#include <glib.h>
#include <errno.h>
#include <string.h>
+#include <stdlib.h>
#include "assembly.h"
#include "image.h"
#include "cil-coff.h"
#include "rawbuffer.h"
+#ifdef WITH_BUNDLE
+#include "mono-bundle.h"
+#endif
+#include <mono/metadata/loader.h>
+#include <mono/metadata/tabledefs.h>
+#include <mono/io-layer/io-layer.h>
+#include <mono/utils/mono-uri.h>
+#include <mono/metadata/mono-config.h>
+#include <mono/utils/mono-digest.h>
+#ifdef PLATFORM_WIN32
+#include <mono/os/util.h>
+#endif
-#define CSIZE(x) (sizeof (x) / 4)
+/* the default search path is just MONO_ASSEMBLIES */
+static const char*
+default_path [] = {
+ MONO_ASSEMBLIES,
+ NULL
+};
+
+static char **assemblies_path = NULL;
/*
* keeps track of loaded assemblies
*/
-static GHashTable *assemblies;
+static GList *loaded_assemblies = NULL;
+static MonoAssembly *corlib;
+
+/* This protects loaded_assemblies and image->references */
+static CRITICAL_SECTION assemblies_mutex;
+
+/* A hastable of thread->assembly list mappings */
+static GHashTable *assemblies_loading;
+
+static char **extra_gac_paths = NULL;
+
+static gchar*
+encode_public_tok (const guchar *token, gint32 len)
+{
+ static gchar allowed [] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
+ gchar *res;
+ int i;
+
+ res = g_malloc (len * 2 + 1);
+ for (i = 0; i < len; i++) {
+ res [i * 2] = allowed [token [i] >> 4];
+ res [i * 2 + 1] = allowed [token [i] & 0xF];
+ }
+ res [len * 2] = 0;
+ return res;
+}
+
+static void
+check_path_env (void) {
+ const char *path;
+ char **splitted;
+
+ path = g_getenv ("MONO_PATH");
+ if (!path)
+ return;
+
+ splitted = g_strsplit (path, G_SEARCHPATH_SEPARATOR_S, 1000);
+ if (assemblies_path)
+ g_strfreev (assemblies_path);
+ assemblies_path = splitted;
+ if (g_getenv ("MONO_DEBUG") == NULL)
+ return;
+
+ while (*splitted) {
+ if (**splitted && !g_file_test (*splitted, G_FILE_TEST_IS_DIR))
+ g_warning ("'%s' in MONO_PATH doesn't exist or has wrong permissions.", *splitted);
+
+ splitted++;
+ }
+}
+
+static void
+check_extra_gac_path_env (void) {
+ const char *path;
+ char **splitted;
+
+ path = g_getenv ("MONO_GAC_PATH");
+ if (!path)
+ return;
+
+ splitted = g_strsplit (path, G_SEARCHPATH_SEPARATOR_S, 1000);
+ if (extra_gac_paths)
+ g_strfreev (extra_gac_paths);
+ extra_gac_paths = splitted;
+ if (g_getenv ("MONO_DEBUG") == NULL)
+ return;
+
+ while (*splitted) {
+ if (**splitted && !g_file_test (*splitted, G_FILE_TEST_IS_DIR))
+ g_warning ("'%s' in MONO_GAC_PATH doesn't exist or has wrong permissions.", *splitted);
+
+ splitted++;
+ }
+}
+
+static gboolean
+mono_assembly_names_equal (MonoAssemblyName *l, MonoAssemblyName *r)
+{
+ if (!l->name || !r->name)
+ return FALSE;
+
+ if (strcmp (l->name, r->name))
+ return FALSE;
+
+ /*
+ * simply compare names until some other issues are resolved
+ * (version info not getting set correctly for custom
+ * attributes).
+ */
+ /*
+ if (l->major != r->major || l->minor != r->minor ||
+ l->build != r->build || l->revision != r->revision)
+ return FALSE;
+
+ if (!l->public_tok_value && !r->public_tok_value)
+ return TRUE;
+
+ if ((l->public_tok_value && !r->public_tok_value) || (!l->public_tok_value && r->public_tok_value))
+ return FALSE;
+
+ if (strcmp (l->public_tok_value, r->public_tok_value))
+ return FALSE;
+ */
+ return TRUE;
+}
+
+/* assemblies_mutex must be held by the caller */
+static MonoAssembly*
+search_loaded (MonoAssemblyName* aname)
+{
+ GList *tmp;
+ MonoAssembly *ass;
+ GList *loading;
+
+ for (tmp = loaded_assemblies; tmp; tmp = tmp->next) {
+ ass = tmp->data;
+ /* g_print ("compare %s %s\n", aname->name, ass->aname.name); */
+ if (!mono_assembly_names_equal (aname, &ass->aname))
+ continue;
+ /* g_print ("success\n"); */
+
+ return ass;
+ }
+
+ /*
+ * The assembly might be under load by this thread. In this case, it is
+ * safe to return an incomplete instance to prevent loops.
