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

   1
   2 /*
   3  * mhlist.c -- list 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 HEADSW                  2
  37     { "headers", 0 },
  38 #define NHEADSW                 3
  39     { "noheaders", 0 },
  40 #define SIZESW                  4
  41     { "realsize", 0 },
  42 #define NSIZESW                 5
  43     { "norealsize", 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 PARTSW                  9
  51     { "part number", 0 },
  52 #define TYPESW                 10
  53     { "type content", 0 },
  54 #define RCACHESW               11
  55     { "rcache policy", 0 },
  56 #define WCACHESW               12
  57     { "wcache policy", 0 },
  58 #define VERSIONSW              13
  59     { "version", 0 },
  60 #define HELPSW                 14
  61     { "help", 0 },
  62
  63 /*
  64  * switches for debugging
  65  */
  66 #define DEBUGSW                15
  67     { "debug", -5 },
  68     { NULL, 0 }
  69 };
  70
  71
  72 extern int errno;
  73
  74 /* mhparse.c */
  75 extern int checksw;
  76 extern char *tmp;       /* directory to place temp files */
  77
  78 /* mhcachesbr.c */
  79 extern int rcachesw;
  80 extern int wcachesw;
  81 extern char *cache_public;
  82 extern char *cache_private;
  83
  84 /* mhmisc.c */
  85 extern int npart;
  86 extern int ntype;
  87 extern char *parts[NPARTS + 1];
  88 extern char *types[NTYPES + 1];
  89 extern int userrs;
  90
  91 /*
  92  * This is currently needed to keep mhparse happy.
  93  * This needs to be changed.
  94  */
  95 pid_t xpid  = 0;
  96
  97 int debugsw = 0;
  98 int verbosw = 0;
  99
 100 /* The list of top-level contents to display */
 101 CT *cts = NULL;
 102
 103 #define quitser pipeser
 104
 105 /* mhparse.c */
 106 CT parse_mime (char *);
 107
 108 /* mhmisc.c */
 109 int part_ok (CT, int);
 110 int type_ok (CT, int);
 111 void set_endian (void);
 112 void flush_errors (void);
 113
 114 /* mhlistsbr.c */
 115 void list_all_messages (CT *, int, int, int, int);
 116
 117 /* mhfree.c */
 118 void free_content (CT);
 119
 120 /*
 121  * static prototypes
 122  */
 123 static RETSIGTYPE pipeser (int);
 124
 125
 126 int
 127 main (int argc, char **argv)
 128 {
 129     int sizesw = 1, headsw = 1;
 130     int nummsgs, maxmsgs, msgnum, *icachesw;
 131     char *cp, *file = NULL, *folder = NULL;
 132     char *maildir, buf[100], **argp;
 133     char **arguments, **msgs;
 134     struct msgs *mp = NULL;
 135     CT ct, *ctp;
 136
 137 #ifdef LOCALE
 138     setlocale(LC_ALL, "");
 139 #endif
 140     invo_name = r1bindex (argv[0], '/');
 141
 142     /* read user profile/context */
 143     context_read();
 144
 145     arguments = getarguments (invo_name, argc, argv, 1);
 146     argp = arguments;
 147
 148     /*
 149      * Allocate the initial space to record message
 150      * names, ranges, and sequences.
