diplodocus.org Git - nmh/blob - uip/mhn.c

   1
   2 /*
   3  * mhn.c -- display, list, cache, or store the contents of MIME messages
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <fcntl.h>
  12 #include <h/signals.h>
  13 #include <h/md5.h>
  14 #include <h/mts.h>
  15 #include <h/tws.h>
  16 #include <h/mime.h>
  17 #include <h/mhparse.h>
  18 #include <h/mhcachesbr.h>
  19 #include <h/utils.h>
  20
  21 #define MHN_SWITCHES \
  22     X("auto", 0, AUTOSW) \
  23     X("noauto", 0, NAUTOSW) \
  24     X("cache", 0, CACHESW) \
  25     X("nocache", 0, NCACHESW) \
  26     X("check", 0, CHECKSW) \
  27     X("nocheck", 0, NCHECKSW) \
  28     X("headers", 0, HEADSW) \
  29     X("noheaders", 0, NHEADSW) \
  30     X("list", 0, LISTSW) \
  31     X("nolist", 0, NLISTSW) \
  32     X("realsize", 0, SIZESW) \
  33     X("norealsize", 0, NSIZESW) \
  34     X("show", 0, SHOWSW) \
  35     X("noshow", 0, NSHOWSW) \
  36     X("store", 0, STORESW) \
  37     X("nostore", 0, NSTORESW) \
  38     X("verbose", 0, VERBSW) \
  39     X("noverbose", 0, NVERBSW) \
  40     X("file file", 0, FILESW) \
  41     X("form formfile", 0, FORMSW) \
  42     X("part number", 0, PARTSW) \
  43     X("type content", 0, TYPESW) \
  44     X("rcache policy", 0, RCACHESW) \
  45     X("wcache policy", 0, WCACHESW) \
  46     X("version", 0, VERSIONSW) \
  47     X("help", 0, HELPSW) \
  48     /*                                  \
  49      * for debugging                    \
  50      */                                 \
  51     X("debug", -5, DEBUGSW) \
  52     /*                                  \
  53      * switches for moreproc/mhlproc    \
  54      */                                 \
  55     X("moreproc program", -4, PROGSW) \
  56     X("nomoreproc", -3, NPROGSW) \
  57     X("length lines", -4, LENSW) \
  58     X("width columns", -4, WIDTHSW) \
  59     /*                                  \
  60      * switches for mhbuild             \
  61      */                                 \
  62     X("build", -5, BUILDSW) \
  63     X("nobuild", -7, NBUILDSW) \
  64     X("rfc934mode", 0, RFC934SW) \
  65     X("norfc934mode", 0, NRFC934SW) \
  66
  67 #define X(sw, minchars, id) id,
  68 DEFINE_SWITCH_ENUM(MHN);
  69 #undef X
  70
  71 #define X(sw, minchars, id) { sw, minchars, id },
  72 DEFINE_SWITCH_ARRAY(MHN, switches);
  73 #undef X
  74
  75
  76 /* mhcachesbr.c */
  77 extern int rcachesw;
  78 extern int wcachesw;
  79 extern char *cache_public;
  80 extern char *cache_private;
  81
  82 /* mhshowsbr.c */
  83 extern char *progsw;
  84 extern int nolist;
  85 extern int nomore;      /* flags for moreproc/header display */
  86 extern char *formsw;
  87
  88 /* mhmisc.c */
  89 extern int npart;
  90 extern int ntype;
  91 extern char *parts[NPARTS + 1];
  92 extern char *types[NTYPES + 1];
  93 extern int userrs;
  94
  95 int debugsw = 0;
  96 int verbosw = 0;
  97
  98 /*
  99  * variables for mhbuild (mhn -build)
 100  */
 101 static int buildsw  = 0;
 102 static int rfc934sw = 0;
 103
 104 /*
 105  * what action to take?