+ */
+ loading = g_hash_table_lookup (assemblies_loading, GetCurrentThread ());
+ for (tmp = loading; tmp; tmp = tmp->next) {
+ ass = tmp->data;
+ if (!mono_assembly_names_equal (aname, &ass->aname))
+ continue;
+
+ return ass;
+ }
+
+ return NULL;
+}
+
+static MonoAssembly *
+load_in_path (const char *basename, const char** search_path, MonoImageOpenStatus *status)
+{
+ int i;
+ char *fullpath;
+ MonoAssembly *result;
+
+ for (i = 0; search_path [i]; ++i) {
+ fullpath = g_build_filename (search_path [i], basename, NULL);
+ result = mono_assembly_open (fullpath, status);
+ g_free (fullpath);
+ if (result)
+ return result;
+ }
+ return NULL;
+}
+
+/**
+ * mono_assembly_setrootdir:
+ * @root_dir: The pathname of the root directory where we will locate assemblies
+ *
+ * This routine sets the internal default root directory for looking up
+ * assemblies. This is used by Windows installations to compute dynamically
+ * the place where the Mono assemblies are located.
+ *
+ */
+void
+mono_assembly_setrootdir (const char *root_dir)
+{
+ /*
+ * Override the MONO_ASSEMBLIES directory configured at compile time.
+ */
+ /* Leak if called more than once */
+ default_path [0] = g_strdup (root_dir);
+}
+
+G_CONST_RETURN gchar *
+mono_assembly_getrootdir (void)
+{
+ return default_path [0];
+}
/**
- * g_concat_dir_and_file:
- * @dir: directory name
- * @file: filename.
+ * mono_assemblies_init:
*
- * returns a new allocated string that is the concatenation of dir and file,
- * takes care of the exact details for concatenating them.
+ * Initialize global variables used by this module.
*/
-static char *
-g_concat_dir_and_file (const char *dir, const char *file)
+void
+mono_assemblies_init (void)
{
- g_return_val_if_fail (dir != NULL, NULL);
- g_return_val_if_fail (file != NULL, NULL);
+#ifdef PLATFORM_WIN32
+ mono_set_rootdir ();
+#endif
- /*
- * If the directory name doesn't have a / on the end, we need
- * to add one so we get a proper path to the file
- */
- if (dir [strlen(dir) - 1] != G_DIR_SEPARATOR)
- return g_strconcat (dir, G_DIR_SEPARATOR_S, file, NULL);
+ check_path_env ();
+ check_extra_gac_path_env ();
+
+ InitializeCriticalSection (&assemblies_mutex);
+
+ assemblies_loading = g_hash_table_new (NULL, NULL);
+}
+
+gboolean
+mono_assembly_fill_assembly_name (MonoImage *image, MonoAssemblyName *aname)
+{
+ MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLY];
+ guint32 cols [MONO_ASSEMBLY_SIZE];
+
+ if (!t->rows)
+ return FALSE;
+
+ mono_metadata_decode_row (t, 0, cols, MONO_ASSEMBLY_SIZE);
+
+ aname->hash_len = 0;
+ aname->hash_value = NULL;
+ aname->name = mono_metadata_string_heap (image, cols [MONO_ASSEMBLY_NAME]);
+ aname->culture = mono_metadata_string_heap (image, cols [MONO_ASSEMBLY_CULTURE]);
+ aname->flags = cols [MONO_ASSEMBLY_FLAGS];
+ aname->major = cols [MONO_ASSEMBLY_MAJOR_VERSION];
+ aname->minor = cols [MONO_ASSEMBLY_MINOR_VERSION];
+ aname->build = cols [MONO_ASSEMBLY_BUILD_NUMBER];
+ aname->revision = cols [MONO_ASSEMBLY_REV_NUMBER];
+ aname->hash_alg = cols [MONO_ASSEMBLY_HASH_ALG];
+ if (cols [MONO_ASSEMBLY_PUBLIC_KEY])
+ aname->public_key = mono_metadata_blob_heap (image, cols [MONO_ASSEMBLY_PUBLIC_KEY]);
else
- return g_strconcat (dir, file, NULL);
+ aname->public_key = 0;
+
+ return TRUE;
}
-static char *
-default_assembly_name_resolver (const char *name)
+static gchar*
+assemblyref_public_tok (MonoImage *image, guint32 key_index, guint32 flags)
{
- char *file, *path;
+ const gchar *public_tok;
+ int len;
+
+ public_tok = mono_metadata_blob_heap (image, key_index);
+ len = mono_metadata_decode_blob_size (public_tok, &public_tok);
+
+ if (flags & ASSEMBLYREF_FULL_PUBLIC_KEY_FLAG) {
+ gchar token [8];
+ mono_digest_get_public_token (token, public_tok, len);
+ return encode_public_tok (token, 8);
+ }
+
+ return encode_public_tok (public_tok, len);
+}
+
+void
+mono_assembly_load_references (MonoImage *image, MonoImageOpenStatus *status)
+{
+ MonoTableInfo *t;
+ guint32 cols [MONO_ASSEMBLYREF_SIZE];
+ const char *hash;
+ int i;
+ MonoAssembly **references = NULL;
+
+ *status = MONO_IMAGE_OK;
+
+ /*
+ * image->references is shared between threads, so we need to access
+ * it inside a critical section.
