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122 lines
3.3 KiB
122 lines
3.3 KiB
/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "private-lib-core.h"
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#if defined(LWS_CLIENT_HTTP_PROXYING)
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int
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lws_set_proxy(struct lws_vhost *vhost, const char *proxy)
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{
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char authstring[96];
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int brackets = 0;
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char *p;
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if (!proxy)
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return -1;
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/* we have to deal with a possible redundant leading http:// */
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if (!strncmp(proxy, "http://", 7))
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proxy += 7;
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p = strrchr(proxy, '@');
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if (p) { /* auth is around */
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if ((unsigned int)(p - proxy) > sizeof(authstring) - 1)
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goto auth_too_long;
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lws_strncpy(authstring, proxy, p - proxy + 1);
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// null termination not needed on input
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if (lws_b64_encode_string(authstring, lws_ptr_diff(p, proxy),
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vhost->proxy_basic_auth_token,
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sizeof vhost->proxy_basic_auth_token) < 0)
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goto auth_too_long;
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lwsl_info(" Proxy auth in use\n");
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#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
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proxy = p + 1;
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#endif
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} else
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vhost->proxy_basic_auth_token[0] = '\0';
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#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
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#if defined(LWS_WITH_IPV6)
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/*
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* isolating the address / port is complicated by IPv6 overloading
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* the meaning of : in the address. The convention to solve it is to
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* put [] around the ipv6 address part, eg, "[::1]:443". This must be
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* parsed to "::1" as the address and the port as 443.
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*
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* IPv4 addresses like myproxy:443 continue to be parsed as normal.
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*/
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if (proxy[0] == '[')
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brackets = 1;
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#endif
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lws_strncpy(vhost->http.http_proxy_address, proxy + brackets,
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sizeof(vhost->http.http_proxy_address));
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p = vhost->http.http_proxy_address;
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#if defined(LWS_WITH_IPV6)
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if (brackets) {
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/* original is IPv6 format "[::1]:443" */
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p = strchr(vhost->http.http_proxy_address, ']');
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if (!p) {
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lwsl_err("%s: malformed proxy '%s'\n", __func__, proxy);
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return -1;
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}
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*p++ = '\0';
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}
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#endif
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p = strchr(p, ':');
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if (!p && !vhost->http.http_proxy_port) {
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lwsl_err("http_proxy needs to be ads:port\n");
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return -1;
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}
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if (p) {
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*p = '\0';
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vhost->http.http_proxy_port = atoi(p + 1);
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}
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lwsl_info(" Proxy %s:%u\n", vhost->http.http_proxy_address,
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vhost->http.http_proxy_port);
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#endif
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return 0;
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auth_too_long:
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lwsl_err("proxy auth too long\n");
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return -1;
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}
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#endif
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