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_setprev.h"
  10 #include "sbr/seq_setcur.h"
  11 #include "sbr/seq_save.h"
  12 #include "sbr/smatch.h"
  13 #include "sbr/m_convert.h"
  14 #include "sbr/getfolder.h"
  15 #include "sbr/folder_read.h"
  16 #include "sbr/context_save.h"
  17 #include "sbr/context_replace.h"
  18 #include "sbr/context_find.h"
  19 #include "sbr/readconfig.h"
  20 #include "sbr/ambigsw.h"
  21 #include "sbr/path.h"
  22 #include "sbr/print_version.h"
  23 #include "sbr/print_help.h"
  24 #include "sbr/error.h"
  25 #include <fcntl.h>
  26 #include "h/signals.h"
  27 #include "h/md5.h"
  28 #include "h/mts.h"
  29 #include "h/tws.h"
  30 #include "h/fmt_scan.h"
  31 #include "h/mime.h"
  32 #include "h/mhparse.h"
  33 #include "h/mhcachesbr.h"
  34 #include "h/done.h"
  35 #include "h/utils.h"
  36 #include "mhmisc.h"
  37 #include "sbr/m_maildir.h"
  38 #include "mhfree.h"
  39 #include "mhshowsbr.h"
  40
  41 #define MHN_SWITCHES \
  42     X("auto", 0, AUTOSW) \
  43     X("noauto", 0, NAUTOSW) \
  44     X("cache", 0, CACHESW) \
  45     X("nocache", 0, NCACHESW) \
  46     X("check", 0, CHECKSW) \
  47     X("nocheck", 0, NCHECKSW) \
  48     X("headers", 0, HEADSW) \
  49     X("noheaders", 0, NHEADSW) \
  50     X("list", 0, LISTSW) \
  51     X("nolist", 0, NLISTSW) \
  52     X("realsize", 0, SIZESW) \
  53     X("norealsize", 0, NSIZESW) \
  54     X("show", 0, SHOWSW) \
  55     X("noshow", 0, NSHOWSW) \
  56     X("store", 0, STORESW) \
  57     X("nostore", 0, NSTORESW) \
  58     X("verbose", 0, VERBSW) \
  59     X("noverbose", 0, NVERBSW) \
  60     X("file file", 0, FILESW) \
  61     X("form formfile", 0, FORMSW) \
  62     X("part number", 0, PARTSW) \
  63     X("type content", 0, TYPESW) \
  64     X("rcache policy", 0, RCACHESW) \
  65     X("wcache policy", 0, WCACHESW) \
  66     X("version", 0, VERSIONSW) \
  67     X("help", 0, HELPSW) \
  68     /*                                  \
  69      * for debugging                    \
  70      */                                 \
  71     X("debug", -5, DEBUGSW) \
  72     /*                                  \
  73      * switches for moreproc/mhlproc    \
  74      */                                 \
  75     X("moreproc program", -4, PROGSW) \
  76     X("nomoreproc", -3, NPROGSW) \
  77     X("length lines", -4, LENSW) \
  78     X("width columns", -4, WIDTHSW) \
  79     /*                                  \
  80      * switches for mhbuild             \
  81      */                                 \
  82     X("build", -5, BUILDSW) \
  83     X("nobuild", -7, NBUILDSW) \
  84     X("rfc934mode", 0, RFC934SW) \
  85     X("norfc934mode", 0, NRFC934SW) \
  86
  87 #define X(sw, minchars, id) id,
  88 DEFINE_SWITCH_ENUM(MHN);
  89 #undef X
  90
  91 #define X(sw, minchars, id) { sw, minchars, id },
  92 DEFINE_SWITCH_ARRAY(MHN, switches);
  93 #undef X
  94
  95
  96 int debugsw = 0;
  97 int verbosw = 0;
  98
  99 /*
 100  * variables for mhbuild (mhn -build)
 101  */
 102 static bool buildsw;
 103 static int rfc934sw = 0;
 104
 105 /*
 106  * what action to take?
