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This patch replaces the calls to g_strcasecmp with either
[mono-project.git] / mono / metadata / assembly.c
blob538767850fc4a34a731450e3944b8c5f4b0735ab
1 /*
2 * assembly.c: Routines for loading assemblies.
3 *
4 * Author:
5 * Miguel de Icaza (miguel@ximian.com)
6 *
7 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
8 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
9 */
10 #include <config.h>
11 #include <stdio.h>
12 #include <glib.h>
13 #include <errno.h>
14 #include <string.h>
15 #include <stdlib.h>
16 #include "assembly.h"
17 #include "image.h"
18 #include "object-internals.h"
19 #include <mono/metadata/loader.h>
20 #include <mono/metadata/tabledefs.h>
21 #include <mono/metadata/metadata-internals.h>
22 #include <mono/metadata/profiler-private.h>
23 #include <mono/metadata/class-internals.h>
24 #include <mono/metadata/domain-internals.h>
25 #include <mono/metadata/mono-endian.h>
26 #include <mono/metadata/mono-debug.h>
27 #include <mono/io-layer/io-layer.h>
28 #include <mono/utils/mono-uri.h>
29 #include <mono/metadata/mono-config.h>
30 #include <mono/utils/mono-digest.h>
31 #include <mono/utils/mono-logger.h>
32 #include <mono/metadata/reflection.h>
33 #include <mono/metadata/coree.h>
34
35 #ifndef PLATFORM_WIN32
36 #include <sys/types.h>
37 #include <unistd.h>
38 #include <sys/stat.h>
39 #endif
40
41 /* AssemblyVersionMap: an assembly name and the assembly version set on which it is based */
42 typedef struct {
43 const char* assembly_name;
44 guint8 version_set_index;
45 } AssemblyVersionMap;
46
47 /* the default search path is empty, the first slot is replaced with the computed value */
48 static const char*
49 default_path [] = {
50 NULL,
51 NULL
52 };
53
54 /* Contains the list of directories to be searched for assemblies (MONO_PATH) */
55 static char **assemblies_path = NULL;
56
57 /* Contains the list of directories that point to auxiliary GACs */
58 static char **extra_gac_paths = NULL;
59
60 /* The list of system assemblies what will be remapped to the running
61 * runtime version. WARNING: this list must be sorted.
62 */
63 static const AssemblyVersionMap framework_assemblies [] = {
64 {"Accessibility", 0},
65 {"Commons.Xml.Relaxng", 0},
66 {"I18N", 0},
67 {"I18N.CJK", 0},
68 {"I18N.MidEast", 0},
69 {"I18N.Other", 0},
70 {"I18N.Rare", 0},
71 {"I18N.West", 0},
72 {"Microsoft.VisualBasic", 1},
73 {"Microsoft.VisualC", 1},
74 {"Mono.Cairo", 0},
75 {"Mono.CompilerServices.SymbolWriter", 0},
76 {"Mono.Data", 0},
77 {"Mono.Data.SybaseClient", 0},
78 {"Mono.Data.Tds", 0},
79 {"Mono.Data.TdsClient", 0},
80 {"Mono.GetOptions", 0},
81 {"Mono.Http", 0},
82 {"Mono.Posix", 0},
83 {"Mono.Security", 0},
84 {"Mono.Security.Win32", 0},
85 {"Mono.Xml.Ext", 0},
86 {"Novell.Directory.Ldap", 0},
87 {"Npgsql", 0},
88 {"PEAPI", 0},
89 {"System", 0},
90 {"System.Configuration.Install", 0},
91 {"System.Data", 0},
92 {"System.Data.OracleClient", 0},
93 {"System.Data.SqlXml", 0},
94 {"System.Design", 0},
95 {"System.DirectoryServices", 0},
96 {"System.Drawing", 0},
97 {"System.Drawing.Design", 0},
98 {"System.EnterpriseServices", 0},
99 {"System.Management", 0},
100 {"System.Messaging", 0},
101 {"System.Runtime.Remoting", 0},
102 {"System.Runtime.Serialization.Formatters.Soap", 0},
103 {"System.Security", 0},
104 {"System.ServiceProcess", 0},
105 {"System.Web", 0},
106 {"System.Web.Mobile", 0},
107 {"System.Web.Services", 0},
108 {"System.Windows.Forms", 0},
109 {"System.Xml", 0},
110 {"mscorlib", 0}
111 };
112
113 /*
114 * keeps track of loaded assemblies
115 */
116 static GList *loaded_assemblies = NULL;
117 static MonoAssembly *corlib;
118
119 /* This protects loaded_assemblies and image->references */
120 #define mono_assemblies_lock() EnterCriticalSection (&assemblies_mutex)
121 #define mono_assemblies_unlock() LeaveCriticalSection (&assemblies_mutex)
122 static CRITICAL_SECTION assemblies_mutex;
123
124 /* If defined, points to the bundled assembly information */
125 const MonoBundledAssembly **bundles;
126
127 /* Loaded assembly binding info */
128 static GSList *loaded_assembly_bindings = NULL;
129
130 static MonoAssembly*
131 mono_assembly_invoke_search_hook_internal (MonoAssemblyName *aname, gboolean refonly, gboolean postload);
132 static MonoBoolean
133 mono_assembly_is_in_gac (const gchar *filanem);
134
135 static gchar*
136 encode_public_tok (const guchar *token, gint32 len)
137 {
138 const static gchar allowed [] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
139 gchar *res;
140 int i;
141
142 res = g_malloc (len * 2 + 1);
143 for (i = 0; i < len; i++) {
144 res [i * 2] = allowed [token [i] >> 4];
145 res [i * 2 + 1] = allowed [token [i] & 0xF];
146 }
147 res [len * 2] = 0;
148 return res;
149 }
150
151 /**
152 * mono_public_tokens_are_equal:
153 * @pubt1: first public key token
154 * @pubt2: second public key token
155 *
156 * Compare two public key tokens and return #TRUE is they are equal and #FALSE
157 * otherwise.
158 */
159 gboolean
160 mono_public_tokens_are_equal (const unsigned char *pubt1, const unsigned char *pubt2)
161 {
162 return memcmp (pubt1, pubt2, 16) == 0;
163 }
164
165 static void
166 check_path_env (void)
167 {
168 const char *path;
169 char **splitted, **dest;
170
171 path = g_getenv ("MONO_PATH");
172 if (!path)
173 return;
174
175 splitted = g_strsplit (path, G_SEARCHPATH_SEPARATOR_S, 1000);
176 if (assemblies_path)
177 g_strfreev (assemblies_path);
178 assemblies_path = dest = splitted;
179 while (*splitted){
180 if (**splitted)
181 *dest++ = *splitted;
182 splitted++;
183 }
184 *dest = *splitted;
185
186 if (g_getenv ("MONO_DEBUG") == NULL)
187 return;
188
189 while (*splitted) {
190 if (**splitted && !g_file_test (*splitted, G_FILE_TEST_IS_DIR))
191 g_warning ("'%s' in MONO_PATH doesn't exist or has wrong permissions.", *splitted);
192
193 splitted++;
194 }
195 }
196
197 static void
198 check_extra_gac_path_env (void) {
199 const char *path;
200 char **splitted, **dest;
201
202 path = g_getenv ("MONO_GAC_PREFIX");
203 if (!path)
204 return;
205
206 splitted = g_strsplit (path, G_SEARCHPATH_SEPARATOR_S, 1000);
207 if (extra_gac_paths)
208 g_strfreev (extra_gac_paths);
209 extra_gac_paths = dest = splitted;
210 while (*splitted){
211 if (**splitted)
212 *dest++ = *splitted;
213 splitted++;
214 }
215 *dest = *splitted;
216
217 if (g_getenv ("MONO_DEBUG") == NULL)
218 return;
219
220 while (*splitted) {
221 if (**splitted && !g_file_test (*splitted, G_FILE_TEST_IS_DIR))
222 g_warning ("'%s' in MONO_GAC_PREFIX doesn't exist or has wrong permissions.", *splitted);
223
224 splitted++;
225 }
226 }
227
228 static gboolean
229 assembly_binding_maps_name (MonoAssemblyBindingInfo *info, MonoAssemblyName *aname)
230 {
231 if (strcmp (info->name, aname->name))
232 return FALSE;
233
234 if (info->major != aname->major || info->minor != aname->minor)
235 return FALSE;
236
237 if ((info->culture != NULL) != (aname->culture != NULL))
238 return FALSE;
239
240 if (info->culture && strcmp (info->culture, aname->culture))
241 return FALSE;
242
243 if (!mono_public_tokens_are_equal (info->public_key_token, aname->public_key_token))
244 return FALSE;
245
246 return TRUE;
247 }
248
249 static void
250 mono_assembly_binding_info_free (MonoAssemblyBindingInfo *info)
251 {
252 g_free (info->name);
253 g_free (info->culture);
254 }
255
256 static void
257 get_publisher_policy_info (MonoImage *image, MonoAssemblyName *aname, MonoAssemblyBindingInfo *binding_info)
258 {
259 MonoTableInfo *t;
260 guint32 cols [MONO_MANIFEST_SIZE];
261 const gchar *filename;
262 gchar *subpath, *fullpath;
263
264 t = &image->tables [MONO_TABLE_MANIFESTRESOURCE];
265 /* MS Impl. accepts policy assemblies with more than
266 * one manifest resource, and only takes the first one */
267 if (t->rows < 1) {
268 binding_info->is_valid = FALSE;
269 return;
270 }
271
272 mono_metadata_decode_row (t, 0, cols, MONO_MANIFEST_SIZE);
273 if ((cols [MONO_MANIFEST_IMPLEMENTATION] & MONO_IMPLEMENTATION_MASK) != MONO_IMPLEMENTATION_FILE) {
274 binding_info->is_valid = FALSE;
275 return;
276 }
277
278 filename = mono_metadata_string_heap (image, cols [MONO_MANIFEST_NAME]);
279 g_assert (filename != NULL);
280
281 subpath = g_path_get_dirname (image->name);
282 fullpath = g_build_path (G_DIR_SEPARATOR_S, subpath, filename, NULL);
283 mono_config_parse_publisher_policy (fullpath, binding_info);
284 g_free (subpath);
285 g_free (fullpath);
286
287 /* Define the optional elements/attributes before checking */
288 if (!binding_info->culture)
289 binding_info->culture = g_strdup ("");
290
291 /* Check that the most important elements/attributes exist */
292 if (!binding_info->name || !binding_info->public_key_token [0] || !binding_info->has_old_version_bottom ||
293 !binding_info->has_new_version || !assembly_binding_maps_name (binding_info, aname)) {
294 mono_assembly_binding_info_free (binding_info);
295 binding_info->is_valid = FALSE;
296 return;
297 }
298
299 binding_info->is_valid = TRUE;
300 }
301
302 static int
303 compare_versions (AssemblyVersionSet *v, MonoAssemblyName *aname)
304 {
305 if (v->major > aname->major)
306 return 1;
307 else if (v->major < aname->major)
308 return -1;
309
310 if (v->minor > aname->minor)
311 return 1;
312 else if (v->minor < aname->minor)
313 return -1;
314
315 if (v->build > aname->build)
316 return 1;
317 else if (v->build < aname->build)
318 return -1;
319
320 if (v->revision > aname->revision)
321 return 1;
322 else if (v->revision < aname->revision)
323 return -1;
324
325 return 0;
326 }
327
328 static gboolean
329 check_policy_versions (MonoAssemblyBindingInfo *info, MonoAssemblyName *name)
330 {
331 if (!info->is_valid)
332 return FALSE;
333
334 /* If has_old_version_top doesn't exist, we don't have an interval */
335 if (!info->has_old_version_top) {
336 if (compare_versions (&info->old_version_bottom, name) == 0)
337 return TRUE;
338
339 return FALSE;
340 }
341
342 /* Check that the version defined by name is valid for the interval */
343 if (compare_versions (&info->old_version_top, name) < 0)
344 return FALSE;
345
346 /* We should be greater or equal than the small version */
347 if (compare_versions (&info->old_version_bottom, name) > 0)
348 return FALSE;
349
350 return TRUE;
351 }
352
353 /**
354 * mono_assembly_names_equal:
355 * @l: first assembly
356 * @r: second assembly.
