331 lines
8.5 KiB
C
331 lines
8.5 KiB
C
/*
|
|
* JoeyDev
|
|
* Copyright (C) 2018-2023 Scott Duensing <scott@kangaroopunch.com>
|
|
*
|
|
* This software is provided 'as-is', without any express or implied
|
|
* warranty. In no event will the authors be held liable for any damages
|
|
* arising from the use of this software.
|
|
*
|
|
* Permission is granted to anyone to use this software for any purpose,
|
|
* including commercial applications, and to alter it and redistribute it
|
|
* freely, subject to the following restrictions:
|
|
*
|
|
* 1. The origin of this software must not be misrepresented; you must not
|
|
* claim that you wrote the original software. If you use this software
|
|
* in a product, an acknowledgment in the product documentation would be
|
|
* appreciated but is not required.
|
|
* 2. Altered source versions must be plainly marked as such, and must not be
|
|
* misrepresented as being the original software.
|
|
* 3. This notice may not be removed or altered from any source distribution.
|
|
*/
|
|
|
|
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <netdb.h>
|
|
|
|
#include "ssh.h"
|
|
#include "utils.h"
|
|
#include "array.h"
|
|
|
|
|
|
#ifdef _WIN32
|
|
#define socketclose closesocket
|
|
closesocket(data->sock);
|
|
#else
|
|
#define socketclose close
|
|
#endif
|
|
|
|
|
|
static SSHT **_activeSSHs = NULL;
|
|
static char *_output = NULL;
|
|
static int _outputLen = 0;
|
|
static char *_buffer = NULL;
|
|
static int _bufferLen = 0;
|
|
|
|
|
|
gboolean sshUpdate(gpointer userData); // Not static
|
|
static int sshWaitSocket(int socket_fd, LIBSSH2_SESSION *session);
|
|
|
|
|
|
SSHT *sshConnect(char *hostname, uint16_t port, char *user, char *password) {
|
|
int rc;
|
|
struct hostent *hostent;
|
|
struct sockaddr_in sin;
|
|
in_addr_t hostaddr;
|
|
SSHT *data = NULL;
|
|
|
|
hostent = gethostbyname(hostname);
|
|
if (hostent == NULL) {
|
|
debug("gethostbyname() failed.\n");
|
|
return NULL;
|
|
}
|
|
|
|
hostaddr = inet_addr(inet_ntoa(*(struct in_addr*)*(hostent->h_addr_list)));
|
|
if (hostaddr == (in_addr_t)-1) {
|
|
debug("inet_addr() failed.\n");
|
|
return NULL;
|
|
}
|
|
|
|
data = NEW(SSHT);
|
|
|
|
if (data) {
|
|
data->sock = socket(AF_INET, SOCK_STREAM, 0);
|
|
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_port = htons(port);
|
|
sin.sin_addr.s_addr = hostaddr;
|
|
if (connect(data->sock, (struct sockaddr*)(&sin), sizeof(struct sockaddr_in)) != 0) {
|
|
debug("connect() failed: %d\n", errno);
|
|
DEL(data);
|
|
return NULL;
|
|
}
|
|
|
|
data->session = libssh2_session_init();
|
|
if (!data->session) {
|
|
socketclose(data->sock);
|
|
DEL(data);
|
|
return NULL;
|
|
}
|
|
|
|
libssh2_session_set_blocking(data->session, 0);
|
|
|
|
while ((rc = libssh2_session_handshake(data->session, data->sock)) == LIBSSH2_ERROR_EAGAIN)
|
|
;
|
|
if (rc) {
|
|
debug("Failure establishing SSH session: %d\n", rc);
|
|
libssh2_session_free(data->session);
|
|
socketclose(data->sock);
|
|
DEL(data);
|
|
return NULL;
|
|
}
|
|
|
|
while ((rc = libssh2_userauth_password(data->session, user, password)) == LIBSSH2_ERROR_EAGAIN)