 107  */
 108 static bool cachesw;
 109 static bool listsw;
 110 static bool showsw;
 111 static bool storesw;
 112
 113 #define quitser pipeser
 114
 115 /*
 116  * static prototypes
 117  */
 118 static void pipeser (int);
 119
 120
 121 int
 122 main (int argc, char **argv)
 123 {
 124     bool sizesw = true;
 125     bool headsw = true;
 126     bool autosw = false;
 127     int msgnum, *icachesw;
 128     char *cp, *file = NULL, *folder = NULL;
 129     char *maildir, buf[100], **argp;
 130     char **arguments;
 131     char *cwd;
 132     struct msgs_array msgs = { 0, 0, NULL };
 133     struct msgs *mp = NULL;
 134     CT ct, *ctp;
 135     FILE *fp;
 136     mhstoreinfo_t info;
 137
 138     if (nmh_init(argv[0], true, true)) { return 1; }
 139
 140     set_done(freects_done);
 141
 142     arguments = getarguments (invo_name, argc, argv, 1);
 143     argp = arguments;
 144
 145     /*
 146      * Parse arguments
 147      */
 148     while ((cp = *argp++)) {
 149         if (*cp == '-') {
 150             switch (smatch (++cp, switches)) {
 151             case AMBIGSW:
 152                 ambigsw (cp, switches);
 153                 done (1);
 154             case UNKWNSW:
 155                 die("-%s unknown", cp);
 156
 157             case HELPSW:
 158                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 159                         invo_name);
 160                 print_help (buf, switches, 1);
 161                 done (0);
 162             case VERSIONSW:
 163                 print_version(invo_name);
 164                 done (0);
 165
 166             case AUTOSW:
 167                 autosw = true;
 168                 continue;
 169             case NAUTOSW:
 170                 autosw = false;
 171                 continue;
 172
 173             case CACHESW:
 174                 cachesw = true;
 175                 continue;
 176             case NCACHESW:
 177                 cachesw = false;
 178                 continue;
 179
 180             case RCACHESW:
 181                 icachesw = &rcachesw;
 182                 goto do_cache;
 183             case WCACHESW:
 184                 icachesw = &wcachesw;
 185 do_cache:
 186                 if (!(cp = *argp++) || *cp == '-')
 187                     die("missing argument to %s", argp[-2]);
 188                 switch (*icachesw = smatch (cp, cache_policy)) {
 189                 case AMBIGSW:
 190                     ambigsw (cp, cache_policy);
 191                     done (1);
 192                 case UNKWNSW:
 193                     die("%s unknown", cp);
 194                 default:
 195                     break;
 196                 }
 197                 continue;
 198
 199             case CHECKSW:
 200                 checksw++;
 201                 continue;
 202             case NCHECKSW:
 203                 checksw = 0;
 204                 continue;
 205
 206             case HEADSW:
 207                 headsw = true;
 208                 continue;
 209             case NHEADSW:
 210                 headsw = false;
 211                 continue;
 212
 213             case LISTSW:
 214                 listsw = true;
 215                 continue;
 216             case NLISTSW:
 217                 listsw = false;
 218                 continue;
 219
 220             case SHOWSW:
 221                 showsw = true;
 222                 continue;
 223             case NSHOWSW:
 224                 showsw = false;
 225                 continue;
 226
 227             case SIZESW:
 228                 sizesw = true;
 229                 continue;
 230             case NSIZESW:
 231                 sizesw = false;
 232                 continue;
 233
 234             case STORESW:
 235                 storesw = true;
 236                 continue;
 237             case NSTORESW:
 238                 storesw = false;
 239                 continue;
 240
 241             case PARTSW:
 242                 if (!(cp = *argp++) || *cp == '-')
 243                     die("missing argument to %s", argp[-2]);
 244                 if (npart >= NPARTS)
 245                     die("too many parts (starting with %s), %d max",
 246                            cp, NPARTS);
 247                 parts[npart++] = cp;
 248                 continue;
 249
 250             case TYPESW:
 251                 if (!(cp = *argp++) || *cp == '-')
 252                     die("missing argument to %s", argp[-2]);
 253                 if (ntype >= NTYPES)
 254                     die("too many types (starting with %s), %d max",
 255                            cp, NTYPES);
 256                 types[ntype++] = cp;
 257                 continue;
 258
 259             case FILESW:
