mono/metadata/mono-config.c

   1 /*
   2  * mono-config.c
   3  *
   4  * Runtime and assembly configuration file support routines.
   5  *
   6  * Author: Paolo Molaro (lupus@ximian.com)
   7  *
   8  * Copyright 2002-2003 Ximian, Inc (http://www.ximian.com)
   9  * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
  10  */
  11 #include "config.h"
  12 #include <glib.h>
  13 #include <string.h>
  14
  15 #include "mono/metadata/assembly.h"
  16 #include "mono/metadata/loader.h"
  17 #include "mono/metadata/mono-config.h"
  18 #include "mono/metadata/metadata-internals.h"
  19 #include "mono/metadata/object-internals.h"
  20 #include "mono/utils/mono-logger-internal.h"
  21
  22 #if defined(TARGET_PS3)
  23 #define CONFIG_OS "CellOS"
  24 #elif defined(__linux__)
  25 #define CONFIG_OS "linux"
  26 #elif defined(__APPLE__)
  27 #define CONFIG_OS "osx"
  28 #elif defined(sun)
  29 #define CONFIG_OS "solaris"
  30 #elif defined(__FreeBSD__)
  31 #define CONFIG_OS "freebsd"
  32 #elif defined(__NetBSD__)
  33 #define CONFIG_OS "netbsd"
  34 #elif defined(__OpenBSD__)
  35 #define CONFIG_OS "openbsd"
  36 #elif defined(__WIN32__)
  37 #define CONFIG_OS "windows"
  38 #elif defined(_IBMR2)
  39 #define CONFIG_OS "aix"
  40 #elif defined(__hpux)
  41 #define CONFIG_OS "hpux"
  42 #elif defined(__HAIKU__)
  43 #define CONFIG_OS "haiku"
  44 #else
  45 #warning Unknown operating system
  46 #define CONFIG_OS "unknownOS"
  47 #endif
  48
  49 #ifndef CONFIG_CPU
  50 #if defined(__i386__)
  51 #define CONFIG_CPU "x86"
  52 #define CONFIG_WORDSIZE "32"
  53 #elif defined(__x86_64__)
  54 #define CONFIG_CPU "x86-64"
  55 #define CONFIG_WORDSIZE "64"
  56 #elif defined(sparc) || defined(__sparc__)
  57 #define CONFIG_CPU "sparc"
  58 #define CONFIG_WORDSIZE "32"
  59 #elif defined(__ppc64__) || defined(__powerpc64__) || defined(TARGET_POWERPC)
  60 #define CONFIG_WORDSIZE "64"
  61 #ifdef __mono_ppc_ilp32__
  62 #   define CONFIG_CPU "ppc64ilp32"
  63 #else
  64 #   define CONFIG_CPU "ppc64"
  65 #endif
  66 #elif defined(__ppc__) || defined(__powerpc__)
  67 #define CONFIG_CPU "ppc"
  68 #define CONFIG_WORDSIZE "32"
  69 #elif defined(__s390x__)
  70 #define CONFIG_CPU "s390x"
  71 #define CONFIG_WORDSIZE "64"
  72 #elif defined(__s390__)
  73 #define CONFIG_CPU "s390"
  74 #define CONFIG_WORDSIZE "32"
  75 #elif defined(__arm__)
  76 #define CONFIG_CPU "arm"
  77 #define CONFIG_WORDSIZE "32"
  78 #elif defined(__ia64__)
  79 #define CONFIG_CPU "ia64"
  80 #define CONFIG_WORDSIZE "64"
  81 #elif defined(__alpha__)
  82 #define CONFIG_CPU "alpha"
  83 #define CONFIG_WORDSIZE "64"
  84 #elif defined(hppa) || defined(__hppa__)
  85 #define CONFIG_CPU "hppa"
  86 #define CONFIG_WORDSIZE "32"
  87 #elif defined(mips) || defined(__mips) || defined(_mips)
  88 #define CONFIG_CPU "mips"
  89 #define CONFIG_WORDSIZE "32"
  90 #else
  91 #error Unknown CPU
  92 #define CONFIG_CPU "unknownCPU"
  93 #endif
  94 #endif
  95
  96 static void start_element (GMarkupParseContext *context,
  97                            const gchar         *element_name,
  98                            const gchar        **attribute_names,
  99                            const gchar        **attribute_values,
 100                            gpointer             user_data,
 101                            GError             **error);
 102
 103 static void end_element   (GMarkupParseContext *context,
 104                            const gchar         *element_name,
 105                            gpointer             user_data,
 106                            GError             **error);
 107
 108 static void parse_text    (GMarkupParseContext *context,
 109                            const gchar         *text,
 110                            gsize                text_len,
 111                            gpointer             user_data,
 112                            GError             **error);
 113
 114 static void passthrough   (GMarkupParseContext *context,
 115                            const gchar         *text,
 116                            gsize                text_len,
 117                            gpointer             user_data,
 118                            GError             **error);
 119
 120 static void parse_error   (GMarkupParseContext *context,
 121                            GError              *error,
 122                            gpointer             user_data);
 123
 124 static const GMarkupParser
 125 mono_parser = {
 126         start_element,
