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Commit 4cd377d4 authored by Mike McCormack's avatar Mike McCormack Committed by Alexandre Julliard
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secur32: Cleanup InitializeSecurityContext (reduce indent and duplication).

parent d243b39c
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Showing with 192 additions and 270 deletions
dlls/secur32/ntlm.c
View file @ 4cd377d4
......@@ -395,312 +395,234 @@ static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
{
SECURITY_STATUS ret;
PNegoHelper helper;
ULONG ctxt_attr = 0;
char* buffer;
PBYTE bin;
int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
TRACE("%p %p %s %ld %ld %ld %p %ld %p %p %p %p\n", phCredential, phContext,
debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
if(phCredential){
/* As the server side of sspi never calls this, make sure that
* the handler is a client handler.
*/
PNegoHelper helper = (PNegoHelper)phCredential->dwLower;
ULONG ctxt_attr = 0;
if(helper->mode == NTLM_CLIENT)
{
/****************************************
* When communicating with the client, there can be the
* following reply packets:
* YR <base64 blob> should be sent to the server
* PW should be sent back to helper with
* base64 encoded password
* AF <base64 blob> client is done, blob should be
* sent to server with KK prefixed
* BH <char reason> something broke
*/
BOOL first = FALSE;
/* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
char* buffer = HeapAlloc(GetProcessHeap(), 0,
sizeof(char) * NTLM_MAX_BUF);
PBYTE bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) *
NTLM_MAX_BUF);
int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
if((phContext == NULL) && (pInput == NULL))
first = TRUE;
if (pszTargetName)
{
TRACE("According to a MS whitepaper pszTargetName is ignored.\n");
}
/* Handle all the flags */
if(fContextReq & ISC_REQ_CONFIDENTIALITY)
{
FIXME("InitializeSecurityContext(): ISC_REQ_CONFIDENTIALITY stub\n");
}
if(fContextReq & ISC_REQ_CONNECTION)
{
/* This is default, so we'll enable it */
ctxt_attr |= ISC_RET_CONNECTION;
}
if(fContextReq & ISC_REQ_EXTENDED_ERROR)
{
FIXME("InitializeSecurityContext(): ISC_REQ_EXTENDED_ERROR stub\n");
}
if(fContextReq & ISC_REQ_INTEGRITY)
{
FIXME("InitializeSecurityContext(): ISC_REQ_INTEGRITY stub\n");
}
if(fContextReq & ISC_REQ_MUTUAL_AUTH)
{
FIXME("InitializeSecurityContext(): ISC_REQ_MUTUAL_AUTH stub\n");
}
if(fContextReq & ISC_REQ_REPLAY_DETECT)
{
FIXME("InitializeSecurityContext(): ISC_REQ_REPLAY_DETECT stub\n");
}
if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
{
FIXME("InitializeSecurityContext(): ISC_REQ_SEQUENCE_DETECT stub\n");
}
if(fContextReq & ISC_REQ_STREAM)
{
FIXME("InitializeSecurityContext(): ISC_REQ_STREAM stub\n");
}
/* Done with the flags */
if(TargetDataRep == SECURITY_NETWORK_DREP){
FIXME("Don't know how to do SECURITY_NETWORK_DREP\n");
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_UNSUPPORTED_FUNCTION;
}
if(!phCredential)
return SEC_E_INVALID_HANDLE;
if(first)
{
TRACE("First time in ISC()\n");
/* Request a challenge request from ntlm_auth */
if(helper->password == NULL)
{
FIXME("Using empty password for now.\n");
lstrcpynA(buffer, "PW AA==", max_len-1);
}
else
{
lstrcpynA(buffer, "PW ", max_len-1);
if((ret = encodeBase64((unsigned char*)helper->password,
helper->pwlen-2, buffer+3,
max_len-3, &buffer_len)) != SEC_E_OK)
{
TRACE("Deleting password!\n");
memset(helper->password, 0, helper->pwlen-2);
HeapFree(GetProcessHeap(), 0, helper->password);
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
}
/* As the server side of sspi never calls this, make sure that
* the handler is a client handler.
