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/*
* image.c: Routines for manipulating an image stored in an
* extended PE/COFF file.
*
* Authors:
* Miguel de Icaza (miguel@ximian.com)
* Paolo Molaro (lupus@ximian.com)
*
* Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
* Copyright 2004-2009 Novell, Inc (http://www.novell.com)
*
*/
#include <config.h>
#include <stdio.h>
#include <glib.h>
#include <errno.h>
#include <time.h>
#include <string.h>
#include "image.h"
#include "cil-coff.h"
#include "mono-endian.h"
#include "tabledefs.h"
#include "tokentype.h"
#include "metadata-internals.h"
#include "profiler-private.h"
#include "loader.h"
#include "marshal.h"
#include "coree.h"
#include <mono/io-layer/io-layer.h>
#include <mono/utils/mono-logger-internal.h>
#include <mono/utils/mono-path.h>
#include <mono/utils/mono-mmap.h>
#include <mono/utils/mono-io-portability.h>
#include <mono/utils/atomic.h>
#include <mono/metadata/class-internals.h>
#include <mono/metadata/assembly.h>
#include <mono/metadata/object-internals.h>
#include <mono/metadata/security-core-clr.h>
#include <mono/metadata/verify-internals.h>
#include <mono/metadata/verify.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#define INVALID_ADDRESS 0xffffffff
/*
* Keeps track of the various assemblies loaded
*/
static GHashTable *loaded_images_hash;
static GHashTable *loaded_images_refonly_hash;
static gboolean debug_assembly_unload = FALSE;
#define mono_images_lock() if (mutex_inited) mono_mutex_lock (&images_mutex)
#define mono_images_unlock() if (mutex_inited) mono_mutex_unlock (&images_mutex)
static gboolean mutex_inited;
static mono_mutex_t images_mutex;
typedef struct ImageUnloadHook ImageUnloadHook;
struct ImageUnloadHook {
MonoImageUnloadFunc func;
gpointer user_data;
};
GSList *image_unload_hooks;
void
mono_install_image_unload_hook (MonoImageUnloadFunc func, gpointer user_data)
{
ImageUnloadHook *hook;
g_return_if_fail (func != NULL);
hook = g_new0 (ImageUnloadHook, 1);
hook->func = func;
hook->user_data = user_data;
image_unload_hooks = g_slist_prepend (image_unload_hooks, hook);
}
void
mono_remove_image_unload_hook (MonoImageUnloadFunc func, gpointer user_data)
{
GSList *l;
ImageUnloadHook *hook;
for (l = image_unload_hooks; l; l = l->next) {
hook = l->data;
if (hook->func == func && hook->user_data == user_data) {
g_free (hook);
image_unload_hooks = g_slist_delete_link (image_unload_hooks, l);
break;
}
}
}
static void
mono_image_invoke_unload_hook (MonoImage *image)
{
GSList *l;
ImageUnloadHook *hook;
for (l = image_unload_hooks; l; l = l->next) {
hook = l->data;
hook->func (image, hook->user_data);
}
}
/* returns offset relative to image->raw_data */
guint32
mono_cli_rva_image_map (MonoImage *image, guint32 addr)
{
MonoCLIImageInfo *iinfo = image->image_info;
const int top = iinfo->cli_section_count;
MonoSectionTable *tables = iinfo->cli_section_tables;
int i;
for (i = 0; i < top; i++){
if ((addr >= tables->st_virtual_address) &&
(addr < tables->st_virtual_address + tables->st_raw_data_size)){
#ifdef HOST_WIN32
if (image->is_module_handle)
return addr;
#endif
return addr - tables->st_virtual_address + tables->st_raw_data_ptr;
}
tables++;
}
return INVALID_ADDRESS;
}
/**
* mono_images_rva_map:
* @image: a MonoImage
* @addr: relative virtual address (RVA)
*
* This is a low-level routine used by the runtime to map relative
* virtual address (RVA) into their location in memory.
*
* Returns: the address in memory for the given RVA, or NULL if the
* RVA is not valid for this image.
*/
char *
mono_image_rva_map (MonoImage *image, guint32 addr)
{
MonoCLIImageInfo *iinfo = image->image_info;
const int top = iinfo->cli_section_count;
MonoSectionTable *tables = iinfo->cli_section_tables;
int i;
#ifdef HOST_WIN32
if (image->is_module_handle) {
if (addr && addr < image->raw_data_len)
return image->raw_data + addr;
else
return NULL;
}
#endif
for (i = 0; i < top; i++){
if ((addr >= tables->st_virtual_address) &&
(addr < tables->st_virtual_address + tables->st_raw_data_size)){
if (!iinfo->cli_sections [i]) {
if (!mono_image_ensure_section_idx (image, i))
return NULL;
}
return (char*)iinfo->cli_sections [i] +
(addr - tables->st_virtual_address);
}
tables++;
}
return NULL;
}
/**
* mono_images_init:
*
* Initialize the global variables used by this module.
*/
void
mono_images_init (void)
{
mono_mutex_init_recursive (&images_mutex);
loaded_images_hash = g_hash_table_new (g_str_hash, g_str_equal);
loaded_images_refonly_hash = g_hash_table_new (g_str_hash, g_str_equal);
debug_assembly_unload = g_getenv ("MONO_DEBUG_ASSEMBLY_UNLOAD") != NULL;
mutex_inited = TRUE;
}
/**
* mono_images_cleanup:
*
* Free all resources used by this module.
*/
void
mono_images_cleanup (void)
{
GHashTableIter iter;
MonoImage *image;
mono_mutex_destroy (&images_mutex);
g_hash_table_iter_init (&iter, loaded_images_hash);
while (g_hash_table_iter_next (&iter, NULL, (void**)&image))
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly image '%s' still loaded at shutdown.", image->name);
g_hash_table_destroy (loaded_images_hash);
g_hash_table_destroy (loaded_images_refonly_hash);
mutex_inited = FALSE;
}
/**
* mono_image_ensure_section_idx:
* @image: The image we are operating on
* @section: section number that we will load/map into memory
*
* This routine makes sure that we have an in-memory copy of
* an image section (.text, .rsrc, .data).
*
* Returns: TRUE on success
*/
int
mono_image_ensure_section_idx (MonoImage *image, int section)
{
MonoCLIImageInfo *iinfo = image->image_info;
MonoSectionTable *sect;
gboolean writable;
g_return_val_if_fail (section < iinfo->cli_section_count, FALSE);
if (iinfo->cli_sections [section] != NULL)
return TRUE;
sect = &iinfo->cli_section_tables [section];
writable = sect->st_flags & SECT_FLAGS_MEM_WRITE;
if (sect->st_raw_data_ptr + sect->st_raw_data_size > image->raw_data_len)
return FALSE;
#ifdef HOST_WIN32
if (image->is_module_handle)
iinfo->cli_sections [section] = image->raw_data + sect->st_virtual_address;
else
#endif
/* FIXME: we ignore the writable flag since we don't patch the binary */
iinfo->cli_sections [section] = image->raw_data + sect->st_raw_data_ptr;
return TRUE;
}
/**
* mono_image_ensure_section:
* @image: The image we are operating on
* @section: section name that we will load/map into memory
*
* This routine makes sure that we have an in-memory copy of
* an image section (.text, .rsrc, .data).
