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