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mod_magnet: add traceback for printing lua errors 

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@2681 152afb58-edef-0310-8abb-c4023f1b3aa9
This commit is contained in:
Stefan Bühler 2009-10-26 14:16:20 +00:00
parent 07ae3fb815
commit f5f6b954b0
2 changed files with 32 additions and 1 deletions
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1
NEWS
View File

@ -5,6 +5,7 @@ NEWS
- 1.4.25 -
* mod_magnet: fix pairs() for normal tables and strings (fixes #1307)
* mod_magnet: add traceback for printing lua errors
- 1.4.24 - 2009-10-25
* Add T_CONFIG_INT for bigger integers from the config (needed for #1966)

32
src/mod_magnet.c
View File

@ -825,9 +825,36 @@ static int magnet_attach_content(server *srv, connection *con, plugin_data *p, l
return 0;
}
static int traceback (lua_State *L) {
if (!lua_isstring(L, 1)) /* 'message' not a string? */
return 1; /* keep it intact */
lua_getfield(L, LUA_GLOBALSINDEX, "debug");
if (!lua_istable(L, -1)) {
lua_pop(L, 1);
return 1;
}
lua_getfield(L, -1, "traceback");
if (!lua_isfunction(L, -1)) {
lua_pop(L, 2);
return 1;
}
lua_pushvalue(L, 1); /* pass error message */
lua_pushinteger(L, 2); /* skip this function and traceback */
lua_call(L, 2, 1); /* call debug.traceback */
return 1;
}
static int push_traceback(lua_State *L, int narg) {
int base = lua_gettop(L) - narg; /* function index */
lua_pushcfunction(L, traceback);
lua_insert(L, base);
return base;
}
static handler_t magnet_attract(server *srv, connection *con, plugin_data *p, buffer *name) {
lua_State *L;
int lua_return_value = -1;
int errfunc;
/* get the script-context */
@ -956,7 +983,9 @@ static handler_t magnet_attract(server *srv, connection *con, plugin_data *p, bu
lua_setfenv(L, -2); /* on the stack should be a modified env (sp -= 1) */
if (lua_pcall(L, 0, 1, 0)) {
errfunc = push_traceback(L, 0);
if (lua_pcall(L, 0, 1, errfunc)) {
lua_remove(L, errfunc);
log_error_write(srv, __FILE__, __LINE__,
"ss",
"lua_pcall():",
@ -970,6 +999,7 @@ static handler_t magnet_attract(server *srv, connection *con, plugin_data *p, bu
return HANDLER_FINISHED;
}
lua_remove(L, errfunc);
/* we should have the function-copy and the return value on the stack */
assert(lua_gettop(L) == 2);