 106  */
 107 static int cachesw = 0;
 108 static int listsw  = 0;
 109 static int showsw  = 0;
 110 static int storesw = 0;
 111
 112 #define quitser pipeser
 113
 114 /* mhparse.c */
 115 CT parse_mime (char *);
 116
 117 /* mhmisc.c */
 118 int part_ok (CT);
 119 int type_ok (CT, int);
 120 void flush_errors (void);
 121
 122 /* mhcachesbr.c */
 123 void cache_all_messages (CT *);
 124
 125 /* mhfree.c */
 126 extern CT *cts;
 127 void freects_done (int) NORETURN;
 128
 129 /*
 130  * static prototypes
 131  */
 132 static void pipeser (int);
 133
 134
 135 int
 136 main (int argc, char **argv)
 137 {
 138     int sizesw = 1, headsw = 1, autosw = 0;
 139     int msgnum, *icachesw;
 140     char *cp, *file = NULL, *folder = NULL;
 141     char *maildir, buf[100], **argp;
 142     char **arguments;
 143     char *cwd;
 144     struct msgs_array msgs = { 0, 0, NULL };
 145     struct msgs *mp = NULL;
 146     CT ct, *ctp;
 147     FILE *fp;
 148     mhstoreinfo_t info;
 149
 150     if (nmh_init(argv[0], 1)) { return 1; }
 151
 152     done=freects_done;
 153
 154     arguments = getarguments (invo_name, argc, argv, 1);
 155     argp = arguments;
 156
 157     /*
 158      * Parse arguments
 159      */
 160     while ((cp = *argp++)) {
 161         if (*cp == '-') {
 162             switch (smatch (++cp, switches)) {
 163             case AMBIGSW:
 164                 ambigsw (cp, switches);
 165                 done (1);
 166             case UNKWNSW:
 167                 adios (NULL, "-%s unknown", cp);
 168
 169             case HELPSW:
 170                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 171                         invo_name);
 172                 print_help (buf, switches, 1);
 173                 done (0);
 174             case VERSIONSW:
 175                 print_version(invo_name);
 176                 done (0);
 177
 178             case AUTOSW:
 179                 autosw++;
 180                 continue;
 181             case NAUTOSW:
 182                 autosw = 0;
 183                 continue;
 184
 185             case CACHESW:
 186                 cachesw++;
 187                 continue;
 188             case NCACHESW:
 189                 cachesw = 0;
 190                 continue;
 191
 192             case RCACHESW:
 193                 icachesw = &rcachesw;
 194                 goto do_cache;
 195             case WCACHESW:
 196                 icachesw = &wcachesw;
 197 do_cache:
 198                 if (!(cp = *argp++) || *cp == '-')
 199                     adios (NULL, "missing argument to %s", argp[-2]);
 200                 switch (*icachesw = smatch (cp, caches)) {
 201                 case AMBIGSW:
 202                     ambigsw (cp, caches);
 203                     done (1);
 204                 case UNKWNSW:
 205                     adios (NULL, "%s unknown", cp);
 206                 default:
 207                     break;
 208                 }
 209                 continue;
 210
 211             case CHECKSW:
 212                 checksw++;
 213                 continue;
 214             case NCHECKSW:
 215                 checksw = 0;
 216                 continue;
 217
 218             case HEADSW:
 219                 headsw = 1;
 220                 continue;
 221             case NHEADSW:
 222                 headsw = 0;
 223                 continue;
 224
 225             case LISTSW:
 226                 listsw = 1;
 227                 continue;
 228             case NLISTSW:
 229                 listsw = 0;
 230                 continue;
 231
 232             case SHOWSW:
 233                 showsw = 1;
 234                 continue;
 235             case NSHOWSW:
 236                 showsw = 0;
 237                 continue;
 238
 239             case SIZESW:
 240                 sizesw = 1;
 241                 continue;
 242             case NSIZESW:
 243                 sizesw = 0;
 244                 continue;
 245
 246             case STORESW:
 247                 storesw = 1;
 248                 continue;
 249             case NSTORESW:
 250                 storesw = 0;
 251                 continue;
 252
 253             case PARTSW:
 254                 if (!(cp = *argp++) || *cp == '-')
 255                     adios (NULL, "missing argument to %s", argp[-2]);
 256                 if (npart >= NPARTS)
 257                     adios (NULL, "too many parts (starting with %s), %d max",
 258                            cp, NPARTS);
 259                 parts[npart++] = cp;
 260                 continue;
 261
 262             case TYPESW:
 263                 if (!(cp = *argp++) || *cp == '-')
 264                     adios (NULL, "missing argument to %s", argp[-2]);
 265                 if (ntype >= NTYPES)
 266                     adios (NULL, "too many types (starting with %s), %d max",
 267                            cp, NTYPES);
