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jdk/src/java.security.jgss/windows/native/libsspi_bridge/sspi.cpp
Weijun Wang 765a94258d 8304136: Match allocation and free in sspi.cpp 
Reviewed-by: djelinski
2023-03-24 18:40:07 +00:00

1686 lines
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/*
* Copyright (c) 2019, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* This library is client-side only, and only supports the default credentials.
* It speaks krb5 and SPNEGO. NTLM is excluded from SPNEGO negotiation.
*
* This library can be built directly with the following command:
* cl -I %OPENJDK%\src\java.security.jgss\share\native\libj2gss\ sspi.cpp \
* -link -dll -out:sspi_bridge.dll
*/
#define UNICODE
#define _UNICODE
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <Strsafe.h>
#include <ntsecapi.h>
#include <new>
#define GSS_DLL_FILE
#include <gssapi.h>
#define SECURITY_WIN32
#include <sspi.h>
// Otherwise an exception will be thrown
#define new new (std::nothrow)
// A debugging macro
#define PP(fmt, ...) \
if (trace) { \
fprintf(stderr, "[SSPI:%ld] " fmt "\n", __LINE__, ##__VA_ARGS__); \
fflush(stderr); \
}
#define SEC_SUCCESS(status) ((*minor_status = (status)), (status) >= SEC_E_OK)
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
// When SSPI_BRIDGE_TRACE is set, debug info goes to stderr. The value is ignored.
char* trace = getenv("SSPI_BRIDGE_TRACE");
void
dump(const char* title, PBYTE data, size_t len)
{
if (trace) {
fprintf(stderr, "==== %s ====\n", title);
for (size_t i = 0; i < len; i++) {
if (i != 0 && i % 16 == 0) {
fprintf(stderr, "\n");
}
fprintf(stderr, "%02X ", *(data + i) & 0xff);
}
fprintf(stderr, "\n");
}
}
gss_OID_desc KRB5_OID = {9, (void*)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02"};
gss_OID_desc SPNEGO_OID = {6, (void*)"\x2b\x06\x01\x05\x05\x02"};
gss_OID_desc USER_NAME_OID = {10, (void*)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x01"};
gss_OID_desc KRB5_NAME_OID = {10, (void*)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02\x01"};
gss_OID_desc HOST_SERVICE_NAME_OID = {10, (void*)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04"};
gss_OID_desc EXPORT_NAME_OID = {6, (void*)"\x2b\x06\x01\x05\x06\x04"};
struct gss_name_struct {
SEC_WCHAR* name;
};
struct gss_ctx_id_struct {
CredHandle* phCred;
CtxtHandle hCtxt;
SecPkgContext_Sizes SecPkgContextSizes;
SecPkgContext_NativeNames nnames;
BOOLEAN established;
BOOLEAN isSPNEGO;
BOOLEAN isLocalCred;
OM_uint32 flags;
};
struct gss_cred_id_struct {
CredHandle* phCredK;
CredHandle* phCredS;
long time;
};
/* This section holds supporting functions that are not exported */
static OM_uint32
seconds_until(int inputIsUTC, TimeStamp *time)
{
// time is local time
LARGE_INTEGER uiLocal;
FILETIME now;
GetSystemTimeAsFileTime(&now);
if (!inputIsUTC) {
FILETIME nowLocal;
if (FileTimeToLocalFileTime(&now, &nowLocal) == 0) {
return -1;
}
now = nowLocal;
}
uiLocal.HighPart = now.dwHighDateTime;
uiLocal.LowPart = now.dwLowDateTime;
if (time->QuadPart < uiLocal.QuadPart) {
return 0;
}
ULONGLONG diff = (time->QuadPart - uiLocal.QuadPart) / 10000000;
if (diff > (ULONGLONG)~(OM_uint32)0) {
return GSS_C_INDEFINITE;
}
return (OM_uint32)diff;
}
static void
show_time(const char* label, TimeStamp* ts)
{
if (trace) {
SYSTEMTIME stLocal;
FileTimeToSystemTime((FILETIME*)ts, &stLocal);
// Build a string showing the date and time.
