[Pkg-mono-svn-commits] rev 3726 - in mono/trunk/debian: . patches
Mirco Bauer
meebey at alioth.debian.org
Mon Oct 13 21:16:30 UTC 2008
Author: meebey
Date: 2008-10-13 21:16:29 +0000 (Mon, 13 Oct 2008)
New Revision: 3726
Added:
mono/trunk/debian/patches/fix_Assembly.LoadFrom_deadlock.dpatch
Modified:
mono/trunk/debian/changelog
mono/trunk/debian/patches/00list
Log:
* debian/fix_Assembly.LoadFrom_deadlock.dpatch:
+ Fixes deadlock in loading assemblies code like Assembly.LoadFrom(),
causing deadlocks (mostly) on SMP systems.
(patches taken from upstream SVN revisions: r105036, r105153, r113458,
r115451 and r115697)
Modified: mono/trunk/debian/changelog
===================================================================
--- mono/trunk/debian/changelog 2008-10-11 20:47:08 UTC (rev 3725)
+++ mono/trunk/debian/changelog 2008-10-13 21:16:29 UTC (rev 3726)
@@ -3,6 +3,11 @@
[ Mirco Bauer ]
* Added lpia to Architecture fields.
(to make Jo Shields more happy)
+ * debian/fix_Assembly.LoadFrom_deadlock.dpatch:
+ + Fixes deadlock in loading assemblies code like Assembly.LoadFrom(),
+ causing deadlocks (mostly) on SMP systems.
+ (patches taken from upstream SVN revisions: r105036, r105153, r113458,
+ r115451 and r115697)
[ Jo Shields ]
* Add myself to Uploaders
Modified: mono/trunk/debian/patches/00list
===================================================================
--- mono/trunk/debian/patches/00list 2008-10-11 20:47:08 UTC (rev 3725)
+++ mono/trunk/debian/patches/00list 2008-10-13 21:16:29 UTC (rev 3726)
@@ -19,4 +19,5 @@
fix_CRLF_injection_CVE-2008-3906
fix_IsolatedStorage_regression_r99231_r101171_r101172
fix_mono-config_man_page_r111681
+fix_Assembly.LoadFrom_deadlock
99_autoreconf
Added: mono/trunk/debian/patches/fix_Assembly.LoadFrom_deadlock.dpatch
===================================================================
--- mono/trunk/debian/patches/fix_Assembly.LoadFrom_deadlock.dpatch (rev 0)
+++ mono/trunk/debian/patches/fix_Assembly.LoadFrom_deadlock.dpatch 2008-10-13 21:16:29 UTC (rev 3726)
@@ -0,0 +1,2748 @@
+#! /bin/sh /usr/share/dpatch/dpatch-run
+## fix_Assembly.LoadFrom_deadlock_r113458.dpatch by Mirco Bauer <meebey at debian.org>
+##
+## All lines beginning with `## DP:' are a description of the patch.
+## DP: Fixes a deadlock in Assembly.LoadFrom(), see:
+## DP: https://bugzilla.novell.com/show_bug.cgi?id=434289
+## DP: https://bugzilla.novell.com/show_bug.cgi?id=323696
+## DP: Backported from upstream SVN revisions:
+## DP: r105036:
+## DP: * assembly.c (mono_assembly_load_from_full): Avoid calling the search hooks
+## DP: while holding the assemblies lock to prevent deadlocks. Handle the case
+## DP: where the search hook returns NULL but the assembly was still loaded.
+## DP: Fixes #323696.
+## DP:
+## DP: r105153:
+## DP: * assembly.c (mono_assembly_loaded_full): Avoid calling the search hooks while
+## DP: holding the assemblies lock here too.
+## DP:
+## DP: r113458:
+## DP: * class.c (can_access_internals): Call mono_assembly_load_friends ()
+## DP: before accessing the friend_assembly_names field.
+## DP: * assembly.c (mono_assembly_load_friends): Make this callable multiple
+## DP: times.
+## DP: (mono_assembly_load_from_full): Avoid calling load_friends (), it is
+## DP: called lazily when it is needed.
+## DP: * metadata-internals.h (struct _MonoAssembly): Add
+## DP: 'friend_assembly_names_inited' flag.
+## DP:
+## DP: r115451:
+## DP: * assembly.c: in mono_assembly_load_friends() take the assemblies lock
+## DP: for the least possible amount of time (extending the fix in r113458).
