diplodocus.org Git - nmh/blob - uip/mhshow.c

   1
   2 /*
   3  * mhshow.c -- display the contents of MIME messages
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <fcntl.h>
  12 #include <h/signals.h>
  13 #include <h/md5.h>
  14 #include <h/mts.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 #define MHSHOW_SWITCHES \
  22     X("check", 0, CHECKSW) \
  23     X("nocheck", 0, NCHECKSW) \
  24     X("pause", 0, PAUSESW) \
  25     X("nopause", 0, NPAUSESW) \
  26     X("serialonly", 0, SERIALSW) \
  27     X("noserialonly", 0, NSERIALSW) \
  28     X("verbose", 0, VERBSW) \
  29     X("noverbose", 0, NVERBSW) \
  30     X("file file", 0, FILESW) \
  31     X("form formfile", 0, FORMSW) \
  32     X("part number", 0, PARTSW) \
  33     X("type content", 0, TYPESW) \
  34     X("rcache policy", 0, RCACHESW) \
  35     X("wcache policy", 0, WCACHESW) \
  36     X("version", 0, VERSIONSW) \
  37     X("help", 0, HELPSW) \
  38     /*                                  \
  39      * switches for moreproc/mhlproc    \
  40      */                                 \
  41     X("moreproc program", -4, PROGSW) \
  42     X("nomoreproc", -3, NPROGSW) \
  43     X("length lines", -4, LENSW) \
  44     X("width columns", -4, WIDTHSW) \
  45     /*                          \
  46      * switches for debugging   \
  47      */                         \
  48     X("debug", -5, DEBUGSW) \
  49
  50 #define X(sw, minchars, id) id,
  51 DEFINE_SWITCH_ENUM(MHSHOW);
  52 #undef X
  53
  54 #define X(sw, minchars, id) { sw, minchars, id },
  55 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  56 #undef X
  57
  58
  59 /* mhparse.c */
  60 extern char *tmp;       /* directory to place temp files */
  61
  62 /* mhcachesbr.c */
  63 extern int rcachesw;
  64 extern int wcachesw;
  65 extern char *cache_public;
  66 extern char *cache_private;
  67
  68 /* mhshowsbr.c */
  69 extern int pausesw;
  70 extern int serialsw;
  71 extern char *progsw;
  72 extern int nomore;      /* flags for moreproc/header display */
  73 extern char *formsw;
  74
  75 /* mhmisc.c */
  76 extern int npart;
  77 extern int ntype;
  78 extern char *parts[NPARTS + 1];
  79 extern char *types[NTYPES + 1];
  80 extern int userrs;
  81
  82 int debugsw = 0;
  83 int verbosw = 0;
  84
  85 #define quitser pipeser
  86
  87 /* mhparse.c */
  88 CT parse_mime (char *);
  89
  90 /* mhmisc.c */
  91 int part_ok (CT, int);
  92 int type_ok (CT, int);
  93 void flush_errors (void);
  94
  95 /* mhshowsbr.c */
  96 void show_all_messages (CT *);
  97
  98 /* mhfree.c */
  99 extern CT *cts;
 100 void freects_done (int) NORETURN;
 101
 102 /*
 103  * static prototypes
 104  */
 105 static void pipeser (int);
 106
 107
 108 int
 109 main (int argc, char **argv)
 110 {
 111     int msgnum, *icachesw;
 112     char *cp, *file = NULL, *folder = NULL;
 113     char *maildir, buf[100], **argp;
 114     char **arguments;
 115     struct msgs_array msgs = { 0, 0, NULL };
 116     struct msgs *mp = NULL;
 117     CT ct, *ctp;
 118     FILE *fp;
 119
 120     done=freects_done;
 121
 122     setlocale(LC_ALL, "");
 123     invo_name = r1bindex (argv[0], '/');
 124
 125     /* read user profile/context */
 126     context_read();
 127
 128     arguments = getarguments (invo_name, argc, argv, 1);
 129     argp = arguments;
 130
 131     /*
 132      * Parse arguments
 133      */
 134     while ((cp = *argp++)) {
 135         if (*cp == '-') {
 136             switch (smatch (++cp, switches)) {
 137             case AMBIGSW:
 138                 ambigsw (cp, switches);
 139                 done (1);
 140             case UNKWNSW:
 141                 adios (NULL, "-%s unknown", cp);
 142
 143             case HELPSW:
 144                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 145                         invo_name);
 146                 print_help (buf, switches, 1);
 147                 done (0);
 148             case VERSIONSW:
 149                 print_version(invo_name);
 150                 done (0);
 151
 152             case RCACHESW:
 153                 icachesw = &rcachesw;
 154                 goto do_cache;
 155             case WCACHESW:
 156                 icachesw = &wcachesw;
 157 do_cache:
 158                 if (!(cp = *argp++) || *cp == '-')
 159                     adios (NULL, "missing argument to %s", argp[-2]);
 160                 switch (*icachesw = smatch (cp, caches)) {
 161                 case AMBIGSW:
 162                     ambigsw (cp, caches);
 163                     done (1);
 164                 case UNKWNSW:
 165                     adios (NULL, "%s unknown", cp);