PP("%s: %02d/%02d/%d %02d:%02d %uld", label,
stLocal.wMonth, stLocal.wDay, stLocal.wYear,
stLocal.wHour, stLocal.wMinute,
seconds_until(1, ts));
}
}
// isSPNEGO: true, SPNEGO. false, Kerberos.
static gss_ctx_id_t
new_context(BOOLEAN isSPNEGO)
{
gss_ctx_id_t out = new gss_ctx_id_struct;
if (out == NULL) {
return NULL;
}
out->phCred = NULL;
out->hCtxt.dwLower = out->hCtxt.dwUpper = NULL;
out->established = FALSE;
out->SecPkgContextSizes.cbMaxSignature
= out->SecPkgContextSizes.cbBlockSize
= out->SecPkgContextSizes.cbSecurityTrailer
= 0;
out->nnames.sClientName = out->nnames.sServerName = NULL;
out->isSPNEGO = isSPNEGO;
out->isLocalCred = FALSE;
return out;
}
static gss_cred_id_t
new_cred()
{
gss_cred_id_t out = new gss_cred_id_struct;
if (out) {
out->phCredK = out->phCredS = NULL;
out->time = 0L;
}
return out;
}
static int
flag_sspi_to_gss(int fin)
{
int fout = 0;
if (fin & ISC_REQ_MUTUAL_AUTH) fout |= GSS_C_MUTUAL_FLAG;
if (fin & ISC_REQ_CONFIDENTIALITY) fout |= GSS_C_CONF_FLAG;
if (fin & ISC_REQ_DELEGATE) fout |= GSS_C_DELEG_FLAG;
if (fin & ISC_REQ_INTEGRITY) fout |= GSS_C_INTEG_FLAG;
if (fin & ISC_REQ_REPLAY_DETECT) fout |= GSS_C_REPLAY_FLAG;
if (fin & ISC_REQ_SEQUENCE_DETECT) fout |= GSS_C_SEQUENCE_FLAG;
return fout;
}
static int
flag_gss_to_sspi(int fin)
{
int fout = 0;
if (fin & GSS_C_MUTUAL_FLAG) fout |= ISC_RET_MUTUAL_AUTH;
if (fin & GSS_C_CONF_FLAG) fout |= ISC_RET_CONFIDENTIALITY;
if (fin & GSS_C_DELEG_FLAG) fout |= ISC_RET_DELEGATE;
if (fin & GSS_C_INTEG_FLAG) fout |= ISC_RET_INTEGRITY;
if (fin & GSS_C_REPLAY_FLAG) fout |= ISC_RET_REPLAY_DETECT;
if (fin & GSS_C_SEQUENCE_FLAG) fout |= ISC_RET_SEQUENCE_DETECT;
return fout;
}
static BOOLEAN
is_same_oid(gss_const_OID o2, gss_const_OID o1)
{
return o1 && o2 && o1->length == o2->length
&& !memcmp(o1->elements, o2->elements, o2->length);
}
static BOOLEAN
has_oid(gss_const_OID_set set, gss_const_OID oid)
{
for (size_t i = 0; i < set->count; i++) {
if (is_same_oid(&set->elements[i], oid)) {
return TRUE;
}
}
return FALSE;
}
static void
show_oid(gss_const_OID mech)
{
if (trace) {
if (is_same_oid(mech, &KRB5_OID)) {
PP("Kerberos mech");
} else if (is_same_oid(mech, &SPNEGO_OID)) {
PP("SPNEGO mech");
} else if (is_same_oid(mech, &USER_NAME_OID)) {
PP("NT_USER_NAME name-type");
} else if (is_same_oid(mech, &KRB5_NAME_OID)) {
PP("KRB5_NAME name-type");
} else if (is_same_oid(mech, &HOST_SERVICE_NAME_OID)) {
PP("NT_HOSTBASED_SERVICE name-type");
} else if (is_same_oid(mech, &EXPORT_NAME_OID)) {
PP("NT_EXPORT_NAME name-type");
} else {
dump("UNKNOWN OID", (PBYTE)mech->elements, mech->length);
}
}
}
static void
show_oid_set(gss_const_OID_set mechs)
{
if (trace) {
if (mechs == NULL) {
PP("OID set is NULL");
return;
}
PP("gss_OID_set.count is %d", (int)mechs->count);
for (size_t i = 0; i < mechs->count; i++) {
show_oid(&mechs->elements[i]);
}
}
}
// Add realm to a name if there was none.
