#include <string.h>
#include <assert.h>
+#include "misc.h"
#include "int64.h"
#include "sftp.h"
-#define smalloc malloc
-#define srealloc realloc
-#define sfree free
-
#define GET_32BIT(cp) \
(((unsigned long)(unsigned char)(cp)[0] << 24) | \
((unsigned long)(unsigned char)(cp)[1] << 16) | \
int type;
};
+static const char *fxp_error_message;
+static int fxp_errtype;
+
/* ----------------------------------------------------------------------
* SFTP packet construction functions.
*/
sftp_pkt_addstring_start(pkt);
sftp_pkt_addstring_str(pkt, data);
}
+static void sftp_pkt_addattrs(struct sftp_packet *pkt, struct fxp_attrs attrs)
+{
+ sftp_pkt_adduint32(pkt, attrs.flags);
+ if (attrs.flags & SSH_FILEXFER_ATTR_SIZE) {
+ sftp_pkt_adduint32(pkt, attrs.size.hi);
+ sftp_pkt_adduint32(pkt, attrs.size.lo);
+ }
+ if (attrs.flags & SSH_FILEXFER_ATTR_UIDGID) {
+ sftp_pkt_adduint32(pkt, attrs.uid);
+ sftp_pkt_adduint32(pkt, attrs.gid);
+ }
+ if (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) {
+ sftp_pkt_adduint32(pkt, attrs.permissions);
+ }
+ if (attrs.flags & SSH_FILEXFER_ATTR_ACMODTIME) {
+ sftp_pkt_adduint32(pkt, attrs.atime);
+ sftp_pkt_adduint32(pkt, attrs.mtime);
+ }
+ if (attrs.flags & SSH_FILEXFER_ATTR_EXTENDED) {
+ /*
+ * We currently don't support sending any extended
+ * attributes.
+ */
+ }
+}
/* ----------------------------------------------------------------------
* SFTP packet decode functions.
* SFTP primitives.
*/
-static const char *fxp_error_message;
-static int fxp_errtype;
-
/*
* Deal with (and free) an FXP_STATUS packet. Return 1 if
* SSH_FX_OK, 0 if SSH_FX_EOF, and -1 for anything else (error).
}
if (pktin->type != SSH_FXP_VERSION) {
fxp_internal_error("did not receive FXP_VERSION");
+ sftp_pkt_free(pktin);
return 0;
}
remotever = sftp_pkt_getuint32(pktin);
if (remotever > SFTP_PROTO_VERSION) {
fxp_internal_error
("remote protocol is more advanced than we support");
+ sftp_pkt_free(pktin);
return 0;
}
/*
sftp_pkt_addstring_str(pktout, path);
sftp_send(pktout);
pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return NULL;
+ }
id = sftp_pkt_getuint32(pktin);
if (id != 0x123) {
fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
return NULL;
}
if (pktin->type == SSH_FXP_NAME) {
count = sftp_pkt_getuint32(pktin);
if (count != 1) {
fxp_internal_error("REALPATH returned name count != 1\n");
+ sftp_pkt_free(pktin);
return NULL;
}
sftp_pkt_getstring(pktin, &path, &len);
if (!path) {
fxp_internal_error("REALPATH returned malformed FXP_NAME\n");
+ sftp_pkt_free(pktin);
return NULL;
}
path = mkstr(path, len);
return path;
} else {
fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
return NULL;
}
}
sftp_pkt_adduint32(pktout, 0); /* (FIXME) empty ATTRS structure */
sftp_send(pktout);
pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return NULL;
+ }
id = sftp_pkt_getuint32(pktin);
if (id != 0x567) {
fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
return NULL;
}
if (pktin->type == SSH_FXP_HANDLE) {
sftp_pkt_getstring(pktin, &hstring, &len);
if (!hstring) {
fxp_internal_error("OPEN returned malformed FXP_HANDLE\n");
+ sftp_pkt_free(pktin);
return NULL;
}
handle = smalloc(sizeof(struct fxp_handle));
return handle;
} else {
fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
return NULL;
}
}
sftp_pkt_addstring(pktout, path);
sftp_send(pktout);
pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return NULL;
+ }
id = sftp_pkt_getuint32(pktin);
if (id != 0x456) {
fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
return NULL;
}
if (pktin->type == SSH_FXP_HANDLE) {
sftp_pkt_getstring(pktin, &hstring, &len);
if (!hstring) {
fxp_internal_error("OPENDIR returned malformed FXP_HANDLE\n");
+ sftp_pkt_free(pktin);
return NULL;
}
handle = smalloc(sizeof(struct fxp_handle));
return handle;
} else {
fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
return NULL;
}
}
sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
sftp_send(pktout);
pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return;
+ }
id = sftp_pkt_getuint32(pktin);
if (id != 0x789) {
fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
return;
}
fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
sfree(handle->hstring);
sfree(handle);
}
+int fxp_mkdir(char *path)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_MKDIR);
+ sftp_pkt_adduint32(pktout, 0x234); /* request id */
+ sftp_pkt_addstring(pktout, path);
+ sftp_pkt_adduint32(pktout, 0); /* (FIXME) empty ATTRS structure */
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return 0;
+ }
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x234) {
+ fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+ id = fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
+ if (id != 1) {
+ return 0;
+ }
+ return 1;
+}
+
+int fxp_rmdir(char *path)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_RMDIR);
+ sftp_pkt_adduint32(pktout, 0x345); /* request id */
+ sftp_pkt_addstring(pktout, path);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return 0;
+ }
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x345) {
+ fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+ id = fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
+ if (id != 1) {
+ return 0;
+ }
+ return 1;
+}
+
+int fxp_remove(char *fname)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_REMOVE);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring(pktout, fname);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return 0;
+ }
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+ id = fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
+ if (id != 1) {
+ return 0;
+ }
+ return 1;
+}
+
+int fxp_rename(char *srcfname, char *dstfname)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_RENAME);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring(pktout, srcfname);
+ sftp_pkt_addstring(pktout, dstfname);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return 0;
+ }
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+ id = fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
+ if (id != 1) {
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * Retrieve the attributes of a file. We have fxp_stat which works
+ * on filenames, and fxp_fstat which works on open file handles.