357 *
358 * Compares two MonoAssemblyNames and returns whether they are equal.
359 *
360 * This compares the names, the cultures, the release version and their
361 * public tokens.
362 *
363 * Returns: TRUE if both assembly names are equal.
364 */
365 gboolean
366 mono_assembly_names_equal (MonoAssemblyName *l, MonoAssemblyName *r)
367 {
368 if (!l->name || !r->name)
369 return FALSE;
370
371 if (strcmp (l->name, r->name))
372 return FALSE;
373
374 if (l->culture && r->culture && strcmp (l->culture, r->culture))
375 return FALSE;
376
377 if (l->major != r->major || l->minor != r->minor ||
378 l->build != r->build || l->revision != r->revision)
379 if (! ((l->major == 0 && l->minor == 0 && l->build == 0 && l->revision == 0) || (r->major == 0 && r->minor == 0 && r->build == 0 && r->revision == 0)))
380 return FALSE;
381
382 if (!l->public_key_token [0] || !r->public_key_token [0])
383 return TRUE;
384
385 if (!mono_public_tokens_are_equal (l->public_key_token, r->public_key_token))
386 return FALSE;
387
388 return TRUE;
389 }
390
391 static MonoAssembly *
392 load_in_path (const char *basename, const char** search_path, MonoImageOpenStatus *status, MonoBoolean refonly)
393 {
394 int i;
395 char *fullpath;
396 MonoAssembly *result;
397
398 for (i = 0; search_path [i]; ++i) {
399 fullpath = g_build_filename (search_path [i], basename, NULL);
400 result = mono_assembly_open_full (fullpath, status, refonly);
401 g_free (fullpath);
402 if (result)
403 return result;
404 }
405 return NULL;
406 }
407
408 /**
409 * mono_assembly_setrootdir:
410 * @root_dir: The pathname of the root directory where we will locate assemblies
411 *
412 * This routine sets the internal default root directory for looking up
413 * assemblies.
414 *
415 * This is used by Windows installations to compute dynamically the
416 * place where the Mono assemblies are located.
417 *
418 */
419 void
420 mono_assembly_setrootdir (const char *root_dir)
421 {
422 /*
423 * Override the MONO_ASSEMBLIES directory configured at compile time.
424 */
425 /* Leak if called more than once */
426 default_path [0] = g_strdup (root_dir);
427 }
428
429 /**
430 * mono_assembly_getrootdir:
431 *
432 * Obtains the root directory used for looking up assemblies.
433 *
434 * Returns: a string with the directory, this string should not be freed.
435 */
436 G_CONST_RETURN gchar *
437 mono_assembly_getrootdir (void)
438 {
439 return default_path [0];
440 }
441
442 /**
443 * mono_set_dirs:
444 * @assembly_dir: the base directory for assemblies
445 * @config_dir: the base directory for configuration files
446 *
447 * This routine is used internally and by developers embedding
448 * the runtime into their own applications.
449 *
450 * There are a number of cases to consider: Mono as a system-installed
451 * package that is available on the location preconfigured or Mono in
452 * a relocated location.
453 *
454 * If you are using a system-installed Mono, you can pass NULL
455 * to both parameters. If you are not, you should compute both
456 * directory values and call this routine.
457 *
458 * The values for a given PREFIX are:
459 *
460 * assembly_dir: PREFIX/lib
461 * config_dir: PREFIX/etc
462 *
463 * Notice that embedders that use Mono in a relocated way must
464 * compute the location at runtime, as they will be in control
465 * of where Mono is installed.
466 */
467 void
468 mono_set_dirs (const char *assembly_dir, const char *config_dir)
469 {
470 #if defined (MONO_ASSEMBLIES)
471 if (assembly_dir == NULL)
472 assembly_dir = MONO_ASSEMBLIES;
473 #endif
474 #if defined (MONO_CFG_DIR)
475 if (config_dir == NULL)
476 config_dir = MONO_CFG_DIR;
477 #endif
478 mono_assembly_setrootdir (assembly_dir);
479 mono_set_config_dir (config_dir);
480 }
481
482 #ifndef PLATFORM_WIN32
483
484 static char *
485 compute_base (char *path)
486 {
487 char *p = strrchr (path, '/');
488 if (p == NULL)
489 return NULL;
490
491 /* Not a well known Mono executable, we are embedded, cant guess the base */
492 if (strcmp (p, "/mono") && strcmp (p, "/monodis") && strcmp (p, "/mint") && strcmp (p, "/monodiet"))
493 return NULL;
494
495 *p = 0;
496 p = strrchr (path, '/');
497 if (p == NULL)
498 return NULL;
499
500 if (strcmp (p, "/bin") != 0)
501 return NULL;
502 *p = 0;
503 return path;
504 }
505
506 static void
507 fallback (void)
508 {
509 mono_set_dirs (MONO_ASSEMBLIES, MONO_CFG_DIR);
510 }
511
512 static void
513 set_dirs (char *exe)
514 {
515 char *base;
516 char *config, *lib, *mono;
517 struct stat buf;
518
519 /*
520 * Only /usr prefix is treated specially
521 */
522 if (strncmp (exe, MONO_BINDIR, strlen (MONO_BINDIR)) == 0 || (base = compute_base (exe)) == NULL){
523 fallback ();
524 return;
525 }
526
527 config = g_build_filename (base, "etc", NULL);
528 lib = g_build_filename (base, "lib", NULL);
529 mono = g_build_filename (lib, "mono/1.0", NULL);
530 if (stat (mono, &buf) == -1)
531 fallback ();
532 else {
533 mono_set_dirs (lib, config);
534 }
535
536 g_free (config);
537 g_free (lib);
538 g_free (mono);
539 }
540
541 #endif /* PLATFORM_WIN32 */
542
543 /**
544 * mono_set_rootdir:
545 *
546 * Registers the root directory for the Mono runtime, for Linux and Solaris 10,
547 * this auto-detects the prefix where Mono was installed.
548 */
549 void
550 mono_set_rootdir (void)
551 {
552 #ifdef PLATFORM_WIN32
553 gchar *bindir, *installdir, *root, *name, *config;
554
555 name = mono_get_module_file_name ((HMODULE) &__ImageBase);
556 bindir = g_path_get_dirname (name);
557 installdir = g_path_get_dirname (bindir);
558 root = g_build_path (G_DIR_SEPARATOR_S, installdir, "lib", NULL);
559
560 config = g_build_filename (root, "..", "etc", NULL);
561 mono_set_dirs (root, config);
562
563 g_free (config);
564 g_free (root);
565 g_free (installdir);
566 g_free (bindir);
567 g_free (name);
568 #elif defined(DISABLE_MONO_AUTODETECTION)
569 fallback ();
570 #else
571 char buf [4096];
572 int s;
573 char *str;
574
575 /* Linux style */
576 s = readlink ("/proc/self/exe", buf, sizeof (buf)-1);
577
578 if (s != -1){
579 buf [s] = 0;
580 set_dirs (buf);
581 return;
582 }
583
584 /* Solaris 10 style */
585 str = g_strdup_printf ("/proc/%d/path/a.out", getpid ());
586 s = readlink (str, buf, sizeof (buf)-1);
587 g_free (str);
588 if (s != -1){
589 buf [s] = 0;
590 set_dirs (buf);
591 return;
592 }
593 fallback ();
594 #endif
595 }
596
597 /**
598 * mono_assemblies_init:
599 *
600 * Initialize global variables used by this module.
601 */
602 void
603 mono_assemblies_init (void)
604 {
605 /*
606 * Initialize our internal paths if we have not been initialized yet.
607 * This happens when embedders use Mono.
608 */
609 if (mono_assembly_getrootdir () == NULL)
610 mono_set_rootdir ();
611
612 check_path_env ();
613 check_extra_gac_path_env ();
614
615 InitializeCriticalSection (&assemblies_mutex);
616 }
617
618 gboolean
619 mono_assembly_fill_assembly_name (MonoImage *image, MonoAssemblyName *aname)
620 {
621 MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLY];
622 guint32 cols [MONO_ASSEMBLY_SIZE];
623
624 if (!t->rows)
625 return FALSE;
626
627 mono_metadata_decode_row (t, 0, cols, MONO_ASSEMBLY_SIZE);
628
629 aname->hash_len = 0;
630 aname->hash_value = NULL;
631 aname->name = mono_metadata_string_heap (image, cols [MONO_ASSEMBLY_NAME]);
632 aname->culture = mono_metadata_string_heap (image, cols [MONO_ASSEMBLY_CULTURE]);
633 aname->flags = cols [MONO_ASSEMBLY_FLAGS];
634 aname->major = cols [MONO_ASSEMBLY_MAJOR_VERSION];
635 aname->minor = cols [MONO_ASSEMBLY_MINOR_VERSION];
636 aname->build = cols [MONO_ASSEMBLY_BUILD_NUMBER];
637 aname->revision = cols [MONO_ASSEMBLY_REV_NUMBER];
638 aname->hash_alg = cols [MONO_ASSEMBLY_HASH_ALG];
639 if (cols [MONO_ASSEMBLY_PUBLIC_KEY]) {
640 guchar* token = g_malloc (8);
641 gchar* encoded;
642 const gchar* pkey;
643 int len;
644
645 pkey = mono_metadata_blob_heap (image, cols [MONO_ASSEMBLY_PUBLIC_KEY]);
646 len = mono_metadata_decode_blob_size (pkey, &pkey);
647 aname->public_key = (guchar*)pkey;
648
649 mono_digest_get_public_token (token, aname->public_key, len);
650 encoded = encode_public_tok (token, 8);
651 g_strlcpy ((char*)aname->public_key_token, encoded, MONO_PUBLIC_KEY_TOKEN_LENGTH);
652
653 g_free (encoded);
654 g_free (token);
655 }
656 else {
657 aname->public_key = NULL;
658 memset (aname->public_key_token, 0, MONO_PUBLIC_KEY_TOKEN_LENGTH);
659 }
660
661 if (cols [MONO_ASSEMBLY_PUBLIC_KEY]) {
662 aname->public_key = (guchar*)mono_metadata_blob_heap (image, cols [MONO_ASSEMBLY_PUBLIC_KEY]);
663 }
664 else
665 aname->public_key = 0;
666
667 return TRUE;
668 }
669
670 /**
671 * mono_stringify_assembly_name:
672 * @aname: the assembly name.
673 *
674 * Convert @aname into its string format. The returned string is dynamically
675 * allocated and should be freed by the caller.
676 *
677 * Returns: a newly allocated string with a string representation of
678 * the assembly name.
679 */
680 char*
681 mono_stringify_assembly_name (MonoAssemblyName *aname)
682 {
683 return g_strdup_printf (
684 "%s, Version=%d.%d.%d.%d, Culture=%s, PublicKeyToken=%s%s",
685 aname->name,
686 aname->major, aname->minor, aname->build, aname->revision,
687 aname->culture && *aname->culture? aname->culture: "neutral",
688 aname->public_key_token [0] ? (char *)aname->public_key_token : "null",
689 (aname->flags & ASSEMBLYREF_RETARGETABLE_FLAG) ? ", Retargetable=Yes" : "");
690 }
691
692 static gchar*
693 assemblyref_public_tok (MonoImage *image, guint32 key_index, guint32 flags)
694 {
695 const gchar *public_tok;
696 int len;
697
698 public_tok = mono_metadata_blob_heap (image, key_index);
699 len = mono_metadata_decode_blob_size (public_tok, &public_tok);
700
701 if (flags & ASSEMBLYREF_FULL_PUBLIC_KEY_FLAG) {
702 guchar token [8];
703 mono_digest_get_public_token (token, (guchar*)public_tok, len);
704 return encode_public_tok (token, 8);
705 }
706
707 return encode_public_tok ((guchar*)public_tok, len);
708 }
709
710 /**
711 * mono_assembly_addref:
712 * @assemnly: the assembly to reference
713 *
714 * This routine increments the reference count on a MonoAssembly.
