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

   1
   2 /*
   3  * whom.c -- report to whom a message would be sent
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <h/signals.h>
  14 #include <signal.h>
  15
  16 #ifndef CYRUS_SASL
  17 # define SASLminc(a) (a)
  18 #else /* CYRUS_SASL */
  19 # define SASLminc(a)  0
  20 #endif /* CYRUS_SASL */
  21
  22 static struct swit switches[] = {
  23 #define ALIASW              0
  24     { "alias aliasfile", 0 },
  25 #define CHKSW               1
  26     { "check", 0 },
  27 #define NOCHKSW             2
  28     { "nocheck", 0 },
  29 #define DRAFTSW             3
  30     { "draft", 0 },
  31 #define DFOLDSW             4
  32     { "draftfolder +folder", 6 },
  33 #define DMSGSW              5
  34     { "draftmessage msg", 6 },
  35 #define NDFLDSW             6
  36     { "nodraftfolder", 0 },
  37 #define VERSIONSW           7
  38     { "version", 0 },
  39 #define HELPSW              8
  40     { "help", 0 },
  41 #define CLIESW              9
  42     { "client host", -6 },
  43 #define SERVSW             10
  44     { "server host", -6 },
  45 #define SNOOPSW            11
  46     { "snoop", -5 },
  47 #define SASLSW             12
  48     { "sasl", SASLminc(4) },
  49 #define SASLMECHSW         13
  50     { "saslmech mechanism", SASLminc(-5) },
  51 #define USERSW             14
  52     { "user username", SASLminc(-4) },
  53 #define PORTSW             15
  54     { "port server port name/number", 4 },
  55     { NULL, 0 }
  56 };
  57
  58
  59 int
  60 main (int argc, char **argv)
  61 {
  62     pid_t child_id;
  63     int i, status, isdf = 0;
  64     int distsw = 0, vecp = 0;
  65     char *cp, *dfolder = NULL, *dmsg = NULL;
  66     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  67     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  68
  69 #ifdef LOCALE
  70     setlocale(LC_ALL, "");
  71 #endif
  72     invo_name = r1bindex (argv[0], '/');
  73
  74     /* read user profile/context */
  75     context_read();
  76
  77     arguments = getarguments (invo_name, argc, argv, 1);
  78     argp = arguments;
  79
  80     vec[vecp++] = invo_name;
  81     vec[vecp++] = "-whom";
  82     vec[vecp++] = "-library";
  83     vec[vecp++] = getcpy (m_maildir (""));
  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 (1);
  98                 case VERSIONSW:
  99                     print_version(invo_name);
 100                     done (1);
 101
 102                 case CHKSW:
 103                 case NOCHKSW:
 104                 case SNOOPSW:
 105                 case SASLSW:
 106                     vec[vecp++] = --cp;
 107                     continue;
 108
 109                 case DRAFTSW:
 110                     msg = draft;
 111                     continue;
 112
 113                 case DFOLDSW:
 114                     if (dfolder)
 115                         adios (NULL, "only one draft folder at a time!");
 116                     if (!(cp = *argp++) || *cp == '-')
 117                         adios (NULL, "missing argument to %s", argp[-2]);
 118                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 119                             *cp != '@' ? TFOLDER : TSUBCWF);
 120                     continue;
 121                 case DMSGSW:
 122                     if (dmsg)
 123                         adios (NULL, "only one draft message at a time!");
 124                     if (!(dmsg = *argp++) || *dmsg == '-')
 125                         adios (NULL, "missing argument to %s", argp[-2]);
 126                     continue;
 127                 case NDFLDSW:
 128                     dfolder = NULL;
 129                     isdf = NOTOK;
 130                     continue;
 131
 132                 case ALIASW:
 133                 case CLIESW:
 134                 case SERVSW:
 135                 case USERSW:
 136                 case PORTSW:
 137                 case SASLMECHSW:
 138                     vec[vecp++] = --cp;
 139                     if (!(cp = *argp++) || *cp == '-')
 140                         adios (NULL, "missing argument to %s", argp[-2]);
 141                     vec[vecp++] = cp;
 142                     continue;
 143             }
 144         }
 145         if (msg)
 146             adios (NULL, "only one draft at a time!");
 147         else
 148             vec[vecp++] = msg = cp;
 149     }
 150
 151     /* allow Aliasfile: profile entry */
 152     if ((cp = context_find ("Aliasfile"))) {
 153         char *dp = NULL;
 154
 155         for (ap = brkstring(dp = getcpy(cp), " ", "\n"); ap && *ap; ap++) {
 156             vec[vecp++] = "-alias";
 157             vec[vecp++] = *ap;
 158         }
 159     }
 160
 161     if (msg == NULL) {
 162 #ifdef  WHATNOW
 163         if (dfolder || (cp = getenv ("mhdraft")) == NULL || *cp == '\0')
 164 #endif  /* WHATNOW */
 165             cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 166         msg = vec[vecp++] = cp;
 167     }
 168     if ((cp = getenv ("mhdist"))
 169             && *cp
 170             && (distsw = atoi (cp))
 171             && (cp = getenv ("mhaltmsg"))
 172             && *cp) {
 173         if (distout (msg, cp, backup) == NOTOK)
 174             done (1);
 175         vec[vecp++] = "-dist";
 176         distsw++;
 177     }
 178     vec[vecp] = NULL;
 179
 180     closefds (3);
 181
 182     if (distsw) {
 183         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 184             sleep (5);
 185     }
 186
 187     switch (distsw ? child_id : OK) {
 188         case NOTOK:
 189             advise (NULL, "unable to fork, so checking directly...");
 190         case OK:
 191             execvp (postproc, vec);
 192             fprintf (stderr, "unable to exec ");
 193             perror (postproc);
 194             _exit (-1);
 195
 196         default:
 197             SIGNAL (SIGHUP, SIG_IGN);
 198             SIGNAL (SIGINT, SIG_IGN);
 199             SIGNAL (SIGQUIT, SIG_IGN);
 200             SIGNAL (SIGTERM, SIG_IGN);
 201
 202             status = pidwait(child_id, OK);
 203
 204             unlink (msg);
 205             if (rename (backup, msg) == NOTOK)
 206                 adios (msg, "unable to rename %s to", backup);
 207             done (status);
 208     }
 209
 210     return 0;  /* dead code to satisfy the compiler */
 211 }