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