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

   1
   2 /*
   3  * rcvdist.c -- asynchronously redistribute messages
   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/fmt_scan.h>
  14 #include <h/rcvmail.h>
  15 #include <h/tws.h>
  16 #include <h/mts.h>
  17 #include <h/utils.h>
  18
  19 static struct swit switches[] = {
  20 #define FORMSW       0
  21     { "form formfile",  4 },
  22 #define VERSIONSW    1
  23     { "version", 0 },
  24 #define HELPSW       2
  25     { "help", 0 },
  26     { NULL, 0 }
  27 };
  28
  29 static char backup[BUFSIZ] = "";
  30 static char drft[BUFSIZ] = "";
  31 static char tmpfil[BUFSIZ] = "";
  32
  33 /*
  34  * prototypes
  35  */
  36 static void rcvdistout (FILE *, char *, char *);
  37 int done (int);
  38
  39
  40 int
  41 main (int argc, char **argv)
  42 {
  43     pid_t child_id;
  44     int i, vecp = 1;
  45     char *addrs = NULL, *cp, *form = NULL, buf[BUFSIZ];
  46     char **argp, **arguments, *vec[MAXARGS];
  47     register FILE *fp;
  48
  49 #ifdef LOCALE
  50     setlocale(LC_ALL, "");
  51 #endif
  52     invo_name = r1bindex (argv[0], '/');
  53
  54     /* read user profile/context */
  55     context_read();
  56
  57     mts_init (invo_name);
  58     arguments = getarguments (invo_name, argc, argv, 1);
  59     argp = arguments;
  60
  61     while ((cp = *argp++)) {
  62         if (*cp == '-') {
  63             switch (smatch (++cp, switches)) {
  64                 case AMBIGSW:
  65                     ambigsw (cp, switches);
  66                     done (1);
  67                 case UNKWNSW:
  68                     vec[vecp++] = --cp;
  69                     continue;
  70
  71                 case HELPSW:
  72                     snprintf (buf, sizeof(buf),
  73                         "%s [switches] [switches for postproc] address ...",
  74                         invo_name);
  75                     print_help (buf, switches, 1);
  76                     done (1);
  77                 case VERSIONSW:
  78                     print_version(invo_name);
  79                     done (1);
  80
  81                 case FORMSW:
  82                     if (!(form = *argp++) || *form == '-')
  83                         adios (NULL, "missing argument to %s", argp[-2]);
  84                     continue;
  85             }
  86         }
  87         addrs = addrs ? add (cp, add (", ", addrs)) : getcpy (cp);
  88     }
  89
  90     if (addrs == NULL)
  91         adios (NULL, "usage: %s [switches] [switches for postproc] address ...",
  92             invo_name);
  93
  94     umask (~m_gmprot ());
  95     strncpy (tmpfil, m_tmpfil (invo_name), sizeof(tmpfil));
  96     if ((fp = fopen (tmpfil, "w+")) == NULL)
  97         adios (tmpfil, "unable to create");
  98     cpydata (fileno (stdin), fileno (fp), "message", tmpfil);
  99     fseek (fp, 0L, SEEK_SET);
 100     strncpy (drft, m_tmpfil (invo_name), sizeof(drft));
 101     rcvdistout (fp, form, addrs);
 102     fclose (fp);
 103
 104     if (distout (drft, tmpfil, backup) == NOTOK)
 105         done (1);
 106
 107     vec[0] = r1bindex (postproc, '/');
 108     vec[vecp++] = "-dist";
 109     vec[vecp++] = drft;
 110     vec[vecp] = NULL;
 111
 112     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 113         sleep (5);
 114     switch (child_id) {
 115         case NOTOK:
 116             admonish (NULL, "unable to fork");/* fall */
 117         case OK:
 118             execvp (postproc, vec);
 119             fprintf (stderr, "unable to exec ");
 120             perror (postproc);
 121             _exit (1);
 122
 123         default:
 124             done (pidXwait(child_id, postproc));
 125     }
 126
 127     return 0;  /* dead code to satisfy the compiler */
 128 }
 129
 130 /* very similar to routine in replsbr.c */
 131
 132 #define SBUFSIZ 256
 133
 134 static int outputlinelen = OUTPUTLINELEN;
 135
 136 static struct format *fmt;
 137
 138 static int ncomps = 0;
 139 static char **compbuffers = 0;
 140 static struct comp **used_buf = 0;
 141
 142 static int dat[5];
 143
 144 static char *addrcomps[] = {
 145     "from",
 146     "sender",
 147     "reply-to",
 148     "to",
 149     "cc",
 150     "bcc",
 151     "resent-from",
 152     "resent-sender",
 153     "resent-reply-to",
 154     "resent-to",
 155     "resent-cc",
 156     "resent-bcc",
 157     NULL
 158 };
 159
 160
 161 static void
 162 rcvdistout (FILE *inb, char *form, char *addrs)
 163 {
