* There is also code for initiating connection forwarding for X11 connections,
* arbitrary tcp/ip connections, and the authentication agent connection.
*
+ * SSH2 support added by Markus Friedl.
*/
#include "includes.h"
-RCSID("$Id: channels.c,v 1.43 2000/03/28 20:39:05 markus Exp $");
+RCSID("$Id: channels.c,v 1.44 2000/04/03 07:07:15 markus Exp $");
#include "ssh.h"
#include "packet.h"
#include "nchan.h"
#include "compat.h"
+#include "ssh2.h"
+
/* Maximum number of fake X11 displays to try. */
#define MAX_DISPLAYS 1000
/* Do initial allocation if this is the first call. */
if (channels_alloc == 0) {
+ chan_init();
channels_alloc = 10;
channels = xmalloc(channels_alloc * sizeof(Channel));
for (i = 0; i < channels_alloc; i++)
if (c == NULL)
packet_disconnect("channel free: bad local channel %d", id);
debug("channel_free: channel %d: status: %s", id, channel_open_message());
+ if (c->dettach_user != NULL) {
+ debug("channel_free: channel %d: dettaching channel user", id);
+ c->dettach_user(c->self, NULL);
+ }
if (c->sock != -1) {
shutdown(c->sock, SHUT_RDWR);
close(c->sock);
+ c->sock = -1;
+ }
+ if (compat20) {
+ if (c->rfd != -1) {
+ close(c->rfd);
+ c->rfd = -1;
+ }
+ if (c->wfd != -1) {
+ close(c->wfd);
+ c->wfd = -1;
+ }
+ if (c->efd != -1) {
+ close(c->efd);
+ c->efd = -1;
+ }
}
buffer_free(&c->input);
buffer_free(&c->output);
}
}
+void
+channel_pre_open_20(Channel *c, fd_set * readset, fd_set * writeset)
+{
+ if (c->istate == CHAN_INPUT_OPEN &&
+ c->remote_window > 0 &&
+ buffer_len(&c->input) < c->remote_window)
+ FD_SET(c->rfd, readset);
+ if (c->ostate == CHAN_OUTPUT_OPEN ||
+ c->ostate == CHAN_OUTPUT_WAIT_DRAIN) {
+ if (buffer_len(&c->output) > 0) {
+ FD_SET(c->wfd, writeset);
+ } else if (c->ostate == CHAN_OUTPUT_WAIT_DRAIN) {
+ chan_obuf_empty(c);
+ }
+ }
+ /** XXX check close conditions, too */
+ if (c->efd != -1) {
+ if (c->extended_usage == CHAN_EXTENDED_WRITE &&
+ buffer_len(&c->extended) > 0)
+ FD_SET(c->efd, writeset);
+ else if (c->extended_usage == CHAN_EXTENDED_READ &&
+ buffer_len(&c->extended) < c->remote_window)
+ FD_SET(c->efd, readset);
+ }
+}
+
void
channel_pre_input_draining(Channel *c, fd_set * readset, fd_set * writeset)
{
SSH_CHANNEL_OPENING, newsock, newsock, -1,
c->local_window_max, c->local_maxpacket,
0, xstrdup(buf));
-
- packet_start(SSH_MSG_PORT_OPEN);
- packet_put_int(newch);
- packet_put_string(c->path, strlen(c->path));
- packet_put_int(c->host_port);
- if (have_hostname_in_open) {
- packet_put_string(buf, strlen(buf));
+ if (compat20) {
+ packet_start(SSH2_MSG_CHANNEL_OPEN);
+ packet_put_cstring("direct-tcpip");
+ packet_put_int(newch);
+ packet_put_int(c->local_window_max);
+ packet_put_int(c->local_maxpacket);
+ packet_put_string(c->path, strlen(c->path));
+ packet_put_int(c->host_port);
+ packet_put_cstring(remote_hostname);
+ packet_put_int(remote_port);
+ packet_send();
+ } else {
+ packet_start(SSH_MSG_PORT_OPEN);
+ packet_put_int(newch);
+ packet_put_string(c->path, strlen(c->path));
+ packet_put_int(c->host_port);
+ if (have_hostname_in_open) {
+ packet_put_string(buf, strlen(buf));
+ }
+ packet_send();
}
- packet_send();
xfree(remote_hostname);
}
}
return -1;
}
buffer_consume(&c->output, len);
+ if (compat20 && len > 0) {
+ c->local_consumed += len;
+ }
+ }
+ return 1;
+}
+int
+channel_handle_efd(Channel *c, fd_set * readset, fd_set * writeset)
+{
+ char buf[16*1024];
+ int len;
+
+ if (c->efd != -1) {
+ if (c->extended_usage == CHAN_EXTENDED_WRITE &&
+ FD_ISSET(c->efd, writeset) &&
+ buffer_len(&c->extended) > 0) {
+ len = write(c->efd, buffer_ptr(&c->extended),
+ buffer_len(&c->extended));
+ debug("channel %d: written %d to efd %d",
+ c->self, len, c->efd);
+ if (len > 0) {
+ buffer_consume(&c->extended, len);
+ c->local_consumed += len;
+ }
+ } else if (c->extended_usage == CHAN_EXTENDED_READ &&
+ FD_ISSET(c->efd, readset)) {
+ len = read(c->efd, buf, sizeof(buf));
+ debug("channel %d: read %d from efd %d",
+ c->self, len, c->efd);
+ if (len > 0)
+ buffer_append(&c->extended, buf, len);
+ }
+ }
+ return 1;
+}
+int
+channel_check_window(Channel *c, fd_set * readset, fd_set * writeset)
+{
+ if (!(c->flags & CHAN_CLOSE_SENT) &&
+ c->local_window < c->local_window_max/2 &&
+ c->local_consumed > 0) {
+ packet_start(SSH2_MSG_CHANNEL_WINDOW_ADJUST);
+ packet_put_int(c->remote_id);
+ packet_put_int(c->local_consumed);
+ packet_send();
+ debug("channel %d: window %d sent adjust %d",
+ c->self, c->local_window,
+ c->local_consumed);
