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BUG/MEDIUM: lua: Fix dumping of stick table entries for STD_T_DICT

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The issue can easily be reproduced with "stick on" statement

backend BE_NAME
    stick-table type ip size 1k
    stick on src

and calling dump() method on BE_NAME stick table from Lua

Before the fix, HAProxy would return 500 and log something like
the following:
  runtime error: attempt to index a string value from [C] method 'dump'

Where one would expect a Lua table like this:

{
    ["IP_ADDR"] = {
        ["server_id"] = 1,
        ["server_name"] = "srv1"
    }
}

This patch needs to backported to 1.9 and later releases.
This commit is contained in:
Adis Nezirovic 2020-05-05 13:57:28 +02:00 committed by Christopher Faulet
parent 083eff3734
commit ad9f9ed3f4
1 changed files with 6 additions and 0 deletions
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6
src/hlua_fcn.c
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@ -588,6 +588,12 @@ static void hlua_stktable_entry(lua_State *L, struct stktable *t, struct stksess
lua_pushinteger(L, read_freq_ctr_period(&stktable_data_cast(ptr, std_t_frqp),
t->data_arg[dt].u));
break;
case STD_T_DICT: {
struct dict_entry *de;
de = stktable_data_cast(ptr, std_t_dict);
lua_pushstring(L, de ? (char *)de->value.key : "-");
break;
}
}
lua_settable(L, -3);