// Returns a newly allocated name.
static WCHAR*
get_full_name(WCHAR* input)
{
// input has realm, no need to add one
for (int i = 0;; i++) {
if (!input[i]) { // the end
break;
}
if (input[i] == L'\\') { // escaped
i++;
continue;
}
if (input[i] == L'@') {
size_t newlen = wcslen(input) + 1;
WCHAR* result = new WCHAR[newlen];
if (!result) {
return NULL;
}
wcscpy_s(result, newlen, input);
return result;
}
}
// Always use the default domain
const WCHAR* realm = _wgetenv(L"USERDNSDOMAIN");
if (realm == NULL) {
realm = L"";
}
size_t oldlen = wcslen(input);
size_t newlen = oldlen + 1 + wcslen(realm) + 1;
WCHAR* fullname = new WCHAR[newlen];
if (!fullname) {
return NULL;
}
wcscpy_s(fullname, newlen, input);
wcscat_s(fullname, newlen, L"@");
wcscat_s(fullname, newlen, realm);
PP("get_full_name returns %ls", fullname);
return fullname;
}
/* End support section */
/* This section holds GSS-API exported functions */
#define CHECK_OUTPUT(x) if (!x) return GSS_S_CALL_INACCESSIBLE_WRITE;
#define CHECK_BUFFER(b) if (!b || !b->value) return GSS_S_CALL_INACCESSIBLE_READ;
#define CHECK_OID(o) if (!o || !o->elements) return GSS_S_CALL_INACCESSIBLE_READ;
#define CHECK_NAME(n) if (!n || !(n->name)) return GSS_S_BAD_NAME;
#define CHECK_CONTEXT(c) if (!c) return GSS_S_NO_CONTEXT;
#define CHECK_CRED(c) if (!c || (!(cred_handle->phCredK) && !(cred_handle->phCredS))) \
return GSS_S_NO_CRED;
__declspec(dllexport) OM_uint32
gss_release_name(OM_uint32 *minor_status,
gss_name_t *name)
{
PP(">>>> Calling gss_release_name %p...", *name);
if (name != NULL && *name != GSS_C_NO_NAME) {
if ((*name)->name != NULL) {
delete[] (*name)->name;
}
delete *name;
*name = GSS_C_NO_NAME;
}
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_import_name(OM_uint32 *minor_status,
gss_const_buffer_t input_name_buffer,
gss_const_OID input_name_type,
gss_name_t *output_name)
{
PP(">>>> Calling gss_import_name...");
CHECK_BUFFER(input_name_buffer)
CHECK_OUTPUT(output_name)
int len = (int)input_name_buffer->length;
LPSTR input = (LPSTR)input_name_buffer->value;
if (input_name_type != NULL
&& is_same_oid(input_name_type, &EXPORT_NAME_OID)) {
if (len < 4 || input[0] != 4 || input[1] != 1 || input[2] != 0) {
return GSS_S_FAILURE;
}
int mechLen = (int)input[3]; /* including 06 len */
len -= mechLen + 8; /* 4 header bytes, and an int32 length after OID */
if (len <= 0) {
return GSS_S_FAILURE;
}
// Reject if mech is not krb5
if (mechLen - 2!= KRB5_OID.length ||
memcmp(input + 6, KRB5_OID.elements, mechLen - 2)) {
return GSS_S_FAILURE;;
}
input = input + mechLen + 8;
}
SEC_WCHAR* value = new SEC_WCHAR[len + 1];
if (value == NULL) {
goto err;
}
len = MultiByteToWideChar(CP_UTF8, 0, input, len, value, len+1);
if (len == 0) {
goto err;
}
value[len] = 0;
PP("import_name from %ls", value);
if (len > 33 && !wcscmp(value+len-33, L"@WELLKNOWN:ORG.H5L.REFERALS-REALM")) {
// Remove the wellknown referrals realms
value[len-33] = 0;
len -= 33;
} else if (value[len-1] == L'@') {
// Remove the empty realm. It might come from an NT_EXPORT_NAME.
value[len-1] = 0;
len--;
}
if (len == 0) {
goto err;
}
if (input_name_type != NULL
&& is_same_oid(input_name_type, &HOST_SERVICE_NAME_OID)) {
// HOST_SERVICE_NAME_OID takes the form of service@host.
