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advapi32: Don't use -1 as dstlen in WideCharToMultiByte.

This commit is contained in:
Detlef Riekenberg 2009-09-19 00:45:07 +02:00 committed by Alexandre Julliard
parent 2f112cf5ee
commit 224d33b2c9
1 changed files with 59 additions and 37 deletions
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96
dlls/advapi32/cred.c
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@ -918,52 +918,70 @@ static DWORD mac_delete_credential(LPCWSTR TargetName)
}
#endif
static void convert_PCREDENTIALW_to_PCREDENTIALA(const CREDENTIALW *CredentialW, PCREDENTIALA CredentialA, DWORD *len)
{
char *buffer = (char *)CredentialA + sizeof(CREDENTIALA);
INT string_len;
/******************************************************************************
* convert_PCREDENTIALW_to_PCREDENTIALA [internal]
*
* convert a Credential struct from UNICODE to ANSI and return the needed size in Bytes
*
*/
static INT convert_PCREDENTIALW_to_PCREDENTIALA(const CREDENTIALW *CredentialW, PCREDENTIALA CredentialA, INT len)
{
char *buffer;
INT string_len;
INT needed = sizeof(CREDENTIALA);
*len += sizeof(CREDENTIALA);
if (!CredentialA)
{
if (CredentialW->TargetName) *len += WideCharToMultiByte(CP_ACP, 0, CredentialW->TargetName, -1, NULL, 0, NULL, NULL);
if (CredentialW->Comment) *len += WideCharToMultiByte(CP_ACP, 0, CredentialW->Comment, -1, NULL, 0, NULL, NULL);
*len += CredentialW->CredentialBlobSize;
if (CredentialW->TargetAlias) *len += WideCharToMultiByte(CP_ACP, 0, CredentialW->TargetAlias, -1, NULL, 0, NULL, NULL);
if (CredentialW->UserName) *len += WideCharToMultiByte(CP_ACP, 0, CredentialW->UserName, -1, NULL, 0, NULL, NULL);
if (CredentialW->TargetName)
needed += WideCharToMultiByte(CP_ACP, 0, CredentialW->TargetName, -1, NULL, 0, NULL, NULL);
if (CredentialW->Comment)
needed += WideCharToMultiByte(CP_ACP, 0, CredentialW->Comment, -1, NULL, 0, NULL, NULL);
needed += CredentialW->CredentialBlobSize;
if (CredentialW->TargetAlias)
needed += WideCharToMultiByte(CP_ACP, 0, CredentialW->TargetAlias, -1, NULL, 0, NULL, NULL);
if (CredentialW->UserName)
needed += WideCharToMultiByte(CP_ACP, 0, CredentialW->UserName, -1, NULL, 0, NULL, NULL);
return;
return needed;
}
buffer = (char *)CredentialA + sizeof(CREDENTIALA);
len -= sizeof(CREDENTIALA);
CredentialA->Flags = CredentialW->Flags;
CredentialA->Type = CredentialW->Type;
if (CredentialW->TargetName)
{
CredentialA->TargetName = buffer;
string_len = WideCharToMultiByte(CP_ACP, 0, CredentialW->TargetName, -1, CredentialA->TargetName, -1, NULL, NULL);
string_len = WideCharToMultiByte(CP_ACP, 0, CredentialW->TargetName, -1, buffer, len, NULL, NULL);
buffer += string_len;
*len += string_len;
needed += string_len;
len -= string_len;
}
else
CredentialA->TargetName = NULL;
if (CredentialW->Comment)
{
CredentialA->Comment = buffer;
string_len = WideCharToMultiByte(CP_ACP, 0, CredentialW->Comment, -1, CredentialA->Comment, -1, NULL, NULL);
string_len = WideCharToMultiByte(CP_ACP, 0, CredentialW->Comment, -1, buffer, len, NULL, NULL);
buffer += string_len;
*len += string_len;
needed += string_len;
len -= string_len;
}
else
CredentialA->Comment = NULL;
CredentialA->LastWritten = CredentialW->LastWritten;
CredentialA->CredentialBlobSize = CredentialW->CredentialBlobSize;
if (CredentialW->CredentialBlobSize)
if (CredentialW->CredentialBlobSize && (CredentialW->CredentialBlobSize <= len))
{
CredentialA->CredentialBlob =(LPBYTE)buffer;
memcpy(CredentialA->CredentialBlob, CredentialW->CredentialBlob,
CredentialW->CredentialBlobSize);
buffer += CredentialW->CredentialBlobSize;
*len += CredentialW->CredentialBlobSize;
needed += CredentialW->CredentialBlobSize;
len -= CredentialW->CredentialBlobSize;
}
else
CredentialA->CredentialBlob = NULL;
@ -973,21 +991,23 @@ static void convert_PCREDENTIALW_to_PCREDENTIALA(const CREDENTIALW *CredentialW,
if (CredentialW->TargetAlias)
{
CredentialA->TargetAlias = buffer;