+ */
+ EnterCriticalSection (&assemblies_mutex);
+ references = image->references;
+ LeaveCriticalSection (&assemblies_mutex);
+ if (references)
+ return;
+
+ t = &image->tables [MONO_TABLE_ASSEMBLYREF];
+
+ references = g_new0 (MonoAssembly *, t->rows + 1);
+
+ /*
+ * Load any assemblies this image references
+ */
+ for (i = 0; i < t->rows; i++) {
+ MonoAssemblyName aname;
+
+ mono_metadata_decode_row (t, i, cols, MONO_ASSEMBLYREF_SIZE);
+
+ hash = mono_metadata_blob_heap (image, cols [MONO_ASSEMBLYREF_HASH_VALUE]);
+ aname.hash_len = mono_metadata_decode_blob_size (hash, &hash);
+ aname.hash_value = hash;
+ aname.name = mono_metadata_string_heap (image, cols [MONO_ASSEMBLYREF_NAME]);
+ aname.culture = mono_metadata_string_heap (image, cols [MONO_ASSEMBLYREF_CULTURE]);
+ aname.flags = cols [MONO_ASSEMBLYREF_FLAGS];
+ aname.major = cols [MONO_ASSEMBLYREF_MAJOR_VERSION];
+ aname.minor = cols [MONO_ASSEMBLYREF_MINOR_VERSION];
+ aname.build = cols [MONO_ASSEMBLYREF_BUILD_NUMBER];
+ aname.revision = cols [MONO_ASSEMBLYREF_REV_NUMBER];
+
+ if (cols [MONO_ASSEMBLYREF_PUBLIC_KEY]) {
+ aname.public_tok_value = assemblyref_public_tok (image,
+ cols [MONO_ASSEMBLYREF_PUBLIC_KEY], aname.flags);
+ } else {
+ aname.public_tok_value = NULL;
+ }
+
+ references [i] = mono_assembly_load (&aname, image->assembly->basedir, status);
+
+ if (references [i] == NULL){
+ int j;
+
+ /*
+ ** Temporary work around: any System.* which are 3300 build, will get
+ ** remapped, this is to keep old applications running that might have
+ ** been linked against our 5000 API, before we were strongnamed, and
+ ** hence were labeled as 3300 builds by reflection.c
+ */
+ if (aname.build == 3300 && strncmp (aname.name, "System", 6) == 0){
+ aname.build = 5000;
+
+ references [i] = mono_assembly_load (&aname, image->assembly->basedir, status);
+ }
+ if (references [i] != NULL){
+ if (g_getenv ("MONO_SILENT_WARNING") == NULL)
+ g_printerr ("Compat mode: the request from %s to load %s was remapped (http://www.go-mono.com/remap.html)\n",
+ image->name, aname.name);
+
+ } else {
+
+ for (j = 0; j < i; j++)
+ mono_assembly_close (references [j]);
+ g_free (references);
+
+ g_warning ("Could not find assembly %s, references from %s (assemblyref_index=%d)\n"
+ " Major/Minor: %d,%d\n"
+ " Build: %d,%d\n"
+ " Token: %s\n",
+ aname.name, image->name, i,
+ aname.major, aname.minor, aname.build, aname.revision,
+ aname.public_tok_value);
+ *status = MONO_IMAGE_MISSING_ASSEMBLYREF;
+ return;
+ }
+ }
+
+ /*
+ * This check is disabled since lots of people seem to have an older
+ * corlib which triggers this.
