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2009-11-24 Sebastien Pouliot <sebastien@ximian.com>
[mono-project.git] / mono / metadata / image.c
blob392dc9cd67fc56d2aacabadc20fb0f133d251cc4
1 /*
2 * image.c: Routines for manipulating an image stored in an
3 * extended PE/COFF file.
4 *
5 * Authors:
6 * Miguel de Icaza (miguel@ximian.com)
7 * Paolo Molaro (lupus@ximian.com)
8 *
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 *
12 */
13 #include <config.h>
14 #include <stdio.h>
15 #include <glib.h>
16 #include <errno.h>
17 #include <time.h>
18 #include <string.h>
19 #include "image.h"
20 #include "cil-coff.h"
21 #include "mono-endian.h"
22 #include "tabledefs.h"
23 #include "tokentype.h"
24 #include "metadata-internals.h"
25 #include "profiler-private.h"
26 #include "loader.h"
27 #include "marshal.h"
28 #include "coree.h"
29 #include <mono/io-layer/io-layer.h>
30 #include <mono/utils/mono-logger.h>
31 #include <mono/utils/mono-path.h>
32 #include <mono/utils/mono-mmap.h>
33 #include <mono/utils/mono-io-portability.h>
34 #include <mono/metadata/class-internals.h>
35 #include <mono/metadata/assembly.h>
36 #include <mono/metadata/object-internals.h>
37 #include <mono/metadata/security-core-clr.h>
38 #include <mono/metadata/verify-internals.h>
39 #include <sys/types.h>
40 #include <sys/stat.h>
41 #ifdef HAVE_UNISTD_H
42 #include <unistd.h>
43 #endif
44
45 #define INVALID_ADDRESS 0xffffffff
46
47 /*
48 * Keeps track of the various assemblies loaded
49 */
50 static GHashTable *loaded_images_hash;
51 static GHashTable *loaded_images_refonly_hash;
52
53 static gboolean debug_assembly_unload = FALSE;
54
55 #define mono_images_lock() if (mutex_inited) EnterCriticalSection (&images_mutex)
56 #define mono_images_unlock() if (mutex_inited) LeaveCriticalSection (&images_mutex)
57 static gboolean mutex_inited;
58 static CRITICAL_SECTION images_mutex;
59
60 /* returns offset relative to image->raw_data */
61 guint32
62 mono_cli_rva_image_map (MonoImage *image, guint32 addr)
63 {
64 MonoCLIImageInfo *iinfo = image->image_info;
65 const int top = iinfo->cli_section_count;
66 MonoSectionTable *tables = iinfo->cli_section_tables;
67 int i;
68
69 for (i = 0; i < top; i++){
70 if ((addr >= tables->st_virtual_address) &&
71 (addr < tables->st_virtual_address + tables->st_raw_data_size)){
72 #ifdef HOST_WIN32
73 if (image->is_module_handle)
74 return addr;
75 #endif
76 return addr - tables->st_virtual_address + tables->st_raw_data_ptr;
77 }
78 tables++;
79 }
80 return INVALID_ADDRESS;
81 }
82
83 /**
84 * mono_images_rva_map:
85 * @image: a MonoImage
86 * @addr: relative virtual address (RVA)
87 *
88 * This is a low-level routine used by the runtime to map relative
89 * virtual address (RVA) into their location in memory.
90 *
91 * Returns: the address in memory for the given RVA, or NULL if the
92 * RVA is not valid for this image.
93 */
94 char *
95 mono_image_rva_map (MonoImage *image, guint32 addr)
96 {
97 MonoCLIImageInfo *iinfo = image->image_info;
98 const int top = iinfo->cli_section_count;
99 MonoSectionTable *tables = iinfo->cli_section_tables;
100 int i;
101
102 for (i = 0; i < top; i++){
103 if ((addr >= tables->st_virtual_address) &&
104 (addr < tables->st_virtual_address + tables->st_raw_data_size)){
105 if (!iinfo->cli_sections [i]) {
106 if (!mono_image_ensure_section_idx (image, i))
107 return NULL;
108 }
109 #ifdef HOST_WIN32
110 if (image->is_module_handle)
111 return image->raw_data + addr;
112 #endif
113 return (char*)iinfo->cli_sections [i] +
114 (addr - tables->st_virtual_address);
115 }
116 tables++;
117 }
118 return NULL;
119 }
120
121 /**
122 * mono_images_init:
123 *
124 * Initialize the global variables used by this module.
125 */
126 void
127 mono_images_init (void)
128 {
129 InitializeCriticalSection (&images_mutex);
130
131 loaded_images_hash = g_hash_table_new (g_str_hash, g_str_equal);
132 loaded_images_refonly_hash = g_hash_table_new (g_str_hash, g_str_equal);
133
134 debug_assembly_unload = g_getenv ("MONO_DEBUG_ASSEMBLY_UNLOAD") != NULL;
135
136 mutex_inited = TRUE;
137 }
138
139 /**
140 * mono_images_cleanup:
141 *
142 * Free all resources used by this module.
143 */
144 void
145 mono_images_cleanup (void)
146 {
147 DeleteCriticalSection (&images_mutex);
148
149 g_hash_table_destroy (loaded_images_hash);
150 g_hash_table_destroy (loaded_images_refonly_hash);
151
152 mutex_inited = FALSE;
153 }
154
155 /**
156 * mono_image_ensure_section_idx:
157 * @image: The image we are operating on
158 * @section: section number that we will load/map into memory
159 *
160 * This routine makes sure that we have an in-memory copy of
161 * an image section (.text, .rsrc, .data).
162 *
163 * Returns: TRUE on success
164 */
165 int
166 mono_image_ensure_section_idx (MonoImage *image, int section)
167 {
168 MonoCLIImageInfo *iinfo = image->image_info;
169 MonoSectionTable *sect;
170 gboolean writable;
171
172 g_return_val_if_fail (section < iinfo->cli_section_count, FALSE);
173
174 if (iinfo->cli_sections [section] != NULL)
175 return TRUE;
176
177 sect = &iinfo->cli_section_tables [section];
178
179 writable = sect->st_flags & SECT_FLAGS_MEM_WRITE;
180
181 if (sect->st_raw_data_ptr + sect->st_raw_data_size > image->raw_data_len)
182 return FALSE;
183 #ifdef HOST_WIN32
184 if (image->is_module_handle)
185 iinfo->cli_sections [section] = image->raw_data + sect->st_virtual_address;
186 else
187 #endif
188 /* FIXME: we ignore the writable flag since we don't patch the binary */
189 iinfo->cli_sections [section] = image->raw_data + sect->st_raw_data_ptr;
190 return TRUE;
191 }
192
193 /**
194 * mono_image_ensure_section:
195 * @image: The image we are operating on
196 * @section: section name that we will load/map into memory
197 *
198 * This routine makes sure that we have an in-memory copy of
199 * an image section (.text, .rsrc, .data).
200 *
201 * Returns: TRUE on success
202 */
203 int
204 mono_image_ensure_section (MonoImage *image, const char *section)
205 {
206 MonoCLIImageInfo *ii = image->image_info;
207 int i;
208
209 for (i = 0; i < ii->cli_section_count; i++){
210 if (strncmp (ii->cli_section_tables [i].st_name, section, 8) != 0)
211 continue;
212
213 return mono_image_ensure_section_idx (image, i);
214 }
215 return FALSE;
216 }
217
218 static int
219 load_section_tables (MonoImage *image, MonoCLIImageInfo *iinfo, guint32 offset)
220 {
221 const int top = iinfo->cli_header.coff.coff_sections;
222 int i;
223
224 iinfo->cli_section_count = top;
225 iinfo->cli_section_tables = g_new0 (MonoSectionTable, top);
226 iinfo->cli_sections = g_new0 (void *, top);
227
228 for (i = 0; i < top; i++){
229 MonoSectionTable *t = &iinfo->cli_section_tables [i];
230
231 if (offset + sizeof (MonoSectionTable) > image->raw_data_len)
232 return FALSE;
233 memcpy (t, image->raw_data + offset, sizeof (MonoSectionTable));
234 offset += sizeof (MonoSectionTable);
235
236 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
237 t->st_virtual_size = GUINT32_FROM_LE (t->st_virtual_size);
238 t->st_virtual_address = GUINT32_FROM_LE (t->st_virtual_address);
239 t->st_raw_data_size = GUINT32_FROM_LE (t->st_raw_data_size);
240 t->st_raw_data_ptr = GUINT32_FROM_LE (t->st_raw_data_ptr);
241 t->st_reloc_ptr = GUINT32_FROM_LE (t->st_reloc_ptr);
242 t->st_lineno_ptr = GUINT32_FROM_LE (t->st_lineno_ptr);
243 t->st_reloc_count = GUINT16_FROM_LE (t->st_reloc_count);
244 t->st_line_count = GUINT16_FROM_LE (t->st_line_count);
245 t->st_flags = GUINT32_FROM_LE (t->st_flags);
246 #endif
247 /* consistency checks here */
248 }
249
250 return TRUE;
251 }
252
253 static gboolean
254 load_cli_header (MonoImage *image, MonoCLIImageInfo *iinfo)
255 {
256 guint32 offset;
257
258 offset = mono_cli_rva_image_map (image, iinfo->cli_header.datadir.pe_cli_header.rva);
259 if (offset == INVALID_ADDRESS)
260 return FALSE;
261
262 if (offset + sizeof (MonoCLIHeader) > image->raw_data_len)
263 return FALSE;
264 memcpy (&iinfo->cli_cli_header, image->raw_data + offset, sizeof (MonoCLIHeader));
265
266 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
267 #define SWAP32(x) (x) = GUINT32_FROM_LE ((x))
268 #define SWAP16(x) (x) = GUINT16_FROM_LE ((x))
