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