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/context_find.h"
  10 #include "sbr/readconfig.h"
  11 #include "sbr/ambigsw.h"
  12 #include "sbr/path.h"
  13 #include "sbr/print_version.h"
  14 #include "sbr/print_help.h"
  15 #include "sbr/error.h"
  16 #include <fcntl.h>
  17 #include "h/md5.h"
  18 #include "h/mts.h"
  19 #include "h/tws.h"
  20 #include "h/mime.h"
  21 #include "h/mhparse.h"
  22 #include "h/mhcachesbr.h"
  23 #include "h/done.h"
  24 #include "h/utils.h"
  25 #include "sbr/m_maildir.h"
  26 #include "sbr/m_mktemp.h"
  27 #include "mhfree.h"
  28 #include "mhoutsbr.h"
  29
  30 #define MHBUILD_SWITCHES \
  31     X("auto", 0, AUTOSW) \
  32     X("noauto", 0, NAUTOSW) \
  33     X("check", 0, CHECKSW) \
  34     X("nocheck", 0, NCHECKSW) \
  35     X("directives", 0, DIRECTIVES) \
  36     X("nodirectives", 0, NDIRECTIVES) \
  37     X("headers", 0, HEADSW) \
  38     X("noheaders", 0, NHEADSW) \
  39     X("list", 0, LISTSW) \
  40     X("nolist", 0, NLISTSW) \
  41     X("realsize", 0, SIZESW) \
  42     X("norealsize", 0, NSIZESW) \
  43     X("rfc934mode", 0, RFC934SW) \
  44     X("norfc934mode", 0, NRFC934SW) \
  45     X("verbose", 0, VERBSW) \
  46     X("noverbose", 0, NVERBSW) \
  47     X("disposition", 0, DISPOSW) \
  48     X("nodisposition", 0, NDISPOSW) \
  49     X("rcache policy", 0, RCACHESW) \
  50     X("wcache policy", 0, WCACHESW) \
  51     X("contentid", 0, CONTENTIDSW) \
  52     X("nocontentid", 0, NCONTENTIDSW) \
  53     X("headerencoding encoding-algorithm", 0, HEADERENCSW) \
  54     X("autoheaderencoding", 0, AUTOHEADERENCSW) \
  55     X("maxunencoded", 0, MAXUNENCSW) \
  56     X("version", 0, VERSIONSW) \
  57     X("help", 0, HELPSW) \
  58     X("debug", -5, DEBUGSW) \
  59     X("dist", 0, DISTSW) \
  60
  61 #define X(sw, minchars, id) id,
  62 DEFINE_SWITCH_ENUM(MHBUILD);
  63 #undef X
  64
  65 #define X(sw, minchars, id) { sw, minchars, id },
  66 DEFINE_SWITCH_ARRAY(MHBUILD, switches);
  67 #undef X
  68
  69 /* utf-8 is for Email Address Internationalization, using SMTPUTF8. */
  70 #define MIMEENCODING_SWITCHES \
  71     X("base64", 0, BASE64SW) \
  72     X("quoted-printable", 0, QUOTEDPRINTSW) \
  73     X("utf-8", 0, UTF8SW) \
  74
  75 #define X(sw, minchars, id) id,
  76 DEFINE_SWITCH_ENUM(MIMEENCODING);
  77 #undef X
  78
  79 #define X(sw, minchars, id) { sw, minchars, id },
  80 DEFINE_SWITCH_ARRAY(MIMEENCODING, encodingswitches);
  81 #undef X
  82
  83 int debugsw = 0;
  84
  85 bool listsw;
  86 bool rfc934sw;
  87 bool contentidsw = true;
  88
  89 /*
  90  * Temporary files
  91  */
  92 static char infile[BUFSIZ];
  93 static char outfile[BUFSIZ];
  94
  95
  96 int
  97 main (int argc, char **argv)
  98 {
  99     bool sizesw = true;
 100     bool headsw = true;
 101     bool directives = true;
 102     bool autobuild = false;
 103     bool dist = false;
 104     bool verbosw = false;
 105     bool dispo = false;
 106     size_t maxunencoded = MAXTEXTPERLN;
 107     int *icachesw;
 108     char *cp, buf[BUFSIZ];
 109     char buffer[BUFSIZ], *compfile = NULL;
 110     char **argp, **arguments;
 111     CT ct, cts[2];
 112     FILE *fp = NULL;
 113     FILE *fp_out = NULL;
 114     int header_encoding = CE_UNKNOWN;
 115     size_t n;
 116
 117     if (nmh_init(argv[0], true, false)) { return 1; }
 118
 119     arguments = getarguments (invo_name, argc, argv, 1);
 120     argp = arguments;
 121
 122     while ((cp = *argp++)) {
 123         if (cp[0] == '-' && cp[1] == '\0') {
 124             if (compfile)
 125                 die("cannot specify both standard input and a file");
 126             compfile = cp;
 127             listsw = false;     /* turn off -list if using standard in/out */
 128             verbosw = false;    /* turn off -verbose listings */
 129             break;
 130         }
 131         if (*cp == '-') {
 132             switch (smatch (++cp, switches)) {
 133             case AMBIGSW:
 134                 ambigsw (cp, switches);
 135                 done (1);
 136             case UNKWNSW:
 137                 die("-%s unknown", cp);
 138
 139             case HELPSW:
 140                 snprintf (buf, sizeof(buf), "%s [switches] file", invo_name);
 141                 print_help (buf, switches, 1);
 142                 done (0);
 143             case VERSIONSW:
 144                 print_version(invo_name);
 145                 done (0);
 146
 147             case AUTOSW:
 148                 /* -auto implies -nodirectives */
 149                 autobuild = true;
 150                 directives = false;
 151                 continue;
 152             case NAUTOSW:
 153                 /*
 154                  * We're turning directives back on since this is likely here
 155                  * to override a profile entry
 156                  */
 157                 autobuild = false;
 158                 directives = true;
 159                 continue;
 160
 161             case RCACHESW:
 162                 icachesw = &rcachesw;
 163                 goto do_cache;
 164             case WCACHESW:
 165                 icachesw = &wcachesw;
 166             do_cache: ;
 167                 if (!(cp = *argp++) || *cp == '-')
 168                     die("missing argument to %s", argp[-2]);
 169                 switch (*icachesw = smatch (cp, cache_policy)) {