269 #define SWAPPDE(x) do { (x).rva = GUINT32_FROM_LE ((x).rva); (x).size = GUINT32_FROM_LE ((x).size);} while (0)
270 SWAP32 (iinfo->cli_cli_header.ch_size);
271 SWAP32 (iinfo->cli_cli_header.ch_flags);
272 SWAP32 (iinfo->cli_cli_header.ch_entry_point);
273 SWAP16 (iinfo->cli_cli_header.ch_runtime_major);
274 SWAP16 (iinfo->cli_cli_header.ch_runtime_minor);
275 SWAPPDE (iinfo->cli_cli_header.ch_metadata);
276 SWAPPDE (iinfo->cli_cli_header.ch_resources);
277 SWAPPDE (iinfo->cli_cli_header.ch_strong_name);
278 SWAPPDE (iinfo->cli_cli_header.ch_code_manager_table);
279 SWAPPDE (iinfo->cli_cli_header.ch_vtable_fixups);
280 SWAPPDE (iinfo->cli_cli_header.ch_export_address_table_jumps);
281 SWAPPDE (iinfo->cli_cli_header.ch_eeinfo_table);
282 SWAPPDE (iinfo->cli_cli_header.ch_helper_table);
283 SWAPPDE (iinfo->cli_cli_header.ch_dynamic_info);
284 SWAPPDE (iinfo->cli_cli_header.ch_delay_load_info);
285 SWAPPDE (iinfo->cli_cli_header.ch_module_image);
286 SWAPPDE (iinfo->cli_cli_header.ch_external_fixups);
287 SWAPPDE (iinfo->cli_cli_header.ch_ridmap);
288 SWAPPDE (iinfo->cli_cli_header.ch_debug_map);
289 SWAPPDE (iinfo->cli_cli_header.ch_ip_map);
290 #undef SWAP32
291 #undef SWAP16
292 #undef SWAPPDE
293 #endif
294 /* Catch new uses of the fields that are supposed to be zero */
295
296 if ((iinfo->cli_cli_header.ch_eeinfo_table.rva != 0) ||
297 (iinfo->cli_cli_header.ch_helper_table.rva != 0) ||
298 (iinfo->cli_cli_header.ch_dynamic_info.rva != 0) ||
299 (iinfo->cli_cli_header.ch_delay_load_info.rva != 0) ||
300 (iinfo->cli_cli_header.ch_module_image.rva != 0) ||
301 (iinfo->cli_cli_header.ch_external_fixups.rva != 0) ||
302 (iinfo->cli_cli_header.ch_ridmap.rva != 0) ||
303 (iinfo->cli_cli_header.ch_debug_map.rva != 0) ||
304 (iinfo->cli_cli_header.ch_ip_map.rva != 0)){
305
306 /*
307 * No need to scare people who are testing this, I am just
308 * labelling this as a LAMESPEC
309 */
310 /* g_warning ("Some fields in the CLI header which should have been zero are not zero"); */
311
312 }
313
314 return TRUE;
315 }
316
317 static gboolean
318 load_metadata_ptrs (MonoImage *image, MonoCLIImageInfo *iinfo)
319 {
320 guint32 offset, size;
321 guint16 streams;
322 int i;
323 guint32 pad;
324 char *ptr;
325
326 offset = mono_cli_rva_image_map (image, iinfo->cli_cli_header.ch_metadata.rva);
327 if (offset == INVALID_ADDRESS)
328 return FALSE;
329
330 size = iinfo->cli_cli_header.ch_metadata.size;
331
332 if (offset + size > image->raw_data_len)
333 return FALSE;
334 image->raw_metadata = image->raw_data + offset;
335
336 /* 24.2.1: Metadata root starts here */
337 ptr = image->raw_metadata;
338
339 if (strncmp (ptr, "BSJB", 4) == 0){
340 guint32 version_string_len;
341
342 ptr += 4;
343 image->md_version_major = read16 (ptr);
344 ptr += 2;
345 image->md_version_minor = read16 (ptr);
346 ptr += 6;
347
348 version_string_len = read32 (ptr);
349 ptr += 4;
350 image->version = g_strndup (ptr, version_string_len);
351 ptr += version_string_len;
352 pad = ptr - image->raw_metadata;
353 if (pad % 4)
354 ptr += 4 - (pad % 4);
355 } else
356 return FALSE;
357
358 /* skip over flags */
359 ptr += 2;
360
361 streams = read16 (ptr);
362 ptr += 2;
363
364 for (i = 0; i < streams; i++){
365 if (strncmp (ptr + 8, "#~", 3) == 0){
366 image->heap_tables.data = image->raw_metadata + read32 (ptr);
367 image->heap_tables.size = read32 (ptr + 4);
368 ptr += 8 + 3;
369 } else if (strncmp (ptr + 8, "#Strings", 9) == 0){
370 image->heap_strings.data = image->raw_metadata + read32 (ptr);
371 image->heap_strings.size = read32 (ptr + 4);
372 ptr += 8 + 9;
373 } else if (strncmp (ptr + 8, "#US", 4) == 0){
374 image->heap_us.data = image->raw_metadata + read32 (ptr);
375 image->heap_us.size = read32 (ptr + 4);
376 ptr += 8 + 4;
377 } else if (strncmp (ptr + 8, "#Blob", 6) == 0){
378 image->heap_blob.data = image->raw_metadata + read32 (ptr);
379 image->heap_blob.size = read32 (ptr + 4);
380 ptr += 8 + 6;
381 } else if (strncmp (ptr + 8, "#GUID", 6) == 0){
382 image->heap_guid.data = image->raw_metadata + read32 (ptr);
383 image->heap_guid.size = read32 (ptr + 4);
384 ptr += 8 + 6;
385 } else if (strncmp (ptr + 8, "#-", 3) == 0) {
386 image->heap_tables.data = image->raw_metadata + read32 (ptr);
387 image->heap_tables.size = read32 (ptr + 4);
388 ptr += 8 + 3;
389 image->uncompressed_metadata = TRUE;
390 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);
391 } else {
392 g_message ("Unknown heap type: %s\n", ptr + 8);
393 ptr += 8 + strlen (ptr + 8) + 1;
394 }
395 pad = ptr - image->raw_metadata;
396 if (pad % 4)
397 ptr += 4 - (pad % 4);
398 }
399
400 g_assert (image->heap_guid.data);
401 g_assert (image->heap_guid.size >= 16);
402
403 image->guid = mono_guid_to_string ((guint8*)image->heap_guid.data);
404
405 return TRUE;
406 }
407
408 /*
409 * Load representation of logical metadata tables, from the "#~" stream
410 */
411 static gboolean
412 load_tables (MonoImage *image)
413 {
414 const char *heap_tables = image->heap_tables.data;
415 const guint32 *rows;
416 guint64 valid_mask, sorted_mask;
417 int valid = 0, table;
418 int heap_sizes;
419
420 heap_sizes = heap_tables [6];
421 image->idx_string_wide = ((heap_sizes & 0x01) == 1);
422 image->idx_guid_wide = ((heap_sizes & 0x02) == 2);
423 image->idx_blob_wide = ((heap_sizes & 0x04) == 4);
424
425 valid_mask = read64 (heap_tables + 8);
426 sorted_mask = read64 (heap_tables + 16);
427 rows = (const guint32 *) (heap_tables + 24);
428
429 for (table = 0; table < 64; table++){
430 if ((valid_mask & ((guint64) 1 << table)) == 0){
431 if (table > MONO_TABLE_LAST)
432 continue;
433 image->tables [table].rows = 0;
434 continue;
435 }
436 if (table > MONO_TABLE_LAST) {
437 g_warning("bits in valid must be zero above 0x2d (II - 23.1.6)");
438 } else {
439 image->tables [table].rows = read32 (rows);
440 }
441 /*if ((sorted_mask & ((guint64) 1 << table)) == 0){
442 g_print ("table %s (0x%02x) is sorted\n", mono_meta_table_name (table), table);
443 }*/
444 rows++;
445 valid++;
446 }
447
448 image->tables_base = (heap_tables + 24) + (4 * valid);
449
450 /* They must be the same */
451 g_assert ((const void *) image->tables_base == (const void *) rows);
452
453 mono_metadata_compute_table_bases (image);
454 return TRUE;
455 }
456
457 static gboolean
458 load_metadata (MonoImage *image, MonoCLIImageInfo *iinfo)
459 {
460 if (!load_metadata_ptrs (image, iinfo))
461 return FALSE;
462
463 return load_tables (image);
464 }
465
466 void
467 mono_image_check_for_module_cctor (MonoImage *image)
468 {
469 MonoTableInfo *t, *mt;
470 t = &image->tables [MONO_TABLE_TYPEDEF];
471 mt = &image->tables [MONO_TABLE_METHOD];
472 if (mono_framework_version () == 1) {
473 image->checked_module_cctor = TRUE;
474 return;
475 }
476 if (image->dynamic) {
477 /* FIXME: */
478 image->checked_module_cctor = TRUE;
479 return;
480 }
481 if (t->rows >= 1) {
482 guint32 nameidx = mono_metadata_decode_row_col (t, 0, MONO_TYPEDEF_NAME);
483 const char *name = mono_metadata_string_heap (image, nameidx);
484 if (strcmp (name, "<Module>") == 0) {
485 guint32 first_method = mono_metadata_decode_row_col (t, 0, MONO_TYPEDEF_METHOD_LIST) - 1;
486 guint32 last_method;
487 if (t->rows > 1)
488 last_method = mono_metadata_decode_row_col (t, 1, MONO_TYPEDEF_METHOD_LIST) - 1;
489 else
490 last_method = mt->rows;
491 for (; first_method < last_method; first_method++) {
492 nameidx = mono_metadata_decode_row_col (mt, first_method, MONO_METHOD_NAME);
493 name = mono_metadata_string_heap (image, nameidx);
494 if (strcmp (name, ".cctor") == 0) {
495 image->has_module_cctor = TRUE;
496 image->checked_module_cctor = TRUE;
497 return;
498 }
499 }
500 }
501 }
502 image->has_module_cctor = FALSE;
503 image->checked_module_cctor = TRUE;
504 }
505
506 static void
507 load_modules (MonoImage *image)
508 {
509 MonoTableInfo *t;
510
511 if (image->modules)
512 return;
513
514 t = &image->tables [MONO_TABLE_MODULEREF];
515 image->modules = g_new0 (MonoImage *, t->rows);
516 image->modules_loaded = g_new0 (gboolean, t->rows);
517 image->module_count = t->rows;
518 }
519
520 /**
521 * mono_image_load_module:
522 *
523 * Load the module with the one-based index IDX from IMAGE and return it. Return NULL if
524 * it cannot be loaded.
