diplodocus.org Git - nmh/blob - uip/mhn.c

   1
   2 /*
   3  * mhn.c -- display, list, cache, or store the contents of MIME messages
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <fcntl.h>
  12 #include <h/signals.h>
  13 #include <h/md5.h>
  14 #include <h/mts.h>
  15 #include <h/tws.h>
  16 #include <h/mime.h>
  17 #include <h/mhparse.h>
  18 #include <h/mhcachesbr.h>
  19 #include <h/utils.h>
  20
  21 #define MHN_SWITCHES \
  22     X("auto", 0, AUTOSW) \
  23     X("noauto", 0, NAUTOSW) \
  24     X("cache", 0, CACHESW) \
  25     X("nocache", 0, NCACHESW) \
  26     X("check", 0, CHECKSW) \
  27     X("nocheck", 0, NCHECKSW) \
  28     X("headers", 0, HEADSW) \
  29     X("noheaders", 0, NHEADSW) \
  30     X("list", 0, LISTSW) \
  31     X("nolist", 0, NLISTSW) \
  32     X("pause", 0, PAUSESW) \
  33     X("nopause", 0, NPAUSESW) \
  34     X("realsize", 0, SIZESW) \
  35     X("norealsize", 0, NSIZESW) \
  36     X("serialonly", 0, SERIALSW) \
  37     X("noserialonly", 0, NSERIALSW) \
  38     X("show", 0, SHOWSW) \
  39     X("noshow", 0, NSHOWSW) \
  40     X("store", 0, STORESW) \
  41     X("nostore", 0, NSTORESW) \
  42     X("verbose", 0, VERBSW) \
  43     X("noverbose", 0, NVERBSW) \
  44     X("file file", 0, FILESW) \
  45     X("form formfile", 0, FORMSW) \
  46     X("part number", 0, PARTSW) \
  47     X("type content", 0, TYPESW) \
  48     X("rcache policy", 0, RCACHESW) \
  49     X("wcache policy", 0, WCACHESW) \
  50     X("version", 0, VERSIONSW) \
  51     X("help", 0, HELPSW) \
  52     /*                                  \
  53      * for debugging                    \
  54      */                                 \
  55     X("debug", -5, DEBUGSW) \
  56     /*                                  \
  57      * switches for moreproc/mhlproc    \
  58      */                                 \
  59     X("moreproc program", -4, PROGSW) \
  60     X("nomoreproc", -3, NPROGSW) \
  61     X("length lines", -4, LENSW) \
  62     X("width columns", -4, WIDTHSW) \
  63     /*                                  \
  64      * switches for mhbuild             \
  65      */                                 \
  66     X("build", -5, BUILDSW) \
  67     X("nobuild", -7, NBUILDSW) \
  68     X("rfc934mode", -10, RFC934SW) \
  69     X("norfc934mode", -12, NRFC934SW) \
  70
  71 #define X(sw, minchars, id) id,
  72 DEFINE_SWITCH_ENUM(MHN);
  73 #undef X
  74
  75 #define X(sw, minchars, id) { sw, minchars, id },
  76 DEFINE_SWITCH_ARRAY(MHN, switches);
  77 #undef X
  78
  79
  80 /* mhcachesbr.c */
  81 extern int rcachesw;
  82 extern int wcachesw;
  83 extern char *cache_public;
  84 extern char *cache_private;
  85
  86 /* mhshowsbr.c */
  87 extern int pausesw;
  88 extern int serialsw;
  89 extern char *progsw;
  90 extern int nolist;
  91 extern int nomore;      /* flags for moreproc/header display */
  92 extern char *formsw;
  93
  94 /* mhstoresbr.c */
  95 extern int autosw;
  96 extern char *cwd;       /* cache current working directory */
  97
  98 /* mhmisc.c */
  99 extern int npart;
 100 extern int ntype;
 101 extern char *parts[NPARTS + 1];
 102 extern char *types[NTYPES + 1];
 103 extern int userrs;
 104
 105 int debugsw = 0;
 106 int verbosw = 0;
 107
 108 /*
 109  * variables for mhbuild (mhn -build)
 110  */
 111 static int buildsw  = 0;
 112 static int rfc934sw = 0;
 113
 114 /*
 115  * what action to take?
