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

   1
   2 /*
   3  * rcvdist.c -- asynchronously redistribute messages
   4  *
   5  * $Id$
   6  */
   7
   8 #include <h/mh.h>
   9 #include <h/fmt_scan.h>
  10 #include <h/rcvmail.h>
  11 #include <zotnet/tws/tws.h>
  12
  13 static struct swit switches[] = {
  14 #define FORMSW       0
  15     { "form formfile",  4 },
  16 #define VERSIONSW    1
  17     { "version", 0 },
  18 #define HELPSW       2
  19     { "help", 4 },
  20     { NULL, 0 }
  21 };
  22
  23 static char backup[BUFSIZ] = "";
  24 static char drft[BUFSIZ] = "";
  25 static char tmpfil[BUFSIZ] = "";
  26
  27 /*
  28  * prototypes
  29  */
  30 static void rcvdistout (FILE *, char *, char *);
  31 void done (int);
  32
  33
  34 int
  35 main (int argc, char **argv)
  36 {
  37     pid_t child_id;
  38     int i, vecp = 1;
  39     char *addrs = NULL, *cp, *form = NULL, buf[BUFSIZ];
  40     char **argp, **arguments, *vec[MAXARGS];
  41     register FILE *fp;
  42
  43 #ifdef LOCALE
  44     setlocale(LC_ALL, "");
  45 #endif
  46     invo_name = r1bindex (argv[0], '/');
  47
  48     /* read user profile/context */
  49     context_read();
  50
  51     mts_init (invo_name);
  52     arguments = getarguments (invo_name, argc, argv, 1);
  53     argp = arguments;
  54
  55     while ((cp = *argp++)) {
  56         if (*cp == '-') {
  57             switch (smatch (++cp, switches)) {
  58                 case AMBIGSW:
  59                     ambigsw (cp, switches);
  60                     done (1);
  61                 case UNKWNSW:
  62                     vec[vecp++] = --cp;
  63                     continue;
  64
  65                 case HELPSW:
  66                     snprintf (buf, sizeof(buf),
  67                         "%s [switches] [switches for postproc] address ...",
  68                         invo_name);
  69                     print_help (buf, switches, 1);
  70                     done (1);
  71                 case VERSIONSW:
  72                     print_version(invo_name);
  73                     done (1);
  74
  75                 case FORMSW:
  76                     if (!(form = *argp++) || *form == '-')
  77                         adios (NULL, "missing argument to %s", argp[-2]);
  78                     continue;
  79             }
  80         }
  81         addrs = addrs ? add (cp, add (", ", addrs)) : getcpy (cp);
  82     }
  83
  84     if (addrs == NULL)
  85         adios (NULL, "usage: %s [switches] [switches for postproc] address ...",
  86             invo_name);
  87
  88     umask (~m_gmprot ());
  89     strncpy (tmpfil, m_tmpfil (invo_name), sizeof(tmpfil));
  90     if ((fp = fopen (tmpfil, "w+")) == NULL)
  91         adios (tmpfil, "unable to create");
  92     cpydata (fileno (stdin), fileno (fp), "message", tmpfil);
  93     fseek (fp, 0L, SEEK_SET);
  94     strncpy (drft, m_tmpfil (invo_name), sizeof(drft));
  95     rcvdistout (fp, form, addrs);
  96     fclose (fp);
  97
  98     if (distout (drft, tmpfil, backup) == NOTOK)
  99         done (1);
 100
 101     vec[0] = r1bindex (postproc, '/');
 102     vec[vecp++] = "-dist";
 103     vec[vecp++] = drft;
 104     vec[vecp] = NULL;
 105
 106     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 107         sleep (5);
 108     switch (child_id) {
 109         case NOTOK:
 110             admonish (NULL, "unable to fork");/* fall */
 111         case OK:
 112             execvp (postproc, vec);
 113             fprintf (stderr, "unable to exec ");
 114             perror (postproc);
 115             _exit (1);
 116
 117         default:
 118             done (pidXwait(child_id, postproc));
 119     }
 120 /* NOTREACHED */
 121 }
 122
 123 /* very similar to routine in replsbr.c */
 124
 125 #define SBUFSIZ 256
 126
 127 static int outputlinelen = OUTPUTLINELEN;
 128
 129 static struct format *fmt;
 130
 131 static int ncomps = 0;
 132 static char **compbuffers = 0;
 133 static struct comp **used_buf = 0;
 134
 135 static int dat[5];
 136
 137 static char *addrcomps[] = {
 138     "from",
 139     "sender",
 140     "reply-to",
 141     "to",
 142     "cc",
 143     "bcc",
 144     "resent-from",
 145     "resent-sender",
 146     "resent-reply-to",
 147     "resent-to",
 148     "resent-cc",
 149     "resent-bcc",
 150     NULL
 151 };
 152
 153
 154 static void
 155 rcvdistout (FILE *inb, char *form, char *addrs)
 156 {
 157     register int char_read = 0, format_len, i, state;
