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

   1 /*
   2 ** forw.c -- forward a message, or group of 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 <fcntl.h>
  11 #include <h/fmt_scan.h>
  12 #include <h/tws.h>
  13 #include <h/utils.h>
  14
  15
  16 #define IFORMAT  "digest-issue-%s"
  17 #define VFORMAT  "digest-volume-%s"
  18
  19 static struct swit switches[] = {
  20 #define ANNOSW  0
  21         { "annotate", 0 },
  22 #define NANNOSW  1
  23         { "noannotate", 0 },
  24 #define EDITRSW  2
  25         { "editor editor", 0 },
  26 #define NEDITSW  3
  27         { "noedit", 0 },
  28 #define FILTSW  4
  29         { "filter filterfile", 0 },
  30 #define FORMSW  5
  31         { "form formfile", 0 },
  32 #define FRMTSW  6
  33         { "format", 5 },
  34 #define NFRMTSW  7
  35         { "noformat", 7 },
  36 #define INPLSW  8
  37         { "inplace", 0 },
  38 #define NINPLSW  9
  39         { "noinplace", 0 },
  40 #define MIMESW  10
  41         { "mime", 0 },
  42 #define NMIMESW  11
  43         { "nomime", 0 },
  44 #define DGSTSW  12
  45         { "digest list", 0 },
  46 #define ISSUESW  13
  47         { "issue number", 0 },
  48 #define VOLUMSW  14
  49         { "volume number", 0 },
  50 #define WHATSW  15
  51         { "whatnowproc program", 0 },
  52 #define NWHATSW  16
  53         { "nowhatnowproc", 0 },
  54 #define BITSTUFFSW  17
  55         { "dashstuffing", 0 },  /* interface to mhl */
  56 #define NBITSTUFFSW  18
  57         { "nodashstuffing", 0 },
  58 #define VERSIONSW  19
  59         { "version", 0 },
  60 #define HELPSW  20
  61         { "help", 0 },
  62 #define FILESW  21
  63         { "file file", 4 },  /* interface from msh */
  64
  65 #ifdef MHE
  66 #define BILDSW  22
  67         { "build", 5 },  /* interface from mhe */
  68 #endif /* MHE */
  69
  70         { NULL, 0 }
  71 };
  72
  73 static char drft[BUFSIZ];
  74
  75 static char delim3[] =
  76         "\n------------------------------------------------------------\n\n";
  77 static char delim4[] = "\n------------------------------\n\n";
  78
  79
  80 static struct msgs *mp = NULL;  /* used a lot */
  81
  82
  83 /*
  84 ** static prototypes
  85 */
  86 static void mhl_draft(int, char *, int, int, char *, char *, int);
  87 static void copy_draft(int, char *, char *, int, int, int);
  88 static void add_forw_hdr(char *);
  89 static int build_form(char *, char *, int, int);
  90
  91
  92 int
  93 main(int argc, char **argv)
  94 {
  95         int msgp = 0, anot = 0, inplace = 1, mime = 0;
  96         int issue = 0, volume = 0, dashstuff = 0;
  97         int nedit = 0, nwhat = 0, in;
  98         int out, msgnum;
  99         char *cp, *cwd, *maildir;
 100         char *digest = NULL, *ed = NULL;
 101         char *file = NULL, *filter = NULL, *folder = NULL;
 102         char *form = NULL, buf[BUFSIZ], value[10];
 103         char **argp, **arguments, *msgs[MAXARGS];
 104
 105 #ifdef MHE
 106         int buildsw = 0;
 107 #endif /* MHE */
 108
 109 #ifdef LOCALE
 110         setlocale(LC_ALL, "");
 111 #endif
 112         invo_name = mhbasename(argv[0]);
 113
 114         /* read user profile/context */
 115         context_read();
 116
 117         arguments = getarguments(invo_name, argc, argv, 1);
 118         argp = arguments;
 119
 120         while ((cp = *argp++)) {
 121                 if (*cp == '-') {
 122                         switch (smatch(++cp, switches)) {
 123                         case AMBIGSW:
 124                                 ambigsw(cp, switches);
 125                                 done(1);
 126                         case UNKWNSW:
 127                                 adios(NULL, "-%s unknown", cp);
 128
 129                         case HELPSW:
 130                                 snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]", invo_name);
 131                                 print_help(buf, switches, 1);
 132                                 done(1);
 133                         case VERSIONSW:
 134                                 print_version(invo_name);
 135                                 done(1);
 136
 137                         case ANNOSW:
 138                                 anot++;
 139                                 continue;
 140                         case NANNOSW:
 141                                 anot = 0;
 142                                 continue;
 143
 144                         case EDITRSW:
 145                                 if (!(ed = *argp++) || *ed == '-')
 146                                         adios(NULL, "missing argument to %s",
 147                                                         argp[-2]);
 148                                 nedit = 0;
 149                                 continue;
 150                         case NEDITSW:
 151                                 nedit++;
 152                                 continue;
 153
 154                         case WHATSW:
 155                                 if (!(whatnowproc = *argp++) ||
 156                                                 *whatnowproc == '-')
 157                                         adios(NULL, "missing argument to %s",
 158                                                         argp[-2]);
