119 lines
3.8 KiB
C
119 lines
3.8 KiB
C
#include "sasl_windows.h"
|
|
|
|
static const LPSTR SSPI_PACKAGE_NAME = "kerberos";
|
|
|
|
SECURITY_STATUS SEC_ENTRY sspi_acquire_credentials_handle(CredHandle *cred_handle, char *username, char *password, char *domain)
|
|
{
|
|
SEC_WINNT_AUTH_IDENTITY auth_identity;
|
|
SECURITY_INTEGER ignored;
|
|
|
|
auth_identity.Flags = SEC_WINNT_AUTH_IDENTITY_ANSI;
|
|
auth_identity.User = (LPSTR) username;
|
|
auth_identity.UserLength = strlen(username);
|
|
auth_identity.Password = (LPSTR) password;
|
|
auth_identity.PasswordLength = strlen(password);
|
|
auth_identity.Domain = (LPSTR) domain;
|
|
auth_identity.DomainLength = strlen(domain);
|
|
return call_sspi_acquire_credentials_handle(NULL, SSPI_PACKAGE_NAME, SECPKG_CRED_OUTBOUND, NULL, &auth_identity, NULL, NULL, cred_handle, &ignored);
|
|
}
|
|
|
|
int sspi_step(CredHandle *cred_handle, int has_context, CtxtHandle *context, PVOID *buffer, ULONG *buffer_length, char *target)
|
|
{
|
|
SecBufferDesc inbuf;
|
|
SecBuffer in_bufs[1];
|
|
SecBufferDesc outbuf;
|
|
SecBuffer out_bufs[1];
|
|
|
|
if (has_context > 0) {
|
|
// If we already have a context, we now have data to send.
|
|
// Put this data in an inbuf.
|
|
inbuf.ulVersion = SECBUFFER_VERSION;
|
|
inbuf.cBuffers = 1;
|
|
inbuf.pBuffers = in_bufs;
|
|
in_bufs[0].pvBuffer = *buffer;
|
|
in_bufs[0].cbBuffer = *buffer_length;
|
|
in_bufs[0].BufferType = SECBUFFER_TOKEN;
|
|
}
|
|
|
|
outbuf.ulVersion = SECBUFFER_VERSION;
|
|
outbuf.cBuffers = 1;
|
|
outbuf.pBuffers = out_bufs;
|
|
out_bufs[0].pvBuffer = NULL;
|
|
out_bufs[0].cbBuffer = 0;
|
|
out_bufs[0].BufferType = SECBUFFER_TOKEN;
|
|
|
|
ULONG context_attr = 0;
|
|
|
|
int ret = call_sspi_initialize_security_context(cred_handle,
|
|
has_context > 0 ? context : NULL,
|
|
(LPSTR) target,
|
|
ISC_REQ_ALLOCATE_MEMORY | ISC_REQ_MUTUAL_AUTH,
|
|
0,
|
|
SECURITY_NETWORK_DREP,
|
|
has_context > 0 ? &inbuf : NULL,
|
|
0,
|
|
context,
|
|
&outbuf,
|
|
&context_attr,
|
|
NULL);
|
|
|
|
*buffer = malloc(out_bufs[0].cbBuffer);
|
|
*buffer_length = out_bufs[0].cbBuffer;
|
|
memcpy(*buffer, out_bufs[0].pvBuffer, *buffer_length);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int sspi_send_client_authz_id(CtxtHandle *context, PVOID *buffer, ULONG *buffer_length, char *user_plus_realm)
|
|
{
|
|
SecPkgContext_Sizes sizes;
|
|
SECURITY_STATUS status = call_sspi_query_context_attributes(context, SECPKG_ATTR_SIZES, &sizes);
|
|
|
|
if (status != SEC_E_OK) {
|
|
return status;
|
|
}
|
|
|
|
size_t user_plus_realm_length = strlen(user_plus_realm);
|
|
int msgSize = 4 + user_plus_realm_length;
|
|
char *msg = malloc((sizes.cbSecurityTrailer + msgSize + sizes.cbBlockSize) * sizeof(char));
|
|
msg[sizes.cbSecurityTrailer + 0] = 1;
|
|
msg[sizes.cbSecurityTrailer + 1] = 0;
|
|
msg[sizes.cbSecurityTrailer + 2] = 0;
|
|
msg[sizes.cbSecurityTrailer + 3] = 0;
|
|
memcpy(&msg[sizes.cbSecurityTrailer + 4], user_plus_realm, user_plus_realm_length);
|
|
|
|
SecBuffer wrapBufs[3];
|
|
SecBufferDesc wrapBufDesc;
|
|
wrapBufDesc.cBuffers = 3;
|
|
wrapBufDesc.pBuffers = wrapBufs;
|
|
wrapBufDesc.ulVersion = SECBUFFER_VERSION;
|
|
|
|
wrapBufs[0].cbBuffer = sizes.cbSecurityTrailer;
|
|
wrapBufs[0].BufferType = SECBUFFER_TOKEN;
|
|
wrapBufs[0].pvBuffer = msg;
|
|
|
|
wrapBufs[1].cbBuffer = msgSize;
|
|
wrapBufs[1].BufferType = SECBUFFER_DATA;
|
|
wrapBufs[1].pvBuffer = msg + sizes.cbSecurityTrailer;
|
|
|
|
wrapBufs[2].cbBuffer = sizes.cbBlockSize;
|
|
wrapBufs[2].BufferType = SECBUFFER_PADDING;
|
|
wrapBufs[2].pvBuffer = msg + sizes.cbSecurityTrailer + msgSize;
|
|
|
|
status = call_sspi_encrypt_message(context, SECQOP_WRAP_NO_ENCRYPT, &wrapBufDesc, 0);
|
|
if (status != SEC_E_OK) {
|
|
free(msg);
|
|
return status;
|
|
}
|
|
|
|
*buffer_length = wrapBufs[0].cbBuffer + wrapBufs[1].cbBuffer + wrapBufs[2].cbBuffer;
|
|
*buffer = malloc(*buffer_length);
|
|
|
|
memcpy(*buffer, wrapBufs[0].pvBuffer, wrapBufs[0].cbBuffer);
|
|
memcpy(*buffer + wrapBufs[0].cbBuffer, wrapBufs[1].pvBuffer, wrapBufs[1].cbBuffer);
|
|
memcpy(*buffer + wrapBufs[0].cbBuffer + wrapBufs[1].cbBuffer, wrapBufs[2].pvBuffer, wrapBufs[2].cbBuffer);
|
|
|
|
free(msg);
|
|
return SEC_E_OK;
|
|
}
|