+ */
+ /*
+ if (image->references [i]->image == image)
+ g_error ("Error: Assembly %s references itself", image->name);
+ */
+ }
+ references [i] = NULL;
+
+ /* resolve assembly references for modules */
+ t = &image->tables [MONO_TABLE_MODULEREF];
+ for (i = 0; i < t->rows; i++){
+ if (image->modules [i]) {
+ image->modules [i]->assembly = image->assembly;
+ mono_assembly_load_references (image->modules [i], status);
+ }
+ }
+
+ EnterCriticalSection (&assemblies_mutex);
+ if (!image->references)
+ image->references = references;
+ LeaveCriticalSection (&assemblies_mutex);
+
+ if (image->references != references) {
+ /* Somebody loaded it before us */
+ for (i = 0; i < t->rows; i++)
+ mono_assembly_close (references [i]);
+ g_free (references);
+ }
+}
+
+typedef struct AssemblyLoadHook AssemblyLoadHook;
+struct AssemblyLoadHook {
+ AssemblyLoadHook *next;
+ MonoAssemblyLoadFunc func;
+ gpointer user_data;
+};
+
+AssemblyLoadHook *assembly_load_hook = NULL;
+
+void
+mono_assembly_invoke_load_hook (MonoAssembly *ass)
+{
+ AssemblyLoadHook *hook;
+
+ for (hook = assembly_load_hook; hook; hook = hook->next) {
+ hook->func (ass, hook->user_data);
+ }
+}
+
+void
+mono_install_assembly_load_hook (MonoAssemblyLoadFunc func, gpointer user_data)
+{
+ AssemblyLoadHook *hook;
+
+ g_return_if_fail (func != NULL);
+
+ hook = g_new0 (AssemblyLoadHook, 1);
+ hook->func = func;
+ hook->user_data = user_data;
+ hook->next = assembly_load_hook;
+ assembly_load_hook = hook;
+}
+
+typedef struct AssemblyPreLoadHook AssemblyPreLoadHook;
+struct AssemblyPreLoadHook {
+ AssemblyPreLoadHook *next;
+ MonoAssemblyPreLoadFunc func;
+ gpointer user_data;
+};
+
+AssemblyPreLoadHook *assembly_preload_hook = NULL;
+
+static MonoAssembly *
+invoke_assembly_preload_hook (MonoAssemblyName *aname, gchar **assemblies_path)
+{
+ AssemblyPreLoadHook *hook;
+ MonoAssembly *assembly;
+
+ for (hook = assembly_preload_hook; hook; hook = hook->next) {
+ assembly = hook->func (aname, assemblies_path, hook->user_data);
+ if (assembly != NULL)
+ return assembly;
+ }
+
+ return NULL;
+}
+
+void
+mono_install_assembly_preload_hook (MonoAssemblyPreLoadFunc func, gpointer user_data)
+{
+ AssemblyPreLoadHook *hook;
+
+ g_return_if_fail (func != NULL);
+
+ hook = g_new0 (AssemblyPreLoadHook, 1);
+ hook->func = func;
+ hook->user_data = user_data;
+ hook->next = assembly_preload_hook;
+ assembly_preload_hook = hook;
+}
+
+static gchar *
+absolute_dir (const gchar *filename)
+{
+ gchar *cwd;
+ gchar *mixed;
+ gchar **parts;
+ gchar *part;
+ GList *list, *tmp;
+ GString *result;
+ gchar *res;
+ gint i;
+
+ if (g_path_is_absolute (filename))
+ return g_path_get_dirname (filename);
+
+ cwd = g_get_current_dir ();
+ mixed = g_build_filename (cwd, filename, NULL);
+ parts = g_strsplit (mixed, G_DIR_SEPARATOR_S, 0);
+ g_free (mixed);
+ g_free (cwd);
+
+ list = NULL;
+ for (i = 0; (part = parts [i]) != NULL; i++) {
+ if (!strcmp (part, "."))
+ continue;
+
+ if (!strcmp (part, "..")) {
+ if (list && list->next) /* Don't remove root */
+ list = g_list_delete_link (list, list);
+ } else {
+ list = g_list_prepend (list, part);
+ }
+ }
+
+ result = g_string_new ("");
+ list = g_list_reverse (list);
+
+ /* Ignores last data pointer, which should be the filename */
+ for (tmp = list; tmp && tmp->next != NULL; tmp = tmp->next)
+ if (tmp->data)
+ g_string_append_printf (result, "%s%c", (char *) tmp->data,
+ G_DIR_SEPARATOR);
- if ((strcmp (name, "mscorlib") == 0) ||
- (strcmp (name, "mscorlib.dll") == 0) ||
- (strcmp (name, "corlib.dll") == 0) ||
- (strcmp (name, "corlib") == 0))
- return g_concat_dir_and_file (MONO_ASSEMBLIES, CORLIB_NAME);
+ res = result->str;
+ g_string_free (result, FALSE);
+ g_list_free (list);
+ g_strfreev (parts);
+ if (*res == '\0') {
+ g_free (res);
+ return g_strdup (".");
+ }
- if (g_file_test (name, G_FILE_TEST_EXISTS))
- return g_strdup (name);
- path = g_concat_dir_and_file (MONO_ASSEMBLIES, name);
- if (g_file_test (path, G_FILE_TEST_EXISTS))
- return g_strdup (path);
- g_free (path);
- file = g_strconcat (name, ".dll", NULL);
- path = g_concat_dir_and_file (MONO_ASSEMBLIES, file);
- g_free (file);
+ return res;
+}
+
+static MonoImage*
+do_mono_assembly_open (const char *filename, MonoImageOpenStatus *status)
+{
+ MonoImage *image = NULL;
+#ifdef WITH_BUNDLE
+ int i;
+ char *name = g_path_get_basename (filename);
+ char *dot = strrchr (name, '.');
+ GList *tmp;
+ MonoAssembly *ass;
+
+ if (dot)
+ *dot = 0;
+ /* we do a very simple search for bundled assemblies: it's not a general
+ * purpose assembly loading mechanism.
+ */
+ EnterCriticalSection (&assemblies_mutex);
+ for (tmp = loaded_assemblies; tmp; tmp = tmp->next) {
+ ass = tmp->data;
+ if (!ass->aname.name)
+ continue;
+ if (strcmp (name, ass->aname.name))
+ continue;
+ image = ass->image;
+ break;
+ }
- return path;
+ for (i = 0; !image && bundled_assemblies [i]; ++i) {
+ if (strcmp (bundled_assemblies [i]->name, name) == 0) {
+ image = mono_image_open_from_data ((char*)bundled_assemblies [i]->data, bundled_assemblies [i]->size, FALSE, status);
+ break;
+ }
+ }
+ LeaveCriticalSection (&assemblies_mutex);
+ g_free (name);
+ if (image) {
+ mono_image_addref (image);
+ return image;
+ }
+#endif
+ EnterCriticalSection (&assemblies_mutex);
+ image = mono_image_open (filename, status);
+ LeaveCriticalSection (&assemblies_mutex);
+
+ return image;
}
/**
* mono_assembly_open:
* @filename: Opens the assembly pointed out by this name
- * @resolver: A user provided function to resolve assembly references
* @status: where a status code can be returned
*
* mono_assembly_open opens the PE-image pointed by @filename, and
* it.
*/
MonoAssembly *
-mono_assembly_open (const char *filename, MonoAssemblyResolverFn resolver,
- enum MonoImageOpenStatus *status)
+mono_assembly_open (const char *filename, MonoImageOpenStatus *status)
{
- MonoAssembly *ass;
MonoImage *image;
- MonoTableInfo *t;
- int i;
- char *fullname;
- const char *basename = strrchr (filename, G_DIR_SEPARATOR);
- static MonoAssembly *corlib;
+ MonoAssembly *ass;
+ MonoImageOpenStatus def_status;
+ gchar *fname;
g_return_val_if_fail (filename != NULL, NULL);
- if (assemblies == NULL)
- assemblies = g_hash_table_new (g_str_hash, g_str_equal);
+ if (!status)
+ status = &def_status;
+ *status = MONO_IMAGE_OK;
- if ((ass = g_hash_table_lookup (assemblies, filename)) != NULL){
- ass->ref_count++;
- return ass;
- }
+ if (strncmp (filename, "file://", 7) == 0) {
+ GError *error = NULL;
+ gchar *uri = (gchar *) filename;
+ gchar *tmpuri;
+
+ /*
+ * MS allows file://c:/... and fails on file://localhost/c:/...
