* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2012 */
+/* Copyright (c) University of Cambridge 1995 - 2014 */
/* See the file NOTICE for conditions of use and distribution. */
/* Recursively called function */
-static uschar *expand_string_internal(uschar *, BOOL, uschar **, BOOL, BOOL);
+static uschar *expand_string_internal(uschar *, BOOL, uschar **, BOOL, BOOL, BOOL *);
#ifdef STAND_ALONE
#ifndef SUPPORT_CRYPTEQ
+#ifndef nelements
+# define nelements(arr) (sizeof(arr) / sizeof(*arr))
+#endif
/*************************************************
* Local statics and tables *
static uschar *item_table[] = {
US"acl",
+ US"certextract",
US"dlfunc",
US"extract",
US"filter",
US"hmac",
US"if",
US"length",
+ US"listextract",
US"lookup",
US"map",
US"nhash",
enum {
EITEM_ACL,
+ EITEM_CERTEXTRACT,
EITEM_DLFUNC,
EITEM_EXTRACT,
EITEM_FILTER,
EITEM_HMAC,
EITEM_IF,
EITEM_LENGTH,
+ EITEM_LISTEXTRACT,
EITEM_LOOKUP,
EITEM_MAP,
EITEM_NHASH,
US"h",
US"hash",
US"hex2b64",
+ US"hexquote",
US"l",
US"lc",
US"length",
US"rxquote",
US"s",
US"sha1",
+ US"sha256",
US"stat",
US"str2b64",
US"strlen",
US"substr",
- US"uc" };
+ US"uc",
+ US"utf8clean" };
enum {
EOP_ADDRESS = sizeof(op_table_underscore)/sizeof(uschar *),
EOP_H,
EOP_HASH,
EOP_HEX2B64,
+ EOP_HEXQUOTE,
EOP_L,
EOP_LC,
EOP_LENGTH,
EOP_RXQUOTE,
EOP_S,
EOP_SHA1,
+ EOP_SHA256,
EOP_STAT,
EOP_STR2B64,
EOP_STRLEN,
EOP_SUBSTR,
- EOP_UC };
+ EOP_UC,
+ EOP_UTF8CLEAN };
/* Table of condition names, and corresponding switch numbers. The names must
US"==", /* Backward compatibility */
US">",
US">=",
+ US"acl",
US"and",
US"bool",
US"bool_lax",
ECOND_NUM_EE,
ECOND_NUM_G,
ECOND_NUM_GE,
+ ECOND_ACL,
ECOND_AND,
ECOND_BOOL,
ECOND_BOOL_LAX,
};
-/* Type for main variable table */
-
-typedef struct {
- const char *name;
- int type;
- void *value;
-} var_entry;
-
-/* Type for entries pointing to address/length pairs. Not currently
-in use. */
-
-typedef struct {
- uschar **address;
- int *length;
-} alblock;
-
/* Types of table entry */
-enum {
+enum vtypes {
vtype_int, /* value is address of int */
vtype_filter_int, /* ditto, but recognized only when filtering */
vtype_ino, /* value is address of ino_t (not always an int) */
vtype_msgheaders_raw, /* the message's headers, unprocessed */
vtype_localpart, /* extract local part from string */
vtype_domain, /* extract domain from string */
- vtype_recipients, /* extract recipients from recipients list */
- /* (available only in system filters, ACLs, and */
- /* local_scan()) */
+ vtype_string_func, /* value is string returned by given function */
vtype_todbsdin, /* value not used; generate BSD inbox tod */
vtype_tode, /* value not used; generate tod in epoch format */
vtype_todel, /* value not used; generate tod in epoch/usec format */
vtype_host_lookup, /* value not used; get host name */
vtype_load_avg, /* value not used; result is int from os_getloadavg */
vtype_pspace, /* partition space; value is T/F for spool/log */
- vtype_pinodes /* partition inodes; value is T/F for spool/log */
+ vtype_pinodes, /* partition inodes; value is T/F for spool/log */
+ vtype_cert /* SSL certificate */
#ifndef DISABLE_DKIM
,vtype_dkim /* Lookup of value in DKIM signature */
#endif
- };
+};
+
+/* Type for main variable table */
+
+typedef struct {
+ const char *name;
+ enum vtypes type;
+ void *value;
+} var_entry;
+
+/* Type for entries pointing to address/length pairs. Not currently
+in use. */
+
+typedef struct {
+ uschar **address;
+ int *length;
+} alblock;
+
+static uschar * fn_recipients(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 },
+ { "authenticated_fail_id",vtype_stringptr, &authenticated_fail_id },
{ "authenticated_id", vtype_stringptr, &authenticated_id },
{ "authenticated_sender",vtype_stringptr, &authenticated_sender },
{ "authentication_failed",vtype_int, &authentication_failed },
{ "dkim_signers", vtype_stringptr, &dkim_signers },
{ "dkim_verify_reason", vtype_dkim, (void *)DKIM_VERIFY_REASON },
{ "dkim_verify_status", vtype_dkim, (void *)DKIM_VERIFY_STATUS},
+#endif
+#ifdef EXPERIMENTAL_DMARC
+ { "dmarc_ar_header", vtype_stringptr, &dmarc_ar_header },
+ { "dmarc_domain_policy", vtype_stringptr, &dmarc_domain_policy },
+ { "dmarc_status", vtype_stringptr, &dmarc_status },
+ { "dmarc_status_text", vtype_stringptr, &dmarc_status_text },
+ { "dmarc_used_domain", vtype_stringptr, &dmarc_used_domain },
#endif
{ "dnslist_domain", vtype_stringptr, &dnslist_domain },
{ "dnslist_matched", vtype_stringptr, &dnslist_matched },
#ifdef WITH_OLD_DEMIME
{ "found_extension", vtype_stringptr, &found_extension },
#endif
+ { "headers_added", vtype_string_func, &fn_hdrs_added },
{ "home", vtype_stringptr, &deliver_home },
{ "host", vtype_stringptr, &deliver_host },
{ "host_address", vtype_stringptr, &deliver_host_address },
{ "localhost_number", vtype_int, &host_number },
{ "log_inodes", vtype_pinodes, (void *)FALSE },
{ "log_space", vtype_pspace, (void *)FALSE },
+ { "lookup_dnssec_authenticated",vtype_stringptr,&lookup_dnssec_authenticated},
{ "mailstore_basename", vtype_stringptr, &mailstore_basename },
#ifdef WITH_CONTENT_SCAN
{ "malware_name", vtype_stringptr, &malware_name },
{ "parent_local_part", vtype_stringptr, &deliver_localpart_parent },
{ "pid", vtype_pid, NULL },
{ "primary_hostname", vtype_stringptr, &primary_hostname },
+#ifdef EXPERIMENTAL_PROXY
+ { "proxy_host_address", vtype_stringptr, &proxy_host_address },
+ { "proxy_host_port", vtype_int, &proxy_host_port },
+ { "proxy_session", vtype_bool, &proxy_session },
+ { "proxy_target_address",vtype_stringptr, &proxy_target_address },
+ { "proxy_target_port", vtype_int, &proxy_target_port },
+#endif
{ "prvscheck_address", vtype_stringptr, &prvscheck_address },
{ "prvscheck_keynum", vtype_stringptr, &prvscheck_keynum },
{ "prvscheck_result", vtype_stringptr, &prvscheck_result },
{ "received_time", vtype_int, &received_time },
{ "recipient_data", vtype_stringptr, &recipient_data },
{ "recipient_verify_failure",vtype_stringptr,&recipient_verify_failure },
- { "recipients", vtype_recipients, NULL },
+ { "recipients", vtype_string_func, &fn_recipients },
{ "recipients_count", vtype_int, &recipients_count },
#ifdef WITH_CONTENT_SCAN
{ "regex_match_string", vtype_stringptr, ®ex_match_string },
{ "reply_address", vtype_reply, NULL },
{ "return_path", vtype_stringptr, &return_path },
{ "return_size_limit", vtype_int, &bounce_return_size_limit },
+ { "router_name", vtype_stringptr, &router_name },
{ "runrc", vtype_int, &runrc },
{ "self_hostname", vtype_stringptr, &self_hostname },
{ "sender_address", vtype_stringptr, &sender_address },
{ "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_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) && !defined(USE_GNUTLS)
+#if defined(SUPPORT_TLS)
{ "tls_in_sni", vtype_stringptr, &tls_in.sni },
#endif
{ "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 },
+ { "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) && !defined(USE_GNUTLS)
+#if defined(SUPPORT_TLS)
{ "tls_out_sni", vtype_stringptr, &tls_out.sni },
#endif
{ "tls_peerdn", vtype_stringptr, &tls_in.peerdn }, /* mind the alphabetical order! */
-#if defined(SUPPORT_TLS) && !defined(USE_GNUTLS)
+#if defined(SUPPORT_TLS)
{ "tls_sni", vtype_stringptr, &tls_in.sni }, /* mind the alphabetical order! */
#endif
{ "tod_logfile", vtype_todlf, NULL },
{ "tod_zone", vtype_todzone, NULL },
{ "tod_zulu", vtype_todzulu, NULL },
+#ifdef EXPERIMENTAL_TPDA
+ { "tpda_defer_errno", vtype_int, &tpda_defer_errno },
+ { "tpda_defer_errstr", vtype_stringptr, &tpda_defer_errstr },
+ { "tpda_delivery_confirmation", vtype_stringptr, &tpda_delivery_confirmation },
+ { "tpda_delivery_domain", vtype_stringptr, &tpda_delivery_domain },
+ { "tpda_delivery_fqdn", vtype_stringptr, &tpda_delivery_fqdn },
+ { "tpda_delivery_ip", vtype_stringptr, &tpda_delivery_ip },
+ { "tpda_delivery_local_part",vtype_stringptr,&tpda_delivery_local_part },
+ { "tpda_delivery_port", vtype_int, &tpda_delivery_port },
+#endif
+ { "transport_name", vtype_stringptr, &transport_name },
{ "value", vtype_stringptr, &lookup_value },
{ "version_number", vtype_stringptr, &version_string },
{ "warn_message_delay", vtype_stringptr, &warnmsg_delay },
/* This function is called to expand a string, and test the result for a "true"
or "false" value. Failure of the expansion yields FALSE; logged unless it was a
-forced fail or lookup defer. All store used by the function can be released on
-exit.