 127         end_element,
 128         parse_text,
 129         passthrough,
 130         parse_error
 131 };
 132
 133 static GHashTable *config_handlers;
 134
 135 /* when this interface is stable, export it. */
 136 typedef struct MonoParseHandler MonoParseHandler;
 137
 138 struct MonoParseHandler {
 139         const char *element_name;
 140         void*(*init)   (MonoImage *assembly);
 141         void (*start)  (gpointer user_data, const gchar *name,
 142                         const gchar **attributes,
 143                         const gchar **values);
 144         void (*text)   (gpointer user_data, const char *text, gsize test_len);
 145         void (*end)    (gpointer user_data, const char *name);
 146         void (*finish) (gpointer user_data);
 147 };
 148
 149 typedef struct {
 150         MonoAssemblyBindingInfo *info;
 151         void (*info_parsed)(MonoAssemblyBindingInfo *info, void *user_data);
 152         void *user_data;
 153 } ParserUserData;
 154
 155 typedef struct {
 156         MonoParseHandler *current;
 157         void *user_data;
 158         MonoImage *assembly;
 159         int inited;
 160 } ParseState;
 161
 162 static void start_element (GMarkupParseContext *context,
 163                            const gchar         *element_name,
 164                            const gchar        **attribute_names,
 165                            const gchar        **attribute_values,
 166                            gpointer             user_data,
 167                            GError             **error)
 168 {
 169         ParseState *state = user_data;
 170         if (!state->current) {
 171                 state->current = g_hash_table_lookup (config_handlers, element_name);
 172                 if (state->current && state->current->init)
 173                         state->user_data = state->current->init (state->assembly);
 174         }
 175         if (state->current && state->current->start)
 176                 state->current->start (state->user_data, element_name, attribute_names, attribute_values);
 177 }
 178
 179 static void end_element   (GMarkupParseContext *context,
 180                            const gchar         *element_name,
 181                            gpointer             user_data,
 182                            GError             **error)
 183 {
 184         ParseState *state = user_data;
 185         if (state->current) {
 186                 if (state->current->end)
 187                         state->current->end (state->user_data, element_name);
 188                 if (strcmp (state->current->element_name, element_name) == 0) {
 189                         if (state->current->finish)
 190                                 state->current->finish (state->user_data);
 191                         state->current = NULL;
 192                         state->user_data = NULL;
 193                 }
 194         }
 195 }
 196
 197 static void parse_text    (GMarkupParseContext *context,
 198                            const gchar         *text,
 199                            gsize                text_len,
 200                            gpointer             user_data,
 201                            GError             **error)
 202 {
 203         ParseState *state = user_data;
 204         if (state->current && state->current->text)
 205                 state->current->text (state->user_data, text, text_len);
 206 }
 207
 208 static void passthrough   (GMarkupParseContext *context,
 209                            const gchar         *text,
 210                            gsize                text_len,
 211                            gpointer             user_data,
 212                            GError             **error)
 213 {
 214         /* do nothing */
 215 }
 216
 217 static void parse_error   (GMarkupParseContext *context,
 218                            GError              *error,
 219                            gpointer             user_data)
 220 {
 221         ParseState *state = user_data;
 222         const gchar *msg;
 223         const gchar *filename;
 224
 225         filename = state && state->user_data ? (gchar *) state->user_data : "<unknown>";
 226         msg = error && error->message ? error->message : "";
 227         g_warning ("Error parsing %s: %s", filename, msg);
 228 }
 229
 230 static int
 231 arch_matches (const char* arch, const char *value)
 232 {
 233         char **splitted, **p;
 234         int found = FALSE;
 235         if (value [0] == '!')
