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