*
* Returns: TRUE on success
*/
int
mono_image_ensure_section (MonoImage *image, const char *section)
{
MonoCLIImageInfo *ii = image->image_info;
int i;
for (i = 0; i < ii->cli_section_count; i++){
if (strncmp (ii->cli_section_tables [i].st_name, section, 8) != 0)
continue;
return mono_image_ensure_section_idx (image, i);
}
return FALSE;
}
static int
load_section_tables (MonoImage *image, MonoCLIImageInfo *iinfo, guint32 offset)
{
const int top = iinfo->cli_header.coff.coff_sections;
int i;
iinfo->cli_section_count = top;
iinfo->cli_section_tables = g_new0 (MonoSectionTable, top);
iinfo->cli_sections = g_new0 (void *, top);
for (i = 0; i < top; i++){
MonoSectionTable *t = &iinfo->cli_section_tables [i];
if (offset + sizeof (MonoSectionTable) > image->raw_data_len)
return FALSE;
memcpy (t, image->raw_data + offset, sizeof (MonoSectionTable));
offset += sizeof (MonoSectionTable);
#if G_BYTE_ORDER != G_LITTLE_ENDIAN
t->st_virtual_size = GUINT32_FROM_LE (t->st_virtual_size);
t->st_virtual_address = GUINT32_FROM_LE (t->st_virtual_address);
t->st_raw_data_size = GUINT32_FROM_LE (t->st_raw_data_size);
t->st_raw_data_ptr = GUINT32_FROM_LE (t->st_raw_data_ptr);
t->st_reloc_ptr = GUINT32_FROM_LE (t->st_reloc_ptr);
t->st_lineno_ptr = GUINT32_FROM_LE (t->st_lineno_ptr);
t->st_reloc_count = GUINT16_FROM_LE (t->st_reloc_count);
t->st_line_count = GUINT16_FROM_LE (t->st_line_count);
t->st_flags = GUINT32_FROM_LE (t->st_flags);
#endif
/* consistency checks here */
}
return TRUE;
}
static gboolean
load_cli_header (MonoImage *image, MonoCLIImageInfo *iinfo)
{
guint32 offset;
offset = mono_cli_rva_image_map (image, iinfo->cli_header.datadir.pe_cli_header.rva);
if (offset == INVALID_ADDRESS)
return FALSE;
if (offset + sizeof (MonoCLIHeader) > image->raw_data_len)
return FALSE;
memcpy (&iinfo->cli_cli_header, image->raw_data + offset, sizeof (MonoCLIHeader));
#if G_BYTE_ORDER != G_LITTLE_ENDIAN
#define SWAP32(x) (x) = GUINT32_FROM_LE ((x))
#define SWAP16(x) (x) = GUINT16_FROM_LE ((x))
#define SWAPPDE(x) do { (x).rva = GUINT32_FROM_LE ((x).rva); (x).size = GUINT32_FROM_LE ((x).size);} while (0)
SWAP32 (iinfo->cli_cli_header.ch_size);
SWAP32 (iinfo->cli_cli_header.ch_flags);
SWAP32 (iinfo->cli_cli_header.ch_entry_point);
SWAP16 (iinfo->cli_cli_header.ch_runtime_major);
SWAP16 (iinfo->cli_cli_header.ch_runtime_minor);
SWAPPDE (iinfo->cli_cli_header.ch_metadata);
SWAPPDE (iinfo->cli_cli_header.ch_resources);
SWAPPDE (iinfo->cli_cli_header.ch_strong_name);
SWAPPDE (iinfo->cli_cli_header.ch_code_manager_table);
SWAPPDE (iinfo->cli_cli_header.ch_vtable_fixups);
SWAPPDE (iinfo->cli_cli_header.ch_export_address_table_jumps);
SWAPPDE (iinfo->cli_cli_header.ch_eeinfo_table);
SWAPPDE (iinfo->cli_cli_header.ch_helper_table);
SWAPPDE (iinfo->cli_cli_header.ch_dynamic_info);
SWAPPDE (iinfo->cli_cli_header.ch_delay_load_info);
SWAPPDE (iinfo->cli_cli_header.ch_module_image);
SWAPPDE (iinfo->cli_cli_header.ch_external_fixups);
SWAPPDE (iinfo->cli_cli_header.ch_ridmap);
SWAPPDE (iinfo->cli_cli_header.ch_debug_map);
SWAPPDE (iinfo->cli_cli_header.ch_ip_map);
#undef SWAP32
#undef SWAP16
#undef SWAPPDE
#endif
/* Catch new uses of the fields that are supposed to be zero */
if ((iinfo->cli_cli_header.ch_eeinfo_table.rva != 0) ||
(iinfo->cli_cli_header.ch_helper_table.rva != 0) ||
(iinfo->cli_cli_header.ch_dynamic_info.rva != 0) ||
(iinfo->cli_cli_header.ch_delay_load_info.rva != 0) ||
(iinfo->cli_cli_header.ch_module_image.rva != 0) ||
(iinfo->cli_cli_header.ch_external_fixups.rva != 0) ||
(iinfo->cli_cli_header.ch_ridmap.rva != 0) ||
(iinfo->cli_cli_header.ch_debug_map.rva != 0) ||
(iinfo->cli_cli_header.ch_ip_map.rva != 0)){
/*
* No need to scare people who are testing this, I am just
* labelling this as a LAMESPEC
*/
/* g_warning ("Some fields in the CLI header which should have been zero are not zero"); */
}
return TRUE;
}
static gboolean
load_metadata_ptrs (MonoImage *image, MonoCLIImageInfo *iinfo)
{
guint32 offset, size;
guint16 streams;
int i;
guint32 pad;
char *ptr;
offset = mono_cli_rva_image_map (image, iinfo->cli_cli_header.ch_metadata.rva);
if (offset == INVALID_ADDRESS)
return FALSE;
size = iinfo->cli_cli_header.ch_metadata.size;
if (offset + size > image->raw_data_len)
return FALSE;
image->raw_metadata = image->raw_data + offset;
/* 24.2.1: Metadata root starts here */
ptr = image->raw_metadata;
if (strncmp (ptr, "BSJB", 4) == 0){
guint32 version_string_len;
ptr += 4;
image->md_version_major = read16 (ptr);
ptr += 2;
image->md_version_minor = read16 (ptr);
ptr += 6;
version_string_len = read32 (ptr);
ptr += 4;
image->version = g_strndup (ptr, version_string_len);
ptr += version_string_len;
pad = ptr - image->raw_metadata;
if (pad % 4)
ptr += 4 - (pad % 4);
} else
return FALSE;
/* skip over flags */
ptr += 2;
streams = read16 (ptr);
ptr += 2;
for (i = 0; i < streams; i++){
if (strncmp (ptr + 8, "#~", 3) == 0){
image->heap_tables.data = image->raw_metadata + read32 (ptr);
image->heap_tables.size = read32 (ptr + 4);
ptr += 8 + 3;
} else if (strncmp (ptr + 8, "#Strings", 9) == 0){
image->heap_strings.data = image->raw_metadata + read32 (ptr);
image->heap_strings.size = read32 (ptr + 4);
ptr += 8 + 9;
} else if (strncmp (ptr + 8, "#US", 4) == 0){
image->heap_us.data = image->raw_metadata + read32 (ptr);
image->heap_us.size = read32 (ptr + 4);
ptr += 8 + 4;
} else if (strncmp (ptr + 8, "#Blob", 6) == 0){
image->heap_blob.data = image->raw_metadata + read32 (ptr);
image->heap_blob.size = read32 (ptr + 4);
ptr += 8 + 6;
} else if (strncmp (ptr + 8, "#GUID", 6) == 0){
image->heap_guid.data = image->raw_metadata + read32 (ptr);
image->heap_guid.size = read32 (ptr + 4);
ptr += 8 + 6;
} else if (strncmp (ptr + 8, "#-", 3) == 0) {
image->heap_tables.data = image->raw_metadata + read32 (ptr);
image->heap_tables.size = read32 (ptr + 4);
ptr += 8 + 3;
image->uncompressed_metadata = TRUE;
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly '%s' has the non-standard metadata heap #-.\nRecompile it correctly (without the /incremental switch or in Release mode).\n", image->name);
} else {
g_message ("Unknown heap type: %s\n", ptr + 8);
ptr += 8 + strlen (ptr + 8) + 1;
}
pad = ptr - image->raw_metadata;
if (pad % 4)
ptr += 4 - (pad % 4);
}
g_assert (image->heap_guid.data);
g_assert (image->heap_guid.size >= 16);
image->guid = mono_guid_to_string ((guint8*)image->heap_guid.data);
return TRUE;
}
/*
* Load representation of logical metadata tables, from the "#~" stream
*/
static gboolean
load_tables (MonoImage *image)
{
const char *heap_tables = image->heap_tables.data;
const guint32 *rows;
guint64 valid_mask, sorted_mask;
int valid = 0, table;
int heap_sizes;
heap_sizes = heap_tables [6];
image->idx_string_wide = ((heap_sizes & 0x01) == 1);
image->idx_guid_wide = ((heap_sizes & 0x02) == 2);
image->idx_blob_wide = ((heap_sizes & 0x04) == 4);
valid_mask = read64 (heap_tables + 8);
sorted_mask = read64 (heap_tables + 16);
rows = (const guint32 *) (heap_tables + 24);
for (table = 0; table < 64; table++){
if ((valid_mask & ((guint64) 1 << table)) == 0){
if (table > MONO_TABLE_LAST)
continue;
image->tables [table].rows = 0;
continue;
}
if (table > MONO_TABLE_LAST) {
g_warning("bits in valid must be zero above 0x2d (II - 23.1.6)");
} else {
image->tables [table].rows = read32 (rows);
}
/*if ((sorted_mask & ((guint64) 1 << table)) == 0){
g_print ("table %s (0x%02x) is sorted\n", mono_meta_table_name (table), table);
}*/
rows++;
valid++;
}
image->tables_base = (heap_tables + 24) + (4 * valid);
/* They must be the same */
g_assert ((const void *) image->tables_base == (const void *) rows);
mono_metadata_compute_table_bases (image);
return TRUE;
}
static gboolean
load_metadata (MonoImage *image, MonoCLIImageInfo *iinfo)
{
if (!load_metadata_ptrs (image, iinfo))
return FALSE;
return load_tables (image);
}
void
mono_image_check_for_module_cctor (MonoImage *image)
{
MonoTableInfo *t, *mt;
t = &image->tables [MONO_TABLE_TYPEDEF];
mt = &image->tables [MONO_TABLE_METHOD];
if (image_is_dynamic (image)) {
/* FIXME: */
image->checked_module_cctor = TRUE;
return;
}
if (t->rows >= 1) {
guint32 nameidx = mono_metadata_decode_row_col (t, 0, MONO_TYPEDEF_NAME);
const char *name = mono_metadata_string_heap (image, nameidx);
if (strcmp (name, "<Module>") == 0) {
guint32 first_method = mono_metadata_decode_row_col (t, 0, MONO_TYPEDEF_METHOD_LIST) - 1;
guint32 last_method;
if (t->rows > 1)
last_method = mono_metadata_decode_row_col (t, 1, MONO_TYPEDEF_METHOD_LIST) - 1;
else
last_method = mt->rows;
for (; first_method < last_method; first_method++) {
nameidx = mono_metadata_decode_row_col (mt, first_method, MONO_METHOD_NAME);
name = mono_metadata_string_heap (image, nameidx);
if (strcmp (name, ".cctor") == 0) {
image->has_module_cctor = TRUE;
image->checked_module_cctor = TRUE;
return;
}
}
}
}
image->has_module_cctor = FALSE;
image->checked_module_cctor = TRUE;
}
static void
load_modules (MonoImage *image)
{
MonoTableInfo *t;
if (image->modules)
return;
t = &image->tables [MONO_TABLE_MODULEREF];
image->modules = g_new0 (MonoImage *, t->rows);
image->modules_loaded = g_new0 (gboolean, t->rows);
image->module_count = t->rows;
}
/**
* mono_image_load_module:
*
* Load the module with the one-based index IDX from IMAGE and return it. Return NULL if
* it cannot be loaded.