 236                 return !arch_matches (arch, value + 1);
 237         p = splitted = g_strsplit (value, ",", 0);
 238         while (*p) {
 239                 if (strcmp (arch, *p) == 0) {
 240                         found = TRUE;
 241                         break;
 242                 }
 243                 p++;
 244         }
 245         g_strfreev (splitted);
 246         return found;
 247 }
 248
 249 typedef struct {
 250         char *dll;
 251         char *target;
 252         int ignore;
 253         MonoImage *assembly;
 254 } DllInfo;
 255
 256 static void*
 257 dllmap_init (MonoImage *assembly) {
 258         DllInfo *info = g_new0 (DllInfo, 1);
 259         info->assembly = assembly;
 260         return info;
 261 }
 262
 263 static void
 264 dllmap_start (gpointer user_data,
 265               const gchar         *element_name,
 266               const gchar        **attribute_names,
 267               const gchar        **attribute_values)
 268 {
 269         int i;
 270         DllInfo *info = user_data;
 271
 272         if (strcmp (element_name, "dllmap") == 0) {
 273                 g_free (info->dll);
 274                 g_free (info->target);
 275                 info->dll = info->target = NULL;
 276                 info->ignore = FALSE;
 277                 for (i = 0; attribute_names [i]; ++i) {
 278                         if (strcmp (attribute_names [i], "dll") == 0)
 279                                 info->dll = g_strdup (attribute_values [i]);
 280                         else if (strcmp (attribute_names [i], "target") == 0)
 281                                 info->target = g_strdup (attribute_values [i]);
 282                         else if (strcmp (attribute_names [i], "os") == 0 && !arch_matches (CONFIG_OS, attribute_values [i]))
 283                                 info->ignore = TRUE;
 284                         else if (strcmp (attribute_names [i], "cpu") == 0 && !arch_matches (CONFIG_CPU, attribute_values [i]))
 285                                 info->ignore = TRUE;
 286                         else if (strcmp (attribute_names [i], "wordsize") == 0 && !arch_matches (CONFIG_WORDSIZE, attribute_values [i]))
 287                                 info->ignore = TRUE;
 288                 }
 289                 if (!info->ignore)
 290                         mono_dllmap_insert (info->assembly, info->dll, NULL, info->target, NULL);
 291         } else if (strcmp (element_name, "dllentry") == 0) {
 292                 const char *name = NULL, *target = NULL, *dll = NULL;
 293                 int ignore = FALSE;
 294                 for (i = 0; attribute_names [i]; ++i) {
 295                         if (strcmp (attribute_names [i], "dll") == 0)
 296                                 dll = attribute_values [i];
 297                         else if (strcmp (attribute_names [i], "target") == 0)
 298                                 target = attribute_values [i];
 299                         else if (strcmp (attribute_names [i], "name") == 0)
 300                                 name = attribute_values [i];
 301                         else if (strcmp (attribute_names [i], "os") == 0 && !arch_matches (CONFIG_OS, attribute_values [i]))
 302                                 ignore = TRUE;
 303                         else if (strcmp (attribute_names [i], "cpu") == 0 && !arch_matches (CONFIG_CPU, attribute_values [i]))
 304                                 ignore = TRUE;
 305                         else if (strcmp (attribute_names [i], "wordsize") == 0 && !arch_matches (CONFIG_WORDSIZE, attribute_values [i]))
 306                                 ignore = TRUE;
 307                 }
 308                 if (!dll)
 309                         dll = info->dll;
 310                 if (!info->ignore && !ignore)
 311                         mono_dllmap_insert (info->assembly, info->dll, name, dll, target);
 312         }
 313 }
 314
 315 static void
 316 dllmap_finish (gpointer user_data)
 317 {
 318         DllInfo *info = user_data;
 319
 320         g_free (info->dll);
