X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/putty/blobdiff_plain/65857773290a7bacd6f5d84ab51a9c1228e61e99..efc411b3434927aaf76dc5528d587ef8c1e299d4:/psftp.c

diff --git a/psftp.c b/psftp.c
index 8dcee0e2..1612b3b2 100644
--- a/psftp.c
+++ b/psftp.c
@@ -41,14 +41,6 @@ static Config cfg;
  */
 
 /*
- * Determine whether a string is entirely composed of dots.
- */
-static int is_dots(char *str)
-{
-    return str[strspn(str, ".")] == '\0';
-}
-
-/*
  * Attempt to canonify a pathname starting from the pwd. If
  * canonification fails, at least fall back to returning a _valid_
  * pathname (though it may be ugly, eg /home/simon/../foobar).
@@ -291,10 +283,19 @@ int sftp_get_file(char *fname, char *outfname, int recurse, int restart,
 		    ournames = sresize(ournames, namesize, struct fxp_name *);
 		}
 		for (i = 0; i < names->nnames; i++)
-		    if (!is_dots(names->names[i].filename) &&
+		    if (strcmp(names->names[i].filename, ".") &&
+			strcmp(names->names[i].filename, "..") &&
 			(!wildcard || wc_match(wildcard,
-					       names->names[i].filename)))
-			ournames[nnames++] = fxp_dup_name(&names->names[i]);
+					       names->names[i].filename))) {
+			if (!vet_filename(names->names[i].filename)) {
+			    printf("ignoring potentially dangerous server-"
+				   "supplied filename '%s'\n",
+				   names->names[i].filename);
+			} else {
+			    ournames[nnames++] =
+				fxp_dup_name(&names->names[i]);
+			}
+		    }
 		fxp_free_names(names);
 	    }
 	    sftp_register(req = fxp_close_send(dirhandle));
@@ -767,6 +768,23 @@ int sftp_cmd_quit(struct sftp_command *cmd)
     return -1;
 }
 
+int sftp_cmd_close(struct sftp_command *cmd)
+{
+    if (back == NULL) {
+	printf("psftp: not connected to a host; use \"open host.name\"\n");
+	return 0;
+    }
+
+    if (back != NULL && back->socket(backhandle) != NULL) {
+	char ch;
+	back->special(backhandle, TS_EOF);
+	sftp_recvdata(&ch, 1);
+    }
+    do_sftp_cleanup();
+
+    return 0;
+}
+
 /*
  * List a directory. If no arguments are given, list pwd; otherwise
  * list the directory given in words[1].
@@ -1632,6 +1650,14 @@ static struct sftp_cmd_lookup {
 	    sftp_cmd_chmod
     },
     {
+	"close", TRUE, "finish your SFTP session but do not quit PSFTP",
+	    "\n"
+	    "  Terminates your SFTP session, but does not quit the PSFTP\n"
+	    "  program. You can then use \"open\" to start another SFTP\n"
+	    "  session, to the same server or to a different one.\n",
+	    sftp_cmd_close
+    },
+    {
 	"del", TRUE, "delete a file",
 	    " <filename>\n"
 	    "  Delete a file.\n",
@@ -2579,12 +2605,10 @@ int psftp_main(int argc, char *argv[])
 	back->special(backhandle, TS_EOF);
 	sftp_recvdata(&ch, 1);
     }
+    do_sftp_cleanup();
     random_save_seed();
     cmdline_cleanup();
     console_provide_logctx(NULL);
-    do_sftp_cleanup();
-    backhandle = NULL;
-    back = NULL;
     sk_cleanup();
 
     return 0;