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(__ppc64__) || defined(__powerpc64__)
  51 #define CONFIG_CPU "ppc64"
  52 #elif defined(__ppc__) || defined(__powerpc__)
  53 #define CONFIG_CPU "ppc"
  54 #elif defined(__s390x__)
  55 #define CONFIG_CPU "s390x"
  56 #elif defined(__s390__)
  57 #define CONFIG_CPU "s390"
  58 #elif defined(__arm__)
  59 #define CONFIG_CPU "arm"
  60 #elif defined(__ia64__)
  61 #define CONFIG_CPU "ia64"
  62 #elif defined(__alpha__)
  63 #define CONFIG_CPU "alpha"
  64 #elif defined(hppa) || defined(__hppa__)
  65 #define CONFIG_CPU "hppa"
  66 #elif defined(mips) || defined(__mips) || defined(_mips)
  67 #define CONFIG_CPU "mips"
  68 #else
  69 #warning Unknown CPU
  70 #define CONFIG_CPU "unknownCPU"
  71 #endif
  72
  73 static void start_element (GMarkupParseContext *context,
  74                            const gchar         *element_name,
  75                            const gchar        **attribute_names,
  76                            const gchar        **attribute_values,
  77                            gpointer             user_data,
  78                            GError             **error);
  79
  80 static void end_element   (GMarkupParseContext *context,
  81                            const gchar         *element_name,
  82                            gpointer             user_data,
  83                            GError             **error);
  84
  85 static void parse_text    (GMarkupParseContext *context,
  86                            const gchar         *text,
  87                            gsize                text_len,
  88                            gpointer             user_data,
  89                            GError             **error);
  90
  91 static void passthrough   (GMarkupParseContext *context,
  92                            const gchar         *text,
  93                            gsize                text_len,
  94                            gpointer             user_data,
  95                            GError             **error);
  96
  97 static void parse_error   (GMarkupParseContext *context,
  98                            GError              *error,
  99                            gpointer             user_data);
 100
 101 static const GMarkupParser
 102 mono_parser = {
 103         start_element,
 104         end_element,
 105         parse_text,
 106         passthrough,
 107         parse_error
 108 };
 109
 110 static GHashTable *config_handlers;
 111
 112 /* when this interface is stable, export it. */
 113 typedef struct MonoParseHandler MonoParseHandler;
 114
 115 struct MonoParseHandler {
 116         const char *element_name;
 117         void*(*init)   (MonoImage *assembly);
 118         void (*start)  (gpointer user_data, const gchar *name,
 119                         const gchar **attributes,
 120                         const gchar **values);
 121         void (*text)   (gpointer user_data, const char *text, gsize test_len);
 122         void (*end)    (gpointer user_data, const char *name);
 123         void (*finish) (gpointer user_data);
 124 };
 125
 126 typedef struct {
 127         MonoParseHandler *current;
 128         void *user_data;
 129         MonoImage *assembly;
 130         int inited;
 131 } ParseState;
 132
 133 static void start_element (GMarkupParseContext *context,
 134                            const gchar         *element_name,
 135                            const gchar        **attribute_names,
 136                            const gchar        **attribute_values,
 137                            gpointer             user_data,
 138                            GError             **error)
 139 {
 140         ParseState *state = user_data;
 141         if (!state->current) {
 142                 state->current = g_hash_table_lookup (config_handlers, element_name);
 143                 if (state->current && state->current->init)
 144                         state->user_data = state->current->init (state->assembly);
 145         }
 146         if (state->current && state->current->start)
 147                 state->current->start (state->user_data, element_name, attribute_names, attribute_values);
 148 }
 149
 150 static void end_element   (GMarkupParseContext *context,
 151                            const gchar         *element_name,
 152                            gpointer             user_data,
 153                            GError             **error)
 154 {
 155         ParseState *state = user_data;
 156         if (state->current) {
 157                 if (state->current->end)
 158                         state->current->end (state->user_data, element_name);
 159                 if (strcmp (state->current->element_name, element_name) == 0) {
 160                         if (state->current->finish)
 161                                 state->current->finish (state->user_data);
 162                         state->current = NULL;
 163                         state->user_data = NULL;
 164                 }
 165         }
 166 }
 167
 168 static void parse_text    (GMarkupParseContext *context,
 169                            const gchar         *text,
 170                            gsize                text_len,
 171                            gpointer             user_data,
 172                            GError             **error)
 173 {
 174         ParseState *state = user_data;
 175         if (state->current && state->current->text)
 176                 state->current->text (state->user_data, text, text_len);
 177 }
 178
 179 static void passthrough   (GMarkupParseContext *context,
 180                            const gchar         *text,
 181                            gsize                text_len,
 182                            gpointer             user_data,
 183                            GError             **error)
 184 {
 185         /* do nothing */
 186 }
 187
 188 static void parse_error   (GMarkupParseContext *context,
 189                            GError              *error,
 190                            gpointer             user_data)
 191 {
 192 }
 193
 194 static int
 195 arch_matches (const char* arch, const char *value)
 196 {
 197         char **splitted, **p;
 198         int found = FALSE;
 199         if (value [0] == '!')