 321         g_free (info->target);
 322         g_free (info);
 323 }
 324
 325 static const MonoParseHandler
 326 dllmap_handler = {
 327         "dllmap",
 328         dllmap_init,
 329         dllmap_start,
 330         NULL, /* text */
 331         NULL, /* end */
 332         dllmap_finish
 333 };
 334
 335 static void
 336 legacyUEP_start (gpointer user_data,
 337               const gchar         *element_name,
 338               const gchar        **attribute_names,
 339               const gchar        **attribute_values) {
 340         if ((strcmp (element_name, "legacyUnhandledExceptionPolicy") == 0) &&
 341                         (attribute_names [0] != NULL) &&
 342                         (strcmp (attribute_names [0], "enabled") == 0)) {
 343                 if ((strcmp (attribute_values [0], "1") == 0) ||
 344                                 (g_ascii_strcasecmp (attribute_values [0], "true") == 0)) {
 345                         mono_runtime_unhandled_exception_policy_set (MONO_UNHANDLED_POLICY_LEGACY);
 346                 }
 347         }
 348 }
 349
 350 static const MonoParseHandler
 351 legacyUEP_handler = {
 352         "legacyUnhandledExceptionPolicy",
 353         NULL, /* init */
 354         legacyUEP_start,
 355         NULL, /* text */
 356         NULL, /* end */
 357         NULL, /* finish */
 358 };
 359
 360 static int inited = 0;
 361
 362 static void
 363 mono_config_init (void)
 364 {
 365         inited = 1;
 366         config_handlers = g_hash_table_new (g_str_hash, g_str_equal);
 367         g_hash_table_insert (config_handlers, (gpointer) dllmap_handler.element_name, (gpointer) &dllmap_handler);
 368         g_hash_table_insert (config_handlers, (gpointer) legacyUEP_handler.element_name, (gpointer) &legacyUEP_handler);
 369 }
 370
 371 /* FIXME: error handling */
 372
 373 static void
 374 mono_config_parse_xml_with_context (ParseState *state, const char *text, gsize len)
 375 {
 376         GMarkupParseContext *context;
 377
 378         if (!inited)
 379                 mono_config_init ();
 380
 381         context = g_markup_parse_context_new (&mono_parser, 0, state, NULL);
 382         if (g_markup_parse_context_parse (context, text, len, NULL)) {
 383                 g_markup_parse_context_end_parse (context, NULL);
 384         }
 385         g_markup_parse_context_free (context);
 386 }
 387
 388 /* If assembly is NULL, parse in the global context */
 389 static int
 390 mono_config_parse_file_with_context (ParseState *state, const char *filename)
 391 {
 392         gchar *text;
 393         gsize len;
 394         gint offset;
 395
 396         mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_CONFIG,
 397                         "Config attempting to parse: '%s'.", filename);
 398
 399         if (!g_file_get_contents (filename, &text, &len, NULL))
 400                 return 0;
 401
 402
 403         offset = 0;
 404         if (len > 3 && text [0] == '\xef' && text [1] == (gchar) '\xbb' && text [2] == '\xbf')
 405                 offset = 3; /* Skip UTF-8 BOM */
 406         if (state->user_data == NULL)
 407                 state->user_data = (gpointer) filename;
 408         mono_config_parse_xml_with_context (state, text + offset, len - offset);
 409         g_free (text);
 410         return 1;
 411 }
 412
 413 /**
 414  * mono_config_parse_memory:
 415  * @buffer: a pointer to an string XML representation of the configuration
 416  *
 417  * Parses the configuration from a buffer
 418  */
 419 void
 420 mono_config_parse_memory (const char *buffer)
 421 {
 422         ParseState state = {NULL};
 423
 424         state.user_data = (gpointer) "<buffer>";
 425         mono_config_parse_xml_with_context (&state, buffer, strlen (buffer));
 426 }
 427
 428 static void
 429 mono_config_parse_file (const char *filename)
 430 {
 431         ParseState state = {NULL};
 432         state.user_data = (gpointer) filename;
 433         mono_config_parse_file_with_context (&state, filename);
 434 }
 435
 436 /*
 437  * use the equivalent lookup code from the GAC when available.
