/* * Copyright 2008 Hans Leidekker for CodeWeavers * Copyright 2013 Jacek Caban for CodeWeavers * * 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; either * version 2.1 of the License, or (at your option) any later version. * * 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 St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include "wine/port.h" #include #include #include #include #include #ifdef HAVE_SYS_SOCKET_H # include #endif #ifdef HAVE_SYS_IOCTL_H # include #endif #ifdef HAVE_SYS_FILIO_H # include #endif #ifdef HAVE_POLL_H # include #endif #define NONAMELESSUNION #include "wine/debug.h" #include "wine/library.h" #include "windef.h" #include "winbase.h" #include "winhttp.h" #include "wincrypt.h" #include "schannel.h" #include "winhttp_private.h" /* to avoid conflicts with the Unix socket headers */ #define USE_WS_PREFIX #include "winsock2.h" WINE_DEFAULT_DEBUG_CHANNEL(winhttp); #ifndef HAVE_GETADDRINFO /* critical section to protect non-reentrant gethostbyname() */ static CRITICAL_SECTION cs_gethostbyname; static CRITICAL_SECTION_DEBUG critsect_debug = { 0, 0, &cs_gethostbyname, { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList }, 0, 0, { (DWORD_PTR)(__FILE__ ": cs_gethostbyname") } }; static CRITICAL_SECTION cs_gethostbyname = { &critsect_debug, -1, 0, 0, 0, 0 }; #endif /* translate a unix error code into a winsock error code */ #ifndef __REACTOS__ static int sock_get_error( int err ) { #if !defined(__MINGW32__) && !defined (_MSC_VER) switch (err) { case EINTR: return WSAEINTR; case EBADF: return WSAEBADF; case EPERM: case EACCES: return WSAEACCES; case EFAULT: return WSAEFAULT; case EINVAL: return WSAEINVAL; case EMFILE: return WSAEMFILE; case EWOULDBLOCK: return WSAEWOULDBLOCK; case EINPROGRESS: return WSAEINPROGRESS; case EALREADY: return WSAEALREADY; case ENOTSOCK: return WSAENOTSOCK; case EDESTADDRREQ: return WSAEDESTADDRREQ; case EMSGSIZE: return WSAEMSGSIZE; case EPROTOTYPE: return WSAEPROTOTYPE; case ENOPROTOOPT: return WSAENOPROTOOPT; case EPROTONOSUPPORT: return WSAEPROTONOSUPPORT; case ESOCKTNOSUPPORT: return WSAESOCKTNOSUPPORT; case EOPNOTSUPP: return WSAEOPNOTSUPP; case EPFNOSUPPORT: return WSAEPFNOSUPPORT; case EAFNOSUPPORT: return WSAEAFNOSUPPORT; case EADDRINUSE: return WSAEADDRINUSE; case EADDRNOTAVAIL: return WSAEADDRNOTAVAIL; case ENETDOWN: return WSAENETDOWN; case ENETUNREACH: return WSAENETUNREACH; case ENETRESET: return WSAENETRESET; case ECONNABORTED: return WSAECONNABORTED; case EPIPE: case ECONNRESET: return WSAECONNRESET; case ENOBUFS: return WSAENOBUFS; case EISCONN: return WSAEISCONN; case ENOTCONN: return WSAENOTCONN; case ESHUTDOWN: return WSAESHUTDOWN; case ETOOMANYREFS: return WSAETOOMANYREFS; case ETIMEDOUT: return WSAETIMEDOUT; case ECONNREFUSED: return WSAECONNREFUSED; case ELOOP: return WSAELOOP; case ENAMETOOLONG: return WSAENAMETOOLONG; case EHOSTDOWN: return WSAEHOSTDOWN; case EHOSTUNREACH: return WSAEHOSTUNREACH; case ENOTEMPTY: return WSAENOTEMPTY; #ifdef EPROCLIM case EPROCLIM: return WSAEPROCLIM; #endif #ifdef EUSERS case EUSERS: return WSAEUSERS; #endif #ifdef EDQUOT case EDQUOT: return WSAEDQUOT; #endif #ifdef ESTALE case ESTALE: return WSAESTALE; #endif #ifdef EREMOTE case EREMOTE: return WSAEREMOTE; #endif default: errno = err; perror( "sock_set_error" ); return WSAEFAULT; } #endif return err; } #else #define sock_get_error(x) WSAGetLastError() static inline int unix_ioctl(int filedes, long request, void *arg) { return ioctlsocket(filedes, request, arg); } #define ioctlsocket unix_ioctl #endif static int sock_send(int fd, const void *msg, size_t len, int flags) { int