diff options
Diffstat (limited to 'src/modules/netlib/netlibopenconn.cpp')
| -rw-r--r-- | src/modules/netlib/netlibopenconn.cpp | 944 |
1 files changed, 944 insertions, 0 deletions
diff --git a/src/modules/netlib/netlibopenconn.cpp b/src/modules/netlib/netlibopenconn.cpp new file mode 100644 index 0000000000..b9d4753b9a --- /dev/null +++ b/src/modules/netlib/netlibopenconn.cpp @@ -0,0 +1,944 @@ +/*
+
+Miranda IM: the free IM client for Microsoft* Windows*
+
+Copyright 2000-2012 Miranda ICQ/IM project,
+all portions of this codebase are copyrighted to the people
+listed in contributors.txt.
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+#include "commonheaders.h"
+#include "netlib.h"
+
+extern CRITICAL_SECTION csNetlibUser;
+extern HANDLE hConnectionOpenMutex;
+extern DWORD g_LastConnectionTick;
+extern int connectionTimeout;
+static int iUPnPCleanup = 0;
+
+#define RECV_DEFAULT_TIMEOUT 60000
+
+//returns in network byte order
+DWORD DnsLookup(struct NetlibUser *nlu,const char *szHost)
+{
+ HOSTENT* host;
+ DWORD ip = inet_addr(szHost);
+ if (ip != INADDR_NONE)
+ return ip;
+
+ __try
+ {
+ host = gethostbyname(szHost);
+ if ( host )
+ return *(u_long*)host->h_addr_list[0];
+
+ NetlibLogf(nlu,"%s %d: %s() for host %s failed (%u)",__FILE__,__LINE__,"gethostbyname", szHost, WSAGetLastError());
+ }
+ __except(EXCEPTION_EXECUTE_HANDLER) {}
+
+ return 0;
+}
+
+int WaitUntilReadable(SOCKET s, DWORD dwTimeout, bool check)
+{
+ fd_set readfd;
+ TIMEVAL tv;
+
+ if (s == INVALID_SOCKET) return SOCKET_ERROR;
+
+ tv.tv_sec = dwTimeout / 1000;
+ tv.tv_usec = (dwTimeout % 1000) * 1000;
+
+ FD_ZERO(&readfd);
+ FD_SET(s, &readfd);
+
+ int result = select(0, &readfd, 0, 0, &tv);
+ if (result == 0 && !check) SetLastError(ERROR_TIMEOUT);
+ return result;
+}
+
+int WaitUntilWritable(SOCKET s,DWORD dwTimeout)
+{
+ fd_set writefd;
+ TIMEVAL tv;
+
+ tv.tv_sec = dwTimeout / 1000;
+ tv.tv_usec = (dwTimeout % 1000) * 1000;
+
+ FD_ZERO(&writefd);
+ FD_SET(s, &writefd);
+
+ switch(select(0, 0, &writefd, 0, &tv))
+ {
+ case 0:
+ SetLastError(ERROR_TIMEOUT);
+ case SOCKET_ERROR:
+ return 0;
+ }
+ return 1;
+}
+
+bool RecvUntilTimeout(struct NetlibConnection *nlc, char *buf, int len, int flags, DWORD dwTimeout)
+{
+ int nReceived = 0;
+ DWORD dwTimeNow, dwCompleteTime = GetTickCount() + dwTimeout;
+
+ while ((dwTimeNow = GetTickCount()) < dwCompleteTime)
+ {
+ if (WaitUntilReadable(nlc->s, dwCompleteTime - dwTimeNow) <= 0) return false;
+ nReceived = NLRecv(nlc, buf, len, flags);
+ if (nReceived <= 0) return false;
+
+ buf += nReceived;
+ len -= nReceived;
+ if (len <= 0) return true;
+ }
+ SetLastError( ERROR_TIMEOUT );
+ return false;
+}
+
+static int NetlibInitSocks4Connection(NetlibConnection *nlc, NetlibUser *nlu, NETLIBOPENCONNECTION *nloc)
+{
+ // http://www.socks.nec.com/protocol/socks4.protocol and http://www.socks.nec.com/protocol/socks4a.protocol
+ if (!nloc->szHost || !nloc->szHost[0]) return 0;
+
+ size_t nHostLen = strlen(nloc->szHost) + 1;
+ size_t nUserLen = nlu->settings.szProxyAuthUser ? strlen(nlu->settings.szProxyAuthUser) + 1 : 1;
+ size_t len = 8 + nUserLen;
+
+ char* pInit = (char*)alloca(len + nHostLen);
+ pInit[0] = 4; // SOCKS4
+ pInit[1] = 1; //connect
+ *(PWORD)&pInit[2] = htons(nloc->wPort);
+
+ if (nUserLen <= 1) pInit[8] = 0;
+ else memcpy(&pInit[8], nlu->settings.szProxyAuthUser, nUserLen);
+