 438  * Depending on state, this should give something like:
 439  *      aname/version-pubtoken/
 440  *      aname/version/
 441  *      aname
 442  */
 443 static char*
 444 get_assembly_filename (MonoImage *image, int state)
 445 {
 446         switch (state) {
 447         case 0:
 448                 return g_strdup (mono_image_get_name (image));
 449         default:
 450                 return NULL;
 451         }
 452 }
 453
 454 typedef struct _BundledConfig BundledConfig;
 455
 456 struct _BundledConfig {
 457         BundledConfig *next;
 458         const char* aname;
 459         const char* config_xml;
 460 };
 461
 462 static BundledConfig *bundled_configs = NULL;
 463
 464 static const char *bundled_machine_config = NULL;
 465
 466 void
 467 mono_register_config_for_assembly (const char* assembly_name, const char* config_xml)
 468 {
 469         BundledConfig *bconfig;
 470
 471         bconfig = g_new0 (BundledConfig, 1);
 472         bconfig->aname = assembly_name;
 473         bconfig->config_xml = config_xml;
 474         bconfig->next = bundled_configs;
 475         bundled_configs = bconfig;
 476 }
 477
 478 const char *
 479 mono_config_string_for_assembly_file (const char *filename)
 480 {
 481         BundledConfig *bconfig;
 482
 483         for (bconfig = bundled_configs; bconfig; bconfig = bconfig->next) {
 484                 if (bconfig->aname && strcmp (bconfig->aname, filename) == 0)
 485                         return bconfig->config_xml;
 486         }
 487         return NULL;
 488 }
 489
 490 void
 491 mono_config_for_assembly (MonoImage *assembly)
 492 {
 493         ParseState state = {NULL};
 494         int got_it = 0, i;
 495         char *aname, *cfg, *cfg_name;
 496         const char *bundled_config;
 497         const char *home;
 498
 499         state.assembly = assembly;
 500
 501         bundled_config = mono_config_string_for_assembly_file (assembly->module_name);
 502         if (bundled_config) {
 503                 state.user_data = (gpointer) "<bundled>";
 504                 mono_config_parse_xml_with_context (&state, bundled_config, strlen (bundled_config));
 505         }
 506
 507         cfg_name = g_strdup_printf ("%s.config", mono_image_get_filename (assembly));
 508         mono_config_parse_file_with_context (&state, cfg_name);
 509         g_free (cfg_name);
 510
 511         cfg_name = g_strdup_printf ("%s.config", mono_image_get_name (assembly));
 512
 513         home = g_get_home_dir ();
 514
 515         for (i = 0; (aname = get_assembly_filename (assembly, i)) != NULL; ++i) {
 516                 cfg = g_build_filename (mono_get_config_dir (), "mono", "assemblies", aname, cfg_name, NULL);
 517                 got_it += mono_config_parse_file_with_context (&state, cfg);
 518                 g_free (cfg);
 519
 520 #ifdef TARGET_WIN32
 521                 cfg = g_build_filename (home, ".mono", "assemblies", aname, cfg_name, NULL);
 522                 got_it += mono_config_parse_file_with_context (&state, cfg);
 523                 g_free (cfg);
 524 #endif
 525                 g_free (aname);
 526                 if (got_it)
 527                         break;
 528         }
 529         g_free (cfg_name);
 530 }
 531
 532 /**
 533  * mono_config_parse:
 534  * @filename: the filename to load the configuration variables from.
 535  *
 536  * Pass a NULL filename to parse the default config files
 537  * (or the file in the MONO_CONFIG env var).
