minimize the scope of `params`
diff --git a/lib/openssl.c b/lib/openssl.c
index 05959f2..e210477 100644
--- a/lib/openssl.c
+++ b/lib/openssl.c
@@ -1218,7 +1218,6 @@
static int verify_cert_chain(X509_STORE *store, X509 *cert, STACK_OF(X509) * chain, int is_server, const char *server_name)
{
X509_STORE_CTX *verify_ctx;
- X509_VERIFY_PARAM *params;
int ret;
assert(server_name != NULL && "ptls_set_server_name MUST be called");
@@ -1228,30 +1227,31 @@
ret = PTLS_ERROR_NO_MEMORY;
goto Exit;
}
- if ((params = X509_VERIFY_PARAM_new()) == NULL) {
- ret = PTLS_ERROR_NO_MEMORY;
- goto Exit;
- }
if (X509_STORE_CTX_init(verify_ctx, store, cert, chain) != 1) {
ret = PTLS_ERROR_LIBRARY;
goto Exit;
}
- X509_VERIFY_PARAM_set_purpose(params, is_server ? X509_PURPOSE_SSL_SERVER : X509_PURPOSE_SSL_CLIENT);
- X509_VERIFY_PARAM_set_depth(params, 1);
-
- if (server_name != NULL) {
- if (ptls_server_name_is_ipaddr(server_name)) {
- X509_VERIFY_PARAM_set1_ip_asc(params, server_name);
+ {
+ X509_VERIFY_PARAM *params;
+ if ((params = X509_VERIFY_PARAM_new()) == NULL) {
+ ret = PTLS_ERROR_NO_MEMORY;
+ goto Exit;
}
- else {
- X509_VERIFY_PARAM_set1_host(params, server_name, 0);
- X509_VERIFY_PARAM_set_hostflags(params, X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS);
- }
+ X509_VERIFY_PARAM_set_purpose(params, is_server ? X509_PURPOSE_SSL_SERVER : X509_PURPOSE_SSL_CLIENT);
+ X509_VERIFY_PARAM_set_depth(params, 1);
+ if (server_name != NULL) {
+ if (ptls_server_name_is_ipaddr(server_name)) {
+ X509_VERIFY_PARAM_set1_ip_asc(params, server_name);
+ }
+ else {
+ X509_VERIFY_PARAM_set1_host(params, server_name, 0);
+ X509_VERIFY_PARAM_set_hostflags(params, X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS);
+ }
+ }
+ X509_STORE_CTX_set0_param(verify_ctx, params); /* params will be freed alongside verify_ctx */
}
- X509_STORE_CTX_set0_param(verify_ctx, params);
-
if (X509_verify_cert(verify_ctx) != 1) {
int x509_err = X509_STORE_CTX_get_error(verify_ctx);
switch (x509_err) {
@@ -1285,10 +1285,8 @@
ret = 0;
Exit:
- // X509_VERIFY_PARAM *params is freed by the store
if (verify_ctx != NULL)
X509_STORE_CTX_free(verify_ctx);
-
return ret;
}