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5 * additional information regarding copyright ownership.
7 * UCAID licenses this file to you under the Apache License,
8 * Version 2.0 (the "License"); you may not use this file except
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12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
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24 * TCP-based SocketListener implementation.
28 #include "exceptions.h"
29 #include "remoting/impl/SocketListener.h"
30 #include "util/IPRange.h"
32 #include <boost/bind.hpp>
33 #include <boost/algorithm/string.hpp>
34 #include <xercesc/util/XMLUniDefs.hpp>
35 #include <xmltooling/unicode.h>
36 #include <xmltooling/util/XMLHelper.h>
39 # include <winsock2.h>
40 # include <ws2tcpip.h>
44 # include <sys/socket.h>
48 # include <arpa/inet.h>
49 # include <netinet/in.h>
52 #include <sys/types.h>
53 #include <sys/stat.h> /* for chmod() */
58 using namespace shibsp;
59 using namespace xmltooling;
60 using namespace xercesc;
61 using namespace boost;
65 class TCPListener : virtual public SocketListener
68 TCPListener(const DOMElement* e);
71 bool create(ShibSocket& s) const;
72 bool bind(ShibSocket& s, bool force=false) const;
73 bool connect(ShibSocket& s) const;
74 bool close(ShibSocket& s) const;
75 bool accept(ShibSocket& listener, ShibSocket& s) const;
77 int send(ShibSocket& s, const char* buf, int len) const {
78 return ::send(s, buf, len, 0);
81 int recv(ShibSocket& s, char* buf, int buflen) const {
82 return ::recv(s, buf, buflen, 0);
86 bool setup_tcp_sockaddr();
89 unsigned short m_port;
90 vector<IPRange> m_acl;
92 #ifdef HAVE_STRUCT_SOCKADDR_STORAGE
93 struct sockaddr_storage m_sockaddr;
95 struct sockaddr_in m_sockaddr;
99 ListenerService* SHIBSP_DLLLOCAL TCPListenerServiceFactory(const DOMElement* const & e)
101 return new TCPListener(e);
104 static const XMLCh address[] = UNICODE_LITERAL_7(a,d,d,r,e,s,s);
105 static const XMLCh port[] = UNICODE_LITERAL_4(p,o,r,t);
106 static const XMLCh acl[] = UNICODE_LITERAL_3(a,c,l);
109 TCPListener::TCPListener(const DOMElement* e)
111 m_address(XMLHelper::getAttrString(e, getenv("SHIBSP_LISTENER_ADDRESS"), address)),
112 m_port(XMLHelper::getAttrInt(e, 0, port))
114 if (m_address.empty())
115 m_address = "127.0.0.1";
118 const char* p = getenv("SHIBSP_LISTENER_PORT");
125 vector<string> rawacls;
126 string aclbuf = XMLHelper::getAttrString(e, "127.0.0.1", acl);
127 boost::split(rawacls, aclbuf, boost::is_space(), algorithm::token_compress_on);
128 for (vector<string>::const_iterator i = rawacls.begin(); i < rawacls.end(); ++i) {
130 m_acl.push_back(IPRange::parseCIDRBlock(i->c_str()));
132 catch (std::exception& ex) {
133 log->error("invalid CIDR block (%s): %s", i->c_str(), ex.what());
138 log->warn("invalid CIDR range(s) in acl property, allowing 127.0.0.1 as a fall back");
139 m_acl.push_back(IPRange::parseCIDRBlock("127.0.0.1"));
142 if (!setup_tcp_sockaddr()) {
143 throw ConfigurationException("Unable to use configured socket address property.");
147 bool TCPListener::setup_tcp_sockaddr()
149 struct addrinfo* ret = nullptr;
150 struct addrinfo hints;
152 memset(&hints, 0, sizeof(hints));
153 hints.ai_flags = AI_NUMERICHOST;
154 hints.ai_family = AF_UNSPEC;
