2 * assembly.c: Routines for loading assemblies.
5 * Miguel de Icaza (miguel@ximian.com)
7 * (C) 2001 Ximian, Inc. http://www.ximian.com
19 #include "rawbuffer.h"
20 #include <mono/metadata/loader.h>
21 #include <mono/metadata/tabledefs.h>
22 #include <mono/metadata/metadata-internals.h>
23 #include <mono/metadata/class-internals.h>
24 #include <mono/metadata/domain-internals.h>
25 #include <mono/metadata/mono-endian.h>
26 #include <mono/io-layer/io-layer.h>
27 #include <mono/utils/mono-uri.h>
28 #include <mono/metadata/mono-config.h>
29 #include <mono/utils/mono-digest.h>
30 #include <mono/utils/mono-logger.h>
31 #include <mono/metadata/reflection.h>
33 #ifndef PLATFORM_WIN32
34 #include <sys/types.h>
39 /* AssemblyVersionMap: an assembly name and the assembly version set on which it is based */
41 const char* assembly_name;
42 guint8 version_set_index;
45 /* the default search path is empty, the first slot is replaced with the computed value */
52 /* Contains the list of directories to be searched for assemblies (MONO_PATH) */
53 static char **assemblies_path = NULL;
55 /* Contains the list of directories that point to auxiliary GACs */
56 static char **extra_gac_paths = NULL;
58 /* The list of system assemblies what will be remapped to the running
59 * runtime version. WARNING: this list must be sorted.
61 static const AssemblyVersionMap framework_assemblies [] = {
63 {"Commons.Xml.Relaxng", 0},
70 {"Microsoft.VisualBasic", 1},
71 {"Microsoft.VisualC", 1},
73 {"Mono.CompilerServices.SymbolWriter", 0},
75 {"Mono.Data.SybaseClient", 0},
77 {"Mono.Data.TdsClient", 0},
78 {"Mono.GetOptions", 0},
82 {"Mono.Security.Win32", 0},
84 {"Novell.Directory.Ldap", 0},
88 {"System.Configuration.Install", 0},
90 {"System.Data.OracleClient", 0},
91 {"System.Data.SqlXml", 0},
93 {"System.DirectoryServices", 0},
94 {"System.Drawing", 0},
95 {"System.Drawing.Design", 0},
96 {"System.EnterpriseServices", 0},
97 {"System.Management", 0},
98 {"System.Messaging", 0},
99 {"System.Runtime.Remoting", 0},
100 {"System.Runtime.Serialization.Formatters.Soap", 0},
101 {"System.Security", 0},
102 {"System.ServiceProcess", 0},
104 {"System.Web.Mobile", 0},
105 {"System.Web.Services", 0},
106 {"System.Windows.Forms", 0},
112 * keeps track of loaded assemblies
114 static GList *loaded_assemblies = NULL;
115 static MonoAssembly *corlib;
117 /* This protects loaded_assemblies and image->references */
118 #define mono_assemblies_lock() EnterCriticalSection (&assemblies_mutex)
119 #define mono_assemblies_unlock() LeaveCriticalSection (&assemblies_mutex)
120 static CRITICAL_SECTION assemblies_mutex;
122 /* A hastable of thread->assembly list mappings */
123 static GHashTable *assemblies_loading;
125 /* A hashtable of reflection only load thread->assemblies mappings */
126 static GHashTable *assemblies_refonly_loading;
128 /* If defined, points to the bundled assembly information */
129 const MonoBundledAssembly **bundles;
131 /* Loaded assembly binding info */
132 static GSList *loaded_assembly_bindings = NULL;
135 mono_assembly_invoke_search_hook_internal (MonoAssemblyName *aname, gboolean refonly, gboolean postload);
138 encode_public_tok (const guchar *token, gint32 len)
140 const static gchar allowed [] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
144 res = g_malloc (len * 2 + 1);
145 for (i = 0; i < len; i++) {
146 res [i * 2] = allowed [token [i] >> 4];
147 res [i * 2 + 1] = allowed [token [i] & 0xF];
154 check_path_env (void)
157 char **splitted, **dest;
159 path = g_getenv ("MONO_PATH");
163 splitted = g_strsplit (path, G_SEARCHPATH_SEPARATOR_S, 1000);
165 g_strfreev (assemblies_path);
166 assemblies_path = dest = splitted;
174 if (g_getenv ("MONO_DEBUG") == NULL)
178 if (**splitted && !g_file_test (*splitted, G_FILE_TEST_IS_DIR))
179 g_warning ("'%s' in MONO_PATH doesn't exist or has wrong permissions.", *splitted);
186 check_extra_gac_path_env (void) {
188 char **splitted, **dest;
190 path = g_getenv ("MONO_GAC_PREFIX");
194 splitted = g_strsplit (path, G_SEARCHPATH_SEPARATOR_S, 1000);
196 g_strfreev (extra_gac_paths);
197 extra_gac_paths = dest = splitted;
205 if (g_getenv ("MONO_DEBUG") == NULL)
209 if (**splitted && !g_file_test (*splitted, G_FILE_TEST_IS_DIR))
210 g_warning ("'%s' in MONO_GAC_PATH doesn't exist or has wrong permissions.", *splitted);
217 assembly_binding_maps_name (MonoAssemblyBindingInfo *info, MonoAssemblyName *aname)
219 if (strcmp (info->name, aname->name))
222 if (info->major != aname->major || info->minor != aname->minor)
225 if ((info->culture != NULL) != (aname->culture != NULL))
228 if (info->culture && strcmp (info->culture, aname->culture))
231 if (strcmp ((const char *)info->public_key_token, (const char *)aname->public_key_token))
238 mono_assembly_binding_info_free (MonoAssemblyBindingInfo *info)
241 g_free (info->culture);
245 get_publisher_policy_info (MonoImage *image, MonoAssemblyName *aname, MonoAssemblyBindingInfo *binding_info)
248 guint32 cols [MONO_MANIFEST_SIZE];
249 const gchar *filename;
250 gchar *subpath, *fullpath;
252 t = &image->tables [MONO_TABLE_MANIFESTRESOURCE];
253 /* MS Impl. accepts policy assemblies with more than
254 * one manifest resource, and only takes the first one */
256 binding_info->is_valid = FALSE;
260 mono_metadata_decode_row (t, 0, cols, MONO_MANIFEST_SIZE);
261 if ((cols [MONO_MANIFEST_IMPLEMENTATION] & MONO_IMPLEMENTATION_MASK) != MONO_IMPLEMENTATION_FILE) {
262 binding_info->is_valid = FALSE;
266 filename = mono_metadata_string_heap (image, cols [MONO_MANIFEST_NAME]);
267 g_assert (filename != NULL);
269 subpath = g_path_get_dirname (image->name);
270 fullpath = g_build_path (G_DIR_SEPARATOR_S, subpath, filename, NULL);
271 mono_config_parse_publisher_policy (fullpath, binding_info);
275 /* Define the optional elements/attributes before checking */
276 if (!binding_info->culture)
277 binding_info->culture = g_strdup ("");
279 /* Check that the most important elements/attributes exist */
280 if (!binding_info->name || !binding_info->public_key_token [0] || !binding_info->has_old_version_bottom ||
281 !binding_info->has_new_version || !assembly_binding_maps_name (binding_info, aname)) {
282 mono_assembly_binding_info_free (binding_info);
283 binding_info->is_valid = FALSE;
287 binding_info->is_valid = TRUE;
291 compare_versions (AssemblyVersionSet *v, MonoAssemblyName *aname)
293 if (v->major > aname->major)
295 else if (v->major < aname->major)
298 if (v->minor > aname->minor)
300 else if (v->minor < aname->minor)
303 if (v->build > aname->build)
305 else if (v->build < aname->build)
308 if (v->revision > aname->revision)
310 else if (v->revision < aname->revision)
317 check_policy_versions (MonoAssemblyBindingInfo *info, MonoAssemblyName *name)
322 /* If has_old_version_top doesn't exist, we don't have an interval */
323 if (!info->has_old_version_top) {
324 if (compare_versions (&info->old_version_bottom, name) == 0)
330 /* Check that the version defined by name is valid for the interval */
331 if (compare_versions (&info->old_version_top, name) < 0)
334 /* We should be greater or equal than the small version */
335 if (compare_versions (&info->old_version_bottom, name) > 0)
342 * mono_assembly_names_equal:
344 * @r: second assembly.
346 * Compares two MonoAssemblyNames and returns whether they are equal.
348 * This compares the names, the cultures, the release version and their
351 * Returns: TRUE if both assembly names are equal.
354 mono_assembly_names_equal (MonoAssemblyName *l, MonoAssemblyName *r)
356 if (!l->name || !r->name)
359 if (strcmp (l->name, r->name))
362 if (l->culture && r->culture && strcmp (l->culture, r->culture))
365 if (l->major != r->major || l->minor != r->minor ||
366 l->build != r->build || l->revision != r->revision)
367 if (! ((l->major == 0 && l->minor == 0 && l->build == 0 && l->revision == 0) || (r->major == 0 && r->minor == 0 && r->build == 0 && r->revision == 0)))
370 if (!l->public_key_token [0] || !r->public_key_token [0])
373 if (strcmp ((char*)l->public_key_token, (char*)r->public_key_token))
380 search_loaded (MonoAssemblyName* aname, gboolean refonly)
386 ass = mono_assembly_invoke_search_hook_internal (aname, refonly, FALSE);
391 * The assembly might be under load by this thread. In this case, it is
392 * safe to return an incomplete instance to prevent loops.
394 loading = g_hash_table_lookup (refonly ? assemblies_refonly_loading : assemblies_loading, (gpointer)GetCurrentThreadId ());
395 for (tmp = loading; tmp; tmp = tmp->next) {
397 if (!mono_assembly_names_equal (aname, &ass->aname))
406 static MonoAssembly *
407 load_in_path (const char *basename, const char** search_path, MonoImageOpenStatus *status, MonoBoolean refonly)
411 MonoAssembly *result;
413 for (i = 0; search_path [i]; ++i) {
414 fullpath = g_build_filename (search_path [i], basename, NULL);
415 result = mono_assembly_open_full (fullpath, status, refonly);
424 * mono_assembly_setrootdir:
425 * @root_dir: The pathname of the root directory where we will locate assemblies
427 * This routine sets the internal default root directory for looking up
430 * This is used by Windows installations to compute dynamically the
431 * place where the Mono assemblies are located.
435 mono_assembly_setrootdir (const char *root_dir)
438 * Override the MONO_ASSEMBLIES directory configured at compile time.
440 /* Leak if called more than once */
441 default_path [0] = g_strdup (root_dir);
445 * mono_assembly_getrootdir:
447 * Obtains the root directory used for looking up assemblies.
449 * Returns: a string with the directory, this string should not be freed.
451 G_CONST_RETURN gchar *
452 mono_assembly_getrootdir (void)
454 return default_path [0];
459 * @assembly_dir: the base directory for assemblies
460 * @config_dir: the base directory for configuration files
462 * This routine is used internally and by developers embedding
463 * the runtime into their own applications.
465 * There are a number of cases to consider: Mono as a system-installed
466 * package that is available on the location preconfigured or Mono in
467 * a relocated location.
469 * If you are using a system-installed Mono, you can pass NULL
470 * to both parameters. If you are not, you should compute both
471 * directory values and call this routine.
473 * The values for a given PREFIX are:
475 * assembly_dir: PREFIX/lib
476 * config_dir: PREFIX/etc
478 * Notice that embedders that use Mono in a relocated way must
479 * compute the location at runtime, as they will be in control
480 * of where Mono is installed.
483 mono_set_dirs (const char *assembly_dir, const char *config_dir)
485 #if defined (MONO_ASSEMBLIES)
486 if (assembly_dir == NULL)
487 assembly_dir = MONO_ASSEMBLIES;
489 #if defined (MONO_CFG_DIR)
490 if (config_dir == NULL)
491 config_dir = MONO_CFG_DIR;
493 mono_assembly_setrootdir (assembly_dir);
494 mono_set_config_dir (config_dir);
497 #ifndef PLATFORM_WIN32
500 compute_base (char *path)
502 char *p = rindex (path, '/');
506 /* Not a well known Mono executable, we are embedded, cant guess the base */
507 if (strcmp (p, "/mono") && strcmp (p, "/monodis") && strcmp (p, "/mint") && strcmp (p, "/monodiet"))
511 p = rindex (path, '/');
515 if (strcmp (p, "/bin") != 0)
524 mono_set_dirs (MONO_ASSEMBLIES, MONO_CFG_DIR);
531 char *config, *lib, *mono;
535 * Only /usr prefix is treated specially
537 if (strncmp (exe, MONO_BINDIR, strlen (MONO_BINDIR)) == 0 || (base = compute_base (exe)) == NULL){
542 config = g_build_filename (base, "etc", NULL);
543 lib = g_build_filename (base, "lib", NULL);
544 mono = g_build_filename (lib, "mono/1.0", NULL);
545 if (stat (mono, &buf) == -1)
548 mono_set_dirs (lib, config);
556 #endif /* PLATFORM_WIN32 */
559 #undef GetModuleFileName
560 #define GetModuleFileName ceGetModuleFileNameA
562 DWORD ceGetModuleFileNameA(HMODULE hModule, char* lpFilename, DWORD nSize)
565 wchar_t* wbuff = (wchar_t*)LocalAlloc(LPTR, nSize*2);
566 res = GetModuleFileNameW(hModule, wbuff, nSize);
568 int len = wcslen(wbuff);
569 WideCharToMultiByte(CP_ACP, 0, wbuff, len, lpFilename, len, NULL, NULL);
579 * Registers the root directory for the Mono runtime, for Linux and Solaris 10,
580 * this auto-detects the prefix where Mono was installed.
583 mono_set_rootdir (void)
585 #ifdef PLATFORM_WIN32
586 gunichar2 moddir [MAXPATHLEN];
587 gchar *bindir, *installdir, *root, *utf8name, *config;
589 GetModuleFileNameW (NULL, moddir, MAXPATHLEN);
590 utf8name = g_utf16_to_utf8 (moddir, -1, NULL, NULL, NULL);
591 bindir = g_path_get_dirname (utf8name);
592 installdir = g_path_get_dirname (bindir);
593 root = g_build_path (G_DIR_SEPARATOR_S, installdir, "lib", NULL);
595 config = g_build_filename (root, "..", "etc", NULL);
596 mono_set_dirs (root, config);
609 s = readlink ("/proc/self/exe", buf, sizeof (buf)-1);
617 /* Solaris 10 style */
618 str = g_strdup_printf ("/proc/%d/path/a.out", getpid ());
619 s = readlink (str, buf, sizeof (buf)-1);
631 * mono_assemblies_init:
633 * Initialize global variables used by this module.
636 mono_assemblies_init (void)
639 * Initialize our internal paths if we have not been initialized yet.
640 * This happens when embedders use Mono.
642 if (mono_assembly_getrootdir () == NULL)
646 check_extra_gac_path_env ();
648 InitializeCriticalSection (&assemblies_mutex);
650 assemblies_loading = g_hash_table_new (NULL, NULL);
651 assemblies_refonly_loading = g_hash_table_new (NULL, NULL);
655 mono_assembly_fill_assembly_name (MonoImage *image, MonoAssemblyName *aname)
657 MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLY];
658 guint32 cols [MONO_ASSEMBLY_SIZE];
663 mono_metadata_decode_row (t, 0, cols, MONO_ASSEMBLY_SIZE);
666 aname->hash_value = NULL;
667 aname->name = mono_metadata_string_heap (image, cols [MONO_ASSEMBLY_NAME]);
668 aname->culture = mono_metadata_string_heap (image, cols [MONO_ASSEMBLY_CULTURE]);
669 aname->flags = cols [MONO_ASSEMBLY_FLAGS];
670 aname->major = cols [MONO_ASSEMBLY_MAJOR_VERSION];
671 aname->minor = cols [MONO_ASSEMBLY_MINOR_VERSION];
672 aname->build = cols [MONO_ASSEMBLY_BUILD_NUMBER];
673 aname->revision = cols [MONO_ASSEMBLY_REV_NUMBER];
674 aname->hash_alg = cols [MONO_ASSEMBLY_HASH_ALG];
675 if (cols [MONO_ASSEMBLY_PUBLIC_KEY]) {
676 guchar* token = g_malloc (8);
681 pkey = mono_metadata_blob_heap (image, cols [MONO_ASSEMBLY_PUBLIC_KEY]);
682 len = mono_metadata_decode_blob_size (pkey, &pkey);
683 aname->public_key = (guchar*)pkey;
685 mono_digest_get_public_token (token, aname->public_key, len);
686 encoded = encode_public_tok (token, 8);
687 g_strlcpy ((char*)aname->public_key_token, encoded, MONO_PUBLIC_KEY_TOKEN_LENGTH);
693 aname->public_key = NULL;
694 memset (aname->public_key_token, 0, MONO_PUBLIC_KEY_TOKEN_LENGTH);
697 if (cols [MONO_ASSEMBLY_PUBLIC_KEY]) {
698 aname->public_key = (guchar*)mono_metadata_blob_heap (image, cols [MONO_ASSEMBLY_PUBLIC_KEY]);
701 aname->public_key = 0;
707 * mono_stringify_assembly_name:
708 * @aname: the assembly name.
710 * Convert @aname into its string format. The returned string is dynamically
711 * allocated and should be freed by the caller.
713 * Returns: a newly allocated string with a string representation of
717 mono_stringify_assembly_name (MonoAssemblyName *aname)
719 return g_strdup_printf (
720 "%s, Version=%d.%d.%d.%d, Culture=%s%s%s",
722 aname->major, aname->minor, aname->build, aname->revision,
723 aname->culture && *aname->culture? aname->culture: "neutral",
724 aname->public_key_token [0] ? ", PublicKeyToken=" : "",
725 aname->public_key_token [0] ? (char *)aname->public_key_token : "");
729 assemblyref_public_tok (MonoImage *image, guint32 key_index, guint32 flags)
731 const gchar *public_tok;
734 public_tok = mono_metadata_blob_heap (image, key_index);
735 len = mono_metadata_decode_blob_size (public_tok, &public_tok);
737 if (flags & ASSEMBLYREF_FULL_PUBLIC_KEY_FLAG) {
739 mono_digest_get_public_token (token, (guchar*)public_tok, len);
740 return encode_public_tok (token, 8);
743 return encode_public_tok ((guchar*)public_tok, len);
747 * mono_assembly_addref:
748 * @assemnly: the assembly to reference
750 * This routine increments the reference count on a MonoAssembly.
751 * The reference count is reduced every time the method mono_assembly_close() is
755 mono_assembly_addref (MonoAssembly *assembly)
757 InterlockedIncrement (&assembly->ref_count);
760 static MonoAssemblyName *
761 mono_assembly_remap_version (MonoAssemblyName *aname, MonoAssemblyName *dest_aname)
763 const MonoRuntimeInfo *current_runtime;
764 int pos, first, last;
766 if (aname->name == NULL) return aname;
767 current_runtime = mono_get_runtime_info ();
770 last = G_N_ELEMENTS (framework_assemblies) - 1;
772 while (first <= last) {
774 pos = first + (last - first) / 2;
775 res = strcmp (aname->name, framework_assemblies[pos].assembly_name);
777 const AssemblyVersionSet* vset;
778 int index = framework_assemblies[pos].version_set_index;
779 g_assert (index < G_N_ELEMENTS (current_runtime->version_sets));
780 vset = ¤t_runtime->version_sets [index];
782 if (aname->major == vset->major && aname->minor == vset->minor &&
783 aname->build == vset->build && aname->revision == vset->revision)
786 if ((aname->major | aname->minor | aname->build | aname->revision) != 0)
787 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_ASSEMBLY,
788 "The request to load the assembly %s v%d.%d.%d.%d was remapped to v%d.%d.%d.%d",
790 aname->major, aname->minor, aname->build, aname->revision,
791 vset->major, vset->minor, vset->build, vset->revision
794 memcpy (dest_aname, aname, sizeof(MonoAssemblyName));
795 dest_aname->major = vset->major;
796 dest_aname->minor = vset->minor;
797 dest_aname->build = vset->build;
798 dest_aname->revision = vset->revision;
800 } else if (res < 0) {
810 * mono_assembly_get_assemblyref:
812 * Fill out ANAME with the assembly name of the INDEXth assembly reference in IMAGE.
815 mono_assembly_get_assemblyref (MonoImage *image, int index, MonoAssemblyName *aname)
818 guint32 cols [MONO_ASSEMBLYREF_SIZE];
821 t = &image->tables [MONO_TABLE_ASSEMBLYREF];
823 mono_metadata_decode_row (t, index, cols, MONO_ASSEMBLYREF_SIZE);
825 hash = mono_metadata_blob_heap (image, cols [MONO_ASSEMBLYREF_HASH_VALUE]);
826 aname->hash_len = mono_metadata_decode_blob_size (hash, &hash);
827 aname->hash_value = hash;
828 aname->name = mono_metadata_string_heap (image, cols [MONO_ASSEMBLYREF_NAME]);
829 aname->culture = mono_metadata_string_heap (image, cols [MONO_ASSEMBLYREF_CULTURE]);
830 aname->flags = cols [MONO_ASSEMBLYREF_FLAGS];
831 aname->major = cols [MONO_ASSEMBLYREF_MAJOR_VERSION];
832 aname->minor = cols [MONO_ASSEMBLYREF_MINOR_VERSION];
833 aname->build = cols [MONO_ASSEMBLYREF_BUILD_NUMBER];
834 aname->revision = cols [MONO_ASSEMBLYREF_REV_NUMBER];
836 if (cols [MONO_ASSEMBLYREF_PUBLIC_KEY]) {
837 gchar *token = assemblyref_public_tok (image, cols [MONO_ASSEMBLYREF_PUBLIC_KEY], aname->flags);
838 g_strlcpy ((char*)aname->public_key_token, token, MONO_PUBLIC_KEY_TOKEN_LENGTH);
841 memset (aname->public_key_token, 0, MONO_PUBLIC_KEY_TOKEN_LENGTH);
846 mono_assembly_load_reference (MonoImage *image, int index)
848 MonoAssembly *reference;
849 MonoAssemblyName aname;
850 MonoImageOpenStatus status;
853 * image->references is shared between threads, so we need to access
854 * it inside a critical section.
856 mono_assemblies_lock ();
857 if (!image->references)
858 mono_assembly_load_references (image, &status);
859 reference = image->references [index];
860 mono_assemblies_unlock ();
864 mono_assembly_get_assemblyref (image, index, &aname);
866 if (image->assembly && image->assembly->ref_only) {
867 /* We use the loaded corlib */
868 if (!strcmp (aname.name, "mscorlib"))
869 reference = mono_assembly_load_full (&aname, image->assembly->basedir, &status, FALSE);
871 reference = mono_assembly_loaded_full (&aname, TRUE);
873 * Here we must advice that the error was due to
874 * a non loaded reference using the ReflectionOnly api
877 reference = REFERENCE_MISSING;
879 reference = mono_assembly_load (&aname, image->assembly? image->assembly->basedir: NULL, &status);
881 if (reference == NULL){
882 char *extra_msg = g_strdup ("");
884 if (status == MONO_IMAGE_ERROR_ERRNO && errno == ENOENT) {
885 extra_msg = g_strdup_printf ("The assembly was not found in the Global Assembly Cache, a path listed in the MONO_PATH environment variable, or in the location of the executing assembly (%s).\n", image->assembly->basedir);
886 } else if (status == MONO_IMAGE_ERROR_ERRNO) {
887 extra_msg = g_strdup_printf ("System error: %s\n", strerror (errno));
888 } else if (status == MONO_IMAGE_MISSING_ASSEMBLYREF) {
889 extra_msg = g_strdup ("Cannot find an assembly referenced from this one.\n");
890 } else if (status == MONO_IMAGE_IMAGE_INVALID) {
891 extra_msg = g_strdup ("The file exists but is not a valid assembly.\n");
894 g_warning ("The following assembly referenced from %s could not be loaded:\n"
895 " Assembly: %s (assemblyref_index=%d)\n"
896 " Version: %d.%d.%d.%d\n"
897 " Public Key: %s\n%s",
898 image->name, aname.name, index,
899 aname.major, aname.minor, aname.build, aname.revision,
900 strlen ((char*)aname.public_key_token) == 0 ? "(none)" : (char*)aname.public_key_token, extra_msg);
904 mono_assemblies_lock ();
905 if (reference == NULL) {
906 /* Flag as not found */
907 reference = REFERENCE_MISSING;
910 if (!image->references [index]) {
911 if (reference != REFERENCE_MISSING){
912 mono_assembly_addref (reference);
914 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly Ref addref %s %p -> %s %p: %d\n",
915 image->assembly->aname.name, image->assembly, reference->aname.name, reference, reference->ref_count);
918 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Failed to load assembly %s %p\n",
919 image->assembly->aname.name, image->assembly);
922 image->references [index] = reference;
924 mono_assemblies_unlock ();
926 if (image->references [index] != reference) {
927 /* Somebody loaded it before us */
928 mono_assembly_close (reference);
933 mono_assembly_load_references (MonoImage *image, MonoImageOpenStatus *status)
937 *status = MONO_IMAGE_OK;
939 t = &image->tables [MONO_TABLE_ASSEMBLYREF];
941 image->references = g_new0 (MonoAssembly *, t->rows + 1);
944 typedef struct AssemblyLoadHook AssemblyLoadHook;
945 struct AssemblyLoadHook {
946 AssemblyLoadHook *next;
947 MonoAssemblyLoadFunc func;
951 AssemblyLoadHook *assembly_load_hook = NULL;
954 mono_assembly_invoke_load_hook (MonoAssembly *ass)
956 AssemblyLoadHook *hook;
958 for (hook = assembly_load_hook; hook; hook = hook->next) {
959 hook->func (ass, hook->user_data);
964 mono_install_assembly_load_hook (MonoAssemblyLoadFunc func, gpointer user_data)
966 AssemblyLoadHook *hook;
968 g_return_if_fail (func != NULL);
970 hook = g_new0 (AssemblyLoadHook, 1);
972 hook->user_data = user_data;
973 hook->next = assembly_load_hook;
974 assembly_load_hook = hook;
978 free_assembly_load_hooks (void)
980 AssemblyLoadHook *hook, *next;
982 for (hook = assembly_load_hook; hook; hook = next) {
988 typedef struct AssemblySearchHook AssemblySearchHook;
989 struct AssemblySearchHook {
990 AssemblySearchHook *next;
991 MonoAssemblySearchFunc func;
997 AssemblySearchHook *assembly_search_hook = NULL;
1000 mono_assembly_invoke_search_hook_internal (MonoAssemblyName *aname, gboolean refonly, gboolean postload)
1002 AssemblySearchHook *hook;
1004 for (hook = assembly_search_hook; hook; hook = hook->next) {
1005 if ((hook->refonly == refonly) && (hook->postload == postload)) {
1006 MonoAssembly *ass = hook->func (aname, hook->user_data);
1016 mono_assembly_invoke_search_hook (MonoAssemblyName *aname)
1018 return mono_assembly_invoke_search_hook_internal (aname, FALSE, FALSE);
1022 mono_install_assembly_search_hook_internal (MonoAssemblySearchFunc func, gpointer user_data, gboolean refonly, gboolean postload)
1024 AssemblySearchHook *hook;
1026 g_return_if_fail (func != NULL);
1028 hook = g_new0 (AssemblySearchHook, 1);
1030 hook->user_data = user_data;
1031 hook->refonly = refonly;
1032 hook->postload = postload;
1033 hook->next = assembly_search_hook;
1034 assembly_search_hook = hook;
1038 mono_install_assembly_search_hook (MonoAssemblySearchFunc func, gpointer user_data)
1040 mono_install_assembly_search_hook_internal (func, user_data, FALSE, FALSE);
1044 free_assembly_search_hooks (void)
1046 AssemblySearchHook *hook, *next;
1048 for (hook = assembly_search_hook; hook; hook = next) {
1055 mono_install_assembly_refonly_search_hook (MonoAssemblySearchFunc func, gpointer user_data)
1057 mono_install_assembly_search_hook_internal (func, user_data, TRUE, FALSE);
1061 mono_install_assembly_postload_search_hook (MonoAssemblySearchFunc func, gpointer user_data)
1063 mono_install_assembly_search_hook_internal (func, user_data, FALSE, TRUE);
1067 mono_install_assembly_postload_refonly_search_hook (MonoAssemblySearchFunc func, gpointer user_data)
1069 mono_install_assembly_search_hook_internal (func, user_data, TRUE, TRUE);
1072 typedef struct AssemblyPreLoadHook AssemblyPreLoadHook;
1073 struct AssemblyPreLoadHook {
1074 AssemblyPreLoadHook *next;
1075 MonoAssemblyPreLoadFunc func;
1079 static AssemblyPreLoadHook *assembly_preload_hook = NULL;
1080 static AssemblyPreLoadHook *assembly_refonly_preload_hook = NULL;
1082 static MonoAssembly *
1083 invoke_assembly_preload_hook (MonoAssemblyName *aname, gchar **assemblies_path)
1085 AssemblyPreLoadHook *hook;
1086 MonoAssembly *assembly;
1088 for (hook = assembly_preload_hook; hook; hook = hook->next) {
1089 assembly = hook->func (aname, assemblies_path, hook->user_data);
1090 if (assembly != NULL)
1097 static MonoAssembly *
1098 invoke_assembly_refonly_preload_hook (MonoAssemblyName *aname, gchar **assemblies_path)
1100 AssemblyPreLoadHook *hook;
1101 MonoAssembly *assembly;
1103 for (hook = assembly_refonly_preload_hook; hook; hook = hook->next) {
1104 assembly = hook->func (aname, assemblies_path, hook->user_data);
1105 if (assembly != NULL)
1113 mono_install_assembly_preload_hook (MonoAssemblyPreLoadFunc func, gpointer user_data)
1115 AssemblyPreLoadHook *hook;
1117 g_return_if_fail (func != NULL);
1119 hook = g_new0 (AssemblyPreLoadHook, 1);
1121 hook->user_data = user_data;
1122 hook->next = assembly_preload_hook;
1123 assembly_preload_hook = hook;
1127 mono_install_assembly_refonly_preload_hook (MonoAssemblyPreLoadFunc func, gpointer user_data)
1129 AssemblyPreLoadHook *hook;
1131 g_return_if_fail (func != NULL);
1133 hook = g_new0 (AssemblyPreLoadHook, 1);
1135 hook->user_data = user_data;
1136 hook->next = assembly_refonly_preload_hook;
1137 assembly_refonly_preload_hook = hook;
1141 free_assembly_preload_hooks (void)
1143 AssemblyPreLoadHook *hook, *next;
1145 for (hook = assembly_preload_hook; hook; hook = next) {
1150 for (hook = assembly_refonly_preload_hook; hook; hook = next) {
1157 absolute_dir (const gchar *filename)
1168 if (g_path_is_absolute (filename))
1169 return g_path_get_dirname (filename);
1171 cwd = g_get_current_dir ();
1172 mixed = g_build_filename (cwd, filename, NULL);
1173 parts = g_strsplit (mixed, G_DIR_SEPARATOR_S, 0);
1178 for (i = 0; (part = parts [i]) != NULL; i++) {
1179 if (!strcmp (part, "."))
1182 if (!strcmp (part, "..")) {
1183 if (list && list->next) /* Don't remove root */
1184 list = g_list_delete_link (list, list);
1186 list = g_list_prepend (list, part);
1190 result = g_string_new ("");
1191 list = g_list_reverse (list);
1193 /* Ignores last data pointer, which should be the filename */
1194 for (tmp = list; tmp && tmp->next != NULL; tmp = tmp->next){
1196 g_string_append_printf (result, "%s%c", (char *) tmp->data,
1201 g_string_free (result, FALSE);
1206 return g_strdup (".");
1213 * mono_assembly_open_from_bundle:
1214 * @filename: Filename requested
1215 * @status: return value
1217 * This routine tries to open the assembly specified by `filename' from the
1218 * defined bundles, if found, returns the MonoImage for it, if not found
1222 mono_assembly_open_from_bundle (const char *filename, MonoImageOpenStatus *status, gboolean refonly)
1226 MonoImage *image = NULL;
1229 * we do a very simple search for bundled assemblies: it's not a general
1230 * purpose assembly loading mechanism.
1236 name = g_path_get_basename (filename);
1238 mono_assemblies_lock ();
1239 for (i = 0; !image && bundles [i]; ++i) {
1240 if (strcmp (bundles [i]->name, name) == 0) {
1241 image = mono_image_open_from_data_full ((char*)bundles [i]->data, bundles [i]->size, FALSE, status, refonly);
1245 mono_assemblies_unlock ();
1248 mono_image_addref (image);
1255 mono_assembly_open_full (const char *filename, MonoImageOpenStatus *status, gboolean refonly)
1259 MonoImageOpenStatus def_status;
1262 g_return_val_if_fail (filename != NULL, NULL);
1265 status = &def_status;
1266 *status = MONO_IMAGE_OK;
1268 if (strncmp (filename, "file://", 7) == 0) {
1269 GError *error = NULL;
1270 gchar *uri = (gchar *) filename;
1274 * MS allows file://c:/... and fails on file://localhost/c:/...
1275 * They also throw an IndexOutOfRangeException if "file://"
1278 uri = g_strdup_printf ("file:///%s", uri + 7);
1281 uri = mono_escape_uri_string (tmpuri);
1282 fname = g_filename_from_uri (uri, NULL, &error);
1285 if (tmpuri != filename)
1288 if (error != NULL) {
1289 g_warning ("%s\n", error->message);
1290 g_error_free (error);
1291 fname = g_strdup (filename);
1294 fname = g_strdup (filename);
1297 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY,
1298 "Assembly Loader probing location: '%s'.", filename);
1301 if (bundles != NULL)
1302 image = mono_assembly_open_from_bundle (fname, status, refonly);
1305 mono_assemblies_lock ();
1306 image = mono_image_open_full (fname, status, refonly);
1307 mono_assemblies_unlock ();
1311 if (*status == MONO_IMAGE_OK)
1312 *status = MONO_IMAGE_ERROR_ERRNO;
1317 if (image->assembly) {
1318 /* Already loaded by another appdomain */
1319 mono_assembly_invoke_load_hook (image->assembly);
1320 mono_image_close (image);
1322 return image->assembly;
1325 ass = mono_assembly_load_from_full (image, fname, status, refonly);
1328 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY,
1329 "Assembly Loader loaded assembly from location: '%s'.", filename);
1331 mono_config_for_assembly (ass->image);
1334 /* Clear the reference added by mono_image_open */
1335 mono_image_close (image);
1343 * load_friend_assemblies:
1346 * Load the list of friend assemblies that are allowed to access
1347 * the assembly's internal types and members. They are stored as assembly
1348 * names in custom attributes.
1351 load_friend_assemblies (MonoAssembly* ass)
1354 MonoCustomAttrInfo* attrs = mono_custom_attrs_from_assembly (ass);
1357 for (i = 0; i < attrs->num_attrs; ++i) {
1358 MonoCustomAttrEntry *attr = &attrs->attrs [i];
1359 MonoAssemblyName *aname;
1362 /* Do some sanity checking */
1363 if (!attr->ctor || attr->ctor->klass != mono_defaults.internals_visible_class)
1365 if (attr->data_size < 4)
1367 data = (const char*)attr->data;
1368 /* 0xFF means null string, see custom attr format */
1369 if (data [0] != 1 || data [1] != 0 || (data [2] & 0xFF) == 0xFF)
1371 slen = mono_metadata_decode_value (data + 2, &data);
1372 aname = g_new0 (MonoAssemblyName, 1);
1373 /*g_print ("friend ass: %s\n", data);*/
1374 if (mono_assembly_name_parse_full (data, aname, TRUE, NULL)) {
1375 ass->friend_assembly_names = g_slist_prepend (ass->friend_assembly_names, aname);
1380 mono_custom_attrs_free (attrs);
1384 * mono_assembly_open:
1385 * @filename: Opens the assembly pointed out by this name
1386 * @status: where a status code can be returned
1388 * mono_assembly_open opens the PE-image pointed by @filename, and
1389 * loads any external assemblies referenced by it.
1391 * Return: a pointer to the MonoAssembly if @filename contains a valid
1392 * assembly or NULL on error. Details about the error are stored in the
1396 mono_assembly_open (const char *filename, MonoImageOpenStatus *status)
1398 return mono_assembly_open_full (filename, status, FALSE);
1402 mono_assembly_load_from_full (MonoImage *image, const char*fname,
1403 MonoImageOpenStatus *status, gboolean refonly)
1405 MonoAssembly *ass, *ass2;
1408 GHashTable *ass_loading;
1410 if (!image->tables [MONO_TABLE_ASSEMBLY].rows) {
1411 /* 'image' doesn't have a manifest -- maybe someone is trying to Assembly.Load a .netmodule */
1412 *status = MONO_IMAGE_IMAGE_INVALID;
1417 #if defined (PLATFORM_WIN32)
1422 tmp_fn = g_strdup (fname);
1423 for (i = strlen (tmp_fn) - 1; i >= 0; i--) {
1424 if (tmp_fn [i] == '/')
1428 base_dir = absolute_dir (tmp_fn);
1432 base_dir = absolute_dir (fname);
1436 * To avoid deadlocks and scalability problems, we load assemblies outside
1437 * the assembly lock. This means that multiple threads might try to load
1438 * the same assembly at the same time. The first one to load it completely
1439 * "wins", the other threads free their copy and use the one loaded by
1440 * the winning thread.
1444 * Create assembly struct, and enter it into the assembly cache
1446 ass = g_new0 (MonoAssembly, 1);
1447 ass->basedir = base_dir;
1448 ass->ref_only = refonly;
1451 /* Add a non-temporary reference because of ass->image */
1452 mono_image_addref (image);
1454 mono_assembly_fill_assembly_name (image, &ass->aname);
1456 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Image addref %s %p -> %s %p: %d\n", ass->aname.name, ass, image->name, image, image->ref_count);
1459 * Atomically search the loaded list and add ourselves to it if necessary.
1461 mono_assemblies_lock ();
1462 if (ass->aname.name) {
1463 /* avoid loading the same assembly twice for now... */
1464 ass2 = search_loaded (&ass->aname, refonly);
1466 mono_assemblies_unlock ();
1469 mono_image_close (image);
1470 *status = MONO_IMAGE_OK;
1474 ass_loading = refonly ? assemblies_refonly_loading : assemblies_loading;
1475 loading = g_hash_table_lookup (ass_loading, (gpointer)GetCurrentThreadId ());
1476 loading = g_list_prepend (loading, ass);
1477 g_hash_table_insert (ass_loading, (gpointer)GetCurrentThreadId (), loading);
1478 mono_assemblies_unlock ();
1480 g_assert (image->assembly == NULL);
1481 image->assembly = ass;
1483 mono_assembly_load_references (image, status);
1485 mono_assemblies_lock ();
1487 loading = g_hash_table_lookup (ass_loading, (gpointer)GetCurrentThreadId ());
1488 loading = g_list_remove (loading, ass);
1489 if (loading == NULL)
1490 /* Prevent memory leaks */
1491 g_hash_table_remove (ass_loading, (gpointer)GetCurrentThreadId ());
1493 g_hash_table_insert (ass_loading, (gpointer)GetCurrentThreadId (), loading);
1494 if (*status != MONO_IMAGE_OK) {
1495 mono_assemblies_unlock ();
1496 mono_assembly_close (ass);
1500 if (ass->aname.name) {
1501 ass2 = search_loaded (&ass->aname, refonly);
1503 /* Somebody else has loaded the assembly before us */
1504 mono_assemblies_unlock ();
1505 mono_assembly_close (ass);
1510 loaded_assemblies = g_list_prepend (loaded_assemblies, ass);
1511 if (mono_defaults.internals_visible_class)
1512 load_friend_assemblies (ass);
1513 mono_assemblies_unlock ();
1515 mono_assembly_invoke_load_hook (ass);
1521 mono_assembly_load_from (MonoImage *image, const char *fname,
1522 MonoImageOpenStatus *status)
1524 return mono_assembly_load_from_full (image, fname, status, FALSE);
1528 * mono_assembly_name_free:
1529 * @aname: assembly name to free
1531 * Frees the provided assembly name object.
1532 * (it does not frees the object itself, only the name members).
1535 mono_assembly_name_free (MonoAssemblyName *aname)
1540 g_free ((void *) aname->name);
1541 g_free ((void *) aname->culture);
1542 g_free ((void *) aname->hash_value);
1546 parse_public_key (const gchar *key, gchar** pubkey)
1549 gchar header [16], val, *arr;
1550 gint i, j, offset, bitlen, keylen, pkeylen;
1552 keylen = strlen (key) >> 1;
1556 val = g_ascii_xdigit_value (key [0]) << 4;
1557 val |= g_ascii_xdigit_value (key [1]);
1562 val = g_ascii_xdigit_value (key [24]);
1563 val |= g_ascii_xdigit_value (key [25]);
1575 /* We need the first 16 bytes
1576 * to check whether this key is valid or not */
1577 pkeylen = strlen (pkey) >> 1;
1581 for (i = 0, j = 0; i < 16; i++) {
1582 header [i] = g_ascii_xdigit_value (pkey [j++]) << 4;
1583 header [i] |= g_ascii_xdigit_value (pkey [j++]);
1586 if (header [0] != 0x06 || /* PUBLICKEYBLOB (0x06) */
1587 header [1] != 0x02 || /* Version (0x02) */
1588 header [2] != 0x00 || /* Reserved (word) */
1589 header [3] != 0x00 ||
1590 (guint)(read32 (header + 8)) != 0x31415352) /* DWORD magic = RSA1 */
1593 /* Based on this length, we _should_ be able to know if the length is right */
1594 bitlen = read32 (header + 12) >> 3;
1595 if ((bitlen + 16 + 4) != pkeylen)
1598 /* Encode the size of the blob */
1600 if (keylen <= 127) {
1601 arr = g_malloc (keylen + 1);
1602 arr [offset++] = keylen;
1604 arr = g_malloc (keylen + 2);
1605 arr [offset++] = 0x80; /* 10bs */
1606 arr [offset++] = keylen;
1609 for (i = offset, j = 0; i < keylen + offset; i++) {
1610 arr [i] = g_ascii_xdigit_value (key [j++]) << 4;
1611 arr [i] |= g_ascii_xdigit_value (key [j++]);
1620 build_assembly_name (const char *name, const char *version, const char *culture, const char *token, const char *key, MonoAssemblyName *aname, gboolean save_public_key)
1622 gint major, minor, build, revision;
1625 gchar *pkey, *pkeyptr, *encoded, tok [8];
1627 memset (aname, 0, sizeof (MonoAssemblyName));
1630 version_parts = sscanf (version, "%u.%u.%u.%u", &major, &minor, &build, &revision);
1631 if (version_parts < 2 || version_parts > 4)
1634 /* FIXME: we should set build & revision to -1 (instead of 0)
1635 if these are not set in the version string. That way, later on,
1636 we can still determine if these were specified. */
1637 aname->major = major;
1638 aname->minor = minor;
1639 if (version_parts >= 3)
1640 aname->build = build;
1643 if (version_parts == 4)
1644 aname->revision = revision;
1646 aname->revision = 0;
1649 aname->name = g_strdup (name);
1652 if (g_ascii_strcasecmp (culture, "neutral") == 0)
1653 aname->culture = g_strdup ("");
1655 aname->culture = g_strdup (culture);
1658 if (token && strncmp (token, "null", 4) != 0) {
1659 char *lower = g_ascii_strdown (token, MONO_PUBLIC_KEY_TOKEN_LENGTH);
1660 g_strlcpy ((char*)aname->public_key_token, lower, MONO_PUBLIC_KEY_TOKEN_LENGTH);
1664 if (key && strncmp (key, "null", 4) != 0) {
1665 if (!parse_public_key (key, &pkey)) {
1666 mono_assembly_name_free (aname);
1670 len = mono_metadata_decode_blob_size ((const gchar *) pkey, (const gchar **) &pkeyptr);
1671 // We also need to generate the key token
1672 mono_digest_get_public_token ((guchar*) tok, (guint8*) pkeyptr, len);
1673 encoded = encode_public_tok ((guchar*) tok, 8);
1674 g_strlcpy ((gchar*)aname->public_key_token, encoded, MONO_PUBLIC_KEY_TOKEN_LENGTH);
1677 if (save_public_key)
1678 aname->public_key = (guint8*) pkey;
1687 parse_assembly_directory_name (const char *name, const char *dirname, MonoAssemblyName *aname)
1692 parts = g_strsplit (dirname, "_", 3);
1693 if (!parts || !parts[0] || !parts[1] || !parts[2]) {
1698 res = build_assembly_name (name, parts[0], parts[1], parts[2], NULL, aname, FALSE);
1704 mono_assembly_name_parse_full (const char *name, MonoAssemblyName *aname, gboolean save_public_key, gboolean *is_version_defined)
1707 gchar *version = NULL;
1708 gchar *culture = NULL;
1709 gchar *token = NULL;
1715 gboolean version_defined;
1717 if (!is_version_defined)
1718 is_version_defined = &version_defined;
1719 *is_version_defined = FALSE;
1721 parts = tmp = g_strsplit (name, ",", 4);
1722 if (!tmp || !*tmp) {
1727 dllname = g_strstrip (*tmp);
1732 value = g_strstrip (*tmp);
1733 if (!g_ascii_strncasecmp (value, "Version=", 8)) {
1734 *is_version_defined = TRUE;
1735 version = g_strstrip (value + 8);
1740 if (!g_ascii_strncasecmp (value, "Culture=", 8)) {
1741 culture = g_strstrip (value + 8);
1746 if (!g_ascii_strncasecmp (value, "PublicKeyToken=", 15)) {
1747 token = g_strstrip (value + 15);
1752 if (!g_ascii_strncasecmp (value, "PublicKey=", 10)) {
1753 key = g_strstrip (value + 10);
1758 if (!g_ascii_strncasecmp (value, "ProcessorArchitecture=", 22)) {
1759 /* this is ignored for now, until we can change MonoAssemblyName */
1768 res = build_assembly_name (dllname, version, culture, token, key, aname, save_public_key);
1774 * mono_assembly_name_parse:
1775 * @name: name to parse
1776 * @aname: the destination assembly name
1778 * Parses an assembly qualified type name and assigns the name,
1779 * version, culture and token to the provided assembly name object.
1781 * Returns: true if the name could be parsed.
1784 mono_assembly_name_parse (const char *name, MonoAssemblyName *aname)
1786 return mono_assembly_name_parse_full (name, aname, FALSE, NULL);
1789 static MonoAssembly*
1790 probe_for_partial_name (const char *basepath, const char *fullname, MonoAssemblyName *aname, MonoImageOpenStatus *status)
1792 gchar *fullpath = NULL;
1794 const char* direntry;
1795 MonoAssemblyName gac_aname;
1796 gint major=-1, minor=0, build=0, revision=0;
1797 gboolean exact_version;
1799 dirhandle = g_dir_open (basepath, 0, NULL);
1803 exact_version = (aname->major | aname->minor | aname->build | aname->revision) != 0;
1805 while ((direntry = g_dir_read_name (dirhandle))) {
1806 gboolean match = TRUE;
1808 parse_assembly_directory_name (aname->name, direntry, &gac_aname);
1810 if (aname->culture != NULL && strcmp (aname->culture, gac_aname.culture) != 0)
1813 if (match && strlen ((char*)aname->public_key_token) > 0 &&
1814 strcmp ((char*)aname->public_key_token, (char*)gac_aname.public_key_token) != 0)
1818 if (exact_version) {
1819 match = (aname->major == gac_aname.major && aname->minor == gac_aname.minor &&
1820 aname->build == gac_aname.build && aname->revision == gac_aname.revision);
1822 else if (gac_aname.major < major)
1824 else if (gac_aname.major == major) {
1825 if (gac_aname.minor < minor)
1827 else if (gac_aname.minor == minor) {
1828 if (gac_aname.build < build)
1830 else if (gac_aname.build == build && gac_aname.revision <= revision)
1837 major = gac_aname.major;
1838 minor = gac_aname.minor;
1839 build = gac_aname.build;
1840 revision = gac_aname.revision;
1842 fullpath = g_build_path (G_DIR_SEPARATOR_S, basepath, direntry, fullname, NULL);
1845 mono_assembly_name_free (&gac_aname);
1848 g_dir_close (dirhandle);
1850 if (fullpath == NULL)
1853 MonoAssembly *res = mono_assembly_open (fullpath, status);
1860 mono_assembly_load_with_partial_name (const char *name, MonoImageOpenStatus *status)
1863 MonoAssemblyName *aname, base_name, maped_aname;
1864 gchar *fullname, *gacpath;
1867 memset (&base_name, 0, sizeof (MonoAssemblyName));
1870 if (!mono_assembly_name_parse (name, aname))
1874 * If no specific version has been requested, make sure we load the
1875 * correct version for system assemblies.
1877 if ((aname->major | aname->minor | aname->build | aname->revision) == 0)
1878 aname = mono_assembly_remap_version (aname, &maped_aname);
1880 res = mono_assembly_loaded (aname);
1882 mono_assembly_name_free (aname);
1886 res = invoke_assembly_preload_hook (aname, assemblies_path);
1888 res->in_gac = FALSE;
1889 mono_assembly_name_free (aname);
1893 fullname = g_strdup_printf ("%s.dll", aname->name);
1895 if (extra_gac_paths) {
1896 paths = extra_gac_paths;
1897 while (!res && *paths) {
1898 gacpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "lib", "mono", "gac", aname->name, NULL);
1899 res = probe_for_partial_name (gacpath, fullname, aname, status);
1908 mono_assembly_name_free (aname);
1912 gacpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (), "mono", "gac", aname->name, NULL);
1913 res = probe_for_partial_name (gacpath, fullname, aname, status);
1920 mono_assembly_name_free (aname);
1926 mono_assembly_load_publisher_policy (MonoAssemblyName *aname)
1929 gchar *filename, *pname, *name, *culture, *version, *fullpath, *subpath;
1933 if (strstr (aname->name, ".dll")) {
1934 len = strlen (aname->name) - 4;
1935 name = g_malloc (len);
1936 strncpy (name, aname->name, len);
1938 name = g_strdup (aname->name);
1940 if (aname->culture) {
1941 culture = g_strdup (aname->culture);
1942 g_strdown (culture);
1944 culture = g_strdup ("");
1946 pname = g_strdup_printf ("policy.%d.%d.%s", aname->major, aname->minor, name);
1947 version = g_strdup_printf ("0.0.0.0_%s_%s", culture, aname->public_key_token);
1951 filename = g_strconcat (pname, ".dll", NULL);
1952 subpath = g_build_path (G_DIR_SEPARATOR_S, pname, version, filename, NULL);
1958 if (extra_gac_paths) {
1959 paths = extra_gac_paths;
1960 while (!image && *paths) {
1961 fullpath = g_build_path (G_DIR_SEPARATOR_S, *paths,
1962 "lib", "mono", "gac", subpath, NULL);
1963 image = mono_image_open (fullpath, NULL);
1974 fullpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (),
1975 "mono", "gac", subpath, NULL);
1976 image = mono_image_open (fullpath, NULL);
1983 static MonoAssemblyName*
1984 mono_assembly_bind_version (MonoAssemblyBindingInfo *info, MonoAssemblyName *aname, MonoAssemblyName *dest_name)
1986 memcpy (dest_name, aname, sizeof (MonoAssemblyName));
1987 dest_name->major = info->new_version.major;
1988 dest_name->minor = info->new_version.minor;
1989 dest_name->build = info->new_version.build;
1990 dest_name->revision = info->new_version.revision;
1995 /* LOCKING: Assumes that we are already locked */
1996 static MonoAssemblyBindingInfo*
1997 search_binding_loaded (MonoAssemblyName *aname)
2001 for (tmp = loaded_assembly_bindings; tmp; tmp = tmp->next) {
2002 MonoAssemblyBindingInfo *info = tmp->data;
2003 if (assembly_binding_maps_name (info, aname))
2010 static MonoAssemblyName*
2011 mono_assembly_apply_binding (MonoAssemblyName *aname, MonoAssemblyName *dest_name)
2013 MonoAssemblyBindingInfo *info, *info2;
2016 if (aname->public_key_token [0] == 0)
2019 mono_loader_lock ();
2020 info = search_binding_loaded (aname);
2021 mono_loader_unlock ();
2023 if (!check_policy_versions (info, aname))
2026 mono_assembly_bind_version (info, aname, dest_name);
2030 info = g_new0 (MonoAssemblyBindingInfo, 1);
2031 info->major = aname->major;
2032 info->minor = aname->minor;
2034 ppimage = mono_assembly_load_publisher_policy (aname);
2036 get_publisher_policy_info (ppimage, aname, info);
2037 mono_image_close (ppimage);
2040 /* Define default error value if needed */
2041 if (!info->is_valid) {
2042 info->name = g_strdup (aname->name);
2043 info->culture = g_strdup (aname->culture);
2044 g_strlcpy ((char *)info->public_key_token, (const char *)aname->public_key_token, MONO_PUBLIC_KEY_TOKEN_LENGTH);
2047 mono_loader_lock ();
2048 info2 = search_binding_loaded (aname);
2050 /* This binding was added by another thread
2052 mono_assembly_binding_info_free (info);
2057 loaded_assembly_bindings = g_slist_prepend (loaded_assembly_bindings, info);
2059 mono_loader_unlock ();
2061 if (!info->is_valid || !check_policy_versions (info, aname))
2064 mono_assembly_bind_version (info, aname, dest_name);
2069 * mono_assembly_load_from_gac
2071 * @aname: The assembly name object
2073 static MonoAssembly*
2074 mono_assembly_load_from_gac (MonoAssemblyName *aname, gchar *filename, MonoImageOpenStatus *status, MonoBoolean refonly)
2076 MonoAssembly *result = NULL;
2077 gchar *name, *version, *culture, *fullpath, *subpath;
2081 if (aname->public_key_token [0] == 0) {
2085 if (strstr (aname->name, ".dll")) {
2086 len = strlen (filename) - 4;
2087 name = g_malloc (len);
2088 strncpy (name, aname->name, len);
2090 name = g_strdup (aname->name);
2093 if (aname->culture) {
2094 culture = g_strdup (aname->culture);
2095 g_strdown (culture);
2097 culture = g_strdup ("");
2100 version = g_strdup_printf ("%d.%d.%d.%d_%s_%s", aname->major,
2101 aname->minor, aname->build, aname->revision,
2102 culture, aname->public_key_token);
2104 subpath = g_build_path (G_DIR_SEPARATOR_S, name, version, filename, NULL);
2109 if (extra_gac_paths) {
2110 paths = extra_gac_paths;
2111 while (!result && *paths) {
2112 fullpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "lib", "mono", "gac", subpath, NULL);
2113 result = mono_assembly_open_full (fullpath, status, refonly);
2120 result->in_gac = TRUE;
2125 fullpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (),
2126 "mono", "gac", subpath, NULL);
2127 result = mono_assembly_open_full (fullpath, status, refonly);
2131 result->in_gac = TRUE;
2140 mono_assembly_load_corlib (const MonoRuntimeInfo *runtime, MonoImageOpenStatus *status)
2145 /* g_print ("corlib already loaded\n"); */
2149 if (assemblies_path) {
2150 corlib = load_in_path ("mscorlib.dll", (const char**)assemblies_path, status, FALSE);
2155 /* Load corlib from mono/<version> */
2157 corlib_file = g_build_filename ("mono", runtime->framework_version, "mscorlib.dll", NULL);
2158 if (assemblies_path) {
2159 corlib = load_in_path (corlib_file, (const char**)assemblies_path, status, FALSE);
2161 g_free (corlib_file);
2165 corlib = load_in_path (corlib_file, default_path, status, FALSE);
2166 g_free (corlib_file);
2172 * mono_assembly_load_full:
2173 * @aname: A MonoAssemblyName with the assembly name to load.
