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