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script.cpp
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script.cpp
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// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
// For more information, see LICENCE in the main folder
//#define DEBUG_DISP
//#define DEBUG_DISASM
//#define DEBUG_RUN
//#define DEBUG_HASH
//#define DEBUG_DUMP_STACK
#include "script.hpp"
#include <math.h>
#include <stdlib.h> // atoi, strtol, strtoll, exit
#include <setjmp.h>
#include <errno.h>
#ifdef PCRE_SUPPORT
#include "../../3rdparty/pcre/include/pcre.h" // preg_match
#endif
#include "../common/cbasetypes.h"
#include "../common/malloc.h"
#include "../common/md5calc.h"
#include "../common/nullpo.h"
#include "../common/random.h"
#include "../common/showmsg.h"
#include "../common/socket.h"
#include "../common/strlib.h"
#include "../common/timer.h"
#include "../common/utils.h"
#include "../common/ers.h" // ers_destroy
#ifdef BETA_THREAD_TEST
#include "../common/atomic.h"
#include "../common/spinlock.h"
#include "../common/thread.h"
#include "../common/mutex.h"
#endif
#include "map.hpp"
#include "path.hpp"
#include "clan.hpp"
#include "clif.hpp"
#include "chrif.hpp"
#include "date.hpp" // date type enum, date_get()
#include "itemdb.hpp"
#include "pc.hpp"
#include "pc_groups.hpp"
#include "storage.hpp"
#include "pet.hpp"
#include "mapreg.hpp"
#include "homunculus.hpp"
#include "instance.hpp"
#include "mercenary.hpp"
#include "intif.hpp"
#include "chat.hpp"
#include "battleground.hpp"
#include "party.hpp"
#include "mail.hpp"
#include "quest.hpp"
#include "elemental.hpp"
#include "npc.hpp"
#include "guild.hpp"
#include "atcommand.hpp"
#include "battle.hpp"
#include "log.hpp"
#include "mob.hpp"
#include "channel.hpp"
#include "achievement.hpp"
struct eri *array_ers;
DBMap *st_db;
unsigned int active_scripts;
unsigned int next_id;
struct eri *st_ers;
struct eri *stack_ers;
static bool script_rid2sd_( struct script_state *st, struct map_session_data** sd, const char *func );
/**
* Get `sd` from a account id in `loc` param instead of attached rid
* @param st Script
* @param loc Location to look account id in script parameter
* @param sd Variable that will be assigned
* @return True if `sd` is assigned, false otherwise
**/
static bool script_accid2sd_(struct script_state *st, uint8 loc, struct map_session_data **sd, const char *func) {
if (script_hasdata(st, loc)) {
int id_ = script_getnum(st, loc);
if (!(*sd = map_id2sd(id_))){
ShowError("%s: Player with account id '%d' is not found.\n", func, id_);
return false;
}else{
return true;
}
}
else
return script_rid2sd_(st,sd,func);
}
/**
* Get `sd` from a char id in `loc` param instead of attached rid
* @param st Script
* @param loc Location to look char id in script parameter
* @param sd Variable that will be assigned
* @return True if `sd` is assigned, false otherwise
**/
static bool script_charid2sd_(struct script_state *st, uint8 loc, struct map_session_data **sd, const char *func) {
if (script_hasdata(st, loc)) {
int id_ = script_getnum(st, loc);
if (!(*sd = map_charid2sd(id_))){
ShowError("%s: Player with char id '%d' is not found.\n", func, id_);
return false;
}else{
return true;
}
}
else
return script_rid2sd_(st,sd,func);
}
/**
* Get `sd` from a nick in `loc` param instead of attached rid
* @param st Script
* @param loc Location to look nick in script parameter
* @param sd Variable that will be assigned
* @return True if `sd` is assigned, false otherwise
**/
static bool script_nick2sd_(struct script_state *st, uint8 loc, struct map_session_data **sd, const char *func) {
if (script_hasdata(st, loc)) {
const char *name_ = script_getstr(st, loc);
if (!(*sd = map_nick2sd(name_,false))){
ShowError("%s: Player with nick '%s' is not found.\n", func, name_);
return false;
}else{
return true;
}
}
else
return script_rid2sd_(st,sd,func);
}
/**
* Get `sd` from a mapid in `loc` param instead of attached rid
* @param st Script
* @param loc Location to look mapid in script parameter
* @param sd Variable that will be assigned
* @return True if `sd` is assigned, false otherwise
**/
static bool script_mapid2sd_(struct script_state *st, uint8 loc, struct map_session_data **sd, const char *func) {
if (script_hasdata(st, loc)) {
int id_ = script_getnum(st, loc);
if (!(*sd = map_id2sd(id_))){
ShowError("%s: Player with map id '%d' is not found.\n", func, id_);
return false;
}else{
return true;
}
}
else
return script_rid2sd_(st,sd,func);
}
/**
* Get `bl` from an ID in `loc` param, if ID is 0 will return the `bl` of the script's activator.