715 * The reference count is reduced every time the method mono_assembly_close() is
716 * invoked.
717 */
718 void
719 mono_assembly_addref (MonoAssembly *assembly)
720 {
721 InterlockedIncrement (&assembly->ref_count);
722 }
723
724 static MonoAssemblyName *
725 mono_assembly_remap_version (MonoAssemblyName *aname, MonoAssemblyName *dest_aname)
726 {
727 const MonoRuntimeInfo *current_runtime;
728 int pos, first, last;
729
730 if (aname->name == NULL) return aname;
731 current_runtime = mono_get_runtime_info ();
732
733 first = 0;
734 last = G_N_ELEMENTS (framework_assemblies) - 1;
735
736 while (first <= last) {
737 int res;
738 pos = first + (last - first) / 2;
739 res = strcmp (aname->name, framework_assemblies[pos].assembly_name);
740 if (res == 0) {
741 const AssemblyVersionSet* vset;
742 int index = framework_assemblies[pos].version_set_index;
743 g_assert (index < G_N_ELEMENTS (current_runtime->version_sets));
744 vset = &current_runtime->version_sets [index];
745
746 if (aname->major == vset->major && aname->minor == vset->minor &&
747 aname->build == vset->build && aname->revision == vset->revision)
748 return aname;
749
750 if ((aname->major | aname->minor | aname->build | aname->revision) != 0)
751 mono_trace (G_LOG_LEVEL_WARNING, MONO_TRACE_ASSEMBLY,
752 "The request to load the assembly %s v%d.%d.%d.%d was remapped to v%d.%d.%d.%d",
753 aname->name,
754 aname->major, aname->minor, aname->build, aname->revision,
755 vset->major, vset->minor, vset->build, vset->revision
756 );
757
758 memcpy (dest_aname, aname, sizeof(MonoAssemblyName));
759 dest_aname->major = vset->major;
760 dest_aname->minor = vset->minor;
761 dest_aname->build = vset->build;
762 dest_aname->revision = vset->revision;
763 return dest_aname;
764 } else if (res < 0) {
765 last = pos - 1;
766 } else {
767 first = pos + 1;
768 }
769 }
770 return aname;
771 }
772
773 /*
774 * mono_assembly_get_assemblyref:
775 *
776 * Fill out ANAME with the assembly name of the INDEXth assembly reference in IMAGE.
777 */
778 void
779 mono_assembly_get_assemblyref (MonoImage *image, int index, MonoAssemblyName *aname)
780 {
781 MonoTableInfo *t;
782 guint32 cols [MONO_ASSEMBLYREF_SIZE];
783 const char *hash;
784
785 t = &image->tables [MONO_TABLE_ASSEMBLYREF];
786
787 mono_metadata_decode_row (t, index, cols, MONO_ASSEMBLYREF_SIZE);
788
789 hash = mono_metadata_blob_heap (image, cols [MONO_ASSEMBLYREF_HASH_VALUE]);
790 aname->hash_len = mono_metadata_decode_blob_size (hash, &hash);
791 aname->hash_value = hash;
792 aname->name = mono_metadata_string_heap (image, cols [MONO_ASSEMBLYREF_NAME]);
793 aname->culture = mono_metadata_string_heap (image, cols [MONO_ASSEMBLYREF_CULTURE]);
794 aname->flags = cols [MONO_ASSEMBLYREF_FLAGS];
795 aname->major = cols [MONO_ASSEMBLYREF_MAJOR_VERSION];
796 aname->minor = cols [MONO_ASSEMBLYREF_MINOR_VERSION];
797 aname->build = cols [MONO_ASSEMBLYREF_BUILD_NUMBER];
798 aname->revision = cols [MONO_ASSEMBLYREF_REV_NUMBER];
799
800 if (cols [MONO_ASSEMBLYREF_PUBLIC_KEY]) {
801 gchar *token = assemblyref_public_tok (image, cols [MONO_ASSEMBLYREF_PUBLIC_KEY], aname->flags);
802 g_strlcpy ((char*)aname->public_key_token, token, MONO_PUBLIC_KEY_TOKEN_LENGTH);
803 g_free (token);
804 } else {
805 memset (aname->public_key_token, 0, MONO_PUBLIC_KEY_TOKEN_LENGTH);
806 }
807 }
808
809 void
810 mono_assembly_load_reference (MonoImage *image, int index)
811 {
812 MonoAssembly *reference;
813 MonoAssemblyName aname;
814 MonoImageOpenStatus status;
815
816 /*
817 * image->references is shared between threads, so we need to access
818 * it inside a critical section.
819 */
820 mono_assemblies_lock ();
821 if (!image->references) {
822 MonoTableInfo *t = &image->tables [MONO_TABLE_ASSEMBLYREF];
823
824 image->references = g_new0 (MonoAssembly *, t->rows + 1);
825 }
826 reference = image->references [index];
827 mono_assemblies_unlock ();
828 if (reference)
829 return;
830
831 mono_assembly_get_assemblyref (image, index, &aname);
832
833 if (image->assembly && image->assembly->ref_only) {
834 /* We use the loaded corlib */
835 if (!strcmp (aname.name, "mscorlib"))
836 reference = mono_assembly_load_full (&aname, image->assembly->basedir, &status, FALSE);
837 else {
838 reference = mono_assembly_loaded_full (&aname, TRUE);
839 if (!reference)
840 /* Try a postload search hook */
841 reference = mono_assembly_invoke_search_hook_internal (&aname, TRUE, TRUE);
842 }
843
844 /*
845 * Here we must advice that the error was due to
846 * a non loaded reference using the ReflectionOnly api
847 */
848 if (!reference)
849 reference = REFERENCE_MISSING;
850 } else
851 reference = mono_assembly_load (&aname, image->assembly? image->assembly->basedir: NULL, &status);
852
853 if (reference == NULL){
854 char *extra_msg = g_strdup ("");
855
856 if (status == MONO_IMAGE_ERROR_ERRNO && errno == ENOENT) {
857 extra_msg = g_strdup_printf ("The assembly was not found in the Global Assembly Cache, a path listed in the MONO_PATH environment variable, or in the location of the executing assembly (%s).\n", image->assembly != NULL ? image->assembly->basedir : "" );
858 } else if (status == MONO_IMAGE_ERROR_ERRNO) {
859 extra_msg = g_strdup_printf ("System error: %s\n", strerror (errno));
860 } else if (status == MONO_IMAGE_MISSING_ASSEMBLYREF) {
861 extra_msg = g_strdup ("Cannot find an assembly referenced from this one.\n");
862 } else if (status == MONO_IMAGE_IMAGE_INVALID) {
863 extra_msg = g_strdup ("The file exists but is not a valid assembly.\n");
864 }
865
866 g_warning ("The following assembly referenced from %s could not be loaded:\n"
867 " Assembly: %s (assemblyref_index=%d)\n"
868 " Version: %d.%d.%d.%d\n"
869 " Public Key: %s\n%s",
870 image->name, aname.name, index,
871 aname.major, aname.minor, aname.build, aname.revision,
872 strlen ((char*)aname.public_key_token) == 0 ? "(none)" : (char*)aname.public_key_token, extra_msg);
873 g_free (extra_msg);
874 }
875
876 mono_assemblies_lock ();
877 if (reference == NULL) {
878 /* Flag as not found */
879 reference = REFERENCE_MISSING;
880 }
881
882 if (!image->references [index]) {
883 if (reference != REFERENCE_MISSING){
884 mono_assembly_addref (reference);
885 if (image->assembly)
886 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly Ref addref %s %p -> %s %p: %d\n",
887 image->assembly->aname.name, image->assembly, reference->aname.name, reference, reference->ref_count);
888 } else {
889 if (image->assembly)
890 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Failed to load assembly %s %p\n",
891 image->assembly->aname.name, image->assembly);
892 }
893
894 image->references [index] = reference;
895 }
896 mono_assemblies_unlock ();
897
898 if (image->references [index] != reference) {
899 /* Somebody loaded it before us */
900 mono_assembly_close (reference);
901 }
902 }
903
904 void
905 mono_assembly_load_references (MonoImage *image, MonoImageOpenStatus *status)
906 {
907 /* This is a no-op now but it is part of the embedding API so we can't remove it */
908 *status = MONO_IMAGE_OK;
909 }
910
911 typedef struct AssemblyLoadHook AssemblyLoadHook;
912 struct AssemblyLoadHook {
913 AssemblyLoadHook *next;
914 MonoAssemblyLoadFunc func;
915 gpointer user_data;
916 };
917
918 AssemblyLoadHook *assembly_load_hook = NULL;
919
920 void
921 mono_assembly_invoke_load_hook (MonoAssembly *ass)
922 {
923 AssemblyLoadHook *hook;
924
925 for (hook = assembly_load_hook; hook; hook = hook->next) {
926 hook->func (ass, hook->user_data);
927 }
928 }
929
930 void
931 mono_install_assembly_load_hook (MonoAssemblyLoadFunc func, gpointer user_data)
932 {
933 AssemblyLoadHook *hook;
934
935 g_return_if_fail (func != NULL);
936
937 hook = g_new0 (AssemblyLoadHook, 1);
938 hook->func = func;
939 hook->user_data = user_data;
940 hook->next = assembly_load_hook;
941 assembly_load_hook = hook;
942 }
943
944 static void
945 free_assembly_load_hooks (void)
946 {
947 AssemblyLoadHook *hook, *next;
948
949 for (hook = assembly_load_hook; hook; hook = next) {
950 next = hook->next;
951 g_free (hook);
952 }
953 }
954
955 typedef struct AssemblySearchHook AssemblySearchHook;
956 struct AssemblySearchHook {
957 AssemblySearchHook *next;
958 MonoAssemblySearchFunc func;
959 gboolean refonly;
960 gboolean postload;
961 gpointer user_data;
962 };
963
964 AssemblySearchHook *assembly_search_hook = NULL;
965
966 static MonoAssembly*
967 mono_assembly_invoke_search_hook_internal (MonoAssemblyName *aname, gboolean refonly, gboolean postload)
968 {
969 AssemblySearchHook *hook;
970
971 for (hook = assembly_search_hook; hook; hook = hook->next) {
972 if ((hook->refonly == refonly) && (hook->postload == postload)) {
973 MonoAssembly *ass = hook->func (aname, hook->user_data);
974 if (ass)
975 return ass;
976 }
977 }
978
979 return NULL;
980 }
981
982 MonoAssembly*
983 mono_assembly_invoke_search_hook (MonoAssemblyName *aname)
984 {
985 return mono_assembly_invoke_search_hook_internal (aname, FALSE, FALSE);
986 }
987
988 static void
989 mono_install_assembly_search_hook_internal (MonoAssemblySearchFunc func, gpointer user_data, gboolean refonly, gboolean postload)
990 {
991 AssemblySearchHook *hook;
992
993 g_return_if_fail (func != NULL);
994
995 hook = g_new0 (AssemblySearchHook, 1);
996 hook->func = func;
997 hook->user_data = user_data;
998 hook->refonly = refonly;
999 hook->postload = postload;
1000 hook->next = assembly_search_hook;
1001 assembly_search_hook = hook;
1002 }
1003
1004 void
1005 mono_install_assembly_search_hook (MonoAssemblySearchFunc func, gpointer user_data)
1006 {
1007 mono_install_assembly_search_hook_internal (func, user_data, FALSE, FALSE);
1008 }
1009
1010 static void
1011 free_assembly_search_hooks (void)
1012 {
1013 AssemblySearchHook *hook, *next;
1014
