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#ifndef _OAUTH2_APACHE_H_
#define _OAUTH2_APACHE_H_
/***************************************************************************
*
* Copyright (C) 2018-2025 - ZmartZone Holding BV
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @Author: Hans Zandbelt - hans.zandbelt@openidc.com
*
**************************************************************************/
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <oauth2/http.h>
#include <oauth2/log.h>
#include <oauth2/util.h>
#include <oauth2/version.h>
// avoid errors about ap_auto_config overriding these, so undefine first
#undef PACKAGE_BUGREPORT
#undef PACKAGE_NAME
#undef PACKAGE_STRING
#undef PACKAGE_TARNAME
#undef PACKAGE_VERSION
#include <httpd.h>
#include <http_config.h>
#include <http_log.h>
#include <mod_auth.h>
extern oauth2_cfg_server_callback_funcs_t oauth2_apache_server_callback_funcs;
/*
* logging
*/
extern oauth2_uint_t log_level_log2apache[];
extern oauth2_uint_t log_level_apache2oauth2[];
#ifndef APLOG_USE_MODULE
#define APLOG_USE_MODULE(foo) \
extern module AP_MODULE_DECLARE_DATA foo##_module; \
AP_MAYBE_UNUSED(static int *const aplog_module_index) = \
&(foo##_module.module_index)
#endif
#define OAUTH2_APACHE_LOG(foo) \
\
APLOG_USE_MODULE(foo); \
\
static void foo##_log_server( \
oauth2_log_sink_t *sink, const char *filename, unsigned long line, \
const char *function, oauth2_log_level_t level, const char *msg) \
{ \
ap_log_error( \
filename, line, \
aplog_module_index ? *aplog_module_index \
: APLOG_NO_MODULE, \
log_level_log2apache[level], 0, \
(const server_rec *)oauth2_log_sink_ctx_get(sink), \
"%s: %s", function, msg); \
} \
\
static void foo##_log_request( \
oauth2_log_sink_t *sink, const char *filename, unsigned long line, \
const char *function, oauth2_log_level_t level, const char *msg) \
{ \
ap_log_rerror( \
filename, line, \
aplog_module_index ? *aplog_module_index \
: APLOG_NO_MODULE, \
log_level_log2apache[level], 0, \
(const request_rec *)oauth2_log_sink_ctx_get(sink), \
"%s: %s", function, msg); \
}
/*
* parent/child cleanup
*/
apr_status_t oauth2_apache_child_cleanup(void *data, module *m,
const char *package_name_version);
#define OAUTH2_APACHE_CHILD_CLEANUP(foo) \
static apr_status_t foo##_child_cleanup(void *data) \
{ \
ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, \
(const server_rec *)data, "%s: %s", __FUNCTION__, \
"enter"); \
return oauth2_apache_child_cleanup( \
data, &foo##_module, OAUTH2_PACKAGE_NAME_VERSION); \
}
apr_status_t oauth2_apache_parent_cleanup(void *data, module *m,
const char *package_name_version);
#define OAUTH2_APACHE_PARENT_CLEANUP(foo) \
static apr_status_t foo##_parent_cleanup(void *data) \
{ \
ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, \
(const server_rec *)data, "%s: %s", __FUNCTION__, \
"enter"); \
return oauth2_apache_parent_cleanup( \
data, &foo##_module, OAUTH2_PACKAGE_NAME_VERSION); \
}
/*
* post config
*/
int oauth2_apache_post_config(apr_pool_t *pool, apr_pool_t *p1, apr_pool_t *p2,
server_rec *s, module *m,
const char *package_name_version,
apr_status_t (*parent_cleanup)(void *),
apr_status_t (*child_cleanup)(void *));
#define OAUTH2_APACHE_POST_CONFIG(foo) foo##_post_config
#define OAUTH2_APACHE_POST_CONFIG_IMPL(foo) \
static apr_status_t OAUTH2_APACHE_POST_CONFIG(foo)( \