 164     register int char_read = 0, format_len, i, state;
 165     register char *tmpbuf, **nxtbuf, **ap;
 166     char *cp, *scanl, name[NAMESZ];
 167     register struct comp *cptr, **savecomp;
 168     FILE *out;
 169
 170     if (!(out = fopen (drft, "w")))
 171         adios (drft, "unable to create");
 172
 173     /* get new format string */
 174     cp = new_fs (form ? form : rcvdistcomps, NULL, NULL);
 175     format_len = strlen (cp);
 176     ncomps = fmt_compile (cp, &fmt) + 1;
 177     if (!(nxtbuf = compbuffers = (char **) calloc ((size_t) ncomps, sizeof(char *))))
 178         adios (NULL, "unable to allocate component buffers");
 179     if (!(savecomp = used_buf = (struct comp **) calloc ((size_t) (ncomps + 1), sizeof(struct comp *))))
 180         adios (NULL, "unable to allocate component buffer stack");
 181     savecomp += ncomps + 1;
 182     *--savecomp = 0;
 183
 184     for (i = ncomps; i--;)
 185         *nxtbuf++ = mh_xmalloc (SBUFSIZ);
 186     nxtbuf = compbuffers;
 187     tmpbuf = *nxtbuf++;
 188
 189     for (ap = addrcomps; *ap; ap++) {
 190         FINDCOMP (cptr, *ap);
 191         if (cptr)
 192             cptr->c_type |= CT_ADDR;
 193     }
 194
 195     FINDCOMP (cptr, "addresses");
 196     if (cptr)
 197         cptr->c_text = addrs;
 198
 199     for (state = FLD;;) {
 200         switch (state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb)) {
 201             case FLD:
 202             case FLDPLUS:
 203                 if ((cptr = wantcomp[CHASH (name)]))
 204                     do {
 205                         if (!mh_strcasecmp (name, cptr->c_name)) {
 206                             char_read += msg_count;
 207                             if (!cptr->c_text) {
 208                                 cptr->c_text = tmpbuf;
 209                                 *--savecomp = cptr;
 210                                 tmpbuf = *nxtbuf++;
 211                             }
 212                             else {
 213                                 i = strlen (cp = cptr->c_text) - 1;
 214                                 if (cp[i] == '\n') {
 215                                     if (cptr->c_type & CT_ADDR) {
 216                                         cp[i] = 0;
 217                                         cp = add (",\n\t", cp);
 218                                     }
 219                                     else
 220                                         cp = add ("\t", cp);
 221                                 }
 222                                 cptr->c_text = add (tmpbuf, cp);
 223                             }
 224                             while (state == FLDPLUS) {
 225                                 state = m_getfld (state, name, tmpbuf,
 226                                                   SBUFSIZ, inb);
 227                                 cptr->c_text = add (tmpbuf, cptr->c_text);
 228                                 char_read += msg_count;
 229                             }
 230                             break;
 231                         }
 232                     } while ((cptr = cptr->c_next));
 233
 234                 while (state == FLDPLUS)
 235                     state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
 236                 break;
 237
 238             case LENERR:
 239             case FMTERR:
 240             case BODY:
 241             case FILEEOF:
 242                 goto finished;
 243
 244             default:
 245                 adios (NULL, "m_getfld() returned %d", state);
 246         }
 247     }
 248 finished: ;
 249
 250     i = format_len + char_read + 256;
 251     scanl = mh_xmalloc ((size_t) i + 2);
 252     dat[0] = dat[1] = dat[2] = dat[4] = 0;
 253     dat[3] = outputlinelen;
 254     fmt_scan (fmt, scanl, i, dat);
 255     fputs (scanl, out);
 256
 257     if (ferror (out))
 258         adios (drft, "error writing");
 259     fclose (out);
 260
 261     free (scanl);
 262     for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++); nxtbuf++, i--)
 263         free (cptr->c_text);
 264     while (i-- > 0)
 265         free (*nxtbuf++);
 266     free ((char *) compbuffers);
 267     free ((char *) used_buf);
 268 }
 269
 270
 271 int
 272 done (int status)
 273 {
 274     if (backup[0])
 275         unlink (backup);
 276     if (drft[0])
 277         unlink (drft);
 278     if (tmpfil[0])
 279         unlink (tmpfil);
 280
 281     exit (status ? RCV_MBX : RCV_MOK);
 282     return 1;  /* dead code to satisfy the compiler */
 283 }