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schannel: re-indented file to follow curl style better 

white space changes only
This commit is contained in:
Daniel Stenberg 2015-04-26 17:40:40 +02:00
parent cae43a10cb
commit 3447c973d0
1 changed files with 95 additions and 90 deletions
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185
lib/vtls/schannel.c
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@ -125,56 +125,56 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
/* certificate validation on CE doesn't seem to work right; we'll /* certificate validation on CE doesn't seem to work right; we'll
do it following a more manual process. */ do it following a more manual process. */
schannel_cred.dwFlags = SCH_CRED_MANUAL_CRED_VALIDATION | schannel_cred.dwFlags = SCH_CRED_MANUAL_CRED_VALIDATION |
SCH_CRED_IGNORE_NO_REVOCATION_CHECK | SCH_CRED_IGNORE_NO_REVOCATION_CHECK |
SCH_CRED_IGNORE_REVOCATION_OFFLINE; SCH_CRED_IGNORE_REVOCATION_OFFLINE;
#else #else
schannel_cred.dwFlags = SCH_CRED_AUTO_CRED_VALIDATION | schannel_cred.dwFlags = SCH_CRED_AUTO_CRED_VALIDATION |
SCH_CRED_REVOCATION_CHECK_CHAIN; SCH_CRED_REVOCATION_CHECK_CHAIN;
#endif #endif
infof(data, "schannel: checking server certificate revocation\n"); infof(data, "schannel: checking server certificate revocation\n");
} }
else { else {
schannel_cred.dwFlags = SCH_CRED_MANUAL_CRED_VALIDATION | schannel_cred.dwFlags = SCH_CRED_MANUAL_CRED_VALIDATION |
SCH_CRED_IGNORE_NO_REVOCATION_CHECK | SCH_CRED_IGNORE_NO_REVOCATION_CHECK |
SCH_CRED_IGNORE_REVOCATION_OFFLINE; SCH_CRED_IGNORE_REVOCATION_OFFLINE;
infof(data, "schannel: disable server certificate revocation checks\n"); infof(data, "schannel: disable server certificate revocation checks\n");
} }
if(!data->set.ssl.verifyhost) { if(!data->set.ssl.verifyhost) {
schannel_cred.dwFlags |= SCH_CRED_NO_SERVERNAME_CHECK; schannel_cred.dwFlags |= SCH_CRED_NO_SERVERNAME_CHECK;
infof(data, "schannel: verifyhost setting prevents Schannel from " infof(data, "schannel: verifyhost setting prevents Schannel from "
"comparing the supplied target name with the subject " "comparing the supplied target name with the subject "
"names in server certificates. Also disables SNI.\n"); "names in server certificates. Also disables SNI.\n");
} }
switch(data->set.ssl.version) { switch(data->set.ssl.version) {
default: default:
case CURL_SSLVERSION_DEFAULT: case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1: case CURL_SSLVERSION_TLSv1:
schannel_cred.grbitEnabledProtocols = SP_PROT_TLS1_0_CLIENT | schannel_cred.grbitEnabledProtocols = SP_PROT_TLS1_0_CLIENT |
SP_PROT_TLS1_1_CLIENT | SP_PROT_TLS1_1_CLIENT |
SP_PROT_TLS1_2_CLIENT; SP_PROT_TLS1_2_CLIENT;
break; break;
case CURL_SSLVERSION_TLSv1_0: case CURL_SSLVERSION_TLSv1_0:
schannel_cred.grbitEnabledProtocols = SP_PROT_TLS1_0_CLIENT; schannel_cred.grbitEnabledProtocols = SP_PROT_TLS1_0_CLIENT;
break; break;
case CURL_SSLVERSION_TLSv1_1: case CURL_SSLVERSION_TLSv1_1:
schannel_cred.grbitEnabledProtocols = SP_PROT_TLS1_1_CLIENT; schannel_cred.grbitEnabledProtocols = SP_PROT_TLS1_1_CLIENT;
break; break;
case CURL_SSLVERSION_TLSv1_2: case CURL_SSLVERSION_TLSv1_2:
