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