--- /dev/null
+/*
+ * Copyright (c) 2009 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@
+ */
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreFoundation/CFRuntime.h>
+#include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacErrors.h>
+
+#include <IOKit/IOKitLib.h>
+#include <IOKit/IOCFUnserialize.h>
+
+#include <System/sys/codesign.h>
+
+#include <pthread.h>
+
+#include <bsm/libbsm.h>
+
+#include "SecTask.h"
+
+struct __SecTask {
+ CFRuntimeBase base;
+
+ pid_t pid;
+
+ /* Track whether we've loaded entitlements independently since after the
+ * load, entitlements may legitimately be NULL */
+ Boolean entitlementsLoaded;
+ CFDictionaryRef entitlements;
+};
+
+enum {
+ kSecCodeMagicEntitlement = 0xfade7171, /* entitlement blob */
+};
+
+
+CFTypeID _kSecTaskTypeID = _kCFRuntimeNotATypeID;
+
+static void SecTaskFinalize(CFTypeRef cfTask)
+{
+ SecTaskRef task = (SecTaskRef) cfTask;
+
+ if (task->entitlements != NULL) {
+ CFRelease(task->entitlements);
+ task->entitlements = NULL;
+ }
+}
+
+static CFStringRef SecTaskCopyDebugDescription(CFTypeRef cfTask)
+{
+ SecTaskRef task = (SecTaskRef) cfTask;
+
+ return CFStringCreateWithFormat(CFGetAllocator(task), NULL, CFSTR("<SecTask %p>"), task);
+}
+
+static void SecTaskRegisterClass(void)
+{
+ static const CFRuntimeClass SecTaskClass = {
+ .version = 0,
+ .className = "SecTask",
+ .init = NULL,
+ .copy = NULL,
+ .finalize = SecTaskFinalize,
+ .equal = NULL,
+ .hash = NULL,
+ .copyFormattingDesc = NULL,
+ .copyDebugDesc = SecTaskCopyDebugDescription,
+ };
+
+ _kSecTaskTypeID = _CFRuntimeRegisterClass(&SecTaskClass);
+}
+
+CFTypeID SecTaskGetTypeID(void)
+{
+ static pthread_once_t secTaskRegisterClassOnce = PTHREAD_ONCE_INIT;
+
+ /* Register the class with the CF runtime the first time through */
+ pthread_once(&secTaskRegisterClassOnce, SecTaskRegisterClass);
+
+ return _kSecTaskTypeID;
+}
+
+static SecTaskRef SecTaskCreateWithPID(CFAllocatorRef allocator, pid_t pid)
+{
+ CFIndex extra = sizeof(struct __SecTask) - sizeof(CFRuntimeBase);
+ SecTaskRef task = (SecTaskRef) _CFRuntimeCreateInstance(allocator, SecTaskGetTypeID(), extra, NULL);
+ if (task != NULL) {
+ task->pid = pid;
+ task->entitlementsLoaded = false;
+ task->entitlements = NULL;
+ }
+
+ return task;
+
+}
+
+SecTaskRef SecTaskCreateWithAuditToken(CFAllocatorRef allocator, audit_token_t token)
+{
+ pid_t pid;
+
+ audit_token_to_au32(token,
+ /* auidp */ NULL,
+ /* euidp */ NULL,
+ /* egidp */ NULL,
+ /* ruidp */ NULL,
+ /* rgidp */ NULL,
+ /* pidp */ &pid,
+ /* asidp */ NULL,
+ /* tidp */ NULL);
+ return SecTaskCreateWithPID(allocator, pid);
+}
+
+SecTaskRef SecTaskCreateFromSelf(CFAllocatorRef allocator)
+{
+ return SecTaskCreateWithPID(allocator, getpid());
+}
+
+static CFRange myMakeRange(CFIndex loc, CFIndex len) {
+ CFRange r = {.location = loc, .length = len };
+ return r;
+}
+struct csheader {
+ uint32_t magic;
+ uint32_t length;
+};
+
+static int SecTaskLoadEntitlements(SecTaskRef task, CFErrorRef *error)
+{
+ CFMutableDataRef data = NULL;
+ struct csheader header;
+ uint32_t bufferlen;
+ int ret;
+
+ ret = csops(task->pid, CS_OPS_ENTITLEMENTS_BLOB, &header, sizeof(header));
+ if (ret != -1 || errno != ERANGE) {
+ /* no entitlements */
+ task->entitlementsLoaded = true;
+ return 0;
+ }
+
+ bufferlen = ntohl(header.length);
+ /* check for insane values */
+ if (bufferlen > 1024 * 1024 || bufferlen < 8) {
+ ret = EINVAL;
+ goto out;
+ }
+ data = CFDataCreateMutable(NULL, bufferlen);
+ if (data == NULL) {
+ ret = ENOMEM;
+ goto out;
+ }
+ CFDataSetLength(data, bufferlen);
+ ret = csops(task->pid, CS_OPS_ENTITLEMENTS_BLOB, CFDataGetMutableBytePtr(data), bufferlen);
+ if (ret) {
+ ret = errno;
+ goto out;
+ }
+ CFDataDeleteBytes(data, myMakeRange(0, 8));
+ task->entitlements = CFPropertyListCreateWithData(NULL, data, 0, NULL, error);
+ task->entitlementsLoaded = true;
+ out:
+ if (data)
+ CFRelease(data);
+ if (ret && error)
+ *error = CFErrorCreate(NULL, kCFErrorDomainMach, ret, NULL);
+
+ return ret;
+}
+
+CFTypeRef SecTaskCopyValueForEntitlement(SecTaskRef task, CFStringRef entitlement, CFErrorRef *error)
+{
+ /* Load entitlements if necessary */
+ if (task->entitlementsLoaded == false) {
+ SecTaskLoadEntitlements(task, error);
+ }
+
+ CFTypeRef value = NULL;
+ if (task->entitlements != NULL) {
+ value = CFDictionaryGetValue(task->entitlements, entitlement);
+
+ /* Return something the caller must release */
+ if (value != NULL) {
+ CFRetain(value);
+ }
+ }
+
+ return value;
+}
+
+CFDictionaryRef SecTaskCopyValuesForEntitlements(SecTaskRef task, CFArrayRef entitlements, CFErrorRef *error)
+{
+ /* Load entitlements if necessary */
+ if (task->entitlementsLoaded == false) {
+ SecTaskLoadEntitlements(task, error);
+ }
+
+ /* Iterate over the passed in entitlements, populating the dictionary
+ * If entitlements were loaded but none were present, return an empty
+ * dictionary */
+ CFMutableDictionaryRef values = NULL;
+ if (task->entitlementsLoaded == true) {
+
+ CFIndex i, count = CFArrayGetCount(entitlements);
+ values = CFDictionaryCreateMutable(CFGetAllocator(task), count, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
+ if (task->entitlements != NULL) {
+ for (i = 0; i < count; i++) {
+ CFStringRef entitlement = CFArrayGetValueAtIndex(entitlements, i);
+ CFTypeRef value = CFDictionaryGetValue(task->entitlements, entitlement);
+ if (value != NULL) {
+ CFDictionarySetValue(values, entitlement, value);
+ }
+ }
+ }
+ }
+
+ return values;
+}
projects / apple / security.git / blobdiff