schannel_cred.grbitEnabledProtocols = SP_PROT_TLS1_2_CLIENT; schannel_cred.grbitEnabledProtocols = SP_PROT_TLS1_2_CLIENT;
break; break;
case CURL_SSLVERSION_SSLv3: case CURL_SSLVERSION_SSLv3:
schannel_cred.grbitEnabledProtocols = SP_PROT_SSL3_CLIENT; schannel_cred.grbitEnabledProtocols = SP_PROT_SSL3_CLIENT;
break; break;
case CURL_SSLVERSION_SSLv2: case CURL_SSLVERSION_SSLv2:
schannel_cred.grbitEnabledProtocols = SP_PROT_SSL2_CLIENT; schannel_cred.grbitEnabledProtocols = SP_PROT_SSL2_CLIENT;
break; break;
} }
/* allocate memory for the re-usable credential handle */ /* allocate memory for the re-usable credential handle */
connssl->cred = (struct curl_schannel_cred *) connssl->cred = (struct curl_schannel_cred *)
malloc(sizeof(struct curl_schannel_cred)); malloc(sizeof(struct curl_schannel_cred));
if(!connssl->cred) { if(!connssl->cred) {
failf(data, "schannel: unable to allocate memory"); failf(data, "schannel: unable to allocate memory");
return CURLE_OUT_OF_MEMORY; return CURLE_OUT_OF_MEMORY;
@ -182,9 +182,12 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
memset(connssl->cred, 0, sizeof(struct curl_schannel_cred)); memset(connssl->cred, 0, sizeof(struct curl_schannel_cred));
/* http://msdn.microsoft.com/en-us/library/windows/desktop/aa374716.aspx */ /* http://msdn.microsoft.com/en-us/library/windows/desktop/aa374716.aspx */
sspi_status = s_pSecFn->AcquireCredentialsHandle(NULL, (TCHAR *)UNISP_NAME, sspi_status =
SECPKG_CRED_OUTBOUND, NULL, &schannel_cred, NULL, NULL, s_pSecFn->AcquireCredentialsHandle(NULL, (TCHAR *)UNISP_NAME,
&connssl->cred->cred_handle, &connssl->cred->time_stamp); SECPKG_CRED_OUTBOUND, NULL,
&schannel_cred, NULL, NULL,
&connssl->cred->cred_handle,
&connssl->cred->time_stamp);
if(sspi_status != SEC_E_OK) { if(sspi_status != SEC_E_OK) {
if(sspi_status == SEC_E_WRONG_PRINCIPAL) if(sspi_status == SEC_E_WRONG_PRINCIPAL)
@ -213,12 +216,12 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
/* setup request flags */ /* setup request flags */
connssl->req_flags = ISC_REQ_SEQUENCE_DETECT | ISC_REQ_REPLAY_DETECT | connssl->req_flags = ISC_REQ_SEQUENCE_DETECT | ISC_REQ_REPLAY_DETECT |
ISC_REQ_CONFIDENTIALITY | ISC_REQ_ALLOCATE_MEMORY | ISC_REQ_CONFIDENTIALITY | ISC_REQ_ALLOCATE_MEMORY |
ISC_REQ_STREAM; ISC_REQ_STREAM;
/* allocate memory for the security context handle */ /* allocate memory for the security context handle */
connssl->ctxt = (struct curl_schannel_ctxt *) connssl->ctxt = (struct curl_schannel_ctxt *)
malloc(sizeof(struct curl_schannel_ctxt)); malloc(sizeof(struct curl_schannel_ctxt));
if(!connssl->ctxt) { if(!connssl->ctxt) {
failf(data, "schannel: unable to allocate memory"); failf(data, "schannel: unable to allocate memory");
return CURLE_OUT_OF_MEMORY; return CURLE_OUT_OF_MEMORY;
@ -313,7 +316,7 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
CURL_SCHANNEL_BUFFER_FREE_SIZE) { CURL_SCHANNEL_BUFFER_FREE_SIZE) {
/* increase internal encrypted data buffer */ /* increase internal encrypted data buffer */
reallocated_length = connssl->encdata_offset + reallocated_length = connssl->encdata_offset +
CURL_SCHANNEL_BUFFER_FREE_SIZE; CURL_SCHANNEL_BUFFER_FREE_SIZE;