*/
helper = (PNegoHelper)phCredential->dwLower;
if(helper->mode != NTLM_CLIENT)
{
TRACE("Helper mode = %d\n", helper->mode);
return SEC_E_INVALID_HANDLE;
}
TRACE("Sending to helper: %s\n", debugstr_a(buffer));
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
SEC_E_OK)
{
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
TRACE("Helper returned %s\n", debugstr_a(buffer));
lstrcpynA(buffer, "YR", max_len-1);
/****************************************
* When communicating with the client, there can be the
* following reply packets:
* YR <base64 blob> should be sent to the server
* PW should be sent back to helper with
* base64 encoded password
* AF <base64 blob> client is done, blob should be
* sent to server with KK prefixed
* BH <char reason> something broke
*/
/* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
SEC_E_OK)
{
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
if (pszTargetName)
{
TRACE("According to a MS whitepaper pszTargetName is ignored.\n");
}
/* Handle all the flags */
if(fContextReq & ISC_REQ_CONFIDENTIALITY)
{
FIXME("InitializeSecurityContext(): ISC_REQ_CONFIDENTIALITY stub\n");
}
if(fContextReq & ISC_REQ_CONNECTION)
{
/* This is default, so we'll enable it */
ctxt_attr |= ISC_RET_CONNECTION;
}
if(fContextReq & ISC_REQ_EXTENDED_ERROR)
FIXME("ISC_REQ_EXTENDED_ERROR\n");
if(fContextReq & ISC_REQ_INTEGRITY)
FIXME("ISC_REQ_INTEGRITY\n");
if(fContextReq & ISC_REQ_MUTUAL_AUTH)
FIXME("ISC_REQ_MUTUAL_AUTH\n");
if(fContextReq & ISC_REQ_REPLAY_DETECT)
FIXME("ISC_REQ_REPLAY_DETECT\n");
if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
FIXME("ISC_REQ_SEQUENCE_DETECT\n");
if(fContextReq & ISC_REQ_STREAM)
FIXME("ISC_REQ_STREAM\n");
/* Done with the flags */
if(TargetDataRep == SECURITY_NETWORK_DREP){
FIXME("Don't know how to do SECURITY_NETWORK_DREP\n");
return SEC_E_UNSUPPORTED_FUNCTION;
}
TRACE("%s\n", buffer);
if(strncmp(buffer, "YR ", 3) != 0)
{
/* Something borked */
TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_INTERNAL_ERROR;
}
if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
max_len-1, &bin_len)) != SEC_E_OK)
{
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
/* put the decoded client blob into the out buffer */
if((phContext == NULL) && (pInput == NULL))
{
TRACE("First time in ISC()\n");
/* Request a challenge request from ntlm_auth */
if(helper->password == NULL)
{
FIXME("Using empty password for now.\n");
lstrcpynA(buffer, "PW AA==", max_len-1);
}
else
{
lstrcpynA(buffer, "PW ", max_len-1);
if((ret = encodeBase64((unsigned char*)helper->password,
helper->pwlen-2, buffer+3,
max_len-3, &buffer_len)) != SEC_E_OK)
{
TRACE("Deleting password!\n");
memset(helper->password, 0, helper->pwlen-2);
HeapFree(GetProcessHeap(), 0, helper->password);
goto end;
}
if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
{
if (pOutput)
{
pOutput->cBuffers = 1;
pOutput->pBuffers[0].pvBuffer = SECUR32_ALLOC(bin_len);
pOutput->pBuffers[0].cbBuffer = bin_len;
}
}
}
if (!pOutput || !pOutput->cBuffers || pOutput->pBuffers[0].cbBuffer < bin_len)
{
TRACE("out buffer is NULL or has not enough space\n");
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_BUFFER_TOO_SMALL;
}
TRACE("Sending to helper: %s\n", debugstr_a(buffer));
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
goto end;
if (!pOutput->pBuffers[0].pvBuffer)
{
TRACE("out buffer is NULL\n");
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_INTERNAL_ERROR;
}
TRACE("Helper returned %s\n", debugstr_a(buffer));
lstrcpynA(buffer, "YR", max_len-1);
pOutput->pBuffers[0].cbBuffer = bin_len;
pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
ret = SEC_I_CONTINUE_NEEDED;
}
else
{
/* handle second call here */
/* encode server data to base64 */
if (!pInput || !pInput->cBuffers)
{
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_INCOMPLETE_MESSAGE;
}
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
goto end;
if (!pInput->pBuffers[0].pvBuffer)
{
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_INTERNAL_ERROR;
}
TRACE("%s\n", buffer);
if(pInput->pBuffers[0].cbBuffer > max_len)
{
TRACE("pInput->pBuffers[0].cbBuffer is: %ld\n",
pInput->pBuffers[0].cbBuffer);
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_INVALID_TOKEN;
}
else
bin_len = pInput->pBuffers[0].cbBuffer;
if(strncmp(buffer, "YR ", 3) != 0)
{
/* Something borked */
TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
