diplodocus.org Git - nmh/blob - uip/whom.c

   1
   2 /*
   3  * whom.c -- report to whom a message would be sent
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <h/signals.h>
  14 #include <signal.h>
  15
  16 static struct swit switches[] = {
  17 #define ALIASW              0
  18     { "alias aliasfile", 0 },
  19 #define CHKSW               1
  20     { "check", 0 },
  21 #define NOCHKSW             2
  22     { "nocheck", 0 },
  23 #define DRAFTSW             3
  24     { "draft", 0 },
  25 #define DFOLDSW             4
  26     { "draftfolder +folder", 6 },
  27 #define DMSGSW              5
  28     { "draftmessage msg", 6 },
  29 #define NDFLDSW             6
  30     { "nodraftfolder", 0 },
  31 #define VERSIONSW           7
  32     { "version", 0 },
  33 #define HELPSW              8
  34     { "help", 0 },
  35 #define CLIESW              9
  36     { "client host", -6 },
  37 #define SERVSW             10
  38     { "server host", -6 },
  39 #define SNOOPSW            11
  40     { "snoop", -5 },
  41     { NULL, 0 }
  42 };
  43
  44
  45 int
  46 main (int argc, char **argv)
  47 {
  48     pid_t child_id;
  49     int i, status, isdf = 0;
  50     int distsw = 0, vecp = 0;
  51     char *cp, *dfolder = NULL, *dmsg = NULL;
  52     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  53     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  54
  55 #ifdef LOCALE
  56     setlocale(LC_ALL, "");
  57 #endif
  58     invo_name = r1bindex (argv[0], '/');
  59
  60     /* read user profile/context */
  61     context_read();
  62
  63     arguments = getarguments (invo_name, argc, argv, 1);
  64     argp = arguments;
  65
  66     vec[vecp++] = invo_name;
  67     vec[vecp++] = "-whom";
  68     vec[vecp++] = "-library";
  69     vec[vecp++] = getcpy (m_maildir (""));
  70
  71     while ((cp = *argp++)) {
  72         if (*cp == '-') {
  73             switch (smatch (++cp, switches)) {
  74                 case AMBIGSW:
  75                     ambigsw (cp, switches);
  76                     done (1);
  77                 case UNKWNSW:
  78                     adios (NULL, "-%s unknown", cp);
  79
  80                 case HELPSW:
  81                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
  82                     print_help (buf, switches, 1);
  83                     done (1);
  84                 case VERSIONSW:
  85                     print_version(invo_name);
  86                     done (1);
  87
  88                 case CHKSW:
  89                 case NOCHKSW:
  90                 case SNOOPSW:
  91                     vec[vecp++] = --cp;
  92                     continue;
  93
  94                 case DRAFTSW:
  95                     msg = draft;
  96                     continue;
  97
  98                 case DFOLDSW:
  99                     if (dfolder)
 100                         adios (NULL, "only one draft folder at a time!");
 101                     if (!(cp = *argp++) || *cp == '-')
 102                         adios (NULL, "missing argument to %s", argp[-2]);
 103                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 104                             *cp != '@' ? TFOLDER : TSUBCWF);
 105                     continue;
 106                 case DMSGSW:
 107                     if (dmsg)
 108                         adios (NULL, "only one draft message at a time!");
 109                     if (!(dmsg = *argp++) || *dmsg == '-')
 110                         adios (NULL, "missing argument to %s", argp[-2]);
 111                     continue;
 112                 case NDFLDSW:
 113                     dfolder = NULL;
 114                     isdf = NOTOK;
 115                     continue;
 116
 117                 case ALIASW:
 118                 case CLIESW:
 119                 case SERVSW:
 120                     vec[vecp++] = --cp;
 121                     if (!(cp = *argp++) || *cp == '-')
 122                         adios (NULL, "missing argument to %s", argp[-2]);
 123                     vec[vecp++] = cp;
 124                     continue;
 125             }
 126         }
 127         if (msg)
 128             adios (NULL, "only one draft at a time!");
 129         else
 130             vec[vecp++] = msg = cp;
 131     }
 132
 133     /* allow Aliasfile: profile entry */
 134     if ((cp = context_find ("Aliasfile"))) {
 135         char *dp = NULL;
 136
 137         for (ap = brkstring(dp = getcpy(cp), " ", "\n"); ap && *ap; ap++) {
 138             vec[vecp++] = "-alias";
 139             vec[vecp++] = *ap;
 140         }
 141     }
 142
 143     if (msg == NULL) {
 144 #ifdef  WHATNOW
 145         if (dfolder || (cp = getenv ("mhdraft")) == NULL || *cp == '\0')
 146 #endif  /* WHATNOW */
 147             cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 148         msg = vec[vecp++] = cp;
 149     }
 150     if ((cp = getenv ("mhdist"))
 151             && *cp
 152             && (distsw = atoi (cp))
 153             && (cp = getenv ("mhaltmsg"))
 154             && *cp) {
 155         if (distout (msg, cp, backup) == NOTOK)
 156             done (1);
 157         vec[vecp++] = "-dist";
 158         distsw++;
 159     }
 160     vec[vecp] = NULL;
 161
 162     closefds (3);
 163
 164     if (distsw) {
 165         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 166             sleep (5);
 167     }
 168
 169     switch (distsw ? child_id : OK) {
 170         case NOTOK:
 171             advise (NULL, "unable to fork, so checking directly...");
 172         case OK:
 173             execvp (postproc, vec);
 174             fprintf (stderr, "unable to exec ");
 175             perror (postproc);
 176             _exit (-1);
 177
 178         default:
 179             SIGNAL (SIGHUP, SIG_IGN);
 180             SIGNAL (SIGINT, SIG_IGN);
 181             SIGNAL (SIGQUIT, SIG_IGN);
 182             SIGNAL (SIGTERM, SIG_IGN);
 183
 184             status = pidwait(child_id, OK);
 185
 186             unlink (msg);
 187             if (rename (backup, msg) == NOTOK)
 188                 adios (msg, "unable to rename %s to", backup);
 189             done (status);
 190     }
 191
 192     return 0;  /* dead code to satisfy the compiler */
 193 }