*/
MonoImage*
mono_image_load_module (MonoImage *image, int idx)
{
MonoTableInfo *t;
MonoTableInfo *file_table;
int i;
char *base_dir;
gboolean refonly = image->ref_only;
GList *list_iter, *valid_modules = NULL;
MonoImageOpenStatus status;
if ((image->module_count == 0) || (idx > image->module_count || idx <= 0))
return NULL;
if (image->modules_loaded [idx - 1])
return image->modules [idx - 1];
file_table = &image->tables [MONO_TABLE_FILE];
for (i = 0; i < file_table->rows; i++) {
guint32 cols [MONO_FILE_SIZE];
mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
continue;
valid_modules = g_list_prepend (valid_modules, (char*)mono_metadata_string_heap (image, cols [MONO_FILE_NAME]));
}
t = &image->tables [MONO_TABLE_MODULEREF];
base_dir = g_path_get_dirname (image->name);
{
char *module_ref;
const char *name;
guint32 cols [MONO_MODULEREF_SIZE];
/* if there is no file table, we try to load the module... */
int valid = file_table->rows == 0;
mono_metadata_decode_row (t, idx - 1, cols, MONO_MODULEREF_SIZE);
name = mono_metadata_string_heap (image, cols [MONO_MODULEREF_NAME]);
for (list_iter = valid_modules; list_iter; list_iter = list_iter->next) {
/* be safe with string dups, but we could just compare string indexes */
if (strcmp (list_iter->data, name) == 0) {
valid = TRUE;
break;
}
}
if (valid) {
module_ref = g_build_filename (base_dir, name, NULL);
image->modules [idx - 1] = mono_image_open_full (module_ref, &status, refonly);
if (image->modules [idx - 1]) {
mono_image_addref (image->modules [idx - 1]);
image->modules [idx - 1]->assembly = image->assembly;
#ifdef HOST_WIN32
if (image->modules [idx - 1]->is_module_handle)
mono_image_fixup_vtable (image->modules [idx - 1]);
#endif
/* g_print ("loaded module %s from %s (%p)\n", module_ref, image->name, image->assembly); */
}
g_free (module_ref);
}
}
image->modules_loaded [idx - 1] = TRUE;
g_free (base_dir);
g_list_free (valid_modules);
return image->modules [idx - 1];
}
static gpointer
class_key_extract (gpointer value)
{
MonoClass *class = value;
return GUINT_TO_POINTER (class->type_token);
}
static gpointer*
class_next_value (gpointer value)
{
MonoClass *class = value;
return (gpointer*)&class->next_class_cache;
}
void
mono_image_init (MonoImage *image)
{
mono_mutex_init_recursive (&image->lock);
mono_mutex_init_recursive (&image->szarray_cache_lock);
image->mempool = mono_mempool_new_size (512);
mono_internal_hash_table_init (&image->class_cache,
g_direct_hash,
class_key_extract,
class_next_value);
image->field_cache = mono_conc_hashtable_new (&image->lock, NULL, NULL);
image->typespec_cache = g_hash_table_new (NULL, NULL);
image->memberref_signatures = g_hash_table_new (NULL, NULL);
image->helper_signatures = g_hash_table_new (g_str_hash, g_str_equal);
image->method_signatures = g_hash_table_new (NULL, NULL);
image->property_hash = mono_property_hash_new ();
}
#if G_BYTE_ORDER != G_LITTLE_ENDIAN
#define SWAP64(x) (x) = GUINT64_FROM_LE ((x))
#define SWAP32(x) (x) = GUINT32_FROM_LE ((x))
#define SWAP16(x) (x) = GUINT16_FROM_LE ((x))
#define SWAPPDE(x) do { (x).rva = GUINT32_FROM_LE ((x).rva); (x).size = GUINT32_FROM_LE ((x).size);} while (0)
#else
#define SWAP64(x)
#define SWAP32(x)
#define SWAP16(x)
#define SWAPPDE(x)
#endif
/*
* Returns < 0 to indicate an error.
*/
static int
do_load_header (MonoImage *image, MonoDotNetHeader *header, int offset)
{
MonoDotNetHeader64 header64;
#ifdef HOST_WIN32
if (!image->is_module_handle)
#endif
if (offset + sizeof (MonoDotNetHeader32) > image->raw_data_len)
return -1;
memcpy (header, image->raw_data + offset, sizeof (MonoDotNetHeader));
if (header->pesig [0] != 'P' || header->pesig [1] != 'E')
return -1;
/* endian swap the fields common between PE and PE+ */
SWAP32 (header->coff.coff_time);
SWAP32 (header->coff.coff_symptr);
SWAP32 (header->coff.coff_symcount);
SWAP16 (header->coff.coff_machine);
SWAP16 (header->coff.coff_sections);
SWAP16 (header->coff.coff_opt_header_size);
SWAP16 (header->coff.coff_attributes);
/* MonoPEHeader */
SWAP32 (header->pe.pe_code_size);
SWAP32 (header->pe.pe_uninit_data_size);
SWAP32 (header->pe.pe_rva_entry_point);
SWAP32 (header->pe.pe_rva_code_base);
SWAP32 (header->pe.pe_rva_data_base);
SWAP16 (header->pe.pe_magic);
/* now we are ready for the basic tests */
if (header->pe.pe_magic == 0x10B) {
offset += sizeof (MonoDotNetHeader);
SWAP32 (header->pe.pe_data_size);
if (header->coff.coff_opt_header_size != (sizeof (MonoDotNetHeader) - sizeof (MonoCOFFHeader) - 4))
return -1;
SWAP32 (header->nt.pe_image_base); /* must be 0x400000 */
SWAP32 (header->nt.pe_stack_reserve);
SWAP32 (header->nt.pe_stack_commit);
SWAP32 (header->nt.pe_heap_reserve);
SWAP32 (header->nt.pe_heap_commit);
} else if (header->pe.pe_magic == 0x20B) {
/* PE32+ file format */
if (header->coff.coff_opt_header_size != (sizeof (MonoDotNetHeader64) - sizeof (MonoCOFFHeader) - 4))
return -1;
memcpy (&header64, image->raw_data + offset, sizeof (MonoDotNetHeader64));
offset += sizeof (MonoDotNetHeader64);
/* copy the fields already swapped. the last field, pe_data_size, is missing */
memcpy (&header64, header, sizeof (MonoDotNetHeader) - 4);
/* FIXME: we lose bits here, but we don't use this stuff internally, so we don't care much.
