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util.encodings: Strictly verify that the 'strict' *prep argument is a boolean

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This is to prevent mistakes like nodeprep(username:gsub("a","b")) from
unintentionally invoking strict mode.
This commit is contained in:
Kim Alvefur 2019-10-30 16:22:44 +01:00
parent 31d6d1a42b
commit 42aeda373c
1 changed files with 10 additions and 4 deletions
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14
util-src/encodings.c
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@ -296,8 +296,11 @@ static int icu_stringprep_prep(lua_State *L, const UStringPrepProfile *profile)
}
/* strict */
if(lua_toboolean(L, 2)) {
flags = 0;
if(!lua_isnoneornil(L, 2)) {
luaL_checktype(L, 2, LUA_TBOOLEAN);
if(lua_toboolean(L, 2)) {
flags = 0;
}
}
u_strFromUTF8(unprepped, 1024, &unprepped_len, input, input_len, &err);
@ -413,8 +416,11 @@ static int stringprep_prep(lua_State *L, const Stringprep_profile *profile) {
s = check_utf8(L, 1, &len);
/* strict */
if(lua_toboolean(L, 2)) {
flags = STRINGPREP_NO_UNASSIGNED;
if(!lua_isnoneornil(L, 2)) {
luaL_checktype(L, 2, LUA_TBOOLEAN);
if(lua_toboolean(L, 2)) {
flags = STRINGPREP_NO_UNASSIGNED;
}
}
if(s == NULL || len >= 1024 || len != strlen(s)) {