 260                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 261                     die("missing argument to %s", argp[-2]);
 262                 file = *cp == '-' ? cp : path (cp, TFILE);
 263                 continue;
 264
 265             case FORMSW:
 266                 if (!(cp = *argp++) || *cp == '-')
 267                     die("missing argument to %s", argp[-2]);
 268                 free(formsw);
 269                 formsw = mh_xstrdup(etcpath(cp));
 270                 continue;
 271
 272             /*
 273              * Switches for moreproc/mhlproc
 274              */
 275             case PROGSW:
 276                 if (!(progsw = *argp++) || *progsw == '-')
 277                     die("missing argument to %s", argp[-2]);
 278                 continue;
 279             case NPROGSW:
 280                 nomore++;
 281                 continue;
 282
 283             case LENSW:
 284             case WIDTHSW:
 285                 if (!(cp = *argp++) || *cp == '-')
 286                     die("missing argument to %s", argp[-2]);
 287                 continue;
 288
 289             /*
 290              * Switches for mhbuild
 291              */
 292             case BUILDSW:
 293                 buildsw = true;
 294                 continue;
 295             case NBUILDSW:
 296                 buildsw = false;
 297                 continue;
 298             case RFC934SW:
 299                 rfc934sw = 1;
 300                 continue;
 301             case NRFC934SW:
 302                 rfc934sw = -1;
 303                 continue;
 304
 305             case VERBSW:
 306                 verbosw = 1;
 307                 continue;
 308             case NVERBSW:
 309                 verbosw = 0;
 310                 continue;
 311             case DEBUGSW:
 312                 debugsw = 1;
 313                 continue;
 314             }
 315         }
 316         if (*cp == '+' || *cp == '@') {
 317             if (folder)
 318                 die("only one folder at a time!");
 319             folder = pluspath (cp);
 320         } else
 321                 app_msgarg(&msgs, cp);
 322     }
 323
 324     /* null terminate the list of acceptable parts/types */
 325     parts[npart] = NULL;
 326     types[ntype] = NULL;
 327
 328     /*
 329      * Check if we've specified an additional profile
 330      */
 331     if ((cp = getenv ("MHN"))) {
 332         if ((fp = fopen (cp, "r"))) {
 333             readconfig(NULL, fp, cp, 0);
 334             fclose (fp);
 335         } else {
 336             admonish ("", "unable to read $MHN profile (%s)", cp);
 337         }
 338     }
 339
 340     /*
 341      * Read the standard profile setup
 342      */
 343     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 344         readconfig(NULL, fp, cp, 0);
 345         fclose (fp);
 346     }
 347
 348     /* Check for public cache location */
 349     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 350         cache_public = NULL;
 351
 352     /* Check for private cache location */
 353     if (!(cache_private = context_find (nmhprivcache)))
 354         cache_private = ".cache";
 355     cache_private = mh_xstrdup(m_maildir(cache_private));
 356
 357     /*
 358      * Cache the current directory before we do any chdirs()'s.
 359      */
 360     cwd = mh_xstrdup(pwd());
 361
 362     if (!context_find ("path"))
 363         free (path ("./", TFOLDER));
 364
 365     /*
 366      * Process a mhn composition file (mhn -build)
 367      */
 368     if (buildsw) {
 369         char *vec[MAXARGS];
 370         int vecp;
 371
 372         if (showsw || storesw || cachesw)
 373             die("cannot use -build with -show, -store, -cache");
 374         if (msgs.size < 1)
 375             die("need to specify a %s composition file", invo_name);
 376         if (msgs.size > 1)
 377             die("only one %s composition file at a time", invo_name);
 378
 379         vecp = 0;
 380         vec[vecp++] = "mhbuild";
 381
 382         if (rfc934sw == 1)
 383             vec[vecp++] = "-rfc934mode";
 384         else if (rfc934sw == -1)
 385             vec[vecp++] = "-norfc934mode";
 386
 387         vec[vecp++] = msgs.msgs[0];
 388         vec[vecp] = NULL;
 389
 390         execvp ("mhbuild", vec);
 391         fprintf (stderr, "unable to exec ");
 392         _exit(1);
 393     }
 394
 395     /*
 396      * Process a mhn composition file (old MH style)
 397      */
 398     if (msgs.size == 1 && !folder && !npart && !cachesw
 399         && !showsw && !storesw && !ntype && !file
 400         && (cp = getenv ("mhdraft"))
 401         && strcmp (cp, msgs.msgs[0]) == 0) {
 402
 403         char *vec[MAXARGS];
 404         int vecp;
 405
 406         vecp = 0;
