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

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