diplodocus.org Git - nmh/blob - uip/mhn.c

   1
   2 /*
   3  * mhn.c -- display, list, cache, or store the contents of MIME messages
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <fcntl.h>
  12 #include <h/signals.h>
  13 #include <h/md5.h>
  14 #include <h/mts.h>
  15 #include <h/tws.h>
  16 #include <h/mime.h>
  17 #include <h/mhparse.h>
  18 #include <h/mhcachesbr.h>
  19 #include <h/utils.h>
  20
  21 #define MHN_SWITCHES \
  22     X("auto", 0, AUTOSW) \
  23     X("noauto", 0, NAUTOSW) \
  24     X("cache", 0, CACHESW) \
  25     X("nocache", 0, NCACHESW) \
  26     X("check", 0, CHECKSW) \
  27     X("nocheck", 0, NCHECKSW) \
  28     X("headers", 0, HEADSW) \
  29     X("noheaders", 0, NHEADSW) \
  30     X("list", 0, LISTSW) \
  31     X("nolist", 0, NLISTSW) \
  32     X("pause", 0, PAUSESW) \
  33     X("nopause", 0, NPAUSESW) \
  34     X("realsize", 0, SIZESW) \
  35     X("norealsize", 0, NSIZESW) \
  36     X("serialonly", 0, SERIALSW) \
  37     X("noserialonly", 0, NSERIALSW) \
  38     X("show", 0, SHOWSW) \
  39     X("noshow", 0, NSHOWSW) \
  40     X("store", 0, STORESW) \
  41     X("nostore", 0, NSTORESW) \
  42     X("verbose", 0, VERBSW) \
  43     X("noverbose", 0, NVERBSW) \
  44     X("file file", 0, FILESW) \
  45     X("form formfile", 0, FORMSW) \
  46     X("part number", 0, PARTSW) \
  47     X("type content", 0, TYPESW) \
  48     X("rcache policy", 0, RCACHESW) \
  49     X("wcache policy", 0, WCACHESW) \
  50     X("version", 0, VERSIONSW) \
  51     X("help", 0, HELPSW) \
  52     /*                                  \
  53      * for debugging                    \
  54      */                                 \
  55     X("debug", -5, DEBUGSW) \
  56     /*                                  \
  57      * switches for moreproc/mhlproc    \
  58      */                                 \
  59     X("moreproc program", -4, PROGSW) \
  60     X("nomoreproc", -3, NPROGSW) \
  61     X("length lines", -4, LENSW) \
  62     X("width columns", -4, WIDTHSW) \
  63     /*                                  \
  64      * switches for mhbuild             \
  65      */                                 \
  66     X("build", -5, BUILDSW) \
  67     X("nobuild", -7, NBUILDSW) \
  68     X("rfc934mode", -10, RFC934SW) \
  69     X("norfc934mode", -12, NRFC934SW) \
  70
  71 #define X(sw, minchars, id) id,
  72 DEFINE_SWITCH_ENUM(MHN);
  73 #undef X
  74
  75 #define X(sw, minchars, id) { sw, minchars, id },
  76 DEFINE_SWITCH_ARRAY(MHN, switches);
  77 #undef X
  78
  79
  80 /* mhcachesbr.c */
  81 extern int rcachesw;
  82 extern int wcachesw;
  83 extern char *cache_public;
  84 extern char *cache_private;
  85
  86 /* mhshowsbr.c */
  87 extern int pausesw;
  88 extern int serialsw;
  89 extern char *progsw;
  90 extern int nolist;
  91 extern int nomore;      /* flags for moreproc/header display */
  92 extern char *formsw;
  93
  94 /* mhstoresbr.c */
  95 extern int autosw;
  96 extern char *cwd;       /* cache current working directory */
  97
  98 /* mhmisc.c */
  99 extern int npart;
 100 extern int ntype;
 101 extern char *parts[NPARTS + 1];
 102 extern char *types[NTYPES + 1];
 103 extern int userrs;
 104
 105 int debugsw = 0;
 106 int verbosw = 0;
 107
 108 /*
 109  * variables for mhbuild (mhn -build)
 110  */
 111 static int buildsw  = 0;
 112 static int rfc934sw = 0;
 113
 114 /*
 115  * what action to take?