+## DP:
+## DP: r115697:
+## DP: * assembly.c (mono_assembly_open_full): Avoid loading images while holding
+## DP: the low level assemblies lock.
+
+ at DPATCH@
+diff -urNad mono-1.9.1+dfsg~/mono/metadata/assembly.c mono-1.9.1+dfsg/mono/metadata/assembly.c
+--- mono-1.9.1+dfsg~/mono/metadata/assembly.c 2008-10-13 22:43:51.000000000 +0200
++++ mono-1.9.1+dfsg/mono/metadata/assembly.c 2008-10-13 22:49:51.000000000 +0200
+@@ -30,6 +30,7 @@
+ #include <mono/metadata/mono-config.h>
+ #include <mono/utils/mono-digest.h>
+ #include <mono/utils/mono-logger.h>
++#include <mono/utils/mono-membar.h>
+ #include <mono/metadata/reflection.h>
+
+ #ifndef PLATFORM_WIN32
+@@ -372,18 +373,6 @@
+ return TRUE;
+ }
+
+-static MonoAssembly*
+-search_loaded (MonoAssemblyName* aname, gboolean refonly)
+-{
+- MonoAssembly *ass;
+-
+- ass = mono_assembly_invoke_search_hook_internal (aname, refonly, FALSE);
+- if (ass)
+- return ass;
+-
+- return NULL;
+-}
+-
+ static MonoAssembly *
+ load_in_path (const char *basename, const char** search_path, MonoImageOpenStatus *status, MonoBoolean refonly)
+ {
+@@ -1282,11 +1271,8 @@
+ if (bundles != NULL)
+ image = mono_assembly_open_from_bundle (fname, status, refonly);
+
+- if (!image) {
+- mono_assemblies_lock ();
++ if (!image)
+ image = mono_image_open_full (fname, status, refonly);
+- mono_assemblies_unlock ();
+- }
+
+ if (!image){
+ if (*status == MONO_IMAGE_OK)
+@@ -1320,8 +1306,14 @@
+ return ass;
+ }
+
++static void
++free_item (gpointer val, gpointer user_data)
++{
++ g_free (val);
++}
++
+ /*
+- * mono_load_friend_assemblies:
++ * mono_assembly_load_friends:
+ * @ass: an assembly
+ *
+ * Load the list of friend assemblies that are allowed to access
+@@ -1336,9 +1328,32 @@
+ mono_assembly_load_friends (MonoAssembly* ass)
+ {
+ int i;
+- MonoCustomAttrInfo* attrs = mono_custom_attrs_from_assembly (ass);
+- if (!attrs)
++ 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;
+@@ -1357,12 +1372,26 @@
+ aname = g_new0 (MonoAssemblyName, 1);
+ /*g_print ("friend ass: %s\n", data);*/
+ if (mono_assembly_name_parse_full (data, aname, TRUE, NULL, NULL)) {
+- ass->friend_assembly_names = g_slist_prepend (ass->friend_assembly_names, aname);
++ 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 ();
+ }
+
+ /**
+@@ -1441,14 +1470,12 @@
+ mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Image addref %s %p -> %s %p: %d\n", ass->aname.name, ass, image->name, image, image->ref_count);
+
+ /*
+- * Atomically search the loaded list and add ourselves to it if necessary.
++ * The load hooks might take locks so we can't call them while holding the
++ * assemblies lock.
+ */
+- mono_assemblies_lock ();
+ if (ass->aname.name) {
+- /* avoid loading the same assembly twice for now... */
+- ass2 = search_loaded (&ass->aname, refonly);
++ ass2 = mono_assembly_invoke_search_hook_internal (&ass->aname, refonly, FALSE);
+ if (ass2) {
+- mono_assemblies_unlock ();
+ g_free (ass);
+ g_free (base_dir);
+ mono_image_close (image);
+@@ -1457,12 +1484,25 @@
+ }
+ }
+
+- g_assert (image->assembly == NULL);
++ 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);
+- if (mono_defaults.internals_visible_class)
+- mono_assembly_load_friends (ass);
+ mono_assemblies_unlock ();
+
+ mono_assembly_invoke_load_hook (ass);
+@@ -2301,9 +2341,7 @@
+
+ aname = mono_assembly_remap_version (aname, &maped_aname);
+
+- mono_assemblies_lock ();
+- res = search_loaded (aname, refonly);
+- mono_assemblies_unlock ();
++ res = mono_assembly_invoke_search_hook_internal (aname, refonly, FALSE);
+
+ return res;
+ }
+diff -urNad mono-1.9.1+dfsg~/mono/metadata/assembly.c.orig mono-1.9.1+dfsg/mono/metadata/assembly.c.orig
+--- mono-1.9.1+dfsg~/mono/metadata/assembly.c.orig 1970-01-01 01:00:00.000000000 +0100
++++ mono-1.9.1+dfsg/mono/metadata/assembly.c.orig 2008-10-13 22:44:32.000000000 +0200
+@@ -0,0 +1,2503 @@
++/*
++ * assembly.c: Routines for loading assemblies.