* will be fixed when we change MonoDotNetHeader to not match the 32 bit variant
*/
SWAP64 (header64.nt.pe_image_base);
header->nt.pe_image_base = header64.nt.pe_image_base;
SWAP64 (header64.nt.pe_stack_reserve);
header->nt.pe_stack_reserve = header64.nt.pe_stack_reserve;
SWAP64 (header64.nt.pe_stack_commit);
header->nt.pe_stack_commit = header64.nt.pe_stack_commit;
SWAP64 (header64.nt.pe_heap_reserve);
header->nt.pe_heap_reserve = header64.nt.pe_heap_reserve;
SWAP64 (header64.nt.pe_heap_commit);
header->nt.pe_heap_commit = header64.nt.pe_heap_commit;
header->nt.pe_section_align = header64.nt.pe_section_align;
header->nt.pe_file_alignment = header64.nt.pe_file_alignment;
header->nt.pe_os_major = header64.nt.pe_os_major;
header->nt.pe_os_minor = header64.nt.pe_os_minor;
header->nt.pe_user_major = header64.nt.pe_user_major;
header->nt.pe_user_minor = header64.nt.pe_user_minor;
header->nt.pe_subsys_major = header64.nt.pe_subsys_major;
header->nt.pe_subsys_minor = header64.nt.pe_subsys_minor;
header->nt.pe_reserved_1 = header64.nt.pe_reserved_1;
header->nt.pe_image_size = header64.nt.pe_image_size;
header->nt.pe_header_size = header64.nt.pe_header_size;
header->nt.pe_checksum = header64.nt.pe_checksum;
header->nt.pe_subsys_required = header64.nt.pe_subsys_required;
header->nt.pe_dll_flags = header64.nt.pe_dll_flags;
header->nt.pe_loader_flags = header64.nt.pe_loader_flags;
header->nt.pe_data_dir_count = header64.nt.pe_data_dir_count;
/* copy the datadir */
memcpy (&header->datadir, &header64.datadir, sizeof (MonoPEDatadir));
} else {
return -1;
}
/* MonoPEHeaderNT: not used yet */
SWAP32 (header->nt.pe_section_align); /* must be 8192 */
SWAP32 (header->nt.pe_file_alignment); /* must be 512 or 4096 */
SWAP16 (header->nt.pe_os_major); /* must be 4 */
SWAP16 (header->nt.pe_os_minor); /* must be 0 */
SWAP16 (header->nt.pe_user_major);
SWAP16 (header->nt.pe_user_minor);
SWAP16 (header->nt.pe_subsys_major);
SWAP16 (header->nt.pe_subsys_minor);
SWAP32 (header->nt.pe_reserved_1);
SWAP32 (header->nt.pe_image_size);
SWAP32 (header->nt.pe_header_size);
SWAP32 (header->nt.pe_checksum);
SWAP16 (header->nt.pe_subsys_required);
SWAP16 (header->nt.pe_dll_flags);
SWAP32 (header->nt.pe_loader_flags);
SWAP32 (header->nt.pe_data_dir_count);
/* MonoDotNetHeader: mostly unused */
SWAPPDE (header->datadir.pe_export_table);
SWAPPDE (header->datadir.pe_import_table);
SWAPPDE (header->datadir.pe_resource_table);
SWAPPDE (header->datadir.pe_exception_table);
SWAPPDE (header->datadir.pe_certificate_table);
SWAPPDE (header->datadir.pe_reloc_table);
SWAPPDE (header->datadir.pe_debug);
SWAPPDE (header->datadir.pe_copyright);
SWAPPDE (header->datadir.pe_global_ptr);
SWAPPDE (header->datadir.pe_tls_table);
SWAPPDE (header->datadir.pe_load_config_table);
SWAPPDE (header->datadir.pe_bound_import);
SWAPPDE (header->datadir.pe_iat);
SWAPPDE (header->datadir.pe_delay_import_desc);
SWAPPDE (header->datadir.pe_cli_header);
SWAPPDE (header->datadir.pe_reserved);
#ifdef HOST_WIN32
if (image->is_module_handle)
image->raw_data_len = header->nt.pe_image_size;
#endif
return offset;
}
gboolean
mono_image_load_pe_data (MonoImage *image)
{
MonoCLIImageInfo *iinfo;
MonoDotNetHeader *header;
MonoMSDOSHeader msdos;
gint32 offset = 0;
iinfo = image->image_info;
header = &iinfo->cli_header;
#ifdef HOST_WIN32
if (!image->is_module_handle)
#endif
if (offset + sizeof (msdos) > image->raw_data_len)
goto invalid_image;
memcpy (&msdos, image->raw_data + offset, sizeof (msdos));
if (!(msdos.msdos_sig [0] == 'M' && msdos.msdos_sig [1] == 'Z'))
goto invalid_image;
msdos.pe_offset = GUINT32_FROM_LE (msdos.pe_offset);
offset = msdos.pe_offset;
offset = do_load_header (image, header, offset);
if (offset < 0)
goto invalid_image;
/*
* this tests for a x86 machine type, but itanium, amd64 and others could be used, too.
* we skip this test.
if (header->coff.coff_machine != 0x14c)
goto invalid_image;
*/
#if 0
/*
* The spec says that this field should contain 6.0, but Visual Studio includes a new compiler,
* which produces binaries with 7.0. From Sergey:
*
* The reason is that MSVC7 uses traditional compile/link
* sequence for CIL executables, and VS.NET (and Framework
* SDK) includes linker version 7, that puts 7.0 in this
* field. That's why it's currently not possible to load VC
* binaries with Mono. This field is pretty much meaningless
* anyway (what linker?).
*/
if (header->pe.pe_major != 6 || header->pe.pe_minor != 0)
goto invalid_image;
#endif
/*
* FIXME: byte swap all addresses here for header.
*/
if (!load_section_tables (image, iinfo, offset))
goto invalid_image;
return TRUE;
invalid_image:
return FALSE;
}
gboolean
mono_image_load_cli_data (MonoImage *image)
{
MonoCLIImageInfo *iinfo;
MonoDotNetHeader *header;
iinfo = image->image_info;
header = &iinfo->cli_header;
/* Load the CLI header */
if (!load_cli_header (image, iinfo))
return FALSE;
if (!load_metadata (image, iinfo))
return FALSE;
return TRUE;
}
void
mono_image_load_names (MonoImage *image)
{
/* modules don't have an assembly table row */
if (image->tables [MONO_TABLE_ASSEMBLY].rows) {
image->assembly_name = mono_metadata_string_heap (image,
mono_metadata_decode_row_col (&image->tables [MONO_TABLE_ASSEMBLY],
0, MONO_ASSEMBLY_NAME));
}
image->module_name = mono_metadata_string_heap (image,
mono_metadata_decode_row_col (&image->tables [MONO_TABLE_MODULE],
0, MONO_MODULE_NAME));
}
static MonoImage *
do_mono_image_load (MonoImage *image, MonoImageOpenStatus *status,
gboolean care_about_cli, gboolean care_about_pecoff)
{
MonoCLIImageInfo *iinfo;
MonoDotNetHeader *header;
GSList *errors = NULL;
mono_profiler_module_event (image, MONO_PROFILE_START_LOAD);
mono_image_init (image);
iinfo = image->image_info;
header = &iinfo->cli_header;
if (status)
*status = MONO_IMAGE_IMAGE_INVALID;
if (care_about_pecoff == FALSE)
goto done;
if (!mono_verifier_verify_pe_data (image, &errors))
goto invalid_image;
if (!mono_image_load_pe_data (image))
goto invalid_image;
if (care_about_cli == FALSE) {
goto done;
}
if (!mono_verifier_verify_cli_data (image, &errors))
goto invalid_image;
if (!mono_image_load_cli_data (image))
goto invalid_image;
if (!mono_verifier_verify_table_data (image, &errors))
goto invalid_image;
mono_image_load_names (image);
load_modules (image);
done:
mono_profiler_module_loaded (image, MONO_PROFILE_OK);
if (status)
*status = MONO_IMAGE_OK;
return image;
invalid_image:
if (errors) {
MonoVerifyInfo *info = errors->data;
g_warning ("Could not load image %s due to %s", image->name, info->message);
mono_free_verify_list (errors);
}
mono_profiler_module_loaded (image, MONO_PROFILE_FAILED);
mono_image_close (image);
return NULL;
}
static MonoImage *
do_mono_image_open (const char *fname, MonoImageOpenStatus *status,
gboolean care_about_cli, gboolean care_about_pecoff, gboolean refonly)
{
MonoCLIImageInfo *iinfo;
MonoImage *image;
MonoFileMap *filed;
if ((filed = mono_file_map_open (fname)) == NULL){
if (IS_PORTABILITY_SET) {
gchar *ffname = mono_portability_find_file (fname, TRUE);
if (ffname) {
filed = mono_file_map_open (ffname);
g_free (ffname);
}
}
if (filed == NULL) {
if (status)
*status = MONO_IMAGE_ERROR_ERRNO;
return NULL;
}
}
image = g_new0 (MonoImage, 1);
image->raw_buffer_used = TRUE;
image->raw_data_len = mono_file_map_size (filed);
image->raw_data = mono_file_map (image->raw_data_len, MONO_MMAP_READ|MONO_MMAP_PRIVATE, mono_file_map_fd (filed), 0, &image->raw_data_handle);
#if defined(HAVE_MMAP) && !defined (HOST_WIN32)
if (!image->raw_data) {
image->fileio_used = TRUE;
image->raw_data = mono_file_map_fileio (image->raw_data_len, MONO_MMAP_READ|MONO_MMAP_PRIVATE, mono_file_map_fd (filed), 0, &image->raw_data_handle);
}
#endif
if (!image->raw_data) {
mono_file_map_close (filed);
g_free (image);
if (status)
*status = MONO_IMAGE_IMAGE_INVALID;
return NULL;
}
iinfo = g_new0 (MonoCLIImageInfo, 1);
image->image_info = iinfo;
image->name = mono_path_resolve_symlinks (fname);
image->ref_only = refonly;
image->ref_count = 1;
/* if MONO_SECURITY_MODE_CORE_CLR is set then determine if this image is platform code */
image->core_clr_platform_code = mono_security_core_clr_determine_platform_image (image);
mono_file_map_close (filed);
return do_mono_image_load (image, status, care_about_cli, care_about_pecoff);
}
MonoImage *
mono_image_loaded_full (const char *name, gboolean refonly)
{
MonoImage *res;
GHashTable *loaded_images = refonly ? loaded_images_refonly_hash : loaded_images_hash;
mono_images_lock ();
res = g_hash_table_lookup (loaded_images, name);
mono_images_unlock ();
return res;
}
/**
* mono_image_loaded:
* @name: name of the image to load
*
* This routine ensures that the given image is loaded.
*
* Returns: the loaded MonoImage, or NULL on failure.