* @param st Script
* @param loc Location to look for ID in script parameter
* @param bl Variable that will be assigned
* @return True if `bl` is assigned, false otherwise
**/
static bool script_rid2bl_(struct script_state *st, uint8 loc, struct block_list **bl, const char *func) {
int unit_id;
if ( !script_hasdata(st, loc) || ( unit_id = script_getnum(st, loc) ) == 0)
unit_id = st->rid;
*bl = map_id2bl(unit_id);
if ( *bl )
return true;
else {
ShowError("%s: Unit with ID '%d' is not found.\n", func, unit_id);
return false;
}
}
#define script_accid2sd(loc,sd) script_accid2sd_(st,(loc),&(sd),__FUNCTION__)
#define script_charid2sd(loc,sd) script_charid2sd_(st,(loc),&(sd),__FUNCTION__)
#define script_nick2sd(loc,sd) script_nick2sd_(st,(loc),&(sd),__FUNCTION__)
#define script_mapid2sd(loc,sd) script_mapid2sd_(st,(loc),&(sd),__FUNCTION__)
#define script_rid2sd(sd) script_rid2sd_(st,&(sd),__FUNCTION__)
#define script_rid2bl(loc,bl) script_rid2bl_(st,(loc),&(bl),__FUNCTION__)
/// temporary buffer for passing around compiled bytecode
/// @see add_scriptb, set_label, parse_script
static unsigned char* script_buf = NULL;
static int script_pos = 0, script_size = 0;
static inline int GETVALUE(const unsigned char* buf, int i)
{
return (int)MakeDWord(MakeWord(buf[i], buf[i+1]), MakeWord(buf[i+2], 0));
}
static inline void SETVALUE(unsigned char* buf, int i, int n)
{
buf[i] = GetByte(n, 0);
buf[i+1] = GetByte(n, 1);
buf[i+2] = GetByte(n, 2);
}
// String buffer structures.
// str_data stores string information
static struct str_data_struct {
enum c_op type;
int str;
int backpatch;
int label;
int (*func)(struct script_state *st);
int val;
int next;
bool deprecated;
} *str_data = NULL;
static int str_data_size = 0; // size of the data
static int str_num = LABEL_START; // next id to be assigned
// str_buf holds the strings themselves
static char *str_buf;
static int str_size = 0; // size of the buffer
static int str_pos = 0; // next position to be assigned
// Using a prime number for SCRIPT_HASH_SIZE should give better distributions
#define SCRIPT_HASH_SIZE 1021
int str_hash[SCRIPT_HASH_SIZE];
// Specifies which string hashing method to use
//#define SCRIPT_HASH_DJB2
//#define SCRIPT_HASH_SDBM
#define SCRIPT_HASH_ELF
static DBMap* scriptlabel_db = NULL; // const char* label_name -> int script_pos
static DBMap* userfunc_db = NULL; // const char* func_name -> struct script_code*
static int parse_options = 0;
DBMap* script_get_label_db(void) { return scriptlabel_db; }
DBMap* script_get_userfunc_db(void) { return userfunc_db; }
// important buildin function references for usage in scripts
static int buildin_set_ref = 0;
static int buildin_callsub_ref = 0;
static int buildin_callfunc_ref = 0;
static int buildin_getelementofarray_ref = 0;
// Caches compiled autoscript item code.
