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         arguments = getarguments(invo_name, argc, argv, 1);
  58         argp = arguments;
  59
  60         while ((cp = *argp++)) {
  61                 if (*cp == '-') {
  62                         switch (smatch(++cp, switches)) {
  63                         case AMBIGSW:
  64                                 ambigsw(cp, switches);
  65                                 done(1);
  66                         case UNKWNSW:
  67                                 vec[vecp++] = --cp;
  68                                 continue;
  69
  70                         case HELPSW:
  71                                 snprintf(buf, sizeof(buf), "%s [switches] [switches for postproc] address ...", invo_name);
  72                                 print_help(buf, switches, 1);
  73                                 done(1);
  74                         case VERSIONSW:
  75                                 print_version(invo_name);
  76                                 done(1);
  77
  78                         case FORMSW:
  79                                 if (!(form = *argp++) || *form == '-')
  80                                         adios(NULL, "missing argument to %s",
  81                                                         argp[-2]);
  82                                 continue;
  83                         }
  84                 }
  85                 addrs = addrs ? add(cp, add(", ", addrs)) : getcpy(cp);
  86         }
  87
  88         if (addrs == NULL)
  89                 adios(NULL, "usage: %s [switches] [switches for postproc] address ...", invo_name);
  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         vec[0] = mhbasename(postproc);
 111         vec[vecp++] = "-dist";
 112         vec[vecp++] = drft;
 113         vec[vecp] = NULL;
 114
 115         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 116                 sleep(5);
 117         switch (child_id) {
 118         case NOTOK:
 119                 admonish(NULL, "unable to fork");/* fall */
 120         case OK:
 121                 execvp(postproc, vec);
 122                 fprintf(stderr, "unable to exec ");
 123                 perror(postproc);
 124                 _exit(1);
 125
 126         default:
 127                 done(pidXwait(child_id, postproc));
 128         }
 129
 130         return 0;  /* dead code to satisfy the compiler */
 131 }
 132
 133 /* very similar to routine in replsbr.c */
 134
 135 #define SBUFSIZ 256
 136
 137 static struct format *fmt;
 138
 139 static int ncomps = 0;
 140 static char **compbuffers = 0;
 141 static struct comp **used_buf = 0;
 142
 143 static int dat[5];
 144
 145 static char *addrcomps[] = {
 146         "from",
 147         "sender",
 148         "reply-to",
 149         "to",
 150         "cc",
 151         "bcc",
 152         "resent-from",
 153         "resent-sender",
 154         "resent-reply-to",
 155         "resent-to",
 156         "resent-cc",
 157         "resent-bcc",
 158         NULL
 159 };
 160
 161
 162 static void
 163 rcvdistout(FILE *inb, char *form, char *addrs)
 164 {
 165         register int char_read = 0, format_len, i, state;
 166         register char *tmpbuf, **nxtbuf, **ap;
 167         char *cp, *scanl, name[NAMESZ];
 168         register struct comp *cptr, **savecomp;
 169         FILE *out;
 170
 171         if (!(out = fopen(drft, "w")))
 172                 adios(drft, "unable to create");
 173
 174         /* get new format string */
 175         cp = new_fs(form ? form : rcvdistcomps, NULL, NULL);
 176         format_len = strlen(cp);
 177         ncomps = fmt_compile(cp, &fmt) + 1;
 178         if (!(nxtbuf = compbuffers =
 179                         (char **) calloc((size_t) ncomps, sizeof(char *))))
 180                 adios(NULL, "unable to allocate component buffers");
 181         if (!(savecomp = used_buf =
 182                         (struct comp **) calloc((size_t) (ncomps + 1),
 183                         sizeof(struct comp *))))
 184                 adios(NULL, "unable to allocate component buffer stack");
 185         savecomp += ncomps + 1;
 186         *--savecomp = 0;
 187
 188         for (i = ncomps; i--;)
 189                 *nxtbuf++ = mh_xmalloc(SBUFSIZ);
 190         nxtbuf = compbuffers;
 191         tmpbuf = *nxtbuf++;
 192
 193         for (ap = addrcomps; *ap; ap++) {
 194                 FINDCOMP(cptr, *ap);
 195                 if (cptr)
 196                         cptr->c_type |= CT_ADDR;
 197         }
 198
 199         FINDCOMP(cptr, "addresses");
 200         if (cptr)
 201                 cptr->c_text = addrs;
 202
 203         for (state = FLD;;) {
 204                 switch (state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb)) {
 205                 case FLD:
 206                 case FLDPLUS:
 207                         if ((cptr = wantcomp[CHASH(name)]))
 208                                 do {
 209                                         if (!mh_strcasecmp(name, cptr->c_name)) {
 210                                                 char_read += msg_count;
 211                                                 if (!cptr->c_text) {
 212                                                         cptr->c_text = tmpbuf;
 213                                                         *--savecomp = cptr;
 214                                                         tmpbuf = *nxtbuf++;
 215                                                 } else {
 216                                                         i = strlen(cp = cptr->c_text) - 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                                                         cptr->c_text = add(tmpbuf, cp);
 225                                                 }
 226                                                 while (state == FLDPLUS) {
 227                                                         state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb);
 228                                                         cptr->c_text = add(tmpbuf, cptr->c_text);
 229                                                         char_read += msg_count;
 230                                                 }
 231                                                 break;
 232                                         }
 233                                 } while ((cptr = cptr->c_next));
 234
 235                         while (state == FLDPLUS)
 236                                 state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb);
 237                         break;
 238
 239                 case LENERR:
 240                 case FMTERR:
 241                 case BODY:
 242                 case FILEEOF:
 243                         goto finished;
 244
 245                 default:
 246                         adios(NULL, "m_getfld() returned %d", state);
 247                 }
 248         }
 249 finished: ;
 250
 251         i = format_len + char_read + 256;
 252         scanl = mh_xmalloc((size_t) i + 2);
 253         dat[0] = dat[1] = dat[2] = dat[4] = 0;
 254         dat[3] = OUTPUTLINELEN;
 255         fmt_scan(fmt, scanl, i, dat);
 256         fputs(scanl, out);
 257
 258         if (ferror(out))
 259                 adios(drft, "error writing");
 260         fclose(out);
 261
 262         free(scanl);
 263         for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++);
 264                         nxtbuf++, i--)
 265                 free(cptr->c_text);
 266         while (i-- > 0)
 267                 free(*nxtbuf++);
 268         free((char *) compbuffers);
 269         free((char *) used_buf);
 270 }
 271
 272
 273 static void
 274 unlink_done(int status)
 275 {
 276         if (backup[0])
 277                 unlink(backup);
 278         if (drft[0])
 279                 unlink(drft);
 280         if (tmpfil[0])
 281                 unlink(tmpfil);
 282
 283         exit(status ? RCV_MBX : RCV_MOK);
 284 }