1015 for (hook = assembly_search_hook; hook; hook = next) {
1016 next = hook->next;
1017 g_free (hook);
1018 }
1019 }
1020
1021 void
1022 mono_install_assembly_refonly_search_hook (MonoAssemblySearchFunc func, gpointer user_data)
1023 {
1024 mono_install_assembly_search_hook_internal (func, user_data, TRUE, FALSE);
1025 }
1026
1027 void
1028 mono_install_assembly_postload_search_hook (MonoAssemblySearchFunc func, gpointer user_data)
1029 {
1030 mono_install_assembly_search_hook_internal (func, user_data, FALSE, TRUE);
1031 }
1032
1033 void
1034 mono_install_assembly_postload_refonly_search_hook (MonoAssemblySearchFunc func, gpointer user_data)
1035 {
1036 mono_install_assembly_search_hook_internal (func, user_data, TRUE, TRUE);
1037 }
1038
1039 typedef struct AssemblyPreLoadHook AssemblyPreLoadHook;
1040 struct AssemblyPreLoadHook {
1041 AssemblyPreLoadHook *next;
1042 MonoAssemblyPreLoadFunc func;
1043 gpointer user_data;
1044 };
1045
1046 static AssemblyPreLoadHook *assembly_preload_hook = NULL;
1047 static AssemblyPreLoadHook *assembly_refonly_preload_hook = NULL;
1048
1049 static MonoAssembly *
1050 invoke_assembly_preload_hook (MonoAssemblyName *aname, gchar **assemblies_path)
1051 {
1052 AssemblyPreLoadHook *hook;
1053 MonoAssembly *assembly;
1054
1055 for (hook = assembly_preload_hook; hook; hook = hook->next) {
1056 assembly = hook->func (aname, assemblies_path, hook->user_data);
1057 if (assembly != NULL)
1058 return assembly;
1059 }
1060
1061 return NULL;
1062 }
1063
1064 static MonoAssembly *
1065 invoke_assembly_refonly_preload_hook (MonoAssemblyName *aname, gchar **assemblies_path)
1066 {
1067 AssemblyPreLoadHook *hook;
1068 MonoAssembly *assembly;
1069
1070 for (hook = assembly_refonly_preload_hook; hook; hook = hook->next) {
1071 assembly = hook->func (aname, assemblies_path, hook->user_data);
1072 if (assembly != NULL)
1073 return assembly;
1074 }
1075
1076 return NULL;
1077 }
1078
1079 void
1080 mono_install_assembly_preload_hook (MonoAssemblyPreLoadFunc func, gpointer user_data)
1081 {
1082 AssemblyPreLoadHook *hook;
1083
1084 g_return_if_fail (func != NULL);
1085
1086 hook = g_new0 (AssemblyPreLoadHook, 1);
1087 hook->func = func;
1088 hook->user_data = user_data;
1089 hook->next = assembly_preload_hook;
1090 assembly_preload_hook = hook;
1091 }
1092
1093 void
1094 mono_install_assembly_refonly_preload_hook (MonoAssemblyPreLoadFunc func, gpointer user_data)
1095 {
1096 AssemblyPreLoadHook *hook;
1097
1098 g_return_if_fail (func != NULL);
1099
1100 hook = g_new0 (AssemblyPreLoadHook, 1);
1101 hook->func = func;
1102 hook->user_data = user_data;
1103 hook->next = assembly_refonly_preload_hook;
1104 assembly_refonly_preload_hook = hook;
1105 }
1106
1107 static void
1108 free_assembly_preload_hooks (void)
1109 {
1110 AssemblyPreLoadHook *hook, *next;
1111
1112 for (hook = assembly_preload_hook; hook; hook = next) {
1113 next = hook->next;
1114 g_free (hook);
1115 }
1116
1117 for (hook = assembly_refonly_preload_hook; hook; hook = next) {
1118 next = hook->next;
1119 g_free (hook);
1120 }
1121 }
1122
1123 static gchar *
1124 absolute_dir (const gchar *filename)
1125 {
1126 gchar *cwd;
1127 gchar *mixed;
1128 gchar **parts;
1129 gchar *part;
1130 GList *list, *tmp;
1131 GString *result;
1132 gchar *res;
1133 gint i;
1134
1135 if (g_path_is_absolute (filename)) {
1136 part = g_path_get_dirname (filename);
1137 res = g_strconcat (part, G_DIR_SEPARATOR_S, NULL);
1138 g_free (part);
1139 return res;
1140 }
1141
1142 cwd = g_get_current_dir ();
1143 mixed = g_build_filename (cwd, filename, NULL);
1144 parts = g_strsplit (mixed, G_DIR_SEPARATOR_S, 0);
1145 g_free (mixed);
1146 g_free (cwd);
1147
1148 list = NULL;
1149 for (i = 0; (part = parts [i]) != NULL; i++) {
1150 if (!strcmp (part, "."))
1151 continue;
1152
1153 if (!strcmp (part, "..")) {
1154 if (list && list->next) /* Don't remove root */
1155 list = g_list_delete_link (list, list);
1156 } else {
1157 list = g_list_prepend (list, part);
1158 }
1159 }
1160
1161 result = g_string_new ("");
1162 list = g_list_reverse (list);
1163
1164 /* Ignores last data pointer, which should be the filename */
1165 for (tmp = list; tmp && tmp->next != NULL; tmp = tmp->next){
1166 if (tmp->data)
1167 g_string_append_printf (result, "%s%c", (char *) tmp->data,
1168 G_DIR_SEPARATOR);
1169 }
1170
1171 res = result->str;
1172 g_string_free (result, FALSE);
1173 g_list_free (list);
1174 g_strfreev (parts);
1175 if (*res == '\0') {
1176 g_free (res);
1177 return g_strdup (".");
1178 }
1179
1180 return res;
1181 }
1182
1183 /**
1184 * mono_assembly_open_from_bundle:
1185 * @filename: Filename requested
1186 * @status: return value
1187 *
1188 * This routine tries to open the assembly specified by `filename' from the
1189 * defined bundles, if found, returns the MonoImage for it, if not found
1190 * returns NULL
1191 */
1192 MonoImage *
1193 mono_assembly_open_from_bundle (const char *filename, MonoImageOpenStatus *status, gboolean refonly)
1194 {
1195 int i;
1196 char *name;
1197 MonoImage *image = NULL;
1198
1199 /*
1200 * we do a very simple search for bundled assemblies: it's not a general
1201 * purpose assembly loading mechanism.
1202 */
1203
1204 if (!bundles)
1205 return NULL;
1206
1207 name = g_path_get_basename (filename);
1208
1209 mono_assemblies_lock ();
1210 for (i = 0; !image && bundles [i]; ++i) {
1211 if (strcmp (bundles [i]->name, name) == 0) {
1212 image = mono_image_open_from_data_full ((char*)bundles [i]->data, bundles [i]->size, FALSE, status, refonly);
1213 break;
1214 }
1215 }
1216 mono_assemblies_unlock ();
1217 g_free (name);
1218 if (image) {
1219 mono_image_addref (image);
1220 return image;
1221 }
1222 return NULL;
1223 }
1224
1225 MonoAssembly *
1226 mono_assembly_open_full (const char *filename, MonoImageOpenStatus *status, gboolean refonly)
1227 {
1228 MonoImage *image;
1229 MonoAssembly *ass;
1230 MonoImageOpenStatus def_status;
1231 gchar *fname;
1232 gchar *new_fname;
1233
1234 g_return_val_if_fail (filename != NULL, NULL);
1235
1236 if (!status)
1237 status = &def_status;
1238 *status = MONO_IMAGE_OK;
1239
1240 if (strncmp (filename, "file://", 7) == 0) {
1241 GError *error = NULL;
1242 gchar *uri = (gchar *) filename;
1243 gchar *tmpuri;
1244
1245 /*
1246 * MS allows file://c:/... and fails on file://localhost/c:/...
1247 * They also throw an IndexOutOfRangeException if "file://"
1248 */
1249 if (uri [7] != '/')
1250 uri = g_strdup_printf ("file:///%s", uri + 7);
1251
1252 tmpuri = uri;
1253 uri = mono_escape_uri_string (tmpuri);
1254 fname = g_filename_from_uri (uri, NULL, &error);
1255 g_free (uri);
1256
1257 if (tmpuri != filename)
1258 g_free (tmpuri);
1259
1260 if (error != NULL) {
1261 g_warning ("%s\n", error->message);
1262 g_error_free (error);
1263 fname = g_strdup (filename);
1264 }
1265 } else {
1266 fname = g_strdup (filename);
1267 }
1268
1269 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY,
1270 "Assembly Loader probing location: '%s'.", fname);
1271
1272 new_fname = NULL;
1273 if (!mono_assembly_is_in_gac (fname))
1274 new_fname = mono_make_shadow_copy (fname);
1275 if (new_fname && new_fname != fname) {
1276 g_free (fname);
1277 fname = new_fname;
1278 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY,
1279 "Assembly Loader shadow-copied assembly to: '%s'.", fname);
1280 }
1281
1282 image = NULL;
1283
1284 if (bundles != NULL)
1285 image = mono_assembly_open_from_bundle (fname, status, refonly);
1286
1287 if (!image)
1288 image = mono_image_open_full (fname, status, refonly);
1289
1290 if (!image){
1291 if (*status == MONO_IMAGE_OK)
1292 *status = MONO_IMAGE_ERROR_ERRNO;
1293 g_free (fname);
1294 return NULL;
1295 }
1296
1297 if (image->assembly) {
1298 /* Already loaded by another appdomain */
1299 mono_assembly_invoke_load_hook (image->assembly);
1300 mono_image_close (image);
1301 g_free (fname);
1302 return image->assembly;
1303 }
1304
1305 ass = mono_assembly_load_from_full (image, fname, status, refonly);
1306
1307 if (ass) {
1308 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY,
1309 "Assembly Loader loaded assembly from location: '%s'.", filename);
1310 if (!refonly)
1311 mono_config_for_assembly (ass->image);
1312 }
1313
1314 /* Clear the reference added by mono_image_open */
1315 mono_image_close (image);
1316
1317 g_free (fname);
1318
1319 return ass;
1320 }
1321
1322 static void
1323 free_item (gpointer val, gpointer user_data)
1324 {
1325 g_free (val);
1326 }
1327
1328 /*
1329 * mono_assembly_load_friends:
1330 * @ass: an assembly
1331 *
1332 * Load the list of friend assemblies that are allowed to access
1333 * the assembly's internal types and members. They are stored as assembly
1334 * names in custom attributes.
1335 *
1336 * This is an internal method, we need this because when we load mscorlib
1337 * we do not have the mono_defaults.internals_visible_class loaded yet,
1338 * so we need to load these after we initialize the runtime.
1339 *
1340 * LOCKING: Acquires the assemblies lock plus the loader lock.
1341 */
1342 void
1343 mono_assembly_load_friends (MonoAssembly* ass)
1344 {
1345 int i;
1346 MonoCustomAttrInfo* attrs;
1347 GSList *list;
1348
1349 if (ass->friend_assembly_names_inited)
1350 return;
1351
1352 attrs = mono_custom_attrs_from_assembly (ass);
1353 if (!attrs) {
1354 mono_assemblies_lock ();
1355 ass->friend_assembly_names_inited = TRUE;
1356 mono_assemblies_unlock ();
1357 return;
1358 }
1359
1360 mono_assemblies_lock ();
1361 if (ass->friend_assembly_names_inited) {
1362 mono_assemblies_unlock ();
1363 return;
1364 }
1365 mono_assemblies_unlock ();
1366
1367 list = NULL;
1368 /*
1369 * We build the list outside the assemblies lock, the worse that can happen
1370 * is that we'll need to free the allocated list.
