Support x509 certificate on iOS.

net/base/x509_util_nss.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_BASE_X509_UTIL_NSS_H_
 #define NET_BASE_X509_UTIL_NSS_H_
 
 #include <string>
+#include <vector>
 
 #include "base/time.h"
+#include "net/base/x509_certificate.h"
+
+class PickleIterator;
 
 typedef struct CERTCertificateStr CERTCertificate;
+typedef struct CERTNameStr CERTName;
 typedef struct SECKEYPrivateKeyStr SECKEYPrivateKey;
+typedef struct SECItemStr SECItem;
 typedef struct SECKEYPublicKeyStr SECKEYPublicKey;
 
-
 namespace net {
 
 namespace x509_util {
 
 // Creates a self-signed certificate containing |public_key|.  Subject, serial
 // number and validity period are given as parameters.  The certificate is
 // signed by |private_key|. The hashing algorithm for the signature is SHA-1.
 // |subject| is a distinguished name defined in RFC4514.
 CERTCertificate* CreateSelfSignedCert(
     SECKEYPublicKey* public_key,
     SECKEYPrivateKey* private_key,
     const std::string& subject,
     uint32 serial_number,
     base::Time not_valid_before,
     base::Time not_valid_after);
 
+// Parses the Principal attribute from |name| and outputs the result in
+// |principal|.
+void ParsePrincipal(CERTName* name,
+                    CertPrincipal* principal);
+
+// Parses the date from |der_date| and outputs the result in |result|.
+void ParseDate(const SECItem* der_date, base::Time* result);
+
+// Parses the serial number from |certificate|.
+std::string ParseSerialNumber(const CERTCertificate* certificate);
+
+// Gets the subjectAltName extension field from the certificate, if any.
+void GetSubjectAltName(CERTCertificate* cert_handle,
+                       std::vector<std::string>* dns_names,
+                       std::vector<std::string>* ip_addrs);
+
+// Creates all possible OS certificate handles from |data| encoded in a specific
+// |format|. Returns an empty collection on failure.
+X509Certificate::OSCertHandles CreateOSCertHandlesFromBytes(
+    const char* data,
+    int length,
+    X509Certificate::Format format);
+
+// Reads a single certificate from |pickle_iter| and returns a platform-specific
+// certificate handle. Returns an invalid handle, NULL, on failure.
+X509Certificate::OSCertHandle ReadOSCertHandleFromPickle(
+    PickleIterator* pickle_iter);
+
+// Sets |*size_bits| to be the length of the public key in bits, and sets
+// |*type| to one of the |PublicKeyType| values. In case of
+// |kPublicKeyTypeUnknown|, |*size_bits| will be set to 0.
+void GetPublicKeyInfo(CERTCertificate* handle,
+                      size_t* size_bits,
+                      X509Certificate::PublicKeyType* type);
+
 } // namespace x509_util
 
 } // namespace net
 
 #endif  // NET_BASE_X509_UTIL_NSS_H_