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

   1
   2 /*
   3  * mhshow.c -- display the contents of MIME messages
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <fcntl.h>
  14 #include <h/signals.h>
  15 #include <h/md5.h>
  16 #include <errno.h>
  17 #include <signal.h>
  18 #include <h/mts.h>
  19 #include <h/tws.h>
  20 #include <h/mime.h>
  21 #include <h/mhparse.h>
  22 #include <h/mhcachesbr.h>
  23
  24 #ifdef HAVE_SYS_WAIT_H
  25 # include <sys/wait.h>
  26 #endif
  27
  28 /*
  29  * We allocate space for message names (msgs array)
  30  * this number of elements at a time.
  31  */
  32 #define MAXMSGS  256
  33
  34
  35 static struct swit switches[] = {
  36 #define CHECKSW                 0
  37     { "check", 0 },
  38 #define NCHECKSW                1
  39     { "nocheck", 0 },
  40 #define PAUSESW                 2
  41     { "pause", 0 },
  42 #define NPAUSESW                3
  43     { "nopause", 0 },
  44 #define SERIALSW                4
  45     { "serialonly", 0 },
  46 #define NSERIALSW               5
  47     { "noserialonly", 0 },
  48 #define VERBSW                  6
  49     { "verbose", 0 },
  50 #define NVERBSW                 7
  51     { "noverbose", 0 },
  52 #define FILESW                  8       /* interface from show */
  53     { "file file", 0 },
  54 #define FORMSW                  9
  55     { "form formfile", 0 },
  56 #define PARTSW                 10
  57     { "part number", 0 },
  58 #define TYPESW                 11
  59     { "type content", 0 },
  60 #define RCACHESW               12
  61     { "rcache policy", 0 },
  62 #define WCACHESW               13
  63     { "wcache policy", 0 },
  64 #define VERSIONSW              14
  65     { "version", 0 },
  66 #define HELPSW                 15
  67     { "help", 0 },
  68
  69 /*
  70  * switches for moreproc/mhlproc
  71  */
  72 #define PROGSW                 16
  73     { "moreproc program", -4 },
  74 #define NPROGSW                17
  75     { "nomoreproc", -3 },
  76 #define LENSW                  18
  77     { "length lines", -4 },
  78 #define WIDTHSW                19
  79     { "width columns", -4 },
  80
  81 /*
  82  * switches for debugging
  83  */
  84 #define DEBUGSW                20
  85     { "debug", -5 },
  86     { NULL, 0 }
  87 };
  88
  89
  90 /* mhparse.c */
  91 extern int checksw;
  92 extern char *tmp;       /* directory to place temp files */
  93
  94 /* mhcachesbr.c */
  95 extern int rcachesw;
  96 extern int wcachesw;
  97 extern char *cache_public;
  98 extern char *cache_private;
  99
 100 /* mhshowsbr.c */
 101 extern int pausesw;
 102 extern int serialsw;
 103 extern char *progsw;
 104 extern int nolist;
 105 extern int nomore;      /* flags for moreproc/header display */
 106 extern char *formsw;
 107
 108 /* mhmisc.c */
 109 extern int npart;
 110 extern int ntype;
 111 extern char *parts[NPARTS + 1];
 112 extern char *types[NTYPES + 1];
 113 extern int userrs;
 114
 115 int debugsw = 0;
 116 int verbosw = 0;
 117
 118 /* The list of top-level contents to display */
 119 CT *cts = NULL;
 120
 121 #define quitser pipeser
 122
 123 /* mhparse.c */
 124 CT parse_mime (char *);
 125
 126 /* mhmisc.c */
 127 int part_ok (CT, int);
 128 int type_ok (CT, int);
 129 void set_endian (void);
 130 void flush_errors (void);
 131
 132 /* mhshowsbr.c */
 133 void show_all_messages (CT *);
 134
 135 /* mhfree.c */
 136 void free_content (CT);
 137
 138 /*
 139  * static prototypes
 140  */
 141 static RETSIGTYPE pipeser (int);
 142
 143
 144 int
 145 main (int argc, char **argv)
 146 {
 147     int nummsgs, maxmsgs, msgnum, *icachesw;
 148     char *cp, *file = NULL, *folder = NULL;
 149     char *maildir, buf[100], **argp;
 150     char **arguments, **msgs;
 151     struct msgs *mp = NULL;
 152     CT ct, *ctp;
 153     FILE *fp;
 154
 155 #ifdef LOCALE
 156     setlocale(LC_ALL, "");
 157 #endif
 158     invo_name = r1bindex (argv[0], '/');
 159
 160     /* read user profile/context */
 161     context_read();
 162
 163     arguments = getarguments (invo_name, argc, argv, 1);
 164     argp = arguments;
 165
 166     /*
 167      * Allocate the initial space to record message
 168      * names, ranges, and sequences.
