/* * assembly.c: Routines for loading assemblies. * * Author: * Miguel de Icaza (miguel@ximian.com) * * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com) * Copyright 2004-2009 Novell, Inc (http://www.novell.com) * Copyright 2011 Xamarin, Inc (http://www.xamarin.com) */ #include #include #include #include #include #include #include "assembly.h" #include "image.h" #include "object-internals.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef HOST_WIN32 #include #include #include #endif #ifdef PLATFORM_MACOSX #include #endif /* AssemblyVersionMap: an assembly name and the assembly version set on which it is based */ typedef struct { const char* assembly_name; guint8 version_set_index; } AssemblyVersionMap; /* the default search path is empty, the first slot is replaced with the computed value */ static const char* default_path [] = { NULL, NULL, NULL }; /* Contains the list of directories to be searched for assemblies (MONO_PATH) */ static char **assemblies_path = NULL; /* Contains the list of directories that point to auxiliary GACs */ static char **extra_gac_paths = NULL; #ifndef DISABLE_ASSEMBLY_REMAPPING /* The list of system assemblies what will be remapped to the running * runtime version. WARNING: this list must be sorted. * The integer number is an index in the MonoRuntimeInfo structure, whose * values can be found in domain.c - supported_runtimes. Look there * to understand what remapping will be made. */ static const AssemblyVersionMap framework_assemblies [] = { {"Accessibility", 0}, {"Commons.Xml.Relaxng", 0}, {"I18N", 0}, {"I18N.CJK", 0}, {"I18N.MidEast", 0}, {"I18N.Other", 0}, {"I18N.Rare", 0}, {"I18N.West", 0}, {"Microsoft.VisualBasic", 1}, {"Microsoft.VisualC", 1}, {"Mono.Cairo", 0}, {"Mono.CompilerServices.SymbolWriter", 0}, {"Mono.Data", 0}, {"Mono.Data.SybaseClient", 0}, {"Mono.Data.Tds", 0}, {"Mono.Data.TdsClient", 0}, {"Mono.GetOptions", 0}, {"Mono.Http", 0}, {"Mono.Posix", 0}, {"Mono.Security", 0}, {"Mono.Security.Win32", 0}, {"Mono.Xml.Ext", 0}, {"Novell.Directory.Ldap", 0}, {"Npgsql", 0}, {"PEAPI", 0}, {"System", 0}, {"System.ComponentModel.DataAnnotations", 2}, {"System.Configuration", 0}, {"System.Configuration.Install", 0}, {"System.Core", 2}, {"System.Data", 0}, {"System.Data.Linq", 2}, {"System.Data.OracleClient", 0}, {"System.Data.Services", 2}, {"System.Data.Services.Client", 2}, {"System.Data.SqlXml", 0}, {"System.Design", 0}, {"System.DirectoryServices", 0}, {"System.Drawing", 0}, {"System.Drawing.Design", 0}, {"System.EnterpriseServices", 0}, {"System.Management", 0}, {"System.Messaging", 0}, {"System.Net", 2}, {"System.Runtime.Remoting", 0}, {"System.Runtime.Serialization", 3}, {"System.Runtime.Serialization.Formatters.Soap", 0}, {"System.Security", 0}, {"System.ServiceModel.Web", 2}, {"System.ServiceProcess", 0}, {"System.Transactions", 0}, {"System.Web", 0}, {"System.Web.Abstractions", 2}, {"System.Web.DynamicData", 2}, {"System.Web.Extensions", 2}, {"System.Web.Mobile", 0}, {"System.Web.Routing", 2}, {"System.Web.Services", 0}, {"System.Windows.Forms", 0}, {"System.Xml", 0}, {"System.Xml.Linq", 2}, {"WindowsBase", 3}, {"mscorlib", 0} }; #endif /* * keeps track of loaded assemblies */ static GList *loaded_assemblies = NULL; static MonoAssembly *corlib; #if defined(__native_client__) /* On Native Client, allow mscorlib to be loaded from memory */ /* instead of loaded off disk. If these are not set, default */ /* mscorlib loading will take place */ /* NOTE: If mscorlib data is passed to mono in this way then */ /* it needs to remain allocated during the use of mono. */ static void *corlibData = NULL; static size_t corlibSize = 0; void mono_set_corlib_data (void *data, size_t size) { corlibData = data; corlibSize = size; } #endif /* This protects loaded_assemblies and image->references */ #define mono_assemblies_lock() EnterCriticalSection (&assemblies_mutex) #define mono_assemblies_unlock() LeaveCriticalSection (&assemblies_mutex) static CRITICAL_SECTION assemblies_mutex; /* If defined, points to the bundled assembly information */ const MonoBundledAssembly **bundles; static mono_mutex_t assembly_binding_mutex; /* Loaded assembly binding info */ static GSList *loaded_assembly_bindings = NULL; static MonoAssembly* mono_assembly_invoke_search_hook_internal (MonoAssemblyName *aname, gboolean refonly, gboolean postload); static MonoBoolean mono_assembly_is_in_gac (const gchar *filanem); static gchar* encode_public_tok (const guchar *token, gint32 len) { const 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; } /** * mono_public_tokens_are_equal: * @pubt1: first public key token * @pubt2: second public key token * * Compare two public key tokens and return #TRUE is they are equal and #FALSE * otherwise. */ gboolean mono_public_tokens_are_equal (const unsigned char *pubt1, const unsigned char *pubt2) { return memcmp (pubt1, pubt2, 16) == 0; } /** * mono_set_assemblies_path: * @path: list of paths that contain directories where Mono will look for assemblies * * Use this method to override the standard assembly lookup system and * override any assemblies coming from the GAC. This is the method * that supports the MONO_PATH variable. * * Notice that MONO_PATH and this method are really a very bad idea as * it prevents the GAC from working and it prevents the standard * resolution mechanisms from working. Nonetheless, for some debugging * situations and bootstrapping setups, this is useful to have. */ void mono_set_assemblies_path (const char* path) { char **splitted, **dest; splitted = g_strsplit (path, G_SEARCHPATH_SEPARATOR_S, 1000); if (assemblies_path) g_strfreev (assemblies_path); assemblies_path = dest = splitted; while (*splitted){ if (**splitted) *dest++ = *splitted; splitted++; } *dest = *splitted; if (g_getenv ("MONO_DEBUG") == NULL) return; splitted = assemblies_path; 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++; } } /* Native Client can't get this info from an environment variable so */ /* it's passed in to the runtime, or set manually by embedding code. */ #ifdef __native_client__ char* nacl_mono_path = NULL; #endif static void check_path_env (void) { const char* path; path = g_getenv ("MONO_PATH"); #ifdef __native_client__ if (!path) path = nacl_mono_path; #endif if (!path || assemblies_path != NULL) return; mono_set_assemblies_path(path); } static void check_extra_gac_path_env (void) { const char *path; char **splitted, **dest; path = g_getenv ("MONO_GAC_PREFIX"); if (!path) return; splitted = g_strsplit (path, G_SEARCHPATH_SEPARATOR_S, 1000); if (extra_gac_paths) g_strfreev (extra_gac_paths); extra_gac_paths = dest = splitted; while (*splitted){ if (**splitted) *dest++ = *splitted; splitted++; } *dest = *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_PREFIX doesn't exist or has wrong permissions.", *splitted); splitted++; } } static gboolean assembly_binding_maps_name (MonoAssemblyBindingInfo *info, MonoAssemblyName *aname) { if (!info || !info->name) return FALSE; if (strcmp (info->name, aname->name)) return FALSE; if (info->major != aname->major || info->minor != aname->minor) return FALSE; if ((info->culture != NULL && info->culture [0]) != (aname->culture != NULL && aname->culture [0])) return FALSE; if (info->culture && aname->culture && strcmp (info->culture, aname->culture)) return FALSE; if (!mono_public_tokens_are_equal (info->public_key_token, aname->public_key_token)) return FALSE; return TRUE; } static void mono_assembly_binding_info_free (MonoAssemblyBindingInfo *info) { if (!info) return; g_free (info->name); g_free (info->culture); } static void get_publisher_policy_info (MonoImage *image, MonoAssemblyName *aname, MonoAssemblyBindingInfo *binding_info) { MonoTableInfo *t; guint32 cols [MONO_MANIFEST_SIZE]; const gchar *filename; gchar *subpath, *fullpath; t = &image->tables [MONO_TABLE_MANIFESTRESOURCE]; /* MS Impl. accepts policy assemblies with more than * one manifest resource, and only takes the first one */ if (t->rows < 1) { binding_info->is_valid = FALSE; return; } mono_metadata_decode_row (t, 0, cols, MONO_MANIFEST_SIZE); if ((cols [MONO_MANIFEST_IMPLEMENTATION] & MONO_IMPLEMENTATION_MASK) != MONO_IMPLEMENTATION_FILE) { binding_info->is_valid = FALSE; return; } filename = mono_metadata_string_heap (image, cols [MONO_MANIFEST_NAME]); g_assert (filename != NULL); subpath = g_path_get_dirname (image->name); fullpath = g_build_path (G_DIR_SEPARATOR_S, subpath, filename, NULL); mono_config_parse_publisher_policy (fullpath, binding_info); g_free (subpath); g_free (fullpath); /* Define the optional elements/attributes before checking */ if (!binding_info->culture) binding_info->culture = g_strdup (""); /* Check that the most important elements/attributes exist */ if (!binding_info->name || !binding_info->public_key_token [0] || !binding_info->has_old_version_bottom || !binding_info->has_new_version || !assembly_binding_maps_name (binding_info, aname)) { mono_assembly_binding_info_free (binding_info); binding_info->is_valid = FALSE; return; } binding_info->is_valid = TRUE; } static int compare_versions (AssemblyVersionSet *v, MonoAssemblyName *aname) { if (v->major > aname->major) return 1; else if (v->major < aname->major) return -1; if (v->minor > aname->minor) return 1; else if (v->minor < aname->minor) return -1; if (v->build > aname->build) return 1; else if (v->build < aname->build) return -1; if (v->revision > aname->revision) return 1; else if (v->revision < aname->revision) return -1; return 0; } static gboolean check_policy_versions (MonoAssemblyBindingInfo *info, MonoAssemblyName *name) { if (!info->is_valid) return