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/mts.h>
  16 #include <h/tws.h>
  17 #include <h/mime.h>
  18 #include <h/mhparse.h>
  19 #include <h/mhcachesbr.h>
  20 #include <h/utils.h>
  21
  22 #ifdef HAVE_SYS_WAIT_H
  23 # include <sys/wait.h>
  24 #endif
  25
  26 static struct swit switches[] = {
  27 #define CHECKSW  0
  28         { "check", 0 },
  29 #define NCHECKSW  1
  30         { "nocheck", 0 },
  31 #define PAUSESW  2
  32         { "pause", 0 },
  33 #define NPAUSESW  3
  34         { "nopause", 0 },
  35 #define SERIALSW  4
  36         { "serialonly", 0 },
  37 #define NSERIALSW  5
  38         { "noserialonly", 0 },
  39 #define VERBSW  6
  40         { "verbose", 0 },
  41 #define NVERBSW  7
  42         { "noverbose", 0 },
  43 #define FILESW  8  /* interface from show */
  44         { "file file", 0 },
  45 #define FORMSW  9
  46         { "form formfile", 0 },
  47 #define PARTSW  10
  48         { "part number", 0 },
  49 #define TYPESW  11
  50         { "type content", 0 },
  51 #define RCACHESW  12
  52         { "rcache policy", 0 },
  53 #define WCACHESW  13
  54         { "wcache policy", 0 },
  55 #define VERSIONSW  14
  56         { "version", 0 },
  57 #define HELPSW  15
  58         { "help", 0 },
  59
  60 /*
  61 ** switches for moreproc/mhlproc
  62 */
  63 #define PROGSW  16
  64         { "moreproc program", -4 },
  65 #define NPROGSW  17
  66         { "nomoreproc", -3 },
  67 #define LENSW  18
  68         { "length lines", -4 },
  69 #define WIDTHSW  19
  70         { "width columns", -4 },
  71
  72 /*
  73 ** switches for debugging
  74 */
  75 #define DEBUGSW  20
  76         { "debug", -5 },
  77         { NULL, 0 }
  78 };
  79
  80
  81 /* mhparse.c */
  82 extern char *tmp;  /* directory to place temp files */
  83
  84 /* mhcachesbr.c */
  85 extern int rcachesw;
  86 extern int wcachesw;
  87 extern char *cache_public;
  88 extern char *cache_private;
  89
  90 /* mhshowsbr.c */
  91 extern int pausesw;
  92 extern int serialsw;
  93 extern char *progsw;
  94 extern int nolist;
  95 extern int nomore;  /* flags for moreproc/header display */
  96 extern char *formsw;
  97
  98 /* mhmisc.c */
  99 extern int npart;
 100 extern int ntype;
 101 extern char *parts[NPARTS + 1];
 102 extern char *types[NTYPES + 1];
 103 extern int userrs;
 104
 105 int debugsw = 0;
 106 int verbosw = 0;
 107
 108 #define quitser pipeser
 109
 110 /* mhparse.c */
 111 CT parse_mime(char *);
 112
 113 /* mhmisc.c */
 114 int part_ok(CT, int);
 115 int type_ok(CT, int);
 116 void set_endian(void);
 117 void flush_errors(void);
 118
 119 /* mhshowsbr.c */
 120 void show_all_messages(CT *);
 121
 122 /* mhfree.c */
 123 void free_content(CT);
 124 extern CT *cts;
 125 void freects_done(int) NORETURN;
 126
 127 /*
 128 ** static prototypes
 129 */
 130 static RETSIGTYPE pipeser(int);
 131
 132
 133 int
 134 main(int argc, char **argv)
 135 {
 136         int msgnum, *icachesw;
 137         char *cp, *file = NULL, *folder = NULL;
 138         char *maildir, buf[100], **argp;
 139         char **arguments;
 140         struct msgs_array msgs = { 0, 0, NULL };
 141         struct msgs *mp = NULL;
 142         CT ct, *ctp;
 143         FILE *fp;
 144
 145         done=freects_done;
 146
 147 #ifdef LOCALE
 148         setlocale(LC_ALL, "");
 149 #endif
 150         invo_name = mhbasename(argv[0]);
 151
 152         /* read user profile/context */
 153         context_read();
 154
 155         arguments = getarguments(invo_name, argc, argv, 1);
 156         argp = arguments;
 157
 158         /*
 159         ** Parse arguments
 160         */
 161         while ((cp = *argp++)) {
 162                 if (*cp == '-') {
 163                         switch (smatch(++cp, switches)) {
 164                         case AMBIGSW:
 165                                 ambigsw(cp, switches);
 166                                 done(1);
 167                         case UNKWNSW:
 168                                 adios(NULL, "-%s unknown", cp);
 169
 170                         case HELPSW:
 171                                 snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]", invo_name);
 172                                 print_help(buf, switches, 1);
 173                                 done(1);
 174                         case VERSIONSW:
 175                                 print_version(invo_name);
 176                                 done(1);
 177
 178                         case RCACHESW:
 179                                 icachesw = &rcachesw;
 180                                 goto do_cache;
 181                         case WCACHESW:
 182                                 icachesw = &wcachesw;
 183 do_cache:
 184                                 if (!(cp = *argp++) || *cp == '-')
 185                                         adios(NULL, "missing argument to %s",
 186                                                         argp[-2]);
 187                                 switch (*icachesw = smatch(cp, caches)) {
 188                                 case AMBIGSW:
 189                                         ambigsw(cp, caches);
 190                                         done(1);
 191                                 case UNKWNSW:
 192                                         adios(NULL, "%s unknown", cp);
 193                                 default:
 194                                         break;
 195                                 }
 196                                 continue;
 197
 198                         case CHECKSW:
 199                                 checksw++;
 200                                 continue;
 201                         case NCHECKSW:
 202                                 checksw = 0;
 203                                 continue;
 204
 205                         case PAUSESW:
 206                                 pausesw = 1;
 207                                 continue;
