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