_charset);
+ if (s) Uskip_whitespace(&s);
+ if (!s || !*s)
+ {
+ *newsize = 0; /* For the *s==0 case */
+ s = find_header(US"from:", newsize,
+ exists_only ? FH_EXISTS_ONLY|FH_WANT_RAW : FH_WANT_RAW,
+ headers_charset);
+ }
+ if (s)
+ {
+ uschar *t;
+ Uskip_whitespace(&s);
+ for (t = s; *t; t++) if (*t == '\n') *t = ' ';
+ while (t > s && isspace(t[-1])) t--;
+ *t = 0;
+ }
+ return s ? s : US"";
case vtype_string_func:
{
- uschar * (*fn)() = val;
+ stringptr_fn_t * fn = (stringptr_fn_t *) val;
return fn();
}
case vtype_pspace:
{
int inodes;
- sprintf(CS var_buffer, "%d",
+ sprintf(CS var_buffer, PR_EXIM_ARITH,
receive_statvfs(val == (void *)TRUE, &inodes));
}
return var_buffer;
return var_buffer;
case vtype_cert:
- return *(void **)val ? US"<cert>" : US"";
+ return *(void **)val ? US"<cert>" : US"";
- #ifndef DISABLE_DKIM
+#ifndef DISABLE_DKIM
case vtype_dkim:
- return dkim_exim_expand_query((int)(long)val);
- #endif
+ return dkim_exim_expand_query((int)(long)val);
+#endif
}
+
/*************************************************
* Read and expand substrings *
*************************************************/
read_subs(uschar **sub, int n, int m, const uschar **sptr, BOOL skipping,
BOOL check_end, uschar *name, BOOL *resetok)
{
-int i;
const uschar *s = *sptr;
-while (isspace(*s)) s++;
-for (i = 0; i < n; i++)
+Uskip_whitespace(&s);
+for (int i = 0; i < n; i++)
{
if (*s != '{')
{
- if (i < m) return 1;
+ if (i < m)
+ {
+ expand_string_message = string_sprintf("Not enough arguments for '%s' "
+ "(min is %d)", name, m);
+ return 1;
+ }
sub[i] = NULL;
break;
}
- sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, resetok);
- if (sub[i] == NULL) return 3;
+ if (!(sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, resetok)))
+ return 3;
if (*s++ != '}') return 1;
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
}
if (check_end && *s++ != '}')
{
if (s[-1] == '{')
{
- expand_string_message = string_sprintf("Too many arguments for \"%s\" "
+ expand_string_message = string_sprintf("Too many arguments for '%s' "
"(max is %d)", name, n);
return 2;
}
+ expand_string_message = string_sprintf("missing '}' after '%s'", name);
return 1;
}
Sub array will be corrupted on return.
Returns: OK access is granted by an ACCEPT verb
- DISCARD access is granted by a DISCARD verb
+ DISCARD access is (apparently) granted by a DISCARD verb
FAIL access is denied
FAIL_DROP access is denied; drop the connection
DEFER can't tell at the moment
}
DEBUG(D_expand)
- debug_printf("expanding: acl: %s arg: %s%s\n",
+ debug_printf_indent("expanding: acl: %s arg: %s%s\n",
sub[0],
acl_narg>0 ? acl_arg[0] : US"<none>",
acl_narg>1 ? " +more" : "");
-/*************************************************
-* Read and evaluate a condition *
-*************************************************/
+/* Return pointer to dewrapped string, with enclosing specified chars removed.
+The given string is modified on return. Leading whitespace is skipped while
+looking for the opening wrap character, then the rest is scanned for the trailing
+(non-escaped) wrap character. A backslash in the string will act as an escape.
-/*
-Arguments:
- s points to the start of the condition text
- resetok points to a BOOL which is written false if it is unsafe to
- free memory. Certain condition types (acl) may have side-effect
- allocation which must be preserved.
- yield points to a BOOL to hold the result of the condition test;
- if NULL, we are just reading through a condition that is
- part of an "or" combination to check syntax, or in a state
- where the answer isn't required
+A nul is written over the trailing wrap, and a pointer to the char after the
+leading wrap is returned.
-Returns: a pointer to the first character after the condition, or
- NULL after an error
+Arguments:
+ s String for de-wrapping
+ wrap Two-char string, the first being the opener, second the closer wrapping
+ character
+Return:
+ Pointer to de-wrapped string, or NULL on error (with expand_string_message set).
*/
-static const uschar *
-eval_condition(const uschar *s, BOOL *resetok, BOOL *yield)
+static uschar *
+dewrap(uschar * s, const uschar * wrap)
{
-BOOL testfor = TRUE;
-BOOL tempcond, combined_cond;
-BOOL *subcondptr;
-BOOL sub2_honour_dollar = TRUE;
-int i, rc, cond_type, roffset;
-int_eximarith_t num[2];
-struct stat statbuf;
-uschar name[256];
-const uschar *sub[10];
-
-const pcre *re;
-const uschar *rerror;
+uschar * p = s;
+unsigned depth = 0;
+BOOL quotesmode = wrap[0] == wrap[1];
-for (;;)
+if (Uskip_whitespace(&p) == *wrap)
{
- while (isspace(*s)) s++;
- if (*s == '!') { testfor = !testfor; s++; } else break;
+ s = ++p;
+ wrap++;
+ while (*p)
+ {
+ if (*p == '\\') p++;
+ else if (!quotesmode && *p == wrap[-1]) depth++;
+ else if (*p == *wrap)
+ if (depth == 0)
+ {
+ *p = '\0';
+ return s;
+ }
+ else
+ depth--;
+ p++;
+ }
}
+expand_string_message = string_sprintf("missing '%c'", *wrap);
+return NULL;
+}
+
+
+/* Pull off the leading array or object element, returning
+a copy in an allocated string. Update the list pointer.
+
+The element may itself be an abject or array.
+Return NULL when the list is empty.
+*/
+
+static uschar *
+json_nextinlist(const uschar ** list)
+{
+unsigned array_depth = 0, object_depth = 0;
+const uschar * s = *list, * item;
+
+skip_whitespace(&s);
+
+for (item = s;
+ *s && (*s != ',' || array_depth != 0 || object_depth != 0);
+ s++)
+ switch (*s)
+ {
+ case '[': array_depth++; break;
+ case ']': array_depth--; break;
+ case '{': object_depth++; break;
+ case '}': object_depth--; break;
+ }
+*list = *s ? s+1 : s;
+if (item == s) return NULL;
+item = string_copyn(item, s - item);
+DEBUG(D_expand) debug_printf_indent(" json ele: '%s'\n", item);
+return US item;
+}
+
+
+
+/************************************************/
+/* Return offset in ops table, or -1 if not found.
+Repoint to just after the operator in the string.
+
+Argument:
+ ss string representation of operator
+ opname split-out operator name
+*/
+
+static int
+identify_operator(const uschar ** ss, uschar ** opname)
+{
+const uschar * s = *ss;
+uschar name[256];
/* Numeric comparisons are symbolic */
/* All other conditions are named */
-else s = read_name(name, 256, s, US"_");
+else
+ s = read_name(name, sizeof(name), s, US"_");
+*ss = s;
/* If we haven't read a name, it means some non-alpha character is first. */
-if (name[0] == 0)
+if (!name[0])
{
expand_string_message = string_sprintf("condition name expected, "
"but found \"%.16s\"", s);
- return NULL;
+ return -1;
}
+if (opname)
+ *opname = string_copy(name);
-/* Find which condition we are dealing with, and switch on it */
-
-cond_type = chop_match(name, cond_table, nelem(cond_table));
-switch(cond_type)
- {
- /* def: tests for a non-empty variable, or for the existence of a header. If
- yield == NULL we are in a skipping state, and don't care about the answer. */
-
- case ECOND_DEF:
- if (*s != ':')
- {
- expand_string_message = US"\":\" expected after \"def\"";
- return NULL;
- }
+return chop_match(name, cond_table, nelem(cond_table));
+}
- s = read_name(name, 256, s+1, US"_");
- /* Test for a header's existence. If the name contains a closing brace
- character, this may be a user error where the terminating colon has been
- omitted. Set a flag to adjust a subsequent error message in this case. */
+/*************************************************
+* Handle MD5 or SHA-1 computation for HMAC *
+*************************************************/
- if (Ustrncmp(name, "h_", 2) == 0 ||
- Ustrncmp(name, "rh_", 3) == 0 ||
- Ustrncmp(name, "bh_", 3) == 0 ||
- Ustrncmp(name, "header_", 7) == 0 ||
- Ustrncmp(name, "rheader_", 8) == 0 ||
- Ustrncmp(name, "bheader_", 8) == 0)
- {
- s = read_header_name(name, 256, s);
- /* {-for-text-editors */
- if (Ustrchr(name, '}') != NULL) malformed_header = TRUE;
- if (yield != NULL) *yield =
- (find_header(name, TRUE, NULL, FALSE, NULL) != NULL) == testfor;
- }
+/* These are some wrapping functions that enable the HMAC code to be a bit
+cleaner. A good compiler will spot the tail recursion.
- /* Test for a variable's having a non-empty value. A non-existent variable
- causes an expansion failure. */
+Arguments:
+ type HMAC_MD5 or HMAC_SHA1
+ remaining are as for the cryptographic hash functions
- else
- {
- uschar *value = find_variable(name, TRUE, yield == NULL, NULL);
- if (value == NULL)
- {
- expand_string_message = (name[0] == 0)?
- string_sprintf("variable name omitted after \"def:\"") :
- string_sprintf("unknown variable \"%s\" after \"def:\"", name);
- check_variable_error_message(name);
- return NULL;
- }
- if (yield != NULL) *yield = (value[0] != 0) == testfor;
- }
+Returns: nothing
+*/
- return s;
+static void
+chash_start(int type, void * base)
+{
+if (type == HMAC_MD5)
+ md5_start((md5 *)base);
+else
+ sha1_start((hctx *)base);
+}
+
+static void
+chash_mid(int type, void * base, const uschar * string)
+{
+if (type == HMAC_MD5)
+ md5_mid((md5 *)base, string);
+else
+ sha1_mid((hctx *)base, string);
+}
+
+static void
+chash_end(int type, void * base, const uschar * string, int length,
+ uschar * digest)
+{
+if (type == HMAC_MD5)
+ md5_end((md5 *)base, string, length, digest);
+else
+ sha1_end((hctx *)base, string, length, digest);
+}
+
+
+
+
+/* Do an hmac_md5. The result is _not_ nul-terminated, and is sized as
+the smaller of a full hmac_md5 result (16 bytes) or the supplied output buffer.
+
+Arguments:
+ key encoding key, nul-terminated
+ src data to be hashed, nul-terminated
+ buf output buffer
+ len size of output buffer
+*/
+
+static void
+hmac_md5(const uschar * key, const uschar * src, uschar * buf, unsigned len)
+{
+md5 md5_base;
+const uschar * keyptr;
+uschar * p;
+unsigned int keylen;
+
+#define MD5_HASHLEN 16
+#define MD5_HASHBLOCKLEN 64
+
+uschar keyhash[MD5_HASHLEN];
+uschar innerhash[MD5_HASHLEN];
+uschar finalhash[MD5_HASHLEN];
+uschar innerkey[MD5_HASHBLOCKLEN];
+uschar outerkey[MD5_HASHBLOCKLEN];
+
+keyptr = key;
+keylen = Ustrlen(keyptr);
+
+/* If the key is longer than the hash block length, then hash the key
+first */
+
+if (keylen > MD5_HASHBLOCKLEN)
+ {
+ chash_start(HMAC_MD5, &md5_base);
+ chash_end(HMAC_MD5, &md5_base, keyptr, keylen, keyhash);
+ keyptr = keyhash;
+ keylen = MD5_HASHLEN;
+ }
+
+/* Now make the inner and outer key values */
+
+memset(innerkey, 0x36, MD5_HASHBLOCKLEN);
+memset(outerkey, 0x5c, MD5_HASHBLOCKLEN);
+
+for (int i = 0; i < keylen; i++)
+ {
+ innerkey[i] ^= keyptr[i];
+ outerkey[i] ^= keyptr[i];
+ }
+
+/* Now do the hashes */
+
+chash_start(HMAC_MD5, &md5_base);
+chash_mid(HMAC_MD5, &md5_base, innerkey);
+chash_end(HMAC_MD5, &md5_base, src, Ustrlen(src), innerhash);
+
+chash_start(HMAC_MD5, &md5_base);
+chash_mid(HMAC_MD5, &md5_base, outerkey);
+chash_end(HMAC_MD5, &md5_base, innerhash, MD5_HASHLEN, finalhash);
+
+/* Encode the final hash as a hex string, limited by output buffer size */
+
+p = buf;
+for (int i = 0, j = len; i < MD5_HASHLEN; i++)
+ {
+ if (j-- <= 0) break;
+ *p++ = hex_digits[(finalhash[i] & 0xf0) >> 4];
+ if (j-- <= 0) break;
+ *p++ = hex_digits[finalhash[i] & 0x0f];
+ }
+return;
+}
+
+
+/*************************************************
+* Read and evaluate a condition *
+*************************************************/
+
+/*
+Arguments:
+ s points to the start of the condition text
+ resetok points to a BOOL which is written false if it is unsafe to
+ free memory. Certain condition types (acl) may have side-effect
+ allocation which must be preserved.
+ yield points to a BOOL to hold the result of the condition test;
+ if NULL, we are just reading through a condition that is
+ part of an "or" combination to check syntax, or in a state
+ where the answer isn't required
+
+Returns: a pointer to the first character after the condition, or
+ NULL after an error
+*/
+
+static const uschar *
+eval_condition(const uschar *s, BOOL *resetok, BOOL *yield)
+{
+BOOL testfor = TRUE;
+BOOL tempcond, combined_cond;
+BOOL *subcondptr;
+BOOL sub2_honour_dollar = TRUE;
+BOOL is_forany, is_json, is_jsons;
+int rc, cond_type, roffset;
+int_eximarith_t num[2];
+struct stat statbuf;
+uschar * opname;
+uschar name[256];
+const uschar *sub[10];
+
+const pcre *re;
+const uschar *rerror;
+
+for (;;)
+ if (Uskip_whitespace(&s) == '!') { testfor = !testfor; s++; } else break;
+
+switch(cond_type = identify_operator(&s, &opname))
+ {
+ /* def: tests for a non-empty variable, or for the existence of a header. If
+ yield == NULL we are in a skipping state, and don't care about the answer. */
+
+ case ECOND_DEF:
+ {
+ uschar * t;
+
+ if (*s != ':')
+ {
+ expand_string_message = US"\":\" expected after \"def\"";
+ return NULL;
+ }
+
+ s = read_name(name, sizeof(name), s+1, US"_");
+
+ /* Test for a header's existence. If the name contains a closing brace
+ character, this may be a user error where the terminating colon has been
+ omitted. Set a flag to adjust a subsequent error message in this case. */
+
+ if ( ( *(t = name) == 'h'
+ || (*t == 'r' || *t == 'l' || *t == 'b') && *++t == 'h'
+ )
+ && (*++t == '_' || Ustrncmp(t, "eader_", 6) == 0)
+ )
+ {
+ s = read_header_name(name, sizeof(name), s);
+ /* {-for-text-editors */
+ if (Ustrchr(name, '}') != NULL) malformed_header = TRUE;
+ if (yield) *yield =
+ (find_header(name, NULL, FH_EXISTS_ONLY, NULL) != NULL) == testfor;
+ }
+
+ /* Test for a variable's having a non-empty value. A non-existent variable
+ causes an expansion failure. */
+
+ else
+ {
+ if (!(t = find_variable(name, TRUE, yield == NULL, NULL)))
+ {
+ expand_string_message = name[0]
+ ? string_sprintf("unknown variable \"%s\" after \"def:\"", name)
+ : US"variable name omitted after \"def:\"";
+ check_variable_error_message(name);
+ return NULL;
+ }
+ if (yield) *yield = (t[0] != 0) == testfor;
+ }
+
+ return s;
+ }
/* first_delivery tests for first delivery attempt */
case ECOND_FIRST_DELIVERY:
- if (yield != NULL) *yield = deliver_firsttime == testfor;
+ if (yield) *yield = f.deliver_firsttime == testfor;
return s;
/* queue_running tests for any process started by a queue runner */
case ECOND_QUEUE_RUNNING:
- if (yield != NULL) *yield = (queue_run_pid != (pid_t)0) == testfor;
+ if (yield) *yield = (queue_run_pid != (pid_t)0) == testfor;
return s;
case ECOND_LDAPAUTH:
case ECOND_PWCHECK:
- while (isspace(*s)) s++;
- if (*s != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
+ if (Uskip_whitespace(&s) != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
sub[0] = expand_string_internal(s+1, TRUE, &s, yield == NULL, TRUE, resetok);
- if (sub[0] == NULL) return NULL;
+ if (!sub[0]) return NULL;
/* {-for-text-editors */
if (*s++ != '}') goto COND_FAILED_CURLY_END;
- if (yield == NULL) return s; /* No need to run the test if skipping */
+ if (!yield) return s; /* No need to run the test if skipping */
switch(cond_type)
{
uschar *sub[10];
uschar *user_msg;
BOOL cond = FALSE;
- int size = 0;
- int ptr = 0;
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
if (*s++ != '{') goto COND_FAILED_CURLY_START; /*}*/
switch(read_subs(sub, nelem(sub), 1,
- &s, yield == NULL, TRUE, US"acl", resetok))
+ &s, yield == NULL, TRUE, name, resetok))
{
case 1: expand_string_message = US"too few arguments or bracketing "
"error for acl";
case 3: return NULL;
}
- *resetok = FALSE;
- if (yield != NULL) switch(eval_acl(sub, nelem(sub), &user_msg))
+ if (yield)
+ {
+ int rc;
+ *resetok = FALSE; /* eval_acl() might allocate; do not reclaim */
+ switch(rc = eval_acl(sub, nelem(sub), &user_msg))
{
case OK:
cond = TRUE;
case FAIL:
lookup_value = NULL;
if (user_msg)
- {
- lookup_value = string_cat(NULL, &size, &ptr, user_msg, Ustrlen(user_msg));
- lookup_value[ptr] = '\0';
- }
+ lookup_value = string_copy(user_msg);
*yield = cond == testfor;
break;
case DEFER:
- expand_string_forcedfail = TRUE;
+ f.expand_string_forcedfail = TRUE;
+ /*FALLTHROUGH*/
default:
- expand_string_message = string_sprintf("error from acl \"%s\"", sub[0]);
+ expand_string_message = string_sprintf("%s from acl \"%s\"",
+ rc_names[rc], sub[0]);
return NULL;
}
+ }
return s;
}
#else
{
uschar *sub[4];
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
- switch(read_subs(sub, nelem(sub), 2, &s, yield == NULL, TRUE, US"saslauthd",
+ switch(read_subs(sub, nelem(sub), 2, &s, yield == NULL, TRUE, name,
resetok))
{
case 1: expand_string_message = US"too few arguments or bracketing "
case 2:
case 3: return NULL;
}
- if (sub[2] == NULL) sub[3] = NULL; /* realm if no service */
- if (yield != NULL)
+ if (!sub[2]) sub[3] = NULL; /* realm if no service */
+ if (yield)
{
int rc = auth_call_saslauthd(sub[0], sub[1], sub[2], sub[3],
&expand_string_message);
case ECOND_STR_GE:
case ECOND_STR_GEI:
- for (i = 0; i < 2; i++)
+ for (int i = 0; i < 2; i++)
{
/* Sometimes, we don't expand substrings; too many insecure configurations
created using match_address{}{} and friends, where the second param
if ((i > 0) && !sub2_honour_dollar)
honour_dollar = FALSE;
- while (isspace(*s)) s++;
- if (*s != '{')
+ if (Uskip_whitespace(&s) != '{')
{
if (i == 0) goto COND_FAILED_CURLY_START;
expand_string_message = string_sprintf("missing 2nd string in {} "
- "after \"%s\"", name);
+ "after \"%s\"", opname);
return NULL;
}
- sub[i] = expand_string_internal(s+1, TRUE, &s, yield == NULL,
- honour_dollar, resetok);
- if (sub[i] == NULL) return NULL;
+ if (!(sub[i] = expand_string_internal(s+1, TRUE, &s, yield == NULL,
+ honour_dollar, resetok)))
+ return NULL;
+ DEBUG(D_expand) if (i == 1 && !sub2_honour_dollar && Ustrchr(sub[1], '$'))
+ debug_printf_indent("WARNING: the second arg is NOT expanded,"
+ " for security reasons\n");
if (*s++ != '}') goto COND_FAILED_CURLY_END;
/* Convert to numerical if required; we know that the names of all the
conditions that compare numbers do not start with a letter. This just saves
checking for them individually. */
- if (!isalpha(name[0]) && yield != NULL)
- {
+ if (!isalpha(opname[0]) && yield)
if (sub[i][0] == 0)
{
num[i] = 0;
DEBUG(D_expand)
- debug_printf("empty string cast to zero for numerical comparison\n");
+ debug_printf_indent("empty string cast to zero for numerical comparison\n");
}
else
{
num[i] = expanded_string_integer(sub[i], FALSE);
- if (expand_string_message != NULL) return NULL;
+ if (expand_string_message) return NULL;
}
- }
}
/* Result not required */
- if (yield == NULL) return s;
+ if (!yield) return s;
/* Do an appropriate comparison */
break;
case ECOND_MATCH: /* Regular expression match */
- re = pcre_compile(CS sub[1], PCRE_COPT, (const char **)&rerror, &roffset,
- NULL);
- if (re == NULL)
+ if (!(re = pcre_compile(CS sub[1], PCRE_COPT, CCSS &rerror,
