-/* $Cambridge: exim/src/src/exim.c,v 1.71 2010/06/07 00:12:42 pdp Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
+/*************************************************
+* Set up processing details *
+*************************************************/
+
+/* Save a text string for dumping when SIGUSR1 is received.
+Do checks for overruns.
+
+Arguments: format and arguments, as for printf()
+Returns: nothing
+*/
+
+void
+set_process_info(const char *format, ...)
+{
+int len;
+va_list ap;
+sprintf(CS process_info, "%5d ", (int)getpid());
+len = Ustrlen(process_info);
+va_start(ap, format);
+if (!string_vformat(process_info + len, PROCESS_INFO_SIZE - len - 2, format, ap))
+ Ustrcpy(process_info + len, "**** string overflowed buffer ****");
+len = Ustrlen(process_info);
+process_info[len+0] = '\n';
+process_info[len+1] = '\0';
+process_info_len = len + 1;
+DEBUG(D_process_info) debug_printf("set_process_info: %s", process_info);
+va_end(ap);
+}
+
+
+
+
/*************************************************
* Handler for SIGUSR1 *
*************************************************/
setting up a handler that causes automatic restarting of any system call
that is in progress at the time.
+This function takes care to be signal-safe.
+
Argument: the signal number (SIGUSR1)
Returns: nothing
*/
static void
usr1_handler(int sig)
{
-sig = sig; /* Keep picky compilers happy */
-log_write(0, LOG_PROCESS, "%s", process_info);
-log_close_all();
-os_restarting_signal(SIGUSR1, usr1_handler);
+int fd;
+
+os_restarting_signal(sig, usr1_handler);
+
+fd = Uopen(process_log_path, O_APPEND|O_WRONLY, LOG_MODE);
+if (fd < 0)
+ {
+ /* If we are already running as the Exim user, try to create it in the
+ current process (assuming spool_directory exists). Otherwise, if we are
+ root, do the creation in an exim:exim subprocess. */
+
+ int euid = geteuid();
+ if (euid == exim_uid)
+ fd = Uopen(process_log_path, O_CREAT|O_APPEND|O_WRONLY, LOG_MODE);
+ else if (euid == root_uid)
+ fd = log_create_as_exim(process_log_path);
+ }
+
+/* If we are neither exim nor root, or if we failed to create the log file,
+give up. There is not much useful we can do with errors, since we don't want
+to disrupt whatever is going on outside the signal handler. */
+
+if (fd < 0) return;
+
+(void)write(fd, process_info, process_info_len);
+(void)close(fd);
}
-/*************************************************
-* Set up processing details *
-*************************************************/
-
-/* Save a text string for dumping when SIGUSR1 is received.
-Do checks for overruns.
-
-Arguments: format and arguments, as for printf()
-Returns: nothing
-*/
-
-void
-set_process_info(const char *format, ...)
-{
-int len;
-va_list ap;
-sprintf(CS process_info, "%5d ", (int)getpid());
-len = Ustrlen(process_info);
-va_start(ap, format);
-if (!string_vformat(process_info + len, PROCESS_INFO_SIZE - len, format, ap))
- Ustrcpy(process_info + len, "**** string overflowed buffer ****");
-DEBUG(D_process_info) debug_printf("set_process_info: %s\n", process_info);
-va_end(ap);
-}
-
-
-
-
-
/*************************************************
* Call fopen() with umask 777 and adjust mode *
*************************************************/
static void
show_whats_supported(FILE *f)
{
+ auth_info *authi;
+
#ifdef DB_VERSION_STRING
fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING);
#elif defined(BTREEVERSION) && defined(HASHVERSION)
#ifdef AUTH_DOVECOT
fprintf(f, " dovecot");
#endif
+#ifdef AUTH_GSASL
+ fprintf(f, " gsasl");
+#endif
#ifdef AUTH_PLAINTEXT
fprintf(f, " plaintext");
#endif
fprintf(f, "Size of off_t: " SIZE_T_FMT "\n", sizeof(off_t));
-/* This runtime check is to help diagnose library linkage mismatches which
-result in segfaults and the like; as such, it's left until the end,
-just in case. There will still be a "Configuration file is" line still to
-come. */
-#ifdef SUPPORT_TLS
-tls_version_report(f);
-#endif
-
/* Everything else is details which are only worth reporting when debugging.
Perhaps the tls_version_report should move into this too. */
DEBUG(D_any) do {
int i;
-#ifdef AUTH_CYRUS_SASL
- auth_cyrus_sasl_version_report(f);
+/* clang defines __GNUC__ (at least, for me) so test for it first */
+#if defined(__clang__)
+ fprintf(f, "Compiler: CLang [%s]\n", __clang_version__);
+#elif defined(__GNUC__)
+ fprintf(f, "Compiler: GCC [%s]\n",
+# ifdef __VERSION__
+ __VERSION__
+# else
+ "? unknown version ?"
+# endif
+ );
+#else
+ fprintf(f, "Compiler: <unknown>\n");
+#endif
+
+#ifdef SUPPORT_TLS
+ tls_version_report(f);
#endif
+ for (authi = auths_available; *authi->driver_name != '\0'; ++authi) {
+ if (authi->version_report) {
+ (*authi->version_report)(f);
+ }
+ }
+
fprintf(f, "Library version: PCRE: Compile: %d.%d%s\n"
" Runtime: %s\n",
PCRE_MAJOR, PCRE_MINOR,
* unless its an ancient version of PCRE in which case it
* is not defined */
#ifdef PCRE_PRERELEASE
- PCRE_PRERELEASE "",
+# define STRINGIFY(x) #x
+ STRINGIFY(PCRE_PRERELEASE) "",
+# undef STRINGIFY
#else
"",
#endif
void (**fn_addhist_ptr)(const char *))
{
void *dlhandle;
-void *dlhandle_curses = dlopen("libcurses.so", RTLD_GLOBAL|RTLD_LAZY);
+void *dlhandle_curses = dlopen("libcurses." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_LAZY);
-dlhandle = dlopen("libreadline.so", RTLD_GLOBAL|RTLD_NOW);
+dlhandle = dlopen("libreadline." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_NOW);
if (dlhandle_curses != NULL) dlclose(dlhandle_curses);
if (dlhandle != NULL)
return FALSE;
}
}
-DEBUG(D_any) debug_printf("macros_trusted overriden to true by whitelisting\n");
+DEBUG(D_any) debug_printf("macros_trusted overridden to true by whitelisting\n");
return TRUE;
#endif
}
EXIM_USERNAME);
exit(EXIT_FAILURE);
}
- exim_gid = pw->pw_gid;
+ /* If ref:name uses a number as the name, route_finduser() returns
+ TRUE with exim_uid set and pw coerced to NULL. */
+ if (pw)
+ exim_gid = pw->pw_gid;
+#ifndef EXIM_GROUPNAME
+ else
+ {
+ fprintf(stderr,
+ "exim: ref:name should specify a usercode, not a group.\n"
+ "exim: can't let you get away with it unless you also specify a group.\n");
+ exit(EXIT_FAILURE);
+ }
+#endif
}
else
{
git://git.exim.org / exim.git / blobdiff