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