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