 169      */
 170     nummsgs = 0;
 171     maxmsgs = MAXMSGS;
 172     if (!(msgs = (char **) malloc ((size_t) (maxmsgs * sizeof(*msgs)))))
 173         adios (NULL, "unable to allocate storage");
 174
 175     /*
 176      * Parse arguments
 177      */
 178     while ((cp = *argp++)) {
 179         if (*cp == '-') {
 180             switch (smatch (++cp, switches)) {
 181             case AMBIGSW:
 182                 ambigsw (cp, switches);
 183                 done (1);
 184             case UNKWNSW:
 185                 adios (NULL, "-%s unknown", cp);
 186
 187             case HELPSW:
 188                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 189                         invo_name);
 190                 print_help (buf, switches, 1);
 191                 done (1);
 192             case VERSIONSW:
 193                 print_version(invo_name);
 194                 done (1);
 195
 196             case RCACHESW:
 197                 icachesw = &rcachesw;
 198                 goto do_cache;
 199             case WCACHESW:
 200                 icachesw = &wcachesw;
 201 do_cache:
 202                 if (!(cp = *argp++) || *cp == '-')
 203                     adios (NULL, "missing argument to %s", argp[-2]);
 204                 switch (*icachesw = smatch (cp, caches)) {
 205                 case AMBIGSW:
 206                     ambigsw (cp, caches);
 207                     done (1);
 208                 case UNKWNSW:
 209                     adios (NULL, "%s unknown", cp);
 210                 default:
 211                     break;
 212                 }
 213                 continue;
 214
 215             case CHECKSW:
 216                 checksw++;
 217                 continue;
 218             case NCHECKSW:
 219                 checksw = 0;
 220                 continue;
 221
 222             case PAUSESW:
 223                 pausesw = 1;
 224                 continue;
 225             case NPAUSESW:
 226                 pausesw = 0;
 227                 continue;
 228
 229             case SERIALSW:
 230                 serialsw = 1;
 231                 continue;
 232             case NSERIALSW:
 233                 serialsw = 0;
 234                 continue;
 235
 236             case PARTSW:
 237                 if (!(cp = *argp++) || *cp == '-')
 238                     adios (NULL, "missing argument to %s", argp[-2]);
 239                 if (npart >= NPARTS)
 240                     adios (NULL, "too many parts (starting with %s), %d max",
 241                            cp, NPARTS);
 242                 parts[npart++] = cp;
 243                 continue;
 244
 245             case TYPESW:
 246                 if (!(cp = *argp++) || *cp == '-')
 247                     adios (NULL, "missing argument to %s", argp[-2]);
 248                 if (ntype >= NTYPES)
 249                     adios (NULL, "too many types (starting with %s), %d max",
 250                            cp, NTYPES);
 251                 types[ntype++] = cp;
 252                 continue;
 253
 254             case FILESW:
 255                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 256                     adios (NULL, "missing argument to %s", argp[-2]);
 257                 file = *cp == '-' ? cp : path (cp, TFILE);
 258                 continue;
 259
 260             case FORMSW:
 261                 if (!(cp = *argp++) || *cp == '-')
 262                     adios (NULL, "missing argument to %s", argp[-2]);
 263                 if (formsw)
 264                     free (formsw);
 265                 formsw = getcpy (etcpath (cp));
 266                 continue;
 267
 268             /*
 269              * Switches for moreproc/mhlproc
 270              */
 271             case PROGSW:
 272                 if (!(progsw = *argp++) || *progsw == '-')
 273                     adios (NULL, "missing argument to %s", argp[-2]);
 274                 continue;
 275             case NPROGSW:
 276                 nomore++;
 277                 continue;
 278
 279             case LENSW:
 280             case WIDTHSW:
 281                 if (!(cp = *argp++) || *cp == '-')
 282                     adios (NULL, "missing argument to %s", argp[-2]);
 283                 continue;
 284
 285             case VERBSW:
 286                 verbosw = 1;
 287                 continue;
 288             case NVERBSW:
 289                 verbosw = 0;
 290                 continue;
 291             case DEBUGSW:
 292                 debugsw = 1;
 293                 continue;
 294             }
 295         }
 296         if (*cp == '+' || *cp == '@') {
 297             if (folder)
 298                 adios (NULL, "only one folder at a time!");
 299             else
 300                 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 301         } else {
 302             /*
 303              * Check if we need to allocate more space
 304              * for message names/ranges/sequences.
 305              */
 306             if (nummsgs >= maxmsgs) {
 307                 maxmsgs += MAXMSGS;
 308                 if (!(msgs = (char **) realloc (msgs,
 309                         (size_t) (maxmsgs * sizeof(*msgs)))))
 310                     adios (NULL, "unable to reallocate msgs storage");
 311             }
 312             msgs[nummsgs++] = cp;
 313         }
 314     }
 315
 316     /* null terminate the list of acceptable parts/types */
 317     parts[npart] = NULL;
 318     types[ntype] = NULL;
 319
 320     set_endian ();
 321
 322     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 323         nolist  = 1;
 324         pausesw = 0;
 325     }
 326
 327     /*
 328      * Check if we've specified an additional profile
 329      */
 330     if ((cp = getenv ("MHSHOW"))) {
 331         if ((fp = fopen (cp, "r"))) {
 332             readconfig ((struct node **) 0, fp, cp, 0);
 333             fclose (fp);
 334         } else {
 335             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 336         }
 337     }
 338
 339     /*
 340      * Read the standard profile setup
 341      */
 342     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 343         readconfig ((struct node **) 0, fp, cp, 0);
 344         fclose (fp);
 345     }
 346
 347     /* Check for public cache location */
 348     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 349         cache_public = NULL;
 350
 351     /* Check for private cache location */
 352     if (!(cache_private = context_find (nmhprivcache)))
 353         cache_private = ".cache";
 354     cache_private = getcpy (m_maildir (cache_private));
 355
 356     /*
 357      * Check for storage directory.  If specified,
 358      * then store temporary files there.  Else we
 359      * store them in standard nmh directory.
