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