FALSE; /* If has_old_version_top doesn't exist, we don't have an interval */ if (!info->has_old_version_top) { if (compare_versions (&info->old_version_bottom, name) == 0) return TRUE; return FALSE; } /* Check that the version defined by name is valid for the interval */ if (compare_versions (&info->old_version_top, name) < 0) return FALSE; /* We should be greater or equal than the small version */ if (compare_versions (&info->old_version_bottom, name) > 0) return FALSE; return TRUE; } /** * mono_assembly_names_equal: * @l: first assembly * @r: second assembly. * * Compares two MonoAssemblyNames and returns whether they are equal. * * This compares the names, the cultures, the release version and their * public tokens. * * Returns: TRUE if both assembly names are equal. */ gboolean mono_assembly_names_equal (MonoAssemblyName *l, MonoAssemblyName *r) { if (!l->name || !r->name) return FALSE; if (strcmp (l->name, r->name)) return FALSE; if (l->culture && r->culture && strcmp (l->culture, r->culture)) return FALSE; if (l->major != r->major || l->minor != r->minor || l->build != r->build || l->revision != r->revision) 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))) return FALSE; if (!l->public_key_token [0] || !r->public_key_token [0]) return TRUE; if (!mono_public_tokens_are_equal (l->public_key_token, r->public_key_token)) return FALSE; return TRUE; } static MonoAssembly * load_in_path (const char *basename, const char** search_path, MonoImageOpenStatus *status, MonoBoolean refonly) { 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_full (fullpath, status, refonly); 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); } /** * mono_assembly_getrootdir: * * Obtains the root directory used for looking up assemblies. * * Returns: a string with the directory, this string should not be freed. */ G_CONST_RETURN gchar * mono_assembly_getrootdir (void) { return default_path [0]; } /** * mono_set_dirs: * @assembly_dir: the base directory for assemblies * @config_dir: the base directory for configuration files * * This routine is used internally and by developers embedding * the runtime into their own applications. * * There are a number of cases to consider: Mono as a system-installed * package that is available on the location preconfigured or Mono in * a relocated location. * * If you are using a system-installed Mono, you can pass NULL * to both parameters. If you are not, you should compute both * directory values and call this routine. * * The values for a given PREFIX are: * * assembly_dir: PREFIX/lib * config_dir: PREFIX/etc * * Notice that embedders that use Mono in a relocated way must * compute the location at runtime, as they will be in control * of where Mono is installed. */ void mono_set_dirs (const char *assembly_dir, const char *config_dir) { #if defined (MONO_ASSEMBLIES) if (assembly_dir == NULL) assembly_dir = MONO_ASSEMBLIES; #endif #if defined (MONO_CFG_DIR) if (config_dir == NULL) config_dir = MONO_CFG_DIR; #endif mono_assembly_setrootdir (assembly_dir); mono_set_config_dir (config_dir); } #ifndef HOST_WIN32 static char * compute_base (char *path) { char *p = strrchr (path, '/'); if (p == NULL) return NULL; /* Not a well known Mono executable, we are embedded, cant guess the base */ if (strcmp (p, "/mono") && strcmp (p, "/mono-sgen") && strcmp (p, "/pedump") && strcmp (p, "/monodis") && strcmp (p, "/mint") && strcmp (p, "/monodiet")) return NULL; *p = 0; p = strrchr (path, '/'); if (p == NULL) return NULL; if (strcmp (p, "/bin") != 0) return NULL; *p = 0; return path; } static void fallback (void) { mono_set_dirs (MONO_ASSEMBLIES, MONO_CFG_DIR); } static G_GNUC_UNUSED void set_dirs (char *exe) { char *base; char *config, *lib, *mono; struct stat buf; /* * Only /usr prefix is treated specially */ if (strncmp (exe, MONO_BINDIR, strlen (MONO_BINDIR)) == 0 || (base = compute_base (exe)) == NULL){ fallback (); return; } config = g_build_filename (base, "etc", NULL); lib = g_build_filename (base, "lib", NULL); mono = g_build_filename (lib, "mono/2.0", NULL); if (stat (mono, &buf) == -1) fallback (); else { mono_set_dirs (lib, config); } g_free (config); g_free (lib); g_free (mono); } #endif /* HOST_WIN32 */ /** * mono_set_rootdir: * * Registers the root directory for the Mono runtime, for Linux and Solaris 10, * this auto-detects the prefix where Mono was installed. */ void mono_set_rootdir (void) { #if defined(HOST_WIN32) || (defined(PLATFORM_MACOSX) && !defined(TARGET_ARM)) gchar *bindir, *installdir, *root, *name, *resolvedname, *config; #ifdef HOST_WIN32 name = mono_get_module_file_name ((HMODULE) &__ImageBase); #else { /* * _NSGetExecutablePath may return -1 to indicate buf is not large * enough, but we ignore that case to avoid having to do extra dynamic * allocation for the path and hope that 4096 is enough - this is * ok in the Linux/Solaris case below at least... */ gchar buf[4096]; guint buf_size = sizeof (buf); name = NULL; if (_NSGetExecutablePath (buf, &buf_size) == 0) name = g_strdup (buf); if (name == NULL) { fallback (); return; } } #endif resolvedname = mono_path_resolve_symlinks (name); bindir = g_path_get_dirname (resolvedname); installdir = g_path_get_dirname (bindir); root = g_build_path (G_DIR_SEPARATOR_S, installdir, "lib", NULL); config = g_build_filename (root, "..", "etc", NULL); #ifdef HOST_WIN32 mono_set_dirs (root, config); #else if (g_file_test (root, G_FILE_TEST_EXISTS) && g_file_test (config, G_FILE_TEST_EXISTS)) mono_set_dirs (root, config); else fallback (); #endif g_free (config); g_free (root); g_free (installdir); g_free (bindir); g_free (name); g_free (resolvedname); #elif defined(DISABLE_MONO_AUTODETECTION) fallback (); #else char buf [4096]; int s; char *str; /* Linux style */ s = readlink ("/proc/self/exe", buf, sizeof (buf)-1); if (s != -1){ buf [s] = 0; set_dirs (buf); return; } /* Solaris 10 style */ str = g_strdup_printf ("/proc/%d/path/a.out", getpid ()); s = readlink (str, buf, sizeof (buf)-1); g_free (str); if (s != -1){ buf [s] = 0; set_dirs (buf); return; } fallback (); #endif } /** * mono_assemblies_init: * * Initialize global variables used by this module. */ void mono_assemblies_init (void) { /* * Initialize our internal paths if we have not been initialized yet. * This happens when embedders use Mono. */ if (mono_assembly_getrootdir () == NULL) mono_set_rootdir (); check_path_env (); check_extra_gac_path_env (); InitializeCriticalSection (&assemblies_mutex); mono_mutex_init (&assembly_binding_mutex); } static void mono_assembly_binding_lock (void) { mono_locks_mutex_acquire (&assembly_binding_mutex, AssemblyBindingLock); } static void mono_assembly_binding_unlock (void) { mono_locks_mutex_release (&assembly_binding_mutex, AssemblyBindingLock); } gboolean mono_assembly_fill_assembly_name (MonoImage *image, MonoAssemblyName *aname) { MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLY]; guint32 cols [MONO_ASSEMBLY_SIZE]; gint32 machine, flags; 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]) { guchar* token = g_malloc (8); gchar* encoded; const gchar* pkey; int len; pkey = mono_metadata_blob_heap (image, cols [MONO_ASSEMBLY_PUBLIC_KEY]); len = mono_metadata_decode_blob_size (pkey, &pkey); aname->public_key = (guchar*)pkey; mono_digest_get_public_token (token, aname->public_key, len); encoded = encode_public_tok (token, 8); g_strlcpy ((char*)aname->public_key_token, encoded, MONO_PUBLIC_KEY_TOKEN_LENGTH); g_free (encoded); g_free (token); } else { aname->public_key = NULL; memset (aname->public_key_token, 0, MONO_PUBLIC_KEY_TOKEN_LENGTH); } if (cols [MONO_ASSEMBLY_PUBLIC_KEY]) { aname->public_key = (guchar*)mono_metadata_blob_heap (image, cols [MONO_ASSEMBLY_PUBLIC_KEY]); } else aname->public_key = 0; machine = ((MonoCLIImageInfo*)(image->image_info))->cli_header.coff.coff_machine; flags = ((MonoCLIImageInfo*)(image->image_info))->cli_cli_header.ch_flags; switch (machine) { case COFF_MACHINE_I386: /* https://bugzilla.xamarin.com/show_bug.cgi?id=17632 */ if (flags & (CLI_FLAGS_32BITREQUIRED|CLI_FLAGS_PREFERRED32BIT)) aname->arch = MONO_PROCESSOR_ARCHITECTURE_X86; else if ((flags & 0x70) == 0x70) aname->arch = MONO_PROCESSOR_ARCHITECTURE_NONE; else aname->arch = MONO_PROCESSOR_ARCHITECTURE_MSIL; break; case COFF_MACHINE_IA64: aname->arch = MONO_PROCESSOR_ARCHITECTURE_IA64; break; case COFF_MACHINE_AMD64: aname->arch = MONO_PROCESSOR_ARCHITECTURE_AMD64; break; case COFF_MACHINE_ARM: aname->arch = MONO_PROCESSOR_ARCHITECTURE_ARM; break; default: break; } return TRUE; } /** * mono_stringify_assembly_name: * @aname: the assembly name. * * Convert @aname into its string format. The returned string is dynamically * allocated and should be freed by the caller. * * Returns: a newly allocated string with a string representation of * the assembly name. */ char* mono_stringify_assembly_name (MonoAssemblyName *aname) { const char *quote = (aname->name && g_ascii_isspace (aname->name [0])) ? "\"" : ""; return g_strdup_printf ( "%s%s%s, Version=%d.%d.%d.