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