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update rx (mobile builds).
[mono-project.git] / mono / metadata / image.c
blob763aa720af865f9428450a77e42d9d7ba2eff358
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-internal.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 <mono/metadata/verify.h>
40 #include <sys/types.h>
41 #include <sys/stat.h>
42 #ifdef HAVE_UNISTD_H
43 #include <unistd.h>
44 #endif
45
46 #define INVALID_ADDRESS 0xffffffff
47
48 /*
49 * Keeps track of the various assemblies loaded
50 */
51 static GHashTable *loaded_images_hash;
52 static GHashTable *loaded_images_refonly_hash;
53
54 static gboolean debug_assembly_unload = FALSE;
55
56 #define mono_images_lock() if (mutex_inited) EnterCriticalSection (&images_mutex)
57 #define mono_images_unlock() if (mutex_inited) LeaveCriticalSection (&images_mutex)
58 static gboolean mutex_inited;
59 static CRITICAL_SECTION images_mutex;
60
61 typedef struct ImageUnloadHook ImageUnloadHook;
62 struct ImageUnloadHook {
63 MonoImageUnloadFunc func;
64 gpointer user_data;
65 };
66
67 GSList *image_unload_hooks;
68
69 void
70 mono_install_image_unload_hook (MonoImageUnloadFunc func, gpointer user_data)
71 {
72 ImageUnloadHook *hook;
73
74 g_return_if_fail (func != NULL);
75
76 hook = g_new0 (ImageUnloadHook, 1);
77 hook->func = func;
78 hook->user_data = user_data;
79 image_unload_hooks = g_slist_prepend (image_unload_hooks, hook);
80 }
81
82 void
83 mono_remove_image_unload_hook (MonoImageUnloadFunc func, gpointer user_data)
84 {
85 GSList *l;
86 ImageUnloadHook *hook;
87
88 for (l = image_unload_hooks; l; l = l->next) {
89 hook = l->data;
90
91 if (hook->func == func && hook->user_data == user_data) {
92 g_free (hook);
93 image_unload_hooks = g_slist_delete_link (image_unload_hooks, l);
94 break;
95 }
96 }
97 }
98
99 static void
100 mono_image_invoke_unload_hook (MonoImage *image)
101 {
102 GSList *l;
103 ImageUnloadHook *hook;
104
105 for (l = image_unload_hooks; l; l = l->next) {
106 hook = l->data;
107
108 hook->func (image, hook->user_data);
109 }
110 }
111
112 /* returns offset relative to image->raw_data */
113 guint32
114 mono_cli_rva_image_map (MonoImage *image, guint32 addr)
115 {
116 MonoCLIImageInfo *iinfo = image->image_info;
117 const int top = iinfo->cli_section_count;
118 MonoSectionTable *tables = iinfo->cli_section_tables;
119 int i;
120
121 for (i = 0; i < top; i++){
122 if ((addr >= tables->st_virtual_address) &&
123 (addr < tables->st_virtual_address + tables->st_raw_data_size)){
124 #ifdef HOST_WIN32
125 if (image->is_module_handle)
126 return addr;
127 #endif
128 return addr - tables->st_virtual_address + tables->st_raw_data_ptr;
129 }
130 tables++;
131 }
132 return INVALID_ADDRESS;
133 }
134
135 /**
136 * mono_images_rva_map:
137 * @image: a MonoImage
138 * @addr: relative virtual address (RVA)
139 *
140 * This is a low-level routine used by the runtime to map relative
141 * virtual address (RVA) into their location in memory.
142 *
143 * Returns: the address in memory for the given RVA, or NULL if the
144 * RVA is not valid for this image.
145 */
146 char *
147 mono_image_rva_map (MonoImage *image, guint32 addr)
148 {
149 MonoCLIImageInfo *iinfo = image->image_info;
150 const int top = iinfo->cli_section_count;
151 MonoSectionTable *tables = iinfo->cli_section_tables;
152 int i;
153
154 for (i = 0; i < top; i++){
155 if ((addr >= tables->st_virtual_address) &&
156 (addr < tables->st_virtual_address + tables->st_raw_data_size)){
157 if (!iinfo->cli_sections [i]) {
158 if (!mono_image_ensure_section_idx (image, i))
159 return NULL;
160 }
161 #ifdef HOST_WIN32
162 if (image->is_module_handle)
163 return image->raw_data + addr;
164 #endif
165 return (char*)iinfo->cli_sections [i] +
166 (addr - tables->st_virtual_address);
167 }
168 tables++;
169 }
170 return NULL;
171 }
172
173 /**
174 * mono_images_init:
175 *
176 * Initialize the global variables used by this module.
177 */
178 void
179 mono_images_init (void)
180 {
181 InitializeCriticalSection (&images_mutex);
182
183 loaded_images_hash = g_hash_table_new (g_str_hash, g_str_equal);
184 loaded_images_refonly_hash = g_hash_table_new (g_str_hash, g_str_equal);
185
186 debug_assembly_unload = g_getenv ("MONO_DEBUG_ASSEMBLY_UNLOAD") != NULL;
187
188 mutex_inited = TRUE;
189 }
190
191 /**
192 * mono_images_cleanup:
193 *
194 * Free all resources used by this module.
195 */
196 void
197 mono_images_cleanup (void)
198 {
199 GHashTableIter iter;
200 MonoImage *image;
201
202 DeleteCriticalSection (&images_mutex);
203
204 g_hash_table_iter_init (&iter, loaded_images_hash);
205 while (g_hash_table_iter_next (&iter, NULL, (void**)&image))
206 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly image '%s' still loaded at shutdown.", image->name);
207
208 g_hash_table_destroy (loaded_images_hash);
209 g_hash_table_destroy (loaded_images_refonly_hash);
210
211 mutex_inited = FALSE;
212 }
213
214 /**
215 * mono_image_ensure_section_idx:
216 * @image: The image we are operating on
217 * @section: section number that we will load/map into memory
218 *
219 * This routine makes sure that we have an in-memory copy of
220 * an image section (.text, .rsrc, .data).
221 *
222 * Returns: TRUE on success
223 */
224 int
225 mono_image_ensure_section_idx (MonoImage *image, int section)
226 {
227 MonoCLIImageInfo *iinfo = image->image_info;
228 MonoSectionTable *sect;
229 gboolean writable;
230
231 g_return_val_if_fail (section < iinfo->cli_section_count, FALSE);
232
233 if (iinfo->cli_sections [section] != NULL)
234 return TRUE;
235
236 sect = &iinfo->cli_section_tables [section];
237
238 writable = sect->st_flags & SECT_FLAGS_MEM_WRITE;
239
240 if (sect->st_raw_data_ptr + sect->st_raw_data_size > image->raw_data_len)
241 return FALSE;
242 #ifdef HOST_WIN32
243 if (image->is_module_handle)
244 iinfo->cli_sections [section] = image->raw_data + sect->st_virtual_address;
245 else
246 #endif
247 /* FIXME: we ignore the writable flag since we don't patch the binary */
248 iinfo->cli_sections [section] = image->raw_data + sect->st_raw_data_ptr;
249 return TRUE;
250 }
251
252 /**
253 * mono_image_ensure_section:
254 * @image: The image we are operating on
255 * @section: section name that we will load/map into memory
256 *
257 * This routine makes sure that we have an in-memory copy of
258 * an image section (.text, .rsrc, .data).
259 *
260 * Returns: TRUE on success
261 */
262 int
263 mono_image_ensure_section (MonoImage *image, const char *section)
264 {
265 MonoCLIImageInfo *ii = image->image_info;
266 int i;
267
268 for (i = 0; i < ii->cli_section_count; i++){
269 if (strncmp (ii->cli_section_tables [i].st_name, section, 8) != 0)
270 continue;
271
272 return mono_image_ensure_section_idx (image, i);
273 }
274 return FALSE;
275 }
276
277 static int
278 load_section_tables (MonoImage *image, MonoCLIImageInfo *iinfo, guint32 offset)
279 {
280 const int top = iinfo->cli_header.coff.coff_sections;
281 int i;
282
283 iinfo->cli_section_count = top;
284 iinfo->cli_section_tables = g_new0 (MonoSectionTable, top);
285 iinfo->cli_sections = g_new0 (void *, top);
286
287 for (i = 0; i < top; i++){
288 MonoSectionTable *t = &iinfo->cli_section_tables [i];
289
290 if (offset + sizeof (MonoSectionTable) > image->raw_data_len)
291 return FALSE;
292 memcpy (t, image->raw_data + offset, sizeof (MonoSectionTable));
293 offset += sizeof (MonoSectionTable);
294
295 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
296 t->st_virtual_size = GUINT32_FROM_LE (t->st_virtual_size);
297 t->st_virtual_address = GUINT32_FROM_LE (t->st_virtual_address);
298 t->st_raw_data_size = GUINT32_FROM_LE (t->st_raw_data_size);
299 t->st_raw_data_ptr = GUINT32_FROM_LE (t->st_raw_data_ptr);
300 t->st_reloc_ptr = GUINT32_FROM_LE (t->st_reloc_ptr);
301 t->st_lineno_ptr = GUINT32_FROM_LE (t->st_lineno_ptr);
302 t->st_reloc_count = GUINT16_FROM_LE (t->st_reloc_count);
303 t->st_line_count = GUINT16_FROM_LE (t->st_line_count);
304 t->st_flags = GUINT32_FROM_LE (t->st_flags);
305 #endif
306 /* consistency checks here */
307 }
308
309 return TRUE;
310 }
311
312 static gboolean
313 load_cli_header (MonoImage *image, MonoCLIImageInfo *iinfo)
314 {
315 guint32 offset;
316
317 offset = mono_cli_rva_image_map (image, iinfo->cli_header.datadir.pe_cli_header.rva);
318 if (offset == INVALID_ADDRESS)
319 return FALSE;
320
321 if (offset + sizeof (MonoCLIHeader) > image->raw_data_len)