525 */
526 MonoImage*
527 mono_image_load_module (MonoImage *image, int idx)
528 {
529 MonoTableInfo *t;
530 MonoTableInfo *file_table;
531 int i;
532 char *base_dir;
533 gboolean refonly = image->ref_only;
534 GList *list_iter, *valid_modules = NULL;
535 MonoImageOpenStatus status;
536
537 if ((image->module_count == 0) || (idx > image->module_count))
538 return NULL;
539 if (image->modules_loaded [idx - 1])
540 return image->modules [idx - 1];
541
542 file_table = &image->tables [MONO_TABLE_FILE];
543 for (i = 0; i < file_table->rows; i++) {
544 guint32 cols [MONO_FILE_SIZE];
545 mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
546 if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
547 continue;
548 valid_modules = g_list_prepend (valid_modules, (char*)mono_metadata_string_heap (image, cols [MONO_FILE_NAME]));
549 }
550
551 t = &image->tables [MONO_TABLE_MODULEREF];
552 base_dir = g_path_get_dirname (image->name);
553
554 {
555 char *module_ref;
556 const char *name;
557 guint32 cols [MONO_MODULEREF_SIZE];
558 /* if there is no file table, we try to load the module... */
559 int valid = file_table->rows == 0;
560
561 mono_metadata_decode_row (t, idx - 1, cols, MONO_MODULEREF_SIZE);
562 name = mono_metadata_string_heap (image, cols [MONO_MODULEREF_NAME]);
563 for (list_iter = valid_modules; list_iter; list_iter = list_iter->next) {
564 /* be safe with string dups, but we could just compare string indexes */
565 if (strcmp (list_iter->data, name) == 0) {
566 valid = TRUE;
567 break;
568 }
569 }
570 if (valid) {
571 module_ref = g_build_filename (base_dir, name, NULL);
572 image->modules [idx - 1] = mono_image_open_full (module_ref, &status, refonly);
573 if (image->modules [idx - 1]) {
574 mono_image_addref (image->modules [idx - 1]);
575 image->modules [idx - 1]->assembly = image->assembly;
576 #ifdef HOST_WIN32
577 if (image->modules [idx - 1]->is_module_handle)
578 mono_image_fixup_vtable (image->modules [idx - 1]);
579 #endif
580 /* g_print ("loaded module %s from %s (%p)\n", module_ref, image->name, image->assembly); */
581 }
582 g_free (module_ref);
583 }
584 }
585
586 image->modules_loaded [idx - 1] = TRUE;
587
588 g_free (base_dir);
589 g_list_free (valid_modules);
590
591 return image->modules [idx - 1];
592 }
593
594 static gpointer
595 class_key_extract (gpointer value)
596 {
597 MonoClass *class = value;
598
599 return GUINT_TO_POINTER (class->type_token);
600 }
601
602 static gpointer*
603 class_next_value (gpointer value)
604 {
605 MonoClass *class = value;
606
607 return (gpointer*)&class->next_class_cache;
608 }
609
610 void
611 mono_image_init (MonoImage *image)
612 {
613 image->mempool = mono_mempool_new_size (512);
614 mono_internal_hash_table_init (&image->class_cache,
615 g_direct_hash,
616 class_key_extract,
617 class_next_value);
618 image->field_cache = g_hash_table_new (NULL, NULL);
619
620 image->typespec_cache = g_hash_table_new (NULL, NULL);
621 image->memberref_signatures = g_hash_table_new (NULL, NULL);
622 image->helper_signatures = g_hash_table_new (g_str_hash, g_str_equal);
623 image->method_signatures = g_hash_table_new (NULL, NULL);
624
625 image->property_hash = mono_property_hash_new ();
626 InitializeCriticalSection (&image->lock);
627 InitializeCriticalSection (&image->szarray_cache_lock);
628 }
629
630 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
631 #define SWAP64(x) (x) = GUINT64_FROM_LE ((x))
632 #define SWAP32(x) (x) = GUINT32_FROM_LE ((x))
633 #define SWAP16(x) (x) = GUINT16_FROM_LE ((x))
634 #define SWAPPDE(x) do { (x).rva = GUINT32_FROM_LE ((x).rva); (x).size = GUINT32_FROM_LE ((x).size);} while (0)
635 #else
636 #define SWAP64(x)
637 #define SWAP32(x)
638 #define SWAP16(x)
639 #define SWAPPDE(x)
640 #endif
641
642 /*
643 * Returns < 0 to indicate an error.
644 */
645 static int
646 do_load_header (MonoImage *image, MonoDotNetHeader *header, int offset)
647 {
648 MonoDotNetHeader64 header64;
649
650 #ifdef HOST_WIN32
651 if (!image->is_module_handle)
652 #endif
653 if (offset + sizeof (MonoDotNetHeader32) > image->raw_data_len)
654 return -1;
655
656 memcpy (header, image->raw_data + offset, sizeof (MonoDotNetHeader));
657
658 if (header->pesig [0] != 'P' || header->pesig [1] != 'E')
659 return -1;
660
661 /* endian swap the fields common between PE and PE+ */
662 SWAP32 (header->coff.coff_time);
663 SWAP32 (header->coff.coff_symptr);
664 SWAP32 (header->coff.coff_symcount);
665 SWAP16 (header->coff.coff_machine);
666 SWAP16 (header->coff.coff_sections);
667 SWAP16 (header->coff.coff_opt_header_size);
668 SWAP16 (header->coff.coff_attributes);
669 /* MonoPEHeader */
670 SWAP32 (header->pe.pe_code_size);
671 SWAP32 (header->pe.pe_uninit_data_size);
672 SWAP32 (header->pe.pe_rva_entry_point);
673 SWAP32 (header->pe.pe_rva_code_base);
674 SWAP32 (header->pe.pe_rva_data_base);
675 SWAP16 (header->pe.pe_magic);
676
677 /* now we are ready for the basic tests */
678
679 if (header->pe.pe_magic == 0x10B) {
680 offset += sizeof (MonoDotNetHeader);
681 SWAP32 (header->pe.pe_data_size);
682 if (header->coff.coff_opt_header_size != (sizeof (MonoDotNetHeader) - sizeof (MonoCOFFHeader) - 4))
683 return -1;
684
685 SWAP32 (header->nt.pe_image_base); /* must be 0x400000 */
686 SWAP32 (header->nt.pe_stack_reserve);
687 SWAP32 (header->nt.pe_stack_commit);
688 SWAP32 (header->nt.pe_heap_reserve);
689 SWAP32 (header->nt.pe_heap_commit);
690 } else if (header->pe.pe_magic == 0x20B) {
691 /* PE32+ file format */
692 if (header->coff.coff_opt_header_size != (sizeof (MonoDotNetHeader64) - sizeof (MonoCOFFHeader) - 4))
693 return -1;
694 memcpy (&header64, image->raw_data + offset, sizeof (MonoDotNetHeader64));
695 offset += sizeof (MonoDotNetHeader64);
696 /* copy the fields already swapped. the last field, pe_data_size, is missing */
697 memcpy (&header64, header, sizeof (MonoDotNetHeader) - 4);
698 /* FIXME: we lose bits here, but we don't use this stuff internally, so we don't care much.
699 * will be fixed when we change MonoDotNetHeader to not match the 32 bit variant
700 */
701 SWAP64 (header64.nt.pe_image_base);
702 header->nt.pe_image_base = header64.nt.pe_image_base;
703 SWAP64 (header64.nt.pe_stack_reserve);
704 header->nt.pe_stack_reserve = header64.nt.pe_stack_reserve;
705 SWAP64 (header64.nt.pe_stack_commit);
706 header->nt.pe_stack_commit = header64.nt.pe_stack_commit;
707 SWAP64 (header64.nt.pe_heap_reserve);
708 header->nt.pe_heap_reserve = header64.nt.pe_heap_reserve;
709 SWAP64 (header64.nt.pe_heap_commit);
710 header->nt.pe_heap_commit = header64.nt.pe_heap_commit;
711
712 header->nt.pe_section_align = header64.nt.pe_section_align;
713 header->nt.pe_file_alignment = header64.nt.pe_file_alignment;
714 header->nt.pe_os_major = header64.nt.pe_os_major;
715 header->nt.pe_os_minor = header64.nt.pe_os_minor;
716 header->nt.pe_user_major = header64.nt.pe_user_major;
717 header->nt.pe_user_minor = header64.nt.pe_user_minor;
718 header->nt.pe_subsys_major = header64.nt.pe_subsys_major;
719 header->nt.pe_subsys_minor = header64.nt.pe_subsys_minor;
720 header->nt.pe_reserved_1 = header64.nt.pe_reserved_1;
721 header->nt.pe_image_size = header64.nt.pe_image_size;
722 header->nt.pe_header_size = header64.nt.pe_header_size;
723 header->nt.pe_checksum = header64.nt.pe_checksum;
724 header->nt.pe_subsys_required = header64.nt.pe_subsys_required;
725 header->nt.pe_dll_flags = header64.nt.pe_dll_flags;
726 header->nt.pe_loader_flags = header64.nt.pe_loader_flags;
727 header->nt.pe_data_dir_count = header64.nt.pe_data_dir_count;
728
729 /* copy the datadir */
730 memcpy (&header->datadir, &header64.datadir, sizeof (MonoPEDatadir));
731 } else {
732 return -1;
733 }
734
735 /* MonoPEHeaderNT: not used yet */
736 SWAP32 (header->nt.pe_section_align); /* must be 8192 */
737 SWAP32 (header->nt.pe_file_alignment); /* must be 512 or 4096 */
738 SWAP16 (header->nt.pe_os_major); /* must be 4 */
739 SWAP16 (header->nt.pe_os_minor); /* must be 0 */
740 SWAP16 (header->nt.pe_user_major);
741 SWAP16 (header->nt.pe_user_minor);
742 SWAP16 (header->nt.pe_subsys_major);
743 SWAP16 (header->nt.pe_subsys_minor);
744 SWAP32 (header->nt.pe_reserved_1);
745 SWAP32 (header->nt.pe_image_size);
746 SWAP32 (header->nt.pe_header_size);
747 SWAP32 (header->nt.pe_checksum);
748 SWAP16 (header->nt.pe_subsys_required);
749 SWAP16 (header->nt.pe_dll_flags);
750 SWAP32 (header->nt.pe_loader_flags);
751 SWAP32 (header->nt.pe_data_dir_count);
752
753 /* MonoDotNetHeader: mostly unused */
754 SWAPPDE (header->datadir.pe_export_table);
755 SWAPPDE (header->datadir.pe_import_table);
756 SWAPPDE (header->datadir.pe_resource_table);
757 SWAPPDE (header->datadir.pe_exception_table);
758 SWAPPDE (header->datadir.pe_certificate_table);
759 SWAPPDE (header->datadir.pe_reloc_table);
760 SWAPPDE (header->datadir.pe_debug);
761 SWAPPDE (header->datadir.pe_copyright);
762 SWAPPDE (header->datadir.pe_global_ptr);
763 SWAPPDE (header->datadir.pe_tls_table);
764 SWAPPDE (header->datadir.pe_load_config_table);
765 SWAPPDE (header->datadir.pe_bound_import);
766 SWAPPDE (header->datadir.pe_iat);
767 SWAPPDE (header->datadir.pe_delay_import_desc);
768 SWAPPDE (header->datadir.pe_cli_header);
769 SWAPPDE (header->datadir.pe_reserved);
770
771 #ifdef HOST_WIN32
772 if (image->is_module_handle)
773 image->raw_data_len = header->nt.pe_image_size;
774 #endif
775
776 return offset;
777 }
778
779 gboolean
780 mono_image_load_pe_data (MonoImage *image)
781 {
782 MonoCLIImageInfo *iinfo;
783 MonoDotNetHeader *header;
784 MonoMSDOSHeader msdos;
785 gint32 offset = 0;
786
787 iinfo = image->image_info;
788 header = &iinfo->cli_header;
789
790 #ifdef HOST_WIN32
791 if (!image->is_module_handle)
792 #endif
793 if (offset + sizeof (msdos) > image->raw_data_len)
794 goto invalid_image;
795 memcpy (&msdos, image->raw_data + offset, sizeof (msdos));
796
797 if (!(msdos.msdos_sig [0] == 'M' && msdos.msdos_sig [1] == 'Z'))
798 goto invalid_image;
799
800 msdos.pe_offset = GUINT32_FROM_LE (msdos.pe_offset);
801
802 offset = msdos.pe_offset;
803
804 offset = do_load_header (image, header, offset);
805 if (offset < 0)
806 goto invalid_image;
807
808 /*
809 * this tests for a x86 machine type, but itanium, amd64 and others could be used, too.