+forced fail or lookup defer.
+
+We used to release all store used, but this is not not safe due
+to ${dlfunc } and ${acl }. In any case expand_string_internal()
+is reasonably careful to release what it can.
The actual false-value tests should be replicated for ECOND_BOOL_LAX.
expand_check_condition(uschar *condition, uschar *m1, uschar *m2)
{
int rc;
-void *reset_point = store_get(0);
uschar *ss = expand_string(condition);
if (ss == NULL)
{
}
rc = ss[0] != 0 && Ustrcmp(ss, "0") != 0 && strcmpic(ss, US"no") != 0 &&
strcmpic(ss, US"false") != 0;
-store_reset(reset_point);
return rc;
}
+static var_entry *
+find_var_ent(uschar * name)
+{
+int first = 0;
+int last = var_table_size;
+
+while (last > first)
+ {
+ int middle = (first + last)/2;
+ int c = Ustrcmp(name, var_table[middle].name);
+
+ if (c > 0) { first = middle + 1; continue; }
+ if (c < 0) { last = middle; continue; }
+ return &var_table[middle];
+ }
+return NULL;
+}
/*************************************************
* Extract numbered subfield from string *
}
+static uschar *
+expand_getlistele(int field, uschar * list)
+{
+uschar * tlist= list;
+int sep= 0;
+uschar dummy;
+
+if(field<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))) ;
+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
+typedef struct
+{
+uschar * name;
+int namelen;
+uschar * (*getfn)(void * cert, uschar * mod);
+} certfield;
+static certfield certfields[] =
+{ /* linear search; no special order */
+ { US"version", 7, &tls_cert_version },
+ { US"serial_number", 13, &tls_cert_serial_number },
+ { US"subject", 7, &tls_cert_subject },
+ { US"notbefore", 9, &tls_cert_not_before },
+ { US"notafter", 8, &tls_cert_not_after },
+ { US"issuer", 6, &tls_cert_issuer },
+ { US"signature", 9, &tls_cert_signature },
+ { US"sig_algorithm", 13, &tls_cert_signature_algorithm },
+ { US"subj_altname", 12, &tls_cert_subject_altname },
+ { US"ocsp_uri", 8, &tls_cert_ocsp_uri },
+ { US"crl_uri", 7, &tls_cert_crl_uri },
+};
+
+static uschar *
+expand_getcertele(uschar * field, uschar * certvar)
+{
+var_entry * vp;
+certfield * cp;
+
+if (!(vp = find_var_ent(certvar)))
+ {
+ expand_string_message =
+ string_sprintf("no variable named \"%s\"", certvar);
+ return NULL; /* Unknown variable name */
+ }
+/* NB this stops us passing certs around in variable. Might
+want to do that in future */
+if (vp->type != vtype_cert)
+ {
+ expand_string_message =
+ string_sprintf("\"%s\" is not a certificate", certvar);
+ return NULL; /* Unknown variable name */
+ }
+if (!*(void **)vp->value)
+ return NULL;
+
+if (*field >= '0' && *field <= '9')
+ return tls_cert_ext_by_oid(*(void **)vp->value, field, 0);
+
+for(cp = certfields;
+ cp < certfields + nelements(certfields);
+ cp++)
+ if (Ustrncmp(cp->name, field, cp->namelen) == 0)
+ {
+ uschar * modifier = *(field += cp->namelen) == ','
+ ? ++field : NULL;
+ return (*cp->getfn)( *(void **)vp->value, modifier );
+ }
+
+expand_string_message =
+ string_sprintf("bad field selector \"%s\" for certextract", field);
+return NULL;
+}
+#endif /*SUPPORT_TLS*/
/*************************************************
* Extract a substring from a string *
+/*************************************************
+* Return list of recipients *
+*************************************************/
+/* A recipients list is available only during system message filtering,
+during ACL processing after DATA, and while expanding pipe commands
+generated from a system filter, but not elsewhere. */
+
+static uschar *
+fn_recipients(void)
+{
+if (!enable_dollar_recipients) return NULL; else
+ {
+ 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;
+ }
+}
+
+
/*************************************************
* Find value of a variable *
*************************************************/
static uschar *
find_variable(uschar *name, BOOL exists_only, BOOL skipping, int *newsize)
{
-int first = 0;
-int last = var_table_size;
+var_entry * vp;
+uschar *s, *domain;
+uschar **ss;
+void * val;
/* Handle ACL variables, whose names are of the form acl_cxxx or acl_mxxx.
Originally, xxx had to be a number in the range 0-9 (later 0-19), but from
/* For all other variables, search the table */
-while (last > first)
- {
- uschar *s, *domain;
- uschar **ss;
- int middle = (first + last)/2;
- int c = Ustrcmp(name, var_table[middle].name);
-
- if (c > 0) { first = middle + 1; continue; }
- if (c < 0) { last = middle; continue; }
+if (!(vp = find_var_ent(name)))
+ return NULL; /* Unknown variable name */
- /* Found an existing variable. If in skipping state, the value isn't needed,
- and we want to avoid processing (such as looking up the host name). */
+/* Found an existing variable. If in skipping state, the value isn't needed,
+and we want to avoid processing (such as looking up the host name). */
- if (skipping) return US"";
+if (skipping)
+ return US"";
- switch (var_table[middle].type)
+val = vp->value;
+switch (vp->type)
+ {
+ case vtype_filter_int:
+ if (!filter_running) return NULL;
+ /* Fall through */
+ /* VVVVVVVVVVVV */
+ case vtype_int:
+ 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;
+
+ case vtype_gid:
+ 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;
+
+ case vtype_bool:
+ 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;
+
+ case vtype_pid:
+ 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;
+
+ 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;
+
+ 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;
+
+ case vtype_domain: /* Get domain from address */
+ s = *((uschar **)(val));
+ if (s == NULL) return US"";
+ domain = Ustrrchr(s, '@');
+ return (domain == NULL)? US"" : domain + 1;
+
+ case vtype_msgheaders:
+ return find_header(NULL, exists_only, newsize, FALSE, NULL);
+
+ case vtype_msgheaders_raw:
+ return find_header(NULL, exists_only, newsize, TRUE, 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 */
{
- case vtype_filter_int:
- if (!filter_running) return NULL;
- /* Fall through */
- /* VVVVVVVVVVVV */
- case vtype_int:
- sprintf(CS var_buffer, "%d", *(int *)(var_table[middle].value)); /* Integer */
- return var_buffer;
-
- case vtype_ino:
- sprintf(CS var_buffer, "%ld", (long int)(*(ino_t *)(var_table[middle].value))); /* Inode */
- return var_buffer;
-
- case vtype_gid:
- sprintf(CS var_buffer, "%ld", (long int)(*(gid_t *)(var_table[middle].value))); /* gid */
- return var_buffer;
-
- case vtype_uid:
- sprintf(CS var_buffer, "%ld", (long int)(*(uid_t *)(var_table[middle].value))); /* uid */
- return var_buffer;
-
- case vtype_bool:
- sprintf(CS var_buffer, "%s", *(BOOL *)(var_table[middle].value) ? "yes" : "no"); /* bool */
- return var_buffer;
-
- case vtype_stringptr: /* Pointer to string */
- s = *((uschar **)(var_table[middle].value));
- return (s == NULL)? US"" : s;
-
- case vtype_pid:
- 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;
-
- 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;
-
- case vtype_localpart: /* Get local part from address */
- s = *((uschar **)(var_table[middle].value));
- 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;
-
- case vtype_domain: /* Get domain from address */
- s = *((uschar **)(var_table[middle].value));
- if (s == NULL) return US"";
- domain = Ustrrchr(s, '@');
- return (domain == NULL)? US"" : domain + 1;
