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  * (C) 2002 Ximian, Inc.
   9  */
  10 #include "config.h"
  11 #include <glib.h>
  12 #include <string.h>
  13
  14 #include "mono/metadata/assembly.h"
  15 #include "mono/metadata/loader.h"
  16 #include "mono/metadata/mono-config.h"
  17 #include "mono/metadata/metadata-internals.h"
  18 #include "mono/metadata/object-internals.h"
  19 #include "mono/utils/mono-logger.h"
  20
  21 #if defined(__linux__)
  22 #define CONFIG_OS "linux"
  23 #elif defined(__APPLE__)
  24 #define CONFIG_OS "osx"
  25 #elif defined(sun)
  26 #define CONFIG_OS "solaris"
  27 #elif defined(__FreeBSD__)
  28 #define CONFIG_OS "freebsd"
  29 #elif defined(__NetBSD__)
  30 #define CONFIG_OS "netbsd"
  31 #elif defined(__OpenBSD__)
  32 #define CONFIG_OS "openbsd"
  33 #elif defined(__WIN32__)
  34 #define CONFIG_OS "windows"
  35 #elif defined(_IBMR2)
  36 #define CONFIG_OS "aix"
  37 #elif defined(__hpux)
  38 #define CONFIG_OS "hpux"
  39 #else
  40 #warning Unknown operating system
  41 #define CONFIG_OS "unknownOS"
  42 #endif
  43
  44 #if defined(__i386__)
  45 #define CONFIG_CPU "x86"
  46 #elif defined(__x86_64__)
  47 #define CONFIG_CPU "x86-64"
  48 #elif defined(sparc) || defined(__sparc__)
  49 #define CONFIG_CPU "sparc"
  50 #elif defined(__ppc__) || defined(__powerpc__)
  51 #define CONFIG_CPU "ppc"
  52 #elif defined(__s390x__)
  53 #define CONFIG_CPU "s390x"
  54 #elif defined(__s390__)
  55 #define CONFIG_CPU "s390"
  56 #elif defined(__arm__)
  57 #define CONFIG_CPU "arm"
  58 #elif defined(__ia64__)
  59 #define CONFIG_CPU "ia64"
  60 #elif defined(__alpha__)
  61 #define CONFIG_CPU "alpha"
  62 #elif defined(hppa) || defined(__hppa__)
  63 #define CONFIG_CPU "hppa"
  64 #elif defined(mips) || defined(__mips) || defined(_mips)
  65 #define CONFIG_CPU "mips"
  66 #else
  67 #warning Unknown CPU
  68 #define CONFIG_CPU "unknownCPU"
  69 #endif
  70
  71 static void start_element (GMarkupParseContext *context,
  72                            const gchar         *element_name,
  73                            const gchar        **attribute_names,
  74                            const gchar        **attribute_values,
  75                            gpointer             user_data,
  76                            GError             **error);
  77
  78 static void end_element   (GMarkupParseContext *context,
  79                            const gchar         *element_name,
  80                            gpointer             user_data,
  81                            GError             **error);
  82
  83 static void parse_text    (GMarkupParseContext *context,
  84                            const gchar         *text,
  85                            gsize                text_len,
  86                            gpointer             user_data,
  87                            GError             **error);
  88
  89 static void passthrough   (GMarkupParseContext *context,
  90                            const gchar         *text,
  91                            gsize                text_len,
  92                            gpointer             user_data,
  93                            GError             **error);
  94
  95 static void parse_error   (GMarkupParseContext *context,
  96                            GError              *error,
  97                            gpointer             user_data);
  98
  99 static const GMarkupParser
 100 mono_parser = {
 101         start_element,
 102         end_element,
 103         parse_text,
 104         passthrough,
 105         parse_error
 106 };
 107
 108 static GHashTable *config_handlers;
 109
 110 /* when this interface is stable, export it. */
 111 typedef struct MonoParseHandler MonoParseHandler;
 112
 113 struct MonoParseHandler {
 114         const char *element_name;
 115         void*(*init)   (MonoImage *assembly);
 116         void (*start)  (gpointer user_data, const gchar *name,
 117                         const gchar **attributes,
 118                         const gchar **values);
 119         void (*text)   (gpointer user_data, const char *text, gsize test_len);
 120         void (*end)    (gpointer user_data, const char *name);
 121         void (*finish) (gpointer user_data);
 122 };
 123
 124 typedef struct {
 125         MonoParseHandler *current;
 126         void *user_data;
 127         MonoImage *assembly;
 128         int inited;
 129 } ParseState;
 130
 131 static void start_element (GMarkupParseContext *context,