 116  */
 117 static int cachesw = 0;
 118 static int listsw  = 0;
 119 static int showsw  = 0;
 120 static int storesw = 0;
 121
 122 #define quitser pipeser
 123
 124 /* mhparse.c */
 125 CT parse_mime (char *);
 126
 127 /* mhmisc.c */
 128 int part_ok (CT, int);
 129 int type_ok (CT, int);
 130 void flush_errors (void);
 131
 132 /* mhshowsbr.c */
 133 void show_all_messages (CT *);
 134
 135 /* mhlistsbr.c */
 136 void list_all_messages (CT *, int, int, int, int);
 137
 138 /* mhstoresbr.c */
 139 void store_all_messages (CT *);
 140
 141 /* mhcachesbr.c */
 142 void cache_all_messages (CT *);
 143
 144 /* mhfree.c */
 145 extern CT *cts;
 146 void freects_done (int) NORETURN;
 147
 148 /*
 149  * static prototypes
 150  */
 151 static void pipeser (int);
 152
 153
 154 int
 155 main (int argc, char **argv)
 156 {
 157     int sizesw = 1, headsw = 1;
 158     int msgnum, *icachesw;
 159     char *cp, *file = NULL, *folder = NULL;
 160     char *maildir, buf[100], **argp;
 161     char **arguments;
 162     struct msgs_array msgs = { 0, 0, NULL };
 163     struct msgs *mp = NULL;
 164     CT ct, *ctp;
 165     FILE *fp;
 166
 167     if (nmh_init(argv[0], 1)) { return 1; }
 168
 169     done=freects_done;
 170
 171     arguments = getarguments (invo_name, argc, argv, 1);
 172     argp = arguments;
 173
 174     /*
 175      * Parse arguments
 176      */
 177     while ((cp = *argp++)) {
 178         if (*cp == '-') {
 179             switch (smatch (++cp, switches)) {
 180             case AMBIGSW:
 181                 ambigsw (cp, switches);
 182                 done (1);
 183             case UNKWNSW:
 184                 adios (NULL, "-%s unknown", cp);
 185
 186             case HELPSW:
 187                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 188                         invo_name);
 189                 print_help (buf, switches, 1);
 190                 done (0);
 191             case VERSIONSW:
 192                 print_version(invo_name);
 193                 done (0);
 194
 195             case AUTOSW:
 196                 autosw++;
 197                 continue;
 198             case NAUTOSW:
 199                 autosw = 0;
 200                 continue;
 201
 202             case CACHESW:
 203                 cachesw++;
 204                 continue;
 205             case NCACHESW:
 206                 cachesw = 0;
 207                 continue;
 208
 209             case RCACHESW:
 210                 icachesw = &rcachesw;
 211                 goto do_cache;
 212             case WCACHESW:
 213                 icachesw = &wcachesw;
 214 do_cache:
 215                 if (!(cp = *argp++) || *cp == '-')
 216                     adios (NULL, "missing argument to %s", argp[-2]);
 217                 switch (*icachesw = smatch (cp, caches)) {
 218                 case AMBIGSW:
 219                     ambigsw (cp, caches);
 220                     done (1);
 221                 case UNKWNSW:
 222                     adios (NULL, "%s unknown", cp);
 223                 default:
 224                     break;
 225                 }
 226                 continue;
 227
 228             case CHECKSW:
 229                 checksw++;
 230                 continue;
 231             case NCHECKSW:
 232                 checksw = 0;
 233                 continue;
 234
 235             case HEADSW:
 236                 headsw = 1;
 237                 continue;
 238             case NHEADSW:
 239                 headsw = 0;
 240                 continue;
 241
 242             case LISTSW:
 243                 listsw = 1;
 244                 continue;
 245             case NLISTSW:
 246                 listsw = 0;
 247                 continue;
 248
 249             case PAUSESW:
 250                 pausesw = 1;
 251                 continue;
 252             case NPAUSESW:
 253                 pausesw = 0;
 254                 continue;
 255
 256             case SERIALSW:
 257                 serialsw = 1;
 258                 continue;
 259             case NSERIALSW:
 260                 serialsw = 0;
 261                 continue;
 262
 263             case SHOWSW:
 264                 showsw = 1;
 265                 continue;
 266             case NSHOWSW:
 267                 showsw = 0;
 268                 continue;
 269
 270             case SIZESW:
 271                 sizesw = 1;
 272                 continue;
 273             case NSIZESW:
 274                 sizesw = 0;
 275                 continue;
 276
 277             case STORESW:
 278                 storesw = 1;
 279                 continue;
 280             case NSTORESW:
 281                 storesw = 0;
 282                 continue;
 283
 284             case PARTSW:
 285                 if (!(cp = *argp++) || *cp == '-')
 286                     adios (NULL, "missing argument to %s", argp[-2]);
 287                 if (npart >= NPARTS)
 288                     adios (NULL, "too many parts (starting with %s), %d max",
 289                            cp, NPARTS);
 290                 parts[npart++] = cp;
