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/utils.h>
  14
  15 static struct swit switches[] = {
  16 #define FORMSW  0
  17         { "form formfile",  4 },
  18 #define VERSIONSW  1
  19         { "version", 0 },
  20 #define HELPSW  2
  21         { "help", 0 },
  22         { NULL, 0 }
  23 };
  24
  25 static char backup[BUFSIZ] = "";
  26 static char drft[BUFSIZ] = "";
  27 static char tmpfil[BUFSIZ] = "";
  28
  29 /*
  30 ** prototypes
  31 */
  32 static void rcvdistout(FILE *, char *, char *);
  33 static void unlink_done(int) NORETURN;
  34
  35
  36 int
  37 main(int argc, char **argv)
  38 {
  39         int vecp = 1;
  40         char *addrs = NULL, *cp, *form = NULL, buf[BUFSIZ];
  41         char **argp, **arguments, *vec[MAXARGS];
  42         FILE *fp;
  43         char *tfile = NULL;
  44
  45         done=unlink_done;
  46
  47 #ifdef LOCALE
  48         setlocale(LC_ALL, "");
  49 #endif
  50         invo_name = mhbasename(argv[0]);
  51
  52         /* read user profile/context */
  53         context_read();
  54
  55         arguments = getarguments(invo_name, argc, argv, 1);
  56         argp = arguments;
  57
  58         while ((cp = *argp++)) {
  59                 if (*cp == '-') {
  60                         switch (smatch(++cp, switches)) {
  61                         case AMBIGSW:
  62                                 ambigsw(cp, switches);
  63                                 done(1);
  64                         case UNKWNSW:
  65                                 vec[vecp++] = --cp;
  66                                 continue;
  67
  68                         case HELPSW:
  69                                 snprintf(buf, sizeof(buf), "%s [switches] [switches for postproc] address ...", invo_name);
  70                                 print_help(buf, switches, 1);
  71                                 done(1);
  72                         case VERSIONSW:
  73                                 print_version(invo_name);
  74                                 done(1);
  75
  76                         case FORMSW:
  77                                 if (!(form = *argp++) || *form == '-') {
  78                                         adios(NULL, "missing argument to %s",
  79                                                         argp[-2]);
  80                                 }
  81                                 continue;
  82                         }
  83                 }
  84                 addrs = addrs ? add(cp, add(", ", addrs)) : getcpy(cp);
  85         }
  86
  87         if (!addrs) {
  88                 adios(NULL, "usage: %s [switches] [switches for postproc] address ...", invo_name);
  89         }
  90
  91         umask(~m_gmprot());
  92
  93         tfile = m_mktemp2(NULL, invo_name, NULL, &fp);
  94         if (tfile == NULL) adios("rcvdist", "unable to create temporary file");
  95         strncpy(tmpfil, tfile, sizeof(tmpfil));
  96
  97         cpydata(fileno(stdin), fileno(fp), "message", tmpfil);
  98         fseek(fp, 0L, SEEK_SET);
  99
 100         tfile = m_mktemp2(NULL, invo_name, NULL, NULL);
 101         if (tfile == NULL) adios("forw", "unable to create temporary file");
 102         strncpy(drft, tfile, sizeof(tmpfil));
 103
 104         rcvdistout(fp, form, addrs);
 105         fclose(fp);
 106
 107         if (distout(drft, tmpfil, backup) == NOTOK) {
 108                 done(1);
 109         }
 110
 111         vec[0] = mhbasename(postproc);
 112         vec[vecp++] = "-dist";
 113         vec[vecp++] = drft;
 114         vec[vecp] = NULL;
 115
 116         execvp(postproc, vec);
 117         fprintf(stderr, "unable to exec ");
 118         perror(postproc);
 119         _exit(1);
 120         return 0;  /* dead code to satisfy the compiler */
 121 }
 122
 123 /* very similar to routine in replsbr.c */
 124
 125 #define SBUFSIZ 256
 126
 127 static struct format *fmt;
 128
 129 static int ncomps = 0;
 130 static char **compbuffers = 0;
 131 static struct comp **used_buf = 0;
 132
 133 static int dat[5];
 134
 135 static char *addrcomps[] = {
 136         "from",
 137         "sender",
 138         "reply-to",
 139         "to",
 140         "cc",
 141         "bcc",
 142         "resent-from",
 143         "resent-sender",
 144         "resent-reply-to",
 145         "resent-to",
 146         "resent-cc",
 147         "resent-bcc",
 148         NULL
 149 };
 150
 151
 152 static void
 153 rcvdistout(FILE *inb, char *form, char *addrs)
 154 {
 155         register int char_read = 0, format_len, i, state;
 156         register char *tmpbuf, **nxtbuf, **ap;
 157         char *cp, *scanl, name[NAMESZ];
 158         register struct comp *cptr, **savecomp;
 159         FILE *out;
 160
 161         if (!(out = fopen(drft, "w"))) {