 158     register char *tmpbuf, **nxtbuf, **ap;
 159     char *cp, *scanl, name[NAMESZ];
 160     register struct comp *cptr, **savecomp;
 161     FILE *out;
 162
 163     if (!(out = fopen (drft, "w")))
 164         adios (drft, "unable to create");
 165
 166     /* get new format string */
 167     cp = new_fs (form ? form : rcvdistcomps, NULL, NULL);
 168     format_len = strlen (cp);
 169     ncomps = fmt_compile (cp, &fmt) + 1;
 170     if (!(nxtbuf = compbuffers = (char **) calloc ((size_t) ncomps, sizeof(char *))))
 171         adios (NULL, "unable to allocate component buffers");
 172     if (!(savecomp = used_buf = (struct comp **) calloc ((size_t) (ncomps + 1), sizeof(struct comp *))))
 173         adios (NULL, "unable to allocate component buffer stack");
 174     savecomp += ncomps + 1;
 175     *--savecomp = 0;
 176
 177     for (i = ncomps; i--;)
 178         if (!(*nxtbuf++ = malloc (SBUFSIZ)))
 179             adios (NULL, "unable to allocate component buffer");
 180     nxtbuf = compbuffers;
 181     tmpbuf = *nxtbuf++;
 182
 183     for (ap = addrcomps; *ap; ap++) {
 184         FINDCOMP (cptr, *ap);
 185         if (cptr)
 186             cptr->c_type |= CT_ADDR;
 187     }
 188
 189     FINDCOMP (cptr, "addresses");
 190     if (cptr)
 191         cptr->c_text = addrs;
 192
 193     for (state = FLD;;) {
 194         switch (state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb)) {
 195             case FLD:
 196             case FLDPLUS:
 197                 if ((cptr = wantcomp[CHASH (name)]))
 198                     do {
 199                         if (!strcasecmp (name, cptr->c_name)) {
 200                             char_read += msg_count;
 201                             if (!cptr->c_text) {
 202                                 cptr->c_text = tmpbuf;
 203                                 *--savecomp = cptr;
 204                                 tmpbuf = *nxtbuf++;
 205                             }
 206                             else {
 207                                 i = strlen (cp = cptr->c_text) - 1;
 208                                 if (cp[i] == '\n')
 209                                     if (cptr->c_type & CT_ADDR) {
 210                                         cp[i] = 0;
 211                                         cp = add (",\n\t", cp);
 212                                     }
 213                                     else
 214                                         cp = add ("\t", cp);
 215                                 cptr->c_text = add (tmpbuf, cp);
 216                             }
 217                             while (state == FLDPLUS) {
 218                                 state = m_getfld (state, name, tmpbuf,
 219                                                   SBUFSIZ, inb);
 220                                 cptr->c_text = add (tmpbuf, cptr->c_text);
 221                                 char_read += msg_count;
 222                             }
 223                             break;
 224                         }
 225                     } while ((cptr = cptr->c_next));
 226
 227                 while (state == FLDPLUS)
 228                     state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
 229                 break;
 230
 231             case LENERR:
 232             case FMTERR:
 233             case BODY:
 234             case FILEEOF:
 235                 goto finished;
 236
 237             default:
 238                 adios (NULL, "m_getfld() returned %d", state);
 239         }
 240     }
 241 finished: ;
 242
 243     i = format_len + char_read + 256;
 244     scanl = malloc ((size_t) i + 2);
 245     dat[0] = dat[1] = dat[2] = dat[4] = 0;
 246     dat[3] = outputlinelen;
 247     fmt_scan (fmt, scanl, i, dat);
 248     fputs (scanl, out);
 249
 250     if (ferror (out))
 251         adios (drft, "error writing");
 252     fclose (out);
 253
 254     free (scanl);
 255     for (nxtbuf = compbuffers, i = ncomps; cptr = *savecomp++; nxtbuf++, i--)
 256         free (cptr->c_text);
 257     while (i-- > 0)
 258         free (*nxtbuf++);
 259     free ((char *) compbuffers);
 260     free ((char *) used_buf);
 261 }
 262
 263
 264 void
 265 done (int status)
 266 {
 267     if (backup[0])
 268         unlink (backup);
 269     if (drft[0])
 270         unlink (drft);
 271     if (tmpfil[0])
 272         unlink (tmpfil);
 273
 274     exit (status ? RCV_MBX : RCV_MOK);
 275 }