From d422c77ae8e0cb1211b34eb4af442600b0da8d5b Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 1 Nov 2020 14:15:40 -0700 Subject: setexpr: Add some tests for buffer overflow and backref Add tests to check for buffer overflow using simple replacement as well as back references. At present these don't fully pass. Signed-off-by: Simon Glass --- include/command.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/command.h') diff --git a/include/command.h b/include/command.h index e900f97df3..e229bf2825 100644 --- a/include/command.h +++ b/include/command.h @@ -183,6 +183,23 @@ extern int do_env_set_efi(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]); #endif +/** + * setexpr_regex_sub() - Replace a regex pattern with a string + * + * @data: Buffer containing the string to update + * @data_size: Size of buffer (must be large enough for the new string) + * @nbuf: Back-reference buffer + * @nbuf_size: Size of back-reference buffer (must be larger enough for @s plus + * all back-reference expansions) + * @r: Regular expression to find + * @s: String to replace with + * @global: true to replace all matches in @data, false to replace just the + * first + * @return 0 if OK, 1 on error + */ +int setexpr_regex_sub(char *data, uint data_size, char *nbuf, uint nbuf_size, + const char *r, const char *s, bool global); + /* * Error codes that commands return to cmd_process(). We use the standard 0 * and 1 for success and failure, but add one more case - failure with a -- cgit v1.2.3