OM_uint32
_gss_ntlm_acquire_cred(OM_uint32 * min_stat,
const gss_name_t desired_name,
OM_uint32 time_req,
const gss_OID_set desired_mechs,
gss_cred_usage_t cred_usage,
gss_cred_id_t * output_cred_handle,
gss_OID_set * actual_mechs,
OM_uint32 * time_rec)
{
ntlm_name name = (ntlm_name) desired_name;
OM_uint32 maj_stat, junk;
ntlm_ctx ctx;
*min_stat = 0;
*output_cred_handle = GSS_C_NO_CREDENTIAL;
if (actual_mechs)
*actual_mechs = GSS_C_NO_OID_SET;
if (time_rec)
*time_rec = GSS_C_INDEFINITE;
if (desired_name == NULL)
return GSS_S_NO_CRED;
if (cred_usage == GSS_C_BOTH || cred_usage == GSS_C_ACCEPT) {
gss_ctx_id_t gctx;
maj_stat = _gss_ntlm_allocate_ctx(min_stat, name->domain, &ctx);
if (maj_stat != GSS_S_COMPLETE)
return maj_stat;
gctx = (gss_ctx_id_t)ctx;
_gss_ntlm_delete_sec_context(&junk, &gctx, NULL);
}
if (cred_usage == GSS_C_BOTH || cred_usage == GSS_C_INITIATE) {
ntlm_cred cred;
/* if we have a anon name, lets dup it directly */
if ((name->flags & NTLM_ANON_NAME) != 0) {
maj_stat = _gss_ntlm_duplicate_name(min_stat,
(gss_name_t)name,
(gss_name_t *)&cred);
if (maj_stat)
return maj_stat;
} else {
maj_stat = _gss_ntlm_have_cred(min_stat, name, &cred);
if (maj_stat)
return maj_stat;
}
*output_cred_handle = (gss_cred_id_t)cred;
}
return (GSS_S_COMPLETE);
}
OM_uint32 GSSAPI_CALLCONV
_gss_ntlm_acquire_cred(OM_uint32 *min_stat,
gss_const_name_t desired_name,
OM_uint32 time_req,
const gss_OID_set desired_mechs,
gss_cred_usage_t cred_usage,
gss_cred_id_t *output_cred_handle,
gss_OID_set *actual_mechs,
OM_uint32 *time_rec)
{
ntlm_name name = (ntlm_name) desired_name;
const char *domain = NULL;
OM_uint32 maj_stat;
ntlm_ctx ctx;
*min_stat = 0;
*output_cred_handle = GSS_C_NO_CREDENTIAL;
if (actual_mechs)
*actual_mechs = GSS_C_NO_OID_SET;
if (time_rec)
*time_rec = GSS_C_INDEFINITE;
if (cred_usage == GSS_C_BOTH || cred_usage == GSS_C_ACCEPT) {
maj_stat = _gss_ntlm_allocate_ctx(min_stat, &ctx);
if (maj_stat != GSS_S_COMPLETE)
return maj_stat;
domain = name != NULL ? name->domain : NULL;
maj_stat = (*ctx->server->nsi_probe)(min_stat, ctx->ictx, domain);
{
gss_ctx_id_t context = (gss_ctx_id_t)ctx;
OM_uint32 junk;
_gss_ntlm_delete_sec_context(&junk, &context, NULL);
}
if (maj_stat)
return maj_stat;
}
if (cred_usage == GSS_C_BOTH || cred_usage == GSS_C_INITIATE) {
ntlm_cred cred;
*min_stat = _gss_ntlm_get_user_cred(name, &cred);
if (*min_stat)
return GSS_S_NO_CRED;
cred->usage = cred_usage;
*output_cred_handle = (gss_cred_id_t)cred;
}
return (GSS_S_COMPLETE);
}
OM_uint32 GSSAPI_CALLCONV
_gss_ntlm_accept_sec_context
(OM_uint32 * minor_status,
gss_ctx_id_t * context_handle,
const gss_cred_id_t acceptor_cred_handle,
const gss_buffer_t input_token_buffer,
const gss_channel_bindings_t input_chan_bindings,
gss_name_t * src_name,
gss_OID * mech_type,
gss_buffer_t output_token,
OM_uint32 * ret_flags,
OM_uint32 * time_rec,
gss_cred_id_t * delegated_cred_handle
)
{
krb5_error_code ret;
struct ntlm_buf data;
OM_uint32 junk;
ntlm_ctx ctx;
output_token->value = NULL;
output_token->length = 0;
*minor_status = 0;
if (context_handle == NULL)
return GSS_S_FAILURE;
if (input_token_buffer == GSS_C_NO_BUFFER)
return GSS_S_FAILURE;
if (src_name)
*src_name = GSS_C_NO_NAME;
if (mech_type)
*mech_type = GSS_C_NO_OID;
if (ret_flags)
*ret_flags = 0;
if (time_rec)
*time_rec = 0;
if (delegated_cred_handle)
*delegated_cred_handle = GSS_C_NO_CREDENTIAL;
if (*context_handle == GSS_C_NO_CONTEXT) {
struct ntlm_type1 type1;
OM_uint32 major_status;
OM_uint32 retflags;
struct ntlm_buf out;
major_status = _gss_ntlm_allocate_ctx(minor_status, &ctx);
