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",  0 },
  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();
  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         atexit(unlink_done);
  46
  47         setlocale(LC_ALL, "");
  48         invo_name = mhbasename(argv[0]);
  49
  50         /* read user profile/context */
  51         context_read();
  52
  53         arguments = getarguments(invo_name, argc, argv, 1);
  54         argp = arguments;
  55
  56         while ((cp = *argp++)) {
  57                 if (*cp == '-') {
  58                         switch (smatch(++cp, switches)) {
  59                         case AMBIGSW:
  60                                 ambigsw(cp, switches);
  61                                 exit(1);
  62                         case UNKWNSW:
  63                                 vec[vecp++] = --cp;
  64                                 continue;
  65
  66                         case HELPSW:
  67                                 snprintf(buf, sizeof(buf), "%s [switches] [switches for spost] address ...", invo_name);
  68                                 print_help(buf, switches, 1);
  69                                 exit(0);
  70                         case VERSIONSW:
  71                                 print_version(invo_name);
  72                                 exit(0);
  73
  74                         case FORMSW:
  75                                 if (!(form = *argp++) || *form == '-') {
  76                                         adios(NULL, "missing argument to %s",
  77                                                         argp[-2]);
  78                                 }
  79                                 continue;
  80                         }
  81                 }
  82                 addrs = addrs ? add(cp, add(", ", addrs)) : getcpy(cp);
  83         }
  84
  85         if (!addrs) {
  86                 adios(NULL, "usage: %s [switches] [switches for spost] address ...", invo_name);
  87         }
  88
  89         umask(~m_gmprot());
  90
  91         tfile = m_mktemp2(NULL, invo_name, NULL, &fp);
  92         if (tfile == NULL) adios("rcvdist", "unable to create temporary file");
  93         strncpy(tmpfil, tfile, sizeof(tmpfil));
  94
  95         cpydata(fileno(stdin), fileno(fp), "message", tmpfil);
  96         fseek(fp, 0L, SEEK_SET);
  97
  98         tfile = m_mktemp2(NULL, invo_name, NULL, NULL);
  99         if (tfile == NULL) adios("forw", "unable to create temporary file");
 100         strncpy(drft, tfile, sizeof(tmpfil));
 101
 102         rcvdistout(fp, form, addrs);
 103         fclose(fp);
 104
 105         if (distout(drft, tmpfil, backup) == NOTOK) {
 106                 /* sysexits.h EX_DATAERR */
 107                 exit(1);
 108         }
 109
 110         vec[0] = "spost";
 111         vec[vecp++] = "-dist";
 112         vec[vecp++] = drft;
 113         vec[vecp] = NULL;
 114
 115         execvp(*vec, vec);
 116         fprintf(stderr, "unable to exec ");
 117         perror(*vec);
 118         _exit(1);
 119         return 0;  /* dead code to satisfy the compiler */
 120 }
 121
 122 /* very similar to routine in replsbr.c */
 123
 124 #define SBUFSIZ 256
 125
 126 static struct format *fmt;
 127
 128 static int ncomps = 0;
 129 static char **compbuffers = 0;
 130 static struct comp **used_buf = 0;
 131
 132 static int dat[5];
 133
 134 static char *addrcomps[] = {
 135         "from",
 136         "sender",
 137         "reply-to",
 138         "to",
 139         "cc",
 140         "bcc",
 141         "resent-from",
 142         "resent-sender",
 143         "resent-reply-to",
 144         "resent-to",
 145         "resent-cc",
 146         "resent-bcc",
 147         NULL
 148 };
 149
 150
 151 static void
 152 rcvdistout(FILE *inb, char *form, char *addrs)
 153 {
 154         register int char_read = 0, format_len, i, state;
 155         register char *tmpbuf, **nxtbuf, **ap;
 156         char *cp, *scanl, name[NAMESZ];
 157         register struct comp *cptr, **savecomp;
 158         FILE *out;
 159
 160         if (!(out = fopen(drft, "w"))) {
 161                 adios(drft, "unable to create");
 162         }
 163
 164         /* get new format string */
 165         cp = new_fs(form ? form : rcvdistcomps, NULL);
 166         format_len = strlen(cp);
 167         ncomps = fmt_compile(cp, &fmt) + 1;
 168         if (!(nxtbuf = compbuffers =
