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