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