322 return FALSE;
323 memcpy (&iinfo->cli_cli_header, image->raw_data + offset, sizeof (MonoCLIHeader));
324
325 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
326 #define SWAP32(x) (x) = GUINT32_FROM_LE ((x))
327 #define SWAP16(x) (x) = GUINT16_FROM_LE ((x))
328 #define SWAPPDE(x) do { (x).rva = GUINT32_FROM_LE ((x).rva); (x).size = GUINT32_FROM_LE ((x).size);} while (0)
329 SWAP32 (iinfo->cli_cli_header.ch_size);
330 SWAP32 (iinfo->cli_cli_header.ch_flags);
331 SWAP32 (iinfo->cli_cli_header.ch_entry_point);
332 SWAP16 (iinfo->cli_cli_header.ch_runtime_major);
333 SWAP16 (iinfo->cli_cli_header.ch_runtime_minor);
334 SWAPPDE (iinfo->cli_cli_header.ch_metadata);
335 SWAPPDE (iinfo->cli_cli_header.ch_resources);
336 SWAPPDE (iinfo->cli_cli_header.ch_strong_name);
337 SWAPPDE (iinfo->cli_cli_header.ch_code_manager_table);
338 SWAPPDE (iinfo->cli_cli_header.ch_vtable_fixups);
339 SWAPPDE (iinfo->cli_cli_header.ch_export_address_table_jumps);
340 SWAPPDE (iinfo->cli_cli_header.ch_eeinfo_table);
341 SWAPPDE (iinfo->cli_cli_header.ch_helper_table);
342 SWAPPDE (iinfo->cli_cli_header.ch_dynamic_info);
343 SWAPPDE (iinfo->cli_cli_header.ch_delay_load_info);
344 SWAPPDE (iinfo->cli_cli_header.ch_module_image);
345 SWAPPDE (iinfo->cli_cli_header.ch_external_fixups);
346 SWAPPDE (iinfo->cli_cli_header.ch_ridmap);
347 SWAPPDE (iinfo->cli_cli_header.ch_debug_map);
348 SWAPPDE (iinfo->cli_cli_header.ch_ip_map);
349 #undef SWAP32
350 #undef SWAP16
351 #undef SWAPPDE
352 #endif
353 /* Catch new uses of the fields that are supposed to be zero */
354
355 if ((iinfo->cli_cli_header.ch_eeinfo_table.rva != 0) ||
356 (iinfo->cli_cli_header.ch_helper_table.rva != 0) ||
357 (iinfo->cli_cli_header.ch_dynamic_info.rva != 0) ||
358 (iinfo->cli_cli_header.ch_delay_load_info.rva != 0) ||
359 (iinfo->cli_cli_header.ch_module_image.rva != 0) ||
360 (iinfo->cli_cli_header.ch_external_fixups.rva != 0) ||
361 (iinfo->cli_cli_header.ch_ridmap.rva != 0) ||
362 (iinfo->cli_cli_header.ch_debug_map.rva != 0) ||
363 (iinfo->cli_cli_header.ch_ip_map.rva != 0)){
364
365 /*
366 * No need to scare people who are testing this, I am just
367 * labelling this as a LAMESPEC
368 */
369 /* g_warning ("Some fields in the CLI header which should have been zero are not zero"); */
370
371 }
372
373 return TRUE;
374 }
375
376 static gboolean
377 load_metadata_ptrs (MonoImage *image, MonoCLIImageInfo *iinfo)
378 {
379 guint32 offset, size;
380 guint16 streams;
381 int i;
382 guint32 pad;
383 char *ptr;
384
385 offset = mono_cli_rva_image_map (image, iinfo->cli_cli_header.ch_metadata.rva);
386 if (offset == INVALID_ADDRESS)
387 return FALSE;
388
389 size = iinfo->cli_cli_header.ch_metadata.size;
390
391 if (offset + size > image->raw_data_len)
392 return FALSE;
393 image->raw_metadata = image->raw_data + offset;
394
395 /* 24.2.1: Metadata root starts here */
396 ptr = image->raw_metadata;
397
398 if (strncmp (ptr, "BSJB", 4) == 0){
399 guint32 version_string_len;
400
401 ptr += 4;
402 image->md_version_major = read16 (ptr);
403 ptr += 2;
404 image->md_version_minor = read16 (ptr);
405 ptr += 6;
406
407 version_string_len = read32 (ptr);
408 ptr += 4;
409 image->version = g_strndup (ptr, version_string_len);
410 ptr += version_string_len;
411 pad = ptr - image->raw_metadata;
412 if (pad % 4)
413 ptr += 4 - (pad % 4);
414 } else
415 return FALSE;
416
417 /* skip over flags */
418 ptr += 2;
419
420 streams = read16 (ptr);
421 ptr += 2;
422
423 for (i = 0; i < streams; i++){
424 if (strncmp (ptr + 8, "#~", 3) == 0){
425 image->heap_tables.data = image->raw_metadata + read32 (ptr);
426 image->heap_tables.size = read32 (ptr + 4);
427 ptr += 8 + 3;
428 } else if (strncmp (ptr + 8, "#Strings", 9) == 0){
429 image->heap_strings.data = image->raw_metadata + read32 (ptr);
430 image->heap_strings.size = read32 (ptr + 4);
431 ptr += 8 + 9;
432 } else if (strncmp (ptr + 8, "#US", 4) == 0){
433 image->heap_us.data = image->raw_metadata + read32 (ptr);
434 image->heap_us.size = read32 (ptr + 4);
435 ptr += 8 + 4;
436 } else if (strncmp (ptr + 8, "#Blob", 6) == 0){
437 image->heap_blob.data = image->raw_metadata + read32 (ptr);
438 image->heap_blob.size = read32 (ptr + 4);
439 ptr += 8 + 6;
440 } else if (strncmp (ptr + 8, "#GUID", 6) == 0){
441 image->heap_guid.data = image->raw_metadata + read32 (ptr);
442 image->heap_guid.size = read32 (ptr + 4);
443 ptr += 8 + 6;
444 } else if (strncmp (ptr + 8, "#-", 3) == 0) {
445 image->heap_tables.data = image->raw_metadata + read32 (ptr);
446 image->heap_tables.size = read32 (ptr + 4);
447 ptr += 8 + 3;
448 image->uncompressed_metadata = TRUE;
449 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);
450 } else {
451 g_message ("Unknown heap type: %s\n", ptr + 8);
452 ptr += 8 + strlen (ptr + 8) + 1;
453 }
454 pad = ptr - image->raw_metadata;
455 if (pad % 4)
456 ptr += 4 - (pad % 4);
457 }
458
459 g_assert (image->heap_guid.data);
460 g_assert (image->heap_guid.size >= 16);
461
462 image->guid = mono_guid_to_string ((guint8*)image->heap_guid.data);
463
464 return TRUE;
465 }
466
467 /*
468 * Load representation of logical metadata tables, from the "#~" stream
469 */
470 static gboolean
471 load_tables (MonoImage *image)
472 {
473 const char *heap_tables = image->heap_tables.data;
474 const guint32 *rows;
475 guint64 valid_mask, sorted_mask;
476 int valid = 0, table;
477 int heap_sizes;
478
479 heap_sizes = heap_tables [6];
480 image->idx_string_wide = ((heap_sizes & 0x01) == 1);
481 image->idx_guid_wide = ((heap_sizes & 0x02) == 2);
482 image->idx_blob_wide = ((heap_sizes & 0x04) == 4);
483
484 valid_mask = read64 (heap_tables + 8);
485 sorted_mask = read64 (heap_tables + 16);
486 rows = (const guint32 *) (heap_tables + 24);
487
488 for (table = 0; table < 64; table++){
489 if ((valid_mask & ((guint64) 1 << table)) == 0){
490 if (table > MONO_TABLE_LAST)
491 continue;
492 image->tables [table].rows = 0;
493 continue;
494 }
495 if (table > MONO_TABLE_LAST) {
496 g_warning("bits in valid must be zero above 0x2d (II - 23.1.6)");
497 } else {
498 image->tables [table].rows = read32 (rows);
499 }
500 /*if ((sorted_mask & ((guint64) 1 << table)) == 0){
501 g_print ("table %s (0x%02x) is sorted\n", mono_meta_table_name (table), table);
502 }*/
503 rows++;
504 valid++;
505 }
506
507 image->tables_base = (heap_tables + 24) + (4 * valid);
508
509 /* They must be the same */
510 g_assert ((const void *) image->tables_base == (const void *) rows);
511
512 mono_metadata_compute_table_bases (image);
513 return TRUE;
514 }
515
516 static gboolean
517 load_metadata (MonoImage *image, MonoCLIImageInfo *iinfo)
518 {
519 if (!load_metadata_ptrs (image, iinfo))
520 return FALSE;
521
522 return load_tables (image);
523 }
524
525 void
526 mono_image_check_for_module_cctor (MonoImage *image)
527 {
528 MonoTableInfo *t, *mt;
529 t = &image->tables [MONO_TABLE_TYPEDEF];
530 mt = &image->tables [MONO_TABLE_METHOD];
531 if (image->dynamic) {
532 /* FIXME: */
533 image->checked_module_cctor = TRUE;
534 return;
535 }
536 if (t->rows >= 1) {
537 guint32 nameidx = mono_metadata_decode_row_col (t, 0, MONO_TYPEDEF_NAME);
538 const char *name = mono_metadata_string_heap (image, nameidx);
539 if (strcmp (name, "<Module>") == 0) {
540 guint32 first_method = mono_metadata_decode_row_col (t, 0, MONO_TYPEDEF_METHOD_LIST) - 1;
541 guint32 last_method;
542 if (t->rows > 1)
543 last_method = mono_metadata_decode_row_col (t, 1, MONO_TYPEDEF_METHOD_LIST) - 1;
544 else
545 last_method = mt->rows;
546 for (; first_method < last_method; first_method++) {
547 nameidx = mono_metadata_decode_row_col (mt, first_method, MONO_METHOD_NAME);
548 name = mono_metadata_string_heap (image, nameidx);
549 if (strcmp (name, ".cctor") == 0) {
550 image->has_module_cctor = TRUE;
551 image->checked_module_cctor = TRUE;
552 return;
553 }
554 }
555 }
556 }
557 image->has_module_cctor = FALSE;
558 image->checked_module_cctor = TRUE;
559 }
560
561 static void
562 load_modules (MonoImage *image)
563 {
564 MonoTableInfo *t;
565
566 if (image->modules)
567 return;
568
569 t = &image->tables [MONO_TABLE_MODULEREF];
570 image->modules = g_new0 (MonoImage *, t->rows);
571 image->modules_loaded = g_new0 (gboolean, t->rows);
572 image->module_count = t->rows;
573 }
574
575 /**
576 * mono_image_load_module:
577 *
578 * Load the module with the one-based index IDX from IMAGE and return it. Return NULL if
579 * it cannot be loaded.