-
- case vtype_msgheaders:
- return find_header(NULL, exists_only, newsize, FALSE, NULL);
-
- case vtype_msgheaders_raw:
- return find_header(NULL, exists_only, newsize, TRUE, NULL);
-
- case vtype_msgbody: /* Pointer to msgbody string */
- case vtype_msgbody_end: /* Ditto, the end of the msg */
- ss = (uschar **)(var_table[middle].value);
- 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)
{
- 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 (var_table[middle].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)
- {
- 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] = ' '; }
- }
- }
+ 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)
+ {
+ 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 == NULL)? US"" : *ss;
- case vtype_todbsdin: /* BSD inbox time of day */
- return tod_stamp(tod_bsdin);
+ case vtype_todbsdin: /* BSD inbox time of day */
+ return tod_stamp(tod_bsdin);
- case vtype_tode: /* Unix epoch time of day */
- return tod_stamp(tod_epoch);
+ case vtype_tode: /* Unix epoch time of day */
+ return tod_stamp(tod_epoch);
- case vtype_todel: /* Unix epoch/usec time of day */
- return tod_stamp(tod_epoch_l);
+ case vtype_todel: /* Unix epoch/usec time of day */
+ return tod_stamp(tod_epoch_l);
- case vtype_todf: /* Full time of day */
- return tod_stamp(tod_full);
+ case vtype_todf: /* Full time of day */
+ return tod_stamp(tod_full);
- case vtype_todl: /* Log format time of day */
- return tod_stamp(tod_log_bare); /* (without timezone) */
+ case vtype_todl: /* Log format time of day */
+ return tod_stamp(tod_log_bare); /* (without timezone) */
- case vtype_todzone: /* Time zone offset only */
- return tod_stamp(tod_zone);
+ case vtype_todzone: /* Time zone offset only */
+ return tod_stamp(tod_zone);
- case vtype_todzulu: /* Zulu time */
- return tod_stamp(tod_zulu);
+ case vtype_todzulu: /* Zulu time */
+ return tod_stamp(tod_zulu);
- case vtype_todlf: /* Log file datestamp tod */
- return tod_stamp(tod_log_datestamp_daily);
+ case vtype_todlf: /* Log file datestamp tod */
+ 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;
+ 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;
- /* A recipients list is available only during system message filtering,
- during ACL processing after DATA, and while expanding pipe commands
- generated from a system filter, but not elsewhere. */
+ case vtype_string_func:
+ {
+ uschar * (*fn)() = val;
+ return fn();
+ }
- case vtype_recipients:
- if (!enable_dollar_recipients) return NULL; else
- {
- int size = 128;
- int ptr = 0;
- int i;
- 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;
+ case vtype_pspace:
+ {
+ int inodes;
+ sprintf(CS var_buffer, "%d",
+ receive_statvfs(val == (void *)TRUE, &inodes));
+ }
+ return var_buffer;
- case vtype_pspace:
- {
- int inodes;
- sprintf(CS var_buffer, "%d",
- receive_statvfs(var_table[middle].value == (void *)TRUE, &inodes));
- }
- return var_buffer;
+ case vtype_pinodes:
+ {
+ int inodes;
+ (void) receive_statvfs(val == (void *)TRUE, &inodes);
+ sprintf(CS var_buffer, "%d", inodes);
+ }
+ return var_buffer;
- case vtype_pinodes:
- {
- int inodes;
- (void) receive_statvfs(var_table[middle].value == (void *)TRUE, &inodes);
- sprintf(CS var_buffer, "%d", inodes);
- }
- return var_buffer;
+ case vtype_cert:
+ return *(void **)val ? US"<cert>" : US"";
- #ifndef DISABLE_DKIM
- case vtype_dkim:
- return dkim_exim_expand_query((int)(long)var_table[middle].value);
- #endif
+ #ifndef DISABLE_DKIM
+ case vtype_dkim:
+ return dkim_exim_expand_query((int)(long)val);
+ #endif
- }
}
-
-return NULL; /* Unknown variable name */
}
void
modify_variable(uschar *name, void * value)
{
-int first = 0;
-int last = var_table_size;
-
-while (last > first)
- {
- int middle = (first + last)/2;
- int c = Ustrcmp(name, var_table[middle].name);
-
- if (c > 0) { first = middle + 1; continue; }
- if (c < 0) { last = middle; continue; }
-
- /* Found an existing variable; change the item it refers to */
- var_table[middle].value = value;
- return;
- }
+var_entry * vp;
+if ((vp = find_var_ent(name))) vp->value = value;
return; /* Unknown variable name, fail silently */
}
skipping the skipping flag
check_end if TRUE, check for final '}'
name name of item, for error message
+ resetok if not NULL, pointer to flag - write FALSE if unsafe to reset
+ the store.
Returns: 0 OK; string pointer updated
1 curly bracketing error (too few arguments)
static int
read_subs(uschar **sub, int n, int m, uschar **sptr, BOOL skipping,
- BOOL check_end, uschar *name)
+ BOOL check_end, uschar *name, BOOL *resetok)
{
int i;
uschar *s = *sptr;
sub[i] = NULL;
break;
}
- sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
+ sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, resetok);
if (sub[i] == NULL) return 3;
if (*s++ != '}') return 1;
while (isspace(*s)) s++;
+/*
+Load args from sub array to globals, and call acl_check().
+Sub array will be corrupted on return.
+
+Returns: OK access is granted by an ACCEPT verb
+ DISCARD access is granted by a DISCARD verb
+ FAIL access is denied
+ FAIL_DROP access is denied; drop the connection
+ DEFER can't tell at the moment
+ ERROR disaster
+*/
+static int
+eval_acl(uschar ** sub, int nsub, uschar ** user_msgp)
+{
+int i;
+uschar *tmp;
+int sav_narg = acl_narg;
+int ret;
+extern int acl_where;
+
+if(--nsub > sizeof(acl_arg)/sizeof(*acl_arg)) nsub = sizeof(acl_arg)/sizeof(*acl_arg);
+for (i = 0; i < nsub && sub[i+1]; i++)
+ {
+ tmp = acl_arg[i];
+ acl_arg[i] = sub[i+1]; /* place callers args in the globals */
+ sub[i+1] = tmp; /* stash the old args using our caller's storage */
+ }
+acl_narg = i;
+while (i < nsub)
+ {
+ sub[i+1] = acl_arg[i];
+ acl_arg[i++] = NULL;
+ }
+
+DEBUG(D_expand)
+ debug_printf("expanding: acl: %s arg: %s%s\n",
+ sub[0],
+ acl_narg>0 ? acl_arg[0] : US"<none>",
+ acl_narg>1 ? " +more" : "");
+
+ret = acl_eval(acl_where, sub[0], user_msgp, &tmp);
+
+for (i = 0; i < nsub; i++)
+ acl_arg[i] = sub[i+1]; /* restore old args */
+acl_narg = sav_narg;
+
+return ret;
+}
+
+
+
+
/*************************************************
* 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
*/
static uschar *
-eval_condition(uschar *s, BOOL *yield)
+eval_condition(uschar *s, BOOL *resetok, BOOL *yield)
{
BOOL testfor = TRUE;
BOOL tempcond, combined_cond;
int_eximarith_t num[2];
struct stat statbuf;
uschar name[256];
-uschar *sub[4];
+uschar *sub[10];
const pcre *re;
const uschar *rerror;
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;
case ECOND_PWCHECK:
while (isspace(*s)) s++;
- if (*s != '{') goto COND_FAILED_CURLY_START;
+ if (*s != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
- sub[0] = expand_string_internal(s+1, TRUE, &s, yield == NULL, TRUE);
+ sub[0] = expand_string_internal(s+1, TRUE, &s, yield == NULL, TRUE, resetok);
if (sub[0] == NULL) 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 */
return s;
+ /* call ACL (in a conditional context). Accept true, deny false.
+ Defer is a forced-fail. Anything set by message= goes to $value.
+ Up to ten parameters are used; we use the braces round the name+args
+ like the saslauthd condition does, to permit a variable number of args.
+ See also the expansion-item version EITEM_ACL and the traditional
+ acl modifier ACLC_ACL.