810 * we skip this test.
811 if (header->coff.coff_machine != 0x14c)
812 goto invalid_image;
813 */
814
815 #if 0
816 /*
817 * The spec says that this field should contain 6.0, but Visual Studio includes a new compiler,
818 * which produces binaries with 7.0. From Sergey:
819 *
820 * The reason is that MSVC7 uses traditional compile/link
821 * sequence for CIL executables, and VS.NET (and Framework
822 * SDK) includes linker version 7, that puts 7.0 in this
823 * field. That's why it's currently not possible to load VC
824 * binaries with Mono. This field is pretty much meaningless
825 * anyway (what linker?).
826 */
827 if (header->pe.pe_major != 6 || header->pe.pe_minor != 0)
828 goto invalid_image;
829 #endif
830
831 /*
832 * FIXME: byte swap all addresses here for header.
833 */
834
835 if (!load_section_tables (image, iinfo, offset))
836 goto invalid_image;
837
838 return TRUE;
839
840 invalid_image:
841 return FALSE;
842 }
843
844 gboolean
845 mono_image_load_cli_data (MonoImage *image)
846 {
847 MonoCLIImageInfo *iinfo;
848 MonoDotNetHeader *header;
849
850 iinfo = image->image_info;
851 header = &iinfo->cli_header;
852
853 /* Load the CLI header */
854 if (!load_cli_header (image, iinfo))
855 return FALSE;
856
857 if (!load_metadata (image, iinfo))
858 return FALSE;
859
860 return TRUE;
861 }
862
863 void
864 mono_image_load_names (MonoImage *image)
865 {
866 /* modules don't have an assembly table row */
867 if (image->tables [MONO_TABLE_ASSEMBLY].rows) {
868 image->assembly_name = mono_metadata_string_heap (image,
869 mono_metadata_decode_row_col (&image->tables [MONO_TABLE_ASSEMBLY],
870 0, MONO_ASSEMBLY_NAME));
871 }
872
873 image->module_name = mono_metadata_string_heap (image,
874 mono_metadata_decode_row_col (&image->tables [MONO_TABLE_MODULE],
875 0, MONO_MODULE_NAME));
876 }
877
878 static MonoImage *
879 do_mono_image_load (MonoImage *image, MonoImageOpenStatus *status,
880 gboolean care_about_cli, gboolean care_about_pecoff)
881 {
882 MonoCLIImageInfo *iinfo;
883 MonoDotNetHeader *header;
884
885 mono_profiler_module_event (image, MONO_PROFILE_START_LOAD);
886
887 mono_image_init (image);
888
889 iinfo = image->image_info;
890 header = &iinfo->cli_header;
891
892 if (status)
893 *status = MONO_IMAGE_IMAGE_INVALID;
894
895 if (care_about_pecoff == FALSE)
896 goto done;
897
898 if (!mono_verifier_verify_pe_data (image, NULL))
899 goto invalid_image;
900
901 if (!mono_image_load_pe_data (image))
902 goto invalid_image;
903
904 if (care_about_cli == FALSE) {
905 goto done;
906 }
907
908 if (!mono_verifier_verify_cli_data (image, NULL))
909 goto invalid_image;
910
911 if (!mono_image_load_cli_data (image))
912 goto invalid_image;
913
914 if (!mono_verifier_verify_table_data (image, NULL))
915 goto invalid_image;
916
917 mono_image_load_names (image);
918
919 load_modules (image);
920
921 done:
922 mono_profiler_module_loaded (image, MONO_PROFILE_OK);
923 if (status)
924 *status = MONO_IMAGE_OK;
925
926 return image;
927
928 invalid_image:
929 mono_profiler_module_loaded (image, MONO_PROFILE_FAILED);
930 mono_image_close (image);
931 return NULL;
932 }
933
934 static MonoImage *
935 do_mono_image_open (const char *fname, MonoImageOpenStatus *status,
936 gboolean care_about_cli, gboolean care_about_pecoff, gboolean refonly)
937 {
938 MonoCLIImageInfo *iinfo;
939 MonoImage *image;
940 MonoFileMap *filed;
941
942 if ((filed = mono_file_map_open (fname)) == NULL){
943 if (IS_PORTABILITY_SET) {
944 gchar *ffname = mono_portability_find_file (fname, TRUE);
945 if (ffname) {
946 filed = mono_file_map_open (ffname);
947 g_free (ffname);
948 }
949 }
950
951 if (filed == NULL) {
952 if (status)
953 *status = MONO_IMAGE_ERROR_ERRNO;
954 return NULL;
955 }
956 }
957
958 image = g_new0 (MonoImage, 1);
959 image->raw_buffer_used = TRUE;
960 image->raw_data_len = mono_file_map_size (filed);
961 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);
962 if (!image->raw_data) {
963 mono_file_map_close (filed);
964 g_free (image);
965 if (status)
966 *status = MONO_IMAGE_IMAGE_INVALID;
967 return NULL;
968 }
969 iinfo = g_new0 (MonoCLIImageInfo, 1);
970 image->image_info = iinfo;
971 image->name = mono_path_resolve_symlinks (fname);
972 image->ref_only = refonly;
973 image->ref_count = 1;
974 /* if MONO_SECURITY_MODE_CORE_CLR is set then determine if this image is platform code */
975 image->core_clr_platform_code = mono_security_core_clr_determine_platform_image (image);
976
977 mono_file_map_close (filed);
978 return do_mono_image_load (image, status, care_about_cli, care_about_pecoff);
979 }
980
981 MonoImage *
982 mono_image_loaded_full (const char *name, gboolean refonly)
983 {
984 MonoImage *res;
985 GHashTable *loaded_images = refonly ? loaded_images_refonly_hash : loaded_images_hash;
986
987 mono_images_lock ();
988 res = g_hash_table_lookup (loaded_images, name);
989 mono_images_unlock ();
990 return res;
991 }
992
993 /**
994 * mono_image_loaded:
995 * @name: name of the image to load
996 *
997 * This routine ensures that the given image is loaded.
998 *
999 * Returns: the loaded MonoImage, or NULL on failure.
