forked from acouzens/open5gs
577 lines
17 KiB
C
577 lines
17 KiB
C
/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "ogs-sbi.h"
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#include "sbi-private.h"
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static OGS_POOL(request_pool, ogs_sbi_request_t);
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static OGS_POOL(response_pool, ogs_sbi_response_t);
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void ogs_sbi_message_init(int num_of_request_pool, int num_of_response_pool)
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{
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ogs_pool_init(&request_pool, num_of_request_pool);
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ogs_pool_init(&response_pool, num_of_response_pool);
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}
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void ogs_sbi_message_final(void)
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{
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ogs_pool_final(&request_pool);
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ogs_pool_final(&response_pool);
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}
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void ogs_sbi_message_free(ogs_sbi_message_t *message)
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{
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ogs_assert(message);
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if (message->NFProfile)
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OpenAPI_nf_profile_free(message->NFProfile);
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if (message->ProblemDetails)
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OpenAPI_problem_details_free(message->ProblemDetails);
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if (message->PatchItemList) {
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OpenAPI_lnode_t *node = NULL;
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OpenAPI_list_for_each(message->PatchItemList, node)
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OpenAPI_patch_item_free(node->data);
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OpenAPI_list_free(message->PatchItemList);
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}
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if (message->SubscriptionData)
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OpenAPI_subscription_data_free(message->SubscriptionData);
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if (message->NotificationData)
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OpenAPI_notification_data_free(message->NotificationData);
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if (message->SearchResult)
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OpenAPI_search_result_free(message->SearchResult);
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}
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ogs_sbi_request_t *ogs_sbi_request_new(void)
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{
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ogs_sbi_request_t *request = NULL;
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ogs_pool_alloc(&request_pool, &request);
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ogs_assert(request);
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memset(request, 0, sizeof(ogs_sbi_request_t));
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request->http.params = ogs_hash_make();
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request->http.headers = ogs_hash_make();
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return request;
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}
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ogs_sbi_response_t *ogs_sbi_response_new(void)
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{
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ogs_sbi_response_t *response = NULL;
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ogs_pool_alloc(&response_pool, &response);
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ogs_assert(response);
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memset(response, 0, sizeof(ogs_sbi_response_t));
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response->http.params = ogs_hash_make();
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response->http.headers = ogs_hash_make();
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return response;
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}
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static void sbi_header_free(ogs_sbi_header_t *h);
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static void http_message_free(http_message_t *http);
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void ogs_sbi_request_free(ogs_sbi_request_t *request)
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{
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ogs_assert(request);
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if (request->h.url)
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ogs_free(request->h.url);
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sbi_header_free(&request->h);
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http_message_free(&request->http);
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ogs_pool_free(&request_pool, request);
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}
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void ogs_sbi_response_free(ogs_sbi_response_t *response)
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{
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ogs_assert(response);
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if (response->h.url)
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ogs_free(response->h.url);
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sbi_header_free(&response->h);
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http_message_free(&response->http);
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ogs_pool_free(&response_pool, response);
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}
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static void sbi_header_free(ogs_sbi_header_t *h)
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{
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ogs_assert(h);
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if (h->method) ogs_free(h->method);
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if (h->service.name) ogs_free(h->service.name);
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if (h->api.version) ogs_free(h->api.version);
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if (h->resource.name) ogs_free(h->resource.name);
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if (h->resource.id) ogs_free(h->resource.id);
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}
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static void http_message_free(http_message_t *http)
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{
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ogs_assert(http);
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if (http->params) {
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ogs_hash_index_t *hi;
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for (hi = ogs_hash_first(http->params); hi; hi = ogs_hash_next(hi)) {
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char *val = ogs_hash_this_val(hi);
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ogs_free(val);
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}
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ogs_hash_destroy(http->params);
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}
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if (http->headers) {
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ogs_hash_index_t *hi;
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for (hi = ogs_hash_first(http->headers); hi; hi = ogs_hash_next(hi)) {
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char *val = ogs_hash_this_val(hi);
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ogs_free(val);
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}
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ogs_hash_destroy(http->headers);
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}
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if (http->content) ogs_free(http->content);
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}
