* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2012 */
+/* Copyright (c) University of Cambridge 1995 - 2016 */
/* See the file NOTICE for conditions of use and distribution. */
#include "exim.h"
+#ifdef USE_GNUTLS
+# include <gnutls/gnutls.h>
+# if GNUTLS_VERSION_NUMBER < 0x030103 && !defined(DISABLE_OCSP)
+# define DISABLE_OCSP
+# endif
+#endif
+
extern void init_lookup_list(void);
+/*************************************************
+* Enums for cmdline interface *
+*************************************************/
+
+enum commandline_info { CMDINFO_NONE=0,
+ CMDINFO_HELP, CMDINFO_SIEVE, CMDINFO_DSCP };
+
+
+
+
/*************************************************
* Compile regular expression and panic on fail *
*************************************************/
*/
const pcre *
-regex_must_compile(uschar *pattern, BOOL caseless, BOOL use_malloc)
+regex_must_compile(const uschar *pattern, BOOL caseless, BOOL use_malloc)
{
int offset;
int options = PCRE_COPT;
pcre_free = function_store_free;
}
if (caseless) options |= PCRE_CASELESS;
-yield = pcre_compile(CS pattern, options, (const char **)&error, &offset, NULL);
+yield = pcre_compile(CCS pattern, options, (const char **)&error, &offset, NULL);
pcre_malloc = function_store_get;
pcre_free = function_dummy_free;
if (yield == NULL)
*/
BOOL
-regex_match_and_setup(const pcre *re, uschar *subject, int options, int setup)
+regex_match_and_setup(const pcre *re, const uschar *subject, int options, int setup)
{
int ovector[3*(EXPAND_MAXN+1)];
-int n = pcre_exec(re, NULL, CS subject, Ustrlen(subject), 0,
+uschar * s = string_copy(subject); /* de-constifying */
+int n = pcre_exec(re, NULL, CS s, Ustrlen(s), 0,
PCRE_EOPT | options, ovector, sizeof(ovector)/sizeof(int));
BOOL yield = n >= 0;
if (n == 0) n = EXPAND_MAXN + 1;
expand_nmax = (setup < 0)? 0 : setup + 1;
for (nn = (setup < 0)? 0 : 2; nn < n*2; nn += 2)
{
- expand_nstring[expand_nmax] = subject + ovector[nn];
+ expand_nstring[expand_nmax] = s + ovector[nn];
expand_nlength[expand_nmax++] = ovector[nn+1] - ovector[nn];
}
expand_nmax--;
when a bug in a function that calls milliwait() caused it to pass invalid data.
That's when I added the check. :-)
+We assume it to be not worth sleeping for under 100us; this value will
+require revisiting as hardware advances. This avoids the issue of
+a zero-valued timer setting meaning "never fire".
+
Argument: an itimerval structure containing the interval
Returns: nothing
*/
{
sigset_t sigmask;
sigset_t old_sigmask;
+
+if (itval->it_value.tv_usec < 100 && itval->it_value.tv_sec == 0)
+ return;
(void)sigemptyset(&sigmask); /* Empty mask */
(void)sigaddset(&sigmask, SIGALRM); /* Add SIGALRM */
(void)sigprocmask(SIG_BLOCK, &sigmask, &old_sigmask); /* Block SIGALRM */
{
if (!running_in_test_harness)
{
- debug_printf("tick check: %lu.%06lu %lu.%06lu\n",
- then_tv->tv_sec, then_tv->tv_usec, now_tv.tv_sec, now_tv.tv_usec);
- debug_printf("waiting %lu.%06lu\n", itval.it_value.tv_sec,
- itval.it_value.tv_usec);
+ debug_printf("tick check: " TIME_T_FMT ".%06lu " TIME_T_FMT ".%06lu\n",
+ then_tv->tv_sec, (long) then_tv->tv_usec,
+ now_tv.tv_sec, (long) now_tv.tv_usec);
+ debug_printf("waiting " TIME_T_FMT ".%06lu\n",
+ itval.it_value.tv_sec, (long) itval.it_value.tv_usec);
}
}
if (smtp_input)
{
#ifdef SUPPORT_TLS
- tls_close(FALSE); /* Shut down the TLS library */
+ tls_close(TRUE, FALSE); /* Shut down the TLS library */
#endif
(void)close(fileno(smtp_in));
(void)close(fileno(smtp_out));
#ifndef DISABLE_DKIM
fprintf(f, " DKIM");
#endif
-#ifdef WITH_OLD_DEMIME
- fprintf(f, " Old_Demime");
+#ifndef DISABLE_DNSSEC
+ fprintf(f, " DNSSEC");
+#endif
+#ifndef DISABLE_EVENT
+ fprintf(f, " Event");
+#endif
+#ifdef SUPPORT_I18N
+ fprintf(f, " I18N");
+#endif
+#ifndef DISABLE_OCSP
+ fprintf(f, " OCSP");
+#endif