1371 */
1372 for (i = 0; i < attrs->num_attrs; ++i) {
1373 MonoCustomAttrEntry *attr = &attrs->attrs [i];
1374 MonoAssemblyName *aname;
1375 const gchar *data;
1376 guint slen;
1377 /* Do some sanity checking */
1378 if (!attr->ctor || attr->ctor->klass != mono_defaults.internals_visible_class)
1379 continue;
1380 if (attr->data_size < 4)
1381 continue;
1382 data = (const char*)attr->data;
1383 /* 0xFF means null string, see custom attr format */
1384 if (data [0] != 1 || data [1] != 0 || (data [2] & 0xFF) == 0xFF)
1385 continue;
1386 slen = mono_metadata_decode_value (data + 2, &data);
1387 aname = g_new0 (MonoAssemblyName, 1);
1388 /*g_print ("friend ass: %s\n", data);*/
1389 if (mono_assembly_name_parse_full (data, aname, TRUE, NULL, NULL)) {
1390 list = g_slist_prepend (list, aname);
1391 } else {
1392 g_free (aname);
1393 }
1394 }
1395 mono_custom_attrs_free (attrs);
1396
1397 mono_assemblies_lock ();
1398 if (ass->friend_assembly_names_inited) {
1399 mono_assemblies_unlock ();
1400 g_slist_foreach (list, free_item, NULL);
1401 g_slist_free (list);
1402 return;
1403 }
1404 ass->friend_assembly_names = list;
1405
1406 /* Because of the double checked locking pattern above */
1407 mono_memory_barrier ();
1408 ass->friend_assembly_names_inited = TRUE;
1409 mono_assemblies_unlock ();
1410 }
1411
1412 /**
1413 * mono_assembly_open:
1414 * @filename: Opens the assembly pointed out by this name
1415 * @status: where a status code can be returned
1416 *
1417 * mono_assembly_open opens the PE-image pointed by @filename, and
1418 * loads any external assemblies referenced by it.
1419 *
1420 * Return: a pointer to the MonoAssembly if @filename contains a valid
1421 * assembly or NULL on error. Details about the error are stored in the
1422 * @status variable.
1423 */
1424 MonoAssembly *
1425 mono_assembly_open (const char *filename, MonoImageOpenStatus *status)
1426 {
1427 return mono_assembly_open_full (filename, status, FALSE);
1428 }
1429
1430 MonoAssembly *
1431 mono_assembly_load_from_full (MonoImage *image, const char*fname,
1432 MonoImageOpenStatus *status, gboolean refonly)
1433 {
1434 MonoAssembly *ass, *ass2;
1435 char *base_dir;
1436
1437 if (!image->tables [MONO_TABLE_ASSEMBLY].rows) {
1438 /* 'image' doesn't have a manifest -- maybe someone is trying to Assembly.Load a .netmodule */
1439 *status = MONO_IMAGE_IMAGE_INVALID;
1440 return NULL;
1441 }
1442
1443 #if defined (PLATFORM_WIN32)
1444 {
1445 gchar *tmp_fn;
1446 int i;
1447
1448 tmp_fn = g_strdup (fname);
1449 for (i = strlen (tmp_fn) - 1; i >= 0; i--) {
1450 if (tmp_fn [i] == '/')
1451 tmp_fn [i] = '\\';
1452 }
1453
1454 base_dir = absolute_dir (tmp_fn);
1455 g_free (tmp_fn);
1456 }
1457 #else
1458 base_dir = absolute_dir (fname);
1459 #endif
1460
1461 /*
1462 * Create assembly struct, and enter it into the assembly cache
1463 */
1464 ass = g_new0 (MonoAssembly, 1);
1465 ass->basedir = base_dir;
1466 ass->ref_only = refonly;
1467 ass->image = image;
1468
1469 mono_profiler_assembly_event (ass, MONO_PROFILE_START_LOAD);
1470
1471 mono_assembly_fill_assembly_name (image, &ass->aname);
1472
1473 if (mono_defaults.corlib && strcmp (ass->aname.name, "mscorlib") == 0) {
1474 // MS.NET doesn't support loading other mscorlibs
1475 g_free (ass);
1476 g_free (base_dir);
1477 mono_image_addref (mono_defaults.corlib);
1478 *status = MONO_IMAGE_OK;
1479 return mono_defaults.corlib->assembly;
1480 }
1481
1482 /* Add a non-temporary reference because of ass->image */
1483 mono_image_addref (image);
1484
1485 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Image addref %s %p -> %s %p: %d\n", ass->aname.name, ass, image->name, image, image->ref_count);
1486
1487 /*
1488 * The load hooks might take locks so we can't call them while holding the
1489 * assemblies lock.
1490 */
1491 if (ass->aname.name) {
1492 ass2 = mono_assembly_invoke_search_hook_internal (&ass->aname, refonly, FALSE);
1493 if (ass2) {
1494 g_free (ass);
1495 g_free (base_dir);
1496 mono_image_close (image);
1497 *status = MONO_IMAGE_OK;
1498 return ass2;
1499 }
1500 }
1501
1502 mono_assemblies_lock ();
1503
1504 if (image->assembly) {
1505 /*
1506 * This means another thread has already loaded the assembly, but not yet
1507 * called the load hooks so the search hook can't find the assembly.
1508 */
1509 mono_assemblies_unlock ();
1510 ass2 = image->assembly;
1511 g_free (ass);
1512 g_free (base_dir);
1513 mono_image_close (image);
1514 *status = MONO_IMAGE_OK;
1515 return ass2;
1516 }
1517
1518 image->assembly = ass;
1519
1520 loaded_assemblies = g_list_prepend (loaded_assemblies, ass);
1521 mono_assemblies_unlock ();
1522
1523 #ifdef PLATFORM_WIN32
1524 if (image->is_module_handle)
1525 mono_image_fixup_vtable (image);
1526 #endif
1527
1528 mono_assembly_invoke_load_hook (ass);
1529
1530 mono_profiler_assembly_loaded (ass, MONO_PROFILE_OK);
1531
1532 return ass;
1533 }
1534
1535 MonoAssembly *
1536 mono_assembly_load_from (MonoImage *image, const char *fname,
1537 MonoImageOpenStatus *status)
1538 {
1539 return mono_assembly_load_from_full (image, fname, status, FALSE);
1540 }
1541
1542 /**
1543 * mono_assembly_name_free:
1544 * @aname: assembly name to free
1545 *
1546 * Frees the provided assembly name object.
1547 * (it does not frees the object itself, only the name members).
1548 */
1549 void
1550 mono_assembly_name_free (MonoAssemblyName *aname)
1551 {
1552 if (aname == NULL)
1553 return;
1554
1555 g_free ((void *) aname->name);
1556 g_free ((void *) aname->culture);
1557 g_free ((void *) aname->hash_value);
1558 }
1559
1560 static gboolean
1561 parse_public_key (const gchar *key, gchar** pubkey)
1562 {
1563 const gchar *pkey;
1564 gchar header [16], val, *arr;
1565 gint i, j, offset, bitlen, keylen, pkeylen;
1566
1567 keylen = strlen (key) >> 1;
1568 if (keylen < 1)
1569 return FALSE;
1570
1571 val = g_ascii_xdigit_value (key [0]) << 4;
1572 val |= g_ascii_xdigit_value (key [1]);
1573 switch (val) {
1574 case 0x00:
1575 if (keylen < 13)
1576 return FALSE;
1577 val = g_ascii_xdigit_value (key [24]);
1578 val |= g_ascii_xdigit_value (key [25]);
1579 if (val != 0x06)
1580 return FALSE;
1581 pkey = key + 24;
1582 break;
1583 case 0x06:
1584 pkey = key;
1585 break;
1586 default:
1587 return FALSE;
1588 }
1589
1590 /* We need the first 16 bytes
1591 * to check whether this key is valid or not */
1592 pkeylen = strlen (pkey) >> 1;
1593 if (pkeylen < 16)
1594 return FALSE;
1595
1596 for (i = 0, j = 0; i < 16; i++) {
1597 header [i] = g_ascii_xdigit_value (pkey [j++]) << 4;
1598 header [i] |= g_ascii_xdigit_value (pkey [j++]);
1599 }
1600
1601 if (header [0] != 0x06 || /* PUBLICKEYBLOB (0x06) */
1602 header [1] != 0x02 || /* Version (0x02) */
1603 header [2] != 0x00 || /* Reserved (word) */
1604 header [3] != 0x00 ||
1605 (guint)(read32 (header + 8)) != 0x31415352) /* DWORD magic = RSA1 */
1606 return FALSE;
1607
1608 /* Based on this length, we _should_ be able to know if the length is right */
1609 bitlen = read32 (header + 12) >> 3;
1610 if ((bitlen + 16 + 4) != pkeylen)
1611 return FALSE;
1612
1613 /* parsing is OK and the public key itself is not requested back */
1614 if (!pubkey)
1615 return TRUE;
1616
1617 /* Encode the size of the blob */
1618 offset = 0;
1619 if (keylen <= 127) {
1620 arr = g_malloc (keylen + 1);
1621 arr [offset++] = keylen;
1622 } else {
1623 arr = g_malloc (keylen + 2);
1624 arr [offset++] = 0x80; /* 10bs */
1625 arr [offset++] = keylen;
1626 }
1627
1628 for (i = offset, j = 0; i < keylen + offset; i++) {
1629 arr [i] = g_ascii_xdigit_value (key [j++]) << 4;
1630 arr [i] |= g_ascii_xdigit_value (key [j++]);
1631 }
1632 if (pubkey)
1633 *pubkey = arr;
1634
1635 return TRUE;
1636 }
1637
1638 static gboolean
1639 build_assembly_name (const char *name, const char *version, const char *culture, const char *token, const char *key, guint32 flags, MonoAssemblyName *aname, gboolean save_public_key)
1640 {
1641 gint major, minor, build, revision;
1642 gint len;
1643 gint version_parts;
1644 gchar *pkey, *pkeyptr, *encoded, tok [8];
1645
1646 memset (aname, 0, sizeof (MonoAssemblyName));
1647
1648 if (version) {
1649 version_parts = sscanf (version, "%u.%u.%u.%u", &major, &minor, &build, &revision);
1650 if (version_parts < 2 || version_parts > 4)
1651 return FALSE;
1652
1653 /* FIXME: we should set build & revision to -1 (instead of 0)
1654 if these are not set in the version string. That way, later on,
1655 we can still determine if these were specified. */
1656 aname->major = major;
1657 aname->minor = minor;
1658 if (version_parts >= 3)
1659 aname->build = build;
1660 else
1661 aname->build = 0;
1662 if (version_parts == 4)
1663 aname->revision = revision;
1664 else
1665 aname->revision = 0;
1666 }
1667
1668 aname->flags = flags;
1669 aname->name = g_strdup (name);
1670
1671 if (culture) {
1672 if (g_ascii_strcasecmp (culture, "neutral") == 0)
1673 aname->culture = g_strdup ("");
1674 else
1675 aname->culture = g_strdup (culture);
1676 }
1677
1678 if (token && strncmp (token, "null", 4) != 0) {
1679 char *lower;
1680
1681 /* the constant includes the ending NULL, hence the -1 */
1682 if (strlen (token) != (MONO_PUBLIC_KEY_TOKEN_LENGTH - 1)) {
1683 mono_assembly_name_free (aname);
1684 return FALSE;
1685 }
1686 lower = g_ascii_strdown (token, MONO_PUBLIC_KEY_TOKEN_LENGTH);
1687 g_strlcpy ((char*)aname->public_key_token, lower, MONO_PUBLIC_KEY_TOKEN_LENGTH);
1688 g_free (lower);
1689 }
1690
1691 if (key) {
1692 if (strcmp (key, "null") == 0 || !parse_public_key (key, &pkey)) {
1693 mono_assembly_name_free (aname);
1694 return FALSE;
1695 }
1696
1697 len = mono_metadata_decode_blob_size ((const gchar *) pkey, (const gchar **) &pkeyptr);
1698 // We also need to generate the key token
1699 mono_digest_get_public_token ((guchar*) tok, (guint8*) pkeyptr, len);
1700 encoded = encode_public_tok ((guchar*) tok, 8);
1701 g_strlcpy ((gchar*)aname->public_key_token, encoded, MONO_PUBLIC_KEY_TOKEN_LENGTH);