 132                            const gchar         *element_name,
 133                            const gchar        **attribute_names,
 134                            const gchar        **attribute_values,
 135                            gpointer             user_data,
 136                            GError             **error)
 137 {
 138         ParseState *state = user_data;
 139         if (!state->current) {
 140                 state->current = g_hash_table_lookup (config_handlers, element_name);
 141                 if (state->current && state->current->init)
 142                         state->user_data = state->current->init (state->assembly);
 143         }
 144         if (state->current && state->current->start)
 145                 state->current->start (state->user_data, element_name, attribute_names, attribute_values);
 146 }
 147
 148 static void end_element   (GMarkupParseContext *context,
 149                            const gchar         *element_name,
 150                            gpointer             user_data,
 151                            GError             **error)
 152 {
 153         ParseState *state = user_data;
 154         if (state->current) {
 155                 if (state->current->end)
 156                         state->current->end (state->user_data, element_name);
 157                 if (strcmp (state->current->element_name, element_name) == 0) {
 158                         if (state->current->finish)
 159                                 state->current->finish (state->user_data);
 160                         state->current = NULL;
 161                         state->user_data = NULL;
 162                 }
 163         }
 164 }
 165
 166 static void parse_text    (GMarkupParseContext *context,
 167                            const gchar         *text,
 168                            gsize                text_len,
 169                            gpointer             user_data,
 170                            GError             **error)
 171 {
 172         ParseState *state = user_data;
 173         if (state->current && state->current->text)
 174                 state->current->text (state->user_data, text, text_len);
 175 }
 176
 177 static void passthrough   (GMarkupParseContext *context,
 178                            const gchar         *text,
 179                            gsize                text_len,
 180                            gpointer             user_data,
 181                            GError             **error)
 182 {
 183         /* do nothing */
 184 }
 185
 186 static void parse_error   (GMarkupParseContext *context,
 187                            GError              *error,
 188                            gpointer             user_data)
 189 {
 190 }
 191
 192 static int
 193 arch_matches (const char* arch, const char *value)
 194 {
 195         char **splitted, **p;
 196         int found = FALSE;
 197         if (value [0] == '!')
 198                 return !arch_matches (arch, value + 1);
 199         p = splitted = g_strsplit (value, ",", 0);
 200         while (*p) {
 201                 if (strcmp (arch, *p) == 0) {
 202                         found = TRUE;
 203                         break;
 204                 }
 205                 p++;
 206         }
 207         g_strfreev (splitted);
 208         return found;
 209 }
 210
 211 typedef struct {
 212         char *dll;
 213         char *target;
 214         int ignore;
 215         MonoImage *assembly;
 216 } DllInfo;
 217
 218 static void*
 219 dllmap_init (MonoImage *assembly) {
 220         DllInfo *info = g_new0 (DllInfo, 1);
 221         info->assembly = assembly;
 222         return info;
 223 }
 224
 225 static void
 226 dllmap_start (gpointer user_data,
 227               const gchar         *element_name,
 228               const gchar        **attribute_names,
 229               const gchar        **attribute_values)
 230 {
 231         int i;
 232         DllInfo *info = user_data;
 233
 234         if (strcmp (element_name, "dllmap") == 0) {
 235                 g_free (info->dll);
 236                 g_free (info->target);
 237                 info->dll = info->target = NULL;
 238                 info->ignore = FALSE;
 239                 for (i = 0; attribute_names [i]; ++i) {
 240                         if (strcmp (attribute_names [i], "dll") == 0)
 241                                 info->dll = g_strdup (attribute_values [i]);
 242                         else if (strcmp (attribute_names [i], "target") == 0)
