git.marmaro.de Git - mmh/blob - uip/mhshow.c

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