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