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