%d, Culture=%s, PublicKeyToken=%s%s", quote, aname->name, quote, aname->major, aname->minor, aname->build, aname->revision, aname->culture && *aname->culture? aname->culture: "neutral", aname->public_key_token [0] ? (char *)aname->public_key_token : "null", (aname->flags & ASSEMBLYREF_RETARGETABLE_FLAG) ? ", Retargetable=Yes" : ""); } static gchar* assemblyref_public_tok (MonoImage *image, guint32 key_index, guint32 flags) { 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) { guchar token [8]; mono_digest_get_public_token (token, (guchar*)public_tok, len); return encode_public_tok (token, 8); } return encode_public_tok ((guchar*)public_tok, len); } /** * mono_assembly_addref: * @assemnly: the assembly to reference * * This routine increments the reference count on a MonoAssembly. * The reference count is reduced every time the method mono_assembly_close() is * invoked. */ void mono_assembly_addref (MonoAssembly *assembly) { InterlockedIncrement (&assembly->ref_count); } /* * CAUTION: This table must be kept in sync with * ivkm/reflect/Fusion.cs */ #define SILVERLIGHT_KEY "7cec85d7bea7798e" #define WINFX_KEY "31bf3856ad364e35" #define ECMA_KEY "b77a5c561934e089" #define MSFINAL_KEY "b03f5f7f11d50a3a" typedef struct { const char *name; const char *from; const char *to; } KeyRemapEntry; static KeyRemapEntry key_remap_table[] = { { "Microsoft.CSharp", WINFX_KEY, MSFINAL_KEY }, { "System", SILVERLIGHT_KEY, ECMA_KEY }, { "System.ComponentModel.Composition", WINFX_KEY, ECMA_KEY }, { "System.ComponentModel.DataAnnotations", "ddd0da4d3e678217", WINFX_KEY }, { "System.Core", SILVERLIGHT_KEY, ECMA_KEY }, // FIXME: MS uses MSFINAL_KEY for .NET 4.5 { "System.Net", SILVERLIGHT_KEY, MSFINAL_KEY }, { "System.Numerics", WINFX_KEY, ECMA_KEY }, { "System.Runtime.Serialization", SILVERLIGHT_KEY, ECMA_KEY }, { "System.ServiceModel", WINFX_KEY, ECMA_KEY }, { "System.ServiceModel.Web", SILVERLIGHT_KEY, WINFX_KEY }, { "System.Windows", SILVERLIGHT_KEY, MSFINAL_KEY }, { "System.Xml", SILVERLIGHT_KEY, ECMA_KEY }, { "System.Xml.Linq", WINFX_KEY, ECMA_KEY }, { "System.Xml.Serialization", WINFX_KEY, ECMA_KEY } }; static void remap_keys (MonoAssemblyName *aname) { int i; for (i = 0; i < G_N_ELEMENTS (key_remap_table); i++) { const KeyRemapEntry *entry = &key_remap_table [i]; if (strcmp (aname->name, entry->name) || !mono_public_tokens_are_equal (aname->public_key_token, (const unsigned char*) entry->from)) continue; memcpy (aname->public_key_token, entry->to, MONO_PUBLIC_KEY_TOKEN_LENGTH); mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Remapped public key token of retargetable assembly %s from %s to %s", aname->name, entry->from, entry->to); return; } } static MonoAssemblyName * mono_assembly_remap_version (MonoAssemblyName *aname, MonoAssemblyName *dest_aname) { const MonoRuntimeInfo *current_runtime; int pos, first, last; if (aname->name == NULL) return aname; current_runtime = mono_get_runtime_info (); if (aname->flags & ASSEMBLYREF_RETARGETABLE_FLAG) { const AssemblyVersionSet* vset; /* Remap to current runtime */ vset = ¤t_runtime->version_sets [0]; memcpy (dest_aname, aname, sizeof(MonoAssemblyName)); dest_aname->major = vset->major; dest_aname->minor = vset->minor; dest_aname->build = vset->build; dest_aname->revision = vset->revision; dest_aname->flags &= ~ASSEMBLYREF_RETARGETABLE_FLAG; /* Remap assembly name */ if (!strcmp (aname->name, "System.Net")) dest_aname->name = g_strdup ("System"); remap_keys (dest_aname); mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "The request to load the retargetable assembly %s v%d.%d.%d.%d was remapped to %s v%d.%d.%d.%d", aname->name, aname->major, aname->minor, aname->build, aname->revision, dest_aname->name, vset->major, vset->minor, vset->build, vset->revision ); return dest_aname; } #ifndef DISABLE_ASSEMBLY_REMAPPING first = 0; last = G_N_ELEMENTS (framework_assemblies) - 1; while (first <= last) { int res; pos = first + (last - first) / 2; res = strcmp (aname->name, framework_assemblies[pos].assembly_name); if (res == 0) { const AssemblyVersionSet* vset; int index = framework_assemblies[pos].version_set_index; g_assert (index < G_N_ELEMENTS (current_runtime->version_sets)); vset = ¤t_runtime->version_sets [index]; if (aname->major == vset->major && aname->minor == vset->minor && aname->build == vset->build && aname->revision == vset->revision) return aname; if ((aname->major | aname->minor | aname->build | aname->revision) != 0) mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_ASSEMBLY, "The request to load the assembly %s v%d.%d.%d.%d was remapped to v%d.%d.%d.%d", aname->name, aname->major, aname->minor, aname->build, aname->revision, vset->major, vset->minor, vset->build, vset->revision ); memcpy (dest_aname, aname, sizeof(MonoAssemblyName)); dest_aname->major = vset->major; dest_aname->minor = vset->minor; dest_aname->build = vset->build; dest_aname->revision = vset->revision; return dest_aname; } else if (res < 0) { last = pos - 1; } else { first = pos + 1; } } #endif return aname; } /* * mono_assembly_get_assemblyref: * * Fill out ANAME with the assembly name of the INDEXth assembly reference in IMAGE. */ void mono_assembly_get_assemblyref (MonoImage *image, int index, MonoAssemblyName *aname) { MonoTableInfo *t; guint32 cols [MONO_ASSEMBLYREF_SIZE]; const char *hash; t = &image->tables [MONO_TABLE_ASSEMBLYREF]; mono_metadata_decode_row (t, index, 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]) { gchar *token = assemblyref_public_tok (image, cols [MONO_ASSEMBLYREF_PUBLIC_KEY], aname->flags); g_strlcpy ((char*)aname->public_key_token, token, MONO_PUBLIC_KEY_TOKEN_LENGTH); g_free (token); } else { memset (aname->public_key_token, 0, MONO_PUBLIC_KEY_TOKEN_LENGTH); } } void mono_assembly_load_reference (MonoImage *image, int index) { MonoAssembly *reference; MonoAssemblyName aname; MonoImageOpenStatus status; /* * image->references is shared between threads, so we need to access * it inside a critical section. */ mono_assemblies_lock (); if (!image->references) { MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLYREF]; image->references = g_new0 (MonoAssembly *, t->rows + 1); image->nreferences = t->rows; } reference = image->references [index]; mono_assemblies_unlock (); if (reference) return; mono_assembly_get_assemblyref (image, index, &aname); if (image->assembly && image->assembly->ref_only) { /* We use the loaded corlib */ if (!strcmp (aname.name, "mscorlib")) reference = mono_assembly_load_full (&aname, image->assembly->basedir, &status, FALSE); else { reference = mono_assembly_loaded_full (&aname, TRUE); if (!reference) /* Try a postload search hook */ reference = mono_assembly_invoke_search_hook_internal (&aname, TRUE, TRUE); } /* * Here we must advice that the error was due to * a non loaded reference using the ReflectionOnly api */ if (!reference) reference = REFERENCE_MISSING; } else reference = mono_assembly_load (&aname, image->assembly? image->assembly->basedir: NULL, &status); if (reference == NULL){ char *extra_msg; if (status == MONO_IMAGE_ERROR_ERRNO && errno == ENOENT) { 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 != NULL ? image->assembly->basedir : "" ); } else if (status == MONO_IMAGE_ERROR_ERRNO) { extra_msg = g_strdup_printf ("System error: %s\n", strerror (errno)); } else if (status == MONO_IMAGE_MISSING_ASSEMBLYREF) { extra_msg = g_strdup ("Cannot find an assembly referenced from this one.\n"); } else if (status == MONO_IMAGE_IMAGE_INVALID) { extra_msg = g_strdup ("The file exists but is not a valid assembly.\n"); } else { extra_msg = g_strdup (""); } mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_ASSEMBLY, "The following assembly referenced from %s could not be loaded:\n" " Assembly: %s (assemblyref_index=%d)\n" " Version: %d.%d.%d.%d\n" " Public Key: %s\n%s", image->name, aname.name, index, aname.major, aname.minor, aname.build, aname.revision, strlen ((char*)aname.public_key_token) == 0 ? "(none)" : (char*)aname.public_key_token, extra_msg); g_free (extra_msg); } mono_assemblies_lock (); if (reference == NULL) { /* Flag as not found */ reference = REFERENCE_MISSING; } if (!image->references [index]) { if (reference != REFERENCE_MISSING){ mono_assembly_addref (reference); if (image->assembly) mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly Ref addref %s[%p] -> %s[%p]: %d", image->assembly->aname.name, image->assembly, reference->aname.name, reference, reference->ref_count); } else { if (image->assembly) mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Failed to load assembly %s[%p]\n", image->assembly->aname.name, image->assembly); } image->references [index] = reference; } mono_assemblies_unlock (); if (image->references [index] != reference) { /* Somebody loaded it before us */ mono_assembly_close (reference); } } void mono_assembly_load_references (MonoImage *image, MonoImageOpenStatus *status) { /* This is a no-op now but it is part of the embedding API so we can't remove it */ *status = MONO_IMAGE_OK; } 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; } static void free_assembly_load_hooks (void) { AssemblyLoadHook *hook, *next; for (hook = assembly_load_hook; hook; hook = next) { next = hook->next; g_free (hook); } } typedef struct AssemblySearchHook AssemblySearchHook; struct AssemblySearchHook { AssemblySearchHook *next; MonoAssemblySearchFunc func; gboolean refonly; gboolean postload; gpointer user_data; }; AssemblySearchHook *assembly_search_hook = NULL; static MonoAssembly* mono_assembly_invoke_search_hook_internal (MonoAssemblyName *aname, gboolean refonly, gboolean postload) { AssemblySearchHook *hook; for (hook = assembly_search_hook; hook; hook = hook->next) { if ((hook->refonly == refonly) && (hook->postload == postload)) { MonoAssembly *ass = hook->func (aname, hook->user_data); if (ass) return ass; } } return NULL; } MonoAssembly* mono_assembly_invoke_search_hook (MonoAssemblyName *aname) { return mono_assembly_invoke_search_hook_internal (aname, FALSE, FALSE); } static void mono_install_assembly_search_hook_internal (MonoAssemblySearchFunc func, gpointer user_data, gboolean refonly, gboolean postload) { AssemblySearchHook *hook; g_return_if_fail (func != NULL); hook = g_new0 (AssemblySearchHook, 1); hook->func = func; hook->user_data = user_data; hook->refonly = refonly; hook->postload = postload; hook->next = assembly_search_hook; assembly_search_hook = hook; } void mono_install_assembly_search_hook (MonoAssemblySearchFunc func, gpointer user_data) { mono_install_assembly_search_hook_internal (func, user_data, FALSE, FALSE); } static void free_assembly_search_hooks (void) { AssemblySearchHook *hook, *next; for (hook = assembly_search_hook; hook; hook = next) { next = hook->next; g_free (hook); } } void mono_install_assembly_refonly_search_hook (MonoAssemblySearchFunc func, gpointer user_data) { mono_install_assembly_search_hook_internal (func, user_data, TRUE, FALSE); } void mono_install_assembly_postload_search_hook (MonoAssemblySearchFunc func, gpointer user_data) { mono_install_assembly_search_hook_internal (func, user_data, FALSE, TRUE); } void mono_install_assembly_postload_refonly_search_hook (MonoAssemblySearchFunc func, gpointer user_data) { mono_install_assembly_search_hook_internal (func, user_data, TRUE, TRUE); } typedef struct AssemblyPreLoadHook AssemblyPreLoadHook; struct AssemblyPreLoadHook { AssemblyPreLoadHook *next; MonoAssemblyPreLoadFunc func; gpointer user_data; }; static AssemblyPreLoadHook *assembly_preload_hook = NULL; static AssemblyPreLoadHook *assembly_refonly_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; } static MonoAssembly * invoke_assembly_refonly_preload_hook (MonoAssemblyName *aname, gchar **assemblies_path) { AssemblyPreLoadHook *hook; MonoAssembly *assembly; for (hook = assembly_refonly_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; } void mono_install_assembly_refonly_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_refonly_preload_hook; assembly_refonly_preload_hook = hook; } static void free_assembly_preload_hooks (void) { AssemblyPreLoadHook *hook, *next; for (hook = assembly_preload_hook; hook; hook = next) { next = hook->next; g_free (hook); } for (hook = assembly_refonly_preload_hook; hook; hook = next) { next = hook->next; g_free (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)) { part = g_path_get_dirname (filename); res = g_strconcat (part, G_DIR_SEPARATOR_S, NULL); g_free (part); return res; } 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); } res = result->str; g_string_free (result, FALSE); g_list_free (list); g_strfreev (parts); if (*res == '\0') { g_free (res); return g_strdup ("."); } return res; } /** * mono_assembly_open_from_bundle: * @filename: Filename requested * @status: return value * * This routine tries to open the assembly specified by `filename' from the * defined bundles, if found, returns the MonoImage for it, if not found * returns NULL */ MonoImage * mono_assembly_open_from_bundle (const char *filename, MonoImageOpenStatus *status, gboolean refonly) { int i; char *name; MonoImage *image = NULL; /* * we do a very simple search for bundled assemblies: it's not a general * purpose assembly loading mechanism. */ if (!bundles) return NULL; name = g_path_get_basename (filename); mono_assemblies_lock (); for (i = 0; !image && bundles [i]; ++i) { if (strcmp (bundles [i]->name, name) == 0) { image = mono_image_open_from_data_with_name ((char*)bundles [i]->data, bundles [i]->size, FALSE, status, refonly, name); break; } } mono_assemblies_unlock (); g_free (name); if (image) { mono_image_addref (image); return image; } return NULL; } MonoAssembly * mono_assembly_open_full (const char *filename, MonoImageOpenStatus *status, gboolean refonly) { MonoImage *image; MonoAssembly *ass; MonoImageOpenStatus def_status; gchar *fname; gchar *new_fname; g_return_val_if_fail (filename != NULL, NULL); if (!status) status = &def_status; *status = MONO_IMAGE_OK; 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); tmpuri = uri; uri = mono_escape_uri_string (tmpuri); fname = g_filename_from_uri (uri, NULL, &error); g_free (uri); 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); } mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly Loader probing location: '%s'.", fname); new_fname = NULL; if (!mono_assembly_is_in_gac (fname)) new_fname = mono_make_shadow_copy (fname); if (new_fname && new_fname != fname) { g_free (fname); fname = new_fname; mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly Loader shadow-copied assembly to: '%s'.", fname); } image = NULL; if (bundles != NULL) image = mono_assembly_open_from_bundle (fname, status, refonly); if (!image) image = mono_image_open_full (fname, status, refonly); if (!image){ if (*status == MONO_IMAGE_OK) *status = MONO_IMAGE_ERROR_ERRNO; g_free (fname); return NULL; } if (image->assembly) { /* Already loaded by another appdomain */ mono_assembly_invoke_load_hook (image->assembly); mono_image_close (image); g_free (fname); return image->assembly; } ass = mono_assembly_load_from_full (image, fname, status, refonly); if (ass) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly Loader loaded assembly from location: '%s'.", filename); if (!refonly) mono_config_for_assembly (ass->image); } /* Clear the reference added by mono_image_open */ mono_image_close (image); g_free (fname); return ass; } static void free_item (gpointer val, gpointer user_data) { g_free (val); } /* * mono_assembly_load_friends: * @ass: an assembly * * Load the list of friend assemblies that are allowed to access * the assembly's internal types and members. They are stored as assembly * names in custom attributes. * * This is an internal method, we need this because when we load mscorlib * we do not have the mono_defaults.internals_visible_class loaded yet, * so we need to load these after we initialize the runtime. * * LOCKING: Acquires the assemblies lock plus the loader lock. */ void mono_assembly_load_friends (MonoAssembly* ass) { int i; MonoCustomAttrInfo* attrs; GSList *list; if (ass->friend_assembly_names_inited) return; attrs = mono_custom_attrs_from_assembly (ass); if (!attrs) { mono_assemblies_lock (); ass->friend_assembly_names_inited = TRUE; mono_assemblies_unlock (); return; } mono_assemblies_lock (); if (ass->friend_assembly_names_inited) { mono_assemblies_unlock (); return; } mono_assemblies_unlock (); list = NULL; /* * We build the list outside the assemblies lock, the worse that can happen * is that we'll need to free the allocated list. */ for (i = 0; i < attrs->num_attrs; ++i) { MonoCustomAttrEntry *attr = &attrs->attrs [i]; MonoAssemblyName *aname; const gchar *data; guint slen; /* Do some sanity checking */ if (!attr->ctor || attr->ctor->klass != mono_defaults.internals_visible_class) continue; if (attr->data_size < 4) continue; data = (const char*)attr->data; /* 0xFF means null string, see custom attr format */ if (data [0] != 1 || data [1] != 0 || (data [2] & 0xFF) == 0xFF) continue; slen = mono_metadata_decode_value (data + 2, &data); aname = g_new0 (MonoAssemblyName, 1); /*g_print ("friend ass: %s\n", data);*/ if (mono_assembly_name_parse_full (data, aname, TRUE, NULL, NULL)) { list = g_slist_prepend (list, aname); } else { g_free (aname); } } mono_custom_attrs_free (attrs); mono_assemblies_lock (); if (ass->friend_assembly_names_inited) { mono_assemblies_unlock (); g_slist_foreach (list, free_item, NULL); g_slist_free (list); return; } ass->friend_assembly_names = list; /* Because of the double checked locking pattern above */ mono_memory_barrier (); ass->friend_assembly_names_inited = TRUE; mono_assemblies_unlock (); } /** * mono_assembly_open: * @filename: Opens the assembly pointed out by this name * @status: where a status code can be returned * * mono_assembly_open opens the PE-image pointed by @filename, and * loads any external assemblies referenced by it. * * Return: a pointer to the MonoAssembly if @filename contains a valid * assembly or NULL on error. Details about the error are stored in the * @status variable. */ MonoAssembly * mono_assembly_open (const char *filename, MonoImageOpenStatus *status) { return mono_assembly_open_full (filename, status, FALSE); } MonoAssembly * mono_assembly_load_from_full (MonoImage *image, const char*fname, MonoImageOpenStatus *status, gboolean refonly) { MonoAssembly *ass, *ass2; char *base_dir; if (!image->tables [MONO_TABLE_ASSEMBLY].rows) { /* 'image' doesn't have a manifest -- maybe someone is trying to Assembly.Load a .netmodule */ *status = MONO_IMAGE_IMAGE_INVALID; return NULL; } #if defined (HOST_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 /* * Create assembly struct, and enter it into the assembly cache */ ass = g_new0 (MonoAssembly, 1); ass->basedir = base_dir; ass->ref_only = refonly; ass->image = image; mono_profiler_assembly_event (ass, MONO_PROFILE_START_LOAD); mono_assembly_fill_assembly_name (image, &ass->aname); if (mono_defaults.corlib && strcmp (ass->aname.name, "mscorlib") == 0) { // MS.NET doesn't support loading other mscorlibs g_free (ass); g_free (base_dir); mono_image_addref (mono_defaults.corlib); *status = MONO_IMAGE_OK; return mono_defaults.corlib->assembly; } /* Add a non-temporary reference because of ass->image */ mono_image_addref (image); mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Image addref %s[%p] -> %s[%p]: %d", ass->aname.name, ass, image->name, image, image->ref_count); /* * The load hooks might take locks so we can't call them while holding the * assemblies lock. */ if (ass->aname.name) { ass2 = mono_assembly_invoke_search_hook_internal (&ass->aname, refonly, FALSE); if (ass2) { g_free (ass); g_free (base_dir); mono_image_close (image); *status = MONO_IMAGE_OK; return ass2; } } mono_assemblies_lock (); if (image->assembly) { /* * This means another