+++ /dev/null
-/*
- * Copyright (c) 2006-2010 Apple Inc. All Rights Reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-
-/*
- * debugging.c - non-trivial debug support
- */
-#include "utilities/debugging.h"
-#include "utilities/SecCFWrappers.h"
-#include <CoreFoundation/CFSet.h>
-#include <CoreFoundation/CFString.h>
-
-#include <dispatch/dispatch.h>
-
-#include <stdarg.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <pthread.h>
-#include <asl.h>
-
-/** begin: For SimulateCrash **/
-#include <dlfcn.h>
-#include <mach/mach.h>
-/// Type to represent a boolean value.
-#if TARGET_OS_IPHONE && __LP64__
-typedef bool BOOL;
-#else
-typedef signed char BOOL;
-// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
-// even if -funsigned-char is used.
-#endif
-/** end: For SimulateCrash **/
-
-#define MAX_SCOPE_LENGTH 12
-
-#if !defined(NDEBUG)
-static CFStringRef copyScopeName(const char *scope, CFIndex scopeLen) {
- if (scopeLen > MAX_SCOPE_LENGTH)
- scopeLen = MAX_SCOPE_LENGTH - 1;
- return CFStringCreateWithBytes(kCFAllocatorDefault, (const UInt8 *)scope,
- scopeLen, kCFStringEncodingUTF8, false);
-}
-
-pthread_once_t __security_debug_once = PTHREAD_ONCE_INIT;
-static const char *gDebugScope;
-static CFMutableSetRef scopeSet;
-static bool negate = false;
-
-static void __security_debug_init(void) {
- const char *cur_scope = gDebugScope = getenv("DEBUGSCOPE");
- if (cur_scope) {
- if (!strcmp(cur_scope, "all")) {
- scopeSet = NULL;
- negate = true;
- } else if (!strcmp(cur_scope, "none")) {
- scopeSet = NULL;
- negate = false;
- } else {
- scopeSet = CFSetCreateMutable(kCFAllocatorDefault, 0,
- &kCFTypeSetCallBacks);
- if (cur_scope[0] == '-') {
- negate = true;
- cur_scope++;
- } else {
- negate = false;
- }
-
- const char *sep;
- while ((sep = strchr(cur_scope, ','))) {
- CFStringRef scopeName = copyScopeName(cur_scope,
- sep - cur_scope);
- CFSetAddValue(scopeSet, scopeName);
- CFRelease(scopeName);
- cur_scope = sep + 1;
- }
-
- CFStringRef scopeName = copyScopeName(cur_scope,
- strlen(cur_scope));
- CFSetAddValue(scopeSet, scopeName);
- CFRelease(scopeName);
- }
- } else {
- scopeSet = NULL;
- negate = false;
- }
-}
-
-#endif
-
-static CFMutableArrayRef sSecurityLogHandlers;
-
-static CFMutableArrayRef get_log_handlers()
-{
- static dispatch_once_t handlers_once;
-
- dispatch_once(&handlers_once, ^{
- sSecurityLogHandlers = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
-
- CFArrayAppendValue(sSecurityLogHandlers, ^(const char *level, CFStringRef scope, const char *function,
- const char *file, int line, CFStringRef message){
- CFStringRef logStr = CFStringCreateWithFormat(kCFAllocatorDefault, NULL, CFSTR("%@ %s %@\n"), scope ? scope : CFSTR(""), function, message);
- CFStringPerformWithCString(logStr, ^(const char *logMsg) {
- aslmsg msg = asl_new(ASL_TYPE_MSG);
- if (scope) {
- CFStringPerformWithCString(scope, ^(const char *scopeStr) {
- asl_set(msg, ASL_KEY_FACILITY, scopeStr);
- });
- }
- asl_set(msg, ASL_KEY_LEVEL, level);
- asl_set(msg, ASL_KEY_MSG, logMsg);
- asl_send(NULL, msg);
- asl_free(msg);
- });
- CFReleaseSafe(logStr);
- });
- });
-
- return sSecurityLogHandlers;
-}
-
-static void clean_aslclient(void *client)
-{
- asl_close(client);
-}
-
-static aslclient get_aslclient()
-{
- static dispatch_once_t once;
- static pthread_key_t asl_client_key;
- dispatch_once(&once, ^{
- pthread_key_create(&asl_client_key, clean_aslclient);
- });
- aslclient client = pthread_getspecific(asl_client_key);
- if (!client) {
- client = asl_open(NULL, "SecAPI", 0);
- asl_set_filter(client, ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG));
- pthread_setspecific(asl_client_key, client);
- }
-
- return client;
-}
-
-void __security_trace_enter_api(const char *api, CFStringRef format, ...)