+ Since the ACL may allocate new global variables, tell our caller to not
+ reclaim memory.
+ */
+
+ case ECOND_ACL:
+ /* ${if acl {{name}{arg1}{arg2}...} {yes}{no}} */
+ {
+ uschar *user_msg;
+ BOOL cond = FALSE;
+ int size = 0;
+ int ptr = 0;
+
+ while (isspace(*s)) s++;
+ if (*s++ != '{') goto COND_FAILED_CURLY_START; /*}*/
+
+ switch(read_subs(sub, sizeof(sub)/sizeof(*sub), 1,
+ &s, yield == NULL, TRUE, US"acl", resetok))
+ {
+ case 1: expand_string_message = US"too few arguments or bracketing "
+ "error for acl";
+ case 2:
+ case 3: return NULL;
+ }
+
+ *resetok = FALSE;
+ if (yield != NULL) switch(eval_acl(sub, sizeof(sub)/sizeof(*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';
+ }
+ *yield = cond == testfor;
+ break;
+
+ case DEFER:
+ expand_string_forcedfail = TRUE;
+ default:
+ expand_string_message = string_sprintf("error from acl \"%s\"", sub[0]);
+ return NULL;
+ }
+ return s;
+ }
+
+
/* saslauthd: does Cyrus saslauthd authentication. Four parameters are used:
- ${if saslauthd {{username}{password}{service}{realm}} {yes}[no}}
+ ${if saslauthd {{username}{password}{service}{realm}} {yes}{no}}
However, the last two are optional. That is why the whole set is enclosed
- in their own set or braces. */
+ in their own set of braces. */
case ECOND_SASLAUTHD:
#ifndef CYRUS_SASLAUTHD_SOCKET
goto COND_FAILED_NOT_COMPILED;
#else
while (isspace(*s)) s++;
- if (*s++ != '{') goto COND_FAILED_CURLY_START;
- switch(read_subs(sub, 4, 2, &s, yield == NULL, TRUE, US"saslauthd"))
+ if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
+ switch(read_subs(sub, 4, 2, &s, yield == NULL, TRUE, US"saslauthd", resetok))
{
case 1: expand_string_message = US"too few arguments or bracketing "
"error for saslauthd";
return NULL;
}
sub[i] = expand_string_internal(s+1, TRUE, &s, yield == NULL,
- honour_dollar);
+ honour_dollar, resetok);
if (sub[i] == NULL) return NULL;
if (*s++ != '}') goto COND_FAILED_CURLY_END;
{
case ECOND_NUM_E:
case ECOND_NUM_EE:
- *yield = (num[0] == num[1]) == testfor;
+ tempcond = (num[0] == num[1]);
break;
case ECOND_NUM_G:
- *yield = (num[0] > num[1]) == testfor;
+ tempcond = (num[0] > num[1]);
break;
case ECOND_NUM_GE:
- *yield = (num[0] >= num[1]) == testfor;
+ tempcond = (num[0] >= num[1]);
break;
case ECOND_NUM_L:
- *yield = (num[0] < num[1]) == testfor;
+ tempcond = (num[0] < num[1]);
break;
case ECOND_NUM_LE:
- *yield = (num[0] <= num[1]) == testfor;
+ tempcond = (num[0] <= num[1]);
break;
case ECOND_STR_LT:
- *yield = (Ustrcmp(sub[0], sub[1]) < 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) < 0);
break;
case ECOND_STR_LTI:
- *yield = (strcmpic(sub[0], sub[1]) < 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) < 0);
break;
case ECOND_STR_LE:
- *yield = (Ustrcmp(sub[0], sub[1]) <= 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) <= 0);
break;
case ECOND_STR_LEI:
- *yield = (strcmpic(sub[0], sub[1]) <= 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) <= 0);
break;
case ECOND_STR_EQ:
- *yield = (Ustrcmp(sub[0], sub[1]) == 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) == 0);
break;
case ECOND_STR_EQI:
- *yield = (strcmpic(sub[0], sub[1]) == 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) == 0);
break;
case ECOND_STR_GT:
- *yield = (Ustrcmp(sub[0], sub[1]) > 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) > 0);
break;
case ECOND_STR_GTI:
- *yield = (strcmpic(sub[0], sub[1]) > 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) > 0);
break;
case ECOND_STR_GE:
- *yield = (Ustrcmp(sub[0], sub[1]) >= 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) >= 0);
break;
case ECOND_STR_GEI:
- *yield = (strcmpic(sub[0], sub[1]) >= 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) >= 0);
break;
case ECOND_MATCH: /* Regular expression match */
"\"%s\": %s at offset %d", sub[1], rerror, roffset);
return NULL;
}
- *yield = regex_match_and_setup(re, sub[0], 0, -1) == testfor;
+ tempcond = regex_match_and_setup(re, sub[0], 0, -1);
break;
case ECOND_MATCH_ADDRESS: /* Match in an address list */
switch(rc)
{
case OK:
- *yield = testfor;
+ tempcond = TRUE;
break;
case FAIL:
- *yield = !testfor;
+ tempcond = FALSE;
break;
case DEFER:
/* Various "encrypted" comparisons. If the second string starts with
"{" then an encryption type is given. Default to crypt() or crypt16()
(build-time choice). */
+ /* }-for-text-editors */
case ECOND_CRYPTEQ:
#ifndef SUPPORT_CRYPTEQ
uschar *coded = auth_b64encode((uschar *)digest, 16);
DEBUG(D_auth) debug_printf("crypteq: using MD5+B64 hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+5);
- *yield = (Ustrcmp(coded, sub[1]+5) == 0) == testfor;
+ tempcond = (Ustrcmp(coded, sub[1]+5) == 0);
}
else if (sublen == 32)
{
coded[32] = 0;
DEBUG(D_auth) debug_printf("crypteq: using MD5+hex hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+5);
- *yield = (strcmpic(coded, sub[1]+5) == 0) == testfor;
+ tempcond = (strcmpic(coded, sub[1]+5) == 0);
}
else
{
DEBUG(D_auth) debug_printf("crypteq: length for MD5 not 24 or 32: "
"fail\n crypted=%s\n", sub[1]+5);
- *yield = !testfor;
+ tempcond = FALSE;
}
}
uschar *coded = auth_b64encode((uschar *)digest, 20);
DEBUG(D_auth) debug_printf("crypteq: using SHA1+B64 hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+6);
- *yield = (Ustrcmp(coded, sub[1]+6) == 0) == testfor;
+ tempcond = (Ustrcmp(coded, sub[1]+6) == 0);
}
else if (sublen == 40)
{
coded[40] = 0;
DEBUG(D_auth) debug_printf("crypteq: using SHA1+hex hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+6);
- *yield = (strcmpic(coded, sub[1]+6) == 0) == testfor;
+ tempcond = (strcmpic(coded, sub[1]+6) == 0);
}
else
{
DEBUG(D_auth) debug_printf("crypteq: length for SHA-1 not 28 or 40: "
"fail\n crypted=%s\n", sub[1]+6);
- *yield = !testfor;
+ tempcond = FALSE;
}
}
sub[1] += 9;
which = 2;
}
- else if (sub[1][0] == '{')
+ else if (sub[1][0] == '{') /* }-for-text-editors */
{
expand_string_message = string_sprintf("unknown encryption mechanism "
"in \"%s\"", sub[1]);
salt), force failure. Otherwise we get false positives: with an empty
string the yield of crypt() is an empty string! */
- *yield = (Ustrlen(sub[1]) < 2)? !testfor :
- (Ustrcmp(coded, sub[1]) == 0) == testfor;
+ tempcond = (Ustrlen(sub[1]) < 2)? FALSE :
+ (Ustrcmp(coded, sub[1]) == 0);
}
break;
#endif /* SUPPORT_CRYPTEQ */
case ECOND_INLISTI:
{
int sep = 0;
- BOOL found = FALSE;
uschar *save_iterate_item = iterate_item;
int (*compare)(const uschar *, const uschar *);
+ tempcond = FALSE;
if (cond_type == ECOND_INLISTI)
compare = strcmpic;
else
while ((iterate_item = string_nextinlist(&sub[1], &sep, NULL, 0)) != NULL)
if (compare(sub[0], iterate_item) == 0)
{
- found = TRUE;
+ tempcond = TRUE;
break;
}
iterate_item = save_iterate_item;
- *yield = found;
}
} /* Switch for comparison conditions */
+ *yield = tempcond == testfor;
return s; /* End of comparison conditions */
combined_cond = (cond_type == ECOND_AND);
while (isspace(*s)) s++;
- if (*s++ != '{') goto COND_FAILED_CURLY_START;