++ *
++ * Author:
++ * Miguel de Icaza (miguel at 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 "rawbuffer.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.h>
++#include <mono/utils/mono-membar.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.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;
++
++/* 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 *
++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);
++}
++
++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 ();
++ 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 = 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)
++{
++ /* 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))
++ return g_path_get_dirname (filename);
++
++ cwd = g_get_current_dir ();
++ mixed = g_build_filename (cwd, filename, NULL);
++ parts = g_strsplit (mixed, G_DIR_SEPARATOR_S, 0);
++ g_free (mixed);
++ g_free (cwd);
++
++ list = NULL;
++ for (i = 0; (part = parts [i]) != NULL; i++) {
++ if (!strcmp (part, "."))
++ continue;
++
++ if (!strcmp (part, "..")) {
++ if (list && list->next) /* Don't remove root */
++ list = g_list_delete_link (list, list);
++ } else {
++ list = g_list_prepend (list, part);
++ }
++ }
++
++ result = g_string_new ("");
++ list = g_list_reverse (list);
++
++ /* Ignores last data pointer, which should be the filename */
++ for (tmp = list; tmp && tmp->next != NULL; tmp = tmp->next){
++ if (tmp->data)
++ g_string_append_printf (result, "%s%c", (char *) tmp->data,
++ G_DIR_SEPARATOR);
++ }
++
++ 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_full ((char*)bundles [i]->data, bundles [i]->size, FALSE, status, refonly);
++ 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;
++
++ 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'.", filename);
++ image = NULL;
++
++ if (bundles != NULL)
++ image = mono_assembly_open_from_bundle (fname, status, refonly);
++
++ if (!image) {
++ mono_assemblies_lock ();
++ image = mono_image_open_full (fname, status, refonly);
++ mono_assemblies_unlock ();
++ }
++
++ 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.
++ */
++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 (PLATFORM_WIN32)
++ {
++ gchar *tmp_fn;
++ int i;
++
++ tmp_fn = g_strdup (fname);
++ for (i = strlen (tmp_fn) - 1; i >= 0; i--) {
++ if (tmp_fn [i] == '/')
++ tmp_fn [i] = '\\';
++ }
++
++ base_dir = absolute_dir (tmp_fn);
++ g_free (tmp_fn);
++ }
++#else
++ base_dir = absolute_dir (fname);
++#endif
++
++ /*
++ * 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 (refonly && strcmp (ass->aname.name, "mscorlib") == 0) {
++ // MS.NET doesn't support loading other mscorlibs
++ g_free (ass);
++ g_free (base_dir);
++ mono_image_close (image);
++ *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\n", 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 ();
++
++ 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)
++{
++ const gchar *pkey;
++ gchar header [16], val, *arr;
++ gint i, j, offset, bitlen, keylen, pkeylen;
++
++ keylen = strlen (key) >> 1;
++ if (keylen < 1)
++ return 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;
++
++ /* 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++]);
++ }
++ if (pubkey)
++ *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, 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->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) {
++ /* the constant includes the ending NULL, hence the -1 */
++ if (strlen (token) != (MONO_PUBLIC_KEY_TOKEN_LENGTH - 1)) {
++ return FALSE;
++ }
++ char *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) {
++ if (strcmp (key, "null") == 0 || !parse_public_key (key, &pkey)) {
++ mono_assembly_name_free (aname);
++ return FALSE;
++ }
++
++ 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, aname, FALSE);
++ g_strfreev (parts);
++ return res;
++}
++
++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;
++ gchar **parts;
