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LDR fixup VerifyStringLength

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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
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17
src/core/hle/service/ldr_ro.cpp
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@ -630,12 +630,15 @@ class CROHelper final {
} }
/** /**
* Verifies a string matching a predicted size (i.e. terminated by 0) if it is not empty * Verifies a string or a string table matching a predicted size (i.e. terminated by 0)
* @param address the virtual address of the string * if it is not empty. There can be many other nulls in the string table because
* @param size the size of the string, including the terminating 0 * 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. * @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 (size != 0) {
if (Memory::Read8(address + size - 1) != 0) if (Memory::Read8(address + size - 1) != 0)
return CROFormatError(0x0B); return CROFormatError(0x0B);
@ -1576,7 +1579,7 @@ public:
return result; return result;
} }
result = VerifyStringLength(GetField(ModuleNameOffset), GetField(ModuleNameSize)); result = VerifyStringTableLength(GetField(ModuleNameOffset), GetField(ModuleNameSize));
if (result.IsError()) { if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error verifying module name %08X", result.raw); LOG_ERROR(Service_LDR, "Error verifying module name %08X", result.raw);
return result; return result;
@ -1606,7 +1609,7 @@ public:
return result; return result;
} }
result = VerifyStringLength(GetField(ExportStringsOffset), GetField(ExportStringsSize)); result = VerifyStringTableLength(GetField(ExportStringsOffset), GetField(ExportStringsSize));
if (result.IsError()) { if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error verifying export strings %08X", result.raw); LOG_ERROR(Service_LDR, "Error verifying export strings %08X", result.raw);
return result; return result;
@ -1642,7 +1645,7 @@ public:
return result; return result;
} }
result = VerifyStringLength(GetField(ImportStringsOffset), GetField(ImportStringsSize)); result = VerifyStringTableLength(GetField(ImportStringsOffset), GetField(ImportStringsSize));
if (result.IsError()) { if (result.IsError()) {
LOG_ERROR(Service_LDR, "Error verifying import strings %08X", result.raw); LOG_ERROR(Service_LDR, "Error verifying import strings %08X", result.raw);
return result; return result;