 268                 types[ntype++] = cp;
 269                 continue;
 270
 271             case FILESW:
 272                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 273                     adios (NULL, "missing argument to %s", argp[-2]);
 274                 file = *cp == '-' ? cp : path (cp, TFILE);
 275                 continue;
 276
 277             case FORMSW:
 278                 if (!(cp = *argp++) || *cp == '-')
 279                     adios (NULL, "missing argument to %s", argp[-2]);
 280                 mh_xfree(formsw);
 281                 formsw = getcpy (etcpath (cp));
 282                 continue;
 283
 284             /*
 285              * Switches for moreproc/mhlproc
 286              */
 287             case PROGSW:
 288                 if (!(progsw = *argp++) || *progsw == '-')
 289                     adios (NULL, "missing argument to %s", argp[-2]);
 290                 continue;
 291             case NPROGSW:
 292                 nomore++;
 293                 continue;
 294
 295             case LENSW:
 296             case WIDTHSW:
 297                 if (!(cp = *argp++) || *cp == '-')
 298                     adios (NULL, "missing argument to %s", argp[-2]);
 299                 continue;
 300
 301             /*
 302              * Switches for mhbuild
 303              */
 304             case BUILDSW:
 305                 buildsw = 1;
 306                 continue;
 307             case NBUILDSW:
 308                 buildsw = 0;
 309                 continue;
 310             case RFC934SW:
 311                 rfc934sw = 1;
 312                 continue;
 313             case NRFC934SW:
 314                 rfc934sw = -1;
 315                 continue;
 316
 317             case VERBSW:
 318                 verbosw = 1;
 319                 continue;
 320             case NVERBSW:
 321                 verbosw = 0;
 322                 continue;
 323             case DEBUGSW:
 324                 debugsw = 1;
 325                 continue;
 326             }
 327         }
 328         if (*cp == '+' || *cp == '@') {
 329             if (folder)
 330                 adios (NULL, "only one folder at a time!");
 331             else
 332                 folder = pluspath (cp);
 333         } else
 334                 app_msgarg(&msgs, cp);
 335     }
 336
 337     /* null terminate the list of acceptable parts/types */
 338     parts[npart] = NULL;
 339     types[ntype] = NULL;
 340
 341     /*
 342      * Check if we've specified an additional profile
 343      */
 344     if ((cp = getenv ("MHN"))) {
 345         if ((fp = fopen (cp, "r"))) {
 346             readconfig ((struct node **) 0, fp, cp, 0);
 347             fclose (fp);
 348         } else {
 349             admonish ("", "unable to read $MHN profile (%s)", cp);
 350         }
 351     }
 352
 353     /*
 354      * Read the standard profile setup
 355      */
 356     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 357         readconfig ((struct node **) 0, fp, cp, 0);
 358         fclose (fp);
 359     }
 360
 361     /* Check for public cache location */
 362     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 363         cache_public = NULL;
 364
 365     /* Check for private cache location */
 366     if (!(cache_private = context_find (nmhprivcache)))
 367         cache_private = ".cache";
 368     cache_private = getcpy (m_maildir (cache_private));
 369
 370     /*
 371      * Cache the current directory before we do any chdirs()'s.
 372      */
 373     cwd = add(pwd(), NULL);
 374
 375     if (!context_find ("path"))
 376         free (path ("./", TFOLDER));
 377
 378     /*
 379      * Process a mhn composition file (mhn -build)
 380      */
 381     if (buildsw) {
 382         char *vec[MAXARGS];
 383         int vecp;
 384
 385         if (showsw || storesw || cachesw)
 386             adios (NULL, "cannot use -build with -show, -store, -cache");
 387         if (msgs.size < 1)
 388             adios (NULL, "need to specify a %s composition file", invo_name);
 389         if (msgs.size > 1)
 390             adios (NULL, "only one %s composition file at a time", invo_name);
 391
 392         vecp = 0;
 393         vec[vecp++] = "mhbuild";
 394
 395         if (rfc934sw == 1)
 396             vec[vecp++] = "-rfc934mode";
 397         else if (rfc934sw == -1)
 398             vec[vecp++] = "-norfc934mode";
 399
 400         vec[vecp++] = msgs.msgs[0];
 401         vec[vecp] = NULL;
 402
 403         execvp ("mhbuild", vec);
 404         fprintf (stderr, "unable to exec ");
 405         _exit (-1);
 406     }
 407
 408     /*
 409      * Process a mhn composition file (old MH style)
 410      */
 411     if (msgs.size == 1 && !folder && !npart && !cachesw
 412         && !showsw && !storesw && !ntype && !file
 413         && (cp = getenv ("mhdraft"))