1702 g_free (encoded);
1703
1704 if (save_public_key)
1705 aname->public_key = (guint8*) pkey;
1706 else
1707 g_free (pkey);
1708 }
1709
1710 return TRUE;
1711 }
1712
1713 static gboolean
1714 parse_assembly_directory_name (const char *name, const char *dirname, MonoAssemblyName *aname)
1715 {
1716 gchar **parts;
1717 gboolean res;
1718
1719 parts = g_strsplit (dirname, "_", 3);
1720 if (!parts || !parts[0] || !parts[1] || !parts[2]) {
1721 g_strfreev (parts);
1722 return FALSE;
1723 }
1724
1725 res = build_assembly_name (name, parts[0], parts[1], parts[2], NULL, 0, aname, FALSE);
1726 g_strfreev (parts);
1727 return res;
1728 }
1729
1730 gboolean
1731 mono_assembly_name_parse_full (const char *name, MonoAssemblyName *aname, gboolean save_public_key, gboolean *is_version_defined, gboolean *is_token_defined)
1732 {
1733 gchar *dllname;
1734 gchar *version = NULL;
1735 gchar *culture = NULL;
1736 gchar *token = NULL;
1737 gchar *key = NULL;
1738 gchar *retargetable = NULL;
1739 gboolean res;
1740 gchar *value;
1741 gchar **parts;
1742 gchar **tmp;
1743 gboolean version_defined;
1744 gboolean token_defined;
1745 guint32 flags = 0;
1746
1747 if (!is_version_defined)
1748 is_version_defined = &version_defined;
1749 *is_version_defined = FALSE;
1750 if (!is_token_defined)
1751 is_token_defined = &token_defined;
1752 *is_token_defined = FALSE;
1753
1754 parts = tmp = g_strsplit (name, ",", 6);
1755 if (!tmp || !*tmp) {
1756 g_strfreev (tmp);
1757 return FALSE;
1758 }
1759
1760 dllname = g_strstrip (*tmp);
1761
1762 tmp++;
1763
1764 while (*tmp) {
1765 value = g_strstrip (*tmp);
1766 if (!g_ascii_strncasecmp (value, "Version=", 8)) {
1767 *is_version_defined = TRUE;
1768 version = g_strstrip (value + 8);
1769 if (strlen (version) == 0) {
1770 goto cleanup_and_fail;
1771 }
1772 tmp++;
1773 continue;
1774 }
1775
1776 if (!g_ascii_strncasecmp (value, "Culture=", 8)) {
1777 culture = g_strstrip (value + 8);
1778 if (strlen (culture) == 0) {
1779 goto cleanup_and_fail;
1780 }
1781 tmp++;
1782 continue;
1783 }
1784
1785 if (!g_ascii_strncasecmp (value, "PublicKeyToken=", 15)) {
1786 *is_token_defined = TRUE;
1787 token = g_strstrip (value + 15);
1788 if (strlen (token) == 0) {
1789 goto cleanup_and_fail;
1790 }
1791 tmp++;
1792 continue;
1793 }
1794
1795 if (!g_ascii_strncasecmp (value, "PublicKey=", 10)) {
1796 key = g_strstrip (value + 10);
1797 if (strlen (key) == 0) {
1798 goto cleanup_and_fail;
1799 }
1800 tmp++;
1801 continue;
1802 }
1803
1804 if (!g_ascii_strncasecmp (value, "Retargetable=", 13)) {
1805 retargetable = g_strstrip (value + 13);
1806 if (strlen (retargetable) == 0) {
1807 goto cleanup_and_fail;
1808 }
1809 if (!g_ascii_strcasecmp (retargetable, "yes")) {
1810 flags |= ASSEMBLYREF_RETARGETABLE_FLAG;
1811 } else if (g_ascii_strcasecmp (retargetable, "no")) {
1812 goto cleanup_and_fail;
1813 }
1814 tmp++;
1815 continue;
1816 }
1817
1818 if (!g_ascii_strncasecmp (value, "ProcessorArchitecture=", 22)) {
1819 /* this is ignored for now, until we can change MonoAssemblyName */
1820 tmp++;
1821 continue;
1822 }
1823
1824 g_strfreev (parts);
1825 return FALSE;
1826 }
1827
1828 /* if retargetable flag is set, then we must have a fully qualified name */
1829 if (retargetable != NULL && (version == NULL || culture == NULL || (key == NULL && token == NULL))) {
1830 goto cleanup_and_fail;
1831 }
1832
1833 res = build_assembly_name (dllname, version, culture, token, key, flags,
1834 aname, save_public_key);
1835 g_strfreev (parts);
1836 return res;
1837
1838 cleanup_and_fail:
1839 g_strfreev (parts);
1840 return FALSE;
1841 }
1842
1843 /**
1844 * mono_assembly_name_parse:
1845 * @name: name to parse
1846 * @aname: the destination assembly name
1847 *
1848 * Parses an assembly qualified type name and assigns the name,
1849 * version, culture and token to the provided assembly name object.
1850 *
1851 * Returns: true if the name could be parsed.
1852 */
1853 gboolean
1854 mono_assembly_name_parse (const char *name, MonoAssemblyName *aname)
1855 {
1856 return mono_assembly_name_parse_full (name, aname, FALSE, NULL, NULL);
1857 }
1858
1859 static MonoAssembly*
1860 probe_for_partial_name (const char *basepath, const char *fullname, MonoAssemblyName *aname, MonoImageOpenStatus *status)
1861 {
1862 gchar *fullpath = NULL;
1863 GDir *dirhandle;
1864 const char* direntry;
1865 MonoAssemblyName gac_aname;
1866 gint major=-1, minor=0, build=0, revision=0;
1867 gboolean exact_version;
1868
1869 dirhandle = g_dir_open (basepath, 0, NULL);
1870 if (!dirhandle)
1871 return NULL;
1872
1873 exact_version = (aname->major | aname->minor | aname->build | aname->revision) != 0;
1874
1875 while ((direntry = g_dir_read_name (dirhandle))) {
1876 gboolean match = TRUE;
1877
1878 if(!parse_assembly_directory_name (aname->name, direntry, &gac_aname))
1879 continue;
1880
1881 if (aname->culture != NULL && strcmp (aname->culture, gac_aname.culture) != 0)
1882 match = FALSE;
1883
1884 if (match && strlen ((char*)aname->public_key_token) > 0 &&
1885 !mono_public_tokens_are_equal (aname->public_key_token, gac_aname.public_key_token))
1886 match = FALSE;
1887
1888 if (match) {
1889 if (exact_version) {
1890 match = (aname->major == gac_aname.major && aname->minor == gac_aname.minor &&
1891 aname->build == gac_aname.build && aname->revision == gac_aname.revision);
1892 }
1893 else if (gac_aname.major < major)
1894 match = FALSE;
1895 else if (gac_aname.major == major) {
1896 if (gac_aname.minor < minor)
1897 match = FALSE;
1898 else if (gac_aname.minor == minor) {
1899 if (gac_aname.build < build)
1900 match = FALSE;
1901 else if (gac_aname.build == build && gac_aname.revision <= revision)
1902 match = FALSE;
1903 }
1904 }
1905 }
1906
1907 if (match) {
1908 major = gac_aname.major;
1909 minor = gac_aname.minor;
1910 build = gac_aname.build;
1911 revision = gac_aname.revision;
1912 g_free (fullpath);
1913 fullpath = g_build_path (G_DIR_SEPARATOR_S, basepath, direntry, fullname, NULL);
1914 }
1915
1916 mono_assembly_name_free (&gac_aname);
1917 }
1918
1919 g_dir_close (dirhandle);
1920
1921 if (fullpath == NULL)
1922 return NULL;
1923 else {
1924 MonoAssembly *res = mono_assembly_open (fullpath, status);
1925 g_free (fullpath);
1926 return res;
1927 }
1928 }
1929
1930 MonoAssembly*
1931 mono_assembly_load_with_partial_name (const char *name, MonoImageOpenStatus *status)
1932 {
1933 MonoAssembly *res;
1934 MonoAssemblyName *aname, base_name, maped_aname;
1935 gchar *fullname, *gacpath;
1936 gchar **paths;
1937
1938 memset (&base_name, 0, sizeof (MonoAssemblyName));
1939 aname = &base_name;
1940
1941 if (!mono_assembly_name_parse (name, aname))
1942 return NULL;
1943
1944 /*
1945 * If no specific version has been requested, make sure we load the
1946 * correct version for system assemblies.
1947 */
1948 if ((aname->major | aname->minor | aname->build | aname->revision) == 0)
1949 aname = mono_assembly_remap_version (aname, &maped_aname);
1950
1951 res = mono_assembly_loaded (aname);
1952 if (res) {
1953 mono_assembly_name_free (aname);
1954 return res;
1955 }
1956
1957 res = invoke_assembly_preload_hook (aname, assemblies_path);
1958 if (res) {
1959 res->in_gac = FALSE;
1960 mono_assembly_name_free (aname);
1961 return res;
1962 }
1963
1964 fullname = g_strdup_printf ("%s.dll", aname->name);
1965
1966 if (extra_gac_paths) {
1967 paths = extra_gac_paths;
1968 while (!res && *paths) {
1969 gacpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "lib", "mono", "gac", aname->name, NULL);
1970 res = probe_for_partial_name (gacpath, fullname, aname, status);
1971 g_free (gacpath);
1972 paths++;
1973 }
1974 }
1975
1976 if (res) {
1977 res->in_gac = TRUE;
1978 g_free (fullname);
1979 mono_assembly_name_free (aname);
1980 return res;
1981 }
1982
1983 gacpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (), "mono", "gac", aname->name, NULL);
1984 res = probe_for_partial_name (gacpath, fullname, aname, status);
1985 g_free (gacpath);
1986
1987 if (res)
1988 res->in_gac = TRUE;
1989 else {
1990 MonoDomain *domain = mono_domain_get ();
1991 MonoReflectionAssembly *refasm = mono_try_assembly_resolve (domain, mono_string_new (domain, name), FALSE);
1992 if (refasm)
1993 res = refasm->assembly;
1994 }
1995
1996 g_free (fullname);
1997 mono_assembly_name_free (aname);
1998
1999 return res;
2000 }
2001
2002 static MonoBoolean
2003 mono_assembly_is_in_gac (const gchar *filename)
2004 {
2005 const gchar *rootdir;
2006 gchar *gp;
2007 gchar **paths;
2008
2009 if (filename == NULL)
2010 return FALSE;
2011
2012 for (paths = extra_gac_paths; paths && *paths; paths++) {
2013 if (strstr (*paths, filename) != *paths)
2014 continue;
2015
2016 gp = (gchar *) (filename + strlen (*paths));
2017 if (*gp != G_DIR_SEPARATOR)
2018 continue;
2019 gp++;
2020 if (strncmp (gp, "lib", 3))
2021 continue;
2022 gp += 3;
2023 if (*gp != G_DIR_SEPARATOR)
2024 continue;
2025 gp++;
2026 if (strncmp (gp, "mono", 4))
2027 continue;
2028 gp += 4;
2029 if (*gp != G_DIR_SEPARATOR)
2030 continue;
2031 gp++;
2032 if (strncmp (gp, "gac", 3))
2033 continue;
2034 gp += 3;
2035 if (*gp != G_DIR_SEPARATOR)
2036 continue;
2037
2038 return TRUE;
2039 }
2040
2041 rootdir = mono_assembly_getrootdir ();
2042 if (strstr (filename, rootdir) != filename)
2043 return FALSE;
2044
2045 gp = (gchar *) (filename + strlen (rootdir));
2046 if (*gp != G_DIR_SEPARATOR)
2047 return FALSE;
2048 gp++;
2049 if (strncmp (gp, "mono", 4))
2050 return FALSE;
2051 gp += 4;
2052 if (*gp != G_DIR_SEPARATOR)
2053 return FALSE;
2054 gp++;
2055 if (strncmp (gp, "gac", 3))
2056 return FALSE;
2057 gp += 3;
2058 if (*gp != G_DIR_SEPARATOR)
2059 return FALSE;
2060 return TRUE;
2061 }
2062
2063 static MonoImage*
2064 mono_assembly_load_publisher_policy (MonoAssemblyName *aname)
2065 {
2066 MonoImage *image;
2067 gchar *filename, *pname, *name, *culture, *version, *fullpath, *subpath;
2068 gchar **paths;
2069 gint32 len;
2070
