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 <fcntl.h>
  10 #include <h/md5.h>
  11 #include <h/mts.h>
  12 #include <h/tws.h>
  13 #include <h/mime.h>
  14 #include <h/mhparse.h>
  15 #include <h/mhcachesbr.h>
  16 #include <h/utils.h>
  17 #include "sbr/m_maildir.h"
  18 #include "sbr/m_mktemp.h"
  19 #include "mhfree.h"
  20 #include "mhoutsbr.h"
  21
  22 #define MHBUILD_SWITCHES \
  23     X("auto", 0, AUTOSW) \
  24     X("noauto", 0, NAUTOSW) \
  25     X("check", 0, CHECKSW) \
  26     X("nocheck", 0, NCHECKSW) \
  27     X("directives", 0, DIRECTIVES) \
  28     X("nodirectives", 0, NDIRECTIVES) \
  29     X("headers", 0, HEADSW) \
  30     X("noheaders", 0, NHEADSW) \
  31     X("list", 0, LISTSW) \
  32     X("nolist", 0, NLISTSW) \
  33     X("realsize", 0, SIZESW) \
  34     X("norealsize", 0, NSIZESW) \
  35     X("rfc934mode", 0, RFC934SW) \
  36     X("norfc934mode", 0, NRFC934SW) \
  37     X("verbose", 0, VERBSW) \
  38     X("noverbose", 0, NVERBSW) \
  39     X("disposition", 0, DISPOSW) \
  40     X("nodisposition", 0, NDISPOSW) \
  41     X("rcache policy", 0, RCACHESW) \
  42     X("wcache policy", 0, WCACHESW) \
  43     X("contentid", 0, CONTENTIDSW) \
  44     X("nocontentid", 0, NCONTENTIDSW) \
  45     X("headerencoding encoding-algorithm", 0, HEADERENCSW) \
  46     X("autoheaderencoding", 0, AUTOHEADERENCSW) \
  47     X("maxunencoded", 0, MAXUNENCSW) \
  48     X("version", 0, VERSIONSW) \
  49     X("help", 0, HELPSW) \
  50     X("debug", -5, DEBUGSW) \
  51     X("dist", 0, DISTSW) \
  52
  53 #define X(sw, minchars, id) id,
  54 DEFINE_SWITCH_ENUM(MHBUILD);
  55 #undef X
  56
  57 #define X(sw, minchars, id) { sw, minchars, id },
  58 DEFINE_SWITCH_ARRAY(MHBUILD, switches);
  59 #undef X
  60
  61 /* utf-8 is for Email Address Internationalization, using SMTPUTF8. */
  62 #define MIMEENCODING_SWITCHES \
  63     X("base64", 0, BASE64SW) \
  64     X("quoted-printable", 0, QUOTEDPRINTSW) \
  65     X("utf-8", 0, UTF8SW) \
  66
  67 #define X(sw, minchars, id) id,
  68 DEFINE_SWITCH_ENUM(MIMEENCODING);
  69 #undef X
  70
  71 #define X(sw, minchars, id) { sw, minchars, id },
  72 DEFINE_SWITCH_ARRAY(MIMEENCODING, encodingswitches);
  73 #undef X
  74
  75 int debugsw = 0;
  76
  77 int listsw   = 0;
  78 int rfc934sw = 0;
  79 int contentidsw = 1;
  80
  81 /*
  82  * Temporary files
  83  */
  84 static char infile[BUFSIZ];
  85 static int unlink_infile  = 0;
  86
  87 static char outfile[BUFSIZ];
  88 static int unlink_outfile = 0;
  89
  90 static void unlink_done (int) NORETURN;
  91
  92
  93 int
  94 main (int argc, char **argv)
  95 {
  96     int sizesw = 1, headsw = 1, directives = 1, autobuild = 0, dist = 0;
  97     int verbosw = 0, dispo = 0;
  98     size_t maxunencoded = MAXTEXTPERLN;
  99     int *icachesw;
 100     char *cp, buf[BUFSIZ];
 101     char buffer[BUFSIZ], *compfile = NULL;
 102     char **argp, **arguments;
 103     CT ct, cts[2];
 104     FILE *fp = NULL;
 105     FILE *fp_out = NULL;
 106     int header_encoding = CE_UNKNOWN;
 107     size_t n;
 108
 109     if (nmh_init(argv[0], 2)) { return 1; }
 110
 111     done=unlink_done;
 112
 113     arguments = getarguments (invo_name, argc, argv, 1);
 114     argp = arguments;
 115
 116     while ((cp = *argp++)) {
 117         if (cp[0] == '-' && cp[1] == '\0') {
 118             if (compfile)
 119                 adios (NULL, "cannot specify both standard input and a file");
 120             compfile = cp;
 121             listsw = 0;         /* turn off -list if using standard in/out */
 122             verbosw = 0;        /* turn off -verbose listings */
 123             break;
 124         }
 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 [switches] file", invo_name);
 135                 print_help (buf, switches, 1);
 136                 done (0);
 137             case VERSIONSW:
 138                 print_version(invo_name);
 139                 done (0);
 140
 141             case AUTOSW:
 142                 /* -auto implies -nodirectives */
 143                 autobuild = 1;
 144                 directives = 0;
 145                 continue;
 146             case NAUTOSW:
 147                 /*
 148                  * We're turning directives back on since this is likely here
 149                  * to override a profile entry
 150                  */
 151                 autobuild = 0;
 152                 directives = 1;
 153                 continue;
 154
 155             case RCACHESW:
 156                 icachesw = &rcachesw;
 157                 goto do_cache;
 158             case WCACHESW:
 159                 icachesw = &wcachesw;
 160             do_cache: ;
 161                 if (!(cp = *argp++) || *cp == '-')
 162                     adios (NULL, "missing argument to %s", argp[-2]);
 163                 switch (*icachesw = smatch (cp, cache_policy)) {
 164                 case AMBIGSW:
 165                     ambigsw (cp, cache_policy);
 166                     done (1);
 167                 case UNKWNSW:
 168                     adios (NULL, "%s unknown", cp);
 169                 default:
 170                     break;
 171                 }
 172                 continue;
 173
 174             case CHECKSW:
 175                 checksw++;
 176                 continue;
 177             case NCHECKSW:
 178                 checksw = 0;
 179                 continue;
 180
 181             case HEADSW:
 182                 headsw++;
 183                 continue;
 184             case NHEADSW:
 185                 headsw = 0;
 186                 continue;
 187
 188             case DIRECTIVES:
 189                 directives = 1;
 190                 continue;
 191             case NDIRECTIVES:
 192                 directives = 0;
 193                 continue;
 194
 195             case LISTSW:
 196                 listsw++;
 197                 continue;
 198             case NLISTSW:
 199                 listsw = 0;
 200                 continue;
 201
 202             case RFC934SW:
 203                 rfc934sw++;
 204                 continue;
 205             case NRFC934SW:
 206                 rfc934sw = 0;
 207                 continue;
 208
 209             case SIZESW:
 210                 sizesw++;
 211                 continue;
 212             case NSIZESW:
 213                 sizesw = 0;
 214                 continue;
 215
 216             case CONTENTIDSW:
 217                 contentidsw = 1;
 218                 continue;
 219             case NCONTENTIDSW:
 220                 contentidsw = 0;
 221                 continue;
 222
 223             case HEADERENCSW: {
 224                 int encoding;
 225
 226                 if (!(cp = *argp++) || *cp == '-')
 227                     adios (NULL, "missing argument to %s", argp[-2]);
 228                 switch (encoding = smatch (cp, encodingswitches)) {
 229                 case AMBIGSW:
 230                     ambigsw (cp, encodingswitches);
 231                     done (1);
 232                 case UNKWNSW:
 233                     adios (NULL, "%s unknown encoding algorithm", cp);
 234                 case BASE64SW:
 235                     header_encoding = CE_BASE64;
 236                     break;
 237                 case QUOTEDPRINTSW:
 238                     header_encoding = CE_QUOTED;
 239                     break;
 240                 case UTF8SW:
 241                     header_encoding = CE_8BIT;
 242                     break;
 243                 default:
 244                     adios (NULL, "Internal error: algorithm %s", cp);
 245                 }
 246                 continue;
 247             }
 248
 249             case AUTOHEADERENCSW:
 250                 header_encoding = CE_UNKNOWN;