 243                                 info->target = g_strdup (attribute_values [i]);
 244                         else if (strcmp (attribute_names [i], "os") == 0 && !arch_matches (CONFIG_OS, attribute_values [i]))
 245                                 info->ignore = TRUE;
 246                         else if (strcmp (attribute_names [i], "cpu") == 0 && !arch_matches (CONFIG_CPU, attribute_values [i]))
 247                                 info->ignore = TRUE;
 248                 }
 249                 if (!info->ignore)
 250                         mono_dllmap_insert (info->assembly, info->dll, NULL, info->target, NULL);
 251         } else if (strcmp (element_name, "dllentry") == 0) {
 252                 const char *name = NULL, *target = NULL, *dll = NULL;
 253                 int ignore = FALSE;
 254                 for (i = 0; attribute_names [i]; ++i) {
 255                         if (strcmp (attribute_names [i], "dll") == 0)
 256                                 dll = attribute_values [i];
 257                         else if (strcmp (attribute_names [i], "target") == 0)
 258                                 target = attribute_values [i];
 259                         else if (strcmp (attribute_names [i], "name") == 0)
 260                                 name = attribute_values [i];
 261                         else if (strcmp (attribute_names [i], "os") == 0 && !arch_matches (CONFIG_OS, attribute_values [i]))
 262                                 ignore = TRUE;
 263                         else if (strcmp (attribute_names [i], "cpu") == 0 && !arch_matches (CONFIG_CPU, attribute_values [i]))
 264                                 ignore = TRUE;
 265                 }
 266                 if (!dll)
 267                         dll = info->dll;
 268                 if (!info->ignore && !ignore)
 269                         mono_dllmap_insert (info->assembly, info->dll, name, dll, target);
 270         }
 271 }
 272
 273 static void
 274 dllmap_finish (gpointer user_data)
 275 {
 276         DllInfo *info = user_data;
 277
 278         g_free (info->dll);
 279         g_free (info->target);
 280         g_free (info);
 281 }
 282
 283 static const MonoParseHandler
 284 dllmap_handler = {
 285         "dllmap",
 286         dllmap_init,
 287         dllmap_start,
 288         NULL, /* text */
 289         NULL, /* end */
 290         dllmap_finish
 291 };
 292
 293 static void
 294 legacyUEP_start (gpointer user_data,
 295               const gchar         *element_name,
 296               const gchar        **attribute_names,
 297               const gchar        **attribute_values) {
 298         if ((strcmp (element_name, "legacyUnhandledExceptionPolicy") == 0) &&
 299                         (attribute_names [0] != NULL) &&
 300                         (strcmp (attribute_names [0], "enabled") == 0)) {
 301                 if ((strcmp (attribute_values [0], "1") == 0) ||
 302                                 (g_strcasecmp (attribute_values [0], "true") == 0)) {
 303                         mono_runtime_unhandled_exception_policy_set (MONO_UNHANLED_POLICY_LEGACY);
 304                 }
 305         }
 306 }
 307
 308 static const MonoParseHandler
 309 legacyUEP_handler = {
 310         "legacyUnhandledExceptionPolicy",
 311         NULL, /* init */
 312         legacyUEP_start,
 313         NULL, /* text */
 314         NULL, /* end */
 315         NULL, /* finish */
 316 };
 317
 318 static int inited = 0;
 319
 320 static void
 321 mono_config_init (void)
 322 {
 323         inited = 1;
 324         config_handlers = g_hash_table_new (g_str_hash, g_str_equal);
 325         g_hash_table_insert (config_handlers, (gpointer) dllmap_handler.element_name, (gpointer) &dllmap_handler);
 326         g_hash_table_insert (config_handlers, (gpointer) legacyUEP_handler.element_name, (gpointer) &legacyUEP_handler);
 327 }
 328
 329 /* FIXME: error handling */
 330
 331 static void
 332 mono_config_parse_xml_with_context (ParseState *state, const char *text, gsize len)
 333 {
 334         GMarkupParseContext *context;
 335
 336         if (!inited)
 337                 mono_config_init ();
 338
 339         context = g_markup_parse_context_new (&mono_parser, 0, state, NULL);
 340         if (g_markup_parse_context_parse (context, text, len, NULL)) {
 341                 g_markup_parse_context_end_parse (context, NULL);
 342         }
 343         g_markup_parse_context_free (context);
 344 }
 345
 346 /* If assembly is NULL, parse in the global context */
