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 /* mhparse.c */
  81 extern char *tmp;       /* directory to place temp files */
  82
  83 /* mhcachesbr.c */
  84 extern int rcachesw;
  85 extern int wcachesw;
  86 extern char *cache_public;
  87 extern char *cache_private;
  88
  89 /* mhshowsbr.c */
  90 extern int pausesw;
  91 extern int serialsw;
  92 extern char *progsw;
  93 extern int nolist;
  94 extern int nomore;      /* flags for moreproc/header display */
  95 extern char *formsw;
  96
  97 /* mhstoresbr.c */
  98 extern int autosw;
  99 extern char *cwd;       /* cache current working directory */
 100
 101 /* mhmisc.c */
 102 extern int npart;
 103 extern int ntype;
 104 extern char *parts[NPARTS + 1];
 105 extern char *types[NTYPES + 1];
 106 extern int userrs;
 107
 108 int debugsw = 0;
 109 int verbosw = 0;
 110
 111 /*
 112  * variables for mhbuild (mhn -build)
 113  */
 114 static int buildsw  = 0;
 115 static int rfc934sw = 0;
 116
 117 /*
 118  * what action to take?
 119  */
 120 static int cachesw = 0;
 121 static int listsw  = 0;
 122 static int showsw  = 0;
 123 static int storesw = 0;
 124
 125 #define quitser pipeser
 126
 127 /* mhparse.c */
 128 CT parse_mime (char *);
 129
 130 /* mhmisc.c */
 131 int part_ok (CT, int);
 132 int type_ok (CT, int);
 133 void flush_errors (void);
 134
 135 /* mhshowsbr.c */
 136 void show_all_messages (CT *);
 137
 138 /* mhlistsbr.c */
 139 void list_all_messages (CT *, int, int, int, int);
 140
 141 /* mhstoresbr.c */
 142 void store_all_messages (CT *);
 143
 144 /* mhcachesbr.c */
 145 void cache_all_messages (CT *);
 146
 147 /* mhfree.c */
 148 extern CT *cts;
 149 void freects_done (int) NORETURN;
 150
 151 /*
 152  * static prototypes
 153  */
 154 static void pipeser (int);
 155
 156
 157 int
 158 main (int argc, char **argv)
 159 {
 160     int sizesw = 1, headsw = 1;
 161     int msgnum, *icachesw;
 162     char *cp, *file = NULL, *folder = NULL;
 163     char *maildir, buf[100], **argp;
 164     char **arguments;
 165     struct msgs_array msgs = { 0, 0, NULL };
 166     struct msgs *mp = NULL;
 167     CT ct, *ctp;
 168     FILE *fp;
 169
 170     done=freects_done;
 171
 172 #ifdef LOCALE
 173     setlocale(LC_ALL, "");
 174 #endif
 175     invo_name = r1bindex (argv[0], '/');
 176
 177     /* read user profile/context */
 178     context_read();
 179
 180     arguments = getarguments (invo_name, argc, argv, 1);
 181     argp = arguments;
 182
 183     /*
 184      * Parse arguments
 185      */
 186     while ((cp = *argp++)) {
 187         if (*cp == '-') {
 188             switch (smatch (++cp, switches)) {
 189             case AMBIGSW:
 190                 ambigsw (cp, switches);
 191                 done (1);
 192             case UNKWNSW:
 193                 adios (NULL, "-%s unknown", cp);
 194
 195             case HELPSW:
 196                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 197                         invo_name);
 198                 print_help (buf, switches, 1);
 199                 done (0);
 200             case VERSIONSW:
 201                 print_version(invo_name);
 202                 done (0);
 203
 204             case AUTOSW:
 205                 autosw++;
 206                 continue;
 207             case NAUTOSW:
 208                 autosw = 0;
 209                 continue;
 210
 211             case CACHESW:
 212                 cachesw++;
 213                 continue;
 214             case NCACHESW:
 215                 cachesw = 0;
 216                 continue;
 217
 218             case RCACHESW:
 219                 icachesw = &rcachesw;
 220                 goto do_cache;
 221             case WCACHESW:
 222                 icachesw = &wcachesw;
 223 do_cache:
 224                 if (!(cp = *argp++) || *cp == '-')
 225                     adios (NULL, "missing argument to %s", argp[-2]);
 226                 switch (*icachesw = smatch (cp, caches)) {
 227                 case AMBIGSW:
 228                     ambigsw (cp, caches);
 229                     done (1);
 230                 case UNKWNSW:
 231                     adios (NULL, "%s unknown", cp);
 232                 default:
