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 moreproc/mhlproc
  56 */
  57 #define PROGSW  14
  58         { "moreproc program", -4 },
  59 #define WIDTHSW  15
  60         { "width columns", -4 },
  61 /*
  62 ** switches for debugging
  63 */
  64 #define DEBUGSW  16
  65         { "debug", -5 },
  66         { NULL, 0 }
  67 };
  68
  69
  70 /* mhparse.c */
  71 extern char *tmp;  /* directory to place temp files */
  72
  73 /* mhcachesbr.c */
  74 extern int rcachesw;
  75 extern int wcachesw;
  76 extern char *cache_public;
  77 extern char *cache_private;
  78
  79 /* mhshowsbr.c */
  80 extern int serialsw;
  81 extern char *progsw;
  82 extern int nolist;
  83 extern char *formsw;
  84
  85 /* mhmisc.c */
  86 extern int npart;
  87 extern int ntype;
  88 extern char *parts[NPARTS + 1];
  89 extern char *types[NTYPES + 1];
  90 extern int userrs;
  91
  92 int debugsw = 0;
  93 int verbosw = 0;
  94
  95 #define quitser pipeser
  96
  97 /* mhparse.c */
  98 CT parse_mime(char *);
  99
 100 /* mhmisc.c */
 101 int part_ok(CT, int);
 102 int type_ok(CT, int);
 103 void set_endian(void);
 104 void flush_errors(void);
 105
 106 /* mhshowsbr.c */
 107 void show_all_messages(CT *);
 108
 109 /* mhfree.c */
 110 void free_content(CT);
 111 extern CT *cts;
 112 void freects_done(int) NORETURN;
 113
 114 /*
 115 ** static prototypes
 116 */
 117 static RETSIGTYPE pipeser(int);
 118
 119
 120 int
 121 main(int argc, char **argv)
 122 {
 123         int msgnum, *icachesw;
 124         char *cp, *file = NULL, *folder = NULL;
 125         char *maildir, buf[100], **argp;
 126         char **arguments;
 127         struct msgs_array msgs = { 0, 0, NULL };
 128         struct msgs *mp = NULL;
 129         CT ct, *ctp;
 130         FILE *fp;
 131
 132         done=freects_done;
 133
 134 #ifdef LOCALE
 135         setlocale(LC_ALL, "");
 136 #endif
 137         invo_name = mhbasename(argv[0]);
 138
 139         /* read user profile/context */
 140         context_read();
 141
 142         arguments = getarguments(invo_name, argc, argv, 1);
 143         argp = arguments;
 144
 145         /*
 146         ** Parse arguments
 147         */
 148         while ((cp = *argp++)) {
 149                 if (*cp == '-') {
 150                         switch (smatch(++cp, switches)) {
 151                         case AMBIGSW:
 152                                 ambigsw(cp, switches);
 153                                 done(1);
 154                         case UNKWNSW:
 155                                 adios(NULL, "-%s unknown", cp);
 156
 157                         case HELPSW:
 158                                 snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]", invo_name);
 159                                 print_help(buf, switches, 1);
 160                                 done(1);
 161                         case VERSIONSW:
 162                                 print_version(invo_name);
 163                                 done(1);
 164
 165                         case RCACHESW:
 166                                 icachesw = &rcachesw;
 167                                 goto do_cache;
 168                         case WCACHESW:
 169                                 icachesw = &wcachesw;
 170 do_cache:
 171                                 if (!(cp = *argp++) || *cp == '-')
 172                                         adios(NULL, "missing argument to %s",
 173                                                         argp[-2]);
 174                                 switch (*icachesw = smatch(cp, caches)) {
 175                                 case AMBIGSW:
 176                                         ambigsw(cp, caches);
 177                                         done(1);
 178                                 case UNKWNSW:
 179                                         adios(NULL, "%s unknown", cp);
 180                                 default:
 181                                         break;
 182                                 }
 183                                 continue;
 184
 185                         case CHECKSW:
 186                                 checksw++;
 187                                 continue;
 188                         case NCHECKSW:
 189                                 checksw = 0;
 190                                 continue;
 191
 192                         case SERIALSW:
 193                                 serialsw = 1;
 194                                 continue;
 195                         case NSERIALSW:
 196                                 serialsw = 0;
 197                                 continue;
 198
 199                         case PARTSW:
 200                                 if (!(cp = *argp++) || *cp == '-')
 201                                         adios(NULL, "missing argument to %s",
 202                                                         argp[-2]);
 203                                 if (npart >= NPARTS)
