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

   1 /* mhbuild.c -- expand/translate MIME composition files
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include "h/mh.h"
   9 #include "sbr/ambigsw.h"
  10 #include "sbr/path.h"
  11 #include "sbr/print_version.h"
  12 #include "sbr/print_help.h"
  13 #include "sbr/error.h"
  14 #include <fcntl.h>
  15 #include "h/md5.h"
  16 #include "h/mts.h"
  17 #include "h/tws.h"
  18 #include "h/mime.h"
  19 #include "h/mhparse.h"
  20 #include "h/mhcachesbr.h"
  21 #include "h/done.h"
  22 #include "h/utils.h"
  23 #include "sbr/m_maildir.h"
  24 #include "sbr/m_mktemp.h"
  25 #include "mhfree.h"
  26 #include "mhoutsbr.h"
  27
  28 #define MHBUILD_SWITCHES \
  29     X("auto", 0, AUTOSW) \
  30     X("noauto", 0, NAUTOSW) \
  31     X("check", 0, CHECKSW) \
  32     X("nocheck", 0, NCHECKSW) \
  33     X("directives", 0, DIRECTIVES) \
  34     X("nodirectives", 0, NDIRECTIVES) \
  35     X("headers", 0, HEADSW) \
  36     X("noheaders", 0, NHEADSW) \
  37     X("list", 0, LISTSW) \
  38     X("nolist", 0, NLISTSW) \
  39     X("realsize", 0, SIZESW) \
  40     X("norealsize", 0, NSIZESW) \
  41     X("rfc934mode", 0, RFC934SW) \
  42     X("norfc934mode", 0, NRFC934SW) \
  43     X("verbose", 0, VERBSW) \
  44     X("noverbose", 0, NVERBSW) \
  45     X("disposition", 0, DISPOSW) \
  46     X("nodisposition", 0, NDISPOSW) \
  47     X("rcache policy", 0, RCACHESW) \
  48     X("wcache policy", 0, WCACHESW) \
  49     X("contentid", 0, CONTENTIDSW) \
  50     X("nocontentid", 0, NCONTENTIDSW) \
  51     X("headerencoding encoding-algorithm", 0, HEADERENCSW) \
  52     X("autoheaderencoding", 0, AUTOHEADERENCSW) \
  53     X("maxunencoded", 0, MAXUNENCSW) \
  54     X("version", 0, VERSIONSW) \
  55     X("help", 0, HELPSW) \
  56     X("debug", -5, DEBUGSW) \
  57     X("dist", 0, DISTSW) \
  58
  59 #define X(sw, minchars, id) id,
  60 DEFINE_SWITCH_ENUM(MHBUILD);
  61 #undef X
  62
  63 #define X(sw, minchars, id) { sw, minchars, id },
  64 DEFINE_SWITCH_ARRAY(MHBUILD, switches);
  65 #undef X
  66
  67 /* utf-8 is for Email Address Internationalization, using SMTPUTF8. */
  68 #define MIMEENCODING_SWITCHES \
  69     X("base64", 0, BASE64SW) \
  70     X("quoted-printable", 0, QUOTEDPRINTSW) \
  71     X("utf-8", 0, UTF8SW) \
  72
  73 #define X(sw, minchars, id) id,
  74 DEFINE_SWITCH_ENUM(MIMEENCODING);
  75 #undef X
  76
  77 #define X(sw, minchars, id) { sw, minchars, id },
  78 DEFINE_SWITCH_ARRAY(MIMEENCODING, encodingswitches);
  79 #undef X
  80
  81 int debugsw = 0;
  82
  83 bool listsw;
  84 bool rfc934sw;
  85 bool contentidsw = true;
  86
  87 /*
  88  * Temporary files
  89  */
  90 static char infile[BUFSIZ];
  91 static char outfile[BUFSIZ];
  92
  93
  94 int
  95 main (int argc, char **argv)
  96 {
  97     bool sizesw = true;
  98     bool headsw = true;
  99     bool directives = true;
 100     bool autobuild = false;
 101     bool dist = false;
 102     bool verbosw = false;
 103     bool dispo = false;
 104     size_t maxunencoded = MAXTEXTPERLN;
 105     int *icachesw;
 106     char *cp, buf[BUFSIZ];
 107     char buffer[BUFSIZ], *compfile = NULL;
 108     char **argp, **arguments;
 109     CT ct, cts[2];
 110     FILE *fp = NULL;
 111     FILE *fp_out = NULL;
 112     int header_encoding = CE_UNKNOWN;
 113     size_t n;
 114
 115     if (nmh_init(argv[0], true, false)) { return 1; }
 116
 117     arguments = getarguments (invo_name, argc, argv, 1);
 118     argp = arguments;
 119
 120     while ((cp = *argp++)) {
 121         if (cp[0] == '-' && cp[1] == '\0') {
 122             if (compfile)
 123                 die("cannot specify both standard input and a file");
 124             compfile = cp;
 125             listsw = false;     /* turn off -list if using standard in/out */
 126             verbosw = false;    /* turn off -verbose listings */
 127             break;
 128         }
 129         if (*cp == '-') {
 130             switch (smatch (++cp, switches)) {
 131             case AMBIGSW:
 132                 ambigsw (cp, switches);
 133                 done (1);
 134             case UNKWNSW:
 135                 die("-%s unknown", cp);
 136
 137             case HELPSW:
 138                 snprintf (buf, sizeof(buf), "%s [switches] file", 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 AUTOSW:
 146                 /* -auto implies -nodirectives */
 147                 autobuild = true;
 148                 directives = false;
 149                 continue;
 150             case NAUTOSW:
 151                 /*
 152                  * We're turning directives back on since this is likely here
 153                  * to override a profile entry
 154                  */
 155                 autobuild = false;
 156                 directives = true;
 157                 continue;
 158
 159             case RCACHESW:
 160                 icachesw = &rcachesw;
 161                 goto do_cache;
 162             case WCACHESW:
 163                 icachesw = &wcachesw;
 164             do_cache: ;
 165                 if (!(cp = *argp++) || *cp == '-')
