fluencelabs/redis
1
0
Fork 0
mirror of https://github.com/fluencelabs/redis synced 2025-03-18 16:40:50 +00:00
Code Issues Projects Releases Wiki Activity

Fixed nul bulk parsing in Redis protocol to Lua type convertion. Check for bad Lua types as arguements of the redis() Lua command.

Browse Source
This commit is contained in:
antirez 2011-05-01 23:43:10 +02:00
parent 67e829dce5
commit 379789cc52
2 changed files with 30 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/SCRIPTING.txt
View File

@ -3,3 +3,4 @@ TODO:
redis('get',1) => crash
Check what happens abotu MULTI/EXEC
Prevent Lua from calling itself with redis("eval",...)
Implement log() function, and define REDIS_WARNING, REDIS_NOTICE, ...

37
src/scripting.c
View File

@ -67,7 +67,7 @@ char *redisProtocolToLuaType_Bulk(lua_State *lua, char *reply) {
long long bulklen;
string2ll(reply+1,p-reply-1,&bulklen);
if (bulklen == 0) {
if (bulklen == -1) {
lua_pushnil(lua);
return p+2;
} else {
@ -113,6 +113,13 @@ char *redisProtocolToLuaType_MultiBulk(lua_State *lua, char *reply) {
return p;
}
void luaPushError(lua_State *lua, char *error) {
lua_newtable(lua);
lua_pushstring(lua,"err");
lua_pushstring(lua, error);
lua_settable(lua,-3);
}
int luaRedisCommand(lua_State *lua) {
int j, argc = lua_gettop(lua);
struct redisCommand *cmd;
@ -122,9 +129,26 @@ int luaRedisCommand(lua_State *lua) {
/* Build the arguments vector */
argv = zmalloc(sizeof(robj*)*argc);
for (j = 0; j < argc; j++)
for (j = 0; j < argc; j++) {
if (!lua_isstring(lua,j+1)) break;
argv[j] = createStringObject((char*)lua_tostring(lua,j+1),
lua_strlen(lua,j+1));
}
/* Check if one of the arguments passed by the Lua script
* is not a string or an integer (lua_isstring() return true for
* integers as well). */
if (j != argc) {
j--;
while (j >= 0) {
decrRefCount(argv[j]);
j--;
}
zfree(argv);
luaPushError(lua,
"Lua redis() command arguments must be strings or integers");
return 1;
}
/* Command lookup */
cmd = lookupCommand(argv[0]->ptr);
@ -133,14 +157,11 @@ int luaRedisCommand(lua_State *lua) {
{
for (j = 0; j < argc; j++) decrRefCount(argv[j]);
zfree(argv);
lua_newtable(lua);
lua_pushstring(lua,"err");
if (cmd)
lua_pushstring(lua,
luaPushError(lua,
"Wrong number of args calling Redis command From Lua script");
else
lua_pushstring(lua,"Unknown Redis command called from Lua script");
lua_settable(lua,-3);
luaPushError(lua,"Unknown Redis command called from Lua script");
return 1;
}
@ -309,7 +330,7 @@ void evalCommand(redisClient *c) {
funcdef = sdscatlen(funcdef," ()\n",4);
funcdef = sdscatlen(funcdef,c->argv[1]->ptr,sdslen(c->argv[1]->ptr));
funcdef = sdscatlen(funcdef,"\nend\n",5);
printf("Defining:\n%s\n",funcdef);
/* printf("Defining:\n%s\n",funcdef); */
if (luaL_loadbuffer(lua,funcdef,sdslen(funcdef),"func definition")) {
addReplyErrorFormat(c,"Error compiling script (new function): %s\n",