580 */
581 MonoImage*
582 mono_image_load_module (MonoImage *image, int idx)
583 {
584 MonoTableInfo *t;
585 MonoTableInfo *file_table;
586 int i;
587 char *base_dir;
588 gboolean refonly = image->ref_only;
589 GList *list_iter, *valid_modules = NULL;
590 MonoImageOpenStatus status;
591
592 if ((image->module_count == 0) || (idx > image->module_count || idx <= 0))
593 return NULL;
594 if (image->modules_loaded [idx - 1])
595 return image->modules [idx - 1];
596
597 file_table = &image->tables [MONO_TABLE_FILE];
598 for (i = 0; i < file_table->rows; i++) {
599 guint32 cols [MONO_FILE_SIZE];
600 mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
601 if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
602 continue;
603 valid_modules = g_list_prepend (valid_modules, (char*)mono_metadata_string_heap (image, cols [MONO_FILE_NAME]));
604 }
605
606 t = &image->tables [MONO_TABLE_MODULEREF];
607 base_dir = g_path_get_dirname (image->name);
608
609 {
610 char *module_ref;
611 const char *name;
612 guint32 cols [MONO_MODULEREF_SIZE];
613 /* if there is no file table, we try to load the module... */
614 int valid = file_table->rows == 0;
615
616 mono_metadata_decode_row (t, idx - 1, cols, MONO_MODULEREF_SIZE);
617 name = mono_metadata_string_heap (image, cols [MONO_MODULEREF_NAME]);
618 for (list_iter = valid_modules; list_iter; list_iter = list_iter->next) {
619 /* be safe with string dups, but we could just compare string indexes */
620 if (strcmp (list_iter->data, name) == 0) {
621 valid = TRUE;
622 break;
623 }
624 }
625 if (valid) {
626 module_ref = g_build_filename (base_dir, name, NULL);
627 image->modules [idx - 1] = mono_image_open_full (module_ref, &status, refonly);
628 if (image->modules [idx - 1]) {
629 mono_image_addref (image->modules [idx - 1]);
630 image->modules [idx - 1]->assembly = image->assembly;
631 #ifdef HOST_WIN32
632 if (image->modules [idx - 1]->is_module_handle)
633 mono_image_fixup_vtable (image->modules [idx - 1]);
634 #endif
635 /* g_print ("loaded module %s from %s (%p)\n", module_ref, image->name, image->assembly); */
636 }
637 g_free (module_ref);
638 }
639 }
640
641 image->modules_loaded [idx - 1] = TRUE;
642
643 g_free (base_dir);
644 g_list_free (valid_modules);
645
646 return image->modules [idx - 1];
647 }
648
649 static gpointer
650 class_key_extract (gpointer value)
651 {
652 MonoClass *class = value;
653
654 return GUINT_TO_POINTER (class->type_token);
655 }
656
657 static gpointer*
658 class_next_value (gpointer value)
659 {
660 MonoClass *class = value;
661
662 return (gpointer*)&class->next_class_cache;
663 }
664
665 void
666 mono_image_init (MonoImage *image)
667 {
668 image->mempool = mono_mempool_new_size (512);
669 mono_internal_hash_table_init (&image->class_cache,
670 g_direct_hash,
671 class_key_extract,
672 class_next_value);
673 image->field_cache = g_hash_table_new (NULL, NULL);
674
675 image->typespec_cache = g_hash_table_new (NULL, NULL);
676 image->memberref_signatures = g_hash_table_new (NULL, NULL);
677 image->helper_signatures = g_hash_table_new (g_str_hash, g_str_equal);
678 image->method_signatures = g_hash_table_new (NULL, NULL);
679
680 image->property_hash = mono_property_hash_new ();
681 InitializeCriticalSection (&image->lock);
682 InitializeCriticalSection (&image->szarray_cache_lock);
683 }
684
685 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
686 #define SWAP64(x) (x) = GUINT64_FROM_LE ((x))
687 #define SWAP32(x) (x) = GUINT32_FROM_LE ((x))
688 #define SWAP16(x) (x) = GUINT16_FROM_LE ((x))
689 #define SWAPPDE(x) do { (x).rva = GUINT32_FROM_LE ((x).rva); (x).size = GUINT32_FROM_LE ((x).size);} while (0)
690 #else
691 #define SWAP64(x)
692 #define SWAP32(x)
693 #define SWAP16(x)
694 #define SWAPPDE(x)
695 #endif
696
697 /*
698 * Returns < 0 to indicate an error.
699 */
700 static int
701 do_load_header (MonoImage *image, MonoDotNetHeader *header, int offset)
702 {
703 MonoDotNetHeader64 header64;
704
705 #ifdef HOST_WIN32
706 if (!image->is_module_handle)
707 #endif
708 if (offset + sizeof (MonoDotNetHeader32) > image->raw_data_len)
709 return -1;
710
711 memcpy (header, image->raw_data + offset, sizeof (MonoDotNetHeader));
712
713 if (header->pesig [0] != 'P' || header->pesig [1] != 'E')
714 return -1;
715
716 /* endian swap the fields common between PE and PE+ */
717 SWAP32 (header->coff.coff_time);
718 SWAP32 (header->coff.coff_symptr);
719 SWAP32 (header->coff.coff_symcount);
720 SWAP16 (header->coff.coff_machine);
721 SWAP16 (header->coff.coff_sections);
722 SWAP16 (header->coff.coff_opt_header_size);
723 SWAP16 (header->coff.coff_attributes);
724 /* MonoPEHeader */
725 SWAP32 (header->pe.pe_code_size);
726 SWAP32 (header->pe.pe_uninit_data_size);
727 SWAP32 (header->pe.pe_rva_entry_point);
728 SWAP32 (header->pe.pe_rva_code_base);
729 SWAP32 (header->pe.pe_rva_data_base);
730 SWAP16 (header->pe.pe_magic);
731
732 /* now we are ready for the basic tests */
733
734 if (header->pe.pe_magic == 0x10B) {
735 offset += sizeof (MonoDotNetHeader);
736 SWAP32 (header->pe.pe_data_size);
737 if (header->coff.coff_opt_header_size != (sizeof (MonoDotNetHeader) - sizeof (MonoCOFFHeader) - 4))
738 return -1;
739
740 SWAP32 (header->nt.pe_image_base); /* must be 0x400000 */
741 SWAP32 (header->nt.pe_stack_reserve);
742 SWAP32 (header->nt.pe_stack_commit);
743 SWAP32 (header->nt.pe_heap_reserve);
744 SWAP32 (header->nt.pe_heap_commit);
745 } else if (header->pe.pe_magic == 0x20B) {
746 /* PE32+ file format */
747 if (header->coff.coff_opt_header_size != (sizeof (MonoDotNetHeader64) - sizeof (MonoCOFFHeader) - 4))
748 return -1;
749 memcpy (&header64, image->raw_data + offset, sizeof (MonoDotNetHeader64));
750 offset += sizeof (MonoDotNetHeader64);
751 /* copy the fields already swapped. the last field, pe_data_size, is missing */
752 memcpy (&header64, header, sizeof (MonoDotNetHeader) - 4);
753 /* FIXME: we lose bits here, but we don't use this stuff internally, so we don't care much.
754 * will be fixed when we change MonoDotNetHeader to not match the 32 bit variant
755 */
756 SWAP64 (header64.nt.pe_image_base);
757 header->nt.pe_image_base = header64.nt.pe_image_base;
758 SWAP64 (header64.nt.pe_stack_reserve);
759 header->nt.pe_stack_reserve = header64.nt.pe_stack_reserve;
760 SWAP64 (header64.nt.pe_stack_commit);
761 header->nt.pe_stack_commit = header64.nt.pe_stack_commit;
762 SWAP64 (header64.nt.pe_heap_reserve);
763 header->nt.pe_heap_reserve = header64.nt.pe_heap_reserve;
764 SWAP64 (header64.nt.pe_heap_commit);
765 header->nt.pe_heap_commit = header64.nt.pe_heap_commit;
766
767 header->nt.pe_section_align = header64.nt.pe_section_align;
768 header->nt.pe_file_alignment = header64.nt.pe_file_alignment;
769 header->nt.pe_os_major = header64.nt.pe_os_major;
770 header->nt.pe_os_minor = header64.nt.pe_os_minor;
771 header->nt.pe_user_major = header64.nt.pe_user_major;
772 header->nt.pe_user_minor = header64.nt.pe_user_minor;
773 header->nt.pe_subsys_major = header64.nt.pe_subsys_major;
774 header->nt.pe_subsys_minor = header64.nt.pe_subsys_minor;
775 header->nt.pe_reserved_1 = header64.nt.pe_reserved_1;
776 header->nt.pe_image_size = header64.nt.pe_image_size;
777 header->nt.pe_header_size = header64.nt.pe_header_size;
778 header->nt.pe_checksum = header64.nt.pe_checksum;
779 header->nt.pe_subsys_required = header64.nt.pe_subsys_required;
780 header->nt.pe_dll_flags = header64.nt.pe_dll_flags;
781 header->nt.pe_loader_flags = header64.nt.pe_loader_flags;
782 header->nt.pe_data_dir_count = header64.nt.pe_data_dir_count;
783
784 /* copy the datadir */
785 memcpy (&header->datadir, &header64.datadir, sizeof (MonoPEDatadir));
786 } else {
787 return -1;
788 }
789
790 /* MonoPEHeaderNT: not used yet */
791 SWAP32 (header->nt.pe_section_align); /* must be 8192 */
792 SWAP32 (header->nt.pe_file_alignment); /* must be 512 or 4096 */
793 SWAP16 (header->nt.pe_os_major); /* must be 4 */
794 SWAP16 (header->nt.pe_os_minor); /* must be 0 */
795 SWAP16 (header->nt.pe_user_major);
796 SWAP16 (header->nt.pe_user_minor);
797 SWAP16 (header->nt.pe_subsys_major);
798 SWAP16 (header->nt.pe_subsys_minor);
799 SWAP32 (header->nt.pe_reserved_1);
800 SWAP32 (header->nt.pe_image_size);
801 SWAP32 (header->nt.pe_header_size);
802 SWAP32 (header->nt.pe_checksum);
803 SWAP16 (header->nt.pe_subsys_required);
804 SWAP16 (header->nt.pe_dll_flags);
805 SWAP32 (header->nt.pe_loader_flags);
806 SWAP32 (header->nt.pe_data_dir_count);
807
808 /* MonoDotNetHeader: mostly unused */
809 SWAPPDE (header->datadir.pe_export_table);
810 SWAPPDE (header->datadir.pe_import_table);
811 SWAPPDE (header->datadir.pe_resource_table);
812 SWAPPDE (header->datadir.pe_exception_table);
813 SWAPPDE (header->datadir.pe_certificate_table);
814 SWAPPDE (header->datadir.pe_reloc_table);
815 SWAPPDE (header->datadir.pe_debug);
816 SWAPPDE (header->datadir.pe_copyright);
817 SWAPPDE (header->datadir.pe_global_ptr);
818 SWAPPDE (header->datadir.pe_tls_table);
819 SWAPPDE (header->datadir.pe_load_config_table);
820 SWAPPDE (header->datadir.pe_bound_import);
821 SWAPPDE (header->datadir.pe_iat);
822 SWAPPDE (header->datadir.pe_delay_import_desc);
823 SWAPPDE (header->datadir.pe_cli_header);
824 SWAPPDE (header->datadir.pe_reserved);
825
826 #ifdef HOST_WIN32
827 if (image->is_module_handle)
828 image->raw_data_len = header->nt.pe_image_size;
829 #endif
830
831 return offset;
832 }
833
834 gboolean
835 mono_image_load_pe_data (MonoImage *image)
836 {
837 MonoCLIImageInfo *iinfo;
838 MonoDotNetHeader *header;
839 MonoMSDOSHeader msdos;
840 gint32 offset = 0;
841
842 iinfo = image->image_info;
843 header = &iinfo->cli_header;
844
845 #ifdef HOST_WIN32
846 if (!image->is_module_handle)
847 #endif
848 if (offset + sizeof (msdos) > image->raw_data_len)
849 goto invalid_image;
850 memcpy (&msdos, image->raw_data + offset, sizeof (msdos));
851
852 if (!(msdos.msdos_sig [0] == 'M' && msdos.msdos_sig [1] == 'Z'))
853 goto invalid_image;
854
855 msdos.pe_offset = GUINT32_FROM_LE (msdos.pe_offset);
856
857 offset = msdos.pe_offset;
858
859 offset = do_load_header (image, header, offset);
860 if (offset < 0)
861 goto invalid_image;
862
863 /*
864 * this tests for a x86 machine type, but itanium, amd64 and others could be used, too.
