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

   1
   2 /*
   3  * mhlist.c -- list 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 HEADSW                  2
  41     { "headers", 0 },
  42 #define NHEADSW                 3
  43     { "noheaders", 0 },
  44 #define SIZESW                  4
  45     { "realsize", 0 },
  46 #define NSIZESW                 5
  47     { "norealsize", 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 PARTSW                  9
  55     { "part number", 0 },
  56 #define TYPESW                 10
  57     { "type content", 0 },
  58 #define RCACHESW               11
  59     { "rcache policy", 0 },
  60 #define WCACHESW               12
  61     { "wcache policy", 0 },
  62 #define VERSIONSW              13
  63     { "version", 0 },
  64 #define HELPSW                 14
  65     { "help", 0 },
  66
  67 /*
  68  * switches for debugging
  69  */
  70 #define DEBUGSW                15
  71     { "debug", -5 },
  72     { NULL, 0 }
  73 };
  74
  75
  76 /* mhparse.c */
  77 extern int checksw;
  78 extern char *tmp;       /* directory to place temp files */
  79
  80 /* mhcachesbr.c */
  81 extern int rcachesw;
  82 extern int wcachesw;
  83 extern char *cache_public;
  84 extern char *cache_private;
  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 /*
  94  * This is currently needed to keep mhparse happy.
  95  * This needs to be changed.
  96  */
  97 pid_t xpid  = 0;
  98
  99 int debugsw = 0;
 100 int verbosw = 0;
 101
 102 /* The list of top-level contents to display */
 103 CT *cts = NULL;
 104
 105 #define quitser pipeser
 106
 107 /* mhparse.c */
 108 CT parse_mime (char *);
 109
 110 /* mhmisc.c */
 111 int part_ok (CT, int);
 112 int type_ok (CT, int);
 113 void set_endian (void);
 114 void flush_errors (void);
 115
 116 /* mhlistsbr.c */
 117 void list_all_messages (CT *, int, int, int, int);
 118
 119 /* mhfree.c */
 120 void free_content (CT);
 121
 122 /*
 123  * static prototypes
 124  */
 125 static RETSIGTYPE pipeser (int);
 126
 127
 128 int
 129 main (int argc, char **argv)
 130 {
 131     int sizesw = 1, headsw = 1;
 132     int nummsgs, maxmsgs, msgnum, *icachesw;
 133     char *cp, *file = NULL, *folder = NULL;
 134     char *maildir, buf[100], **argp;
 135     char **arguments, **msgs;
 136     struct msgs *mp = NULL;
 137     CT ct, *ctp;
 138
 139 #ifdef LOCALE
 140     setlocale(LC_ALL, "");
 141 #endif
 142     invo_name = r1bindex (argv[0], '/');
 143
 144     /* read user profile/context */
 145     context_read();
 146
 147     arguments = getarguments (invo_name, argc, argv, 1);
 148     argp = arguments;
 149
 150     /*
 151      * Allocate the initial space to record message
 152      * names, ranges, and sequences.