reallocated_buffer = realloc(connssl->encdata_buffer, reallocated_buffer = realloc(connssl->encdata_buffer,
reallocated_length); reallocated_length);
@ -354,7 +357,7 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
} }
infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n", infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n",
connssl->encdata_offset, connssl->encdata_length); connssl->encdata_offset, connssl->encdata_length);
/* setup input buffers */ /* setup input buffers */
InitSecBuffer(&inbuf[0], SECBUFFER_TOKEN, malloc(connssl->encdata_offset), InitSecBuffer(&inbuf[0], SECBUFFER_TOKEN, malloc(connssl->encdata_offset),
@ -439,21 +442,21 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
if(inbuf[1].BufferType == SECBUFFER_EXTRA && inbuf[1].cbBuffer > 0) { if(inbuf[1].BufferType == SECBUFFER_EXTRA && inbuf[1].cbBuffer > 0) {
infof(data, "schannel: encrypted data length: %lu\n", inbuf[1].cbBuffer); infof(data, "schannel: encrypted data length: %lu\n", inbuf[1].cbBuffer);
/* /*
There are two cases where we could be getting extra data here: There are two cases where we could be getting extra data here:
1) If we're renegotiating a connection and the handshake is already 1) If we're renegotiating a connection and the handshake is already
complete (from the server perspective), it can encrypted app data complete (from the server perspective), it can encrypted app data
(not handshake data) in an extra buffer at this point. (not handshake data) in an extra buffer at this point.
2) (sspi_status == SEC_I_CONTINUE_NEEDED) We are negotiating a 2) (sspi_status == SEC_I_CONTINUE_NEEDED) We are negotiating a
connection and this extra data is part of the handshake. connection and this extra data is part of the handshake.
We should process the data immediately; waiting for the socket to We should process the data immediately; waiting for the socket to
be ready may fail since the server is done sending handshake data. be ready may fail since the server is done sending handshake data.
*/ */
/* check if the remaining data is less than the total amount /* check if the remaining data is less than the total amount
and therefore begins after the already processed data */ and therefore begins after the already processed data */
if(connssl->encdata_offset > inbuf[1].cbBuffer) { if(connssl->encdata_offset > inbuf[1].cbBuffer) {
memmove(connssl->encdata_buffer, memmove(connssl->encdata_buffer,
(connssl->encdata_buffer + connssl->encdata_offset) - (connssl->encdata_buffer + connssl->encdata_offset) -
inbuf[1].cbBuffer, inbuf[1].cbBuffer); inbuf[1].cbBuffer, inbuf[1].cbBuffer);
connssl->encdata_offset = inbuf[1].cbBuffer; connssl->encdata_offset = inbuf[1].cbBuffer;
if(sspi_status == SEC_I_CONTINUE_NEEDED) { if(sspi_status == SEC_I_CONTINUE_NEEDED) {
doread = FALSE; doread = FALSE;
@ -683,9 +686,9 @@ schannel_send(struct connectdata *conn, int sockindex,
/* check if the maximum stream sizes were queried */ /* check if the maximum stream sizes were queried */
if(connssl->stream_sizes.cbMaximumMessage == 0) { if(connssl->stream_sizes.cbMaximumMessage == 0) {
sspi_status = s_pSecFn->QueryContextAttributes( sspi_status = s_pSecFn->QueryContextAttributes(