+ //if cannot resolve host, try resolving through proxy (requires SOCKS4a)
+ DWORD ip = DnsLookup(nlu, nloc->szHost);
+ *(PDWORD)&pInit[4] = ip ? ip : 0x01000000;
+ if (!ip)
+ {
+ memcpy(&pInit[len], nloc->szHost, nHostLen);
+ len += nHostLen;
+ }
+
+ if (NLSend(nlc, pInit, (int)len, MSG_DUMPPROXY) == SOCKET_ERROR)
+ {
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"NLSend",GetLastError());
+ return 0;
+ }
+
+ char reply[8];
+ if (!RecvUntilTimeout(nlc, reply, sizeof(reply), MSG_DUMPPROXY, RECV_DEFAULT_TIMEOUT))
+ {
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"RecvUntilTimeout",GetLastError());
+ return 0;
+ }
+
+ switch ((BYTE)reply[1])
+ {
+ case 90: return 1;
+ case 91: SetLastError(ERROR_ACCESS_DENIED); break;
+ case 92: SetLastError(ERROR_CONNECTION_UNAVAIL); break;
+ case 93: SetLastError(ERROR_INVALID_ACCESS); break;
+ default: SetLastError(ERROR_INVALID_DATA); break;
+ }
+ NetlibLogf(nlu,"%s %d: Proxy connection failed (%x %u)",__FILE__,__LINE__, (BYTE)reply[1], GetLastError());
+ return 0;
+}
+
+static int NetlibInitSocks5Connection(struct NetlibConnection *nlc,struct NetlibUser *nlu,NETLIBOPENCONNECTION *nloc)
+{ //rfc1928
+ BYTE buf[258];
+
+ buf[0]=5; //yep, socks5
+ buf[1]=1; //one auth method
+ buf[2]=nlu->settings.useProxyAuth?2:0;
+ if(NLSend(nlc,(char*)buf,3,MSG_DUMPPROXY)==SOCKET_ERROR) {
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"NLSend",GetLastError());
+ return 0;
+ }
+
+ //confirmation of auth method
+ if (!RecvUntilTimeout(nlc,(char*)buf,2,MSG_DUMPPROXY,RECV_DEFAULT_TIMEOUT)) {
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"RecvUntilTimeout",GetLastError());
+ return 0;
+ }
+ if((buf[1]!=0 && buf[1]!=2)) {
+ SetLastError(ERROR_INVALID_ID_AUTHORITY);
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"NLRecv",GetLastError());
+ return 0;
+ }
+
+ if(buf[1]==2) { //rfc1929
+ int nUserLen,nPassLen;
+ PBYTE pAuthBuf;
+
+ nUserLen=lstrlenA(nlu->settings.szProxyAuthUser);
+ nPassLen=lstrlenA(nlu->settings.szProxyAuthPassword);
+ pAuthBuf=(PBYTE)mir_alloc(3+nUserLen+nPassLen);
+ pAuthBuf[0]=1; //auth version
+ pAuthBuf[1]=nUserLen;
+ memcpy(pAuthBuf+2,nlu->settings.szProxyAuthUser,nUserLen);
+ pAuthBuf[2+nUserLen]=nPassLen;
+ memcpy(pAuthBuf+3+nUserLen,nlu->settings.szProxyAuthPassword,nPassLen);
+ if(NLSend(nlc,(char*)pAuthBuf,3+nUserLen+nPassLen,MSG_DUMPPROXY)==SOCKET_ERROR) {
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"NLSend",GetLastError());
+ mir_free(pAuthBuf);
+ return 0;
+ }
+ mir_free(pAuthBuf);
+
+ if (!RecvUntilTimeout(nlc,(char*)buf,2,MSG_DUMPPROXY,RECV_DEFAULT_TIMEOUT)) {
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"RecvUntilTimeout",GetLastError());
+ return 0;
+ }
+ if(buf[1]) {
+ SetLastError(ERROR_ACCESS_DENIED);
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"RecvUntilTimeout",GetLastError());
+ return 0;
+ }
+ }
+
+ {
+ PBYTE pInit;
+ int nHostLen;
+ DWORD hostIP;
+
+ if(nlc->dnsThroughProxy) {
+ if((hostIP=inet_addr(nloc->szHost))==INADDR_NONE)
+ nHostLen=lstrlenA(nloc->szHost)+1;
+ else nHostLen=4;
+ }
+ else {
+ if((hostIP=DnsLookup(nlu,nloc->szHost))==0)
+ return 0;
+ nHostLen=4;
+ }
+ pInit=(PBYTE)mir_alloc(6+nHostLen);
+ pInit[0]=5; //SOCKS5
+ pInit[1]= nloc->flags & NLOCF_UDP ? 3 : 1; //connect or UDP
+ pInit[2]=0; //reserved
+ if(hostIP==INADDR_NONE) { //DNS lookup through proxy
+ pInit[3]=3;
+ pInit[4]=nHostLen-1;
+ memcpy(pInit+5,nloc->szHost,nHostLen-1);
