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

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