ret; do { if ((ret = send(fd, msg, len, flags)) == -1) WARN("send error %s\n", strerror(errno)); } while(ret == -1 && errno == EINTR); return ret; } static int sock_recv(int fd, void *msg, size_t len, int flags) { int ret; do { if ((ret = recv(fd, msg, len, flags)) == -1) WARN("recv error %s\n", strerror(errno)); } while(ret == -1 && errno == EINTR); return ret; } static DWORD netconn_verify_cert( PCCERT_CONTEXT cert, WCHAR *server, DWORD security_flags ) { HCERTSTORE store = cert->hCertStore; BOOL ret; CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } }; PCCERT_CHAIN_CONTEXT chain; char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH; char *server_auth[] = { oid_server_auth }; DWORD err = ERROR_SUCCESS; TRACE("verifying %s\n", debugstr_w( server )); chainPara.RequestedUsage.Usage.cUsageIdentifier = 1; chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth; if ((ret = CertGetCertificateChain( NULL, cert, NULL, store, &chainPara, CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT, NULL, &chain ))) { if (chain->TrustStatus.dwErrorStatus) { static const DWORD supportedErrors = CERT_TRUST_IS_NOT_TIME_VALID | CERT_TRUST_IS_UNTRUSTED_ROOT | CERT_TRUST_IS_NOT_VALID_FOR_USAGE; if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_NOT_TIME_VALID) { if (!(security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID)) err = ERROR_WINHTTP_SECURE_CERT_DATE_INVALID; } else if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_UNTRUSTED_ROOT) { if (!(security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) err = ERROR_WINHTTP_SECURE_INVALID_CA; } else if ((chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_OFFLINE_REVOCATION) || (chain->TrustStatus.dwErrorStatus & CERT_TRUST_REVOCATION_STATUS_UNKNOWN)) err = ERROR_WINHTTP_SECURE_CERT_REV_FAILED; else if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_REVOKED) err = ERROR_WINHTTP_SECURE_CERT_REVOKED; else if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_NOT_VALID_FOR_USAGE) { if (!(security_flags & SECURITY_FLAG_IGNORE_CERT_WRONG_USAGE)) err = ERROR_WINHTTP_SECURE_CERT_WRONG_USAGE; } else if (chain->TrustStatus.dwErrorStatus & ~supportedErrors) err = ERROR_WINHTTP_SECURE_INVALID_CERT; } if (!err) { CERT_CHAIN_POLICY_PARA policyPara; SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara; CERT_CHAIN_POLICY_STATUS policyStatus; CERT_CHAIN_CONTEXT chainCopy; /* Clear chain->TrustStatus.dwErrorStatus so * CertVerifyCertificateChainPolicy will verify additional checks * rather than stopping with an existing, ignored error. */ memcpy(&chainCopy, chain, sizeof(chainCopy)); chainCopy.TrustStatus.dwErrorStatus = 0; sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara); sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER; sslExtraPolicyPara.pwszServerName = server; sslExtraPolicyPara.fdwChecks = security_flags; policyPara.cbSize = sizeof(policyPara); policyPara.dwFlags = 0; policyPara.pvExtraPolicyPara = &sslExtraPolicyPara; ret = CertVerifyCertificateChainPolicy( CERT_CHAIN_POLICY_SSL, &chainCopy, &policyPara, &policyStatus ); /* Any error in the policy status indicates that the * policy couldn't be verified. */ if (ret && policyStatus.dwError) { if (policyStatus.dwError == CERT_E_CN_NO_MATCH) err = ERROR_WINHTTP_SECURE_CERT_CN_INVALID; else err = ERROR_WINHTTP_SECURE_INVALID_CERT; } } CertFreeCertificateChain( chain ); } else err = ERROR_WINHTTP_SECURE_CHANNEL_ERROR; TRACE("returning %08x\n", err); return err; } #ifdef __REACTOS__ static BOOL winsock_initialized = FALSE; BOOL netconn_init_winsock() { WSADATA wsaData; int error; if (!winsock_initialized) { error = WSAStartup(MAKEWORD(1, 1), &wsaData); if (error) { ERR("WSAStartup failed: %d\n", error); return FALSE; } else winsock_initialized = TRUE; } return winsock_initialized; } #endif void netconn_unload( void ) { #ifndef HAVE_GETADDRINFO DeleteCriticalSection(&cs_gethostbyname); #endif #ifdef __REACTOS__ if(winsock_initialized) WSACleanup(); #endif } netconn_t *netconn_create( hostdata_t *host, const struct sockaddr_storage *sockaddr, int timeout ) { netconn_t *conn; unsigned int addr_len; BOOL ret = FALSE; int res; ULONG state; conn = heap_alloc_zero(sizeof(*conn)); if (!conn) return NULL; conn->host = host; conn->sockaddr = *sockaddr; if ((conn->socket = socket( sockaddr->ss_family, SOCK_STREAM, 0 )) == -1) { WARN("unable to create socket (%s)\n", strerror(errno)); set_last_error( sock_get_error( errno ) ); heap_free(conn); return NULL; } switch (conn->sockaddr.ss_family) { case AF_INET: addr_len = sizeof(struct sockaddr_in); break; case AF_INET6: addr_len = sizeof(struct sockaddr_in6); break; default: assert(0); } if (timeout > 0) { state = 1; ioctlsocket( conn->socket, FIONBIO, &state ); } for (;;) { res = 0; if (connect( conn->socket, (const struct sockaddr *)&conn->sockaddr, addr_len ) < 0) { res = sock_get_error( errno ); if (res == WSAEWOULDBLOCK || res == WSAEINPROGRESS) { #ifdef __REACTOS__ /* ReactOS: use select instead of poll */ fd_set outfd; struct timeval tv; FD_ZERO(&outfd); FD_SET(conn->socket, &outfd); tv.tv_sec = 0; tv.tv_usec = timeout * 1000; for (;;) { res = 0; if (select( 0, NULL, &outfd, NULL, &tv ) > 0) #else struct pollfd pfd; pfd.fd = conn->socket; pfd.events = POLLOUT; for (;;) { res = 0; if (poll( &pfd, 1, timeout ) > 0) #endif { ret = TRUE; break; } else { res = sock_get_error( errno ); if (res != WSAEINTR) break; } } } if (res != WSAEINTR) break; } else { ret = TRUE; break; } } if (timeout > 0) { state = 0; ioctlsocket( conn->socket, FIONBIO, &state ); } if (!ret) { WARN("unable to connect to host (%d)\n", res); set_last_error( res ); netconn_close( conn ); return NULL; } return conn; } BOOL netconn_close( netconn_t *conn ) { int res; if (conn->secure) { heap_free( conn->peek_msg_mem ); heap_free(conn->ssl_buf); heap_free(conn->extra_buf); DeleteSecurityContext(&conn->ssl_ctx); } res = closesocket( conn->socket ); release_host( conn->host ); heap_free(conn); if (res == -1) { set_last_error( sock_get_error( errno ) ); return FALSE; } return TRUE; } BOOL netconn_secure_connect( netconn_t *conn, WCHAR *hostname, DWORD security_flags, CredHandle *cred_handle ) { SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}}; SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs}; BYTE *read_buf; SIZE_T read_buf_size = 2048; ULONG attrs = 0; CtxtHandle ctx; SSIZE_T size; const CERT_CONTEXT *cert; SECURITY_STATUS status; DWORD res = ERROR_SUCCESS; const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION; read_buf = heap_alloc(read_buf_size); if(!read_buf) return FALSE; status = InitializeSecurityContextW(cred_handle, NULL, hostname, isc_req_flags, 0, 0, NULL, 0, &ctx, &out_desc, &attrs, NULL); assert(status != SEC_E_OK); while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) { if(out_buf.cbBuffer) { assert(status == SEC_I_CONTINUE_NEEDED); TRACE("sending %u bytes\n", out_buf.cbBuffer); size = sock_send(conn->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0); if(size != out_buf.cbBuffer) { ERR("send failed\n"); res = ERROR_WINHTTP_SECURE_CHANNEL_ERROR; break; } FreeContextBuffer(out_buf.pvBuffer); out_buf.pvBuffer = NULL; out_buf.cbBuffer = 0; } if(status == SEC_I_CONTINUE_NEEDED) { assert(in_bufs[1].cbBuffer < read_buf_size); memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer); in_bufs[0].cbBuffer = in_bufs[1].cbBuffer; in_bufs[1].BufferType = SECBUFFER_EMPTY; in_bufs[1].cbBuffer = 0; in_bufs[1].pvBuffer = NULL; } assert(in_bufs[0].BufferType == SECBUFFER_TOKEN); assert(in_bufs[1].BufferType == SECBUFFER_EMPTY); if(in_bufs[0].cbBuffer + 1024 > read_buf_size) { BYTE *new_read_buf; new_read_buf = heap_realloc(read_buf, read_buf_size + 1024); if(!new_read_buf) { status = E_OUTOFMEMORY; break; } in_bufs[0].pvBuffer = read_buf = new_read_buf; read_buf_size += 1024; } size = sock_recv(conn->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0); if(size < 1) { status = ERROR_WINHTTP_SECURE_CHANNEL_ERROR; break; } TRACE("recv %lu bytes\n", size); in_bufs[0].cbBuffer += size; in_bufs[0].pvBuffer = read_buf; status = InitializeSecurityContextW(cred_handle, &ctx, hostname, isc_req_flags, 0, 0, &in_desc, 0, NULL, &out_desc, &attrs, NULL); TRACE("InitializeSecurityContext ret %08x\n", status); if(status == SEC_E_OK) { if(in_bufs[1].BufferType == SECBUFFER_EXTRA) FIXME("SECBUFFER_EXTRA not supported\n"); status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &conn->ssl_sizes); if(status != SEC_E_OK) { WARN("Could not get sizes\n"); break; } status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert); if(status == SEC_E_OK) { res = netconn_verify_cert(cert, hostname, security_flags); CertFreeCertificateContext(cert); if(res != ERROR_SUCCESS) { WARN("cert verify failed: %u\n", res); break; } }else { WARN("Could not get cert\n"); break; } conn->ssl_buf = heap_alloc(conn->ssl_sizes.cbHeader + conn->ssl_sizes.cbMaximumMessage + conn->ssl_sizes.cbTrailer); if(!conn->ssl_buf) { res = GetLastError(); break; } } } heap_free(read_buf); if(status != SEC_E_OK || res != ERROR_SUCCESS) { WARN("Failed to initialize security context failed: %08x\n", status); heap_free(conn->ssl_buf); conn->ssl_buf = NULL; DeleteSecurityContext(&ctx); set_last_error(res ? res : ERROR_WINHTTP_SECURE_CHANNEL_ERROR); return FALSE; } TRACE("established SSL connection\n"); conn->secure = TRUE; conn->ssl_ctx = ctx; return TRUE; } static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size) { SecBuffer bufs[4] = { {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf}, {size, SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader}, {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size}, {0, SECBUFFER_EMPTY, NULL} }; SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs}; SECURITY_STATUS res; memcpy(bufs[1].pvBuffer, msg, size); res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0); if(res != SEC_E_OK) { WARN("EncryptMessage failed\n"); return FALSE; } if(sock_send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) { WARN("send failed\n"); return FALSE; } return TRUE; } BOOL netconn_send( netconn_t *conn, const void *msg, size_t len, int *sent ) { if (conn->secure) { const BYTE *ptr = msg; size_t chunk_size; *sent = 0; while(len) { chunk_size = min(len, conn->ssl_sizes.cbMaximumMessage); if(!send_ssl_chunk(conn, ptr, chunk_size)) return FALSE; *sent += chunk_size; ptr += chunk_size; len -= chunk_size; } return TRUE; } if ((*sent = sock_send( conn->socket, msg, len, 0 )) == -1) { set_last_error( sock_get_error( errno ) ); return FALSE; } return TRUE; } static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *ret_size, BOOL *eof) { const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer; SecBuffer bufs[4]; SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs}; SSIZE_T size, buf_len; unsigned int i; SECURITY_STATUS res; assert(conn->extra_len < ssl_buf_size); if(conn->extra_len) { memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len); buf_len = conn->extra_len; conn->extra_len = 0; heap_free(conn->extra_buf); conn->extra_buf = NULL; }else { buf_len = sock_recv(conn->socket, conn->ssl_buf+conn->extra_len, ssl_buf_size-conn->extra_len, 0); if(buf_len < 0) return FALSE; if(!buf_len) { *eof = TRUE; return TRUE; } } *ret_size = 0; *eof = FALSE; do { memset(bufs, 0, sizeof(bufs)); bufs[0].BufferType = SECBUFFER_DATA; bufs[0].cbBuffer = buf_len; bufs[0].pvBuffer = conn->ssl_buf; res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL); switch(res) { case SEC_E_OK: break; case SEC_I_CONTEXT_EXPIRED: TRACE("context expired\n"); *eof = TRUE; return TRUE; case SEC_E_INCOMPLETE_MESSAGE: assert(buf_len < ssl_buf_size); size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0); if(size < 1) return FALSE; buf_len += size; continue; default: WARN("failed: %08x\n", res); return FALSE; } } while(res != SEC_E_OK); for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) { if(bufs[i].BufferType == SECBUFFER_DATA) { size = min(buf_size, bufs[i].cbBuffer); memcpy(buf, bufs[i].pvBuffer, size); if(size < bufs[i].cbBuffer) { assert(!conn->peek_len); conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size); if(!conn->peek_msg) return FALSE; conn->peek_len = bufs[i].cbBuffer-size; memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len); } *ret_size = size; } } for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) { if(bufs[i].BufferType == SECBUFFER_EXTRA) { conn->extra_buf = heap_alloc(bufs[i].cbBuffer); if(!conn->extra_buf) return FALSE; conn->extra_len = bufs[i].cbBuffer; memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len); } } return TRUE; } BOOL netconn_recv( netconn_t *conn, void *buf, size_t len, int flags, int *recvd ) { *recvd = 0; if (!len) return TRUE; if (conn->secure) { SIZE_T size, cread; BOOL res, eof; if (conn->peek_msg) { *recvd = min( len, conn->peek_len ); memcpy( buf, conn->peek_msg, *recvd ); conn->peek_len -= *recvd; conn->peek_msg += *recvd; if (conn->peek_len == 0) { heap_free( conn->peek_msg_mem ); conn->peek_msg_mem = NULL; conn->peek_msg = NULL; } /* check if we have enough data from the peek buffer */ if (!(flags & MSG_WAITALL) || *recvd == len) return TRUE; } size = *recvd; do { res = read_ssl_chunk(conn, (BYTE*)buf+size, len-size, &cread, &eof); if(!res) { WARN("read_ssl_chunk failed\n"); if(!size) return FALSE; break; } if(eof) { TRACE("EOF\n"); break; } size += cread; }while(!size || ((flags & MSG_WAITALL) && size < len)); TRACE("received %ld bytes\n", size); *recvd = size; return TRUE; } if ((*recvd = sock_recv( conn->socket, buf, len, flags )) == -1) { set_last_error( sock_get_error( errno ) ); return FALSE; } return TRUE; } ULONG netconn_query_data_available( netconn_t *conn ) { return conn->secure ? conn->peek_len : 0; } DWORD netconn_set_timeout( netconn_t *netconn, BOOL send, int value ) { struct timeval tv; /* value is in milliseconds, convert to struct timeval */ tv.tv_sec = value / 1000; tv.tv_usec = (value % 1000) * 1000; if (setsockopt( netconn->socket, SOL_SOCKET, send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv, sizeof(tv) ) == -1) { WARN("setsockopt failed (%s)\n", strerror( errno )); return sock_get_error( errno ); } return ERROR_SUCCESS; } BOOL netconn_is_alive( netconn_t *netconn ) { #ifdef MSG_DONTWAIT ssize_t len; BYTE b; len = recv( netconn->socket, &b, 1, MSG_PEEK | MSG_DONTWAIT ); return len == 1 || (len == -1 && errno == EWOULDBLOCK); #elif defined(__MINGW32__) || defined(_MSC_VER) ULONG mode; int