+ }
+ else {
+ pInit[3]=1;
+ *(PDWORD)(pInit+4)=hostIP;
+ }
+ *(PWORD)(pInit+4+nHostLen)=htons(nloc->wPort);
+ if(NLSend(nlc,(char*)pInit,6+nHostLen,MSG_DUMPPROXY)==SOCKET_ERROR) {
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"NLSend",GetLastError());
+ mir_free(pInit);
+ return 0;
+ }
+ mir_free(pInit);
+ }
+
+ if (!RecvUntilTimeout(nlc,(char*)buf,5,MSG_DUMPPROXY,RECV_DEFAULT_TIMEOUT)) {
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"RecvUntilTimeout",GetLastError());
+ return 0;
+ }
+
+ if ( buf[0]!=5 || buf[1] ) {
+ const char* err = "Unknown response";
+ if ( buf[0] != 5 )
+ SetLastError(ERROR_BAD_FORMAT);
+ else
+ {
+ switch(buf[1])
+ {
+ case 1: SetLastError(ERROR_GEN_FAILURE); err = "General failure"; break;
+ case 2: SetLastError(ERROR_ACCESS_DENIED); err = "Connection not allowed by ruleset"; break;
+ case 3: SetLastError(WSAENETUNREACH); err = "Network unreachable"; break;
+ case 4: SetLastError(WSAEHOSTUNREACH); err = "Host unreachable"; break;
+ case 5: SetLastError(WSAECONNREFUSED); err = "Connection refused by destination host"; break;
+ case 6: SetLastError(WSAETIMEDOUT); err = "TTL expired"; break;
+ case 7: SetLastError(ERROR_CALL_NOT_IMPLEMENTED); err = "Command not supported / protocol error"; break;
+ case 8: SetLastError(ERROR_INVALID_ADDRESS); err = "Address type not supported"; break;
+ default: SetLastError(ERROR_INVALID_DATA); break;
+ }
+ }
+ NetlibLogf(nlu,"%s %d: Proxy conection failed. %s.",__FILE__,__LINE__, err);
+ return 0;
+ }
+ {
+ int nRecvSize = 0;
+ switch( buf[3] ) {
+ case 1:// ipv4 addr
+ nRecvSize = 5;
+ break;
+ case 3:// dns name addr
+ nRecvSize = buf[4] + 2;
+ break;
+ case 4:// ipv6 addr
+ nRecvSize = 17;
+ break;
+ default:
+ NetlibLogf(nlu,"%s %d: %s() unknown address type (%u)",__FILE__,__LINE__,"NetlibInitSocks5Connection",(int)buf[3]);
+ return 0;
+ }
+ if (!RecvUntilTimeout(nlc,(char*)buf,nRecvSize,MSG_DUMPPROXY,RECV_DEFAULT_TIMEOUT)) {
+ NetlibLogf(nlu,"%s %d: %s() failed (%u)",__FILE__,__LINE__,"RecvUntilTimeout",GetLastError());
+ return 0;
+ }
+ }
+
+ //connected
+ return 1;
+}
+
+static bool NetlibInitHttpsConnection(struct NetlibConnection *nlc, struct NetlibUser *nlu, NETLIBOPENCONNECTION *nloc)
+{ //rfc2817
+ NETLIBHTTPREQUEST nlhrSend = {0}, *nlhrReply;
+ char szUrl[512];
+
+ nlhrSend.cbSize = sizeof(nlhrSend);
+ nlhrSend.requestType = REQUEST_CONNECT;
+ nlhrSend.flags = NLHRF_GENERATEHOST | NLHRF_DUMPPROXY | NLHRF_SMARTAUTHHEADER | NLHRF_HTTP11 | NLHRF_NOPROXY | NLHRF_REDIRECT;
+ if (nlc->dnsThroughProxy)
+ {
+ mir_snprintf(szUrl, SIZEOF(szUrl), "%s:%u", nloc->szHost, nloc->wPort);
+ }
+ else
+ {
+ DWORD ip = DnsLookup(nlu, nloc->szHost);
+ if (ip == 0) return false;
+ mir_snprintf(szUrl, SIZEOF(szUrl), "%s:%u", inet_ntoa(*(PIN_ADDR)&ip), nloc->wPort);
+ }
+ nlhrSend.szUrl = szUrl;
+
+ nlc->usingHttpGateway = true;
+
+ if (NetlibHttpSendRequest((WPARAM)nlc, (LPARAM)&nlhrSend) == SOCKET_ERROR)
+ {
+ nlc->usingHttpGateway = false;
+ return 0;
+ }
+ nlhrReply = NetlibHttpRecv(nlc, MSG_DUMPPROXY | MSG_RAW, MSG_DUMPPROXY | MSG_RAW, true);
+ nlc->usingHttpGateway = false;
+ if (nlhrReply == NULL) return false;
+ if (nlhrReply->resultCode < 200 || nlhrReply->resultCode >= 300)
+ {
+ if (nlhrReply->resultCode == 403 && nlc->dnsThroughProxy)
+ {
+ NetlibHttpFreeRequestStruct(0, (LPARAM)nlhrReply);
+ nlc->dnsThroughProxy = 0;
