Security-59306.61.1.tar.gz

[apple/security.git] / OSX / libsecurity_cms / lib / CMSDecoder.cpp

diff --git a/OSX/libsecurity_cms/lib/CMSDecoder.cpp b/OSX/libsecurity_cms/lib/CMSDecoder.cpp
index bcf4e5d6c7df4c8c037d545152e4246db3a8c3e8..9fe2ecb96ab264ba535dfc11a8f914ee98dbdc6f 100644 (file)
--- a/OSX/libsecurity_cms/lib/CMSDecoder.cpp
+++ b/OSX/libsecurity_cms/lib/CMSDecoder.cpp
@@ -25,8 +25,8 @@
  * CMSDecoder.cpp - Interface for decoding CMS messages.
  */
 
-#include "CMSDecoder.h"
-#include "CMSPrivate.h"
+#include <Security/CMSDecoder.h>
+#include <Security/CMSPrivate.h>
 #include "CMSUtils.h"
 #include <../libsecurity_codesigning/lib/csutilities.h>
 
@@ -42,6 +42,7 @@
 #include <Security/oidsattr.h>
 #include <Security/SecTrustPriv.h>
 #include <CoreFoundation/CFRuntime.h>
+#include <utilities/SecCFWrappers.h>
 #include <pthread.h>
 #include <syslog.h>
 #include <AssertMacros.h>
@@ -311,7 +312,9 @@ OSStatus CMSDecoderFinalizeMessage(
                 (SecCmsSignedDataRef)SecCmsContentInfoGetContent(ci);
                                /* dig down one more layer for eContentType */
                                ci = SecCmsSignedDataGetContentInfo(cmsDecoder->signedData);
-                               cmsDecoder->eContentType = SecCmsContentInfoGetContentTypeOID(ci);
+                               if (ci) {
+                                       cmsDecoder->eContentType = SecCmsContentInfoGetContentTypeOID(ci);
+                               }
                                break;
                        default:
                                break;
@@ -426,7 +429,7 @@ OSStatus CMSDecoderCopySignerStatus(
                                     SecTrustRef                        *secTrust,                              /* optional; RETURNED */
                                     OSStatus                   *certVerifyResultCode)  /* optional; RETURNED */
 {
-       if((cmsDecoder == NULL) || (cmsDecoder->decState != DS_Final) || (!policyOrArray)) {
+       if((cmsDecoder == NULL) || (cmsDecoder->decState != DS_Final) || (!policyOrArray) || !signerStatus) {
                return errSecParam;
        }
        
@@ -492,8 +495,7 @@ OSStatus CMSDecoderCopySignerStatus(
        if(secTrust != NULL) {
                *secTrust = theTrust;
                /* we'll release our reference at the end */
-               if (theTrust)
-                       CFRetain(theTrust);
+               CFRetainSafe(theTrust);
        }
        SecCmsSignerInfoRef signerInfo =
     SecCmsSignedDataGetSignerInfo(cmsDecoder->signedData, (int)signerIndex);
@@ -1072,3 +1074,42 @@ exit:
     }
     return status;
 }
+
+/*
+ * Obtain the expiration time of signer 'signerIndex' of a CMS message, if
+ * present. This is part of the signed attributes of the message.
+ *
+ * Returns errSecParam if the CMS message was not signed or if signerIndex
+ * is greater than the number of signers of the message minus one.
+ *
+ * This cannot be called until after CMSDecoderFinalizeMessage() is called.
+ */
+OSStatus CMSDecoderCopySignerAppleExpirationTime(
+    CMSDecoderRef      cmsDecoder,
+    size_t             signerIndex,
+    CFAbsoluteTime     *expirationTime)            /* RETURNED */
+{
+    OSStatus status = errSecParam;
+    SecCmsMessageRef cmsg = NULL;
+    int numContentInfos  = 0;
+    SecCmsSignedDataRef signedData = NULL;
+
+    require(cmsDecoder && expirationTime, xit);
+    require_noerr(CMSDecoderGetCmsMessage(cmsDecoder, &cmsg), xit);
+    numContentInfos = SecCmsMessageContentLevelCount(cmsg);
+    for (int dex = 0; !signedData && dex < numContentInfos; dex++) {
+        SecCmsContentInfoRef ci = SecCmsMessageContentLevel(cmsg, dex);
+        SECOidTag tag = SecCmsContentInfoGetContentTypeTag(ci);
+        if (tag == SEC_OID_PKCS7_SIGNED_DATA) {
+            if ((signedData = (SecCmsSignedDataRef)SecCmsContentInfoGetContent(ci))) {
+                SecCmsSignerInfoRef signerInfo = SecCmsSignedDataGetSignerInfo(signedData, (int)signerIndex);
+                if (signerInfo) {
+                    status = SecCmsSignerInfoGetAppleExpirationTime(signerInfo, expirationTime);
+                    break;
+                }
+            }
+        }
+    }
+xit:
+    return status;
+}