*/
MonoImage *
mono_image_loaded (const char *name)
{
return mono_image_loaded_full (name, FALSE);
}
typedef struct {
MonoImage *res;
const char* guid;
} GuidData;
static void
find_by_guid (gpointer key, gpointer val, gpointer user_data)
{
GuidData *data = user_data;
MonoImage *image;
if (data->res)
return;
image = val;
if (strcmp (data->guid, mono_image_get_guid (image)) == 0)
data->res = image;
}
MonoImage *
mono_image_loaded_by_guid_full (const char *guid, gboolean refonly)
{
GuidData data;
GHashTable *loaded_images = refonly ? loaded_images_refonly_hash : loaded_images_hash;
data.res = NULL;
data.guid = guid;
mono_images_lock ();
g_hash_table_foreach (loaded_images, find_by_guid, &data);
mono_images_unlock ();
return data.res;
}
MonoImage *
mono_image_loaded_by_guid (const char *guid)
{
return mono_image_loaded_by_guid_full (guid, FALSE);
}
static MonoImage *
register_image (MonoImage *image)
{
MonoImage *image2;
GHashTable *loaded_images = image->ref_only ? loaded_images_refonly_hash : loaded_images_hash;
mono_images_lock ();
image2 = g_hash_table_lookup (loaded_images, image->name);
if (image2) {
/* Somebody else beat us to it */
mono_image_addref (image2);
mono_images_unlock ();
mono_image_close (image);
return image2;
}
g_hash_table_insert (loaded_images, image->name, image);
if (image->assembly_name && (g_hash_table_lookup (loaded_images, image->assembly_name) == NULL))
g_hash_table_insert (loaded_images, (char *) image->assembly_name, image);
mono_images_unlock ();
return image;
}
MonoImage *
mono_image_open_from_data_with_name (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status, gboolean refonly, const char *name)
{
MonoCLIImageInfo *iinfo;
MonoImage *image;
char *datac;
if (!data || !data_len) {
if (status)
*status = MONO_IMAGE_IMAGE_INVALID;
return NULL;
}
datac = data;
if (need_copy) {
datac = g_try_malloc (data_len);
if (!datac) {
if (status)
*status = MONO_IMAGE_ERROR_ERRNO;
return NULL;
}
memcpy (datac, data, data_len);
}
image = g_new0 (MonoImage, 1);
image->raw_data = datac;
image->raw_data_len = data_len;
image->raw_data_allocated = need_copy;
image->name = (name == NULL) ? g_strdup_printf ("data-%p", datac) : g_strdup(name);
iinfo = g_new0 (MonoCLIImageInfo, 1);
image->image_info = iinfo;
image->ref_only = refonly;
image = do_mono_image_load (image, status, TRUE, TRUE);
if (image == NULL)
return NULL;
return register_image (image);
}
MonoImage *
mono_image_open_from_data_full (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status, gboolean refonly)
{
return mono_image_open_from_data_with_name (data, data_len, need_copy, status, refonly, NULL);
}
MonoImage *
mono_image_open_from_data (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status)
{
return mono_image_open_from_data_full (data, data_len, need_copy, status, FALSE);
}
#ifdef HOST_WIN32
/* fname is not duplicated. */
MonoImage*
mono_image_open_from_module_handle (HMODULE module_handle, char* fname, gboolean has_entry_point, MonoImageOpenStatus* status)
{
MonoImage* image;
MonoCLIImageInfo* iinfo;
image = g_new0 (MonoImage, 1);
image->raw_data = (char*) module_handle;
image->is_module_handle = TRUE;
iinfo = g_new0 (MonoCLIImageInfo, 1);
image->image_info = iinfo;
image->name = fname;
image->ref_count = has_entry_point ? 0 : 1;
image->has_entry_point = has_entry_point;
image = do_mono_image_load (image, status, TRUE, TRUE);
if (image == NULL)
return NULL;
return register_image (image);
}
#endif
MonoImage *
mono_image_open_full (const char *fname, MonoImageOpenStatus *status, gboolean refonly)
{
MonoImage *image;
GHashTable *loaded_images;
char *absfname;
g_return_val_if_fail (fname != NULL, NULL);
#ifdef HOST_WIN32
/* Load modules using LoadLibrary. */
if (!refonly && coree_module_handle) {
HMODULE module_handle;
guint16 *fname_utf16;
DWORD last_error;
absfname = mono_path_resolve_symlinks (fname);
fname_utf16 = NULL;
/* There is little overhead because the OS loader lock is held by LoadLibrary. */
mono_images_lock ();
image = g_hash_table_lookup (loaded_images_hash, absfname);
if (image) {
g_assert (image->is_module_handle);
if (image->has_entry_point && image->ref_count == 0) {
/* Increment reference count on images loaded outside of the runtime. */
fname_utf16 = g_utf8_to_utf16 (absfname, -1, NULL, NULL, NULL);
/* The image is already loaded because _CorDllMain removes images from the hash. */
module_handle = LoadLibrary (fname_utf16);
g_assert (module_handle == (HMODULE) image->raw_data);
}
mono_image_addref (image);
mono_images_unlock ();
if (fname_utf16)
g_free (fname_utf16);
g_free (absfname);
return image;
}
fname_utf16 = g_utf8_to_utf16 (absfname, -1, NULL, NULL, NULL);
module_handle = MonoLoadImage (fname_utf16);
if (status && module_handle == NULL)
last_error = GetLastError ();
/* mono_image_open_from_module_handle is called by _CorDllMain. */
image = g_hash_table_lookup (loaded_images_hash, absfname);
if (image)
mono_image_addref (image);
mono_images_unlock ();
g_free (fname_utf16);
if (module_handle == NULL) {
g_assert (!image);
g_free (absfname);
if (status) {
if (last_error == ERROR_BAD_EXE_FORMAT || last_error == STATUS_INVALID_IMAGE_FORMAT)
*status = MONO_IMAGE_IMAGE_INVALID;
else {
if (last_error == ERROR_FILE_NOT_FOUND || last_error == ERROR_PATH_NOT_FOUND)
errno = ENOENT;
else
errno = 0;
}
}
return NULL;
}
if (image) {
g_assert (image->is_module_handle);
g_assert (image->has_entry_point);
g_free (absfname);
return image;
}
return mono_image_open_from_module_handle (module_handle, absfname, FALSE, status);
}
#endif
absfname = mono_path_canonicalize (fname);
/*
* The easiest solution would be to do all the loading inside the mutex,
* but that would lead to scalability problems. So we let the loading
* happen outside the mutex, and if multiple threads happen to load
* the same image, we discard all but the first copy.
*/
mono_images_lock ();
loaded_images = refonly ? loaded_images_refonly_hash : loaded_images_hash;
image = g_hash_table_lookup (loaded_images, absfname);
g_free (absfname);
if (image){
mono_image_addref (image);
mono_images_unlock ();
return image;
}
mono_images_unlock ();
image = do_mono_image_open (fname, status, TRUE, TRUE, refonly);
if (image == NULL)
return NULL;
return register_image (image);
}
/**
* mono_image_open:
* @fname: filename that points to the module we want to open
* @status: An error condition is returned in this field
*
* Returns: An open image of type %MonoImage or NULL on error.
* The caller holds a temporary reference to the returned image which should be cleared
* when no longer needed by calling mono_image_close ().
* if NULL, then check the value of @status for details on the error
*/
MonoImage *
mono_image_open (const char *fname, MonoImageOpenStatus *status)
{
return mono_image_open_full (fname, status, FALSE);
}
/**
* mono_pe_file_open:
* @fname: filename that points to the module we want to open
* @status: An error condition is returned in this field
*
* Returns: An open image of type %MonoImage or NULL on error. if
* NULL, then check the value of @status for details on the error.
* This variant for mono_image_open DOES NOT SET UP CLI METADATA.
* It's just a PE file loader, used for FileVersionInfo. It also does
* not use the image cache.
*/
MonoImage *
mono_pe_file_open (const char *fname, MonoImageOpenStatus *status)
{
g_return_val_if_fail (fname != NULL, NULL);
return(do_mono_image_open (fname, status, FALSE, TRUE, FALSE));
}
/**
* mono_image_open_raw
* @fname: filename that points to the module we want to open
* @status: An error condition is returned in this field
*
* Returns an image without loading neither pe or cli data.
*
* Use mono_image_load_pe_data and mono_image_load_cli_data to load them.
*/
MonoImage *
mono_image_open_raw (const char *fname, MonoImageOpenStatus *status)
{
g_return_val_if_fail (fname != NULL, NULL);
return(do_mono_image_open (fname, status, FALSE, FALSE, FALSE));
}
void
mono_image_fixup_vtable (MonoImage *image)
{
#ifdef HOST_WIN32
MonoCLIImageInfo *iinfo;
MonoPEDirEntry *de;
MonoVTableFixup *vtfixup;
int count;
gpointer slot;
guint16 slot_type;
int slot_count;
g_assert (image->is_module_handle);
iinfo = image->image_info;
de = &iinfo->cli_cli_header.ch_vtable_fixups;
if (!de->rva || !de->size)
return;
vtfixup = (MonoVTableFixup*) mono_image_rva_map (image, de->rva);
if (!vtfixup)
return;
count = de->size / sizeof (MonoVTableFixup);
while (count--) {
if (!vtfixup->rva || !vtfixup->count)
continue;
slot = mono_image_rva_map (image, vtfixup->rva);
g_assert (slot);
slot_type = vtfixup->type;
slot_count = vtfixup->count;
if (slot_type & VTFIXUP_TYPE_32BIT)
while (slot_count--) {
*((guint32*) slot) = (guint32) mono_marshal_get_vtfixup_ftnptr (image, *((guint32*) slot), slot_type);
slot = ((guint32*) slot) + 1;
}
else if (slot_type & VTFIXUP_TYPE_64BIT)
while (slot_count--) {
*((guint64*) slot) = (guint64) mono_marshal_get_vtfixup_ftnptr (image, *((guint64*) slot), slot_type);
slot = ((guint32*) slot) + 1;
}
else
g_assert_not_reached();
vtfixup++;
}
#else
g_assert_not_reached();
#endif
}
static void
free_hash_table (gpointer key, gpointer val, gpointer user_data)
{
g_hash_table_destroy ((GHashTable*)val);
}
/*
static void
free_mr_signatures (gpointer key, gpointer val, gpointer user_data)
{
mono_metadata_free_method_signature ((MonoMethodSignature*)val);
}
*/
static void
free_array_cache_entry (gpointer key, gpointer val, gpointer user_data)
{
g_slist_free ((GSList*)val);
}
/**
* mono_image_addref:
* @image: The image file we wish to add a reference to
*
* Increases the reference count of an image.