+ &roffset, NULL)))
{
expand_string_message = string_sprintf("regular expression error in "
"\"%s\": %s at offset %d", sub[1], rerror, roffset);
uschar digest[16];
md5_start(&base);
- md5_end(&base, (uschar *)sub[0], Ustrlen(sub[0]), digest);
+ md5_end(&base, sub[0], Ustrlen(sub[0]), digest);
/* If the length that we are comparing against is 24, the MD5 digest
is expressed as a base64 string. This is the way LDAP does it. However,
if (sublen == 24)
{
- uschar *coded = b64encode((uschar *)digest, 16);
+ uschar *coded = b64encode(CUS digest, 16);
DEBUG(D_auth) debug_printf("crypteq: using MD5+B64 hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+5);
tempcond = (Ustrcmp(coded, sub[1]+5) == 0);
}
else if (sublen == 32)
{
- int i;
uschar coded[36];
- for (i = 0; i < 16; i++) sprintf(CS (coded+2*i), "%02X", digest[i]);
+ for (int i = 0; i < 16; i++) sprintf(CS (coded+2*i), "%02X", digest[i]);
coded[32] = 0;
DEBUG(D_auth) debug_printf("crypteq: using MD5+hex hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+5);
else if (strncmpic(sub[1], US"{sha1}", 6) == 0)
{
int sublen = Ustrlen(sub[1]+6);
- sha1 base;
+ hctx h;
uschar digest[20];
- sha1_start(&base);
- sha1_end(&base, (uschar *)sub[0], Ustrlen(sub[0]), digest);
+ sha1_start(&h);
+ sha1_end(&h, sub[0], Ustrlen(sub[0]), digest);
/* If the length that we are comparing against is 28, assume the SHA1
digest is expressed as a base64 string. If the length is 40, assume a
if (sublen == 28)
{
- uschar *coded = b64encode((uschar *)digest, 20);
+ uschar *coded = b64encode(CUS digest, 20);
DEBUG(D_auth) debug_printf("crypteq: using SHA1+B64 hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+6);
tempcond = (Ustrcmp(coded, sub[1]+6) == 0);
}
else if (sublen == 40)
{
- int i;
uschar coded[44];
- for (i = 0; i < 20; i++) sprintf(CS (coded+2*i), "%02X", digest[i]);
+ for (int i = 0; i < 20; i++) sprintf(CS (coded+2*i), "%02X", digest[i]);
coded[40] = 0;
DEBUG(D_auth) debug_printf("crypteq: using SHA1+hex hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+6);
#define XSTR(s) STR(s)
DEBUG(D_auth) debug_printf("crypteq: using %s()\n"
" subject=%s\n crypted=%s\n",
- (which == 0)? XSTR(DEFAULT_CRYPT) : (which == 1)? "crypt" : "crypt16",
+ which == 0 ? XSTR(DEFAULT_CRYPT) : which == 1 ? "crypt" : "crypt16",
coded, sub[1]);
#undef STR
#undef XSTR
salt), force failure. Otherwise we get false positives: with an empty
string the yield of crypt() is an empty string! */
- tempcond = (Ustrlen(sub[1]) < 2)? FALSE :
- (Ustrcmp(coded, sub[1]) == 0);
+ if (coded)
+ tempcond = Ustrlen(sub[1]) < 2 ? FALSE : Ustrcmp(coded, sub[1]) == 0;
+ else if (errno == EINVAL)
+ tempcond = FALSE;
+ else
+ {
+ expand_string_message = string_sprintf("crypt error: %s\n",
+ US strerror(errno));
+ return NULL;
+ }
}
break;
#endif /* SUPPORT_CRYPTEQ */
uschar *save_iterate_item = iterate_item;
int (*compare)(const uschar *, const uschar *);
- DEBUG(D_expand) debug_printf("condition: %s\n", name);
+ DEBUG(D_expand) debug_printf_indent("condition: %s item: %s\n", opname, sub[0]);
tempcond = FALSE;
compare = cond_type == ECOND_INLISTI
? strcmpic : (int (*)(const uschar *, const uschar *)) strcmp;
while ((iterate_item = string_nextinlist(&list, &sep, NULL, 0)))
+ {
+ DEBUG(D_expand) debug_printf_indent(" compare %s\n", iterate_item);
if (compare(sub[0], iterate_item) == 0)
{
tempcond = TRUE;
break;
}
+ }
iterate_item = save_iterate_item;
}
case ECOND_AND:
case ECOND_OR:
- subcondptr = (yield == NULL)? NULL : &tempcond;
+ subcondptr = (yield == NULL) ? NULL : &tempcond;
combined_cond = (cond_type == ECOND_AND);
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
for (;;)
{
- while (isspace(*s)) s++;
/* {-for-text-editors */
- if (*s == '}') break;
+ if (Uskip_whitespace(&s) == '}') break;
if (*s != '{') /* }-for-text-editors */
{
expand_string_message = string_sprintf("each subcondition "
- "inside an \"%s{...}\" condition must be in its own {}", name);
+ "inside an \"%s{...}\" condition must be in its own {}", opname);
return NULL;
}
if (!(s = eval_condition(s+1, resetok, subcondptr)))
{
expand_string_message = string_sprintf("%s inside \"%s{...}\" condition",
- expand_string_message, name);
+ expand_string_message, opname);
return NULL;
}
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
/* {-for-text-editors */
if (*s++ != '}')
{
/* {-for-text-editors */
expand_string_message = string_sprintf("missing } at end of condition "
- "inside \"%s\" group", name);
+ "inside \"%s\" group", opname);
return NULL;
}
- if (yield != NULL)
- {
+ if (yield)
if (cond_type == ECOND_AND)
{
combined_cond &= tempcond;
combined_cond |= tempcond;
if (combined_cond) subcondptr = NULL; /* once true, don't */
} /* evaluate any more */
- }
}
- if (yield != NULL) *yield = (combined_cond == testfor);
+ if (yield) *yield = (combined_cond == testfor);
return ++s;
/* forall/forany: iterates a condition with different values */
- case ECOND_FORALL:
- case ECOND_FORANY:
+ case ECOND_FORALL: is_forany = FALSE; is_json = FALSE; is_jsons = FALSE; goto FORMANY;
+ case ECOND_FORANY: is_forany = TRUE; is_json = FALSE; is_jsons = FALSE; goto FORMANY;
+ case ECOND_FORALL_JSON: is_forany = FALSE; is_json = TRUE; is_jsons = FALSE; goto FORMANY;
+ case ECOND_FORANY_JSON: is_forany = TRUE; is_json = TRUE; is_jsons = FALSE; goto FORMANY;
+ case ECOND_FORALL_JSONS: is_forany = FALSE; is_json = TRUE; is_jsons = TRUE; goto FORMANY;
+ case ECOND_FORANY_JSONS: is_forany = TRUE; is_json = TRUE; is_jsons = TRUE; goto FORMANY;
+
+ FORMANY:
{
const uschar * list;
int sep = 0;
uschar *save_iterate_item = iterate_item;
- DEBUG(D_expand) debug_printf("condition: %s\n", name);
+ DEBUG(D_expand) debug_printf_indent("condition: %s\n", opname);
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
- sub[0] = expand_string_internal(s, TRUE, &s, (yield == NULL), TRUE, resetok);
- if (sub[0] == NULL) return NULL;
+ if (!(sub[0] = expand_string_internal(s, TRUE, &s, yield == NULL, TRUE, resetok)))
+ return NULL;
/* {-for-text-editors */
if (*s++ != '}') goto COND_FAILED_CURLY_END;
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
sub[1] = s;
if (!(s = eval_condition(sub[1], resetok, NULL)))
{
expand_string_message = string_sprintf("%s inside \"%s\" condition",
- expand_string_message, name);
+ expand_string_message, opname);
return NULL;
}
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
/* {-for-text-editors */
if (*s++ != '}')
{
/* {-for-text-editors */
expand_string_message = string_sprintf("missing } at end of condition "
- "inside \"%s\"", name);
+ "inside \"%s\"", opname);
return NULL;
}
- if (yield != NULL) *yield = !testfor;
+ if (yield) *yield = !testfor;
list = sub[0];
- while ((iterate_item = string_nextinlist(&list, &sep, NULL, 0)) != NULL)
+ if (is_json) list = dewrap(string_copy(list), US"[]");
+ while ((iterate_item = is_json
+ ? json_nextinlist(&list) : string_nextinlist(&list, &sep, NULL, 0)))
{
- DEBUG(D_expand) debug_printf("%s: $item = \"%s\"\n", name, iterate_item);
+ if (is_jsons)
+ if (!(iterate_item = dewrap(iterate_item, US"\"\"")))
+ {
+ expand_string_message =
+ string_sprintf("%s wrapping string result for extract jsons",
+ expand_string_message);
+ iterate_item = save_iterate_item;
+ return NULL;
+ }
+
+ DEBUG(D_expand) debug_printf_indent("%s: $item = \"%s\"\n", opname, iterate_item);
if (!eval_condition(sub[1], resetok, &tempcond))
{
expand_string_message = string_sprintf("%s inside \"%s\" condition",
- expand_string_message, name);
+ expand_string_message, opname);
iterate_item = save_iterate_item;
return NULL;
}
- DEBUG(D_expand) debug_printf("%s: condition evaluated to %s\n", name,
+ DEBUG(D_expand) debug_printf_indent("%s: condition evaluated to %s\n", opname,
tempcond? "true":"false");
- if (yield != NULL) *yield = (tempcond == testfor);
- if (tempcond == (cond_type == ECOND_FORANY)) break;
+ if (yield) *yield = (tempcond == testfor);
+ if (tempcond == is_forany) break;
}
iterate_item = save_iterate_item;
uschar *ourname;
size_t len;
BOOL boolvalue = FALSE;
- while (isspace(*s)) s++;
- if (*s != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
+
+ if (Uskip_whitespace(&s) != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
ourname = cond_type == ECOND_BOOL_LAX ? US"bool_lax" : US"bool";
switch(read_subs(sub_arg, 1, 1, &s, yield == NULL, FALSE, ourname, resetok))
{
case 3: return NULL;
}
t = sub_arg[0];
- while (isspace(*t)) t++;
- len = Ustrlen(t);
- if (len)
+ Uskip_whitespace(&t);
+ if ((len = Ustrlen(t)))
{
/* trailing whitespace: seems like a good idea to ignore it too */
t2 = t + len - 1;
}
}
DEBUG(D_expand)
- debug_printf("considering %s: %s\n", ourname, len ? t : US"<empty>");
+ debug_printf_indent("considering %s: %s\n", ourname, len ? t : US"<empty>");
/* logic for the lax case from expand_check_condition(), which also does
expands, and the logic is both short and stable enough that there should
be no maintenance burden from replicating it. */
"value \"%s\"", t);
return NULL;
}
- if (yield != NULL) *yield = (boolvalue == testfor);
+ DEBUG(D_expand) debug_printf_indent("%s: condition evaluated to %s\n", ourname,
+ boolvalue? "true":"false");
+ if (yield) *yield = (boolvalue == testfor);
return s;
}
+#ifdef EXPERIMENTAL_SRS_NATIVE
+ case ECOND_INBOUND_SRS:
+ /* ${if inbound_srs {local_part}{secret} {yes}{no}} */
+ {
+ uschar * sub[2];
+ const pcre * re;
+ int ovec[3*(4+1)];
+ int n;
+ uschar cksum[4];
+ BOOL boolvalue = FALSE;
+
+ switch(read_subs(sub, 2, 2, CUSS &s, yield == NULL, FALSE, name, resetok))
+ {
+ case 1: expand_string_message = US"too few arguments or bracketing "
+ "error for inbound_srs";
+ case 2:
+ case 3: return NULL;
+ }
+
+ /* Match the given local_part against the SRS-encoded pattern */
+
+ re = regex_must_compile(US"^(?i)SRS0=([^=]+)=([A-Z2-7]+)=([^=]*)=(.*)$",
+ TRUE, FALSE);
+ if (pcre_exec(re, NULL, CS sub[0], Ustrlen(sub[0]), 0, PCRE_EOPT,
+ ovec, nelem(ovec)) < 0)
+ {
+ DEBUG(D_expand) debug_printf("no match for SRS'd local-part pattern\n");
+ goto srs_result;
+ }
+
+ /* Side-effect: record the decoded recipient */
+
+ srs_recipient = string_sprintf("%.*S@%.*S", /* lowercased */
+ ovec[9]-ovec[8], sub[0] + ovec[8], /* substring 4 */
+ ovec[7]-ovec[6], sub[0] + ovec[6]); /* substring 3 */
+
+ /* If a zero-length secret was given, we're done. Otherwise carry on
+ and validate the given SRS local_part againt our secret. */
+
+ if (!*sub[1])
+ {
+ boolvalue = TRUE;
+ goto srs_result;
+ }
+
+ /* check the timestamp */
+ {
+ struct timeval now;
+ uschar * ss = sub[0] + ovec[4]; /* substring 2, the timestamp */
+ long d;
+
+ gettimeofday(&now, NULL);
+ now.tv_sec /= 86400; /* days since epoch */
+
+ /* Decode substring 2 from base32 to a number */
+
+ for (d = 0, n = ovec[5]-ovec[4]; n; n--)
+ {
+ uschar * t = Ustrchr(base32_chars, *ss++);
+ d = d * 32 + (t - base32_chars);
+ }
+
+ if (((now.tv_sec - d) & 0x3ff) > 10) /* days since SRS generated */
+ {
+ DEBUG(D_expand) debug_printf("SRS too old\n");
+ goto srs_result;
+ }
+ }
+
+ /* check length of substring 1, the offered checksum */
+
+ if (ovec[3]-ovec[2] != 4)
+ {
+ DEBUG(D_expand) debug_printf("SRS checksum wrong size\n");
+ goto srs_result;
+ }
+
+ /* Hash the address with our secret, and compare that computed checksum
+ with the one extracted from the arg */
+
+ hmac_md5(sub[1], srs_recipient, cksum, sizeof(cksum));
+ if (Ustrncmp(cksum, sub[0] + ovec[2], 4) != 0)
+ {
+ DEBUG(D_expand) debug_printf("SRS checksum mismatch\n");
+ goto srs_result;
+ }
+ boolvalue = TRUE;
+
+srs_result:
+ if (yield) *yield = (boolvalue == testfor);
+ return s;
+ }
+#endif /*EXPERIMENTAL_SRS_NATIVE*/
+
/* Unknown condition */
default:
- expand_string_message = string_sprintf("unknown condition \"%s\"", name);
- return NULL;
+ if (!expand_string_message || !*expand_string_message)
+ expand_string_message = string_sprintf("unknown condition \"%s\"", opname);
+ return NULL;
} /* End switch on condition type */
/* Missing braces at start and end of data */
COND_FAILED_CURLY_START:
-expand_string_message = string_sprintf("missing { after \"%s\"", name);
+expand_string_message = string_sprintf("missing { after \"%s\"", opname);
return NULL;
COND_FAILED_CURLY_END:
expand_string_message = string_sprintf("missing } at end of \"%s\" condition",
- name);
+ opname);
return NULL;
/* A condition requires code that is not compiled */
!defined(SUPPORT_CRYPTEQ) || !defined(CYRUS_SASLAUTHD_SOCKET)
COND_FAILED_NOT_COMPILED:
expand_string_message = string_sprintf("support for \"%s\" not compiled",
- name);
+ opname);
return NULL;
#endif
}
static int
save_expand_strings(uschar **save_expand_nstring, int *save_expand_nlength)
{
-int i;
-for (i = 0; i <= expand_nmax; i++)
+for (int i = 0; i <= expand_nmax; i++)
{
save_expand_nstring[i] = expand_nstring[i];
save_expand_nlength[i] = expand_nlength[i];
restore_expand_strings(int save_expand_nmax, uschar **save_expand_nstring,
int *save_expand_nlength)
{
-int i;
expand_nmax = save_expand_nmax;
-for (i = 0; i <= expand_nmax; i++)
+for (int i = 0; i <= expand_nmax; i++)
{
expand_nstring[i] = save_expand_nstring[i];
expand_nlength[i] = save_expand_nlength[i];
yes TRUE if the first string is to be used, else use the second
save_lookup a value to put back into lookup_value before the 2nd expansion
sptr points to the input string pointer
- yieldptr points to the output string pointer
- sizeptr points to the output string size
- ptrptr points to the output string pointer
- type "lookup" or "if" or "extract" or "run", for error message
+ yieldptr points to the output growable-string pointer
+ type "lookup", "if", "extract", "run", "env", "listextract" or
+ "certextract" for error message
resetok if not NULL, pointer to flag - write FALSE if unsafe to reset
the store.
static int
process_yesno(BOOL skipping, BOOL yes, uschar *save_lookup, const uschar **sptr,
- uschar **yieldptr, int *sizeptr, int *ptrptr, uschar *type, BOOL *resetok)
+ gstring ** yieldptr, uschar *type, BOOL *resetok)
{
int rc = 0;
const uschar *s = *sptr; /* Local value */
uschar *sub1, *sub2;
+const uschar * errwhere;
/* If there are no following strings, we substitute the contents of $value for
lookups and for extractions in the success case. For the ${if item, the string
"true" is substituted. In the fail case, nothing is substituted for all three
items. */
-while (isspace(*s)) s++;
-if (*s == '}')
+if (skip_whitespace(&s) == '}')
{
if (type[0] == 'i')
{
- if (yes) *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, US"true", 4);
+ if (yes && !skipping)
+ *yieldptr = string_catn(*yieldptr, US"true", 4);
}
else
{
- if (yes && lookup_value != NULL)
- *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, lookup_value,
- Ustrlen(lookup_value));
+ if (yes && lookup_value && !skipping)
+ *yieldptr = string_cat(*yieldptr, lookup_value);
lookup_value = save_lookup;
}
s++;
/* The first following string must be braced. */
-if (*s++ != '{') goto FAILED_CURLY;
+if (*s++ != '{')
+ {
+ errwhere = US"'yes' part did not start with '{'";
+ goto FAILED_CURLY;
+ }
/* Expand the first substring. Forced failures are noticed only if we actually
want this string. Set skipping in the call in the fail case (this will always
be the case if we were already skipping). */
sub1 = expand_string_internal(s, TRUE, &s, !yes, TRUE, resetok);
-if (sub1 == NULL && (yes || !expand_string_forcedfail)) goto FAILED;
-expand_string_forcedfail = FALSE;
-if (*s++ != '}') goto FAILED_CURLY;
+if (sub1 == NULL && (yes || !f.expand_string_forcedfail)) goto FAILED;
+f.expand_string_forcedfail = FALSE;
+if (*s++ != '}')
+ {
+ errwhere = US"'yes' part did not end with '}'";
+ goto FAILED_CURLY;
+ }
/* If we want the first string, add it to the output */
if (yes)
- *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, sub1, Ustrlen(sub1));
+ *yieldptr = string_cat(*yieldptr, sub1);
-/* If this is called from a lookup or an extract, we want to restore $value to
-what it was at the start of the item, so that it has this value during the
-second string expansion. For the call from "if" or "run" to this function,
-save_lookup is set to lookup_value, so that this statement does nothing. */
+/* If this is called from a lookup/env or a (cert)extract, we want to restore
+$value to what it was at the start of the item, so that it has this value
+during the second string expansion. For the call from "if" or "run" to this
+function, save_lookup is set to lookup_value, so that this statement does
+nothing. */
lookup_value = save_lookup;
set skipping in the nested call if we don't want this string, or if we were
already skipping. */
-while (isspace(*s)) s++;
-if (*s == '{')
+if (skip_whitespace(&s) == '{')
{
sub2 = expand_string_internal(s+1, TRUE, &s, yes || skipping, TRUE, resetok);
- if (sub2 == NULL && (!yes || !expand_string_forcedfail)) goto FAILED;
- expand_string_forcedfail = FALSE;
- if (*s++ != '}') goto FAILED_CURLY;
+ if (sub2 == NULL && (!yes || !f.expand_string_forcedfail)) goto FAILED;
+ f.expand_string_forcedfail = FALSE;
+ if (*s++ != '}')
+ {
+ errwhere = US"'no' part did not start with '{'";
+ goto FAILED_CURLY;
+ }
/* If we want the second string, add it to the output */
if (!yes)
- *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, sub2, Ustrlen(sub2));
+ *yieldptr = string_cat(*yieldptr, sub2);
}
/* If there is no second string, but the word "fail" is present when the use of
{
if (!yes && !skipping)
{
- while (isspace(*s)) s++;
- if (*s++ != '}') goto FAILED_CURLY;
+ Uskip_whitespace(&s);
+ if (*s++ != '}')
+ {
+ errwhere = US"did not close with '}' after forcedfail";
+ goto FAILED_CURLY;
+ }
expand_string_message =
string_sprintf("\"%s\" failed and \"fail\" requested", type);
- expand_string_forcedfail = TRUE;
+ f.expand_string_forcedfail = TRUE;
goto FAILED;
}
}
/* All we have to do now is to check on the final closing brace. */
-while (isspace(*s)) s++;
-if (*s++ == '}') goto RETURN;
-
-/* Get here if there is a bracketing failure */
-
-FAILED_CURLY:
-rc++;
-
-/* Get here for other failures */
-
-FAILED:
-rc++;
+skip_whitespace(&s);
+if (*s++ != '}')
+ {
+ errwhere = US"did not close with '}'";
+ goto FAILED_CURLY;
+ }
-/* Update the input pointer value before returning */
RETURN:
+/* Update the input pointer value before returning */
*sptr = s;
return rc;
-}
-
-
-
-
-/*************************************************
-* Handle MD5 or SHA-1 computation for HMAC *
-*************************************************/
-
-/* These are some wrapping functions that enable the HMAC code to be a bit
-cleaner. A good compiler will spot the tail recursion.
