fix some warnings

1 files changed, 7 insertions, 16 deletions

diff --git a/dl3.c b/dl3.c
index 2467932..ebc412b 100644
--- a/dl3.c
+++ b/dl3.c
@@ -34,9 +34,9 @@ struct hdcp_session_info {
 	EVP_CIPHER_CTX aes_ctx; /* ctx for cipher */
 	uint8_t kd[KD_SIZE];
 	uint8_t edkey_ks[16];
-	uint8_t *rtx;
-	uint8_t *km;
-	uint8_t *ks;
+	const uint8_t *rtx;
+	const uint8_t *km;
+	const uint8_t *ks;
 };
 static int VID = 0x17e9;
 static int PID = 0x4301;
@@ -163,12 +163,7 @@ static void calculate_kd(struct hdcp_session_info *info)
 
 static void calculate_edkey_ks(struct hdcp_session_info *info)
 {
-	unsigned char input[] = {NULL_BYTES, NULL_BYTES};
-	uint8_t iv[16];
 	uint8_t *buf = info->edkey_ks;
-	int ret;
-	int outl;
-	uint8_t tmp[100];
 	int i;
 
 	calc_kd_ctr(info, 2, buf);
@@ -194,7 +189,6 @@ static int calculate_h(struct hdcp_session_info *info)
 	HMAC_CTX ctx;
 	unsigned char res[200];
 	unsigned int resLen;
-	int i;
 	uint8_t input[8];
 
 	memcpy(input, info->rtx, 8);
@@ -266,7 +260,7 @@ static int verify_cert(const uint8_t *start)
 	ctx = EVP_PKEY_CTX_new(pRsaKey, NULL);
 	if (EVP_PKEY_verify_init(ctx) <= 0) {
 		printf("fail 1\n");
-		return;
+		return -1;
 	}
 #if 1
 	mdctx = EVP_MD_CTX_create();
@@ -397,10 +391,6 @@ static void decode_l_prime(struct hdcp_session_info *info,
 static void decode_rx(struct hdcp_session_info *info,
 		      const uint8_t *buf, int len)
 {
-	/**/
-	int msglen = buf[2] | (buf[3] << 8);
-	int midlen;
-
 	if (buf[0] != 0 || buf[1] != 0)
 		return;
 
@@ -473,10 +463,10 @@ static int block_read_usb(libusb_device_handle *handle, int endpoint_in,
 static int send_buffer(libusb_device_handle *handle, int endpoint_out, int endpoint_in)
 {
 	unsigned char buf[1024];
-	int r, i = 0;
+	int r;
 	int size;
 	int len2, len;
-	gcry_sexp_t pub_key, km, result;
+	gcry_sexp_t km, result;
 	struct hdcp_session_info info;
 
 	memset(&info, 0, sizeof(info));
@@ -662,4 +652,5 @@ int main(int argc, char** argv)
 
 	libusb_exit(NULL);
 #endif
+	return 0;
 }