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#ifndef _OAUTH2_NGINX_H_
#define _OAUTH2_NGINX_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 <ngx_core.h>
#include <ngx_http.h>
#include <ngx_http_request.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <oauth2/http.h>
#include <oauth2/log.h>
#include <oauth2/util.h>
// module
#define OAUTH2_NGINX_MODULE(module) \
extern ngx_module_t ngx_##module##_module; \
\
ngx_module_t *ngx_modules[] = {&ngx_##module##_module, NULL}; \
\
char *ngx_module_names[] = {OAUTH2_TOSTRING(ngx_##module##_module), \
NULL}; \
\
char *ngx_module_order[] = {NULL};
// functions
#define OAUTH2_NGINX_CFG_FUNC_START(module, type, primitive) \
static char *ngx_##module##_set_##primitive( \
ngx_conf_t *cf, ngx_command_t *cmd, void *conf) \
{ \
const char *rv = NULL; \
type *cfg = (type *)conf; \
ngx_str_t *value = cf->args->elts;
// fprintf(stderr, " ## %s: %p (log=%p)\n", __FUNCTION__, cfg, cf->log);
#define OAUTH2_NGINX_CFG_FUNC_END(cf, rv) \
if (rv) \
ngx_log_error(NGX_LOG_ERR, cf->log, 0, rv); \
return rv ? NGX_CONF_ERROR : NGX_CONF_OK; \
}
#define OAUTH2_NGINX_CFG_FUNC_RET1(module, type, primitive, func, member) \
OAUTH2_NGINX_CFG_FUNC_START(module, type, primitive) \
(void)value; \
rv = func(cf, &cfg->member); \
OAUTH2_NGINX_CFG_FUNC_END(cf, rv)
#define OAUTH2_NGINX_CFG_FUNC_ARGS1(module, type, primitive, func, member) \
OAUTH2_NGINX_CFG_FUNC_START(module, type, primitive) \
char *v1 = cf->args->nelts > 1 \
? oauth2_strndup((const char *)value[1].data, \
(size_t)value[1].len) \
: NULL; \
rv = func(cfg->log, member, v1); \
oauth2_mem_free(v1); \
OAUTH2_NGINX_CFG_FUNC_END(cf, rv)
#define OAUTH2_NGINX_CFG_FUNC_ARGS2(module, type, primitive, func, member) \
OAUTH2_NGINX_CFG_FUNC_START(module, type, primitive) \
char *v1 = cf->args->nelts > 1 \
? oauth2_strndup((const char *)value[1].data, \
(size_t)value[1].len) \
: NULL; \
char *v2 = cf->args->nelts > 2 \
? oauth2_strndup((const char *)value[2].data, \
(size_t)value[2].len) \
: NULL; \
rv = func(cfg->log, member, v1, v2); \
oauth2_mem_free(v2); \
oauth2_mem_free(v1); \
OAUTH2_NGINX_CFG_FUNC_END(cf, rv)
#define OAUTH2_NGINX_CFG_FUNC_ARGS3(module, type, primitive, func, member) \
OAUTH2_NGINX_CFG_FUNC_START(module, type, primitive) \
char *v1 = cf->args->nelts > 1 \
? oauth2_strndup((const char *)value[1].data, \
(size_t)value[1].len) \
: NULL; \
char *v2 = cf->args->nelts > 2 \
? oauth2_strndup((const char *)value[2].data, \
(size_t)value[2].len) \
: NULL; \
char *v3 = cf->args->nelts > 3 \
? oauth2_strndup((const char *)value[3].data, \
(size_t)value[3].len) \
: NULL; \
rv = func(cfg->log, member, v1, v2, v3); \
oauth2_mem_free(v3); \
oauth2_mem_free(v2); \
oauth2_mem_free(v1); \
OAUTH2_NGINX_CFG_FUNC_END(cf, rv)
#define OAUTH2_NGINX_CFG_FUNC_ARGS4(module, type, primitive, func, member) \
OAUTH2_NGINX_CFG_FUNC_START(module, type, primitive) \
char *v1 = cf->args->nelts > 1 \
? oauth2_strndup((const char *)value[1].data, \
(size_t)value[1].len) \
: NULL; \
char *v2 = cf->args->nelts > 2 \
? oauth2_strndup((const char *)value[2].data, \
(size_t)value[2].len) \
: NULL; \
char *v3 = cf->args->nelts > 3 \
? oauth2_strndup((const char *)value[3].data, \
(size_t)value[3].len) \
: NULL; \
char *v4 = cf->args->nelts > 4 \
? oauth2_strndup((const char *)value[3].data, \
(size_t)value[4].len) \
: NULL; \
rv = func(cfg->log, member, v1, v2, v3, v4); \
oauth2_mem_free(v4); \
oauth2_mem_free(v3); \
oauth2_mem_free(v2); \
oauth2_mem_free(v1); \
OAUTH2_NGINX_CFG_FUNC_END(cf, rv)
// commands
// clang-format off
#define OAUTH2_NGINX_CMD(take, module, directive, primitive) \
{ \
ngx_string(directive), \
NGX_HTTP_LOC_CONF | NGX_HTTP_LIF_CONF | \
NGX_CONF_TAKE##take, \
ngx_##module##_set_##primitive, NGX_HTTP_LOC_CONF_OFFSET, \
0, NULL \
}
// clang-format on
// logging
void oauth2_nginx_log(oauth2_log_sink_t *sink, const char *filename,
unsigned long line, const char *function,
oauth2_log_level_t level, const char *msg);
// requests
typedef struct oauth2_nginx_request_context_t {
oauth2_log_t *log;
ngx_http_request_t *r;
oauth2_http_request_t *request;
} oauth2_nginx_request_context_t;
oauth2_nginx_request_context_t *
oauth2_nginx_request_context_init(ngx_http_request_t *r);
void oauth2_nginx_request_context_free(void *rec);
ngx_int_t oauth2_nginx_http_response_set(oauth2_log_t *log,
oauth2_http_response_t *response,
ngx_http_request_t *r);
//
char *oauth2_nginx_str2chr(ngx_pool_t *p, const ngx_str_t *str);
#define OAUTH2_NGINX_CMD_SET_IMPL(module, primitive) \
static ngx_int_t ngx_##module##_##primitive##_variable( \
ngx_http_request_t *r, ngx_http_variable_value_t *v, \
uintptr_t data) \
{ \
return oauth2_nginx_##primitive##_variable( \
ngx_##module##_module, r, v, data); \
} \
\
static char *ngx_##module##_set_##primitive( \
ngx_conf_t *cf, ngx_command_t *cmd, void *conf) \
{ \
return oauth2_nginx_set_##primitive( \
ngx_##module##_module, \
ngx_##module##_##primitive##_variable, cf, cmd, conf); \
}
ngx_int_t oauth2_nginx_claim_variable(ngx_module_t module,
ngx_http_request_t *r,
ngx_http_variable_value_t *v,
uintptr_t data);
char *oauth2_nginx_set_claim(ngx_module_t module,
ngx_http_get_variable_pt handler, ngx_conf_t *cf,
ngx_command_t *cmd, void *conf);
ngx_int_t oauth2_nginx_set_target_variables(ngx_module_t module,
oauth2_nginx_request_context_t *ctx,
json_t *json_token);
char *nginx_oauth2_set_require(ngx_conf_t *cf, ngx_array_t **requirements);
ngx_int_t nginx_oauth2_check_requirements(oauth2_nginx_request_context_t *ctx,
ngx_array_t *requirements);
#endif /* _OAUTH2_NGINX_H_ */
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