 169                         (char **) calloc((size_t) ncomps, sizeof(char *)))) {
 170                 adios(NULL, "unable to allocate component buffers");
 171         }
 172         if (!(savecomp = used_buf =
 173                         (struct comp **) calloc((size_t) (ncomps + 1),
 174                         sizeof(struct comp *)))) {
 175                 adios(NULL, "unable to allocate component buffer stack");
 176         }
 177         savecomp += ncomps + 1;
 178         *--savecomp = 0;
 179
 180         for (i = ncomps; i--;) {
 181                 *nxtbuf++ = mh_xmalloc(SBUFSIZ);
 182         }
 183         nxtbuf = compbuffers;
 184         tmpbuf = *nxtbuf++;
 185
 186         for (ap = addrcomps; *ap; ap++) {
 187                 FINDCOMP(cptr, *ap);
 188                 if (cptr) {
 189                         cptr->c_type |= CT_ADDR;
 190                 }
 191         }
 192
 193         FINDCOMP(cptr, "addresses");
 194         if (cptr) {
 195                 cptr->c_text = addrs;
 196         }
 197         state = FLD;
 198         while (1) {
 199                 state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb);
 200                 switch (state) {
 201                 case FLD:
 202                 case FLDPLUS:
 203                         if ((cptr = wantcomp[CHASH(name)])) {
 204                                 do {
 205                                         if (mh_strcasecmp(name, cptr->c_name)!=0) {
 206                                                 continue;
 207                                         }
 208                                         char_read += msg_count;
 209                                         if (!cptr->c_text) {
 210                                                 cptr->c_text = tmpbuf;
 211                                                 *--savecomp = cptr;
 212                                                 tmpbuf = *nxtbuf++;
 213                                         } else {
 214                                                 cp = cptr->c_text;
 215                                                 i = strlen(cp) - 1;
 216                                                 if (cp[i] == '\n') {
 217                                                         if (cptr->c_type & CT_ADDR) {
 218                                                                 cp[i] = 0;
 219                                                                 cp = add(",\n\t", cp);
 220                                                         } else {
 221                                                                 cp = add("\t", cp);
 222                                                         }
 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                                 } while ((cptr = cptr->c_next));
 233                         }
 234
 235                         while (state == FLDPLUS) {
 236                                 state = m_getfld(state, name, tmpbuf,
 237                                                 SBUFSIZ, inb);
 238                         }
 239                         break;
 240
 241                 case LENERR:
 242                 case FMTERR:
 243                 case BODY:
 244                 case FILEEOF:
 245                         goto finished;
 246
 247                 default:
 248                         adios(NULL, "m_getfld() returned %d", state);
 249                 }
 250         }
 251 finished: ;
 252
 253         i = format_len + char_read + 256;
 254         scanl = mh_xmalloc((size_t) i + 2);
 255         dat[0] = dat[1] = dat[2] = dat[4] = 0;
 256         dat[3] = OUTPUTLINELEN;
 257         fmt_scan(fmt, scanl, i, dat);
 258         fputs(scanl, out);
 259
 260         if (ferror(out)) {
 261                 adios(drft, "error writing");
 262         }
 263         fclose(out);
 264
 265         free(scanl);
 266         for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++);
 267                         nxtbuf++, i--) {
 268                 free(cptr->c_text);
 269         }
 270         while (i-- > 0) {
 271                 free(*nxtbuf++);
 272         }
 273         free(compbuffers);
 274         free(used_buf);
 275 }
 276
 277
 278 static void
 279 unlink_done()
 280 {
 281         if (*backup) {
 282                 unlink(backup);
 283         }
 284         if (*drft) {
 285                 unlink(drft);
 286         }
 287         if (*tmpfil) {
 288                 unlink(tmpfil);
 289         }
 290 }