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