865 * we skip this test.
866 if (header->coff.coff_machine != 0x14c)
867 goto invalid_image;
868 */
869
870 #if 0
871 /*
872 * The spec says that this field should contain 6.0, but Visual Studio includes a new compiler,
873 * which produces binaries with 7.0. From Sergey:
874 *
875 * The reason is that MSVC7 uses traditional compile/link
876 * sequence for CIL executables, and VS.NET (and Framework
877 * SDK) includes linker version 7, that puts 7.0 in this
878 * field. That's why it's currently not possible to load VC
879 * binaries with Mono. This field is pretty much meaningless
880 * anyway (what linker?).
881 */
882 if (header->pe.pe_major != 6 || header->pe.pe_minor != 0)
883 goto invalid_image;
884 #endif
885
886 /*
887 * FIXME: byte swap all addresses here for header.
888 */
889
890 if (!load_section_tables (image, iinfo, offset))
891 goto invalid_image;
892
893 return TRUE;
894
895 invalid_image:
896 return FALSE;
897 }
898
899 gboolean
900 mono_image_load_cli_data (MonoImage *image)
901 {
902 MonoCLIImageInfo *iinfo;
903 MonoDotNetHeader *header;
904
905 iinfo = image->image_info;
906 header = &iinfo->cli_header;
907
908 /* Load the CLI header */
909 if (!load_cli_header (image, iinfo))
910 return FALSE;
911
912 if (!load_metadata (image, iinfo))
913 return FALSE;
914
915 return TRUE;
916 }
917
918 void
919 mono_image_load_names (MonoImage *image)
920 {
921 /* modules don't have an assembly table row */
922 if (image->tables [MONO_TABLE_ASSEMBLY].rows) {
923 image->assembly_name = mono_metadata_string_heap (image,
924 mono_metadata_decode_row_col (&image->tables [MONO_TABLE_ASSEMBLY],
925 0, MONO_ASSEMBLY_NAME));
926 }
927
928 image->module_name = mono_metadata_string_heap (image,
929 mono_metadata_decode_row_col (&image->tables [MONO_TABLE_MODULE],
930 0, MONO_MODULE_NAME));
931 }
932
933 static MonoImage *
934 do_mono_image_load (MonoImage *image, MonoImageOpenStatus *status,
935 gboolean care_about_cli, gboolean care_about_pecoff)
936 {
937 MonoCLIImageInfo *iinfo;
938 MonoDotNetHeader *header;
939 GSList *errors = NULL;
940
941 mono_profiler_module_event (image, MONO_PROFILE_START_LOAD);
942
943 mono_image_init (image);
944
945 iinfo = image->image_info;
946 header = &iinfo->cli_header;
947
948 if (status)
949 *status = MONO_IMAGE_IMAGE_INVALID;
950
951 if (care_about_pecoff == FALSE)
952 goto done;
953
954 if (!mono_verifier_verify_pe_data (image, &errors))
955 goto invalid_image;
956
957 if (!mono_image_load_pe_data (image))
958 goto invalid_image;
959
960 if (care_about_cli == FALSE) {
961 goto done;
962 }
963
964 if (!mono_verifier_verify_cli_data (image, &errors))
965 goto invalid_image;
966
967 if (!mono_image_load_cli_data (image))
968 goto invalid_image;
969
970 if (!mono_verifier_verify_table_data (image, &errors))
971 goto invalid_image;
972
973 mono_image_load_names (image);
974
975 load_modules (image);
976
977 done:
978 mono_profiler_module_loaded (image, MONO_PROFILE_OK);
979 if (status)
980 *status = MONO_IMAGE_OK;
981
982 return image;
983
984 invalid_image:
985 if (errors) {
986 MonoVerifyInfo *info = errors->data;
987 g_warning ("Could not load image %s due to %s", image->name, info->message);
988 mono_free_verify_list (errors);
989 }
990 mono_profiler_module_loaded (image, MONO_PROFILE_FAILED);
991 mono_image_close (image);
992 return NULL;
993 }
994
995 static MonoImage *
996 do_mono_image_open (const char *fname, MonoImageOpenStatus *status,
997 gboolean care_about_cli, gboolean care_about_pecoff, gboolean refonly)
998 {
999 MonoCLIImageInfo *iinfo;
1000 MonoImage *image;
1001 MonoFileMap *filed;
1002
1003 if ((filed = mono_file_map_open (fname)) == NULL){
1004 if (IS_PORTABILITY_SET) {
1005 gchar *ffname = mono_portability_find_file (fname, TRUE);
1006 if (ffname) {
1007 filed = mono_file_map_open (ffname);
1008 g_free (ffname);
1009 }
1010 }
1011
1012 if (filed == NULL) {
1013 if (status)
1014 *status = MONO_IMAGE_ERROR_ERRNO;
1015 return NULL;
1016 }
1017 }
1018
1019 image = g_new0 (MonoImage, 1);
1020 image->raw_buffer_used = TRUE;
1021 image->raw_data_len = mono_file_map_size (filed);
1022 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);
1023 #if defined(HAVE_MMAP) && !defined (HOST_WIN32)
1024 if (!image->raw_data) {
1025 image->fileio_used = TRUE;
1026 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);
1027 }
1028 #endif
1029 if (!image->raw_data) {
1030 mono_file_map_close (filed);
1031 g_free (image);
1032 if (status)
1033 *status = MONO_IMAGE_IMAGE_INVALID;
1034 return NULL;
1035 }
1036 iinfo = g_new0 (MonoCLIImageInfo, 1);
1037 image->image_info = iinfo;
1038 image->name = mono_path_resolve_symlinks (fname);
1039 image->ref_only = refonly;
1040 image->ref_count = 1;
1041 /* if MONO_SECURITY_MODE_CORE_CLR is set then determine if this image is platform code */
1042 image->core_clr_platform_code = mono_security_core_clr_determine_platform_image (image);
1043
1044 mono_file_map_close (filed);
1045 return do_mono_image_load (image, status, care_about_cli, care_about_pecoff);
1046 }
1047
1048 MonoImage *
1049 mono_image_loaded_full (const char *name, gboolean refonly)
1050 {
1051 MonoImage *res;
1052 GHashTable *loaded_images = refonly ? loaded_images_refonly_hash : loaded_images_hash;
1053
1054 mono_images_lock ();
1055 res = g_hash_table_lookup (loaded_images, name);
1056 mono_images_unlock ();
1057 return res;
1058 }
1059
1060 /**
1061 * mono_image_loaded:
1062 * @name: name of the image to load
1063 *
1064 * This routine ensures that the given image is loaded.
1065 *
1066 * Returns: the loaded MonoImage, or NULL on failure.