+ * They also throw an IndexOutOfRangeException if "file://"
+ */
+ if (uri [7] != '/')
+ uri = g_strdup_printf ("file:///%s", uri + 7);
- if (basename == NULL)
- basename = filename;
- else
- basename++;
+ tmpuri = uri;
+ uri = mono_escape_uri_string (tmpuri);
+ fname = g_filename_from_uri (uri, NULL, &error);
+ g_free (uri);
- if (resolver == NULL)
- resolver = default_assembly_name_resolver;
+ if (tmpuri != filename)
+ g_free (tmpuri);
+ if (error != NULL) {
+ g_warning ("%s\n", error->message);
+ g_error_free (error);
+ fname = g_strdup (filename);
+ }
+ } else {
+ fname = g_strdup (filename);
+ }
- fullname = resolver (filename);
- image = mono_image_open (fullname, status);
+ /* g_print ("file loading %s\n", fname); */
+ image = do_mono_assembly_open (fname, status);
if (!image){
- if (status)
- *status = MONO_IMAGE_ERROR_ERRNO;
- g_free (fullname);
+ *status = MONO_IMAGE_ERROR_ERRNO;
+ g_free (fname);
return NULL;
}
- t = &image->tables [MONO_TABLE_ASSEMBLYREF];
+ ass = mono_assembly_load_from (image, fname, status);
+
+ mono_config_for_assembly (ass->image);
+
+ g_free (fname);
+
+ return ass;
+}
+
+MonoAssembly *
+mono_assembly_load_from (MonoImage *image, const char*fname,
+ MonoImageOpenStatus *status)
+{
+ MonoAssembly *ass, *ass2;
+ char *base_dir;
+ GList *loading;
+
+#if defined (PLATFORM_WIN32)
+ {
+ gchar *tmp_fn;
+ int i;
+
+ tmp_fn = g_strdup (fname);
+ for (i = strlen (tmp_fn) - 1; i >= 0; i--) {
+ if (tmp_fn [i] == '/')
+ tmp_fn [i] = '\\';
+ }
+
+ base_dir = absolute_dir (tmp_fn);
+ g_free (tmp_fn);
+ }
+#else
+ base_dir = absolute_dir (fname);
+#endif
- image->references = g_new0 (MonoAssembly *, t->rows + 1);
+ /*
+ * To avoid deadlocks and scalability problems, we load assemblies outside
+ * the assembly lock. This means that multiple threads might try to load
+ * the same assembly at the same time. The first one to load it completely
+ * "wins", the other threads free their copy and use the one loaded by
+ * the winning thread.
+ */
/*
* Create assembly struct, and enter it into the assembly cache
*/
- ass = g_new (MonoAssembly, 1);
- ass->name = fullname;
+ ass = g_new0 (MonoAssembly, 1);
+ ass->basedir = base_dir;
ass->image = image;
- g_hash_table_insert (assemblies, image->name, ass);
- g_hash_table_insert (assemblies, ass->name, ass);
-
+ mono_assembly_fill_assembly_name (image, &ass->aname);
+
+ /*
+ * Atomically search the loaded list and add ourselves to it if necessary.
+ */
+ EnterCriticalSection (&assemblies_mutex);
+ if (ass->aname.name)
+ /* avoid loading the same assembly twice for now... */
+ if ((ass2 = search_loaded (&ass->aname))) {
+ g_free (ass);
+ g_free (base_dir);
+ mono_image_close (image);
+ *status = MONO_IMAGE_OK;
+ LeaveCriticalSection (&assemblies_mutex);
+ return ass2;
+ }
+ loading = g_hash_table_lookup (assemblies_loading, GetCurrentThread ());
+ loading = g_list_prepend (loading, ass);
+ g_hash_table_insert (assemblies_loading, GetCurrentThread (), loading);
+ LeaveCriticalSection (&assemblies_mutex);
+
+ image->assembly = ass;
+
/*
- * Load any assemblies this image references
+ * We load referenced assemblies outside the lock to prevent deadlocks
+ * with regards to preload hooks.
*/
- for (i = 0; i < t->rows; i++){
- char *assembly_ref;
- const char *name;
- guint32 cols [MONO_ASSEMBLYREF_SIZE];
+ mono_assembly_load_references (image, status);
- mono_metadata_decode_row (t, i, cols, CSIZE (cols));
- name = mono_metadata_string_heap (image, cols [MONO_ASSEMBLYREF_NAME]);
+ EnterCriticalSection (&assemblies_mutex);
- /*
- * Special case until we have a passable corlib:
- *
- * ie, references to mscorlib from corlib.dll are ignored
- * and we do not load corlib twice.