for (int i = 0; i < len; i++) {
if (value[i] == L'\\') {
i++;
continue;
}
if (value[i] == L'@') {
value[i] = L'/';
break;
}
}
PP("Host-based service now %ls", value);
}
PP("import_name to %ls", value);
gss_name_struct* name = new gss_name_struct;
if (name == NULL) {
goto err;
}
name->name = value;
*output_name = (gss_name_t) name;
return GSS_S_COMPLETE;
err:
if (value != NULL) {
delete[] value;
}
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_compare_name(OM_uint32 *minor_status,
gss_const_name_t name1,
gss_const_name_t name2,
int *name_equal)
{
PP(">>>> Calling gss_compare_name...");
CHECK_NAME(name1)
CHECK_NAME(name2)
CHECK_OUTPUT(name_equal)
*name_equal = 0;
SEC_WCHAR* n1 = name1->name;
SEC_WCHAR* n2 = name2->name;
PP("Comparing %ls and %ls", n1, n2);
int l1 = lstrlen(n1);
int l2 = lstrlen(n2);
int r1 = l1; // position of @ or the end if none
int r2 = l2;
int i;
for (i = 0; i < l1; i++) {
if (n1[i] == L'\\') {
i++;
continue;
}
if (n1[i] == L'@') {
r1 = i;
break;
}
}
for (i = 0; i < l2; i++) {
if (n2[i] == L'\\') {
i++;
continue;
}
if (n2[i] == L'@') {
r2 = i;
break;
}
}
if (l1 < l2 && l1 != r2
|| l2 < l1 && l2 != r1) {
return GSS_S_COMPLETE; // different
}
if (l1 > l2) {
l1 = l2; // choose the smaller one. longer=smaller @ ...
}
// Two names are equal if they are the same or one has no realm and
// one has realm but they have the same name. If both have realm but
// different, they are treated different even if the names are the same.
// Note: the default name concept is not used here.
// Principal names on Windows are case-insensitive, both user name
// and service principal name.
if (CompareStringEx(LOCALE_NAME_SYSTEM_DEFAULT, NORM_IGNORECASE,
n1, l1, n2, l1, NULL, NULL, 0) == CSTR_EQUAL) {
*name_equal = 1;
}
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_canonicalize_name(OM_uint32 *minor_status,
gss_const_name_t input_name,
gss_const_OID mech_type,
gss_name_t *output_name)
{
PP(">>>> Calling gss_canonicalize_name...");
CHECK_NAME(input_name)
CHECK_OID(mech_type)
CHECK_OUTPUT(output_name)
if (!is_same_oid(mech_type, &KRB5_OID)) {
PP("Cannot canonicalize to non-krb5 OID");
return GSS_S_BAD_MECH;
}
gss_name_t names2 = new gss_name_struct;
if (names2 == NULL) {
return GSS_S_FAILURE;
}
names2->name = get_full_name(input_name->name);
if (names2->name == NULL) {
delete names2;
return GSS_S_FAILURE;
}
*output_name = names2;
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_export_name(OM_uint32 *minor_status,
gss_const_name_t input_name,
gss_buffer_t exported_name)
{
PP(">>>> Calling gss_export_name...");
CHECK_NAME(input_name)
CHECK_OUTPUT(exported_name)
OM_uint32 result = GSS_S_FAILURE;
SEC_WCHAR* name = input_name->name;
SEC_WCHAR* fullname = get_full_name(name);
if (!fullname) {
goto err;
}
PP("Make fullname: %ls -> %ls", name, fullname);
int len;
size_t namelen = wcslen(fullname);
if (namelen > 255) {
goto err;
}
len = (int)namelen;
// We only deal with not-so-long names.
// 04 01 00 ** 06 ** OID len:int32 name
int mechLen = KRB5_OID.length;
char* buffer = (char*) malloc(10 + mechLen + len);
if (buffer == NULL) {
goto err;
}
buffer[0] = 4;
buffer[1] = 1;
buffer[2] = 0;
buffer[3] = 2 + mechLen;
buffer[4] = 6;
buffer[5] = mechLen;
memcpy_s(buffer + 6, mechLen, KRB5_OID.elements, mechLen);
buffer[6 + mechLen] = buffer[7 + mechLen] = buffer[8 + mechLen] = 0;
buffer[9 + mechLen] = (char)len;
len = WideCharToMultiByte(CP_UTF8, 0, fullname, len,
buffer+10+mechLen, len, NULL, NULL);
if (len == 0) {
free(buffer);
goto err;
}
exported_name->length = 10 + mechLen + len;
