- OpenBSD CVS Sync
- djm@cvs.openbsd.org 2001/03/07 10:11:23
[sftp-client.c sftp-client.h sftp-int.c sftp-server.c sftp.1 sftp.c sftp.h]
Support for new draft (draft-ietf-secsh-filexfer-01). New symlink handling
functions and small protocol change.
diff --git a/sftp-server.c b/sftp-server.c
index 6575eb9..1780845 100644
--- a/sftp-server.c
+++ b/sftp-server.c
@@ -22,7 +22,7 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "includes.h"
-RCSID("$OpenBSD: sftp-server.c,v 1.22 2001/03/03 22:07:50 deraadt Exp $");
+RCSID("$OpenBSD: sftp-server.c,v 1.23 2001/03/07 10:11:23 djm Exp $");
#include "buffer.h"
#include "bufaux.h"
@@ -49,6 +49,9 @@
Buffer iqueue;
Buffer oqueue;
+/* Version of client */
+int version;
+
/* portable attibutes, etc. */
typedef struct Stat Stat;
@@ -266,12 +269,29 @@
send_status(u_int32_t id, u_int32_t error)
{
Buffer msg;
+ const char *status_messages[] = {
+ "Success", /* SSH_FX_OK */
+ "End of file", /* SSH_FX_EOF */
+ "No such file", /* SSH_FX_NO_SUCH_FILE */
+ "Permission denied", /* SSH_FX_PERMISSION_DENIED */
+ "Failure", /* SSH_FX_FAILURE */
+ "Bad message", /* SSH_FX_BAD_MESSAGE */
+ "No connection", /* SSH_FX_NO_CONNECTION */
+ "Connection lost", /* SSH_FX_CONNECTION_LOST */
+ "Operation unsupported", /* SSH_FX_OP_UNSUPPORTED */
+ "Unknown error" /* Others */
+ };
TRACE("sent status id %d error %d", id, error);
buffer_init(&msg);
buffer_put_char(&msg, SSH2_FXP_STATUS);
buffer_put_int(&msg, id);
buffer_put_int(&msg, error);
+ if (version >= 3) {
+ buffer_put_cstring(&msg,
+ status_messages[MIN(error,SSH2_FX_MAX)]);
+ buffer_put_cstring(&msg, "");
+ }
send_msg(&msg);
buffer_free(&msg);
}
@@ -347,8 +367,8 @@
process_init(void)
{
Buffer msg;
- int version = buffer_get_int(&iqueue);
+ version = buffer_get_int(&iqueue);
TRACE("client version %d", version);
buffer_init(&msg);
buffer_put_char(&msg, SSH2_FXP_VERSION);
@@ -860,6 +880,51 @@
}
void
+process_readlink(void)
+{
+ u_int32_t id;
+ char link[MAXPATHLEN];
+ char *path;
+
+ id = get_int();
+ path = get_string(NULL);
+ TRACE("readlink id %d path %s", id, path);
+ if (readlink(path, link, sizeof(link) - 1) == -1)
+ send_status(id, errno_to_portable(errno));
+ else {
+ Stat s;
+
+ link[sizeof(link) - 1] = '\0';
+ attrib_clear(&s.attrib);
+ s.name = s.long_name = link;
+ send_names(id, 1, &s);
+ }
+ xfree(path);
+}
+
+void
+process_symlink(void)
+{
+ u_int32_t id;
+ struct stat st;
+ char *oldpath, *newpath;
+ int ret, status = SSH2_FX_FAILURE;
+
+ id = get_int();
+ oldpath = get_string(NULL);
+ newpath = get_string(NULL);
+ TRACE("symlink id %d old %s new %s", id, oldpath, newpath);
+ /* fail if 'newpath' exists */
+ if (stat(newpath, &st) == -1) {
+ ret = symlink(oldpath, newpath);
+ status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK;
+ }
+ send_status(id, status);
+ xfree(oldpath);
+ xfree(newpath);
+}
+
+void
process_extended(void)
{
u_int32_t id;
@@ -944,6 +1009,12 @@
case SSH2_FXP_RENAME:
process_rename();
break;
+ case SSH2_FXP_READLINK:
+ process_readlink();
+ break;
+ case SSH2_FXP_SYMLINK:
+ process_symlink();
+ break;
case SSH2_FXP_EXTENDED:
process_extended();
break;