 151      */
 152     nummsgs = 0;
 153     maxmsgs = MAXMSGS;
 154     if (!(msgs = (char **) malloc ((size_t) (maxmsgs * sizeof(*msgs)))))
 155         adios (NULL, "unable to allocate storage");
 156
 157     /*
 158      * Parse arguments
 159      */
 160     while ((cp = *argp++)) {
 161         if (*cp == '-') {
 162             switch (smatch (++cp, switches)) {
 163             case AMBIGSW:
 164                 ambigsw (cp, switches);
 165                 done (1);
 166             case UNKWNSW:
 167                 adios (NULL, "-%s unknown", cp);
 168
 169             case HELPSW:
 170                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 171                         invo_name);
 172                 print_help (buf, switches, 1);
 173                 done (1);
 174             case VERSIONSW:
 175                 print_version(invo_name);
 176                 done (1);
 177
 178             case RCACHESW:
 179                 icachesw = &rcachesw;
 180                 goto do_cache;
 181             case WCACHESW:
 182                 icachesw = &wcachesw;
 183 do_cache:
 184                 if (!(cp = *argp++) || *cp == '-')
 185                     adios (NULL, "missing argument to %s", argp[-2]);
 186                 switch (*icachesw = smatch (cp, caches)) {
 187                 case AMBIGSW:
 188                     ambigsw (cp, caches);
 189                     done (1);
 190                 case UNKWNSW:
 191                     adios (NULL, "%s unknown", cp);
 192                 default:
 193                     break;
 194                 }
 195                 continue;
 196
 197             case CHECKSW:
 198                 checksw++;
 199                 continue;
 200             case NCHECKSW:
 201                 checksw = 0;
 202                 continue;
 203
 204             case HEADSW:
 205                 headsw = 1;
 206                 continue;
 207             case NHEADSW:
 208                 headsw = 0;
 209                 continue;
 210
 211             case SIZESW:
 212                 sizesw = 1;
 213                 continue;
 214             case NSIZESW:
 215                 sizesw = 0;
 216                 continue;
 217
 218             case PARTSW:
 219                 if (!(cp = *argp++) || *cp == '-')
 220                     adios (NULL, "missing argument to %s", argp[-2]);
 221                 if (npart >= NPARTS)
 222                     adios (NULL, "too many parts (starting with %s), %d max",
 223                            cp, NPARTS);
 224                 parts[npart++] = cp;
 225                 continue;
 226
 227             case TYPESW:
 228                 if (!(cp = *argp++) || *cp == '-')
 229                     adios (NULL, "missing argument to %s", argp[-2]);
 230                 if (ntype >= NTYPES)
 231                     adios (NULL, "too many types (starting with %s), %d max",
 232                            cp, NTYPES);
 233                 types[ntype++] = cp;
 234                 continue;
 235
 236             case FILESW:
 237                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 238                     adios (NULL, "missing argument to %s", argp[-2]);
 239                 file = *cp == '-' ? cp : path (cp, TFILE);
 240                 continue;
 241
 242             case VERBSW:
 243                 verbosw = 1;
 244                 continue;
 245             case NVERBSW:
 246                 verbosw = 0;
 247                 continue;
 248             case DEBUGSW:
 249                 debugsw = 1;
 250                 continue;
 251             }
 252         }
 253         if (*cp == '+' || *cp == '@') {
 254             if (folder)
 255                 adios (NULL, "only one folder at a time!");
 256             else
 257                 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 258         } else {
 259             /*
 260              * Check if we need to allocate more space
 261              * for message names/ranges/sequences.
 262              */
 263             if (nummsgs >= maxmsgs) {
 264                 maxmsgs += MAXMSGS;
 265                 if (!(msgs = (char **) realloc (msgs,
 266                         (size_t) (maxmsgs * sizeof(*msgs)))))
 267                     adios (NULL, "unable to reallocate msgs storage");
 268             }
 269             msgs[nummsgs++] = cp;
 270         }
 271     }
 272
 273     /* null terminate the list of acceptable parts/types */
 274     parts[npart] = NULL;
 275     types[ntype] = NULL;
 276
 277     set_endian ();
 278
 279     /* Check for public cache location */
 280     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 281         cache_public = NULL;
 282
 283     /* Check for private cache location */
 284     if (!(cache_private = context_find (nmhprivcache)))
 285         cache_private = ".cache";
 286     cache_private = getcpy (m_maildir (cache_private));
 287
 288     /*
 289      * Check for storage directory.  If specified,
 290      * then store temporary files there.  Else we
 291      * store them in standard nmh directory.