1000 */
1001 MonoImage *
1002 mono_image_loaded (const char *name)
1003 {
1004 return mono_image_loaded_full (name, FALSE);
1005 }
1006
1007 typedef struct {
1008 MonoImage *res;
1009 const char* guid;
1010 } GuidData;
1011
1012 static void
1013 find_by_guid (gpointer key, gpointer val, gpointer user_data)
1014 {
1015 GuidData *data = user_data;
1016 MonoImage *image;
1017
1018 if (data->res)
1019 return;
1020 image = val;
1021 if (strcmp (data->guid, mono_image_get_guid (image)) == 0)
1022 data->res = image;
1023 }
1024
1025 MonoImage *
1026 mono_image_loaded_by_guid_full (const char *guid, gboolean refonly)
1027 {
1028 GuidData data;
1029 GHashTable *loaded_images = refonly ? loaded_images_refonly_hash : loaded_images_hash;
1030 data.res = NULL;
1031 data.guid = guid;
1032
1033 mono_images_lock ();
1034 g_hash_table_foreach (loaded_images, find_by_guid, &data);
1035 mono_images_unlock ();
1036 return data.res;
1037 }
1038
1039 MonoImage *
1040 mono_image_loaded_by_guid (const char *guid)
1041 {
1042 return mono_image_loaded_by_guid_full (guid, FALSE);
1043 }
1044
1045 static MonoImage *
1046 register_image (MonoImage *image)
1047 {
1048 MonoImage *image2;
1049 GHashTable *loaded_images = image->ref_only ? loaded_images_refonly_hash : loaded_images_hash;
1050
1051 mono_images_lock ();
1052 image2 = g_hash_table_lookup (loaded_images, image->name);
1053
1054 if (image2) {
1055 /* Somebody else beat us to it */
1056 mono_image_addref (image2);
1057 mono_images_unlock ();
1058 mono_image_close (image);
1059 return image2;
1060 }
1061 g_hash_table_insert (loaded_images, image->name, image);
1062 if (image->assembly_name && (g_hash_table_lookup (loaded_images, image->assembly_name) == NULL))
1063 g_hash_table_insert (loaded_images, (char *) image->assembly_name, image);
1064 mono_images_unlock ();
1065
1066 return image;
1067 }
1068
1069 MonoImage *
1070 mono_image_open_from_data_full (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status, gboolean refonly)
1071 {
1072 MonoCLIImageInfo *iinfo;
1073 MonoImage *image;
1074 char *datac;
1075
1076 if (!data || !data_len) {
1077 if (status)
1078 *status = MONO_IMAGE_IMAGE_INVALID;
1079 return NULL;
1080 }
1081 datac = data;
1082 if (need_copy) {
1083 datac = g_try_malloc (data_len);
1084 if (!datac) {
1085 if (status)
1086 *status = MONO_IMAGE_ERROR_ERRNO;
1087 return NULL;
1088 }
1089 memcpy (datac, data, data_len);
1090 }
1091
1092 image = g_new0 (MonoImage, 1);
1093 image->raw_data = datac;
1094 image->raw_data_len = data_len;
1095 image->raw_data_allocated = need_copy;
1096 image->name = g_strdup_printf ("data-%p", datac);
1097 iinfo = g_new0 (MonoCLIImageInfo, 1);
1098 image->image_info = iinfo;
1099 image->ref_only = refonly;
1100
1101 image = do_mono_image_load (image, status, TRUE, TRUE);
1102 if (image == NULL)
1103 return NULL;
1104
1105 return register_image (image);
1106 }
1107
1108 MonoImage *
1109 mono_image_open_from_data (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status)
1110 {
1111 return mono_image_open_from_data_full (data, data_len, need_copy, status, FALSE);
1112 }
1113
1114 #ifdef HOST_WIN32
1115 /* fname is not duplicated. */
1116 MonoImage*
1117 mono_image_open_from_module_handle (HMODULE module_handle, char* fname, gboolean has_entry_point, MonoImageOpenStatus* status)
1118 {
1119 MonoImage* image;
1120 MonoCLIImageInfo* iinfo;
1121
1122 image = g_new0 (MonoImage, 1);
1123 image->raw_data = (char*) module_handle;
1124 image->is_module_handle = TRUE;
1125 iinfo = g_new0 (MonoCLIImageInfo, 1);
1126 image->image_info = iinfo;
1127 image->name = fname;
1128 image->ref_count = has_entry_point ? 0 : 1;
1129 image->has_entry_point = has_entry_point;
1130
1131 image = do_mono_image_load (image, status, TRUE, TRUE);
1132 if (image == NULL)
1133 return NULL;
1134
1135 return register_image (image);
1136 }
1137 #endif
1138
1139 MonoImage *
1140 mono_image_open_full (const char *fname, MonoImageOpenStatus *status, gboolean refonly)
1141 {
1142 MonoImage *image;
1143 GHashTable *loaded_images;
1144 char *absfname;
1145
1146 g_return_val_if_fail (fname != NULL, NULL);
1147
1148 #ifdef HOST_WIN32
1149 /* Load modules using LoadLibrary. */
1150 if (!refonly && coree_module_handle) {
1151 HMODULE module_handle;
1152 guint16 *fname_utf16;
1153 DWORD last_error;
1154
1155 absfname = mono_path_resolve_symlinks (fname);
1156 fname_utf16 = NULL;
1157
1158 /* There is little overhead because the OS loader lock is held by LoadLibrary. */
1159 mono_images_lock ();
1160 image = g_hash_table_lookup (loaded_images_hash, absfname);
1161 if (image) {
1162 g_assert (image->is_module_handle);
1163 if (image->has_entry_point && image->ref_count == 0) {
1164 /* Increment reference count on images loaded outside of the runtime. */
1165 fname_utf16 = g_utf8_to_utf16 (absfname, -1, NULL, NULL, NULL);
1166 /* The image is already loaded because _CorDllMain removes images from the hash. */
1167 module_handle = LoadLibrary (fname_utf16);
1168 g_assert (module_handle == (HMODULE) image->raw_data);
1169 }
1170 mono_image_addref (image);
1171 mono_images_unlock ();
1172 if (fname_utf16)
1173 g_free (fname_utf16);
1174 g_free (absfname);
1175 return image;
1176 }
1177
1178 fname_utf16 = g_utf8_to_utf16 (absfname, -1, NULL, NULL, NULL);
1179 module_handle = MonoLoadImage (fname_utf16);
1180 if (status && module_handle == NULL)
1181 last_error = GetLastError ();
1182
1183 /* mono_image_open_from_module_handle is called by _CorDllMain. */
1184 image = g_hash_table_lookup (loaded_images_hash, absfname);
1185 if (image)
1186 mono_image_addref (image);
1187 mono_images_unlock ();
1188
1189 g_free (fname_utf16);
1190
1191 if (module_handle == NULL) {
1192 g_assert (!image);
1193 g_free (absfname);
1194 if (status) {
1195 if (last_error == ERROR_BAD_EXE_FORMAT || last_error == STATUS_INVALID_IMAGE_FORMAT)
1196 *status = MONO_IMAGE_IMAGE_INVALID;
1197 else
1198 *status = MONO_IMAGE_ERROR_ERRNO;
1199 }
1200 return NULL;
1201 }
1202
1203 if (image) {
1204 g_assert (image->is_module_handle);
1205 g_assert (image->has_entry_point);
1206 g_free (absfname);
1207 return image;
1208 }
1209
1210 return mono_image_open_from_module_handle (module_handle, absfname, FALSE, status);
1211 }
1212 #endif
1213
1214 absfname = mono_path_canonicalize (fname);
1215
1216 /*
1217 * The easiest solution would be to do all the loading inside the mutex,
1218 * but that would lead to scalability problems. So we let the loading
1219 * happen outside the mutex, and if multiple threads happen to load
1220 * the same image, we discard all but the first copy.
1221 */
1222 mono_images_lock ();
1223 loaded_images = refonly ? loaded_images_refonly_hash : loaded_images_hash;
1224 image = g_hash_table_lookup (loaded_images, absfname);
1225 g_free (absfname);
1226
1227 if (image){
1228 mono_image_addref (image);
1229 mono_images_unlock ();
1230 return image;
1231 }
1232 mono_images_unlock ();
1233
1234 image = do_mono_image_open (fname, status, TRUE, TRUE, refonly);
1235 if (image == NULL)
1236 return NULL;
1237
1238 return register_image (image);
1239 }
1240
1241 /**
1242 * mono_image_open:
1243 * @fname: filename that points to the module we want to open
1244 * @status: An error condition is returned in this field
1245 *
1246 * Returns: An open image of type %MonoImage or NULL on error.
1247 * The caller holds a temporary reference to the returned image which should be cleared
1248 * when no longer needed by calling mono_image_close ().
1249 * if NULL, then check the value of @status for details on the error
1250 */
1251 MonoImage *
1252 mono_image_open (const char *fname, MonoImageOpenStatus *status)
1253 {
1254 return mono_image_open_full (fname, status, FALSE);
1255 }
1256
1257 /**
1258 * mono_pe_file_open:
1259 * @fname: filename that points to the module we want to open
1260 * @status: An error condition is returned in this field
1261 *
1262 * Returns: An open image of type %MonoImage or NULL on error. if
1263 * NULL, then check the value of @status for details on the error.
1264 * This variant for mono_image_open DOES NOT SET UP CLI METADATA.
1265 * It's just a PE file loader, used for FileVersionInfo. It also does
1266 * not use the image cache.
1267 */
1268 MonoImage *
1269 mono_pe_file_open (const char *fname, MonoImageOpenStatus *status)
1270 {
1271 g_return_val_if_fail (fname != NULL, NULL);
1272
1273 return(do_mono_image_open (fname, status, FALSE, TRUE, FALSE));
1274 }
1275
1276 /**
1277 * mono_image_open_raw
1278 * @fname: filename that points to the module we want to open
1279 * @status: An error condition is returned in this field
1280 *
1281 * Returns an image without loading neither pe or cli data.
1282 *
1283 * Use mono_image_load_pe_data and mono_image_load_cli_data to load them.
1284 */
1285 MonoImage *
1286 mono_image_open_raw (const char *fname, MonoImageOpenStatus *status)
1287 {
1288 g_return_val_if_fail (fname != NULL, NULL);
1289
1290 return(do_mono_image_open (fname, status, FALSE, FALSE, FALSE));
1291 }
1292
1293 void
1294 mono_image_fixup_vtable (MonoImage *image)
1295 {
1296 #ifdef HOST_WIN32
1297 MonoCLIImageInfo *iinfo;
1298 MonoPEDirEntry *de;
1299 MonoVTableFixup *vtfixup;
1300 int count;
1301 gpointer slot;
1302 guint16 slot_type;
1303 int slot_count;
1304
1305 g_assert (image->is_module_handle);
1306
1307 iinfo = image->image_info;
1308 de = &iinfo->cli_cli_header.ch_vtable_fixups;
1309 if (!de->rva || !de->size)
1310 return;
1311 vtfixup = (MonoVTableFixup*) mono_image_rva_map (image, de->rva);
1312 if (!vtfixup)
1313 return;
1314
1315 count = de->size / sizeof (MonoVTableFixup);
1316 while (count--) {
1317 if (!vtfixup->rva || !vtfixup->count)
1318 continue;
1319
1320 slot = mono_image_rva_map (image, vtfixup->rva);
1321 g_assert (slot);
1322 slot_type = vtfixup->type;
1323 slot_count = vtfixup->count;
1324 if (slot_type & VTFIXUP_TYPE_32BIT)
1325 while (slot_count--) {
1326 *((guint32*) slot) = (guint32) mono_marshal_get_vtfixup_ftnptr (image, *((guint32*) slot), slot_type);
1327 slot = ((guint32*) slot) + 1;
1328 }
1329 else if (slot_type & VTFIXUP_TYPE_64BIT)
1330 while (slot_count--) {
1331 *((guint64*) slot) = (guint64) mono_marshal_get_vtfixup_ftnptr (image, *((guint64*) slot), slot_type);
1332 slot = ((guint32*) slot) + 1;
1333 }
1334 else
1335 g_assert_not_reached();
1336
1337 vtfixup++;
1338 }
1339 #else
1340 g_assert_not_reached();
1341 #endif
1342 }
1343
1344 static void
1345 free_hash_table (gpointer key, gpointer val, gpointer user_data)
1346 {
1347 g_hash_table_destroy ((GHashTable*)val);
1348 }
1349
1350 /*
1351 static void
1352 free_mr_signatures (gpointer key, gpointer val, gpointer user_data)
1353 {
1354 mono_metadata_free_method_signature ((MonoMethodSignature*)val);
1355 }
1356 */
1357
1358 static void
1359 free_remoting_wrappers (gpointer key, gpointer val, gpointer user_data)
1360 {
1361 g_free (val);
1362 }
1363
1364 static void
1365 free_array_cache_entry (gpointer key, gpointer val, gpointer user_data)
1366 {
1367 g_slist_free ((GSList*)val);
1368 }
1369
1370 /**
1371 * mono_image_addref:
1372 * @image: The image file we wish to add a reference to
1373 *
1374 * Increases the reference count of an image.
