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