 159                                 nwhat = 0;
 160                                 continue;
 161 #ifdef MHE
 162                         case BILDSW:
 163                                 buildsw++;  /* fall... */
 164 #endif /* MHE */
 165                         case NWHATSW:
 166                                 nwhat++;
 167                                 continue;
 168
 169                         case FILESW:
 170                                 if (file)
 171                                         adios(NULL, "only one file at a time!");
 172                                 if (!(cp = *argp++) || *cp == '-')
 173                                         adios(NULL, "missing argument to %s",
 174                                                         argp[-2]);
 175                                 file = getcpy(expanddir(cp));
 176                                 continue;
 177                         case FILTSW:
 178                                 if (!(cp = *argp++) || *cp == '-')
 179                                         adios(NULL, "missing argument to %s",
 180                                                         argp[-2]);
 181                                 filter = getcpy(etcpath(cp));
 182                                 mime = 0;
 183                                 continue;
 184                         case FORMSW:
 185                                 if (!(form = *argp++) || *form == '-')
 186                                         adios(NULL, "missing argument to %s",
 187                                                         argp[-2]);
 188                                 continue;
 189
 190                         case FRMTSW:
 191                                 filter = getcpy(etcpath(mhlforward));
 192                                 continue;
 193                         case NFRMTSW:
 194                                 filter = NULL;
 195                                 continue;
 196
 197                         case INPLSW:
 198                                 inplace++;
 199                                 continue;
 200                         case NINPLSW:
 201                                 inplace = 0;
 202                                 continue;
 203
 204                         case MIMESW:
 205                                 mime++;
 206                                 filter = NULL;
 207                                 continue;
 208                         case NMIMESW:
 209                                 mime = 0;
 210                                 continue;
 211
 212                         case DGSTSW:
 213                                 if (!(digest = *argp++) || *digest == '-')
 214                                         adios(NULL, "missing argument to %s",
 215                                                         argp[-2]);
 216                                 mime = 0;
 217                                 continue;
 218                         case ISSUESW:
 219                                 if (!(cp = *argp++) || *cp == '-')
 220                                         adios(NULL, "missing argument to %s",
 221                                                         argp[-2]);
 222                                 if ((issue = atoi(cp)) < 1)
 223                                         adios(NULL, "bad argument %s %s",
 224                                                         argp[-2], cp);
 225                                 continue;
 226                         case VOLUMSW:
 227                                 if (!(cp = *argp++) || *cp == '-')
 228                                         adios(NULL, "missing argument to %s",
 229                                                         argp[-2]);
 230                                 if ((volume = atoi(cp)) < 1)
 231                                         adios(NULL, "bad argument %s %s",
 232                                                         argp[-2], cp);
 233                                 continue;
 234
 235                         case BITSTUFFSW:
 236                                 dashstuff = 1;  /* trinary logic */
 237                                 continue;
 238                         case NBITSTUFFSW:
 239                                 dashstuff = -1;  /* trinary logic */
 240                                 continue;
 241                         }
 242                 }
 243                 if (*cp == '+' || *cp == '@') {
 244                         if (folder)
 245                                 adios(NULL, "only one folder at a time!");
 246                         else
 247                                 folder = getcpy(expandfol(cp));
 248                 } else {
 249                         msgs[msgp++] = cp;
 250                 }
 251         }
 252
 253         cwd = getcpy(pwd());
 254
 255         if (file && (msgp || folder))
 256                 adios(NULL, "can't mix files and folders/msgs");
 257
 258 #ifdef MHE
 259         strncpy(drft, buildsw ? toabsdir("draft")
 260                 : m_draft(seq_beyond), sizeof(drft));
 261 #else
 262         strncpy(drft, m_draft(seq_beyond), sizeof(drft));
 263 #endif /* MHE */
 264
 265         if (file) {
 266                 /*
 267                 ** Forwarding a file.