 407         vec[vecp++] = "mhbuild";
 408
 409         if (rfc934sw == 1)
 410             vec[vecp++] = "-rfc934mode";
 411         else if (rfc934sw == -1)
 412             vec[vecp++] = "-norfc934mode";
 413
 414         vec[vecp++] = cp;
 415         vec[vecp] = NULL;
 416
 417         execvp ("mhbuild", vec);
 418         fprintf (stderr, "unable to exec ");
 419         _exit(1);
 420     }
 421
 422     if (file && msgs.size)
 423         die("cannot specify msg and file at same time!");
 424
 425     /*
 426      * check if message is coming from file
 427      */
 428     if (file) {
 429         cts = mh_xcalloc(2, sizeof *cts);
 430         ctp = cts;
 431
 432         if ((ct = parse_mime (file)))
 433             *ctp++ = ct;
 434     } else {
 435         /*
 436          * message(s) are coming from a folder
 437          */
 438         if (!msgs.size)
 439             app_msgarg(&msgs, "cur");
 440         if (!folder)
 441             folder = getfolder (1);
 442         maildir = m_maildir (folder);
 443
 444         if (chdir (maildir) == NOTOK)
 445             adios (maildir, "unable to change directory to");
 446
 447         /* read folder and create message structure */
 448         if (!(mp = folder_read (folder, 1)))
 449             die("unable to read folder %s", folder);
 450
 451         /* check for empty folder */
 452         if (mp->nummsg == 0)
 453             die("no messages in %s", folder);
 454
 455         /* parse all the message ranges/sequences and set SELECTED */
 456         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 457             if (!m_convert (mp, msgs.msgs[msgnum]))
 458                 done (1);
 459         seq_setprev (mp);       /* set the previous-sequence */
 460
 461         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 462         ctp = cts;
 463
 464         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 465             if (is_selected(mp, msgnum)) {
 466                 char *msgnam;
 467
 468                 msgnam = m_name (msgnum);
 469                 if ((ct = parse_mime (msgnam)))
 470                     *ctp++ = ct;
 471             }
 472         }
 473     }
 474
 475     if (!*cts)
 476         done (1);
 477
 478     /*
 479      * You can't give more than one of these flags
 480      * at a time.
 481      */
 482     if (showsw + listsw + storesw + cachesw > 1)
 483         die("can only use one of -show, -list, -store, -cache at same time");
 484
 485     /* If no action is specified, assume -show */
 486     if (!listsw && !showsw && !storesw && !cachesw)
 487         showsw = true;
 488
 489     userrs = true;
 490     SIGNAL (SIGQUIT, quitser);
 491     SIGNAL (SIGPIPE, pipeser);
 492
 493     /*
 494      * Get the associated umask for the relevant contents.
 495      */
 496     for (ctp = cts; *ctp; ctp++) {
 497         struct stat st;
 498
 499         ct = *ctp;
 500         if (type_ok (ct, 1) && !ct->c_umask) {
 501             if (stat (ct->c_file, &st) != NOTOK)
 502                 ct->c_umask = ~(st.st_mode & 0777);
 503             else
 504                 ct->c_umask = ~m_gmprot();
 505         }
 506     }
 507
 508     /*
 509      * List the message content
 510      */
 511     if (listsw)
 512         list_all_messages (cts, headsw, sizesw, verbosw, debugsw, 0);
 513
 514     /*
 515      * Store the message content
 516      */
 517     if (storesw) {
 518         info = mhstoreinfo_create (cts, cwd, "always", autosw, verbosw);;
 519         store_all_messages (info);
 520         mhstoreinfo_free (info);
 521     }
 522
 523     /* If reading from a folder, do some updating */
 524     if (mp) {
 525         context_replace (pfolder, folder);/* update current folder  */
 526         seq_setcur (mp, mp->hghsel);      /* update current message */
 527         seq_save (mp);                    /* synchronize sequences  */
 528         context_save ();                  /* save the context file  */
 529     }
 530
 531     /*
 532      * Cache the message content
 533      */
 534     if (cachesw)
 535         cache_all_messages (cts);
 536
 537     /*
 538      * Show the message content
 539      */
 540     if (showsw)
 541         show_all_messages (cts, 0, 0, 0);
 542
 543     /* Now free all the structures for the content */
 544     for (ctp = cts; *ctp; ctp++)
 545         free_content (*ctp);
 546
 547     free (cts);
 548     cts = NULL;
 549
 550     done (0);
 551     return 1;
 552 }
 553
 554
 555 static void
 556 pipeser (int i)
 557 {
 558     if (i == SIGQUIT) {
 559         fflush (stdout);
 560         fprintf (stderr, "\n");
 561         fflush (stderr);
 562     }
 563
 564     done (1);
 565     /* NOTREACHED */
 566 }