 291                 continue;
 292
 293             case TYPESW:
 294                 if (!(cp = *argp++) || *cp == '-')
 295                     adios (NULL, "missing argument to %s", argp[-2]);
 296                 if (ntype >= NTYPES)
 297                     adios (NULL, "too many types (starting with %s), %d max",
 298                            cp, NTYPES);
 299                 types[ntype++] = cp;
 300                 continue;
 301
 302             case FILESW:
 303                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 304                     adios (NULL, "missing argument to %s", argp[-2]);
 305                 file = *cp == '-' ? cp : path (cp, TFILE);
 306                 continue;
 307
 308             case FORMSW:
 309                 if (!(cp = *argp++) || *cp == '-')
 310                     adios (NULL, "missing argument to %s", argp[-2]);
 311                 if (formsw)
 312                     free (formsw);
 313                 formsw = getcpy (etcpath (cp));
 314                 continue;
 315
 316             /*
 317              * Switches for moreproc/mhlproc
 318              */
 319             case PROGSW:
 320                 if (!(progsw = *argp++) || *progsw == '-')
 321                     adios (NULL, "missing argument to %s", argp[-2]);
 322                 continue;
 323             case NPROGSW:
 324                 nomore++;
 325                 continue;
 326
 327             case LENSW:
 328             case WIDTHSW:
 329                 if (!(cp = *argp++) || *cp == '-')
 330                     adios (NULL, "missing argument to %s", argp[-2]);
 331                 continue;
 332
 333             /*
 334              * Switches for mhbuild
 335              */
 336             case BUILDSW:
 337                 buildsw = 1;
 338                 continue;
 339             case NBUILDSW:
 340                 buildsw = 0;
 341                 continue;
 342             case RFC934SW:
 343                 rfc934sw = 1;
 344                 continue;
 345             case NRFC934SW:
 346                 rfc934sw = -1;
 347                 continue;
 348
 349             case VERBSW:
 350                 verbosw = 1;
 351                 continue;
 352             case NVERBSW:
 353                 verbosw = 0;
 354                 continue;
 355             case DEBUGSW:
 356                 debugsw = 1;
 357                 continue;
 358             }
 359         }
 360         if (*cp == '+' || *cp == '@') {
 361             if (folder)
 362                 adios (NULL, "only one folder at a time!");
 363             else
 364                 folder = pluspath (cp);
 365         } else
 366                 app_msgarg(&msgs, cp);
 367     }
 368
 369     /* null terminate the list of acceptable parts/types */
 370     parts[npart] = NULL;
 371     types[ntype] = NULL;
 372
 373     /*
 374      * Check if we've specified an additional profile
 375      */
 376     if ((cp = getenv ("MHN"))) {
 377         if ((fp = fopen (cp, "r"))) {
 378             readconfig ((struct node **) 0, fp, cp, 0);
 379             fclose (fp);
 380         } else {
 381             admonish ("", "unable to read $MHN profile (%s)", cp);
 382         }
 383     }
 384
 385     /*
 386      * Read the standard profile setup
 387      */
 388     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 389         readconfig ((struct node **) 0, fp, cp, 0);
 390         fclose (fp);
 391     }
 392
 393     /* Check for public cache location */
 394     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 395         cache_public = NULL;
 396
 397     /* Check for private cache location */
 398     if (!(cache_private = context_find (nmhprivcache)))
 399         cache_private = ".cache";
 400     cache_private = getcpy (m_maildir (cache_private));
 401
 402     /*
 403      * Cache the current directory before we do any chdirs()'s.
 404      */
 405     cwd = getcpy (pwd());
 406
 407     if (!context_find ("path"))
 408         free (path ("./", TFOLDER));
 409
 410     /*
 411      * Process a mhn composition file (mhn -build)
 412      */
 413     if (buildsw) {
 414         char *vec[MAXARGS];
 415         int vecp;
 416
 417         if (showsw || storesw || cachesw)
 418             adios (NULL, "cannot use -build with -show, -store, -cache");
 419         if (msgs.size < 1)
 420             adios (NULL, "need to specify a %s composition file", invo_name);
 421         if (msgs.size > 1)
 422             adios (NULL, "only one %s composition file at a time", invo_name);
 423
 424         vecp = 0;
 425         vec[vecp++] = "mhbuild";
 426
 427         if (rfc934sw == 1)
 428             vec[vecp++] = "-rfc934mode";
 429         else if (rfc934sw == -1)
 430             vec[vecp++] = "-norfc934mode";
 431
 432         vec[vecp++] = msgs.msgs[0];
 433         vec[vecp] = NULL;
 434
 435         execvp ("mhbuild", vec);
 436         fprintf (stderr, "unable to exec ");
 437         _exit (-1);
 438     }
 439
 440     /*
 441      * Process a mhn composition file (old MH style)