+ return NetlibInitHttpsConnection(nlc, nlu, nloc);
+ }
+
+ NetlibHttpSetLastErrorUsingHttpResult(nlhrReply->resultCode);
+ NetlibLogf(nlu,"%s %d: %s request failed (%u %s)",__FILE__,__LINE__,nlu->settings.proxyType==PROXYTYPE_HTTP?"HTTP":"HTTPS",nlhrReply->resultCode,nlhrReply->szResultDescr);
+ NetlibHttpFreeRequestStruct(0, (LPARAM)nlhrReply);
+ return 0;
+ }
+ NetlibHttpFreeRequestStruct(0, (LPARAM)nlhrReply);
+ //connected
+ return true;
+}
+
+static void FreePartiallyInitedConnection(struct NetlibConnection *nlc)
+{
+ DWORD dwOriginalLastError=GetLastError();
+
+ if (nlc->s!=INVALID_SOCKET) closesocket(nlc->s);
+ mir_free(nlc->nlhpi.szHttpPostUrl);
+ mir_free(nlc->nlhpi.szHttpGetUrl);
+ mir_free((char*)nlc->nloc.szHost);
+ mir_free(nlc->szProxyServer);
+ NetlibDeleteNestedCS(&nlc->ncsSend);
+ NetlibDeleteNestedCS(&nlc->ncsRecv);
+ CloseHandle(nlc->hOkToCloseEvent);
+ DeleteCriticalSection(&nlc->csHttpSequenceNums);
+ mir_free(nlc);
+ SetLastError(dwOriginalLastError);
+}
+
+static bool my_connectIPv4(NetlibConnection *nlc, NETLIBOPENCONNECTION * nloc)
+{
+ int rc = 0, retrycnt = 0;
+ u_long notblocking = 1;
+ DWORD lasterr = 0;
+ static const TIMEVAL tv = { 1, 0 };
+
+ unsigned int dwTimeout = (nloc->cbSize == sizeof(NETLIBOPENCONNECTION) && nloc->flags & NLOCF_V2) ? nloc->timeout : 0;
+ // if dwTimeout is zero then its an old style connection or new with a 0 timeout, select() will error quicker anyway
+ if (dwTimeout == 0) dwTimeout = 30;
+
+ // this is for XP SP2 where there is a default connection attempt limit of 10/second
+ if (connectionTimeout)
+ {
+ WaitForSingleObject(hConnectionOpenMutex, 10000);
+ int waitdiff = GetTickCount() - g_LastConnectionTick;
+ if (waitdiff < connectionTimeout) SleepEx(connectionTimeout, TRUE);
+ g_LastConnectionTick = GetTickCount();
+ ReleaseMutex(hConnectionOpenMutex);
+
+ // might of died in between the wait
+ if (Miranda_Terminated()) return false;
+ }
+
+ SOCKADDR_IN sin = {0};
+ sin.sin_family = AF_INET;
+
+ if (nlc->proxyType)
+ {
+ if (!nlc->szProxyServer) return false;
+
+ if (nloc)
+ NetlibLogf(nlc->nlu,"(%p) Connecting to proxy %s:%d for %s:%d ....", nlc, nlc->szProxyServer, nlc->wProxyPort, nloc->szHost, nloc->wPort);
+ else
+ NetlibLogf(nlc->nlu,"(%p) Connecting to proxy %s:%d ....", nlc, nlc->szProxyServer, nlc->wProxyPort);
+
+ sin.sin_port = htons(nlc->wProxyPort);
+ sin.sin_addr.s_addr = DnsLookup(nlc->nlu, nlc->szProxyServer);
+ }
+ else
+ {
+ if (!nloc || !nloc->szHost) return false;
+ NetlibLogf(nlc->nlu,"(%p) Connecting to server %s:%d....", nlc, nloc->szHost, nloc->wPort);
+
+ sin.sin_port = htons(nloc->wPort);
+ sin.sin_addr.s_addr = DnsLookup(nlc->nlu, nloc->szHost);
+ }
+
+retry:
+ nlc->s = socket(AF_INET,nloc->flags & NLOCF_UDP ? SOCK_DGRAM : SOCK_STREAM, 0);
+ if (nlc->s == INVALID_SOCKET) return false;
+
+ // return the socket to non blocking
+ if (ioctlsocket(nlc->s, FIONBIO, ¬blocking) != 0) return false;
+
+ if (nlc->nlu->settings.specifyOutgoingPorts && nlc->nlu->settings.szOutgoingPorts && nlc->nlu->settings.szOutgoingPorts[0])
+ {
+ if (!BindSocketToPort(nlc->nlu->settings.szOutgoingPorts, nlc->s, &nlc->nlu->inportnum))
+ NetlibLogf(nlc->nlu,"Netlib connect: Not enough ports for outgoing connections specified");
+ }
+
+ // try a connect
+ if (connect(nlc->s, (LPSOCKADDR)&sin, sizeof(sin)) == 0)
+ {
+ goto unblock;
+ }
+
+ // didn't work, was it cos of nonblocking?