*/
void
mono_image_addref (MonoImage *image)
{
InterlockedIncrement (&image->ref_count);
}
void
mono_dynamic_stream_reset (MonoDynamicStream* stream)
{
stream->alloc_size = stream->index = stream->offset = 0;
g_free (stream->data);
stream->data = NULL;
if (stream->hash) {
g_hash_table_destroy (stream->hash);
stream->hash = NULL;
}
}
static inline void
free_hash (GHashTable *hash)
{
if (hash)
g_hash_table_destroy (hash);
}
/*
* Returns whether mono_image_close_finish() must be called as well.
* We must unload images in two steps because clearing the domain in
* SGen requires the class metadata to be intact, but we need to free
* the mono_g_hash_tables in case a collection occurs during domain
* unloading and the roots would trip up the GC.
*/
gboolean
mono_image_close_except_pools (MonoImage *image)
{
MonoImage *image2;
GHashTable *loaded_images;
int i;
g_return_val_if_fail (image != NULL, FALSE);
/*
* Atomically decrement the refcount and remove ourselves from the hash tables, so
* register_image () can't grab an image which is being closed.
*/
mono_images_lock ();
if (InterlockedDecrement (&image->ref_count) > 0) {
mono_images_unlock ();
return FALSE;
}
loaded_images = image->ref_only ? loaded_images_refonly_hash : loaded_images_hash;
image2 = g_hash_table_lookup (loaded_images, image->name);
if (image == image2) {
/* This is not true if we are called from mono_image_open () */
g_hash_table_remove (loaded_images, image->name);
}
if (image->assembly_name && (g_hash_table_lookup (loaded_images, image->assembly_name) == image))
g_hash_table_remove (loaded_images, (char *) image->assembly_name);
mono_images_unlock ();
#ifdef HOST_WIN32
if (image->is_module_handle && image->has_entry_point) {
mono_images_lock ();
if (image->ref_count == 0) {
/* Image will be closed by _CorDllMain. */
FreeLibrary ((HMODULE) image->raw_data);
mono_images_unlock ();
return FALSE;
}
mono_images_unlock ();
}
#endif
mono_profiler_module_event (image, MONO_PROFILE_START_UNLOAD);
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Unloading image %s [%p].", image->name, image);
mono_image_invoke_unload_hook (image);
mono_metadata_clean_for_image (image);
/*
* The caches inside a MonoImage might refer to metadata which is stored in referenced
* assemblies, so we can't release these references in mono_assembly_close () since the
* MonoImage might outlive its associated MonoAssembly.
*/
if (image->references && !image_is_dynamic (image)) {
for (i = 0; i < image->nreferences; i++) {
if (image->references [i] && image->references [i] != REFERENCE_MISSING) {
if (!mono_assembly_close_except_image_pools (image->references [i]))
image->references [i] = NULL;
}
}
} else {
if (image->references) {
g_free (image->references);
image->references = NULL;
}
}
#ifdef HOST_WIN32
mono_images_lock ();
if (image->is_module_handle && !image->has_entry_point)
FreeLibrary ((HMODULE) image->raw_data);
mono_images_unlock ();
#endif
if (image->raw_buffer_used) {
if (image->raw_data != NULL) {
#ifndef HOST_WIN32
if (image->fileio_used)
mono_file_unmap_fileio (image->raw_data, image->raw_data_handle);
else
#endif
mono_file_unmap (image->raw_data, image->raw_data_handle);
}
}
if (image->raw_data_allocated) {
/* FIXME: do we need this? (image is disposed anyway) */
/* image->raw_metadata and cli_sections might lie inside image->raw_data */
MonoCLIImageInfo *ii = image->image_info;
if ((image->raw_metadata > image->raw_data) &&
(image->raw_metadata <= (image->raw_data + image->raw_data_len)))
image->raw_metadata = NULL;
for (i = 0; i < ii->cli_section_count; i++)
if (((char*)(ii->cli_sections [i]) > image->raw_data) &&
((char*)(ii->cli_sections [i]) <= ((char*)image->raw_data + image->raw_data_len)))
ii->cli_sections [i] = NULL;
g_free (image->raw_data);
}
if (debug_assembly_unload) {
image->name = g_strdup_printf ("%s - UNLOADED", image->name);
} else {
g_free (image->name);
g_free (image->guid);
g_free (image->version);
g_free (image->files);
}
if (image->method_cache)
g_hash_table_destroy (image->method_cache);
if (image->methodref_cache)
g_hash_table_destroy (image->methodref_cache);
mono_internal_hash_table_destroy (&image->class_cache);
mono_conc_hashtable_destroy (image->field_cache);
if (image->array_cache) {
g_hash_table_foreach (image->array_cache, free_array_cache_entry, NULL);
g_hash_table_destroy (image->array_cache);
}
if (image->szarray_cache)
g_hash_table_destroy (image->szarray_cache);
if (image->ptr_cache)
g_hash_table_destroy (image->ptr_cache);
if (image->name_cache) {
g_hash_table_foreach (image->name_cache, free_hash_table, NULL);
g_hash_table_destroy (image->name_cache);
}
free_hash (image->native_wrapper_cache);
free_hash (image->native_func_wrapper_cache);
free_hash (image->managed_wrapper_cache);
free_hash (image->delegate_begin_invoke_cache);
free_hash (image->delegate_end_invoke_cache);
free_hash (image->delegate_invoke_cache);
free_hash (image->delegate_abstract_invoke_cache);
free_hash (image->delegate_bound_static_invoke_cache);
free_hash (image->delegate_invoke_generic_cache);
free_hash (image->delegate_begin_invoke_generic_cache);
free_hash (image->delegate_end_invoke_generic_cache);
free_hash (image->synchronized_generic_cache);
free_hash (image->remoting_invoke_cache);
free_hash (image->runtime_invoke_cache);
free_hash (image->runtime_invoke_vtype_cache);
free_hash (image->runtime_invoke_direct_cache);
free_hash (image->runtime_invoke_vcall_cache);
free_hash (image->synchronized_cache);
free_hash (image->unbox_wrapper_cache);
free_hash (image->cominterop_invoke_cache);
free_hash (image->cominterop_wrapper_cache);
free_hash (image->typespec_cache);
free_hash (image->ldfld_wrapper_cache);
free_hash (image->ldflda_wrapper_cache);
free_hash (image->stfld_wrapper_cache);
free_hash (image->isinst_cache);
free_hash (image->castclass_cache);
free_hash (image->proxy_isinst_cache);
free_hash (image->thunk_invoke_cache);
free_hash (image->var_cache_slow);
free_hash (image->mvar_cache_slow);
free_hash (image->wrapper_param_names);
free_hash (image->native_wrapper_aot_cache);
free_hash (image->pinvoke_scopes);
free_hash (image->pinvoke_scope_filenames);
free_hash (image->gsharedvt_types);
/* The ownership of signatures is not well defined */
g_hash_table_destroy (image->memberref_signatures);
g_hash_table_destroy (image->helper_signatures);
g_hash_table_destroy (image->method_signatures);
if (image->rgctx_template_hash)
g_hash_table_destroy (image->rgctx_template_hash);
if (image->property_hash)
mono_property_hash_destroy (image->property_hash);
/*
reflection_info_unregister_classes is only required by dynamic images, which will not be properly
cleared during shutdown as we don't perform regular appdomain unload for the root one.
