OpenPunk/citra
1
0
Fork 0
mirror of https://github.com/citra-emu/citra.git synced 2024-11-25 16:30:15 +00:00
Code Issues Projects Releases Wiki Activity

LDR fixup VerifyStringLength

Browse Source
This commit is contained in:
wwylele 2016-08-19 21:11:00 +08:00
parent 3e400a517b
commit 3e34b8c71f
1 changed files with 10 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
src/core/hle/service/ldr_ro.cpp
View File

@ -630,12 +630,15 @@ class CROHelper final {
}
/**
* Verifies a string matching a predicted size (i.e. terminated by 0) if it is not empty
* @param address the virtual address of the string
* @param size the size of the string, including the terminating 0
* Verifies a string or a string table matching a predicted size (i.e. terminated by 0)
* if it is not empty. There can be many other nulls in the string table because
* they are composed by many sub strings. This function is to check whether the
* whole string (table) is terminated properly, despite that it is not actually one string.
* @param address the virtual address of the string (table)
* @param size the size of the string (table), including the terminating 0
* @returns ResultCode RESULT_SUCCESS if the size matches, otherwise error code.
*/
static ResultCode VerifyStringLength(VAddr address, u32 size) {
static ResultCode VerifyStringTableLength(VAddr address, u32 size) {
if (size != 0) {
if (Memory::Read8(address + size - 1) != 0)
return CROFormatError(0x0B);
@ -1576,7 +1579,7 @@ public:
return result;
}
result = VerifyStringLength(GetField(ModuleNameOffset), GetField(ModuleNameSize));
result = VerifyStringTableLength(GetField(ModuleNameOffset), GetField(ModuleNameSize));
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error verifying module name %08X", result.raw);
return result;
@ -1606,7 +1609,7 @@ public:
return result;
}
result = VerifyStringLength(GetField(ExportStringsOffset), GetField(ExportStringsSize));
result = VerifyStringTableLength(GetField(ExportStringsOffset), GetField(ExportStringsSize));
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error verifying export strings %08X", result.raw);
return result;
@ -1642,7 +1645,7 @@ public:
return result;
}
result = VerifyStringLength(GetField(ImportStringsOffset), GetField(ImportStringsSize));
result = VerifyStringTableLength(GetField(ImportStringsOffset), GetField(ImportStringsSize));
if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error verifying import strings %08X", result.raw);
return result;