156 if (getaddrinfo(m_address.c_str(), nullptr, &hints, &ret) != 0) {
157 log->error("unable to parse server address (%s)", m_address.c_str());
161 m_sockaddrlen = ret->ai_addrlen;
162 if (ret->ai_family == AF_INET) {
163 memcpy(&m_sockaddr, ret->ai_addr, m_sockaddrlen);
165 ((struct sockaddr_in*)&m_sockaddr)->sin_port=htons(m_port);
168 #if defined(AF_INET6) && defined(HAVE_STRUCT_SOCKADDR_STORAGE)
169 else if (ret->ai_family == AF_INET6) {
170 memcpy(&m_sockaddr, ret->ai_addr, m_sockaddrlen);
172 ((struct sockaddr_in6*)&m_sockaddr)->sin6_port=htons(m_port);
177 log->error("unknown address type (%d)", ret->ai_family);
182 bool TCPListener::create(ShibSocket& s) const
184 #ifdef HAVE_STRUCT_SOCKADDR_STORAGE
185 s = socket(m_sockaddr.ss_family, SOCK_STREAM, 0);
187 s = socket(m_sockaddr.sin_family, SOCK_STREAM, 0);
190 if(s == INVALID_SOCKET)
194 return log_error("socket");
198 bool TCPListener::bind(ShibSocket& s, bool force) const
200 // XXX: Do we care about the return value from setsockopt?
202 ::setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (const char*)&opt, sizeof(opt));
205 if (SOCKET_ERROR==::bind(s, (const struct sockaddr*)&m_sockaddr, m_sockaddrlen) || SOCKET_ERROR==::listen(s, 3)) {
211 // Newer BSDs, and Solaris, require the struct length be passed based on the socket address.
212 // All but Solaris seem to have an ss_len field in the sockaddr_storage struct.
213 # ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
214 # ifdef HAVE_STRUCT_SOCKADDR_STORAGE
215 if (::bind(s, (const struct sockaddr*)&m_sockaddr, m_sockaddr.ss_len) < 0) {
217 if (::bind(s, (const struct sockaddr*)&m_sockaddr, m_sockaddr.sin_len) < 0) {
220 if (::bind(s, (const struct sockaddr*)&m_sockaddr, m_sockaddrlen) < 0) {
231 bool TCPListener::connect(ShibSocket& s) const
234 if(SOCKET_ERROR==::connect(s, (const struct sockaddr*)&m_sockaddr, m_sockaddrlen))
235 return log_error("connect");
237 // Newer BSDs require the struct length be passed based on the socket address.
238 // Others have no field for that and take the whole struct size like Windows does.
239 # ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
240 # ifdef HAVE_STRUCT_SOCKADDR_STORAGE
241 if (::connect(s, (const struct sockaddr*)&m_sockaddr, m_sockaddr.ss_len) < 0)
243 if (::connect(s, (const struct sockaddr*)&m_sockaddr, m_sockaddr.sin_len) < 0)
246 if (::connect(s, (const struct sockaddr*)&m_sockaddr, m_sockaddrlen) < 0)
248 return log_error("connect");
253 bool TCPListener::close(ShibSocket& s) const
263 bool TCPListener::accept(ShibSocket& listener, ShibSocket& s) const
265 #ifdef HAVE_STRUCT_SOCKADDR_STORAGE
266 struct sockaddr_storage addr;
268 struct sockaddr_in addr;
270 memset(&addr, 0, sizeof(addr));
273 int size=sizeof(addr);
274 s=::accept(listener, (struct sockaddr*)&addr, &size);
275 if(s==INVALID_SOCKET)
277 socklen_t size=sizeof(addr);
278 s=::accept(listener, (struct sockaddr*)&addr, &size);
281 return log_error("accept");
283 static bool (IPRange::* contains)(const struct sockaddr*) const = &IPRange::contains;
284 if (find_if(m_acl.begin(), m_acl.end(), boost::bind(contains, _1, (const struct sockaddr*)&addr)) == m_acl.end()) {
287 log->error("accept() rejected client with invalid address");