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