+ if (WSAGetLastError() != WSAEWOULDBLOCK)
+ {
+ rc = SOCKET_ERROR;
+ goto unblock;
+ }
+
+ for (;;)
+ {
+ fd_set r, w, e;
+ FD_ZERO(&r); FD_ZERO(&w); FD_ZERO(&e);
+ FD_SET(nlc->s, &r);
+ FD_SET(nlc->s, &w);
+ FD_SET(nlc->s, &e);
+ if ((rc = select(0, &r, &w, &e, &tv)) == SOCKET_ERROR)
+ break;
+
+ if (rc > 0)
+ {
+ if (FD_ISSET(nlc->s, &w))
+ {
+ // connection was successful
+ rc = 0;
+ }
+ if (FD_ISSET(nlc->s, &r))
+ {
+ // connection was closed
+ rc = SOCKET_ERROR;
+ lasterr = WSAECONNRESET;
+ }
+ if (FD_ISSET(nlc->s, &e))
+ {
+ // connection failed.
+ int len = sizeof(lasterr);
+ rc = SOCKET_ERROR;
+ getsockopt(nlc->s, SOL_SOCKET, SO_ERROR, (char*)&lasterr, &len);
+ if (lasterr == WSAEADDRINUSE && ++retrycnt <= 2)
+ {
+ closesocket(nlc->s);
+ goto retry;
+ }
+ }
+ break;
+ }
+ else if (Miranda_Terminated())
+ {
+ rc = SOCKET_ERROR;
+ lasterr = ERROR_TIMEOUT;
+ break;
+ }
+ else if (nloc->cbSize == sizeof(NETLIBOPENCONNECTION) && nloc->flags & NLOCF_V2 &&
+ nloc->waitcallback != NULL && nloc->waitcallback(&dwTimeout) == 0)
+ {
+ rc = SOCKET_ERROR;
+ lasterr = ERROR_TIMEOUT;
+ break;
+ }
+ if (--dwTimeout == 0)
+ {
+ rc = SOCKET_ERROR;
+ lasterr = ERROR_TIMEOUT;
+ break;
+ }
+ }
+
+unblock:
+ notblocking = 0;
+ ioctlsocket(nlc->s, FIONBIO, ¬blocking);
+ if (lasterr) SetLastError(lasterr);
+ return rc == 0;
+}
+
+static bool my_connectIPv6(NetlibConnection *nlc, NETLIBOPENCONNECTION * nloc)
+{
+ int rc = SOCKET_ERROR, retrycnt = 0;
+ u_long notblocking = 1;
+ DWORD lasterr = 0;
+ static const TIMEVAL tv = { 1, 0 };
+
+ unsigned int dwTimeout = (nloc->cbSize == sizeof(NETLIBOPENCONNECTION) && nloc->flags & NLOCF_V2) ? nloc->timeout : 0;
+ // if dwTimeout is zero then its an old style connection or new with a 0 timeout, select() will error quicker anyway
+ if (dwTimeout == 0) dwTimeout = 30;
+
+ // this is for XP SP2 where there is a default connection attempt limit of 10/second
+ if (connectionTimeout)
+ {
+ WaitForSingleObject(hConnectionOpenMutex, 10000);
+ int waitdiff = GetTickCount() - g_LastConnectionTick;
+ if (waitdiff < connectionTimeout) SleepEx(connectionTimeout, TRUE);
+ g_LastConnectionTick = GetTickCount();
+ ReleaseMutex(hConnectionOpenMutex);
+
+ // might of died in between the wait
+ if (Miranda_Terminated()) return false;
+ }
+
+ char szPort[6];
+ addrinfo *air = NULL, *ai, hints = {0};
+
+ hints.ai_family = AF_UNSPEC;
+
+ if (nloc->flags & NLOCF_UDP)
+ {
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_protocol = IPPROTO_UDP;
+ }
+ else
+ {
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_protocol = IPPROTO_TCP;
+ }
+
+ if (nlc->proxyType)
+ {
+ if (!nlc->szProxyServer) return false;
+
+ if (nloc)
+ NetlibLogf(nlc->nlu,"(%p) Connecting to proxy %s:%d for %s:%d ....", nlc, nlc->szProxyServer, nlc->wProxyPort, nloc->szHost, nloc->wPort);
+ else
+ NetlibLogf(nlc->nlu,"(%p) Connecting to proxy %s:%d ....", nlc, nlc->szProxyServer, nlc->wProxyPort);
+
+ _itoa(nlc->wProxyPort, szPort, 10);
+ if (MyGetaddrinfo(nlc->szProxyServer, szPort, &hints, &air))
+ {
+ NetlibLogf(nlc->nlu,"%s %d: %s() for host %s failed (%u)",__FILE__,__LINE__,"getaddrinfo", nlc->szProxyServer, WSAGetLastError());
