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