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#include "../crypto.h"
#include <stdio.h>
#include <stdint.h>
struct jenkins_oaat_hash jenkins_oaat_init(){
return (struct jenkins_oaat_hash){.hash = 0};
}
void jenkins_oaat_update(uint8_t* in, size_t len, struct jenkins_oaat_hash* hash){
for(int i = 0; i != len;){
hash->hash += in[i++];
hash->hash += hash->hash << 10;
hash->hash ^= hash->hash >> 6;
}
}
uint32_t jenkins_oaat_final(struct jenkins_oaat_hash* hash){
uint32_t h = hash->hash;
h += h << 3;
h ^= h >> 11;
h += h << 15;
return h;
}
uint32_t jenkins_oaat(uint8_t* in, size_t len){
struct jenkins_oaat_hash a = jenkins_oaat_init();
jenkins_oaat_update(in, len, &a);
return jenkins_oaat_final(&a);
}
lua_common_hash_clone(jenkins_oaat, oaat);
lua_common_hash_init_update(jenkins_oaat, oaat);
int l_oaat_final(lua_State* L){
struct jenkins_oaat_hash* a = (struct jenkins_oaat_hash*)lua_touserdata(L, 1);
uint32_t u = jenkins_oaat_final(a);
char digest[64];
sprintf(digest,"%04x",u);
lua_pushstring(L, digest);
return 1;
}
int l_oaat(lua_State* L){
if(lua_gettop(L) == 0) return l_oaat_init(L);
size_t len = 0;
uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);
char digest[64];
uint32_t u = jenkins_oaat(a, len);
sprintf(digest,"%04x",u);
lua_pushstring(L, digest);
return 1;
}
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