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