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 <errno.h>
  13 #include <signal.h>
  14 #include <h/tws.h>
  15 #include <h/mime.h>
  16 #include <h/mhparse.h>
  17 #include <h/mhcachesbr.h>
  18 #include <h/utils.h>
  19
  20 static struct swit switches[] = {
  21 #define VERBSW  0
  22         { "verbose", 0 },
  23 #define NVERBSW  1
  24         { "noverbose", 0 },
  25 #define FILESW  2  /* interface from show */
  26         { "file file", 0 },
  27 #define FORMSW  3
  28         { "form formfile", 0 },
  29 #define PARTSW  4
  30         { "part number", 0 },
  31 #define TYPESW  5
  32         { "type content", 0 },
  33 #define RCACHESW  6
  34         { "rcache policy", 0 },
  35 #define WCACHESW  7
  36         { "wcache policy", 0 },
  37 #define VERSIONSW  8
  38         { "version", 0 },
  39 #define HELPSW  9
  40         { "help", 0 },
  41 #define DEBUGSW  10
  42         { "debug", -5 },
  43         { NULL, 0 }
  44 };
  45
  46
  47 /* mhparse.c */
  48 extern char *tmp;  /* directory to place temp files */
  49
  50 /* mhcachesbr.c */
  51 extern int rcachesw;
  52 extern int wcachesw;
  53 extern char *cache_public;
  54 extern char *cache_private;
  55
  56 /* mhshowsbr.c */
  57 extern int nolist;
  58 extern char *formsw;
  59
  60 /* mhmisc.c */
  61 extern int npart;
  62 extern int ntype;
  63 extern char *parts[NPARTS + 1];
  64 extern char *types[NTYPES + 1];
  65 extern int userrs;
  66
  67 int debugsw = 0;
  68 int verbosw = 0;
  69
  70 #define quitser pipeser
  71
  72 /* mhparse.c */
  73 CT parse_mime(char *);
  74
  75 /* mhmisc.c */
  76 int part_ok(CT, int);
  77 int type_ok(CT, int);
  78 void set_endian(void);
  79 void flush_errors(void);
  80
  81 /* mhshowsbr.c */
  82 void show_all_messages(CT *);
  83
  84 /* mhfree.c */
  85 void free_content(CT);
  86 extern CT *cts;
  87 void freects_done(int) NORETURN;
  88
  89 /*
  90 ** static prototypes
  91 */
  92 static void pipeser(int);
  93
  94
  95 int
  96 main(int argc, char **argv)
  97 {
  98         int msgnum, *icachesw;
  99         char *cp, *file = NULL, *folder = NULL;
 100         char *maildir, buf[100], **argp;
 101         char **arguments;
 102         struct msgs_array msgs = { 0, 0, NULL };
 103         struct msgs *mp = NULL;
 104         CT ct, *ctp;
 105         FILE *fp;
 106
 107         done=freects_done;
 108
 109 #ifdef LOCALE
 110         setlocale(LC_ALL, "");
 111 #endif
 112         invo_name = mhbasename(argv[0]);
 113
 114         /* read user profile/context */
 115         context_read();
 116
 117         arguments = getarguments(invo_name, argc, argv, 1);
 118         argp = arguments;
 119
 120         /*
 121         ** Parse arguments
 122         */
 123         while ((cp = *argp++)) {
 124                 if (*cp == '-') {
 125                         switch (smatch(++cp, switches)) {
 126                         case AMBIGSW:
 127                                 ambigsw(cp, switches);
 128                                 done(1);
 129                         case UNKWNSW:
 130                                 adios(NULL, "-%s unknown", cp);
 131
 132                         case HELPSW:
 133                                 snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]", invo_name);
 134                                 print_help(buf, switches, 1);
 135                                 done(1);
 136                         case VERSIONSW:
 137                                 print_version(invo_name);
 138                                 done(1);
 139
 140                         case RCACHESW:
 141                                 icachesw = &rcachesw;
 142                                 goto do_cache;
 143                         case WCACHESW:
 144                                 icachesw = &wcachesw;
 145 do_cache:
 146                                 if (!(cp = *argp++) || *cp == '-')
 147                                         adios(NULL, "missing argument to %s",
 148                                                         argp[-2]);
 149                                 switch (*icachesw = smatch(cp, caches)) {
 150                                 case AMBIGSW:
 151                                         ambigsw(cp, caches);
 152                                         done(1);
 153                                 case UNKWNSW:
 154                                         adios(NULL, "%s unknown", cp);
 155                                 default:
 156                                         break;
 157                                 }