+ c->local_window += c->local_consumed;
+ c->local_consumed = 0;
}
return 1;
}
channel_handle_wfd(c, readset, writeset);
}
+void
+channel_post_open_2(Channel *c, fd_set * readset, fd_set * writeset)
+{
+ channel_handle_rfd(c, readset, writeset);
+ channel_handle_wfd(c, readset, writeset);
+ channel_handle_efd(c, readset, writeset);
+ channel_check_window(c, readset, writeset);
+}
+
void
channel_post_output_drain_13(Channel *c, fd_set * readset, fd_set * writeset)
{
}
}
+void
+channel_handler_init_20(void)
+{
+ channel_pre[SSH_CHANNEL_OPEN] = &channel_pre_open_20;
+ channel_pre[SSH_CHANNEL_PORT_LISTENER] = &channel_pre_listener;
+
+ channel_post[SSH_CHANNEL_OPEN] = &channel_post_open_2;
+ channel_post[SSH_CHANNEL_PORT_LISTENER] = &channel_post_port_listener;
+}
+
void
channel_handler_init_13(void)
{
channel_pre[i] = NULL;
channel_post[i] = NULL;
}
- if (compat13)
+ if (compat20)
+ channel_handler_init_20();
+ else if (compat13)
channel_handler_init_13();
else
channel_handler_init_15();
if (ftab[c->type] == NULL)
continue;
(*ftab[c->type])(c, readset, writeset);
- if (!compat13)
- chan_delete_if_full_closed(c);
+ chan_delete_if_full_closed(c);
}
}
c->istate != CHAN_INPUT_WAIT_DRAIN)
continue;
}
+ if (compat20 && (c->flags & CHAN_CLOSE_SENT)) {
+ debug("channel: %d: no data after CLOSE", c->self);
+ continue;
+ }
/* Get the amount of buffered data for this channel. */
len = buffer_len(&c->input);
if (len > 0) {
/* Send some data for the other side over the secure connection. */
- if (packet_is_interactive()) {
- if (len > 1024)
- len = 512;
+ if (compat20) {
+ if (len > c->remote_window)
+ len = c->remote_window;
+ if (len > c->remote_maxpacket)
+ len = c->remote_maxpacket;
} else {
- /* Keep the packets at reasonable size. */
- if (len > packet_get_maxsize())
- len = packet_get_maxsize()/2;
+ if (packet_is_interactive()) {
+ if (len > 1024)
+ len = 512;
+ } else {
+ /* Keep the packets at reasonable size. */
+ if (len > packet_get_maxsize()/2)
+ len = packet_get_maxsize()/2;
+ }
}
if (len > 0) {
- packet_start(SSH_MSG_CHANNEL_DATA);
+ packet_start(compat20 ?
+ SSH2_MSG_CHANNEL_DATA : SSH_MSG_CHANNEL_DATA);
packet_put_int(c->remote_id);
packet_put_string(buffer_ptr(&c->input), len);
packet_send();
buffer_consume(&c->input, len);
c->remote_window -= len;
-debug("channel %d: send data len %d", c->self, len);
+ debug("channel %d: send data len %d", c->self, len);
}
} else if (c->istate == CHAN_INPUT_WAIT_DRAIN) {
if (compat13)
*/
chan_ibuf_empty(c);
}
+ /* Send extended data, i.e. stderr */
+ if (compat20 &&
+ c->remote_window > 0 &&
+ (len = buffer_len(&c->extended)) > 0 &&
+ c->extended_usage == CHAN_EXTENDED_READ) {
+ if (len > c->remote_window)
+ len = c->remote_window;
+ if (len > c->remote_maxpacket)
+ len = c->remote_maxpacket;
+ packet_start(SSH2_MSG_CHANNEL_EXTENDED_DATA);
+ packet_put_int(c->remote_id);
+ packet_put_int(SSH2_EXTENDED_DATA_STDERR);
+ packet_put_string(buffer_ptr(&c->extended), len);
+ packet_send();
+ buffer_consume(&c->extended, len);
+ c->remote_window -= len;
+ }
}
}
/* Get the data. */
data = packet_get_string(&data_len);
- packet_integrity_check(plen, 4 + 4 + data_len, SSH_MSG_CHANNEL_DATA);
+ if (compat20){
+ if (data_len > c->local_maxpacket) {
+ log("channel %d: rcvd big packet %d, maxpack %d",
+ c->self, data_len, c->local_maxpacket);
+ }
+ if (data_len > c->local_window) {
+ log("channel %d: rcvd too much data %d, win %d",
+ c->self, data_len, c->local_window);
+ xfree(data);
+ return;
+ }
+ c->local_window -= data_len;
+ }else{
+ packet_integrity_check(plen, 4 + 4 + data_len, type);
+ }
buffer_append(&c->output, data, data_len);
xfree(data);
}
+void
+channel_input_extended_data(int type, int plen)
+{
+ int id;
+ int tcode;
+ char *data;
+ unsigned int data_len;
+ Channel *c;
+
+ /* Get the channel number and verify it. */
+ id = packet_get_int();
+ c = channel_lookup(id);
+
+ if (c == NULL)
+ packet_disconnect("Received extended_data for bad channel %d.", id);
+ if (c->type != SSH_CHANNEL_OPEN) {
+ log("channel %d: ext data for non open", id);
+ return;
+ }
+ tcode = packet_get_int();
+ if (c->efd == -1 ||
+ c->extended_usage != CHAN_EXTENDED_WRITE ||
+ tcode != SSH2_EXTENDED_DATA_STDERR) {
+ log("channel %d: bad ext data", c->self);
+ return;
+ }
+ data = packet_get_string(&data_len);
+ if (data_len > c->local_window) {
+ log("channel %d: rcvd too much extended_data %d, win %d",
+ c->self, data_len, c->local_window);
+ xfree(data);