 166                 default:
 167                     break;
 168                 }
 169                 continue;
 170
 171             case CHECKSW:
 172                 checksw++;
 173                 continue;
 174             case NCHECKSW:
 175                 checksw = 0;
 176                 continue;
 177
 178             case PAUSESW:
 179                 pausesw = 1;
 180                 continue;
 181             case NPAUSESW:
 182                 pausesw = 0;
 183                 continue;
 184
 185             case SERIALSW:
 186                 serialsw = 1;
 187                 continue;
 188             case NSERIALSW:
 189                 serialsw = 0;
 190                 continue;
 191
 192             case PARTSW:
 193                 if (!(cp = *argp++) || *cp == '-')
 194                     adios (NULL, "missing argument to %s", argp[-2]);
 195                 if (npart >= NPARTS)
 196                     adios (NULL, "too many parts (starting with %s), %d max",
 197                            cp, NPARTS);
 198                 parts[npart++] = cp;
 199                 continue;
 200
 201             case TYPESW:
 202                 if (!(cp = *argp++) || *cp == '-')
 203                     adios (NULL, "missing argument to %s", argp[-2]);
 204                 if (ntype >= NTYPES)
 205                     adios (NULL, "too many types (starting with %s), %d max",
 206                            cp, NTYPES);
 207                 types[ntype++] = cp;
 208                 continue;
 209
 210             case FILESW:
 211                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 212                     adios (NULL, "missing argument to %s", argp[-2]);
 213                 file = *cp == '-' ? cp : path (cp, TFILE);
 214                 continue;
 215
 216             case FORMSW:
 217                 if (!(cp = *argp++) || *cp == '-')
 218                     adios (NULL, "missing argument to %s", argp[-2]);
 219                 if (formsw)
 220                     free (formsw);
 221                 formsw = getcpy (etcpath (cp));
 222                 continue;
 223
 224             /*
 225              * Switches for moreproc/mhlproc
 226              */
 227             case PROGSW:
 228                 if (!(progsw = *argp++) || *progsw == '-')
 229                     adios (NULL, "missing argument to %s", argp[-2]);
 230                 continue;
 231             case NPROGSW:
 232                 nomore++;
 233                 continue;
 234
 235             case LENSW:
 236             case WIDTHSW:
 237                 if (!(cp = *argp++) || *cp == '-')
 238                     adios (NULL, "missing argument to %s", argp[-2]);
 239                 continue;
 240
 241             case VERBSW:
 242                 verbosw = 1;
 243                 continue;
 244             case NVERBSW:
 245                 verbosw = 0;
 246                 continue;
 247             case DEBUGSW:
 248                 debugsw = 1;
 249                 continue;
 250             }
 251         }
 252         if (*cp == '+' || *cp == '@') {
 253             if (folder)
 254                 adios (NULL, "only one folder at a time!");
 255             else
 256                 folder = pluspath (cp);
 257         } else
 258                 app_msgarg(&msgs, cp);
 259     }
 260
 261     /* null terminate the list of acceptable parts/types */
 262     parts[npart] = NULL;
 263     types[ntype] = NULL;
 264
 265     /*
 266      * Check if we've specified an additional profile
 267      */
 268     if ((cp = getenv ("MHSHOW"))) {
 269         if ((fp = fopen (cp, "r"))) {
 270             readconfig ((struct node **) 0, fp, cp, 0);
 271             fclose (fp);
 272         } else {
 273             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 274         }
 275     }
 276
 277     /*
 278      * Read the standard profile setup
 279      */
 280     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 281         readconfig ((struct node **) 0, fp, cp, 0);
 282         fclose (fp);
 283     }
 284
 285     /* Check for public cache location */
 286     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 287         cache_public = NULL;
 288
 289     /* Check for private cache location */
 290     if (!(cache_private = context_find (nmhprivcache)))
 291         cache_private = ".cache";
 292     cache_private = getcpy (m_maildir (cache_private));
 293
 294     /*
 295      * Check for storage directory.  If specified,
 296      * then store temporary files there.  Else we
 297      * store them in standard nmh directory.