+#ifndef DISABLE_PRDR
+ fprintf(f, " PRDR");
+#endif
+#ifdef SUPPORT_PROXY
+ fprintf(f, " PROXY");
+#endif
+#ifdef SUPPORT_SOCKS
+ fprintf(f, " SOCKS");
#endif
#ifdef EXPERIMENTAL_SPF
fprintf(f, " Experimental_SPF");
#ifdef EXPERIMENTAL_BRIGHTMAIL
fprintf(f, " Experimental_Brightmail");
#endif
+#ifdef EXPERIMENTAL_DANE
+ fprintf(f, " Experimental_DANE");
+#endif
#ifdef EXPERIMENTAL_DCC
fprintf(f, " Experimental_DCC");
#endif
+#ifdef EXPERIMENTAL_DMARC
+ fprintf(f, " Experimental_DMARC");
+#endif
+#ifdef EXPERIMENTAL_DSN_INFO
+ fprintf(f, " Experimental_DSN_info");
+#endif
fprintf(f, "\n");
fprintf(f, "Lookups (built-in):");
#if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2
fprintf(f, " pgsql");
#endif
+#if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2
+ fprintf(f, " redis");
+#endif
#if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2
fprintf(f, " sqlite");
#endif
#ifdef AUTH_SPA
fprintf(f, " spa");
#endif
+#ifdef AUTH_TLS
+ fprintf(f, " tls");
+#endif
fprintf(f, "\n");
fprintf(f, "Routers:");
#ifdef SUPPORT_TLS
tls_version_report(f);
#endif
+#ifdef SUPPORT_I18N
+ utf8_version_report(f);
+#endif
- for (authi = auths_available; *authi->driver_name != '\0'; ++authi) {
- if (authi->version_report) {
+ for (authi = auths_available; *authi->driver_name != '\0'; ++authi)
+ if (authi->version_report)
(*authi->version_report)(f);
- }
- }
+ /* PCRE_PRERELEASE is either defined and empty or a bare sequence of
+ characters; unless it's an ancient version of PCRE in which case it
+ is not defined. */
+#ifndef PCRE_PRERELEASE
+#define PCRE_PRERELEASE
+#endif
+#define QUOTE(X) #X
+#define EXPAND_AND_QUOTE(X) QUOTE(X)
fprintf(f, "Library version: PCRE: Compile: %d.%d%s\n"
" Runtime: %s\n",
PCRE_MAJOR, PCRE_MINOR,
- /* PRE_PRERELEASE is either defined and empty or a string.
- * unless its an ancient version of PCRE in which case it
- * is not defined */
-#ifdef PCRE_PRERELEASE
-# define STRINGIFY(x) #x
- STRINGIFY(PCRE_PRERELEASE) "",
-# undef STRINGIFY
-#else
- "",
-#endif
+ EXPAND_AND_QUOTE(PCRE_PRERELEASE) "",
pcre_version());
+#undef QUOTE
+#undef EXPAND_AND_QUOTE
init_lookup_list();
for (i = 0; i < lookup_list_count; i++)
- {
if (lookup_list[i]->version_report)
lookup_list[i]->version_report(f);
- }
#ifdef WHITELIST_D_MACROS
fprintf(f, "WHITELIST_D_MACROS: \"%s\"\n", WHITELIST_D_MACROS);
}
+/*************************************************
+* Show auxiliary information about Exim *
+*************************************************/
+
+static void
+show_exim_information(enum commandline_info request, FILE *stream)
+{
+const uschar **pp;
+
+switch(request)
+ {
+ case CMDINFO_NONE:
+ fprintf(stream, "Oops, something went wrong.\n");
+ return;
+ case CMDINFO_HELP:
+ fprintf(stream,
+"The -bI: flag takes a string indicating which information to provide.\n"
+"If the string is not recognised, you'll get this help (on stderr).\n"
+"\n"
+" exim -bI:help this information\n"
+" exim -bI:dscp dscp value keywords known\n"
+" exim -bI:sieve list of supported sieve extensions, one per line.\n"
+);
+ return;
+ case CMDINFO_SIEVE:
+ for (pp = exim_sieve_extension_list; *pp; ++pp)
+ fprintf(stream, "%s\n", *pp);
+ return;
+ case CMDINFO_DSCP:
+ dscp_list_to_stream(stream);
+ return;
+ }
+}
/*************************************************
if (!needs_quote) return lpart;
size = ptr = 0;
-yield = string_cat(NULL, &size, &ptr, US"\"", 1);
+yield = string_catn(NULL, &size, &ptr, US"\"", 1);
for (;;)
{
uschar *nq = US Ustrpbrk(lpart, "\\\"");
if (nq == NULL)
{
- yield = string_cat(yield, &size, &ptr, lpart, Ustrlen(lpart));
+ yield = string_cat(yield, &size, &ptr, lpart);
break;
}
- yield = string_cat(yield, &size, &ptr, lpart, nq - lpart);
- yield = string_cat(yield, &size, &ptr, US"\\", 1);
- yield = string_cat(yield, &size, &ptr, nq, 1);