// Note: This is not cleared when reloading itemdb.
static DBMap* autobonus_db = NULL; // char* script -> char* bytecode
struct Script_Config script_config = {
1, // warn_func_mismatch_argtypes
1, 65535, 2048, //warn_func_mismatch_paramnum/check_cmdcount/check_gotocount
0, INT_MAX, // input_min_value/input_max_value
// NOTE: None of these event labels should be longer than <EVENT_NAME_LENGTH> characters
// PC related
"OnPCDieEvent", //die_event_name
"OnPCKillEvent", //kill_pc_event_name
"OnNPCKillEvent", //kill_mob_event_name
"OnPCLoginEvent", //login_event_name
"OnPCLogoutEvent", //logout_event_name
"OnPCLoadMapEvent", //loadmap_event_name
"OnPCBaseLvUpEvent", //baselvup_event_name
"OnPCJobLvUpEvent", //joblvup_event_name
"OnPCStatCalcEvent", //stat_calc_event_name
// NPC related
"OnTouch_", //ontouch_event_name (runs on first visible char to enter area, picks another char if the first char leaves)
"OnTouch", //ontouch2_event_name (run whenever a char walks into the OnTouch area)
"OnTouchNPC", //ontouchnpc_event_name (run whenever a monster walks into the OnTouch area)
"OnWhisperGlobal", //onwhisper_event_name (is executed when a player sends a whisper message to the NPC)
"OnCommand", //oncommand_event_name (is executed by script command cmdothernpc)
"OnBuyItem", //onbuy_event_name (is executed when items are bought)
"OnSellItem", //onsell_event_name (is executed when items are sold)
// Init related
"OnInit", //init_event_name (is executed on all npcs when all npcs were loaded)
"OnInterIfInit", //inter_init_event_name (is executed on inter server connection)
"OnInterIfInitOnce", //inter_init_once_event_name (is only executed on the first inter server connection)
// Guild related
"OnGuildBreak", //guild_break_event_name (is executed on all castles of the guild that is broken)
"OnAgitStart", //agit_start_event_name (is executed when WoE FE is started)
"OnAgitInit", //agit_init_event_name (is executed after all castle owning guilds have been loaded)
"OnAgitEnd", //agit_end_event_name (is executed when WoE FE has ended)
"OnAgitStart2", //agit_start2_event_name (is executed when WoE SE is started)
"OnAgitInit2", //agit_init2_event_name (is executed after all castle owning guilds have been loaded)
"OnAgitEnd2", //agit_end2_event_name (is executed when WoE SE has ended)
"OnAgitStart3", //agit_start3_event_name (is executed when WoE TE is started)
"OnAgitInit3", //agit_init3_event_name (is executed after all castle owning guilds have been loaded)
"OnAgitEnd3", //agit_end3_event_name (is executed when WoE TE has ended)
// Timer related
"OnTimer", //timer_event_name (is executed by a timer at the specific second)
"OnTimerQuit", //timer_quit_event_name (is executed when a timer is aborted)
"OnMinute", //timer_minute_event_name (is executed by a timer at the specific minute)
"OnHour", //timer_hour_event_name (is executed by a timer at the specific hour)
"OnClock", //timer_clock_event_name (is executed by a timer at the specific hour and minute)
"OnDay", //timer_day_event_name (is executed by a timer at the specific month and day)
"OnSun", //timer_sunday_event_name (is executed by a timer on sunday at the specific hour and minute)
"OnMon", //timer_monday_event_name (is executed by a timer on monday at the specific hour and minute)
"OnTue", //timer_tuesday_event_name (is executed by a timer on tuesday at the specific hour and minute)