 158                                 continue;
 159
 160                         case PARTSW:
 161                                 if (!(cp = *argp++) || *cp == '-')
 162                                         adios(NULL, "missing argument to %s",
 163                                                         argp[-2]);
 164                                 if (npart >= NPARTS)
 165                                         adios(NULL, "too many parts (starting with %s), %d max", cp, NPARTS);
 166                                 parts[npart++] = cp;
 167                                 continue;
 168
 169                         case TYPESW:
 170                                 if (!(cp = *argp++) || *cp == '-')
 171                                         adios(NULL, "missing argument to %s",
 172                                                         argp[-2]);
 173                                 if (ntype >= NTYPES)
 174                                         adios(NULL, "too many types (starting with %s), %d max", cp, NTYPES);
 175                                 types[ntype++] = cp;
 176                                 continue;
 177
 178                         case FILESW:
 179                                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 180                                         adios(NULL, "missing argument to %s",
 181                                                         argp[-2]);
 182                                 file = *cp == '-' ? cp : getcpy(expanddir(cp));
 183                                 continue;
 184
 185                         case FORMSW:
 186                                 if (!(cp = *argp++) || *cp == '-')
 187                                         adios(NULL, "missing argument to %s",
 188                                                         argp[-2]);
 189                                 if (formsw)
 190                                         free(formsw);
 191                                 formsw = getcpy(etcpath(cp));
 192                                 continue;
 193
 194                         case VERBSW:
 195                                 verbosw = 1;
 196                                 continue;
 197                         case NVERBSW:
 198                                 verbosw = 0;
 199                                 continue;
 200                         case DEBUGSW:
 201                                 debugsw = 1;
 202                                 continue;
 203                         }
 204                 }
 205                 if (*cp == '+' || *cp == '@') {
 206                         if (folder)
 207                                 adios(NULL, "only one folder at a time!");
 208                         else
 209                                 folder = getcpy(expandfol(cp));
 210                 } else
 211                         app_msgarg(&msgs, cp);
 212         }
 213
 214         /* null terminate the list of acceptable parts/types */
 215         parts[npart] = NULL;
 216         types[ntype] = NULL;
 217
 218         set_endian();
 219
 220         if ((cp = getenv("MM_NOASK")) && strcmp(cp, "1")==0) {
 221                 nolist  = 1;
 222         }
 223
 224         /*
 225         ** Check if we've specified an additional profile
 226         */
 227         if ((cp = getenv("MHSHOW"))) {
 228                 if ((fp = fopen(cp, "r"))) {
 229                         readconfig((struct node **) 0, fp, cp, 0);
 230                         fclose(fp);
 231                 } else {
 232                         admonish("", "unable to read $MHSHOW profile (%s)",
 233                                         cp);
 234                 }
 235         }
 236
 237         /*
 238         ** Read the standard profile setup
 239         */
 240         if ((fp = fopen(cp = etcpath("mhn.defaults"), "r"))) {
 241                 readconfig((struct node **) 0, fp, cp, 0);
 242                 fclose(fp);
 243         }
 244
 245         /* Check for public cache location */
 246         if ((cache_public = context_find(nmhcache)) && *cache_public != '/')
 247                 cache_public = NULL;
 248
 249         /* Check for private cache location */
 250         if (!(cache_private = context_find(nmhprivcache)))
 251                 cache_private = ".cache";
 252         cache_private = getcpy(toabsdir(cache_private));
 253
 254         /*
 255         ** Check for storage directory.  If specified,
 256         ** then store temporary files there.  Else we
 257         ** store them in standard nmh directory.