- */
- if (strcmp (basename, CORLIB_NAME) == 0){
- if (corlib == NULL)
- corlib = ass;
-
- if (strcmp (name, "mscorlib") == 0)
- continue;
+ loading = g_hash_table_lookup (assemblies_loading, GetCurrentThread ());
+ loading = g_list_remove (loading, ass);
+ if (loading == NULL)
+ /* Prevent memory leaks */
+ g_hash_table_remove (assemblies_loading, GetCurrentThread ());
+ else
+ g_hash_table_insert (assemblies_loading, GetCurrentThread (), loading);
+ if (*status != MONO_IMAGE_OK) {
+ LeaveCriticalSection (&assemblies_mutex);
+ mono_assembly_close (ass);
+ return NULL;
+ }
+
+ if (ass->aname.name) {
+ ass2 = search_loaded (&ass->aname);
+ if (ass2) {
+ /* Somebody else has loaded the assembly before us */
+ LeaveCriticalSection (&assemblies_mutex);
+ mono_assembly_close (ass);
+ return ass2;
}
+ }
+
+ loaded_assemblies = g_list_prepend (loaded_assemblies, ass);
+ LeaveCriticalSection (&assemblies_mutex);
+
+ mono_assembly_invoke_load_hook (ass);
+
+ return ass;
+}
+
+static MonoAssembly*
+probe_for_partial_name (const char *basepath, const char *fullname, MonoImageOpenStatus *status)
+{
+ MonoAssembly *res = NULL;
+ gchar *fullpath;
+ GDir *dirhandle;
+ const char* direntry;
+
+ dirhandle = g_dir_open (basepath, 0, NULL);
+ if (!dirhandle)
+ return NULL;
+
+ while ((direntry = g_dir_read_name (dirhandle))) {
+ fullpath = g_build_path (G_DIR_SEPARATOR_S, basepath, direntry, fullname, NULL);
+ res = mono_assembly_open (fullpath, status);
+ g_free (fullpath);
+ if (res)
+ break;
+ }
+ g_dir_close (dirhandle);
+
+ return res;
+}
+
+MonoAssembly*
+mono_assembly_load_with_partial_name (const char *name, MonoImageOpenStatus *status)
+{
+ MonoAssembly *res;
+ MonoAssemblyName aname;
+ gchar *fullname, *gacpath;
+ gchar **paths;
+
+ memset (&aname, 0, sizeof (MonoAssemblyName));
+ aname.name = name;
+
+ res = mono_assembly_loaded (&aname);
+
+ if (res)
+ return res;
+
+ fullname = g_strdup_printf ("%s.dll", name);
+
+ if (extra_gac_paths) {
+ paths = extra_gac_paths;
+ while (!res && *paths) {
+ gacpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "gac", name, NULL);
+ res = probe_for_partial_name (gacpath, fullname, status);
+ g_free (gacpath);
+ paths++;
+ }
+ }
+
+ if (res) {
+ res->in_gac = TRUE;
+ g_free (fullname);
+ return res;
- assembly_ref = (*resolver) (name);
+ }
- image->references [i] = mono_assembly_open (assembly_ref, resolver, status);
+ gacpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (), "mono", "gac", name, NULL);
+ res = probe_for_partial_name (gacpath, fullname, status);
+ g_free (gacpath);
- if (image->references [i] == NULL){
- int j;
-
- for (j = 0; j < i; j++)
- mono_assembly_close (image->references [j]);
- g_free (image->references);
- mono_image_close (image);
+ if (res)
+ res->in_gac = TRUE;
- g_warning ("Could not find assembly %s %s", name, assembly_ref);
- g_free (assembly_ref);
- if (status)
- *status = MONO_IMAGE_MISSING_ASSEMBLYREF;
- g_free (ass);
- return NULL;
+ g_free (fullname);
+
+ return res;
+}
+
+/**
+ * mono_assembly_load_from_gac
+ *
+ * @aname: The assembly name object
+ */
+static MonoAssembly*
+mono_assembly_load_from_gac (MonoAssemblyName *aname, gchar *filename, MonoImageOpenStatus *status)
+{
+ MonoAssembly *result = NULL;
+ gchar *name, *version, *fullpath, *subpath;
+ gint32 len;
+ gchar **paths;
+
+ if (!aname->public_tok_value) {
+ return NULL;
+ }
+
+ if (strstr (aname->name, ".dll")) {
+ len = strlen (filename) - 4;
+ name = g_malloc (len);
+ strncpy (name, aname->name, len);
+ } else {
+ name = g_strdup (aname->name);
+ }
+
+ version = g_strdup_printf ("%d.%d.%d.%d_%s_%s", aname->major,
+ aname->minor, aname->build, aname->revision,
+ aname->culture == NULL ? "" : aname->culture,
+ aname->public_tok_value);
+
+ subpath = g_build_path (G_DIR_SEPARATOR_S, name, version, filename, NULL);
+ g_free (name);
+ g_free (version);
+
+ if (extra_gac_paths) {
+ paths = extra_gac_paths;
+ while (!result && *paths) {
+ fullpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "gac", subpath, NULL);
+ result = mono_assembly_open (fullpath, status);
+ g_free (fullpath);
+ paths++;
}
- g_free (assembly_ref);
}
- image->references [i] = NULL;
- return ass;
+ if (result) {