ret = SEC_E_INTERNAL_ERROR;
goto end;
}
if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
max_len-1, &bin_len)) != SEC_E_OK)
goto end;
memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
/* put the decoded client blob into the out buffer */
lstrcpynA(buffer, "TT ", max_len-1);
ret = SEC_I_CONTINUE_NEEDED;
}
else
{
/* handle second call here */
/* encode server data to base64 */
if (!pInput || !pInput->cBuffers)
{
ret = SEC_E_INCOMPLETE_MESSAGE;
goto end;
}
if((ret = encodeBase64(bin, bin_len, buffer+3,
max_len-3, &buffer_len)) != SEC_E_OK)
{
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
if (!pInput->pBuffers[0].pvBuffer)
{
ret = SEC_E_INTERNAL_ERROR;
goto end;
}
TRACE("Server sent: %s\n", debugstr_a(buffer));
if(pInput->pBuffers[0].cbBuffer > max_len)
{
TRACE("pInput->pBuffers[0].cbBuffer is: %ld\n",
pInput->pBuffers[0].cbBuffer);
ret = SEC_E_INVALID_TOKEN;
goto end;
}
else
bin_len = pInput->pBuffers[0].cbBuffer;
/* send TT base64 blob to ntlm_auth */
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
SEC_E_OK)
{
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
TRACE("Helper replied: %s\n", debugstr_a(buffer));
if( (strncmp(buffer, "KK ", 3) != 0) &&
(strncmp(buffer, "AF ", 3) !=0))
{
TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_INVALID_TOKEN;
}
memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
/* decode the blob and send it to server */
if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
&bin_len)) != SEC_E_OK)
{
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
lstrcpynA(buffer, "TT ", max_len-1);
/* put the decoded client blob into the out buffer */
if((ret = encodeBase64(bin, bin_len, buffer+3,
max_len-3, &buffer_len)) != SEC_E_OK)
goto end;
if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
{
if (pOutput)
{
pOutput->cBuffers = 1;
pOutput->pBuffers[0].pvBuffer = SECUR32_ALLOC(bin_len);
pOutput->pBuffers[0].cbBuffer = bin_len;
}
}
TRACE("Server sent: %s\n", debugstr_a(buffer));
if (!pOutput || !pOutput->cBuffers || pOutput->pBuffers[0].cbBuffer < bin_len)
{
TRACE("out buffer is NULL or has not enough space\n");
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_BUFFER_TOO_SMALL;
}
/* send TT base64 blob to ntlm_auth */
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
goto end;
if (!pOutput->pBuffers[0].pvBuffer)
{
TRACE("out buffer is NULL\n");
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return SEC_E_INTERNAL_ERROR;
}
TRACE("Helper replied: %s\n", debugstr_a(buffer));
pOutput->pBuffers[0].cbBuffer = bin_len;
pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
ret = SEC_E_OK;
phNewContext->dwUpper = ctxt_attr;
phNewContext->dwLower = ret;
}
if( (strncmp(buffer, "KK ", 3) != 0) &&
(strncmp(buffer, "AF ", 3) !=0))
{
TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
if(ret != SEC_I_CONTINUE_NEEDED)
{
TRACE("Deleting password!\n");
if(helper->password)
memset(helper->password, 0, helper->pwlen-2);
HeapFree(GetProcessHeap(), 0, helper->password);
}
return SEC_E_INVALID_TOKEN;
}
/* decode the blob and send it to server */
if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
&bin_len)) != SEC_E_OK)
{
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
else
phNewContext->dwUpper = ctxt_attr;
phNewContext->dwLower = ret;
ret = SEC_E_OK;
}
/* put the decoded client blob into the out buffer */
if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
{
if (pOutput)
{
ret = SEC_E_INVALID_HANDLE;
TRACE("Helper mode = %d\n", helper->mode);
pOutput->cBuffers = 1;
pOutput->pBuffers[0].pvBuffer = SECUR32_ALLOC(bin_len);
pOutput->pBuffers[0].cbBuffer = bin_len;
}
}
else
if (!pOutput || !pOutput->cBuffers || pOutput->pBuffers[0].cbBuffer < bin_len)
{
ret = SEC_E_INVALID_HANDLE;
TRACE("out buffer is NULL or has not enough space\n");
ret = SEC_E_BUFFER_TOO_SMALL;
goto end;
}
if (!pOutput->pBuffers[0].pvBuffer)
{
TRACE("out buffer is NULL\n");
ret = SEC_E_INTERNAL_ERROR;
goto end;
}
pOutput->pBuffers[0].cbBuffer = bin_len;
pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
if(ret != SEC_I_CONTINUE_NEEDED)
{
TRACE("Deleting password!\n");
if(helper->password)
memset(helper->password, 0, helper->pwlen-2);
HeapFree(GetProcessHeap(), 0, helper->password);
}
end:
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
......
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