-
-Arguments:
- type HMAC_MD5 or HMAC_SHA1
- remaining are as for the cryptographic hash functions
-
-Returns: nothing
-*/
-
-static void
-chash_start(int type, void *base)
-{
-if (type == HMAC_MD5)
- md5_start((md5 *)base);
-else
- sha1_start((sha1 *)base);
-}
-static void
-chash_mid(int type, void *base, uschar *string)
-{
-if (type == HMAC_MD5)
- md5_mid((md5 *)base, string);
-else
- sha1_mid((sha1 *)base, string);
-}
+FAILED_CURLY:
+ /* Get here if there is a bracketing failure */
+ expand_string_message = string_sprintf(
+ "curly-bracket problem in conditional yes/no parsing: %s\n"
+ " remaining string is '%s'", errwhere, --s);
+ rc = 2;
+ goto RETURN;
-static void
-chash_end(int type, void *base, uschar *string, int length, uschar *digest)
-{
-if (type == HMAC_MD5)
- md5_end((md5 *)base, string, length, digest);
-else
- sha1_end((sha1 *)base, string, length, digest);
+FAILED:
+ /* Get here for other failures */
+ rc = 1;
+ goto RETURN;
}
-
/********************************************************
* prvs: Get last three digits of days since Jan 1, 1970 *
********************************************************/
static uschar *
prvs_daystamp(int day_offset)
{
-uschar *days = store_get(32); /* Need at least 24 for cases */
+uschar *days = store_get(32, FALSE); /* Need at least 24 for cases */
(void)string_format(days, 32, TIME_T_FMT, /* where TIME_T_FMT is %lld */
(time(NULL) + day_offset*86400)/86400);
return (Ustrlen(days) >= 3) ? &days[Ustrlen(days)-3] : US"100";
static uschar *
prvs_hmac_sha1(uschar *address, uschar *key, uschar *key_num, uschar *daystamp)
{
-uschar *hash_source, *p;
-int size = 0,offset = 0,i;
-sha1 sha1_base;
-void *use_base = &sha1_base;
+gstring * hash_source;
+uschar * p;
+hctx h;
uschar innerhash[20];
uschar finalhash[20];
uschar innerkey[64];
uschar outerkey[64];
-uschar *finalhash_hex = store_get(40);
+uschar *finalhash_hex;
-if (key_num == NULL)
+if (!key_num)
key_num = US"0";
if (Ustrlen(key) > 64)
return NULL;
-hash_source = string_cat(NULL,&size,&offset,key_num,1);
-string_cat(hash_source,&size,&offset,daystamp,3);
-string_cat(hash_source,&size,&offset,address,Ustrlen(address));
-hash_source[offset] = '\0';
+hash_source = string_catn(NULL, key_num, 1);
+hash_source = string_catn(hash_source, daystamp, 3);
+hash_source = string_cat(hash_source, address);
+(void) string_from_gstring(hash_source);
-DEBUG(D_expand) debug_printf("prvs: hash source is '%s'\n", hash_source);
+DEBUG(D_expand)
+ debug_printf_indent("prvs: hash source is '%s'\n", hash_source->s);
memset(innerkey, 0x36, 64);
memset(outerkey, 0x5c, 64);
-for (i = 0; i < Ustrlen(key); i++)
+for (int i = 0; i < Ustrlen(key); i++)
{
innerkey[i] ^= key[i];
outerkey[i] ^= key[i];
}
-chash_start(HMAC_SHA1, use_base);
-chash_mid(HMAC_SHA1, use_base, innerkey);
-chash_end(HMAC_SHA1, use_base, hash_source, offset, innerhash);
+chash_start(HMAC_SHA1, &h);
+chash_mid(HMAC_SHA1, &h, innerkey);
+chash_end(HMAC_SHA1, &h, hash_source->s, hash_source->ptr, innerhash);
-chash_start(HMAC_SHA1, use_base);
-chash_mid(HMAC_SHA1, use_base, outerkey);
-chash_end(HMAC_SHA1, use_base, innerhash, 20, finalhash);
+chash_start(HMAC_SHA1, &h);
+chash_mid(HMAC_SHA1, &h, outerkey);
+chash_end(HMAC_SHA1, &h, innerhash, 20, finalhash);
-p = finalhash_hex;
-for (i = 0; i < 3; i++)
+/* Hashing is deemed sufficient to de-taint any input data */
+
+p = finalhash_hex = store_get(40, FALSE);
+for (int i = 0; i < 3; i++)
{
*p++ = hex_digits[(finalhash[i] & 0xf0) >> 4];
*p++ = hex_digits[finalhash[i] & 0x0f];
* Join a file onto the output string *
*************************************************/
-/* This is used for readfile and after a run expansion. It joins the contents
-of a file onto the output string, globally replacing newlines with a given
-string (optionally). The file is closed at the end.
+/* This is used for readfile/readsock and after a run expansion.
+It joins the contents of a file onto the output string, globally replacing
+newlines with a given string (optionally).
Arguments:
f the FILE
- yield pointer to the expandable string
- sizep pointer to the current size
- ptrp pointer to the current position
+ yield pointer to the expandable string struct
eol newline replacement string, or NULL
-Returns: new value of string pointer
+Returns: new pointer for expandable string, terminated if non-null
*/
-static uschar *
-cat_file(FILE *f, uschar *yield, int *sizep, int *ptrp, uschar *eol)
+gstring *
+cat_file(FILE *f, gstring *yield, uschar *eol)
{
-int eollen;
uschar buffer[1024];
-eollen = (eol == NULL)? 0 : Ustrlen(eol);
-
-while (Ufgets(buffer, sizeof(buffer), f) != NULL)
+while (Ufgets(buffer, sizeof(buffer), f))
{
int len = Ustrlen(buffer);
- if (eol != NULL && buffer[len-1] == '\n') len--;
- yield = string_cat(yield, sizep, ptrp, buffer, len);
- if (buffer[len] != 0)
- yield = string_cat(yield, sizep, ptrp, eol, eollen);
+ if (eol && buffer[len-1] == '\n') len--;
+ yield = string_catn(yield, buffer, len);
+ if (eol && buffer[len])
+ yield = string_cat(yield, eol);
}
-if (yield != NULL) yield[*ptrp] = 0;
-
+(void) string_from_gstring(yield);
return yield;
}
+#ifndef DISABLE_TLS
+gstring *
+cat_file_tls(void * tls_ctx, gstring * yield, uschar * eol)
+{
+int rc;
+uschar buffer[1024];
+
+/*XXX could we read direct into a pre-grown string? */
+
+while ((rc = tls_read(tls_ctx, buffer, sizeof(buffer))) > 0)
+ for (uschar * s = buffer; rc--; s++)
+ yield = eol && *s == '\n'
+ ? string_cat(yield, eol) : string_catn(yield, s, 1);
+
+/* We assume that all errors, and any returns of zero bytes,
+are actually EOF. */
+
+(void) string_from_gstring(yield);
+return yield;
+}
+#endif
/*************************************************
{
uschar *s = *sptr;
int_eximarith_t x = eval_op_or(&s, decimal, error);
-if (*error == NULL)
- {
+
+if (!*error)
if (endket)
- {
if (*s != ')')
*error = US"expecting closing parenthesis";
else
- while (isspace(*(++s)));
- }
- else if (*s != 0) *error = US"expecting operator";
- }
+ while (isspace(*++s));
+ else if (*s)
+ *error = US"expecting operator";
*sptr = s;
return x;
}
static int_eximarith_t
eval_number(uschar **sptr, BOOL decimal, uschar **error)
{
-register int c;
+int c;
int_eximarith_t n;
uschar *s = *sptr;
-while (isspace(*s)) s++;
-c = *s;
-if (isdigit(c))
+
+if (isdigit((c = Uskip_whitespace(&s))))
{
int count;
(void)sscanf(CS s, (decimal? SC_EXIM_DEC "%n" : SC_EXIM_ARITH "%n"), &n, &count);
case 'm': n *= 1024*1024; s++; break;
case 'g': n *= 1024*1024*1024; s++; break;
}
- while (isspace (*s)) s++;
+ Uskip_whitespace(&s);
}
else if (c == '(')
{
{
uschar *s = *sptr;
int_eximarith_t x;
-while (isspace(*s)) s++;
+Uskip_whitespace(&s);
if (*s == '+' || *s == '-' || *s == '~')
{
int op = *s++;
else if (op == '~') x = ~x;
}
else
- {
x = eval_number(&s, decimal, error);
- }
+
*sptr = s;
return x;
}
{
uschar *s = *sptr;
int_eximarith_t x = eval_op_unary(&s, decimal, error);
-if (*error == NULL)
+if (!*error)
{
while (*s == '*' || *s == '/' || *s == '%')
{
int op = *s++;
int_eximarith_t y = eval_op_unary(&s, decimal, error);
- if (*error != NULL) break;
+ if (*error) break;
/* SIGFPE both on div/mod by zero and on INT_MIN / -1, which would give
* a value of INT_MAX+1. Note that INT_MIN * -1 gives INT_MIN for me, which
* is a bug somewhere in [gcc 4.2.1, FreeBSD, amd64]. In fact, -N*-M where
- * -N*M is INT_MIN will yielf INT_MIN.
+ * -N*M is INT_MIN will yield INT_MIN.
* Since we don't support floating point, this is somewhat simpler.
* Ideally, we'd return an error, but since we overflow for all other
* arithmetic, consistency suggests otherwise, but what's the correct value
{
uschar *s = *sptr;
int_eximarith_t x = eval_op_mult(&s, decimal, error);
-if (*error == NULL)
+if (!*error)
{
while (*s == '+' || *s == '-')
{
int op = *s++;
int_eximarith_t y = eval_op_mult(&s, decimal, error);
- if (*error != NULL) break;
+ if (*error) break;
+ if ( (x >= EXIM_ARITH_MAX/2 && x >= EXIM_ARITH_MAX/2)
+ || (x <= -(EXIM_ARITH_MAX/2) && y <= -(EXIM_ARITH_MAX/2)))
+ { /* over-conservative check */
+ *error = op == '+'
+ ? US"overflow in sum" : US"overflow in difference";
+ break;
+ }
if (op == '+') x += y; else x -= y;
}
}
{
uschar *s = *sptr;
int_eximarith_t x = eval_op_sum(&s, decimal, error);
-if (*error == NULL)
+if (!*error)
{
while ((*s == '<' || *s == '>') && s[1] == s[0])
{
int op = *s++;
s++;
y = eval_op_sum(&s, decimal, error);
- if (*error != NULL) break;
+ if (*error) break;
if (op == '<') x <<= y; else x >>= y;
}
}
{
uschar *s = *sptr;
int_eximarith_t x = eval_op_shift(&s, decimal, error);
-if (*error == NULL)
+if (!*error)
{
while (*s == '&')
{
int_eximarith_t y;
s++;
y = eval_op_shift(&s, decimal, error);
- if (*error != NULL) break;
+ if (*error) break;
x &= y;
}
}
{
uschar *s = *sptr;
int_eximarith_t x = eval_op_and(&s, decimal, error);
-if (*error == NULL)
+if (!*error)
{
while (*s == '^')
{
int_eximarith_t y;
s++;
y = eval_op_and(&s, decimal, error);
- if (*error != NULL) break;
+ if (*error) break;
x ^= y;
}
}
{
uschar *s = *sptr;
int_eximarith_t x = eval_op_xor(&s, decimal, error);
-if (*error == NULL)
+if (!*error)
{
while (*s == '|')
{
int_eximarith_t y;
s++;
y = eval_op_xor(&s, decimal, error);
- if (*error != NULL) break;
+ if (*error) break;
x |= y;
}
}
+/************************************************/
+/* Comparison operation for sort expansion. We need to avoid
+re-expanding the fields being compared, so need a custom routine.
+
+Arguments:
+ cond_type Comparison operator code
+ leftarg, rightarg Arguments for comparison
+
+Return true iff (leftarg compare rightarg)
+*/
+
+static BOOL
+sortsbefore(int cond_type, BOOL alpha_cond,
+ const uschar * leftarg, const uschar * rightarg)
+{
+int_eximarith_t l_num, r_num;
+
+if (!alpha_cond)
+ {
+ l_num = expanded_string_integer(leftarg, FALSE);
+ if (expand_string_message) return FALSE;
+ r_num = expanded_string_integer(rightarg, FALSE);
+ if (expand_string_message) return FALSE;
+
+ switch (cond_type)
+ {
+ case ECOND_NUM_G: return l_num > r_num;
+ case ECOND_NUM_GE: return l_num >= r_num;
+ case ECOND_NUM_L: return l_num < r_num;
+ case ECOND_NUM_LE: return l_num <= r_num;
+ default: break;
+ }
+ }
+else
+ switch (cond_type)
+ {
+ case ECOND_STR_LT: return Ustrcmp (leftarg, rightarg) < 0;
+ case ECOND_STR_LTI: return strcmpic(leftarg, rightarg) < 0;
+ case ECOND_STR_LE: return Ustrcmp (leftarg, rightarg) <= 0;
+ case ECOND_STR_LEI: return strcmpic(leftarg, rightarg) <= 0;
+ case ECOND_STR_GT: return Ustrcmp (leftarg, rightarg) > 0;
+ case ECOND_STR_GTI: return strcmpic(leftarg, rightarg) > 0;
+ case ECOND_STR_GE: return Ustrcmp (leftarg, rightarg) >= 0;
+ case ECOND_STR_GEI: return strcmpic(leftarg, rightarg) >= 0;
+ default: break;
+ }
+return FALSE; /* should not happen */
+}
+
+
/*************************************************
* Expand string *
*************************************************/
We use an internal routine recursively to handle embedded substrings. The
external function follows. The yield is NULL if the expansion failed, and there
are two cases: if something collapsed syntactically, or if "fail" was given
-as the action on a lookup failure. These can be distinguised by looking at the
+as the action on a lookup failure. These can be distinguished by looking at the
variable expand_string_forcedfail, which is TRUE in the latter case.
The skipping flag is set true when expanding a substring that isn't actually
expand_string_internal(const uschar *string, BOOL ket_ends, const uschar **left,
BOOL skipping, BOOL honour_dollar, BOOL *resetok_p)
{
-int ptr = 0;
-int size = Ustrlen(string)+ 64;
+rmark reset_point = store_mark();
+gstring * yield = string_get(Ustrlen(string) + 64);
int item_type;
-uschar *yield = store_get(size);
const uschar *s = string;
uschar *save_expand_nstring[EXPAND_MAXN+1];
int save_expand_nlength[EXPAND_MAXN+1];
BOOL resetok = TRUE;
-expand_string_forcedfail = FALSE;
+expand_level++;
+DEBUG(D_expand)
+ DEBUG(D_noutf8)
+ debug_printf_indent("/%s: %s\n",
+ skipping ? "---scanning" : "considering", string);
+ else
+ debug_printf_indent(UTF8_DOWN_RIGHT "%s: %s\n",
+ skipping
+ ? UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ "scanning"
+ : "considering",
+ string);
+
+f.expand_string_forcedfail = FALSE;
expand_string_message = US"";
+if (is_tainted(string))
+ {
+ expand_string_message =
+ string_sprintf("attempt to expand tainted string '%s'", s);
+ log_write(0, LOG_MAIN|LOG_PANIC, "%s", expand_string_message);
+ goto EXPAND_FAILED;
+ }
+
while (*s != 0)
{
uschar *value;
{
const uschar * t = s + 2;
for (s = t; *s != 0; s++) if (*s == '\\' && s[1] == 'N') break;
- yield = string_cat(yield, &size, &ptr, t, s - t);
+ yield = string_catn(yield, t, s - t);
if (*s != 0) s += 2;
}
uschar ch[1];
ch[0] = string_interpret_escape(&s);
s++;
- yield = string_cat(yield, &size, &ptr, ch, 1);
+ yield = string_catn(yield, ch, 1);
}
continue;
if (*s != '$' || !honour_dollar)
{
- yield = string_cat(yield, &size, &ptr, s++, 1);
+ yield = string_catn(yield, s++, 1);
continue;
}
{
int len;
int newsize = 0;
+ gstring * g = NULL;
+ uschar * t;
s = read_name(name, sizeof(name), s, US"_");
/* If this is the first thing to be expanded, release the pre-allocated
buffer. */
- if (ptr == 0 && yield != NULL)
+ if (!yield)
+ g = store_get(sizeof(gstring), FALSE);
+ else if (yield->ptr == 0)
{
- if (resetok) store_reset(yield);
+ if (resetok) reset_point = store_reset(reset_point);
yield = NULL;
- size = 0;
+ reset_point = store_mark();
+ g = store_get(sizeof(gstring), FALSE); /* alloc _before_ calling find_variable() */
}
/* Header */
- if (Ustrncmp(name, "h_", 2) == 0 ||
- Ustrncmp(name, "rh_", 3) == 0 ||
- Ustrncmp(name, "bh_", 3) == 0 ||
- Ustrncmp(name, "header_", 7) == 0 ||
- Ustrncmp(name, "rheader_", 8) == 0 ||
- Ustrncmp(name, "bheader_", 8) == 0)
+ if ( ( *(t = name) == 'h'
+ || (*t == 'r' || *t == 'l' || *t == 'b') && *++t == 'h'
+ )
+ && (*++t == '_' || Ustrncmp(t, "eader_", 6) == 0)
+ )
{
- BOOL want_raw = (name[0] == 'r')? TRUE : FALSE;
- uschar *charset = (name[0] == 'b')? NULL : headers_charset;
+ unsigned flags = *name == 'r' ? FH_WANT_RAW
+ : *name == 'l' ? FH_WANT_RAW|FH_WANT_LIST
+ : 0;
+ uschar * charset = *name == 'b' ? NULL : headers_charset;
+
s = read_header_name(name, sizeof(name), s);
- value = find_header(name, FALSE, &newsize, want_raw, charset);
+ value = find_header(name, &newsize, flags, charset);
/* If we didn't find the header, and the header contains a closing brace
character, this may be a user error where the terminating colon
has been omitted. Set a flag to adjust the error message in this case.
But there is no error here - nothing gets inserted. */
- if (value == NULL)
+ if (!value)
{
- if (Ustrchr(name, '}') != NULL) malformed_header = TRUE;
+ if (Ustrchr(name, '}')) malformed_header = TRUE;
continue;
}
}
/* Variable */
- else
+ else if (!(value = find_variable(name, FALSE, skipping, &newsize)))
{
- value = find_variable(name, FALSE, skipping, &newsize);
- if (value == NULL)
- {
- expand_string_message =
- string_sprintf("unknown variable name \"%s\"", name);
- check_variable_error_message(name);
- goto EXPAND_FAILED;
- }
+ expand_string_message =
+ string_sprintf("unknown variable name \"%s\"", name);
+ check_variable_error_message(name);
+ goto EXPAND_FAILED;
}
/* If the data is known to be in a new buffer, newsize will be set to the
size of that buffer. If this is the first thing in an expansion string,
yield will be NULL; just point it at the new store instead of copying. Many
expansion strings contain just one reference, so this is a useful
- optimization, especially for humungous headers. */
+ optimization, especially for humungous headers. We need to use a gstring
+ structure that is not allocated after that new-buffer, else a later store
+ reset in the middle of the buffer will make it inaccessible. */
len = Ustrlen(value);
- if (yield == NULL && newsize != 0)
+ if (!yield && newsize != 0)
{
- yield = value;
- size = newsize;
- ptr = len;
+ yield = g;
+ yield->size = newsize;
+ yield->ptr = len;
+ yield->s = value;
}
- else yield = string_cat(yield, &size, &ptr, value, len);
+ else
+ yield = string_catn(yield, value, len);
continue;
}
int n;
s = read_cnumber(&n, s);
if (n >= 0 && n <= expand_nmax)
- yield = string_cat(yield, &size, &ptr, expand_nstring[n],
- expand_nlength[n]);
+ yield = string_catn(yield, expand_nstring[n], expand_nlength[n]);
continue;
}
goto EXPAND_FAILED;
}
if (n >= 0 && n <= expand_nmax)
- yield = string_cat(yield, &size, &ptr, expand_nstring[n],
- expand_nlength[n]);
+ yield = string_catn(yield, expand_nstring[n], expand_nlength[n]);
continue;
}
{
uschar *sub[10]; /* name + arg1-arg9 (which must match number of acl_arg[]) */
uschar *user_msg;
+ int rc;
- switch(read_subs(sub, nelem(sub), 1, &s, skipping, TRUE, US"acl",
+ switch(read_subs(sub, nelem(sub), 1, &s, skipping, TRUE, name,
&resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
if (skipping) continue;
resetok = FALSE;
- switch(eval_acl(sub, nelem(sub), &user_msg))
+ switch(rc = eval_acl(sub, nelem(sub), &user_msg))
{
case OK:
case FAIL:
DEBUG(D_expand)
- debug_printf("acl expansion yield: %s\n", user_msg);
+ debug_printf_indent("acl expansion yield: %s\n", user_msg);
if (user_msg)
- yield = string_cat(yield, &size, &ptr, user_msg, Ustrlen(user_msg));
+ yield = string_cat(yield, user_msg);
continue;
case DEFER:
- expand_string_forcedfail = TRUE;
+ f.expand_string_forcedfail = TRUE;
+ /*FALLTHROUGH*/
default:
- expand_string_message = string_sprintf("error from acl \"%s\"", sub[0]);
+ expand_string_message = string_sprintf("%s from acl \"%s\"",
+ rc_names[rc], sub[0]);
goto EXPAND_FAILED;
}
}
+ case EITEM_AUTHRESULTS:
+ /* ${authresults {mysystemname}} */
+ {
+ uschar *sub_arg[1];
+
+ switch(read_subs(sub_arg, nelem(sub_arg), 1, &s, skipping, TRUE, name,
+ &resetok))
+ {
+ case 1: goto EXPAND_FAILED_CURLY;
+ case 2:
+ case 3: goto EXPAND_FAILED;
+ }
+
+ yield = string_append(yield, 3,
+ US"Authentication-Results: ", sub_arg[0], US"; none");
+ yield->ptr -= 6;
+
+ yield = authres_local(yield, sub_arg[0]);
+ yield = authres_iprev(yield);
+ yield = authres_smtpauth(yield);
+#ifdef SUPPORT_SPF
+ yield = authres_spf(yield);
+#endif
+#ifndef DISABLE_DKIM
+ yield = authres_dkim(yield);
+#endif
+#ifdef SUPPORT_DMARC
+ yield = authres_dmarc(yield);
+#endif
+#ifdef EXPERIMENTAL_ARC
+ yield = authres_arc(yield);
+#endif
+ continue;
+ }
+
/* Handle conditionals - preserve the values of the numerical expansion
variables in case they get changed by a regular expression match in the
condition. If not, they retain their external settings. At the end
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
- while (isspace(*s)) s++;
- next_s = eval_condition(s, &resetok, skipping? NULL : &cond);
- if (next_s == NULL) goto EXPAND_FAILED; /* message already set */
+ Uskip_whitespace(&s);
+ if (!(next_s = eval_condition(s, &resetok, skipping ? NULL : &cond)))
+ goto EXPAND_FAILED; /* message already set */
DEBUG(D_expand)
- debug_printf("condition: %.*s\n result: %s\n", (int)(next_s - s), s,
- cond? "true" : "false");
+ DEBUG(D_noutf8)
+ {
+ debug_printf_indent("|--condition: %.*s\n", (int)(next_s - s), s);
+ debug_printf_indent("|-----result: %s\n", cond ? "true" : "false");
+ }
+ else
+ {
+ debug_printf_indent(UTF8_VERT_RIGHT UTF8_HORIZ UTF8_HORIZ
+ "condition: %.*s\n",
+ (int)(next_s - s), s);
+ debug_printf_indent(UTF8_VERT_RIGHT UTF8_HORIZ UTF8_HORIZ
+ UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ
+ "result: %s\n",
+ cond ? "true" : "false");
+ }
s = next_s;
lookup_value, /* value to reset for string2 */
&s, /* input pointer */
&yield, /* output pointer */
- &size, /* output size */
- &ptr, /* output current point */
US"if", /* condition type */
&resetok))
{
case 3: goto EXPAND_FAILED;
}
- if (sub_arg[1] == NULL) /* One argument */
+ if (!sub_arg[1]) /* One argument */
{
sub_arg[1] = US"/"; /* default separator */
sub_arg[2] = NULL;
goto EXPAND_FAILED;
}
- if (!(encoded = imap_utf7_encode(sub_arg[0], headers_charset,
- sub_arg[1][0], sub_arg[2], &expand_string_message)))
- goto EXPAND_FAILED;
if (!skipping)
- yield = string_cat(yield, &size, &ptr, encoded, Ustrlen(encoded));
+ {
+ if (!(encoded = imap_utf7_encode(sub_arg[0], headers_charset,
+ sub_arg[1][0], sub_arg[2], &expand_string_message)))
+ goto EXPAND_FAILED;
+ yield = string_cat(yield, encoded);
+ }
continue;
}
#endif
int expand_setup = 0;
int nameptr = 0;
uschar *key, *filename;
- const uschar *affix;
+ const uschar * affix, * opts;
uschar *save_lookup_value = lookup_value;
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
/* Get the key we are to look up for single-key+file style lookups.