1067 */
1068 MonoImage *
1069 mono_image_loaded (const char *name)
1070 {
1071 return mono_image_loaded_full (name, FALSE);
1072 }
1073
1074 typedef struct {
1075 MonoImage *res;
1076 const char* guid;
1077 } GuidData;
1078
1079 static void
1080 find_by_guid (gpointer key, gpointer val, gpointer user_data)
1081 {
1082 GuidData *data = user_data;
1083 MonoImage *image;
1084
1085 if (data->res)
1086 return;
1087 image = val;
1088 if (strcmp (data->guid, mono_image_get_guid (image)) == 0)
1089 data->res = image;
1090 }
1091
1092 MonoImage *
1093 mono_image_loaded_by_guid_full (const char *guid, gboolean refonly)
1094 {
1095 GuidData data;
1096 GHashTable *loaded_images = refonly ? loaded_images_refonly_hash : loaded_images_hash;
1097 data.res = NULL;
1098 data.guid = guid;
1099
1100 mono_images_lock ();
1101 g_hash_table_foreach (loaded_images, find_by_guid, &data);
1102 mono_images_unlock ();
1103 return data.res;
1104 }
1105
1106 MonoImage *
1107 mono_image_loaded_by_guid (const char *guid)
1108 {
1109 return mono_image_loaded_by_guid_full (guid, FALSE);
1110 }
1111
1112 static MonoImage *
1113 register_image (MonoImage *image)
1114 {
1115 MonoImage *image2;
1116 GHashTable *loaded_images = image->ref_only ? loaded_images_refonly_hash : loaded_images_hash;
1117
1118 mono_images_lock ();
1119 image2 = g_hash_table_lookup (loaded_images, image->name);
1120
1121 if (image2) {
1122 /* Somebody else beat us to it */
1123 mono_image_addref (image2);
1124 mono_images_unlock ();
1125 mono_image_close (image);
1126 return image2;
1127 }
1128 g_hash_table_insert (loaded_images, image->name, image);
1129 if (image->assembly_name && (g_hash_table_lookup (loaded_images, image->assembly_name) == NULL))
1130 g_hash_table_insert (loaded_images, (char *) image->assembly_name, image);
1131 mono_images_unlock ();
1132
1133 return image;
1134 }
1135
1136 MonoImage *
1137 mono_image_open_from_data_with_name (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status, gboolean refonly, const char *name)
1138 {
1139 MonoCLIImageInfo *iinfo;
1140 MonoImage *image;
1141 char *datac;
1142
1143 if (!data || !data_len) {
1144 if (status)
1145 *status = MONO_IMAGE_IMAGE_INVALID;
1146 return NULL;
1147 }
1148 datac = data;
1149 if (need_copy) {
1150 datac = g_try_malloc (data_len);
1151 if (!datac) {
1152 if (status)
1153 *status = MONO_IMAGE_ERROR_ERRNO;
1154 return NULL;
1155 }
1156 memcpy (datac, data, data_len);
1157 }
1158
1159 image = g_new0 (MonoImage, 1);
1160 image->raw_data = datac;
1161 image->raw_data_len = data_len;
1162 image->raw_data_allocated = need_copy;
1163 image->name = (name == NULL) ? g_strdup_printf ("data-%p", datac) : g_strdup(name);
1164 iinfo = g_new0 (MonoCLIImageInfo, 1);
1165 image->image_info = iinfo;
1166 image->ref_only = refonly;
1167
1168 image = do_mono_image_load (image, status, TRUE, TRUE);
1169 if (image == NULL)
1170 return NULL;
1171
1172 return register_image (image);
1173 }
1174
1175 MonoImage *
1176 mono_image_open_from_data_full (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status, gboolean refonly)
1177 {
1178 return mono_image_open_from_data_with_name (data, data_len, need_copy, status, refonly, NULL);
1179 }
1180
1181 MonoImage *
1182 mono_image_open_from_data (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status)
1183 {
1184 return mono_image_open_from_data_full (data, data_len, need_copy, status, FALSE);
1185 }
1186
1187 #ifdef HOST_WIN32
1188 /* fname is not duplicated. */
1189 MonoImage*
1190 mono_image_open_from_module_handle (HMODULE module_handle, char* fname, gboolean has_entry_point, MonoImageOpenStatus* status)
1191 {
1192 MonoImage* image;
1193 MonoCLIImageInfo* iinfo;
1194
1195 image = g_new0 (MonoImage, 1);
1196 image->raw_data = (char*) module_handle;
1197 image->is_module_handle = TRUE;
1198 iinfo = g_new0 (MonoCLIImageInfo, 1);
1199 image->image_info = iinfo;
1200 image->name = fname;
1201 image->ref_count = has_entry_point ? 0 : 1;
1202 image->has_entry_point = has_entry_point;
1203
1204 image = do_mono_image_load (image, status, TRUE, TRUE);
1205 if (image == NULL)
1206 return NULL;
1207
1208 return register_image (image);
1209 }
1210 #endif
1211
1212 MonoImage *
1213 mono_image_open_full (const char *fname, MonoImageOpenStatus *status, gboolean refonly)
1214 {
1215 MonoImage *image;
1216 GHashTable *loaded_images;
1217 char *absfname;
1218
1219 g_return_val_if_fail (fname != NULL, NULL);
1220
1221 #ifdef HOST_WIN32
1222 /* Load modules using LoadLibrary. */
1223 if (!refonly && coree_module_handle) {
1224 HMODULE module_handle;
1225 guint16 *fname_utf16;
1226 DWORD last_error;
1227
1228 absfname = mono_path_resolve_symlinks (fname);
1229 fname_utf16 = NULL;
1230
1231 /* There is little overhead because the OS loader lock is held by LoadLibrary. */
1232 mono_images_lock ();
1233 image = g_hash_table_lookup (loaded_images_hash, absfname);
1234 if (image) {
1235 g_assert (image->is_module_handle);
1236 if (image->has_entry_point && image->ref_count == 0) {
1237 /* Increment reference count on images loaded outside of the runtime. */
1238 fname_utf16 = g_utf8_to_utf16 (absfname, -1, NULL, NULL, NULL);
1239 /* The image is already loaded because _CorDllMain removes images from the hash. */
1240 module_handle = LoadLibrary (fname_utf16);
1241 g_assert (module_handle == (HMODULE) image->raw_data);
1242 }
1243 mono_image_addref (image);
1244 mono_images_unlock ();
1245 if (fname_utf16)
1246 g_free (fname_utf16);
1247 g_free (absfname);
1248 return image;
1249 }
1250
1251 fname_utf16 = g_utf8_to_utf16 (absfname, -1, NULL, NULL, NULL);
1252 module_handle = MonoLoadImage (fname_utf16);
1253 if (status && module_handle == NULL)
1254 last_error = GetLastError ();
1255
1256 /* mono_image_open_from_module_handle is called by _CorDllMain. */
1257 image = g_hash_table_lookup (loaded_images_hash, absfname);
1258 if (image)
1259 mono_image_addref (image);
1260 mono_images_unlock ();
1261
1262 g_free (fname_utf16);
1263
1264 if (module_handle == NULL) {
1265 g_assert (!image);
1266 g_free (absfname);
1267 if (status) {
1268 if (last_error == ERROR_BAD_EXE_FORMAT || last_error == STATUS_INVALID_IMAGE_FORMAT)
1269 *status = MONO_IMAGE_IMAGE_INVALID;
1270 else {
1271 if (last_error == ERROR_FILE_NOT_FOUND || last_error == ERROR_PATH_NOT_FOUND)
1272 errno = ENOENT;
1273 else
1274 errno = 0;
1275 }
1276 }
1277 return NULL;
1278 }
1279
1280 if (image) {
1281 g_assert (image->is_module_handle);
1282 g_assert (image->has_entry_point);
1283 g_free (absfname);
1284 return image;
1285 }
1286
1287 return mono_image_open_from_module_handle (module_handle, absfname, FALSE, status);
1288 }
1289 #endif
1290
1291 absfname = mono_path_canonicalize (fname);
1292
1293 /*
1294 * The easiest solution would be to do all the loading inside the mutex,
1295 * but that would lead to scalability problems. So we let the loading
1296 * happen outside the mutex, and if multiple threads happen to load
1297 * the same image, we discard all but the first copy.
1298 */
1299 mono_images_lock ();
1300 loaded_images = refonly ? loaded_images_refonly_hash : loaded_images_hash;
1301 image = g_hash_table_lookup (loaded_images, absfname);
1302 g_free (absfname);
1303
1304 if (image){
1305 mono_image_addref (image);
1306 mono_images_unlock ();
1307 return image;
1308 }
1309 mono_images_unlock ();
1310
1311 image = do_mono_image_open (fname, status, TRUE, TRUE, refonly);
1312 if (image == NULL)
1313 return NULL;
1314
1315 return register_image (image);
1316 }
1317
1318 /**
1319 * mono_image_open:
1320 * @fname: filename that points to the module we want to open
1321 * @status: An error condition is returned in this field
1322 *
1323 * Returns: An open image of type %MonoImage or NULL on error.
1324 * The caller holds a temporary reference to the returned image which should be cleared
1325 * when no longer needed by calling mono_image_close ().
1326 * if NULL, then check the value of @status for details on the error
1327 */
1328 MonoImage *
1329 mono_image_open (const char *fname, MonoImageOpenStatus *status)
1330 {
1331 return mono_image_open_full (fname, status, FALSE);
1332 }
1333
1334 /**
1335 * mono_pe_file_open:
1336 * @fname: filename that points to the module we want to open
1337 * @status: An error condition is returned in this field
1338 *
1339 * Returns: An open image of type %MonoImage or NULL on error. if
1340 * NULL, then check the value of @status for details on the error.
1341 * This variant for mono_image_open DOES NOT SET UP CLI METADATA.
1342 * It's just a PE file loader, used for FileVersionInfo. It also does
1343 * not use the image cache.
1344 */
1345 MonoImage *
1346 mono_pe_file_open (const char *fname, MonoImageOpenStatus *status)
1347 {
1348 g_return_val_if_fail (fname != NULL, NULL);
1349
1350 return(do_mono_image_open (fname, status, FALSE, TRUE, FALSE));
1351 }
1352
1353 /**
1354 * mono_image_open_raw
1355 * @fname: filename that points to the module we want to open
1356 * @status: An error condition is returned in this field
1357 *
1358 * Returns an image without loading neither pe or cli data.
1359 *
1360 * Use mono_image_load_pe_data and mono_image_load_cli_data to load them.
1361 */
1362 MonoImage *
1363 mono_image_open_raw (const char *fname, MonoImageOpenStatus *status)
1364 {
1365 g_return_val_if_fail (fname != NULL, NULL);
1366
1367 return(do_mono_image_open (fname, status, FALSE, FALSE, FALSE));
1368 }
1369
1370 void
1371 mono_image_fixup_vtable (MonoImage *image)
1372 {
1373 #ifdef HOST_WIN32
1374 MonoCLIImageInfo *iinfo;
1375 MonoPEDirEntry *de;
1376 MonoVTableFixup *vtfixup;
1377 int count;
1378 gpointer slot;
1379 guint16 slot_type;
1380 int slot_count;
1381
1382 g_assert (image->is_module_handle);
1383
1384 iinfo = image->image_info;
1385 de = &iinfo->cli_cli_header.ch_vtable_fixups;
1386 if (!de->rva || !de->size)
1387 return;
1388 vtfixup = (MonoVTableFixup*) mono_image_rva_map (image, de->rva);
1389 if (!vtfixup)
1390 return;
1391
1392 count = de->size / sizeof (MonoVTableFixup);
1393 while (count--) {
1394 if (!vtfixup->rva || !vtfixup->count)
1395 continue;
1396
1397 slot = mono_image_rva_map (image, vtfixup->rva);
1398 g_assert (slot);
1399 slot_type = vtfixup->type;
1400 slot_count = vtfixup->count;
1401 if (slot_type & VTFIXUP_TYPE_32BIT)
1402 while (slot_count--) {
1403 *((guint32*) slot) = (guint32) mono_marshal_get_vtfixup_ftnptr (image, *((guint32*) slot), slot_type);
1404 slot = ((guint32*) slot) + 1;
1405 }
1406 else if (slot_type & VTFIXUP_TYPE_64BIT)
1407 while (slot_count--) {
1408 *((guint64*) slot) = (guint64) mono_marshal_get_vtfixup_ftnptr (image, *((guint64*) slot), slot_type);
1409 slot = ((guint32*) slot) + 1;
1410 }
1411 else
1412 g_assert_not_reached();
1413
1414 vtfixup++;
1415 }
1416 #else
1417 g_assert_not_reached();
1418 #endif
1419 }
1420
1421 static void
1422 free_hash_table (gpointer key, gpointer val, gpointer user_data)
1423 {
1424 g_hash_table_destroy ((GHashTable*)val);
1425 }
1426
1427 /*
1428 static void
1429 free_mr_signatures (gpointer key, gpointer val, gpointer user_data)
1430 {
1431 mono_metadata_free_method_signature ((MonoMethodSignature*)val);
1432 }
1433 */
1434
1435 static void
1436 free_array_cache_entry (gpointer key, gpointer val, gpointer user_data)
1437 {
1438 g_slist_free ((GSList*)val);
1439 }
1440
1441 /**
1442 * mono_image_addref:
1443 * @image: The image file we wish to add a reference to
1444 *
1445 * Increases the reference count of an image.