1375 */
1376 void
1377 mono_image_addref (MonoImage *image)
1378 {
1379 InterlockedIncrement (&image->ref_count);
1380 }
1381
1382 void
1383 mono_dynamic_stream_reset (MonoDynamicStream* stream)
1384 {
1385 stream->alloc_size = stream->index = stream->offset = 0;
1386 g_free (stream->data);
1387 stream->data = NULL;
1388 if (stream->hash) {
1389 g_hash_table_destroy (stream->hash);
1390 stream->hash = NULL;
1391 }
1392 }
1393
1394 static inline void
1395 free_hash (GHashTable *hash)
1396 {
1397 if (hash)
1398 g_hash_table_destroy (hash);
1399 }
1400
1401 /*
1402 * Returns whether mono_image_close_finish() must be called as well.
1403 * We must unload images in two steps because clearing the domain in
1404 * SGen requires the class metadata to be intact, but we need to free
1405 * the mono_g_hash_tables in case a collection occurs during domain
1406 * unloading and the roots would trip up the GC.
1407 */
1408 gboolean
1409 mono_image_close_except_pools (MonoImage *image)
1410 {
1411 MonoImage *image2;
1412 GHashTable *loaded_images;
1413 int i;
1414
1415 g_return_val_if_fail (image != NULL, FALSE);
1416
1417 /*
1418 * Atomically decrement the refcount and remove ourselves from the hash tables, so
1419 * register_image () can't grab an image which is being closed.
1420 */
1421 mono_images_lock ();
1422
1423 if (InterlockedDecrement (&image->ref_count) > 0) {
1424 mono_images_unlock ();
1425 return FALSE;
1426 }
1427
1428 loaded_images = image->ref_only ? loaded_images_refonly_hash : loaded_images_hash;
1429 image2 = g_hash_table_lookup (loaded_images, image->name);
1430 if (image == image2) {
1431 /* This is not true if we are called from mono_image_open () */
1432 g_hash_table_remove (loaded_images, image->name);
1433 }
1434 if (image->assembly_name && (g_hash_table_lookup (loaded_images, image->assembly_name) == image))
1435 g_hash_table_remove (loaded_images, (char *) image->assembly_name);
1436
1437 mono_images_unlock ();
1438
1439 #ifdef HOST_WIN32
1440 if (image->is_module_handle && image->has_entry_point) {
1441 mono_images_lock ();
1442 if (image->ref_count == 0) {
1443 /* Image will be closed by _CorDllMain. */
1444 FreeLibrary ((HMODULE) image->raw_data);
1445 mono_images_unlock ();
1446 return FALSE;
1447 }
1448 mono_images_unlock ();
1449 }
1450 #endif
1451
1452 mono_profiler_module_event (image, MONO_PROFILE_START_UNLOAD);
1453
1454 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Unloading image %s [%p].", image->name, image);
1455
1456 mono_metadata_clean_for_image (image);
1457
1458 /*
1459 * The caches inside a MonoImage might refer to metadata which is stored in referenced
1460 * assemblies, so we can't release these references in mono_assembly_close () since the
1461 * MonoImage might outlive its associated MonoAssembly.
1462 */
1463 if (image->references && !image->dynamic) {
1464 MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLYREF];
1465 int i;
1466
1467 for (i = 0; i < t->rows; i++) {
1468 if (image->references [i]) {
1469 if (!mono_assembly_close_except_image_pools (image->references [i]))
1470 image->references [i] = NULL;
1471 }
1472 }
1473 } else {
1474 if (image->references) {
1475 g_free (image->references);
1476 image->references = NULL;
1477 }
1478 }
1479
1480 #ifdef HOST_WIN32
1481 mono_images_lock ();
1482 if (image->is_module_handle && !image->has_entry_point)
1483 FreeLibrary ((HMODULE) image->raw_data);
1484 mono_images_unlock ();
1485 #endif
1486
1487 if (image->raw_buffer_used) {
1488 if (image->raw_data != NULL)
1489 mono_file_unmap (image->raw_data, image->raw_data_handle);
1490 }
1491
1492 if (image->raw_data_allocated) {
1493 /* FIXME: do we need this? (image is disposed anyway) */
1494 /* image->raw_metadata and cli_sections might lie inside image->raw_data */
1495 MonoCLIImageInfo *ii = image->image_info;
1496
1497 if ((image->raw_metadata > image->raw_data) &&
1498 (image->raw_metadata <= (image->raw_data + image->raw_data_len)))
1499 image->raw_metadata = NULL;
1500
1501 for (i = 0; i < ii->cli_section_count; i++)
1502 if (((char*)(ii->cli_sections [i]) > image->raw_data) &&
1503 ((char*)(ii->cli_sections [i]) <= ((char*)image->raw_data + image->raw_data_len)))
1504 ii->cli_sections [i] = NULL;
1505
1506 g_free (image->raw_data);
1507 }
1508
1509 if (debug_assembly_unload) {
1510 image->name = g_strdup_printf ("%s - UNLOADED", image->name);
1511 } else {
1512 g_free (image->name);
1513 g_free (image->guid);
1514 g_free (image->version);
1515 g_free (image->files);
1516 }
1517
1518 if (image->method_cache)
1519 mono_value_hash_table_destroy (image->method_cache);
1520 if (image->methodref_cache)
1521 g_hash_table_destroy (image->methodref_cache);
1522 mono_internal_hash_table_destroy (&image->class_cache);
1523 g_hash_table_destroy (image->field_cache);
1524 if (image->array_cache) {
1525 g_hash_table_foreach (image->array_cache, free_array_cache_entry, NULL);
1526 g_hash_table_destroy (image->array_cache);
1527 }
1528 if (image->szarray_cache)
1529 g_hash_table_destroy (image->szarray_cache);
1530 if (image->ptr_cache)
1531 g_hash_table_destroy (image->ptr_cache);
1532 if (image->name_cache) {
1533 g_hash_table_foreach (image->name_cache, free_hash_table, NULL);
1534 g_hash_table_destroy (image->name_cache);
1535 }
1536
1537 free_hash (image->native_wrapper_cache);
1538 free_hash (image->managed_wrapper_cache);
1539 free_hash (image->delegate_begin_invoke_cache);
1540 free_hash (image->delegate_end_invoke_cache);
1541 free_hash (image->delegate_invoke_cache);
1542 free_hash (image->delegate_abstract_invoke_cache);
1543 if (image->remoting_invoke_cache)
1544 g_hash_table_foreach (image->remoting_invoke_cache, free_remoting_wrappers, NULL);
1545 free_hash (image->remoting_invoke_cache);
1546 free_hash (image->runtime_invoke_cache);
1547 free_hash (image->runtime_invoke_direct_cache);
1548 free_hash (image->runtime_invoke_vcall_cache);
1549 free_hash (image->synchronized_cache);
1550 free_hash (image->unbox_wrapper_cache);
1551 free_hash (image->cominterop_invoke_cache);
1552 free_hash (image->cominterop_wrapper_cache);
1553 free_hash (image->typespec_cache);
1554 free_hash (image->ldfld_wrapper_cache);
1555 free_hash (image->ldflda_wrapper_cache);
1556 free_hash (image->stfld_wrapper_cache);
1557 free_hash (image->isinst_cache);
1558 free_hash (image->castclass_cache);
1559 free_hash (image->proxy_isinst_cache);
1560 free_hash (image->thunk_invoke_cache);
1561
1562 /* The ownership of signatures is not well defined */
1563 //g_hash_table_foreach (image->memberref_signatures, free_mr_signatures, NULL);
1564 g_hash_table_destroy (image->memberref_signatures);
1565 //g_hash_table_foreach (image->helper_signatures, free_mr_signatures, NULL);
1566 g_hash_table_destroy (image->helper_signatures);
1567 g_hash_table_destroy (image->method_signatures);
1568
1569 if (image->generic_class_cache)
1570 g_hash_table_destroy (image->generic_class_cache);
1571
1572 if (image->rgctx_template_hash)
1573 g_hash_table_destroy (image->rgctx_template_hash);
1574
1575 if (image->property_hash)
1576 mono_property_hash_destroy (image->property_hash);
1577
1578 g_slist_free (image->reflection_info_unregister_classes);
1579
1580 if (image->interface_bitset) {
1581 mono_unload_interface_ids (image->interface_bitset);
1582 mono_bitset_free (image->interface_bitset);
1583 }
1584 if (image->image_info){
1585 MonoCLIImageInfo *ii = image->image_info;
1586
1587 if (ii->cli_section_tables)
1588 g_free (ii->cli_section_tables);
1589 if (ii->cli_sections)
1590 g_free (ii->cli_sections);
1591 g_free (image->image_info);
1592 }
1593
1594 for (i = 0; i < image->module_count; ++i) {
1595 if (image->modules [i]) {
1596 if (!mono_image_close_except_pools (image->modules [i]))
1597 image->modules [i] = NULL;
1598 }
1599 }
1600 if (image->modules_loaded)
1601 g_free (image->modules_loaded);
1602
1603 DeleteCriticalSection (&image->szarray_cache_lock);
1604 DeleteCriticalSection (&image->lock);
1605
1606 /*g_print ("destroy image %p (dynamic: %d)\n", image, image->dynamic);*/
1607 if (image->dynamic) {
1608 /* Dynamic images are GC_MALLOCed */
1609 g_free ((char*)image->module_name);
1610 mono_dynamic_image_free ((MonoDynamicImage*)image);
1611 }
1612
1613 mono_profiler_module_event (image, MONO_PROFILE_END_UNLOAD);
1614
1615 return TRUE;
1616 }
1617
1618 void
1619 mono_image_close_finish (MonoImage *image)
1620 {
1621 int i;
1622
1623 if (image->references && !image->dynamic) {
1624 MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLYREF];
1625 int i;
1626
1627 for (i = 0; i < t->rows; i++) {
1628 if (image->references [i])
1629 mono_assembly_close_finish (image->references [i]);
1630 }
1631
1632 g_free (image->references);
1633 image->references = NULL;
1634 }
1635
1636 for (i = 0; i < image->module_count; ++i) {
1637 if (image->modules [i])
1638 mono_image_close_finish (image->modules [i]);
1639 }
1640 if (image->modules)
1641 g_free (image->modules);
1642
1643 mono_perfcounters->loader_bytes -= mono_mempool_get_allocated (image->mempool);
1644
1645 if (!image->dynamic) {
1646 if (debug_assembly_unload)
1647 mono_mempool_invalidate (image->mempool);
1648 else {
1649 mono_mempool_destroy (image->mempool);
1650 g_free (image);
1651 }
1652 } else {
1653 if (debug_assembly_unload)
1654 mono_mempool_invalidate (image->mempool);
1655 else
1656 mono_mempool_destroy (image->mempool);
1657 }
1658 }
1659
1660 /**
1661 * mono_image_close:
1662 * @image: The image file we wish to close
1663 *
1664 * Closes an image file, deallocates all memory consumed and
1665 * unmaps all possible sections of the file
1666 */
1667 void
1668 mono_image_close (MonoImage *image)
1669 {
1670 if (mono_image_close_except_pools (image))
1671 mono_image_close_finish (image);
1672 }
1673
1674 /**
1675 * mono_image_strerror:
1676 * @status: an code indicating the result from a recent operation
1677 *
1678 * Returns: a string describing the error
1679 */
1680 const char *
1681 mono_image_strerror (MonoImageOpenStatus status)
1682 {
1683 switch (status){
1684 case MONO_IMAGE_OK:
1685 return "success";
1686 case MONO_IMAGE_ERROR_ERRNO:
1687 return strerror (errno);
1688 case MONO_IMAGE_IMAGE_INVALID:
1689 return "File does not contain a valid CIL image";
1690 case MONO_IMAGE_MISSING_ASSEMBLYREF:
1691 return "An assembly was referenced, but could not be found";
1692 }
1693 return "Internal error";
1694 }
1695
1696 static gpointer
1697 mono_image_walk_resource_tree (MonoCLIImageInfo *info, guint32 res_id,
1698 guint32 lang_id, gunichar2 *name,
1699 MonoPEResourceDirEntry *entry,
1700 MonoPEResourceDir *root, guint32 level)
1701 {
1702 gboolean is_string, is_dir;
1703 guint32 name_offset, dir_offset;
1704
1705 /* Level 0 holds a directory entry for each type of resource
1706 * (identified by ID or name).