string_len = WideCharToMultiByte(CP_ACP, 0, CredentialW->TargetAlias, -1, CredentialA->TargetAlias, -1, NULL, NULL);
string_len = WideCharToMultiByte(CP_ACP, 0, CredentialW->TargetAlias, -1, buffer, len, NULL, NULL);
buffer += string_len;
*len += string_len;
needed += string_len;
len -= string_len;
}
else
CredentialA->TargetAlias = NULL;
if (CredentialW->UserName)
{
CredentialA->UserName = buffer;
string_len = WideCharToMultiByte(CP_ACP, 0, CredentialW->UserName, -1, CredentialA->UserName, -1, NULL, NULL);
buffer += string_len;
*len += string_len;
string_len = WideCharToMultiByte(CP_ACP, 0, CredentialW->UserName, -1, buffer, len, NULL, NULL);
needed += string_len;
}
else
CredentialA->UserName = NULL;
return needed;
}
static void convert_PCREDENTIALA_to_PCREDENTIALW(const CREDENTIALA *CredentialA, PCREDENTIALW CredentialW, DWORD *len)
@ -1165,7 +1185,8 @@ BOOL WINAPI CredEnumerateA(LPCSTR Filter, DWORD Flags, DWORD *Count,
LPWSTR FilterW;
PCREDENTIALW *CredentialsW;
DWORD i;
DWORD len;
INT len;
INT needed;
char *buffer;
TRACE("(%s, 0x%x, %p, %p)\n", debugstr_a(Filter), Flags, Count, Credentials);
@ -1193,7 +1214,7 @@ BOOL WINAPI CredEnumerateA(LPCSTR Filter, DWORD Flags, DWORD *Count,
len = *Count * sizeof(PCREDENTIALA);
for (i = 0; i < *Count; i++)
convert_PCREDENTIALW_to_PCREDENTIALA(CredentialsW[i], NULL, &len);
len += convert_PCREDENTIALW_to_PCREDENTIALA(CredentialsW[i], NULL, 0);
*Credentials = HeapAlloc(GetProcessHeap(), 0, len);
if (!*Credentials)
@ -1204,12 +1225,13 @@ BOOL WINAPI CredEnumerateA(LPCSTR Filter, DWORD Flags, DWORD *Count,
}
buffer = (char *)&(*Credentials)[*Count];
len -= *Count * sizeof(PCREDENTIALA);
for (i = 0; i < *Count; i++)
{
len = 0;
(*Credentials)[i] = (PCREDENTIALA)buffer;
convert_PCREDENTIALW_to_PCREDENTIALA(CredentialsW[i], (*Credentials)[i], &len);
buffer += len;
needed = convert_PCREDENTIALW_to_PCREDENTIALA(CredentialsW[i], (*Credentials)[i], len);
buffer += needed;
len -= needed;
}
CredFree(CredentialsW);
@ -1338,7 +1360,7 @@ BOOL WINAPI CredReadA(LPCSTR TargetName, DWORD Type, DWORD Flags, PCREDENTIALA *
{
LPWSTR TargetNameW;
PCREDENTIALW CredentialW;
DWORD len;
INT len;
TRACE("(%s, %d, 0x%x, %p)\n", debugstr_a(TargetName), Type, Flags, Credential);
@ -1364,16 +1386,14 @@ BOOL WINAPI CredReadA(LPCSTR TargetName, DWORD Type, DWORD Flags, PCREDENTIALA *
}
HeapFree(GetProcessHeap(), 0, TargetNameW);
len = 0;
convert_PCREDENTIALW_to_PCREDENTIALA(CredentialW, NULL, &len);
len = convert_PCREDENTIALW_to_PCREDENTIALA(CredentialW, NULL, 0);
*Credential = HeapAlloc(GetProcessHeap(), 0, len);
if (!*Credential)
{
SetLastError(ERROR_OUTOFMEMORY);
return FALSE;
}
len = 0;
convert_PCREDENTIALW_to_PCREDENTIALA(CredentialW, *Credential, &len);
convert_PCREDENTIALW_to_PCREDENTIALA(CredentialW, *Credential, len);
CredFree(CredentialW);
@ -1545,7 +1565,7 @@ BOOL WINAPI CredReadDomainCredentialsA(PCREDENTIAL_TARGET_INFORMATIONA TargetInf
DWORD Flags, DWORD *Size, PCREDENTIALA **Credentials)
{
PCREDENTIAL_TARGET_INFORMATIONW TargetInformationW;
DWORD len, i;
INT len, i;
WCHAR *buffer, *end;
BOOL ret;
PCREDENTIALW* CredentialsW;
@ -1654,10 +1674,11 @@ BOOL WINAPI CredReadDomainCredentialsA(PCREDENTIAL_TARGET_INFORMATIONA TargetInf
if (ret)
{
char *buf;
INT needed;
len = *Size * sizeof(PCREDENTIALA);
for (i = 0; i < *Size; i++)
convert_PCREDENTIALW_to_PCREDENTIALA(CredentialsW[i], NULL, &len);
len += convert_PCREDENTIALW_to_PCREDENTIALA(CredentialsW[i], NULL, 0);
*Credentials = HeapAlloc(GetProcessHeap(), 0, len);
if (!*Credentials)
@ -1668,12 +1689,13 @@ BOOL WINAPI CredReadDomainCredentialsA(PCREDENTIAL_TARGET_INFORMATIONA TargetInf
}
buf = (char *)&(*Credentials)[*Size];
len -= *Size * sizeof(PCREDENTIALA);
for (i = 0; i < *Size; i++)
{
len = 0;
(*Credentials)[i] = (PCREDENTIALA)buf;
convert_PCREDENTIALW_to_PCREDENTIALA(CredentialsW[i], (*Credentials)[i], &len);
buf += len;
needed = convert_PCREDENTIALW_to_PCREDENTIALA(CredentialsW[i], (*Credentials)[i], len);
buf += needed;
len -= needed;
}
CredFree(CredentialsW);