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/*
* 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 <config.h>
#include <stdio.h>
#include <glib.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include "assembly.h"
#include "image.h"
#include "object-internals.h"
#include <mono/metadata/loader.h>
#include <mono/metadata/tabledefs.h>
#include <mono/metadata/metadata-internals.h>
#include <mono/metadata/profiler-private.h>
#include <mono/metadata/class-internals.h>
#include <mono/metadata/domain-internals.h>
#include <mono/metadata/mono-endian.h>
#include <mono/metadata/mono-debug.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>
#include <mono/utils/mono-logger-internal.h>
#include <mono/utils/mono-path.h>
#include <mono/metadata/reflection.h>
#include <mono/metadata/coree.h>
#include <mono/utils/mono-io-portability.h>
#ifndef HOST_WIN32
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#endif
#ifdef PLATFORM_MACOSX
#include <mach-o/dyld.h>
#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
};
/* 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.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.Runtime.Remoting", 0},
{"System.Runtime.Serialization.Formatters.Soap", 0},
{"System.Security", 0},
{"System.ServiceProcess", 0},
{"System.Transactions", 0},
{"System.Web", 0},
{"System.Web.Abstractions", 2},
{"System.Web.Mobile", 0},
{"System.Web.Routing", 2},
{"System.Web.Services", 0},
{"System.Windows.Forms", 0},
{"System.Xml", 0},
{"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;
/* 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;
#ifdef __native_client__
path = nacl_mono_path;
#else
path = g_getenv ("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, "/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);
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);
}
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]) {
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;
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);
}
#ifndef DISABLE_ASSEMBLY_REMAPPING
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 = &current_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");
mono_trace (G_LOG_LEVEL_WARNING, 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;
}
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 = &current_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;
}
}
return aname;
}
#endif
/*
* 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);
}
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;
#ifndef DISABLE_ASSEMBLY_REMAPPING
MonoAssemblyName maped_aname;
#endif
gchar *fullname, *gacpath;
gchar **paths;
memset (&base_name, 0, sizeof (MonoAssemblyName));
aname = &base_name;
if (!mono_assembly_name_parse (name, aname))
return NULL;
#ifndef DISABLE_ASSEMBLY_REMAPPING
/*
* 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, &maped_aname);
#endif
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: Assumes that we are already locked */
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 inline gboolean
info_major_minor_in_range (MonoAssemblyBindingInfo *info, MonoAssemblyName *aname)
{
if (!info->has_old_version_bottom)
return FALSE;
if (info->old_version_bottom.major > aname->major || info->old_version_bottom.minor > aname->minor)
return FALSE;
if (info->has_old_version_top && (info->old_version_top.major < aname->major || info->old_version_top.minor < aname->minor))
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_loader_lock ();
info = search_binding_loaded (aname);
if (!info) {
mono_domain_lock (domain);
info = get_per_domain_assembly_binding_info (domain, aname);
mono_domain_unlock (domain);
}
mono_loader_unlock ();
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);
}
mono_domain_unlock (domain);
mono_loader_lock ();
mono_domain_lock (domain);
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);
mono_loader_unlock ();
}
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_loader_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_loader_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/<version> */
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);
return corlib;
}
MonoAssembly*
mono_assembly_load_full_nosearch (MonoAssemblyName *aname,
const char *basedir,
MonoImageOpenStatus *status,
gboolean refonly)
{
MonoAssembly *result;
char *fullpath, *filename;
#ifndef DISABLE_ASSEMBLY_REMAPPING
MonoAssemblyName maped_aname;
#endif
MonoAssemblyName maped_name_pp;
int ext_index;
const char *ext;
int len;
#ifndef DISABLE_ASSEMBLY_REMAPPING
aname = mono_assembly_remap_version (aname, &maped_aname);
#endif
/* 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;
#ifndef DISABLE_ASSEMBLY_REMAPPING
MonoAssemblyName maped_aname;
aname = mono_assembly_remap_version (aname, &maped_aname);
#endif
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);
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 assumes loader lock is held*/
void
mono_assembly_cleanup_domain_bindings (guint32 domain_id)
{
GSList **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;
}
}
}
/*
* 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;
}
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