+ return;
+ }
+ debug("channel %d: rcvd ext data %d", c->self, data_len);
+ c->local_window -= data_len;
+ buffer_append(&c->extended, data, data_len);
+ xfree(data);
+}
+
/*
* Returns true if no channel has too much buffered data, and false if one or
for (i = 0; i < channels_alloc; i++) {
c = &channels[i];
if (c->type == SSH_CHANNEL_OPEN) {
- if (buffer_len(&c->input) > packet_get_maxsize()) {
+ if (!compat20 && buffer_len(&c->input) > packet_get_maxsize()) {
debug("channel %d: big input buffer %d",
c->self, buffer_len(&c->input));
return 0;
int id, remote_id;
Channel *c;
- packet_integrity_check(plen, 4 + 4, type);
+ if (!compat20)
+ packet_integrity_check(plen, 4 + 4, type);
id = packet_get_int();
c = channel_lookup(id);
/* Record the remote channel number and mark that the channel is now open. */
c->remote_id = remote_id;
c->type = SSH_CHANNEL_OPEN;
+
+ if (compat20) {
+ c->remote_window = packet_get_int();
+ c->remote_maxpacket = packet_get_int();
+ if (c->cb_fn != NULL && c->cb_event == type) {
+ debug("callback start");
+ c->cb_fn(c->self, c->cb_arg);
+ debug("callback done");
+ }
+ debug("channel %d: open confirm rwindow %d rmax %d", c->self,
+ c->remote_window, c->remote_maxpacket);
+ }
}
void
int id;
Channel *c;
- packet_integrity_check(plen, 4, type);
+ if (!compat20)
+ packet_integrity_check(plen, 4, type);
id = packet_get_int();
c = channel_lookup(id);
if (c==NULL || c->type != SSH_CHANNEL_OPENING)
packet_disconnect("Received open failure for "
"non-opening channel %d.", id);
-
+ if (compat20) {
+ int reason = packet_get_int();
+ char *msg = packet_get_string(NULL);
+ log("channel_open_failure: %d: reason %d: %s", id, reason, msg);
+ xfree(msg);
+ }
/* Free the channel. This will also close the socket. */
channel_free(id);
}
+void
+channel_input_channel_request(int type, int plen)
+{
+ int id;
+ Channel *c;
+
+ id = packet_get_int();
+ c = channel_lookup(id);
+
+ if (c == NULL ||
+ (c->type != SSH_CHANNEL_OPEN && c->type != SSH_CHANNEL_LARVAL))
+ packet_disconnect("Received request for "
+ "non-open channel %d.", id);
+ if (c->cb_fn != NULL && c->cb_event == type) {
+ debug("callback start");
+ c->cb_fn(c->self, c->cb_arg);
+ debug("callback done");
+ } else {
+ char *service = packet_get_string(NULL);
+ debug("channel: %d rcvd request for %s", c->self, service);
+debug("cb_fn %p cb_event %d", c->cb_fn , c->cb_event);
+ xfree(service);
+ }
+}
+
+void
+channel_input_window_adjust(int type, int plen)
+{
+ Channel *c;
+ int id, adjust;
+
+ if (!compat20)
+ return;
+
+ /* Get the channel number and verify it. */
+ id = packet_get_int();
+ c = channel_lookup(id);
+
+ if (c == NULL || c->type != SSH_CHANNEL_OPEN) {
+ log("Received window adjust for "
+ "non-open channel %d.", id);
+ return;
+ }
+ adjust = packet_get_int();
+ debug("channel %d: rcvd adjust %d", id, adjust);
+ c->remote_window += adjust;
+}
+
/*
* Stops listening for channels, and removes any unix domain sockets that we
* might have.
case SSH_CHANNEL_CLOSED:
case SSH_CHANNEL_AUTH_SOCKET:
continue;
+ case SSH_CHANNEL_LARVAL:
+ if (!compat20)
+ fatal("cannot happen: SSH_CHANNEL_LARVAL");
+ continue;
case SSH_CHANNEL_OPENING:
case SSH_CHANNEL_OPEN:
case SSH_CHANNEL_X11_OPEN:
case SSH_CHANNEL_CLOSED:
case SSH_CHANNEL_AUTH_SOCKET:
continue;
+ case SSH_CHANNEL_LARVAL:
case SSH_CHANNEL_OPENING:
case SSH_CHANNEL_OPEN:
case SSH_CHANNEL_X11_OPEN:
num_permitted_opens++;
/* Send the forward request to the remote side. */
- packet_start(SSH_CMSG_PORT_FORWARD_REQUEST);
- packet_put_int(port_to_connect);
- packet_put_string(host_to_connect, strlen(host_to_connect));
- packet_put_int(listen_port);
- packet_send();
- packet_write_wait();
- /*
- * Wait for response from the remote side. It will send a disconnect
- * message on failure, and we will never see it here.
- */
- packet_read_expect(&payload_len, SSH_SMSG_SUCCESS);
+ if (compat20) {
+ const char *address_to_bind = "0.0.0.0";
+ packet_start(SSH2_MSG_GLOBAL_REQUEST);
+ packet_put_cstring("tcpip-forward");
+ packet_put_char(0); /* boolean: want reply */
+ packet_put_cstring(address_to_bind);
+ packet_put_int(listen_port);
+ } else {
+ packet_start(SSH_CMSG_PORT_FORWARD_REQUEST);
+ packet_put_int(port_to_connect);
+ packet_put_cstring(host_to_connect);
+ packet_put_int(listen_port);
+ packet_send();
+ packet_write_wait();
+ /*
+ * Wait for response from the remote side. It will send a disconnect
+ * message on failure, and we will never see it here.