apr_pool_t * pool, apr_pool_t * p1, apr_pool_t * p2, \
server_rec * s) \
{ \
ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, \
(const server_rec *)s, "%s: %s", __FUNCTION__, \
"enter"); \
return oauth2_apache_post_config( \
pool, p1, p2, s, &foo##_module, \
OAUTH2_PACKAGE_NAME_VERSION, foo##_parent_cleanup, \
foo##_child_cleanup); \
}
/*
* directory config
*/
#define OAUTH2_APACHE_CMD_ARGS1(module, type, primitive, func, member) \
static const char *apache_##module##_set_##primitive( \
cmd_parms *cmd, void *m, const char *v1) \
{ \
oauth2_apache_cfg_srv_t *srv_cfg = ap_get_module_config( \
cmd->server->module_config, &module##_module); \
type *cfg = (type *)m; \
(void)cfg; \
return func(srv_cfg->log, member, v1); \
}
#define OAUTH2_APACHE_CMD_ARGS2(module, type, primitive, func, member) \
static const char *apache_##module##_set_##primitive( \
cmd_parms *cmd, void *m, const char *v1, const char *v2) \
{ \
oauth2_apache_cfg_srv_t *srv_cfg = ap_get_module_config( \
cmd->server->module_config, &module##_module); \
type *cfg = (type *)m; \
(void)cfg; \
return func(srv_cfg->log, member, v1, v2); \
}
#define OAUTH2_APACHE_CMD_ARGS3(module, type, primitive, func, member) \
static const char *apache_##module##_set_##primitive( \
cmd_parms *cmd, void *m, const char *v1, const char *v2, \
const char *v3) \
{ \
oauth2_apache_cfg_srv_t *srv_cfg = ap_get_module_config( \
cmd->server->module_config, &module##_module); \
type *cfg = (type *)m; \
(void)cfg; \
return func(srv_cfg->log, member, v1, v2, v3); \
}
#define OAUTH2_APACHE_CMD_ARGSV4(module, type, primitive, func, member) \
static const char *apache_##module##_set_##primitive( \
cmd_parms *cmd, void *m, int argc, char *const argv[]) \
{ \
oauth2_apache_cfg_srv_t *srv_cfg = ap_get_module_config( \
cmd->server->module_config, &module##_module); \
type *cfg = (type *)m; \
(void)cfg; \
return func(srv_cfg->log, member, argc > 0 ? argv[0] : NULL, \
argc > 1 ? argv[1] : NULL, \
argc > 2 ? argv[2] : NULL, \
argc > 3 ? argv[3] : NULL); \
}
#define OAUTH2_APACHE_CMD_ARGS(module, nargs, cmd, member, desc) \
AP_INIT_TAKE##nargs(cmd, apache_##module##_set_##member, NULL, \
RSRC_CONF | ACCESS_CONF | OR_AUTHCFG, desc)
#define OAUTH2_APACHE_DIR_CTX(type, method) oauth2_##type##_dir_##method
#define OAUTH2_APACHE_DIR_CTX_FUNCS(type) \
apr_status_t OAUTH2_APACHE_DIR_CTX(type, cleanup)(void *data) \
{ \
oauth2_##type##_t *cfg = (oauth2_##type##_t *)data; \
oauth2_##type##_free(NULL, cfg); \
return APR_SUCCESS; \
} \
\
void *OAUTH2_APACHE_DIR_CTX(type, create)(apr_pool_t * pool, \
char *path) \
{ \
oauth2_##type##_t *cfg = oauth2_##type##_create(NULL, path); \
apr_pool_cleanup_register( \
pool, cfg, OAUTH2_APACHE_DIR_CTX(type, cleanup), \
OAUTH2_APACHE_DIR_CTX(type, cleanup)); \
return cfg; \
} \
\
static void *OAUTH2_APACHE_DIR_CTX(type, merge)(apr_pool_t * pool, \
void *b, void *a) \
{ \
oauth2_##type##_t *cfg = \
OAUTH2_APACHE_DIR_CTX(type, create)(pool, NULL); \
oauth2_##type##_t *base = b; \
oauth2_##type##_t *add = a; \
oauth2_##type##_merge(NULL, cfg, base, add); \
return cfg; \
}
/*
* server config
*/
typedef struct oauth2_apache_cfg_srv_t {
oauth2_log_sink_t *sink;
oauth2_log_t *log;
bool is_child;
} oauth2_apache_cfg_srv_t;
void *oauth2_apache_cfg_srv_create(apr_pool_t *pool, server_rec *s,