+ return false;
+ }
+ }
+ else
+ {
+ if (!nloc || !nloc->szHost) return false;
+ NetlibLogf(nlc->nlu,"(%p) Connecting to server %s:%d....", nlc, nloc->szHost, nloc->wPort);
+
+ _itoa(nlc->nloc.wPort, szPort, 10);
+
+ if (MyGetaddrinfo(nlc->nloc.szHost, szPort, &hints, &air))
+ {
+ NetlibLogf(nlc->nlu,"%s %d: %s() for host %s failed (%u)",__FILE__,__LINE__,"getaddrinfo", nlc->nloc.szHost, WSAGetLastError());
+ return false;
+ }
+ }
+
+ for (ai = air; ai && !Miranda_Terminated(); ai = ai->ai_next)
+ {
+retry:
+ nlc->s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+ if (nlc->s == INVALID_SOCKET) return false;
+
+ // return the socket to non blocking
+ if (ioctlsocket(nlc->s, FIONBIO, ¬blocking) != 0) return false;
+
+ if (nlc->nlu->settings.specifyOutgoingPorts && nlc->nlu->settings.szOutgoingPorts && nlc->nlu->settings.szOutgoingPorts[0])
+ {
+ if (!BindSocketToPort(nlc->nlu->settings.szOutgoingPorts, nlc->s, &nlc->nlu->inportnum))
+ NetlibLogf(nlc->nlu,"Netlib connect: Not enough ports for outgoing connections specified");
+ }
+
+ // try a connect
+ if (connect(nlc->s, ai->ai_addr, (int)ai->ai_addrlen) == 0)
+ {
+ rc = 0;
+ break;
+ }
+
+ // didn't work, was it cos of nonblocking?
+ if (WSAGetLastError() != WSAEWOULDBLOCK)
+ {
+ rc = SOCKET_ERROR;
+ break;
+ }
+
+ for (;;) // timeout loop
+ {
+ fd_set r, w, e;
+ FD_ZERO(&r); FD_ZERO(&w); FD_ZERO(&e);
+ FD_SET(nlc->s, &r);
+ FD_SET(nlc->s, &w);
+ FD_SET(nlc->s, &e);
+ if ((rc = select(0, &r, &w, &e, &tv)) == SOCKET_ERROR)
+ break;
+
+ if (rc > 0)
+ {
+ if (FD_ISSET(nlc->s, &w))
+ {
+ // connection was successful
+ rc = 0;
+ lasterr = 0;
+ }
+ if (FD_ISSET(nlc->s, &r))
+ {
+ // connection was closed
+ rc = SOCKET_ERROR;
+ lasterr = WSAECONNRESET;
+ }
+ if (FD_ISSET(nlc->s, &e))
+ {
+ // connection failed.
+ int len = sizeof(lasterr);
+ rc = SOCKET_ERROR;
+ getsockopt(nlc->s, SOL_SOCKET, SO_ERROR, (char*)&lasterr, &len);
+ if (lasterr == WSAEADDRINUSE && ++retrycnt <= 2)
+ {
+ closesocket(nlc->s);
+ nlc->s = INVALID_SOCKET;
+ goto retry;
+ }
+ }
+ break;
+ }
+ else if (Miranda_Terminated())
+ {
+ rc = SOCKET_ERROR;
+ lasterr = ERROR_TIMEOUT;
+ break;
+ }
+ else if (nloc->cbSize == sizeof(NETLIBOPENCONNECTION) && nloc->flags & NLOCF_V2 &&
+ nloc->waitcallback != NULL && nloc->waitcallback(&dwTimeout) == 0)
+ {
+ rc = SOCKET_ERROR;
+ lasterr = ERROR_TIMEOUT;
+ break;
+ }
+ if (--dwTimeout == 0)
+ {
+ rc = SOCKET_ERROR;
+ lasterr = ERROR_TIMEOUT;
+ break;
+ }
+ }
+
+ if (rc == 0) break;
+
+ closesocket(nlc->s);
+ nlc->s = INVALID_SOCKET;
+ }
+
+ MyFreeaddrinfo(air);
+
+ notblocking = 0;
+ if (nlc->s != INVALID_SOCKET) ioctlsocket(nlc->s, FIONBIO, ¬blocking);
+ if (rc && lasterr) SetLastError(lasterr);
+ return rc == 0;
+}
+
+static bool my_connect(NetlibConnection *nlc, NETLIBOPENCONNECTION * nloc)
+{
+ return MyGetaddrinfo && MyFreeaddrinfo ? my_connectIPv6(nlc, nloc) : my_connectIPv4(nlc, nloc);
+}
+
+static int NetlibHttpFallbackToDirect(struct NetlibConnection *nlc, struct NetlibUser *nlu, NETLIBOPENCONNECTION *nloc)
+{
+ NetlibDoClose(nlc, true);
+
