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c65f56aefa
git-svn-id: svn+ssh://svn.berlios.de/svnroot/repos/libssh/trunk@1 7dcaeef0-15fb-0310-b436-a5af3365683c
129 lines
3.6 KiB
C
129 lines
3.6 KiB
C
/* server.c */
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/* No. It doesn't work yet. It's just hard to have 2 separated trees, one for releases
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* and one for development */
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/*
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Copyright 2004 Aris Adamantiadis
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This file is part of the SSH Library
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The SSH Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The SSH Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the SSH Library; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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/* from times to times, you need to serve your friends */
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/* and, perhaps, ssh connections. */
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#ifdef WITH_SERVER
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <errno.h>
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#include <string.h>
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#include "libssh/libssh.h"
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#include "libssh/server.h"
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int bind_socket() {
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struct sockaddr_in myaddr;
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int opt = 1;
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int s = socket(PF_INET, SOCK_STREAM, 0);
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memset(&myaddr, 0, sizeof(myaddr));
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myaddr.sin_family = AF_INET;
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myaddr.sin_port = htons(2222);
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setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
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if (bind(s, (struct sockaddr *) &myaddr, sizeof(myaddr)) < 0) {
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ssh_set_error(NULL, SSH_FATAL, "%s", strerror(errno));
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return -1;
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}
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/* ok, bound */
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return s;
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}
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int listen_socket(int socket) {
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int i = listen(socket, 1);
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if (i < 0)
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ssh_set_error(NULL, SSH_FATAL, "listening on %d : %s",
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strerror(errno));
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return i;
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}
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int accept_socket(int socket) {
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int i = accept(socket, NULL, NULL);
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if (i < 0)
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ssh_set_error(NULL, SSH_FATAL, "accepting client on socket %d : %s",
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strerror(errno));
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return i;
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}
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SSH_SESSION *getserver(SSH_OPTIONS * options) {
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int socket;
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int fd;
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SSH_SESSION *session;
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socket = bind_socket();
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if (socket < 0)
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return NULL;
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if (listen_socket(socket) < 0)
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return NULL;
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fd = accept_socket(socket);
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close(socket);
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if (fd < 0) {
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return NULL;
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}
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session = malloc(sizeof(SSH_SESSION));
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memset(session, 0, sizeof(SSH_SESSION));
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session->fd = fd;
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session->options = options;
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ssh_send_banner(session);
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return session;
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}
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extern char *supported_methods[];
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int server_set_kex(SSH_SESSION * session) {
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KEX *server = &session->server_kex;
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SSH_OPTIONS *options = session->options;
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int i;
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char *wanted;
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if (!options) {
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ssh_set_error(session, SSH_FATAL,
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"Options structure is null(client's bug)");
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return -1;
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}
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memset(server,0,sizeof(KEX));
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/* the program might ask for a specific cookie to be sent. useful for server
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debugging */
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if (options->wanted_cookie)
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memcpy(server->cookie, options->wanted_cookie, 16);
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else
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ssh_get_random(server->cookie, 16);
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server->methods = malloc(10 * sizeof(char **));
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for (i = 0; i < 10; i++) {
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if (!(wanted = options->wanted_methods[i]))
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wanted = supported_methods[i];
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server->methods[i] = wanted;
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printf("server->methods[%d]=%s\n",i,wanted);
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if (!server->methods[i]) {
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ssh_set_error(session, SSH_FATAL,
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"kex error : did not find algo");
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return -1;
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}
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return 0;
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}
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#endif /* HAVE_SERVER */
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