[Core] Fix DTLS Peer Certificate verification

diff --git a/src/include/switch_core.h b/src/include/switch_core.h
index ff04fa0954c03814b7470f93cbc4d300d4642e32..f72cbc7880c0e4d956f0cd33e38b36a643226854 100644 (file)
--- a/src/include/switch_core.h
+++ b/src/include/switch_core.h
@@ -147,7 +147,7 @@ typedef void(*switch_device_state_function_t)(switch_core_session_t *session, sw
 
 #define DTLS_SRTP_FNAME "dtls-srtp"
 #define MAX_FPLEN 64
-#define MAX_FPSTRLEN 192
+#define MAX_FPSTRLEN 193
 
 typedef struct dtls_fp_s {
        uint32_t len;

diff --git a/src/switch_rtp.c b/src/switch_rtp.c
index 20fba2720a88e55b744494122666c6a6bc95d41c..d038566d90b4861809875d1a273fb096e96779e9 100644 (file)
--- a/src/switch_rtp.c
+++ b/src/switch_rtp.c
@@ -3233,8 +3233,13 @@ static int dtls_state_setup(switch_rtp_t *rtp_session, switch_dtls_t *dtls)
        if ((dtls->type & DTLS_TYPE_SERVER)) {
                r = 1;
        } else if ((cert = SSL_get_peer_certificate(dtls->ssl))) {
-               switch_core_cert_extract_fingerprint(cert, dtls->remote_fp);
-               r = switch_core_cert_verify(dtls->remote_fp);
+               dtls_fingerprint_t fp = {0};
+
+               fp.type = dtls->remote_fp->type;
+
+               switch_core_cert_extract_fingerprint(cert, &fp);
+               r = (!zstr(fp.str) && !strncasecmp(fp.str, dtls->remote_fp->str, MAX_FPSTRLEN));
+
                X509_free(cert);
        }
 
@@ -3446,9 +3451,12 @@ static int cb_verify_peer(int preverify_ok, X509_STORE_CTX *ctx)
        }
 
        if ((cert = SSL_get_peer_certificate(dtls->ssl))) {
-               switch_core_cert_extract_fingerprint(cert, dtls->remote_fp);
+               dtls_fingerprint_t fp = {0};
 
-               r = switch_core_cert_verify(dtls->remote_fp);
+               fp.type = dtls->remote_fp->type;
+
+               switch_core_cert_extract_fingerprint(cert, &fp);
+               r = (!zstr(fp.str) && !strncasecmp(fp.str, dtls->remote_fp->str, MAX_FPSTRLEN));
 
                X509_free(cert);
        } else {
@@ -4019,8 +4027,6 @@ SWITCH_DECLARE(switch_status_t) switch_rtp_add_dtls(switch_rtp_t *rtp_session, d
        }
        
        BIO_ctrl(dtls->filter_bio, BIO_CTRL_DGRAM_SET_MTU, dtls->mtu, NULL);
-       
-       switch_core_cert_expand_fingerprint(remote_fp, remote_fp->str);
 
        if ((type & DTLS_TYPE_RTP)) {
                rtp_session->dtls = dtls;