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 static struct swit switches[] = {
  27 #define ALIASW              0
  28     { "alias aliasfile", 0 },
  29 #define CHKSW               1
  30     { "check", 0 },
  31 #define NOCHKSW             2
  32     { "nocheck", 0 },
  33 #define DRAFTSW             3
  34     { "draft", 0 },
  35 #define DFOLDSW             4
  36     { "draftfolder +folder", 6 },
  37 #define DMSGSW              5
  38     { "draftmessage msg", 6 },
  39 #define NDFLDSW             6
  40     { "nodraftfolder", 0 },
  41 #define VERSIONSW           7
  42     { "version", 0 },
  43 #define HELPSW              8
  44     { "help", 0 },
  45 #define CLIESW              9
  46     { "client host", -6 },
  47 #define SERVSW             10
  48     { "server host", -6 },
  49 #define SNOOPSW            11
  50     { "snoop", -5 },
  51 #define SASLSW             12
  52     { "sasl", SASLminc(4) },
  53 #define SASLMECHSW         13
  54     { "saslmech mechanism", SASLminc(-5) },
  55 #define USERSW             14
  56     { "user username", SASLminc(-4) },
  57 #define PORTSW             15
  58     { "port server port name/number", 4 },
  59 #define TLSSW              16
  60     { "tls", TLSminc(-3) },
  61 #define NTLSSW             17
  62     { "notls", TLSminc(-5) },
  63 #define MTSSW              18
  64     { "mts smtp|sendmail/smtp|sendmail/pipe", 0 },
  65     { NULL, 0 }
  66 };
  67
  68
  69 int
  70 main (int argc, char **argv)
  71 {
  72     pid_t child_id;
  73     int i, status, isdf = 0;
  74     int distsw = 0, vecp = 0;
  75     char *cp, *dfolder = NULL, *dmsg = NULL;
  76     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  77     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  78
  79 #ifdef LOCALE
  80     setlocale(LC_ALL, "");
  81 #endif
  82     invo_name = r1bindex (argv[0], '/');
  83
  84     /* read user profile/context */
  85     context_read();
  86
  87     arguments = getarguments (invo_name, argc, argv, 1);
  88     argp = arguments;
  89
  90     vec[vecp++] = invo_name;
  91     vec[vecp++] = "-whom";
  92     vec[vecp++] = "-library";
  93     vec[vecp++] = getcpy (m_maildir (""));
  94
  95     /* Don't need to feed fileproc or mhlproc to post because
  96        it doesn't use them when used for whom. */
  97
  98     while ((cp = *argp++)) {
  99         if (*cp == '-') {
 100             switch (smatch (++cp, switches)) {
 101                 case AMBIGSW:
 102                     ambigsw (cp, switches);
 103                     done (1);
 104                 case UNKWNSW:
 105                     adios (NULL, "-%s unknown", cp);
 106
 107                 case HELPSW:
 108                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
 109                     print_help (buf, switches, 1);
 110                     done (0);
 111                 case VERSIONSW:
 112                     print_version(invo_name);
 113                     done (0);
 114
 115                 case CHKSW:
 116                 case NOCHKSW:
 117                 case SNOOPSW:
 118                 case SASLSW:
 119                 case TLSSW:
 120                 case NTLSSW:
 121                     vec[vecp++] = --cp;
 122                     continue;
 123
 124                 case DRAFTSW:
 125                     msg = draft;
 126                     continue;
 127
 128                 case DFOLDSW:
 129                     if (dfolder)
 130                         adios (NULL, "only one draft folder at a time!");
 131                     if (!(cp = *argp++) || *cp == '-')
 132                         adios (NULL, "missing argument to %s", argp[-2]);
 133                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 134                             *cp != '@' ? TFOLDER : TSUBCWF);
 135                     continue;
 136                 case DMSGSW:
 137                     if (dmsg)
 138                         adios (NULL, "only one draft message at a time!");
 139                     if (!(dmsg = *argp++) || *dmsg == '-')
 140                         adios (NULL, "missing argument to %s", argp[-2]);
 141                     continue;
 142                 case NDFLDSW:
 143                     dfolder = NULL;
 144                     isdf = NOTOK;
 145                     continue;
 146
 147                 case ALIASW:
 148                 case CLIESW:
 149                 case SERVSW:
 150                 case USERSW:
 151                 case PORTSW:
 152                 case SASLMECHSW:
 153                 case MTSSW:
 154                     vec[vecp++] = --cp;
 155                     if (!(cp = *argp++) || *cp == '-')
 156                         adios (NULL, "missing argument to %s", argp[-2]);
 157                     vec[vecp++] = cp;
 158                     continue;
 159             }
 160         }
 161         if (msg)
 162             adios (NULL, "only one draft at a time!");
 163         else
 164             vec[vecp++] = msg = cp;
 165     }
 166
 167     /* allow Aliasfile: profile entry */
 168     if ((cp = context_find ("Aliasfile"))) {
 169         char *dp = NULL;
 170
 171         for (ap = brkstring(dp = getcpy(cp), " ", "\n"); ap && *ap; ap++) {
 172             vec[vecp++] = "-alias";
 173             vec[vecp++] = *ap;
 174         }
 175     }
 176
 177     if (msg == NULL) {
 178 #ifdef  WHATNOW
 179         if (dfolder || (cp = getenv ("mhdraft")) == NULL || *cp == '\0')
 180 #endif  /* WHATNOW */
 181             cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 182         msg = vec[vecp++] = cp;
 183     }
 184     if ((cp = getenv ("mhdist"))
 185             && *cp
 186             && (distsw = atoi (cp))
 187             && (cp = getenv ("mhaltmsg"))
 188             && *cp) {
 189         if (distout (msg, cp, backup) == NOTOK)
 190             done (1);
 191         vec[vecp++] = "-dist";
 192         distsw++;
 193     }
 194     vec[vecp] = NULL;
 195
 196     closefds (3);
 197
 198     if (distsw) {
 199         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 200             sleep (5);
 201     }
 202
 203     switch (distsw ? child_id : OK) {
 204         case NOTOK:
 205             advise (NULL, "unable to fork, so checking directly...");
 206         case OK:
 207             execvp (postproc, vec);
 208             fprintf (stderr, "unable to exec ");
 209             perror (postproc);
 210             _exit (-1);
 211
 212         default:
 213             SIGNAL (SIGHUP, SIG_IGN);
 214             SIGNAL (SIGINT, SIG_IGN);
 215             SIGNAL (SIGQUIT, SIG_IGN);
 216             SIGNAL (SIGTERM, SIG_IGN);
 217
 218             status = pidwait(child_id, OK);
 219
 220             unlink (msg);
 221             if (rename (backup, msg) == NOTOK)
 222                 adios (msg, "unable to rename %s to", backup);
 223             done (status);
 224     }
 225
 226     return 0;  /* dead code to satisfy the compiler */
 227 }