git.marmaro.de Git - mmh/blob - uip/rcvdist.c

   1 /*
   2 ** rcvdist.c -- asynchronously redistribute messages
   3 **
   4 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   5 ** COPYRIGHT file in the root directory of the nmh distribution for
   6 ** complete copyright information.
   7 */
   8
   9 #include <h/mh.h>
  10 #include <h/fmt_scan.h>
  11 #include <h/rcvmail.h>
  12 #include <h/tws.h>
  13 #include <h/mts.h>
  14 #include <h/utils.h>
  15
  16 static struct swit switches[] = {
  17 #define FORMSW  0
  18         { "form formfile",  4 },
  19 #define VERSIONSW  1
  20         { "version", 0 },
  21 #define HELPSW  2
  22         { "help", 0 },
  23         { NULL, 0 }
  24 };
  25
  26 static char backup[BUFSIZ] = "";
  27 static char drft[BUFSIZ] = "";
  28 static char tmpfil[BUFSIZ] = "";
  29
  30 /*
  31 ** prototypes
  32 */
  33 static void rcvdistout(FILE *, char *, char *);
  34 static void unlink_done(int) NORETURN;
  35
  36
  37 int
  38 main(int argc, char **argv)
  39 {
  40         pid_t child_id;
  41         int i, vecp = 1;
  42         char *addrs = NULL, *cp, *form = NULL, buf[BUFSIZ];
  43         char **argp, **arguments, *vec[MAXARGS];
  44         FILE *fp;
  45         char *tfile = NULL;
  46
  47         done=unlink_done;
  48
  49 #ifdef LOCALE
  50         setlocale(LC_ALL, "");
  51 #endif
  52         invo_name = mhbasename(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), "%s [switches] [switches for postproc] address ...", invo_name);
  73                                 print_help(buf, switches, 1);
  74                                 done(1);
  75                         case VERSIONSW:
  76                                 print_version(invo_name);
  77                                 done(1);
  78
  79                         case FORMSW:
  80                                 if (!(form = *argp++) || *form == '-')
  81                                         adios(NULL, "missing argument to %s",
  82                                                         argp[-2]);
  83                                 continue;
  84                         }
  85                 }
  86                 addrs = addrs ? add(cp, add(", ", addrs)) : getcpy(cp);
  87         }
  88
  89         if (addrs == NULL)
  90                 adios(NULL, "usage: %s [switches] [switches for postproc] address ...", invo_name);
  91
  92         umask(~m_gmprot());
  93
  94         tfile = m_mktemp2(NULL, invo_name, NULL, &fp);
  95         if (tfile == NULL) adios("rcvdist", "unable to create temporary file");
  96         strncpy(tmpfil, tfile, sizeof(tmpfil));
  97
  98         cpydata(fileno(stdin), fileno(fp), "message", tmpfil);
  99         fseek(fp, 0L, SEEK_SET);
 100
 101         tfile = m_mktemp2(NULL, invo_name, NULL, NULL);
 102         if (tfile == NULL) adios("forw", "unable to create temporary file");
 103         strncpy(drft, tfile, sizeof(tmpfil));
 104
 105         rcvdistout(fp, form, addrs);
 106         fclose(fp);
 107
 108         if (distout(drft, tmpfil, backup) == NOTOK)
 109                 done(1);
 110
 111         vec[0] = mhbasename(postproc);
 112         vec[vecp++] = "-dist";
 113         vec[vecp++] = drft;
 114         vec[vecp] = NULL;
 115
 116         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 117                 sleep(5);
 118         switch (child_id) {
 119         case NOTOK:
 120                 admonish(NULL, "unable to fork");/* fall */
 121         case OK:
 122                 execvp(postproc, vec);
 123                 fprintf(stderr, "unable to exec ");
 124                 perror(postproc);
 125                 _exit(1);
 126
 127         default:
 128                 done(pidXwait(child_id, postproc));
 129         }
 130
 131         return 0;  /* dead code to satisfy the compiler */
 132 }
 133
 134 /* very similar to routine in replsbr.c */
 135
 136 #define SBUFSIZ 256
 137
 138 static int outputlinelen = OUTPUTLINELEN;
 139
 140 static struct format *fmt;
 141
 142 static int ncomps = 0;
 143 static char **compbuffers = 0;
 144 static struct comp **used_buf = 0;
 145
 146 static int dat[5];
 147
 148 static char *addrcomps[] = {
 149         "from",
 150         "sender",
 151         "reply-to",
 152         "to",
 153         "cc",
 154         "bcc",