|
|
;
|
|
if (rc) {
|
|
debug("Failure authenticating SSH session: %d\n", rc);
|
|
while (libssh2_session_disconnect(data->session, "Error") == LIBSSH2_ERROR_EAGAIN)
|
|
;
|
|
libssh2_session_free(data->session);
|
|
socketclose(data->sock);
|
|
DEL(data);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
|
|
void sshDisconnect(SSHT **sshData) {
|
|
SSHT *data = *sshData;
|
|
|
|
libssh2_session_disconnect(data->session, "Normal Shutdown.");
|
|
libssh2_session_free(data->session);
|
|
socketclose(data->sock);
|
|
|
|
DEL(data);
|
|
}
|
|
|
|
|
|
int sshExecute(SSHT *sshData, char *command, char **output) {
|
|
int rc;
|
|
int exitcode = 127;
|
|
char *exitsignal = (char *)"none";
|
|
int outputLen = 0;
|
|
|
|
utilEnsureBufferSize((unsigned char **)output, &outputLen, 1024);
|
|
*output[0] = 0;
|
|
|
|
while ((sshData->channel = libssh2_channel_open_session(sshData->session)) == NULL && libssh2_session_last_error(sshData->session, NULL, NULL, 0) == LIBSSH2_ERROR_EAGAIN) {
|
|
sshWaitSocket(sshData->sock, sshData->session);
|
|
}
|
|
if (sshData->channel == NULL) {
|
|
return exitcode;
|
|
}
|
|
while ((rc = libssh2_channel_exec(sshData->channel, command)) == LIBSSH2_ERROR_EAGAIN) {
|
|
sshWaitSocket(sshData->sock, sshData->session);
|
|
}
|
|
if (rc != 0) {
|
|
return exitcode;
|
|
}
|
|
|
|
for (;;) {
|
|
do {
|
|
rc = libssh2_channel_read(sshData->channel, (char *)_buffer, sizeof(_buffer));
|
|
if (rc > 0) {
|
|
utilEnsureBufferSize((unsigned char **)output, &outputLen, (int)strlen((const char *)*output) + rc + 1);
|
|
strncat(*output, (char *)_buffer, rc);
|
|
}
|
|
} while (rc > 0);
|
|
|
|
if (rc == LIBSSH2_ERROR_EAGAIN) {
|
|
sshWaitSocket(sshData->sock, sshData->session);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
while ((rc = libssh2_channel_close(sshData->channel)) == LIBSSH2_ERROR_EAGAIN) {
|
|
sshWaitSocket(sshData->sock, sshData->session);
|
|
}
|
|
if (rc == 0) {
|
|
exitcode = libssh2_channel_get_exit_status(sshData->channel);
|
|
libssh2_channel_get_exit_signal(sshData->channel, &exitsignal, NULL, NULL, NULL, NULL, NULL);
|
|
}
|
|
|
|
libssh2_channel_free(sshData->channel);
|
|
|
|
return exitcode;
|
|
}
|
|
|
|
|
|
SSHT *sshExecuteVerbose(SSHT *sshData, char *title, char *command, SSHCallback callback) {
|
|
int rc;
|
|
|
|
sshData->title = strdup(title);
|
|
sshData->callback = callback;
|
|
sshData->finished = FALSE;
|
|
|
|
while ((sshData->channel = libssh2_channel_open_session(sshData->session)) == NULL && libssh2_session_last_error(sshData->session, NULL, NULL, 0) == LIBSSH2_ERROR_EAGAIN) {
|
|
sshWaitSocket(sshData->sock, sshData->session);
|
|
}
|
|
if (sshData->channel == NULL) {
|
|
return NULL;
|
|
}
|
|
while ((rc = libssh2_channel_exec(sshData->channel, command)) == LIBSSH2_ERROR_EAGAIN) {
|
|
sshWaitSocket(sshData->sock, sshData->session);
|
|
}
|
|
if (rc != 0) {
|
|
return NULL;
|
|
}
|
|
|
|
//***TODO*** SSH Progress Dialog Here
|
|
//sshData->status = new SSHStatus(sshData);
|
|
arrpush(_activeSSHs, sshData);
|
|
|
|
return sshData;
|
|
}
|
|
|
|
|
|
void sshShutdown(void) {
|
|
//***TODO*** Any active sessions?
