forked from acouzens/open5gs
193 lines
5.0 KiB
C
193 lines
5.0 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 char *ogs_uridup(bool https, ogs_sockaddr_t *addr,
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const char *service_name, const char *api_version,
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const char *resource_name, const char *resource_id)
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{
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char buf[OGS_ADDRSTRLEN];
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char url[OGS_HUGE_LEN];
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char *p, *last;
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ogs_assert(addr);
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ogs_assert(service_name);
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ogs_assert(api_version);
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ogs_assert(resource_name);
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p = url;
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last = url + OGS_HUGE_LEN;
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/* HTTP scheme is selected based on TLS information */
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if (https == true)
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p = ogs_slprintf(p, last, "https://");
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else
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p = ogs_slprintf(p, last, "http://");
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/* IP address */
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if (addr->ogs_sa_family == AF_INET6)
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p = ogs_slprintf(p, last, "[%s]", OGS_ADDR(addr, buf));
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else
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p = ogs_slprintf(p, last, "%s", OGS_ADDR(addr, buf));
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/* Port number */
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if (OGS_PORT(addr) != OGS_SBI_HTTP_PORT) {
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p = ogs_slprintf(p, last, ":%d", OGS_PORT(addr));
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}
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/* API */
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ogs_assert(service_name);
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p = ogs_slprintf(p, last, "/%s", service_name);
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ogs_assert(api_version);
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p = ogs_slprintf(p, last, "/%s", api_version);
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/* Resource */
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ogs_assert(resource_name);
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p = ogs_slprintf(p, last, "/%s", resource_name);
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if (resource_id)
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p = ogs_slprintf(p, last, "/%s", resource_id);
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return ogs_strdup(url);
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}
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char *ogs_sbi_server_uri(ogs_sbi_server_t *server,
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const char *service_name, const char *api_version,
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const char *resource_name, const char *resource_id)
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{
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bool https = false;
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if (server->tls.key && server->tls.pem)
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https = true;
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return ogs_uridup(https, server->addr, service_name, api_version,
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resource_name, resource_id);
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}
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char *ogs_sbi_client_uri(ogs_sbi_client_t *client,
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const char *service_name, const char *api_version,
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const char *resource_name, const char *resource_id)
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{
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bool https = false;
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if (client->tls.key && client->tls.pem)
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https = true;
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return ogs_uridup(https, client->addr, service_name, api_version,
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resource_name, resource_id);
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}
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/**
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* Returns a url-decoded version of str
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* IMPORTANT: be sure to free() the returned string after use
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* Thanks Geek Hideout!
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* http://www.geekhideout.com/urlcode.shtml
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*/
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static char *url_decode(const char *str)
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{
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if (str != NULL) {
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char *pstr = (char*)str;
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char *buf = ogs_malloc(strlen(str) + 1);
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char *pbuf = buf;
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while (*pstr) {
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if (*pstr == '%') {
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if (pstr[1] && pstr[2]) {
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*pbuf++ = ogs_from_hex(pstr[1]) << 4 |
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ogs_from_hex(pstr[2]);
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pstr += 2;
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}
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} else if (*pstr == '+') {
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*pbuf++ = ' ';
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} else {
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*pbuf++ = * pstr;
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}
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pstr++;
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}
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*pbuf = '\0';
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return buf;
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} else {
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return NULL;
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}
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}
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char *ogs_sbi_parse_url(char *url, const char *delim, char **saveptr)
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{
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char *item = NULL;
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item = url_decode(strtok_r(url, delim, saveptr));
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if (!item) {
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return NULL;
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}
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return item;
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}
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ogs_sockaddr_t *ogs_sbi_getaddr_from_uri(char *uri)
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{
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int rv;
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struct yuarel yuarel;
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char *p = NULL;
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int port;
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ogs_sockaddr_t *addr = NULL;
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p = ogs_strdup(uri);
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rv = yuarel_parse(&yuarel, p);
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if (rv != OGS_OK) {
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ogs_free(p);
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ogs_error("yuarel_parse() failed [%s]", uri);
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return NULL;
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}
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if (!yuarel.scheme) {
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ogs_error("No http.scheme found [%s]", uri);
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ogs_free(p);
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return NULL;
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}
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if (strcmp(yuarel.scheme, "https") == 0) {
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port = OGS_SBI_HTTPS_PORT;
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} else if (strcmp(yuarel.scheme, "http") == 0) {
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port = OGS_SBI_HTTP_PORT;
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} else {
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ogs_error("Invalid http.scheme [%s:%s]", yuarel.scheme, uri);
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ogs_free(p);
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return NULL;
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}
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if (!yuarel.host) {
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ogs_error("No http.host found [%s]", uri);
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ogs_free(p);
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return NULL;
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}
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if (yuarel.port) port = yuarel.port;
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rv = ogs_getaddrinfo(&addr, AF_UNSPEC, yuarel.host, port, 0);
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if (rv != OGS_OK) {
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ogs_error("ogs_getaddrinfo() failed [%s]", uri);
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ogs_free(p);
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return NULL;
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}
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ogs_free(p);
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return addr;
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}
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