// This file is part of BOINC. // http://boinc.berkeley.edu // Copyright (C) 2008 University of California // // BOINC 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 3 of the License, or (at your option) any later version. // // BOINC 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 BOINC. If not, see . #if defined(_WIN32) && !defined(__STDWX_H__) && !defined(_BOINC_WIN_) && !defined(_AFX_STDAFX_H_) #include "boinc_win.h" #endif #ifndef _WIN32 #include "config.h" #include #include #include #include #include #include #include #include #include #endif #include "error_numbers.h" #include "network.h" const char* socket_error_str() { static char buf[80]; #if defined(_WIN32) && defined(USE_WINSOCK) int e = WSAGetLastError(); switch (e) { case WSANOTINITIALISED: return "WSA not initialized"; case WSAENETDOWN: return "the network subsystem has failed"; case WSAHOST_NOT_FOUND: return "host name not found"; case WSATRY_AGAIN: return "no response from server"; case WSANO_RECOVERY: return "a nonrecoverable error occurred"; case WSANO_DATA: return "valid name, no data record of requested type"; case WSAEINPROGRESS: return "a blocking socket call in progress"; case WSAEFAULT: return "invalid part of user address space"; case WSAEINTR: return "a blocking socket call was canceled"; case WSAENOTSOCK: return "not a socket"; } sprintf(buf, "error %d", e); return buf; #else switch (h_errno) { case HOST_NOT_FOUND: return "host not found"; case NO_DATA: return "valid name, no data record of requested type"; case NO_RECOVERY: return "a nonrecoverable error occurred"; case TRY_AGAIN: return "host not found or server failure"; #ifdef NETDB_INTERNAL case NETDB_INTERNAL: sprintf(buf,"network internal error %d",errno); return buf; #endif } sprintf(buf, "error %d", h_errno); return buf; #endif } int resolve_hostname(char* hostname, int &ip_addr) { // if the hostname is in Internet Standard dotted notation, // return that address. // ip_addr = inet_addr(hostname); if (ip_addr != -1) { return 0; } // else resolve the name // hostent* hep; hep = gethostbyname(hostname); if (!hep) { return ERR_GETHOSTBYNAME; } ip_addr = *(int*)hep->h_addr_list[0]; return 0; } int boinc_socket(int& fd) { fd = (int)socket(AF_INET, SOCK_STREAM, 0); if (fd < 0) { perror("socket"); return ERR_SOCKET; } #ifndef _WIN32 fcntl(fd, F_SETFD, FD_CLOEXEC); #endif return 0; } int boinc_socket_asynch(int fd, bool asynch) { if (asynch) { #if defined(_WIN32) && defined(USE_WINSOCK) unsigned long one = 1; ioctlsocket(fd, FIONBIO, &one); #else int flags; flags = fcntl(fd, F_GETFL, 0); if (flags < 0) { return ERR_FCNTL; } if (fcntl(fd, F_SETFL, flags|O_NONBLOCK) < 0 ) { return ERR_FCNTL; } #endif } else { #if defined(_WIN32) && defined(USE_WINSOCK) unsigned long zero = 0; ioctlsocket(fd, FIONBIO, &zero); #else int flags; flags = fcntl(fd, F_GETFL, 0); if (flags < 0) { return ERR_FCNTL; } if (fcntl(fd, F_SETFL, flags&(~O_NONBLOCK)) < 0 ) { return ERR_FCNTL; } #endif } return 0; } void boinc_close_socket(int sock) { #if defined(_WIN32) && defined(USE_WINSOCK) closesocket(sock); #else close(sock); #endif } int get_socket_error(int fd) { boinc_socklen_t intsize = sizeof(int); int n; #if defined(_WIN32) && defined(USE_WINSOCK) getsockopt(fd, SOL_SOCKET, SO_ERROR, (char *)&n, &intsize); #elif defined(__FreeBSD__) // workaround for FreeBSD. I don't understand this. struct sockaddr_in sin; socklen_t sinsz = sizeof(sin); n = getpeername(fd, (struct sockaddr *)&sin, &sinsz); #else getsockopt(fd, SOL_SOCKET, SO_ERROR, (void*)&n, (socklen_t*)&intsize); #endif return n; } #if defined(_WIN32) && defined(USE_WINSOCK) int WinsockInitialize() { WSADATA wsdata; return WSAStartup( MAKEWORD( 1, 1 ), &wsdata); } int WinsockCleanup() { return WSACleanup(); } #endif const char *BOINC_RCSID_557bf0741f="$Id$";