void call_func()
{
call_once(of, init_count);
}
inline void call_once(void (*func)(),once_flag& flag)
{
call_once(flag,func);
}
/**
* Once per rd_kafka_t handle initialization of OpenSSL
*
* Locality: application thread
*
* NOTE: rd_kafka_wrlock() MUST be held
*/
int rd_kafka_transport_ssl_ctx_init (rd_kafka_t *rk,
char *errstr, size_t errstr_size) {
int r;
SSL_CTX *ctx;
call_once(&rd_kafka_ssl_init_once, rd_kafka_transport_ssl_init);
ctx = SSL_CTX_new(SSLv23_client_method());
if (!ctx)
goto fail;
/* Key file password callback */
SSL_CTX_set_default_passwd_cb(ctx, rd_kafka_transport_ssl_passwd_cb);
SSL_CTX_set_default_passwd_cb_userdata(ctx, rk);
/* Ciphers */
if (rk->rk_conf.ssl.cipher_suites) {
rd_kafka_dbg(rk, SECURITY, "SSL",
"Setting cipher list: %s",
rk->rk_conf.ssl.cipher_suites);
if (!SSL_CTX_set_cipher_list(ctx,
rk->rk_conf.ssl.cipher_suites)) {
rd_snprintf(errstr, errstr_size,
"No recognized ciphers");
goto fail;
}
}
if (rk->rk_conf.ssl.ca_location) {
/* CA certificate location, either file or directory. */
int is_dir = rd_kafka_path_is_dir(rk->rk_conf.ssl.ca_location);
rd_kafka_dbg(rk, SECURITY, "SSL",
"Loading CA certificate(s) from %s %s",
is_dir ? "directory":"file",
rk->rk_conf.ssl.ca_location);
r = SSL_CTX_load_verify_locations(ctx,
!is_dir ?
rk->rk_conf.ssl.
ca_location : NULL,
is_dir ?
rk->rk_conf.ssl.
ca_location : NULL);
if (r != 1)
goto fail;
}
if (rk->rk_conf.ssl.crl_location) {
rd_kafka_dbg(rk, SECURITY, "SSL",
"Loading CRL from file %s",
rk->rk_conf.ssl.crl_location);
r = SSL_CTX_load_verify_locations(ctx,
rk->rk_conf.ssl.crl_location,
NULL);
if (r != 1)
goto fail;
rd_kafka_dbg(rk, SECURITY, "SSL",
"Enabling CRL checks");
X509_STORE_set_flags(SSL_CTX_get_cert_store(ctx),
X509_V_FLAG_CRL_CHECK);
}
if (rk->rk_conf.ssl.cert_location) {
rd_kafka_dbg(rk, SECURITY, "SSL",
"Loading certificate from file %s",
rk->rk_conf.ssl.cert_location);
r = SSL_CTX_use_certificate_chain_file(ctx,
rk->rk_conf.ssl.cert_location);
if (r != 1)
goto fail;
}
if (rk->rk_conf.ssl.key_location) {
rd_kafka_dbg(rk, SECURITY, "SSL",
"Loading private key file from %s",
rk->rk_conf.ssl.key_location);
r = SSL_CTX_use_PrivateKey_file(ctx,
rk->rk_conf.ssl.key_location,
SSL_FILETYPE_PEM);
if (r != 1)
goto fail;
}
SSL_CTX_set_mode(ctx, SSL_MODE_ENABLE_PARTIAL_WRITE);
rk->rk_conf.ssl.ctx = ctx;
return 0;
fail:
rd_kafka_ssl_error(rk, NULL, errstr, errstr_size);
SSL_CTX_free(ctx);
return -1;
}