+ */
+int fxp_stat(char *fname, struct fxp_attrs *attrs)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_STAT);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring(pktout, fname);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return 0;
+ }
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+
+ if (pktin->type == SSH_FXP_ATTRS) {
+ *attrs = sftp_pkt_getattrs(pktin);
+ sftp_pkt_free(pktin);
+ return 1;
+ } else {
+ fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+}
+
+int fxp_fstat(struct fxp_handle *handle, struct fxp_attrs *attrs)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_FSTAT);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring_start(pktout);
+ sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return 0;
+ }
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+
+ if (pktin->type == SSH_FXP_ATTRS) {
+ *attrs = sftp_pkt_getattrs(pktin);
+ sftp_pkt_free(pktin);
+ return 1;
+ } else {
+ fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+}
+
+/*
+ * Set the attributes of a file.
+ */
+int fxp_setstat(char *fname, struct fxp_attrs attrs)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_SETSTAT);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring(pktout, fname);
+ sftp_pkt_addattrs(pktout, attrs);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return 0;
+ }
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+ id = fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
+ if (id != 1) {
+ return 0;
+ }
+ return 1;
+}
+int fxp_fsetstat(struct fxp_handle *handle, struct fxp_attrs attrs)
+{
+ struct sftp_packet *pktin, *pktout;
+ int id;
+
+ pktout = sftp_pkt_init(SSH_FXP_FSETSTAT);
+ sftp_pkt_adduint32(pktout, 0x678); /* request id */
+ sftp_pkt_addstring_start(pktout);
+ sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
+ sftp_pkt_addattrs(pktout, attrs);
+ sftp_send(pktout);
+ pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return 0;
+ }
+ id = sftp_pkt_getuint32(pktin);
+ if (id != 0x678) {
+ fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
+ return 0;
+ }
+ id = fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
+ if (id != 1) {
+ return 0;
+ }
+ return 1;
+}
+
/*
* Read from a file. Returns the number of bytes read, or -1 on an
* error, or possibly 0 if EOF. (I'm not entirely sure whether it
sftp_pkt_adduint32(pktout, len);
sftp_send(pktout);
pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return -1;
+ }
id = sftp_pkt_getuint32(pktin);
if (id != 0xBCD) {
fxp_internal_error("request ID mismatch");
+ sftp_pkt_free(pktin);
return -1;
}
if (pktin->type == SSH_FXP_DATA) {
if (rlen > len || rlen < 0) {
fxp_internal_error("READ returned more bytes than requested");
+ sftp_pkt_free(pktin);
return -1;
}
memcpy(buffer, str, rlen);
- sfree(pktin);
+ sftp_pkt_free(pktin);
return rlen;
} else {
fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
return -1;
}
}
sftp_pkt_addstring_data(pktout, handle->hstring, handle->hlen);
sftp_send(pktout);
pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return NULL;
+ }
id = sftp_pkt_getuint32(pktin);
if (id != 0xABC) {
fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
return NULL;
}
if (pktin->type == SSH_FXP_NAME) {
ret->names[i].longname = mkstr(str, len);
ret->names[i].attrs = sftp_pkt_getattrs(pktin);
}
+ sftp_pkt_free(pktin);
return ret;
} else {
fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
return NULL;
}
}
sftp_pkt_addstring_data(pktout, buffer, len);
sftp_send(pktout);
pktin = sftp_recv();
+ if (!pktin) {
+ fxp_internal_error("did not receive a valid SFTP packet\n");
+ return 0;
+ }
id = sftp_pkt_getuint32(pktin);
if (id != 0xDCB) {
fxp_internal_error("request ID mismatch\n");
+ sftp_pkt_free(pktin);
return 0;
}
fxp_got_status(pktin);
+ sftp_pkt_free(pktin);
return fxp_errtype == SSH_FX_OK;
}
projects / u / mdw / putty / blobdiff