Otherwise set the key NULL pro-tem. */
- while (isspace(*s)) s++;
- if (*s == '{') /*}*/
+ if (Uskip_whitespace(&s) == '{') /*}*/
{
key = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
- if (key == NULL) goto EXPAND_FAILED; /*{*/
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
- while (isspace(*s)) s++;
+ if (!key) goto EXPAND_FAILED; /*{{*/
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' after lookup key";
+ goto EXPAND_FAILED_CURLY;
+ }
+ Uskip_whitespace(&s);
}
else key = NULL;
kinds. Allow everything except space or { to appear; the actual content
is checked by search_findtype_partial. */ /*}*/
- while (*s != 0 && *s != '{' && !isspace(*s)) /*}*/
+ while (*s && *s != '{' && !isspace(*s)) /*}*/
{
if (nameptr < sizeof(name) - 1) name[nameptr++] = *s;
s++;
}
- name[nameptr] = 0;
- while (isspace(*s)) s++;
+ name[nameptr] = '\0';
+ Uskip_whitespace(&s);
/* Now check for the individual search type and any partial or default
options. Only those types that are actually in the binary are valid. */
- stype = search_findtype_partial(name, &partial, &affix, &affixlen,
- &starflags);
- if (stype < 0)
+ if ((stype = search_findtype_partial(name, &partial, &affix, &affixlen,
+ &starflags, &opts)) < 0)
{
expand_string_message = search_error_message;
goto EXPAND_FAILED;
if (!mac_islookup(stype, lookup_querystyle|lookup_absfilequery))
{
- if (key == NULL)
+ if (!key)
{
expand_string_message = string_sprintf("missing {key} for single-"
"key \"%s\" lookup", name);
}
else
{
- if (key != NULL)
+ if (key)
{
expand_string_message = string_sprintf("a single key was given for "
"lookup type \"%s\", which is not a single-key lookup type", name);
queries that also require a file name (e.g. sqlite), the file name comes
first. */
- if (*s != '{') goto EXPAND_FAILED_CURLY;
- filename = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
- if (filename == NULL) goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
- while (isspace(*s)) s++;
+ if (*s != '{')
+ {
+ expand_string_message = US"missing '{' for lookup file-or-query arg";
+ goto EXPAND_FAILED_CURLY;
+ }
+ if (!(filename = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok)))
+ goto EXPAND_FAILED;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing lookup file-or-query arg";
+ goto EXPAND_FAILED_CURLY;
+ }
+ Uskip_whitespace(&s);
/* If this isn't a single-key+file lookup, re-arrange the variables
to be appropriate for the search_ functions. For query-style lookups,
there is just a "key", and no file name. For the special query-style +
file types, the query (i.e. "key") starts with a file name. */
- if (key == NULL)
+ if (!key)
{
- while (isspace(*filename)) filename++;
+ Uskip_whitespace(&filename);
key = filename;
if (mac_islookup(stype, lookup_querystyle))
- {
filename = NULL;
- }
else
- {
- if (*filename != '/')
- {
- expand_string_message = string_sprintf(
- "absolute file name expected for \"%s\" lookup", name);
- goto EXPAND_FAILED;
- }
- while (*key != 0 && !isspace(*key)) key++;
- if (*key != 0) *key++ = 0;
- }
+ if (*filename == '/')
+ {
+ while (*key && !isspace(*key)) key++;
+ if (*key) *key++ = '\0';
+ }
+ else
+ filename = NULL;
}
/* If skipping, don't do the next bit - just lookup_value == NULL, as if
else
{
void *handle = search_open(filename, stype, 0, NULL, NULL);
- if (handle == NULL)
+ if (!handle)
{
expand_string_message = search_error_message;
goto EXPAND_FAILED;
}
lookup_value = search_find(handle, filename, key, partial, affix,
- affixlen, starflags, &expand_setup);
- if (search_find_defer)
+ affixlen, starflags, &expand_setup, opts);
+ if (f.search_find_defer)
{
expand_string_message =
string_sprintf("lookup of \"%s\" gave DEFER: %s",
save_lookup_value, /* value to reset for string2 */
&s, /* input pointer */
&yield, /* output pointer */
- &size, /* output size */
- &ptr, /* output current point */
US"lookup", /* condition type */
&resetok))
{
#else /* EXIM_PERL */
{
uschar *sub_arg[EXIM_PERL_MAX_ARGS + 2];
- uschar *new_yield;
+ gstring *new_yield;
if ((expand_forbid & RDO_PERL) != 0)
{
}
switch(read_subs(sub_arg, EXIM_PERL_MAX_ARGS + 1, 1, &s, skipping, TRUE,
- US"perl", &resetok))
+ name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
if (!opt_perl_started)
{
uschar *initerror;
- if (opt_perl_startup == NULL)
+ if (!opt_perl_startup)
{
expand_string_message = US"A setting of perl_startup is needed when "
"using the Perl interpreter";
goto EXPAND_FAILED;
}
DEBUG(D_any) debug_printf("Starting Perl interpreter\n");
- initerror = init_perl(opt_perl_startup);
- if (initerror != NULL)
+ if ((initerror = init_perl(opt_perl_startup)))
{
expand_string_message =
string_sprintf("error in perl_startup code: %s\n", initerror);
/* Call the function */
sub_arg[EXIM_PERL_MAX_ARGS + 1] = NULL;
- new_yield = call_perl_cat(yield, &size, &ptr, &expand_string_message,
+ new_yield = call_perl_cat(yield, &expand_string_message,
sub_arg[0], sub_arg + 1);
/* NULL yield indicates failure; if the message pointer has been set to
NULL, the yield was undef, indicating a forced failure. Otherwise the
message will indicate some kind of Perl error. */
- if (new_yield == NULL)
+ if (!new_yield)
{
- if (expand_string_message == NULL)
+ if (!expand_string_message)
{
expand_string_message =
string_sprintf("Perl subroutine \"%s\" returned undef to force "
"failure", sub_arg[0]);
- expand_string_forcedfail = TRUE;
+ f.expand_string_forcedfail = TRUE;
}
goto EXPAND_FAILED;
}
/* Yield succeeded. Ensure forcedfail is unset, just in case it got
set during a callback from Perl. */
- expand_string_forcedfail = FALSE;
+ f.expand_string_forcedfail = FALSE;
yield = new_yield;
continue;
}
uschar *sub_arg[3];
uschar *p,*domain;
- switch(read_subs(sub_arg, 3, 2, &s, skipping, TRUE, US"prvs", &resetok))
+ switch(read_subs(sub_arg, 3, 2, &s, skipping, TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
if (skipping) continue;
/* sub_arg[0] is the address */
- domain = Ustrrchr(sub_arg[0],'@');
- if ( (domain == NULL) || (domain == sub_arg[0]) || (Ustrlen(domain) == 1) )
+ if ( !(domain = Ustrrchr(sub_arg[0],'@'))
+ || domain == sub_arg[0] || Ustrlen(domain) == 1)
{
expand_string_message = US"prvs first argument must be a qualified email address";
goto EXPAND_FAILED;
}
- /* Calculate the hash. The second argument must be a single-digit
+ /* Calculate the hash. The third argument must be a single-digit
key number, or unset. */
- if (sub_arg[2] != NULL &&
- (!isdigit(sub_arg[2][0]) || sub_arg[2][1] != 0))
+ if ( sub_arg[2]
+ && (!isdigit(sub_arg[2][0]) || sub_arg[2][1] != 0))
{
- expand_string_message = US"prvs second argument must be a single digit";
+ expand_string_message = US"prvs third argument must be a single digit";
goto EXPAND_FAILED;
}
- p = prvs_hmac_sha1(sub_arg[0],sub_arg[1],sub_arg[2],prvs_daystamp(7));
- if (p == NULL)
+ p = prvs_hmac_sha1(sub_arg[0], sub_arg[1], sub_arg[2], prvs_daystamp(7));
+ if (!p)
{
expand_string_message = US"prvs hmac-sha1 conversion failed";
goto EXPAND_FAILED;
/* Now separate the domain from the local part */
*domain++ = '\0';
- yield = string_cat(yield,&size,&ptr,US"prvs=",5);
- string_cat(yield,&size,&ptr,(sub_arg[2] != NULL) ? sub_arg[2] : US"0", 1);
- string_cat(yield,&size,&ptr,prvs_daystamp(7),3);
- string_cat(yield,&size,&ptr,p,6);
- string_cat(yield,&size,&ptr,US"=",1);
- string_cat(yield,&size,&ptr,sub_arg[0],Ustrlen(sub_arg[0]));
- string_cat(yield,&size,&ptr,US"@",1);
- string_cat(yield,&size,&ptr,domain,Ustrlen(domain));
+ yield = string_catn(yield, US"prvs=", 5);
+ yield = string_catn(yield, sub_arg[2] ? sub_arg[2] : US"0", 1);
+ yield = string_catn(yield, prvs_daystamp(7), 3);
+ yield = string_catn(yield, p, 6);
+ yield = string_catn(yield, US"=", 1);
+ yield = string_cat (yield, sub_arg[0]);
+ yield = string_catn(yield, US"@", 1);
+ yield = string_cat (yield, domain);
continue;
}
case EITEM_PRVSCHECK:
{
uschar *sub_arg[3];
- int mysize = 0, myptr = 0;
+ gstring * g;
const pcre *re;
uschar *p;
prvscheck_address = NULL;
prvscheck_keynum = NULL;
- switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs", &resetok))
+ switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
uschar *hash = string_copyn(expand_nstring[3],expand_nlength[3]);
uschar *domain = string_copyn(expand_nstring[5],expand_nlength[5]);
- DEBUG(D_expand) debug_printf("prvscheck localpart: %s\n", local_part);
- DEBUG(D_expand) debug_printf("prvscheck key number: %s\n", key_num);
- DEBUG(D_expand) debug_printf("prvscheck daystamp: %s\n", daystamp);
- DEBUG(D_expand) debug_printf("prvscheck hash: %s\n", hash);
- DEBUG(D_expand) debug_printf("prvscheck domain: %s\n", domain);
+ DEBUG(D_expand) debug_printf_indent("prvscheck localpart: %s\n", local_part);
+ DEBUG(D_expand) debug_printf_indent("prvscheck key number: %s\n", key_num);
+ DEBUG(D_expand) debug_printf_indent("prvscheck daystamp: %s\n", daystamp);
+ DEBUG(D_expand) debug_printf_indent("prvscheck hash: %s\n", hash);
+ DEBUG(D_expand) debug_printf_indent("prvscheck domain: %s\n", domain);
/* Set up expansion variables */
- prvscheck_address = string_cat(NULL, &mysize, &myptr, local_part, Ustrlen(local_part));
- string_cat(prvscheck_address,&mysize,&myptr,US"@",1);
- string_cat(prvscheck_address,&mysize,&myptr,domain,Ustrlen(domain));
- prvscheck_address[myptr] = '\0';
+ g = string_cat (NULL, local_part);
+ g = string_catn(g, US"@", 1);
+ g = string_cat (g, domain);
+ prvscheck_address = string_from_gstring(g);
prvscheck_keynum = string_copy(key_num);
/* Now expand the second argument */
- switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs", &resetok))
+ switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
p = prvs_hmac_sha1(prvscheck_address, sub_arg[0], prvscheck_keynum,
daystamp);
- if (p == NULL)
+ if (!p)
{
expand_string_message = US"hmac-sha1 conversion failed";
goto EXPAND_FAILED;
}
- DEBUG(D_expand) debug_printf("prvscheck: received hash is %s\n", hash);
- DEBUG(D_expand) debug_printf("prvscheck: own hash is %s\n", p);
+ DEBUG(D_expand) debug_printf_indent("prvscheck: received hash is %s\n", hash);
+ DEBUG(D_expand) debug_printf_indent("prvscheck: own hash is %s\n", p);
if (Ustrcmp(p,hash) == 0)
{
(void)sscanf(CS now,"%u",&inow);
(void)sscanf(CS daystamp,"%u",&iexpire);
- /* When "iexpire" is < 7, a "flip" has occured.
+ /* When "iexpire" is < 7, a "flip" has occurred.
Adjust "inow" accordingly. */
if ( (iexpire < 7) && (inow >= 993) ) inow = 0;
if (iexpire >= inow)
{
prvscheck_result = US"1";
- DEBUG(D_expand) debug_printf("prvscheck: success, $pvrs_result set to 1\n");
+ DEBUG(D_expand) debug_printf_indent("prvscheck: success, $pvrs_result set to 1\n");
}
- else
+ else
{
prvscheck_result = NULL;
- DEBUG(D_expand) debug_printf("prvscheck: signature expired, $pvrs_result unset\n");
+ DEBUG(D_expand) debug_printf_indent("prvscheck: signature expired, $pvrs_result unset\n");
}
}
else
{
prvscheck_result = NULL;
- DEBUG(D_expand) debug_printf("prvscheck: hash failure, $pvrs_result unset\n");
+ DEBUG(D_expand) debug_printf_indent("prvscheck: hash failure, $pvrs_result unset\n");
}
/* Now expand the final argument. We leave this till now so that
it can include $prvscheck_result. */
- switch(read_subs(sub_arg, 1, 0, &s, skipping, TRUE, US"prvs", &resetok))
+ switch(read_subs(sub_arg, 1, 0, &s, skipping, TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- if (sub_arg[0] == NULL || *sub_arg[0] == '\0')
- yield = string_cat(yield,&size,&ptr,prvscheck_address,Ustrlen(prvscheck_address));
- else
- yield = string_cat(yield,&size,&ptr,sub_arg[0],Ustrlen(sub_arg[0]));
+ yield = string_cat(yield,
+ !sub_arg[0] || !*sub_arg[0] ? prvscheck_address : sub_arg[0]);
/* Reset the "internal" variables afterwards, because they are in
dynamic store that will be reclaimed if the expansion succeeded. */
prvscheck_keynum = NULL;
}
else
- {
/* Does not look like a prvs encoded address, return the empty string.
We need to make sure all subs are expanded first, so as to skip over
the entire item. */
- switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, US"prvs", &resetok))
+ switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- }
continue;
}
goto EXPAND_FAILED;
}
- switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, US"readfile", &resetok))
+ switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
/* Open the file and read it */
- f = Ufopen(sub_arg[0], "rb");
- if (f == NULL)
+ if (!(f = Ufopen(sub_arg[0], "rb")))
{
expand_string_message = string_open_failed(errno, "%s", sub_arg[0]);
goto EXPAND_FAILED;
}
- yield = cat_file(f, yield, &size, &ptr, sub_arg[1]);
+ yield = cat_file(f, yield, sub_arg[1]);
(void)fclose(f);
continue;
}
- /* Handle "readsocket" to insert data from a Unix domain socket */
+ /* Handle "readsocket" to insert data from a socket, either
+ Inet or Unix domain */
case EITEM_READSOCK:
{
- int fd;
+ client_conn_ctx cctx;
int timeout = 5;
- int save_ptr = ptr;
- FILE *f;
- struct sockaddr_un sockun; /* don't call this "sun" ! */
- uschar *arg;
- uschar *sub_arg[4];
-
- if ((expand_forbid & RDO_READSOCK) != 0)
+ int save_ptr = gstring_length(yield);
+ FILE * fp = NULL;
+ uschar * arg;
+ uschar * sub_arg[4];
+ uschar * server_name = NULL;
+ host_item host;
+ BOOL do_shutdown = TRUE;
+ BOOL do_tls = FALSE; /* Only set under ! DISABLE_TLS */
+
+ if (expand_forbid & RDO_READSOCK)
{
expand_string_message = US"socket insertions are not permitted";
goto EXPAND_FAILED;
/* Read up to 4 arguments, but don't do the end of item check afterwards,
because there may be a string for expansion on failure. */
- switch(read_subs(sub_arg, 4, 2, &s, skipping, FALSE, US"readsocket", &resetok))
+ switch(read_subs(sub_arg, 4, 2, &s, skipping, FALSE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2: /* Won't occur: no end check */
case 3: goto EXPAND_FAILED;
}
- /* Sort out timeout, if given */
-
- if (sub_arg[2] != NULL)
- {
- timeout = readconf_readtime(sub_arg[2], 0, FALSE);
- if (timeout < 0)
- {
- expand_string_message = string_sprintf("bad time value %s",
- sub_arg[2]);
- goto EXPAND_FAILED;
- }
- }
- else sub_arg[3] = NULL; /* No eol if no timeout */
-
/* If skipping, we don't actually do anything. Otherwise, arrange to
connect to either an IP or a Unix socket. */
if (!skipping)
{
- /* Handle an IP (internet) domain */
+ int stype = search_findtype(US"readsock", 8);
+ gstring * g = NULL;
+ void * handle;
+ int expand_setup = -1;
+ uschar * s;
- if (Ustrncmp(sub_arg[0], "inet:", 5) == 0)
- {
- int port;
- uschar *server_name = sub_arg[0] + 5;
- uschar *port_name = Ustrrchr(server_name, ':');
-
- /* Sort out the port */
+ /* If the reqstr is empty, flag that and set a dummy */
- if (port_name == NULL)
- {
- expand_string_message =
- string_sprintf("missing port for readsocket %s", sub_arg[0]);
- goto EXPAND_FAILED;
- }
- *port_name++ = 0; /* Terminate server name */
-
- if (isdigit(*port_name))
- {
- uschar *end;
- port = Ustrtol(port_name, &end, 0);
- if (end != port_name + Ustrlen(port_name))
- {
- expand_string_message =
- string_sprintf("invalid port number %s", port_name);
- goto EXPAND_FAILED;
- }
- }
- else
- {
- struct servent *service_info = getservbyname(CS port_name, "tcp");
- if (service_info == NULL)
- {
- expand_string_message = string_sprintf("unknown port \"%s\"",
- port_name);
- goto EXPAND_FAILED;
- }
- port = ntohs(service_info->s_port);
- }
-
- if ((fd = ip_connectedsocket(SOCK_STREAM, server_name, port, port,
- timeout, NULL, &expand_string_message)) < 0)
- goto SOCK_FAIL;
- }
-
- /* Handle a Unix domain socket */
-
- else
- {
- int rc;
- if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) == -1)
- {
- expand_string_message = string_sprintf("failed to create socket: %s",
- strerror(errno));
- goto SOCK_FAIL;
- }
-
- sockun.sun_family = AF_UNIX;
- sprintf(sockun.sun_path, "%.*s", (int)(sizeof(sockun.sun_path)-1),
- sub_arg[0]);
-
- sigalrm_seen = FALSE;
- alarm(timeout);
- rc = connect(fd, (struct sockaddr *)(&sockun), sizeof(sockun));
- alarm(0);
- if (sigalrm_seen)
- {
- expand_string_message = US "socket connect timed out";
- goto SOCK_FAIL;
- }
- if (rc < 0)
- {
- expand_string_message = string_sprintf("failed to connect to socket "
- "%s: %s", sub_arg[0], strerror(errno));
- goto SOCK_FAIL;
- }
- }
+ if (!sub_arg[1][0])
+ {
+ g = string_append_listele(g, ',', US"send=no");
+ sub_arg[1] = US"DUMMY";
+ }
- DEBUG(D_expand) debug_printf("connected to socket %s\n", sub_arg[0]);
+ /* Re-marshall the options */
- /* Allow sequencing of test actions */
- if (running_in_test_harness) millisleep(100);
+ if (sub_arg[2])
+ {
+ const uschar * list = sub_arg[2];
+ uschar * item;
+ int sep = 0;
- /* Write the request string, if not empty */
+ /* First option has no tag and is timeout */
+ if ((item = string_nextinlist(&list, &sep, NULL, 0)))
+ g = string_append_listele(g, ',',
+ string_sprintf("timeout=%s", item));
- if (sub_arg[1][0] != 0)
- {
- int len = Ustrlen(sub_arg[1]);
- DEBUG(D_expand) debug_printf("writing \"%s\" to socket\n",
- sub_arg[1]);
- if (write(fd, sub_arg[1], len) != len)
- {
- expand_string_message = string_sprintf("request write to socket "
- "failed: %s", strerror(errno));
- goto SOCK_FAIL;
- }
- }
+ /* The rest of the options from the expansion */
+ while ((item = string_nextinlist(&list, &sep, NULL, 0)))
+ g = string_append_listele(g, ',', item);
- /* Shut down the sending side of the socket. This helps some servers to
- recognise that it is their turn to do some work. Just in case some
- system doesn't have this function, make it conditional. */
+ /* possibly plus an EOL string */
+ if (sub_arg[3] && *sub_arg[3])
+ g = string_append_listele(g, ',',
+ string_sprintf("eol=%s", sub_arg[3]));
- #ifdef SHUT_WR
- shutdown(fd, SHUT_WR);
- #endif
-
- if (running_in_test_harness) millisleep(100);
+ }
- /* Now we need to read from the socket, under a timeout. The function
- that reads a file can be used. */
+ /* Gat a (possibly cached) handle for the connection */
- f = fdopen(fd, "rb");
- sigalrm_seen = FALSE;
- alarm(timeout);
- yield = cat_file(f, yield, &size, &ptr, sub_arg[3]);
- alarm(0);
- (void)fclose(f);
+ if (!(handle = search_open(sub_arg[0], stype, 0, NULL, NULL)))
+ {
+ if (*expand_string_message) goto EXPAND_FAILED;
+ expand_string_message = search_error_message;
+ search_error_message = NULL;
+ goto SOCK_FAIL;
+ }
- /* After a timeout, we restore the pointer in the result, that is,
- make sure we add nothing from the socket. */
+ /* Get (possibly cached) results for the lookup */
+ /* sspec: sub_arg[0] req: sub_arg[1] opts: g */
- if (sigalrm_seen)
- {
- ptr = save_ptr;
- expand_string_message = US "socket read timed out";
- goto SOCK_FAIL;
- }
+ if ((s = search_find(handle, sub_arg[0], sub_arg[1], -1, NULL, 0, 0,
+ &expand_setup, string_from_gstring(g))))
+ yield = string_cat(yield, s);
+ else if (f.search_find_defer)
+ {
+ expand_string_message = search_error_message;
+ search_error_message = NULL;
+ goto SOCK_FAIL;
+ }
+ else
+ { /* should not happen, at present */
+ expand_string_message = search_error_message;
+ search_error_message = NULL;
+ goto SOCK_FAIL;
+ }
}
/* The whole thing has worked (or we were skipping). If there is a
if (*s == '{')
{
- if (expand_string_internal(s+1, TRUE, &s, TRUE, TRUE, &resetok) == NULL)
+ if (!expand_string_internal(s+1, TRUE, &s, TRUE, TRUE, &resetok))
goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
- while (isspace(*s)) s++;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing failstring for readsocket";
+ goto EXPAND_FAILED_CURLY;
+ }
+ Uskip_whitespace(&s);
}
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+
+ READSOCK_DONE:
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing readsocket";
+ goto EXPAND_FAILED_CURLY;
+ }
continue;
/* Come here on failure to create socket, connect socket, write to the
socket, or timeout on reading. If another substring follows, expand and
use it. Otherwise, those conditions give expand errors. */
- SOCK_FAIL:
+ SOCK_FAIL:
if (*s != '{') goto EXPAND_FAILED;
DEBUG(D_any) debug_printf("%s\n", expand_string_message);
- arg = expand_string_internal(s+1, TRUE, &s, FALSE, TRUE, &resetok);
- if (arg == NULL) goto EXPAND_FAILED;
- yield = string_cat(yield, &size, &ptr, arg, Ustrlen(arg));
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
- while (isspace(*s)) s++;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
- continue;
+ if (!(arg = expand_string_internal(s+1, TRUE, &s, FALSE, TRUE, &resetok)))
+ goto EXPAND_FAILED;
+ yield = string_cat(yield, arg);
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing failstring for readsocket";
+ goto EXPAND_FAILED_CURLY;
+ }
+ Uskip_whitespace(&s);
+ goto READSOCK_DONE;
}
/* Handle "run" to execute a program. */
const uschar **argv;
pid_t pid;
int fd_in, fd_out;
- int lsize = 0;
- int lptr = 0;
if ((expand_forbid & RDO_RUN) != 0)
{
goto EXPAND_FAILED;
}
- while (isspace(*s)) s++;
- if (*s != '{') goto EXPAND_FAILED_CURLY;
- arg = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
- if (arg == NULL) goto EXPAND_FAILED;
- while (isspace(*s)) s++;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ Uskip_whitespace(&s);
+ if (*s != '{')
+ {
+ expand_string_message = US"missing '{' for command arg of run";
+ goto EXPAND_FAILED_CURLY;
+ }
+ if (!(arg = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok)))
+ goto EXPAND_FAILED;
+ Uskip_whitespace(&s);
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing command arg of run";
+ goto EXPAND_FAILED_CURLY;
+ }
if (skipping) /* Just pretend it worked when we're skipping */
- {
+ {
runrc = 0;
- }
+ lookup_value = NULL;
+ }
else
{
if (!transport_set_up_command(&argv, /* anchor for arg list */
NULL, /* no transporting address */
US"${run} expansion", /* for error messages */
&expand_string_message)) /* where to put error message */
- {
goto EXPAND_FAILED;
- }
/* Create the child process, making it a group leader. */
- pid = child_open(USS argv, NULL, 0077, &fd_in, &fd_out, TRUE);
-
- if (pid < 0)
+ if ((pid = child_open(USS argv, NULL, 0077, &fd_in, &fd_out, TRUE,
+ US"expand-run")) < 0)
{
expand_string_message =
string_sprintf("couldn't create child process: %s", strerror(errno));
/* Read the pipe to get the command's output into $value (which is kept
in lookup_value). Read during execution, so that if the output exceeds
- the OS pipe buffer limit, we don't block forever. */
+ the OS pipe buffer limit, we don't block forever. Remember to not release
+ memory just allocated for $value. */
+ resetok = FALSE;
f = fdopen(fd_out, "rb");
sigalrm_seen = FALSE;
- alarm(60);
- lookup_value = cat_file(f, lookup_value, &lsize, &lptr, NULL);
- alarm(0);
+ ALARM(60);
+ lookup_value = string_from_gstring(cat_file(f, NULL, NULL));
+ ALARM_CLR(0);
(void)fclose(f);
/* Wait for the process to finish, applying the timeout, and inspect its
return code for serious disasters. Simple non-zero returns are passed on.
