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

   1 /* whom.c -- report to whom a message would be sent
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include <h/mh.h>
   9 #include <h/utils.h>
  10 #include <h/signals.h>
  11
  12 #ifndef CYRUS_SASL
  13 # define SASLminc(a) (a)
  14 #else /* CYRUS_SASL */
  15 # define SASLminc(a)  0
  16 #endif /* CYRUS_SASL */
  17
  18 #ifndef TLS_SUPPORT
  19 # define TLSminc(a)  (a)
  20 #else /* TLS_SUPPORT */
  21 # define TLSminc(a)   0
  22 #endif /* TLS_SUPPORT */
  23
  24 #define WHOM_SWITCHES \
  25     X("alias aliasfile", 0, ALIASW) \
  26     X("check", 0, CHKSW) \
  27     X("nocheck", 0, NOCHKSW) \
  28     X("draft", 0, DRAFTSW) \
  29     X("draftfolder +folder", 6, DFOLDSW) \
  30     X("draftmessage msg", 6, DMSGSW) \
  31     X("nodraftfolder", 0, NDFLDSW) \
  32     X("version", 0, VERSIONSW) \
  33     X("help", 0, HELPSW) \
  34     X("client host", -6, CLIESW) \
  35     X("server host", 0, SERVSW) \
  36     X("snoop", 0, SNOOPSW) \
  37     X("sasl", SASLminc(4), SASLSW) \
  38     X("saslmech mechanism", SASLminc(-5), SASLMECHSW) \
  39     X("user username", SASLminc(-4), USERSW) \
  40     X("port server port name/number", 4, PORTSW) \
  41     X("tls", TLSminc(-3), TLSSW) \
  42     X("initialtls", TLSminc(-10), INITTLSSW) \
  43     X("notls", TLSminc(-5), NTLSSW) \
  44     X("mts smtp|sendmail/smtp|sendmail/pipe", 0, MTSSW) \
  45
  46 #define X(sw, minchars, id) id,
  47 DEFINE_SWITCH_ENUM(WHOM);
  48 #undef X
  49
  50 #define X(sw, minchars, id) { sw, minchars, id },
  51 DEFINE_SWITCH_ARRAY(WHOM, switches);
  52 #undef X
  53
  54
  55 int
  56 main (int argc, char **argv)
  57 {
  58     pid_t child_id = OK;
  59     int i, status, isdf = 0;
  60     int distsw = 0, vecp = 0;
  61     char *cp, *dfolder = NULL, *dmsg = NULL;
  62     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  63     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  64
  65     if (nmh_init(argv[0], 2)) { return 1; }
  66
  67     arguments = getarguments (invo_name, argc, argv, 1);
  68     argp = arguments;
  69
  70     vec[vecp++] = invo_name;
  71     vec[vecp++] = "-whom";
  72     vec[vecp++] = "-library";
  73     vec[vecp++] = getcpy (m_maildir (""));
  74
  75     /* Don't need to feed fileproc or mhlproc to post because
  76        it doesn't use them when used for whom. */
  77
  78     while ((cp = *argp++)) {
  79         if (*cp == '-') {
  80             switch (smatch (++cp, switches)) {
  81                 case AMBIGSW:
  82                     ambigsw (cp, switches);
  83                     done (1);
  84                 case UNKWNSW:
  85                     adios (NULL, "-%s unknown", cp);
  86
  87                 case HELPSW:
  88                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
  89                     print_help (buf, switches, 1);
  90                     done (0);
  91                 case VERSIONSW:
  92                     print_version(invo_name);
  93                     done (0);
  94
  95                 case CHKSW:
  96                 case NOCHKSW:
  97                 case SNOOPSW:
  98                 case SASLSW:
  99                 case TLSSW:
 100                 case INITTLSSW:
 101                 case NTLSSW:
 102                     vec[vecp++] = --cp;
 103                     continue;
 104
 105                 case DRAFTSW:
 106                     msg = draft;
 107                     continue;
 108
 109                 case DFOLDSW:
 110                     if (dfolder)
 111                         adios (NULL, "only one draft folder at a time!");
 112                     if (!(cp = *argp++) || *cp == '-')
 113                         adios (NULL, "missing argument to %s", argp[-2]);
 114                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 115                             *cp != '@' ? TFOLDER : TSUBCWF);
 116                     continue;
 117                 case DMSGSW:
 118                     if (dmsg)
 119                         adios (NULL, "only one draft message at a time!");
 120                     if (!(dmsg = *argp++) || *dmsg == '-')
 121                         adios (NULL, "missing argument to %s", argp[-2]);
 122                     continue;
 123                 case NDFLDSW:
 124                     dfolder = NULL;
 125                     isdf = NOTOK;
 126                     continue;
 127
 128                 case ALIASW:
 129                 case CLIESW:
 130                 case SERVSW:
 131                 case USERSW:
 132                 case PORTSW:
 133                 case SASLMECHSW:
 134                 case MTSSW:
 135                     vec[vecp++] = --cp;
 136                     if (!(cp = *argp++) || *cp == '-')
 137                         adios (NULL, "missing argument to %s", argp[-2]);
 138                     vec[vecp++] = cp;
 139                     continue;
 140             }
 141         }
 142         if (msg)
 143             adios (NULL, "only one draft at a time!");
 144         else
 145             vec[vecp++] = msg = cp;
 146     }
 147
 148     /* allow Aliasfile: profile entry */
 149     if ((cp = context_find ("Aliasfile"))) {
 150         char *dp = NULL;
 151
 152         for (ap = brkstring(dp = mh_xstrdup(cp), " ", "\n"); ap && *ap; ap++) {
 153             vec[vecp++] = "-alias";
 154             vec[vecp++] = *ap;
 155         }
 156     }
 157
 158     if (msg == NULL) {
 159             cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 160         msg = vec[vecp++] = cp;
 161     }
 162     if ((cp = getenv ("mhdist"))
 163             && *cp
 164             && (distsw = atoi (cp))
 165             && (cp = getenv ("mhaltmsg"))
 166             && *cp) {
 167         if (distout (msg, cp, backup) == NOTOK)
 168             done (1);
 169         vec[vecp++] = "-dist";
 170         distsw++;
 171     }
 172     vec[vecp] = NULL;
 173
 174     closefds (3);
 175
 176     if (distsw) {
 177         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 178             sleep (5);
 179     }
 180
 181     switch (distsw ? child_id : OK) {
 182         case NOTOK:
 183             inform("unable to fork, so checking directly...");
 184             /* FALLTHRU */
 185         case OK:
 186             execvp (postproc, vec);
 187             fprintf (stderr, "unable to exec ");
 188             perror (postproc);
 189             _exit (-1);
 190
 191         default:
 192             SIGNAL (SIGHUP, SIG_IGN);
 193             SIGNAL (SIGINT, SIG_IGN);
 194             SIGNAL (SIGQUIT, SIG_IGN);
 195             SIGNAL (SIGTERM, SIG_IGN);
 196
 197             status = pidwait(child_id, OK);
 198
 199             (void) m_unlink (msg);
 200             if (rename (backup, msg) == NOTOK)
 201                 adios (msg, "unable to rename %s to", backup);
 202             done (status);
 203     }
 204
 205     return 0;  /* dead code to satisfy the compiler */
 206 }