7ed53e21fd
Propagate for the current function in docs and examples. libssh2_session_startup() is deprecated.
238 lines
6.5 KiB
C
238 lines
6.5 KiB
C
/*
|
|
* Sample doing an SFTP directory listing.
|
|
*
|
|
* The sample code has default values for host name, user name, password and
|
|
* path, but you can specify them on the command line like:
|
|
*
|
|
* "sftpdir 192.168.0.1 user password /tmp/secretdir"
|
|
*/
|
|
|
|
#include "libssh2_config.h"
|
|
#include <libssh2.h>
|
|
#include <libssh2_sftp.h>
|
|
|
|
#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 <ctype.h>
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
unsigned long hostaddr;
|
|
int sock, i, auth_pw = 1;
|
|
struct sockaddr_in sin;
|
|
const char *fingerprint;
|
|
LIBSSH2_SESSION *session;
|
|
const char *username="username";
|
|
const char *password="password";
|
|
const char *sftppath="/tmp/secretdir";
|
|
int rc;
|
|
#if defined(HAVE_IOCTLSOCKET)
|
|
long flag = 1;
|
|
#endif
|
|
LIBSSH2_SFTP *sftp_session;
|
|
LIBSSH2_SFTP_HANDLE *sftp_handle;
|
|
|
|
#ifdef WIN32
|
|
WSADATA wsadata;
|
|
|
|
WSAStartup(MAKEWORD(2,0), &wsadata);
|
|
#endif
|
|
|
|
if (argc > 1) {
|
|
hostaddr = inet_addr(argv[1]);
|
|
} else {
|
|
hostaddr = htonl(0x7F000001);
|
|
}
|
|
|
|
if(argc > 2) {
|
|
username = argv[2];
|
|
}
|
|
if(argc > 3) {
|
|
password = argv[3];
|
|
}
|
|
if(argc > 4) {
|
|
sftppath = argv[4];
|
|
}
|
|
|
|
rc = libssh2_init (0);
|
|
if (rc != 0) {
|
|
fprintf (stderr, "libssh2 initialization failed (%d)\n", rc);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* The application code is responsible for creating the socket
|
|
* and establishing the connection
|
|
*/
|
|
sock = socket(AF_INET, SOCK_STREAM, 0);
|
|
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_port = htons(22);
|
|
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
|
|
*/
|
|
session = libssh2_session_init();
|
|
if(!session)
|
|
return -1;
|
|
|
|
/* Since we have set non-blocking, tell libssh2 we are non-blocking */
|
|
libssh2_session_set_blocking(session, 0);
|
|
|
|
/* ... start it up. This will trade welcome banners, exchange keys,
|
|
* and setup crypto, compression, and MAC layers
|
|
*/
|
|
while ((rc = libssh2_session_handshake(session, sock)) ==
|
|
LIBSSH2_ERROR_EAGAIN);
|
|
if(rc) {
|
|
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
|
|
return -1;
|
|
}
|
|
|
|
/* At this point we havn't yet 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");
|
|
|
|
if (auth_pw) {
|
|
/* We could authenticate via password */
|
|
while ((rc = libssh2_userauth_password(session, username, password)) ==
|
|
LIBSSH2_ERROR_EAGAIN);
|
|
if (rc) {
|
|
fprintf(stderr, "Authentication by password failed.\n");
|
|
goto shutdown;
|
|
}
|
|
} else {
|
|
/* Or by public key */
|
|
while ((rc = libssh2_userauth_publickey_fromfile(session, username,
|
|
"/home/username/.ssh/id_rsa.pub",
|
|
"/home/username/.ssh/id_rsa",
|
|
password)) == LIBSSH2_ERROR_EAGAIN);
|
|
if (rc) {
|
|
fprintf(stderr, "\tAuthentication by public key failed\n");
|
|
goto shutdown;
|
|
}
|
|
}
|
|
|
|
fprintf(stderr, "libssh2_sftp_init()!\n");
|
|
do {
|
|
sftp_session = libssh2_sftp_init(session);
|
|
|
|
if ((!sftp_session) && (libssh2_session_last_errno(session) !=
|
|
LIBSSH2_ERROR_EAGAIN)) {
|
|
fprintf(stderr, "Unable to init SFTP session\n");
|
|
goto shutdown;
|
|
}
|
|
} while (!sftp_session);
|
|
|
|
fprintf(stderr, "libssh2_sftp_opendir()!\n");
|
|
/* Request a dir listing via SFTP */
|
|
do {
|
|
sftp_handle = libssh2_sftp_opendir(sftp_session, sftppath);
|
|
|
|
if ((!sftp_handle) && (libssh2_session_last_errno(session) !=
|
|
LIBSSH2_ERROR_EAGAIN)) {
|
|
fprintf(stderr, "Unable to open dir with SFTP\n");
|
|
goto shutdown;
|
|
}
|
|
} while (!sftp_handle);
|
|
|
|
fprintf(stderr, "libssh2_sftp_opendir() is done, now receive listing!\n");
|
|
do {
|
|
char mem[512];
|
|
LIBSSH2_SFTP_ATTRIBUTES attrs;
|
|
|
|
/* loop until we fail */
|
|
while ((rc = libssh2_sftp_readdir(sftp_handle, mem, sizeof(mem),
|
|
&attrs)) == LIBSSH2_ERROR_EAGAIN) {
|
|
;
|
|
}
|
|
if(rc > 0) {
|
|
/* rc is the length of the file name in the mem
|
|
buffer */
|
|
|
|
if(attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) {
|
|
/* this should check what permissions it
|
|
is and print the output accordingly */
|
|
printf("--fix----- ");
|
|
} else {
|
|
printf("---------- ");
|
|
}
|
|
|
|
if(attrs.flags & LIBSSH2_SFTP_ATTR_UIDGID) {
|
|
printf("%4ld %4ld ", attrs.uid, attrs.gid);
|
|
} else {
|
|
printf(" - - ");
|
|
}
|
|
|
|
if(attrs.flags & LIBSSH2_SFTP_ATTR_SIZE) {
|
|
/* attrs.filesize is an uint64_t according to
|
|
the docs but there is no really good and
|
|
portable 64bit type for C before C99, and
|
|
correspondingly there was no good printf()
|
|
option for it... */
|
|
|
|
printf("%8lld ", attrs.filesize);
|
|
}
|
|
|
|
printf("%s\n", mem);
|
|
}
|
|
else if (rc == LIBSSH2_ERROR_EAGAIN) {
|
|
/* blocking */
|
|
fprintf(stderr, "Blocking\n");
|
|
} else {
|
|
break;
|
|
}
|
|
|
|
} while (1);
|
|
|
|
libssh2_sftp_closedir(sftp_handle);
|
|
libssh2_sftp_shutdown(sftp_session);
|
|
|
|
shutdown:
|
|
|
|
libssh2_session_disconnect(session, "Normal Shutdown, Thank you for playing");
|
|
libssh2_session_free(session);
|
|
|
|
#ifdef WIN32
|
|
closesocket(sock);
|
|
#else
|
|
close(sock);
|
|
#endif
|
|
printf("all done\n");
|
|
|
|
libssh2_exit();
|
|
|
|
return 0;
|
|
}
|