 442      */
 443     if (msgs.size == 1 && !folder && !npart && !cachesw
 444         && !showsw && !storesw && !ntype && !file
 445         && (cp = getenv ("mhdraft"))
 446         && strcmp (cp, msgs.msgs[0]) == 0) {
 447
 448         char *vec[MAXARGS];
 449         int vecp;
 450
 451         vecp = 0;
 452         vec[vecp++] = "mhbuild";
 453
 454         if (rfc934sw == 1)
 455             vec[vecp++] = "-rfc934mode";
 456         else if (rfc934sw == -1)
 457             vec[vecp++] = "-norfc934mode";
 458
 459         vec[vecp++] = cp;
 460         vec[vecp] = NULL;
 461
 462         execvp ("mhbuild", vec);
 463         fprintf (stderr, "unable to exec ");
 464         _exit (-1);
 465     }
 466
 467     if (file && msgs.size)
 468         adios (NULL, "cannot specify msg and file at same time!");
 469
 470     /*
 471      * check if message is coming from file
 472      */
 473     if (file) {
 474         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 475             adios (NULL, "out of memory");
 476         ctp = cts;
 477
 478         if ((ct = parse_mime (file)))
 479             *ctp++ = ct;
 480     } else {
 481         /*
 482          * message(s) are coming from a folder
 483          */
 484         if (!msgs.size)
 485             app_msgarg(&msgs, "cur");
 486         if (!folder)
 487             folder = getfolder (1);
 488         maildir = m_maildir (folder);
 489
 490         if (chdir (maildir) == NOTOK)
 491             adios (maildir, "unable to change directory to");
 492
 493         /* read folder and create message structure */
 494         if (!(mp = folder_read (folder, 1)))
 495             adios (NULL, "unable to read folder %s", folder);
 496
 497         /* check for empty folder */
 498         if (mp->nummsg == 0)
 499             adios (NULL, "no messages in %s", folder);
 500
 501         /* parse all the message ranges/sequences and set SELECTED */
 502         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 503             if (!m_convert (mp, msgs.msgs[msgnum]))
 504                 done (1);
 505         seq_setprev (mp);       /* set the previous-sequence */
 506
 507         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 508             adios (NULL, "out of memory");
 509         ctp = cts;
 510
 511         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 512             if (is_selected(mp, msgnum)) {
 513                 char *msgnam;
 514
 515                 msgnam = m_name (msgnum);
 516                 if ((ct = parse_mime (msgnam)))
 517                     *ctp++ = ct;
 518             }
 519         }
 520     }
 521
 522     if (!*cts)
 523         done (1);
 524
 525     /*
 526      * You can't give more than one of these flags
 527      * at a time.
 528      */
 529     if (showsw + listsw + storesw + cachesw > 1)
 530         adios (NULL, "can only use one of -show, -list, -store, -cache at same time");
 531
 532     /* If no action is specified, assume -show */
 533     if (!listsw && !showsw && !storesw && !cachesw)
 534         showsw = 1;
 535
 536     userrs = 1;
 537     SIGNAL (SIGQUIT, quitser);
 538     SIGNAL (SIGPIPE, pipeser);
 539
 540     /*
 541      * Get the associated umask for the relevant contents.
 542      */
 543     for (ctp = cts; *ctp; ctp++) {
 544         struct stat st;
 545
 546         ct = *ctp;
 547         if (type_ok (ct, 1) && !ct->c_umask) {
 548             if (stat (ct->c_file, &st) != NOTOK)
 549                 ct->c_umask = ~(st.st_mode & 0777);
 550             else
 551                 ct->c_umask = ~m_gmprot();
 552         }
 553     }
 554
 555     /*
 556      * List the message content
 557      */
 558     if (listsw)
 559         list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 560
 561     /*
 562      * Store the message content
 563      */
 564     if (storesw)
 565         store_all_messages (cts);
 566
 567     /*
 568      * Cache the message content
 569      */
 570     if (cachesw)
 571         cache_all_messages (cts);
 572
 573     /*
 574      * Show the message content
 575      */
 576     if (showsw)
 577         show_all_messages (cts);
 578
 579     /* Now free all the structures for the content */
 580     for (ctp = cts; *ctp; ctp++)
 581         free_content (*ctp);
 582
 583     free ((char *) cts);
 584     cts = NULL;
 585
 586     /* If reading from a folder, do some updating */
 587     if (mp) {
 588         context_replace (pfolder, folder);/* update current folder  */
 589         seq_setcur (mp, mp->hghsel);      /* update current message */
 590         seq_save (mp);                    /* synchronize sequences  */
 591         context_save ();                  /* save the context file  */
 592     }
 593
 594     done (0);
 595     return 1;
 596 }
 597
 598
 599 static void
 600 pipeser (int i)
 601 {
 602     if (i == SIGQUIT) {
 603         fflush (stdout);
 604         fprintf (stderr, "\n");
 605         fflush (stderr);
 606     }
 607
 608     done (1);
 609     /* NOTREACHED */
 610 }