 538  */
 539 void
 540 mono_config_parse (const char *filename) {
 541         const char *home;
 542         char *mono_cfg;
 543 #ifndef TARGET_WIN32
 544         char *user_cfg;
 545 #endif
 546
 547         if (filename) {
 548                 mono_config_parse_file (filename);
 549                 return;
 550         }
 551
 552         home = g_getenv ("MONO_CONFIG");
 553         if (home) {
 554                 mono_config_parse_file (home);
 555                 return;
 556         }
 557
 558         mono_cfg = g_build_filename (mono_get_config_dir (), "mono", "config", NULL);
 559         mono_config_parse_file (mono_cfg);
 560         g_free (mono_cfg);
 561
 562 #ifndef TARGET_WIN32
 563         home = g_get_home_dir ();
 564         user_cfg = g_strconcat (home, G_DIR_SEPARATOR_S, ".mono/config", NULL);
 565         mono_config_parse_file (user_cfg);
 566         g_free (user_cfg);
 567 #endif
 568 }
 569
 570 static const char *mono_cfg_dir = NULL;
 571
 572 /* Invoked during startup */
 573 void
 574 mono_set_config_dir (const char *dir)
 575 {
 576         /* If this variable is set, overrides the directory computed */
 577         mono_cfg_dir = g_getenv ("MONO_CFG_DIR");
 578         if (mono_cfg_dir == NULL)
 579                 mono_cfg_dir = g_strdup (dir);
 580 }
 581
 582 const char*
 583 mono_get_config_dir (void)
 584 {
 585         if (mono_cfg_dir == NULL)
 586                 mono_set_dirs (NULL, NULL);
 587
 588         return mono_cfg_dir;
 589 }
 590
 591 void
 592 mono_register_machine_config (const char *config_xml)
 593 {
 594         bundled_machine_config = config_xml;
 595 }
 596
 597 const char *
 598 mono_get_machine_config (void)
 599 {
 600         return bundled_machine_config;
 601 }
 602
 603 static void
 604 assembly_binding_end (gpointer user_data, const char *element_name)
 605 {
 606         ParserUserData *pud = user_data;
 607
 608         if (!strcmp (element_name, "dependentAssembly")) {
 609                 if (pud->info_parsed && pud->info) {
 610                         pud->info_parsed (pud->info, pud->user_data);
 611                         g_free (pud->info->name);
 612                         g_free (pud->info->culture);
 613                 }
 614         }
 615 }
 616
 617 static void
 618 publisher_policy_start (gpointer user_data,
 619                 const gchar *element_name,
 620                 const gchar **attribute_names,
 621                 const gchar **attribute_values)
 622 {
 623         ParserUserData *pud;
 624         MonoAssemblyBindingInfo *info;
 625         int n;
 626
 627         pud = user_data;
 628         info = pud->info;
 629         if (!strcmp (element_name, "dependentAssembly")) {
 630                 info->name = NULL;
 631                 info->culture = NULL;
 632                 info->has_old_version_bottom = FALSE;
 633                 info->has_old_version_top = FALSE;
 634                 info->has_new_version = FALSE;
 635                 info->is_valid = FALSE;
 636                 memset (&info->old_version_bottom, 0, sizeof (info->old_version_bottom));
 637                 memset (&info->old_version_top, 0, sizeof (info->old_version_top));
 638                 memset (&info->new_version, 0, sizeof (info->new_version));
 639         } if (!strcmp (element_name, "assemblyIdentity")) {
 640                 for (n = 0; attribute_names [n]; n++) {
 641                         const gchar *attribute_name = attribute_names [n];
 642
 643                         if (!strcmp (attribute_name, "name"))
 644                                 info->name = g_strdup (attribute_values [n]);
 645                         else if (!strcmp (attribute_name, "publicKeyToken")) {
 646                                 if (strlen (attribute_values [n]) == MONO_PUBLIC_KEY_TOKEN_LENGTH - 1)
 647                                         g_strlcpy ((char *) info->public_key_token, attribute_values [n], MONO_PUBLIC_KEY_TOKEN_LENGTH);
 648                         } else if (!strcmp (attribute_name, "culture")) {
 649                                 if (!strcmp (attribute_values [n], "neutral"))
 650                                         info->culture = g_strdup ("");
 651                                 else
 652                                         info->culture = g_strdup (attribute_values [n]);
 653                         }
 654                 }
 655         } else if (!strcmp (element_name, "bindingRedirect")) {
 656                 for (n = 0; attribute_names [n]; n++) {
 657                         const gchar *attribute_name = attribute_names [n];
 658
 659                         if (!strcmp (attribute_name, "oldVersion")) {
 660                                 gchar **numbers, **version, **versions;
 661                                 gint major, minor, build, revision;
 662
 663                                 /* Invalid value */
 664                                 if (!strcmp (attribute_values [n], ""))
 665                                         return;
 666
 667                                 versions = g_strsplit (attribute_values [n], "-", 2);
 668                                 version = g_strsplit (*versions, ".", 4);
 669
 670                                 /* We assign the values to gint vars to do the checks */
 671                                 numbers = version;
 672                                 major = *numbers ? atoi (*numbers++) : -1;