 200                 return !arch_matches (arch, value + 1);
 201         p = splitted = g_strsplit (value, ",", 0);
 202         while (*p) {
 203                 if (strcmp (arch, *p) == 0) {
 204                         found = TRUE;
 205                         break;
 206                 }
 207                 p++;
 208         }
 209         g_strfreev (splitted);
 210         return found;
 211 }
 212
 213 typedef struct {
 214         char *dll;
 215         char *target;
 216         int ignore;
 217         MonoImage *assembly;
 218 } DllInfo;
 219
 220 static void*
 221 dllmap_init (MonoImage *assembly) {
 222         DllInfo *info = g_new0 (DllInfo, 1);
 223         info->assembly = assembly;
 224         return info;
 225 }
 226
 227 static void
 228 dllmap_start (gpointer user_data,
 229               const gchar         *element_name,
 230               const gchar        **attribute_names,
 231               const gchar        **attribute_values)
 232 {
 233         int i;
 234         DllInfo *info = user_data;
 235
 236         if (strcmp (element_name, "dllmap") == 0) {
 237                 g_free (info->dll);
 238                 g_free (info->target);
 239                 info->dll = info->target = NULL;
 240                 info->ignore = FALSE;
 241                 for (i = 0; attribute_names [i]; ++i) {
 242                         if (strcmp (attribute_names [i], "dll") == 0)
 243                                 info->dll = g_strdup (attribute_values [i]);
 244                         else if (strcmp (attribute_names [i], "target") == 0)
 245                                 info->target = g_strdup (attribute_values [i]);
 246                         else if (strcmp (attribute_names [i], "os") == 0 && !arch_matches (CONFIG_OS, attribute_values [i]))
 247                                 info->ignore = TRUE;
 248                         else if (strcmp (attribute_names [i], "cpu") == 0 && !arch_matches (CONFIG_CPU, attribute_values [i]))
 249                                 info->ignore = TRUE;
 250                 }
 251                 if (!info->ignore)
 252                         mono_dllmap_insert (info->assembly, info->dll, NULL, info->target, NULL);
 253         } else if (strcmp (element_name, "dllentry") == 0) {
 254                 const char *name = NULL, *target = NULL, *dll = NULL;
 255                 int ignore = FALSE;
 256                 for (i = 0; attribute_names [i]; ++i) {
 257                         if (strcmp (attribute_names [i], "dll") == 0)
 258                                 dll = attribute_values [i];
 259                         else if (strcmp (attribute_names [i], "target") == 0)
 260                                 target = attribute_values [i];
 261                         else if (strcmp (attribute_names [i], "name") == 0)
 262                                 name = attribute_values [i];
 263                         else if (strcmp (attribute_names [i], "os") == 0 && !arch_matches (CONFIG_OS, attribute_values [i]))
 264                                 ignore = TRUE;
 265                         else if (strcmp (attribute_names [i], "cpu") == 0 && !arch_matches (CONFIG_CPU, attribute_values [i]))
 266                                 ignore = TRUE;
 267                 }
 268                 if (!dll)
 269                         dll = info->dll;
 270                 if (!info->ignore && !ignore)
 271                         mono_dllmap_insert (info->assembly, info->dll, name, dll, target);
 272         }
 273 }
 274
 275 static void
 276 dllmap_finish (gpointer user_data)
 277 {
 278         DllInfo *info = user_data;
 279
 280         g_free (info->dll);
 281         g_free (info->target);
 282         g_free (info);
 283 }
 284
 285 static const MonoParseHandler
 286 dllmap_handler = {
 287         "dllmap",
 288         dllmap_init,
 289         dllmap_start,
 290         NULL, /* text */
 291         NULL, /* end */
 292         dllmap_finish
 293 };
 294
 295 static void
 296 legacyUEP_start (gpointer user_data,
 297               const gchar         *element_name,
 298               const gchar        **attribute_names,
 299               const gchar        **attribute_values) {
 300         if ((strcmp (element_name, "legacyUnhandledExceptionPolicy") == 0) &&
 301                         (attribute_names [0] != NULL) &&
 302                         (strcmp (attribute_names [0], "enabled") == 0)) {
 303                 if ((strcmp (attribute_values [0], "1") == 0) ||
 304                                 (g_strcasecmp (attribute_values [0], "true") == 0)) {
 305                         mono_runtime_unhandled_exception_policy_set (MONO_UNHANLED_POLICY_LEGACY);
 306                 }
 307         }
 308 }
 309
 310 static const MonoParseHandler
