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