1707 *
1708 * Level 1 holds a directory entry for each named resource
1709 * item, and each "anonymous" item of a particular type of
1710 * resource.
1711 *
1712 * Level 2 holds a directory entry for each language pointing to
1713 * the actual data.
1714 */
1715 is_string = MONO_PE_RES_DIR_ENTRY_NAME_IS_STRING (*entry);
1716 name_offset = MONO_PE_RES_DIR_ENTRY_NAME_OFFSET (*entry);
1717
1718 is_dir = MONO_PE_RES_DIR_ENTRY_IS_DIR (*entry);
1719 dir_offset = MONO_PE_RES_DIR_ENTRY_DIR_OFFSET (*entry);
1720
1721 if(level==0) {
1722 if (is_string)
1723 return NULL;
1724 } else if (level==1) {
1725 if (res_id != name_offset)
1726 return NULL;
1727 #if 0
1728 if(name!=NULL &&
1729 is_string==TRUE && name!=lookup (name_offset)) {
1730 return(NULL);
1731 }
1732 #endif
1733 } else if (level==2) {
1734 if (is_string == TRUE || (is_string == FALSE && lang_id != 0 && name_offset != lang_id))
1735 return NULL;
1736 } else {
1737 g_assert_not_reached ();
1738 }
1739
1740 if(is_dir==TRUE) {
1741 MonoPEResourceDir *res_dir=(MonoPEResourceDir *)(((char *)root)+dir_offset);
1742 MonoPEResourceDirEntry *sub_entries=(MonoPEResourceDirEntry *)(res_dir+1);
1743 guint32 entries, i;
1744
1745 entries = GUINT16_FROM_LE (res_dir->res_named_entries) + GUINT16_FROM_LE (res_dir->res_id_entries);
1746
1747 for(i=0; i<entries; i++) {
1748 MonoPEResourceDirEntry *sub_entry=&sub_entries[i];
1749 gpointer ret;
1750
1751 ret=mono_image_walk_resource_tree (info, res_id,
1752 lang_id, name,
1753 sub_entry, root,
1754 level+1);
1755 if(ret!=NULL) {
1756 return(ret);
1757 }
1758 }
1759
1760 return(NULL);
1761 } else {
1762 MonoPEResourceDataEntry *data_entry=(MonoPEResourceDataEntry *)((char *)(root)+dir_offset);
1763 MonoPEResourceDataEntry *res;
1764
1765 res = g_new0 (MonoPEResourceDataEntry, 1);
1766
1767 res->rde_data_offset = GUINT32_TO_LE (data_entry->rde_data_offset);
1768 res->rde_size = GUINT32_TO_LE (data_entry->rde_size);
1769 res->rde_codepage = GUINT32_TO_LE (data_entry->rde_codepage);
1770 res->rde_reserved = GUINT32_TO_LE (data_entry->rde_reserved);
1771
1772 return (res);
1773 }
1774 }
1775
1776 /**
1777 * mono_image_lookup_resource:
1778 * @image: the image to look up the resource in
1779 * @res_id: A MONO_PE_RESOURCE_ID_ that represents the resource ID to lookup.
1780 * @lang_id: The language id.
1781 * @name: the resource name to lookup.
1782 *
1783 * Returns: NULL if not found, otherwise a pointer to the in-memory representation
1784 * of the given resource. The caller should free it using g_free () when no longer
1785 * needed.
1786 */
1787 gpointer
1788 mono_image_lookup_resource (MonoImage *image, guint32 res_id, guint32 lang_id, gunichar2 *name)
1789 {
1790 MonoCLIImageInfo *info;
1791 MonoDotNetHeader *header;
1792 MonoPEDatadir *datadir;
1793 MonoPEDirEntry *rsrc;
1794 MonoPEResourceDir *resource_dir;
1795 MonoPEResourceDirEntry *res_entries;
1796 guint32 entries, i;
1797
1798 if(image==NULL) {
1799 return(NULL);
1800 }
1801
1802 mono_image_ensure_section_idx (image, MONO_SECTION_RSRC);
1803
1804 info=image->image_info;
1805 if(info==NULL) {
1806 return(NULL);
1807 }
1808
1809 header=&info->cli_header;
1810 if(header==NULL) {
1811 return(NULL);
1812 }
1813
1814 datadir=&header->datadir;
1815 if(datadir==NULL) {
1816 return(NULL);
1817 }
1818
1819 rsrc=&datadir->pe_resource_table;
1820 if(rsrc==NULL) {
1821 return(NULL);
1822 }
1823
1824 resource_dir=(MonoPEResourceDir *)mono_image_rva_map (image, rsrc->rva);
1825 if(resource_dir==NULL) {
1826 return(NULL);
1827 }
1828
1829 entries = GUINT16_FROM_LE (resource_dir->res_named_entries) + GUINT16_FROM_LE (resource_dir->res_id_entries);
1830 res_entries=(MonoPEResourceDirEntry *)(resource_dir+1);
1831
1832 for(i=0; i<entries; i++) {
1833 MonoPEResourceDirEntry *entry=&res_entries[i];
1834 gpointer ret;
1835
1836 ret=mono_image_walk_resource_tree (info, res_id, lang_id,
1837 name, entry, resource_dir,
1838 0);
1839 if(ret!=NULL) {
1840 return(ret);
1841 }
1842 }
1843
1844 return(NULL);
1845 }
1846
1847 /**
1848 * mono_image_get_entry_point:
1849 * @image: the image where the entry point will be looked up.
1850 *
1851 * Use this routine to determine the metadata token for method that
1852 * has been flagged as the entry point.
1853 *
1854 * Returns: the token for the entry point method in the image
1855 */
1856 guint32
1857 mono_image_get_entry_point (MonoImage *image)
1858 {
1859 return ((MonoCLIImageInfo*)image->image_info)->cli_cli_header.ch_entry_point;
1860 }
1861
1862 /**
1863 * mono_image_get_resource:
1864 * @image: the image where the resource will be looked up.
1865 * @offset: The offset to add to the resource
1866 * @size: a pointer to an int where the size of the resource will be stored
1867 *
1868 * This is a low-level routine that fetches a resource from the
1869 * metadata that starts at a given @offset. The @size parameter is
1870 * filled with the data field as encoded in the metadata.
1871 *
1872 * Returns: the pointer to the resource whose offset is @offset.
1873 */
1874 const char*
1875 mono_image_get_resource (MonoImage *image, guint32 offset, guint32 *size)
1876 {
1877 MonoCLIImageInfo *iinfo = image->image_info;
1878 MonoCLIHeader *ch = &iinfo->cli_cli_header;
1879 const char* data;
1880
1881 if (!ch->ch_resources.rva || offset + 4 > ch->ch_resources.size)
1882 return NULL;
1883
1884 data = mono_image_rva_map (image, ch->ch_resources.rva);
1885 if (!data)
1886 return NULL;
1887 data += offset;
1888 if (size)
1889 *size = read32 (data);
1890 data += 4;
1891 return data;
1892 }
1893
1894 MonoImage*
1895 mono_image_load_file_for_image (MonoImage *image, int fileidx)
1896 {
1897 char *base_dir, *name;
1898 MonoImage *res;
1899 MonoTableInfo *t = &image->tables [MONO_TABLE_FILE];
1900 const char *fname;
1901 guint32 fname_id;
1902
1903 if (fileidx < 1 || fileidx > t->rows)
1904 return NULL;
1905
1906 mono_loader_lock ();
1907 if (image->files && image->files [fileidx - 1]) {
1908 mono_loader_unlock ();
1909 return image->files [fileidx - 1];
1910 }
1911
1912 if (!image->files)
1913 image->files = g_new0 (MonoImage*, t->rows);
1914
1915 fname_id = mono_metadata_decode_row_col (t, fileidx - 1, MONO_FILE_NAME);
1916 fname = mono_metadata_string_heap (image, fname_id);
1917 base_dir = g_path_get_dirname (image->name);
1918 name = g_build_filename (base_dir, fname, NULL);
1919 res = mono_image_open (name, NULL);
1920 if (res) {
1921 int i;
1922 /* g_print ("loaded file %s from %s (%p)\n", name, image->name, image->assembly); */
1923 res->assembly = image->assembly;
1924 for (i = 0; i < res->module_count; ++i) {
1925 if (res->modules [i] && !res->modules [i]->assembly)
1926 res->modules [i]->assembly = image->assembly;
1927 }
1928
1929 image->files [fileidx - 1] = res;
1930 #ifdef HOST_WIN32
1931 if (res->is_module_handle)
1932 mono_image_fixup_vtable (res);
1933 #endif
1934 }
1935 mono_loader_unlock ();
1936 g_free (name);
1937 g_free (base_dir);
1938 return res;
1939 }
1940
1941 /**
1942 * mono_image_get_strong_name:
1943 * @image: a MonoImage
1944 * @size: a guint32 pointer, or NULL.