 233                     break;
 234                 }
 235                 continue;
 236
 237             case CHECKSW:
 238                 checksw++;
 239                 continue;
 240             case NCHECKSW:
 241                 checksw = 0;
 242                 continue;
 243
 244             case HEADSW:
 245                 headsw = 1;
 246                 continue;
 247             case NHEADSW:
 248                 headsw = 0;
 249                 continue;
 250
 251             case LISTSW:
 252                 listsw = 1;
 253                 continue;
 254             case NLISTSW:
 255                 listsw = 0;
 256                 continue;
 257
 258             case PAUSESW:
 259                 pausesw = 1;
 260                 continue;
 261             case NPAUSESW:
 262                 pausesw = 0;
 263                 continue;
 264
 265             case SERIALSW:
 266                 serialsw = 1;
 267                 continue;
 268             case NSERIALSW:
 269                 serialsw = 0;
 270                 continue;
 271
 272             case SHOWSW:
 273                 showsw = 1;
 274                 continue;
 275             case NSHOWSW:
 276                 showsw = 0;
 277                 continue;
 278
 279             case SIZESW:
 280                 sizesw = 1;
 281                 continue;
 282             case NSIZESW:
 283                 sizesw = 0;
 284                 continue;
 285
 286             case STORESW:
 287                 storesw = 1;
 288                 continue;
 289             case NSTORESW:
 290                 storesw = 0;
 291                 continue;
 292
 293             case PARTSW:
 294                 if (!(cp = *argp++) || *cp == '-')
 295                     adios (NULL, "missing argument to %s", argp[-2]);
 296                 if (npart >= NPARTS)
 297                     adios (NULL, "too many parts (starting with %s), %d max",
 298                            cp, NPARTS);
 299                 parts[npart++] = cp;
 300                 continue;
 301
 302             case TYPESW:
 303                 if (!(cp = *argp++) || *cp == '-')
 304                     adios (NULL, "missing argument to %s", argp[-2]);
 305                 if (ntype >= NTYPES)
 306                     adios (NULL, "too many types (starting with %s), %d max",
 307                            cp, NTYPES);
 308                 types[ntype++] = cp;
 309                 continue;
 310
 311             case FILESW:
 312                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 313                     adios (NULL, "missing argument to %s", argp[-2]);
 314                 file = *cp == '-' ? cp : path (cp, TFILE);
 315                 continue;
 316
 317             case FORMSW:
 318                 if (!(cp = *argp++) || *cp == '-')
 319                     adios (NULL, "missing argument to %s", argp[-2]);
 320                 if (formsw)
 321                     free (formsw);
 322                 formsw = getcpy (etcpath (cp));
 323                 continue;
 324
 325             /*
 326              * Switches for moreproc/mhlproc
 327              */
 328             case PROGSW:
 329                 if (!(progsw = *argp++) || *progsw == '-')
 330                     adios (NULL, "missing argument to %s", argp[-2]);
 331                 continue;
 332             case NPROGSW:
 333                 nomore++;
 334                 continue;
 335
 336             case LENSW:
 337             case WIDTHSW:
 338                 if (!(cp = *argp++) || *cp == '-')
 339                     adios (NULL, "missing argument to %s", argp[-2]);
 340                 continue;
 341
 342             /*
 343              * Switches for mhbuild
 344              */
 345             case BUILDSW:
 346                 buildsw = 1;
 347                 continue;
 348             case NBUILDSW:
 349                 buildsw = 0;
 350                 continue;
 351             case RFC934SW:
 352                 rfc934sw = 1;
 353                 continue;
 354             case NRFC934SW:
 355                 rfc934sw = -1;
 356                 continue;
 357
