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