+ yield = string_catn(yield, &size, &ptr, lpart, nq - lpart);
+ yield = string_catn(yield, &size, &ptr, US"\\", 1);
+ yield = string_catn(yield, &size, &ptr, nq, 1);
lpart = nq + 1;
}
-yield = string_cat(yield, &size, &ptr, US"\"", 1);
+yield = string_catn(yield, &size, &ptr, US"\"", 1);
yield[ptr] = 0;
return yield;
}
while (p < ss && isspace(*p)) p++; /* leading space after cont */
}
- yield = string_cat(yield, &size, &ptr, p, ss - p);
+ yield = string_catn(yield, &size, &ptr, p, ss - p);
#ifdef USE_READLINE
if (fn_readline != NULL) free(readline_line);
#endif
+ /* yield can only be NULL if ss==p */
if (ss == p || yield[ptr-1] != '\\')
{
- yield[ptr] = 0;
+ if (yield) yield[ptr] = 0;
break;
}
yield[--ptr] = 0;
BOOL count_queue = FALSE;
BOOL expansion_test = FALSE;
BOOL extract_recipients = FALSE;
+BOOL flag_G = FALSE;
+BOOL flag_n = FALSE;
BOOL forced_delivery = FALSE;
BOOL f_end_dot = FALSE;
BOOL deliver_give_up = FALSE;
BOOL list_queue = FALSE;
BOOL list_options = FALSE;
+BOOL list_config = FALSE;
BOOL local_queue_only;
BOOL more = TRUE;
BOOL one_msg_action = FALSE;
BOOL version_printed = FALSE;
uschar *alias_arg = NULL;
uschar *called_as = US"";
+uschar *cmdline_syslog_name = NULL;
uschar *start_queue_run_id = NULL;
uschar *stop_queue_run_id = NULL;
uschar *expansion_test_message = NULL;
uschar *ftest_localpart = NULL;
uschar *ftest_prefix = NULL;
uschar *ftest_suffix = NULL;
+uschar *log_oneline = NULL;
uschar *malware_test_file = NULL;
uschar *real_sender_address;
uschar *originator_home = US"/";
+size_t sz;
void *reset_point;
struct passwd *pw;
int passed_qr_pipe = -1;
gid_t group_list[NGROUPS_MAX];
+/* For the -bI: flag */
+enum commandline_info info_flag = CMDINFO_NONE;
+BOOL info_stdout = FALSE;
+
/* Possible options for -R and -S */
static uschar *rsopts[] = { US"f", US"ff", US"r", US"rf", US"rff" };
}
#endif
-/* In the Cygwin environment, some initialization needs doing. It is fudged
-in by means of this macro. */
+/* In the Cygwin environment, some initialization used to need doing.
+It was fudged in by means of this macro; now no longer but we'll leave
+it in case of others. */
#ifdef OS_INIT
OS_INIT
exit(EXIT_FAILURE);
}
+/* Initialize the default log options. */
+
+bits_set(log_selector, log_selector_size, log_default);
+
/* Set log_stderr to stderr, provided that stderr exists. This gets reset to
NULL when the daemon is run and the file is closed. We have to use this
indirection, because some systems don't allow writing to the variable "stderr".
regex_must_compile(US"^[A-Za-z0-9_/.-]*$", FALSE, TRUE);
#endif
+for (i = 0; i < REGEX_VARS; i++) regex_vars[i] = NULL;
/* If the program is called as "mailq" treat it as equivalent to "exim -bp";
this seems to be a generally accepted convention, since one finds symbolic
switch(switchchar)
{
+
+ /* sendmail uses -Ac and -Am to control which .cf file is used;
+ we ignore them. */
+ case 'A':
+ if (*argrest == '\0') { badarg = TRUE; break; }
+ else
+ {
+ BOOL ignore = FALSE;
+ switch (*argrest)
+ {
+ case 'c':
+ case 'm':
+ if (*(argrest + 1) == '\0')
+ ignore = TRUE;
+ break;
+ }
+ if (!ignore) { badarg = TRUE; break; }
+ }
+ break;
+
/* -Btype is a sendmail option for 7bit/8bit setting. Exim is 8-bit clean
so has no need of it. */
else if (*argrest == 'F')
{
- filter_test |= FTEST_SYSTEM;
+ filter_test |= checking = FTEST_SYSTEM;
if (*(++argrest) != 0) { badarg = TRUE; break; }
if (++i < argc) filter_test_sfile = argv[i]; else
{
{
if (*(++argrest) == 0)
{
- filter_test |= FTEST_USER;
+ filter_test |= checking = FTEST_USER;
if (++i < argc) filter_test_ufile = argv[i]; else
{
fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]);
else if (Ustrcmp(argrest, "i") == 0) bi_option = TRUE;
+ /* -bI: provide information, of the type to follow after a colon.
