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/* Self test, based on examples/ssh2.c. */
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINDOWS_H
# include <windows.h>
#endif
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
# ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 0;
struct sockaddr_in sin;
const char *fingerprint;
char *userauthlist;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel;
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(2,0), &wsadata);
#endif
const char *pubkeyfile="etc/user.pub";
const char *privkeyfile="etc/user";
const char *username="username";
const char *password="password";
int ec = 1;
(void)argc;
(void)argv;
if (getenv ("USER"))
username = getenv ("USER");
if (getenv ("PRIVKEY"))
privkeyfile = getenv ("PRIVKEY");
if (getenv ("PUBKEY"))
pubkeyfile = getenv ("PUBKEY");
hostaddr = htonl(0x7F000001);
sock = socket(AF_INET, SOCK_STREAM, 0);
#ifndef WIN32
fcntl(sock, F_SETFL, 0);
#endif
sin.sin_family = AF_INET;
sin.sin_port = htons(4711);
sin.sin_addr.s_addr = hostaddr;
if (connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance and start it up
* This will trade welcome banners, exchange keys, and setup crypto, compression, and MAC layers
*/
session = libssh2_session_init();
if (libssh2_session_startup(session, sock)) {
fprintf(stderr, "Failure establishing SSH session\n");
return -1;
}
/* At this point we havn't authenticated,
* The first thing to do is check the hostkey's fingerprint against our known hosts
* Your app may have it hard coded, may go to a file, may present it to the user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
printf("Fingerprint: ");
for(i = 0; i < 20; i++) {
printf("%02X ", (unsigned char)fingerprint[i]);
}
printf("\n");
/* check what authentication methods are available */
userauthlist = libssh2_userauth_list(session, username, strlen(username));
printf("Authentication methods: %s\n", userauthlist);
if (strstr(userauthlist, "password") != NULL) {
auth_pw |= 1;
}
if (strstr(userauthlist, "keyboard-interactive") != NULL) {
auth_pw |= 2;
}
if (strstr(userauthlist, "publickey") != NULL) {
auth_pw |= 4;
}
if (auth_pw & 4) {
/* Authenticate by public key */
if (libssh2_userauth_publickey_fromfile(session, username, pubkeyfile, privkeyfile, password)) {
printf("\tAuthentication by public key failed!\n");
goto shutdown;
} else {
printf("\tAuthentication by public key succeeded.\n");
}
} else {
printf("No supported authentication methods found!\n");
goto shutdown;
}
/* Request a shell */
if (!(channel = libssh2_channel_open_session(session))) {
fprintf(stderr, "Unable to open a session\n");
goto shutdown;
}
/* Some environment variables may be set,
* It's up to the server which ones it'll allow though
*/
libssh2_channel_setenv(channel, "FOO", "bar");
/* Request a terminal with 'vanilla' terminal emulation
* See /etc/termcap for more options
*/
if (libssh2_channel_request_pty(channel, "vanilla")) {
fprintf(stderr, "Failed requesting pty\n");
goto skip_shell;
}
/* Open a SHELL on that pty */
if (libssh2_channel_shell(channel)) {
fprintf(stderr, "Unable to request shell on allocated pty\n");
goto shutdown;
}
ec = 0;
skip_shell:
if (channel) {
libssh2_channel_free(channel);
channel = NULL;
}
shutdown:
libssh2_session_disconnect(session, "Normal Shutdown");
libssh2_session_free(session);
#ifdef WIN32
Sleep(1000);
closesocket(sock);
#else
sleep(1);
close(sock);
#endif
return ec;
}
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