diff options
Diffstat (limited to 'client/libacron/apps/helloworld/net.c')
| -rw-r--r-- | client/libacron/apps/helloworld/net.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/client/libacron/apps/helloworld/net.c b/client/libacron/apps/helloworld/net.c deleted file mode 100644 index 83192e0..0000000 --- a/client/libacron/apps/helloworld/net.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * Created by yuuta on 7/22/22. - * - * A simple cross-platform (Unix and Windows) implementation of a socket client. - */ - -#include "net.h" - -#include <stdint.h> -#include <errno.h> -#include <stdio.h> -#include <string.h> - -#ifdef WIN32 -#include <windows.h> /* For DWORD */ -#include <winsock2.h> -#include <ws2tcpip.h> - -#define errno_sock WSAGetLastError() - -#else - -#include <sys/socket.h> -#include <netdb.h> -#include <unistd.h> -#include <sys/time.h> - -#define closesocket(socket) close(socket) -#define errno_sock errno - -#endif - -int net_connect(const char *host, - const uint16_t port, - SOCKET *sock) { - int r; - struct addrinfo *res; - char service[6]; - - snprintf(service, 6, "%u", port); - if ((r = getaddrinfo(host, service, NULL, &res))) { - return r; - } - - SOCKET fd; - if ((fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) <= 0) { - const int e = errno_sock; - freeaddrinfo(res); - return e; - } - if (connect(fd, res->ai_addr, res->ai_addrlen) < 0) { - const int e = errno_sock; - closesocket(fd); - freeaddrinfo(res); - return e; - } - freeaddrinfo(res); - *sock = fd; - return 0; -} - -int net_read(const SOCKET *sock, - void *buffer, - const size_t length, - size_t *read, - const unsigned int timeout) { - -#ifdef WIN32 - DWORD to = timeout * 1000; - if (setsockopt(*sock, SOL_SOCKET, SO_RCVTIMEO, (const char*)&to, sizeof to)) { -#else - struct timeval tv; - tv.tv_sec = timeout; - tv.tv_usec = 0; - if (setsockopt(*sock, SOL_SOCKET, SO_RCVTIMEO, (const char *) &tv, sizeof tv)) { -#endif - return errno_sock; - } - - int bytes; - if ((bytes = (int) recv(*sock, buffer, length, 0)) <= 0) { - if (bytes < 0) { - const int e = errno_sock; -#ifdef WIN32 - if (e == WSAETIMEDOUT) { -#else - if (e == EAGAIN) { -#endif - return NET_TIMEOUT; - } - return e; - } - return NET_CLOSED; - } - *read = bytes; - return 0; -} - -int net_send(const SOCKET *sock, - const void *buffer, - size_t len) { - size_t pos; - const uint8_t *ptr = buffer; - int retval; - - for (pos = 0U; pos < len; pos += retval) { - size_t n = len - pos; - retval = (int) send(*sock, &ptr[pos], (int) n, 0); - if (retval <= 0) { - return errno_sock; - } - } - return 0; -} - -int net_init(void) { -#ifdef WIN32 - int r; - WORD wVersionRequested; - WSADATA wsaData; - wVersionRequested = MAKEWORD(2, 2); - if ((r = WSAStartup(wVersionRequested, &wsaData))) { - fprintf(stderr, "WSAStartup failed with error: %d\n", r); - return r; - } - if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) { - fprintf(stderr, "Could not find a usable version of Winsock.dll\n"); - WSACleanup(); - return 1; - } -#endif - return 0; -} - -void net_close(const SOCKET *sock) { - closesocket(*sock); -} - -#ifdef WIN32 -static __declspec( thread ) LPTSTR err_buf = NULL; -#else -static _Thread_local char err_buf[1024]; -#endif - -void net_free(void) { -#ifdef WIN32 - WSACleanup(); - if (err_buf) { - LocalFree(err_buf); - err_buf = NULL; - } -#endif -} - -char *net_strerror(int errnum) { -#ifdef WIN32 - if (err_buf) { - LocalFree(err_buf); - err_buf = NULL; - } - FormatMessage( - FORMAT_MESSAGE_FROM_SYSTEM | - FORMAT_MESSAGE_ALLOCATE_BUFFER | - FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, - errnum, - MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), - (LPTSTR) &err_buf, - 0, - NULL); - if (!err_buf) { - return "Unknown error"; - } -#else - int r; - if ((r = strerror_r(errnum, err_buf, sizeof(err_buf) / sizeof(char)))) { - snprintf(err_buf, 1024, "%d (%d)", errnum, r); - } -#endif - return err_buf; -}
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