 116  */
 117 static int cachesw = 0;
 118 static int listsw  = 0;
 119 static int showsw  = 0;
 120 static int storesw = 0;
 121
 122 #define quitser pipeser
 123
 124 /* mhparse.c */
 125 CT parse_mime (char *);
 126
 127 /* mhmisc.c */
 128 int part_ok (CT, int);
 129 int type_ok (CT, int);
 130 void flush_errors (void);
 131
 132 /* mhshowsbr.c */
 133 void show_all_messages (CT *);
 134
 135 /* mhlistsbr.c */
 136 void list_all_messages (CT *, int, int, int, int);
 137
 138 /* mhstoresbr.c */
 139 void store_all_messages (CT *);
 140
 141 /* mhcachesbr.c */
 142 void cache_all_messages (CT *);
 143
 144 /* mhfree.c */
 145 extern CT *cts;
 146 void freects_done (int) NORETURN;
 147
 148 /*
 149  * static prototypes
 150  */
 151 static void pipeser (int);
 152
 153
 154 int
 155 main (int argc, char **argv)
 156 {
 157     int sizesw = 1, headsw = 1;
 158     int msgnum, *icachesw;
 159     char *cp, *file = NULL, *folder = NULL;
 160     char *maildir, buf[100], **argp;
 161     char **arguments;
 162     struct msgs_array msgs = { 0, 0, NULL };
 163     struct msgs *mp = NULL;
 164     CT ct, *ctp;
 165     FILE *fp;
 166
 167     done=freects_done;
 168
 169 #ifdef LOCALE
 170     setlocale(LC_ALL, "");
 171 #endif
 172     invo_name = r1bindex (argv[0], '/');
 173
 174     /* read user profile/context */
 175     context_read();
 176
 177     arguments = getarguments (invo_name, argc, argv, 1);
 178     argp = arguments;
 179
 180     /*
 181      * Parse arguments
 182      */
 183     while ((cp = *argp++)) {
 184         if (*cp == '-') {
 185             switch (smatch (++cp, switches)) {
 186             case AMBIGSW:
 187                 ambigsw (cp, switches);
 188                 done (1);
 189             case UNKWNSW:
 190                 adios (NULL, "-%s unknown", cp);
 191
 192             case HELPSW:
 193                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 194                         invo_name);
 195                 print_help (buf, switches, 1);
 196                 done (0);
 197             case VERSIONSW:
 198                 print_version(invo_name);
 199                 done (0);
 200
 201             case AUTOSW:
 202                 autosw++;
 203                 continue;
 204             case NAUTOSW:
 205                 autosw = 0;
 206                 continue;
 207
 208             case CACHESW:
 209                 cachesw++;
 210                 continue;
 211             case NCACHESW:
 212                 cachesw = 0;
 213                 continue;
 214
 215             case RCACHESW:
 216                 icachesw = &rcachesw;
 217                 goto do_cache;
 218             case WCACHESW:
 219                 icachesw = &wcachesw;
 220 do_cache:
 221                 if (!(cp = *argp++) || *cp == '-')
 222                     adios (NULL, "missing argument to %s", argp[-2]);
 223                 switch (*icachesw = smatch (cp, caches)) {
 224                 case AMBIGSW:
 225                     ambigsw (cp, caches);
 226                     done (1);
 227                 case UNKWNSW:
 228                     adios (NULL, "%s unknown", cp);
 229                 default:
 230                     break;
 231                 }
 232                 continue;
 233
 234             case CHECKSW:
 235                 checksw++;
 236                 continue;
 237             case NCHECKSW:
 238                 checksw = 0;
 239                 continue;
 240
 241             case HEADSW:
 242                 headsw = 1;
 243                 continue;
 244             case NHEADSW:
 245                 headsw = 0;
 246                 continue;
 247
 248             case LISTSW:
 249                 listsw = 1;
 250                 continue;
 251             case NLISTSW:
 252                 listsw = 0;
 253                 continue;
 254
 255             case PAUSESW:
 256                 pausesw = 1;
 257                 continue;
 258             case NPAUSESW:
 259                 pausesw = 0;
 260                 continue;
 261
 262             case SERIALSW:
 263                 serialsw = 1;
 264                 continue;
 265             case NSERIALSW:
 266                 serialsw = 0;
 267                 continue;
 268
 269             case SHOWSW:
 270                 showsw = 1;
 271                 continue;
 272             case NSHOWSW:
 273                 showsw = 0;
 274                 continue;
 275
 276             case SIZESW:
 277                 sizesw = 1;
 278                 continue;
 279             case NSIZESW:
 280                 sizesw = 0;
 281                 continue;
 282
 283             case STORESW:
 284                 storesw = 1;
 285                 continue;
 286             case NSTORESW:
 287                 storesw = 0;
 288                 continue;
 289
 290             case PARTSW:
 291                 if (!(cp = *argp++) || *cp == '-')
 292                     adios (NULL, "missing argument to %s", argp[-2]);
 293                 if (npart >= NPARTS)
 294                     adios (NULL, "too many parts (starting with %s), %d max",