+ if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
for (;;)
{
while (isspace(*s)) s++;
+ /* {-for-text-editors */
if (*s == '}') break;
- if (*s != '{')
+ if (*s != '{') /* }-for-text-editors */
{
expand_string_message = string_sprintf("each subcondition "
"inside an \"%s{...}\" condition must be in its own {}", name);
return NULL;
}
- s = eval_condition(s+1, subcondptr);
- if (s == NULL)
+ if (!(s = eval_condition(s+1, resetok, subcondptr)))
{
expand_string_message = string_sprintf("%s inside \"%s{...}\" condition",
expand_string_message, name);
}
while (isspace(*s)) s++;
+ /* {-for-text-editors */
if (*s++ != '}')
{
+ /* {-for-text-editors */
expand_string_message = string_sprintf("missing } at end of condition "
"inside \"%s\" group", name);
return NULL;
uschar *save_iterate_item = iterate_item;
while (isspace(*s)) s++;
- if (*s++ != '{') goto COND_FAILED_CURLY_START;
- sub[0] = expand_string_internal(s, TRUE, &s, (yield == NULL), TRUE);
+ 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;
+ /* {-for-text-editors */
if (*s++ != '}') goto COND_FAILED_CURLY_END;
while (isspace(*s)) s++;
- if (*s++ != '{') goto COND_FAILED_CURLY_START;
+ if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
sub[1] = s;
"false" part). This allows us to find the end of the condition, because if
the list it empty, we won't actually evaluate the condition for real. */
- s = eval_condition(sub[1], NULL);
- if (s == NULL)
+ if (!(s = eval_condition(sub[1], resetok, NULL)))
{
expand_string_message = string_sprintf("%s inside \"%s\" condition",
expand_string_message, name);
}
while (isspace(*s)) s++;
+ /* {-for-text-editors */
if (*s++ != '}')
{
+ /* {-for-text-editors */
expand_string_message = string_sprintf("missing } at end of condition "
"inside \"%s\"", name);
return NULL;
while ((iterate_item = string_nextinlist(&sub[0], &sep, NULL, 0)) != NULL)
{
DEBUG(D_expand) debug_printf("%s: $item = \"%s\"\n", name, iterate_item);
- if (eval_condition(sub[1], &tempcond) == NULL)
+ if (!eval_condition(sub[1], resetok, &tempcond))
{
expand_string_message = string_sprintf("%s inside \"%s\" condition",
expand_string_message, name);
size_t len;
BOOL boolvalue = FALSE;
while (isspace(*s)) s++;
- if (*s != '{') goto COND_FAILED_CURLY_START;
+ if (*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))
+ switch(read_subs(sub_arg, 1, 1, &s, yield == NULL, FALSE, ourname, resetok))
{
case 1: expand_string_message = string_sprintf(
"too few arguments or bracketing error for %s",
be no maintenance burden from replicating it. */
if (len == 0)
boolvalue = FALSE;
- else if (Ustrspn(t, "0123456789") == len)
+ else if (*t == '-'
+ ? Ustrspn(t+1, "0123456789") == len-1
+ : Ustrspn(t, "0123456789") == len)
{
boolvalue = (Uatoi(t) == 0) ? FALSE : TRUE;
/* expand_check_condition only does a literal string "0" check */
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
+ resetok if not NULL, pointer to flag - write FALSE if unsafe to reset
+ the store.
Returns: 0 OK; lookup_value has been reset to save_lookup
1 expansion failed
static int
process_yesno(BOOL skipping, BOOL yes, uschar *save_lookup, uschar **sptr,
- uschar **yieldptr, int *sizeptr, int *ptrptr, uschar *type)
+ uschar **yieldptr, int *sizeptr, int *ptrptr, uschar *type, BOOL *resetok)
{
int rc = 0;
uschar *s = *sptr; /* Local value */
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);
+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;
while (isspace(*s)) s++;
if (*s == '{')
{
- sub2 = expand_string_internal(s+1, TRUE, &s, yes || skipping, TRUE);
+ 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;
* can just let the other invalid results occur otherwise, as they have
* until now. For this one case, we can coerce.
*/
- if (y == -1 && x == LLONG_MIN && op != '*')
+ if (y == -1 && x == EXIM_ARITH_MIN && op != '*')
{
DEBUG(D_expand)
debug_printf("Integer exception dodging: " PR_EXIM_ARITH "%c-1 coerced to " PR_EXIM_ARITH "\n",
- LLONG_MIN, op, LLONG_MAX);
- x = LLONG_MAX;
+ EXIM_ARITH_MIN, op, EXIM_ARITH_MAX);
+ x = EXIM_ARITH_MAX;
continue;
}
if (op == '*')
There's a problem if a ${dlfunc item has side-effects that cause allocation,
since resetting the store at the end of the expansion will free store that was
allocated by the plugin code as well as the slop after the expanded string. So
-we skip any resets if ${dlfunc has been used. This is an unfortunate
-consequence of string expansion becoming too powerful.
+we skip any resets if ${dlfunc } has been used. The same applies for ${acl }
+and, given the acl condition, ${if }. This is an unfortunate consequence of
+string expansion becoming too powerful.
Arguments:
string the string to be expanded
to be used (to allow for optimisation)
honour_dollar TRUE if $ is to be expanded,
FALSE if it's just another character
+ resetok_p if not NULL, pointer to flag - write FALSE if unsafe to reset
+ the store.
Returns: NULL if expansion fails:
expand_string_forcedfail is set TRUE if failure was forced
static uschar *
expand_string_internal(uschar *string, BOOL ket_ends, uschar **left,
- BOOL skipping, BOOL honour_dollar)
+ BOOL skipping, BOOL honour_dollar, BOOL *resetok_p)
{
int ptr = 0;
int size = Ustrlen(string)+ 64;
continue;
}
+ /*{*/
/* Anything other than $ is just copied verbatim, unless we are
looking for a terminating } character. */
+ /*{*/
if (ket_ends && *s == '}') break;
if (*s != '$' || !honour_dollar)
names can contain any printing characters except space and colon.
For those that don't like typing this much, "$h_" is a synonym for
"$header_". A non-existent header yields a NULL value; nothing is
- inserted. */
+ inserted. */ /*}*/
if (isalpha((*(++s))))
{
continue;
}
- /* Otherwise, if there's no '{' after $ it's an error. */
+ /* Otherwise, if there's no '{' after $ it's an error. */ /*}*/
- if (*s != '{')
+ if (*s != '{') /*}*/
{
- expand_string_message = US"$ not followed by letter, digit, or {";
+ expand_string_message = US"$ not followed by letter, digit, or {"; /*}*/
goto EXPAND_FAILED;
}
if (isdigit((*(++s))))
{
int n;
- s = read_number(&n, s);
+ s = read_number(&n, s); /*{*/
if (*s++ != '}')
- {
+ { /*{*/
expand_string_message = US"} expected after number";
goto EXPAND_FAILED;
}
if (!isalpha(*s))
{
- expand_string_message = US"letter or digit expected after ${";
+ expand_string_message = US"letter or digit expected after ${"; /*}*/
goto EXPAND_FAILED;
}
switch(item_type)
{
/* Call an ACL from an expansion. We feed data in via $acl_arg1 - $acl_arg9.
- If the ACL returns acceptance we return content set by "message ="
+ If the ACL returns accept or reject we return content set by "message ="
There is currently no limit on recursion; this would have us call
acl_check_internal() directly and get a current level from somewhere.
+ See also the acl expansion condition ECOND_ACL and the traditional
+ acl modifier ACLC_ACL.
+ Assume that the function has side-effects on the store that must be preserved.