 358             case VERBSW:
 359                 verbosw = 1;
 360                 continue;
 361             case NVERBSW:
 362                 verbosw = 0;
 363                 continue;
 364             case DEBUGSW:
 365                 debugsw = 1;
 366                 continue;
 367             }
 368         }
 369         if (*cp == '+' || *cp == '@') {
 370             if (folder)
 371                 adios (NULL, "only one folder at a time!");
 372             else
 373                 folder = pluspath (cp);
 374         } else
 375                 app_msgarg(&msgs, cp);
 376     }
 377
 378     /* null terminate the list of acceptable parts/types */
 379     parts[npart] = NULL;
 380     types[ntype] = NULL;
 381
 382     /*
 383      * Check if we've specified an additional profile
 384      */
 385     if ((cp = getenv ("MHN"))) {
 386         if ((fp = fopen (cp, "r"))) {
 387             readconfig ((struct node **) 0, fp, cp, 0);
 388             fclose (fp);
 389         } else {
 390             admonish ("", "unable to read $MHN profile (%s)", cp);
 391         }
 392     }
 393
 394     /*
 395      * Read the standard profile setup
 396      */
 397     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 398         readconfig ((struct node **) 0, fp, cp, 0);
 399         fclose (fp);
 400     }
 401
 402     /* Check for public cache location */
 403     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 404         cache_public = NULL;
 405
 406     /* Check for private cache location */
 407     if (!(cache_private = context_find (nmhprivcache)))
 408         cache_private = ".cache";
 409     cache_private = getcpy (m_maildir (cache_private));
 410
 411     /*
 412      * Cache the current directory before we do any chdirs()'s.
 413      */
 414     cwd = getcpy (pwd());
 415
 416     /*
 417      * Check for storage directory.  If specified,
 418      * then store temporary files there.  Else we
 419      * store them in standard nmh directory.
 420      */
 421     if ((cp = context_find (nmhstorage)) && *cp)
 422         tmp = concat (cp, "/", invo_name, NULL);
 423     else
 424         tmp = add (m_maildir (invo_name), NULL);
 425
 426     if (!context_find ("path"))
 427         free (path ("./", TFOLDER));
 428
 429     /*
 430      * Process a mhn composition file (mhn -build)
 431      */
 432     if (buildsw) {
 433         char *vec[MAXARGS];
 434         int vecp;
 435
 436         if (showsw || storesw || cachesw)
 437             adios (NULL, "cannot use -build with -show, -store, -cache");
 438         if (msgs.size < 1)
 439             adios (NULL, "need to specify a %s composition file", invo_name);
 440         if (msgs.size > 1)
 441             adios (NULL, "only one %s composition file at a time", invo_name);
 442
 443         vecp = 0;
 444         vec[vecp++] = "mhbuild";
 445
 446         if (rfc934sw == 1)
 447             vec[vecp++] = "-rfc934mode";
 448         else if (rfc934sw == -1)
 449             vec[vecp++] = "-norfc934mode";
 450
 451         vec[vecp++] = msgs.msgs[0];
 452         vec[vecp] = NULL;
 453
 454         execvp ("mhbuild", vec);
 455         fprintf (stderr, "unable to exec ");
 456         _exit (-1);
 457     }
 458
 459     /*
 460      * Process a mhn composition file (old MH style)
 461      */
 462     if (msgs.size == 1 && !folder && !npart && !cachesw
 463         && !showsw && !storesw && !ntype && !file
 464         && (cp = getenv ("mhdraft"))
 465         && strcmp (cp, msgs.msgs[0]) == 0) {
 466
 467         char *vec[MAXARGS];
 468         int vecp;
 469
 470         vecp = 0;
 471         vec[vecp++] = "mhbuild";
 472
 473         if (rfc934sw == 1)
 474             vec[vecp++] = "-rfc934mode";
 475         else if (rfc934sw == -1)
 476             vec[vecp++] = "-norfc934mode";
 477
 478         vec[vecp++] = cp;
 479         vec[vecp] = NULL;
 480
 481         execvp ("mhbuild", vec);
 482         fprintf (stderr, "unable to exec ");
 483         _exit (-1);
 484     }
 485
 486     if (file && msgs.size)
 487         adios (NULL, "cannot specify msg and file at same time!");
 488
 489     /*
 490      * check if message is coming from file