 347 static int
 348 mono_config_parse_file_with_context (ParseState *state, const char *filename)
 349 {
 350         char *text;
 351         gsize len;
 352
 353         mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_CONFIG,
 354                         "Config attempting to parse: '%s'.", filename);
 355
 356         if (!g_file_get_contents (filename, &text, &len, NULL))
 357                 return 0;
 358         mono_config_parse_xml_with_context (state, text, len);
 359         g_free (text);
 360         return 1;
 361 }
 362
 363 /**
 364  * mono_config_parse_memory:
 365  * @buffer: a pointer to an string XML representation of the configuration
 366  *
 367  * Parses the configuration from a buffer
 368  */
 369 void
 370 mono_config_parse_memory (const char *buffer)
 371 {
 372         ParseState state = {NULL};
 373
 374         mono_config_parse_xml_with_context (&state, buffer, strlen (buffer));
 375 }
 376
 377 static void
 378 mono_config_parse_file (const char *filename)
 379 {
 380         ParseState state = {NULL};
 381         mono_config_parse_file_with_context (&state, filename);
 382 }
 383
 384 /*
 385  * use the equivalent lookup code from the GAC when available.
 386  * Depending on state, this should give something like:
 387  *      aname/version-pubtoken/
 388  *      aname/version/
 389  *      aname
 390  */
 391 static char*
 392 get_assembly_filename (MonoImage *image, int state)
 393 {
 394         switch (state) {
 395         case 0:
 396                 return g_strdup (mono_image_get_name (image));
 397         default:
 398                 return NULL;
 399         }
 400 }
 401
 402 typedef struct _BundledConfig BundledConfig;
 403
 404 struct _BundledConfig {
 405         BundledConfig *next;
 406         const char* aname;
 407         const char* config_xml;
 408 };
 409
 410 static BundledConfig *bundled_configs = NULL;
 411
 412 static const char *bundled_machine_config = NULL;
 413
 414 void
 415 mono_register_config_for_assembly (const char* assembly_name, const char* config_xml)
 416 {
 417         BundledConfig *bconfig;
 418
 419         bconfig = g_new0 (BundledConfig, 1);
 420         bconfig->aname = assembly_name;
 421         bconfig->config_xml = config_xml;
 422         bconfig->next = bundled_configs;
 423         bundled_configs = bconfig;
 424 }
 425
 426 const char *
 427 mono_config_string_for_assembly_file (const char *filename)
 428 {
 429         BundledConfig *bconfig;
 430
 431         for (bconfig = bundled_configs; bconfig; bconfig = bconfig->next) {
 432                 if (bconfig->aname && strcmp (bconfig->aname, filename) == 0)
 433                         return bconfig->config_xml;
 434         }
 435         return NULL;
 436 }
 437
 438 void
 439 mono_config_for_assembly (MonoImage *assembly)
 440 {
 441         ParseState state = {NULL};
 442         int got_it = 0, i;
 443         char *aname, *cfg, *cfg_name;
 444         const char *bundled_config;
 445         const char *home;
 446
 447         state.assembly = assembly;
 448
 449         bundled_config = mono_config_string_for_assembly_file (assembly->module_name);
 450         if (bundled_config)
 451                 mono_config_parse_xml_with_context (&state, bundled_config, strlen (bundled_config));
 452
 453         cfg_name = g_strdup_printf ("%s.config", mono_image_get_filename (assembly));
 454         mono_config_parse_file_with_context (&state, cfg_name);
 455         g_free (cfg_name);
 456
 457         cfg_name = g_strdup_printf ("%s.config", mono_image_get_name (assembly));
 458
 459         home = g_get_home_dir ();
 460
 461         for (i = 0; (aname = get_assembly_filename (assembly, i)) != NULL; ++i) {
 462                 cfg = g_build_filename (mono_get_config_dir (), "mono", "assemblies", aname, cfg_name, NULL);
 463                 got_it += mono_config_parse_file_with_context (&state, cfg);
 464                 g_free (cfg);
 465
 466 #ifndef PLATFORM_WIN32
 467                 cfg = g_build_filename (home, ".mono", "assemblies", aname, cfg_name, NULL);
 468                 got_it += mono_config_parse_file_with_context (&state, cfg);
 469                 g_free (cfg);
 470 #endif
 471                 g_free (aname);
 472                 if (got_it)
 473                         break;
 474         }
 475         g_free (cfg_name);
 476 }
 477
 478 /**
 479  * mono_config_parse:
 480  * @filename: the filename to load the configuration variables from.