 292      */
 293     if ((cp = context_find (nmhstorage)) && *cp)
 294         tmp = concat (cp, "/", invo_name, NULL);
 295     else
 296         tmp = add (m_maildir (invo_name), NULL);
 297
 298     if (!context_find ("path"))
 299         free (path ("./", TFOLDER));
 300
 301     if (file && nummsgs)
 302         adios (NULL, "cannot specify msg and file at same time!");
 303
 304     /*
 305      * check if message is coming from file
 306      */
 307     if (file) {
 308         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 309             adios (NULL, "out of memory");
 310         ctp = cts;
 311
 312         if ((ct = parse_mime (file)));
 313             *ctp++ = ct;
 314     } else {
 315         /*
 316          * message(s) are coming from a folder
 317          */
 318         if (!nummsgs)
 319             msgs[nummsgs++] = "cur";
 320         if (!folder)
 321             folder = getfolder (1);
 322         maildir = m_maildir (folder);
 323
 324         if (chdir (maildir) == NOTOK)
 325             adios (maildir, "unable to change directory to");
 326
 327         /* read folder and create message structure */
 328         if (!(mp = folder_read (folder)))
 329             adios (NULL, "unable to read folder %s", folder);
 330
 331         /* check for empty folder */
 332         if (mp->nummsg == 0)
 333             adios (NULL, "no messages in %s", folder);
 334
 335         /* parse all the message ranges/sequences and set SELECTED */
 336         for (msgnum = 0; msgnum < nummsgs; msgnum++)
 337             if (!m_convert (mp, msgs[msgnum]))
 338                 done (1);
 339         seq_setprev (mp);       /* set the previous-sequence */
 340
 341         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 342             adios (NULL, "out of memory");
 343         ctp = cts;
 344
 345         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 346             if (is_selected(mp, msgnum)) {
 347                 char *msgnam;
 348
 349                 msgnam = m_name (msgnum);
 350                 if ((ct = parse_mime (msgnam)))
 351                     *ctp++ = ct;
 352             }
 353         }
 354     }
 355
 356     if (!*cts)
 357         done (1);
 358
 359     userrs = 1;
 360     SIGNAL (SIGQUIT, quitser);
 361     SIGNAL (SIGPIPE, pipeser);
 362
 363     /*
 364      * Get the associated umask for the relevant contents.
 365      */
 366     for (ctp = cts; *ctp; ctp++) {
 367         struct stat st;
 368
 369         ct = *ctp;
 370         if (type_ok (ct, 1) && !ct->c_umask) {
 371             if (stat (ct->c_file, &st) != NOTOK)
 372                 ct->c_umask = ~(st.st_mode & 0777);
 373             else
 374                 ct->c_umask = ~m_gmprot();
 375         }
 376     }
 377
 378     /*
 379      * List the message content
 380      */
 381     list_all_messages (cts, headsw, sizesw, verbosw, debugsw);
 382
 383     /* Now free all the structures for the content */
 384     for (ctp = cts; *ctp; ctp++)
 385         free_content (*ctp);
 386
 387     free ((char *) cts);
 388     cts = NULL;
 389
 390     /* If reading from a folder, do some updating */
 391     if (mp) {
 392         context_replace (pfolder, folder);/* update current folder  */
 393         seq_setcur (mp, mp->hghsel);      /* update current message */
 394         seq_save (mp);                    /* synchronize sequences  */
 395         context_save ();                  /* save the context file  */
 396     }
 397
 398     return done (0);
 399 }
 400
 401
 402 static RETSIGTYPE
 403 pipeser (int i)
 404 {
 405     if (i == SIGQUIT) {
 406         unlink ("core");
 407         fflush (stdout);
 408         fprintf (stderr, "\n");
 409         fflush (stderr);
 410     }
 411
 412     done (1);
 413     /* NOTREACHED */
 414 }
 415
 416
 417 int
 418 done (int status)
 419 {
 420     CT *ctp;
 421
 422     if ((ctp = cts))
 423         for (; *ctp; ctp++)
 424             free_content (*ctp);
 425
 426     exit (status);
 427     return 1;  /* dead code to satisfy the compiler */
 428 }