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-rw-r--r--apps/s_cb.c105
1 files changed, 104 insertions, 1 deletions
diff --git a/apps/s_cb.c b/apps/s_cb.c
index a512589e8c87..97caffc4012c 100644
--- a/apps/s_cb.c
+++ b/apps/s_cb.c
@@ -117,12 +117,17 @@
#undef NON_MAIN
#undef USE_SOCKETS
#include <openssl/err.h>
+#include <openssl/rand.h>
#include <openssl/x509.h>
#include <openssl/ssl.h>
#include "s_apps.h"
+#define COOKIE_SECRET_LENGTH 16
+
int verify_depth=0;
int verify_error=X509_V_OK;
+unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
+int cookie_initialized=0;
int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
{
@@ -338,6 +343,12 @@ void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *
break;
default:
str_version = "???";
+ case DTLS1_VERSION:
+ str_version = "DTLS 1.0 ";
+ break;
+ case DTLS1_BAD_VER:
+ str_version = "DTLS 1.0 (bad) ";
+ break;
}
if (version == SSL2_VERSION)
@@ -401,7 +412,10 @@ void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *
}
}
- if (version == SSL3_VERSION || version == TLS1_VERSION)
+ if (version == SSL3_VERSION ||
+ version == TLS1_VERSION ||
+ version == DTLS1_VERSION ||
+ version == DTLS1_BAD_VER)
{
switch (content_type)
{
@@ -540,6 +554,9 @@ void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *
case 15:
str_details1 = ", CertificateVerify";
break;
+ case 3:
+ str_details1 = ", HelloVerifyRequest";
+ break;
case 16:
str_details1 = ", ClientKeyExchange";
break;
@@ -621,6 +638,9 @@ void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
extname = "server ticket";
break;
+ case TLSEXT_TYPE_renegotiate:
+ extname = "renegotiate";
+ break;
default:
extname = "unknown";
@@ -634,3 +654,86 @@ void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
BIO_dump(bio, (char *)data, len);
(void)BIO_flush(bio);
}
+
+int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
+ {
+ unsigned char *buffer, result[EVP_MAX_MD_SIZE];
+ unsigned int length, resultlength;
+ struct sockaddr_in peer;
+
+ /* Initialize a random secret */
+ if (!cookie_initialized)
+ {
+ if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
+ {
+ BIO_printf(bio_err,"error setting random cookie secret\n");
+ return 0;
+ }
+ cookie_initialized = 1;
+ }
+
+ /* Read peer information */
+ (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
+
+ /* Create buffer with peer's address and port */
+ length = sizeof(peer.sin_addr);
+ length += sizeof(peer.sin_port);
+ buffer = OPENSSL_malloc(length);
+
+ if (buffer == NULL)
+ {
+ BIO_printf(bio_err,"out of memory\n");
+ return 0;
+ }
+
+ memcpy(buffer, &peer.sin_addr, sizeof(peer.sin_addr));
+ memcpy(buffer + sizeof(peer.sin_addr), &peer.sin_port, sizeof(peer.sin_port));
+
+ /* Calculate HMAC of buffer using the secret */
+ HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
+ buffer, length, result, &resultlength);
+ OPENSSL_free(buffer);
+
+ memcpy(cookie, result, resultlength);
+ *cookie_len = resultlength;
+
+ return 1;
+ }
+
+int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
+ {
+ unsigned char *buffer, result[EVP_MAX_MD_SIZE];
+ unsigned int length, resultlength;
+ struct sockaddr_in peer;
+
+ /* If secret isn't initialized yet, the cookie can't be valid */
+ if (!cookie_initialized)
+ return 0;
+
+ /* Read peer information */
+ (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
+
+ /* Create buffer with peer's address and port */
+ length = sizeof(peer.sin_addr);
+ length += sizeof(peer.sin_port);
+ buffer = (unsigned char*) OPENSSL_malloc(length);
+
+ if (buffer == NULL)
+ {
+ BIO_printf(bio_err,"out of memory\n");
+ return 0;
+ }
+
+ memcpy(buffer, &peer.sin_addr, sizeof(peer.sin_addr));
+ memcpy(buffer + sizeof(peer.sin_addr), &peer.sin_port, sizeof(peer.sin_port));
+
+ /* Calculate HMAC of buffer using the secret */
+ HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
+ buffer, length, result, &resultlength);
+ OPENSSL_free(buffer);
+
+ if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
+ return 1;
+
+ return 0;
+ }