-{
- aslmsg msg = asl_new(ASL_TYPE_MSG);
- asl_set(msg, ASL_KEY_LEVEL, ASL_STRING_DEBUG);
- asl_set(msg, "SecAPITrace", api);
- asl_set(msg, "ENTER", "");
- va_list args;
- va_start(args, format);
- if (format) {
- CFStringRef message = CFStringCreateWithFormatAndArguments(kCFAllocatorDefault, NULL, format, args);
- va_end(args);
- CFStringPerformWithCString(message, ^(const char *utf8Str) {
- asl_set(msg, ASL_KEY_MSG, utf8Str);
- });
- CFReleaseSafe(message);
- }
-
- {
- char stack_info[80];
-
- snprintf(stack_info, sizeof(stack_info), "C%p F%p", __builtin_return_address(1), __builtin_frame_address(2));
- asl_set(msg, "CALLER", stack_info);
- }
-
- asl_send(get_aslclient(), msg);
- asl_free(msg);
-}
-
-void __security_trace_return_api(const char *api, CFStringRef format, ...)
-{
- aslmsg msg = asl_new(ASL_TYPE_MSG);
- asl_set(msg, ASL_KEY_LEVEL, ASL_STRING_DEBUG);
- asl_set(msg, "SecAPITrace", api);
- asl_set(msg, "RETURN", "");
- va_list args;
- va_start(args, format);
- if (format) {
- CFStringRef message = CFStringCreateWithFormatAndArguments(kCFAllocatorDefault, NULL, format, args);
- va_end(args);
- CFStringPerformWithCString(message, ^(const char *utf8Str) {
- asl_set(msg, ASL_KEY_MSG, utf8Str);
- });
- CFReleaseSafe(message);
- }
- asl_send(get_aslclient(), msg);
- asl_free(msg);
-}
-
-
-void add_security_log_hanlder(security_log_handler handler)
-{
- CFArrayAppendValue(get_log_handlers(), handler);
-}
-
-static void __security_log_msg(const char *level, CFStringRef scope, const char *function,
- const char *file, int line, CFStringRef message)
-{
-
- CFArrayForEach(get_log_handlers(), ^(const void *value) {
- security_log_handler handler = (security_log_handler) value;
-
- handler(level, scope, function, file, line, message);
- });
-}
-
-void __security_debug(CFStringRef scope, const char *function,
- const char *file, int line, CFStringRef format, ...)
-{
-#if !defined(NDEBUG)
- pthread_once(&__security_debug_once, __security_debug_init);
-
- /* Check if scope is enabled. */
- if (scope && ((scopeSet && negate == CFSetContainsValue(scopeSet, scope)) ||
- (!scopeSet && !negate)))
- return;
-#endif
-
- va_list args;
- va_start(args, format);
- CFStringRef message = CFStringCreateWithFormatAndArguments(
- kCFAllocatorDefault, NULL, format, args);
- va_end(args);
-
- /* DEBUG scopes are logged as notice when enabled. */
- __security_log_msg(ASL_STRING_NOTICE, scope, function, file, line, message);
- CFRelease(message);
-}
-
-void __security_log(const char *level, CFStringRef scope, const char *function,
- const char *file, int line, CFStringRef format, ...)
-{
- va_list args;
- va_start(args, format);
- CFStringRef message = CFStringCreateWithFormatAndArguments(
- kCFAllocatorDefault, NULL, format, args);
- va_end(args);
- __security_log_msg(level, scope, function, file, line, message);
- CFRelease(message);
-}
-
-static void __security_simulatecrash_link(CFStringRef reason, uint32_t code)
-{
-#if !TARGET_IPHONE_SIMULATOR
- // Prototype defined in <CrashReporterSupport/CrashReporterSupport.h>, but objC only.
- // Soft linking here so we don't link unless we hit this.
- static BOOL (*__SimulateCrash)(pid_t pid, mach_exception_data_type_t exceptionCode, CFStringRef description);
-
- static dispatch_once_t once = 0;
- dispatch_once(&once, ^{
- void *image = dlopen("/System/Library/PrivateFrameworks/CrashReporterSupport.framework/CrashReporterSupport", RTLD_NOW);
- if (image)
- __SimulateCrash = dlsym(image, "SimulateCrash");
- else
- __SimulateCrash = NULL;
- });
-
- if (__SimulateCrash)
- __SimulateCrash(getpid(), code, reason);
- else
- secerror("SimulateCrash not available");
-#else
- secerror("SimulateCrash not available in iOS simulator");
-#endif
-}
-
-
-void __security_simulatecrash(CFStringRef reason, uint32_t code)
-{
- secerror("Simulating crash, reason: %@, code=%08x", reason, code);
- __security_simulatecrash_link(reason, code);
-}
projects / apple / security.git / blobdiff