*/
g_assert (!image->reflection_info_unregister_classes || mono_runtime_is_shutting_down ());
image->reflection_info_unregister_classes = NULL;
if (image->interface_bitset) {
mono_unload_interface_ids (image->interface_bitset);
mono_bitset_free (image->interface_bitset);
}
if (image->image_info){
MonoCLIImageInfo *ii = image->image_info;
if (ii->cli_section_tables)
g_free (ii->cli_section_tables);
if (ii->cli_sections)
g_free (ii->cli_sections);
g_free (image->image_info);
}
for (i = 0; i < image->module_count; ++i) {
if (image->modules [i]) {
if (!mono_image_close_except_pools (image->modules [i]))
image->modules [i] = NULL;
}
}
if (image->modules_loaded)
g_free (image->modules_loaded);
mono_mutex_destroy (&image->szarray_cache_lock);
mono_mutex_destroy (&image->lock);
/*g_print ("destroy image %p (dynamic: %d)\n", image, image->dynamic);*/
if (image_is_dynamic (image)) {
/* Dynamic images are GC_MALLOCed */
g_free ((char*)image->module_name);
mono_dynamic_image_free ((MonoDynamicImage*)image);
}
mono_profiler_module_event (image, MONO_PROFILE_END_UNLOAD);
return TRUE;
}
void
mono_image_close_finish (MonoImage *image)
{
int i;
if (image->references && !image_is_dynamic (image)) {
for (i = 0; i < image->nreferences; i++) {
if (image->references [i] && image->references [i] != REFERENCE_MISSING)
mono_assembly_close_finish (image->references [i]);
}
g_free (image->references);
image->references = NULL;
}
for (i = 0; i < image->module_count; ++i) {
if (image->modules [i])
mono_image_close_finish (image->modules [i]);
}
if (image->modules)
g_free (image->modules);
#ifndef DISABLE_PERFCOUNTERS
mono_perfcounters->loader_bytes -= mono_mempool_get_allocated (image->mempool);
#endif
if (!image_is_dynamic (image)) {
if (debug_assembly_unload)
mono_mempool_invalidate (image->mempool);
else {
mono_mempool_destroy (image->mempool);
g_free (image);
}
} else {
if (debug_assembly_unload)
mono_mempool_invalidate (image->mempool);
else {
mono_mempool_destroy (image->mempool);
mono_dynamic_image_free_image ((MonoDynamicImage*)image);
}
}
}
/**
* mono_image_close:
* @image: The image file we wish to close
*
* Closes an image file, deallocates all memory consumed and
* unmaps all possible sections of the file
*/
void
mono_image_close (MonoImage *image)
{
if (mono_image_close_except_pools (image))
mono_image_close_finish (image);
}
/**
* mono_image_strerror:
* @status: an code indicating the result from a recent operation
*
* Returns: a string describing the error
*/
const char *
mono_image_strerror (MonoImageOpenStatus status)
{
switch (status){
case MONO_IMAGE_OK:
return "success";
case MONO_IMAGE_ERROR_ERRNO:
return strerror (errno);
case MONO_IMAGE_IMAGE_INVALID:
return "File does not contain a valid CIL image";
case MONO_IMAGE_MISSING_ASSEMBLYREF:
return "An assembly was referenced, but could not be found";
}
return "Internal error";
}
static gpointer
mono_image_walk_resource_tree (MonoCLIImageInfo *info, guint32 res_id,
guint32 lang_id, gunichar2 *name,
MonoPEResourceDirEntry *entry,
MonoPEResourceDir *root, guint32 level)
{
gboolean is_string, is_dir;
guint32 name_offset, dir_offset;
/* Level 0 holds a directory entry for each type of resource
* (identified by ID or name).
*
* Level 1 holds a directory entry for each named resource
* item, and each "anonymous" item of a particular type of
* resource.
*
* Level 2 holds a directory entry for each language pointing to
* the actual data.
*/
is_string = MONO_PE_RES_DIR_ENTRY_NAME_IS_STRING (*entry);
name_offset = MONO_PE_RES_DIR_ENTRY_NAME_OFFSET (*entry);
is_dir = MONO_PE_RES_DIR_ENTRY_IS_DIR (*entry);
dir_offset = MONO_PE_RES_DIR_ENTRY_DIR_OFFSET (*entry);
if(level==0) {
if (is_string)
return NULL;
} else if (level==1) {
if (res_id != name_offset)
return NULL;
#if 0
if(name!=NULL &&
is_string==TRUE && name!=lookup (name_offset)) {
return(NULL);
}
#endif
} else if (level==2) {
if (is_string == TRUE || (is_string == FALSE && lang_id != 0 && name_offset != lang_id))
return NULL;
} else {
g_assert_not_reached ();
}
if(is_dir==TRUE) {
MonoPEResourceDir *res_dir=(MonoPEResourceDir *)(((char *)root)+dir_offset);
MonoPEResourceDirEntry *sub_entries=(MonoPEResourceDirEntry *)(res_dir+1);
guint32 entries, i;
entries = GUINT16_FROM_LE (res_dir->res_named_entries) + GUINT16_FROM_LE (res_dir->res_id_entries);
for(i=0; i<entries; i++) {
MonoPEResourceDirEntry *sub_entry=&sub_entries[i];
gpointer ret;
ret=mono_image_walk_resource_tree (info, res_id,
lang_id, name,
sub_entry, root,
level+1);
if(ret!=NULL) {
return(ret);
}
}
return(NULL);
} else {
MonoPEResourceDataEntry *data_entry=(MonoPEResourceDataEntry *)((char *)(root)+dir_offset);
MonoPEResourceDataEntry *res;
res = g_new0 (MonoPEResourceDataEntry, 1);
res->rde_data_offset = GUINT32_TO_LE (data_entry->rde_data_offset);
res->rde_size = GUINT32_TO_LE (data_entry->rde_size);
res->rde_codepage = GUINT32_TO_LE (data_entry->rde_codepage);
res->rde_reserved = GUINT32_TO_LE (data_entry->rde_reserved);
return (res);
}
}
/**
* mono_image_lookup_resource:
* @image: the image to look up the resource in
* @res_id: A MONO_PE_RESOURCE_ID_ that represents the resource ID to lookup.
* @lang_id: The language id.
* @name: the resource name to lookup.
*
* Returns: NULL if not found, otherwise a pointer to the in-memory representation
* of the given resource. The caller should free it using g_free () when no longer
* needed.
*/
gpointer
mono_image_lookup_resource (MonoImage *image, guint32 res_id, guint32 lang_id, gunichar2 *name)
{
MonoCLIImageInfo *info;
MonoDotNetHeader *header;
MonoPEDatadir *datadir;
MonoPEDirEntry *rsrc;
MonoPEResourceDir *resource_dir;
MonoPEResourceDirEntry *res_entries;
guint32 entries, i;
if(image==NULL) {
return(NULL);
}
mono_image_ensure_section_idx (image, MONO_SECTION_RSRC);
info=image->image_info;
if(info==NULL) {
return(NULL);
}
header=&info->cli_header;
if(header==NULL) {
return(NULL);
}
datadir=&header->datadir;
if(datadir==NULL) {
return(NULL);
}
rsrc=&datadir->pe_resource_table;
if(rsrc==NULL) {
return(NULL);
}
resource_dir=(MonoPEResourceDir *)mono_image_rva_map (image, rsrc->rva);
if(resource_dir==NULL) {
return(NULL);
}
entries = GUINT16_FROM_LE (resource_dir->res_named_entries) + GUINT16_FROM_LE (resource_dir->res_id_entries);
res_entries=(MonoPEResourceDirEntry *)(resource_dir+1);
for(i=0; i<entries; i++) {
MonoPEResourceDirEntry *entry=&res_entries[i];
gpointer ret;
ret=mono_image_walk_resource_tree (info, res_id, lang_id,
name, entry, resource_dir,
0);
if(ret!=NULL) {
return(ret);
}
}
return(NULL);
}
/**
* mono_image_get_entry_point:
* @image: the image where the entry point will be looked up.
*
* Use this routine to determine the metadata token for method that
* has been flagged as the entry point.
*
* Returns: the token for the entry point method in the image
*/
guint32
mono_image_get_entry_point (MonoImage *image)
{
return ((MonoCLIImageInfo*)image->image_info)->cli_cli_header.ch_entry_point;
}
/**
* mono_image_get_resource:
* @image: the image where the resource will be looked up.
* @offset: The offset to add to the resource
* @size: a pointer to an int where the size of the resource will be stored
*
* This is a low-level routine that fetches a resource from the
* metadata that starts at a given @offset. The @size parameter is
* filled with the data field as encoded in the metadata.
*
* Returns: the pointer to the resource whose offset is @offset.
*/
const char*
mono_image_get_resource (MonoImage *image, guint32 offset, guint32 *size)
{
MonoCLIImageInfo *iinfo = image->image_info;
MonoCLIHeader *ch = &iinfo->cli_cli_header;
const char* data;
if (!ch->ch_resources.rva || offset + 4 > ch->ch_resources.size)
return NULL;
data = mono_image_rva_map (image, ch->ch_resources.rva);
if (!data)
return NULL;
data += offset;
if (size)
*size = read32 (data);
data += 4;
return data;
}
MonoImage*
mono_image_load_file_for_image (MonoImage *image, int fileidx)
{
char *base_dir, *name;
MonoImage *res;
MonoTableInfo *t = &image->tables [MONO_TABLE_FILE];
const char *fname;
guint32 fname_id;
if (fileidx < 1 || fileidx > t->rows)
return NULL;
mono_image_lock (image);
if (image->files && image->files [fileidx - 1]) {
mono_image_unlock (image);
return image->files [fileidx - 1];
}
fname_id = mono_metadata_decode_row_col (t, fileidx - 1, MONO_FILE_NAME);
fname = mono_metadata_string_heap (image, fname_id);
base_dir = g_path_get_dirname (image->name);
name = g_build_filename (base_dir, fname, NULL);
res = mono_image_open (name, NULL);
if (!res)
goto done;
mono_image_lock (image);
if (image->files && image->files [fileidx - 1]) {
MonoImage *old = res;
res = image->files [fileidx - 1];
mono_loader_unlock ();
mono_image_close (old);
} else {
int i;
/* g_print ("loaded file %s from %s (%p)\n", name, image->name, image->assembly); */
res->assembly = image->assembly;
for (i = 0; i < res->module_count; ++i) {
if (res->modules [i] && !res->modules [i]->assembly)
res->modules [i]->assembly = image->assembly;
}
if (!image->files)
image->files = g_new0 (MonoImage*, t->rows);
image->files [fileidx - 1] = res;
mono_loader_unlock ();
/* vtable fixup can't happen with the image lock held */
#ifdef HOST_WIN32
if (res->is_module_handle)
mono_image_fixup_vtable (res);
#endif
}
done:
g_free (name);
g_free (base_dir);
return res;
}
/**
* mono_image_get_strong_name:
* @image: a MonoImage
* @size: a guint32 pointer, or NULL.