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static char *build_content(ogs_sbi_message_t *message);
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ogs_sbi_request_t *ogs_sbi_build_request(ogs_sbi_message_t *message)
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{
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ogs_sbi_request_t *request = NULL;
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ogs_assert(message);
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request = ogs_sbi_request_new();
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ogs_assert(request);
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ogs_assert(message->h.method);
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request->h.method = ogs_strdup(message->h.method);
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if (message->h.url) {
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request->h.url = ogs_strdup(message->h.url);
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} else {
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ogs_assert(message->h.service.name);
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request->h.service.name = ogs_strdup(message->h.service.name);
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ogs_assert(message->h.api.version);
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request->h.api.version = ogs_strdup(message->h.api.version);
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ogs_assert(message->h.resource.name);
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request->h.resource.name = ogs_strdup(message->h.resource.name);
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if (message->h.resource.id)
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request->h.resource.id = ogs_strdup(message->h.resource.id);
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}
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/* URL Param */
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if (message->param.nf_type) {
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char *v = OpenAPI_nf_type_ToString(message->param.nf_type);
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ogs_assert(v);
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ogs_sbi_header_set(request->http.params, OGS_SBI_PARAM_NF_TYPE, v);
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}
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if (message->param.requester_nf_type) {
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char *v = OpenAPI_nf_type_ToString(message->param.requester_nf_type);
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ogs_assert(v);
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ogs_sbi_header_set(request->http.params,
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OGS_SBI_PARAM_REQUESTER_NF_TYPE, v);
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}
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if (message->param.target_nf_type) {
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char *v = OpenAPI_nf_type_ToString(message->param.target_nf_type);
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ogs_assert(v);
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ogs_sbi_header_set(request->http.params,
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OGS_SBI_PARAM_TARGET_NF_TYPE, v);
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}
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if (message->param.limit) {
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char *v = ogs_msprintf("%d", message->param.limit);
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ogs_assert(v);
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ogs_sbi_header_set(request->http.params, OGS_SBI_PARAM_LIMIT, v);
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}
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/* HTTP Message */
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request->http.content = build_content(message);
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if (request->http.content) {
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if (message->http.content_type)
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ogs_sbi_header_set(request->http.headers,
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OGS_SBI_CONTENT_TYPE, message->http.content_type);
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else
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ogs_sbi_header_set(request->http.headers,
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OGS_SBI_CONTENT_TYPE, OGS_SBI_CONTENT_JSON_TYPE);
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}
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if (message->http.content_encoding)
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ogs_sbi_header_set(request->http.headers,
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OGS_SBI_ACCEPT_ENCODING, message->http.content_encoding);
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return request;
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}
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ogs_sbi_response_t *ogs_sbi_build_response(ogs_sbi_message_t *message)
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{
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ogs_sbi_response_t *response = NULL;
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ogs_assert(message);
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response = ogs_sbi_response_new();
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ogs_assert(response);
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/* HTTP Message */
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response->http.content = build_content(message);
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if (response->http.content) {
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if (message->http.content_type)
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ogs_sbi_header_set(response->http.headers,
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OGS_SBI_CONTENT_TYPE, message->http.content_type);
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else
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ogs_sbi_header_set(response->http.headers,
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OGS_SBI_CONTENT_TYPE, OGS_SBI_CONTENT_JSON_TYPE);
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}
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if (message->http.location == true)
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ogs_sbi_header_set(response->http.headers, "Location", message->h.url);
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if (message->http.cache_control)
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ogs_sbi_header_set(response->http.headers, "Cache-Control",
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message->http.cache_control);
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return response;
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}
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static char *build_content(ogs_sbi_message_t *message)
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{
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char *content = NULL;
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cJSON *item = NULL;
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ogs_assert(message);
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if (message->ProblemDetails) {
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item = OpenAPI_problem_details_convertToJSON(message->ProblemDetails);
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ogs_assert(item);
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} else if (message->NFProfile) {
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item = OpenAPI_nf_profile_convertToJSON(message->NFProfile);
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ogs_assert(item);
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} else if (message->PatchItemList) {
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OpenAPI_lnode_t *node = NULL;
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item = cJSON_CreateArray();
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ogs_assert(item);
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OpenAPI_list_for_each(message->PatchItemList, node) {
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cJSON *patchItem = OpenAPI_patch_item_convertToJSON(node->data);
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ogs_assert(patchItem);
