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     { NULL, 0 }
  62 };
  63
  64
  65 int
  66 main (int argc, char **argv)
  67 {
  68     pid_t child_id;
  69     int i, status, isdf = 0;
  70     int distsw = 0, vecp = 0;
  71     char *cp, *dfolder = NULL, *dmsg = NULL;
  72     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  73     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  74
  75 #ifdef LOCALE
  76     setlocale(LC_ALL, "");
  77 #endif
  78     invo_name = r1bindex (argv[0], '/');
  79
  80     /* read user profile/context */
  81     context_read();
  82
  83     arguments = getarguments (invo_name, argc, argv, 1);
  84     argp = arguments;
  85
  86     vec[vecp++] = invo_name;
  87     vec[vecp++] = "-whom";
  88     vec[vecp++] = "-library";
  89     vec[vecp++] = getcpy (m_maildir (""));
  90
  91     /* Don't need to feed fileproc or mhlproc to post because
  92        it doesn't use them when used for whom. */
  93
  94     while ((cp = *argp++)) {
  95         if (*cp == '-') {
  96             switch (smatch (++cp, switches)) {
  97                 case AMBIGSW:
  98                     ambigsw (cp, switches);
  99                     done (1);
 100                 case UNKWNSW:
 101                     adios (NULL, "-%s unknown", cp);
 102
 103                 case HELPSW:
 104                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
 105                     print_help (buf, switches, 1);
 106                     done (1);
 107                 case VERSIONSW:
 108                     print_version(invo_name);
 109                     done (1);
 110
 111                 case CHKSW:
 112                 case NOCHKSW:
 113                 case SNOOPSW:
 114                 case SASLSW:
 115                     vec[vecp++] = --cp;
 116                     continue;
 117
 118                 case DRAFTSW:
 119                     msg = draft;
 120                     continue;
 121
 122                 case DFOLDSW:
 123                     if (dfolder)
 124                         adios (NULL, "only one draft folder at a time!");
 125                     if (!(cp = *argp++) || *cp == '-')
 126                         adios (NULL, "missing argument to %s", argp[-2]);
 127                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 128                             *cp != '@' ? TFOLDER : TSUBCWF);
 129                     continue;
 130                 case DMSGSW:
 131                     if (dmsg)
 132                         adios (NULL, "only one draft message at a time!");
 133                     if (!(dmsg = *argp++) || *dmsg == '-')
 134                         adios (NULL, "missing argument to %s", argp[-2]);
 135                     continue;
 136                 case NDFLDSW:
 137                     dfolder = NULL;
 138                     isdf = NOTOK;
 139                     continue;
 140
 141                 case ALIASW:
 142                 case CLIESW:
 143                 case SERVSW:
 144                 case USERSW:
 145                 case PORTSW:
 146                 case SASLMECHSW:
 147                     vec[vecp++] = --cp;
 148                     if (!(cp = *argp++) || *cp == '-')
 149                         adios (NULL, "missing argument to %s", argp[-2]);
 150                     vec[vecp++] = cp;
 151                     continue;
 152             }
 153         }
 154         if (msg)
 155             adios (NULL, "only one draft at a time!");
 156         else
 157             vec[vecp++] = msg = cp;
 158     }
 159
 160     /* allow Aliasfile: profile entry */
 161     if ((cp = context_find ("Aliasfile"))) {
 162         char *dp = NULL;
 163
 164         for (ap = brkstring(dp = getcpy(cp), " ", "\n"); ap && *ap; ap++) {
 165             vec[vecp++] = "-alias";
 166             vec[vecp++] = *ap;
 167         }
 168     }
 169
 170     if (msg == NULL) {
 171 #ifdef  WHATNOW
 172         if (dfolder || (cp = getenv ("mhdraft")) == NULL || *cp == '\0')
 173 #endif  /* WHATNOW */
 174             cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 175         msg = vec[vecp++] = cp;
 176     }
 177     if ((cp = getenv ("mhdist"))
 178             && *cp
 179             && (distsw = atoi (cp))
 180             && (cp = getenv ("mhaltmsg"))
 181             && *cp) {
 182         if (distout (msg, cp, backup) == NOTOK)
 183             done (1);
 184         vec[vecp++] = "-dist";
 185         distsw++;
 186     }
 187     vec[vecp] = NULL;
 188
 189     closefds (3);
 190
 191     if (distsw) {
 192         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 193             sleep (5);
 194     }
 195
 196     switch (distsw ? child_id : OK) {
 197         case NOTOK:
 198             advise (NULL, "unable to fork, so checking directly...");
 199         case OK:
 200             execvp (postproc, vec);
 201             fprintf (stderr, "unable to exec ");
 202             perror (postproc);
 203             _exit (-1);
 204
 205         default:
 206             SIGNAL (SIGHUP, SIG_IGN);
 207             SIGNAL (SIGINT, SIG_IGN);
 208             SIGNAL (SIGQUIT, SIG_IGN);
 209             SIGNAL (SIGTERM, SIG_IGN);
 210
 211             status = pidwait(child_id, OK);
 212
 213             unlink (msg);
 214             if (rename (backup, msg) == NOTOK)
 215                 adios (msg, "unable to rename %s to", backup);
 216             done (status);
 217     }
 218
 219     return 0;  /* dead code to satisfy the compiler */
 220 }