libgo/go/crypto/x509/root_cgo_darwin.go

   1 // Copyright 2011 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // +build cgo
   6
   7 package x509
   8
   9 /*
  10 #cgo CFLAGS: -mmacosx-version-min=10.6 -D__MAC_OS_X_VERSION_MAX_ALLOWED=1060
  11 #cgo LDFLAGS: -framework CoreFoundation -framework Security
  12
  13 #include <CoreFoundation/CoreFoundation.h>
  14 #include <Security/Security.h>
  15
  16 // FetchPEMRoots fetches the system's list of trusted X.509 root certificates.
  17 //
  18 // On success it returns 0 and fills pemRoots with a CFDataRef that contains the extracted root
  19 // certificates of the system. On failure, the function returns -1.
  20 //
  21 // Note: The CFDataRef returned in pemRoots must be released (using CFRelease) after
  22 // we've consumed its content.
  23 int FetchPEMRoots(CFDataRef *pemRoots) {
  24         if (pemRoots == NULL) {
  25                 return -1;
  26         }
  27
  28         CFArrayRef certs = NULL;
  29         OSStatus err = SecTrustCopyAnchorCertificates(&certs);
  30         if (err != noErr) {
  31                 return -1;
  32         }
  33
  34         CFMutableDataRef combinedData = CFDataCreateMutable(kCFAllocatorDefault, 0);
  35         int i, ncerts = CFArrayGetCount(certs);
  36         for (i = 0; i < ncerts; i++) {
  37                 CFDataRef data = NULL;
  38                 SecCertificateRef cert = (SecCertificateRef)CFArrayGetValueAtIndex(certs, i);
  39                 if (cert == NULL) {
  40                         continue;
  41                 }
  42
  43                 // Note: SecKeychainItemExport is deprecated as of 10.7 in favor of SecItemExport.
  44                 // Once we support weak imports via cgo we should prefer that, and fall back to this
  45                 // for older systems.
  46                 err = SecKeychainItemExport(cert, kSecFormatX509Cert, kSecItemPemArmour, NULL, &data);
  47                 if (err != noErr) {
  48                         continue;
  49                 }
  50
  51                 if (data != NULL) {
  52                         CFDataAppendBytes(combinedData, CFDataGetBytePtr(data), CFDataGetLength(data));
  53                         CFRelease(data);
  54                 }
  55         }
  56
  57         CFRelease(certs);
  58
  59         *pemRoots = combinedData;
  60         return 0;
  61 }
  62 */
  63 import "C"
  64 import "unsafe"
  65
  66 func initSystemRoots() {
  67         roots := NewCertPool()
  68
  69         var data C.CFDataRef = nil
  70         err := C.FetchPEMRoots(&data)
  71         if err == -1 {
  72                 return
  73         }
  74
  75         defer C.CFRelease(C.CFTypeRef(data))
  76         buf := C.GoBytes(unsafe.Pointer(C.CFDataGetBytePtr(data)), C.int(C.CFDataGetLength(data)))
  77         roots.AppendCertsFromPEM(buf)
  78         systemRoots = roots
  79 }