/
assembly.c
2464 lines (2076 loc) · 62.3 KB
/
assembly.c
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/*
* assembly.c: Routines for loading assemblies.
*
* Author:
* Miguel de Icaza (miguel@ximian.com)
*
* (C) 2001 Ximian, Inc. http://www.ximian.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 "cil-coff.h"
#include "rawbuffer.h"
#include <mono/metadata/loader.h>
#include <mono/metadata/tabledefs.h>
#include <mono/metadata/metadata-internals.h>
#include <mono/metadata/class-internals.h>
#include <mono/metadata/domain-internals.h>
#include <mono/metadata/mono-endian.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.h>
#include <mono/metadata/reflection.h>
#ifndef PLATFORM_WIN32
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.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;
/* The list of system assemblies what will be remapped to the running
* runtime version. WARNING: this list must be sorted.
*/
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.SqliteClient", 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.Configuration.Install", 0},
{"System.Data", 0},
{"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.Web", 0},
{"System.Web.Mobile", 0},
{"System.Web.Services", 0},
{"System.Windows.Forms", 0},
{"System.Xml", 0},
{"mscorlib", 0}
};
/*
* keeps track of loaded assemblies
*/
static GList *loaded_assemblies = NULL;
static MonoAssembly *corlib;
/* 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;
/* A hastable of thread->assembly list mappings */
static GHashTable *assemblies_loading;
/* A hashtable of reflection only load thread->assemblies mappings */
static GHashTable *assemblies_refonly_loading;
/* 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 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;
}
static void
check_path_env (void)
{
const char *path;
char **splitted, **dest;
path = g_getenv ("MONO_PATH");
if (!path)
return;
splitted = g_strsplit (path, G_SEARCHPATH_SEPARATOR_S, 1000);
if (assemblies_path)
g_strfreev (assemblies_path);
assemblies_path = 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_PATH doesn't exist or has wrong permissions.", *splitted);
splitted++;
}
}
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_PATH doesn't exist or has wrong permissions.", *splitted);
splitted++;
}
}
static gboolean
assembly_binding_maps_name (MonoAssemblyBindingInfo *info, MonoAssemblyName *aname)
{
if (strcmp (info->name, aname->name))
return FALSE;
if (info->major != aname->major || info->minor != aname->minor)
return FALSE;
if ((info->culture != NULL) != (aname->culture != NULL))
return FALSE;
if (info->culture && strcmp (info->culture, aname->culture))
return FALSE;
if (strcmp ((const char *)info->public_key_token, (const char *)aname->public_key_token))
return FALSE;
return TRUE;
}
static void
mono_assembly_binding_info_free (MonoAssemblyBindingInfo *info)
{
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 (strcmp ((char*)l->public_key_token, (char*)r->public_key_token))
return FALSE;
return TRUE;
}
static MonoAssembly*
search_loaded (MonoAssemblyName* aname, gboolean refonly)
{
GList *tmp;
MonoAssembly *ass;
GList *loading;
ass = mono_assembly_invoke_search_hook_internal (aname, refonly, FALSE);
if (ass)
return ass;
/*
* The assembly might be under load by this thread. In this case, it is
* safe to return an incomplete instance to prevent loops.
