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MINOR: lua: Add date functions

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This patch add date parsing function in Lua API. These function
are usefull for parsing standard HTTP date provided in headers.
This commit is contained in:
Thierry Fournier 2016-01-21 09:35:41 +01:00 committed by Willy Tarreau
parent 9312794ed7
commit 1550d5d035
1 changed files with 55 additions and 1 deletions
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56
src/hlua_fcn.c
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@ -22,6 +22,56 @@ int hlua_now(lua_State *L)
return 1;
}
/* This functions expects a Lua string as HTTP date, parse it and
* returns an integer containing the epoch format of the date, or
* nil if the parsing fails.
*/
static int hlua_parse_date(lua_State *L, int (*fcn)(const char *, int, struct tm*))
{
const char *str;
size_t len;
struct tm tm;
time_t time;
str = luaL_checklstring(L, 1, &len);
if (!fcn(str, len, &tm)) {
lua_pushnil(L);
return 1;
}
/* This function considers the content of the broken-down time
* is exprimed in the UTC timezone. timegm don't care about
* the gnu variable tm_gmtoff. If gmtoff is set, or if you know
* the timezone from the broken-down time, it must be fixed
* after the conversion.
*/
time = timegm(&tm);
if (time == -1) {
lua_pushnil(L);
return 1;
}
lua_pushinteger(L, (int)time);
return 1;
}
static int hlua_http_date(lua_State *L)
{
return hlua_parse_date(L, parse_http_date);
}
static int hlua_imf_date(lua_State *L)
{
return hlua_parse_date(L, parse_imf_date);
}
static int hlua_rfc850_date(lua_State *L)
{
return hlua_parse_date(L, parse_rfc850_date);
}
static int hlua_asctime_date(lua_State *L)
{
return hlua_parse_date(L, parse_asctime_date);
}
static void hlua_array_add_fcn(lua_State *L, const char *name,
int (*function)(lua_State *L))
{
@ -33,5 +83,9 @@ static void hlua_array_add_fcn(lua_State *L, const char *name,
int hlua_fcn_reg_core_fcn(lua_State *L)
{
hlua_array_add_fcn(L, "now", hlua_now);
return 1;
hlua_array_add_fcn(L, "http_date", hlua_http_date);
hlua_array_add_fcn(L, "imf_date", hlua_imf_date);
hlua_array_add_fcn(L, "rfc850_date", hlua_rfc850_date);
hlua_array_add_fcn(L, "asctime_date", hlua_asctime_date);
return 5;
}