 204                                         adios(NULL, "too many parts (starting with %s), %d max", cp, NPARTS);
 205                                 parts[npart++] = cp;
 206                                 continue;
 207
 208                         case TYPESW:
 209                                 if (!(cp = *argp++) || *cp == '-')
 210                                         adios(NULL, "missing argument to %s",
 211                                                         argp[-2]);
 212                                 if (ntype >= NTYPES)
 213                                         adios(NULL, "too many types (starting with %s), %d max", cp, NTYPES);
 214                                 types[ntype++] = cp;
 215                                 continue;
 216
 217                         case FILESW:
 218                                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 219                                         adios(NULL, "missing argument to %s",
 220                                                         argp[-2]);
 221                                 file = *cp == '-' ? cp : getcpy(expanddir(cp));
 222                                 continue;
 223
 224                         case FORMSW:
 225                                 if (!(cp = *argp++) || *cp == '-')
 226                                         adios(NULL, "missing argument to %s",
 227                                                         argp[-2]);
 228                                 if (formsw)
 229                                         free(formsw);
 230                                 formsw = getcpy(etcpath(cp));
 231                                 continue;
 232
 233                         /*
 234                         ** Switches for moreproc/mhlproc
 235                         */
 236                         case PROGSW:
 237                                 if (!(progsw = *argp++) || *progsw == '-')
 238                                         adios(NULL, "missing argument to %s",
 239                                                         argp[-2]);
 240                                 continue;
 241
 242                         case WIDTHSW:
 243                                 if (!(cp = *argp++) || *cp == '-')
 244                                         adios(NULL, "missing argument to %s",
 245                                                         argp[-2]);
 246                                 continue;
 247
 248                         case VERBSW:
 249                                 verbosw = 1;
 250                                 continue;
 251                         case NVERBSW:
 252                                 verbosw = 0;
 253                                 continue;
 254                         case DEBUGSW:
 255                                 debugsw = 1;
 256                                 continue;
 257                         }
 258                 }
 259                 if (*cp == '+' || *cp == '@') {
 260                         if (folder)
 261                                 adios(NULL, "only one folder at a time!");
 262                         else
 263                                 folder = getcpy(expandfol(cp));
 264                 } else
 265                         app_msgarg(&msgs, cp);
 266         }
 267
 268         /* null terminate the list of acceptable parts/types */
 269         parts[npart] = NULL;
 270         types[ntype] = NULL;
 271
 272         set_endian();
 273
 274         if ((cp = getenv("MM_NOASK")) && strcmp(cp, "1")==0) {
 275                 nolist  = 1;
 276         }
 277
 278         /*
 279         ** Check if we've specified an additional profile
 280         */
 281         if ((cp = getenv("MHSHOW"))) {
 282                 if ((fp = fopen(cp, "r"))) {
 283                         readconfig((struct node **) 0, fp, cp, 0);
 284                         fclose(fp);
 285                 } else {
 286                         admonish("", "unable to read $MHSHOW profile (%s)",
 287                                         cp);
 288                 }
 289         }
 290
 291         /*
 292         ** Read the standard profile setup
 293         */
 294         if ((fp = fopen(cp = etcpath("mhn.defaults"), "r"))) {
 295                 readconfig((struct node **) 0, fp, cp, 0);
 296                 fclose(fp);
 297         }
 298
 299         /* Check for public cache location */
 300         if ((cache_public = context_find(nmhcache)) && *cache_public != '/')
 301                 cache_public = NULL;
 302
 303         /* Check for private cache location */
 304         if (!(cache_private = context_find(nmhprivcache)))
 305                 cache_private = ".cache";
 306         cache_private = getcpy(toabsdir(cache_private));
 307
 308         /*
 309         ** Check for storage directory.  If specified,
 310         ** then store temporary files there.  Else we
 311         ** store them in standard nmh directory.
