Make crypto loading optional

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@6797 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 17 insertions, 8 deletions

diff --git a/res/res_crypto.c b/res/res_crypto.c
index 8c5eb51b1..006238c2d 100755
--- a/res/res_crypto.c
+++ b/res/res_crypto.c
@@ -129,7 +129,7 @@ static int pw_cb(char *buf, int size, int rwflag, void *userdata)
 	return -1;
 }
 
-struct ast_key *ast_key_get(char *kname, int ktype)
+static struct ast_key *__ast_key_get(const char *kname, int ktype)
 {
 	struct ast_key *key;
 	ast_mutex_lock(&keylock);
@@ -314,7 +314,7 @@ static char *binary(int y, int len)
 
 #endif
 
-int ast_sign_bin(struct ast_key *key, char *msg, int msglen, unsigned char *dsig)
+static int __ast_sign_bin(struct ast_key *key, const char *msg, int msglen, unsigned char *dsig)
 {
 	unsigned char digest[20];
 	unsigned int siglen = 128;
@@ -345,7 +345,7 @@ int ast_sign_bin(struct ast_key *key, char *msg, int msglen, unsigned char *dsig
 	
 }
 
-extern int ast_decrypt_bin(unsigned char *dst, const unsigned char *src, int srclen, struct ast_key *key)
+static int __ast_decrypt_bin(unsigned char *dst, const unsigned char *src, int srclen, struct ast_key *key)
 {
 	int res;
 	int pos = 0;
@@ -371,7 +371,7 @@ extern int ast_decrypt_bin(unsigned char *dst, const unsigned char *src, int src
 	return pos;
 }
 
-extern int ast_encrypt_bin(unsigned char *dst, const unsigned char *src, int srclen, struct ast_key *key)
+static int __ast_encrypt_bin(unsigned char *dst, const unsigned char *src, int srclen, struct ast_key *key)
 {
 	int res;
 	int bytes;
@@ -399,7 +399,7 @@ extern int ast_encrypt_bin(unsigned char *dst, const unsigned char *src, int src
 	return pos;
 }
 
-int ast_sign(struct ast_key *key, char *msg, char *sig)
+static int __ast_sign(struct ast_key *key, char *msg, char *sig)
 {
 	unsigned char dsig[128];
 	int siglen = sizeof(dsig);
@@ -412,7 +412,7 @@ int ast_sign(struct ast_key *key, char *msg, char *sig)
 	
 }
 
-int ast_check_signature_bin(struct ast_key *key, char *msg, int msglen, unsigned char *dsig)
+static int __ast_check_signature_bin(struct ast_key *key, const char *msg, int msglen, const unsigned char *dsig)
 {
 	unsigned char digest[20];
 	int res;
@@ -428,7 +428,7 @@ int ast_check_signature_bin(struct ast_key *key, char *msg, int msglen, unsigned
 	SHA1((unsigned char *)msg, msglen, digest);
 
 	/* Verify signature */
-	res = RSA_verify(NID_sha1, digest, sizeof(digest), dsig, 128, key->rsa);
+	res = RSA_verify(NID_sha1, digest, sizeof(digest), (unsigned char *)dsig, 128, key->rsa);
 	
 	if (!res) {
 		ast_log(LOG_DEBUG, "Key failed verification: %s\n", key->name);
@@ -438,7 +438,7 @@ int ast_check_signature_bin(struct ast_key *key, char *msg, int msglen, unsigned
 	return 0;
 }
 
-int ast_check_signature(struct ast_key *key, char *msg, char *sig)
+static int __ast_check_signature(struct ast_key *key, const char *msg, const char *sig)
 {
 	unsigned char dsig[128];
 	int res;
@@ -571,6 +571,15 @@ static int crypto_init(void)
 	ERR_load_crypto_strings();
 	ast_cli_register(&cli_show_keys);
 	ast_cli_register(&cli_init_keys);
+
+	/* Install ourselves into stubs */
+	ast_key_get = __ast_key_get;
+	ast_check_signature = __ast_check_signature;
+	ast_check_signature_bin = __ast_check_signature_bin;
+	ast_sign = __ast_sign;
+	ast_sign_bin = __ast_sign_bin;
+	ast_encrypt_bin = __ast_encrypt_bin;
+	ast_decrypt_bin = __ast_decrypt_bin;
 	return 0;
 }