 491      */
 492     if (file) {
 493         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 494             adios (NULL, "out of memory");
 495         ctp = cts;
 496
 497         if ((ct = parse_mime (file)))
 498             *ctp++ = ct;
 499     } else {
 500         /*
 501          * message(s) are coming from a folder
 502          */
 503         if (!msgs.size)
 504             app_msgarg(&msgs, "cur");
 505         if (!folder)
 506             folder = getfolder (1);
 507         maildir = m_maildir (folder);
 508
 509         if (chdir (maildir) == NOTOK)
 510             adios (maildir, "unable to change directory to");
 511
 512         /* read folder and create message structure */
 513         if (!(mp = folder_read (folder, 1)))
 514             adios (NULL, "unable to read folder %s", folder);
 515
 516         /* check for empty folder */
 517         if (mp->nummsg == 0)
 518             adios (NULL, "no messages in %s", folder);
 519
 520         /* parse all the message ranges/sequences and set SELECTED */
 521         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 522             if (!m_convert (mp, msgs.msgs[msgnum]))
 523                 done (1);
 524         seq_setprev (mp);       /* set the previous-sequence */
 525
 526         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 527             adios (NULL, "out of memory");
 528         ctp = cts;
 529
 530         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 531             if (is_selected(mp, msgnum)) {
 532                 char *msgnam;
 533
 534                 msgnam = m_name (msgnum);
 535                 if ((ct = parse_mime (msgnam)))
 536                     *ctp++ = ct;
 537             }
 538         }
 539     }
 540
 541     if (!*cts)
 542         done (1);
 543
 544     /*
 545      * You can't give more than one of these flags
 546      * at a time.
 547      */
 548     if (showsw + listsw + storesw + cachesw > 1)
 549         adios (NULL, "can only use one of -show, -list, -store, -cache at same time");
 550
 551     /* If no action is specified, assume -show */
 552     if (!listsw && !showsw && !storesw && !cachesw)
 553         showsw = 1;
 554
 555     userrs = 1;
 556     SIGNAL (SIGQUIT, quitser);
 557     SIGNAL (SIGPIPE, pipeser);
 558
 559     /*
 560      * Get the associated umask for the relevant contents.
 561      */
 562     for (ctp = cts; *ctp; ctp++) {
 563         struct stat st;
 564
 565         ct = *ctp;
 566         if (type_ok (ct, 1) && !ct->c_umask) {
 567             if (stat (ct->c_file, &st) != NOTOK)
 568                 ct->c_umask = ~(st.st_mode & 0777);
 569             else
 570                 ct->c_umask = ~m_gmprot();
 571         }
 572     }
 573
 574     /*
 575      * List the message content
 576      */
 577     if (listsw)
 578         list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 579
 580     /*
 581      * Store the message content
 582      */
 583     if (storesw)
 584         store_all_messages (cts);
 585
 586     /*
 587      * Cache the message content
 588      */
 589     if (cachesw)
 590         cache_all_messages (cts);
 591
 592     /*
 593      * Show the message content
 594      */
 595     if (showsw)
 596         show_all_messages (cts);
 597
 598     /* Now free all the structures for the content */
 599     for (ctp = cts; *ctp; ctp++)
 600         free_content (*ctp);
 601
 602     free ((char *) cts);
 603     cts = NULL;
 604
 605     /* If reading from a folder, do some updating */
 606     if (mp) {
 607         context_replace (pfolder, folder);/* update current folder  */
 608         seq_setcur (mp, mp->hghsel);      /* update current message */
 609         seq_save (mp);                    /* synchronize sequences  */
 610         context_save ();                  /* save the context file  */
 611     }
 612
 613     done (0);
 614     return 1;
 615 }
 616
 617
 618 static void
 619 pipeser (int i)
 620 {
 621     if (i == SIGQUIT) {
 622         fflush (stdout);
 623         fprintf (stderr, "\n");
 624         fflush (stderr);
 625     }
 626
 627     done (1);
 628     /* NOTREACHED */
 629 }