1945 *
1946 * If the image has a strong name, and @size is not NULL, the value
1947 * pointed to by size will have the size of the strong name.
1948 *
1949 * Returns: NULL if the image does not have a strong name, or a
1950 * pointer to the public key.
1951 */
1952 const char*
1953 mono_image_get_strong_name (MonoImage *image, guint32 *size)
1954 {
1955 MonoCLIImageInfo *iinfo = image->image_info;
1956 MonoPEDirEntry *de = &iinfo->cli_cli_header.ch_strong_name;
1957 const char* data;
1958
1959 if (!de->size || !de->rva)
1960 return NULL;
1961 data = mono_image_rva_map (image, de->rva);
1962 if (!data)
1963 return NULL;
1964 if (size)
1965 *size = de->size;
1966 return data;
1967 }
1968
1969 /**
1970 * mono_image_strong_name_position:
1971 * @image: a MonoImage
1972 * @size: a guint32 pointer, or NULL.
1973 *
1974 * If the image has a strong name, and @size is not NULL, the value
1975 * pointed to by size will have the size of the strong name.
1976 *
1977 * Returns: the position within the image file where the strong name
1978 * is stored.
1979 */
1980 guint32
1981 mono_image_strong_name_position (MonoImage *image, guint32 *size)
1982 {
1983 MonoCLIImageInfo *iinfo = image->image_info;
1984 MonoPEDirEntry *de = &iinfo->cli_cli_header.ch_strong_name;
1985 guint32 pos;
1986
1987 if (size)
1988 *size = de->size;
1989 if (!de->size || !de->rva)
1990 return 0;
1991 pos = mono_cli_rva_image_map (image, de->rva);
1992 return pos == INVALID_ADDRESS ? 0 : pos;
1993 }
1994
1995 /**
1996 * mono_image_get_public_key:
1997 * @image: a MonoImage
1998 * @size: a guint32 pointer, or NULL.
1999 *
2000 * This is used to obtain the public key in the @image.
2001 *
2002 * If the image has a public key, and @size is not NULL, the value
2003 * pointed to by size will have the size of the public key.
2004 *
2005 * Returns: NULL if the image does not have a public key, or a pointer
2006 * to the public key.
2007 */
2008 const char*
2009 mono_image_get_public_key (MonoImage *image, guint32 *size)
2010 {
2011 const char *pubkey;
2012 guint32 len, tok;
2013
2014 if (image->dynamic) {
2015 if (size)
2016 *size = ((MonoDynamicImage*)image)->public_key_len;
2017 return (char*)((MonoDynamicImage*)image)->public_key;
2018 }
2019 if (image->tables [MONO_TABLE_ASSEMBLY].rows != 1)
2020 return NULL;
2021 tok = mono_metadata_decode_row_col (&image->tables [MONO_TABLE_ASSEMBLY], 0, MONO_ASSEMBLY_PUBLIC_KEY);
2022 if (!tok)
2023 return NULL;
2024 pubkey = mono_metadata_blob_heap (image, tok);
2025 len = mono_metadata_decode_blob_size (pubkey, &pubkey);
2026 if (size)
2027 *size = len;
2028 return pubkey;
2029 }
2030
2031 /**
2032 * mono_image_get_name:
2033 * @name: a MonoImage
2034 *
2035 * Returns: the name of the assembly.
2036 */
2037 const char*
2038 mono_image_get_name (MonoImage *image)
2039 {
2040 return image->assembly_name;
2041 }
2042
2043 /**
2044 * mono_image_get_filename:
2045 * @image: a MonoImage
2046 *
2047 * Used to get the filename that hold the actual MonoImage
2048 *
2049 * Returns: the filename.
2050 */
2051 const char*
2052 mono_image_get_filename (MonoImage *image)
2053 {
2054 return image->name;
2055 }
2056
2057 const char*
2058 mono_image_get_guid (MonoImage *image)
2059 {
2060 return image->guid;
2061 }
2062
2063 const MonoTableInfo*
2064 mono_image_get_table_info (MonoImage *image, int table_id)
2065 {
2066 if (table_id < 0 || table_id >= MONO_TABLE_NUM)
2067 return NULL;
2068 return &image->tables [table_id];
2069 }
2070
2071 int
2072 mono_image_get_table_rows (MonoImage *image, int table_id)
2073 {
2074 if (table_id < 0 || table_id >= MONO_TABLE_NUM)
2075 return 0;
2076 return image->tables [table_id].rows;
2077 }
2078
2079 int
2080 mono_table_info_get_rows (const MonoTableInfo *table)
2081 {
2082 return table->rows;
2083 }
2084
2085 /**
2086 * mono_image_get_assembly:
2087 * @image: the MonoImage.
2088 *
2089 * Use this routine to get the assembly that owns this image.
2090 *
2091 * Returns: the assembly that holds this image.
2092 */
2093 MonoAssembly*
2094 mono_image_get_assembly (MonoImage *image)
2095 {
2096 return image->assembly;
2097 }
2098
2099 /**
2100 * mono_image_is_dynamic:
2101 * @image: the MonoImage
2102 *
2103 * Determines if the given image was created dynamically through the
2104 * System.Reflection.Emit API
2105 *
2106 * Returns: TRUE if the image was created dynamically, FALSE if not.
2107 */
2108 gboolean
2109 mono_image_is_dynamic (MonoImage *image)
2110 {
2111 return image->dynamic;
2112 }
2113
2114 /**
2115 * mono_image_has_authenticode_entry:
2116 * @image: the MonoImage
2117 *
2118 * Use this routine to determine if the image has a Authenticode
2119 * Certificate Table.
2120 *
2121 * Returns: TRUE if the image contains an authenticode entry in the PE
2122 * directory.
2123 */
2124 gboolean
2125 mono_image_has_authenticode_entry (MonoImage *image)
2126 {
2127 MonoCLIImageInfo *iinfo = image->image_info;
2128 MonoDotNetHeader *header = &iinfo->cli_header;
2129 MonoPEDirEntry *de = &header->datadir.pe_certificate_table;
2130 // the Authenticode "pre" (non ASN.1) header is 8 bytes long
2131 return ((de->rva != 0) && (de->size > 8));
2132 }
2133
2134 gpointer
2135 mono_image_alloc (MonoImage *image, guint size)
2136 {
2137 gpointer res;
2138
2139 mono_perfcounters->loader_bytes += size;
2140 mono_image_lock (image);
2141 res = mono_mempool_alloc (image->mempool, size);
2142 mono_image_unlock (image);
2143
2144 return res;
2145 }
2146
2147 gpointer
2148 mono_image_alloc0 (MonoImage *image, guint size)
2149 {
2150 gpointer res;
2151
2152 mono_perfcounters->loader_bytes += size;
2153 mono_image_lock (image);
2154 res = mono_mempool_alloc0 (image->mempool, size);
2155 mono_image_unlock (image);
2156
2157 return res;
2158 }
2159
2160 char*
2161 mono_image_strdup (MonoImage *image, const char *s)
2162 {
2163 char *res;
2164
2165 mono_perfcounters->loader_bytes += strlen (s);
2166 mono_image_lock (image);
2167 res = mono_mempool_strdup (image->mempool, s);
2168 mono_image_unlock (image);
2169
2170 return res;
2171 }
2172
2173 GList*
2174 g_list_prepend_image (MonoImage *image, GList *list, gpointer data)
2175 {
2176 GList *new_list;
2177
2178 new_list = mono_image_alloc (image, sizeof (GList));
2179 new_list->data = data;
2180 new_list->prev = list ? list->prev : NULL;
2181 new_list->next = list;
2182
2183 if (new_list->prev)
2184 new_list->prev->next = new_list;
2185 if (list)
2186 list->prev = new_list;
2187
2188 return new_list;
2189 }
2190
2191 GSList*
2192 g_slist_append_image (MonoImage *image, GSList *list, gpointer data)
2193 {
2194 GSList *new_list;
2195
2196 new_list = mono_image_alloc (image, sizeof (GSList));
2197 new_list->data = data;
2198 new_list->next = NULL;
2199
2200 return g_slist_concat (list, new_list);
2201 }
2202
2203 void
2204 mono_image_lock (MonoImage *image)
2205 {
2206 mono_locks_acquire (&image->lock, ImageDataLock);
2207 }
2208
2209 void
2210 mono_image_unlock (MonoImage *image)
2211 {
2212 mono_locks_release (&image->lock, ImageDataLock);
2213 }
2214
2215
2216 /**
2217 * mono_image_property_lookup:
2218 *
2219 * Lookup a property on @image. Used to store very rare fields of MonoClass and MonoMethod.
2220 *
2221 * LOCKING: Takes the image lock
2222 */
2223 gpointer
2224 mono_image_property_lookup (MonoImage *image, gpointer subject, guint32 property)
2225 {
2226 gpointer res;
2227
2228 mono_image_lock (image);
2229 res = mono_property_hash_lookup (image->property_hash, subject, property);
2230 mono_image_unlock (image);
2231
2232 return res;
2233 }
2234
2235 /**
2236 * mono_image_property_insert:
2237 *
2238 * Insert a new property @property with value @value on @subject in @image. Used to store very rare fields of MonoClass and MonoMethod.
2239 *
2240 * LOCKING: Takes the image lock
2241 */
2242 void
2243 mono_image_property_insert (MonoImage *image, gpointer subject, guint32 property, gpointer value)
2244 {
2245 mono_image_lock (image);
2246 mono_property_hash_insert (image->property_hash, subject, property, value);
2247 mono_image_unlock (image);
2248 }
2249
2250 /**
2251 * mono_image_property_remove:
2252 *
2253 * Remove all properties associated with @subject in @image. Used to store very rare fields of MonoClass and MonoMethod.
2254 *
2255 * LOCKING: Takes the image lock
2256 */
2257 void
2258 mono_image_property_remove (MonoImage *image, gpointer subject)
2259 {
2260 mono_image_lock (image);
2261 mono_property_hash_remove_object (image->property_hash, subject);
2262 mono_image_unlock (image);
2263 }
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