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/*
*
* Connection Manager
*
* Copyright (C) 2007-2010 Intel Corporation. All rights reserved.
*
* This program 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.
*
* This program 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; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define _GNU_SOURCE
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/sendfile.h>
#include <sys/socket.h>
#include <linux/if_alg.h>
static void build_hash(int sk, int fd, size_t size, const char *pathname)
{
unsigned char hash[20];
ssize_t written, length;
int i;
written = sendfile(sk, fd, NULL, size);
if (written < 0)
perror("Failed to write data");
printf("send %zd bytes\n", written);
length = recv(sk, hash, sizeof(hash), 0);
if (length < 0)
perror("Failed to read data");
printf("recv %zd bytes\n", length);
for (i = 0; i < length; i++)
printf("%02x", hash[i]);
printf(" %s\n", pathname);
}
static int create_hash(int sk, const char *pathname)
{
struct stat st;
int fd;
fd = open(pathname, O_RDONLY | O_CLOEXEC);
if (fd < 0)
return -1;
if (fstat(fd, &st) < 0) {
close(fd);
return -1;
}
build_hash(sk, fd, st.st_size, pathname);
close(fd);
return 0;
}
static int create_socket(void)
{
struct sockaddr_alg salg = {
.salg_family = AF_ALG,
.salg_type = "hash",
.salg_name = "sha1",
};
int sk, nsk;
sk = socket(PF_ALG, SOCK_SEQPACKET | SOCK_CLOEXEC, 0);
if (sk < 0) {
perror("Failed to create socket");
return -1;
}
if (bind(sk, (struct sockaddr *) &salg, sizeof(salg)) < 0) {
perror("Failed to bind socket");
close(sk);
return -1;
}
nsk = accept(sk, NULL, 0);
if (nsk < 0) {
perror("Failed to accept socket");
close(sk);
return -1;
}
close(sk);
return nsk;
}
int main(int argc, char *argv[])
{
int sk;
if (argc < 2) {
fprintf(stderr, "Missing argument\n");
return 1;
}
sk = create_socket();
if (sk < 0)
return 1;
create_hash(sk, argv[1]);
close(sk);
return 0;
}
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