+ */
+ packet_read_expect(&payload_len, SSH_SMSG_SUCCESS);
+ }
}
/*
packet_put_int(newch);
packet_send();
}
+
+void
+channel_open(int id)
+{
+ Channel *c = channel_lookup(id);
+ if (c == NULL) {
+ log("channel_open: %d: bad id", id);
+ return;
+ }
+ packet_start(SSH2_MSG_CHANNEL_OPEN);
+ packet_put_cstring(c->ctype);
+ packet_put_int(c->self);
+ packet_put_int(c->local_window);
+ packet_put_int(c->local_maxpacket);
+ packet_send();
+ debug("channel open %d", id);
+}
+void
+channel_request(int id, char *service, int wantconfirm)
+{
+ channel_request_start(id, service, wantconfirm);
+ packet_send();
+ debug("channel request %d: %s", id, service) ;
+}
+void
+channel_request_start(int id, char *service, int wantconfirm)
+{
+ Channel *c = channel_lookup(id);
+ if (c == NULL) {
+ log("channel_request: %d: bad id", id);
+ return;
+ }
+ packet_start(SSH2_MSG_CHANNEL_REQUEST);
+ packet_put_int(c->remote_id);
+ packet_put_cstring(service);
+ packet_put_char(wantconfirm);
+}
+void
+channel_register_callback(int id, int mtype, channel_callback_fn *fn, void *arg)
+{
+ Channel *c = channel_lookup(id);
+ if (c == NULL) {
+ log("channel_register_callback: %d: bad id", id);
+ return;
+ }
+ c->cb_event = mtype;
+ c->cb_fn = fn;
+ c->cb_arg = arg;
+}
+void
+channel_register_cleanup(int id, channel_callback_fn *fn)
+{
+ Channel *c = channel_lookup(id);
+ if (c == NULL) {
+ log("channel_register_cleanup: %d: bad id", id);
+ return;
+ }
+ c->dettach_user = fn;
+}
+void
+channel_cancel_cleanup(int id)
+{
+ Channel *c = channel_lookup(id);
+ if (c == NULL) {
+ log("channel_cancel_cleanup: %d: bad id", id);
+ return;
+ }
+ c->dettach_user = NULL;
+}
+
+void
+channel_set_fds(int id, int rfd, int wfd, int efd, int extusage)
+{
+ Channel *c = channel_lookup(id);
+ if (c == NULL || c->type != SSH_CHANNEL_LARVAL)
+ fatal("channel_activate for non-larval channel %d.", id);
+ if (rfd > channel_max_fd_value)
+ channel_max_fd_value = rfd;
+ if (wfd > channel_max_fd_value)
+ channel_max_fd_value = wfd;
+ if (efd > channel_max_fd_value)
+ channel_max_fd_value = efd;
+ c->type = SSH_CHANNEL_OPEN;
+ c->rfd = rfd;
+ c->wfd = wfd;
+ c->efd = efd;
+ c->extended_usage = extusage;
+ /* XXX window size? */
+ c->local_window = c->local_window_max = c->local_maxpacket/2;
+ packet_start(SSH2_MSG_CHANNEL_WINDOW_ADJUST);
+ packet_put_int(c->remote_id);
+ packet_put_int(c->local_window);
+ packet_send();
+}
-/* RCSID("$Id: channels.h,v 1.7 2000/03/28 20:31:26 markus Exp $"); */
+/* RCSID("$Id: channels.h,v 1.8 2000/04/03 07:07:15 markus Exp $"); */
#ifndef CHANNELS_H
#define CHANNELS_H
/* peer can be reached over encrypted connection, via packet-sent */
int istate; /* input from channel (state of receive half) */
int ostate; /* output to channel (state of transmit half) */
+ int flags; /* close sent/rcvd */
int rfd; /* read fd */
int wfd; /* write fd */
int efd; /* extended fd */
#define CHAN_EXTENDED_READ 1
#define CHAN_EXTENDED_WRITE 2
+void channel_set_fds(int id, int rfd, int wfd, int efd, int extusage);
void channel_open(int id);
+void channel_request(int id, char *service, int wantconfirm);
+void channel_request_start(int id, char *service, int wantconfirm);
+void channel_register_callback(int id, int mtype, channel_callback_fn *fn, void *arg);
+void channel_register_cleanup(int id, channel_callback_fn *fn);
+void channel_cancel_cleanup(int id);
Channel *channel_lookup(int id);
int
channel_new(char *ctype, int type, int rfd, int wfd, int efd,
int window, int maxpack, int extended_usage, char *remote_name);
+void channel_input_channel_request(int type, int plen);
void channel_input_close(int type, int plen);
void channel_input_close_confirmation(int type, int plen);
void channel_input_data(int type, int plen);
+void channel_input_extended_data(int type, int plen);
void channel_input_ieof(int type, int plen);
void channel_input_oclose(int type, int plen);
void channel_input_open_confirmation(int type, int plen);
void channel_input_open_failure(int type, int plen);
void channel_input_port_open(int type, int plen);
+void channel_input_window_adjust(int type, int plen);
void channel_input_open(int type, int plen);
/* Sets specific protocol options. */
/* This is called to process an SSH_SMSG_AGENT_OPEN message. */
void auth_input_open_request(int type, int plen);
+/* XXX */
+int channel_connect_to(const char *host, u_short host_port);
+
#endif
*/
#include "includes.h"
-RCSID("$Id: compat.c,v 1.5 1999/11/24 16:15:24 markus Exp $");
+RCSID("$Id: compat.c,v 1.6 2000/04/03 07:07:15 markus Exp $");
#include "ssh.h"
+#include "packet.h"
int compat13 = 0;
+int compat20 = 0;
+int datafellows = 0;
+void
+enable_compat20(void)
+{
+ fatal("protocol 2.0 not implemented");
+}
void
enable_compat13(void)
{
verbose("Enabling compatibility mode for protocol 1.3");
compat13 = 1;
}
+/* datafellows bug compatibility */
+void
+compat_datafellows(const char *version)
+{
+ int i;
+ size_t len;
+ static const char *check[] = {
+ "2.0.1",
+ "2.1.0.beta.9",
+ "2.1.0.pre.3",
+ "2.1.0.public.beta.1",
+ NULL
+ };
+ for (i = 0; check[i]; i++) {
+ len = strlen(check[i]);
+ if (strlen(version) >= len &&
+ (strncmp(version, check[i], len) == 0)) {
+ log("datafellows: %.200s", version);
+ datafellows = 1;
+ return;
+ }
+ }
+}