 268                 */
 269                 anot = 0;  /* don't want to annotate a file */
 270         } else {
 271                 /*
 272                 ** Forwarding a message.
 273                 */
 274                 if (!msgp)
 275                         msgs[msgp++] = seq_cur;
 276                 if (!folder)
 277                         folder = getcurfol();
 278                 maildir = toabsdir(folder);
 279
 280                 if (chdir(maildir) == NOTOK)
 281                         adios(maildir, "unable to change directory to");
 282
 283                 /* read folder and create message structure */
 284                 if (!(mp = folder_read(folder)))
 285                         adios(NULL, "unable to read folder %s", folder);
 286
 287                 /* check for empty folder */
 288                 if (mp->nummsg == 0)
 289                         adios(NULL, "no messages in %s", folder);
 290
 291                 /* parse all the message ranges/sequences and set SELECTED */
 292                 for (msgnum = 0; msgnum < msgp; msgnum++)
 293                         if (!m_convert(mp, msgs[msgnum]))
 294                                 done(1);
 295                 seq_setprev(mp);  /* set the previous sequence */
 296         }
 297
 298         if (filter && access(filter, R_OK) == NOTOK)
 299                 adios(filter, "unable to read");
 300
 301         /*
 302         ** Open form (component) file.
 303         */
 304         if (digest) {
 305                 if (issue == 0) {
 306                         snprintf(buf, sizeof(buf), IFORMAT, digest);
 307                         if (volume == 0 && (cp = context_find(buf))
 308                                         && ((issue = atoi(cp)) < 0))
 309                                 issue = 0;
 310                         issue++;
 311                 }
 312                 if (volume == 0)
 313                         snprintf(buf, sizeof(buf), VFORMAT, digest);
 314                 if ((cp = context_find(buf)) == NULL ||
 315                                 (volume = atoi(cp)) <= 0)
 316                         volume = 1;
 317                 if (!form)
 318                         form = digestcomps;
 319                 in = build_form(form, digest, volume, issue);
 320         } else
 321                 in = open_form(&form, forwcomps);
 322
 323         if ((out = creat(drft, m_gmprot())) == NOTOK)
 324                 adios(drft, "unable to create");
 325
 326         /*
 327         ** copy the components into the draft
 328         */
 329         cpydata(in, out, form, drft);
 330         close(in);
 331
 332         if (file) {
 333                 /* just copy the file into the draft */
 334                 if ((in = open(file, O_RDONLY)) == NOTOK)
 335                         adios(file, "unable to open");
 336                 cpydata(in, out, file, drft);
 337                 close(in);
 338                 close(out);
 339         } else {
 340                 /*
 341                 ** If filter file is defined, then format the
 342                 ** messages into the draft using mhlproc.
 343                 */
 344                 if (filter) {
 345                         mhl_draft(out, digest, volume, issue, drft, filter,
 346                                         dashstuff);
 347                         close(out);
 348                 } else if (mime) {
 349                         close(out);
 350                         add_forw_hdr(drft);
 351                 } else {
 352                         copy_draft(out, digest, drft, volume, issue,
 353                                         dashstuff);
 354                         close(out);
 355                 }
 356
 357                 if (digest) {
 358                         snprintf(buf, sizeof(buf), IFORMAT, digest);
 359                         snprintf(value, sizeof(value), "%d", issue);
 360                         context_replace(buf, getcpy(value));
 361                         snprintf(buf, sizeof(buf), VFORMAT, digest);
 362                         snprintf(value, sizeof(value), "%d", volume);
 363                         context_replace(buf, getcpy(value));
 364                 }
 365
 366                 context_replace(curfolder, folder); /* update current folder */
 367                 seq_setcur(mp, mp->lowsel);  /* update current message */
 368                 seq_save(mp);  /* synchronize sequences */
 369                 context_save();  /* save the context file */
 370         }
 371
 372         if (nwhat)
 373                 done(0);
 374         what_now(ed, nedit, NOUSE, drft, NULL, 0, mp,
 375                 anot ? "Forwarded" : NULL, inplace, cwd);
 376         done(1);
 377         return 1;
 378 }
 379
 380
 381 /*
 382 ** Filter the messages you are forwarding, into the
 383 ** draft calling the mhlproc, and reading its output
 384 ** from a pipe.