 170                 case AMBIGSW:
 171                     ambigsw (cp, cache_policy);
 172                     done (1);
 173                 case UNKWNSW:
 174                     die("%s unknown", cp);
 175                 default:
 176                     break;
 177                 }
 178                 continue;
 179
 180             case CHECKSW:
 181                 checksw++;
 182                 continue;
 183             case NCHECKSW:
 184                 checksw = 0;
 185                 continue;
 186
 187             case HEADSW:
 188                 headsw = true;
 189                 continue;
 190             case NHEADSW:
 191                 headsw = false;
 192                 continue;
 193
 194             case DIRECTIVES:
 195                 directives = true;
 196                 continue;
 197             case NDIRECTIVES:
 198                 directives = false;
 199                 continue;
 200
 201             case LISTSW:
 202                 listsw = true;
 203                 continue;
 204             case NLISTSW:
 205                 listsw = false;
 206                 continue;
 207
 208             case RFC934SW:
 209                 rfc934sw = true;
 210                 continue;
 211             case NRFC934SW:
 212                 rfc934sw = false;
 213                 continue;
 214
 215             case SIZESW:
 216                 sizesw = true;
 217                 continue;
 218             case NSIZESW:
 219                 sizesw = false;
 220                 continue;
 221
 222             case CONTENTIDSW:
 223                 contentidsw = true;
 224                 continue;
 225             case NCONTENTIDSW:
 226                 contentidsw = false;
 227                 continue;
 228
 229             case HEADERENCSW: {
 230                 int encoding;
 231
 232                 if (!(cp = *argp++) || *cp == '-')
 233                     die("missing argument to %s", argp[-2]);
 234                 switch (encoding = smatch (cp, encodingswitches)) {
 235                 case AMBIGSW:
 236                     ambigsw (cp, encodingswitches);
 237                     done (1);
 238                 case UNKWNSW:
 239                     die("%s unknown encoding algorithm", cp);
 240                 case BASE64SW:
 241                     header_encoding = CE_BASE64;
 242                     break;
 243                 case QUOTEDPRINTSW:
 244                     header_encoding = CE_QUOTED;
 245                     break;
 246                 case UTF8SW:
 247                     header_encoding = CE_8BIT;
 248                     break;
 249                 default:
 250                     die("Internal error: algorithm %s", cp);
 251                 }
 252                 continue;
 253             }
 254
 255             case AUTOHEADERENCSW:
 256                 header_encoding = CE_UNKNOWN;
 257                 continue;
 258
 259             case MAXUNENCSW:
 260                 if (!(cp = *argp++) || *cp == '-')
 261                     die("missing argument to %s", argp[-2]);
 262                 if ((maxunencoded = atoi(cp)) < 1)
 263                     die("Invalid argument for %s: %s", argp[-2], cp);
 264                 if (maxunencoded > 998)
 265                     die("limit of -maxunencoded is 998");
 266                 continue;
 267
 268             case VERBSW:
 269                 verbosw = true;
 270                 continue;
 271             case NVERBSW:
 272                 verbosw = false;
 273                 continue;
 274             case DISPOSW:
 275                 dispo = true;
 276                 continue;
 277             case NDISPOSW:
 278                 dispo = false;
 279                 continue;
 280             case DEBUGSW:
 281                 debugsw = 1;
 282                 continue;
 283             case DISTSW:
 284                 dist = true;
 285                 continue;
 286             }
 287         }
 288         if (compfile)
 289             die("only one composition file allowed");
 290         compfile = cp;
 291     }
 292
 293     /*
 294      * Check if we've specified an additional profile
 295      */
 296     if ((cp = getenv ("MHBUILD"))) {
 297         if ((fp = fopen (cp, "r"))) {
 298             readconfig(NULL, fp, cp, 0);
 299             fclose (fp);
 300         } else {
 301             admonish ("", "unable to read $MHBUILD profile (%s)", cp);
 302         }
 303     }
 304
 305     /*
 306      * Read the standard profile setup
 307      */
 308     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 309         readconfig(NULL, fp, cp, 0);
 310         fclose (fp);
 311     }
 312
 313     /* Check for public cache location */
 314     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 315         cache_public = NULL;
 316
 317     /* Check for private cache location */
 318     if (!(cache_private = context_find (nmhprivcache)))
 319         cache_private = ".cache";
 320     cache_private = mh_xstrdup(m_maildir(cache_private));
 321
 322     if (!context_find ("path"))
 323         free (path ("./", TFOLDER));
 324
 325     /* Check if we have a file to process */
 326     if (!compfile)
 327         die("need to specify a %s composition file", invo_name);
 328
 329     /*
 330      * Process the composition file from standard input.