 481  *
 482  * Pass a NULL filename to parse the default config files
 483  * (or the file in the MONO_CONFIG env var).
 484  */
 485 void
 486 mono_config_parse (const char *filename) {
 487         const char *home;
 488         char *mono_cfg;
 489 #ifndef PLATFORM_WIN32
 490         char *user_cfg;
 491 #endif
 492
 493         if (filename) {
 494                 mono_config_parse_file (filename);
 495                 return;
 496         }
 497
 498         home = g_getenv ("MONO_CONFIG");
 499         if (home) {
 500                 mono_config_parse_file (home);
 501                 return;
 502         }
 503
 504         mono_cfg = g_build_filename (mono_get_config_dir (), "mono", "config", NULL);
 505         mono_config_parse_file (mono_cfg);
 506         g_free (mono_cfg);
 507
 508 #ifndef PLATFORM_WIN32
 509         home = g_get_home_dir ();
 510         user_cfg = g_strconcat (home, G_DIR_SEPARATOR_S, ".mono/config", NULL);
 511         mono_config_parse_file (user_cfg);
 512         g_free (user_cfg);
 513 #endif
 514 }
 515
 516 static const char *mono_cfg_dir = NULL;
 517
 518 /* Invoked during startup */
 519 void
 520 mono_set_config_dir (const char *dir)
 521 {
 522         /* If this variable is set, overrides the directory computed */
 523         mono_cfg_dir = g_getenv ("MONO_CFG_DIR");
 524         if (mono_cfg_dir == NULL)
 525                 mono_cfg_dir = g_strdup (dir);
 526 }
 527
 528 const char*
 529 mono_get_config_dir (void)
 530 {
 531         if (mono_cfg_dir == NULL)
 532                 mono_set_dirs (NULL, NULL);
 533
 534         return mono_cfg_dir;
 535 }
 536
 537 void
 538 mono_register_machine_config (const char *config_xml)
 539 {
 540         bundled_machine_config = config_xml;
 541 }
 542
 543 const char *
 544 mono_get_machine_config (void)
 545 {
 546         return bundled_machine_config;
 547 }
 548
 549 static void
 550 publisher_policy_start (gpointer user_data,
 551                 const gchar *element_name,
 552                 const gchar **attribute_names,
 553                 const gchar **attribute_values)
 554 {
 555         MonoAssemblyBindingInfo *info;
 556         int n;
 557
 558         info = user_data;
 559         if (!strcmp (element_name, "assemblyIdentity")) {
 560                 for (n = 0; attribute_names [n]; n++) {
 561                         const gchar *attribute_name = attribute_names [n];
 562
 563                         if (!strcmp (attribute_name, "name"))
 564                                 info->name = g_strdup (attribute_values [n]);
 565                         else if (!strcmp (attribute_name, "publicKeyToken")) {
 566                                 if (strlen (attribute_values [n]) == MONO_PUBLIC_KEY_TOKEN_LENGTH - 1)
 567                                         g_strlcpy ((char *) info->public_key_token, attribute_values [n], MONO_PUBLIC_KEY_TOKEN_LENGTH);
 568                         } else if (!strcmp (attribute_name, "culture")) {
 569                                 if (!strcmp (attribute_values [n], "neutral"))
 570                                         info->culture = g_strdup ("");
 571                                 else
 572                                         info->culture = g_strdup (attribute_values [n]);
 573                         }
 574                 }
 575         } else if (!strcmp (element_name, "bindingRedirect")) {
 576                 for (n = 0; attribute_names [n]; n++) {
 577                         const gchar *attribute_name = attribute_names [n];
 578
 579                         if (!strcmp (attribute_name, "oldVersion")) {
 580                                 gchar **numbers, **version, **versions;
 581                                 gint major, minor, build, revision;
 582
 583                                 /* Invalid value */
 584                                 if (!strcmp (attribute_values [n], ""))
 585                                         return;
 586
 587                                 versions = g_strsplit (attribute_values [n], "-", 2);
 588                                 version = g_strsplit (*versions, ".", 4);
 589
 590                                 /* We assign the values to gint vars to do the checks */