 414         && strcmp (cp, msgs.msgs[0]) == 0) {
 415
 416         char *vec[MAXARGS];
 417         int vecp;
 418
 419         vecp = 0;
 420         vec[vecp++] = "mhbuild";
 421
 422         if (rfc934sw == 1)
 423             vec[vecp++] = "-rfc934mode";
 424         else if (rfc934sw == -1)
 425             vec[vecp++] = "-norfc934mode";
 426
 427         vec[vecp++] = cp;
 428         vec[vecp] = NULL;
 429
 430         execvp ("mhbuild", vec);
 431         fprintf (stderr, "unable to exec ");
 432         _exit (-1);
 433     }
 434
 435     if (file && msgs.size)
 436         adios (NULL, "cannot specify msg and file at same time!");
 437
 438     /*
 439      * check if message is coming from file
 440      */
 441     if (file) {
 442         cts = mh_xcalloc(2, sizeof *cts);
 443         ctp = cts;
 444
 445         if ((ct = parse_mime (file)))
 446             *ctp++ = ct;
 447     } else {
 448         /*
 449          * message(s) are coming from a folder
 450          */
 451         if (!msgs.size)
 452             app_msgarg(&msgs, "cur");
 453         if (!folder)
 454             folder = getfolder (1);
 455         maildir = m_maildir (folder);
 456
 457         if (chdir (maildir) == NOTOK)
 458             adios (maildir, "unable to change directory to");
 459
 460         /* read folder and create message structure */
 461         if (!(mp = folder_read (folder, 1)))
 462             adios (NULL, "unable to read folder %s", folder);
 463
 464         /* check for empty folder */
 465         if (mp->nummsg == 0)
 466             adios (NULL, "no messages in %s", folder);
 467
 468         /* parse all the message ranges/sequences and set SELECTED */
 469         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 470             if (!m_convert (mp, msgs.msgs[msgnum]))
 471                 done (1);
 472         seq_setprev (mp);       /* set the previous-sequence */
 473
 474         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 475         ctp = cts;
 476
 477         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 478             if (is_selected(mp, msgnum)) {
 479                 char *msgnam;
 480
 481                 msgnam = m_name (msgnum);
 482                 if ((ct = parse_mime (msgnam)))
 483                     *ctp++ = ct;
 484             }
 485         }
 486     }
 487
 488     if (!*cts)
 489         done (1);
 490
 491     /*
 492      * You can't give more than one of these flags
 493      * at a time.
 494      */
 495     if (showsw + listsw + storesw + cachesw > 1)
 496         adios (NULL, "can only use one of -show, -list, -store, -cache at same time");
 497
 498     /* If no action is specified, assume -show */
 499     if (!listsw && !showsw && !storesw && !cachesw)
 500         showsw = 1;
 501
 502     userrs = 1;
 503     SIGNAL (SIGQUIT, quitser);
 504     SIGNAL (SIGPIPE, pipeser);
 505
 506     /*
 507      * Get the associated umask for the relevant contents.
 508      */
 509     for (ctp = cts; *ctp; ctp++) {
 510         struct stat st;
 511
 512         ct = *ctp;
 513         if (type_ok (ct, 1) && !ct->c_umask) {
 514             if (stat (ct->c_file, &st) != NOTOK)
 515                 ct->c_umask = ~(st.st_mode & 0777);
 516             else
 517                 ct->c_umask = ~m_gmprot();
 518         }
 519     }
 520
 521     /*
 522      * List the message content
 523      */
 524     if (listsw)
 525         list_all_messages (cts, headsw, sizesw, verbosw, debugsw, 0);
 526
 527     /*
 528      * Store the message content
 529      */
 530     if (storesw) {
 531         info = mhstoreinfo_create (cts, cwd, "always", autosw, verbosw);;
 532         store_all_messages (info);
 533         mhstoreinfo_free (info);
 534     }
 535
 536     /* If reading from a folder, do some updating */
 537     if (mp) {
 538         context_replace (pfolder, folder);/* update current folder  */
 539         seq_setcur (mp, mp->hghsel);      /* update current message */
 540         seq_save (mp);                    /* synchronize sequences  */
 541         context_save ();                  /* save the context file  */
 542     }
 543
 544     /*
 545      * Cache the message content
 546      */
 547     if (cachesw)
 548         cache_all_messages (cts);
 549
 550     /*
 551      * Show the message content
 552      */
 553     if (showsw)
 554         show_all_messages (cts, 0, 0, 0);
 555
 556     /* Now free all the structures for the content */
 557     for (ctp = cts; *ctp; ctp++)
 558         free_content (*ctp);
 559
 560     free (cts);
 561     cts = NULL;
 562
 563     done (0);
 564     return 1;
 565 }
 566
 567
 568 static void
 569 pipeser (int i)
 570 {
 571     if (i == SIGQUIT) {
 572         fflush (stdout);
 573         fprintf (stderr, "\n");
 574         fflush (stderr);
 575     }
 576
 577     done (1);
 578     /* NOTREACHED */
 579 }