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

   1
   2 /*
   3  * rcvdist.c -- asynchronously redistribute messages
   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/fmt_scan.h>
  12 #include <h/rcvmail.h>
  13 #include <h/tws.h>
  14 #include <h/mts.h>
  15 #include <h/utils.h>
  16
  17 static struct swit switches[] = {
  18 #define FORMSW       0
  19     { "form formfile",  4 },
  20 #define VERSIONSW    1
  21     { "version", 0 },
  22 #define HELPSW       2
  23     { "help", 0 },
  24     { NULL, 0 }
  25 };
  26
  27 static char backup[BUFSIZ] = "";
  28 static char drft[BUFSIZ] = "";
  29 static char tmpfil[BUFSIZ] = "";
  30
  31 /*
  32  * prototypes
  33  */
  34 static void rcvdistout (FILE *, char *, char *);
  35 static void unlink_done (int) NORETURN;
  36
  37
  38 int
  39 main (int argc, char **argv)
  40 {
  41     pid_t child_id;
  42     int i, vecp = 1;
  43     char *addrs = NULL, *cp, *form = NULL, buf[BUFSIZ];
  44     char **argp, **arguments, *vec[MAXARGS];
  45     FILE *fp;
  46     char *tfile = NULL;
  47
  48     done=unlink_done;
  49
  50 #ifdef LOCALE
  51     setlocale(LC_ALL, "");
  52 #endif
  53     invo_name = r1bindex (argv[0], '/');
  54
  55     /* read user profile/context */
  56     context_read();
  57
  58     mts_init (invo_name);
  59     arguments = getarguments (invo_name, argc, argv, 1);
  60     argp = arguments;
  61
  62     while ((cp = *argp++)) {
  63         if (*cp == '-') {
  64             switch (smatch (++cp, switches)) {
  65                 case AMBIGSW:
  66                     ambigsw (cp, switches);
  67                     done (1);
  68                 case UNKWNSW:
  69                     vec[vecp++] = --cp;
  70                     continue;
  71
  72                 case HELPSW:
  73                     snprintf (buf, sizeof(buf),
  74                         "%s [switches] [switches for postproc] address ...",
  75                         invo_name);
  76                     print_help (buf, switches, 1);
  77                     done (0);
  78                 case VERSIONSW:
  79                     print_version(invo_name);
  80                     done (0);
  81
  82                 case FORMSW:
  83                     if (!(form = *argp++) || *form == '-')
  84                         adios (NULL, "missing argument to %s", argp[-2]);
  85                     continue;
  86             }
  87         }
  88         addrs = addrs ? add (cp, add (", ", addrs)) : getcpy (cp);
  89     }
  90
  91     if (addrs == NULL)
  92         adios (NULL, "usage: %s [switches] [switches for postproc] address ...",
  93             invo_name);
  94
  95     umask (~m_gmprot ());
  96
  97     tfile = m_mktemp2(NULL, invo_name, NULL, &fp);
  98     if (tfile == NULL) adios("rcvdist", "unable to create temporary file");
  99     strncpy (tmpfil, tfile, sizeof(tmpfil));
 100
 101     cpydata (fileno (stdin), fileno (fp), "message", tmpfil);
 102     fseek (fp, 0L, SEEK_SET);
 103
 104     tfile = m_mktemp2(NULL, invo_name, NULL, NULL);
 105     if (tfile == NULL) adios("forw", "unable to create temporary file");
 106     strncpy (drft, tfile, sizeof(tmpfil));
 107
 108     rcvdistout (fp, form, addrs);
 109     fclose (fp);
 110
 111     if (distout (drft, tmpfil, backup) == NOTOK)
 112         done (1);
 113
 114     vec[0] = r1bindex (postproc, '/');
 115     vec[vecp++] = "-dist";
 116     vec[vecp++] = drft;
 117     if ((cp = context_find ("mhlproc"))) {
 118       vec[vecp++] = "-mhlproc";
 119       vec[vecp++] = cp;
 120     }
 121     vec[vecp] = NULL;
 122