exported_name->value = buffer;
result = GSS_S_COMPLETE;
err:
if (fullname != name) {
delete[] fullname;
}
return result;
}
__declspec(dllexport) OM_uint32
gss_display_name(OM_uint32 *minor_status,
gss_const_name_t input_name,
gss_buffer_t output_name_buffer,
gss_OID *output_name_type)
{
PP(">>>> Calling gss_display_name...");
CHECK_NAME(input_name)
CHECK_OUTPUT(output_name_buffer)
SEC_WCHAR* names = input_name->name;
int len = (int)wcslen(names);
char* buffer = (char*) malloc(4*len+1);
if (buffer == NULL) {
return GSS_S_FAILURE;
}
len = WideCharToMultiByte(CP_UTF8, 0, names, len, buffer, 4*len, NULL, NULL);
if (len == 0) {
free(buffer);
return GSS_S_FAILURE;
}
buffer[len] = 0;
output_name_buffer->length = len;
output_name_buffer->value = buffer;
PP("Name found: %ls -> %d [%s]", names, len, buffer);
if (output_name_type != NULL) {
*output_name_type = &KRB5_NAME_OID;
}
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_acquire_cred(OM_uint32 *minor_status,
gss_const_name_t desired_name,
OM_uint32 time_req,
gss_const_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)
{
PP(">>>> Calling gss_acquire_cred...");
CHECK_OUTPUT(output_cred_handle)
SECURITY_STATUS ss;
TimeStamp ts;
ts.QuadPart = 0;
cred_usage = 0;
PP("AcquireCredentialsHandle with %d %p", cred_usage, desired_mechs);
show_oid_set(desired_mechs);
BOOLEAN reqKerberos, reqSPNEGO;
if (!desired_mechs) {
reqKerberos = reqSPNEGO = TRUE;
} else {
if (has_oid(desired_mechs, &KRB5_OID)) {
PP("reqKerberos");
reqKerberos = TRUE;
}
if (has_oid(desired_mechs, &SPNEGO_OID)) {
PP("reqSPNEGO");
reqSPNEGO = TRUE;
}
if (!reqSPNEGO && !reqKerberos) {
return GSS_S_BAD_MECH;
}
}
if (actual_mechs) {
*actual_mechs = GSS_C_NO_OID_SET;
}
gss_cred_id_t cred = new_cred();
if (cred == NULL) {
goto err;
}
if (reqKerberos) {
cred->phCredK = new CredHandle;
if (cred->phCredK == NULL) {
goto err;
}
ss = AcquireCredentialsHandle(
NULL,
(LPWSTR)L"Kerberos",
cred_usage == 0 ? SECPKG_CRED_BOTH :
(cred_usage == 1 ? SECPKG_CRED_OUTBOUND : SECPKG_CRED_INBOUND),
NULL,
NULL,
NULL,
NULL,
cred->phCredK,
&ts);
if (!(SEC_SUCCESS(ss))) {
delete cred->phCredK;
cred->phCredK = NULL;
goto err;
}
}
if (reqSPNEGO) {
cred->phCredS = new CredHandle;
if (cred->phCredS == NULL) {
goto err;
}
SEC_WINNT_AUTH_IDENTITY_EX auth;
ZeroMemory(&auth, sizeof(auth));
auth.Version = SEC_WINNT_AUTH_IDENTITY_VERSION;
auth.Length = sizeof(auth);
auth.Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
auth.PackageList = (unsigned short*)L"Kerberos";
auth.PackageListLength = 8;
ss = AcquireCredentialsHandle(
NULL,
(LPWSTR)L"Negotiate",
cred_usage == 0 ? SECPKG_CRED_BOTH :
(cred_usage == 1 ? SECPKG_CRED_OUTBOUND : SECPKG_CRED_INBOUND),
NULL,
&auth,
NULL,
NULL,
cred->phCredS,
&ts);
if (!(SEC_SUCCESS(ss))) {
delete cred->phCredS;
cred->phCredS = NULL;
goto err;
}
}
if (actual_mechs) {
if (gss_create_empty_oid_set(minor_status, actual_mechs)) {
goto err;
}
if (reqKerberos) {
if (gss_add_oid_set_member(minor_status, &KRB5_OID, actual_mechs)) {
goto err;
}
}
if (reqSPNEGO) {
if (gss_add_oid_set_member(minor_status, &SPNEGO_OID, actual_mechs)) {
goto err;
}
}
}
*output_cred_handle = (gss_cred_id_t)cred;
// Note: ts here is weirdly huge, maybe because LSA retains the
// password and can re-acquire a TGT at anytime. It will be
// GSSCredential.INDEFINITE_LIFETIME.
show_time("cred expiration", &ts);
cred->time = seconds_until(1, &ts);
if (time_rec != NULL) {
*time_rec = cred->time;
}
// Since only default cred is supported, if there is a desired_name,
// we must make sure it is the same as the realname of the default cred.