+ NetlibLogf(nlu,"Fallback to direct connection");
+
+ nlc->proxyAuthNeeded = false;
+ nlc->proxyType = 0;
+ mir_free(nlc->szProxyServer); nlc->szProxyServer = NULL;
+ if (!my_connect(nlc, nloc))
+ {
+ NetlibLogf(nlu, "%s %d: %s() failed (%u)", __FILE__, __LINE__, "connect", WSAGetLastError());
+ return false;
+ }
+ return true;
+}
+
+bool NetlibDoConnect(NetlibConnection *nlc)
+{
+ NETLIBOPENCONNECTION *nloc = &nlc->nloc;
+ NetlibUser *nlu = nlc->nlu;
+
+ mir_free(nlc->szProxyServer); nlc->szProxyServer = NULL;
+
+ bool usingProxy = false, forceHttps = false;
+ if (nlu->settings.useProxy)
+ {
+ if (nlu->settings.proxyType == PROXYTYPE_IE)
+ {
+ usingProxy = NetlibGetIeProxyConn(nlc, false);
+ }
+ else
+ {
+ if (nlu->settings.szProxyServer && nlu->settings.szProxyServer[0])
+ {
+ nlc->szProxyServer = mir_strdup(nlu->settings.szProxyServer);
+ nlc->wProxyPort = nlu->settings.wProxyPort;
+ nlc->proxyType = nlu->settings.proxyType;
+ usingProxy = true;
+ }
+ }
+ }
+
+retry:
+ if (usingProxy)
+ {
+ if (!my_connect(nlc, nloc))
+ {
+ usingProxy = false;
+ nlc->proxyType = 0;
+ }
+ }
+ if (!usingProxy)
+ {
+ my_connect(nlc, nloc);
+ }
+
+ if (nlc->s == INVALID_SOCKET)
+ {
+ if (usingProxy && (nlc->proxyType == PROXYTYPE_HTTPS || nlc->proxyType == PROXYTYPE_HTTP))
+ {
+ usingProxy = false;
+ if (!NetlibHttpFallbackToDirect(nlc, nlu, nloc))
+ {
+ NetlibLogf(nlu, "%s %d: %s() failed (%u)", __FILE__, __LINE__, "connect", WSAGetLastError());
+ return false;
+ }
+ }
+ else
+ {
+ if (nlu->settings.useProxy && !usingProxy && nlu->settings.proxyType == PROXYTYPE_IE && !forceHttps)
+ {
+ forceHttps = true;
+ usingProxy = NetlibGetIeProxyConn(nlc, true);
+ if (usingProxy) goto retry;
+ }
+ NetlibLogf(nlu, "%s %d: %s() failed (%u)", __FILE__, __LINE__, "connect", WSAGetLastError());
+ return false;
+ }
+ }
+
+ if (usingProxy && !((nloc->flags & (NLOCF_HTTP | NLOCF_SSL)) == NLOCF_HTTP &&
+ (nlc->proxyType == PROXYTYPE_HTTP || nlc->proxyType == PROXYTYPE_HTTPS)))
+ {
+ if (!WaitUntilWritable(nlc->s, 30000)) return false;
+
+ switch (nlc->proxyType)
+ {
+ case PROXYTYPE_SOCKS4:
+ if (!NetlibInitSocks4Connection(nlc, nlu, nloc)) return false;
+ break;
+
+ case PROXYTYPE_SOCKS5:
+ if (!NetlibInitSocks5Connection(nlc, nlu, nloc)) return false;
+ break;
+
+ case PROXYTYPE_HTTPS:
+ nlc->proxyAuthNeeded = true;
+ if (!NetlibInitHttpsConnection(nlc, nlu, nloc))
+ {
+ usingProxy = false;
+ if (!NetlibHttpFallbackToDirect(nlc, nlu, nloc))
+ return false;
+ }
+ break;
+
+ case PROXYTYPE_HTTP:
+ nlc->proxyAuthNeeded = true;
+ if (!(nlu->user.flags & NUF_HTTPGATEWAY || nloc->flags & NLOCF_HTTPGATEWAY) || nloc->flags & NLOCF_SSL)
+ {
+ //NLOCF_HTTP not specified and no HTTP gateway available: try HTTPS
+ if (!NetlibInitHttpsConnection(nlc, nlu, nloc))
+ {
+ //can't do HTTPS: try direct
+ usingProxy = false;
+ if (!NetlibHttpFallbackToDirect(nlc, nlu, nloc))
+ return false;
+ }
+ }
+ else
+ {
+ if (!NetlibInitHttpConnection(nlc, nlu, nloc)) return false;
+ }
+ break;
+
+ default:
+ SetLastError(ERROR_INVALID_PARAMETER);
+ FreePartiallyInitedConnection(nlc);
+ return false;
+ }
+ }