*/
case EITEM_ACL:
+ /* ${acl {name} {arg1}{arg2}...} */
{
- int rc;
- uschar *sub[10]; /* name + arg1-arg9, must match number of acl_arg[] */
- uschar *new_yield;
+ uschar *sub[10]; /* name + arg1-arg9 (which must match number of acl_arg[]) */
uschar *user_msg;
- uschar *log_msg;
- switch(read_subs(sub, 10, 1, &s, skipping, TRUE, US"acl"))
+
+ switch(read_subs(sub, 10, 1, &s, skipping, TRUE, US"acl", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
}
if (skipping) continue;
- for (rc = 1; rc < sizeof(sub)/sizeof(*sub) && sub[rc]; rc++)
- acl_arg[rc-1] = sub[rc];
- acl_narg = rc-1;
- while (rc < sizeof(sub)/sizeof(*sub))
- acl_arg[rc++ - 1] = NULL;
-
- DEBUG(D_expand)
- debug_printf("expanding: acl: %s arg: %s%s\n",
- sub[0],
- acl_narg>0 ? sub[1] : US"<none>",
- acl_narg>1 ? " +more" : "");
-
- switch(rc = acl_check(ACL_WHERE_EXPANSION, NULL, sub[0], &user_msg, &log_msg))
+ resetok = FALSE;
+ switch(eval_acl(sub, sizeof(sub)/sizeof(*sub), &user_msg))
{
case OK:
+ case FAIL:
+ DEBUG(D_expand)
+ debug_printf("acl expansion yield: %s\n", user_msg);
if (user_msg)
yield = string_cat(yield, &size, &ptr, user_msg, Ustrlen(user_msg));
continue;
+
case DEFER:
- continue;
+ expand_string_forcedfail = TRUE;
default:
- expand_string_message = string_sprintf("acl \"%s\" did not accept", sub[0]);
+ expand_string_message = string_sprintf("error from acl \"%s\"", sub[0]);
goto EXPAND_FAILED;
}
}
save_expand_strings(save_expand_nstring, save_expand_nlength);
while (isspace(*s)) s++;
- next_s = eval_condition(s, skipping? NULL : &cond);
+ next_s = eval_condition(s, &resetok, skipping? NULL : &cond);
if (next_s == NULL) goto EXPAND_FAILED; /* message already set */
DEBUG(D_expand)
&yield, /* output pointer */
&size, /* output size */
&ptr, /* output current point */
- US"if")) /* condition type */
+ US"if", /* condition type */
+ &resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
Otherwise set the key NULL pro-tem. */
while (isspace(*s)) s++;
- if (*s == '{')
+ if (*s == '{') /*}*/
{
- key = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
- if (key == NULL) goto EXPAND_FAILED;
+ 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++;
}
/* The type is a string that may contain special characters of various
kinds. Allow everything except space or { to appear; the actual content
- is checked by search_findtype_partial. */
+ is checked by search_findtype_partial. */ /*}*/
- while (*s != 0 && *s != '{' && !isspace(*s))
+ while (*s != 0 && *s != '{' && !isspace(*s)) /*}*/
{
if (nameptr < sizeof(name) - 1) name[nameptr++] = *s;
s++;
first. */
if (*s != '{') goto EXPAND_FAILED_CURLY;
- filename = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
+ 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++;
&yield, /* output pointer */
&size, /* output size */
&ptr, /* output current point */
- US"lookup")) /* condition type */
+ US"lookup", /* condition type */
+ &resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
case EITEM_PERL:
#ifndef EXIM_PERL
- expand_string_message = US"\"${perl\" encountered, but this facility "
+ expand_string_message = US"\"${perl\" encountered, but this facility " /*}*/
"is not included in this binary";
goto EXPAND_FAILED;
}
switch(read_subs(sub_arg, EXIM_PERL_MAX_ARGS + 1, 1, &s, skipping, TRUE,
- US"perl"))
+ US"perl", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
uschar *sub_arg[3];
uschar *p,*domain;
- switch(read_subs(sub_arg, 3, 2, &s, skipping, TRUE, US"prvs"))
+ switch(read_subs(sub_arg, 3, 2, &s, skipping, TRUE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
prvscheck_address = NULL;
prvscheck_keynum = NULL;
- switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs"))
+ switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
prvscheck_keynum = string_copy(key_num);
/* Now expand the second argument */
- switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs"))
+ switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
/* 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"))
+ switch(read_subs(sub_arg, 1, 0, &s, skipping, TRUE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
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"))
+ switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
goto EXPAND_FAILED;
}
- switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, US"readfile"))
+ switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, US"readfile", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
/* 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"))
+ switch(read_subs(sub_arg, 4, 2, &s, skipping, FALSE, US"readsocket", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2: /* Won't occur: no end check */
if (Ustrncmp(sub_arg[0], "inet:", 5) == 0)
{
- BOOL connected = FALSE;
- int namelen, port;
- host_item shost;
- host_item *h;
+ int port;
uschar *server_name = sub_arg[0] + 5;
uschar *port_name = Ustrrchr(server_name, ':');
port = ntohs(service_info->s_port);
}
- /* Sort out the server. */
-
- shost.next = NULL;
- shost.address = NULL;
- shost.port = port;
- shost.mx = -1;
-
- namelen = Ustrlen(server_name);
-
- /* Anything enclosed in [] must be an IP address. */
-
- if (server_name[0] == '[' &&
- server_name[namelen - 1] == ']')
- {
- server_name[namelen - 1] = 0;
- server_name++;
- if (string_is_ip_address(server_name, NULL) == 0)
- {
- expand_string_message =
- string_sprintf("malformed IP address \"%s\"", server_name);
- goto EXPAND_FAILED;
- }
- shost.name = shost.address = server_name;
- }
-
- /* Otherwise check for an unadorned IP address */
-
- else if (string_is_ip_address(server_name, NULL) != 0)
- shost.name = shost.address = server_name;
-
- /* Otherwise lookup IP address(es) from the name */
-
- else
- {
- shost.name = server_name;
- if (host_find_byname(&shost, NULL, HOST_FIND_QUALIFY_SINGLE, NULL,
- FALSE) != HOST_FOUND)
- {
- expand_string_message =
- string_sprintf("no IP address found for host %s", shost.name);
- goto EXPAND_FAILED;
- }
- }
-
- /* Try to connect to the server - test each IP till one works */
-
- for (h = &shost; h != NULL; h = h->next)
- {
- int af = (Ustrchr(h->address, ':') != 0)? AF_INET6 : AF_INET;
- if ((fd = ip_socket(SOCK_STREAM, af)) == -1)
- {
- expand_string_message = string_sprintf("failed to create socket: "
- "%s", strerror(errno));
+ if ((fd = ip_connectedsocket(SOCK_STREAM, server_name, port, port,
+ timeout, NULL, &expand_string_message)) < 0)
goto SOCK_FAIL;
- }
-
- if (ip_connect(fd, af, h->address, port, timeout) == 0)
- {
- connected = TRUE;
- break;
- }
- }
-
- if (!connected)
- {
- expand_string_message = string_sprintf("failed to connect to "
- "socket %s: couldn't connect to any host", sub_arg[0],
- strerror(errno));
- goto SOCK_FAIL;
- }
}
/* Handle a Unix domain socket */
DEBUG(D_expand) debug_printf("connected to socket %s\n", sub_arg[0]);
+ /* Allow sequencing of test actions */
+ if (running_in_test_harness) millisleep(100);
+
/* Write the request string, if not empty */
if (sub_arg[1][0] != 0)
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. */
if (*s == '{')
{
- if (expand_string_internal(s+1, TRUE, &s, TRUE, TRUE) == NULL)
+ if (expand_string_internal(s+1, TRUE, &s, TRUE, TRUE, &resetok) == NULL)
goto EXPAND_FAILED;
if (*s++ != '}') goto EXPAND_FAILED_CURLY;
while (isspace(*s)) s++;
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);
+ 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;
- arg = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
+ 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;
&yield, /* output pointer */
&size, /* output size */
&ptr, /* output current point */
- US"run")) /* condition type */
+ US"run", /* condition type */
+ &resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
int o2m;
uschar *sub[3];
- switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"tr"))
+ switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"tr", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
uschar *sub[3];
/* "length" takes only 2 arguments whereas the others take 2 or 3.