1446 */
1447 void
1448 mono_image_addref (MonoImage *image)
1449 {
1450 InterlockedIncrement (&image->ref_count);
1451 }
1452
1453 void
1454 mono_dynamic_stream_reset (MonoDynamicStream* stream)
1455 {
1456 stream->alloc_size = stream->index = stream->offset = 0;
1457 g_free (stream->data);
1458 stream->data = NULL;
1459 if (stream->hash) {
1460 g_hash_table_destroy (stream->hash);
1461 stream->hash = NULL;
1462 }
1463 }
1464
1465 static inline void
1466 free_hash (GHashTable *hash)
1467 {
1468 if (hash)
1469 g_hash_table_destroy (hash);
1470 }
1471
1472 /*
1473 * Returns whether mono_image_close_finish() must be called as well.
1474 * We must unload images in two steps because clearing the domain in
1475 * SGen requires the class metadata to be intact, but we need to free
1476 * the mono_g_hash_tables in case a collection occurs during domain
1477 * unloading and the roots would trip up the GC.
1478 */
1479 gboolean
1480 mono_image_close_except_pools (MonoImage *image)
1481 {
1482 MonoImage *image2;
1483 GHashTable *loaded_images;
1484 int i;
1485 GSList *free_list;
1486
1487 g_return_val_if_fail (image != NULL, FALSE);
1488
1489 /*
1490 * Atomically decrement the refcount and remove ourselves from the hash tables, so
1491 * register_image () can't grab an image which is being closed.
1492 */
1493 mono_images_lock ();
1494
1495 if (InterlockedDecrement (&image->ref_count) > 0) {
1496 mono_images_unlock ();
1497 return FALSE;
1498 }
1499
1500 loaded_images = image->ref_only ? loaded_images_refonly_hash : loaded_images_hash;
1501 image2 = g_hash_table_lookup (loaded_images, image->name);
1502 if (image == image2) {
1503 /* This is not true if we are called from mono_image_open () */
1504 g_hash_table_remove (loaded_images, image->name);
1505 }
1506 if (image->assembly_name && (g_hash_table_lookup (loaded_images, image->assembly_name) == image))
1507 g_hash_table_remove (loaded_images, (char *) image->assembly_name);
1508
1509 mono_images_unlock ();
1510
1511 #ifdef HOST_WIN32
1512 if (image->is_module_handle && image->has_entry_point) {
1513 mono_images_lock ();
1514 if (image->ref_count == 0) {
1515 /* Image will be closed by _CorDllMain. */
1516 FreeLibrary ((HMODULE) image->raw_data);
1517 mono_images_unlock ();
1518 return FALSE;
1519 }
1520 mono_images_unlock ();
1521 }
1522 #endif
1523
1524 mono_profiler_module_event (image, MONO_PROFILE_START_UNLOAD);
1525
1526 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Unloading image %s [%p].", image->name, image);
1527
1528 mono_image_invoke_unload_hook (image);
1529
1530 free_list = mono_metadata_clean_for_image (image);
1531
1532 /*
1533 * The caches inside a MonoImage might refer to metadata which is stored in referenced
1534 * assemblies, so we can't release these references in mono_assembly_close () since the
1535 * MonoImage might outlive its associated MonoAssembly.
1536 */
1537 if (image->references && !image->dynamic) {
1538 MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLYREF];
1539 int i;
1540
1541 for (i = 0; i < t->rows; i++) {
1542 if (image->references [i] && image->references [i] != REFERENCE_MISSING) {
1543 if (!mono_assembly_close_except_image_pools (image->references [i]))
1544 image->references [i] = NULL;
1545 }
1546 }
1547 } else {
1548 if (image->references) {
1549 g_free (image->references);
1550 image->references = NULL;
1551 }
1552 }
1553
1554 #ifdef HOST_WIN32
1555 mono_images_lock ();
1556 if (image->is_module_handle && !image->has_entry_point)
1557 FreeLibrary ((HMODULE) image->raw_data);
1558 mono_images_unlock ();
1559 #endif
1560
1561 if (image->raw_buffer_used) {
1562 if (image->raw_data != NULL) {
1563 #ifndef HOST_WIN32
1564 if (image->fileio_used)
1565 mono_file_unmap_fileio (image->raw_data, image->raw_data_handle);
1566 else
1567 #endif
1568 mono_file_unmap (image->raw_data, image->raw_data_handle);
1569 }
1570 }
1571
1572 if (image->raw_data_allocated) {
1573 /* FIXME: do we need this? (image is disposed anyway) */
1574 /* image->raw_metadata and cli_sections might lie inside image->raw_data */
1575 MonoCLIImageInfo *ii = image->image_info;
1576
1577 if ((image->raw_metadata > image->raw_data) &&
1578 (image->raw_metadata <= (image->raw_data + image->raw_data_len)))
1579 image->raw_metadata = NULL;
1580
1581 for (i = 0; i < ii->cli_section_count; i++)
1582 if (((char*)(ii->cli_sections [i]) > image->raw_data) &&
1583 ((char*)(ii->cli_sections [i]) <= ((char*)image->raw_data + image->raw_data_len)))
1584 ii->cli_sections [i] = NULL;
1585
1586 g_free (image->raw_data);
1587 }
1588
1589 if (debug_assembly_unload) {
1590 image->name = g_strdup_printf ("%s - UNLOADED", image->name);
1591 } else {
1592 g_free (image->name);
1593 g_free (image->guid);
1594 g_free (image->version);
1595 g_free (image->files);
1596 }
1597
1598 if (image->method_cache)
1599 g_hash_table_destroy (image->method_cache);
1600 if (image->methodref_cache)
1601 g_hash_table_destroy (image->methodref_cache);
1602 mono_internal_hash_table_destroy (&image->class_cache);
1603 g_hash_table_destroy (image->field_cache);
1604 if (image->array_cache) {
1605 g_hash_table_foreach (image->array_cache, free_array_cache_entry, NULL);
1606 g_hash_table_destroy (image->array_cache);
1607 }
1608 if (image->szarray_cache)
1609 g_hash_table_destroy (image->szarray_cache);
1610 if (image->ptr_cache)
1611 g_hash_table_destroy (image->ptr_cache);
1612 if (image->name_cache) {
1613 g_hash_table_foreach (image->name_cache, free_hash_table, NULL);
1614 g_hash_table_destroy (image->name_cache);
1615 }
1616
1617 free_hash (image->native_wrapper_cache);
1618 free_hash (image->managed_wrapper_cache);
1619 free_hash (image->delegate_begin_invoke_cache);
1620 free_hash (image->delegate_end_invoke_cache);
1621 free_hash (image->delegate_invoke_cache);
1622 free_hash (image->delegate_abstract_invoke_cache);
1623 free_hash (image->delegate_bound_static_invoke_cache);
1624 free_hash (image->remoting_invoke_cache);
1625 free_hash (image->runtime_invoke_cache);
1626 free_hash (image->runtime_invoke_direct_cache);
1627 free_hash (image->runtime_invoke_vcall_cache);
1628 free_hash (image->synchronized_cache);
1629 free_hash (image->unbox_wrapper_cache);
1630 free_hash (image->cominterop_invoke_cache);
1631 free_hash (image->cominterop_wrapper_cache);
1632 free_hash (image->typespec_cache);
1633 free_hash (image->ldfld_wrapper_cache);
1634 free_hash (image->ldflda_wrapper_cache);
1635 free_hash (image->stfld_wrapper_cache);
1636 free_hash (image->isinst_cache);
1637 free_hash (image->castclass_cache);
1638 free_hash (image->proxy_isinst_cache);
1639 free_hash (image->thunk_invoke_cache);
1640 free_hash (image->var_cache_slow);
1641 free_hash (image->mvar_cache_slow);
1642 free_hash (image->wrapper_param_names);
1643 free_hash (image->native_wrapper_aot_cache);
1644 free_hash (image->pinvoke_scopes);
1645 free_hash (image->pinvoke_scope_filenames);
1646
1647 /* The ownership of signatures is not well defined */
1648 //g_hash_table_foreach (image->memberref_signatures, free_mr_signatures, NULL);
1649 g_hash_table_destroy (image->memberref_signatures);
1650 //g_hash_table_foreach (image->helper_signatures, free_mr_signatures, NULL);
1651 g_hash_table_destroy (image->helper_signatures);
1652 g_hash_table_destroy (image->method_signatures);
1653
1654 if (image->rgctx_template_hash)
1655 g_hash_table_destroy (image->rgctx_template_hash);
1656
1657 if (image->property_hash)
1658 mono_property_hash_destroy (image->property_hash);
1659
1660 g_slist_free (image->reflection_info_unregister_classes);
1661 image->reflection_info_unregister_classes = free_list;
1662
1663 if (image->interface_bitset) {
1664 mono_unload_interface_ids (image->interface_bitset);
1665 mono_bitset_free (image->interface_bitset);
1666 }
1667 if (image->image_info){
1668 MonoCLIImageInfo *ii = image->image_info;
1669
1670 if (ii->cli_section_tables)
1671 g_free (ii->cli_section_tables);
1672 if (ii->cli_sections)
1673 g_free (ii->cli_sections);
1674 g_free (image->image_info);
1675 }
1676
1677 for (i = 0; i < image->module_count; ++i) {
1678 if (image->modules [i]) {
1679 if (!mono_image_close_except_pools (image->modules [i]))
1680 image->modules [i] = NULL;
1681 }
1682 }
1683 if (image->modules_loaded)
1684 g_free (image->modules_loaded);
1685
1686 DeleteCriticalSection (&image->szarray_cache_lock);
1687 DeleteCriticalSection (&image->lock);
1688
1689 /*g_print ("destroy image %p (dynamic: %d)\n", image, image->dynamic);*/
1690 if (image->dynamic) {
1691 /* Dynamic images are GC_MALLOCed */
1692 g_free ((char*)image->module_name);
1693 mono_dynamic_image_free ((MonoDynamicImage*)image);
1694 }
1695
1696 mono_profiler_module_event (image, MONO_PROFILE_END_UNLOAD);
1697
1698 return TRUE;
1699 }
1700
1701 void
1702 mono_image_close_finish (MonoImage *image)
1703 {
1704 int i;
1705 GSList *l;
1706
1707 for (l = image->reflection_info_unregister_classes; l; l = l->next)
1708 g_free (l->data);
1709 g_slist_free (image->reflection_info_unregister_classes);
1710 image->reflection_info_unregister_classes = NULL;
1711
1712 if (image->references && !image->dynamic) {
1713 MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLYREF];
1714 int i;
1715
1716 for (i = 0; i < t->rows; i++) {
1717 if (image->references [i] && image->references [i] != REFERENCE_MISSING)
1718 mono_assembly_close_finish (image->references [i]);
1719 }
1720
1721 g_free (image->references);
1722 image->references = NULL;
1723 }
1724
1725 for (i = 0; i < image->module_count; ++i) {
1726 if (image->modules [i])
1727 mono_image_close_finish (image->modules [i]);
1728 }
1729 if (image->modules)
1730 g_free (image->modules);
1731
1732 #ifndef DISABLE_PERFCOUNTERS
1733 mono_perfcounters->loader_bytes -= mono_mempool_get_allocated (image->mempool);
1734 #endif
1735
1736 if (!image->dynamic) {
1737 if (debug_assembly_unload)
1738 mono_mempool_invalidate (image->mempool);
1739 else {
1740 mono_mempool_destroy (image->mempool);
1741 g_free (image);
1742 }
1743 } else {
1744 if (debug_assembly_unload)
1745 mono_mempool_invalidate (image->mempool);
1746 else
1747 mono_mempool_destroy (image->mempool);
1748 }
1749 }
1750
1751 /**
1752 * mono_image_close:
1753 * @image: The image file we wish to close
1754 *
1755 * Closes an image file, deallocates all memory consumed and
1756 * unmaps all possible sections of the file
1757 */
1758 void
1759 mono_image_close (MonoImage *image)
1760 {
1761 if (mono_image_close_except_pools (image))
1762 mono_image_close_finish (image);
1763 }
1764
1765 /**
1766 * mono_image_strerror:
1767 * @status: an code indicating the result from a recent operation
1768 *
1769 * Returns: a string describing the error
1770 */
1771 const char *
1772 mono_image_strerror (MonoImageOpenStatus status)
1773 {
1774 switch (status){
1775 case MONO_IMAGE_OK:
1776 return "success";
1777 case MONO_IMAGE_ERROR_ERRNO:
1778 return strerror (errno);
1779 case MONO_IMAGE_IMAGE_INVALID:
1780 return "File does not contain a valid CIL image";
1781 case MONO_IMAGE_MISSING_ASSEMBLYREF:
1782 return "An assembly was referenced, but could not be found";
1783 }
1784 return "Internal error";
1785 }
1786
1787 static gpointer
1788 mono_image_walk_resource_tree (MonoCLIImageInfo *info, guint32 res_id,
1789 guint32 lang_id, gunichar2 *name,
1790 MonoPEResourceDirEntry *entry,
1791 MonoPEResourceDir *root, guint32 level)
1792 {
1793 gboolean is_string, is_dir;
1794 guint32 name_offset, dir_offset;
1795
1796 /* Level 0 holds a directory entry for each type of resource
1797 * (identified by ID or name).
