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105 lines
3.1 KiB
105 lines
3.1 KiB
/* $Id: receivedata.c,v 1.8 2017/04/21 10:16:45 nanard Exp $ */ |
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/* Project : miniupnp |
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* Website : http://miniupnp.free.fr/ |
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* Author : Thomas Bernard |
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* Copyright (c) 2011-2014 Thomas Bernard |
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* This software is subject to the conditions detailed in the |
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* LICENCE file provided in this distribution. */ |
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#include <stdio.h> |
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#include <string.h> |
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#ifdef _WIN32 |
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#include <winsock2.h> |
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#include <ws2tcpip.h> |
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#else /* _WIN32 */ |
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#include <unistd.h> |
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#if defined(__amigaos__) && !defined(__amigaos4__) |
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#define socklen_t int |
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#else /* #if defined(__amigaos__) && !defined(__amigaos4__) */ |
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#include <sys/select.h> |
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#endif /* #else defined(__amigaos__) && !defined(__amigaos4__) */ |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#if !defined(__amigaos__) && !defined(__amigaos4__) |
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#include <poll.h> |
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#endif /* !defined(__amigaos__) && !defined(__amigaos4__) */ |
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#include <errno.h> |
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#define MINIUPNPC_IGNORE_EINTR |
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#endif /* _WIN32 */ |
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#ifdef _WIN32 |
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#define PRINT_SOCKET_ERROR(x) fprintf(stderr, "Socket error: %s, %d\n", x, WSAGetLastError()); |
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#else |
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#define PRINT_SOCKET_ERROR(x) perror(x) |
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#endif |
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#include "receivedata.h" |
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int |
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receivedata(int socket, |
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char * data, int length, |
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int timeout, unsigned int * scope_id) |
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{ |
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#ifdef MINIUPNPC_GET_SRC_ADDR |
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struct sockaddr_storage src_addr; |
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socklen_t src_addr_len = sizeof(src_addr); |
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#endif /* MINIUPNPC_GET_SRC_ADDR */ |
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int n; |
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#if !defined(_WIN32) && !defined(__amigaos__) && !defined(__amigaos4__) |
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/* using poll */ |
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struct pollfd fds[1]; /* for the poll */ |
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#ifdef MINIUPNPC_IGNORE_EINTR |
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do { |
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#endif /* MINIUPNPC_IGNORE_EINTR */ |
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fds[0].fd = socket; |
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fds[0].events = POLLIN; |
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n = poll(fds, 1, timeout); |
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#ifdef MINIUPNPC_IGNORE_EINTR |
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} while(n < 0 && errno == EINTR); |
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#endif /* MINIUPNPC_IGNORE_EINTR */ |
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if(n < 0) { |
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PRINT_SOCKET_ERROR("poll"); |
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return -1; |
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} else if(n == 0) { |
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/* timeout */ |
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return 0; |
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} |
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#else /* !defined(_WIN32) && !defined(__amigaos__) && !defined(__amigaos4__) */ |
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/* using select under _WIN32 and amigaos */ |
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fd_set socketSet; |
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TIMEVAL timeval; |
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FD_ZERO(&socketSet); |
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FD_SET(socket, &socketSet); |
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timeval.tv_sec = timeout / 1000; |
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timeval.tv_usec = (timeout % 1000) * 1000; |
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n = select(FD_SETSIZE, &socketSet, NULL, NULL, &timeval); |
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if(n < 0) { |
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PRINT_SOCKET_ERROR("select"); |
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return -1; |
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} else if(n == 0) { |
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return 0; |
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} |
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#endif /* !defined(_WIN32) && !defined(__amigaos__) && !defined(__amigaos4__) */ |
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#ifdef MINIUPNPC_GET_SRC_ADDR |
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memset(&src_addr, 0, sizeof(src_addr)); |
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n = recvfrom(socket, data, length, 0, |
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(struct sockaddr *)&src_addr, &src_addr_len); |
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#else /* MINIUPNPC_GET_SRC_ADDR */ |
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n = recv(socket, data, length, 0); |
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#endif /* MINIUPNPC_GET_SRC_ADDR */ |
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if(n<0) { |
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PRINT_SOCKET_ERROR("recv"); |
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} |
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#ifdef MINIUPNPC_GET_SRC_ADDR |
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if (src_addr.ss_family == AF_INET6) { |
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const struct sockaddr_in6 * src_addr6 = (struct sockaddr_in6 *)&src_addr; |
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#ifdef DEBUG |
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printf("scope_id=%u\n", src_addr6->sin6_scope_id); |
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#endif /* DEBUG */ |
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if(scope_id) |
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*scope_id = src_addr6->sin6_scope_id; |
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} |
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#endif /* MINIUPNPC_GET_SRC_ADDR */ |
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return n; |
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} |
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