*
* If the image has a strong name, and @size is not NULL, the value
* pointed to by size will have the size of the strong name.
*
* Returns: NULL if the image does not have a strong name, or a
* pointer to the public key.
*/
const char*
mono_image_get_strong_name (MonoImage *image, guint32 *size)
{
MonoCLIImageInfo *iinfo = image->image_info;
MonoPEDirEntry *de = &iinfo->cli_cli_header.ch_strong_name;
const char* data;
if (!de->size || !de->rva)
return NULL;
data = mono_image_rva_map (image, de->rva);
if (!data)
return NULL;
if (size)
*size = de->size;
return data;
}
/**
* mono_image_strong_name_position:
* @image: a MonoImage
* @size: a guint32 pointer, or NULL.
*
* If the image has a strong name, and @size is not NULL, the value
* pointed to by size will have the size of the strong name.
*
* Returns: the position within the image file where the strong name
* is stored.
*/
guint32
mono_image_strong_name_position (MonoImage *image, guint32 *size)
{
MonoCLIImageInfo *iinfo = image->image_info;
MonoPEDirEntry *de = &iinfo->cli_cli_header.ch_strong_name;
guint32 pos;
if (size)
*size = de->size;
if (!de->size || !de->rva)
return 0;
pos = mono_cli_rva_image_map (image, de->rva);
return pos == INVALID_ADDRESS ? 0 : pos;
}
/**
* mono_image_get_public_key:
* @image: a MonoImage
* @size: a guint32 pointer, or NULL.
*
* This is used to obtain the public key in the @image.
*
* If the image has a public key, and @size is not NULL, the value
* pointed to by size will have the size of the public key.
*
* Returns: NULL if the image does not have a public key, or a pointer
* to the public key.
*/
const char*
mono_image_get_public_key (MonoImage *image, guint32 *size)
{
const char *pubkey;
guint32 len, tok;
if (image_is_dynamic (image)) {
if (size)
*size = ((MonoDynamicImage*)image)->public_key_len;
return (char*)((MonoDynamicImage*)image)->public_key;
}
if (image->tables [MONO_TABLE_ASSEMBLY].rows != 1)
return NULL;
tok = mono_metadata_decode_row_col (&image->tables [MONO_TABLE_ASSEMBLY], 0, MONO_ASSEMBLY_PUBLIC_KEY);
if (!tok)
return NULL;
pubkey = mono_metadata_blob_heap (image, tok);
len = mono_metadata_decode_blob_size (pubkey, &pubkey);
if (size)
*size = len;
return pubkey;
}
/**
* mono_image_get_name:
* @name: a MonoImage
*
* Returns: the name of the assembly.
*/
const char*
mono_image_get_name (MonoImage *image)
{
return image->assembly_name;
}
/**
* mono_image_get_filename:
* @image: a MonoImage
*
* Used to get the filename that hold the actual MonoImage
*
* Returns: the filename.
*/
const char*
mono_image_get_filename (MonoImage *image)
{
return image->name;
}
const char*
mono_image_get_guid (MonoImage *image)
{
return image->guid;
}
const MonoTableInfo*
mono_image_get_table_info (MonoImage *image, int table_id)
{
if (table_id < 0 || table_id >= MONO_TABLE_NUM)
return NULL;
return &image->tables [table_id];
}
int
mono_image_get_table_rows (MonoImage *image, int table_id)
{
if (table_id < 0 || table_id >= MONO_TABLE_NUM)
return 0;
return image->tables [table_id].rows;
}
int
mono_table_info_get_rows (const MonoTableInfo *table)
{
return table->rows;
}
/**
* mono_image_get_assembly:
* @image: the MonoImage.
*
* Use this routine to get the assembly that owns this image.
*
* Returns: the assembly that holds this image.
*/
MonoAssembly*
mono_image_get_assembly (MonoImage *image)
{
return image->assembly;
}
/**
* mono_image_is_dynamic:
* @image: the MonoImage
*
* Determines if the given image was created dynamically through the
* System.Reflection.Emit API
*
* Returns: TRUE if the image was created dynamically, FALSE if not.
*/
gboolean
mono_image_is_dynamic (MonoImage *image)
{
return image_is_dynamic (image);
}
/**
* mono_image_has_authenticode_entry:
* @image: the MonoImage
*
* Use this routine to determine if the image has a Authenticode
* Certificate Table.
*
* Returns: TRUE if the image contains an authenticode entry in the PE
* directory.
*/
gboolean
mono_image_has_authenticode_entry (MonoImage *image)
{
MonoCLIImageInfo *iinfo = image->image_info;
MonoDotNetHeader *header = &iinfo->cli_header;
MonoPEDirEntry *de = &header->datadir.pe_certificate_table;
// the Authenticode "pre" (non ASN.1) header is 8 bytes long
return ((de->rva != 0) && (de->size > 8));
}
gpointer
mono_image_alloc (MonoImage *image, guint size)
{
gpointer res;
#ifndef DISABLE_PERFCOUNTERS
mono_perfcounters->loader_bytes += size;
#endif
mono_image_lock (image);
res = mono_mempool_alloc (image->mempool, size);
mono_image_unlock (image);
return res;
}
gpointer
mono_image_alloc0 (MonoImage *image, guint size)
{
gpointer res;
#ifndef DISABLE_PERFCOUNTERS
mono_perfcounters->loader_bytes += size;
#endif
mono_image_lock (image);
res = mono_mempool_alloc0 (image->mempool, size);
mono_image_unlock (image);
return res;
}
char*
mono_image_strdup (MonoImage *image, const char *s)
{
char *res;
#ifndef DISABLE_PERFCOUNTERS
mono_perfcounters->loader_bytes += strlen (s);
#endif
mono_image_lock (image);
res = mono_mempool_strdup (image->mempool, s);
mono_image_unlock (image);
return res;
}
GList*
g_list_prepend_image (MonoImage *image, GList *list, gpointer data)
{
GList *new_list;
new_list = mono_image_alloc (image, sizeof (GList));
new_list->data = data;
new_list->prev = list ? list->prev : NULL;
new_list->next = list;
if (new_list->prev)
new_list->prev->next = new_list;
if (list)
list->prev = new_list;
return new_list;
}
GSList*
g_slist_append_image (MonoImage *image, GSList *list, gpointer data)
{
GSList *new_list;
new_list = mono_image_alloc (image, sizeof (GSList));
new_list->data = data;
new_list->next = NULL;
return g_slist_concat (list, new_list);
}
void
mono_image_lock (MonoImage *image)
{
mono_locks_acquire (&image->lock, ImageDataLock);
}
void
mono_image_unlock (MonoImage *image)
{
mono_locks_release (&image->lock, ImageDataLock);
}
/**
* mono_image_property_lookup:
*
* Lookup a property on @image. Used to store very rare fields of MonoClass and MonoMethod.
*
* LOCKING: Takes the image lock
*/
gpointer
mono_image_property_lookup (MonoImage *image, gpointer subject, guint32 property)
{
gpointer res;
mono_image_lock (image);
res = mono_property_hash_lookup (image->property_hash, subject, property);
mono_image_unlock (image);
return res;
}
/**
* mono_image_property_insert:
*
* Insert a new property @property with value @value on @subject in @image. Used to store very rare fields of MonoClass and MonoMethod.
*
* LOCKING: Takes the image lock
*/
void
mono_image_property_insert (MonoImage *image, gpointer subject, guint32 property, gpointer value)
{
mono_image_lock (image);
mono_property_hash_insert (image->property_hash, subject, property, value);
mono_image_unlock (image);
}
/**
* mono_image_property_remove:
*
* Remove all properties associated with @subject in @image. Used to store very rare fields of MonoClass and MonoMethod.
*
* LOCKING: Takes the image lock
*/
void
mono_image_property_remove (MonoImage *image, gpointer subject)
{
mono_image_lock (image);
mono_property_hash_remove_object (image->property_hash, subject);
mono_image_unlock (image);
}
void
mono_image_append_class_to_reflection_info_set (MonoClass *class)
{
MonoImage *image = class->image;
g_assert (image_is_dynamic (image));
mono_image_lock (image);
image->reflection_info_unregister_classes = g_slist_prepend_mempool (image->mempool, image->reflection_info_unregister_classes, class);
mono_image_unlock (image);
}
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