len; char b; mode = 1; if(!ioctlsocket(netconn->socket, FIONBIO, &mode)) return FALSE; len = recv(netconn->socket, &b, 1, MSG_PEEK); mode = 0; if(!ioctlsocket(netconn->socket, FIONBIO, &mode)) return FALSE; return len == 1 || (len == -1 && WSAGetLastError() == WSAEWOULDBLOCK); #else FIXME("not supported on this platform\n"); return TRUE; #endif } static DWORD resolve_hostname( const WCHAR *hostnameW, INTERNET_PORT port, struct sockaddr_storage *sa ) { char *hostname; #ifdef HAVE_GETADDRINFO struct addrinfo *res, hints; int ret; #else struct hostent *he; struct sockaddr_in *sin = (struct sockaddr_in *)sa; #endif if (!(hostname = strdupWA( hostnameW ))) return ERROR_OUTOFMEMORY; #ifdef HAVE_GETADDRINFO memset( &hints, 0, sizeof(struct addrinfo) ); /* Prefer IPv4 to IPv6 addresses, since some web servers do not listen on * their IPv6 addresses even though they have IPv6 addresses in the DNS. */ hints.ai_family = AF_INET; ret = getaddrinfo( hostname, NULL, &hints, &res ); if (ret != 0) { TRACE("failed to get IPv4 address of %s (%s), retrying with IPv6\n", debugstr_w(hostnameW), gai_strerror(ret)); hints.ai_family = AF_INET6; ret = getaddrinfo( hostname, NULL, &hints, &res ); if (ret != 0) { TRACE("failed to get address of %s (%s)\n", debugstr_w(hostnameW), gai_strerror(ret)); heap_free( hostname ); return ERROR_WINHTTP_NAME_NOT_RESOLVED; } } heap_free( hostname ); memcpy( sa, res->ai_addr, res->ai_addrlen ); /* Copy port */ switch (res->ai_family) { case AF_INET: ((struct sockaddr_in *)sa)->sin_port = htons( port ); break; case AF_INET6: ((struct sockaddr_in6 *)sa)->sin6_port = htons( port ); break; } freeaddrinfo( res ); return ERROR_SUCCESS; #else EnterCriticalSection( &cs_gethostbyname ); he = gethostbyname( hostname ); heap_free( hostname ); if (!he) { TRACE("failed to get address of %s (%d)\n", debugstr_w(hostnameW), h_errno); LeaveCriticalSection( &cs_gethostbyname ); return ERROR_WINHTTP_NAME_NOT_RESOLVED; } memset( sa, 0, sizeof(struct sockaddr_in) ); memcpy( &sin->sin_addr, he->h_addr, he->h_length ); sin->sin_family = he->h_addrtype; sin->sin_port = htons( port ); LeaveCriticalSection( &cs_gethostbyname ); return ERROR_SUCCESS; #endif } struct resolve_args { const WCHAR *hostname; INTERNET_PORT port; struct sockaddr_storage *sa; }; static DWORD CALLBACK resolve_proc( LPVOID arg ) { struct resolve_args *ra = arg; return resolve_hostname( ra->hostname, ra->port, ra->sa ); } BOOL netconn_resolve( WCHAR *hostname, INTERNET_PORT port, struct sockaddr_storage *sa, int timeout ) { DWORD ret; if (timeout) { DWORD status; HANDLE thread; struct resolve_args ra; ra.hostname = hostname; ra.port = port; ra.sa = sa; thread = CreateThread( NULL, 0, resolve_proc, &ra, 0, NULL ); if (!thread) return FALSE; status = WaitForSingleObject( thread, timeout ); if (status == WAIT_OBJECT_0) GetExitCodeThread( thread, &ret ); else ret = ERROR_WINHTTP_TIMEOUT; CloseHandle( thread ); } else ret = resolve_hostname( hostname, port, sa ); if (ret) { set_last_error( ret ); return FALSE; } return TRUE; } const void *netconn_get_certificate( netconn_t *conn ) { const CERT_CONTEXT *ret; SECURITY_STATUS res; if (!conn->secure) return NULL; res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret); return res == SEC_E_OK ? ret : NULL; } int netconn_get_cipher_strength( netconn_t *conn ) { SecPkgContext_ConnectionInfo conn_info; SECURITY_STATUS res; if (!conn->secure) return 0; res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info); if(res != SEC_E_OK) WARN("QueryContextAttributesW failed: %08x\n", res); return res == SEC_E_OK ? conn_info.dwCipherStrength : 0; }