&connssl->ctxt->ctxt_handle, &connssl->ctxt->ctxt_handle,
SECPKG_ATTR_STREAM_SIZES, SECPKG_ATTR_STREAM_SIZES,
&connssl->stream_sizes); &connssl->stream_sizes);
if(sspi_status != SEC_E_OK) { if(sspi_status != SEC_E_OK) {
*err = CURLE_SEND_ERROR; *err = CURLE_SEND_ERROR;
return -1; return -1;
@ -700,7 +703,7 @@ schannel_send(struct connectdata *conn, int sockindex,
/* calculate the complete message length and allocate a buffer for it */ /* calculate the complete message length and allocate a buffer for it */
data_len = connssl->stream_sizes.cbHeader + len + data_len = connssl->stream_sizes.cbHeader + len +
connssl->stream_sizes.cbTrailer; connssl->stream_sizes.cbTrailer;
data = (unsigned char *) malloc(data_len); data = (unsigned char *) malloc(data_len);
if(data == NULL) { if(data == NULL) {
*err = CURLE_OUT_OF_MEMORY; *err = CURLE_OUT_OF_MEMORY;
@ -733,19 +736,19 @@ schannel_send(struct connectdata *conn, int sockindex,
len = outbuf[0].cbBuffer + outbuf[1].cbBuffer + outbuf[2].cbBuffer; len = outbuf[0].cbBuffer + outbuf[1].cbBuffer + outbuf[2].cbBuffer;
/* /*
It's important to send the full message which includes the header, It's important to send the full message which includes the header,
encrypted payload, and trailer. Until the client receives all the encrypted payload, and trailer. Until the client receives all the
data a coherent message has not been delivered and the client data a coherent message has not been delivered and the client
can't read any of it. can't read any of it.
If we wanted to buffer the unwritten encrypted bytes, we would If we wanted to buffer the unwritten encrypted bytes, we would
tell the client that all data it has requested to be sent has been tell the client that all data it has requested to be sent has been
sent. The unwritten encrypted bytes would be the first bytes to sent. The unwritten encrypted bytes would be the first bytes to
send on the next invocation. send on the next invocation.
Here's the catch with this - if we tell the client that all the Here's the catch with this - if we tell the client that all the
bytes have been sent, will the client call this method again to bytes have been sent, will the client call this method again to
send the buffered data? Looking at who calls this function, it send the buffered data? Looking at who calls this function, it
seems the answer is NO. seems the answer is NO.
*/ */
/* send entire message or fail */ /* send entire message or fail */
@ -850,7 +853,7 @@ schannel_recv(struct connectdata *conn, int sockindex,
CURL_SCHANNEL_BUFFER_FREE_SIZE || connssl->encdata_length < len) { CURL_SCHANNEL_BUFFER_FREE_SIZE || connssl->encdata_length < len) {
/* increase internal encrypted data buffer */ /* increase internal encrypted data buffer */
reallocated_length = connssl->encdata_offset + reallocated_length = connssl->encdata_offset +
CURL_SCHANNEL_BUFFER_FREE_SIZE; CURL_SCHANNEL_BUFFER_FREE_SIZE;
/* make sure that the requested amount of data fits */ /* make sure that the requested amount of data fits */
if(reallocated_length < len) { if(reallocated_length < len) {
reallocated_length = len; reallocated_length = len;
@ -875,7 +878,8 @@ schannel_recv(struct connectdata *conn, int sockindex,
