- added a mangling test suite that measures the collision rate on

randomised filenames

- fixed several mangling bugs that the test suite pointed out
(This used to be commit 858fa7efc34f6e7cdf8500900aed3f7943c91348)

1 files changed, 162 insertions, 0 deletions

diff --git a/source3/torture/mangle_test.c b/source3/torture/mangle_test.c
new file mode 100644
index 0000000000..9024925beb
--- /dev/null
+++ b/source3/torture/mangle_test.c
@@ -0,0 +1,162 @@
+/* 
+   Unix SMB/CIFS implementation.
+   SMB torture tester - mangling test
+   Copyright (C) Andrew Tridgell 2002
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+static TDB_CONTEXT *tdb;
+
+#define NAME_LENGTH 30
+
+static unsigned total, collisions;
+
+static BOOL test_one(struct cli_state *cli, const char *name)
+{
+	int fnum;
+	fstring shortname;
+	fstring name2;
+	NTSTATUS status;
+	TDB_DATA data;
+
+	total++;
+
+	fnum = cli_open(cli, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
+	if (fnum == -1) {
+		printf("open of %s failed (%s)\n", name, cli_errstr(cli));
+		return False;
+	}
+
+	if (!cli_close(cli, fnum)) {
+		printf("close of %s failed (%s)\n", name, cli_errstr(cli));
+		return False;
+	}
+
+	/* get the short name */
+	status = cli_qpathinfo_alt_name(cli, name, shortname);
+	if (!NT_STATUS_IS_OK(status)) {
+		printf("query altname of %s failed (%s)\n", name, cli_errstr(cli));
+		return False;
+	}
+
+	snprintf(name2, sizeof(name2), "\\mangle_test\\%s", shortname);
+	if (!cli_unlink(cli, name2)) {
+		printf("unlink of %s  (%s) failed (%s)\n", 
+		       name2, name, cli_errstr(cli));
+		return False;
+	}
+
+	/* see if the short name is already in the tdb */
+	data = tdb_fetch_by_string(tdb, shortname);
+	if (data.dptr) {
+		/* maybe its a duplicate long name? */
+		if (strcasecmp(name, data.dptr) != 0) {
+			/* we have a collision */
+			collisions++;
+			printf("Collision between %s and %s   ->  %s\n", 
+			       name, data.dptr, shortname);
+		}
+		free(data.dptr);
+	} else {
+		/* store it for later */
+		tdb_store_by_string(tdb, shortname, name, strlen(name)+1);
+	}
+
+	return True;
+}
+
+
+static void gen_name(char *name)
+{
+	const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~";
+	unsigned max_idx = strlen(chars);
+	unsigned len;
+	int i;
+	char *p;
+
+	fstrcpy(name, "\\mangle_test\\");
+	p = name + strlen(name);
+
+	len = 1 + random() % NAME_LENGTH;
+	
+	for (i=0;i<len;i++) {
+		p[i] = chars[random() % max_idx];
+	}
+
+	p[i] = 0;
+
+	if (strcmp(p, ".") == 0 || strcmp(p, "..") == 0) {
+		p[0] = '_';
+	}
+}
+
+
+BOOL torture_mangle(int dummy)
+{
+	extern int torture_numops;
+	static struct cli_state cli;
+	int i;
+
+	printf("starting mangle test\n");
+
+	if (!torture_open_connection(&cli)) {
+		return False;
+	}
+
+	/* we will use an internal tdb to store the names we have used */
+	tdb = tdb_open(NULL, 100000, TDB_INTERNAL, 0, 0);
+	if (!tdb) {
+		printf("ERROR: Failed to open tdb\n");
+		return False;
+	}
+
+	cli_unlink(&cli, "\\mangle_test\\*");
+	cli_rmdir(&cli, "\\mangle_test");
+
+	if (!cli_mkdir(&cli, "\\mangle_test")) {
+		printf("ERROR: Failed to make directory\n");
+		return False;
+	}
+
+	for (i=0;i<torture_numops;i++) {
+		fstring name;
+
+		gen_name(name);
+
+		if (!test_one(&cli, name)) {
+			break;
+		}
+		if (total && total % 100 == 0) {
+			printf("collisions %u/%u  - %.2f%%\r",
+			       collisions, total, (100.0*collisions) / total);
+		}
+	}
+
+	if (!cli_rmdir(&cli, "\\mangle_test")) {
+		printf("ERROR: Failed to remove directory\n");
+		return False;
+	}
+
+	printf("\nTotal collisions %u/%u  - %.2f%%\n",
+	       collisions, total, (100.0*collisions) / total);
+
+	torture_close_connection(&cli);
+
+	printf("mangle test finished\n");
+	return True;
+}