 385 */
 386 static void
 387 mhl_draft(int out, char *digest, int volume, int issue,
 388         char *file, char *filter, int dashstuff)
 389 {
 390         pid_t child_id;
 391         int i, msgnum, pd[2];
 392         char *vec[MAXARGS];
 393         char buf1[BUFSIZ];
 394         char buf2[BUFSIZ];
 395
 396         if (pipe(pd) == NOTOK)
 397                 adios("pipe", "unable to create");
 398
 399         vec[0] = mhbasename(mhlproc);
 400
 401         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 402                 sleep(5);
 403         switch (child_id) {
 404         case NOTOK:
 405                 adios("fork", "unable to");
 406
 407         case OK:
 408                 close(pd[0]);
 409                 dup2(pd[1], 1);
 410                 close(pd[1]);
 411
 412                 i = 1;
 413                 vec[i++] = "-forwall";
 414                 vec[i++] = "-form";
 415                 vec[i++] = filter;
 416
 417                 if (digest) {
 418                         vec[i++] = "-digest";
 419                         vec[i++] = digest;
 420                         vec[i++] = "-issue";
 421                         snprintf(buf1, sizeof(buf1), "%d", issue);
 422                         vec[i++] = buf1;
 423                         vec[i++] = "-volume";
 424                         snprintf(buf2, sizeof(buf2), "%d", volume);
 425                         vec[i++] = buf2;
 426                 }
 427
 428                 /*
 429                 ** Are we dashstuffing (quoting) the lines that begin
 430                 ** with `-'.  We use the mhl default (don't add any
 431                 ** flag) unless the user has specified a specific flag.
 432                 */
 433                 if (dashstuff > 0)
 434                         vec[i++] = "-dashstuffing";
 435                 else if (dashstuff < 0)
 436                         vec[i++] = "-nodashstuffing";
 437
 438                 if (mp->numsel >= MAXARGS - i)
 439                         adios(NULL, "more than %d messages for %s exec",
 440                                         MAXARGS - i, vec[0]);
 441
 442                 /*
 443                 ** Now add the message names to filter.  We can only
 444                 ** handle about 995 messages (because vec is fixed
 445                 ** size), but that should be plenty.
 446                 */
 447                 for (msgnum = mp->lowsel;
 448                                 msgnum <= mp->hghsel && i < sizeof(vec) - 1;
 449                                 msgnum++)
 450                         if (is_selected(mp, msgnum))
 451                                 vec[i++] = getcpy(m_name(msgnum));
 452                 vec[i] = NULL;
 453
 454                 execvp(mhlproc, vec);
 455                 fprintf(stderr, "unable to exec ");
 456                 perror(mhlproc);
 457                 _exit(-1);
 458
 459         default:
 460                 close(pd[1]);
 461                 cpydata(pd[0], out, vec[0], file);
 462                 close(pd[0]);
 463                 pidXwait(child_id, mhlproc);
 464                 break;
 465         }
 466 }
 467
 468
 469 /*
 470 ** Copy the messages into the draft.  The messages are
 471 ** not filtered through the mhlproc.  Do dashstuffing if
 472 ** necessary.
 473 */
 474 static void
 475 copy_draft(int out, char *digest, char *file, int volume, int issue,
 476                 int dashstuff)
 477 {
 478         int fd,i, msgcnt, msgnum;
 479         int len, buflen;
 480         register char *bp, *msgnam;
 481         char buffer[BUFSIZ];
 482
 483         msgcnt = 1;
 484         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 485                 if (is_selected(mp, msgnum)) {
 486                         if (digest) {
 487                                 strncpy(buffer, msgnum == mp->lowsel ?