+ This is an Exim flag. */
+
+ else if (argrest[0] == 'I' && Ustrlen(argrest) >= 2 && argrest[1] == ':')
+ {
+ uschar *p = &argrest[2];
+ info_flag = CMDINFO_HELP;
+ if (Ustrlen(p))
+ {
+ if (strcmpic(p, CUS"sieve") == 0)
+ {
+ info_flag = CMDINFO_SIEVE;
+ info_stdout = TRUE;
+ }
+ else if (strcmpic(p, CUS"dscp") == 0)
+ {
+ info_flag = CMDINFO_DSCP;
+ info_stdout = TRUE;
+ }
+ else if (strcmpic(p, CUS"help") == 0)
+ {
+ info_stdout = TRUE;
+ }
+ }
+ }
+
/* -bm: Accept and deliver message - the default option. Reinstate
receiving_message, which got turned off for all -b options. */
else if (Ustrcmp(argrest, "malware") == 0)
{
if (++i >= argc) { badarg = TRUE; break; }
+ checking = TRUE;
malware_test_file = argv[i];
}
else if (Ustrcmp(argrest, "P") == 0)
{
- list_options = TRUE;
- debug_selector |= D_v;
- debug_file = stderr;
+ /* -bP config: we need to setup here, because later,
+ * when list_options is checked, the config is read already */
+ if (argv[i+1] && Ustrcmp(argv[i+1], "config") == 0)
+ {
+ list_config = TRUE;
+ readconf_save_config(version_string);
+ }
+ else
+ {
+ list_options = TRUE;
+ debug_selector |= D_v;
+ debug_file = stderr;
+ }
}
/* -brt: Test retry configuration lookup */
else if (Ustrcmp(argrest, "rt") == 0)
{
+ checking = TRUE;
test_retry_arg = i + 1;
goto END_ARG;
}
else if (Ustrcmp(argrest, "rw") == 0)
{
+ checking = TRUE;
test_rewrite_arg = i + 1;
goto END_ARG;
}
printf("%s\n", CS version_copyright);
version_printed = TRUE;
show_whats_supported(stdout);
+ log_testing_mode = TRUE;
}
/* -bw: inetd wait mode, accept a listening socket as stdin */
if (nr_configs)
{
int sep = 0;
- uschar *list = argrest;
+ const uschar *list = argrest;
uschar *filename;
while (trusted_config && (filename = string_nextinlist(&list,
&sep, big_buffer, big_buffer_size)) != NULL)
argrest++;
}
if (*argrest != 0)
- decode_bits(&selector, NULL, D_memory, 0, argrest, debug_options,
- debug_options_count, US"debug", 0);
+ decode_bits(&selector, 1, debug_notall, argrest,
+ debug_options, debug_options_count, US"debug", 0);
debug_selector = selector;
}
break;
case 'f':
{
- int start, end;
+ int dummy_start, dummy_end;
uschar *errmess;
if (*argrest == 0)
{
{ badarg = TRUE; break; }
}
if (*argrest == 0)
- {
sender_address = string_sprintf(""); /* Ensure writeable memory */
- }
else
{
uschar *temp = argrest + Ustrlen(argrest) - 1;
if (temp >= argrest && *temp == '.') f_end_dot = TRUE;
allow_domain_literals = TRUE;
strip_trailing_dot = TRUE;
- sender_address = parse_extract_address(argrest, &errmess, &start, &end,
- &sender_address_domain, TRUE);
+#ifdef SUPPORT_I18N
+ allow_utf8_domains = TRUE;
+#endif
+ sender_address = parse_extract_address(argrest, &errmess,
+ &dummy_start, &dummy_end, &sender_address_domain, TRUE);
+#ifdef SUPPORT_I18N
+ message_smtputf8 = string_is_utf8(sender_address);
+ allow_utf8_domains = FALSE;
+#endif
allow_domain_literals = FALSE;
strip_trailing_dot = FALSE;
if (sender_address == NULL)
}
break;
- /* This is some Sendmail thing which can be ignored */
+ /* -G: sendmail invocation to specify that it's a gateway submission and
+ sendmail may complain about problems instead of fixing them.
+ We make it equivalent to an ACL "control = suppress_local_fixups" and do
+ not at this time complain about problems. */
case 'G':
+ flag_G = TRUE;
break;
/* -h: Set the hop count for an incoming message. Exim does not currently
break;
+ /* -L: set the identifier used for syslog; equivalent to setting
+ syslog_processname in the config file, but needs to be an admin option. */
+
+ case 'L':
+ if (*argrest == '\0')
+ {
+ if(++i < argc) argrest = argv[i]; else
+ { badarg = TRUE; break; }
+ }
+ sz = Ustrlen(argrest);
+ if (sz > 32)
+ {
+ fprintf(stderr, "exim: the -L syslog name is too long: \"%s\"\n", argrest);
+ return EXIT_FAILURE;
+ }
+ if (sz < 1)
+ {
+ fprintf(stderr, "exim: the -L syslog name is too short\n");
+ return EXIT_FAILURE;
+ }
+ cmdline_syslog_name = argrest;
+ break;
+
case 'M':
receiving_message = FALSE;
break;
}
+ /* -MCD: set the smtp_use_dsn flag; this indicates that the host
+ that exim is connected to supports the esmtp extension DSN */
+ else if (Ustrcmp(argrest, "CD") == 0)
+ {
+ smtp_use_dsn = TRUE;
+ break;
+ }
+
/* -MCP: set the smtp_use_pipelining flag; this is useful only when
it preceded -MC (see above) */
break;
- /* -n: This means "don't alias" in sendmail, apparently. Just ignore
- it. */
+ /* -n: This means "don't alias" in sendmail, apparently.
+ For normal invocations, it has no effect.
