1
0
Fork 0
mirror of https://github.com/warmcat/libwebsockets.git synced 2025-03-16 00:00:07 +01:00
libwebsockets/lib/core-net/client.c

117 lines
2.9 KiB
C

/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010-2019 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include "core/private.h"
LWS_VISIBLE int
lws_set_proxy(struct lws_vhost *vhost, const char *proxy)
{
char authstring[96];
int brackets = 0;
char *p;
if (!proxy)
return -1;
/* we have to deal with a possible redundant leading http:// */
if (!strncmp(proxy, "http://", 7))
proxy += 7;
p = strrchr(proxy, '@');
if (p) { /* auth is around */
if ((unsigned int)(p - proxy) > sizeof(authstring) - 1)
goto auth_too_long;
lws_strncpy(authstring, proxy, p - proxy + 1);
// null termination not needed on input
if (lws_b64_encode_string(authstring, lws_ptr_diff(p, proxy),
vhost->proxy_basic_auth_token,
sizeof vhost->proxy_basic_auth_token) < 0)
goto auth_too_long;
lwsl_info(" Proxy auth in use\n");
#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
proxy = p + 1;
#endif
} else
vhost->proxy_basic_auth_token[0] = '\0';
#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
#if defined(LWS_WITH_IPV6)
/*
* isolating the address / port is complicated by IPv6 overloading
* the meaning of : in the address. The convention to solve it is to
* put [] around the ipv6 address part, eg, "[::1]:443". This must be
* parsed to "::1" as the address and the port as 443.
*
* IPv4 addresses like myproxy:443 continue to be parsed as normal.
*/
if (proxy[0] == '[')
brackets = 1;
#endif
lws_strncpy(vhost->http.http_proxy_address, proxy + brackets,
sizeof(vhost->http.http_proxy_address));
p = vhost->http.http_proxy_address;
#if defined(LWS_WITH_IPV6)
if (brackets) {
/* original is IPv6 format "[::1]:443" */
p = strchr(vhost->http.http_proxy_address, ']');
if (!p) {
lwsl_err("%s: malformed proxy '%s'\n", __func__, proxy);
return -1;
}
*p++ = '\0';
}
#endif
p = strchr(p, ':');
if (!p && !vhost->http.http_proxy_port) {
lwsl_err("http_proxy needs to be ads:port\n");
return -1;
}
if (p) {
*p = '\0';
vhost->http.http_proxy_port = atoi(p + 1);
}
lwsl_info(" Proxy %s:%u\n", vhost->http.http_proxy_address,
vhost->http.http_proxy_port);
#endif
return 0;
auth_too_long:
lwsl_err("proxy auth too long\n");
return -1;
}