From 4aca87515a5083ae0e31ce3177189fd43b6d05ac Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sat, 3 Jan 2015 13:58:15 +0100 Subject: patch to Vanilla Tomato 1.28 --- .../src/router/busybox/libbb/die_if_bad_username.c | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 release/src/router/busybox/libbb/die_if_bad_username.c (limited to 'release/src/router/busybox/libbb/die_if_bad_username.c') diff --git a/release/src/router/busybox/libbb/die_if_bad_username.c b/release/src/router/busybox/libbb/die_if_bad_username.c new file mode 100644 index 00000000..c1641d37 --- /dev/null +++ b/release/src/router/busybox/libbb/die_if_bad_username.c @@ -0,0 +1,36 @@ +/* vi: set sw=4 ts=4: */ +/* + * Check user and group names for illegal characters + * + * Copyright (C) 2008 Tito Ragusa + * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. + */ + +#include "libbb.h" + +/* To avoid problems, the username should consist only of + * letters, digits, underscores, periods, at signs and dashes, + * and not start with a dash (as defined by IEEE Std 1003.1-2001). + * For compatibility with Samba machine accounts $ is also supported + * at the end of the username. + */ + +void FAST_FUNC die_if_bad_username(const char *name) +{ + goto skip; /* 1st char being dash isn't valid */ + do { + if (*name == '-') + continue; + skip: + if (isalnum(*name) + || *name == '_' + || *name == '.' + || *name == '@' + || (*name == '$' && !*(name + 1)) + ) { + continue; + } + bb_error_msg_and_die("illegal character '%c'", *name); + } while (*++name); +} -- cgit v1.2.3-54-g00ecf