|
|
|
|
g_idle_remove_by_data(sshUpdate);
|
|
|
|
DEL(_output);
|
|
DEL(_buffer);
|
|
|
|
libssh2_exit();
|
|
}
|
|
|
|
|
|
void sshStartup(void) {
|
|
int err;
|
|
|
|
#ifdef WIN32
|
|
err = WSAStartup(MAKEWORD(2, 0), &_wsadata);
|
|
if (err != 0) {
|
|
printf("WSAStartup failed with error: %d\n", err);
|
|
}
|
|
#endif
|
|
|
|
err = libssh2_init(0);
|
|
if (err != 0) {
|
|
printf("libssh2 initialization failed: %d\n", err);
|
|
}
|
|
|
|
utilEnsureBufferSize((unsigned char **)&_output, &_outputLen, 1024);
|
|
utilEnsureBufferSize((unsigned char **)&_buffer, &_bufferLen, 0x4000);
|
|
|
|
g_idle_add(sshUpdate, sshUpdate);
|
|
}
|
|
|
|
|
|
gboolean sshUpdate(gpointer userData) {
|
|
int rc;
|
|
int exitcode = 127;
|
|
char *exitsignal = (char *)"none";
|
|
SSHT *s;
|
|
int i;
|
|
|
|
(void)userData;
|
|
|
|
_output[0] = 0;
|
|
|
|
for (i=0; i<arrlen(_activeSSHs); i++) {
|
|
s = _activeSSHs[i];
|
|
if (!s->finished) {
|
|
rc = libssh2_channel_read(s->channel, _buffer, sizeof(_buffer));
|
|
if (rc > 0) {
|
|
utilEnsureBufferSize((unsigned char **)&_output, &_outputLen, rc + 1);
|
|
_output[0] = 0;
|
|
strncat(_output, (char *)_buffer, rc);
|
|
//***TODO*** Display in status dialog
|
|
//s->status->AddOutput(output);
|
|
} else {
|
|
if (rc == LIBSSH2_ERROR_EAGAIN) {
|
|
sshWaitSocket(s->sock, s->session);
|
|
} else {
|
|
while ((rc = libssh2_channel_close(s->channel)) == LIBSSH2_ERROR_EAGAIN) {
|
|
sshWaitSocket(s->sock, s->session);
|
|
}
|
|
DEL(_output);
|
|
_output = strdup("\n\nUH OH! Something wrong happened. Check the output for errors.");
|
|
if (rc == 0) {
|
|
exitcode = libssh2_channel_get_exit_status(s->channel);
|
|
libssh2_channel_get_exit_signal(s->channel, &exitsignal, NULL, NULL, NULL, NULL, NULL);
|
|
if (exitcode == 0) {
|
|
DEL(_output);
|
|
_output = strdup("\n\nFINISHED! You can close this window anytime.");
|
|
}
|
|
}
|
|
//***TODO*** Display in status dialog
|
|
//s->status->AddOutput(output);
|
|
libssh2_channel_free(s->channel);
|
|
s->result = exitcode;
|
|
//s->finished = true;
|
|
//s->status->Finished(); // No close
|
|
if (s->callback) s->callback(s);
|
|
arrdel(_activeSSHs, i);
|
|
break; // Exit for loop
|
|
// We don't delete "s" because it will be handled by utilSSHDisconnect
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return G_SOURCE_CONTINUE;
|
|
}
|
|
|
|
|
|
static int sshWaitSocket(int socket_fd, LIBSSH2_SESSION *session) {
|
|
struct timeval timeout;
|
|
int rc;
|
|
fd_set fd;
|
|
fd_set *writefd = NULL;
|
|
fd_set *readfd = NULL;
|
|
int dir;
|
|
|
|
timeout.tv_sec = 10;
|
|
timeout.tv_usec = 0;
|
|
|
|
FD_ZERO(&fd);
|
|
FD_SET(socket_fd, &fd);
|
|
|
|
// Make sure we wait in the correct direction.
|
|
dir = libssh2_session_block_directions(session);
|
|
|
|
if (dir & LIBSSH2_SESSION_BLOCK_INBOUND) {
|
|
readfd = &fd;
|
|
}
|
|
|
|
if (dir & LIBSSH2_SESSION_BLOCK_OUTBOUND) {
|
|
writefd = &fd;
|
|
}
|
|
|
|
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
|
|
|
|
return rc;
|
|
}
|