- Ensure that sub[2] is set in the ${length case. */
+ Ensure that sub[2] is set in the ${length } case. */
sub[2] = NULL;
switch(read_subs(sub, (item_type == EITEM_LENGTH)? 2:3, 2, &s, skipping,
- TRUE, name))
+ TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
uschar innerkey[MAX_HASHBLOCKLEN];
uschar outerkey[MAX_HASHBLOCKLEN];
- switch (read_subs(sub, 3, 3, &s, skipping, TRUE, name))
+ switch (read_subs(sub, 3, 3, &s, skipping, TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
- switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"sg"))
+ switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"sg", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
for (i = 0; i < j; i++)
{
while (isspace(*s)) s++;
- if (*s == '{')
+ if (*s == '{') /*}*/
{
- sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
- if (sub[i] == NULL) goto EXPAND_FAILED;
+ 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;
/* After removal of leading and trailing white space, the first
&yield, /* output pointer */
&size, /* output size */
&ptr, /* output current point */
- US"extract")) /* condition type */
+ US"extract", /* condition type */
+ &resetok))
+ {
+ case 1: goto EXPAND_FAILED; /* when all is well, the */
+ case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
+ }
+
+ /* All done - restore numerical variables. */
+
+ restore_expand_strings(save_expand_nmax, save_expand_nstring,
+ save_expand_nlength);
+
+ continue;
+ }
+
+ /* return the Nth item from a list */
+
+ case EITEM_LISTEXTRACT:
+ {
+ int i;
+ int field_number = 1;
+ uschar *save_lookup_value = lookup_value;
+ uschar *sub[2];
+ int save_expand_nmax =
+ save_expand_strings(save_expand_nstring, save_expand_nlength);
+
+ /* Read the field & list arguments */
+
+ for (i = 0; i < 2; i++)
+ {
+ while (isspace(*s)) s++;
+ if (*s != '{') /*}*/
+ 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;
+
+ /* After removal of leading and trailing white space, the first
+ argument must be numeric and nonempty. */
+
+ if (i == 0)
+ {
+ int len;
+ int x = 0;
+ uschar *p = sub[0];
+
+ while (isspace(*p)) p++;
+ sub[0] = p;
+
+ len = Ustrlen(p);
+ while (len > 0 && isspace(p[len-1])) len--;
+ p[len] = 0;
+
+ if (!*p && !skipping)
+ {
+ expand_string_message = US"first argument of \"listextract\" must "
+ "not be empty";
+ goto EXPAND_FAILED;
+ }
+
+ if (*p == '-')
+ {
+ field_number = -1;
+ p++;
+ }
+ while (*p && isdigit(*p)) x = x * 10 + *p++ - '0';
+ if (*p)
+ {
+ expand_string_message = US"first argument of \"listextract\" must "
+ "be numeric";
+ goto EXPAND_FAILED;
+ }
+ field_number *= x;
+ }
+ }
+
+ /* Extract the numbered element into $value. If
+ skipping, just pretend the extraction failed. */
+
+ lookup_value = skipping? NULL : expand_getlistele(field_number, sub[1]);
+
+ /* If no string follows, $value gets substituted; otherwise there can
+ be yes/no strings, as for lookup or if. */
+
+ switch(process_yesno(
+ skipping, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ save_lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ &size, /* output size */
+ &ptr, /* output current point */
+ US"extract", /* condition type */
+ &resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
continue;
}
+#ifdef SUPPORT_TLS
+ case EITEM_CERTEXTRACT:
+ {
+ uschar *save_lookup_value = lookup_value;
+ uschar *sub[2];
+ int save_expand_nmax =
+ save_expand_strings(save_expand_nstring, save_expand_nlength);
+
+ /* Read the field argument */
+ while (isspace(*s)) s++;
+ if (*s != '{') /*}*/
+ goto EXPAND_FAILED_CURLY;
+ sub[0] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ if (!sub[0]) goto EXPAND_FAILED; /*{*/
+ if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ /* strip spaces fore & aft */
+ {
+ int len;
+ uschar *p = sub[0];
+
+ while (isspace(*p)) p++;
+ sub[0] = p;
+
+ len = Ustrlen(p);
+ while (len > 0 && isspace(p[len-1])) len--;
+ p[len] = 0;
+ }
+
+ /* inspect the cert argument */
+ while (isspace(*s)) s++;
+ if (*s != '{') /*}*/
+ goto EXPAND_FAILED_CURLY;
+ if (*++s != '$')
+ {
+ expand_string_message = US"second argument of \"certextract\" must "
+ "be a certificate variable";
+ goto EXPAND_FAILED;
+ }
+ 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 (skipping)
+ lookup_value = NULL;
+ else
+ {
+ lookup_value = expand_getcertele(sub[0], sub[1]);
+ if (*expand_string_message) goto EXPAND_FAILED;
+ }
+ switch(process_yesno(
+ skipping, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ 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 1: goto EXPAND_FAILED; /* when all is well, the */
+ case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
+ }
+
+ restore_expand_strings(save_expand_nmax, save_expand_nstring,
+ save_expand_nlength);
+ continue;
+ }
+#endif /*SUPPORT_TLS*/
/* Handle list operations */
while (isspace(*s)) s++;
if (*s++ != '{') goto EXPAND_FAILED_CURLY;
- list = expand_string_internal(s, TRUE, &s, skipping, TRUE);
+ list = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok);
if (list == NULL) goto EXPAND_FAILED;
if (*s++ != '}') goto EXPAND_FAILED_CURLY;
{
while (isspace(*s)) s++;
if (*s++ != '{') goto EXPAND_FAILED_CURLY;
- temp = expand_string_internal(s, TRUE, &s, skipping, TRUE);
+ temp = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok);
if (temp == NULL) goto EXPAND_FAILED;
lookup_value = temp;
if (*s++ != '}') goto EXPAND_FAILED_CURLY;
if (item_type == EITEM_FILTER)
{
- temp = eval_condition(expr, NULL);
+ temp = eval_condition(expr, &resetok, NULL);
if (temp != NULL) s = temp;
}
else
{
- temp = expand_string_internal(s, TRUE, &s, TRUE, TRUE);
+ temp = expand_string_internal(s, TRUE, &s, TRUE, TRUE, &resetok);
}
if (temp == NULL)
while (isspace(*s)) s++;
if (*s++ != '}')
- {
+ { /*{*/
expand_string_message = string_sprintf("missing } at end of condition "
"or expression inside \"%s\"", name);
goto EXPAND_FAILED;
}
- while (isspace(*s)) s++;
+ while (isspace(*s)) s++; /*{*/
if (*s++ != '}')
- {
+ { /*{*/
expand_string_message = string_sprintf("missing } at end of \"%s\"",
name);
goto EXPAND_FAILED;
if (item_type == EITEM_FILTER)
{
BOOL condresult;
- if (eval_condition(expr, &condresult) == NULL)
+ if (eval_condition(expr, &resetok, &condresult) == NULL)
{
iterate_item = save_iterate_item;
lookup_value = save_lookup_value;
else
{
- temp = expand_string_internal(expr, TRUE, NULL, skipping, TRUE);
+ temp = expand_string_internal(expr, TRUE, NULL, skipping, TRUE, &resetok);
if (temp == NULL)
{
iterate_item = save_iterate_item;
}
- /* If ${dlfunc support is configured, handle calling dynamically-loaded
+ /* If ${dlfunc } support is configured, handle calling dynamically-loaded
functions, unless locked out at this time. Syntax is ${dlfunc{file}{func}}
or ${dlfunc{file}{func}{arg}} or ${dlfunc{file}{func}{arg1}{arg2}} or up to
a maximum of EXPAND_DLFUNC_MAX_ARGS arguments (defined below). */
case EITEM_DLFUNC:
#ifndef EXPAND_DLFUNC
- expand_string_message = US"\"${dlfunc\" encountered, but this facility "
+ expand_string_message = US"\"${dlfunc\" encountered, but this facility " /*}*/
"is not included in this binary";
goto EXPAND_FAILED;
}
switch(read_subs(argv, EXPAND_DLFUNC_MAX_ARGS + 2, 2, &s, skipping,
- TRUE, US"dlfunc"))
+ TRUE, US"dlfunc", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
}
}
#endif /* EXPAND_DLFUNC */
- }
+ } /* EITEM_* switch */
/* Control reaches here if the name is not recognized as one of the more
complicated expansion items. Check for the "operator" syntax (name terminated
{
int c;
uschar *arg = NULL;
- uschar *sub = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
- if (sub == NULL) goto EXPAND_FAILED;
- s++;
+ uschar *sub;
+ var_entry *vp = NULL;
/* Owing to an historical mis-design, an underscore may be part of the
operator name, or it may introduce arguments. We therefore first scan the
table of names that contain underscores. If there is no match, we cut off
the arguments and then scan the main table. */
- c = chop_match(name, op_table_underscore,
- sizeof(op_table_underscore)/sizeof(uschar *));
-
- if (c < 0)
+ if ((c = chop_match(name, op_table_underscore,
+ sizeof(op_table_underscore)/sizeof(uschar *))) < 0)
{
arg = Ustrchr(name, '_');
if (arg != NULL) *arg = 0;
if (arg != NULL) *arg++ = '_'; /* Put back for error messages */
}
+ /* Deal specially with operators that might take a certificate variable
+ as we do not want to do the usual expansion. For most, expand the string.*/
+ switch(c)
+ {
+#ifdef SUPPORT_TLS
+ case EOP_MD5:
+ case EOP_SHA1:
+ case EOP_SHA256:
+ if (s[1] == '$')
+ {
+ 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 ((vp = find_var_ent(sub)) && vp->type == vtype_cert)
+ {
+ s = s1+1;
+ break;
+ }
+ vp = NULL;
+ }
+ /*FALLTHROUGH*/
+#endif
+ default:
+ sub = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ if (!sub) goto EXPAND_FAILED;
+ s++;
+ break;
+ }
+
/* If we are skipping, we don't need to perform the operation at all.