if (major_status)
return major_status;
*context_handle = (gss_ctx_id_t)ctx;
/* check if the mechs is allowed by remote service */
major_status = (*ctx->server->nsi_probe)(minor_status, ctx->ictx, NULL);
if (major_status) {
_gss_ntlm_delete_sec_context(minor_status, context_handle, NULL);
return major_status;
}
data.data = input_token_buffer->value;
data.length = input_token_buffer->length;
ret = heim_ntlm_decode_type1(&data, &type1);
if (ret) {
_gss_ntlm_delete_sec_context(minor_status, context_handle, NULL);
*minor_status = ret;
return GSS_S_FAILURE;
}
if ((type1.flags & NTLM_NEG_UNICODE) == 0) {
heim_ntlm_free_type1(&type1);
_gss_ntlm_delete_sec_context(minor_status, context_handle, NULL);
*minor_status = EINVAL;
return GSS_S_FAILURE;
}
if (type1.flags & NTLM_NEG_SIGN)
ctx->gssflags |= GSS_C_CONF_FLAG;
if (type1.flags & NTLM_NEG_SIGN)
ctx->gssflags |= GSS_C_INTEG_FLAG;
major_status = (*ctx->server->nsi_type2)(minor_status,
ctx->ictx,
type1.flags,
type1.hostname,
type1.domain,
&retflags,
&out);
heim_ntlm_free_type1(&type1);
if (major_status != GSS_S_COMPLETE) {
OM_uint32 junk;
_gss_ntlm_delete_sec_context(&junk, context_handle, NULL);
return major_status;
}
output_token->value = malloc(out.length);
if (output_token->value == NULL && out.length != 0) {
OM_uint32 junk;
_gss_ntlm_delete_sec_context(&junk, context_handle, NULL);
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
memcpy(output_token->value, out.data, out.length);
output_token->length = out.length;
ctx->flags = retflags;
return GSS_S_CONTINUE_NEEDED;
} else {
OM_uint32 maj_stat;
struct ntlm_type3 type3;
struct ntlm_buf session;
ctx = (ntlm_ctx)*context_handle;
data.data = input_token_buffer->value;
data.length = input_token_buffer->length;
ret = heim_ntlm_decode_type3(&data, 1, &type3);
if (ret) {
_gss_ntlm_delete_sec_context(minor_status, context_handle, NULL);
*minor_status = ret;
return GSS_S_FAILURE;
}
maj_stat = (*ctx->server->nsi_type3)(minor_status,
ctx->ictx,
&type3,
&session);
if (maj_stat) {
heim_ntlm_free_type3(&type3);
_gss_ntlm_delete_sec_context(minor_status, context_handle, NULL);
return maj_stat;
}
if (src_name) {
ntlm_name n = calloc(1, sizeof(*n));
if (n) {
n->user = strdup(type3.username);
n->domain = strdup(type3.targetname);
}
if (n == NULL || n->user == NULL || n->domain == NULL) {
gss_name_t tempn = (gss_name_t)n;
_gss_ntlm_release_name(&junk, &tempn);
heim_ntlm_free_type3(&type3);
_gss_ntlm_delete_sec_context(minor_status,
context_handle, NULL);
return maj_stat;
}
*src_name = (gss_name_t)n;
}
heim_ntlm_free_type3(&type3);
ret = krb5_data_copy(&ctx->sessionkey,
session.data, session.length);
if (ret) {
if (src_name)
_gss_ntlm_release_name(&junk, src_name);
_gss_ntlm_delete_sec_context(minor_status, context_handle, NULL);
*minor_status = ret;
return GSS_S_FAILURE;
}
if (session.length != 0) {
ctx->status |= STATUS_SESSIONKEY;
if (ctx->flags & NTLM_NEG_NTLM2_SESSION) {
_gss_ntlm_set_key(&ctx->u.v2.send, 1,
(ctx->flags & NTLM_NEG_KEYEX),
ctx->sessionkey.data,
ctx->sessionkey.length);
_gss_ntlm_set_key(&ctx->u.v2.recv, 0,
(ctx->flags & NTLM_NEG_KEYEX),
ctx->sessionkey.data,
ctx->sessionkey.length);
} else {
RC4_set_key(&ctx->u.v1.crypto_send.key,
ctx->sessionkey.length,
ctx->sessionkey.data);
RC4_set_key(&ctx->u.v1.crypto_recv.key,
ctx->sessionkey.length,
ctx->sessionkey.data);
}
}
if (mech_type)
*mech_type = GSS_NTLM_MECHANISM;
if (time_rec)
*time_rec = GSS_C_INDEFINITE;
ctx->status |= STATUS_OPEN;
if (ret_flags)
*ret_flags = ctx->gssflags;
return GSS_S_COMPLETE;
}
}