 295                            cp, NPARTS);
 296                 parts[npart++] = cp;
 297                 continue;
 298
 299             case TYPESW:
 300                 if (!(cp = *argp++) || *cp == '-')
 301                     adios (NULL, "missing argument to %s", argp[-2]);
 302                 if (ntype >= NTYPES)
 303                     adios (NULL, "too many types (starting with %s), %d max",
 304                            cp, NTYPES);
 305                 types[ntype++] = cp;
 306                 continue;
 307
 308             case FILESW:
 309                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 310                     adios (NULL, "missing argument to %s", argp[-2]);
 311                 file = *cp == '-' ? cp : path (cp, TFILE);
 312                 continue;
 313
 314             case FORMSW:
 315                 if (!(cp = *argp++) || *cp == '-')
 316                     adios (NULL, "missing argument to %s", argp[-2]);
 317                 if (formsw)
 318                     free (formsw);
 319                 formsw = getcpy (etcpath (cp));
 320                 continue;
 321
 322             /*
 323              * Switches for moreproc/mhlproc
 324              */
 325             case PROGSW:
 326                 if (!(progsw = *argp++) || *progsw == '-')
 327                     adios (NULL, "missing argument to %s", argp[-2]);
 328                 continue;
 329             case NPROGSW:
 330                 nomore++;
 331                 continue;
 332
 333             case LENSW:
 334             case WIDTHSW:
 335                 if (!(cp = *argp++) || *cp == '-')
 336                     adios (NULL, "missing argument to %s", argp[-2]);
 337                 continue;
 338
 339             /*
 340              * Switches for mhbuild
 341              */
 342             case BUILDSW:
 343                 buildsw = 1;
 344                 continue;
 345             case NBUILDSW:
 346                 buildsw = 0;
 347                 continue;
 348             case RFC934SW:
 349                 rfc934sw = 1;
 350                 continue;
 351             case NRFC934SW:
 352                 rfc934sw = -1;
 353                 continue;
 354
 355             case VERBSW:
 356                 verbosw = 1;
 357                 continue;
 358             case NVERBSW:
 359                 verbosw = 0;
 360                 continue;
 361             case DEBUGSW:
 362                 debugsw = 1;
 363                 continue;
 364             }
 365         }
 366         if (*cp == '+' || *cp == '@') {
 367             if (folder)
 368                 adios (NULL, "only one folder at a time!");
 369             else
 370                 folder = pluspath (cp);
 371         } else
 372                 app_msgarg(&msgs, cp);
 373     }
 374
 375     /* null terminate the list of acceptable parts/types */
 376     parts[npart] = NULL;
 377     types[ntype] = NULL;
 378
 379     /*
 380      * Check if we've specified an additional profile
 381      */
 382     if ((cp = getenv ("MHN"))) {
 383         if ((fp = fopen (cp, "r"))) {
 384             readconfig ((struct node **) 0, fp, cp, 0);
 385             fclose (fp);
 386         } else {
 387             admonish ("", "unable to read $MHN profile (%s)", cp);
 388         }
 389     }
 390
 391     /*
 392      * Read the standard profile setup
 393      */
 394     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 395         readconfig ((struct node **) 0, fp, cp, 0);
 396         fclose (fp);
 397     }
 398
 399     /* Check for public cache location */
 400     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 401         cache_public = NULL;
 402
 403     /* Check for private cache location */
 404     if (!(cache_private = context_find (nmhprivcache)))
 405         cache_private = ".cache";
 406     cache_private = getcpy (m_maildir (cache_private));
 407
 408     /*
 409      * Cache the current directory before we do any chdirs()'s.
 410      */
 411     cwd = getcpy (pwd());
 412
 413     if (!context_find ("path"))
 414         free (path ("./", TFOLDER));
 415
 416     /*
 417      * Process a mhn composition file (mhn -build)
 418      */
 419     if (buildsw) {
 420         char *vec[MAXARGS];
 421         int vecp;
 422
 423         if (showsw || storesw || cachesw)
 424             adios (NULL, "cannot use -build with -show, -store, -cache");
 425         if (msgs.size < 1)
 426             adios (NULL, "need to specify a %s composition file", invo_name);
 427         if (msgs.size > 1)
 428             adios (NULL, "only one %s composition file at a time", invo_name);
 429
 430         vecp = 0;
 431         vec[vecp++] = "mhbuild";
 432
 433         if (rfc934sw == 1)
 434             vec[vecp++] = "-rfc934mode";
 435         else if (rfc934sw == -1)
 436             vec[vecp++] = "-norfc934mode";
 437
 438         vec[vecp++] = msgs.msgs[0];
 439         vec[vecp] = NULL;
 440
 441         execvp ("mhbuild", vec);
 442         fprintf (stderr, "unable to exec ");
 443         _exit (-1);
 444     }
 445
 446     /*