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-/* RCSID("$Id: compat.h,v 1.4 1999/11/24 16:15:24 markus Exp $"); */
+/* RCSID("$Id: compat.h,v 1.5 2000/04/03 07:07:15 markus Exp $"); */
#ifndef COMPAT_H
#define COMPAT_H
void enable_compat13(void);
+void enable_compat20(void);
+void compat_datafellows(const char *s);
extern int compat13;
+extern int compat20;
+extern int datafellows;
#endif
*/
#include "includes.h"
-RCSID("$Id: nchan.c,v 1.12 2000/03/28 20:34:14 markus Exp $");
+RCSID("$Id: nchan.c,v 1.13 2000/04/03 07:07:15 markus Exp $");
#include "ssh.h"
#include "channels.h"
#include "nchan.h"
-static void chan_send_ieof(Channel *c);
-static void chan_send_oclose(Channel *c);
-static void chan_shutdown_write(Channel *c);
-static void chan_shutdown_read(Channel *c);
+#include "ssh2.h"
+#include "compat.h"
+/* functions manipulating channel states */
/*
* EVENTS update channel input/output states execute ACTIONS
*/
-
/* events concerning the INPUT from socket for channel (istate) */
-void
-chan_rcvd_oclose(Channel *c)
+chan_event_fn *chan_rcvd_oclose = NULL;
+chan_event_fn *chan_read_failed = NULL;
+chan_event_fn *chan_ibuf_empty = NULL;
+/* events concerning the OUTPUT from channel for socket (ostate) */
+chan_event_fn *chan_rcvd_ieof = NULL;
+chan_event_fn *chan_write_failed = NULL;
+chan_event_fn *chan_obuf_empty = NULL;
+/*
+ * ACTIONS: should never update the channel states
+ */
+static void chan_send_ieof1(Channel *c);
+static void chan_send_oclose1(Channel *c);
+static void chan_send_close2(Channel *c);
+static void chan_send_eof2(Channel *c);
+
+/* channel cleanup */
+chan_event_fn *chan_delete_if_full_closed = NULL;
+
+/* helper */
+static void chan_shutdown_write(Channel *c);
+static void chan_shutdown_read(Channel *c);
+
+/*
+ * SSH1 specific implementation of event functions
+ */
+
+static void
+chan_rcvd_oclose1(Channel *c)
{
+ debug("channel %d: rcvd oclose", c->self);
switch (c->istate) {
case CHAN_INPUT_WAIT_OCLOSE:
- debug("channel %d: INPUT_WAIT_OCLOSE -> INPUT_CLOSED [rcvd OCLOSE]", c->self);
+ debug("channel %d: input wait_oclose -> closed", c->self);
c->istate = CHAN_INPUT_CLOSED;
break;
case CHAN_INPUT_OPEN:
- debug("channel %d: INPUT_OPEN -> INPUT_CLOSED [rvcd OCLOSE, send IEOF]", c->self);
+ debug("channel %d: input open -> closed", c->self);
chan_shutdown_read(c);
- chan_send_ieof(c);
+ chan_send_ieof1(c);
c->istate = CHAN_INPUT_CLOSED;
break;
case CHAN_INPUT_WAIT_DRAIN:
/* both local read_failed and remote write_failed */
- log("channel %d: INPUT_WAIT_DRAIN -> INPUT_CLOSED [rvcd OCLOSE, send IEOF]", c->self);
- debug("channel %d: INPUT_WAIT_DRAIN -> INPUT_CLOSED [rvcd OCLOSE, send IEOF]", c->self);
- chan_send_ieof(c);
+ log("channel %d: input drain -> closed", c->self);
+ chan_send_ieof1(c);
c->istate = CHAN_INPUT_CLOSED;
break;
default:
- error("protocol error: chan_rcvd_oclose %d for istate %d", c->self, c->istate);
+ error("channel %d: protocol error: chan_rcvd_oclose for istate %d",
+ c->self, c->istate);
return;
}
}
-void
-chan_read_failed(Channel *c)
+static void
+chan_read_failed_12(Channel *c)
{
+ debug("channel %d: read failed", c->self);
switch (c->istate) {
case CHAN_INPUT_OPEN:
- debug("channel %d: INPUT_OPEN -> INPUT_WAIT_DRAIN [read failed]", c->self);
+ debug("channel %d: input open -> drain", c->self);
chan_shutdown_read(c);
c->istate = CHAN_INPUT_WAIT_DRAIN;
break;
default:
- error("internal error: we do not read, but chan_read_failed %d for istate %d",
- c->self, c->istate);
+ error("channel %d: internal error: we do not read, but chan_read_failed for istate %d",
+ c->self, c->istate);
break;
}
}
-void
-chan_ibuf_empty(Channel *c)
+static void
+chan_ibuf_empty1(Channel *c)
{
+ debug("channel %d: ibuf empty", c->self);
if (buffer_len(&c->input)) {
- error("internal error: chan_ibuf_empty %d for non empty buffer", c->self);
+ error("channel %d: internal error: chan_ibuf_empty for non empty buffer",
+ c->self);
return;
}
switch (c->istate) {
case CHAN_INPUT_WAIT_DRAIN:
- debug("channel %d: INPUT_WAIT_DRAIN -> INPUT_WAIT_OCLOSE [inbuf empty, send IEOF]", c->self);
- chan_send_ieof(c);
+ debug("channel %d: input drain -> wait_oclose", c->self);
+ chan_send_ieof1(c);
c->istate = CHAN_INPUT_WAIT_OCLOSE;
break;
default:
- error("internal error: chan_ibuf_empty %d for istate %d", c->self, c->istate);
+ error("channel %d: internal error: chan_ibuf_empty for istate %d",
+ c->self, c->istate);
break;
}
}
-
-/* events concerning the OUTPUT from channel for socket (ostate) */
-void
-chan_rcvd_ieof(Channel *c)
+static void
+chan_rcvd_ieof1(Channel *c)
{
+ debug("channel %d: rcvd ieof", c->self);
switch (c->ostate) {
case CHAN_OUTPUT_OPEN:
- debug("channel %d: OUTPUT_OPEN -> OUTPUT_WAIT_DRAIN [rvcd IEOF]", c->self);
+ debug("channel %d: output open -> drain", c->self);
c->ostate = CHAN_OUTPUT_WAIT_DRAIN;
break;
case CHAN_OUTPUT_WAIT_IEOF:
- debug("channel %d: OUTPUT_WAIT_IEOF -> OUTPUT_CLOSED [rvcd IEOF]", c->self);
+ debug("channel %d: output wait_ieof -> closed", c->self);
c->ostate = CHAN_OUTPUT_CLOSED;
break;
default:
- error("protocol error: chan_rcvd_ieof %d for ostate %d", c->self, c->ostate);
+ error("channel %d: protocol error: chan_rcvd_ieof for ostate %d",
+ c->self, c->ostate);
break;
}
}
-void
-chan_write_failed(Channel *c)
+static void