oauth2_log_function_t server_log_cb);
void *oauth2_apache_cfg_srv_merge(apr_pool_t *pool, void *b, void *a);
/*
* handlers
*/
#define OAUTH2_APACHE_HANDLERS(foo) \
OAUTH2_APACHE_CHILD_CLEANUP(foo) \
OAUTH2_APACHE_PARENT_CLEANUP(foo) \
OAUTH2_APACHE_POST_CONFIG_IMPL(foo)
/*
* module config
*/
#define OAUTH2_APACHE_COMMANDS(foo) foo##_commands
#define OAUTH2_APACHE_REGISTER_HOOKS(foo) foo##_register_hooks
#define OAUTH2_APACHE_MODULE_DECLARE_EX(foo, dir_create, dir_merge) \
\
void *oauth2_apache_##foo##_cfg_srv_create(apr_pool_t *pool, \
server_rec *s) \
{ \
return oauth2_apache_cfg_srv_create(pool, s, \
foo##_log_server); \
} \
\
module AP_MODULE_DECLARE_DATA foo##_module = { \
STANDARD20_MODULE_STUFF, \
dir_create, \
dir_merge, \
oauth2_apache_##foo##_cfg_srv_create, \
oauth2_apache_cfg_srv_merge, \
OAUTH2_APACHE_COMMANDS(foo), \
OAUTH2_APACHE_REGISTER_HOOKS(foo)};
#define OAUTH2_APACHE_MODULE_DECLARE(foo, type) \
\
OAUTH2_APACHE_DIR_CTX_FUNCS(type) \
\
OAUTH2_APACHE_MODULE_DECLARE_EX(foo, \
OAUTH2_APACHE_DIR_CTX(type, create), \
OAUTH2_APACHE_DIR_CTX(type, merge))
/*
* request context
*/
#define OAUTH2_APACHE_REQUEST_CTX(r, foo) \
oauth2_apache_request_context( \
r, foo##_log_request, \
"oauth2_" OAUTH2_TOSTRING(foo) "_module_user_data_key");
typedef struct oauth2_apache_request_ctx_t {
oauth2_log_t *log;
oauth2_http_request_t *request;
request_rec *r;
} oauth2_apache_request_ctx_t;
oauth2_apache_request_ctx_t *
oauth2_apache_request_context(request_rec *r,
oauth2_log_function_t request_log_cb,
const char *user_data_key);
/*
* misc
*/
bool oauth2_apache_http_request_set(oauth2_log_t *log,
oauth2_http_request_t *request,
request_rec *r);
int oauth2_apache_return_www_authenticate(oauth2_cfg_source_token_t *cfg,
oauth2_apache_request_ctx_t *ctx,
int status_code, const char *error,
const char *error_description);
bool oauth2_apache_request_header_set(oauth2_log_t *log, void *rec,
const char *name, const char *value);
void oauth2_apache_hdr_out_add(oauth2_log_t *log, const request_rec *r,
const char *name, const char *value);
void oauth2_apache_scrub_headers(oauth2_apache_request_ctx_t *ctx,
oauth2_cfg_target_pass_t *target_pass);
bool oauth2_apache_set_request_user(oauth2_cfg_target_pass_t *target_pass,
oauth2_apache_request_ctx_t *ctx,
json_t *json_token);
void oauth2_apache_target_pass(oauth2_apache_request_ctx_t *ctx,
oauth2_cfg_target_pass_t *target_pass,
const char *target_token, json_t *json_token);
bool oauth2_apache_http_response_set(oauth2_log_t *log,
oauth2_http_response_t *response,
request_rec *r);
void oauth2_apache_request_state_set_json(oauth2_apache_request_ctx_t *ctx,
const char *key, json_t *claims);
void oauth2_apache_request_state_get_json(oauth2_apache_request_ctx_t *ctx,
const char *key, json_t **claims);
typedef bool (*oauth2_apache_authz_match_claim_fn_type)(
oauth2_apache_request_ctx_t *, const char *const, const json_t *const);
bool oauth2_apache_authz_match_claim(oauth2_apache_request_ctx_t *ctx,
const char *const attr_spec,
const json_t *const claims);
authz_status
oauth2_apache_authorize(oauth2_apache_request_ctx_t *ctx,
const json_t *const claims, const char *require_args,
oauth2_apache_authz_match_claim_fn_type match_claim_fn);
#endif /* _OAUTH2_APACHE_H_ */
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