1798 *
1799 * Level 1 holds a directory entry for each named resource
1800 * item, and each "anonymous" item of a particular type of
1801 * resource.
1802 *
1803 * Level 2 holds a directory entry for each language pointing to
1804 * the actual data.
1805 */
1806 is_string = MONO_PE_RES_DIR_ENTRY_NAME_IS_STRING (*entry);
1807 name_offset = MONO_PE_RES_DIR_ENTRY_NAME_OFFSET (*entry);
1808
1809 is_dir = MONO_PE_RES_DIR_ENTRY_IS_DIR (*entry);
1810 dir_offset = MONO_PE_RES_DIR_ENTRY_DIR_OFFSET (*entry);
1811
1812 if(level==0) {
1813 if (is_string)
1814 return NULL;
1815 } else if (level==1) {
1816 if (res_id != name_offset)
1817 return NULL;
1818 #if 0
1819 if(name!=NULL &&
1820 is_string==TRUE && name!=lookup (name_offset)) {
1821 return(NULL);
1822 }
1823 #endif
1824 } else if (level==2) {
1825 if (is_string == TRUE || (is_string == FALSE && lang_id != 0 && name_offset != lang_id))
1826 return NULL;
1827 } else {
1828 g_assert_not_reached ();
1829 }
1830
1831 if(is_dir==TRUE) {
1832 MonoPEResourceDir *res_dir=(MonoPEResourceDir *)(((char *)root)+dir_offset);
1833 MonoPEResourceDirEntry *sub_entries=(MonoPEResourceDirEntry *)(res_dir+1);
1834 guint32 entries, i;
1835
1836 entries = GUINT16_FROM_LE (res_dir->res_named_entries) + GUINT16_FROM_LE (res_dir->res_id_entries);
1837
1838 for(i=0; i<entries; i++) {
1839 MonoPEResourceDirEntry *sub_entry=&sub_entries[i];
1840 gpointer ret;
1841
1842 ret=mono_image_walk_resource_tree (info, res_id,
1843 lang_id, name,
1844 sub_entry, root,
1845 level+1);
1846 if(ret!=NULL) {
1847 return(ret);
1848 }
1849 }
1850
1851 return(NULL);
1852 } else {
1853 MonoPEResourceDataEntry *data_entry=(MonoPEResourceDataEntry *)((char *)(root)+dir_offset);
1854 MonoPEResourceDataEntry *res;
1855
1856 res = g_new0 (MonoPEResourceDataEntry, 1);
1857
1858 res->rde_data_offset = GUINT32_TO_LE (data_entry->rde_data_offset);
1859 res->rde_size = GUINT32_TO_LE (data_entry->rde_size);
1860 res->rde_codepage = GUINT32_TO_LE (data_entry->rde_codepage);
1861 res->rde_reserved = GUINT32_TO_LE (data_entry->rde_reserved);
1862
1863 return (res);
1864 }
1865 }
1866
1867 /**
1868 * mono_image_lookup_resource:
1869 * @image: the image to look up the resource in
1870 * @res_id: A MONO_PE_RESOURCE_ID_ that represents the resource ID to lookup.
1871 * @lang_id: The language id.
1872 * @name: the resource name to lookup.
1873 *
1874 * Returns: NULL if not found, otherwise a pointer to the in-memory representation
1875 * of the given resource. The caller should free it using g_free () when no longer
1876 * needed.
1877 */
1878 gpointer
1879 mono_image_lookup_resource (MonoImage *image, guint32 res_id, guint32 lang_id, gunichar2 *name)
1880 {
1881 MonoCLIImageInfo *info;
1882 MonoDotNetHeader *header;
1883 MonoPEDatadir *datadir;
1884 MonoPEDirEntry *rsrc;
1885 MonoPEResourceDir *resource_dir;
1886 MonoPEResourceDirEntry *res_entries;
1887 guint32 entries, i;
1888
1889 if(image==NULL) {
1890 return(NULL);
1891 }
1892
1893 mono_image_ensure_section_idx (image, MONO_SECTION_RSRC);
1894
1895 info=image->image_info;
1896 if(info==NULL) {
1897 return(NULL);
1898 }
1899
1900 header=&info->cli_header;
1901 if(header==NULL) {
1902 return(NULL);
1903 }
1904
1905 datadir=&header->datadir;
1906 if(datadir==NULL) {
1907 return(NULL);
1908 }
1909
1910 rsrc=&datadir->pe_resource_table;
1911 if(rsrc==NULL) {
1912 return(NULL);
1913 }
1914
1915 resource_dir=(MonoPEResourceDir *)mono_image_rva_map (image, rsrc->rva);
1916 if(resource_dir==NULL) {
1917 return(NULL);
1918 }
1919
1920 entries = GUINT16_FROM_LE (resource_dir->res_named_entries) + GUINT16_FROM_LE (resource_dir->res_id_entries);
1921 res_entries=(MonoPEResourceDirEntry *)(resource_dir+1);
1922
1923 for(i=0; i<entries; i++) {
1924 MonoPEResourceDirEntry *entry=&res_entries[i];
1925 gpointer ret;
1926
1927 ret=mono_image_walk_resource_tree (info, res_id, lang_id,
1928 name, entry, resource_dir,
1929 0);
1930 if(ret!=NULL) {
1931 return(ret);
1932 }
1933 }
1934
1935 return(NULL);
1936 }
1937
1938 /**
1939 * mono_image_get_entry_point:
1940 * @image: the image where the entry point will be looked up.
1941 *
1942 * Use this routine to determine the metadata token for method that
1943 * has been flagged as the entry point.
1944 *
1945 * Returns: the token for the entry point method in the image
1946 */
1947 guint32
1948 mono_image_get_entry_point (MonoImage *image)
1949 {
1950 return ((MonoCLIImageInfo*)image->image_info)->cli_cli_header.ch_entry_point;
1951 }
1952
1953 /**
1954 * mono_image_get_resource:
1955 * @image: the image where the resource will be looked up.
1956 * @offset: The offset to add to the resource
1957 * @size: a pointer to an int where the size of the resource will be stored
1958 *
1959 * This is a low-level routine that fetches a resource from the
1960 * metadata that starts at a given @offset. The @size parameter is
1961 * filled with the data field as encoded in the metadata.
1962 *
1963 * Returns: the pointer to the resource whose offset is @offset.
1964 */
1965 const char*
1966 mono_image_get_resource (MonoImage *image, guint32 offset, guint32 *size)
1967 {
1968 MonoCLIImageInfo *iinfo = image->image_info;
1969 MonoCLIHeader *ch = &iinfo->cli_cli_header;
1970 const char* data;
1971
1972 if (!ch->ch_resources.rva || offset + 4 > ch->ch_resources.size)
1973 return NULL;
1974
1975 data = mono_image_rva_map (image, ch->ch_resources.rva);
1976 if (!data)
1977 return NULL;
1978 data += offset;
1979 if (size)
1980 *size = read32 (data);
1981 data += 4;
1982 return data;
1983 }
1984
1985 MonoImage*
1986 mono_image_load_file_for_image (MonoImage *image, int fileidx)
1987 {
1988 char *base_dir, *name;
1989 MonoImage *res;
1990 MonoTableInfo *t = &image->tables [MONO_TABLE_FILE];
1991 const char *fname;
1992 guint32 fname_id;
1993
1994 if (fileidx < 1 || fileidx > t->rows)
1995 return NULL;
1996
1997 mono_loader_lock ();
1998 if (image->files && image->files [fileidx - 1]) {
1999 mono_loader_unlock ();
2000 return image->files [fileidx - 1];
2001 }
2002
2003 if (!image->files)
2004 image->files = g_new0 (MonoImage*, t->rows);
2005
2006 fname_id = mono_metadata_decode_row_col (t, fileidx - 1, MONO_FILE_NAME);
2007 fname = mono_metadata_string_heap (image, fname_id);
2008 base_dir = g_path_get_dirname (image->name);
2009 name = g_build_filename (base_dir, fname, NULL);
2010 res = mono_image_open (name, NULL);
2011 if (res) {
2012 int i;
2013 /* g_print ("loaded file %s from %s (%p)\n", name, image->name, image->assembly); */
2014 res->assembly = image->assembly;
2015 for (i = 0; i < res->module_count; ++i) {
2016 if (res->modules [i] && !res->modules [i]->assembly)
2017 res->modules [i]->assembly = image->assembly;
2018 }
2019
2020 image->files [fileidx - 1] = res;
2021 #ifdef HOST_WIN32
2022 if (res->is_module_handle)
2023 mono_image_fixup_vtable (res);
2024 #endif
2025 }
2026 mono_loader_unlock ();
2027 g_free (name);
2028 g_free (base_dir);
2029 return res;
2030 }
2031
2032 /**
2033 * mono_image_get_strong_name:
2034 * @image: a MonoImage
2035 * @size: a guint32 pointer, or NULL.
