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/*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* as published by the Free Software Foundation.
*
* In addition to the permissions in the GNU General Public License,
* the authors give you unlimited permission to link the compiled
* version of this file into combinations with other programs,
* and to distribute those combinations without any restriction
* coming from the use of this file. (The General Public License
* restrictions do apply in other respects; for example, they cover
* modification of the file, and distribution when not linked into
* a combined executable.)
*
* This file 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef _WIN32
# include <sys/types.h>
# include <sys/socket.h>
# include <sys/select.h>
# include <netdb.h>
#else
# define _WIN32_WINNT 0x0501
# include <winsock2.h>
# include <Ws2tcpip.h>
# pragma comment(lib, "Ws2_32.lib")
#endif
#include "git2/errors.h"
#include "common.h"
#include "netops.h"
void gitno_buffer_setup(gitno_buffer *buf, char *data, unsigned int len, int fd)
{
memset(buf, 0x0, sizeof(gitno_buffer));
memset(data, 0x0, len);
buf->data = data;
buf->len = len - 1;
buf->offset = 0;
buf->fd = fd;
}
int gitno_recv(gitno_buffer *buf)
{
int ret;
ret = recv(buf->fd, buf->data + buf->offset, buf->len - buf->offset, 0);
if (ret < 0)
return git__throw(GIT_EOSERR, "Failed to receive data: %s", strerror(errno));
if (ret == 0) /* Orderly shutdown, so exit */
return GIT_SUCCESS;
buf->offset += ret;
return ret;
}
/* Consume up to ptr and move the rest of the buffer to the beginning */
void gitno_consume(gitno_buffer *buf, const char *ptr)
{
size_t consumed;
assert(ptr - buf->data >= 0);
assert(ptr - buf->data <= (int) buf->len);
consumed = ptr - buf->data;
memmove(buf->data, ptr, buf->offset - consumed);
memset(buf->data + buf->offset, 0x0, buf->len - buf->offset);
buf->offset -= consumed;
}
/* Consume const bytes and move the rest of the buffer to the beginning */
void gitno_consume_n(gitno_buffer *buf, size_t cons)
{
memmove(buf->data, buf->data + cons, buf->len - buf->offset);
memset(buf->data + cons, 0x0, buf->len - buf->offset);
buf->offset -= cons;
}
int gitno_connect(const char *host, const char *port)
{
struct addrinfo *info, *p;
struct addrinfo hints;
int ret, error = GIT_SUCCESS;
int s;
memset(&hints, 0x0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
ret = getaddrinfo(host, port, &hints, &info);
if (ret != 0) {
error = GIT_EOSERR;
goto cleanup;
}
for (p = info; p != NULL; p = p->ai_next) {
s = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
if (s < 0) {
error = GIT_EOSERR;
goto cleanup;
}
ret = connect(s, p->ai_addr, p->ai_addrlen);
/* If we can't connect, try the next one */
if (ret < 0) {
continue;
}
/* Return the socket */
error = s;
goto cleanup;
}
/* Oops, we couldn't connect to any address */
error = GIT_EOSERR;
cleanup:
freeaddrinfo(info);
return error;
}
int gitno_send(int s, const char *msg, size_t len, int flags)
{
int ret;
size_t off = 0;
while (off < len) {
ret = send(s, msg + off, len - off, flags);
if (ret < 0)
return GIT_EOSERR;
off += ret;
}
return off;
}
int gitno_select_in(gitno_buffer *buf, long int sec, long int usec)
{
fd_set fds;
struct timeval tv;
tv.tv_sec = sec;
tv.tv_usec = usec;
FD_ZERO(&fds);
FD_SET(buf->fd, &fds);
/* The select(2) interface is silly */
return select(buf->fd + 1, &fds, NULL, NULL, &tv);
}
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