size = connssl->encdata_length - connssl->encdata_offset; size = connssl->encdata_length - connssl->encdata_offset;
if(size > 0) { if(size > 0) {
*err = Curl_read_plain(conn->sock[sockindex], *err = Curl_read_plain(conn->sock[sockindex],
(char *) (connssl->encdata_buffer + connssl->encdata_offset), (char *) (connssl->encdata_buffer +
connssl->encdata_offset),
size, &nread); size, &nread);
/* check for received data */ /* check for received data */
if(*err != CURLE_OK) if(*err != CURLE_OK)
@ -920,7 +924,7 @@ schannel_recv(struct connectdata *conn, int sockindex,
/* check if everything went fine (server may want to renegotiate /* check if everything went fine (server may want to renegotiate
or shutdown the connection context) */ or shutdown the connection context) */
if(sspi_status == SEC_E_OK || sspi_status == SEC_I_RENEGOTIATE || if(sspi_status == SEC_E_OK || sspi_status == SEC_I_RENEGOTIATE ||
sspi_status == SEC_I_CONTEXT_EXPIRED) { sspi_status == SEC_I_CONTEXT_EXPIRED) {
/* check for successfully decrypted data, even before actual /* check for successfully decrypted data, even before actual
renegotiation or shutdown of the connection context */ renegotiation or shutdown of the connection context */
if(inbuf[1].BufferType == SECBUFFER_DATA) { if(inbuf[1].BufferType == SECBUFFER_DATA) {
@ -929,7 +933,7 @@ schannel_recv(struct connectdata *conn, int sockindex,
/* increase buffer in order to fit the received amount of data */ /* increase buffer in order to fit the received amount of data */
size = inbuf[1].cbBuffer > CURL_SCHANNEL_BUFFER_FREE_SIZE ? size = inbuf[1].cbBuffer > CURL_SCHANNEL_BUFFER_FREE_SIZE ?
inbuf[1].cbBuffer : CURL_SCHANNEL_BUFFER_FREE_SIZE; inbuf[1].cbBuffer : CURL_SCHANNEL_BUFFER_FREE_SIZE;
if(connssl->decdata_length - connssl->decdata_offset < size || if(connssl->decdata_length - connssl->decdata_offset < size ||
connssl->decdata_length < len) { connssl->decdata_length < len) {
/* increase internal decrypted data buffer */ /* increase internal decrypted data buffer */
@ -972,13 +976,13 @@ schannel_recv(struct connectdata *conn, int sockindex,
/* check if the remaining data is less than the total amount /* check if the remaining data is less than the total amount
* and therefore begins after the already processed data * and therefore begins after the already processed data
*/ */
if(connssl->encdata_offset > inbuf[3].cbBuffer) { if(connssl->encdata_offset > inbuf[3].cbBuffer) {
/* move remaining encrypted data forward to the beginning of /* move remaining encrypted data forward to the beginning of
buffer */ buffer */
memmove(connssl->encdata_buffer, memmove(connssl->encdata_buffer,
(connssl->encdata_buffer + connssl->encdata_offset) - (connssl->encdata_buffer + connssl->encdata_offset) -
inbuf[3].cbBuffer, inbuf[3].cbBuffer); inbuf[3].cbBuffer, inbuf[3].cbBuffer);
connssl->encdata_offset = inbuf[3].cbBuffer; connssl->encdata_offset = inbuf[3].cbBuffer;
} }
@ -1033,11 +1037,12 @@ schannel_recv(struct connectdata *conn, int sockindex,
/* check if the server closed the connection */ /* check if the server closed the connection */
