Security-55163.44.tar.gz

[apple/security.git] / libsecurity_keychain / lib / debuggingP.c

diff --git a/libsecurity_keychain/lib/debuggingP.c b/libsecurity_keychain/lib/debuggingP.c
new file mode 100644 (file)
index 0000000..34ca70d
--- /dev/null
+++ b/libsecurity_keychain/lib/debuggingP.c
@@ -0,0 +1,151 @@
+/*
+ * 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 <security_utilities/debugging.h>
+#include <CoreFoundation/CFSet.h>
+#include <CoreFoundation/CFString.h>
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <pthread.h>
+#include <asl.h>
+
+#if !defined(NDEBUG)
+#define MAX_SCOPE_LENGTH  12
+
+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
+
+void __security_debug(const char *scope, const char *function,
+    const char *file, int line, const char *format, ...)
+{
+#if !defined(NDEBUG)
+       pthread_once(&__security_debug_once, __security_debug_init);
+
+       CFStringRef scopeName = NULL;
+       /* Scope NULL is always enabled. */
+       if (scope) {
+               /* Check if the scope is enabled. */
+               if (scopeSet) {
+                       scopeName = copyScopeName(scope, strlen(scope));
+                       if (negate == CFSetContainsValue(scopeSet, scopeName)) {
+                               CFRelease(scopeName);
+                               return;
+                       }
+               } else if (!negate) {
+                       return;
+               }
+       }
+
+       CFStringRef formatStr = CFStringCreateWithCString(kCFAllocatorDefault,
+               format, kCFStringEncodingUTF8);
+       va_list args;
+       va_start(args, format);
+       CFStringRef message = CFStringCreateWithFormatAndArguments(
+               kCFAllocatorDefault, NULL, formatStr, args);
+       va_end(args);
+       time_t now = time(NULL);
+       char *date = ctime(&now);
+       date[19] = '\0';
+       CFStringRef logStr = CFStringCreateWithFormat(kCFAllocatorDefault, NULL,
+               CFSTR("%s %-*s %s %@\n"), date + 4, MAX_SCOPE_LENGTH - 1,
+        scope ? scope : "", function, message);
+       CFShow(logStr);
+    char logMsg[4096];
+    if (CFStringGetCString(logStr, logMsg, sizeof(logMsg), kCFStringEncodingUTF8)) {
+#if 0
+        asl_log(NULL, NULL, ASL_LEVEL_INFO, logMsg);
+#else
+        aslmsg msg = asl_new(ASL_TYPE_MSG);
+        if (scope) {
+            asl_set(msg, ASL_KEY_FACILITY, scope);
+        }
+        asl_set(msg, ASL_KEY_LEVEL, ASL_STRING_INFO);
+        asl_set(msg, ASL_KEY_MSG, logMsg);
+        asl_send(NULL, msg);
+        asl_free(msg);
+#endif
+    }
+       CFRelease(logStr);
+       CFRelease(message);
+       CFRelease(formatStr);
+       if (scopeName)
+               CFRelease(scopeName);
+#endif
+}