 208                         case NPAUSESW:
 209                                 pausesw = 0;
 210                                 continue;
 211
 212                         case SERIALSW:
 213                                 serialsw = 1;
 214                                 continue;
 215                         case NSERIALSW:
 216                                 serialsw = 0;
 217                                 continue;
 218
 219                         case PARTSW:
 220                                 if (!(cp = *argp++) || *cp == '-')
 221                                         adios(NULL, "missing argument to %s",
 222                                                         argp[-2]);
 223                                 if (npart >= NPARTS)
 224                                         adios(NULL, "too many parts (starting with %s), %d max", cp, NPARTS);
 225                                 parts[npart++] = cp;
 226                                 continue;
 227
 228                         case TYPESW:
 229                                 if (!(cp = *argp++) || *cp == '-')
 230                                         adios(NULL, "missing argument to %s",
 231                                                         argp[-2]);
 232                                 if (ntype >= NTYPES)
 233                                         adios(NULL, "too many types (starting with %s), %d max", cp, NTYPES);
 234                                 types[ntype++] = cp;
 235                                 continue;
 236
 237                         case FILESW:
 238                                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 239                                         adios(NULL, "missing argument to %s",
 240                                                         argp[-2]);
 241                                 file = *cp == '-' ? cp : getcpy(expanddir(cp));
 242                                 continue;
 243
 244                         case FORMSW:
 245                                 if (!(cp = *argp++) || *cp == '-')
 246                                         adios(NULL, "missing argument to %s",
 247                                                         argp[-2]);
 248                                 if (formsw)
 249                                         free(formsw);
 250                                 formsw = getcpy(etcpath(cp));
 251                                 continue;
 252
 253                         /*
 254                         ** Switches for moreproc/mhlproc
 255                         */
 256                         case PROGSW:
 257                                 if (!(progsw = *argp++) || *progsw == '-')
 258                                         adios(NULL, "missing argument to %s",
 259                                                         argp[-2]);
 260                                 continue;
 261                         case NPROGSW:
 262                                 nomore++;
 263                                 continue;
 264
 265                         case LENSW:
 266                         case WIDTHSW:
 267                                 if (!(cp = *argp++) || *cp == '-')
 268                                         adios(NULL, "missing argument to %s",
 269                                                         argp[-2]);
 270                                 continue;
 271
 272                         case VERBSW:
 273                                 verbosw = 1;
 274                                 continue;
 275                         case NVERBSW:
 276                                 verbosw = 0;
 277                                 continue;
 278                         case DEBUGSW:
 279                                 debugsw = 1;
 280                                 continue;
 281                         }
 282                 }
 283                 if (*cp == '+' || *cp == '@') {
 284                         if (folder)
 285                                 adios(NULL, "only one folder at a time!");
 286                         else
 287                                 folder = getcpy(expandfol(cp));
 288                 } else
 289                         app_msgarg(&msgs, cp);
 290         }
 291
 292         /* null terminate the list of acceptable parts/types */
 293         parts[npart] = NULL;
 294         types[ntype] = NULL;
 295
 296         set_endian();
 297
 298         if ((cp = getenv("MM_NOASK")) && !strcmp(cp, "1")) {
 299                 nolist  = 1;
 300                 pausesw = 0;
 301         }
 302
 303         /*
 304         ** Check if we've specified an additional profile
 305         */
 306         if ((cp = getenv("MHSHOW"))) {
 307                 if ((fp = fopen(cp, "r"))) {
 308                         readconfig((struct node **) 0, fp, cp, 0);
 309                         fclose(fp);
 310                 } else {
 311                         admonish("", "unable to read $MHSHOW profile (%s)",
 312                                         cp);
 313                 }
 314         }
 315
 316         /*
 317         ** Read the standard profile setup
 318         */
 319         if ((fp = fopen(cp = etcpath("mhn.defaults"), "r"))) {
 320                 readconfig((struct node **) 0, fp, cp, 0);
 321                 fclose(fp);
 322         }
 323
 324         /* Check for public cache location */
 325         if ((cache_public = context_find(nmhcache)) && *cache_public != '/')
 326                 cache_public = NULL;
 327
 328         /* Check for private cache location */
 329         if (!(cache_private = context_find(nmhprivcache)))
 330                 cache_private = ".cache";
 331         cache_private = getcpy(toabsdir(cache_private));
 332
 333         /*
 334         ** Check for storage directory.  If specified,
 335         ** then store temporary files there.  Else we
 336         ** store them in standard nmh directory.