*/
- if (sigalrm_seen == TRUE || (runrc = child_close(pid, 30)) < 0)
+ if (sigalrm_seen || (runrc = child_close(pid, 30)) < 0)
{
- if (sigalrm_seen == TRUE || runrc == -256)
+ if (sigalrm_seen || runrc == -256)
{
- expand_string_message = string_sprintf("command timed out");
+ expand_string_message = US"command timed out";
killpg(pid, SIGKILL); /* Kill the whole process group */
}
lookup_value, /* value to reset for string2 */
&s, /* input pointer */
&yield, /* output pointer */
- &size, /* output size */
- &ptr, /* output current point */
US"run", /* condition type */
&resetok))
{
case EITEM_TR:
{
- int oldptr = ptr;
+ int oldptr = gstring_length(yield);
int o2m;
uschar *sub[3];
- switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"tr", &resetok))
+ switch(read_subs(sub, 3, 3, &s, skipping, TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, sub[0], Ustrlen(sub[0]));
+ yield = string_cat(yield, sub[0]);
o2m = Ustrlen(sub[2]) - 1;
- if (o2m >= 0) for (; oldptr < ptr; oldptr++)
+ if (o2m >= 0) for (; oldptr < yield->ptr; oldptr++)
{
- uschar *m = Ustrrchr(sub[1], yield[oldptr]);
- if (m != NULL)
+ uschar *m = Ustrrchr(sub[1], yield->s[oldptr]);
+ if (m)
{
int o = m - sub[1];
- yield[oldptr] = sub[2][(o < o2m)? o : o2m];
+ yield->s[oldptr] = sub[2][(o < o2m)? o : o2m];
}
}
case EITEM_NHASH:
case EITEM_SUBSTR:
{
- int i;
int len;
uschar *ret;
int val[2] = { 0, -1 };
string to the last position and make ${length{n}{str}} equivalent to
${substr{0}{n}{str}}. See the defaults for val[] above. */
- if (sub[2] == NULL)
+ if (!sub[2])
{
sub[2] = sub[1];
sub[1] = NULL;
}
}
- for (i = 0; i < 2; i++)
+ for (int i = 0; i < 2; i++) if (sub[i])
{
- if (sub[i] == NULL) continue;
val[i] = (int)Ustrtol(sub[i], &ret, 10);
if (*ret != 0 || (i != 0 && val[i] < 0))
{
}
ret =
- (item_type == EITEM_HASH)?
- compute_hash(sub[2], val[0], val[1], &len) :
- (item_type == EITEM_NHASH)?
- compute_nhash(sub[2], val[0], val[1], &len) :
- extract_substr(sub[2], val[0], val[1], &len);
-
- if (ret == NULL) goto EXPAND_FAILED;
- yield = string_cat(yield, &size, &ptr, ret, len);
+ item_type == EITEM_HASH
+ ? compute_hash(sub[2], val[0], val[1], &len)
+ : item_type == EITEM_NHASH
+ ? compute_nhash(sub[2], val[0], val[1], &len)
+ : extract_substr(sub[2], val[0], val[1], &len);
+ if (!ret)
+ goto EXPAND_FAILED;
+ yield = string_catn(yield, ret, len);
continue;
}
{
uschar *sub[3];
md5 md5_base;
- sha1 sha1_base;
+ hctx sha1_ctx;
void *use_base;
- int type, i;
+ int type;
int hashlen; /* Number of octets for the hash algorithm's output */
int hashblocklen; /* Number of octets the hash algorithm processes */
uschar *keyptr, *p;
case 3: goto EXPAND_FAILED;
}
- if (Ustrcmp(sub[0], "md5") == 0)
- {
- type = HMAC_MD5;
- use_base = &md5_base;
- hashlen = 16;
- hashblocklen = 64;
- }
- else if (Ustrcmp(sub[0], "sha1") == 0)
- {
- type = HMAC_SHA1;
- use_base = &sha1_base;
- hashlen = 20;
- hashblocklen = 64;
- }
- else
- {
- expand_string_message =
- string_sprintf("hmac algorithm \"%s\" is not recognised", sub[0]);
- goto EXPAND_FAILED;
- }
+ if (!skipping)
+ {
+ if (Ustrcmp(sub[0], "md5") == 0)
+ {
+ type = HMAC_MD5;
+ use_base = &md5_base;
+ hashlen = 16;
+ hashblocklen = 64;
+ }
+ else if (Ustrcmp(sub[0], "sha1") == 0)
+ {
+ type = HMAC_SHA1;
+ use_base = &sha1_ctx;
+ hashlen = 20;
+ hashblocklen = 64;
+ }
+ else
+ {
+ expand_string_message =
+ string_sprintf("hmac algorithm \"%s\" is not recognised", sub[0]);
+ goto EXPAND_FAILED;
+ }
- keyptr = sub[1];
- keylen = Ustrlen(keyptr);
+ keyptr = sub[1];
+ keylen = Ustrlen(keyptr);
- /* If the key is longer than the hash block length, then hash the key
- first */
+ /* If the key is longer than the hash block length, then hash the key
+ first */
- if (keylen > hashblocklen)
- {
- chash_start(type, use_base);
- chash_end(type, use_base, keyptr, keylen, keyhash);
- keyptr = keyhash;
- keylen = hashlen;
- }
+ if (keylen > hashblocklen)
+ {
+ chash_start(type, use_base);
+ chash_end(type, use_base, keyptr, keylen, keyhash);
+ keyptr = keyhash;
+ keylen = hashlen;
+ }
- /* Now make the inner and outer key values */
+ /* Now make the inner and outer key values */
- memset(innerkey, 0x36, hashblocklen);
- memset(outerkey, 0x5c, hashblocklen);
+ memset(innerkey, 0x36, hashblocklen);
+ memset(outerkey, 0x5c, hashblocklen);
- for (i = 0; i < keylen; i++)
- {
- innerkey[i] ^= keyptr[i];
- outerkey[i] ^= keyptr[i];
- }
+ for (int i = 0; i < keylen; i++)
+ {
+ innerkey[i] ^= keyptr[i];
+ outerkey[i] ^= keyptr[i];
+ }
- /* Now do the hashes */
+ /* Now do the hashes */
- chash_start(type, use_base);
- chash_mid(type, use_base, innerkey);
- chash_end(type, use_base, sub[2], Ustrlen(sub[2]), innerhash);
+ chash_start(type, use_base);
+ chash_mid(type, use_base, innerkey);
+ chash_end(type, use_base, sub[2], Ustrlen(sub[2]), innerhash);
- chash_start(type, use_base);
- chash_mid(type, use_base, outerkey);
- chash_end(type, use_base, innerhash, hashlen, finalhash);
+ chash_start(type, use_base);
+ chash_mid(type, use_base, outerkey);
+ chash_end(type, use_base, innerhash, hashlen, finalhash);
- /* Encode the final hash as a hex string */
+ /* Encode the final hash as a hex string */
- p = finalhash_hex;
- for (i = 0; i < hashlen; i++)
- {
- *p++ = hex_digits[(finalhash[i] & 0xf0) >> 4];
- *p++ = hex_digits[finalhash[i] & 0x0f];
- }
+ p = finalhash_hex;
+ for (int i = 0; i < hashlen; i++)
+ {
+ *p++ = hex_digits[(finalhash[i] & 0xf0) >> 4];
+ *p++ = hex_digits[finalhash[i] & 0x0f];
+ }
- DEBUG(D_any) debug_printf("HMAC[%s](%.*s,%.*s)=%.*s\n", sub[0],
- (int)keylen, keyptr, Ustrlen(sub[2]), sub[2], hashlen*2, finalhash_hex);
+ DEBUG(D_any) debug_printf("HMAC[%s](%.*s,%s)=%.*s\n",
+ sub[0], (int)keylen, keyptr, sub[2], hashlen*2, finalhash_hex);
- yield = string_cat(yield, &size, &ptr, finalhash_hex, hashlen*2);
+ yield = string_catn(yield, finalhash_hex, hashlen*2);
+ }
+ continue;
}
- continue;
-
/* Handle global substitution for "sg" - like Perl's s/xxx/yyy/g operator.
We have to save the numerical variables and restore them afterwards. */
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
- switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"sg", &resetok))
+ switch(read_subs(sub, 3, 3, &s, skipping, TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
/* Compile the regular expression */
- re = pcre_compile(CS sub[1], PCRE_COPT, (const char **)&rerror, &roffset,
- NULL);
-
- if (re == NULL)
+ if (!(re = pcre_compile(CS sub[1], PCRE_COPT, CCSS &rerror,
+ &roffset, NULL)))
{
expand_string_message = string_sprintf("regular expression error in "
"\"%s\": %s at offset %d", sub[1], rerror, roffset);
int ovector[3*(EXPAND_MAXN+1)];
int n = pcre_exec(re, NULL, CS subject, slen, moffset + moffsetextra,
PCRE_EOPT | emptyopt, ovector, nelem(ovector));
- int nn;
uschar *insert;
/* No match - if we previously set PCRE_NOTEMPTY after a null match, this
emptyopt = 0;
continue;
}
- yield = string_cat(yield, &size, &ptr, subject+moffset, slen-moffset);
+ yield = string_catn(yield, subject+moffset, slen-moffset);
break;
}
if (n == 0) n = EXPAND_MAXN + 1;
expand_nmax = 0;
- for (nn = 0; nn < n*2; nn += 2)
+ for (int nn = 0; nn < n*2; nn += 2)
{
expand_nstring[expand_nmax] = subject + ovector[nn];
expand_nlength[expand_nmax++] = ovector[nn+1] - ovector[nn];
/* Copy the characters before the match, plus the expanded insertion. */
- yield = string_cat(yield, &size, &ptr, subject + moffset,
- ovector[0] - moffset);
- insert = expand_string(sub[2]);
- if (insert == NULL) goto EXPAND_FAILED;
- yield = string_cat(yield, &size, &ptr, insert, Ustrlen(insert));
+ yield = string_catn(yield, subject + moffset, ovector[0] - moffset);
+ if (!(insert = expand_string(sub[2])))
+ goto EXPAND_FAILED;
+ yield = string_cat(yield, insert);
moffset = ovector[1];
moffsetextra = 0;
case EITEM_EXTRACT:
{
- int i;
- int j = 2;
int field_number = 1;
BOOL field_number_set = FALSE;
uschar *save_lookup_value = lookup_value;
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
- /* Read the arguments */
+ /* On reflection the original behaviour of extract-json for a string
+ result, leaving it quoted, was a mistake. But it was already published,
+ hence the addition of jsons. In a future major version, make json
+ work like josons, and withdraw jsons. */
+
+ enum {extract_basic, extract_json, extract_jsons} fmt = extract_basic;
- for (i = 0; i < j; i++)
+ /* Check for a format-variant specifier */
+
+ if (Uskip_whitespace(&s) != '{') /*}*/
+ if (Ustrncmp(s, "json", 4) == 0)
+ if (*(s += 4) == 's')
+ {fmt = extract_jsons; s++;}
+ else
+ fmt = extract_json;
+
+ /* While skipping we cannot rely on the data for expansions being
+ available (eg. $item) hence cannot decide on numeric vs. keyed.
+ Read a maximum of 5 arguments (including the yes/no) */
+
+ if (skipping)
+ {
+ for (int j = 5; j > 0 && *s == '{'; j--) /*'}'*/
+ {
+ if (!expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok))
+ goto EXPAND_FAILED; /*'{'*/
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '{' for arg of extract";
+ goto EXPAND_FAILED_CURLY;
+ }
+ Uskip_whitespace(&s);
+ }
+ if ( Ustrncmp(s, "fail", 4) == 0 /*'{'*/
+ && (s[4] == '}' || s[4] == ' ' || s[4] == '\t' || !s[4])
+ )
+ {
+ s += 4;
+ Uskip_whitespace(&s);
+ } /*'{'*/
+ if (*s != '}')
+ {
+ expand_string_message = US"missing '}' closing extract";
+ goto EXPAND_FAILED_CURLY;
+ }
+ }
+
+ else for (int i = 0, j = 2; i < j; i++) /* Read the proper number of arguments */
{
- while (isspace(*s)) s++;
- if (*s == '{') /*}*/
+ if (Uskip_whitespace(&s) == '{') /*'}'*/
{
- sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
- if (sub[i] == NULL) goto EXPAND_FAILED; /*{*/
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (!(sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok)))
+ goto EXPAND_FAILED; /*'{'*/
+ if (*s++ != '}')
+ {
+ expand_string_message = string_sprintf(
+ "missing '}' closing arg %d of extract", i+1);
+ goto EXPAND_FAILED_CURLY;
+ }
/* After removal of leading and trailing white space, the first
argument must not be empty; if it consists entirely of digits
(optionally preceded by a minus sign), this is a numerical
- extraction, and we expect 3 arguments. */
+ extraction, and we expect 3 arguments (normal) or 2 (json). */
if (i == 0)
{
int x = 0;
uschar *p = sub[0];
- while (isspace(*p)) p++;
+ Uskip_whitespace(&p);
sub[0] = p;
len = Ustrlen(p);
while (len > 0 && isspace(p[len-1])) len--;
p[len] = 0;
- if (!skipping)
+ if (*p == 0)
{
- if (*p == 0)
- {
- expand_string_message = US"first argument of \"extract\" must "
- "not be empty";
- goto EXPAND_FAILED;
- }
+ expand_string_message = US"first argument of \"extract\" must "
+ "not be empty";
+ goto EXPAND_FAILED;
+ }
- if (*p == '-')
- {
- field_number = -1;
- p++;
- }
- while (*p != 0 && isdigit(*p)) x = x * 10 + *p++ - '0';
- if (*p == 0)
- {
- field_number *= x;
- j = 3; /* Need 3 args */
- field_number_set = TRUE;
- }
+ if (*p == '-')
+ {
+ field_number = -1;
+ p++;
+ }
+ while (*p != 0 && isdigit(*p)) x = x * 10 + *p++ - '0';
+ if (*p == 0)
+ {
+ field_number *= x;
+ if (fmt == extract_basic) j = 3; /* Need 3 args */
+ field_number_set = TRUE;
}
}
}
- else goto EXPAND_FAILED_CURLY;
+ else
+ {
+ expand_string_message = string_sprintf(
+ "missing '{' for arg %d of extract", i+1);
+ goto EXPAND_FAILED_CURLY;
+ }
}
/* Extract either the numbered or the keyed substring into $value. If
skipping, just pretend the extraction failed. */
- lookup_value = skipping? NULL : field_number_set?
- expand_gettokened(field_number, sub[1], sub[2]) :
- expand_getkeyed(sub[0], sub[1]);
+ if (skipping)
+ lookup_value = NULL;
+ else switch (fmt)
+ {
+ case extract_basic:
+ lookup_value = field_number_set
+ ? expand_gettokened(field_number, sub[1], sub[2])
+ : expand_getkeyed(sub[0], sub[1]);
+ break;
+
+ case extract_json:
+ case extract_jsons:
+ {
+ uschar * s, * item;
+ const uschar * list;
+
+ /* Array: Bracket-enclosed and comma-separated.
+ Object: Brace-enclosed, comma-sep list of name:value pairs */
+
+ if (!(s = dewrap(sub[1], field_number_set ? US"[]" : US"{}")))
+ {
+ expand_string_message =
+ string_sprintf("%s wrapping %s for extract json",
+ expand_string_message,
+ field_number_set ? "array" : "object");
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ list = s;
+ if (field_number_set)
+ {
+ if (field_number <= 0)
+ {
+ expand_string_message = US"first argument of \"extract\" must "
+ "be greater than zero";
+ goto EXPAND_FAILED;
+ }
+ while (field_number > 0 && (item = json_nextinlist(&list)))
+ field_number--;
+ if ((lookup_value = s = item))
+ {
+ while (*s) s++;
+ while (--s >= lookup_value && isspace(*s)) *s = '\0';
+ }
+ }
+ else
+ {
+ lookup_value = NULL;
+ while ((item = json_nextinlist(&list)))
+ {
+ /* Item is: string name-sep value. string is quoted.