++ gchar **tmp;
++ gboolean version_defined;
++ gboolean token_defined;
++ guint32 flags = 0;
++
++ 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) {
++ value = g_strstrip (*tmp);
++ if (!g_ascii_strncasecmp (value, "Version=", 8)) {
++ *is_version_defined = TRUE;
++ version = g_strstrip (value + 8);
++ if (strlen (version) == 0) {
++ return FALSE;
++ }
++ tmp++;
++ continue;
++ }
++
++ if (!g_ascii_strncasecmp (value, "Culture=", 8)) {
++ culture = g_strstrip (value + 8);
++ if (strlen (culture) == 0) {
++ return FALSE;
++ }
++ tmp++;
++ continue;
++ }
++
++ if (!g_ascii_strncasecmp (value, "PublicKeyToken=", 15)) {
++ *is_token_defined = TRUE;
++ token = g_strstrip (value + 15);
++ if (strlen (token) == 0) {
++ return FALSE;
++ }
++ tmp++;
++ continue;
++ }
++
++ if (!g_ascii_strncasecmp (value, "PublicKey=", 10)) {
++ key = g_strstrip (value + 10);
++ if (strlen (key) == 0) {
++ return FALSE;
++ }
++ tmp++;
++ continue;
++ }
++
++ if (!g_ascii_strncasecmp (value, "Retargetable=", 13)) {
++ retargetable = g_strstrip (value + 13);
++ if (strlen (retargetable) == 0) {
++ return FALSE;
++ }
++ if (!g_ascii_strcasecmp (retargetable, "yes")) {
++ flags |= ASSEMBLYREF_RETARGETABLE_FLAG;
++ } else if (g_ascii_strcasecmp (retargetable, "no")) {
++ return FALSE;
++ }
++ tmp++;
++ continue;
++ }
++
++ if (!g_ascii_strncasecmp (value, "ProcessorArchitecture=", 22)) {
++ /* this is ignored for now, until we can change MonoAssemblyName */
++ 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))) {
++ return FALSE;
++ }
++
++ res = build_assembly_name (dllname, version, culture, token, key, flags,
++ aname, save_public_key);
++ g_strfreev (parts);
++ return res;
++}
++
++/**
++ * 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);
++}
++
++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 &&
++ strcmp ((char*)aname->public_key_token, (char*)gac_aname.public_key_token) != 0)
++ 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, maped_aname;
++ gchar *fullname, *gacpath;
++ gchar **paths;
++
++ memset (&base_name, 0, sizeof (MonoAssemblyName));
++ aname = &base_name;
++
++ if (!mono_assembly_name_parse (name, aname))
++ return NULL;
++
++ /*
++ * If no specific version has been requested, make sure we load the
++ * correct version for system assemblies.
++ */
++ if ((aname->major | aname->minor | aname->build | aname->revision) == 0)
++ aname = mono_assembly_remap_version (aname, &maped_aname);
++
++ res = mono_assembly_loaded (aname);
++ if (res) {
++ mono_assembly_name_free (aname);
++ return res;
++ }
++
++ res = invoke_assembly_preload_hook (aname, assemblies_path);
++ if (res) {
++ res->in_gac = FALSE;
++ mono_assembly_name_free (aname);
++ return res;
++ }
++
++ fullname = g_strdup_printf ("%s.dll", aname->name);
++
++ if (extra_gac_paths) {
++ paths = extra_gac_paths;
++ while (!res && *paths) {
++ gacpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "lib", "mono", "gac", aname->name, NULL);
++ res = probe_for_partial_name (gacpath, fullname, aname, status);
++ g_free (gacpath);
++ paths++;
++ }
++ }
++
++ if (res) {
++ res->in_gac = TRUE;
++ g_free (fullname);
++ mono_assembly_name_free (aname);
++ return res;
++ }
++
++ gacpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (), "mono", "gac", aname->name, NULL);
++ res = probe_for_partial_name (gacpath, fullname, aname, status);
++ g_free (gacpath);
++
++ if (res)
++ res->in_gac = TRUE;
++ else {
++ MonoDomain *domain = mono_domain_get ();
++ MonoReflectionAssembly *refasm = mono_try_assembly_resolve (domain, mono_string_new (domain, name), FALSE);
++ if (refasm)
++ res = refasm->assembly;
++ }
++
++ g_free (fullname);
++ mono_assembly_name_free (aname);
++
++ return res;
++}
++
++static 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_strdup (aname->culture);
++ g_strdown (culture);
++ } 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 MonoAssemblyName*
