setopt: add TLS 1.3 ciphersuites

Adds CURLOPT_TLS13_CIPHERS and CURLOPT_PROXY_TLS13_CIPHERS.

curl: added --tls13-ciphers and --proxy-tls13-ciphers

Fixes #2435
Reported-by: zzq1015 on github
Closes #2607

1 files changed, 19 insertions, 0 deletions

diff --git a/lib/setopt.c b/lib/setopt.c
index c1f6bd97e..93a4dd2b5 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -142,6 +142,25 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option,
                             va_arg(param, char *));
     break;
 
+  case CURLOPT_TLS13_CIPHERS:
+    if(Curl_ssl_tls13_ciphersuites()) {
+      /* set preferred list of TLS 1.3 cipher suites */
+      result = Curl_setstropt(&data->set.str[STRING_SSL_CIPHER13_LIST_ORIG],
+                              va_arg(param, char *));
+    }
+    else
+      return CURLE_NOT_BUILT_IN;
+    break;
+  case CURLOPT_PROXY_TLS13_CIPHERS:
+    if(Curl_ssl_tls13_ciphersuites()) {
+      /* set preferred list of TLS 1.3 cipher suites for proxy */
+      result = Curl_setstropt(&data->set.str[STRING_SSL_CIPHER13_LIST_PROXY],
+                              va_arg(param, char *));
+    }
+    else
+      return CURLE_NOT_BUILT_IN;
+    break;
+
   case CURLOPT_RANDOM_FILE:
     /*
      * This is the path name to a file that contains random data to seed