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cJSON_AddItemToArray(item, patchItem);
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}
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} else if (message->SubscriptionData) {
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item = OpenAPI_subscription_data_convertToJSON(
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message->SubscriptionData);
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ogs_assert(item);
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} else if (message->NotificationData) {
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item = OpenAPI_notification_data_convertToJSON(
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message->NotificationData);
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ogs_assert(item);
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} else if (message->SearchResult) {
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item = OpenAPI_search_result_convertToJSON(message->SearchResult);
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ogs_assert(item);
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} else if (message->links) {
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item = ogs_sbi_links_convertToJSON(message->links);
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ogs_assert(item);
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}
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if (item) {
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content = cJSON_Print(item);
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ogs_assert(content);
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cJSON_Delete(item);
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}
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return content;
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}
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static int parse_sbi_header(
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ogs_sbi_message_t *message, ogs_sbi_header_t *header);
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static int parse_content(ogs_sbi_message_t *message, char *content);
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int ogs_sbi_parse_request(
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ogs_sbi_message_t *message, ogs_sbi_request_t *request)
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{
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int rv;
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ogs_hash_index_t *hi;
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ogs_assert(request);
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ogs_assert(message);
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rv = parse_sbi_header(message, &request->h);
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if (rv != OGS_OK) {
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ogs_error("sbi_parse_header() failed");
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return OGS_ERROR;
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}
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for (hi = ogs_hash_first(request->http.params);
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hi; hi = ogs_hash_next(hi)) {
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if (!strcmp(ogs_hash_this_key(hi), OGS_SBI_PARAM_NF_TYPE)) {
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message->param.nf_type =
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OpenAPI_nf_type_FromString(ogs_hash_this_val(hi));
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} else if (!strcmp(ogs_hash_this_key(hi),
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OGS_SBI_PARAM_TARGET_NF_TYPE)) {
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message->param.target_nf_type =
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OpenAPI_nf_type_FromString(ogs_hash_this_val(hi));
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} else if (!strcmp(ogs_hash_this_key(hi),
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OGS_SBI_PARAM_REQUESTER_NF_TYPE)) {
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message->param.requester_nf_type =
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OpenAPI_nf_type_FromString(ogs_hash_this_val(hi));
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} else if (!strcmp(ogs_hash_this_key(hi),
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OGS_SBI_PARAM_LIMIT)) {
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message->param.limit = atoi(ogs_hash_this_val(hi));
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}
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}
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for (hi = ogs_hash_first(request->http.headers);
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hi; hi = ogs_hash_next(hi)) {
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if (!strcmp(ogs_hash_this_key(hi), OGS_SBI_ACCEPT_ENCODING)) {
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message->http.content_encoding = ogs_hash_this_val(hi);
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} else if (!strcmp(ogs_hash_this_key(hi), OGS_SBI_CONTENT_TYPE)) {
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message->http.content_type = ogs_hash_this_val(hi);
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}
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}
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if (parse_content(message, request->http.content) != OGS_OK) {
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ogs_error("parse_content() failed");
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return OGS_ERROR;
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}
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return OGS_OK;
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}
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int ogs_sbi_parse_response(
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ogs_sbi_message_t *message, ogs_sbi_response_t *response)
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{
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int rv;
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ogs_hash_index_t *hi;
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ogs_assert(response);
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ogs_assert(message);
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rv = parse_sbi_header(message, &response->h);
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if (rv != OGS_OK) {
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ogs_error("sbi_parse_header() failed");
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return OGS_ERROR;
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}
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for (hi = ogs_hash_first(response->http.headers);
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hi; hi = ogs_hash_next(hi)) {
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if (!strcmp(ogs_hash_this_key(hi), OGS_SBI_CONTENT_TYPE)) {
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message->http.content_type = ogs_hash_this_val(hi);
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}
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}
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if (parse_content(message, response->http.content) != OGS_OK) {
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ogs_error("parse_content() failed");
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return OGS_ERROR;
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}
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message->res_status = response->status;
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return OGS_OK;
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}
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static int parse_sbi_header(
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ogs_sbi_message_t *message, ogs_sbi_header_t *header)
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{
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struct yuarel yuarel;
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char *saveptr = NULL;
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char *url = NULL, *p = NULL;;
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ogs_assert(message);
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ogs_assert(header);
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memset(message, 0, sizeof(*message));