+ It may affect some other options. */
case 'n':
+ flag_n = TRUE;
break;
/* -O: Just ignore it. In sendmail, apparently -O option=value means set
else if (Ustrcmp(argrest, "Mi") == 0) interface_address = argv[++i];
+ /* -oMm: Message reference */
+
+ else if (Ustrcmp(argrest, "Mm") == 0)
+ {
+ if (!mac_ismsgid(argv[i+1]))
+ {
+ fprintf(stderr,"-oMm must be a valid message ID\n");
+ exit(EXIT_FAILURE);
+ }
+ if (!trusted_config)
+ {
+ fprintf(stderr,"-oMm must be called by a trusted user/config\n");
+ exit(EXIT_FAILURE);
+ }
+ message_reference = argv[++i];
+ }
+
/* -oMr: Received protocol */
else if (Ustrcmp(argrest, "Mr") == 0) received_protocol = argv[++i];
/* -tls-on-connect: don't wait for STARTTLS (for old clients) */
#ifdef SUPPORT_TLS
- else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_on_connect = TRUE;
+ else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_in.on_connect = TRUE;
#endif
else badarg = TRUE;
if (*argrest != 0) badarg = TRUE;
break;
+ /* -X: in sendmail: takes one parameter, logfile, and sends debugging
+ logs to that file. We swallow the parameter and otherwise ignore it. */
+
+ case 'X':
+ if (*argrest == '\0')
+ if (++i >= argc)
+ {
+ fprintf(stderr, "exim: string expected after -X\n");
+ exit(EXIT_FAILURE);
+ }
+ break;
+
+ case 'z':
+ if (*argrest == '\0')
+ if (++i < argc) log_oneline = argv[i]; else
+ {
+ fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]);
+ exit(EXIT_FAILURE);
+ }
+ break;
+
/* All other initial characters are errors */
default:
This needs to happen before we read the main configuration. */
init_lookup_list();
+#ifdef SUPPORT_I18N
+if (running_in_test_harness) smtputf8_advertise_hosts = NULL;
+#endif
+
/* Read the main runtime configuration data; this gives up if there
is a failure. It leaves the configuration file open so that the subsequent
-configuration data for delivery can be read if needed. */
+configuration data for delivery can be read if needed.
+
+NOTE: immediatly after opening the configuration file we change the working
+directory to "/"! Later we change to $spool_directory. We do it there, because
+during readconf_main() some expansion takes place already. */
+
+/* Store the initial cwd before we change directories */
+if ((initial_cwd = os_getcwd(NULL, 0)) == NULL)
+ {
+ perror("exim: can't get the current working directory");
+ exit(EXIT_FAILURE);
+ }
+
+/* checking:
+ -be[m] expansion test -
+ -b[fF] filter test new
+ -bh[c] host test -
+ -bmalware malware_test_file new
+ -brt retry test new
+ -brw rewrite test new
+ -bt address test -
+ -bv[s] address verify -
+ list_options:
+ -bP <option> (except -bP config, which sets list_config)
+
+If any of these options is set, we suppress warnings about configuration
+issues (currently about tls_advertise_hosts and keep_environment not being
+defined) */
+
+readconf_main(checking || list_options);
-readconf_main();
+/* Now in directory "/" */
+
+if (cleanup_environment() == FALSE)
+ log_write(0, LOG_PANIC_DIE, "Can't cleanup environment");
+
+
+/* If an action on specific messages is requested, or if a daemon or queue
+runner is being started, we need to know if Exim was called by an admin user.
+This is the case if the real user is root or exim, or if the real group is
+exim, or if one of the supplementary groups is exim or a group listed in
+admin_groups. We don't fail all message actions immediately if not admin_user,
+since some actions can be performed by non-admin users. Instead, set admin_user
+for later interrogation. */
+
+if (real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid)
+ admin_user = TRUE;
+else
+ {
+ int i, j;
+ for (i = 0; i < group_count; i++)
+ {
+ if (group_list[i] == exim_gid) admin_user = TRUE;
+ else if (admin_groups != NULL)
+ {
+ for (j = 1; j <= (int)(admin_groups[0]); j++)
+ if (admin_groups[j] == group_list[i])
+ { admin_user = TRUE; break; }
+ }
+ if (admin_user) break;
+ }
+ }
+
+/* Another group of privileged users are the trusted users. These are root,
+exim, and any caller matching trusted_users or trusted_groups. Trusted callers
+are permitted to specify sender_addresses with -f on the command line, and
+other message parameters as well. */
+
+if (real_uid == root_uid || real_uid == exim_uid)
+ trusted_caller = TRUE;
+else
+ {
+ int i, j;
+
+ if (trusted_users != NULL)
+ {
+ for (i = 1; i <= (int)(trusted_users[0]); i++)
+ if (trusted_users[i] == real_uid)
+ { trusted_caller = TRUE; break; }
+ }
+
+ if (!trusted_caller && trusted_groups != NULL)
+ {
+ for (i = 1; i <= (int)(trusted_groups[0]); i++)
+ {
+ if (trusted_groups[i] == real_gid)
+ trusted_caller = TRUE;
+ else for (j = 0; j < group_count; j++)
+ {
+ if (trusted_groups[i] == group_list[j])
