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#include "socket.h"
#include "log.h"
#include <string.h>
#include <stdio.h>
#include <assert.h>
#if defined(_WIN32)
#include "win32.h"
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/select.h>
#include <netdb.h>
#include <unistd.h>
#include <arpa/inet.h>
#endif
#if defined(_WIN32)
static int InitializeWsa()
{
WSADATA wsa;
int rc;
if ((rc = WSAStartup(MAKEWORD(2, 2), &wsa)) != 0)
{
LOG_ERROR("WSAStartup failed: %d", rc);
return -1;
}
return 0;
}
#define close closesocket
#endif
int SocketConnect(const char *host, short port)
{
struct addrinfo hints, *servinfo, *p = NULL;
int rv;
char portstr[6];
int sock;
#if defined(_WIN32)
if (InitializeWsa() != 0)
{
return -1;
}
#endif
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
assert(snprintf(portstr, sizeof(portstr), "%hu", port) < (int) sizeof(portstr));
if ((rv = getaddrinfo(host, portstr, &hints, &servinfo)) != 0)
{
goto cleanup;
}
for (p = servinfo; p != NULL; p = p->ai_next)
{
if ((sock = socket(p->ai_family, p->ai_socktype,
p->ai_protocol)) == -1)
{
continue;
}
if (connect(sock, p->ai_addr, p->ai_addrlen) == -1)
{
close(sock);
continue;
}
break;
}
freeaddrinfo(servinfo);
cleanup:
if (p == NULL)
{
#if defined(_WIN32)
WSACleanup();
#endif
return -1;
}
return sock;
}
int SocketDisconnect(int sock)
{
int rc = close(sock);
#if defined(_WIN32)
WSACleanup();
#endif
return rc;
}
int SocketSendAll(int sock, const char *buf, size_t *len)
{
size_t total = 0;
int rv;
size_t remaining = *len;
while (remaining > 0)
{
if ((rv = send(sock, buf+total, remaining, 0)) == -1)
{
break;
}
total += rv;
remaining -= rv;
}
*len = total;
return rv == -1 ? -1 : 0;
}
int SocketSelect(int sock, int *events, int timeout)
{
fd_set rfd, wfd;
struct timeval tv;
int rv;
assert(sock != -1);
assert(events != NULL);
assert(*events != 0);
FD_ZERO(&rfd);
FD_ZERO(&wfd);
if (*events & EV_READ)
{
FD_SET(sock, &rfd);
}
if (*events & EV_WRITE)
{
FD_SET(sock, &wfd);
}
memset(&tv, 0, sizeof(tv));
tv.tv_sec = timeout;
tv.tv_usec = 0;
*events = 0;
rv = select(sock+1, &rfd, &wfd, NULL, &tv);
if (rv < 0)
{
return rv;
}
if (FD_ISSET(sock, &wfd))
{
*events = EV_WRITE;
}
if (FD_ISSET(sock, &rfd))
{
*events = EV_READ;
}
return rv;
}
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