thread has already loaded the assembly, but not yet * called the load hooks so the search hook can't find the assembly. */ mono_assemblies_unlock (); ass2 = image->assembly; g_free (ass); g_free (base_dir); mono_image_close (image); *status = MONO_IMAGE_OK; return ass2; } image->assembly = ass; loaded_assemblies = g_list_prepend (loaded_assemblies, ass); mono_assemblies_unlock (); #ifdef HOST_WIN32 if (image->is_module_handle) mono_image_fixup_vtable (image); #endif mono_assembly_invoke_load_hook (ass); mono_profiler_assembly_loaded (ass, MONO_PROFILE_OK); return ass; } MonoAssembly * mono_assembly_load_from (MonoImage *image, const char *fname, MonoImageOpenStatus *status) { return mono_assembly_load_from_full (image, fname, status, FALSE); } /** * mono_assembly_name_free: * @aname: assembly name to free * * Frees the provided assembly name object. * (it does not frees the object itself, only the name members). */ void mono_assembly_name_free (MonoAssemblyName *aname) { if (aname == NULL) return; g_free ((void *) aname->name); g_free ((void *) aname->culture); g_free ((void *) aname->hash_value); } static gboolean parse_public_key (const gchar *key, gchar** pubkey, gboolean *is_ecma) { const gchar *pkey; gchar header [16], val, *arr; gint i, j, offset, bitlen, keylen, pkeylen; keylen = strlen (key) >> 1; if (keylen < 1) return FALSE; /* allow the ECMA standard key */ if (strcmp (key, "00000000000000000400000000000000") == 0) { if (pubkey) { *pubkey = g_strdup (key); *is_ecma = TRUE; } return TRUE; } *is_ecma = FALSE; val = g_ascii_xdigit_value (key [0]) << 4; val |= g_ascii_xdigit_value (key [1]); switch (val) { case 0x00: if (keylen < 13) return FALSE; val = g_ascii_xdigit_value (key [24]); val |= g_ascii_xdigit_value (key [25]); if (val != 0x06) return FALSE; pkey = key + 24; break; case 0x06: pkey = key; break; default: return FALSE; } /* We need the first 16 bytes * to check whether this key is valid or not */ pkeylen = strlen (pkey) >> 1; if (pkeylen < 16) return FALSE; for (i = 0, j = 0; i < 16; i++) { header [i] = g_ascii_xdigit_value (pkey [j++]) << 4; header [i] |= g_ascii_xdigit_value (pkey [j++]); } if (header [0] != 0x06 || /* PUBLICKEYBLOB (0x06) */ header [1] != 0x02 || /* Version (0x02) */ header [2] != 0x00 || /* Reserved (word) */ header [3] != 0x00 || (guint)(read32 (header + 8)) != 0x31415352) /* DWORD magic = RSA1 */ return FALSE; /* Based on this length, we _should_ be able to know if the length is right */ bitlen = read32 (header + 12) >> 3; if ((bitlen + 16 + 4) != pkeylen) return FALSE; /* parsing is OK and the public key itself is not requested back */ if (!pubkey) return TRUE; /* Encode the size of the blob */ offset = 0; if (keylen <= 127) { arr = g_malloc (keylen + 1); arr [offset++] = keylen; } else { arr = g_malloc (keylen + 2); arr [offset++] = 0x80; /* 10bs */ arr [offset++] = keylen; } for (i = offset, j = 0; i < keylen + offset; i++) { arr [i] = g_ascii_xdigit_value (key [j++]) << 4; arr [i] |= g_ascii_xdigit_value (key [j++]); } *pubkey = arr; return TRUE; } static gboolean build_assembly_name (const char *name, const char *version, const char *culture, const char *token, const char *key, guint32 flags, guint32 arch, MonoAssemblyName *aname, gboolean save_public_key) { gint major, minor, build, revision; gint len; gint version_parts; gchar *pkey, *pkeyptr, *encoded, tok [8]; memset (aname, 0, sizeof (MonoAssemblyName)); if (version) { version_parts = sscanf (version, "%u.%u.%u.%u", &major, &minor, &build, &revision); if (version_parts < 2 || version_parts > 4) return FALSE; /* FIXME: we should set build & revision to -1 (instead of 0) if these are not set in the version string. That way, later on, we can still determine if these were specified. */ aname->major = major; aname->minor = minor; if (version_parts >= 3) aname->build = build; else aname->build = 0; if (version_parts == 4) aname->revision = revision; else aname->revision = 0; } aname->flags = flags; aname->arch = arch; aname->name = g_strdup (name); if (culture) { if (g_ascii_strcasecmp (culture, "neutral") == 0) aname->culture = g_strdup (""); else aname->culture = g_strdup (culture); } if (token && strncmp (token, "null", 4) != 0) { char *lower; /* the constant includes the ending NULL, hence the -1 */ if (strlen (token) != (MONO_PUBLIC_KEY_TOKEN_LENGTH - 1)) { mono_assembly_name_free (aname); return FALSE; } lower = g_ascii_strdown (token, MONO_PUBLIC_KEY_TOKEN_LENGTH); g_strlcpy ((char*)aname->public_key_token, lower, MONO_PUBLIC_KEY_TOKEN_LENGTH); g_free (lower); } if (key) { gboolean is_ecma; if (strcmp (key, "null") == 0 || !parse_public_key (key, &pkey, &is_ecma)) { mono_assembly_name_free (aname); return FALSE; } if (is_ecma) { if (save_public_key) aname->public_key = (guint8*)pkey; else g_free (pkey); g_strlcpy ((gchar*)aname->public_key_token, "b77a5c561934e089", MONO_PUBLIC_KEY_TOKEN_LENGTH); return TRUE; } len = mono_metadata_decode_blob_size ((const gchar *) pkey, (const gchar **) &pkeyptr); // We also need to generate the key token mono_digest_get_public_token ((guchar*) tok, (guint8*) pkeyptr, len); encoded = encode_public_tok ((guchar*) tok, 8); g_strlcpy ((gchar*)aname->public_key_token, encoded, MONO_PUBLIC_KEY_TOKEN_LENGTH); g_free (encoded); if (save_public_key) aname->public_key = (guint8*) pkey; else g_free (pkey); } return TRUE; } static gboolean parse_assembly_directory_name (const char *name, const char *dirname, MonoAssemblyName *aname) { gchar **parts; gboolean res; parts = g_strsplit (dirname, "_", 3); if (!parts || !parts[0] || !parts[1] || !parts[2]) { g_strfreev (parts); return FALSE; } res = build_assembly_name (name, parts[0], parts[1], parts[2], NULL, 0, 0, aname, FALSE); g_strfreev (parts); return res; } static gboolean split_key_value (const gchar *pair, gchar **key, guint32 *keylen, gchar **value) { char *eqsign = strchr (pair, '='); if (!eqsign) { *key = NULL; *keylen = 0; *value = NULL; return FALSE; } *key = (gchar*)pair; *keylen = eqsign - *key; while (*keylen > 0 && g_ascii_isspace ((*key) [*keylen - 1])) (*keylen)--; *value = g_strstrip (eqsign + 1); return TRUE; } gboolean mono_assembly_name_parse_full (const char *name, MonoAssemblyName *aname, gboolean save_public_key, gboolean *is_version_defined, gboolean *is_token_defined) { gchar *dllname; gchar *version = NULL; gchar *culture = NULL; gchar *token = NULL; gchar *key = NULL; gchar *retargetable = NULL; gboolean res; gchar *value, *part_name; guint32 part_name_len; gchar **parts; gchar **tmp; gboolean version_defined; gboolean token_defined; guint32 flags = 0; guint32 arch = MONO_PROCESSOR_ARCHITECTURE_NONE; if (!is_version_defined) is_version_defined = &version_defined; *is_version_defined = FALSE; if (!is_token_defined) is_token_defined = &token_defined; *is_token_defined = FALSE; parts = tmp = g_strsplit (name, ",", 6); if (!tmp || !*tmp) { g_strfreev (tmp); return FALSE; } dllname = g_strstrip (*tmp); tmp++; while (*tmp) { if (!split_key_value (g_strstrip (*tmp), &part_name, &part_name_len, &value)) goto cleanup_and_fail; if (part_name_len == 7 && !g_ascii_strncasecmp (part_name, "Version", part_name_len)) { *is_version_defined = TRUE; version = value; if (strlen (version) == 0) { goto cleanup_and_fail; } tmp++; continue; } if (part_name_len == 7 && !g_ascii_strncasecmp (part_name, "Culture", part_name_len)) { culture = value; if (strlen (culture) == 0) { goto cleanup_and_fail; } tmp++; continue; } if (part_name_len == 14 && !g_ascii_strncasecmp (part_name, "PublicKeyToken", part_name_len)) { *is_token_defined = TRUE; token = value; if (strlen (token) == 0) { goto cleanup_and_fail; } tmp++; continue; } if (part_name_len == 9 && !g_ascii_strncasecmp (part_name, "PublicKey", part_name_len)) { key = value; if (strlen (key) == 0) { goto cleanup_and_fail; } tmp++; continue; } if (part_name_len == 12 && !g_ascii_strncasecmp (part_name, "Retargetable", part_name_len)) { retargetable = value; if (strlen (retargetable) == 0) { goto cleanup_and_fail; } if (!g_ascii_strcasecmp (retargetable, "yes")) { flags |= ASSEMBLYREF_RETARGETABLE_FLAG; } else if (g_ascii_strcasecmp (retargetable, "no")) { goto cleanup_and_fail; } tmp++; continue; } if (part_name_len == 21 && !g_ascii_strncasecmp (part_name, "ProcessorArchitecture", part_name_len)) { if (!g_ascii_strcasecmp (value, "None")) arch = MONO_PROCESSOR_ARCHITECTURE_NONE; else if (!g_ascii_strcasecmp (value, "MSIL")) arch = MONO_PROCESSOR_ARCHITECTURE_MSIL; else if (!g_ascii_strcasecmp (value, "X86")) arch = MONO_PROCESSOR_ARCHITECTURE_X86; else if (!g_ascii_strcasecmp (value, "IA64")) arch = MONO_PROCESSOR_ARCHITECTURE_IA64; else if (!g_ascii_strcasecmp (value, "AMD64")) arch = MONO_PROCESSOR_ARCHITECTURE_AMD64; else goto cleanup_and_fail; tmp++; continue; } g_strfreev (parts); return FALSE; } /* if retargetable flag is set, then we must have a fully qualified name */ if (retargetable != NULL && (version == NULL || culture == NULL || (key == NULL && token == NULL))) { goto cleanup_and_fail; } res = build_assembly_name (dllname, version, culture, token, key, flags, arch, aname, save_public_key); g_strfreev (parts); return res; cleanup_and_fail: g_strfreev (parts); return FALSE; } /** * mono_assembly_name_parse: * @name: name to parse * @aname: the destination assembly name * * Parses an assembly qualified type name and assigns the name, * version, culture and token to the provided assembly name object. * * Returns: true if the name could be parsed. */ gboolean mono_assembly_name_parse (const char *name, MonoAssemblyName *aname) { return mono_assembly_name_parse_full (name, aname, FALSE, NULL, NULL); } /** * mono_assembly_name_new: * @name: name to parse * * Allocate a new MonoAssemblyName and fill its values from the * passed @name. * * Returns: a newly allocated structure or NULL if there was any failure. */ MonoAssemblyName* mono_assembly_name_new (const char *name) { MonoAssemblyName *aname = g_new0 (MonoAssemblyName, 1); if (mono_assembly_name_parse (name, aname)) return aname; g_free (aname); return NULL; } const char* mono_assembly_name_get_name (MonoAssemblyName *aname) { return aname->name; } const char* mono_assembly_name_get_culture (MonoAssemblyName *aname) { return aname->culture; } mono_byte* mono_assembly_name_get_pubkeytoken (MonoAssemblyName *aname) { if (aname->public_key_token [0]) return aname->public_key_token; return NULL; } uint16_t mono_assembly_name_get_version (MonoAssemblyName *aname, uint16_t *minor, uint16_t *build, uint16_t *revision) { if (minor) *minor = aname->minor; if (build) *build = aname->build; if (revision) *revision = aname->revision; return aname->major; } static MonoAssembly* probe_for_partial_name (const char *basepath, const char *fullname, MonoAssemblyName *aname, MonoImageOpenStatus *status) { gchar *fullpath = NULL; GDir *dirhandle; const char* direntry; MonoAssemblyName gac_aname; gint major=-1, minor=0, build=0, revision=0; gboolean exact_version; dirhandle = g_dir_open (basepath, 0, NULL); if (!dirhandle) return NULL; exact_version = (aname->major | aname->minor | aname->build | aname->revision) != 0; while ((direntry = g_dir_read_name (dirhandle))) { gboolean match = TRUE; if(!parse_assembly_directory_name (aname->name, direntry, &gac_aname)) continue; if (aname->culture != NULL && strcmp (aname->culture, gac_aname.culture) != 0) match = FALSE; if (match && strlen ((char*)aname->public_key_token) > 0 && !mono_public_tokens_are_equal (aname->public_key_token, gac_aname.public_key_token)) match = FALSE; if (match) { if (exact_version) { match = (aname->major == gac_aname.major && aname->minor == gac_aname.minor && aname->build == gac_aname.build && aname->revision == gac_aname.revision); } else if (gac_aname.major < major) match = FALSE; else if (gac_aname.major == major) { if (gac_aname.minor < minor) match = FALSE; else if (gac_aname.minor == minor) { if (gac_aname.build < build) match = FALSE; else if (gac_aname.build == build && gac_aname.revision <= revision) match = FALSE; } } } if (match) { major = gac_aname.major; minor = gac_aname.minor; build = gac_aname.build; revision = gac_aname.revision; g_free (fullpath); fullpath = g_build_path (G_DIR_SEPARATOR_S, basepath, direntry, fullname, NULL); } mono_assembly_name_free (&gac_aname); } g_dir_close (dirhandle); if (fullpath == NULL) return NULL; else { MonoAssembly *res = mono_assembly_open (fullpath, status); g_free (fullpath); return res; } } MonoAssembly* mono_assembly_load_with_partial_name (const char *name, MonoImageOpenStatus *status) { MonoAssembly *res; MonoAssemblyName *aname, base_name; MonoAssemblyName mapped_aname; gchar *fullname, *gacpath; gchar **paths; memset (&base_name, 0, sizeof (MonoAssemblyName)); aname = &base_name; if (!mono_assembly_name_parse (name, aname)) return NULL; /* * If no specific version has been requested, make sure we load the * correct version for system assemblies. */ if ((aname->major | aname->minor | aname->build | aname->revision) == 0) aname = mono_assembly_remap_version (aname, &mapped_aname); res = mono_assembly_loaded (aname); if (res) { mono_assembly_name_free (aname); return res; } res = invoke_assembly_preload_hook (aname, assemblies_path); if (res) { res->in_gac = FALSE; mono_assembly_name_free (aname); return res; } fullname = g_strdup_printf ("%s.dll", aname->name); if (extra_gac_paths) { paths = extra_gac_paths; while (!res && *paths) { gacpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "lib", "mono", "gac", aname->name, NULL); res = probe_for_partial_name (gacpath, fullname, aname, status); g_free (gacpath); paths++; } } if (res) { res->in_gac = TRUE; g_free (fullname); mono_assembly_name_free (aname); return res; } gacpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (), "mono", "gac", aname->name, NULL); res = probe_for_partial_name (gacpath, fullname, aname, status); g_free (gacpath); if (res) res->in_gac = TRUE; else { MonoDomain *domain = mono_domain_get (); MonoReflectionAssembly *refasm = mono_try_assembly_resolve (domain, mono_string_new (domain, name), FALSE); if (refasm) res = refasm->assembly; } g_free (fullname); mono_assembly_name_free (aname); return res; } static MonoBoolean mono_assembly_is_in_gac (const gchar *filename) { const gchar *rootdir; gchar *gp; gchar **paths; if (filename == NULL) return FALSE; for (paths = extra_gac_paths; paths && *paths; paths++) { if (strstr (*paths, filename) != *paths) continue; gp = (gchar *) (filename + strlen (*paths)); if (*gp != G_DIR_SEPARATOR) continue; gp++; if (strncmp (gp, "lib", 3)) continue; gp += 3; if (*gp != G_DIR_SEPARATOR) continue; gp++; if (strncmp (gp, "mono", 4)) continue; gp += 4; if (*gp != G_DIR_SEPARATOR) continue; gp++; if (strncmp (gp, "gac", 3)) continue; gp += 3; if (*gp != G_DIR_SEPARATOR) continue; return TRUE; } rootdir = mono_assembly_getrootdir (); if (strstr (filename, rootdir) != filename) return FALSE; gp = (gchar *) (filename + strlen (rootdir)); if (*gp != G_DIR_SEPARATOR) return FALSE; gp++; if (strncmp (gp, "mono", 4)) return FALSE; gp += 4; if (*gp != G_DIR_SEPARATOR) return FALSE; gp++; if (strncmp (gp, "gac", 3)) return FALSE; gp += 3; if (*gp != G_DIR_SEPARATOR) return FALSE; return TRUE; } static MonoImage* mono_assembly_load_publisher_policy (MonoAssemblyName *aname) { MonoImage *image; gchar *filename, *pname, *name, *culture, *version, *fullpath, *subpath; gchar **paths; gint32 len; if (strstr (aname->name, ".dll")) { len = strlen (aname->name) - 4; name = g_malloc (len); strncpy (name, aname->name, len); } else name = g_strdup (aname->name); if (aname->culture) culture = g_utf8_strdown (aname->culture, -1); else culture = g_strdup (""); pname = g_strdup_printf ("policy.%d.%d.%s", aname->major, aname->minor, name); version = g_strdup_printf ("0.0.0.0_%s_%s", culture, aname->public_key_token); g_free (name); g_free (culture); filename = g_strconcat (pname, ".dll", NULL); subpath = g_build_path (G_DIR_SEPARATOR_S, pname, version, filename, NULL); g_free (pname); g_free (version); g_free (filename); image = NULL; if (extra_gac_paths) { paths = extra_gac_paths; while (!image && *paths) { fullpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "lib", "mono", "gac", subpath, NULL); image = mono_image_open (fullpath, NULL); g_free (fullpath); paths++; } } if (image) { g_free (subpath); return image; } fullpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (), "mono", "gac", subpath, NULL); image = mono_image_open (fullpath, NULL); g_free (subpath); g_free (fullpath); return image; } static MonoAssemblyName* mono_assembly_bind_version (MonoAssemblyBindingInfo *info, MonoAssemblyName *aname, MonoAssemblyName *dest_name) { memcpy (dest_name, aname, sizeof (MonoAssemblyName)); dest_name->major = info->new_version.major; dest_name->minor = info->new_version.minor; dest_name->build = info->new_version.build; dest_name->revision = info->new_version.revision; return dest_name; } /* LOCKING: assembly_binding lock must be held */ static MonoAssemblyBindingInfo* search_binding_loaded (MonoAssemblyName *aname) { GSList *tmp; for (tmp = loaded_assembly_bindings; tmp; tmp = tmp->next) { MonoAssemblyBindingInfo *info = tmp->data; if (assembly_binding_maps_name (info, aname)) return info; } return NULL; } static inline gboolean info_compare_versions (AssemblyVersionSet *left, AssemblyVersionSet *right) { if (left->major != right->major || left->minor != right->minor || left->build != right->build || left->revision != right->revision) return FALSE; return TRUE; } static inline gboolean info_versions_equal (MonoAssemblyBindingInfo *left, MonoAssemblyBindingInfo *right) { if (left->has_old_version_bottom != right->has_old_version_bottom) return FALSE; if (left->has_old_version_top != right->has_old_version_top) return FALSE; if (left->has_new_version != right->has_new_version) return FALSE; if (left->has_old_version_bottom && !info_compare_versions (&left->old_version_bottom, &right->old_version_bottom)) return FALSE; if (left->has_old_version_top && !info_compare_versions (&left->old_version_top, &right->old_version_top)) return FALSE; if (left->has_new_version && !info_compare_versions (&left->new_version, &right->new_version)) return FALSE; return TRUE; } /* LOCKING: assumes all the necessary locks are held */ static void assembly_binding_info_parsed (MonoAssemblyBindingInfo *info, void *user_data) { MonoAssemblyBindingInfo *info_copy; GSList *tmp; MonoAssemblyBindingInfo *info_tmp; MonoDomain *domain = (MonoDomain*)user_data; if (!domain) return; for (tmp = domain->assembly_bindings; tmp; tmp = tmp->next) { info_tmp = tmp->data; if (strcmp (info->name, info_tmp->name) == 0 && info_versions_equal (info, info_tmp)) return; } info_copy = mono_mempool_alloc0 (domain->mp, sizeof (MonoAssemblyBindingInfo)); memcpy (info_copy, info, sizeof (MonoAssemblyBindingInfo)); if (info->name) info_copy->name = mono_mempool_strdup (domain->mp, info->name); if (info->culture) info_copy->culture = mono_mempool_strdup (domain->mp, info->culture); domain->assembly_bindings = g_slist_append_mempool (domain->mp, domain->assembly_bindings, info_copy); } static int get_version_number (int major, int minor) { return major * 256 + minor; } static inline gboolean info_major_minor_in_range (MonoAssemblyBindingInfo *info, MonoAssemblyName *aname) { int aname_version_number = get_version_number (aname->major, aname->minor); if (!info->has_old_version_bottom) return FALSE; if (get_version_number (info->old_version_bottom.major, info->old_version_bottom.minor) > aname_version_number) return FALSE; if (info->has_old_version_top && get_version_number (info->old_version_top.major, info->old_version_top.minor) < aname_version_number) return FALSE; /* This is not the nicest way to do it, but it's a by-product of the way parsing is done */ info->major = aname->major; info->minor = aname->minor; return TRUE; } /* LOCKING: Assumes that we are already locked - both loader and domain locks */ static MonoAssemblyBindingInfo* get_per_domain_assembly_binding_info (MonoDomain *domain, MonoAssemblyName *aname) { MonoAssemblyBindingInfo *info; GSList *list; if (!domain->assembly_bindings) return NULL; info = NULL; for (list = domain->assembly_bindings; list; list = list->next) { info = list->data; if (info && !strcmp (aname->name, info->name) && info_major_minor_in_range (info, aname)) break; info = NULL; } if (info) { if (info->name && info->public_key_token [0] && info->has_old_version_bottom && info->has_new_version && assembly_binding_maps_name (info, aname)) info->is_valid = TRUE; else info->is_valid = FALSE; } return info; } static MonoAssemblyName* mono_assembly_apply_binding (MonoAssemblyName *aname, MonoAssemblyName *dest_name) { MonoAssemblyBindingInfo *info, *info2; MonoImage *ppimage; MonoDomain *domain; if (aname->public_key_token [0] == 0) return aname; domain = mono_domain_get (); mono_assembly_binding_lock (); info = search_binding_loaded (aname); mono_assembly_binding_unlock (); if (!info) { mono_domain_lock (domain); info = get_per_domain_assembly_binding_info (domain, aname); mono_domain_unlock (domain); } if (info) { if (!check_policy_versions (info, aname)) return aname; mono_assembly_bind_version (info, aname, dest_name); return dest_name; } if (domain && domain->setup && domain->setup->configuration_file) { mono_domain_lock (domain); if (!domain->assembly_bindings_parsed) { gchar *domain_config_file_name = mono_string_to_utf8 (domain->setup->configuration_file); gchar *domain_config_file_path = mono_portability_find_file (domain_config_file_name, TRUE); if (!domain_config_file_path) domain_config_file_path = domain_config_file_name; mono_config_parse_assembly_bindings (domain_config_file_path, aname->major, aname->minor, domain, assembly_binding_info_parsed); domain->assembly_bindings_parsed = TRUE; if (domain_config_file_name != domain_config_file_path) g_free (domain_config_file_name); g_free (domain_config_file_path); } info2 = get_per_domain_assembly_binding_info (domain, aname); if (info2) { info = g_memdup (info2, sizeof (MonoAssemblyBindingInfo)); info->name = g_strdup (info2->name); info->culture = g_strdup (info2->culture); info->domain_id = domain->domain_id; } mono_domain_unlock (domain); } if (!info) { info = g_new0 (MonoAssemblyBindingInfo, 1); info->major = aname->major; info->minor = aname->minor; } if (!info->is_valid) { ppimage = mono_assembly_load_publisher_policy (aname); if (ppimage) { get_publisher_policy_info (ppimage, aname, info); mono_image_close (ppimage); } } /* Define default error value if needed */ if (!info->is_valid) { info->name = g_strdup (aname->name); info->culture = g_strdup (aname->culture); g_strlcpy ((char *)info->public_key_token, (const char *)aname->public_key_token, MONO_PUBLIC_KEY_TOKEN_LENGTH); } mono_assembly_binding_lock (); info2 = search_binding_loaded (aname); if (info2) { /* This binding was added by another thread * before us */ mono_assembly_binding_info_free (info); g_free (info); info = info2; } else loaded_assembly_bindings = g_slist_prepend (loaded_assembly_bindings, info); mono_assembly_binding_unlock (); if (!info->is_valid || !check_policy_versions (info, aname)) return aname; mono_assembly_bind_version (info, aname, dest_name); return dest_name; } /** * mono_assembly_load_from_gac * * @aname: The assembly name object */ static MonoAssembly* mono_assembly_load_from_gac (MonoAssemblyName *aname, gchar *filename, MonoImageOpenStatus *status, MonoBoolean refonly) { MonoAssembly *result = NULL; gchar *name, *version, *culture, *fullpath, *subpath; gint32 len; gchar **paths; char *pubtok; if (aname->public_key_token [0] == 0) { 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); } if (aname->culture) { culture = g_utf8_strdown (aname->culture, -1); } else { culture = g_strdup (""); } pubtok = g_ascii_strdown ((char*)aname->public_key_token, MONO_PUBLIC_KEY_TOKEN_LENGTH); version = g_strdup_printf ("%d.%d.%d.%d_%s_%s", aname->major, aname->minor, aname->build, aname->revision, culture, pubtok); g_free (pubtok); subpath = g_build_path (G_DIR_SEPARATOR_S, name, version, filename, NULL); g_free (name); g_free (version); g_free (culture); if (extra_gac_paths) { paths = extra_gac_paths; while (!result && *paths) { fullpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "lib", "mono", "gac", subpath, NULL); result = mono_assembly_open_full (fullpath, status, refonly); g_free (fullpath); paths++; } } 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_full (fullpath, status, refonly); g_free (fullpath); if (result) result->in_gac = TRUE; g_free (subpath); return result; } MonoAssembly* mono_assembly_load_corlib (const MonoRuntimeInfo *runtime, MonoImageOpenStatus *status) { char *corlib_file; MonoAssemblyName *aname; if (corlib) { /* g_print ("corlib already loaded\n"); */ return corlib; } #if defined(__native_client__) if (corlibData != NULL && corlibSize != 0) { int status = 0; /* First "FALSE" instructs mono not to make a copy. */ /* Second "FALSE" says this is not just a ref. */ MonoImage* image = mono_image_open_from_data_full (corlibData, corlibSize, FALSE, &status, FALSE); if (image == NULL || status != 0) g_print("mono_image_open_from_data_full failed: %d\n", status); corlib = mono_assembly_load_from_full (image, "mscorlib", &status, FALSE); if (corlib == NULL || status != 0) g_print ("mono_assembly_load_from_full failed: %d\n", status); if (corlib) return corlib; } #endif aname = mono_assembly_name_new ("mscorlib.dll"); corlib = invoke_assembly_preload_hook (aname, assemblies_path); mono_assembly_name_free (aname); g_free (aname); if (corlib != NULL) return corlib; if (assemblies_path) { corlib = load_in_path ("mscorlib.dll", (const char**)assemblies_path, status, FALSE); if (corlib) return corlib; } /* Load corlib from mono/ */ corlib_file = g_build_filename ("mono", runtime->framework_version, "mscorlib.dll", NULL); if (assemblies_path) { corlib = load_in_path (corlib_file, (const char**)assemblies_path, status, FALSE); if (corlib) { g_free (corlib_file); return corlib; } } corlib = load_in_path (corlib_file, default_path, status, FALSE); g_free (corlib_file); if (corlib && !strcmp (runtime->framework_version, "4.5")) default_path [1] = g_strdup_printf ("%s/mono/4.5/Facades", default_path [0]); return corlib; } MonoAssembly* mono_assembly_load_full_nosearch (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status, gboolean refonly) { MonoAssembly *result; char *fullpath, *filename; MonoAssemblyName maped_aname; MonoAssemblyName maped_name_pp; int ext_index; const char *ext; int len; aname = mono_assembly_remap_version (aname, &maped_aname); /* Reflection only assemblies don't get assembly binding */ if (!refonly) aname = mono_assembly_apply_binding (aname, &maped_name_pp); result = mono_assembly_loaded_full (aname, refonly); if (result) return result; result = refonly ? invoke_assembly_refonly_preload_hook (aname, assemblies_path) : invoke_assembly_preload_hook (aname, assemblies_path); if (result) { result->in_gac = FALSE; return result; } /* Currently we retrieve the loaded corlib for reflection * only requests, like a common reflection only assembly */ if (strcmp (aname->name, "mscorlib") == 0 || strcmp (aname->name, "mscorlib.dll") == 0) { return mono_assembly_load_corlib (mono_get_runtime_info (), status); } len = strlen (aname->name); for (ext_index = 0; ext_index < 2; ext_index ++) { ext = ext_index == 0 ? ".dll" : ".exe"; if (len > 4 && (!strcmp (aname->name + len - 4, ".dll") || !strcmp (aname->name + len - 4, ".exe"))) { filename = g_strdup (aname->name); /* Don't try appending .dll/.exe if it already has one of those extensions */ ext_index++; } else { filename = g_strconcat (aname->name, ext, NULL); } result = mono_assembly_load_from_gac (aname, filename, status, refonly); if (result) { g_free (filename); return result; } if (basedir) { fullpath = g_build_filename (basedir, filename, NULL); result = mono_assembly_open_full (fullpath, status, refonly); g_free (fullpath); if (result) { result->in_gac = FALSE; g_free (filename); return result; } } result = load_in_path (filename, default_path, status, refonly); if (result) result->in_gac = FALSE; g_free (filename); if (result) return result; } return result; } /** * mono_assembly_load_full: * @aname: A MonoAssemblyName with the assembly name to load. * @basedir: A directory to look up the assembly at. * @status: a pointer to a MonoImageOpenStatus to return the status of the load operation * @refonly: Whether this assembly is being opened in "reflection-only" mode. * * Loads the assembly referenced by @aname, if the value of @basedir is not NULL, it * attempts to load the assembly from that directory before probing the standard locations. * * If the assembly is being opened in reflection-only mode (@refonly set to TRUE) then no * assembly binding takes