"OnWed", //timer_wednesday_event_name (is executed by a timer on wednesday at the specific hour and minute)
"OnThu", //timer_thursday_event_name (is executed by a timer on thursday at the specific hour and minute)
"OnFri", //timer_friday_event_name (is executed by a timer on friday at the specific hour and minute)
"OnSat", //timer_saturday_event_name (is executed by a timer on saturday at the specific hour and minute)
// Instance related
"OnInstanceInit", //instance_init_event_name (is executed right after instance creation)
"OnInstanceDestroy", //instance_destroy_event_name (is executed right before instance destruction)
};
static jmp_buf error_jump;
static char* error_msg;
static const char* error_pos;
static int error_report; // if the error should produce output
// Used by disp_warning_message
static const char* parser_current_src;
static const char* parser_current_file;
static int parser_current_line;
// for advanced scripting support ( nested if, switch, while, for, do-while, function, etc )
// [Eoe / jA 1080, 1081, 1094, 1164]
enum curly_type {
TYPE_NULL = 0,
TYPE_IF,
TYPE_SWITCH,
TYPE_WHILE,
TYPE_FOR,
TYPE_DO,
TYPE_USERFUNC,
TYPE_ARGLIST // function argument list
};
enum e_arglist
{
ARGLIST_UNDEFINED = 0,
ARGLIST_NO_PAREN = 1,
ARGLIST_PAREN = 2,
};
static struct {
struct {
enum curly_type type;
int index;
int count;
int flag;
struct linkdb_node *case_label;
} curly[256]; // Information right parenthesis
int curly_count; // The number of right brackets
int index; // Number of the syntax used in the script
} syntax;
const char* parse_curly_close(const char* p);
const char* parse_syntax_close(const char* p);
const char* parse_syntax_close_sub(const char* p,int* flag);
const char* parse_syntax(const char* p);
static int parse_syntax_for_flag = 0;
extern short current_equip_item_index; //for New CARDS Scripts. It contains Inventory Index of the EQUIP_SCRIPT caller item. [Lupus]
extern unsigned int current_equip_combo_pos;
int potion_flag=0; //For use on Alchemist improved potions/Potion Pitcher. [Skotlex]
int potion_hp=0, potion_per_hp=0, potion_sp=0, potion_per_sp=0;
int potion_target = 0;
unsigned int *generic_ui_array = NULL;
unsigned int generic_ui_array_size = 0;
c_op get_com(unsigned char *script,int *pos);
int get_num(unsigned char *script,int *pos);
typedef struct script_function {
int (*func)(struct script_state *st);
const char *name;
const char *arg;
const char *deprecated;
} script_function;
extern script_function buildin_func[];
static struct linkdb_node *sleep_db; // int oid -> struct script_state *
#ifdef BETA_THREAD_TEST
/**
* MySQL Query Slave
**/
static SPIN_LOCK queryThreadLock;
static rAthread queryThread = NULL;
static ramutex queryThreadMutex = NULL;
static racond queryThreadCond = NULL;
static volatile int32 queryThreadTerminate = 0;
struct queryThreadEntry {
bool ok;
bool type; /* main db or log db? */
struct script_state *st;
};
/* Ladies and Gentleman the Manager! */
struct {
struct queryThreadEntry **entry;/* array of structs */
int count;
int timer;/* used to receive processed entries */
} queryThreadData;
#endif
/*==========================================
* (Only those needed) local declaration prototype
*------------------------------------------*/
const char* parse_subexpr(const char* p,int limit);
int run_func(struct script_state *st);