This matters for operations like "mask", because the data may not be
in the correct format when skipping. For example, the expression may test
case EOP_EXPAND:
{
- uschar *expanded = expand_string_internal(sub, FALSE, NULL, skipping, TRUE);
+ uschar *expanded = expand_string_internal(sub, FALSE, NULL, skipping, TRUE, &resetok);
if (expanded == NULL)
{
expand_string_message =
}
case EOP_MD5:
- {
- 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));
+#ifdef SUPPORT_TLS
+ if (vp && *(void **)vp->value)
+ {
+ uschar * cp = tls_cert_fprt_md5(*(void **)vp->value);
+ yield = string_cat(yield, &size, &ptr, cp, Ustrlen(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));
+ }
continue;
- }
case EOP_SHA1:
- {
- sha1 base;
- 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));
+#ifdef SUPPORT_TLS
+ if (vp && *(void **)vp->value)
+ {
+ uschar * cp = tls_cert_fprt_sha1(*(void **)vp->value);
+ yield = string_cat(yield, &size, &ptr, cp, Ustrlen(cp));
+ }
+ else
+#endif
+ {
+ sha1 base;
+ 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));
+ }
+ continue;
+
+ case EOP_SHA256:
+#ifdef SUPPORT_TLS
+ if (vp && *(void **)vp->value)
+ {
+ uschar * cp = tls_cert_fprt_sha256(*(void **)vp->value);
+ yield = string_cat(yield, &size, &ptr, cp, (int)Ustrlen(cp));
+ }
+ else
+#endif
+ expand_string_message = US"sha256 only supported for certificates";
continue;
- }
/* Convert hex encoding to base64 encoding */
continue;
}
+ /* Convert octets outside 0x21..0x7E to \xXX form */
+
+ case EOP_HEXQUOTE:
+ {
+ uschar *t = sub - 1;
+ while (*(++t) != 0)
+ {
+ if (*t < 0x21 || 0x7E < *t)
+ yield = string_cat(yield, &size, &ptr,
+ string_sprintf("\\x%02x", *t), 4);
+ else
+ yield = string_cat(yield, &size, &ptr, t, 1);
+ }
+ continue;
+ }
+
/* count the number of list elements */
case EOP_LISTCOUNT:
uschar * list;
int sep = 0;
uschar * item;
- uschar * suffix = "";
+ uschar * suffix = US"";
BOOL needsep = FALSE;
uschar buffer[256];
}
else switch(*arg) /* specific list-type version */
{
- case 'a': t = tree_search(addresslist_anchor, sub); suffix = "_a"; break;
- case 'd': t = tree_search(domainlist_anchor, sub); suffix = "_d"; break;
- case 'h': t = tree_search(hostlist_anchor, sub); suffix = "_h"; break;
- case 'l': t = tree_search(localpartlist_anchor, sub); suffix = "_l"; break;
+ case 'a': t = tree_search(addresslist_anchor, sub); suffix = US"_a"; break;
+ case 'd': t = tree_search(domainlist_anchor, sub); suffix = US"_d"; break;
+ 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");
goto EXPAND_FAILED;
if (*item == '+') /* list item is itself a named list */
{
uschar * sub = string_sprintf("${listnamed%s:%s}", suffix, item);
- item = expand_string_internal(sub, FALSE, NULL, FALSE, TRUE);
+ item = expand_string_internal(sub, FALSE, NULL, FALSE, TRUE, &resetok);
}
else if (sep != ':') /* item from non-colon-sep list, re-quote for colon list-separator */
{
if (*cp++ == ':') /* colon in a non-colon-sep list item, needs doubling */
{
yield = string_cat(yield, &size, &ptr, US"::", 2);
- item = cp;
+ item = (uschar *)cp;
}
else /* sep in item; should already be doubled; emit once */
{
yield = string_cat(yield, &size, &ptr, (uschar *)tok, 1);
if (*cp == sep) cp++;
- item = cp;
+ item = (uschar *)cp;
}
}
}
continue;
}
+ /* replace illegal UTF-8 sequences by replacement character */
+
+ #define UTF8_REPLACEMENT_CHAR US"?"
+
+ case EOP_UTF8CLEAN:
+ {
+ int seq_len, index = 0;
+ int bytes_left = 0;
+ uschar seq_buff[4]; /* accumulate utf-8 here */
+
+ while (*sub != 0)
+ {
+ int complete;
+ long codepoint;
+ uschar c;
+
+ complete = 0;
+ c = *sub++;
+ if (bytes_left)
+ {
+ if ((c & 0xc0) != 0x80)
+ {
+ /* wrong continuation byte; invalidate all bytes */
+ complete = 1; /* error */
+ }
+ else
+ {
+ codepoint = (codepoint << 6) | (c & 0x3f);
+ seq_buff[index++] = c;
+ if (--bytes_left == 0) /* codepoint complete */
+ {
+ if(codepoint > 0x10FFFF) /* is it too large? */
+ complete = -1; /* error */
+ else
+ { /* finished; output utf-8 sequence */
+ yield = string_cat(yield, &size, &ptr, seq_buff, seq_len);
+ index = 0;
+ }
+ }
+ }
+ }
+ else /* no bytes left: new sequence */
+ {
+ if((c & 0x80) == 0) /* 1-byte sequence, US-ASCII, keep it */
+ {
+ yield = string_cat(yield, &size, &ptr, &c, 1);
+ continue;
+ }
+ if((c & 0xe0) == 0xc0) /* 2-byte sequence */
+ {
+ if(c == 0xc0 || c == 0xc1) /* 0xc0 and 0xc1 are illegal */
+ complete = -1;
+ else
+ {
+ bytes_left = 1;
+ codepoint = c & 0x1f;
+ }
+ }
+ else if((c & 0xf0) == 0xe0) /* 3-byte sequence */
+ {
+ bytes_left = 2;
+ codepoint = c & 0x0f;
+ }
+ else if((c & 0xf8) == 0xf0) /* 4-byte sequence */
+ {
+ bytes_left = 3;
+ codepoint = c & 0x07;
+ }
+ else /* invalid or too long (RFC3629 allows only 4 bytes) */
+ complete = -1;
+
+ seq_buff[index++] = c;
+ seq_len = bytes_left + 1;
+ } /* if(bytes_left) */
+
+ if (complete != 0)
+ {
+ bytes_left = index = 0;
+ yield = string_cat(yield, &size, &ptr, UTF8_REPLACEMENT_CHAR, 1);
+ }
+ if ((complete == 1) && ((c & 0x80) == 0))
+ { /* ASCII character follows incomplete sequence */
+ yield = string_cat(yield, &size, &ptr, &c, 1);
+ }
+ }
+ continue;
+ }
+
/* escape turns all non-printing characters into escape sequences. */
case EOP_ESCAPE:
store instead of copying. Many expansion strings contain just one reference,
so this is a useful optimization, especially for humungous headers
($message_headers). */
-
+ /*{*/
if (*s++ == '}')
{
int len;
will be optimal store usage. */
if (resetok) store_reset(yield + ptr + 1);
+else if (resetok_p) *resetok_p = FALSE;
+
DEBUG(D_expand)
{
debug_printf("expanding: %.*s\n result: %s\n", (int)(s - string), 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;
return NULL;
}
search_find_defer = FALSE;
malformed_header = FALSE;
return (Ustrpbrk(string, "$\\") == NULL)? string :
- expand_string_internal(string, FALSE, NULL, FALSE, TRUE);
+ expand_string_internal(string, FALSE, NULL, FALSE, TRUE, NULL);
}
default:
break;
case 'k':
- if (value > LLONG_MAX/1024 || value < LLONG_MIN/1024) errno = ERANGE;
+ if (value > EXIM_ARITH_MAX/1024 || value < EXIM_ARITH_MIN/1024) errno = ERANGE;
else value *= 1024;
endptr++;
break;
case 'm':
- if (value > LLONG_MAX/(1024*1024) || value < LLONG_MIN/(1024*1024)) errno = ERANGE;
+ if (value > EXIM_ARITH_MAX/(1024*1024) || value < EXIM_ARITH_MIN/(1024*1024)) errno = ERANGE;
else value *= 1024*1024;
endptr++;
break;
case 'g':
- if (value > LLONG_MAX/(1024*1024*1024) || value < LLONG_MIN/(1024*1024*1024)) errno = ERANGE;
+ if (value > EXIM_ARITH_MAX/(1024*1024*1024) || value < EXIM_ARITH_MIN/(1024*1024*1024)) errno = ERANGE;
else value *= 1024*1024*1024;
endptr++;
break;
else
{
while (isspace(*endptr)) endptr++;
- if (*endptr == 0) return (int)value;
+ if (*endptr == 0) return value;
}
}
#ifdef LOOKUP_PGSQL
pgsql_servers = argv[i];
#endif
+ #ifdef EXPERIMENTAL_REDIS
+ redis_servers = argv[i];
+ #endif
}
#ifdef EXIM_PERL
else opt_perl_startup = argv[i];
#endif
+/* vi: aw ai sw=2
+*/
/* End of expand.c */
projects / exim.git / blobdiff