 123     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 124         sleep (5);
 125     switch (child_id) {
 126         case NOTOK:
 127             admonish (NULL, "unable to fork");/* fall */
 128         case OK:
 129             execvp (postproc, vec);
 130             fprintf (stderr, "unable to exec ");
 131             perror (postproc);
 132             _exit (1);
 133
 134         default:
 135             done (pidXwait(child_id, postproc));
 136     }
 137
 138     return 0;  /* dead code to satisfy the compiler */
 139 }
 140
 141 /* very similar to routine in replsbr.c */
 142
 143 #define SBUFSIZ 256
 144
 145 static int outputlinelen = OUTPUTLINELEN;
 146
 147 static struct format *fmt;
 148
 149 static int dat[5];
 150
 151 static char *addrcomps[] = {
 152     "from",
 153     "sender",
 154     "reply-to",
 155     "to",
 156     "cc",
 157     "bcc",
 158     "resent-from",
 159     "resent-sender",
 160     "resent-reply-to",
 161     "resent-to",
 162     "resent-cc",
 163     "resent-bcc",
 164     NULL
 165 };
 166
 167
 168 static void
 169 rcvdistout (FILE *inb, char *form, char *addrs)
 170 {
 171     register int char_read = 0, format_len, i, state;
 172     register char **ap;
 173     char *cp, *scanl, name[NAMESZ], tmpbuf[SBUFSIZ];
 174     register struct comp *cptr;
 175     FILE *out;
 176
 177     if (!(out = fopen (drft, "w")))
 178         adios (drft, "unable to create");
 179
 180     /* get new format string */
 181     cp = new_fs (form ? form : rcvdistcomps, NULL, NULL);
 182     format_len = strlen (cp);
 183     fmt_compile (cp, &fmt, 1);
 184
 185     for (ap = addrcomps; *ap; ap++) {
 186         cptr = fmt_findcomp (*ap);
 187         if (cptr)
 188             cptr->c_type |= CT_ADDR;
 189     }
 190
 191     cptr = fmt_findcomp ("addresses");
 192     if (cptr)
 193         cptr->c_text = addrs;
 194
 195     for (state = FLD;;) {
 196         switch (state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb)) {
 197             case FLD:
 198             case FLDPLUS:
 199                 i = fmt_addcomptext(name, tmpbuf);
 200                 if (i != -1) {
 201                     char_read += msg_count;
 202                     while (state == FLDPLUS) {
 203                         state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
 204                         fmt_appendcomp(i, name, tmpbuf);
 205                         char_read += msg_count;
 206                     }
 207                 }
 208
 209                 while (state == FLDPLUS)
 210                     state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
 211                 break;
 212
 213             case LENERR:
 214             case FMTERR:
 215             case BODY:
 216             case FILEEOF:
 217                 goto finished;
 218
 219             default:
 220                 adios (NULL, "m_getfld() returned %d", state);
 221         }
 222     }
 223 finished: ;
 224
 225     i = format_len + char_read + 256;
 226     scanl = mh_xmalloc ((size_t) i + 2);
 227     dat[0] = dat[1] = dat[2] = dat[4] = 0;
 228     dat[3] = outputlinelen;
 229     fmt_scan (fmt, scanl, i + 1, i, dat);
 230     fputs (scanl, out);
 231
 232     if (ferror (out))
 233         adios (drft, "error writing");
 234     fclose (out);
 235
 236     free (scanl);
 237     fmt_free(fmt, 1);
 238 }
 239
 240
 241 static void
 242 unlink_done (int status)
 243 {
 244     if (backup[0])
 245         unlink (backup);
 246     if (drft[0])
 247         unlink (drft);
 248     if (tmpfil[0])
 249         unlink (tmpfil);
 250
 251     exit (status ? RCV_MBX : RCV_MOK);
 252 }