 673                                 minor = *numbers ? atoi (*numbers++) : -1;
 674                                 build = *numbers ? atoi (*numbers++) : -1;
 675                                 revision = *numbers ? atoi (*numbers) : -1;
 676                                 g_strfreev (version);
 677                                 if (major < 0 || minor < 0 || build < 0 || revision < 0) {
 678                                         g_strfreev (versions);
 679                                         return;
 680                                 }
 681
 682                                 info->old_version_bottom.major = major;
 683                                 info->old_version_bottom.minor = minor;
 684                                 info->old_version_bottom.build = build;
 685                                 info->old_version_bottom.revision = revision;
 686                                 info->has_old_version_bottom = TRUE;
 687
 688                                 if (!*(versions + 1)) {
 689                                         g_strfreev (versions);
 690                                         continue;
 691                                 }
 692
 693                                 numbers = version = g_strsplit (*(versions + 1), ".", 4);
 694                                 major = *numbers ? atoi (*numbers++) : -1;
 695                                 minor = *numbers ? atoi (*numbers++) : -1;
 696                                 build = *numbers ? atoi (*numbers++) : -1;
 697                                 revision = *numbers ? atoi (*numbers) : 1;
 698                                 g_strfreev (version);
 699                                 if (major < 0 || minor < 0 || build < 0 || revision < 0) {
 700                                         g_strfreev (versions);
 701                                         return;
 702                                 }
 703
 704                                 info->old_version_top.major = major;
 705                                 info->old_version_top.minor = minor;
 706                                 info->old_version_top.build = build;
 707                                 info->old_version_top.revision = revision;
 708                                 info->has_old_version_top = TRUE;
 709
 710                                 g_strfreev (versions);
 711                         } else if (!strcmp (attribute_name, "newVersion")) {
 712                                 gchar **numbers, **version;
 713
 714                                 /* Invalid value */
 715                                 if (!strcmp (attribute_values [n], ""))
 716                                         return;
 717
 718                                 numbers = version = g_strsplit (attribute_values [n], ".", 4);
 719                                 info->new_version.major = *numbers ? atoi (*numbers++) : -1;
 720                                 info->new_version.minor = *numbers ? atoi (*numbers++) : -1;
 721                                 info->new_version.build = *numbers ? atoi (*numbers++) : -1;
 722                                 info->new_version.revision = *numbers ? atoi (*numbers) : -1;
 723                                 info->has_new_version = TRUE;
 724                                 g_strfreev (version);
 725                         }
 726                 }
 727         }
 728 }
 729
 730 static MonoParseHandler
 731 publisher_policy_parser = {
 732         "", /* We don't need to use declare an xml element */
 733         NULL,
 734         publisher_policy_start,
 735         NULL,
 736         NULL,
 737         NULL
 738 };
 739
 740 void
 741 mono_config_parse_publisher_policy (const gchar *filename, MonoAssemblyBindingInfo *info)
 742 {
 743         ParserUserData user_data = {
 744                 info,
 745                 NULL,
 746                 NULL
 747         };
 748         ParseState state = {
 749                 &publisher_policy_parser, /* MonoParseHandler */
 750                 &user_data, /* user_data */
 751                 NULL, /* MonoImage (we don't need it right now)*/
 752                 TRUE /* We are already inited */
 753         };
 754
 755         mono_config_parse_file_with_context (&state, filename);
 756 }
 757
 758 static MonoParseHandler
 759 config_assemblybinding_parser = {
 760         "", /* We don't need to use declare an xml element */
 761         NULL,
 762         publisher_policy_start,
 763         NULL,
 764         assembly_binding_end,
 765         NULL
 766 };
 767
 768 void
 769 mono_config_parse_assembly_bindings (const char *filename, int amajor, int aminor, void *user_data, void (*infocb)(MonoAssemblyBindingInfo *info, void *user_data))
 770 {
 771         MonoAssemblyBindingInfo info;
 772         ParserUserData pud;
 773         ParseState state;
 774
 775         info.major = amajor;
 776         info.minor = aminor;
 777
 778         pud.info = &info;
 779         pud.info_parsed = infocb;
 780         pud.user_data = user_data;
 781
 782         state.current = &config_assemblybinding_parser;  /* MonoParseHandler */
 783         state.user_data = &pud;
 784         state.assembly = NULL; /* MonoImage (we don't need it right now)*/
 785         state.inited = TRUE; /* We are already inited */
 786
 787         mono_config_parse_file_with_context (&state, filename);
 788 }
 789