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 (1);
  78                 case VERSIONSW:
  79                     print_version(invo_name);
  80                     done (1);
  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     vec[vecp] = NULL;
 118
 119     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 120         sleep (5);
 121     switch (child_id) {
 122         case NOTOK:
 123             admonish (NULL, "unable to fork");/* fall */
 124         case OK:
 125             execvp (postproc, vec);
 126             fprintf (stderr, "unable to exec ");
 127             perror (postproc);
 128             _exit (1);
 129
 130         default:
 131             done (pidXwait(child_id, postproc));
 132     }
 133
 134     return 0;  /* dead code to satisfy the compiler */
 135 }
 136
 137 /* very similar to routine in replsbr.c */
 138
 139 #define SBUFSIZ 256
 140
 141 static int outputlinelen = OUTPUTLINELEN;
 142
 143 static struct format *fmt;
 144
 145 static int ncomps = 0;
 146 static char **compbuffers = 0;
 147 static struct comp **used_buf = 0;
 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 *tmpbuf, **nxtbuf, **ap;
 173     char *cp, *scanl, name[NAMESZ];
 174     register struct comp *cptr, **savecomp;
 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     ncomps = fmt_compile (cp, &fmt) + 1;
 184     if (!(nxtbuf = compbuffers = (char **) calloc ((size_t) ncomps, sizeof(char *))))
 185         adios (NULL, "unable to allocate component buffers");
 186     if (!(savecomp = used_buf = (struct comp **) calloc ((size_t) (ncomps + 1), sizeof(struct comp *))))
 187         adios (NULL, "unable to allocate component buffer stack");
 188     savecomp += ncomps + 1;
 189     *--savecomp = 0;
 190
 191     for (i = ncomps; i--;)
 192         *nxtbuf++ = mh_xmalloc (SBUFSIZ);
 193     nxtbuf = compbuffers;
 194     tmpbuf = *nxtbuf++;
 195
 196     for (ap = addrcomps; *ap; ap++) {
 197         FINDCOMP (cptr, *ap);
 198         if (cptr)
 199             cptr->c_type |= CT_ADDR;
 200     }
 201
 202     FINDCOMP (cptr, "addresses");
 203     if (cptr)
 204         cptr->c_text = addrs;
 205
 206     for (state = FLD;;) {
 207         switch (state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb)) {
 208             case FLD:
 209             case FLDPLUS:
 210                 if ((cptr = wantcomp[CHASH (name)]))
 211                     do {
 212                         if (!mh_strcasecmp (name, cptr->c_name)) {
 213                             char_read += msg_count;
 214                             if (!cptr->c_text) {
 215                                 cptr->c_text = tmpbuf;
 216                                 *--savecomp = cptr;
 217                                 tmpbuf = *nxtbuf++;
 218                             }
 219                             else {
 220                                 i = strlen (cp = cptr->c_text) - 1;
 221                                 if (cp[i] == '\n') {
 222                                     if (cptr->c_type & CT_ADDR) {
 223                                         cp[i] = 0;
 224                                         cp = add (",\n\t", cp);
 225                                     }
 226                                     else
 227                                         cp = add ("\t", cp);
 228                                 }
 229                                 cptr->c_text = add (tmpbuf, cp);
 230                             }
 231                             while (state == FLDPLUS) {
 232                                 state = m_getfld (state, name, tmpbuf,
 233                                                   SBUFSIZ, inb);
 234                                 cptr->c_text = add (tmpbuf, cptr->c_text);
 235                                 char_read += msg_count;
 236                             }
 237                             break;
 238                         }
 239                     } while ((cptr = cptr->c_next));
 240
 241                 while (state == FLDPLUS)
 242                     state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
 243                 break;
 244
 245             case LENERR:
 246             case FMTERR:
 247             case BODY:
 248             case FILEEOF:
 249                 goto finished;
 250
 251             default:
 252                 adios (NULL, "m_getfld() returned %d", state);
 253         }
 254     }
 255 finished: ;
 256
 257     i = format_len + char_read + 256;
 258     scanl = mh_xmalloc ((size_t) i + 2);
 259     dat[0] = dat[1] = dat[2] = dat[4] = 0;
 260     dat[3] = outputlinelen;
 261     fmt_scan (fmt, scanl, i, dat);
 262     fputs (scanl, out);
 263
 264     if (ferror (out))
 265         adios (drft, "error writing");
 266     fclose (out);
 267
 268     free (scanl);
 269     for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++); nxtbuf++, i--)
 270         free (cptr->c_text);
 271     while (i-- > 0)
 272         free (*nxtbuf++);
 273     free ((char *) compbuffers);
 274     free ((char *) used_buf);
 275 }
 276
 277
 278 static void
 279 unlink_done (int status)
 280 {
 281     if (backup[0])
 282         unlink (backup);
 283     if (drft[0])
 284         unlink (drft);
 285     if (tmpfil[0])
 286         unlink (tmpfil);
 287
 288     exit (status ? RCV_MBX : RCV_MOK);
 289 }