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

   1
   2 /*
   3  * whom.c -- report to whom a message would be sent
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <h/signals.h>
  12 #include <signal.h>
  13
  14 #ifndef CYRUS_SASL
  15 # define SASLminc(a) (a)
  16 #else /* CYRUS_SASL */
  17 # define SASLminc(a)  0
  18 #endif /* CYRUS_SASL */
  19
  20 #ifndef TLS_SUPPORT
  21 # define TLSminc(a)  (a)
  22 #else /* TLS_SUPPORT */
  23 # define TLSminc(a)   0
  24 #endif /* TLS_SUPPORT */
  25
  26 #define WHOM_SWITCHES \
  27     X("alias aliasfile", 0, ALIASW) \
  28     X("check", 0, CHKSW) \
  29     X("nocheck", 0, NOCHKSW) \
  30     X("draft", 0, DRAFTSW) \
  31     X("draftfolder +folder", 6, DFOLDSW) \
  32     X("draftmessage msg", 6, DMSGSW) \
  33     X("nodraftfolder", 0, NDFLDSW) \
  34     X("version", 0, VERSIONSW) \
  35     X("help", 0, HELPSW) \
  36     X("client host", -6, CLIESW) \
  37     X("server host", -6, SERVSW) \
  38     X("snoop", -5, SNOOPSW) \
  39     X("sasl", SASLminc(4), SASLSW) \
  40     X("saslmech mechanism", SASLminc(-5), SASLMECHSW) \
  41     X("user username", SASLminc(-4), USERSW) \
  42     X("port server port name/number", 4, PORTSW) \
  43     X("tls", TLSminc(-3), TLSSW) \
  44     X("notls", TLSminc(-5), NTLSSW) \
  45     X("mts smtp|sendmail/smtp|sendmail/pipe", 0, MTSSW) \
  46
  47 #define X(sw, minchars, id) id,
  48 DEFINE_SWITCH_ENUM(WHOM);
  49 #undef X
  50
  51 #define X(sw, minchars, id) { sw, minchars, id },
  52 DEFINE_SWITCH_ARRAY(WHOM, switches);
  53 #undef X
  54
  55
  56 int
  57 main (int argc, char **argv)
  58 {
  59     pid_t child_id;
  60     int i, status, isdf = 0;
  61     int distsw = 0, vecp = 0;
  62     char *cp, *dfolder = NULL, *dmsg = NULL;
  63     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  64     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  65
  66 #ifdef LOCALE
  67     setlocale(LC_ALL, "");
  68 #endif
  69     invo_name = r1bindex (argv[0], '/');
  70
  71     /* read user profile/context */
  72     context_read();
  73
  74     arguments = getarguments (invo_name, argc, argv, 1);
  75     argp = arguments;
  76
  77     vec[vecp++] = invo_name;
  78     vec[vecp++] = "-whom";
  79     vec[vecp++] = "-library";
  80     vec[vecp++] = getcpy (m_maildir (""));
  81
  82     /* Don't need to feed fileproc or mhlproc to post because
  83        it doesn't use them when used for whom. */
  84
  85     while ((cp = *argp++)) {
  86         if (*cp == '-') {
  87             switch (smatch (++cp, switches)) {
  88                 case AMBIGSW:
  89                     ambigsw (cp, switches);
  90                     done (1);
  91                 case UNKWNSW:
  92                     adios (NULL, "-%s unknown", cp);
  93
  94                 case HELPSW:
  95                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
  96                     print_help (buf, switches, 1);
  97                     done (0);
  98                 case VERSIONSW:
  99                     print_version(invo_name);
 100                     done (0);
 101
 102                 case CHKSW:
 103                 case NOCHKSW:
 104                 case SNOOPSW:
 105                 case SASLSW:
 106                 case TLSSW:
 107                 case NTLSSW:
 108                     vec[vecp++] = --cp;
 109                     continue;
 110
 111                 case DRAFTSW:
 112                     msg = draft;
 113                     continue;
 114
 115                 case DFOLDSW:
 116                     if (dfolder)
 117                         adios (NULL, "only one draft folder at a time!");
 118                     if (!(cp = *argp++) || *cp == '-')
 119                         adios (NULL, "missing argument to %s", argp[-2]);
 120                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 121                             *cp != '@' ? TFOLDER : TSUBCWF);
 122                     continue;
 123                 case DMSGSW:
 124                     if (dmsg)
 125                         adios (NULL, "only one draft message at a time!");
 126                     if (!(dmsg = *argp++) || *dmsg == '-')
 127                         adios (NULL, "missing argument to %s", argp[-2]);
 128                     continue;
 129                 case NDFLDSW:
 130                     dfolder = NULL;
 131                     isdf = NOTOK;
 132                     continue;
 133
 134                 case ALIASW:
 135                 case CLIESW:
 136                 case SERVSW:
 137                 case USERSW:
 138                 case PORTSW:
 139                 case SASLMECHSW:
 140                 case MTSSW:
 141                     vec[vecp++] = --cp;
 142                     if (!(cp = *argp++) || *cp == '-')
 143                         adios (NULL, "missing argument to %s", argp[-2]);
 144                     vec[vecp++] = cp;
 145                     continue;
 146             }
 147         }
 148         if (msg)
 149             adios (NULL, "only one draft at a time!");
 150         else
 151             vec[vecp++] = msg = cp;
 152     }
 153
 154     /* allow Aliasfile: profile entry */
 155     if ((cp = context_find ("Aliasfile"))) {
 156         char *dp = NULL;
 157
 158         for (ap = brkstring(dp = getcpy(cp), " ", "\n"); ap && *ap; ap++) {
 159             vec[vecp++] = "-alias";
 160             vec[vecp++] = *ap;
 161         }
 162     }
 163
 164     if (msg == NULL) {
 165 #ifdef  WHATNOW
 166         if (dfolder || (cp = getenv ("mhdraft")) == NULL || *cp == '\0')
 167 #endif  /* WHATNOW */
 168             cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 169         msg = vec[vecp++] = cp;
 170     }
 171     if ((cp = getenv ("mhdist"))
 172             && *cp
 173             && (distsw = atoi (cp))
 174             && (cp = getenv ("mhaltmsg"))
 175             && *cp) {
 176         if (distout (msg, cp, backup) == NOTOK)
 177             done (1);
 178         vec[vecp++] = "-dist";
 179         distsw++;
 180     }
 181     vec[vecp] = NULL;
 182
 183     closefds (3);
 184
 185     if (distsw) {
 186         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 187             sleep (5);
 188     }
 189
 190     switch (distsw ? child_id : OK) {
 191         case NOTOK:
 192             advise (NULL, "unable to fork, so checking directly...");
 193         case OK:
 194             execvp (postproc, vec);
 195             fprintf (stderr, "unable to exec ");
 196             perror (postproc);
 197             _exit (-1);
 198
 199         default:
 200             SIGNAL (SIGHUP, SIG_IGN);
 201             SIGNAL (SIGINT, SIG_IGN);
 202             SIGNAL (SIGQUIT, SIG_IGN);
 203             SIGNAL (SIGTERM, SIG_IGN);
 204
 205             status = pidwait(child_id, OK);
 206
 207             unlink (msg);
 208             if (rename (backup, msg) == NOTOK)
 209                 adios (msg, "unable to rename %s to", backup);
 210             done (status);
 211     }
 212
 213     return 0;  /* dead code to satisfy the compiler */
 214 }