 331      */
 332     if (compfile[0] == '-' && compfile[1] == '\0') {
 333         if ((cp = m_mktemp2(NULL, invo_name, NULL, &fp)) == NULL) {
 334             die("unable to create temporary file in %s",
 335                   get_temp_dir());
 336         }
 337         strncpy (infile, cp, sizeof(infile));
 338
 339         /* copy standard input to temporary file */
 340         while ((n = fread(buffer, 1, sizeof(buffer), stdin)) > 0) {
 341             if (fwrite(buffer, 1, n, fp) != n) {
 342                 die("error copying to temporary file");
 343             }
 344         }
 345         fclose (fp);
 346
 347         /* build the content structures for MIME message */
 348         ct = build_mime (infile, autobuild, dist, directives, header_encoding,
 349                          maxunencoded, verbosw);
 350
 351         /*
 352          * If ct == NULL, that means that -auto was set and a MIME version
 353          * header was already seen.  Just use the input file as the output
 354          */
 355
 356         if (!ct) {
 357             if (! (fp = fopen(infile, "r"))) {
 358                 die("Unable to open %s for reading", infile);
 359             }
 360             while ((n = fread(buffer, 1, sizeof(buffer), fp)) > 0) {
 361                 if (fwrite(buffer, 1, n, stdout) != n) {
 362                     die("error copying %s to stdout", infile);
 363                 }
 364             }
 365         } else {
 366             /* output the message */
 367             output_message_fp (ct, stdout, NULL);
 368             free_content (ct);
 369         }
 370
 371         done (0);
 372     }
 373
 374     /*
 375      * Process the composition file from a file.
 376      */
 377
 378     /* build the content structures for MIME message */
 379     ct = build_mime (compfile, autobuild, dist, directives, header_encoding,
 380                      maxunencoded, verbosw);
 381
 382     /*
 383      * If ct == NULL, that means -auto was set and we found a MIME version
 384      * header.  Simply exit and do nothing.
 385      */
 386
 387     if (! ct)
 388         done(0);
 389
 390     cts[0] = ct;
 391     cts[1] = NULL;
 392
 393     /* output MIME message to this temporary file */
 394     if ((cp = m_mktemp2(compfile, invo_name, NULL, &fp_out)) == NULL) {
 395         die("unable to create temporary file");
 396     }
 397     strncpy(outfile, cp, sizeof(outfile));
 398
 399     /* output the message */
 400     output_message_fp (ct, fp_out, outfile);
 401     fclose(fp_out);
 402
 403     /*
 404      * List the message info
 405      */
 406     if (listsw)
 407         list_all_messages (cts, headsw, sizesw, verbosw, debugsw, dispo);
 408
 409     /* Rename composition draft */
 410     snprintf (buffer, sizeof(buffer), "%s.orig", m_backup (compfile));
 411     if (rename (compfile, buffer) == NOTOK) {
 412         adios (compfile, "unable to rename comp draft %s to", buffer);
 413     }
 414
 415     /* Rename output file to take its place */
 416     if (rename (outfile, compfile) == NOTOK) {
 417         advise (outfile, "unable to rename output %s to", compfile);
 418         rename (buffer, compfile);
 419         done (1);
 420     }
 421     /* Remove from atexit(3) list of files to unlink. */
 422     if (!(m_unlink(outfile) == -1 && errno == ENOENT)) {
 423         adios(outfile, "file exists after rename:");
 424     }
 425
 426     free_content (ct);
 427     done (0);
 428     return 1;
 429 }