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Added a new value to AllowUnsafeScripting

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* for disabling the memory address check in write_xxx unsafe functions.
This commit is contained in:
NovaRain
2020-03-17 13:39:05 +08:00
parent 0ba3b62eff
commit aab04764ae
3 changed files with 17 additions and 1 deletions
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artifacts/ddraw.ini
+1
View File
@@ -770,6 +770,7 @@ SkipSizeCheck=0
DontDeleteProtos=0
;Set to 1 to give scripts direct access to Fallout's address space, and to make arbitrary calls into Fallout's code
;Set to 2 to also disable the memory address check in unsafe script functions
;Does not require sfall debugging mode
AllowUnsafeScripting=0
sfall/ScriptExtender.cpp
+2 -1
View File
@@ -1791,7 +1791,8 @@ void ScriptExtenderInit() {
SetExtraKillCounter(UsingExtraKillTypes());
if (iniGetInt("Debugging", "AllowUnsafeScripting", 0, ddrawIniDef)) {
if (int unsafe = iniGetInt("Debugging", "AllowUnsafeScripting", 0, ddrawIniDef)) {
if (unsafe == 2) checkValidMemAddr = false;
dlogr(" Unsafe opcodes enabled.", DL_SCRIPT);
opcodes[0x1cf] = WriteByte;
opcodes[0x1d0] = WriteShort;
sfall/ScriptOps/MemoryOps.hpp
+14
View File
@@ -24,6 +24,8 @@
#define START_VALID_ADDR 0x410000
#define END_VALID_ADDR 0x6B403F
bool checkValidMemAddr = true;
// memory_reading_funcs
static void __declspec(naked) ReadByte() {
__asm {
@@ -102,10 +104,13 @@ static void __declspec(naked) WriteByte() {
cmp cx, VAR_TYPE_INT;
jnz end;
// check valid addr
cmp checkValidMemAddr, 0;
jz noCheck;
cmp eax, START_VALID_ADDR;
jb end;
cmp eax, END_VALID_ADDR;
ja end;
noCheck:
and esi, 0xFF;
push esi;
push eax;
@@ -129,10 +134,13 @@ static void __declspec(naked) WriteShort() {
cmp cx, VAR_TYPE_INT;
jnz end;
// check valid addr
cmp checkValidMemAddr, 0;
jz noCheck;
cmp eax, START_VALID_ADDR;
jb end;
cmp eax, END_VALID_ADDR;
ja end;
noCheck:
and esi, 0xFFFF;
push esi;
push eax;
@@ -156,10 +164,13 @@ static void __declspec(naked) WriteInt() {
cmp cx, VAR_TYPE_INT;
jnz end;
// check valid addr
cmp checkValidMemAddr, 0;
jz noCheck;
cmp eax, START_VALID_ADDR;
jb end;
cmp eax, END_VALID_ADDR;
ja end;
noCheck:
push esi;
push eax;
call SafeWrite32;
@@ -196,10 +207,13 @@ next:
// ecx - type, esi - value
// edx - type, eax - addr
// check valid address
cmp checkValidMemAddr, 0;
jz noCheck;
cmp eax, START_VALID_ADDR;
jb end;
cmp eax, END_VALID_ADDR;
ja end;
noCheck:
push ebx; // script
push esi; // str value
mov edx, ecx; // type