 311 legacyUEP_handler = {
 312         "legacyUnhandledExceptionPolicy",
 313         NULL, /* init */
 314         legacyUEP_start,
 315         NULL, /* text */
 316         NULL, /* end */
 317         NULL, /* finish */
 318 };
 319
 320 static int inited = 0;
 321
 322 static void
 323 mono_config_init (void)
 324 {
 325         inited = 1;
 326         config_handlers = g_hash_table_new (g_str_hash, g_str_equal);
 327         g_hash_table_insert (config_handlers, (gpointer) dllmap_handler.element_name, (gpointer) &dllmap_handler);
 328         g_hash_table_insert (config_handlers, (gpointer) legacyUEP_handler.element_name, (gpointer) &legacyUEP_handler);
 329 }
 330
 331 /* FIXME: error handling */
 332
 333 static void
 334 mono_config_parse_xml_with_context (ParseState *state, const char *text, gsize len)
 335 {
 336         GMarkupParseContext *context;
 337
 338         if (!inited)
 339                 mono_config_init ();
 340
 341         context = g_markup_parse_context_new (&mono_parser, 0, state, NULL);
 342         if (g_markup_parse_context_parse (context, text, len, NULL)) {
 343                 g_markup_parse_context_end_parse (context, NULL);
 344         }
 345         g_markup_parse_context_free (context);
 346 }
 347
 348 /* If assembly is NULL, parse in the global context */
 349 static int
 350 mono_config_parse_file_with_context (ParseState *state, const char *filename)
 351 {
 352         char *text;
 353         gsize len;
 354
 355         mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_CONFIG,
 356                         "Config attempting to parse: '%s'.", filename);
 357
 358         if (!g_file_get_contents (filename, &text, &len, NULL))
 359                 return 0;
 360         mono_config_parse_xml_with_context (state, text, len);
 361         g_free (text);
 362         return 1;
 363 }
 364
 365 /**
 366  * mono_config_parse_memory:
 367  * @buffer: a pointer to an string XML representation of the configuration
 368  *
 369  * Parses the configuration from a buffer
 370  */
 371 void
 372 mono_config_parse_memory (const char *buffer)
 373 {
 374         ParseState state = {NULL};
 375
 376         mono_config_parse_xml_with_context (&state, buffer, strlen (buffer));
 377 }
 378
 379 static void
 380 mono_config_parse_file (const char *filename)
 381 {
 382         ParseState state = {NULL};
 383         mono_config_parse_file_with_context (&state, filename);
 384 }
 385
 386 /*
 387  * use the equivalent lookup code from the GAC when available.
 388  * Depending on state, this should give something like:
 389  *      aname/version-pubtoken/
 390  *      aname/version/
 391  *      aname
 392  */
 393 static char*
 394 get_assembly_filename (MonoImage *image, int state)
 395 {
 396         switch (state) {
 397         case 0:
 398                 return g_strdup (mono_image_get_name (image));
 399         default:
 400                 return NULL;
 401         }
 402 }
 403
 404 typedef struct _BundledConfig BundledConfig;
 405
 406 struct _BundledConfig {
 407         BundledConfig *next;
 408         const char* aname;
 409         const char* config_xml;
 410 };
 411
 412 static BundledConfig *bundled_configs = NULL;
 413
 414 static const char *bundled_machine_config = NULL;
 415
 416 void
 417 mono_register_config_for_assembly (const char* assembly_name, const char* config_xml)
 418 {
 419         BundledConfig *bconfig;
 420
 421         bconfig = g_new0 (BundledConfig, 1);
 422         bconfig->aname = assembly_name;
 423         bconfig->config_xml = config_xml;
 424         bconfig->next = bundled_configs;
 425         bundled_configs = bconfig;
 426 }
 427
 428 const char *
 429 mono_config_string_for_assembly_file (const char *filename)
 430 {
 431         BundledConfig *bconfig;
 432
 433         for (bconfig = bundled_configs; bconfig; bconfig = bconfig->next) {
 434                 if (bconfig->aname && strcmp (bconfig->aname, filename) == 0)
 435                         return bconfig->config_xml;
 436         }
 437         return NULL;
 438 }
 439
 440 void
 441 mono_config_for_assembly (MonoImage *assembly)
 442 {
 443         ParseState state = {NULL};
 444         int got_it = 0, i;
 445         char *aname, *cfg, *cfg_name;
 446         const char *bundled_config;
 447         const char *home;
 448
 449         state.assembly = assembly;
 450
 451         bundled_config = mono_config_string_for_assembly_file (assembly->module_name);
 452         if (bundled_config)
 453                 mono_config_parse_xml_with_context (&state, bundled_config, strlen (bundled_config));
 454
 455         cfg_name = g_strdup_printf ("%s.config", mono_image_get_filename (assembly));
 456         mono_config_parse_file_with_context (&state, cfg_name);