 153      */
 154     nummsgs = 0;
 155     maxmsgs = MAXMSGS;
 156     if (!(msgs = (char **) malloc ((size_t) (maxmsgs * sizeof(*msgs)))))
 157         adios (NULL, "unable to allocate storage");
 158
 159     /*
 160      * Parse arguments
 161      */
 162     while ((cp = *argp++)) {
 163         if (*cp == '-') {
 164             switch (smatch (++cp, switches)) {
 165             case AMBIGSW:
 166                 ambigsw (cp, switches);
 167                 done (1);
 168             case UNKWNSW:
 169                 adios (NULL, "-%s unknown", cp);
 170
 171             case HELPSW:
 172                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 173                         invo_name);
 174                 print_help (buf, switches, 1);
 175                 done (1);
 176             case VERSIONSW:
 177                 print_version(invo_name);
 178                 done (1);
 179
 180             case RCACHESW:
 181                 icachesw = &rcachesw;
 182                 goto do_cache;
 183             case WCACHESW:
 184                 icachesw = &wcachesw;
 185 do_cache:
 186                 if (!(cp = *argp++) || *cp == '-')
 187                     adios (NULL, "missing argument to %s", argp[-2]);
 188                 switch (*icachesw = smatch (cp, caches)) {
 189                 case AMBIGSW:
 190                     ambigsw (cp, caches);
 191                     done (1);
 192                 case UNKWNSW:
 193                     adios (NULL, "%s unknown", cp);
 194                 default:
 195                     break;
 196                 }
 197                 continue;
 198
 199             case CHECKSW:
 200                 checksw++;
 201                 continue;
 202             case NCHECKSW:
 203                 checksw = 0;
 204                 continue;
 205
 206             case HEADSW:
 207                 headsw = 1;
 208                 continue;
 209             case NHEADSW:
 210                 headsw = 0;
 211                 continue;
 212
 213             case SIZESW:
 214                 sizesw = 1;
 215                 continue;
 216             case NSIZESW:
 217                 sizesw = 0;
 218                 continue;
 219
 220             case PARTSW:
 221                 if (!(cp = *argp++) || *cp == '-')
 222                     adios (NULL, "missing argument to %s", argp[-2]);
 223                 if (npart >= NPARTS)
 224                     adios (NULL, "too many parts (starting with %s), %d max",
 225                            cp, NPARTS);
 226                 parts[npart++] = cp;
 227                 continue;
 228
 229             case TYPESW:
 230                 if (!(cp = *argp++) || *cp == '-')
 231                     adios (NULL, "missing argument to %s", argp[-2]);
 232                 if (ntype >= NTYPES)
 233                     adios (NULL, "too many types (starting with %s), %d max",
 234                            cp, NTYPES);
 235                 types[ntype++] = cp;
 236                 continue;
 237
 238             case FILESW:
 239                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 240                     adios (NULL, "missing argument to %s", argp[-2]);
 241                 file = *cp == '-' ? cp : path (cp, TFILE);
 242                 continue;
 243
 244             case VERBSW:
 245                 verbosw = 1;
 246                 continue;
 247             case NVERBSW:
 248                 verbosw = 0;
 249                 continue;
 250             case DEBUGSW:
 251                 debugsw = 1;
 252                 continue;
 253             }
 254         }
 255         if (*cp == '+' || *cp == '@') {
 256             if (folder)
 257                 adios (NULL, "only one folder at a time!");
 258             else
 259                 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 260         } else {
 261             /*
 262              * Check if we need to allocate more space
 263              * for message names/ranges/sequences.
 264              */
 265             if (nummsgs >= maxmsgs) {
 266                 maxmsgs += MAXMSGS;
 267                 if (!(msgs = (char **) realloc (msgs,
 268                         (size_t) (maxmsgs * sizeof(*msgs)))))
 269                     adios (NULL, "unable to reallocate msgs storage");
 270             }
 271             msgs[nummsgs++] = cp;
 272         }
 273     }
 274
 275     /* null terminate the list of acceptable parts/types */
 276     parts[npart] = NULL;
 277     types[ntype] = NULL;
 278
 279     set_endian ();
 280
 281     /* Check for public cache location */
 282     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 283         cache_public = NULL;
 284
 285     /* Check for private cache location */
 286     if (!(cache_private = context_find (nmhprivcache)))
 287         cache_private = ".cache";
 288     cache_private = getcpy (m_maildir (cache_private));
 289
 290     /*
 291      * Check for storage directory.  If specified,
 292      * then store temporary files there.  Else we
 293      * store them in standard nmh directory.
