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