 360      */
 361     if ((cp = context_find (nmhstorage)) && *cp)
 362         tmp = concat (cp, "/", invo_name, NULL);
 363     else
 364         tmp = add (m_maildir (invo_name), NULL);
 365
 366     if (!context_find ("path"))
 367         free (path ("./", TFOLDER));
 368
 369     if (file && nummsgs)
 370         adios (NULL, "cannot specify msg and file at same time!");
 371
 372     /*
 373      * check if message is coming from file
 374      */
 375     if (file) {
 376         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 377             adios (NULL, "out of memory");
 378         ctp = cts;
 379
 380         if ((ct = parse_mime (file)));
 381             *ctp++ = ct;
 382     } else {
 383         /*
 384          * message(s) are coming from a folder
 385          */
 386         if (!nummsgs)
 387             msgs[nummsgs++] = "cur";
 388         if (!folder)
 389             folder = getfolder (1);
 390         maildir = m_maildir (folder);
 391
 392         if (chdir (maildir) == NOTOK)
 393             adios (maildir, "unable to change directory to");
 394
 395         /* read folder and create message structure */
 396         if (!(mp = folder_read (folder)))
 397             adios (NULL, "unable to read folder %s", folder);
 398
 399         /* check for empty folder */
 400         if (mp->nummsg == 0)
 401             adios (NULL, "no messages in %s", folder);
 402
 403         /* parse all the message ranges/sequences and set SELECTED */
 404         for (msgnum = 0; msgnum < nummsgs; msgnum++)
 405             if (!m_convert (mp, msgs[msgnum]))
 406                 done (1);
 407
 408         /*
 409          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 410          * since we will use that as a tag to know which messages
 411          * to remove from the "unseen" sequence.
 412          */
 413         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 414             if (is_selected(mp, msgnum))
 415                 set_unseen (mp, msgnum);
 416
 417         seq_setprev (mp);       /* set the Previous-Sequence */
 418         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 419
 420         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 421             adios (NULL, "out of memory");
 422         ctp = cts;
 423
 424         /*
 425          * Parse all the SELECTED messages.
 426          */
 427         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 428             if (is_selected(mp, msgnum)) {
 429                 char *msgnam;
 430
 431                 msgnam = m_name (msgnum);
 432                 if ((ct = parse_mime (msgnam)))
 433                     *ctp++ = ct;
 434             }
 435         }
 436     }
 437
 438     if (!*cts)
 439         done (1);
 440
 441     userrs = 1;
 442     SIGNAL (SIGQUIT, quitser);
 443     SIGNAL (SIGPIPE, pipeser);
 444
 445     /*
 446      * Get the associated umask for the relevant contents.
 447      */
 448     for (ctp = cts; *ctp; ctp++) {
 449         struct stat st;
 450
 451         ct = *ctp;
 452         if (type_ok (ct, 1) && !ct->c_umask) {
 453             if (stat (ct->c_file, &st) != NOTOK)
 454                 ct->c_umask = ~(st.st_mode & 0777);
 455             else
 456                 ct->c_umask = ~m_gmprot();
 457         }
 458     }
 459
 460     /*
 461      * Show the message content
 462      */
 463     show_all_messages (cts);
 464
 465     /* Now free all the structures for the content */
 466     for (ctp = cts; *ctp; ctp++)
 467         free_content (*ctp);
 468
 469     free ((char *) cts);
 470     cts = NULL;
 471
 472     /* If reading from a folder, do some updating */
 473     if (mp) {
 474         context_replace (pfolder, folder);/* update current folder  */
 475         seq_setcur (mp, mp->hghsel);      /* update current message */
 476         seq_save (mp);                    /* synchronize sequences  */
 477         context_save ();                  /* save the context file  */
 478     }
 479
 480     return done (0);
 481 }
 482
 483
 484 static RETSIGTYPE
 485 pipeser (int i)
 486 {
 487     if (i == SIGQUIT) {
 488         unlink ("core");
 489         fflush (stdout);
 490         fprintf (stderr, "\n");
 491         fflush (stderr);
 492     }
 493
 494     done (1);
 495     /* NOTREACHED */
 496 }
 497
 498
 499 int
 500 done (int status)
 501 {
 502     CT *ctp;
 503
 504     if ((ctp = cts))
 505         for (; *ctp; ctp++)
 506             free_content (*ctp);
 507
 508     exit (status);
 509     return 1;  /* dead code to satisfy the compiler */
 510 }