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