unsigned short script_instancegetid(struct script_state *st);
enum {
MF_NOMEMO, //0
MF_NOTELEPORT,
MF_NOSAVE,
MF_NOBRANCH,
MF_NOPENALTY,
MF_NOZENYPENALTY,
MF_PVP,
MF_PVP_NOPARTY,
MF_PVP_NOGUILD,
MF_GVG,
MF_GVG_NOPARTY, //10
MF_NOTRADE,
MF_NOSKILL,
MF_NOWARP,
MF_PARTYLOCK,
MF_NOICEWALL,
MF_SNOW,
MF_FOG,
MF_SAKURA,
MF_LEAVES,
/**
* No longer available, keeping here just in case it's back someday. [Ind]
**/
//MF_RAIN, //20
// 21 free
MF_NOGO = 22,
MF_CLOUDS,
MF_CLOUDS2,
MF_FIREWORKS,
MF_GVG_CASTLE,
MF_GVG_DUNGEON,
MF_NIGHTENABLED,
MF_NOBASEEXP,
MF_NOJOBEXP, //30
MF_NOMOBLOOT,
MF_NOMVPLOOT,
MF_NORETURN,
MF_NOWARPTO,
MF_NIGHTMAREDROP,
MF_RESTRICTED,
MF_NOCOMMAND,
MF_NODROP,
MF_JEXP,
MF_BEXP, //40
MF_NOVENDING,
MF_LOADEVENT,
MF_NOCHAT,
MF_NOEXPPENALTY,
MF_GUILDLOCK,
MF_TOWN,
MF_AUTOTRADE,
MF_ALLOWKS,
MF_MONSTER_NOTELEPORT,
MF_PVP_NOCALCRANK, //50
MF_BATTLEGROUND,
MF_RESET,
MF_CHANNELAUTOJOIN,
MF_NOUSECART,
MF_NOITEMCONSUMPTION,
MF_SUMSTARTMIRACLE,
MF_NOMINEEFFECT,
MF_NOLOCKON,
MF_NOTOMB,
MF_SKILL_DAMAGE, //60
MF_NOCOSTUME,
MF_GVG_TE_CASTLE,
MF_GVG_TE,
MF_HIDEMOBHPBAR,
};
const char* script_op2name(int op)
{
#define RETURN_OP_NAME(type) case type: return #type
switch( op )
{
RETURN_OP_NAME(C_NOP);
RETURN_OP_NAME(C_POS);
RETURN_OP_NAME(C_INT);
RETURN_OP_NAME(C_PARAM);
RETURN_OP_NAME(C_FUNC);
RETURN_OP_NAME(C_STR);
RETURN_OP_NAME(C_CONSTSTR);
RETURN_OP_NAME(C_ARG);
RETURN_OP_NAME(C_NAME);
RETURN_OP_NAME(C_EOL);
RETURN_OP_NAME(C_RETINFO);
RETURN_OP_NAME(C_USERFUNC);
RETURN_OP_NAME(C_USERFUNC_POS);
RETURN_OP_NAME(C_REF);
// operators
RETURN_OP_NAME(C_OP3);
RETURN_OP_NAME(C_LOR);
RETURN_OP_NAME(C_LAND);
RETURN_OP_NAME(C_LE);
RETURN_OP_NAME(C_LT);
RETURN_OP_NAME(C_GE);
RETURN_OP_NAME(C_GT);
RETURN_OP_NAME(C_EQ);
RETURN_OP_NAME(C_NE);
RETURN_OP_NAME(C_XOR);
RETURN_OP_NAME(C_OR);
RETURN_OP_NAME(C_AND);
RETURN_OP_NAME(C_ADD);
RETURN_OP_NAME(C_SUB);
RETURN_OP_NAME(C_MUL);
RETURN_OP_NAME(C_DIV);
RETURN_OP_NAME(C_MOD);
RETURN_OP_NAME(C_NEG);
RETURN_OP_NAME(C_LNOT);
RETURN_OP_NAME(C_NOT);
RETURN_OP_NAME(C_R_SHIFT);
RETURN_OP_NAME(C_L_SHIFT);
RETURN_OP_NAME(C_ADD_POST);
RETURN_OP_NAME(C_SUB_POST);
RETURN_OP_NAME(C_ADD_PRE);
RETURN_OP_NAME(C_SUB_PRE);
default:
ShowDebug("script_op2name: unexpected op=%d\n", op);
return "???";
}
#undef RETURN_OP_NAME
}
#ifdef DEBUG_DUMP_STACK
static void script_dump_stack(struct script_state* st)
{
int i;
ShowMessage("\tstart = %d\n", st->start);
ShowMessage("\tend = %d\n", st->end);
ShowMessage("\tdefsp = %d\n", st->stack->defsp);
ShowMessage("\tsp = %d\n", st->stack->sp);
for( i = 0; i < st->stack->sp; ++i )
{
struct script_data* data = &st->stack->stack_data[i];
ShowMessage("\t[%d] %s", i, script_op2name(data->type));
switch( data->type )
{
case C_INT:
case C_POS:
ShowMessage(" %d\n", data->u.num);
break;
case C_STR:
case C_CONSTSTR:
ShowMessage(" \"%s\"\n", data->u.str);
break;
case C_NAME:
ShowMessage(" \"%s\" (id=%d ref=%p subtype=%s)\n", reference_getname(data), data->u.num, data->ref, script_op2name(str_data[data->u.num].type));
break;
case C_RETINFO:
{
struct script_retinfo* ri = data->u.ri;
ShowMessage(" %p {scope.vars=%p, scope.arrays=%p, script=%p, pos=%d, nargs=%d, defsp=%d}\n", ri, ri->scope.vars, ri->scope.arrays, ri->script, ri->pos, ri->nargs, ri->defsp);
}
break;
default:
ShowMessage("\n");
break;
}
}
}
#endif
/// Reports on the console the src of a script error.