+ { trusted_caller = TRUE; break; }
+ }
+ if (trusted_caller) break;
+ }
+ }
+ }
/* Handle the decoding of logging options. */
-decode_bits(&log_write_selector, &log_extra_selector, 0, 0,
+decode_bits(log_selector, log_selector_size, log_notall,
log_selector_string, log_options, log_options_count, US"log", 0);
DEBUG(D_any)
{
+ int i;
debug_printf("configuration file is %s\n", config_main_filename);
- debug_printf("log selectors = %08x %08x\n", log_write_selector,
- log_extra_selector);
+ debug_printf("log selectors =");
+ for (i = 0; i < log_selector_size; i++)
+ debug_printf(" %08x", log_selector[i]);
+ debug_printf("\n");
}
/* If domain literals are not allowed, check the sender address that was
}
}
+/* See if an admin user overrode our logging. */
+
+if (cmdline_syslog_name != NULL)
+ {
+ if (admin_user)
+ {
+ syslog_processname = cmdline_syslog_name;
+ log_file_path = string_copy(CUS"syslog");
+ }
+ else
+ {
+ /* not a panic, non-privileged users should not be able to spam paniclog */
+ fprintf(stderr,
+ "exim: you lack sufficient privilege to specify syslog process name\n");
+ return EXIT_FAILURE;
+ }
+ }
+
/* Paranoia check of maximum lengths of certain strings. There is a check
on the length of the log file path in log.c, which will come into effect
if there are any calls to write the log earlier than this. However, if we
log_write(0, LOG_MAIN|LOG_PANIC_DIE,
"syslog_processname is longer than 32 chars: aborting");
+if (log_oneline)
+ {
+ if (admin_user)
+ {
+ log_write(0, LOG_MAIN, "%s", log_oneline);
+ return EXIT_SUCCESS;
+ }
+ else
+ return EXIT_FAILURE;
+ }
+
/* In some operating systems, the environment variable TMPDIR controls where
temporary files are created; Exim doesn't use these (apart from when delivering
to MBX mailboxes), but called libraries such as DBM libraries may require them.
If TMPDIR is found in the environment, reset it to the value defined in the
-TMPDIR macro, if this macro is defined. */
+EXIM_TMPDIR macro, if this macro is defined. For backward compatibility this
+macro may be called TMPDIR in old "Local/Makefile"s. It's converted to
+EXIM_TMPDIR by the build scripts.
+*/
-#ifdef TMPDIR
+#ifdef EXIM_TMPDIR
{
uschar **p;
- for (p = USS environ; *p != NULL; p++)
+ if (environ) for (p = USS environ; *p != NULL; p++)
{
if (Ustrncmp(*p, "TMPDIR=", 7) == 0 &&
- Ustrcmp(*p+7, TMPDIR) != 0)
+ Ustrcmp(*p+7, EXIM_TMPDIR) != 0)
{
- uschar *newp = malloc(Ustrlen(TMPDIR) + 8);
- sprintf(CS newp, "TMPDIR=%s", TMPDIR);
+ uschar *newp = malloc(Ustrlen(EXIM_TMPDIR) + 8);
+ sprintf(CS newp, "TMPDIR=%s", EXIM_TMPDIR);
*p = newp;
- DEBUG(D_any) debug_printf("reset TMPDIR=%s in environment\n", TMPDIR);
+ DEBUG(D_any) debug_printf("reset TMPDIR=%s in environment\n", EXIM_TMPDIR);
}
}
}
uschar **new;
uschar **newp;
int count = 0;
- while (*p++ != NULL) count++;
+ if (environ) while (*p++ != NULL) count++;
if (envtz == NULL) count++;
newp = new = malloc(sizeof(uschar *) * (count + 1));
- for (p = USS environ; *p != NULL; p++)
+ if (environ) for (p = USS environ; *p != NULL; p++)
{
if (Ustrncmp(*p, "TZ=", 3) == 0) continue;
*newp++ = *p;
Don't attempt it if logging is disabled, or if listing variables or if
verifying/testing addresses or expansions. */
-if (((debug_selector & D_any) != 0 || (log_extra_selector & LX_arguments) != 0)
+if (((debug_selector & D_any) != 0 || LOGGING(arguments))
&& really_exim && !list_options && !checking)
{
int i;
uschar *p = big_buffer;
- Ustrcpy(p, "cwd=");
- (void)getcwd(CS p+4, big_buffer_size - 4);
+ Ustrcpy(p, "cwd= (failed)");
+
+ Ustrncpy(p + 4, initial_cwd, big_buffer_size-5);
+
while (*p) p++;
(void)string_format(p, big_buffer_size - (p - big_buffer), " %d args:", argc);
while (*p) p++;
for (i = 0; i < argc; i++)
{
int len = Ustrlen(argv[i]);
- uschar *printing;
+ const uschar *printing;
uschar *quote;
if (p + len + 8 >= big_buffer + big_buffer_size)
{
printing = string_printing(argv[i]);
if (printing[0] == 0) quote = US"\""; else
{
- uschar *pp = printing;
+ const uschar *pp = printing;
quote = US"";
while (*pp != 0) if (isspace(*pp++)) { quote = US"\""; break; }
}
while (*p) p++;
}
- if ((log_extra_selector & LX_arguments) != 0)
+ if (LOGGING(arguments))
log_write(0, LOG_MAIN, "%s", big_buffer);
else
debug_printf("%s\n", big_buffer);
if (Uchdir(spool_directory) != 0)
{
+ int dummy;
(void)directory_make(spool_directory, US"", SPOOL_DIRECTORY_MODE, FALSE);
- (void)Uchdir(spool_directory);
+ dummy = /* quieten compiler */ Uchdir(spool_directory);
}
/* Handle calls with the -bi option. This is a sendmail option to rebuild *the*
}
}
-/* If an action on specific messages is requested, or if a daemon or queue
-runner is being started, we need to know if Exim was called by an admin user.