 312         */
 313         if ((cp = context_find(nmhstorage)) && *cp)
 314                 tmp = concat(cp, "/", invo_name, NULL);
 315         else
 316                 tmp = getcpy(toabsdir(invo_name));
 317
 318         if (file && msgs.size)
 319                 adios(NULL, "cannot specify msg and file at same time!");
 320
 321         /*
 322         ** check if message is coming from file
 323         */
 324         if (file) {
 325                 if (!(cts = (CT *) calloc((size_t) 2, sizeof(*cts))))
 326                         adios(NULL, "out of memory");
 327                 ctp = cts;
 328
 329                 if ((ct = parse_mime(file)));
 330                         *ctp++ = ct;
 331         } else {
 332                 /*
 333                 ** message(s) are coming from a folder
 334                 */
 335                 if (!msgs.size)
 336                         app_msgarg(&msgs, seq_cur);
 337                 if (!folder)
 338                         folder = getcurfol();
 339                 maildir = toabsdir(folder);
 340
 341                 if (chdir(maildir) == NOTOK)
 342                         adios(maildir, "unable to change directory to");
 343
 344                 /* read folder and create message structure */
 345                 if (!(mp = folder_read(folder)))
 346                         adios(NULL, "unable to read folder %s", folder);
 347
 348                 /* check for empty folder */
 349                 if (mp->nummsg == 0)
 350                         adios(NULL, "no messages in %s", folder);
 351
 352                 /* parse all the message ranges/sequences and set SELECTED */
 353                 for (msgnum = 0; msgnum < msgs.size; msgnum++)
 354                         if (!m_convert(mp, msgs.msgs[msgnum]))
 355                                 done(1);
 356
 357                 /*
 358                 ** Set the SELECT_UNSEEN bit for all the SELECTED messages,
 359                 ** since we will use that as a tag to know which messages
 360                 ** to remove from the "unseen" sequence.
 361                 */
 362                 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 363                         if (is_selected(mp, msgnum))
 364                                 set_unseen(mp, msgnum);
 365
 366                 seq_setprev(mp);  /* set the Previous-Sequence */
 367                 seq_setunseen(mp, 0);  /* unset unseen seqs for shown msgs */
 368
 369                 if (!(cts = (CT *) calloc((size_t) (mp->numsel + 1),
 370                                 sizeof(*cts))))
 371                         adios(NULL, "out of memory");
 372                 ctp = cts;
 373
 374                 /*
 375                 ** Parse all the SELECTED messages.
 376                 */
 377                 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 378                         if (is_selected(mp, msgnum)) {
 379                                 char *msgnam;
 380
 381                                 msgnam = m_name(msgnum);
 382                                 if ((ct = parse_mime(msgnam)))
 383                                         *ctp++ = ct;
 384                         }
 385                 }
 386         }
 387
 388         if (!*cts)
 389                 done(1);
 390
 391         userrs = 1;
 392         SIGNAL(SIGQUIT, quitser);
 393         SIGNAL(SIGPIPE, pipeser);
 394
 395         /*
 396         ** Get the associated umask for the relevant contents.
 397         */
 398         for (ctp = cts; *ctp; ctp++) {
 399                 struct stat st;
 400
 401                 ct = *ctp;
 402                 if (type_ok(ct, 1) && !ct->c_umask) {
 403                         if (stat(ct->c_file, &st) != NOTOK)
 404                                 ct->c_umask = ~(st.st_mode & 0777);
 405                         else
 406                                 ct->c_umask = ~m_gmprot();
 407                 }
 408         }
 409
 410         /*
 411         ** Show the message content
 412         */
 413         show_all_messages(cts);
 414
 415         /* Now free all the structures for the content */
 416         for (ctp = cts; *ctp; ctp++)
 417                 free_content(*ctp);
 418
 419         free((char *) cts);
 420         cts = NULL;
 421
 422         /* If reading from a folder, do some updating */
 423         if (mp) {
 424                 context_replace(curfolder, folder); /* update current folder */
 425                 seq_setcur(mp, mp->hghsel);        /* update current message */
 426                 seq_save(mp);                      /* synchronize sequences */
 427                 context_save();                    /* save the context file */
 428         }
 429
 430         done(0);
 431         return 1;
 432 }
 433
 434
 435 static RETSIGTYPE
 436 pipeser(int i)
 437 {
 438         if (i == SIGQUIT) {
 439                 unlink("core");
 440                 fflush(stdout);
 441                 fprintf(stderr, "\n");
 442                 fflush(stderr);
 443         }
 444
 445         done(1);
 446         /* NOTREACHED */
 447 }