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("initialtls", TLSminc(-10), INITTLSSW) \
  45     X("notls", TLSminc(-5), NTLSSW) \
  46     X("mts smtp|sendmail/smtp|sendmail/pipe", 0, MTSSW) \
  47
  48 #define X(sw, minchars, id) id,
  49 DEFINE_SWITCH_ENUM(WHOM);
  50 #undef X
  51
  52 #define X(sw, minchars, id) { sw, minchars, id },
  53 DEFINE_SWITCH_ARRAY(WHOM, switches);
  54 #undef X
  55
  56
  57 int
  58 main (int argc, char **argv)
  59 {
  60     pid_t child_id;
  61     int i, status, isdf = 0;
  62     int distsw = 0, vecp = 0;
  63     char *cp, *dfolder = NULL, *dmsg = NULL;
  64     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  65     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  66
  67 #ifdef LOCALE
  68     setlocale(LC_ALL, "");
  69 #endif
  70     invo_name = r1bindex (argv[0], '/');
  71
  72     /* read user profile/context */
  73     context_read();
  74
  75     arguments = getarguments (invo_name, argc, argv, 1);
  76     argp = arguments;
  77
  78     vec[vecp++] = invo_name;
  79     vec[vecp++] = "-whom";
  80     vec[vecp++] = "-library";
  81     vec[vecp++] = getcpy (m_maildir (""));
  82
  83     /* Don't need to feed fileproc or mhlproc to post because
  84        it doesn't use them when used for whom. */
  85
  86     while ((cp = *argp++)) {
  87         if (*cp == '-') {
  88             switch (smatch (++cp, switches)) {
  89                 case AMBIGSW:
  90                     ambigsw (cp, switches);
  91                     done (1);
  92                 case UNKWNSW:
  93                     adios (NULL, "-%s unknown", cp);
  94
  95                 case HELPSW:
  96                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
  97                     print_help (buf, switches, 1);
  98                     done (0);
  99                 case VERSIONSW:
 100                     print_version(invo_name);
 101                     done (0);
 102
 103                 case CHKSW:
 104                 case NOCHKSW:
 105                 case SNOOPSW:
 106                 case SASLSW:
 107                 case TLSSW:
 108                 case INITTLSSW:
 109                 case NTLSSW:
 110                     vec[vecp++] = --cp;
 111                     continue;
 112
 113                 case DRAFTSW:
 114                     msg = draft;
 115                     continue;
 116
 117                 case DFOLDSW:
 118                     if (dfolder)
 119                         adios (NULL, "only one draft folder at a time!");
 120                     if (!(cp = *argp++) || *cp == '-')
 121                         adios (NULL, "missing argument to %s", argp[-2]);
 122                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 123                             *cp != '@' ? TFOLDER : TSUBCWF);
 124                     continue;
 125                 case DMSGSW:
 126                     if (dmsg)
 127                         adios (NULL, "only one draft message at a time!");
 128                     if (!(dmsg = *argp++) || *dmsg == '-')
 129                         adios (NULL, "missing argument to %s", argp[-2]);
 130                     continue;
 131                 case NDFLDSW:
 132                     dfolder = NULL;
 133                     isdf = NOTOK;
 134                     continue;
 135
 136                 case ALIASW:
 137                 case CLIESW:
 138                 case SERVSW:
 139                 case USERSW:
 140                 case PORTSW:
 141                 case SASLMECHSW:
 142                 case MTSSW:
 143                     vec[vecp++] = --cp;
 144                     if (!(cp = *argp++) || *cp == '-')
 145                         adios (NULL, "missing argument to %s", argp[-2]);
 146                     vec[vecp++] = cp;
 147                     continue;
 148             }
 149         }
 150         if (msg)
 151             adios (NULL, "only one draft at a time!");
 152         else
 153             vec[vecp++] = msg = cp;
 154     }
 155
 156     /* allow Aliasfile: profile entry */
 157     if ((cp = context_find ("Aliasfile"))) {
 158         char *dp = NULL;
 159
 160         for (ap = brkstring(dp = getcpy(cp), " ", "\n"); ap && *ap; ap++) {
 161             vec[vecp++] = "-alias";
 162             vec[vecp++] = *ap;
 163         }
 164     }
 165
 166     if (msg == NULL) {
 167 #ifdef  WHATNOW
 168         if (dfolder || (cp = getenv ("mhdraft")) == NULL || *cp == '\0')
 169 #endif  /* WHATNOW */
 170             cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 171         msg = vec[vecp++] = cp;
 172     }
 173     if ((cp = getenv ("mhdist"))
 174             && *cp
 175             && (distsw = atoi (cp))
 176             && (cp = getenv ("mhaltmsg"))
 177             && *cp) {
 178         if (distout (msg, cp, backup) == NOTOK)
 179             done (1);
 180         vec[vecp++] = "-dist";
 181         distsw++;
 182     }
 183     vec[vecp] = NULL;
 184
 185     closefds (3);
 186
 187     if (distsw) {
 188         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 189             sleep (5);
 190     }
 191
 192     switch (distsw ? child_id : OK) {
 193         case NOTOK:
 194             advise (NULL, "unable to fork, so checking directly...");
 195         case OK:
 196             execvp (postproc, vec);
 197             fprintf (stderr, "unable to exec ");
 198             perror (postproc);
 199             _exit (-1);
 200
 201         default:
 202             SIGNAL (SIGHUP, SIG_IGN);
 203             SIGNAL (SIGINT, SIG_IGN);
 204             SIGNAL (SIGQUIT, SIG_IGN);
 205             SIGNAL (SIGTERM, SIG_IGN);
 206
 207             status = pidwait(child_id, OK);
 208
 209             unlink (msg);
 210             if (rename (backup, msg) == NOTOK)
 211                 adios (msg, "unable to rename %s to", backup);
 212             done (status);
 213     }
 214
 215     return 0;  /* dead code to satisfy the compiler */
 216 }