2036 *
2037 * If the image has a strong name, and @size is not NULL, the value
2038 * pointed to by size will have the size of the strong name.
2039 *
2040 * Returns: NULL if the image does not have a strong name, or a
2041 * pointer to the public key.
2042 */
2043 const char*
2044 mono_image_get_strong_name (MonoImage *image, guint32 *size)
2045 {
2046 MonoCLIImageInfo *iinfo = image->image_info;
2047 MonoPEDirEntry *de = &iinfo->cli_cli_header.ch_strong_name;
2048 const char* data;
2049
2050 if (!de->size || !de->rva)
2051 return NULL;
2052 data = mono_image_rva_map (image, de->rva);
2053 if (!data)
2054 return NULL;
2055 if (size)
2056 *size = de->size;
2057 return data;
2058 }
2059
2060 /**
2061 * mono_image_strong_name_position:
2062 * @image: a MonoImage
2063 * @size: a guint32 pointer, or NULL.
2064 *
2065 * If the image has a strong name, and @size is not NULL, the value
2066 * pointed to by size will have the size of the strong name.
2067 *
2068 * Returns: the position within the image file where the strong name
2069 * is stored.
2070 */
2071 guint32
2072 mono_image_strong_name_position (MonoImage *image, guint32 *size)
2073 {
2074 MonoCLIImageInfo *iinfo = image->image_info;
2075 MonoPEDirEntry *de = &iinfo->cli_cli_header.ch_strong_name;
2076 guint32 pos;
2077
2078 if (size)
2079 *size = de->size;
2080 if (!de->size || !de->rva)
2081 return 0;
2082 pos = mono_cli_rva_image_map (image, de->rva);
2083 return pos == INVALID_ADDRESS ? 0 : pos;
2084 }
2085
2086 /**
2087 * mono_image_get_public_key:
2088 * @image: a MonoImage
2089 * @size: a guint32 pointer, or NULL.
2090 *
2091 * This is used to obtain the public key in the @image.
2092 *
2093 * If the image has a public key, and @size is not NULL, the value
2094 * pointed to by size will have the size of the public key.
2095 *
2096 * Returns: NULL if the image does not have a public key, or a pointer
2097 * to the public key.
2098 */
2099 const char*
2100 mono_image_get_public_key (MonoImage *image, guint32 *size)
2101 {
2102 const char *pubkey;
2103 guint32 len, tok;
2104
2105 if (image->dynamic) {
2106 if (size)
2107 *size = ((MonoDynamicImage*)image)->public_key_len;
2108 return (char*)((MonoDynamicImage*)image)->public_key;
2109 }
2110 if (image->tables [MONO_TABLE_ASSEMBLY].rows != 1)
2111 return NULL;
2112 tok = mono_metadata_decode_row_col (&image->tables [MONO_TABLE_ASSEMBLY], 0, MONO_ASSEMBLY_PUBLIC_KEY);
2113 if (!tok)
2114 return NULL;
2115 pubkey = mono_metadata_blob_heap (image, tok);
2116 len = mono_metadata_decode_blob_size (pubkey, &pubkey);
2117 if (size)
2118 *size = len;
2119 return pubkey;
2120 }
2121
2122 /**
2123 * mono_image_get_name:
2124 * @name: a MonoImage
2125 *
2126 * Returns: the name of the assembly.
2127 */
2128 const char*
2129 mono_image_get_name (MonoImage *image)
2130 {
2131 return image->assembly_name;
2132 }
2133
2134 /**
2135 * mono_image_get_filename:
2136 * @image: a MonoImage
2137 *
2138 * Used to get the filename that hold the actual MonoImage
2139 *
2140 * Returns: the filename.
2141 */
2142 const char*
2143 mono_image_get_filename (MonoImage *image)
2144 {
2145 return image->name;
2146 }
2147
2148 const char*
2149 mono_image_get_guid (MonoImage *image)
2150 {
2151 return image->guid;
2152 }
2153
2154 const MonoTableInfo*
2155 mono_image_get_table_info (MonoImage *image, int table_id)
2156 {
2157 if (table_id < 0 || table_id >= MONO_TABLE_NUM)
2158 return NULL;
2159 return &image->tables [table_id];
2160 }
2161
2162 int
2163 mono_image_get_table_rows (MonoImage *image, int table_id)
2164 {
2165 if (table_id < 0 || table_id >= MONO_TABLE_NUM)
2166 return 0;
2167 return image->tables [table_id].rows;
2168 }
2169
2170 int
2171 mono_table_info_get_rows (const MonoTableInfo *table)
2172 {
2173 return table->rows;
2174 }
2175
2176 /**
2177 * mono_image_get_assembly:
2178 * @image: the MonoImage.
2179 *
2180 * Use this routine to get the assembly that owns this image.
2181 *
2182 * Returns: the assembly that holds this image.
2183 */
2184 MonoAssembly*
2185 mono_image_get_assembly (MonoImage *image)
2186 {
2187 return image->assembly;
2188 }
2189
2190 /**
2191 * mono_image_is_dynamic:
2192 * @image: the MonoImage
2193 *
2194 * Determines if the given image was created dynamically through the
2195 * System.Reflection.Emit API
2196 *
2197 * Returns: TRUE if the image was created dynamically, FALSE if not.
2198 */
2199 gboolean
2200 mono_image_is_dynamic (MonoImage *image)
2201 {
2202 return image->dynamic;
2203 }
2204
2205 /**
2206 * mono_image_has_authenticode_entry:
2207 * @image: the MonoImage
2208 *
2209 * Use this routine to determine if the image has a Authenticode
2210 * Certificate Table.
2211 *
2212 * Returns: TRUE if the image contains an authenticode entry in the PE
2213 * directory.
2214 */
2215 gboolean
2216 mono_image_has_authenticode_entry (MonoImage *image)
2217 {
2218 MonoCLIImageInfo *iinfo = image->image_info;
2219 MonoDotNetHeader *header = &iinfo->cli_header;
2220 MonoPEDirEntry *de = &header->datadir.pe_certificate_table;
2221 // the Authenticode "pre" (non ASN.1) header is 8 bytes long
2222 return ((de->rva != 0) && (de->size > 8));
2223 }
2224
2225 gpointer
2226 mono_image_alloc (MonoImage *image, guint size)
2227 {
2228 gpointer res;
2229
2230 #ifndef DISABLE_PERFCOUNTERS
2231 mono_perfcounters->loader_bytes += size;
2232 #endif
2233 mono_image_lock (image);
2234 res = mono_mempool_alloc (image->mempool, size);
2235 mono_image_unlock (image);
2236
2237 return res;
2238 }
2239
2240 gpointer
2241 mono_image_alloc0 (MonoImage *image, guint size)
2242 {
2243 gpointer res;
2244
2245 #ifndef DISABLE_PERFCOUNTERS
2246 mono_perfcounters->loader_bytes += size;
2247 #endif
2248 mono_image_lock (image);
2249 res = mono_mempool_alloc0 (image->mempool, size);
2250 mono_image_unlock (image);
2251
2252 return res;
2253 }
2254
2255 char*
2256 mono_image_strdup (MonoImage *image, const char *s)
2257 {
2258 char *res;
2259
2260 #ifndef DISABLE_PERFCOUNTERS
2261 mono_perfcounters->loader_bytes += strlen (s);
2262 #endif
2263 mono_image_lock (image);
2264 res = mono_mempool_strdup (image->mempool, s);
2265 mono_image_unlock (image);
2266
2267 return res;
2268 }
2269
2270 GList*
2271 g_list_prepend_image (MonoImage *image, GList *list, gpointer data)
2272 {
2273 GList *new_list;
2274
2275 new_list = mono_image_alloc (image, sizeof (GList));
2276 new_list->data = data;
2277 new_list->prev = list ? list->prev : NULL;
2278 new_list->next = list;
2279
2280 if (new_list->prev)
2281 new_list->prev->next = new_list;
2282 if (list)
2283 list->prev = new_list;
2284
2285 return new_list;
2286 }
2287
2288 GSList*
2289 g_slist_append_image (MonoImage *image, GSList *list, gpointer data)
2290 {
2291 GSList *new_list;
2292
2293 new_list = mono_image_alloc (image, sizeof (GSList));
2294 new_list->data = data;
2295 new_list->next = NULL;
2296
2297 return g_slist_concat (list, new_list);
2298 }
2299
2300 void
2301 mono_image_lock (MonoImage *image)
2302 {
2303 mono_locks_acquire (&image->lock, ImageDataLock);
2304 }
2305
2306 void
2307 mono_image_unlock (MonoImage *image)
2308 {
2309 mono_locks_release (&image->lock, ImageDataLock);
2310 }
2311
2312
2313 /**
2314 * mono_image_property_lookup:
2315 *
2316 * Lookup a property on @image. Used to store very rare fields of MonoClass and MonoMethod.
2317 *
2318 * LOCKING: Takes the image lock
2319 */
2320 gpointer
2321 mono_image_property_lookup (MonoImage *image, gpointer subject, guint32 property)
2322 {
2323 gpointer res;
2324
2325 mono_image_lock (image);
2326 res = mono_property_hash_lookup (image->property_hash, subject, property);
2327 mono_image_unlock (image);
2328
2329 return res;
2330 }
2331
2332 /**
2333 * mono_image_property_insert:
2334 *
2335 * Insert a new property @property with value @value on @subject in @image. Used to store very rare fields of MonoClass and MonoMethod.
2336 *
2337 * LOCKING: Takes the image lock
2338 */
2339 void
2340 mono_image_property_insert (MonoImage *image, gpointer subject, guint32 property, gpointer value)
2341 {
2342 mono_image_lock (image);
2343 mono_property_hash_insert (image->property_hash, subject, property, value);
2344 mono_image_unlock (image);
2345 }
2346
2347 /**
2348 * mono_image_property_remove:
2349 *
2350 * Remove all properties associated with @subject in @image. Used to store very rare fields of MonoClass and MonoMethod.
2351 *
2352 * LOCKING: Takes the image lock
2353 */
2354 void
2355 mono_image_property_remove (MonoImage *image, gpointer subject)
2356 {
2357 mono_image_lock (image);
2358 mono_property_hash_remove_object (image->property_hash, subject);
2359 mono_image_unlock (image);
2360 }
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