 166                     die("missing argument to %s", argp[-2]);
 167                 switch (*icachesw = smatch (cp, cache_policy)) {
 168                 case AMBIGSW:
 169                     ambigsw (cp, cache_policy);
 170                     done (1);
 171                 case UNKWNSW:
 172                     die("%s unknown", cp);
 173                 default:
 174                     break;
 175                 }
 176                 continue;
 177
 178             case CHECKSW:
 179                 checksw++;
 180                 continue;
 181             case NCHECKSW:
 182                 checksw = 0;
 183                 continue;
 184
 185             case HEADSW:
 186                 headsw = true;
 187                 continue;
 188             case NHEADSW:
 189                 headsw = false;
 190                 continue;
 191
 192             case DIRECTIVES:
 193                 directives = true;
 194                 continue;
 195             case NDIRECTIVES:
 196                 directives = false;
 197                 continue;
 198
 199             case LISTSW:
 200                 listsw = true;
 201                 continue;
 202             case NLISTSW:
 203                 listsw = false;
 204                 continue;
 205
 206             case RFC934SW:
 207                 rfc934sw = true;
 208                 continue;
 209             case NRFC934SW:
 210                 rfc934sw = false;
 211                 continue;
 212
 213             case SIZESW:
 214                 sizesw = true;
 215                 continue;
 216             case NSIZESW:
 217                 sizesw = false;
 218                 continue;
 219
 220             case CONTENTIDSW:
 221                 contentidsw = true;
 222                 continue;
 223             case NCONTENTIDSW:
 224                 contentidsw = false;
 225                 continue;
 226
 227             case HEADERENCSW: {
 228                 int encoding;
 229
 230                 if (!(cp = *argp++) || *cp == '-')
 231                     die("missing argument to %s", argp[-2]);
 232                 switch (encoding = smatch (cp, encodingswitches)) {
 233                 case AMBIGSW:
 234                     ambigsw (cp, encodingswitches);
 235                     done (1);
 236                 case UNKWNSW:
 237                     die("%s unknown encoding algorithm", cp);
 238                 case BASE64SW:
 239                     header_encoding = CE_BASE64;
 240                     break;
 241                 case QUOTEDPRINTSW:
 242                     header_encoding = CE_QUOTED;
 243                     break;
 244                 case UTF8SW:
 245                     header_encoding = CE_8BIT;
 246                     break;
 247                 default:
 248                     die("Internal error: algorithm %s", cp);
 249                 }
 250                 continue;
 251             }
 252
 253             case AUTOHEADERENCSW:
 254                 header_encoding = CE_UNKNOWN;
 255                 continue;
 256
 257             case MAXUNENCSW:
 258                 if (!(cp = *argp++) || *cp == '-')
 259                     die("missing argument to %s", argp[-2]);
 260                 if ((maxunencoded = atoi(cp)) < 1)
 261                     die("Invalid argument for %s: %s", argp[-2], cp);
 262                 if (maxunencoded > 998)
 263                     die("limit of -maxunencoded is 998");
 264                 continue;
 265
 266             case VERBSW:
 267                 verbosw = true;
 268                 continue;
 269             case NVERBSW:
 270                 verbosw = false;
 271                 continue;
 272             case DISPOSW:
 273                 dispo = true;
 274                 continue;
 275             case NDISPOSW:
 276                 dispo = false;
 277                 continue;
 278             case DEBUGSW:
 279                 debugsw = 1;
 280                 continue;
 281             case DISTSW:
 282                 dist = true;
 283                 continue;
 284             }
 285         }
 286         if (compfile)
 287             die("only one composition file allowed");
 288         compfile = cp;
 289     }
 290
 291     /*
 292      * Check if we've specified an additional profile
 293      */
 294     if ((cp = getenv ("MHBUILD"))) {
 295         if ((fp = fopen (cp, "r"))) {
 296             readconfig(NULL, fp, cp, 0);
 297             fclose (fp);
 298         } else {
 299             admonish ("", "unable to read $MHBUILD profile (%s)", cp);
 300         }
 301     }
 302
 303     /*
 304      * Read the standard profile setup
 305      */
 306     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 307         readconfig(NULL, 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 = mh_xstrdup(m_maildir(cache_private));
 319
 320     if (!context_find ("path"))
 321         free (path ("./", TFOLDER));
 322
 323     /* Check if we have a file to process */
 324     if (!compfile)
 325         die("need to specify a %s composition file", invo_name);
 326
 327     /*
 328      * Process the composition file from standard input.
