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