+ Dequote the string and compare with the search key. */
+
+ if (!(item = dewrap(item, US"\"\"")))
+ {
+ expand_string_message =
+ string_sprintf("%s wrapping string key for extract json",
+ expand_string_message);
+ goto EXPAND_FAILED_CURLY;
+ }
+ if (Ustrcmp(item, sub[0]) == 0) /*XXX should be a UTF8-compare */
+ {
+ s = item + Ustrlen(item) + 1;
+ if (Uskip_whitespace(&s) != ':')
+ {
+ expand_string_message =
+ US"missing object value-separator for extract json";
+ goto EXPAND_FAILED_CURLY;
+ }
+ s++;
+ Uskip_whitespace(&s);
+ lookup_value = s;
+ break;
+ }
+ }
+ }
+ }
+
+ if ( fmt == extract_jsons
+ && lookup_value
+ && !(lookup_value = dewrap(lookup_value, US"\"\"")))
+ {
+ expand_string_message =
+ string_sprintf("%s wrapping string result for extract jsons",
+ expand_string_message);
+ goto EXPAND_FAILED_CURLY;
+ }
+ break; /* json/s */
+ }
/* If no string follows, $value gets substituted; otherwise there can
be yes/no strings, as for lookup or if. */
save_lookup_value, /* value to reset for string2 */
&s, /* input pointer */
&yield, /* output pointer */
- &size, /* output size */
- &ptr, /* output current point */
US"extract", /* condition type */
&resetok))
{
case EITEM_LISTEXTRACT:
{
- int i;
int field_number = 1;
uschar *save_lookup_value = lookup_value;
uschar *sub[2];
/* Read the field & list arguments */
- for (i = 0; i < 2; i++)
+ for (int i = 0; i < 2; i++)
{
- while (isspace(*s)) s++;
- if (*s != '{') /*}*/
+ if (Uskip_whitespace(&s) != '{') /*'}'*/
+ {
+ expand_string_message = string_sprintf(
+ "missing '{' for arg %d of listextract", i+1);
goto EXPAND_FAILED_CURLY;
+ }
sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
if (!sub[i]) goto EXPAND_FAILED; /*{*/
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = string_sprintf(
+ "missing '}' closing arg %d of listextract", i+1);
+ goto EXPAND_FAILED_CURLY;
+ }
/* After removal of leading and trailing white space, the first
argument must be numeric and nonempty. */
int x = 0;
uschar *p = sub[0];
- while (isspace(*p)) p++;
+ Uskip_whitespace(&p);
sub[0] = p;
len = Ustrlen(p);
/* Extract the numbered element into $value. If
skipping, just pretend the extraction failed. */
- lookup_value = skipping? NULL : expand_getlistele(field_number, sub[1]);
+ lookup_value = skipping ? NULL : expand_getlistele(field_number, sub[1]);
/* If no string follows, $value gets substituted; otherwise there can
be yes/no strings, as for lookup or if. */
save_lookup_value, /* value to reset for string2 */
&s, /* input pointer */
&yield, /* output pointer */
- &size, /* output size */
- &ptr, /* output current point */
- US"extract", /* condition type */
+ US"listextract", /* condition type */
&resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
continue;
}
-#ifdef SUPPORT_TLS
+ case EITEM_LISTQUOTE:
+ {
+ uschar * sub[2];
+ switch(read_subs(sub, 2, 2, &s, skipping, TRUE, name, &resetok))
+ {
+ case 1: goto EXPAND_FAILED_CURLY;
+ case 2:
+ case 3: goto EXPAND_FAILED;
+ }
+ for (uschar sep = *sub[0], c; c = *sub[1]; sub[1]++)
+ {
+ if (c == sep) yield = string_catn(yield, sub[1], 1);
+ yield = string_catn(yield, sub[1], 1);
+ }
+ continue;
+ }
+
+#ifndef DISABLE_TLS
case EITEM_CERTEXTRACT:
{
uschar *save_lookup_value = lookup_value;
save_expand_strings(save_expand_nstring, save_expand_nlength);
/* Read the field argument */
- while (isspace(*s)) s++;
- if (*s != '{') /*}*/
+ if (Uskip_whitespace(&s) != '{') /*}*/
+ {
+ expand_string_message = US"missing '{' for field arg of certextract";
goto EXPAND_FAILED_CURLY;
+ }
sub[0] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
if (!sub[0]) goto EXPAND_FAILED; /*{*/
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing field arg of certextract";
+ goto EXPAND_FAILED_CURLY;
+ }
/* strip spaces fore & aft */
{
int len;
uschar *p = sub[0];
- while (isspace(*p)) p++;
+ Uskip_whitespace(&p);
sub[0] = p;
len = Ustrlen(p);
}
/* inspect the cert argument */
- while (isspace(*s)) s++;
- if (*s != '{') /*}*/
+ if (Uskip_whitespace(&s) != '{') /*}*/
+ {
+ expand_string_message = US"missing '{' for cert variable arg of certextract";
goto EXPAND_FAILED_CURLY;
+ }
if (*++s != '$')
{
expand_string_message = US"second argument of \"certextract\" must "
}
sub[1] = expand_string_internal(s+1, TRUE, &s, skipping, FALSE, &resetok);
if (!sub[1]) goto EXPAND_FAILED; /*{*/
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing cert variable arg of certextract";
+ goto EXPAND_FAILED_CURLY;
+ }
if (skipping)
lookup_value = NULL;
save_lookup_value, /* value to reset for string2 */
&s, /* input pointer */
&yield, /* output pointer */
- &size, /* output size */
- &ptr, /* output current point */
- US"extract", /* condition type */
+ US"certextract", /* condition type */
&resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
save_expand_nlength);
continue;
}
-#endif /*SUPPORT_TLS*/
+#endif /*DISABLE_TLS*/
/* Handle list operations */
case EITEM_REDUCE:
{
int sep = 0;
- int save_ptr = ptr;
+ int save_ptr = gstring_length(yield);
uschar outsep[2] = { '\0', '\0' };
const uschar *list, *expr, *temp;
uschar *save_iterate_item = iterate_item;
uschar *save_lookup_value = lookup_value;
- while (isspace(*s)) s++;
- if (*s++ != '{') goto EXPAND_FAILED_CURLY;
+ Uskip_whitespace(&s);
+ if (*s++ != '{')
+ {
+ expand_string_message =
+ string_sprintf("missing '{' for first arg of %s", name);
+ goto EXPAND_FAILED_CURLY;
+ }
- list = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok);
- if (list == NULL) goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (!(list = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok)))
+ goto EXPAND_FAILED;
+ if (*s++ != '}')
+ {
+ expand_string_message =
+ string_sprintf("missing '}' closing first arg of %s", name);
+ goto EXPAND_FAILED_CURLY;
+ }
if (item_type == EITEM_REDUCE)
{
uschar * t;
- while (isspace(*s)) s++;
- if (*s++ != '{') goto EXPAND_FAILED_CURLY;
+ Uskip_whitespace(&s);
+ if (*s++ != '{')
+ {
+ expand_string_message = US"missing '{' for second arg of reduce";
+ goto EXPAND_FAILED_CURLY;
+ }
t = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok);
if (!t) goto EXPAND_FAILED;
lookup_value = t;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing second arg of reduce";
+ goto EXPAND_FAILED_CURLY;
+ }
}
- while (isspace(*s)) s++;
- if (*s++ != '{') goto EXPAND_FAILED_CURLY;
+ Uskip_whitespace(&s);
+ if (*s++ != '{')
+ {
+ expand_string_message =
+ string_sprintf("missing '{' for last arg of %s", name);
+ goto EXPAND_FAILED_CURLY;
+ }
expr = s;
if (item_type == EITEM_FILTER)
{
- temp = eval_condition(expr, &resetok, NULL);
- if (temp != NULL) s = temp;
+ if ((temp = eval_condition(expr, &resetok, NULL)))
+ s = temp;
}
else
temp = expand_string_internal(s, TRUE, &s, TRUE, TRUE, &resetok);
- if (temp == NULL)
+ if (!temp)
{
expand_string_message = string_sprintf("%s inside \"%s\" item",
expand_string_message, name);
goto EXPAND_FAILED;
}
- while (isspace(*s)) s++;
+ Uskip_whitespace(&s);
if (*s++ != '}')
{ /*{*/
expand_string_message = string_sprintf("missing } at end of condition "
- "or expression inside \"%s\"", name);
+ "or expression inside \"%s\"; could be an unquoted } in the content",
+ name);
goto EXPAND_FAILED;
}
- while (isspace(*s)) s++; /*{*/
+ Uskip_whitespace(&s); /*{*/
if (*s++ != '}')
{ /*{*/
expand_string_message = string_sprintf("missing } at end of \"%s\"",
processing for real, we perform the iteration. */
if (skipping) continue;
- while ((iterate_item = string_nextinlist(&list, &sep, NULL, 0)) != NULL)
+ while ((iterate_item = string_nextinlist(&list, &sep, NULL, 0)))
{
*outsep = (uschar)sep; /* Separator as a string */
- DEBUG(D_expand) debug_printf("%s: $item = \"%s\"\n", name, iterate_item);
+ DEBUG(D_expand) debug_printf_indent("%s: $item = '%s' $value = '%s'\n",
+ name, iterate_item, lookup_value);
if (item_type == EITEM_FILTER)
{
BOOL condresult;
- if (eval_condition(expr, &resetok, &condresult) == NULL)
+ if (!eval_condition(expr, &resetok, &condresult))
{
iterate_item = save_iterate_item;
lookup_value = save_lookup_value;
expand_string_message, name);
goto EXPAND_FAILED;
}
- DEBUG(D_expand) debug_printf("%s: condition is %s\n", name,
+ DEBUG(D_expand) debug_printf_indent("%s: condition is %s\n", name,
condresult? "true":"false");
if (condresult)
temp = iterate_item; /* TRUE => include this item */
{
uschar * t = expand_string_internal(expr, TRUE, NULL, skipping, TRUE, &resetok);
temp = t;
- if (temp == NULL)
+ if (!temp)
{
iterate_item = save_iterate_item;
expand_string_message = string_sprintf("%s inside \"%s\" item",
item of the output list, add in a space if the new item begins with the
separator character, or is an empty string. */
- if (ptr != save_ptr && (temp[0] == *outsep || temp[0] == 0))
- yield = string_cat(yield, &size, &ptr, US" ", 1);
+ if ( yield && yield->ptr != save_ptr
+ && (temp[0] == *outsep || temp[0] == 0))
+ yield = string_catn(yield, US" ", 1);
/* Add the string in "temp" to the output list that we are building,
This is done in chunks by searching for the separator character. */
for (;;)
{
size_t seglen = Ustrcspn(temp, outsep);
- yield = string_cat(yield, &size, &ptr, temp, seglen + 1);
+
+ yield = string_catn(yield, temp, seglen + 1);
/* If we got to the end of the string we output one character
too many; backup and end the loop. Otherwise arrange to double the
separator. */
- if (temp[seglen] == '\0') { ptr--; break; }
- yield = string_cat(yield, &size, &ptr, outsep, 1);
+ if (temp[seglen] == '\0') { yield->ptr--; break; }
+ yield = string_catn(yield, outsep, 1);
temp += seglen + 1;
}
/* Output a separator after the string: we will remove the redundant
final one at the end. */
- yield = string_cat(yield, &size, &ptr, outsep, 1);
+ yield = string_catn(yield, outsep, 1);
} /* End of iteration over the list loop */
/* REDUCE has generated no output above: output the final value of
if (item_type == EITEM_REDUCE)
{
- yield = string_cat(yield, &size, &ptr, lookup_value,
- Ustrlen(lookup_value));
+ yield = string_cat(yield, lookup_value);
lookup_value = save_lookup_value; /* Restore $value */
}
the redundant final separator. Even though an empty item at the end of a
list does not count, this is tidier. */
- else if (ptr != save_ptr) ptr--;
+ else if (yield && yield->ptr != save_ptr) yield->ptr--;
/* Restore preserved $item */
case EITEM_SORT:
{
+ int cond_type;
int sep = 0;
const uschar *srclist, *cmp, *xtract;
- uschar *srcitem;
+ uschar * opname, * srcitem;
const uschar *dstlist = NULL, *dstkeylist = NULL;
uschar * tmp;
uschar *save_iterate_item = iterate_item;
- while (isspace(*s)) s++;
- if (*s++ != '{') goto EXPAND_FAILED_CURLY;
+ Uskip_whitespace(&s);
+ if (*s++ != '{')
+ {
+ expand_string_message = US"missing '{' for list arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
srclist = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok);
if (!srclist) goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing list arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
- while (isspace(*s)) s++;
- if (*s++ != '{') goto EXPAND_FAILED_CURLY;
+ Uskip_whitespace(&s);
+ if (*s++ != '{')
+ {
+ expand_string_message = US"missing '{' for comparator arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
cmp = expand_string_internal(s, TRUE, &s, skipping, FALSE, &resetok);
if (!cmp) goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing comparator arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ if ((cond_type = identify_operator(&cmp, &opname)) == -1)
+ {
+ if (!expand_string_message)
+ expand_string_message = string_sprintf("unknown condition \"%s\"", s);
+ goto EXPAND_FAILED;
+ }
+ switch(cond_type)
+ {
+ case ECOND_NUM_L: case ECOND_NUM_LE:
+ case ECOND_NUM_G: case ECOND_NUM_GE:
+ case ECOND_STR_GE: case ECOND_STR_GEI: case ECOND_STR_GT: case ECOND_STR_GTI:
+ case ECOND_STR_LE: case ECOND_STR_LEI: case ECOND_STR_LT: case ECOND_STR_LTI:
+ break;
+
+ default:
+ expand_string_message = US"comparator not handled for sort";
+ goto EXPAND_FAILED;
+ }
- while (isspace(*s)) s++;
- if (*s++ != '{') goto EXPAND_FAILED_CURLY;
+ Uskip_whitespace(&s);
+ if (*s++ != '{')
+ {
+ expand_string_message = US"missing '{' for extractor arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
xtract = s;
- tmp = expand_string_internal(s, TRUE, &s, TRUE, TRUE, &resetok);
- if (!tmp) goto EXPAND_FAILED;
+ if (!(tmp = expand_string_internal(s, TRUE, &s, TRUE, TRUE, &resetok)))
+ goto EXPAND_FAILED;
xtract = string_copyn(xtract, s - xtract);
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing extractor arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
/*{*/
if (*s++ != '}')
{ /*{*/
if (skipping) continue;
while ((srcitem = string_nextinlist(&srclist, &sep, NULL, 0)))
- {
- uschar * dstitem;
- uschar * newlist = NULL;
- uschar * newkeylist = NULL;
- uschar * srcfield;
+ {
+ uschar * srcfield, * dstitem;
+ gstring * newlist = NULL;
+ gstring * newkeylist = NULL;
- DEBUG(D_expand) debug_printf("%s: $item = \"%s\"\n", name, srcitem);
+ DEBUG(D_expand) debug_printf_indent("%s: $item = \"%s\"\n", name, srcitem);
/* extract field for comparisons */
iterate_item = srcitem;
while ((dstitem = string_nextinlist(&dstlist, &sep, NULL, 0)))
{
uschar * dstfield;
- uschar * expr;
- BOOL before;
/* field for comparison */
if (!(dstfield = string_nextinlist(&dstkeylist, &sep, NULL, 0)))
goto sort_mismatch;
- /* build and run condition string */
- expr = string_sprintf("%s{%s}{%s}", cmp, srcfield, dstfield);
-
- DEBUG(D_expand) debug_printf("%s: cond = \"%s\"\n", name, expr);
- if (!eval_condition(expr, &resetok, &before))
- {
- expand_string_message = string_sprintf("comparison in sort: %s",
- expr);
- goto EXPAND_FAILED;
- }
+ /* String-comparator names start with a letter; numeric names do not */
- if (before)
+ if (sortsbefore(cond_type, isalpha(opname[0]),
+ srcfield, dstfield))
{
/* New-item sorts before this dst-item. Append new-item,
then dst-item, then remainder of dst list. */
newlist = string_append_listele(newlist, sep, dstitem);
newkeylist = string_append_listele(newkeylist, sep, dstfield);
+/*XXX why field-at-a-time copy? Why not just dup the rest of the list? */
while ((dstitem = string_nextinlist(&dstlist, &sep, NULL, 0)))
{
if (!(dstfield = string_nextinlist(&dstkeylist, &sep, NULL, 0)))
newkeylist = string_append_listele(newkeylist, sep, srcfield);
}
- dstlist = newlist;
- dstkeylist = newkeylist;
+ dstlist = newlist->s;
+ dstkeylist = newkeylist->s;
- DEBUG(D_expand) debug_printf("%s: dstlist = \"%s\"\n", name, dstlist);
- DEBUG(D_expand) debug_printf("%s: dstkeylist = \"%s\"\n", name, dstkeylist);
+ DEBUG(D_expand) debug_printf_indent("%s: dstlist = \"%s\"\n", name, dstlist);
+ DEBUG(D_expand) debug_printf_indent("%s: dstkeylist = \"%s\"\n", name, dstkeylist);
}
if (dstlist)
- yield = string_cat(yield, &size, &ptr, dstlist, Ustrlen(dstlist));
+ yield = string_cat(yield, dstlist);
/* Restore preserved $item */
iterate_item = save_iterate_item;
}
switch(read_subs(argv, EXPAND_DLFUNC_MAX_ARGS + 2, 2, &s, skipping,
- TRUE, US"dlfunc", &resetok))
+ TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
/* Look up the dynamically loaded object handle in the tree. If it isn't
found, dlopen() the file and put the handle in the tree for next time. */
- t = tree_search(dlobj_anchor, argv[0]);
- if (t == NULL)
+ if (!(t = tree_search(dlobj_anchor, argv[0])))
{
void *handle = dlopen(CS argv[0], RTLD_LAZY);
- if (handle == NULL)
+ if (!handle)
{
expand_string_message = string_sprintf("dlopen \"%s\" failed: %s",
argv[0], dlerror());
log_write(0, LOG_MAIN|LOG_PANIC, "%s", expand_string_message);
goto EXPAND_FAILED;
}
- t = store_get_perm(sizeof(tree_node) + Ustrlen(argv[0]));
+ t = store_get_perm(sizeof(tree_node) + Ustrlen(argv[0]), is_tainted(argv[0]));
Ustrcpy(t->name, argv[0]);
t->data.ptr = handle;
(void)tree_insertnode(&dlobj_anchor, t);
/* Having obtained the dynamically loaded object handle, look up the
function pointer. */
- func = (exim_dlfunc_t *)dlsym(t->data.ptr, CS argv[1]);
- if (func == NULL)
+ if (!(func = (exim_dlfunc_t *)dlsym(t->data.ptr, CS argv[1])))
{
expand_string_message = string_sprintf("dlsym \"%s\" in \"%s\" failed: "
"%s", argv[1], argv[0], dlerror());
resetok = FALSE;
result = NULL;
- for (argc = 0; argv[argc] != NULL; argc++);
+ for (argc = 0; argv[argc]; argc++);
status = func(&result, argc - 2, &argv[2]);
if(status == OK)
{
- if (result == NULL) result = US"";
- yield = string_cat(yield, &size, &ptr, result, Ustrlen(result));
+ if (!result) result = US"";
+ yield = string_cat(yield, result);
continue;
}
else
{
- expand_string_message = result == NULL ? US"(no message)" : result;
- if(status == FAIL_FORCED) expand_string_forcedfail = TRUE;
- else if(status != FAIL)
- log_write(0, LOG_MAIN|LOG_PANIC, "dlfunc{%s}{%s} failed (%d): %s",
+ expand_string_message = result ? result : US"(no message)";
+ if (status == FAIL_FORCED)
+ f.expand_string_forcedfail = TRUE;
+ else if (status != FAIL)
+ log_write(0, LOG_MAIN|LOG_PANIC, "dlfunc{%s}{%s} failed (%d): %s",
argv[0], argv[1], status, expand_string_message);
goto EXPAND_FAILED;
}
uschar * key;
uschar *save_lookup_value = lookup_value;
- while (isspace(*s)) s++;
- if (*s != '{') /*}*/
+ if (Uskip_whitespace(&s) != '{') /*}*/
goto EXPAND_FAILED;
key = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
if (!key) goto EXPAND_FAILED; /*{*/
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '{' for name arg of env";
+ goto EXPAND_FAILED_CURLY;
+ }
lookup_value = US getenv(CS key);
save_lookup_value, /* value to reset for string2 */
&s, /* input pointer */
&yield, /* output pointer */
- &size, /* output size */
- &ptr, /* output current point */
US"env", /* condition type */
&resetok))
{
}
continue;
}
+
+#ifdef EXPERIMENTAL_SRS_NATIVE
+ case EITEM_SRS_ENCODE:
+ /* ${srs_encode {secret} {return_path} {orig_domain}} */
+ {
+ uschar * sub[3];
+ uschar cksum[4];
+
+ switch (read_subs(sub, 3, 3, CUSS &s, skipping, TRUE, name, &resetok))
+ {
+ case 1: goto EXPAND_FAILED_CURLY;
+ case 2:
+ case 3: goto EXPAND_FAILED;
+ }
+
+ yield = string_catn(yield, US"SRS0=", 5);
+
+ /* ${l_4:${hmac{md5}{SRS_SECRET}{${lc:$return_path}}}}= */
+ hmac_md5(sub[0], string_copylc(sub[1]), cksum, sizeof(cksum));
+ yield = string_catn(yield, cksum, sizeof(cksum));
+ yield = string_catn(yield, US"=", 1);
+
+ /* ${base32:${eval:$tod_epoch/86400&0x3ff}}= */
+ {
+ struct timeval now;
+ unsigned long i;
+ gstring * g = NULL;
+
+ gettimeofday(&now, NULL);
+ for (unsigned long i = (now.tv_sec / 86400) & 0x3ff; i; i >>= 5)
+ g = string_catn(g, &base32_chars[i & 0x1f], 1);
+ if (g) while (g->ptr > 0)
+ yield = string_catn(yield, &g->s[--g->ptr], 1);
+ }
+ yield = string_catn(yield, US"=", 1);
+
+ /* ${domain:$return_path}=${local_part:$return_path} */
+ {