static void script_reportsrc(struct script_state *st)
{
struct block_list* bl;
if( st->oid == 0 )
return; //Can't report source.
bl = map_id2bl(st->oid);
if( bl == NULL )
return;
switch( bl->type ) {
case BL_NPC:
if( bl->m >= 0 )
ShowDebug("Source (NPC): %s at %s (%d,%d)\n", ((struct npc_data *)bl)->name, map[bl->m].name, bl->x, bl->y);
else
ShowDebug("Source (NPC): %s (invisible/not on a map)\n", ((struct npc_data *)bl)->name);
break;
default:
if( bl->m >= 0 )
ShowDebug("Source (Non-NPC type %d): name %s at %s (%d,%d)\n", bl->type, status_get_name(bl), map[bl->m].name, bl->x, bl->y);
else
ShowDebug("Source (Non-NPC type %d): name %s (invisible/not on a map)\n", bl->type, status_get_name(bl));
break;
}
}
/// Reports on the console information about the script data.
static void script_reportdata(struct script_data* data)
{
if( data == NULL )
return;
switch( data->type ) {
case C_NOP:// no value
ShowDebug("Data: nothing (nil)\n");
break;
case C_INT:// number
ShowDebug("Data: number value=%" PRId64 "\n", data->u.num);
break;
case C_STR:
case C_CONSTSTR:// string
if( data->u.str ) {
ShowDebug("Data: string value=\"%s\"\n", data->u.str);
} else {
ShowDebug("Data: string value=NULL\n");
}
break;
case C_NAME:// reference
if( reference_tovariable(data) ) {// variable
const char* name = reference_getname(data);
ShowDebug("Data: variable name='%s' index=%d\n", name, reference_getindex(data));
} else if( reference_toconstant(data) ) {// constant
ShowDebug("Data: constant name='%s' value=%d\n", reference_getname(data), reference_getconstant(data));
} else if( reference_toparam(data) ) {// param
ShowDebug("Data: param name='%s' type=%d\n", reference_getname(data), reference_getparamtype(data));
} else {// ???
ShowDebug("Data: reference name='%s' type=%s\n", reference_getname(data), script_op2name(data->type));
ShowDebug("Please report this!!! - script->str_data.type=%s\n", script_op2name(str_data[reference_getid(data)].type));
}
break;
case C_POS:// label
ShowDebug("Data: label pos=%" PRId64 "\n", data->u.num);
break;
default:
ShowDebug("Data: %s\n", script_op2name(data->type));
break;
}
}
/// Reports on the console information about the current built-in function.