 258         */
 259         if ((cp = context_find(nmhstorage)) && *cp)
 260                 tmp = concat(cp, "/", invo_name, NULL);
 261         else
 262                 tmp = getcpy(toabsdir(invo_name));
 263
 264         if (file && msgs.size)
 265                 adios(NULL, "cannot specify msg and file at same time!");
 266
 267         /*
 268         ** check if message is coming from file
 269         */
 270         if (file) {
 271                 if (!(cts = (CT *) calloc((size_t) 2, sizeof(*cts))))
 272                         adios(NULL, "out of memory");
 273                 ctp = cts;
 274
 275                 if ((ct = parse_mime(file)))
 276                         *ctp++ = ct;
 277         } else {
 278                 /*
 279                 ** message(s) are coming from a folder
 280                 */
 281                 if (!msgs.size)
 282                         app_msgarg(&msgs, seq_cur);
 283                 if (!folder)
 284                         folder = getcurfol();
 285                 maildir = toabsdir(folder);
 286
 287                 if (chdir(maildir) == NOTOK)
 288                         adios(maildir, "unable to change directory to");
 289
 290                 /* read folder and create message structure */
 291                 if (!(mp = folder_read(folder)))
 292                         adios(NULL, "unable to read folder %s", folder);
 293
 294                 /* check for empty folder */
 295                 if (mp->nummsg == 0)
 296                         adios(NULL, "no messages in %s", folder);
 297
 298                 /* parse all the message ranges/sequences and set SELECTED */
 299                 for (msgnum = 0; msgnum < msgs.size; msgnum++)
 300                         if (!m_convert(mp, msgs.msgs[msgnum]))
 301                                 done(1);
 302
 303                 /*
 304                 ** Set the SELECT_UNSEEN bit for all the SELECTED messages,
 305                 ** since we will use that as a tag to know which messages
 306                 ** to remove from the "unseen" sequence.
 307                 */
 308                 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 309                         if (is_selected(mp, msgnum))
 310                                 set_unseen(mp, msgnum);
 311
 312                 seq_setprev(mp);  /* set the Previous-Sequence */
 313                 seq_setunseen(mp, 0);  /* unset unseen seqs for shown msgs */
 314
 315                 if (!(cts = (CT *) calloc((size_t) (mp->numsel + 1),
 316                                 sizeof(*cts))))
 317                         adios(NULL, "out of memory");
 318                 ctp = cts;
 319
 320                 /*
 321                 ** Parse all the SELECTED messages.
 322                 */
 323                 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 324                         if (is_selected(mp, msgnum)) {
 325                                 char *msgnam;
 326
 327                                 msgnam = m_name(msgnum);
 328                                 if ((ct = parse_mime(msgnam)))
 329                                         *ctp++ = ct;
 330                         }
 331                 }
 332         }
 333
 334         if (!*cts)
 335                 done(1);
 336
 337         userrs = 1;
 338         SIGNAL(SIGQUIT, quitser);
 339         SIGNAL(SIGPIPE, pipeser);
 340
 341         /*
 342         ** Get the associated umask for the relevant contents.
 343         */
 344         for (ctp = cts; *ctp; ctp++) {
 345                 struct stat st;
 346
 347                 ct = *ctp;
 348                 if (type_ok(ct, 1) && !ct->c_umask) {
 349                         if (stat(ct->c_file, &st) != NOTOK)
 350                                 ct->c_umask = ~(st.st_mode & 0777);
 351                         else
 352                                 ct->c_umask = ~m_gmprot();
 353                 }
 354         }
 355
 356         /*
 357         ** Show the message content
 358         */
 359         show_all_messages(cts);
 360
 361         /* Now free all the structures for the content */
 362         for (ctp = cts; *ctp; ctp++)
 363                 free_content(*ctp);
 364
 365         free((char *) cts);
 366         cts = NULL;
 367
 368         /* If reading from a folder, do some updating */
 369         if (mp) {
 370                 context_replace(curfolder, folder); /* update current folder */
 371                 seq_setcur(mp, mp->hghsel);        /* update current message */
 372                 seq_save(mp);                      /* synchronize sequences */
 373                 context_save();                    /* save the context file */
 374         }
 375
 376         done(0);
 377         return 1;
 378 }
 379
 380
 381 static void
 382 pipeser(int i)
 383 {
 384         if (i == SIGQUIT) {
 385                 unlink("core");
 386                 fflush(stdout);
 387                 fprintf(stderr, "\n");
 388                 fflush(stderr);
 389         }
 390
 391         done(1);
 392         /* NOTREACHED */
 393 }