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[mod_authn_gssapi] option to store delegated creds (fixes #2967) 

default enabled for backwards compatibility; disable in future

(thx lameventanas)

x-ref:
  "mod_authn_gssapi requires delegation?"
  https://redmine.lighttpd.net/issues/2967
personal/stbuehler/ci-build
Glenn Strauss 2019-09-07 17:59:21 -04:00
parent e9440ecfdf
commit 3390642285
1 changed files with 11 additions and 1 deletions
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12
src/mod_authn_gssapi.c
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@ -41,6 +41,7 @@
typedef struct {
buffer *auth_gssapi_keytab;
buffer *auth_gssapi_principal;
unsigned short int auth_gssapi_store_creds;
} plugin_config;
typedef struct {
@ -101,6 +102,7 @@ SETDEFAULTS_FUNC(mod_authn_gssapi_set_defaults) {
config_values_t cv[] = {
{ "auth.backend.gssapi.keytab", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION },
{ "auth.backend.gssapi.principal", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION },
{ "auth.backend.gssapi.store-creds",NULL, T_CONFIG_BOOLEAN,T_CONFIG_SCOPE_CONNECTION },
{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
};
@ -117,6 +119,9 @@ SETDEFAULTS_FUNC(mod_authn_gssapi_set_defaults) {
cv[0].destination = s->auth_gssapi_keytab;
cv[1].destination = s->auth_gssapi_principal;
cv[2].destination = &s->auth_gssapi_store_creds;
/* default enabled for backwards compatibility; disable in future */
s->auth_gssapi_store_creds = 1;
p->config_storage[i] = s;
@ -137,6 +142,7 @@ static int mod_authn_gssapi_patch_connection(server *srv, connection *con, plugi
PATCH(auth_gssapi_keytab);
PATCH(auth_gssapi_principal);
PATCH(auth_gssapi_store_creds);
/* skip the first, the global context */
for (i = 1; i < srv->config_context->used; i++) {
@ -154,6 +160,8 @@ static int mod_authn_gssapi_patch_connection(server *srv, connection *con, plugi
PATCH(auth_gssapi_keytab);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.gssapi.principal"))) {
PATCH(auth_gssapi_principal);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.gssapi.store-creds"))) {
PATCH(auth_gssapi_store_creds);
}
}
}
@ -433,7 +441,7 @@ static handler_t mod_authn_gssapi_check_spnego(server *srv, connection *con, plu
goto end;
}
{
if (p->conf.auth_gssapi_store_creds) {
if (!(acc_flags & GSS_C_DELEG_FLAG)) {
log_error_write(srv, __FILE__, __LINE__, "ss", "Unable to delegate credentials for user:", token_out.value);
goto end;
@ -731,6 +739,8 @@ static handler_t mod_authn_gssapi_basic(server *srv, connection *con, void *p_d,
goto end;
}
if (!p->conf.auth_gssapi_store_creds) goto end;
ret = krb5_cc_resolve(kcontext, "MEMORY:", &ret_ccache);
if (ret) {
mod_authn_gssapi_log_krb5_error(srv, __FILE__, __LINE__, "krb5_cc_resolve", NULL, kcontext, ret);