++mono_assembly_apply_binding (MonoAssemblyName *aname, MonoAssemblyName *dest_name)
++{
++ MonoAssemblyBindingInfo *info, *info2;
++ MonoImage *ppimage;
++
++ if (aname->public_key_token [0] == 0)
++ return aname;
++
++ mono_loader_lock ();
++ info = search_binding_loaded (aname);
++ mono_loader_unlock ();
++ if (info) {
++ if (!check_policy_versions (info, aname))
++ return aname;
++
++ mono_assembly_bind_version (info, aname, dest_name);
++ return dest_name;
++ }
++
++ info = g_new0 (MonoAssemblyBindingInfo, 1);
++ info->major = aname->major;
++ info->minor = aname->minor;
++
++ 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;
++
++ 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_strdup (aname->culture);
++ g_strdown (culture);
++ } else {
++ culture = g_strdup ("");
++ }
++
++ version = g_strdup_printf ("%d.%d.%d.%d_%s_%s", aname->major,
++ aname->minor, aname->build, aname->revision,
++ culture, aname->public_key_token);
++
++ 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;
++
++ if (corlib) {
++ /* g_print ("corlib already loaded\n"); */
++ 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;
++ MonoAssemblyName maped_aname, maped_name_pp;
++ int ext_index;
++ const char *ext;
++ int len;
++
++ aname = mono_assembly_remap_version (aname, &maped_aname);
++
++ /* Reflection only assemblies don't get assembly binding */
++ if (!refonly)
++ aname = mono_assembly_apply_binding (aname, &maped_name_pp);
++
++ result = mono_assembly_loaded_full (aname, refonly);
++ if (result)
++ return result;
++
++ result = refonly ? invoke_assembly_refonly_preload_hook (aname, assemblies_path) : invoke_assembly_preload_hook (aname, assemblies_path);
++ if (result) {
++ result->in_gac = FALSE;
++ return result;
++ }
++
++ /* Currently we retrieve the loaded corlib for reflection
++ * only requests, like a common reflection only assembly
++ */
++ if (strcmp (aname->name, "mscorlib") == 0 || strcmp (aname->name, "mscorlib.dll") == 0) {
++ return mono_assembly_load_corlib (mono_get_runtime_info (), status);
++ }
++
++ len = strlen (aname->name);
++ for (ext_index = 0; ext_index < 2; ext_index ++) {
++ ext = ext_index == 0 ? ".dll" : ".exe";
++ if (len > 4 && (!strcmp (aname->name + len - 4, ".dll") || !strcmp (aname->name + len - 4, ".exe"))) {
++ filename = g_strdup (aname->name);
++ /* Don't try appending .dll/.exe if it already has one of those extensions */
++ ext_index++;
++ } else {
++ filename = g_strconcat (aname->name, ext, NULL);
++ }
++
++ result = mono_assembly_load_from_gac (aname, filename, status, refonly);
++ if (result) {
++ g_free (filename);
++ return result;
++ }
++
++ if (basedir) {
++ fullpath = g_build_filename (basedir, filename, NULL);
++ result = mono_assembly_open_full (fullpath, status, refonly);
++ g_free (fullpath);
++ if (result) {
++ result->in_gac = FALSE;
++ g_free (filename);
++ return result;
++ }
++ }
++
++ result = load_in_path (filename, default_path, status, refonly);
++ if (result)
++ result->in_gac = FALSE;
++ g_free (filename);
++ if (result)
++ return result;
++ }
++
++ return result;
++}
++
++/**
++ * mono_assembly_load_full:
++ * @aname: A MonoAssemblyName with the assembly name to load.
++ * @basedir: A directory to look up the assembly at.
++ * @status: a pointer to a MonoImageOpenStatus to return the status of the load operation
++ * @refonly: Whether this assembly is being opened in "reflection-only" mode.
++ *
++ * Loads the assembly referenced by @aname, if the value of @basedir is not NULL, it
++ * attempts to load the assembly from that directory before probing the standard locations.
++ *
++ * If the assembly is being opened in reflection-only mode (@refonly set to TRUE) then no
++ * assembly binding takes place.
++ *
++ * Returns: the assembly referenced by @aname loaded or NULL on error. On error the
++ * value pointed by status is updated with an error code.