place. * * Returns: the assembly referenced by @aname loaded or NULL on error. On error the * value pointed by status is updated with an error code. */ MonoAssembly* mono_assembly_load_full (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status, gboolean refonly) { MonoAssembly *result = mono_assembly_load_full_nosearch (aname, basedir, status, refonly); if (!result) /* Try a postload search hook */ result = mono_assembly_invoke_search_hook_internal (aname, refonly, TRUE); return result; } /** * mono_assembly_load: * @aname: A MonoAssemblyName with the assembly name to load. * @basedir: A directory to look up the assembly at. * @status: a pointer to a MonoImageOpenStatus to return the status of the load operation * * Loads the assembly referenced by @aname, if the value of @basedir is not NULL, it * attempts to load the assembly from that directory before probing the standard locations. * * Returns: the assembly referenced by @aname loaded or NULL on error. On error the * value pointed by status is updated with an error code. */ MonoAssembly* mono_assembly_load (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status) { return mono_assembly_load_full (aname, basedir, status, FALSE); } MonoAssembly* mono_assembly_loaded_full (MonoAssemblyName *aname, gboolean refonly) { MonoAssembly *res; MonoAssemblyName maped_aname; aname = mono_assembly_remap_version (aname, &maped_aname); res = mono_assembly_invoke_search_hook_internal (aname, refonly, FALSE); return res; } /** * mono_assembly_loaded: * @aname: an assembly to look for. * * Returns: NULL If the given @aname assembly has not been loaded, or a pointer to * a MonoAssembly that matches the MonoAssemblyName specified. */ MonoAssembly* mono_assembly_loaded (MonoAssemblyName *aname) { return mono_assembly_loaded_full (aname, FALSE); } void mono_assembly_release_gc_roots (MonoAssembly *assembly) { if (assembly == NULL || assembly == REFERENCE_MISSING) return; if (assembly->dynamic) { int i; MonoDynamicImage *dynimg = (MonoDynamicImage *)assembly->image; for (i = 0; i < dynimg->image.module_count; ++i) mono_dynamic_image_release_gc_roots ((MonoDynamicImage *)dynimg->image.modules [i]); mono_dynamic_image_release_gc_roots (dynimg); } } /* * Returns whether mono_assembly_close_finish() must be called as * well. See comment for mono_image_close_except_pools() for why we * unload in two steps. */ gboolean mono_assembly_close_except_image_pools (MonoAssembly *assembly) { GSList *tmp; g_return_val_if_fail (assembly != NULL, FALSE); if (assembly == REFERENCE_MISSING) return FALSE; /* Might be 0 already */ if (InterlockedDecrement (&assembly->ref_count) > 0) return FALSE; mono_profiler_assembly_event (assembly, MONO_PROFILE_START_UNLOAD); mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Unloading assembly %s [%p].", assembly->aname.name, assembly); mono_debug_close_image (assembly->image); mono_assemblies_lock (); loaded_assemblies = g_list_remove (loaded_assemblies, assembly); mono_assemblies_unlock (); assembly->image->assembly = NULL; if (!mono_image_close_except_pools (assembly->image)) assembly->image = NULL; for (tmp = assembly->friend_assembly_names; tmp; tmp = tmp->next) { MonoAssemblyName *fname = tmp->data; mono_assembly_name_free (fname); g_free (fname); } g_slist_free (assembly->friend_assembly_names); g_free (assembly->basedir); mono_profiler_assembly_event (assembly, MONO_PROFILE_END_UNLOAD); return TRUE; } void mono_assembly_close_finish (MonoAssembly *assembly) { g_assert (assembly && assembly != REFERENCE_MISSING); if (assembly->image) mono_image_close_finish (assembly->image); if (assembly->dynamic) { g_free ((char*)assembly->aname.culture); } else { g_free (assembly); } } /** * mono_assembly_close: * @assembly: the assembly to release. * * This method releases a reference to the @assembly. The assembly is * only released when all the outstanding references to it are released. */ void mono_assembly_close (MonoAssembly *assembly) { if (mono_assembly_close_except_image_pools (assembly)) mono_assembly_close_finish (assembly); } MonoImage* mono_assembly_load_module (MonoAssembly *assembly, guint32 idx) { return mono_image_load_file_for_image (assembly->image, idx); } 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. */ mono_assemblies_lock (); copy = g_list_copy (loaded_assemblies); mono_assemblies_unlock (); g_list_foreach (loaded_assemblies, func, user_data); g_list_free (copy); } /** * mono_assemblies_cleanup: * * Free all resources used by this module. */ void mono_assemblies_cleanup (void) { GSList *l; DeleteCriticalSection (&assemblies_mutex); mono_mutex_destroy (&assembly_binding_mutex); for (l = loaded_assembly_bindings; l; l = l->next) { MonoAssemblyBindingInfo *info = l->data; mono_assembly_binding_info_free (info); g_free (info); } g_slist_free (loaded_assembly_bindings); free_assembly_load_hooks (); free_assembly_search_hooks (); free_assembly_preload_hooks (); } /*LOCKING takes the assembly_binding lock*/ void mono_assembly_cleanup_domain_bindings (guint32 domain_id) { GSList **iter; mono_assembly_binding_lock (); iter = &loaded_assembly_bindings; while (*iter) { GSList *l = *iter; MonoAssemblyBindingInfo *info = l->data; if (info->domain_id == domain_id) { *iter = l->next; mono_assembly_binding_info_free (info); g_free (info); g_slist_free_1 (l); } else { iter = &l->next; } } mono_assembly_binding_unlock (); } /* * Holds the assembly of the application, for * System.Diagnostics.Process::MainModule */ static MonoAssembly *main_assembly=NULL; void mono_assembly_set_main (MonoAssembly *assembly) { main_assembly = assembly; } /** * mono_assembly_get_main: * * Returns: the assembly for the application, the first assembly that is loaded by the VM */ MonoAssembly * mono_assembly_get_main (void) { return (main_assembly); } /** * mono_assembly_get_image: * @assembly: The assembly to retrieve the image from * * Returns: the MonoImage associated with this assembly. */ MonoImage* mono_assembly_get_image (MonoAssembly *assembly) { return assembly->image; } void mono_register_bundled_assemblies (const MonoBundledAssembly **assemblies) { bundles = assemblies; } #define MONO_DECLSEC_FORMAT_10 0x3C #define MONO_DECLSEC_FORMAT_20 0x2E #define MONO_DECLSEC_FIELD 0x53 #define MONO_DECLSEC_PROPERTY 0x54 #define SKIP_VISIBILITY_XML_ATTRIBUTE ("\"SkipVerification\"") #define SKIP_VISIBILITY_ATTRIBUTE_NAME ("System.Security.Permissions.SecurityPermissionAttribute") #define SKIP_VISIBILITY_ATTRIBUTE_SIZE (sizeof (SKIP_VISIBILITY_ATTRIBUTE_NAME) - 1) #define SKIP_VISIBILITY_PROPERTY_NAME ("SkipVerification") #define SKIP_VISIBILITY_PROPERTY_SIZE (sizeof (SKIP_VISIBILITY_PROPERTY_NAME) - 1) static gboolean mono_assembly_try_decode_skip_verification_param (const char *p, const char **resp, gboolean *abort_decoding) { int len; switch (*p++) { case MONO_DECLSEC_PROPERTY: break; case MONO_DECLSEC_FIELD: default: *abort_decoding = TRUE; return FALSE; break; } if (*p++ != MONO_TYPE_BOOLEAN) { *abort_decoding = TRUE; return FALSE; } /* property name length */ len = mono_metadata_decode_value (p, &p); if (len >= SKIP_VISIBILITY_PROPERTY_SIZE && !memcmp (p, SKIP_VISIBILITY_PROPERTY_NAME, SKIP_VISIBILITY_PROPERTY_SIZE)) { p += len; return *p; } p += len + 1; *resp = p; return FALSE; } static gboolean mono_assembly_try_decode_skip_verification (const char *p, const char *endn) { int i, j, num, len, params_len; if (*p == MONO_DECLSEC_FORMAT_10) { gsize read, written; char *res = g_convert (p, endn - p, "UTF-8", "UTF-16LE", &read, &written, NULL); if (res) { gboolean found = strstr (res, SKIP_VISIBILITY_XML_ATTRIBUTE) != NULL; g_free (res); return found; } return FALSE; } if (*p++ != MONO_DECLSEC_FORMAT_20) return FALSE; /* number of encoded permission attributes */ num = mono_metadata_decode_value (p, &p); for (i = 0; i < num; ++i) { gboolean is_valid = FALSE; gboolean abort_decoding = FALSE; /* attribute name length */ len = mono_metadata_decode_value (p, &p); /* We don't really need to fully decode the type. Comparing the name is enough */ is_valid = len >= SKIP_VISIBILITY_ATTRIBUTE_SIZE && !memcmp (p, SKIP_VISIBILITY_ATTRIBUTE_NAME, SKIP_VISIBILITY_ATTRIBUTE_SIZE); p += len; /*size of the params table*/ params_len = mono_metadata_decode_value (p, &p); if (is_valid) { const char *params_end = p + params_len; /* number of parameters */ len = mono_metadata_decode_value (p, &p); for (j = 0; j < len; ++j) { if (mono_assembly_try_decode_skip_verification_param (p, &p, &abort_decoding)) return TRUE; if (abort_decoding) break; } p = params_end; } else { p += params_len; } } return FALSE; } gboolean mono_assembly_has_skip_verification (MonoAssembly *assembly) { MonoTableInfo *t; guint32 cols [MONO_DECL_SECURITY_SIZE]; const char *blob; int i, len; if (MONO_SECMAN_FLAG_INIT (assembly->skipverification)) return MONO_SECMAN_FLAG_GET_VALUE (assembly->skipverification); t = &assembly->image->tables [MONO_TABLE_DECLSECURITY]; for (i = 0; i < t->rows; ++i) { mono_metadata_decode_row (t, i, cols, MONO_DECL_SECURITY_SIZE); if ((cols [MONO_DECL_SECURITY_PARENT] & MONO_HAS_DECL_SECURITY_MASK) != MONO_HAS_DECL_SECURITY_ASSEMBLY) continue; if (cols [MONO_DECL_SECURITY_ACTION] != SECURITY_ACTION_REQMIN) continue; blob = mono_metadata_blob_heap (assembly->image, cols [MONO_DECL_SECURITY_PERMISSIONSET]); len = mono_metadata_decode_blob_size (blob, &blob); if (!len) continue; if (mono_assembly_try_decode_skip_verification (blob, blob + len)) { MONO_SECMAN_FLAG_SET_VALUE (assembly->skipverification, TRUE); return TRUE; } } MONO_SECMAN_FLAG_SET_VALUE (assembly->skipverification, FALSE); return FALSE; }