 591                                 numbers = version;
 592                                 major = *numbers ? atoi (*numbers++) : -1;
 593                                 minor = *numbers ? atoi (*numbers++) : -1;
 594                                 build = *numbers ? atoi (*numbers++) : -1;
 595                                 revision = *numbers ? atoi (*numbers) : -1;
 596                                 g_strfreev (version);
 597                                 if (major < 0 || minor < 0 || build < 0 || revision < 0) {
 598                                         g_strfreev (versions);
 599                                         return;
 600                                 }
 601
 602                                 info->old_version_bottom.major = major;
 603                                 info->old_version_bottom.minor = minor;
 604                                 info->old_version_bottom.build = build;
 605                                 info->old_version_bottom.revision = revision;
 606                                 info->has_old_version_bottom = TRUE;
 607
 608                                 if (!*(versions + 1)) {
 609                                         g_strfreev (versions);
 610                                         continue;
 611                                 }
 612
 613                                 numbers = version = g_strsplit (*(versions + 1), ".", 4);
 614                                 major = *numbers ? atoi (*numbers++) : -1;
 615                                 minor = *numbers ? atoi (*numbers++) : -1;
 616                                 build = *numbers ? atoi (*numbers++) : -1;
 617                                 revision = *numbers ? atoi (*numbers) : 1;
 618                                 g_strfreev (version);
 619                                 if (major < 0 || minor < 0 || build < 0 || revision < 0) {
 620                                         g_strfreev (versions);
 621                                         return;
 622                                 }
 623
 624                                 info->old_version_top.major = major;
 625                                 info->old_version_top.minor = minor;
 626                                 info->old_version_top.build = build;
 627                                 info->old_version_top.revision = revision;
 628                                 info->has_old_version_top = TRUE;
 629
 630                                 g_strfreev (versions);
 631                         } else if (!strcmp (attribute_name, "newVersion")) {
 632                                 gchar **numbers, **version;
 633
 634                                 /* Invalid value */
 635                                 if (!strcmp (attribute_values [n], ""))
 636                                         return;
 637
 638                                 numbers = version = g_strsplit (attribute_values [n], ".", 4);
 639                                 info->new_version.major = *numbers ? atoi (*numbers++) : -1;
 640                                 info->new_version.minor = *numbers ? atoi (*numbers++) : -1;
 641                                 info->new_version.build = *numbers ? atoi (*numbers++) : -1;
 642                                 info->new_version.revision = *numbers ? atoi (*numbers) : -1;
 643                                 info->has_new_version = TRUE;
 644                                 g_strfreev (version);
 645                         }
 646                 }
 647         }
 648 }
 649
 650 static MonoParseHandler
 651 publisher_policy_parser = {
 652         "", /* We don't need to use declare an xml element */
 653         NULL,
 654         publisher_policy_start,
 655         NULL,
 656         NULL,
 657         NULL
 658 };
 659
 660 void
 661 mono_config_parse_publisher_policy (const gchar *filename, MonoAssemblyBindingInfo *info)
 662 {
 663         ParseState state = {
 664                 &publisher_policy_parser, /* MonoParseHandler */
 665                 info, /* user_data */
 666                 NULL, /* MonoImage (we don't need it right now)*/
 667                 TRUE /* We are already inited */
 668         };
 669
 670         mono_config_parse_file_with_context (&state, filename);
 671 }
 672