*/
loading = g_hash_table_lookup (refonly ? assemblies_refonly_loading : assemblies_loading, (gpointer)GetCurrentThreadId ());
for (tmp = loading; tmp; tmp = tmp->next) {
ass = tmp->data;
if (!mono_assembly_names_equal (aname, &ass->aname))
continue;
return ass;
}
return NULL;
}
static MonoAssembly *
load_in_path (const char *basename, const char** search_path, MonoImageOpenStatus *status, 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 PLATFORM_WIN32
static char *
compute_base (char *path)
{
char *p = rindex (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 = rindex (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 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/1.0", NULL);
if (stat (mono, &buf) == -1)
fallback ();
else {
mono_set_dirs (lib, config);
}
g_free (config);
g_free (lib);
g_free (mono);
}
#endif /* PLATFORM_WIN32 */
#ifdef UNDER_CE
#undef GetModuleFileName
#define GetModuleFileName ceGetModuleFileNameA
DWORD ceGetModuleFileNameA(HMODULE hModule, char* lpFilename, DWORD nSize)
{
DWORD res = 0;
wchar_t* wbuff = (wchar_t*)LocalAlloc(LPTR, nSize*2);
res = GetModuleFileNameW(hModule, wbuff, nSize);
if (res) {
int len = wcslen(wbuff);
WideCharToMultiByte(CP_ACP, 0, wbuff, len, lpFilename, len, NULL, NULL);
}
LocalFree(wbuff);
return res;
}
#endif
/**
* 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)
{
#ifdef PLATFORM_WIN32
gunichar2 moddir [MAXPATHLEN];
gchar *bindir, *installdir, *root, *utf8name, *config;
GetModuleFileNameW (NULL, moddir, MAXPATHLEN);
utf8name = g_utf16_to_utf8 (moddir, -1, NULL, NULL, NULL);
bindir = g_path_get_dirname (utf8name);
installdir = g_path_get_dirname (bindir);
root = g_build_path (G_DIR_SEPARATOR_S, installdir, "lib", NULL);
config = g_build_filename (root, "..", "etc", NULL);
mono_set_dirs (root, config);
g_free (config);
g_free (root);
g_free (installdir);
g_free (bindir);
g_free (utf8name);
#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);
assemblies_loading = g_hash_table_new (NULL, NULL);
assemblies_refonly_loading = g_hash_table_new (NULL, NULL);
}
gboolean
mono_assembly_fill_assembly_name (MonoImage *image, MonoAssemblyName *aname)
{
MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLY];
guint32 cols [MONO_ASSEMBLY_SIZE];
if (!t->rows)
return FALSE;
mono_metadata_decode_row (t, 0, cols, MONO_ASSEMBLY_SIZE);
aname->hash_len = 0;
aname->hash_value = NULL;
aname->name = mono_metadata_string_heap (image, cols [MONO_ASSEMBLY_NAME]);
aname->culture = mono_metadata_string_heap (image, cols [MONO_ASSEMBLY_CULTURE]);
aname->flags = cols [MONO_ASSEMBLY_FLAGS];
aname->major = cols [MONO_ASSEMBLY_MAJOR_VERSION];
aname->minor = cols [MONO_ASSEMBLY_MINOR_VERSION];
aname->build = cols [MONO_ASSEMBLY_BUILD_NUMBER];
aname->revision = cols [MONO_ASSEMBLY_REV_NUMBER];
aname->hash_alg = cols [MONO_ASSEMBLY_HASH_ALG];
if (cols [MONO_ASSEMBLY_PUBLIC_KEY]) {
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)
{
return g_strdup_printf (
"%s, Version=%d.%d.%d.%d, Culture=%s%s%s",
aname->name,
aname->major, aname->minor, aname->build, aname->revision,
aname->culture && *aname->culture? aname->culture: "neutral",
aname->public_key_token [0] ? ", PublicKeyToken=" : "",
aname->public_key_token [0] ? (char *)aname->public_key_token : "");
}
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);
}
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 ();
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;
}
}
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 ();
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);
/*
* 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 = g_strdup ("");
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->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");
}
g_warning ("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\n",
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)
{
MonoTableInfo *t;
int i;
*status = MONO_IMAGE_OK;
t = &image->tables [MONO_TABLE_ASSEMBLYREF];
image->references = g_new0 (MonoAssembly *, t->rows + 1);
/* resolve assembly references for modules */
for (i = 0; i < image->module_count; i++){
if (image->modules [i]) {
image->modules [i]->assembly = image->assembly;
mono_assembly_load_references (image->modules [i], status);
}
}
}
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;