Add "extern C {...} to header files for C++ builds.

[freeradius.git] / src / include / sha1.h

diff --git a/src/include/sha1.h b/src/include/sha1.h
index c3cec0c..0a431a8 100644 (file)
--- a/src/include/sha1.h
+++ b/src/include/sha1.h
@@ -1,16 +1,15 @@
 #ifndef _FR_SHA1_H
 #define _FR_SHA1_H
 
-/*
- *  FreeRADIUS defines to ensure globally unique SHA1 function names,
- *  so that we don't pick up vendor-specific broken SHA1 libraries.
- */
-#define fr_SHA1_CTX            fr_SHA1_CTX
-#define fr_SHA1Transform               fr_SHA1Transform
-#define fr_SHA1Init            fr_SHA1Init
-#define fr_SHA1Update          fr_SHA1Update
-#define fr_SHA1Final           fr_SHA1Final
+#ifdef WITH_OPENSSL_SHA1
+#include <openssl/sha.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
+#ifndef WITH_OPENSSL_SHA1
 typedef struct {
     uint32_t state[5];
     uint32_t count[2];
@@ -25,13 +24,30 @@ void fr_SHA1Final(uint8_t digest[20], fr_SHA1_CTX* context);
 /*
  * this version implements a raw SHA1 transform, no length is appended,
  * nor any 128s out to the block size.
+ *
+ *     Hmm... this function doesn't appear to be used anywhere.
  */
-void fr_fr_SHA1FinalNoLen(uint8_t digest[20], fr_SHA1_CTX* context);
+void fr_SHA1FinalNoLen(uint8_t digest[20], fr_SHA1_CTX* context);
+
+#else  /* WITH_OPENSSL_SHA1 */
+
+#define fr_SHA1_CTX    SHA_CTX
+#define fr_SHA1Init    SHA1_Init
+#define fr_SHA1Update  SHA1_Update
+#define fr_SHA1Final   SHA1_Final
+#define fr_SHA1Transform SHA1_Transform
+#endif
 
 /*
  * FIPS 186-2 PRF based upon SHA1.
+ *
+ *     Hmm... this is only used in src/modules/rlm_eap/libeap/
+ *     why is the prototype here?
  */
 extern void fips186_2prf(uint8_t mk[20], uint8_t finalkey[160]);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* _FR_SHA1_H */