static void script_reportfunc(struct script_state* st)
{
int params, id;
struct script_data* data;
if( !script_hasdata(st,0) )
{// no stack
return;
}
data = script_getdata(st,0);
if( !data_isreference(data) || str_data[reference_getid(data)].type != C_FUNC )
{// script currently not executing a built-in function or corrupt stack
return;
}
id = reference_getid(data);
params = script_lastdata(st)-1;
if( params > 0 )
{
int i;
ShowDebug("Function: %s (%d parameter%s):\n", get_str(id), params, ( params == 1 ) ? "" : "s");
for( i = 2; i <= script_lastdata(st); i++ )
{
script_reportdata(script_getdata(st,i));
}
}
else
{
ShowDebug("Function: %s (no parameters)\n", get_str(id));
}
}
/*==========================================
* Output error message
*------------------------------------------*/
static void disp_error_message2(const char *mes,const char *pos,int report)
{
error_msg = aStrdup(mes);
error_pos = pos;
error_report = report;
longjmp( error_jump, 1 );
}
#define disp_error_message(mes,pos) disp_error_message2(mes,pos,1)
static void disp_warning_message(const char *mes, const char *pos) {
script_warning(parser_current_src,parser_current_file,parser_current_line,mes,pos);
}
/// Checks event parameter validity
static void check_event(struct script_state *st, const char *evt)
{
if( evt && evt[0] && !stristr(evt, "::On") )
{
ShowWarning("NPC event parameter deprecated! Please use 'NPCNAME::OnEVENT' instead of '%s'.\n", evt);
script_reportsrc(st);
}
}
/*==========================================
* Hashes the input string
*------------------------------------------*/
static unsigned int calc_hash(const char* p)
{
unsigned int h;
#if defined(SCRIPT_HASH_DJB2)
h = 5381;
while( *p ) // hash*33 + c
h = ( h << 5 ) + h + ((unsigned char)TOLOWER(*p++));
#elif defined(SCRIPT_HASH_SDBM)
h = 0;
while( *p ) // hash*65599 + c
h = ( h << 6 ) + ( h << 16 ) - h + ((unsigned char)TOLOWER(*p++));
#elif defined(SCRIPT_HASH_ELF) // UNIX ELF hash
h = 0;
while( *p ){
unsigned int g;
h = ( h << 4 ) + ((unsigned char)TOLOWER(*p++));
g = h & 0xF0000000;
if( g )
{
h ^= g >> 24;
h &= ~g;
}
}
#else // athena hash
h = 0;
while( *p )
h = ( h << 1 ) + ( h >> 3 ) + ( h >> 5 ) + ( h >> 8 ) + (unsigned char)TOLOWER(*p++);
#endif
return h % SCRIPT_HASH_SIZE;
}
bool script_check_RegistryVariableLength(int pType, const char *val, size_t* vlen)
{
size_t len = strlen(val);
if (vlen)
*vlen = len;
switch (pType) {
case 0:
return (len < 33); // key check
case 1:
return (len < 255); // value check
default:
return false;
}
}
/*==========================================
* str_data manipulation functions
*------------------------------------------*/
/// Looks up string using the provided id.
const char* get_str(int id)
{
Assert( id >= LABEL_START && id < str_size );
return str_buf+str_data[id].str;
}
/// Returns the uid of the string, or -1.
static int search_str(const char* p)
{
int i;
for( i = str_hash[calc_hash(p)]; i != 0; i = str_data[i].next )
if( strcasecmp(get_str(i),p) == 0 )
return i;
return -1;
}
/// Stores a copy of the string and returns its id.
/// If an identical string is already present, returns its id instead.
int add_str(const char* p)
{
int h;
int len;
h = calc_hash(p);
if( str_hash[h] == 0 )
{// empty bucket, add new node here
str_hash[h] = str_num;
}
else
{// scan for end of list, or occurence of identical string
int i;
for( i = str_hash[h]; ; i = str_data[i].next )
{
if( strcasecmp(get_str(i),p) == 0 )
return i; // string already in list
if( str_data[i].next == 0 )
break; // reached the end
}
// append node to end of list
str_data[i].next = str_num;
}
// grow list if neccessary
if( str_num >= str_data_size )
{
str_data_size += 128;
RECREATE(str_data,struct str_data_struct,str_data_size);
memset(str_data + (str_data_size - 128), '\0', 128);
}
len=(int)strlen(p);
// grow string buffer if neccessary
while( str_pos+len+1 >= str_size )
{
str_size += 256;
RECREATE(str_buf,char,str_size);
memset(str_buf + (str_size - 256), '\0', 256);
}
safestrncpy(str_buf+str_pos, p, len+1);
str_data[str_num].type = C_NOP;
str_data[str_num].str = str_pos;
str_data[str_num].next = 0;
str_data[str_num].func = NULL;
str_data[str_num].backpatch = -1;
str_data[str_num].label = -1;
str_pos += len+1;
return str_num++;
}
/// Appends 1 byte to the script buffer.
static void add_scriptb(int a)
{
if( script_pos+1 >= script_size )
{
script_size += SCRIPT_BLOCK_SIZE;
RECREATE(script_buf,unsigned char,script_size);
}
script_buf[script_pos++] = (uint8)(a);
}
/// Appends a c_op value to the script buffer.
