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