+ else if (nloc->flags & NLOCF_HTTPGATEWAY)
+ {
+ if (!NetlibInitHttpConnection(nlc, nlu, nloc)) return false;
+ nlc->usingDirectHttpGateway = true;
+ }
+
+ NetlibLogf(nlu,"(%d) Connected to %s:%d", nlc->s, nloc->szHost, nloc->wPort);
+
+ if (NLOCF_SSL & nloc->flags)
+ {
+ return NetlibStartSsl((WPARAM)nlc, 0) != 0;
+ }
+
+ return true;
+}
+
+bool NetlibReconnect(NetlibConnection *nlc)
+{
+ char buf[4];
+ bool opened = nlc->s != INVALID_SOCKET;
+
+ if (opened)
+ {
+ switch (WaitUntilReadable(nlc->s, 0, true))
+ {
+ case SOCKET_ERROR:
+ opened = false;
+ break;
+
+ case 0:
+ opened = true;
+ break;
+
+ case 1:
+ opened = recv(nlc->s, buf, 1, MSG_PEEK) > 0;
+ break;
+ }
+
+ if (!opened)
+ NetlibDoClose(nlc, true);
+ }
+
+ if (!opened)
+ {
+ if (Miranda_Terminated()) return false;
+ if (nlc->usingHttpGateway)
+ {
+ nlc->proxyAuthNeeded = true;
+ return my_connect(nlc, &nlc->nloc);
+ }
+ else
+ return NetlibDoConnect(nlc);
+ }
+ return true;
+}
+
+INT_PTR NetlibOpenConnection(WPARAM wParam,LPARAM lParam)
+{
+ NETLIBOPENCONNECTION *nloc = (NETLIBOPENCONNECTION*)lParam;
+ struct NetlibUser *nlu = (struct NetlibUser*)wParam;
+ struct NetlibConnection *nlc;
+
+ NetlibLogf(nlu,"Connection request to %s:%d (Flags %x)....", nloc->szHost, nloc->wPort, nloc->flags);
+
+ if (GetNetlibHandleType(nlu) != NLH_USER || !(nlu->user.flags & NUF_OUTGOING) || nloc == NULL ||
+ (nloc->cbSize != NETLIBOPENCONNECTION_V1_SIZE && nloc->cbSize != sizeof(NETLIBOPENCONNECTION)) ||
+ nloc->szHost == NULL || nloc->wPort == 0)
+ {
+ SetLastError(ERROR_INVALID_PARAMETER);
+ return 0;
+ }
+ nlc = (struct NetlibConnection*)mir_calloc(sizeof(struct NetlibConnection));
+ nlc->handleType = NLH_CONNECTION;
+ nlc->nlu = nlu;
+ nlc->nloc = *nloc;
+ nlc->nloc.szHost = mir_strdup(nloc->szHost);
+ nlc->s = INVALID_SOCKET;
+ nlc->s2 = INVALID_SOCKET;
+ nlc->dnsThroughProxy = nlu->settings.dnsThroughProxy != 0;
+
+ InitializeCriticalSection(&nlc->csHttpSequenceNums);
+ nlc->hOkToCloseEvent = CreateEvent(NULL,TRUE,TRUE,NULL);
+ nlc->dontCloseNow = 0;
+ NetlibInitializeNestedCS(&nlc->ncsSend);
+ NetlibInitializeNestedCS(&nlc->ncsRecv);
+
+ if (!NetlibDoConnect(nlc))
+ {
+ FreePartiallyInitedConnection(nlc);
+ return 0;
+ }
+
+ if (iUPnPCleanup == 0)
+ {
+ EnterCriticalSection(&csNetlibUser);
+ if (iUPnPCleanup == 0)
+ {
+ iUPnPCleanup = 1;
+ forkthread(NetlibUPnPCleanup, 0, NULL);
+ }
+ LeaveCriticalSection(&csNetlibUser);
+ }
+
+ return (INT_PTR)nlc;
+}
+
+INT_PTR NetlibStartSsl(WPARAM wParam, LPARAM lParam)
+{
+ NetlibConnection *nlc = (NetlibConnection*)wParam;
+ if (nlc == NULL) return 0;
+
+ NETLIBSSL *sp = (NETLIBSSL*)lParam;
+ const char *szHost = sp ? sp->host : nlc->nloc.szHost;
+
+ NetlibLogf(nlc->nlu, "(%d %s) Starting SSL negotiation", nlc->s, szHost);
+ nlc->hSsl = si.connect(nlc->s, szHost, nlc->nlu->settings.validateSSL);
+
+ if (nlc->hSsl == NULL)
+ NetlibLogf(nlc->nlu,"(%d %s) Failure to negotiate SSL connection", nlc->s, szHost);
+ else
+ NetlibLogf(nlc->nlu, "(%d %s) SSL negotiation successful", nlc->s, szHost);
+
+ return nlc->hSsl != NULL;
+}
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