if(ret <= 0 && ( /* special check for Windows 2000 Professional */ if(ret <= 0 && ( /* special check for Windows 2000 Professional */
sspi_status == SEC_I_CONTEXT_EXPIRED || (sspi_status == SEC_E_OK && sspi_status == SEC_I_CONTEXT_EXPIRED ||
connssl->encdata_offset > 0 && connssl->encdata_buffer[0] == 0x15))) { (sspi_status == SEC_E_OK && connssl->encdata_offset > 0 &&
infof(data, "schannel: server closed the connection\n"); connssl->encdata_buffer[0] == 0x15))) {
infof(data, "schannel: server closed the conunection\n");
*err = CURLE_OK; *err = CURLE_OK;
return 0; retrn 0;
} }
/* check if something went wrong and we need to return an error */ /* check if something went wrong and we need to return an error */
@ -1131,18 +1136,18 @@ int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
InitSecBufferDesc(&outbuf_desc, &outbuf, 1); InitSecBufferDesc(&outbuf_desc, &outbuf, 1);
sspi_status = s_pSecFn->InitializeSecurityContext( sspi_status = s_pSecFn->InitializeSecurityContext(
&connssl->cred->cred_handle, &connssl->cred->cred_handle,
&connssl->ctxt->ctxt_handle, &connssl->ctxt->ctxt_handle,
host_name, host_name,
connssl->req_flags, connssl->req_flags,
0, 0,
0, 0,
NULL, NULL,
0, 0,
&connssl->ctxt->ctxt_handle, &connssl->ctxt->ctxt_handle,
&outbuf_desc, &outbuf_desc,
&connssl->ret_flags, &connssl->ret_flags,
&connssl->ctxt->time_stamp); &connssl->ctxt->time_stamp);
Curl_unicodefree(host_name); Curl_unicodefree(host_name);
@ -1292,18 +1297,18 @@ static CURLcode verify_certificate(struct connectdata *conn, int sockindex)
if(result == CURLE_OK) { if(result == CURLE_OK) {
CERT_SIMPLE_CHAIN *pSimpleChain = pChainContext->rgpChain[0]; CERT_SIMPLE_CHAIN *pSimpleChain = pChainContext->rgpChain[0];
DWORD dwTrustErrorMask = ~(DWORD)(CERT_TRUST_IS_NOT_TIME_NESTED| DWORD dwTrustErrorMask = ~(DWORD)(CERT_TRUST_IS_NOT_TIME_NESTED|
CERT_TRUST_REVOCATION_STATUS_UNKNOWN); CERT_TRUST_REVOCATION_STATUS_UNKNOWN);
dwTrustErrorMask &= pSimpleChain->TrustStatus.dwErrorStatus; dwTrustErrorMask &= pSimpleChain->TrustStatus.dwErrorStatus;
if(dwTrustErrorMask) { if(dwTrustErrorMask) {
if(dwTrustErrorMask & CERT_TRUST_IS_PARTIAL_CHAIN) if(dwTrustErrorMask & CERT_TRUST_IS_PARTIAL_CHAIN)
failf(data, "schannel: CertGetCertificateChain trust error" failf(data, "schannel: CertGetCertificateChain trust error"
" CERT_TRUST_IS_PARTIAL_CHAIN"); " CERT_TRUST_IS_PARTIAL_CHAIN");
if(dwTrustErrorMask & CERT_TRUST_IS_UNTRUSTED_ROOT) if(dwTrustErrorMask & CERT_TRUST_IS_UNTRUSTED_ROOT)
failf(data, "schannel: CertGetCertificateChain trust error" failf(data, "schannel: CertGetCertificateChain trust error"
" CERT_TRUST_IS_UNTRUSTED_ROOT"); " CERT_TRUST_IS_UNTRUSTED_ROOT");
if(dwTrustErrorMask & CERT_TRUST_IS_NOT_TIME_VALID) if(dwTrustErrorMask & CERT_TRUST_IS_NOT_TIME_VALID)
failf(data, "schannel: CertGetCertificateChain trust error" failf(data, "schannel: CertGetCertificateChain trust error"
" CERT_TRUST_IS_NOT_TIME_VALID"); " CERT_TRUST_IS_NOT_TIME_VALID");
failf(data, "schannel: CertGetCertificateChain error mask: 0x%08x", failf(data, "schannel: CertGetCertificateChain error mask: 0x%08x",
dwTrustErrorMask); dwTrustErrorMask);
result = CURLE_PEER_FAILED_VERIFICATION; result = CURLE_PEER_FAILED_VERIFICATION;