Add -bI:help and -bI:sieve

[exim.git] / src / src / exim.c

diff --git a/src/src/exim.c b/src/src/exim.c
index 90ecd0629631b9dcfdb7186117a17d935b45ff48..ff6b4dd86375587017adf48980b18cdfa1321225 100644 (file)
--- a/src/src/exim.c
+++ b/src/src/exim.c
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2009 */
+/* Copyright (c) University of Cambridge 1995 - 2012 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 
@@ -52,6 +52,16 @@ store_free(block);
 
 
 
+/*************************************************
+*         Enums for cmdline interface            *
+*************************************************/
+
+enum commandline_info { CMDINFO_NONE=0,
+  CMDINFO_HELP, CMDINFO_SIEVE };
+
+
+
+
 /*************************************************
 *  Compile regular expression and panic on fail  *
 *************************************************/
@@ -976,20 +986,21 @@ DEBUG(D_any) do {
     }
   }
 
+  /* 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++)
@@ -1013,6 +1024,36 @@ DEBUG(D_any) do {
 }
 
 
+/*************************************************
+*     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: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;
+
+  }
+}
 
 
 /*************************************************
@@ -1428,6 +1469,10 @@ pid_t passed_qr_pid = (pid_t)0;
 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" };
@@ -1927,6 +1972,27 @@ for (i = 1; i < argc; i++)
 
     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"help") == 0)
+          {
+          info_stdout = TRUE;
+          }
+        }
+      }
+
     /* -bm: Accept and deliver message - the default option. Reinstate
     receiving_message, which got turned off for all -b options. */
 
@@ -2060,6 +2126,24 @@ for (i = 1; i < argc; i++)
       show_whats_supported(stdout);
       }
 
+    /* -bw: inetd wait mode, accept a listening socket as stdin */
+
+    else if (*argrest == 'w')
+      {
+      inetd_wait_mode = TRUE;
+      background_daemon = FALSE;
+      daemon_listen = TRUE;
+      if (*(++argrest) != '\0')
+        {
+        inetd_wait_timeout = readconf_readtime(argrest, 0, FALSE);
+        if (inetd_wait_timeout <= 0)
+          {
+          fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]);
+          exit(EXIT_FAILURE);
+          }
+        }
+      }
+
     else badarg = TRUE;
     break;
 
@@ -3222,6 +3306,9 @@ if ((
     daemon_listen && queue_interval == 0
     ) ||
     (
+    inetd_wait_mode && queue_interval >= 0
+    ) ||
+    (
     list_options &&
     (checking || smtp_input || extract_recipients ||
       filter_test != FTEST_NONE || bi_option)
@@ -4406,7 +4493,7 @@ returns. We leave this till here so that the originator_ fields are available
 for incoming messages via the daemon. The daemon cannot be run in mua_wrapper
 mode. */
 
-if (daemon_listen || queue_interval > 0)
+if (daemon_listen || inetd_wait_mode || queue_interval > 0)
   {
   if (mua_wrapper)
     {
@@ -4744,7 +4831,8 @@ if (host_checking)
 
 /* 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)
   {
@@ -4754,6 +4842,12 @@ 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);
   }