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