2174 * @basedir: A directory to look up the assembly at.
2175 * @status: a pointer to a MonoImageOpenStatus to return the status of the load operation
2176 * @refonly: Whether this assembly is being opened in "reflection-only" mode.
2178 * Loads the assembly referenced by @aname, if the value of @basedir is not NULL, it
2179 * attempts to load the assembly from that directory before probing the standard locations.
2181 * If the assembly is being opened in reflection-only mode (@refonly set to TRUE) then no
2182 * assembly binding takes place.
2184 * Returns: the assembly referenced by @aname loaded or NULL on error. On error the
2185 * value pointed by status is updated with an error code.
2188 mono_assembly_load_full (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status, gboolean refonly)
2190 MonoAssembly *result;
2191 char *fullpath, *filename;
2192 MonoAssemblyName maped_aname, maped_name_pp;
2197 aname = mono_assembly_remap_version (aname, &maped_aname);
2199 /* Reflection only assemblies don't get assembly binding */
2201 aname = mono_assembly_apply_binding (aname, &maped_name_pp);
2203 result = mono_assembly_loaded_full (aname, refonly);
2207 result = refonly ? invoke_assembly_refonly_preload_hook (aname, assemblies_path) : invoke_assembly_preload_hook (aname, assemblies_path);
2209 result->in_gac = FALSE;
2213 /* Currently we retrieve the loaded corlib for reflection
2214 * only requests, like a common reflection only assembly
2216 if (strcmp (aname->name, "mscorlib") == 0 || strcmp (aname->name, "mscorlib.dll") == 0) {
2217 return mono_assembly_load_corlib (mono_get_runtime_info (), status);
2220 len = strlen (aname->name);
2221 for (ext_index = 0; ext_index < 2; ext_index ++) {
2222 ext = ext_index == 0 ? ".dll" : ".exe";
2223 if (len > 4 && (!strcmp (aname->name + len - 4, ".dll") || !strcmp (aname->name + len - 4, ".exe"))) {
2224 filename = g_strdup (aname->name);
2225 /* Don't try appending .dll/.exe if it already has one of those extensions */
2228 filename = g_strconcat (aname->name, ext, NULL);
2231 result = mono_assembly_load_from_gac (aname, filename, status, refonly);
2238 fullpath = g_build_filename (basedir, filename, NULL);
2239 result = mono_assembly_open_full (fullpath, status, refonly);
2242 result->in_gac = FALSE;
2248 result = load_in_path (filename, default_path, status, refonly);
2250 result->in_gac = FALSE;
2256 /* Try a postload search hook */
2257 result = mono_assembly_invoke_search_hook_internal (aname, refonly, TRUE);
2263 * mono_assembly_load:
2264 * @aname: A MonoAssemblyName with the assembly name to load.
2265 * @basedir: A directory to look up the assembly at.
2266 * @status: a pointer to a MonoImageOpenStatus to return the status of the load operation
2268 * Loads the assembly referenced by @aname, if the value of @basedir is not NULL, it
2269 * attempts to load the assembly from that directory before probing the standard locations.
2271 * Returns: the assembly referenced by @aname loaded or NULL on error. On error the
2272 * value pointed by status is updated with an error code.
2275 mono_assembly_load (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status)
2277 return mono_assembly_load_full (aname, basedir, status, FALSE);
2281 mono_assembly_loaded_full (MonoAssemblyName *aname, gboolean refonly)
2284 MonoAssemblyName maped_aname;
2286 aname = mono_assembly_remap_version (aname, &maped_aname);
2288 mono_assemblies_lock ();
2289 res = search_loaded (aname, refonly);
2290 mono_assemblies_unlock ();
2296 * mono_assembly_loaded:
2297 * @aname: an assembly to look for.
2299 * Returns: NULL If the given @aname assembly has not been loaded, or a pointer to
2300 * a MonoAssembly that matches the MonoAssemblyName specified.
2303 mono_assembly_loaded (MonoAssemblyName *aname)
2305 return mono_assembly_loaded_full (aname, FALSE);
2309 * mono_assembly_close:
2310 * @assembly: the assembly to release.
2312 * This method releases a reference to the @assembly. The assembly is
2313 * only released when all the outstanding references to it are released.
2316 mono_assembly_close (MonoAssembly *assembly)
2319 g_return_if_fail (assembly != NULL);
2321 if (assembly == REFERENCE_MISSING)
2324 /* Might be 0 already */
2325 if (InterlockedDecrement (&assembly->ref_count) > 0)
2328 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Unloading assembly %s [%p].", assembly->aname.name, assembly);
2330 mono_assemblies_lock ();
2331 loaded_assemblies = g_list_remove (loaded_assemblies, assembly);
2332 mono_assemblies_unlock ();
2334 if (assembly->image->references) {
2337 for (i = 0; assembly->image->references [i]; i++) {
2338 if (assembly->image->references [i])
2339 mono_assembly_close (assembly->image->references [i]);
2342 g_free (assembly->image->references);
2343 assembly->image->references = NULL;
2346 assembly->image->assembly = NULL;
2348 mono_image_close (assembly->image);
2350 for (tmp = assembly->friend_assembly_names; tmp; tmp = tmp->next) {
2351 MonoAssemblyName *fname = tmp->data;
2352 mono_assembly_name_free (fname);
2355 g_slist_free (assembly->friend_assembly_names);
2356 g_free (assembly->basedir);
2357 if (assembly->dynamic) {
2358 g_free ((char*)assembly->aname.culture);
2365 mono_assembly_load_module (MonoAssembly *assembly, guint32 idx)
2367 MonoImageOpenStatus status;
2370 module = mono_image_load_file_for_image (assembly->image, idx);
2372 mono_assembly_load_references (module, &status);
2378 mono_assembly_foreach (GFunc func, gpointer user_data)
2383 * We make a copy of the list to avoid calling the callback inside the
2384 * lock, which could lead to deadlocks.
2386 mono_assemblies_lock ();
2387 copy = g_list_copy (loaded_assemblies);
2388 mono_assemblies_unlock ();
2390 g_list_foreach (loaded_assemblies, func, user_data);
2396 * mono_assemblies_cleanup:
2398 * Free all resources used by this module.
2401 mono_assemblies_cleanup (void)
2405 DeleteCriticalSection (&assemblies_mutex);
2407 g_hash_table_destroy (assemblies_loading);
2408 g_hash_table_destroy (assemblies_refonly_loading);
2410 for (l = loaded_assembly_bindings; l; l = l->next) {
2411 MonoAssemblyBindingInfo *info = l->data;
2413 mono_assembly_binding_info_free (info);
2416 g_slist_free (loaded_assembly_bindings);
2418 free_assembly_load_hooks ();
2419 free_assembly_search_hooks ();
2420 free_assembly_preload_hooks ();
2424 * Holds the assembly of the application, for
2425 * System.Diagnostics.Process::MainModule
2427 static MonoAssembly *main_assembly=NULL;
2430 mono_assembly_set_main (MonoAssembly *assembly)
2432 main_assembly = assembly;
2436 * mono_assembly_get_main:
2438 * Returns: the assembly for the application, the first assembly that is loaded by the VM
2441 mono_assembly_get_main (void)
2443 return (main_assembly);
2447 * mono_assembly_get_image:
2448 * @assembly: The assembly to retrieve the image from
2450 * Returns: the MonoImage associated with this assembly.
2453 mono_assembly_get_image (MonoAssembly *assembly)
2455 return assembly->image;
2459 mono_register_bundled_assemblies (const MonoBundledAssembly **assemblies)
2461 bundles = assemblies;