+chan_write_failed1(Channel *c)
{
+ debug("channel %d: write failed", c->self);
switch (c->ostate) {
case CHAN_OUTPUT_OPEN:
- debug("channel %d: OUTPUT_OPEN -> OUTPUT_WAIT_IEOF [write failed]", c->self);
- chan_send_oclose(c);
+ debug("channel %d: output open -> wait_ieof", c->self);
+ chan_send_oclose1(c);
c->ostate = CHAN_OUTPUT_WAIT_IEOF;
break;
case CHAN_OUTPUT_WAIT_DRAIN:
- debug("channel %d: OUTPUT_WAIT_DRAIN -> OUTPUT_CLOSED [write failed]", c->self);
- chan_send_oclose(c);
+ debug("channel %d: output wait_drain -> closed", c->self);
+ chan_send_oclose1(c);
c->ostate = CHAN_OUTPUT_CLOSED;
break;
default:
- error("internal error: chan_write_failed %d for ostate %d", c->self, c->ostate);
+ error("channel %d: internal error: chan_write_failed for ostate %d",
+ c->self, c->ostate);
break;
}
}
-void
-chan_obuf_empty(Channel *c)
+static void
+chan_obuf_empty1(Channel *c)
{
+ debug("channel %d: obuf empty", c->self);
if (buffer_len(&c->output)) {
- debug("internal error: chan_obuf_empty %d for non empty buffer", c->self);
+ error("channel %d: internal error: chan_obuf_empty for non empty buffer",
+ c->self);
return;
}
switch (c->ostate) {
case CHAN_OUTPUT_WAIT_DRAIN:
- debug("channel %d: OUTPUT_WAIT_DRAIN -> OUTPUT_CLOSED [obuf empty, send OCLOSE]", c->self);
- chan_send_oclose(c);
+ debug("channel %d: output drain -> closed", c->self);
+ chan_send_oclose1(c);
c->ostate = CHAN_OUTPUT_CLOSED;
break;
default:
- error("internal error: chan_obuf_empty %d for ostate %d", c->self, c->ostate);
+ error("channel %d: internal error: chan_obuf_empty for ostate %d",
+ c->self, c->ostate);
break;
}
}
-
-/*
- * ACTIONS: should never update the channel states: c->istate or c->ostate
- */
static void
-chan_send_ieof(Channel *c)
+chan_send_ieof1(Channel *c)
{
+ debug("channel %d: send ieof", c->self);
switch (c->istate) {
case CHAN_INPUT_OPEN:
case CHAN_INPUT_WAIT_DRAIN:
packet_send();
break;
default:
- error("internal error: channel %d: cannot send IEOF for istate %d", c->self, c->istate);
+ error("channel %d: internal error: cannot send ieof for istate %d",
+ c->self, c->istate);
break;
}
}
static void
-chan_send_oclose(Channel *c)
+chan_send_oclose1(Channel *c)
{
+ debug("channel %d: send oclose", c->self);
switch (c->ostate) {
case CHAN_OUTPUT_OPEN:
case CHAN_OUTPUT_WAIT_DRAIN:
packet_send();
break;
default:
- error("internal error: channel %d: cannot send OCLOSE for ostate %d", c->self, c->istate);
+ error("channel %d: internal error: cannot send oclose for ostate %d",
+ c->self, c->ostate);
break;
}
}
+static void
+chan_delete_if_full_closed1(Channel *c)
+{
+ if (c->istate == CHAN_INPUT_CLOSED && c->ostate == CHAN_OUTPUT_CLOSED) {
+ debug("channel %d: full closed", c->self);
+ channel_free(c->self);
+ }
+}
-/* helper */
+/*
+ * the same for SSH2
+ */
static void
-chan_shutdown_write(Channel *c)
+chan_rcvd_oclose2(Channel *c)
{
- /* shutdown failure is allowed if write failed already */
- debug("channel %d: shutdown_write", c->self);
- if (shutdown(c->sock, SHUT_WR) < 0)
- debug("chan_shutdown_write failed for #%d/fd%d: %.100s",
- c->self, c->sock, strerror(errno));
+ debug("channel %d: rcvd close", c->self);
+ if (c->flags & CHAN_CLOSE_RCVD)
+ error("channel %d: protocol error: close rcvd twice", c->self);
+ c->flags |= CHAN_CLOSE_RCVD;
+ if (c->type == SSH_CHANNEL_LARVAL) {
+ /* tear down larval channels immediately */
+ c->ostate = CHAN_OUTPUT_CLOSED;
+ c->istate = CHAN_INPUT_CLOSED;
+ return;
+ }
+ switch (c->ostate) {
+ case CHAN_OUTPUT_OPEN:
+ /* wait until a data from the channel is consumed if a CLOSE is received */
+ debug("channel %d: output open -> drain", c->self);
+ c->ostate = CHAN_OUTPUT_WAIT_DRAIN;
+ break;
+ }
+ switch (c->istate) {
+ case CHAN_INPUT_OPEN:
+ debug("channel %d: input open -> closed", c->self);
+ chan_shutdown_read(c);
+ break;
+ case CHAN_INPUT_WAIT_DRAIN:
+ debug("channel %d: input drain -> closed", c->self);
+ chan_send_eof2(c);
+ break;
+ }
+ c->istate = CHAN_INPUT_CLOSED;
}
static void
-chan_shutdown_read(Channel *c)
+chan_ibuf_empty2(Channel *c)
+{
+ debug("channel %d: ibuf empty", c->self);
+ if (buffer_len(&c->input)) {
+ error("channel %d: internal error: chan_ibuf_empty for non empty buffer",
+ c->self);
+ return;
+ }
+ switch (c->istate) {
+ case CHAN_INPUT_WAIT_DRAIN:
+ debug("channel %d: input drain -> closed", c->self);
+ if (!(c->flags & CHAN_CLOSE_SENT))
+ chan_send_eof2(c);
+ c->istate = CHAN_INPUT_CLOSED;
+ break;
+ default:
+ error("channel %d: internal error: chan_ibuf_empty for istate %d",
+ c->self, c->istate);
+ break;
+ }
+}
+static void
+chan_rcvd_ieof2(Channel *c)
{
- debug("channel %d: shutdown_read", c->self);
- if (shutdown(c->sock, SHUT_RD) < 0)
- error("chan_shutdown_read failed for #%d/fd%d [i%d o%d]: %.100s",
- c->self, c->sock, c->istate, c->ostate, strerror(errno));
+ debug("channel %d: rcvd eof", c->self);
+ if (c->ostate == CHAN_OUTPUT_OPEN) {
+ debug("channel %d: output open -> drain", c->self);
+ c->ostate = CHAN_OUTPUT_WAIT_DRAIN;
+ }
}
-void
-chan_delete_if_full_closed(Channel *c)
+static void
+chan_write_failed2(Channel *c)
+{
+ debug("channel %d: write failed", c->self);
+ switch (c->ostate) {
+ case CHAN_OUTPUT_OPEN:
+ debug("channel %d: output open -> closed", c->self);
+ chan_shutdown_write(c); // ??