-This is the case if the real user is root or exim, or if the real group is
-exim, or if one of the supplementary groups is exim or a group listed in
-admin_groups. We don't fail all message actions immediately if not admin_user,
-since some actions can be performed by non-admin users. Instead, set admin_user
-for later interrogation. */
-
-if (real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid)
- admin_user = TRUE;
-else
- {
- int i, j;
- for (i = 0; i < group_count; i++)
- {
- if (group_list[i] == exim_gid) admin_user = TRUE;
- else if (admin_groups != NULL)
- {
- for (j = 1; j <= (int)(admin_groups[0]); j++)
- if (admin_groups[j] == group_list[i])
- { admin_user = TRUE; break; }
- }
- if (admin_user) break;
- }
- }
-
-/* Another group of privileged users are the trusted users. These are root,
-exim, and any caller matching trusted_users or trusted_groups. Trusted callers
-are permitted to specify sender_addresses with -f on the command line, and
-other message parameters as well. */
-
-if (real_uid == root_uid || real_uid == exim_uid)
- trusted_caller = TRUE;
-else
- {
- int i, j;
-
- if (trusted_users != NULL)
- {
- for (i = 1; i <= (int)(trusted_users[0]); i++)
- if (trusted_users[i] == real_uid)
- { trusted_caller = TRUE; break; }
- }
-
- if (!trusted_caller && trusted_groups != NULL)
- {
- for (i = 1; i <= (int)(trusted_groups[0]); i++)
- {
- if (trusted_groups[i] == real_gid)
- trusted_caller = TRUE;
- else for (j = 0; j < group_count; j++)
- {
- if (trusted_groups[i] == group_list[j])
- { trusted_caller = TRUE; break; }
- }
- if (trusted_caller) break;
- }
- }
- }
+/* We moved the admin/trusted check to be immediately after reading the
+configuration file. We leave these prints here to ensure that syslog setup,
+logfile setup, and so on has already happened. */
if (trusted_caller) DEBUG(D_any) debug_printf("trusted user\n");
if (admin_user) DEBUG(D_any) debug_printf("admin user\n");
Note that authority for performing certain actions on messages is tested in the
queue_action() function. */
-if (!trusted_caller && !checking && filter_test == FTEST_NONE)
+if (!trusted_caller && !checking)
{
sender_host_name = sender_host_address = interface_address =
sender_ident = received_protocol = NULL;
interface_port = check_port(interface_address);
}
+/* If the caller is trusted, then they can use -G to suppress_local_fixups. */
+if (flag_G)
+ {
+ if (trusted_caller)
+ {
+ suppress_local_fixups = suppress_local_fixups_default = TRUE;
+ DEBUG(D_acl) debug_printf("suppress_local_fixups forced on by -G\n");
+ }
+ else
+ {
+ fprintf(stderr, "exim: permission denied (-G requires a trusted user)\n");
+ return EXIT_FAILURE;
+ }
+ }
+
/* If an SMTP message is being received check to see if the standard input is a
TCP/IP socket. If it is, we assume that Exim was called from inetd if the
caller is root or the Exim user, or if the port is a privileged one. Otherwise,
interface_address = host_ntoa(-1, &interface_sock, NULL,
&interface_port);
- if (host_is_tls_on_connect_port(interface_port)) tls_on_connect = TRUE;
+ if (host_is_tls_on_connect_port(interface_port)) tls_in.on_connect = TRUE;
if (real_uid == root_uid || real_uid == exim_uid || interface_port < 1024)
{
exit(yield);
}
-/* All the modes below here require the remaining configuration sections
-to be read, except that we can skip over the ACL setting when delivering
-specific messages, or doing a queue run. (For various testing cases we could
-skip too, but as they are rare, it doesn't really matter.) The argument is TRUE
-for skipping. */
+/* We used to set up here to skip reading the ACL section, on
+ (msg_action_arg > 0 || (queue_interval == 0 && !daemon_listen)
+Now, since the intro of the ${acl } expansion, ACL definitions may be
+needed in transports so we lost the optimisation. */
-readconf_rest(msg_action_arg > 0 || (queue_interval == 0 && !daemon_listen));
+readconf_rest();
/* The configuration data will have been read into POOL_PERM because we won't
ever want to reset back past it. Change the current pool to POOL_MAIN. In fact,
}
/* Handle a request to list one or more configuration options */
+/* If -n was set, we suppress some information */
if (list_options)
{
set_process_info("listing variables");
- if (recipients_arg >= argc) readconf_print(US"all", NULL);
+ if (recipients_arg >= argc) readconf_print(US"all", NULL, flag_n);
else for (i = recipients_arg; i < argc; i++)