+ int start, end, domain;
+ uschar * t = parse_extract_address(sub[1], &expand_string_message,
+ &start, &end, &domain, FALSE);
+ if (!t)
+ goto EXPAND_FAILED;
+
+ if (domain > 0) yield = string_cat(yield, t + domain);
+ yield = string_catn(yield, US"=", 1);
+ yield = domain > 0
+ ? string_catn(yield, t, domain - 1) : string_cat(yield, t);
+ }
+
+ /* @$original_domain */
+ yield = string_catn(yield, US"@", 1);
+ yield = string_cat(yield, sub[2]);
+ continue;
+ }
+#endif /*EXPERIMENTAL_SRS_NATIVE*/
} /* EITEM_* switch */
/* Control reaches here if the name is not recognized as one of the more
int c;
uschar *arg = NULL;
uschar *sub;
+#ifndef DISABLE_TLS
var_entry *vp = NULL;
+#endif
/* Owing to an historical mis-design, an underscore may be part of the
operator name, or it may introduce arguments. We therefore first scan the
if ((c = chop_match(name, op_table_underscore,
nelem(op_table_underscore))) < 0)
{
- arg = Ustrchr(name, '_');
- if (arg != NULL) *arg = 0;
- c = chop_match(name, op_table_main, nelem(op_table_main));
- if (c >= 0) c += nelem(op_table_underscore);
- if (arg != NULL) *arg++ = '_'; /* Put back for error messages */
+ if ((arg = Ustrchr(name, '_')))
+ *arg = 0;
+ if ((c = chop_match(name, op_table_main, nelem(op_table_main))) >= 0)
+ c += nelem(op_table_underscore);
+ if (arg) *arg++ = '_'; /* Put back for error messages */
}
/* Deal specially with operators that might take a certificate variable
as we do not want to do the usual expansion. For most, expand the string.*/
switch(c)
{
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
case EOP_MD5:
case EOP_SHA1:
case EOP_SHA256:
+ case EOP_BASE64:
if (s[1] == '$')
{
const uschar * s1 = s;
sub = expand_string_internal(s+2, TRUE, &s1, skipping,
FALSE, &resetok);
if (!sub) goto EXPAND_FAILED; /*{*/
- if (*s1 != '}') goto EXPAND_FAILED_CURLY;
+ if (*s1 != '}')
+ {
+ expand_string_message =
+ string_sprintf("missing '}' closing cert arg of %s", name);
+ goto EXPAND_FAILED_CURLY;
+ }
if ((vp = find_var_ent(sub)) && vp->type == vtype_cert)
{
s = s1+1;
switch(c)
{
+ case EOP_BASE32:
+ {
+ uschar *t;
+ unsigned long int n = Ustrtoul(sub, &t, 10);
+ gstring * g = NULL;
+
+ if (*t != 0)
+ {
+ expand_string_message = string_sprintf("argument for base32 "
+ "operator is \"%s\", which is not a decimal number", sub);
+ goto EXPAND_FAILED;
+ }
+ for ( ; n; n >>= 5)
+ g = string_catn(g, &base32_chars[n & 0x1f], 1);
+
+ if (g) while (g->ptr > 0) yield = string_catn(yield, &g->s[--g->ptr], 1);
+ continue;
+ }
+
+ case EOP_BASE32D:
+ {
+ uschar *tt = sub;
+ unsigned long int n = 0;
+ while (*tt)
+ {
+ uschar * t = Ustrchr(base32_chars, *tt++);
+ if (!t)
+ {
+ expand_string_message = string_sprintf("argument for base32d "
+ "operator is \"%s\", which is not a base 32 number", sub);
+ goto EXPAND_FAILED;
+ }
+ n = n * 32 + (t - base32_chars);
+ }
+ yield = string_fmt_append(yield, "%ld", n);
+ continue;
+ }
+
case EOP_BASE62:
{
uschar *t;
"operator is \"%s\", which is not a decimal number", sub);
goto EXPAND_FAILED;
}
- t = string_base62(n);
- yield = string_cat(yield, &size, &ptr, t, Ustrlen(t));
+ yield = string_cat(yield, string_base62(n));
continue;
}
case EOP_BASE62D:
{
- uschar buf[16];
uschar *tt = sub;
unsigned long int n = 0;
while (*tt != 0)
{
uschar *t = Ustrchr(base62_chars, *tt++);
- if (t == NULL)
+ if (!t)
{
expand_string_message = string_sprintf("argument for base62d "
"operator is \"%s\", which is not a base %d number", sub,
}
n = n * BASE_62 + (t - base62_chars);
}
- (void)sprintf(CS buf, "%ld", n);
- yield = string_cat(yield, &size, &ptr, buf, Ustrlen(buf));
+ yield = string_fmt_append(yield, "%ld", n);
continue;
}
+ case EOP_BLESS:
+ /* This is purely for the convenience of the test harness. Do not enable
+ it otherwise as it defeats the taint-checking security. */
+
+ if (f.running_in_test_harness)
+ yield = string_cat(yield, is_tainted(sub)
+ ? string_copy_taint(sub, FALSE) : sub);
+ else
+ {
+ DEBUG(D_expand) debug_printf_indent("bless operator not supported\n");
+ yield = string_cat(yield, sub);
+ }
+ continue;
+
case EOP_EXPAND:
{
uschar *expanded = expand_string_internal(sub, FALSE, NULL, skipping, TRUE, &resetok);
- if (expanded == NULL)
+ if (!expanded)
{
expand_string_message =
string_sprintf("internal expansion of \"%s\" failed: %s", sub,
expand_string_message);
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, expanded, Ustrlen(expanded));
+ yield = string_cat(yield, expanded);
continue;
}
int count = 0;
uschar *t = sub - 1;
while (*(++t) != 0) { *t = tolower(*t); count++; }
- yield = string_cat(yield, &size, &ptr, sub, count);
+ yield = string_catn(yield, sub, count);
continue;
}
int count = 0;
uschar *t = sub - 1;
while (*(++t) != 0) { *t = toupper(*t); count++; }
- yield = string_cat(yield, &size, &ptr, sub, count);
+ yield = string_catn(yield, sub, count);
continue;
}
case EOP_MD5:
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
if (vp && *(void **)vp->value)
{
uschar * cp = tls_cert_fprt_md5(*(void **)vp->value);
- yield = string_cat(yield, &size, &ptr, cp, Ustrlen(cp));
+ yield = string_cat(yield, cp);
}
else
#endif
{
md5 base;
uschar digest[16];
- int j;
- char st[33];
md5_start(&base);
md5_end(&base, sub, Ustrlen(sub), digest);
- for(j = 0; j < 16; j++) sprintf(st+2*j, "%02x", digest[j]);
- yield = string_cat(yield, &size, &ptr, US st, (int)strlen(st));
+ for (int j = 0; j < 16; j++)
+ yield = string_fmt_append(yield, "%02x", digest[j]);
}
continue;
case EOP_SHA1:
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
if (vp && *(void **)vp->value)
{
uschar * cp = tls_cert_fprt_sha1(*(void **)vp->value);
- yield = string_cat(yield, &size, &ptr, cp, Ustrlen(cp));
+ yield = string_cat(yield, cp);
}
else
#endif
{
- sha1 base;
+ hctx h;
uschar digest[20];
- int j;
- char st[41];
- sha1_start(&base);
- sha1_end(&base, sub, Ustrlen(sub), digest);
- for(j = 0; j < 20; j++) sprintf(st+2*j, "%02X", digest[j]);
- yield = string_cat(yield, &size, &ptr, US st, (int)strlen(st));
+ sha1_start(&h);
+ sha1_end(&h, sub, Ustrlen(sub), digest);
+ for (int j = 0; j < 20; j++)
+ yield = string_fmt_append(yield, "%02X", digest[j]);
}
continue;
+ case EOP_SHA2:
case EOP_SHA256:
-#ifdef SUPPORT_TLS
+#ifdef EXIM_HAVE_SHA2
if (vp && *(void **)vp->value)
+ if (c == EOP_SHA256)
+ yield = string_cat(yield, tls_cert_fprt_sha256(*(void **)vp->value));
+ else
+ expand_string_message = US"sha2_N not supported with certificates";
+ else
{
- uschar * cp = tls_cert_fprt_sha256(*(void **)vp->value);
- yield = string_cat(yield, &size, &ptr, cp, (int)Ustrlen(cp));
+ hctx h;
+ blob b;
+ hashmethod m = !arg ? HASH_SHA2_256
+ : Ustrcmp(arg, "256") == 0 ? HASH_SHA2_256
+ : Ustrcmp(arg, "384") == 0 ? HASH_SHA2_384
+ : Ustrcmp(arg, "512") == 0 ? HASH_SHA2_512
+ : HASH_BADTYPE;
+
+ if (m == HASH_BADTYPE || !exim_sha_init(&h, m))
+ {
+ expand_string_message = US"unrecognised sha2 variant";
+ goto EXPAND_FAILED;
+ }
+
+ exim_sha_update(&h, sub, Ustrlen(sub));
+ exim_sha_finish(&h, &b);
+ while (b.len-- > 0)
+ yield = string_fmt_append(yield, "%02X", *b.data++);
}
- else
+#else
+ expand_string_message = US"sha256 only supported with TLS";
#endif
- expand_string_message = US"sha256 only supported for certificates";
continue;
+ case EOP_SHA3:
+#ifdef EXIM_HAVE_SHA3
+ {
+ hctx h;
+ blob b;
+ hashmethod m = !arg ? HASH_SHA3_256
+ : Ustrcmp(arg, "224") == 0 ? HASH_SHA3_224
+ : Ustrcmp(arg, "256") == 0 ? HASH_SHA3_256
+ : Ustrcmp(arg, "384") == 0 ? HASH_SHA3_384
+ : Ustrcmp(arg, "512") == 0 ? HASH_SHA3_512
+ : HASH_BADTYPE;
+
+ if (m == HASH_BADTYPE || !exim_sha_init(&h, m))
+ {
+ expand_string_message = US"unrecognised sha3 variant";
+ goto EXPAND_FAILED;
+ }
+
+ exim_sha_update(&h, sub, Ustrlen(sub));
+ exim_sha_finish(&h, &b);
+ while (b.len-- > 0)
+ yield = string_fmt_append(yield, "%02X", *b.data++);
+ }
+ continue;
+#else
+ expand_string_message = US"sha3 only supported with GnuTLS 3.5.0 + or OpenSSL 1.1.1 +";
+ goto EXPAND_FAILED;
+#endif
+
/* Convert hex encoding to base64 encoding */
case EOP_HEX2B64:
uschar *out = sub;
uschar *enc;
- for (enc = sub; *enc != 0; enc++)
+ for (enc = sub; *enc; enc++)
{
if (!isxdigit(*enc))
{
if (isdigit(c)) c -= '0';
else c = toupper(c) - 'A' + 10;
if (b == -1)
- {
b = c << 4;
- }
else
{
*out++ = b | c;
}
}
- enc = b64encode(sub, out - sub);
- yield = string_cat(yield, &size, &ptr, enc, Ustrlen(enc));
+ enc = b64encode(CUS sub, out - sub);
+ yield = string_cat(yield, enc);
continue;
}
while (*(++t) != 0)
{
if (*t < 0x21 || 0x7E < *t)
- yield = string_cat(yield, &size, &ptr,
- string_sprintf("\\x%02x", *t), 4);
+ yield = string_fmt_append(yield, "\\x%02x", *t);
else
- yield = string_cat(yield, &size, &ptr, t, 1);
+ yield = string_catn(yield, t, 1);
}
continue;
}
{
int cnt = 0;
int sep = 0;
- uschar * cp;
uschar buffer[256];
- while (string_nextinlist(CUSS &sub, &sep, buffer, sizeof(buffer)) != NULL) cnt++;
- cp = string_sprintf("%d", cnt);
- yield = string_cat(yield, &size, &ptr, cp, Ustrlen(cp));
+ while (string_nextinlist(CUSS &sub, &sep, buffer, sizeof(buffer))) cnt++;
+ yield = string_fmt_append(yield, "%d", cnt);
continue;
}
uschar buffer[256];
if (*sub == '+') sub++;
- if (arg == NULL) /* no-argument version */
+ if (!arg) /* no-argument version */
{
if (!(t = tree_search(addresslist_anchor, sub)) &&
!(t = tree_search(domainlist_anchor, sub)) &&
case 'h': t = tree_search(hostlist_anchor, sub); suffix = US"_h"; break;
case 'l': t = tree_search(localpartlist_anchor, sub); suffix = US"_l"; break;
default:
- expand_string_message = string_sprintf("bad suffix on \"list\" operator");
+ expand_string_message = US"bad suffix on \"list\" operator";
goto EXPAND_FAILED;
}
list = ((namedlist_block *)(t->data.ptr))->string;
- while ((item = string_nextinlist(&list, &sep, buffer, sizeof(buffer))) != NULL)
+ while ((item = string_nextinlist(&list, &sep, buffer, sizeof(buffer))))
{
uschar * buf = US" : ";
if (needsep)
- yield = string_cat(yield, &size, &ptr, buf, 3);
+ yield = string_catn(yield, buf, 3);
else
needsep = TRUE;
char * cp;
char tok[3];
tok[0] = sep; tok[1] = ':'; tok[2] = 0;
- while ((cp= strpbrk((const char *)item, tok)))
+ while ((cp= strpbrk(CCS item, tok)))
{
- yield = string_cat(yield, &size, &ptr, item, cp-(char *)item);
+ yield = string_catn(yield, item, cp - CS item);
if (*cp++ == ':') /* colon in a non-colon-sep list item, needs doubling */
{
- yield = string_cat(yield, &size, &ptr, US"::", 2);
- item = (uschar *)cp;
+ yield = string_catn(yield, US"::", 2);
+ item = US cp;
}
else /* sep in item; should already be doubled; emit once */
{
- yield = string_cat(yield, &size, &ptr, (uschar *)tok, 1);
+ yield = string_catn(yield, US tok, 1);
if (*cp == sep) cp++;
- item = (uschar *)cp;
+ item = US cp;
}
}
}
- yield = string_cat(yield, &size, &ptr, item, Ustrlen(item));
+ yield = string_cat(yield, item);
}
continue;
}
+ /* quote a list-item for the given list-separator */
+
/* mask applies a mask to an IP address; for example the result of
${mask:131.111.10.206/28} is 131.111.10.192/28. */
/* Convert to masked textual format and add to output. */
- yield = string_cat(yield, &size, &ptr, buffer,
+ yield = string_catn(yield, buffer,
host_nmtoa(count, binary, mask, buffer, '.'));
continue;
}
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, buffer,
- c == EOP_IPV6NORM
+ yield = string_catn(yield, buffer, c == EOP_IPV6NORM
? ipv6_nmtoa(binary, buffer)
: host_nmtoa(4, binary, -1, buffer, ':')
);
case EOP_LOCAL_PART:
case EOP_DOMAIN:
{
- uschar *error;
+ uschar * error;
int start, end, domain;
- uschar *t = parse_extract_address(sub, &error, &start, &end, &domain,
+ uschar * t = parse_extract_address(sub, &error, &start, &end, &domain,
FALSE);
- if (t != NULL)
- {
- if (c != EOP_DOMAIN)
- {
- if (c == EOP_LOCAL_PART && domain != 0) end = start + domain - 1;
- yield = string_cat(yield, &size, &ptr, sub+start, end-start);
- }
- else if (domain != 0)
- {
- domain += start;
- yield = string_cat(yield, &size, &ptr, sub+domain, end-domain);
- }
- }
+ if (t)
+ if (c != EOP_DOMAIN)
+ yield = c == EOP_LOCAL_PART && domain > 0
+ ? string_catn(yield, t, domain - 1)
+ : string_cat(yield, t);
+ else if (domain > 0)
+ yield = string_cat(yield, t + domain);
continue;
}
{
uschar outsep[2] = { ':', '\0' };
uschar *address, *error;
- int save_ptr = ptr;
+ int save_ptr = gstring_length(yield);
int start, end, domain; /* Not really used */
- while (isspace(*sub)) sub++;
- if (*sub == '>') { *outsep = *++sub; ++sub; }
- parse_allow_group = TRUE;
+ if (Uskip_whitespace(&sub) == '>')
+ if (*outsep = *++sub) ++sub;
+ else
+ {
+ expand_string_message = string_sprintf("output separator "
+ "missing in expanding ${addresses:%s}", --sub);
+ goto EXPAND_FAILED;
+ }
+ f.parse_allow_group = TRUE;
for (;;)
{
- uschar *p = parse_find_address_end(sub, FALSE);
+ uschar * p = parse_find_address_end(sub, FALSE);
uschar saveend = *p;
*p = '\0';
address = parse_extract_address(sub, &error, &start, &end, &domain,
list, add in a space if the new address begins with the separator
character, or is an empty string. */
- if (address != NULL)
+ if (address)
{
- if (ptr != save_ptr && address[0] == *outsep)
- yield = string_cat(yield, &size, &ptr, US" ", 1);
+ if (yield && yield->ptr != save_ptr && address[0] == *outsep)
+ yield = string_catn(yield, US" ", 1);
for (;;)
{
size_t seglen = Ustrcspn(address, outsep);
- yield = string_cat(yield, &size, &ptr, address, seglen + 1);
+ yield = string_catn(yield, address, seglen + 1);
/* If we got to the end of the string we output one character
too many. */
- if (address[seglen] == '\0') { ptr--; break; }
- yield = string_cat(yield, &size, &ptr, outsep, 1);
+ if (address[seglen] == '\0') { yield->ptr--; break; }
+ yield = string_catn(yield, outsep, 1);
address += seglen + 1;
}
/* Output a separator after the string: we will remove the
redundant final one at the end. */
- yield = string_cat(yield, &size, &ptr, outsep, 1);
+ yield = string_catn(yield, outsep, 1);
}
if (saveend == '\0') break;
/* If we have generated anything, remove the redundant final
separator. */
- if (ptr != save_ptr) ptr--;
- parse_allow_group = FALSE;
+ if (yield && yield->ptr != save_ptr) yield->ptr--;
+ f.parse_allow_group = FALSE;
continue;
}
case EOP_QUOTE:
case EOP_QUOTE_LOCAL_PART:
- if (arg == NULL)
+ if (!arg)
{
- BOOL needs_quote = (*sub == 0); /* TRUE for empty string */
+ BOOL needs_quote = (!*sub); /* TRUE for empty string */
uschar *t = sub - 1;
if (c == EOP_QUOTE)
if (needs_quote)
{
- yield = string_cat(yield, &size, &ptr, US"\"", 1);
+ yield = string_catn(yield, US"\"", 1);
t = sub - 1;
while (*(++t) != 0)
{
if (*t == '\n')
- yield = string_cat(yield, &size, &ptr, US"\\n", 2);
+ yield = string_catn(yield, US"\\n", 2);
else if (*t == '\r')
- yield = string_cat(yield, &size, &ptr, US"\\r", 2);
+ yield = string_catn(yield, US"\\r", 2);
else
{
if (*t == '\\' || *t == '"')
- yield = string_cat(yield, &size, &ptr, US"\\", 1);
- yield = string_cat(yield, &size, &ptr, t, 1);
+ yield = string_catn(yield, US"\\", 1);
+ yield = string_catn(yield, t, 1);
}
}
- yield = string_cat(yield, &size, &ptr, US"\"", 1);
+ yield = string_catn(yield, US"\"", 1);
}
- else yield = string_cat(yield, &size, &ptr, sub, Ustrlen(sub));
+ else yield = string_cat(yield, sub);
continue;
}
int n;
uschar *opt = Ustrchr(arg, '_');
- if (opt != NULL) *opt++ = 0;
+ if (opt) *opt++ = 0;
- n = search_findtype(arg, Ustrlen(arg));
- if (n < 0)
+ if ((n = search_findtype(arg, Ustrlen(arg))) < 0)
{
expand_string_message = search_error_message;
goto EXPAND_FAILED;
}
- if (lookup_list[n]->quote != NULL)
+ if (lookup_list[n]->quote)
sub = (lookup_list[n]->quote)(sub, opt);
- else if (opt != NULL) sub = NULL;
+ else if (opt)
+ sub = NULL;
- if (sub == NULL)
+ if (!sub)
{
expand_string_message = string_sprintf(
"\"%s\" unrecognized after \"${quote_%s\"",
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, sub, Ustrlen(sub));
+ yield = string_cat(yield, sub);
continue;
}
while (*(++t) != 0)
{
if (!isalnum(*t))
- yield = string_cat(yield, &size, &ptr, US"\\", 1);
- yield = string_cat(yield, &size, &ptr, t, 1);
+ yield = string_catn(yield, US"\\", 1);
+ yield = string_catn(yield, t, 1);
}
continue;
}
case EOP_RFC2047:
{
uschar buffer[2048];
- const uschar *string = parse_quote_2047(sub, Ustrlen(sub), headers_charset,
- buffer, sizeof(buffer), FALSE);
- yield = string_cat(yield, &size, &ptr, string, Ustrlen(string));
+ yield = string_cat(yield,
+ parse_quote_2047(sub, Ustrlen(sub), headers_charset,
+ buffer, sizeof(buffer), FALSE));
continue;
}
uschar *error;
uschar *decoded = rfc2047_decode(sub, check_rfc2047_length,
headers_charset, '?', &len, &error);
- if (error != NULL)
+ if (error)
{
expand_string_message = error;
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, decoded, len);
+ yield = string_catn(yield, decoded, len);
continue;
}
case EOP_FROM_UTF8:
{
- while (*sub != 0)
+ uschar * buff = store_get(4, is_tainted(sub));
+ while (*sub)
{
int c;
- uschar buff[4];
GETUTF8INC(c, sub);
if (c > 255) c = '_';
buff[0] = c;
- yield = string_cat(yield, &size, &ptr, buff, 1);
+ yield = string_catn(yield, buff, 1);
}
continue;
}
- /* replace illegal UTF-8 sequences by replacement character */
+ /* replace illegal UTF-8 sequences by replacement character */
#define UTF8_REPLACEMENT_CHAR US"?"
{
int seq_len = 0, index = 0;
int bytes_left = 0;
- long codepoint = -1;
+ long codepoint = -1;
+ int complete;
uschar seq_buff[4]; /* accumulate utf-8 here */
- while (*sub != 0)
+ /* Manually track tainting, as we deal in individual chars below */
+
+ if (is_tainted(sub))
+ if (yield->s && yield->ptr)
+ gstring_rebuffer(yield);
+ else
+ yield->s = store_get(yield->size = Ustrlen(sub), TRUE);
+
+ /* Check the UTF-8, byte-by-byte */
+
+ while (*sub)
{
- int complete = 0;
+ complete = 0;
uschar c = *sub++;
if (bytes_left)
complete = -1; /* error (RFC3629 limit) */
else
{ /* finished; output utf-8 sequence */
- yield = string_cat(yield, &size, &ptr, seq_buff, seq_len);
+ yield = string_catn(yield, seq_buff, seq_len);
index = 0;
}
}
}
else /* no bytes left: new sequence */
{
- if((c & 0x80) == 0) /* 1-byte sequence, US-ASCII, keep it */
+ if(!(c & 0x80)) /* 1-byte sequence, US-ASCII, keep it */
{
- yield = string_cat(yield, &size, &ptr, &c, 1);
+ yield = string_catn(yield, &c, 1);
continue;
}
if((c & 0xe0) == 0xc0) /* 2-byte sequence */
if (complete != 0)
{
bytes_left = index = 0;
- yield = string_cat(yield, &size, &ptr, UTF8_REPLACEMENT_CHAR, 1);
+ yield = string_catn(yield, UTF8_REPLACEMENT_CHAR, 1);
}
if ((complete == 1) && ((c & 0x80) == 0))
/* ASCII character follows incomplete sequence */
- yield = string_cat(yield, &size, &ptr, &c, 1);
+ yield = string_catn(yield, &c, 1);
}
+ /* If given a sequence truncated mid-character, we also want to report ?