 447      * Process a mhn composition file (old MH style)
 448      */
 449     if (msgs.size == 1 && !folder && !npart && !cachesw
 450         && !showsw && !storesw && !ntype && !file
 451         && (cp = getenv ("mhdraft"))
 452         && strcmp (cp, msgs.msgs[0]) == 0) {
 453
 454         char *vec[MAXARGS];
 455         int vecp;
 456
 457         vecp = 0;
 458         vec[vecp++] = "mhbuild";
 459
 460         if (rfc934sw == 1)
 461             vec[vecp++] = "-rfc934mode";
 462         else if (rfc934sw == -1)
 463             vec[vecp++] = "-norfc934mode";
 464
 465         vec[vecp++] = cp;
 466         vec[vecp] = NULL;
 467
 468         execvp ("mhbuild", vec);
 469         fprintf (stderr, "unable to exec ");
 470         _exit (-1);
 471     }
 472
 473     if (file && msgs.size)
 474         adios (NULL, "cannot specify msg and file at same time!");
 475
 476     /*
 477      * check if message is coming from file
 478      */
 479     if (file) {
 480         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 481             adios (NULL, "out of memory");
 482         ctp = cts;
 483
 484         if ((ct = parse_mime (file)))
 485             *ctp++ = ct;
 486     } else {
 487         /*
 488          * message(s) are coming from a folder
 489          */
 490         if (!msgs.size)
 491             app_msgarg(&msgs, "cur");
 492         if (!folder)
 493             folder = getfolder (1);
 494         maildir = m_maildir (folder);
 495
 496         if (chdir (maildir) == NOTOK)
 497             adios (maildir, "unable to change directory to");
 498
 499         /* read folder and create message structure */
 500         if (!(mp = folder_read (folder, 1)))
 501             adios (NULL, "unable to read folder %s", folder);
 502
 503         /* check for empty folder */
 504         if (mp->nummsg == 0)
 505             adios (NULL, "no messages in %s", folder);
 506
 507         /* parse all the message ranges/sequences and set SELECTED */
 508         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 509             if (!m_convert (mp, msgs.msgs[msgnum]))
 510                 done (1);
 511         seq_setprev (mp);       /* set the previous-sequence */
 512
 513         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 514             adios (NULL, "out of memory");
 515         ctp = cts;
 516
 517         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 518             if (is_selected(mp, msgnum)) {
 519                 char *msgnam;
 520
 521                 msgnam = m_name (msgnum);
 522                 if ((ct = parse_mime (msgnam)))
 523                     *ctp++ = ct;
 524             }
 525         }
 526     }
 527
 528     if (!*cts)
 529         done (1);
 530
 531     /*
 532      * You can't give more than one of these flags
 533      * at a time.
 534      */
 535     if (showsw + listsw + storesw + cachesw > 1)
 536         adios (NULL, "can only use one of -show, -list, -store, -cache at same time");
 537
 538     /* If no action is specified, assume -show */
 539     if (!listsw && !showsw && !storesw && !cachesw)
 540         showsw = 1;
 541
 542     userrs = 1;
 543     SIGNAL (SIGQUIT, quitser);
 544     SIGNAL (SIGPIPE, pipeser);
 545
 546     /*
 547      * Get the associated umask for the relevant contents.
 548      */
 549     for (ctp = cts; *ctp; ctp++) {
 550         struct stat st;
 551
 552         ct = *ctp;
 553         if (type_ok (ct, 1) && !ct->c_umask) {
 554             if (stat (ct->c_file, &st) != NOTOK)
 555                 ct->c_umask = ~(st.st_mode & 0777);
 556             else
 557                 ct->c_umask = ~m_gmprot();
 558         }
 559     }
 560
 561     /*
 562      * List the message content
 563      */
 564     if (listsw)
 565         list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 566
 567     /*
 568      * Store the message content
 569      */
 570     if (storesw)
 571         store_all_messages (cts);
 572
 573     /*
 574      * Cache the message content
 575      */
 576     if (cachesw)
 577         cache_all_messages (cts);
 578
 579     /*
 580      * Show the message content
 581      */
 582     if (showsw)
 583         show_all_messages (cts);
 584
 585     /* Now free all the structures for the content */
 586     for (ctp = cts; *ctp; ctp++)
 587         free_content (*ctp);
 588
 589     free ((char *) cts);
 590     cts = NULL;
 591
 592     /* If reading from a folder, do some updating */
 593     if (mp) {
 594         context_replace (pfolder, folder);/* update current folder  */
 595         seq_setcur (mp, mp->hghsel);      /* update current message */
 596         seq_save (mp);                    /* synchronize sequences  */
 597         context_save ();                  /* save the context file  */
 598     }
 599
 600     done (0);
 601     return 1;
 602 }
 603
 604
 605 static void
 606 pipeser (int i)
 607 {
 608     if (i == SIGQUIT) {
 609         fflush (stdout);
 610         fprintf (stderr, "\n");
 611         fflush (stderr);
 612     }
 613
 614     done (1);
 615     /* NOTREACHED */
 616 }