if (desired_name != NULL) {
PP("Acquiring cred with a name. Check if it's me.");
gss_name_t realname;
if (gss_inquire_cred(minor_status, *output_cred_handle, &realname,
NULL, NULL, NULL) != GSS_S_COMPLETE) {
PP("Cannot get owner name of default creds");
goto err;
}
int equals = 0;
gss_compare_name(minor_status, realname, desired_name, &equals);
gss_release_name(minor_status, &realname);
PP("Comparing result: %d", equals);
if (!equals) {
goto err;
}
}
return GSS_S_COMPLETE;
err:
if (cred) {
OM_uint32 dummy;
gss_release_cred(&dummy, &cred);
}
if (actual_mechs) {
OM_uint32 dummy;
gss_release_oid_set(&dummy, actual_mechs);
}
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_release_cred(OM_uint32 *minor_status,
gss_cred_id_t *cred_handle)
{
PP(">>>> Calling gss_release_cred...");
if (cred_handle && *cred_handle) {
if ((*cred_handle)->phCredK) {
FreeCredentialsHandle((*cred_handle)->phCredK);
delete (*cred_handle)->phCredK;
}
if ((*cred_handle)->phCredS) {
FreeCredentialsHandle((*cred_handle)->phCredS);
delete (*cred_handle)->phCredS;
}
delete *cred_handle;
*cred_handle = GSS_C_NO_CREDENTIAL;
}
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_inquire_cred(OM_uint32 *minor_status,
gss_const_cred_id_t cred_handle,
gss_name_t *name,
OM_uint32 *lifetime,
gss_cred_usage_t *cred_usage,
gss_OID_set *mechanisms)
{
PP(">>>> Calling gss_inquire_cred...");
CHECK_CRED(cred_handle)
CredHandle* cred = cred_handle->phCredK
? cred_handle->phCredK
: cred_handle->phCredS;
SECURITY_STATUS ss;
if (name) {
*name = GSS_C_NO_NAME;
SecPkgCredentials_Names snames;
ss = QueryCredentialsAttributes(cred, SECPKG_CRED_ATTR_NAMES, &snames);
if (!SEC_SUCCESS(ss)) {
return GSS_S_FAILURE;
}
SEC_WCHAR* names = new SEC_WCHAR[lstrlen(snames.sUserName) + 1];
if (names == NULL) {
FreeContextBuffer(snames.sUserName);
return GSS_S_FAILURE;
}
StringCchCopy(names, lstrlen(snames.sUserName) + 1, snames.sUserName);
FreeContextBuffer(snames.sUserName);
PP("Allocate new name at %p", names);
gss_name_t name1 = new gss_name_struct;
if (name1 == NULL) {
delete[] names;
return GSS_S_FAILURE;
}
name1->name = names;
*name = (gss_name_t) name1;
}
if (lifetime) {
*lifetime = cred_handle->time;
}
if (cred_usage) {
*cred_usage = 1; // We only support INITIATE_ONLY now
}
if (mechanisms) {
// Useless for Java
}
// Others inquiries not supported yet
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_import_sec_context(OM_uint32 *minor_status,
gss_const_buffer_t interprocess_token,
gss_ctx_id_t *context_handle)
{
// Not transferable, return FAILURE
PP(">>>> Calling UNIMPLEMENTED gss_import_sec_context...");
*minor_status = 0;
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_init_sec_context(OM_uint32 *minor_status,
gss_const_cred_id_t initiator_cred_handle,
gss_ctx_id_t *context_handle,
gss_const_name_t target_name,
gss_const_OID mech_type,
OM_uint32 req_flags,
OM_uint32 time_req,
gss_const_channel_bindings_t input_chan_bindings,
gss_const_buffer_t input_token,
gss_OID *actual_mech_type,
gss_buffer_t output_token,
OM_uint32 *ret_flags,
OM_uint32 *time_rec)
{
PP(">>>> Calling gss_init_sec_context...");
CHECK_NAME(target_name)
CHECK_OUTPUT(output_token)
SECURITY_STATUS ss;