 488                                         delim3 : delim4, sizeof(buffer));
 489                         } else {
 490                                 /* Get buffer ready to go */
 491                                 bp = buffer;
 492                                 buflen = sizeof(buffer);
 493
 494                                 strncpy(bp, "\n-------", buflen);
 495                                 len = strlen(bp);
 496                                 bp += len;
 497                                 buflen -= len;
 498
 499                                 if (msgnum == mp->lowsel) {
 500                                         snprintf(bp, buflen, " Forwarded Message%s", mp->numsel > 1 ? "s" : "");
 501                                 } else {
 502                                         snprintf(bp, buflen, " Message %d", msgcnt);
 503                                 }
 504                                 len = strlen(bp);
 505                                 bp += len;
 506                                 buflen -= len;
 507
 508                                 strncpy(bp, "\n\n", buflen);
 509                         }
 510                         write(out, buffer, strlen(buffer));
 511
 512                         if ((fd = open(msgnam = m_name (msgnum), O_RDONLY))
 513                                         == NOTOK) {
 514                                 admonish(msgnam, "unable to read message");
 515                                 continue;
 516                         }
 517
 518                         /*
 519                         ** Copy the message.  Add RFC934 quoting (dashstuffing)
 520                         ** unless given the -nodashstuffing flag.
 521                         */
 522                         if (dashstuff >= 0)
 523                                 cpydgst(fd, out, msgnam, file);
 524                         else
 525                                 cpydata(fd, out, msgnam, file);
 526
 527                         close(fd);
 528                         msgcnt++;
 529                 }
 530         }
 531
 532         if (digest) {
 533                 strncpy(buffer, delim4, sizeof(buffer));
 534         } else {
 535                 snprintf(buffer, sizeof(buffer),
 536                                 "\n------- End of Forwarded Message%s\n\n",
 537                                 mp->numsel > 1 ? "s" : "");
 538         }
 539         write(out, buffer, strlen(buffer));
 540
 541         if (digest) {
 542                 snprintf(buffer, sizeof(buffer),
 543                                 "End of %s Digest [Volume %d Issue %d]\n",
 544                                 digest, volume, issue);
 545                 i = strlen(buffer);
 546                 for (bp = buffer + i; i > 1; i--)
 547                         *bp++ = '*';
 548                 *bp++ = '\n';
 549                 *bp = 0;
 550                 write(out, buffer, strlen(buffer));
 551         }
 552 }
 553
 554
 555 /*
 556 ** Create an attachment header for the to be forward messages.
 557 */
 558 static void
 559 add_forw_hdr(char *draft)
 560 {
 561         int msgnum;
 562         char buffer[BUFSIZ];
 563
 564         snprintf(buffer, sizeof(buffer), "+%s", mp->foldpath);
 565         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 566                 if (!is_selected(mp, msgnum)) {
 567                         continue;
 568                 }
 569                 /* TODO: improve the code */
 570                 strncat(buffer, " ", sizeof(buffer)-strlen(buffer)-1);
 571                 strncat(buffer, m_name(msgnum),
 572                                 sizeof(buffer)-strlen(buffer)-1);
 573         }
 574         annotate(draft, attach_hdr, buffer, 1, 0, -2, 1);
 575 }
 576
 577
 578 static int
 579 build_form(char *form, char *digest, int volume, int issue)
 580 {
 581         int in;
 582         int fmtsize;
 583         register char *nfs;
 584         char *line, tmpfil[BUFSIZ];
 585         FILE *tmp;
 586         register struct comp *cptr;
 587         struct format *fmt;
 588         int dat[5];
 589         char *cp = NULL;
 590
 591         /* Get new format string */
 592         nfs = new_fs(form, NULL, NULL);
 593         fmtsize = strlen(nfs) + 256;
 594
 595         /* Compile format string */
 596         fmt_compile(nfs, &fmt);
 597
 598         FINDCOMP(cptr, "digest");
 599         if (cptr)
 600                 cptr->c_text = digest;
 601         FINDCOMP(cptr, "date");
 602         if (cptr)
 603                 cptr->c_text = getcpy(dtimenow(0));
 604
 605         dat[0] = issue;
 606         dat[1] = volume;
 607         dat[2] = 0;
 608         dat[3] = fmtsize;
 609         dat[4] = 0;
 610
 611         cp = m_mktemp2(NULL, invo_name, NULL, &tmp);
 612         if (cp == NULL) adios("forw", "unable to create temporary file");
 613         strncpy(tmpfil, cp, sizeof(tmpfil));
 614         unlink(tmpfil);
 615         if ((in = dup(fileno(tmp))) == NOTOK)
 616                 adios("dup", "unable to");
 617
 618         line = mh_xmalloc((unsigned) fmtsize);
 619         fmt_scan(fmt, line, fmtsize, dat);
 620         fputs(line, tmp);
 621         free(line);
 622         if (fclose(tmp))
 623                 adios(tmpfil, "error writing");
 624
 625         lseek(in, (off_t) 0, SEEK_SET);
 626         return in;
 627 }