2071 if (strstr (aname->name, ".dll")) {
2072 len = strlen (aname->name) - 4;
2073 name = g_malloc (len);
2074 strncpy (name, aname->name, len);
2075 } else
2076 name = g_strdup (aname->name);
2077
2078 if (aname->culture)
2079 culture = g_utf8_strdown (aname->culture, -1);
2080 else
2081 culture = g_strdup ("");
2082
2083 pname = g_strdup_printf ("policy.%d.%d.%s", aname->major, aname->minor, name);
2084 version = g_strdup_printf ("0.0.0.0_%s_%s", culture, aname->public_key_token);
2085 g_free (name);
2086 g_free (culture);
2087
2088 filename = g_strconcat (pname, ".dll", NULL);
2089 subpath = g_build_path (G_DIR_SEPARATOR_S, pname, version, filename, NULL);
2090 g_free (pname);
2091 g_free (version);
2092 g_free (filename);
2093
2094 image = NULL;
2095 if (extra_gac_paths) {
2096 paths = extra_gac_paths;
2097 while (!image && *paths) {
2098 fullpath = g_build_path (G_DIR_SEPARATOR_S, *paths,
2099 "lib", "mono", "gac", subpath, NULL);
2100 image = mono_image_open (fullpath, NULL);
2101 g_free (fullpath);
2102 paths++;
2103 }
2104 }
2105
2106 if (image) {
2107 g_free (subpath);
2108 return image;
2109 }
2110
2111 fullpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (),
2112 "mono", "gac", subpath, NULL);
2113 image = mono_image_open (fullpath, NULL);
2114 g_free (subpath);
2115 g_free (fullpath);
2116
2117 return image;
2118 }
2119
2120 static MonoAssemblyName*
2121 mono_assembly_bind_version (MonoAssemblyBindingInfo *info, MonoAssemblyName *aname, MonoAssemblyName *dest_name)
2122 {
2123 memcpy (dest_name, aname, sizeof (MonoAssemblyName));
2124 dest_name->major = info->new_version.major;
2125 dest_name->minor = info->new_version.minor;
2126 dest_name->build = info->new_version.build;
2127 dest_name->revision = info->new_version.revision;
2128
2129 return dest_name;
2130 }
2131
2132 /* LOCKING: Assumes that we are already locked */
2133 static MonoAssemblyBindingInfo*
2134 search_binding_loaded (MonoAssemblyName *aname)
2135 {
2136 GSList *tmp;
2137
2138 for (tmp = loaded_assembly_bindings; tmp; tmp = tmp->next) {
2139 MonoAssemblyBindingInfo *info = tmp->data;
2140 if (assembly_binding_maps_name (info, aname))
2141 return info;
2142 }
2143
2144 return NULL;
2145 }
2146
2147 static MonoAssemblyName*
2148 mono_assembly_apply_binding (MonoAssemblyName *aname, MonoAssemblyName *dest_name)
2149 {
2150 MonoAssemblyBindingInfo *info, *info2;
2151 MonoImage *ppimage;
2152
2153 if (aname->public_key_token [0] == 0)
2154 return aname;
2155
2156 mono_loader_lock ();
2157 info = search_binding_loaded (aname);
2158 mono_loader_unlock ();
2159 if (info) {
2160 if (!check_policy_versions (info, aname))
2161 return aname;
2162
2163 mono_assembly_bind_version (info, aname, dest_name);
2164 return dest_name;
2165 }
2166
2167 info = g_new0 (MonoAssemblyBindingInfo, 1);
2168 info->major = aname->major;
2169 info->minor = aname->minor;
2170
2171 ppimage = mono_assembly_load_publisher_policy (aname);
2172 if (ppimage) {
2173 get_publisher_policy_info (ppimage, aname, info);
2174 mono_image_close (ppimage);
2175 }
2176
2177 /* Define default error value if needed */
2178 if (!info->is_valid) {
2179 info->name = g_strdup (aname->name);
2180 info->culture = g_strdup (aname->culture);
2181 g_strlcpy ((char *)info->public_key_token, (const char *)aname->public_key_token, MONO_PUBLIC_KEY_TOKEN_LENGTH);
2182 }
2183
2184 mono_loader_lock ();
2185 info2 = search_binding_loaded (aname);
2186 if (info2) {
2187 /* This binding was added by another thread
2188 * before us */
2189 mono_assembly_binding_info_free (info);
2190 g_free (info);
2191
2192 info = info2;
2193 } else
2194 loaded_assembly_bindings = g_slist_prepend (loaded_assembly_bindings, info);
2195
2196 mono_loader_unlock ();
2197
2198 if (!info->is_valid || !check_policy_versions (info, aname))
2199 return aname;
2200
2201 mono_assembly_bind_version (info, aname, dest_name);
2202 return dest_name;
2203 }
2204
2205 /**
2206 * mono_assembly_load_from_gac
2207 *
2208 * @aname: The assembly name object
2209 */
2210 static MonoAssembly*
2211 mono_assembly_load_from_gac (MonoAssemblyName *aname, gchar *filename, MonoImageOpenStatus *status, MonoBoolean refonly)
2212 {
2213 MonoAssembly *result = NULL;
2214 gchar *name, *version, *culture, *fullpath, *subpath;
2215 gint32 len;
2216 gchar **paths;
2217 char *pubtok;
2218
2219 if (aname->public_key_token [0] == 0) {
2220 return NULL;
2221 }
2222
2223 if (strstr (aname->name, ".dll")) {
2224 len = strlen (filename) - 4;
2225 name = g_malloc (len);
2226 strncpy (name, aname->name, len);
2227 } else {
2228 name = g_strdup (aname->name);
2229 }
2230
2231 if (aname->culture) {
2232 culture = g_utf8_strdown (aname->culture, -1);
2233 } else {
2234 culture = g_strdup ("");
2235 }
2236
2237 pubtok = g_ascii_strdown ((char*)aname->public_key_token, MONO_PUBLIC_KEY_TOKEN_LENGTH);
2238 version = g_strdup_printf ("%d.%d.%d.%d_%s_%s", aname->major,
2239 aname->minor, aname->build, aname->revision,
2240 culture, pubtok);
2241 g_free (pubtok);
2242
2243 subpath = g_build_path (G_DIR_SEPARATOR_S, name, version, filename, NULL);
2244 g_free (name);
2245 g_free (version);
2246 g_free (culture);
2247
2248 if (extra_gac_paths) {
2249 paths = extra_gac_paths;
2250 while (!result && *paths) {
2251 fullpath = g_build_path (G_DIR_SEPARATOR_S, *paths, "lib", "mono", "gac", subpath, NULL);
2252 result = mono_assembly_open_full (fullpath, status, refonly);
2253 g_free (fullpath);
2254 paths++;
2255 }
2256 }
2257
2258 if (result) {
2259 result->in_gac = TRUE;
2260 g_free (subpath);
2261 return result;
2262 }
2263
2264 fullpath = g_build_path (G_DIR_SEPARATOR_S, mono_assembly_getrootdir (),
2265 "mono", "gac", subpath, NULL);
2266 result = mono_assembly_open_full (fullpath, status, refonly);
2267 g_free (fullpath);
2268
2269 if (result)
2270 result->in_gac = TRUE;
2271
2272 g_free (subpath);
2273
2274 return result;
2275 }
2276
2277
2278 MonoAssembly*
2279 mono_assembly_load_corlib (const MonoRuntimeInfo *runtime, MonoImageOpenStatus *status)
2280 {
2281 char *corlib_file;
2282
2283 if (corlib) {
2284 /* g_print ("corlib already loaded\n"); */
2285 return corlib;
2286 }
2287
2288 if (assemblies_path) {
2289 corlib = load_in_path ("mscorlib.dll", (const char**)assemblies_path, status, FALSE);
2290 if (corlib)
2291 return corlib;
2292 }
2293
2294 /* Load corlib from mono/<version> */
2295
2296 corlib_file = g_build_filename ("mono", runtime->framework_version, "mscorlib.dll", NULL);
2297 if (assemblies_path) {
2298 corlib = load_in_path (corlib_file, (const char**)assemblies_path, status, FALSE);
2299 if (corlib) {
2300 g_free (corlib_file);
2301 return corlib;
2302 }
2303 }
2304 corlib = load_in_path (corlib_file, default_path, status, FALSE);
2305 g_free (corlib_file);
2306
2307 return corlib;
2308 }
2309
2310 MonoAssembly*
2311 mono_assembly_load_full_nosearch (MonoAssemblyName *aname,
2312 const char *basedir,
2313 MonoImageOpenStatus *status,
2314 gboolean refonly)
2315 {
2316 MonoAssembly *result;
2317 char *fullpath, *filename;
2318 MonoAssemblyName maped_aname, maped_name_pp;
2319 int ext_index;
2320 const char *ext;
2321 int len;
2322
2323 aname = mono_assembly_remap_version (aname, &maped_aname);
2324
2325 /* Reflection only assemblies don't get assembly binding */
2326 if (!refonly)
2327 aname = mono_assembly_apply_binding (aname, &maped_name_pp);
2328
2329 result = mono_assembly_loaded_full (aname, refonly);
2330 if (result)
2331 return result;
2332
2333 result = refonly ? invoke_assembly_refonly_preload_hook (aname, assemblies_path) : invoke_assembly_preload_hook (aname, assemblies_path);
2334 if (result) {
2335 result->in_gac = FALSE;
2336 return result;
2337 }
2338
2339 /* Currently we retrieve the loaded corlib for reflection
2340 * only requests, like a common reflection only assembly
2341 */
2342 if (strcmp (aname->name, "mscorlib") == 0 || strcmp (aname->name, "mscorlib.dll") == 0) {
2343 return mono_assembly_load_corlib (mono_get_runtime_info (), status);
2344 }
2345
2346 len = strlen (aname->name);
2347 for (ext_index = 0; ext_index < 2; ext_index ++) {
2348 ext = ext_index == 0 ? ".dll" : ".exe";
2349 if (len > 4 && (!strcmp (aname->name + len - 4, ".dll") || !strcmp (aname->name + len - 4, ".exe"))) {
2350 filename = g_strdup (aname->name);
2351 /* Don't try appending .dll/.exe if it already has one of those extensions */
2352 ext_index++;
2353 } else {
2354 filename = g_strconcat (aname->name, ext, NULL);
2355 }
2356
2357 result = mono_assembly_load_from_gac (aname, filename, status, refonly);
2358 if (result) {
2359 g_free (filename);
2360 return result;
2361 }
2362
2363 if (basedir) {
2364 fullpath = g_build_filename (basedir, filename, NULL);
2365 result = mono_assembly_open_full (fullpath, status, refonly);
2366 g_free (fullpath);
2367 if (result) {
2368 result->in_gac = FALSE;
2369 g_free (filename);
2370 return result;
2371 }
2372 }
2373
2374 result = load_in_path (filename, default_path, status, refonly);
2375 if (result)
2376 result->in_gac = FALSE;
2377 g_free (filename);
2378 if (result)
2379 return result;
2380 }
2381
2382 return result;
2383 }
2384
2385 /**
2386 * mono_assembly_load_full:
2387 * @aname: A MonoAssemblyName with the assembly name to load.
2388 * @basedir: A directory to look up the assembly at.
2389 * @status: a pointer to a MonoImageOpenStatus to return the status of the load operation
2390 * @refonly: Whether this assembly is being opened in "reflection-only" mode.
2391 *
2392 * Loads the assembly referenced by @aname, if the value of @basedir is not NULL, it
2393 * attempts to load the assembly from that directory before probing the standard locations.
2394 *
2395 * If the assembly is being opened in reflection-only mode (@refonly set to TRUE) then no
2396 * assembly binding takes place.
2397 *
2398 * Returns: the assembly referenced by @aname loaded or NULL on error. On error the
2399 * value pointed by status is updated with an error code.