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message->h.method = header->method;
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ogs_assert(message->h.method);
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message->h.url = header->url;
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ogs_assert(message->h.url);
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url = ogs_strdup(header->url);
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ogs_assert(url);
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p = url;
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if (p[0] != '/') {
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int rv = yuarel_parse(&yuarel, p);
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if (rv != OGS_OK) {
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ogs_error("yuarel_parse() failed");
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ogs_free(url);
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return OGS_ERROR;
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}
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p = yuarel.path;
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}
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header->service.name = ogs_sbi_parse_url(p, "/", &saveptr);
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if (!header->service.name) {
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ogs_error("ogs_sbi_parse_url() failed");
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ogs_free(url);
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return OGS_ERROR;
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}
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message->h.service.name = header->service.name;
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header->api.version = ogs_sbi_parse_url(NULL, "/", &saveptr);
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if (!header->api.version) {
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ogs_error("ogs_sbi_parse_url() failed");
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ogs_free(url);
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return OGS_ERROR;
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}
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message->h.api.version = header->api.version;
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header->resource.name = ogs_sbi_parse_url(NULL, "/", &saveptr);
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if (!header->resource.name) {
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ogs_error("ogs_sbi_parse_url() failed");
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ogs_free(url);
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return OGS_ERROR;
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}
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message->h.resource.name = header->resource.name;
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header->resource.id = ogs_sbi_parse_url(NULL, "/", &saveptr);
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message->h.resource.id = header->resource.id;
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ogs_free(url);
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return OGS_OK;
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}
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static int parse_content(ogs_sbi_message_t *message, char *content)
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{
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int rv = OGS_OK;
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cJSON *item = NULL;
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ogs_assert(message);
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if (!content)
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return OGS_OK;
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if (strcmp(message->h.api.version, OGS_SBI_API_VERSION) != 0) {
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ogs_error("Not supported version - %s", message->h.api.version);
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return OGS_ERROR;
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}
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item = cJSON_Parse(content);
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if (!item) {
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ogs_error("JSON parse error");
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return OGS_ERROR;
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}
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if (message->http.content_type) {
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if (!strncmp(message->http.content_type,
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OGS_SBI_CONTENT_PROBLEM_TYPE,
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strlen(OGS_SBI_CONTENT_PROBLEM_TYPE))) {
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message->ProblemDetails =
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OpenAPI_problem_details_parseFromJSON(item);
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} else if (!strncmp(message->http.content_type,
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OGS_SBI_CONTENT_PATCH_TYPE,
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strlen(OGS_SBI_CONTENT_PATCH_TYPE))) {
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if (item) {
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OpenAPI_patch_item_t *patch_item = NULL;
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cJSON *patchJSON = NULL;
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message->PatchItemList = OpenAPI_list_create();
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cJSON_ArrayForEach(patchJSON, item) {
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if (!cJSON_IsObject(patchJSON)) {
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rv = OGS_ERROR;
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ogs_error("Unknown JSON");
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goto cleanup;
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}
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patch_item = OpenAPI_patch_item_parseFromJSON(patchJSON);
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OpenAPI_list_add(message->PatchItemList, patch_item);
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}
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}
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} else {
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SWITCH(message->h.service.name)
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CASE(OGS_SBI_SERVICE_NAME_NRF_NFM)
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|
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SWITCH(message->h.resource.name)
|
|
CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
|
|
message->NFProfile =
|
|
OpenAPI_nf_profile_parseFromJSON(item);
|
|
if (!message->NFProfile) {
|
|
rv = OGS_ERROR;
|
|
ogs_error("JSON parse error");
|
|
}
|
|
break;
|
|
|
|
CASE(OGS_SBI_RESOURCE_NAME_SUBSCRIPTIONS)
|
|
message->SubscriptionData =
|
|
OpenAPI_subscription_data_parseFromJSON(item);
|
|
if (!message->SubscriptionData) {
|
|
rv = OGS_ERROR;
|
|
ogs_error("JSON parse error");
|
|
}
|
|
break;
|
|
|
|
CASE(OGS_SBI_RESOURCE_NAME_NF_STATUS_NOTIFY)
|
|
message->NotificationData =
|
|
OpenAPI_notification_data_parseFromJSON(item);
|
|
if (!message->NotificationData) {
|
|
rv = OGS_ERROR;
|
|
ogs_error("JSON parse error");
|
|
}
|
|
break;
|
|
|
|
DEFAULT
|
|
rv = OGS_ERROR;
|
|
ogs_error("Unknown resource name [%s]",
|
|
message->h.resource.name);
|
|
END
|
|
break;
|
|
|
|
CASE(OGS_SBI_SERVICE_NAME_NRF_DISC)
|
|
SWITCH(message->h.resource.name)
|
|
CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
|
|
message->SearchResult =
|
|
OpenAPI_search_result_parseFromJSON(item);
|
|
if (!message->SearchResult) {
|
|
rv = OGS_ERROR;
|
|
ogs_error("JSON parse error");
|
|
}
|
|
break;
|
|
|
|
DEFAULT
|
|
rv = OGS_ERROR;
|
|
ogs_error("Unknown resource name [%s]",
|
|
message->h.resource.name);
|
|
END
|
|
break;
|
|
|
|
DEFAULT
|
|
rv = OGS_ERROR;
|
|
ogs_error("Not implemented API name [%s]",
|
|
message->h.service.name);
|
|
END
|
|
}
|
|
}
|
|
|
|
cleanup:
|
|
|
|
cJSON_Delete(item);
|
|
return rv;
|
|
}
|
|
|
|
void ogs_sbi_header_set(ogs_hash_t *ht, const void *key, const void *val)
|
|
{
|
|
ogs_hash_set(ht, key, strlen(key), ogs_strdup(val));
|
|
}
|
|
|
|
void *ogs_sbi_header_get(ogs_hash_t *ht, const void *key)
|
|
{
|
|
return ogs_hash_get(ht, key, strlen(key));
|
|
}
|
|
|