+ c->ostate = CHAN_OUTPUT_CLOSED;
+ break;
+ case CHAN_OUTPUT_WAIT_DRAIN:
+ debug("channel %d: output drain -> closed", c->self);
+ chan_shutdown_write(c);
+ c->ostate = CHAN_OUTPUT_CLOSED;
+ break;
+ default:
+ error("channel %d: internal error: chan_write_failed for ostate %d",
+ c->self, c->ostate);
+ break;
+ }
+}
+static void
+chan_obuf_empty2(Channel *c)
+{
+ debug("channel %d: obuf empty", c->self);
+ if (buffer_len(&c->output)) {
+ error("internal error: chan_obuf_empty %d for non empty buffer",
+ c->self);
+ return;
+ }
+ switch (c->ostate) {
+ case CHAN_OUTPUT_WAIT_DRAIN:
+ debug("channel %d: output drain -> closed", c->self);
+ chan_shutdown_write(c);
+ c->ostate = CHAN_OUTPUT_CLOSED;
+ break;
+ default:
+ error("channel %d: internal error: chan_obuf_empty for ostate %d",
+ c->self, c->ostate);
+ break;
+ }
+}
+static void
+chan_send_eof2(Channel *c)
+{
+ debug("channel %d: send eof", c->self);
+ switch (c->istate) {
+ case CHAN_INPUT_WAIT_DRAIN:
+ packet_start(SSH2_MSG_CHANNEL_EOF);
+ packet_put_int(c->remote_id);
+ packet_send();
+ break;
+ default:
+ error("channel %d: internal error: cannot send eof for istate %d",
+ c->self, c->istate);
+ break;
+ }
+}
+static void
+chan_send_close2(Channel *c)
+{
+ debug("channel %d: send close", c->self);
+ if (c->ostate != CHAN_OUTPUT_CLOSED ||
+ c->istate != CHAN_INPUT_CLOSED) {
+ error("channel %d: internal error: cannot send close for istate/ostate %d/%d",
+ c->self, c->istate, c->ostate);
+ } else if (c->flags & CHAN_CLOSE_SENT) {
+ error("channel %d: internal error: already sent close", c->self);
+ } else {
+ packet_start(SSH2_MSG_CHANNEL_CLOSE);
+ packet_put_int(c->remote_id);
+ packet_send();
+ c->flags |= CHAN_CLOSE_SENT;
+ }
+}
+static void
+chan_delete_if_full_closed2(Channel *c)
{
if (c->istate == CHAN_INPUT_CLOSED && c->ostate == CHAN_OUTPUT_CLOSED) {
- debug("channel %d: full closed", c->self);
- channel_free(c->self);
+ if (!(c->flags & CHAN_CLOSE_SENT)) {
+ chan_send_close2(c);
+ }
+ if ((c->flags & CHAN_CLOSE_SENT) &&
+ (c->flags & CHAN_CLOSE_RCVD)) {
+ debug("channel %d: full closed2", c->self);
+ channel_free(c->self);
+ }
}
}
+
+/* shared */
void
chan_init_iostates(Channel *c)
{
c->ostate = CHAN_OUTPUT_OPEN;
c->istate = CHAN_INPUT_OPEN;
+ c->flags = 0;
+}
+
+/* init */
+void
+chan_init(void)
+{
+ if (compat20) {
+ chan_rcvd_oclose = chan_rcvd_oclose2;
+ chan_read_failed = chan_read_failed_12;
+ chan_ibuf_empty = chan_ibuf_empty2;
+
+ chan_rcvd_ieof = chan_rcvd_ieof2;
+ chan_write_failed = chan_write_failed2;
+ chan_obuf_empty = chan_obuf_empty2;
+
+ chan_delete_if_full_closed = chan_delete_if_full_closed2;
+ } else {
+ chan_rcvd_oclose = chan_rcvd_oclose1;
+ chan_read_failed = chan_read_failed_12;
+ chan_ibuf_empty = chan_ibuf_empty1;
+
+ chan_rcvd_ieof = chan_rcvd_ieof1;
+ chan_write_failed = chan_write_failed1;
+ chan_obuf_empty = chan_obuf_empty1;
+
+ chan_delete_if_full_closed = chan_delete_if_full_closed1;
+ }
+}
+
+/* helper */
+static void
+chan_shutdown_write(Channel *c)
+{
+ buffer_consume(&c->output, buffer_len(&c->output));
+ if (compat20 && c->type == SSH_CHANNEL_LARVAL)
+ return;
+ /* shutdown failure is allowed if write failed already */
+ debug("channel %d: close_write", c->self);
+ if (c->sock != -1) {
+ if (shutdown(c->sock, SHUT_WR) < 0)
+ debug("channel %d: chan_shutdown_write: shutdown() failed for fd%d: %.100s",
+ c->self, c->sock, strerror(errno));
+ } else {
+ if (close(c->wfd) < 0)
+ log("channel %d: chan_shutdown_write: close() failed for fd%d: %.100s",
+ c->self, c->wfd, strerror(errno));
+ c->wfd = -1;
+ }
+}
+static void
+chan_shutdown_read(Channel *c)
+{
+ if (compat20 && c->type == SSH_CHANNEL_LARVAL)
+ return;
+ debug("channel %d: close_read", c->self);
+ if (c->sock != -1) {
+ if (shutdown(c->sock, SHUT_RD) < 0)
+ error("channel %d: chan_shutdown_read: shutdown() failed for fd%d [i%d o%d]: %.100s",
+ c->self, c->sock, c->istate, c->ostate, strerror(errno));
+ } else {
+ if (close(c->rfd) < 0)
+ log("channel %d: chan_shutdown_read: close() failed for fd%d: %.100s",
+ c->self, c->rfd, strerror(errno));
+ c->rfd = -1;
+ }
}
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-/* RCSID("$Id: nchan.h,v 1.6 2000/03/28 20:31:27 markus Exp $"); */
+/* RCSID("$Id: nchan.h,v 1.7 2000/04/03 07:07:15 markus Exp $"); */
#ifndef NCHAN_H
#define NCHAN_H
#define CHAN_OUTPUT_WAIT_IEOF 0x40
#define CHAN_OUTPUT_CLOSED 0x80
-/* EVENTS for the input state */
-void chan_rcvd_oclose(Channel * c);
-void chan_read_failed(Channel * c);
-void chan_ibuf_empty(Channel * c);
+#define CHAN_CLOSE_SENT 0x01
+#define CHAN_CLOSE_RCVD 0x02
-/* EVENTS for the output state */
-void chan_rcvd_ieof(Channel * c);
-void chan_write_failed(Channel * c);
-void chan_obuf_empty(Channel * c);
-void chan_init_iostates(Channel * c);
+/* Channel EVENTS */