 251                 continue;
 252
 253             case MAXUNENCSW:
 254                 if (!(cp = *argp++) || *cp == '-')
 255                     adios (NULL, "missing argument to %s", argp[-2]);
 256                 if ((maxunencoded = atoi(cp)) < 1)
 257                     adios (NULL, "Invalid argument for %s: %s", argp[-2], cp);
 258                 if (maxunencoded > 998)
 259                     adios (NULL, "limit of -maxunencoded is 998");
 260                 continue;
 261
 262             case VERBSW:
 263                 verbosw++;
 264                 continue;
 265             case NVERBSW:
 266                 verbosw = 0;
 267                 continue;
 268             case DISPOSW:
 269                 dispo = 1;
 270                 continue;
 271             case NDISPOSW:
 272                 dispo = 0;
 273                 continue;
 274             case DEBUGSW:
 275                 debugsw = 1;
 276                 continue;
 277             case DISTSW:
 278                 dist = 1;
 279                 continue;
 280             }
 281         }
 282         if (compfile)
 283             adios (NULL, "only one composition file allowed");
 284         compfile = cp;
 285     }
 286
 287     /*
 288      * Check if we've specified an additional profile
 289      */
 290     if ((cp = getenv ("MHBUILD"))) {
 291         if ((fp = fopen (cp, "r"))) {
 292             readconfig(NULL, fp, cp, 0);
 293             fclose (fp);
 294         } else {
 295             admonish ("", "unable to read $MHBUILD profile (%s)", cp);
 296         }
 297     }
 298
 299     /*
 300      * Read the standard profile setup
 301      */
 302     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 303         readconfig(NULL, fp, cp, 0);
 304         fclose (fp);
 305     }
 306
 307     /* Check for public cache location */
 308     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 309         cache_public = NULL;
 310
 311     /* Check for private cache location */
 312     if (!(cache_private = context_find (nmhprivcache)))
 313         cache_private = ".cache";
 314     cache_private = getcpy (m_maildir (cache_private));
 315
 316     if (!context_find ("path"))
 317         free (path ("./", TFOLDER));
 318
 319     /* Check if we have a file to process */
 320     if (!compfile)
 321         adios (NULL, "need to specify a %s composition file", invo_name);
 322
 323     /*
 324      * Process the composition file from standard input.
 325      */
 326     if (compfile[0] == '-' && compfile[1] == '\0') {
 327         if ((cp = m_mktemp2(NULL, invo_name, NULL, &fp)) == NULL) {
 328             adios(NULL, "unable to create temporary file in %s",
 329                   get_temp_dir());
 330         }
 331
 332         /* save a copy of the name for later removal */
 333         strncpy (infile, cp, sizeof(infile));
 334         unlink_infile = 1;
 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                 adios (NULL, "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                 adios(NULL, "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                     adios(NULL, "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         adios(NULL, "unable to create temporary file in %s", get_temp_dir());
 393     }
 394     strncpy(outfile, cp, sizeof(outfile));
 395     unlink_outfile = 1;
 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     unlink_outfile = 0;
 420
 421     free_content (ct);
 422     done (0);
 423     return 1;
 424 }
 425
 426
 427 static void NORETURN
 428 unlink_done (int status)
 429 {
 430     /*
 431      * Check if we need to remove stray
 432      * temporary files.
 433      */
 434     if (unlink_infile)
 435         (void) m_unlink (infile);
 436     if (unlink_outfile)
 437         (void) m_unlink (outfile);
 438
 439     exit (status);
 440 }