 155         "resent-from",
 156         "resent-sender",
 157         "resent-reply-to",
 158         "resent-to",
 159         "resent-cc",
 160         "resent-bcc",
 161         NULL
 162 };
 163
 164
 165 static void
 166 rcvdistout(FILE *inb, char *form, char *addrs)
 167 {
 168         register int char_read = 0, format_len, i, state;
 169         register char *tmpbuf, **nxtbuf, **ap;
 170         char *cp, *scanl, name[NAMESZ];
 171         register struct comp *cptr, **savecomp;
 172         FILE *out;
 173
 174         if (!(out = fopen(drft, "w")))
 175                 adios(drft, "unable to create");
 176
 177         /* get new format string */
 178         cp = new_fs(form ? form : rcvdistcomps, NULL, NULL);
 179         format_len = strlen(cp);
 180         ncomps = fmt_compile(cp, &fmt) + 1;
 181         if (!(nxtbuf = compbuffers =
 182                         (char **) calloc((size_t) ncomps, sizeof(char *))))
 183                 adios(NULL, "unable to allocate component buffers");
 184         if (!(savecomp = used_buf =
 185                         (struct comp **) calloc((size_t) (ncomps + 1),
 186                         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                                                 } else {
 219                                                         i = strlen(cp = cptr->c_text) - 1;
 220                                                         if (cp[i] == '\n') {
 221                                                                 if (cptr->c_type & CT_ADDR) {
 222                                                                         cp[i] = 0;
 223                                                                         cp = add(",\n\t", cp);
 224                                                                 } else
 225                                                                         cp = add("\t", cp);
 226                                                         }
 227                                                         cptr->c_text = add(tmpbuf, cp);
 228                                                 }
 229                                                 while (state == FLDPLUS) {
 230                                                         state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb);
 231                                                         cptr->c_text = add(tmpbuf, cptr->c_text);
 232                                                         char_read += msg_count;
 233                                                 }
 234                                                 break;
 235                                         }
 236                                 } while ((cptr = cptr->c_next));
 237
 238                         while (state == FLDPLUS)
 239                                 state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb);
 240                         break;
 241
 242                 case LENERR:
 243                 case FMTERR:
 244                 case BODY:
 245                 case FILEEOF:
 246                         goto finished;
 247
 248                 default:
 249                         adios(NULL, "m_getfld() returned %d", state);
 250                 }
 251         }
 252 finished: ;
 253
 254         i = format_len + char_read + 256;
 255         scanl = mh_xmalloc((size_t) i + 2);
 256         dat[0] = dat[1] = dat[2] = dat[4] = 0;
 257         dat[3] = outputlinelen;
 258         fmt_scan(fmt, scanl, i, dat);
 259         fputs(scanl, out);
 260
 261         if (ferror(out))
 262                 adios(drft, "error writing");
 263         fclose(out);
 264
 265         free(scanl);
 266         for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++);
 267                         nxtbuf++, i--)
 268                 free(cptr->c_text);
 269         while (i-- > 0)
 270                 free(*nxtbuf++);
 271         free((char *) compbuffers);
 272         free((char *) used_buf);
 273 }
 274
 275
 276 static void
 277 unlink_done(int status)
 278 {
 279         if (backup[0])
 280                 unlink(backup);
 281         if (drft[0])
 282                 unlink(drft);
 283         if (tmpfil[0])
 284                 unlink(tmpfil);
 285
 286         exit(status ? RCV_MBX : RCV_MOK);
 287 }