 294      */
 295     if ((cp = context_find (nmhstorage)) && *cp)
 296         tmp = concat (cp, "/", invo_name, NULL);
 297     else
 298         tmp = add (m_maildir (invo_name), NULL);
 299
 300     if (!context_find ("path"))
 301         free (path ("./", TFOLDER));
 302
 303     if (file && nummsgs)
 304         adios (NULL, "cannot specify msg and file at same time!");
 305
 306     /*
 307      * check if message is coming from file
 308      */
 309     if (file) {
 310         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 311             adios (NULL, "out of memory");
 312         ctp = cts;
 313
 314         if ((ct = parse_mime (file)));
 315             *ctp++ = ct;
 316     } else {
 317         /*
 318          * message(s) are coming from a folder
 319          */
 320         if (!nummsgs)
 321             msgs[nummsgs++] = "cur";
 322         if (!folder)
 323             folder = getfolder (1);
 324         maildir = m_maildir (folder);
 325
 326         if (chdir (maildir) == NOTOK)
 327             adios (maildir, "unable to change directory to");
 328
 329         /* read folder and create message structure */
 330         if (!(mp = folder_read (folder)))
 331             adios (NULL, "unable to read folder %s", folder);
 332
 333         /* check for empty folder */
 334         if (mp->nummsg == 0)
 335             adios (NULL, "no messages in %s", folder);
 336
 337         /* parse all the message ranges/sequences and set SELECTED */
 338         for (msgnum = 0; msgnum < nummsgs; msgnum++)
 339             if (!m_convert (mp, msgs[msgnum]))
 340                 done (1);
 341         seq_setprev (mp);       /* set the previous-sequence */
 342
 343         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 344             adios (NULL, "out of memory");
 345         ctp = cts;
 346
 347         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 348             if (is_selected(mp, msgnum)) {
 349                 char *msgnam;
 350
 351                 msgnam = m_name (msgnum);
 352                 if ((ct = parse_mime (msgnam)))
 353                     *ctp++ = ct;
 354             }
 355         }
 356     }
 357
 358     if (!*cts)
 359         done (1);
 360
 361     userrs = 1;
 362     SIGNAL (SIGQUIT, quitser);
 363     SIGNAL (SIGPIPE, pipeser);
 364
 365     /*
 366      * Get the associated umask for the relevant contents.
 367      */
 368     for (ctp = cts; *ctp; ctp++) {
 369         struct stat st;
 370
 371         ct = *ctp;
 372         if (type_ok (ct, 1) && !ct->c_umask) {
 373             if (stat (ct->c_file, &st) != NOTOK)
 374                 ct->c_umask = ~(st.st_mode & 0777);
 375             else
 376                 ct->c_umask = ~m_gmprot();
 377         }
 378     }
 379
 380     /*
 381      * List the message content
 382      */
 383     list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 384
 385     /* Now free all the structures for the content */
 386     for (ctp = cts; *ctp; ctp++)
 387         free_content (*ctp);
 388
 389     free ((char *) cts);
 390     cts = NULL;
 391
 392     /* If reading from a folder, do some updating */
 393     if (mp) {
 394         context_replace (pfolder, folder);/* update current folder  */
 395         seq_setcur (mp, mp->hghsel);      /* update current message */
 396         seq_save (mp);                    /* synchronize sequences  */
 397         context_save ();                  /* save the context file  */
 398     }
 399
 400     return done (0);
 401 }
 402
 403
 404 static RETSIGTYPE
 405 pipeser (int i)
 406 {
 407     if (i == SIGQUIT) {
 408         unlink ("core");
 409         fflush (stdout);
 410         fprintf (stderr, "\n");
 411         fflush (stderr);
 412     }
 413
 414     done (1);
 415     /* NOTREACHED */
 416 }
 417
 418
 419 int
 420 done (int status)
 421 {
 422     CT *ctp;
 423
 424     if ((ctp = cts))
 425         for (; *ctp; ctp++)
 426             free_content (*ctp);
 427
 428     exit (status);
 429     return 1;  /* dead code to satisfy the compiler */
 430 }