 337         */
 338         if ((cp = context_find(nmhstorage)) && *cp)
 339                 tmp = concat(cp, "/", invo_name, NULL);
 340         else
 341                 tmp = getcpy(toabsdir(invo_name));
 342
 343         if (file && msgs.size)
 344                 adios(NULL, "cannot specify msg and file at same time!");
 345
 346         /*
 347         ** check if message is coming from file
 348         */
 349         if (file) {
 350                 if (!(cts = (CT *) calloc((size_t) 2, sizeof(*cts))))
 351                         adios(NULL, "out of memory");
 352                 ctp = cts;
 353
 354                 if ((ct = parse_mime(file)));
 355                         *ctp++ = ct;
 356         } else {
 357                 /*
 358                 ** message(s) are coming from a folder
 359                 */
 360                 if (!msgs.size)
 361                         app_msgarg(&msgs, seq_cur);
 362                 if (!folder)
 363                         folder = getcurfol();
 364                 maildir = toabsdir(folder);
 365
 366                 if (chdir(maildir) == NOTOK)
 367                         adios(maildir, "unable to change directory to");
 368
 369                 /* read folder and create message structure */
 370                 if (!(mp = folder_read(folder)))
 371                         adios(NULL, "unable to read folder %s", folder);
 372
 373                 /* check for empty folder */
 374                 if (mp->nummsg == 0)
 375                         adios(NULL, "no messages in %s", folder);
 376
 377                 /* parse all the message ranges/sequences and set SELECTED */
 378                 for (msgnum = 0; msgnum < msgs.size; msgnum++)
 379                         if (!m_convert(mp, msgs.msgs[msgnum]))
 380                                 done(1);
 381
 382                 /*
 383                 ** Set the SELECT_UNSEEN bit for all the SELECTED messages,
 384                 ** since we will use that as a tag to know which messages
 385                 ** to remove from the "unseen" sequence.
 386                 */
 387                 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 388                         if (is_selected(mp, msgnum))
 389                                 set_unseen(mp, msgnum);
 390
 391                 seq_setprev(mp);  /* set the Previous-Sequence */
 392                 seq_setunseen(mp, 0);  /* unset unseen seqs for shown msgs */
 393
 394                 if (!(cts = (CT *) calloc((size_t) (mp->numsel + 1),
 395                                 sizeof(*cts))))
 396                         adios(NULL, "out of memory");
 397                 ctp = cts;
 398
 399                 /*
 400                 ** Parse all the SELECTED messages.
 401                 */
 402                 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 403                         if (is_selected(mp, msgnum)) {
 404                                 char *msgnam;
 405
 406                                 msgnam = m_name(msgnum);
 407                                 if ((ct = parse_mime(msgnam)))
 408                                         *ctp++ = ct;
 409                         }
 410                 }
 411         }
 412
 413         if (!*cts)
 414                 done(1);
 415
 416         userrs = 1;
 417         SIGNAL(SIGQUIT, quitser);
 418         SIGNAL(SIGPIPE, pipeser);
 419
 420         /*
 421         ** Get the associated umask for the relevant contents.
 422         */
 423         for (ctp = cts; *ctp; ctp++) {
 424                 struct stat st;
 425
 426                 ct = *ctp;
 427                 if (type_ok(ct, 1) && !ct->c_umask) {
 428                         if (stat(ct->c_file, &st) != NOTOK)
 429                                 ct->c_umask = ~(st.st_mode & 0777);
 430                         else
 431                                 ct->c_umask = ~m_gmprot();
 432                 }
 433         }
 434
 435         /*
 436         ** Show the message content
 437         */
 438         show_all_messages(cts);
 439
 440         /* Now free all the structures for the content */
 441         for (ctp = cts; *ctp; ctp++)
 442                 free_content(*ctp);
 443
 444         free((char *) cts);
 445         cts = NULL;
 446
 447         /* If reading from a folder, do some updating */
 448         if (mp) {
 449                 context_replace(curfolder, folder); /* update current folder */
 450                 seq_setcur(mp, mp->hghsel);        /* update current message */
 451                 seq_save(mp);                      /* synchronize sequences */
 452                 context_save();                    /* save the context file */
 453         }
 454
 455         done(0);
 456         return 1;
 457 }
 458
 459
 460 static RETSIGTYPE
 461 pipeser(int i)
 462 {
 463         if (i == SIGQUIT) {
 464                 unlink("core");
 465                 fflush(stdout);
 466                 fprintf(stderr, "\n");
 467                 fflush(stderr);
 468         }
 469
 470         done(1);
 471         /* NOTREACHED */
 472 }