2400 */
2401 MonoAssembly*
2402 mono_assembly_load_full (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status, gboolean refonly)
2403 {
2404 MonoAssembly *result = mono_assembly_load_full_nosearch (aname, basedir, status, refonly);
2405
2406 if (!result)
2407 /* Try a postload search hook */
2408 result = mono_assembly_invoke_search_hook_internal (aname, refonly, TRUE);
2409 return result;
2410 }
2411
2412 /**
2413 * mono_assembly_load:
2414 * @aname: A MonoAssemblyName with the assembly name to load.
2415 * @basedir: A directory to look up the assembly at.
2416 * @status: a pointer to a MonoImageOpenStatus to return the status of the load operation
2417 *
2418 * Loads the assembly referenced by @aname, if the value of @basedir is not NULL, it
2419 * attempts to load the assembly from that directory before probing the standard locations.
2420 *
2421 * Returns: the assembly referenced by @aname loaded or NULL on error. On error the
2422 * value pointed by status is updated with an error code.
2423 */
2424 MonoAssembly*
2425 mono_assembly_load (MonoAssemblyName *aname, const char *basedir, MonoImageOpenStatus *status)
2426 {
2427 return mono_assembly_load_full (aname, basedir, status, FALSE);
2428 }
2429
2430 MonoAssembly*
2431 mono_assembly_loaded_full (MonoAssemblyName *aname, gboolean refonly)
2432 {
2433 MonoAssembly *res;
2434 MonoAssemblyName maped_aname;
2435
2436 aname = mono_assembly_remap_version (aname, &maped_aname);
2437
2438 res = mono_assembly_invoke_search_hook_internal (aname, refonly, FALSE);
2439
2440 return res;
2441 }
2442
2443 /**
2444 * mono_assembly_loaded:
2445 * @aname: an assembly to look for.
2446 *
2447 * Returns: NULL If the given @aname assembly has not been loaded, or a pointer to
2448 * a MonoAssembly that matches the MonoAssemblyName specified.
2449 */
2450 MonoAssembly*
2451 mono_assembly_loaded (MonoAssemblyName *aname)
2452 {
2453 return mono_assembly_loaded_full (aname, FALSE);
2454 }
2455
2456 /**
2457 * mono_assembly_close:
2458 * @assembly: the assembly to release.
2459 *
2460 * This method releases a reference to the @assembly. The assembly is
2461 * only released when all the outstanding references to it are released.
2462 */
2463 void
2464 mono_assembly_close (MonoAssembly *assembly)
2465 {
2466 GSList *tmp;
2467 g_return_if_fail (assembly != NULL);
2468
2469 if (assembly == REFERENCE_MISSING)
2470 return;
2471
2472 /* Might be 0 already */
2473 if (InterlockedDecrement (&assembly->ref_count) > 0)
2474 return;
2475
2476 mono_profiler_assembly_event (assembly, MONO_PROFILE_START_UNLOAD);
2477
2478 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Unloading assembly %s [%p].", assembly->aname.name, assembly);
2479
2480 mono_debug_close_image (assembly->image);
2481
2482 mono_assemblies_lock ();
2483 loaded_assemblies = g_list_remove (loaded_assemblies, assembly);
2484 mono_assemblies_unlock ();
2485
2486 assembly->image->assembly = NULL;
2487
2488 mono_image_close (assembly->image);
2489
2490 for (tmp = assembly->friend_assembly_names; tmp; tmp = tmp->next) {
2491 MonoAssemblyName *fname = tmp->data;
2492 mono_assembly_name_free (fname);
2493 g_free (fname);
2494 }
2495 g_slist_free (assembly->friend_assembly_names);
2496 g_free (assembly->basedir);
2497 if (assembly->dynamic) {
2498 g_free ((char*)assembly->aname.culture);
2499 } else {
2500 g_free (assembly);
2501 }
2502
2503 mono_profiler_assembly_event (assembly, MONO_PROFILE_END_UNLOAD);
2504 }
2505
2506 MonoImage*
2507 mono_assembly_load_module (MonoAssembly *assembly, guint32 idx)
2508 {
2509 return mono_image_load_file_for_image (assembly->image, idx);
2510 }
2511
2512 void
2513 mono_assembly_foreach (GFunc func, gpointer user_data)
2514 {
2515 GList *copy;
2516
2517 /*
2518 * We make a copy of the list to avoid calling the callback inside the
2519 * lock, which could lead to deadlocks.
2520 */
2521 mono_assemblies_lock ();
2522 copy = g_list_copy (loaded_assemblies);
2523 mono_assemblies_unlock ();
2524
2525 g_list_foreach (loaded_assemblies, func, user_data);
2526
2527 g_list_free (copy);
2528 }
2529
2530 /**
2531 * mono_assemblies_cleanup:
2532 *
2533 * Free all resources used by this module.
2534 */
2535 void
2536 mono_assemblies_cleanup (void)
2537 {
2538 GSList *l;
2539
2540 DeleteCriticalSection (&assemblies_mutex);
2541
2542 for (l = loaded_assembly_bindings; l; l = l->next) {
2543 MonoAssemblyBindingInfo *info = l->data;
2544
2545 mono_assembly_binding_info_free (info);
2546 g_free (info);
2547 }
2548 g_slist_free (loaded_assembly_bindings);
2549
2550 free_assembly_load_hooks ();
2551 free_assembly_search_hooks ();
2552 free_assembly_preload_hooks ();
2553 }
2554
2555 /*
2556 * Holds the assembly of the application, for
2557 * System.Diagnostics.Process::MainModule
2558 */
2559 static MonoAssembly *main_assembly=NULL;
2560
2561 void
2562 mono_assembly_set_main (MonoAssembly *assembly)
2563 {
2564 main_assembly = assembly;
2565 }
2566
2567 /**
2568 * mono_assembly_get_main:
2569 *
2570 * Returns: the assembly for the application, the first assembly that is loaded by the VM
2571 */
2572 MonoAssembly *
2573 mono_assembly_get_main (void)
2574 {
2575 return (main_assembly);
2576 }
2577
2578 /**
2579 * mono_assembly_get_image:
2580 * @assembly: The assembly to retrieve the image from
2581 *
2582 * Returns: the MonoImage associated with this assembly.
2583 */
2584 MonoImage*
2585 mono_assembly_get_image (MonoAssembly *assembly)
2586 {
2587 return assembly->image;
2588 }
2589
2590 void
2591 mono_register_bundled_assemblies (const MonoBundledAssembly **assemblies)
2592 {
2593 bundles = assemblies;
2594 }
2595
2596 #define MONO_DECLSEC_FORMAT_10 0x3C
2597 #define MONO_DECLSEC_FORMAT_20 0x2E
2598 #define MONO_DECLSEC_FIELD 0x53
2599 #define MONO_DECLSEC_PROPERTY 0x54
2600
2601 #define SKIP_VISIBILITY_XML_ATTRIBUTE ("\"SkipVerification\"")
2602 #define SKIP_VISIBILITY_ATTRIBUTE_NAME ("System.Security.Permissions.SecurityPermissionAttribute")
2603 #define SKIP_VISIBILITY_ATTRIBUTE_SIZE (sizeof (SKIP_VISIBILITY_ATTRIBUTE_NAME) - 1)
2604 #define SKIP_VISIBILITY_PROPERTY_NAME ("SkipVerification")
2605 #define SKIP_VISIBILITY_PROPERTY_SIZE (sizeof (SKIP_VISIBILITY_PROPERTY_NAME) - 1)
2606
2607 static gboolean
2608 mono_assembly_try_decode_skip_verification_param (const char *p, const char **resp, gboolean *abort_decoding)
2609 {
2610 int len;
2611 switch (*p++) {
2612 case MONO_DECLSEC_PROPERTY:
2613 break;
2614 case MONO_DECLSEC_FIELD:
2615 default:
2616 *abort_decoding = TRUE;
2617 return FALSE;
2618 break;
2619 }
2620
2621 if (*p++ != MONO_TYPE_BOOLEAN) {
2622 *abort_decoding = TRUE;
2623 return FALSE;
2624 }
2625
2626 /* property name length */
2627 len = mono_metadata_decode_value (p, &p);
2628
2629 if (len >= SKIP_VISIBILITY_PROPERTY_SIZE && !memcmp (p, SKIP_VISIBILITY_PROPERTY_NAME, SKIP_VISIBILITY_PROPERTY_SIZE)) {
2630 p += len;
2631 return *p;
2632 }
2633 p += len + 1;
2634
2635 *resp = p;
2636 return FALSE;
2637 }
2638
2639 static gboolean
2640 mono_assembly_try_decode_skip_verification (const char *p, const char *endn)
2641 {
2642 int i, j, num, len, params_len;
2643
2644 if (*p == MONO_DECLSEC_FORMAT_10) {
2645 gsize read, written;
2646 char *res = g_convert (p, endn - p, "UTF-8", "UTF-16LE", &read, &written, NULL);
2647 if (res) {
2648 gboolean found = strstr (res, SKIP_VISIBILITY_XML_ATTRIBUTE) != NULL;
2649 g_free (res);
2650 return found;
2651 }
2652 return FALSE;
2653 }
2654 if (*p++ != MONO_DECLSEC_FORMAT_20)
2655 return FALSE;
2656
2657 /* number of encoded permission attributes */
2658 num = mono_metadata_decode_value (p, &p);
2659 for (i = 0; i < num; ++i) {
2660 gboolean is_valid = FALSE;
2661 gboolean abort_decoding = FALSE;
2662
2663 /* attribute name length */
2664 len = mono_metadata_decode_value (p, &p);
2665
2666 /* We don't really need to fully decode the type. Comparing the name is enough */
2667 is_valid = len >= SKIP_VISIBILITY_ATTRIBUTE_SIZE && !memcmp (p, SKIP_VISIBILITY_ATTRIBUTE_NAME, SKIP_VISIBILITY_ATTRIBUTE_SIZE);
2668
2669 p += len;
2670
2671 /*size of the params table*/
2672 params_len = mono_metadata_decode_value (p, &p);
2673 if (is_valid) {
2674 const char *params_end = p + params_len;
2675
2676 /* number of parameters */
2677 len = mono_metadata_decode_value (p, &p);
2678
2679 for (j = 0; j < len; ++j) {
2680 if (mono_assembly_try_decode_skip_verification_param (p, &p, &abort_decoding))
2681 return TRUE;
2682 if (abort_decoding)
2683 break;
2684 }
2685 p = params_end;
2686 } else {
2687 p += params_len;
2688 }
2689 }
2690
2691 return FALSE;
2692 }
2693
2694
2695 gboolean
2696 mono_assembly_has_skip_verification (MonoAssembly *assembly)
2697 {
2698 MonoTableInfo *t;
2699 guint32 cols [MONO_DECL_SECURITY_SIZE];
2700 const char *blob;
2701 int i, len;
2702
2703 if (MONO_SECMAN_FLAG_INIT (assembly->skipverification))
2704 return MONO_SECMAN_FLAG_GET_VALUE (assembly->skipverification);
2705
2706 t = &assembly->image->tables [MONO_TABLE_DECLSECURITY];
2707
2708 for (i = 0; i < t->rows; ++i) {
2709 mono_metadata_decode_row (t, i, cols, MONO_DECL_SECURITY_SIZE);
2710 if ((cols [MONO_DECL_SECURITY_PARENT] & MONO_HAS_DECL_SECURITY_MASK) != MONO_HAS_DECL_SECURITY_ASSEMBLY)
2711 continue;
2712 if (cols [MONO_DECL_SECURITY_ACTION] != SECURITY_ACTION_REQMIN)
2713 continue;
2714
2715 blob = mono_metadata_blob_heap (assembly->image, cols [MONO_DECL_SECURITY_PERMISSIONSET]);
2716 len = mono_metadata_decode_blob_size (blob, &blob);
2717 if (!len)
2718 continue;
2719
2720 if (mono_assembly_try_decode_skip_verification (blob, blob + len)) {
2721 MONO_SECMAN_FLAG_SET_VALUE (assembly->skipverification, TRUE);
2722 return TRUE;
2723 }
2724 }
2725
2726 MONO_SECMAN_FLAG_SET_VALUE (assembly->skipverification, FALSE);
2727 return FALSE;
2728 }
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