 457         g_free (cfg_name);
 458
 459         cfg_name = g_strdup_printf ("%s.config", mono_image_get_name (assembly));
 460
 461         home = g_get_home_dir ();
 462
 463         for (i = 0; (aname = get_assembly_filename (assembly, i)) != NULL; ++i) {
 464                 cfg = g_build_filename (mono_get_config_dir (), "mono", "assemblies", aname, cfg_name, NULL);
 465                 got_it += mono_config_parse_file_with_context (&state, cfg);
 466                 g_free (cfg);
 467
 468 #ifndef PLATFORM_WIN32
 469                 cfg = g_build_filename (home, ".mono", "assemblies", aname, cfg_name, NULL);
 470                 got_it += mono_config_parse_file_with_context (&state, cfg);
 471                 g_free (cfg);
 472 #endif
 473                 g_free (aname);
 474                 if (got_it)
 475                         break;
 476         }
 477         g_free (cfg_name);
 478 }
 479
 480 /**
 481  * mono_config_parse:
 482  * @filename: the filename to load the configuration variables from.
 483  *
 484  * Pass a NULL filename to parse the default config files
 485  * (or the file in the MONO_CONFIG env var).
 486  */
 487 void
 488 mono_config_parse (const char *filename) {
 489         const char *home;
 490         char *mono_cfg;
 491 #ifndef PLATFORM_WIN32
 492         char *user_cfg;
 493 #endif
 494
 495         if (filename) {
 496                 mono_config_parse_file (filename);
 497                 return;
 498         }
 499
 500         home = g_getenv ("MONO_CONFIG");
 501         if (home) {
 502                 mono_config_parse_file (home);
 503                 return;
 504         }
 505
 506         mono_cfg = g_build_filename (mono_get_config_dir (), "mono", "config", NULL);
 507         mono_config_parse_file (mono_cfg);
 508         g_free (mono_cfg);
 509
 510 #ifndef PLATFORM_WIN32
 511         home = g_get_home_dir ();
 512         user_cfg = g_strconcat (home, G_DIR_SEPARATOR_S, ".mono/config", NULL);
 513         mono_config_parse_file (user_cfg);
 514         g_free (user_cfg);
 515 #endif
 516 }
 517
 518 static const char *mono_cfg_dir = NULL;
 519
 520 /* Invoked during startup */
 521 void
 522 mono_set_config_dir (const char *dir)
 523 {
 524         /* If this variable is set, overrides the directory computed */
 525         mono_cfg_dir = g_getenv ("MONO_CFG_DIR");
 526         if (mono_cfg_dir == NULL)
 527                 mono_cfg_dir = g_strdup (dir);
 528 }
 529
 530 const char*
 531 mono_get_config_dir (void)
 532 {
 533         if (mono_cfg_dir == NULL)
 534                 mono_set_dirs (NULL, NULL);
 535
 536         return mono_cfg_dir;
 537 }
 538
 539 void
 540 mono_register_machine_config (const char *config_xml)
 541 {
 542         bundled_machine_config = config_xml;
 543 }
 544
 545 const char *
 546 mono_get_machine_config (void)
 547 {
 548         return bundled_machine_config;
 549 }
 550
 551 static void
 552 publisher_policy_start (gpointer user_data,
 553                 const gchar *element_name,
 554                 const gchar **attribute_names,
 555                 const gchar **attribute_values)
 556 {
 557         MonoAssemblyBindingInfo *info;
 558         int n;
 559
 560         info = user_data;
 561         if (!strcmp (element_name, "assemblyIdentity")) {
 562                 for (n = 0; attribute_names [n]; n++) {
 563                         const gchar *attribute_name = attribute_names [n];
 564
 565                         if (!strcmp (attribute_name, "name"))
 566                                 info->name = g_strdup (attribute_values [n]);
 567                         else if (!strcmp (attribute_name, "publicKeyToken")) {
 568                                 if (strlen (attribute_values [n]) == MONO_PUBLIC_KEY_TOKEN_LENGTH - 1)
 569                                         g_strlcpy ((char *) info->public_key_token, attribute_values [n], MONO_PUBLIC_KEY_TOKEN_LENGTH);
 570                         } else if (!strcmp (attribute_name, "culture")) {
 571                                 if (!strcmp (attribute_values [n], "neutral"))
 572                                         info->culture = g_strdup ("");
 573                                 else
 574                                         info->culture = g_strdup (attribute_values [n]);
 575                         }
 576                 }
 577         } else if (!strcmp (element_name, "bindingRedirect")) {
 578                 for (n = 0; attribute_names [n]; n++) {
 579                         const gchar *attribute_name = attribute_names [n];
 580
 581                         if (!strcmp (attribute_name, "oldVersion")) {
 582                                 gchar **numbers, **version, **versions;