{
if (i < argc - 1 &&
(Ustrcmp(argv[i], "router") == 0 ||
Ustrcmp(argv[i], "transport") == 0 ||
Ustrcmp(argv[i], "authenticator") == 0 ||
- Ustrcmp(argv[i], "macro") == 0))
+ Ustrcmp(argv[i], "macro") == 0 ||
+ Ustrcmp(argv[i], "environment") == 0))
{
- readconf_print(argv[i+1], argv[i]);
+ readconf_print(argv[i+1], argv[i], flag_n);
i++;
}
- else readconf_print(argv[i], NULL);
+ else readconf_print(argv[i], NULL, flag_n);
}
exim_exit(EXIT_SUCCESS);
}
+if (list_config)
+ {
+ set_process_info("listing config");
+ readconf_print(US"config", NULL, flag_n);
+ exim_exit(EXIT_SUCCESS);
+ }
+
+
+/* Initialise subsystems as required */
+#ifndef DISABLE_DKIM
+dkim_exim_init();
+#endif
+deliver_init();
+
/* Handle a request to deliver one or more messages that are already on the
queue. Values of msg_action other than MSG_DELIVER and MSG_LOAD are dealt with
if (sender_address == NULL /* No sender_address set */
|| /* OR */
(sender_address[0] != 0 && /* Non-empty sender address, AND */
- !checking && /* Not running tests, AND */
- filter_test == FTEST_NONE)) /* Not testing a filter */
+ !checking)) /* Not running tests, including filter tests */
{
sender_address = originator_login;
sender_address_forced = FALSE;
if (expansion_test)
{
+ dns_init(FALSE, FALSE, FALSE);
if (msg_action_arg > 0 && msg_action == MSG_LOAD)
{
uschar spoolname[256]; /* Not big_buffer; used in spool_read_header() */
"**** This is not for real!\n\n",
sender_host_address);
+ memset(sender_host_cache, 0, sizeof(sender_host_cache));
if (verify_check_host(&hosts_connection_nolog) == OK)
- log_write_selector &= ~L_smtp_connection;
+ BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection);
log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info());
/* NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails,
/* Arrange for message reception if recipients or SMTP were specified;
otherwise complain unless a version print (-bV) happened or this is a filter
-verification test. In the former case, show the configuration file name. */
+verification test or info dump.
+In the former case, show the configuration file name. */
if (recipients_arg >= argc && !extract_recipients && !smtp_input)
{
return EXIT_SUCCESS;
}
+ if (info_flag != CMDINFO_NONE)
+ {
+ show_exim_information(info_flag, info_stdout ? stdout : stderr);
+ return info_stdout ? EXIT_SUCCESS : EXIT_FAILURE;
+ }
+
if (filter_test == FTEST_NONE)
exim_usage(called_as);
}
deliver_drop_privilege = TRUE;
queue_smtp = FALSE;
queue_smtp_domains = NULL;
+#ifdef SUPPORT_I18N
+ message_utf8_downconvert = -1; /* convert-if-needed */
+#endif
}
{
smtp_in = stdin;
smtp_out = stdout;
+ memset(sender_host_cache, 0, sizeof(sender_host_cache));
if (verify_check_host(&hosts_connection_nolog) == OK)
- log_write_selector &= ~L_smtp_connection;
+ BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection);
log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info());
if (!smtp_start_session())
{
if (recipients_max > 0 && ++rcount > recipients_max &&
!extract_recipients)
- {
if (error_handling == ERRORS_STDERR)
{
fprintf(stderr, "exim: too many recipients\n");
moan_to_sender(ERRMESS_TOOMANYRECIP, NULL, NULL, stdin, TRUE)?
errors_sender_rc : EXIT_FAILURE;
}
- }
+#ifdef SUPPORT_I18N
+ {
+ BOOL b = allow_utf8_domains;
+ allow_utf8_domains = TRUE;
+#endif
recipient =
parse_extract_address(s, &errmess, &start, &end, &domain, FALSE);
+#ifdef SUPPORT_I18N
+ if (string_is_utf8(recipient))
+ message_smtputf8 = TRUE;
+ else
+ allow_utf8_domains = b;
+ }
+#endif
if (domain == 0 && !allow_unqualified_recipient)
{
recipient = NULL;
return_path = string_copy(sender_address);
}
else
- {
printf("Return-path = %s\n", (return_path[0] == 0)? US"<>" : return_path);
- }
printf("Sender = %s\n", (sender_address[0] == 0)? US"<>" : sender_address);
receive_add_recipient(
if (ftest_prefix != NULL) printf("Prefix = %s\n", ftest_prefix);
if (ftest_suffix != NULL) printf("Suffix = %s\n", ftest_suffix);
- (void)chdir("/"); /* Get away from wherever the user is running this from */
+ if (chdir("/")) /* Get away from wherever the user is running this from */
+ {
+ DEBUG(D_receive) debug_printf("chdir(\"/\") failed\n");
+ exim_exit(EXIT_FAILURE);
+ }
/* Now we run either a system filter test, or a user filter test, or both.
In the latter case, headers added by the system filter will persist and be
projects / exim.git / blobdiff