TimeStamp lifeTime;
SecBufferDesc inBuffDesc;
SecBuffer inSecBuff;
SecBufferDesc outBuffDesc;
SecBuffer outSecBuff;
BOOLEAN isSPNEGO = is_same_oid(mech_type, &SPNEGO_OID);
CredHandle* newCred = NULL;
gss_ctx_id_t pc;
output_token->length = 0;
output_token->value = NULL;
BOOLEAN firstTime = (*context_handle == GSS_C_NO_CONTEXT);
PP("First time? %d", firstTime);
if (firstTime) {
pc = new_context(isSPNEGO);
if (pc == NULL) {
return GSS_S_FAILURE;
}
*context_handle = (gss_ctx_id_t) pc;
} else {
pc = *context_handle;
}
if (pc == NULL) {
return GSS_S_NO_CONTEXT;
}
DWORD outFlag;
TCHAR outName[100];
OM_uint32 minor;
gss_buffer_desc tn;
gss_display_name(&minor, target_name, &tn, NULL);
int len = MultiByteToWideChar(CP_UTF8, 0, (LPCCH)tn.value, (int)tn.length,
outName, (sizeof(outName) / sizeof(outName[0])) - 1);
if (len == 0) {
goto err;
}
outName[len] = 0;
int flag = flag_gss_to_sspi(req_flags) | ISC_REQ_ALLOCATE_MEMORY;
outBuffDesc.ulVersion = SECBUFFER_VERSION;
outBuffDesc.cBuffers = 1;
outBuffDesc.pBuffers = &outSecBuff;
outSecBuff.BufferType = SECBUFFER_TOKEN;
if (!firstTime) {
inBuffDesc.ulVersion = SECBUFFER_VERSION;
inBuffDesc.cBuffers = 1;
inBuffDesc.pBuffers = &inSecBuff;
inSecBuff.BufferType = SECBUFFER_TOKEN;
inSecBuff.cbBuffer = (ULONG)input_token->length;
inSecBuff.pvBuffer = input_token->value;
} else if (!pc->phCred) {
if (isSPNEGO && initiator_cred_handle
&& initiator_cred_handle->phCredS) {
PP("Find SPNEGO credentials");
pc->phCred = initiator_cred_handle->phCredS;
pc->isLocalCred = FALSE;
} else if (!isSPNEGO && initiator_cred_handle
&& initiator_cred_handle->phCredK) {
PP("Find Kerberos credentials");
pc->phCred = initiator_cred_handle->phCredK;
pc->isLocalCred = FALSE;
} else {
PP("No credentials provided, acquire myself");
newCred = new CredHandle;
if (!newCred) {
goto err;
}
SEC_WINNT_AUTH_IDENTITY_EX auth;
ZeroMemory(&auth, sizeof(auth));
auth.Version = SEC_WINNT_AUTH_IDENTITY_VERSION;
auth.Length = sizeof(auth);
auth.Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
auth.PackageList = (unsigned short*)L"Kerberos";
auth.PackageListLength = 8;
ss = AcquireCredentialsHandle(
NULL,
(LPWSTR)(isSPNEGO ? L"Negotiate" : L"Kerberos"),
SECPKG_CRED_OUTBOUND,
NULL,
isSPNEGO ? &auth : NULL,
NULL,
NULL,
newCred,
&lifeTime);
if (!(SEC_SUCCESS(ss))) {
goto err;
}
pc->phCred = newCred;
pc->isLocalCred = TRUE;
}
}
ss = InitializeSecurityContext(
pc->phCred,
firstTime ? NULL : &pc->hCtxt,
outName,
flag,
0,
SECURITY_NATIVE_DREP,
firstTime ? NULL : &inBuffDesc,
0,
&pc->hCtxt,
&outBuffDesc,
&outFlag,
&lifeTime);
if (!SEC_SUCCESS(ss)) {
PP("InitializeSecurityContext failed");
goto err;
}
pc->flags = *ret_flags = flag_sspi_to_gss(outFlag);
// Ignore the result of the next call. Might fail before context established.
QueryContextAttributes(
&pc->hCtxt, SECPKG_ATTR_SIZES, &pc->SecPkgContextSizes);
PP("cbMaxSignature: %ld. cbBlockSize: %ld. cbSecurityTrailer: %ld",
pc->SecPkgContextSizes.cbMaxSignature,
pc->SecPkgContextSizes.cbBlockSize,
pc->SecPkgContextSizes.cbSecurityTrailer);
output_token->length = outSecBuff.cbBuffer;
if (outSecBuff.cbBuffer) {
// No idea how user would free the data. Let's duplicate one.
