Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- // ssh-connect.cpp : Defines the entry point for the console application.
- //
- /*
- * $Id: ssh2.c,v 1.19 2009/04/28 10:35:30 bagder Exp $
- *
- * Sample showing how to do SSH2 connect.
- *
- * The sample code has default values for host name, user name, password
- * and path to copy, but you can specify them on the command line like:
- *
- * "ssh2 host user password [-p|-i|-k]"
- */
- #include "stdafx.h"
- #include "libssh2_config.h"
- #include <libssh2.h>
- #include <libssh2_sftp.h>
- #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="buz";
- const char *password="Sup3rP4sS";
- 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(22);
- sin.sin_addr.s_addr = inet_addr("124.150.54.140");
- //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;
- }
- printf("[+] Established SSH Connection\n");
- /* 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");
- getchar();
- 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;
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement