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