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Fix for linux version of l4dtoolz

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Signed-off-by: Ivailo Spasov <ivailosp@abv.bg>
This commit is contained in:
Ivailo Spasov 2013-01-21 23:49:12 +02:00
parent 6f6564cc4d
commit 8dbe52e6f3
3 changed files with 28 additions and 16 deletions
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6
game_signature.h
View File

@ -1,5 +1,5 @@
#ifndef _INCLUDE_L4D1_SIGNATURE_LINUX_
#define _INCLUDE_L4D1_SIGNATURE_LINUX_
#ifndef _INCLUDE_GAME_SIGNATURE_
#define _INCLUDE_GAME_SIGNATURE_
#ifdef WIN32
#ifdef L4D1
@ -15,4 +15,4 @@
#endif
#endif
#endif //_INCLUDE_L4D1_SIGNATURE_LINUX_
#endif //_INCLUDE_GAME_SIGNATURE_

3
l4dtoolz_mm.cpp
View File

@ -150,6 +150,9 @@ bool l4dtoolz::Load(PluginId id, ISmmAPI *ismm, char *error, size_t maxlen, bool
find_base(matchmaking_dll, &base_addr);
if(base_addr.addr == NULL)
find_base(matchmaking_dll_alt, &base_addr);
if(!lobby_match_ptr) {
lobby_match_ptr = find_signature(lobby_match, &base_addr, 1);
get_original_signature(lobby_match_ptr, lobby_match_new, lobby_match_org);

35
signature.cpp
View File

@ -17,7 +17,7 @@
#define SIGN_OFFSET_BYTE 1
static int lock_region(const void *addr, unsigned int sign_len, int lock)
static int lock_region(const void *addr, unsigned int sign_len, unsigned int sign_off, int lock)
{
#ifndef WIN32
unsigned int all_adr;
@ -28,12 +28,13 @@ static int lock_region(const void *addr, unsigned int sign_len, int lock)
p_size = sysconf(_SC_PAGESIZE);
u_addr = (unsigned int)addr;
all_adr = (u_addr + sign_len) & ~(p_size-1);
all_adr = (u_addr + sign_off) & ~(p_size-1);
all_size = u_addr - all_adr + sign_len;
if(lock)
if(lock) {
mlock((void *)all_adr, all_size);
else
mprotect((void *)all_adr, all_size, PROT_READ|PROT_WRITE|PROT_EXEC);
} else
munlock((void *)all_adr, all_size);
#endif
return 0;
@ -48,7 +49,12 @@ void *find_signature(const char* mask, struct base_addr_t *base_addr, int pure)
if(base_addr == NULL)
return NULL;
lock_region(pBasePtr, pEndPtr-pBasePtr, 1);
#ifndef WIN32
unsigned int p_size = sysconf(_SC_PAGESIZE);
char* all_adr = (char*)((unsigned int)pBasePtr & ~(p_size-1));
unsigned int size = pEndPtr - all_adr;
mlock(all_adr, size);
#endif
while(pBasePtr < pEndPtr)
{
@ -65,14 +71,18 @@ void *find_signature(const char* mask, struct base_addr_t *base_addr, int pure)
tmp++;
}
if(i-1 == mask[0]) {
lock_region(pBasePtr, pEndPtr-pBasePtr, 0);
#ifndef WIN32
munlock(all_adr, size);
#endif
return pBasePtr;
}
pBasePtr++;
}
lock_region(pBasePtr, pEndPtr-pBasePtr, 0);
#ifndef WIN32
munlock(all_adr, size);
#endif
return NULL;
}
@ -171,14 +181,14 @@ int write_signature(const void* addr, const void* signature)
CloseHandle(h_process);
#else
lock_region(addr, sign_len, 1);
lock_region(addr, sign_len, sign_off, 1);
memcpy((void *)(u_addr+sign_off), (void *)(u_addr_sign+SIGN_HEADER_LEN), sign_len);
lock_region(addr, sign_len, 0);
lock_region(addr, sign_len, sign_off, 0);
#endif
return 1;
}
#include <ISmmPlugin.h>
int read_signature(const void *addr, void *signature)
{
unsigned int u_addr_sign;
@ -196,9 +206,9 @@ int read_signature(const void *addr, void *signature)
ReadProcessMemory(h_process, (void *)(u_addr+sign_off), (void *)(u_addr_sign+SIGN_HEADER_LEN), sign_len, NULL);
CloseHandle(h_process);
#else
lock_region(addr, sign_len, 1);
lock_region(addr, sign_len, sign_off, 1);
memcpy((void *)(u_addr_sign+SIGN_HEADER_LEN), (void *)(u_addr+sign_off), sign_len);
lock_region(addr, sign_len, 0);
lock_region(addr, sign_len, sign_off, 0);
#endif
return 0;
}
@ -212,7 +222,6 @@ int get_original_signature(const void *offset, const void *new_sig, void *&org_s
sign_len = ((unsigned char *)new_sig)[SIGN_LEN_BYTE];
org_sig = malloc(sign_len + SIGN_HEADER_LEN);
memset(org_sig, 0, sign_len + SIGN_HEADER_LEN);
memcpy(org_sig, new_sig, SIGN_HEADER_LEN);
return read_signature(offset, org_sig);
}