++ */
++MonoAssembly*
++mono_assembly_load_full (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status, gboolean refonly)
++{
++ MonoAssembly *result = mono_assembly_load_full_nosearch (aname, basedir, status, refonly);
++
++ if (!result)
++ /* Try a postload search hook */
++ result = mono_assembly_invoke_search_hook_internal (aname, refonly, TRUE);
++ return result;
++}
++
++/**
++ * mono_assembly_load:
++ * @aname: A MonoAssemblyName with the assembly name to load.
++ * @basedir: A directory to look up the assembly at.
++ * @status: a pointer to a MonoImageOpenStatus to return the status of the load operation
++ *
++ * Loads the assembly referenced by @aname, if the value of @basedir is not NULL, it
++ * attempts to load the assembly from that directory before probing the standard locations.
++ *
++ * Returns: the assembly referenced by @aname loaded or NULL on error. On error the
++ * value pointed by status is updated with an error code.
++ */
++MonoAssembly*
++mono_assembly_load (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status)
++{
++ return mono_assembly_load_full (aname, basedir, status, FALSE);
++}
++
++MonoAssembly*
++mono_assembly_loaded_full (MonoAssemblyName *aname, gboolean refonly)
++{
++ MonoAssembly *res;
++ MonoAssemblyName maped_aname;
++
++ aname = mono_assembly_remap_version (aname, &maped_aname);
++
++ res = mono_assembly_invoke_search_hook_internal (aname, refonly, FALSE);
++
++ return res;
++}
++
++/**
++ * mono_assembly_loaded:
++ * @aname: an assembly to look for.
++ *
++ * Returns: NULL If the given @aname assembly has not been loaded, or a pointer to
++ * a MonoAssembly that matches the MonoAssemblyName specified.
++ */
++MonoAssembly*
++mono_assembly_loaded (MonoAssemblyName *aname)
++{
++ return mono_assembly_loaded_full (aname, FALSE);
++}
++
++/**
++ * 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)
++{
++ GSList *tmp;
++ g_return_if_fail (assembly != NULL);
++
++ if (assembly == REFERENCE_MISSING)
++ return;
++
++ /* Might be 0 already */
++ if (InterlockedDecrement (&assembly->ref_count) > 0)
++ return;
++
++ 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;
++
++ mono_image_close (assembly->image);
++
++ 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);
++ if (assembly->dynamic) {
++ g_free ((char*)assembly->aname.culture);
++ } else {
++ g_free (assembly);
++ }
++
++ mono_profiler_assembly_event (assembly, MONO_PROFILE_END_UNLOAD);
++}
++
++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 ();
++}
++
++/*
++ * 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;
++}
+diff -urNad mono-1.9.1+dfsg~/mono/metadata/class.c mono-1.9.1+dfsg/mono/metadata/class.c
+--- mono-1.9.1+dfsg~/mono/metadata/class.c 2008-10-13 22:43:51.000000000 +0200
++++ mono-1.9.1+dfsg/mono/metadata/class.c 2008-10-13 22:44:32.000000000 +0200
+@@ -6238,6 +6238,7 @@
+ return TRUE;
+ if (!accessed || !accessing)
+ return FALSE;
++ mono_assembly_load_friends (accessed);
+ for (tmp = accessed->friend_assembly_names; tmp; tmp = tmp->next) {
+ MonoAssemblyName *friend = tmp->data;
+ /* Be conservative with checks */
+diff -urNad mono-1.9.1+dfsg~/mono/metadata/metadata-internals.h mono-1.9.1+dfsg/mono/metadata/metadata-internals.h
+--- mono-1.9.1+dfsg~/mono/metadata/metadata-internals.h 2008-10-13 22:43:51.000000000 +0200
++++ mono-1.9.1+dfsg/mono/metadata/metadata-internals.h 2008-10-13 22:44:32.000000000 +0200
+@@ -25,7 +25,8 @@
+ MonoAssemblyName aname;
+ MonoDl *aot_module;
+ MonoImage *image;
+- GSList *friend_assembly_names;
++ GSList *friend_assembly_names; /* Computed by mono_assembly_load_friends () */
++ guint8 friend_assembly_names_inited;
+ guint8 in_gac;
+ guint8 dynamic;
+ guint8 corlib_internal;
Property changes on: mono/trunk/debian/patches/fix_Assembly.LoadFrom_deadlock.dpatch
___________________________________________________________________
Name: svn:mergeinfo
+
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