+typedef void chan_event_fn(Channel * c);
+
+/* for the input state */
+extern chan_event_fn *chan_rcvd_oclose;
+extern chan_event_fn *chan_read_failed;
+extern chan_event_fn *chan_ibuf_empty;
+
+/* for the output state */
+extern chan_event_fn *chan_rcvd_ieof;
+extern chan_event_fn *chan_write_failed;
+extern chan_event_fn *chan_obuf_empty;
-void chan_delete_if_full_closed(Channel *c);
+extern chan_event_fn *chan_delete_if_full_closed;
+
+void chan_init_iostates(Channel * c);
+void chan_init(void);
#endif
--- /dev/null
+.TL
+OpenSSH Channel Close Protocol 2.0 Implementation
+.SH
+Channel Input State Diagram
+.PS
+reset
+l=1
+s=1.2
+ellipsewid=s*ellipsewid
+boxwid=s*boxwid
+ellipseht=s*ellipseht
+S1: ellipse "INPUT" "OPEN"
+move right 2*l from last ellipse.e
+S3: ellipse invis
+move down l from last ellipse.s
+S4: ellipse "INPUT" "CLOSED"
+move down l from 1st ellipse.s
+S2: ellipse "INPUT" "WAIT" "DRAIN"
+arrow from S1.e to S4.n
+box invis "rcvd CLOSE/" "shutdown_read" with .sw at last arrow.c
+arrow "ibuf_empty ||" "rcvd CLOSE/" "send EOF" "" from S2.e to S4.w
+arrow from S1.s to S2.n
+box invis "read_failed/" "shutdown_read" with .e at last arrow.c
+ellipse wid .9*ellipsewid ht .9*ellipseht at S4
+arrow "start" "" from S1.w+(-0.5,0) to S1.w
+.PE
+.SH
+Channel Output State Diagram
+.PS
+S1: ellipse "OUTPUT" "OPEN"
+move right 2*l from last ellipse.e
+S3: ellipse invis
+move down l from last ellipse.s
+S4: ellipse "OUTPUT" "CLOSED"
+move down l from 1st ellipse.s
+S2: ellipse "OUTPUT" "WAIT" "DRAIN"
+arrow from S1.e to S4.n
+box invis "write_failed/" "shutdown_write" with .sw at last arrow.c
+arrow "obuf_empty ||" "write_failed/" "shutdown_write" "" from S2.e to S4.w
+arrow from S1.s to S2.n
+box invis "rcvd EOF ||" "rcvd CLOSE/" "-" with .e at last arrow.c
+ellipse wid .9*ellipsewid ht .9*ellipseht at S4
+arrow "start" "" from S1.w+(-0.5,0) to S1.w
+.PE
+.SH
+Notes
+.PP
+The input buffer is filled with data from the socket
+(the socket represents the local consumer/producer of the
+forwarded channel).
+The data is then sent over the INPUT-end (transmit-end) of the channel to the
+remote peer.
+Data sent by the peer is received on the OUTPUT-end (receive-end),
+saved in the output buffer and written to the socket.
+.PP
+If the local protocol instance has forwarded all data on the
+INPUT-end of the channel, it sends an EOF message to the peer.
+.PP
+A CLOSE message is sent to the peer if
+both the INPUT- and the OUTOUT-half of the local
+end of the channel are closed.
+.PP
+The channel can be deallocated by a protocol instance
+if a CLOSE message he been both sent and received.
*/
#include "includes.h"
-RCSID("$Id: packet.c,v 1.23 2000/03/28 20:31:27 markus Exp $");
+RCSID("$Id: packet.c,v 1.24 2000/04/03 07:07:15 markus Exp $");
#include "xmalloc.h"
#include "buffer.h"
{
buffer_put_string(&outgoing_packet, buf, len);
}
+void
+packet_put_cstring(const char *str)
+{
+ buffer_put_string(&outgoing_packet, str, strlen(str));
+}
+
+void
+packet_put_raw(const char *buf, unsigned int len)
+{
+ buffer_append(&outgoing_packet, buf, len);
+}
+
/* Appends an arbitrary precision integer to packet data. */
{
buffer_put_bignum(&outgoing_packet, value);
}
+void
+packet_put_bignum2(BIGNUM * value)
+{
+ buffer_put_bignum2(&outgoing_packet, value);
+}
/*
* Finalizes and sends the packet. If the encryption key has been set,
*length_ptr = buffer_get_bignum(&incoming_packet, value);
}
+void
+packet_get_bignum2(BIGNUM * value, int *length_ptr)
+{
+ *length_ptr = buffer_get_bignum2(&incoming_packet, value);
+}
+
+char *
+packet_get_raw(int *length_ptr)
+{
+ int bytes = buffer_len(&incoming_packet);
+ if (length_ptr != NULL)
+ *length_ptr = bytes;
+ return buffer_ptr(&incoming_packet);
+}
+
/*
* Returns a string from the packet data. The string is allocated using
* xmalloc; it is the responsibility of the calling program to free it when
*
*/
-/* RCSID("$Id: packet.h,v 1.10 2000/03/16 20:56:14 markus Exp $"); */
+/* RCSID("$Id: packet.h,v 1.11 2000/04/03 07:07:15 markus Exp $"); */
#ifndef PACKET_H
#define PACKET_H
/* Appends an arbitrary precision integer to packet data. */
void packet_put_bignum(BIGNUM * value);
+void packet_put_bignum2(BIGNUM * value);
/* Appends a string to packet data. */
void packet_put_string(const char *buf, unsigned int len);
+void packet_put_cstring(const char *str);
+void packet_put_raw(const char *buf, unsigned int len);
/*
* Finalizes and sends the packet. If the encryption key has been set,
* must have been initialized before this call.
*/
void packet_get_bignum(BIGNUM * value, int *length_ptr);
+void packet_get_bignum2(BIGNUM * value, int *length_ptr);
+char *packet_get_raw(int *length_ptr);
/*
* Returns a string from the packet data. The string is allocated using
projects / openbsd / commitdiff