 162                 adios(drft, "unable to create");
 163         }
 164
 165         /* get new format string */
 166         cp = new_fs(form ? form : rcvdistcomps, NULL);
 167         format_len = strlen(cp);
 168         ncomps = fmt_compile(cp, &fmt) + 1;
 169         if (!(nxtbuf = compbuffers =
 170                         (char **) calloc((size_t) ncomps, sizeof(char *)))) {
 171                 adios(NULL, "unable to allocate component buffers");
 172         }
 173         if (!(savecomp = used_buf =
 174                         (struct comp **) calloc((size_t) (ncomps + 1),
 175                         sizeof(struct comp *)))) {
 176                 adios(NULL, "unable to allocate component buffer stack");
 177         }
 178         savecomp += ncomps + 1;
 179         *--savecomp = 0;
 180
 181         for (i = ncomps; i--;) {
 182                 *nxtbuf++ = mh_xmalloc(SBUFSIZ);
 183         }
 184         nxtbuf = compbuffers;
 185         tmpbuf = *nxtbuf++;
 186
 187         for (ap = addrcomps; *ap; ap++) {
 188                 FINDCOMP(cptr, *ap);
 189                 if (cptr) {
 190                         cptr->c_type |= CT_ADDR;
 191                 }
 192         }
 193
 194         FINDCOMP(cptr, "addresses");
 195         if (cptr) {
 196                 cptr->c_text = addrs;
 197         }
 198         state = FLD;
 199         while (1) {
 200                 state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb);
 201                 switch (state) {
 202                 case FLD:
 203                 case FLDPLUS:
 204                         if ((cptr = wantcomp[CHASH(name)])) {
 205                                 do {
 206                                         if (mh_strcasecmp(name, cptr->c_name)!=0) {
 207                                                 continue;
 208                                         }
 209                                         char_read += msg_count;
 210                                         if (!cptr->c_text) {
 211                                                 cptr->c_text = tmpbuf;
 212                                                 *--savecomp = cptr;
 213                                                 tmpbuf = *nxtbuf++;
 214                                         } else {
 215                                                 cp = cptr->c_text;
 216                                                 i = strlen(cp) - 1;
 217                                                 if (cp[i] == '\n') {
 218                                                         if (cptr->c_type & CT_ADDR) {
 219                                                                 cp[i] = 0;
 220                                                                 cp = add(",\n\t", cp);
 221                                                         } else {
 222                                                                 cp = add("\t", cp);
 223                                                         }
 224                                                 }
 225                                                 cptr->c_text = add(tmpbuf, cp);
 226                                         }
 227                                         while (state == FLDPLUS) {
 228                                                 state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb);
 229                                                 cptr->c_text = add(tmpbuf, cptr->c_text);
 230                                                 char_read += msg_count;
 231                                         }
 232                                         break;
 233                                 } while ((cptr = cptr->c_next));
 234                         }
 235
 236                         while (state == FLDPLUS) {
 237                                 state = m_getfld(state, name, tmpbuf,
 238                                                 SBUFSIZ, inb);
 239                         }
 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         }
 264         fclose(out);
 265
 266         free(scanl);
 267         for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++);
 268                         nxtbuf++, i--) {
 269                 free(cptr->c_text);
 270         }
 271         while (i-- > 0) {
 272                 free(*nxtbuf++);
 273         }
 274         free(compbuffers);
 275         free(used_buf);
 276 }
 277
 278
 279 static void
 280 unlink_done(int status)
 281 {
 282         if (*backup) {
 283                 unlink(backup);
 284         }
 285         if (*drft) {
 286                 unlink(drft);
 287         }
 288         if (*tmpfil) {
 289                 unlink(tmpfil);
 290         }
 291         exit(status ? RCV_MBX : RCV_MOK);
 292 }