 298      */
 299     if ((cp = context_find (nmhstorage)) && *cp)
 300         tmp = concat (cp, "/", invo_name, NULL);
 301     else
 302         tmp = add (m_maildir (invo_name), NULL);
 303
 304     if (!context_find ("path"))
 305         free (path ("./", TFOLDER));
 306
 307     if (file && msgs.size)
 308         adios (NULL, "cannot specify msg and file at same time!");
 309
 310     /*
 311      * check if message is coming from file
 312      */
 313     if (file) {
 314         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 315             adios (NULL, "out of memory");
 316         ctp = cts;
 317
 318         if ((ct = parse_mime (file)))
 319             *ctp++ = ct;
 320     } else {
 321         /*
 322          * message(s) are coming from a folder
 323          */
 324         if (!msgs.size)
 325             app_msgarg(&msgs, "cur");
 326         if (!folder)
 327             folder = getfolder (1);
 328         maildir = m_maildir (folder);
 329
 330         if (chdir (maildir) == NOTOK)
 331             adios (maildir, "unable to change directory to");
 332
 333         /* read folder and create message structure */
 334         if (!(mp = folder_read (folder, 1)))
 335             adios (NULL, "unable to read folder %s", folder);
 336
 337         /* check for empty folder */
 338         if (mp->nummsg == 0)
 339             adios (NULL, "no messages in %s", folder);
 340
 341         /* parse all the message ranges/sequences and set SELECTED */
 342         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 343             if (!m_convert (mp, msgs.msgs[msgnum]))
 344                 done (1);
 345
 346         /*
 347          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 348          * since we will use that as a tag to know which messages
 349          * to remove from the "unseen" sequence.
 350          */
 351         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 352             if (is_selected(mp, msgnum))
 353                 set_unseen (mp, msgnum);
 354
 355         seq_setprev (mp);       /* set the Previous-Sequence */
 356         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 357
 358         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 359             adios (NULL, "out of memory");
 360         ctp = cts;
 361
 362         /*
 363          * Parse all the SELECTED messages.
 364          */
 365         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 366             if (is_selected(mp, msgnum)) {
 367                 char *msgnam;
 368
 369                 msgnam = m_name (msgnum);
 370                 if ((ct = parse_mime (msgnam)))
 371                     *ctp++ = ct;
 372             }
 373         }
 374     }
 375
 376     if (!*cts)
 377         done (1);
 378
 379     userrs = 1;
 380     SIGNAL (SIGQUIT, quitser);
 381     SIGNAL (SIGPIPE, pipeser);
 382
 383     /*
 384      * Get the associated umask for the relevant contents.
 385      */
 386     for (ctp = cts; *ctp; ctp++) {
 387         struct stat st;
 388
 389         ct = *ctp;
 390         if (type_ok (ct, 1) && !ct->c_umask) {
 391             if (stat (ct->c_file, &st) != NOTOK)
 392                 ct->c_umask = ~(st.st_mode & 0777);
 393             else
 394                 ct->c_umask = ~m_gmprot();
 395         }
 396     }
 397
 398     /* If reading from a folder, do some updating */
 399     if (mp) {
 400         context_replace (pfolder, folder);/* update current folder  */
 401         seq_setcur (mp, mp->hghsel);      /* update current message */
 402         seq_save (mp);                    /* synchronize sequences  */
 403         context_save ();                  /* save the context file  */
 404     }
 405
 406     /*
 407      * Show the message content
 408      */
 409     show_all_messages (cts);
 410
 411     /* Now free all the structures for the content */
 412     for (ctp = cts; *ctp; ctp++)
 413         free_content (*ctp);
 414
 415     free ((char *) cts);
 416     cts = NULL;
 417
 418     done (0);
 419     return 1;
 420 }
 421
 422
 423 static void
 424 pipeser (int i)
 425 {
 426     if (i == SIGQUIT) {
 427         fflush (stdout);
 428         fprintf (stderr, "\n");
 429         fflush (stderr);
 430     }
 431
 432     done (1);
 433     /* NOTREACHED */
 434 }