 583                                 gint major, minor, build, revision;
 584
 585                                 /* Invalid value */
 586                                 if (!strcmp (attribute_values [n], ""))
 587                                         return;
 588
 589                                 versions = g_strsplit (attribute_values [n], "-", 2);
 590                                 version = g_strsplit (*versions, ".", 4);
 591
 592                                 /* We assign the values to gint vars to do the checks */
 593                                 numbers = version;
 594                                 major = *numbers ? atoi (*numbers++) : -1;
 595                                 minor = *numbers ? atoi (*numbers++) : -1;
 596                                 build = *numbers ? atoi (*numbers++) : -1;
 597                                 revision = *numbers ? atoi (*numbers) : -1;
 598                                 g_strfreev (version);
 599                                 if (major < 0 || minor < 0 || build < 0 || revision < 0) {
 600                                         g_strfreev (versions);
 601                                         return;
 602                                 }
 603
 604                                 info->old_version_bottom.major = major;
 605                                 info->old_version_bottom.minor = minor;
 606                                 info->old_version_bottom.build = build;
 607                                 info->old_version_bottom.revision = revision;
 608                                 info->has_old_version_bottom = TRUE;
 609
 610                                 if (!*(versions + 1)) {
 611                                         g_strfreev (versions);
 612                                         continue;
 613                                 }
 614
 615                                 numbers = version = g_strsplit (*(versions + 1), ".", 4);
 616                                 major = *numbers ? atoi (*numbers++) : -1;
 617                                 minor = *numbers ? atoi (*numbers++) : -1;
 618                                 build = *numbers ? atoi (*numbers++) : -1;
 619                                 revision = *numbers ? atoi (*numbers) : 1;
 620                                 g_strfreev (version);
 621                                 if (major < 0 || minor < 0 || build < 0 || revision < 0) {
 622                                         g_strfreev (versions);
 623                                         return;
 624                                 }
 625
 626                                 info->old_version_top.major = major;
 627                                 info->old_version_top.minor = minor;
 628                                 info->old_version_top.build = build;
 629                                 info->old_version_top.revision = revision;
 630                                 info->has_old_version_top = TRUE;
 631
 632                                 g_strfreev (versions);
 633                         } else if (!strcmp (attribute_name, "newVersion")) {
 634                                 gchar **numbers, **version;
 635
 636                                 /* Invalid value */
 637                                 if (!strcmp (attribute_values [n], ""))
 638                                         return;
 639
 640                                 numbers = version = g_strsplit (attribute_values [n], ".", 4);
 641                                 info->new_version.major = *numbers ? atoi (*numbers++) : -1;
 642                                 info->new_version.minor = *numbers ? atoi (*numbers++) : -1;
 643                                 info->new_version.build = *numbers ? atoi (*numbers++) : -1;
 644                                 info->new_version.revision = *numbers ? atoi (*numbers) : -1;
 645                                 info->has_new_version = TRUE;
 646                                 g_strfreev (version);
 647                         }
 648                 }
 649         }
 650 }
 651
 652 static MonoParseHandler
 653 publisher_policy_parser = {
 654         "", /* We don't need to use declare an xml element */
 655         NULL,
 656         publisher_policy_start,
 657         NULL,
 658         NULL,
 659         NULL
 660 };
 661
 662 void
 663 mono_config_parse_publisher_policy (const gchar *filename, MonoAssemblyBindingInfo *info)
 664 {
 665         ParseState state = {
 666                 &publisher_policy_parser, /* MonoParseHandler */
 667                 info, /* user_data */
 668                 NULL, /* MonoImage (we don't need it right now)*/
 669                 TRUE /* We are already inited */
 670         };
 671
 672         mono_config_parse_file_with_context (&state, filename);
 673 }
 674