 329      */
 330     if (compfile[0] == '-' && compfile[1] == '\0') {
 331         if ((cp = m_mktemp2(NULL, invo_name, NULL, &fp)) == NULL) {
 332             die("unable to create temporary file in %s",
 333                   get_temp_dir());
 334         }
 335         strncpy (infile, cp, sizeof(infile));
 336
 337         /* copy standard input to temporary file */
 338         while ((n = fread(buffer, 1, sizeof(buffer), stdin)) > 0) {
 339             if (fwrite(buffer, 1, n, fp) != n) {
 340                 die("error copying to temporary file");
 341             }
 342         }
 343         fclose (fp);
 344
 345         /* build the content structures for MIME message */
 346         ct = build_mime (infile, autobuild, dist, directives, header_encoding,
 347                          maxunencoded, verbosw);
 348
 349         /*
 350          * If ct == NULL, that means that -auto was set and a MIME version
 351          * header was already seen.  Just use the input file as the output
 352          */
 353
 354         if (!ct) {
 355             if (! (fp = fopen(infile, "r"))) {
 356                 die("Unable to open %s for reading", infile);
 357             }
 358             while ((n = fread(buffer, 1, sizeof(buffer), fp)) > 0) {
 359                 if (fwrite(buffer, 1, n, stdout) != n) {
 360                     die("error copying %s to stdout", infile);
 361                 }
 362             }
 363         } else {
 364             /* output the message */
 365             output_message_fp (ct, stdout, NULL);
 366             free_content (ct);
 367         }
 368
 369         done (0);
 370     }
 371
 372     /*
 373      * Process the composition file from a file.
 374      */
 375
 376     /* build the content structures for MIME message */
 377     ct = build_mime (compfile, autobuild, dist, directives, header_encoding,
 378                      maxunencoded, verbosw);
 379
 380     /*
 381      * If ct == NULL, that means -auto was set and we found a MIME version
 382      * header.  Simply exit and do nothing.
 383      */
 384
 385     if (! ct)
 386         done(0);
 387
 388     cts[0] = ct;
 389     cts[1] = NULL;
 390
 391     /* output MIME message to this temporary file */
 392     if ((cp = m_mktemp2(compfile, invo_name, NULL, &fp_out)) == NULL) {
 393         die("unable to create temporary file");
 394     }
 395     strncpy(outfile, cp, sizeof(outfile));
 396
 397     /* output the message */
 398     output_message_fp (ct, fp_out, outfile);
 399     fclose(fp_out);
 400
 401     /*
 402      * List the message info
 403      */
 404     if (listsw)
 405         list_all_messages (cts, headsw, sizesw, verbosw, debugsw, dispo);
 406
 407     /* Rename composition draft */
 408     snprintf (buffer, sizeof(buffer), "%s.orig", m_backup (compfile));
 409     if (rename (compfile, buffer) == NOTOK) {
 410         adios (compfile, "unable to rename comp draft %s to", buffer);
 411     }
 412
 413     /* Rename output file to take its place */
 414     if (rename (outfile, compfile) == NOTOK) {
 415         advise (outfile, "unable to rename output %s to", compfile);
 416         rename (buffer, compfile);
 417         done (1);
 418     }
 419     /* Remove from atexit(3) list of files to unlink. */
 420     if (!(m_unlink(outfile) == -1 && errno == ENOENT)) {
 421         adios(outfile, "file exists after rename:");
 422     }
 423
 424     free_content (ct);
 425     done (0);
 426     return 1;
 427 }