diplodocus.org Git - nmh/blob - docs/historical/mh-6.8.5/uip/whom.c

   1 /* whom.c - report who a message would go to */
   2 #ifndef lint
   3 static char ident[] = "@(#)$Id: whom.c,v 1.11 1992/12/15 00:20:22 jromine Exp $";
   4 #endif  /* lint */
   5
   6 #include "../h/mh.h"
   7 #include <stdio.h>
   8 #include <signal.h>
   9 #ifdef LOCALE
  10 #include        <locale.h>
  11 #endif
  12
  13 /* \f */
  14
  15 static struct swit switches[] = {
  16 #define ALIASW  0
  17     "alias aliasfile", 0,
  18
  19 #define CHKSW   1
  20     "check", 0,
  21 #define NOCHKSW 2
  22     "nocheck", 0,
  23
  24 #define DRAFTSW 3
  25     "draft", 0,
  26
  27 #define DFOLDSW 4
  28     "draftfolder +folder", 6,
  29 #define DMSGSW  5
  30     "draftmessage msg", 6,
  31 #define NDFLDSW 6
  32     "nodraftfolder", 0,
  33
  34 #define HELPSW  7
  35     "help", 4,
  36
  37 #define CLIESW  8
  38     "client host", -6,
  39 #define SERVSW  9
  40     "server host", -6,
  41 #define SNOOPSW 10
  42     "snoop", -5,
  43
  44     NULL, 0
  45 };
  46
  47 /* \f */
  48
  49 /* ARGSUSED */
  50
  51 main (argc, argv)
  52 int     argc;
  53 char   *argv[];
  54 {
  55     int     child_id,
  56             i,
  57             status,
  58             isdf = 0,
  59             distsw = 0,
  60             vecp = 0;
  61     char   *cp,
  62            *dfolder = NULL,
  63            *dmsg = NULL,
  64            *msg = NULL,
  65           **ap,
  66           **argp,
  67             backup[BUFSIZ],
  68             buf[100],
  69            *arguments[MAXARGS],
  70            *vec[MAXARGS];
  71
  72 #ifdef LOCALE
  73         setlocale(LC_ALL, "");
  74 #endif
  75     invo_name = r1bindex (argv[0], '/');
  76     if ((cp = m_find (invo_name)) != NULL) {
  77         ap = brkstring (cp = getcpy (cp), " ", "\n");
  78         ap = copyip (ap, arguments);
  79     }
  80     else
  81         ap = arguments;
  82     (void) copyip (argv + 1, ap);
  83     argp = arguments;
  84
  85     vec[vecp++] = invo_name;
  86     vec[vecp++] = "-whom";
  87     vec[vecp++] = "-library";
  88     vec[vecp++] = getcpy (m_maildir (""));
  89
  90 /* \f */
  91
  92     while (cp = *argp++) {
  93         if (*cp == '-')
  94             switch (smatch (++cp, switches)) {
  95                 case AMBIGSW:
  96                     ambigsw (cp, switches);
  97                     done (1);
  98                 case UNKWNSW:
  99                     adios (NULLCP, "-%s unknown", cp);
 100                 case HELPSW:
 101                     (void) sprintf (buf, "%s [switches] [file]", invo_name);
 102                     help (buf, switches);
 103                     done (1);
 104
 105                 case CHKSW:
 106                 case NOCHKSW:
 107                 case SNOOPSW:
 108                     vec[vecp++] = --cp;
 109                     continue;
 110
 111                 case DRAFTSW:
 112                     msg = draft;
 113                     continue;
 114
 115                 case DFOLDSW:
 116                     if (dfolder)
 117                         adios (NULLCP, "only one draft folder at a time!");
 118                     if (!(cp = *argp++) || *cp == '-')
 119                         adios (NULLCP, "missing argument to %s", argp[-2]);
 120                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 121                             *cp != '@' ? TFOLDER : TSUBCWF);
 122                     continue;
 123                 case DMSGSW:
 124                     if (dmsg)
 125                         adios (NULLCP, "only one draft message at a time!");
 126                     if (!(dmsg = *argp++) || *dmsg == '-')
 127                         adios (NULLCP, "missing argument to %s", argp[-2]);
 128                     continue;
 129                 case NDFLDSW:
 130                     dfolder = NULL;
 131                     isdf = NOTOK;
 132                     continue;
 133
 134                 case ALIASW:
 135                 case CLIESW:
 136                 case SERVSW:
 137                     vec[vecp++] = --cp;
 138                     if (!(cp = *argp++) || *cp == '-')
 139                         adios (NULLCP, "missing argument to %s", argp[-2]);
 140                     vec[vecp++] = cp;
 141                     continue;
 142             }
 143         if (msg)
 144             adios (NULLCP, "only one draft at a time!");
 145         else
 146             vec[vecp++] = msg = cp;
 147     }
 148     if (cp = m_find ("Aliasfile")) {    /* allow Aliasfile: profile entry */
 149         char *dp = NULL;
 150
 151         for (ap = brkstring(dp = getcpy(cp), " ", "\n"); ap && *ap; ap++) {
 152             vec[vecp++] = "-alias";
 153             vec[vecp++] = *ap;
 154         }
 155     }
 156
 157 /* \f */
 158
 159     if (msg == NULL) {
 160 #ifdef  WHATNOW
 161         if (dfolder || (cp = getenv ("mhdraft")) == NULL || *cp == '\0')
 162 #endif  /* WHATNOW */
 163             cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 164         msg = vec[vecp++] = cp;
 165     }
 166     if ((cp = getenv ("mhdist"))
 167             && *cp
 168             && (distsw = atoi (cp))
 169             && (cp = getenv ("mhaltmsg"))
 170             && *cp) {
 171         if (distout (msg, cp, backup) == NOTOK)
 172             done (1);
 173         vec[vecp++] = "-dist";
 174         distsw++;
 175     }
 176     vec[vecp] = NULL;
 177
 178     closefds (3);
 179
 180     if (distsw)
 181         for (i = 0; (child_id = fork ()) == NOTOK && i < 5; i++)
 182             sleep (5);
 183     switch (distsw ? child_id : OK) {
 184         case NOTOK:
 185             advise (NULLCP, "unable to fork, so checking directly...");
 186         case OK:
 187             execvp (postproc, vec);
 188             fprintf (stderr, "unable to exec ");
 189             perror (postproc);
 190             _exit (-1);
 191
 192         default:
 193             (void) signal (SIGHUP, SIG_IGN);
 194             (void) signal (SIGINT, SIG_IGN);
 195             (void) signal (SIGQUIT, SIG_IGN);
 196             (void) signal (SIGTERM, SIG_IGN);
 197
 198             status = pidwait (child_id, OK);
 199
 200             (void) unlink (msg);
 201             if (rename (backup, msg) == NOTOK)
 202                 adios (msg, "unable to rename %s to", backup);
 203             done (status);
 204     }
 205 }