+ * Eg, ${length_1:フィル} is one byte, not one character, so we expect
+ * ${utf8clean:${length_1:フィル}} to yield '?' */
+ if (bytes_left != 0)
+ yield = string_catn(yield, UTF8_REPLACEMENT_CHAR, 1);
+
continue;
}
string_printing(sub), error);
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, s, Ustrlen(s));
+ yield = string_cat(yield, s);
continue;
}
string_printing(sub), error);
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, s, Ustrlen(s));
+ yield = string_cat(yield, s);
continue;
}
string_printing(sub), error);
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, s, Ustrlen(s));
- DEBUG(D_expand) debug_printf("yield: '%s'\n", yield);
+ yield = string_cat(yield, s);
+ DEBUG(D_expand) debug_printf_indent("yield: '%s'\n", yield->s);
continue;
}
string_printing(sub), error);
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, s, Ustrlen(s));
+ yield = string_cat(yield, s);
continue;
}
#endif /* EXPERIMENTAL_INTERNATIONAL */
case EOP_ESCAPE:
{
- const uschar *t = string_printing(sub);
- yield = string_cat(yield, &size, &ptr, t, Ustrlen(t));
+ const uschar * t = string_printing(sub);
+ yield = string_cat(yield, t);
continue;
}
+ case EOP_ESCAPE8BIT:
+ {
+ uschar c;
+
+ for (const uschar * s = sub; (c = *s); s++)
+ yield = c < 127 && c != '\\'
+ ? string_catn(yield, s, 1)
+ : string_fmt_append(yield, "\\%03o", c);
+ continue;
+ }
+
/* Handle numeric expression evaluation */
case EOP_EVAL:
uschar *save_sub = sub;
uschar *error = NULL;
int_eximarith_t n = eval_expr(&sub, (c == EOP_EVAL10), &error, FALSE);
- if (error != NULL)
+ if (error)
{
expand_string_message = string_sprintf("error in expression "
- "evaluation: %s (after processing \"%.*s\")", error, sub-save_sub,
- save_sub);
+ "evaluation: %s (after processing \"%.*s\")", error,
+ (int)(sub-save_sub), save_sub);
goto EXPAND_FAILED;
}
- sprintf(CS var_buffer, PR_EXIM_ARITH, n);
- yield = string_cat(yield, &size, &ptr, var_buffer, Ustrlen(var_buffer));
+ yield = string_fmt_append(yield, PR_EXIM_ARITH, n);
continue;
}
- /* Handle time period formating */
+ /* Handle time period formatting */
case EOP_TIME_EVAL:
{
"Exim time interval in \"%s\" operator", sub, name);
goto EXPAND_FAILED;
}
- sprintf(CS var_buffer, "%d", n);
- yield = string_cat(yield, &size, &ptr, var_buffer, Ustrlen(var_buffer));
+ yield = string_fmt_append(yield, "%d", n);
continue;
}
goto EXPAND_FAILED;
}
t = readconf_printtime(n);
- yield = string_cat(yield, &size, &ptr, t, Ustrlen(t));
+ yield = string_cat(yield, t);
continue;
}
case EOP_STR2B64:
case EOP_BASE64:
- {
- uschar *encstr = b64encode(sub, Ustrlen(sub));
- yield = string_cat(yield, &size, &ptr, encstr, Ustrlen(encstr));
- continue;
- }
+ {
+#ifndef DISABLE_TLS
+ uschar * s = vp && *(void **)vp->value
+ ? tls_cert_der_b64(*(void **)vp->value)
+ : b64encode(CUS sub, Ustrlen(sub));
+#else
+ uschar * s = b64encode(CUS sub, Ustrlen(sub));
+#endif
+ yield = string_cat(yield, s);
+ continue;
+ }
case EOP_BASE64D:
{
- uschar *s;
+ uschar * s;
int len = b64decode(sub, &s);
if (len < 0)
{
"well-formed for \"%s\" operator", sub, name);
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, s, Ustrlen(s));
+ yield = string_cat(yield, s);
continue;
}
/* strlen returns the length of the string */
case EOP_STRLEN:
- {
- uschar buff[24];
- (void)sprintf(CS buff, "%d", Ustrlen(sub));
- yield = string_cat(yield, &size, &ptr, buff, Ustrlen(buff));
+ yield = string_fmt_append(yield, "%d", Ustrlen(sub));
continue;
- }
/* length_n or l_n takes just the first n characters or the whole string,
whichever is the shorter;
int len;
uschar *ret;
- if (arg == NULL)
+ if (!arg)
{
expand_string_message = string_sprintf("missing values after %s",
name);
/* Perform the required operation */
- ret =
- (c == EOP_HASH || c == EOP_H)?
- compute_hash(sub, value1, value2, &len) :
- (c == EOP_NHASH || c == EOP_NH)?
- compute_nhash(sub, value1, value2, &len) :
- extract_substr(sub, value1, value2, &len);
+ ret = c == EOP_HASH || c == EOP_H
+ ? compute_hash(sub, value1, value2, &len)
+ : c == EOP_NHASH || c == EOP_NH
+ ? compute_nhash(sub, value1, value2, &len)
+ : extract_substr(sub, value1, value2, &len);
+ if (!ret) goto EXPAND_FAILED;
- if (ret == NULL) goto EXPAND_FAILED;
- yield = string_cat(yield, &size, &ptr, ret, len);
+ yield = string_catn(yield, ret, len);
continue;
}
case EOP_STAT:
{
- uschar *s;
uschar smode[12];
uschar **modetable[3];
- int i;
mode_t mode;
struct stat st;
- if ((expand_forbid & RDO_EXISTS) != 0)
+ if (expand_forbid & RDO_EXISTS)
{
expand_string_message = US"Use of the stat() expansion is not permitted";
goto EXPAND_FAILED;
modetable[1] = ((mode & 02000) == 0)? mtable_normal : mtable_setid;
modetable[2] = ((mode & 04000) == 0)? mtable_normal : mtable_setid;
- for (i = 0; i < 3; i++)
+ for (int i = 0; i < 3; i++)
{
memcpy(CS(smode + 7 - i*3), CS(modetable[i][mode & 7]), 3);
mode >>= 3;
}
smode[10] = 0;
- s = string_sprintf("mode=%04lo smode=%s inode=%ld device=%ld links=%ld "
+ yield = string_fmt_append(yield,
+ "mode=%04lo smode=%s inode=%ld device=%ld links=%ld "
"uid=%ld gid=%ld size=" OFF_T_FMT " atime=%ld mtime=%ld ctime=%ld",
(long)(st.st_mode & 077777), smode, (long)st.st_ino,
(long)st.st_dev, (long)st.st_nlink, (long)st.st_uid,
(long)st.st_gid, st.st_size, (long)st.st_atime,
(long)st.st_mtime, (long)st.st_ctime);
- yield = string_cat(yield, &size, &ptr, s, Ustrlen(s));
continue;
}
case EOP_RANDINT:
{
- int_eximarith_t max;
- uschar *s;
+ int_eximarith_t max = expanded_string_integer(sub, TRUE);
- max = expanded_string_integer(sub, TRUE);
- if (expand_string_message != NULL)
+ if (expand_string_message)
goto EXPAND_FAILED;
- s = string_sprintf("%d", vaguely_random_number((int)max));
- yield = string_cat(yield, &size, &ptr, s, Ustrlen(s));
+ yield = string_fmt_append(yield, "%d", vaguely_random_number((int)max));
continue;
}
goto EXPAND_FAILED;
}
invert_address(reversed, sub);
- yield = string_cat(yield, &size, &ptr, reversed, Ustrlen(reversed));
+ yield = string_cat(yield, reversed);
continue;
}
/* Unknown operator */
default:
- expand_string_message =
- string_sprintf("unknown expansion operator \"%s\"", name);
- goto EXPAND_FAILED;
+ expand_string_message =
+ string_sprintf("unknown expansion operator \"%s\"", name);
+ goto EXPAND_FAILED;
}
}
{
int len;
int newsize = 0;
- if (ptr == 0)
+ gstring * g = NULL;
+
+ if (!yield)
+ g = store_get(sizeof(gstring), FALSE);
+ else if (yield->ptr == 0)
{
- if (resetok) store_reset(yield);
+ if (resetok) reset_point = store_reset(reset_point);
yield = NULL;
- size = 0;
+ reset_point = store_mark();
+ g = store_get(sizeof(gstring), FALSE); /* alloc _before_ calling find_variable() */
}
- value = find_variable(name, FALSE, skipping, &newsize);
- if (value == NULL)
+ if (!(value = find_variable(name, FALSE, skipping, &newsize)))
{
expand_string_message =
string_sprintf("unknown variable in \"${%s}\"", name);
goto EXPAND_FAILED;
}
len = Ustrlen(value);
- if (yield == NULL && newsize != 0)
+ if (!yield && newsize)
{
- yield = value;
- size = newsize;
- ptr = len;
+ yield = g;
+ yield->size = newsize;
+ yield->ptr = len;
+ yield->s = value;
}
- else yield = string_cat(yield, &size, &ptr, value, len);
+ else
+ yield = string_catn(yield, value, len);
continue;
}
if (ket_ends && *s == 0)
{
- expand_string_message = malformed_header?
- US"missing } at end of string - could be header name not terminated by colon"
- :
- US"missing } at end of string";
+ expand_string_message = malformed_header
+ ? US"missing } at end of string - could be header name not terminated by colon"
+ : US"missing } at end of string";
goto EXPAND_FAILED;
}
added to the string. If so, set up an empty string. Add a terminating zero. If
left != NULL, return a pointer to the terminator. */
-if (yield == NULL) yield = store_get(1);
-yield[ptr] = 0;
-if (left != NULL) *left = s;
+if (!yield)
+ yield = string_get(1);
+(void) string_from_gstring(yield);
+if (left) *left = s;
/* Any stacking store that was used above the final string is no longer needed.
In many cases the final string will be the first one that was got and so there
will be optimal store usage. */
-if (resetok) store_reset(yield + ptr + 1);
+if (resetok) gstring_release_unused(yield);
else if (resetok_p) *resetok_p = FALSE;
DEBUG(D_expand)
{
- debug_printf("expanding: %.*s\n result: %s\n", (int)(s - string), string,
- yield);
- if (skipping) debug_printf("skipping: result is not used\n");
+ BOOL tainted = is_tainted(yield->s);
+ DEBUG(D_noutf8)
+ {
+ debug_printf_indent("|--expanding: %.*s\n", (int)(s - string), string);
+ debug_printf_indent("%sresult: %s\n",
+ skipping ? "|-----" : "\\_____", yield->s);
+ if (tainted)
+ debug_printf_indent("%s \\__(tainted)\n",
+ skipping ? "| " : " ");
+ if (skipping)
+ debug_printf_indent("\\___skipping: result is not used\n");
+ }
+ else
+ {
+ debug_printf_indent(UTF8_VERT_RIGHT UTF8_HORIZ UTF8_HORIZ
+ "expanding: %.*s\n",
+ (int)(s - string), string);
+ debug_printf_indent("%s" UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ
+ "result: %s\n",
+ skipping ? UTF8_VERT_RIGHT : UTF8_UP_RIGHT,
+ yield->s);
+ if (tainted)
+ debug_printf_indent("%s(tainted)\n",
+ skipping
+ ? UTF8_VERT " " : " " UTF8_UP_RIGHT UTF8_HORIZ UTF8_HORIZ);
+ if (skipping)
+ debug_printf_indent(UTF8_UP_RIGHT UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ
+ "skipping: result is not used\n");
+ }
}
-return yield;
+expand_level--;
+return yield->s;
/* This is the failure exit: easiest to program with a goto. We still need
to update the pointer to the terminator, for cases of nested calls with "fail".
*/
EXPAND_FAILED_CURLY:
-expand_string_message = malformed_header?
- US"missing or misplaced { or } - could be header name not terminated by colon"
- :
- US"missing or misplaced { or }";
+if (malformed_header)
+ expand_string_message =
+ US"missing or misplaced { or } - could be header name not terminated by colon";
+
+else if (!expand_string_message || !*expand_string_message)
+ expand_string_message = US"missing or misplaced { or }";
/* At one point, Exim reset the store to yield (if yield was not NULL), but
that is a bad idea, because expand_string_message is in dynamic store. */
EXPAND_FAILED:
-if (left != NULL) *left = s;
+if (left) *left = s;
DEBUG(D_expand)
- {
- debug_printf("failed to expand: %s\n", string);
- debug_printf(" error message: %s\n", expand_string_message);
- if (expand_string_forcedfail) debug_printf("failure was forced\n");
- }
-if (resetok_p) *resetok_p = resetok;
+ DEBUG(D_noutf8)
+ {
+ debug_printf_indent("|failed to expand: %s\n", string);
+ debug_printf_indent("%serror message: %s\n",
+ f.expand_string_forcedfail ? "|---" : "\\___", expand_string_message);
+ if (f.expand_string_forcedfail)
+ debug_printf_indent("\\failure was forced\n");
+ }
+ else
+ {
+ debug_printf_indent(UTF8_VERT_RIGHT "failed to expand: %s\n",
+ string);
+ debug_printf_indent("%s" UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ
+ "error message: %s\n",
+ f.expand_string_forcedfail ? UTF8_VERT_RIGHT : UTF8_UP_RIGHT,
+ expand_string_message);
+ if (f.expand_string_forcedfail)
+ debug_printf_indent(UTF8_UP_RIGHT "failure was forced\n");
+ }
+if (resetok_p && !resetok) *resetok_p = FALSE;
+expand_level--;
return NULL;
}
due to a lookup deferring, search_find_defer will be TRUE
*/
-uschar *
-expand_string(uschar *string)
+const uschar *
+expand_cstring(const uschar * string)
{
-search_find_defer = FALSE;
-malformed_header = FALSE;
-return (Ustrpbrk(string, "$\\") == NULL)? string :
- expand_string_internal(string, FALSE, NULL, FALSE, TRUE, NULL);
+if (Ustrpbrk(string, "$\\") != NULL)
+ {
+ int old_pool = store_pool;
+ uschar * s;
+
+ f.search_find_defer = FALSE;
+ malformed_header = FALSE;
+ store_pool = POOL_MAIN;
+ s = expand_string_internal(string, FALSE, NULL, FALSE, TRUE, NULL);
+ store_pool = old_pool;
+ return s;
+ }
+return string;
}
-
-const uschar *
-expand_cstring(const uschar *string)
+uschar *
+expand_string(uschar * string)
{
-search_find_defer = FALSE;
-malformed_header = FALSE;
-return (Ustrpbrk(string, "$\\") == NULL)? string :
- expand_string_internal(string, FALSE, NULL, FALSE, TRUE, NULL);
+return US expand_cstring(CUS string);
}
+
+
/*************************************************
* Expand and copy *
*************************************************/
/* If expansion failed, expand_string_message will be set. */
-if (s == NULL) return -1;
+if (!s) return -1;
/* On an overflow, strtol() returns LONG_MAX or LONG_MIN, and sets errno
to ERANGE. When there isn't an overflow, errno is not changed, at least on some
noop change since strtol skips it anyway (provided that there is a number
to find at all). */
if (isspace(*s))
- {
- while (isspace(*s)) ++s;
- if (*s == '\0')
+ if (Uskip_whitespace(&s) == '\0')
{
DEBUG(D_expand)
- debug_printf("treating blank string as number 0\n");
+ debug_printf_indent("treating blank string as number 0\n");
return 0;
}
- }
value = strtoll(CS s, CSS &endptr, 10);
if (endptr == s)
- {
msg = US"integer expected but \"%s\" found";
- }
else if (value < 0 && isplus)
- {
msg = US"non-negative integer expected but \"%s\" found";
- }
else
{
switch (tolower(*endptr))
if (errno == ERANGE)
msg = US"absolute value of integer \"%s\" is too large (overflow)";
else
- {
- while (isspace(*endptr)) endptr++;
- if (*endptr == 0) return value;
- }
+ if (Uskip_whitespace(&endptr) == 0) return value;
}
expand_string_message = string_sprintf(CS msg, s);
uschar *svalue, BOOL *rvalue)
{
uschar *expanded;
-if (svalue == NULL) { *rvalue = bvalue; return OK; }
+if (!svalue) { *rvalue = bvalue; return OK; }
-expanded = expand_string(svalue);
-if (expanded == NULL)
+if (!(expanded = expand_string(svalue)))
{
- if (expand_string_forcedfail)
+ if (f.expand_string_forcedfail)
{
DEBUG(dbg_opt) debug_printf("expansion of \"%s\" forced failure\n", oname);
*rvalue = bvalue;
+/* Avoid potentially exposing a password in a string about to be logged */
+
+uschar *
+expand_hide_passwords(uschar * s)
+{
+return ( ( Ustrstr(s, "failed to expand") != NULL
+ || Ustrstr(s, "expansion of ") != NULL
+ )
+ && ( Ustrstr(s, "mysql") != NULL
+ || Ustrstr(s, "pgsql") != NULL
+ || Ustrstr(s, "redis") != NULL
+ || Ustrstr(s, "sqlite") != NULL
+ || Ustrstr(s, "ldap:") != NULL
+ || Ustrstr(s, "ldaps:") != NULL
+ || Ustrstr(s, "ldapi:") != NULL
+ || Ustrstr(s, "ldapdn:") != NULL
+ || Ustrstr(s, "ldapm:") != NULL
+ ) )
+ ? US"Temporary internal error" : s;
+}
+
+
+/* Read given named file into big_buffer. Use for keying material etc.
+The content will have an ascii NUL appended.
+
+Arguments:
+ filename as it says
+
+Return: pointer to buffer, or NULL on error.
+*/
+
+uschar *
+expand_file_big_buffer(const uschar * filename)
+{
+int fd, off = 0, len;
+
+if ((fd = exim_open2(CS filename, O_RDONLY)) < 0)
+ {
+ log_write(0, LOG_MAIN | LOG_PANIC, "unable to open file for reading: %s",
+ filename);
+ return NULL;
+ }
+
+do
+ {
+ if ((len = read(fd, big_buffer + off, big_buffer_size - 2 - off)) < 0)
+ {
+ (void) close(fd);
+ log_write(0, LOG_MAIN|LOG_PANIC, "unable to read file: %s", filename);
+ return NULL;
+ }
+ off += len;
+ }
+while (len > 0);
+
+(void) close(fd);
+big_buffer[off] = '\0';
+return big_buffer;
+}
+
+
+
+/*************************************************
+* Error-checking for testsuite *
+*************************************************/
+typedef struct {
+ uschar * region_start;
+ uschar * region_end;
+ const uschar *var_name;
+ const uschar *var_data;
+} err_ctx;
+
+static void
+assert_variable_notin(uschar * var_name, uschar * var_data, void * ctx)
+{
+err_ctx * e = ctx;
+if (var_data >= e->region_start && var_data < e->region_end)
+ {
+ e->var_name = CUS var_name;
+ e->var_data = CUS var_data;
+ }
+}
+
+void
+assert_no_variables(void * ptr, int len, const char * filename, int linenumber)
+{
+err_ctx e = { .region_start = ptr, .region_end = US ptr + len,
+ .var_name = NULL, .var_data = NULL };
+
+/* check acl_ variables */
+tree_walk(acl_var_c, assert_variable_notin, &e);
+tree_walk(acl_var_m, assert_variable_notin, &e);
+
+/* check auth<n> variables */
+for (int i = 0; i < AUTH_VARS; i++) if (auth_vars[i])
+ assert_variable_notin(US"auth<n>", auth_vars[i], &e);
+
+/* check regex<n> variables */
+for (int i = 0; i < REGEX_VARS; i++) if (regex_vars[i])
+ assert_variable_notin(US"regex<n>", regex_vars[i], &e);
+
+/* check known-name variables */
+for (var_entry * v = var_table; v < var_table + var_table_size; v++)
+ if (v->type == vtype_stringptr)
+ assert_variable_notin(US v->name, *(USS v->value), &e);
+
+/* check dns and address trees */
+tree_walk(tree_dns_fails, assert_variable_notin, &e);
+tree_walk(tree_duplicates, assert_variable_notin, &e);
+tree_walk(tree_nonrecipients, assert_variable_notin, &e);
+tree_walk(tree_unusable, assert_variable_notin, &e);
+
+if (e.var_name)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE,
+ "live variable '%s' destroyed by reset_store at %s:%d\n- value '%.64s'",
+ e.var_name, filename, linenumber, e.var_data);
+}
+
+
/*************************************************
**************************************************
if (n == 0) n = EXPAND_MAXN + 1;
if (yield)
{
- int nn;
- expand_nmax = (setup < 0)? 0 : setup + 1;
- for (nn = (setup < 0)? 0 : 2; nn < n*2; nn += 2)
+ expand_nmax = setup < 0 ? 0 : setup + 1;
+ for (int nn = setup < 0 ? 0 : 2; nn < n*2; nn += 2)
{
expand_nstring[expand_nmax] = subject + ovector[nn];
expand_nlength[expand_nmax++] = ovector[nn+1] - ovector[nn];
int main(int argc, uschar **argv)
{
-int i;
uschar buffer[1024];
debug_selector = D_v;
debug_fd = fileno(debug_file);
big_buffer = malloc(big_buffer_size);
-for (i = 1; i < argc; i++)
+for (int i = 1; i < argc; i++)
{
if (argv[i][0] == '+')
{
}
#endif /* EXIM_PERL */
+/* Thie deliberately regards the input as untainted, so that it can be
+expanded; only reasonable since this is a test for string-expansions. */
+
while (fgets(buffer, sizeof(buffer), stdin) != NULL)
{
- void *reset_point = store_get(0);
+ rmark reset_point = store_mark();
uschar *yield = expand_string(buffer);
- if (yield != NULL)
- {
+ if (yield)
printf("%s\n", yield);
- store_reset(reset_point);
- }
else
{
- if (search_find_defer) printf("search_find deferred\n");
+ if (f.search_find_defer) printf("search_find deferred\n");
printf("Failed: %s\n", expand_string_message);
- if (expand_string_forcedfail) printf("Forced failure\n");
+ if (f.expand_string_forcedfail) printf("Forced failure\n");
printf("\n");
}
+ store_reset(reset_point);
}
search_tidyup();
projects / exim.git / blobdiff