+ result->in_gac = TRUE;
+ g_free (subpath);
+ return result;
+ }
+
+ fullpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (),
+ "mono", "gac", subpath, NULL);
+ result = mono_assembly_open (fullpath, status);
+ g_free (fullpath);
+
+ if (result)
+ result->in_gac = TRUE;
+
+ g_free (subpath);
+
+ return result;
+}
+
+
+MonoAssembly*
+mono_assembly_load (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status)
+{
+ MonoAssembly *result;
+ char *fullpath, *filename;
+
+ result = invoke_assembly_preload_hook (aname, assemblies_path);
+ if (result)
+ return result;
+ /* g_print ("loading %s\n", aname->name); */
+ /* special case corlib */
+ if (strcmp (aname->name, "mscorlib") == 0) {
+ if (corlib) {
+ /* g_print ("corlib already loaded\n"); */
+ return corlib;
+ }
+ /* g_print ("corlib load\n"); */
+ if (assemblies_path) {
+ corlib = load_in_path ("mscorlib.dll", (const char**)assemblies_path, status);
+ if (corlib)
+ return corlib;
+ }
+ corlib = load_in_path ("mscorlib.dll", default_path, status);
+ return corlib;
+ }
+ result = search_loaded (aname);
+
+ if (result)
+ return result;
+ /* g_print ("%s not found in cache\n", aname->name); */
+ if (strstr (aname->name, ".dll"))
+ filename = g_strdup (aname->name);
+ else
+ filename = g_strconcat (aname->name, ".dll", NULL);
+
+ result = mono_assembly_load_from_gac (aname, filename, status);
+ if (result) {
+ g_free (filename);
+ return result;
+ }
+
+ if (basedir) {
+ fullpath = g_build_filename (basedir, filename, NULL);
+ result = mono_assembly_open (fullpath, status);
+ g_free (fullpath);
+ if (result) {
+ result->in_gac = FALSE;
+ g_free (filename);
+ return result;
+ }
+ }
+ if (assemblies_path) {
+ result = load_in_path (filename, (const char**)assemblies_path, status);
+ if (result) {
+ result->in_gac = FALSE;
+ g_free (filename);
+ return result;
+ }
+ }
+ result = load_in_path (filename, default_path, status);
+
+ if (result)
+ result->in_gac = FALSE;
+ g_free (filename);
+ return result;
+}
+
+MonoAssembly*
+mono_assembly_loaded (MonoAssemblyName *aname)
+{
+ MonoAssembly *res;
+
+ EnterCriticalSection (&assemblies_mutex);
+ res = search_loaded (aname);
+ LeaveCriticalSection (&assemblies_mutex);
+
+ return res;
}
void
g_return_if_fail (assembly != NULL);
- if (--assembly->ref_count != 0)
+ EnterCriticalSection (&assemblies_mutex);
+ if (--assembly->ref_count != 0) {
+ LeaveCriticalSection (&assemblies_mutex);
return;
-
+ }
+ loaded_assemblies = g_list_remove (loaded_assemblies, assembly);
+ LeaveCriticalSection (&assemblies_mutex);
image = assembly->image;
- for (i = 0; image->references [i] != NULL; i++)
- mono_image_close (image->references [i]->image);
- g_free (image->references);
-
+ if (image->references) {
+ for (i = 0; image->references [i] != NULL; i++)
+ mono_image_close (image->references [i]->image);
+ g_free (image->references);
+ }
+
mono_image_close (assembly->image);
- g_hash_table_remove (assemblies, assembly->name);
-
- g_free (assembly->name);
+ g_free (assembly->basedir);
g_free (assembly);
}
-/*
- * Temporary hack until we get AppDomains
+MonoImage*
+mono_assembly_load_module (MonoAssembly *assembly, guint32 idx)
+{
+ MonoImageOpenStatus status;
+ MonoImage *module;
+
+ module = mono_image_load_file_for_image (assembly->image, idx);
+ if (module)
+ mono_assembly_load_references (module, &status);
+
+ return module;
+}
+
+void
+mono_assembly_foreach (GFunc func, gpointer user_data)
+{
+ GList *copy;
+
+ /*
+ * We make a copy of the list to avoid calling the callback inside the
+ * lock, which could lead to deadlocks.
+ */
+ EnterCriticalSection (&assemblies_mutex);
+ copy = g_list_copy (loaded_assemblies);
+ LeaveCriticalSection (&assemblies_mutex);
+
+ g_list_foreach (loaded_assemblies, func, user_data);
+
+ g_list_free (copy);
+}
+
+/* Holds the assembly of the application, for
+ * System.Diagnostics.Process::MainModule
*/
-GHashTable *
-mono_get_assemblies ()
+static MonoAssembly *main_assembly=NULL;
+
+void
+mono_assembly_set_main (MonoAssembly *assembly)
+{
+ main_assembly=assembly;
+}
+
+MonoAssembly *
+mono_assembly_get_main (void)
{
- return assemblies;
+ return(main_assembly);
}
+
+
projects / mono.git / blobdiff