/// The value is variable-length encoded into 8-bit blocks.
/// The encoding scheme is ( 01?????? )* 00??????, LSB first.
/// All blocks but the last hold 7 bits of data, topmost bit is always 1 (carries).
static void add_scriptc(int a)
{
while( a >= 0x40 )
{
add_scriptb((a&0x3f)|0x40);
a = (a - 0x40) >> 6;
}
add_scriptb(a);
}
/// Appends an integer value to the script buffer.
/// The value is variable-length encoded into 8-bit blocks.
/// The encoding scheme is ( 11?????? )* 10??????, LSB first.
/// All blocks but the last hold 7 bits of data, topmost bit is always 1 (carries).
static void add_scripti(int a)
{
while( a >= 0x40 )
{
add_scriptb((a&0x3f)|0xc0);
a = (a - 0x40) >> 6;
}
add_scriptb(a|0x80);
}
/// Appends a str_data object (label/function/variable/integer) to the script buffer.
///
/// @param l The id of the str_data entry
// Maximum up to 16M
static void add_scriptl(int l)
{
int backpatch = str_data[l].backpatch;
switch(str_data[l].type){
case C_POS:
case C_USERFUNC_POS:
add_scriptc(C_POS);
add_scriptb(str_data[l].label);
add_scriptb(str_data[l].label>>8);
add_scriptb(str_data[l].label>>16);
break;
case C_NOP:
case C_USERFUNC:
// Embedded data backpatch there is a possibility of label
add_scriptc(C_NAME);
str_data[l].backpatch = script_pos;
add_scriptb(backpatch);
add_scriptb(backpatch>>8);
add_scriptb(backpatch>>16);
break;
case C_INT:
add_scripti(abs(str_data[l].val));
if( str_data[l].val < 0 ) //Notice that this is negative, from jA (Rayce)
add_scriptc(C_NEG);
break;
default: // assume C_NAME
add_scriptc(C_NAME);
add_scriptb(l);
add_scriptb(l>>8);
add_scriptb(l>>16);
break;
}
}
/*==========================================
* Resolve the label
*------------------------------------------*/
void set_label(int l,int pos, const char* script_pos_cur)
{
int i;
if(str_data[l].type==C_INT || str_data[l].type==C_PARAM || str_data[l].type==C_FUNC)
{ //Prevent overwriting constants values, parameters and built-in functions [Skotlex]
disp_error_message("set_label: invalid label name",script_pos_cur);
return;
}
if(str_data[l].label!=-1){
disp_error_message("set_label: dup label ",script_pos_cur);
return;
}
str_data[l].type=(str_data[l].type == C_USERFUNC ? C_USERFUNC_POS : C_POS);
str_data[l].label=pos;
for(i=str_data[l].backpatch;i>=0 && i!=0x00ffffff;){
int next=GETVALUE(script_buf,i);
script_buf[i-1]=(str_data[l].type == C_USERFUNC ? C_USERFUNC_POS : C_POS);
SETVALUE(script_buf,i,pos);
i=next;
}
}
/// Skips spaces and/or comments.
const char* skip_space(const char* p)
{
if( p == NULL )
return NULL;
for(;;)
{
while( ISSPACE(*p) )
++p;
if( *p == '/' && p[1] == '/' )
{// line comment
while(*p && *p!='\n')
++p;
}
else if( *p == '/' && p[1] == '*' )
{// block comment
p += 2;
for(;;)
{
if( *p == '\0' ) {
disp_warning_message("script:script->skip_space: end of file while parsing block comment. expected " CL_BOLD "*/" CL_NORM, p);
return p;
}
if( *p == '*' && p[1] == '/' )
{// end of block comment
p += 2;
break;
}
++p;
}
}
else
break;
}
return p;
}
/// Skips a word.
/// A word consists of undercores and/or alphanumeric characters,
/// and valid variable prefixes/postfixes.
static const char* skip_word(const char* p)
{
// prefix
switch( *p ) {
case '@':// temporary char variable
++p; break;