output_token->value = malloc(outSecBuff.cbBuffer);
if (!output_token->value) {
FreeContextBuffer(outSecBuff.pvBuffer);
goto err;
}
memcpy(output_token->value, outSecBuff.pvBuffer, outSecBuff.cbBuffer);
FreeContextBuffer(outSecBuff.pvBuffer);
}
if (ss == SEC_I_CONTINUE_NEEDED) {
return GSS_S_CONTINUE_NEEDED;
} else {
pc->established = true;
ss = QueryContextAttributes(&pc->hCtxt, SECPKG_ATTR_NATIVE_NAMES, &pc->nnames);
if (!SEC_SUCCESS(ss)) {
goto err;
}
PP("Names. %ls %ls", pc->nnames.sClientName, pc->nnames.sServerName);
*ret_flags |= GSS_C_PROT_READY_FLAG;
return GSS_S_COMPLETE;
}
err:
if (firstTime) {
OM_uint32 dummy;
gss_delete_sec_context(&dummy, context_handle, GSS_C_NO_BUFFER);
}
if (newCred) {
delete newCred;
}
if (output_token->value) {
gss_release_buffer(NULL, output_token);
}
output_token = GSS_C_NO_BUFFER;
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_accept_sec_context(OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
gss_const_cred_id_t acceptor_cred_handle,
gss_const_buffer_t input_token,
gss_const_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)
{
PP(">>>> Calling UNIMPLEMENTED gss_accept_sec_context...");
PP("gss_accept_sec_context is not supported in this initiator-only library");
if (output_token) {
output_token->length = 0;
output_token->value = NULL;
}
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_inquire_context(OM_uint32 *minor_status,
gss_const_ctx_id_t context_handle,
gss_name_t *src_name,
gss_name_t *targ_name,
OM_uint32 *lifetime_rec,
gss_OID *mech_type,
OM_uint32 *ctx_flags,
int *locally_initiated,
int *open)
{
PP(">>>> Calling gss_inquire_context...");
CHECK_CONTEXT(context_handle)
gss_name_t n1 = NULL;
gss_name_t n2 = NULL;
if (!context_handle->established) {
return GSS_S_NO_CONTEXT;
}
if (src_name != NULL) {
n1 = new gss_name_struct;
if (n1 == NULL) {
goto err;
}
n1->name = new SEC_WCHAR[lstrlen(context_handle->nnames.sClientName) + 1];
if (n1->name == NULL) {
goto err;
}
PP("Allocate new name at %p", n1->name);
StringCchCopy(n1->name, lstrlen(context_handle->nnames.sClientName) + 1,
context_handle->nnames.sClientName);
*src_name = (gss_name_t) n1;
}
if (targ_name != NULL) {
n2 = new gss_name_struct;
if (n2 == NULL) {
goto err;
}
n2->name = new SEC_WCHAR[lstrlen(context_handle->nnames.sServerName) + 1];
if (n2->name == NULL) {
goto err;
}
PP("Allocate new name at %p", n2->name);
StringCchCopy(n2->name, lstrlen(context_handle->nnames.sServerName) + 1,
context_handle->nnames.sServerName);
*targ_name = (gss_name_t) n2;
}
if (lifetime_rec != NULL) {
SecPkgContext_Lifespan ls;
SECURITY_STATUS ss;
ss = QueryContextAttributes(
(PCtxtHandle)&context_handle->hCtxt,
SECPKG_ATTR_LIFESPAN,
&ls);
if (!SEC_SUCCESS(ss)) {
goto err;
}
*lifetime_rec = seconds_until(0, &ls.tsExpiry);
}
if (mech_type != NULL) {
*mech_type = context_handle->isSPNEGO
? &SPNEGO_OID : &KRB5_OID;
}
if (ctx_flags != NULL) {
*ctx_flags = context_handle->flags;
}
if (locally_initiated != NULL) {
// We are always initiator
*locally_initiated = 1;
}
return GSS_S_COMPLETE;
err:
if (n1 != NULL) {
if (n1->name != NULL) {
delete[] n1->name;
}
delete n1;
n1 = NULL;
}
if (n2 != NULL) {
if (n2->name != NULL) {
delete[] n2->name;
}
delete n2;
n2 = NULL;
}
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_delete_sec_context(OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
gss_buffer_t output_token)
{
PP(">>>> Calling gss_delete_sec_context...");
CHECK_CONTEXT(context_handle)
DeleteSecurityContext(&(*context_handle)->hCtxt);
if ((*context_handle)->isLocalCred && (*context_handle)->phCred != NULL) {
FreeCredentialsHandle((*context_handle)->phCred);
(*context_handle)->phCred = NULL;
}
if ((*context_handle)->nnames.sClientName != NULL) {
FreeContextBuffer((*context_handle)->nnames.sClientName);
(*context_handle)->nnames.sClientName = NULL;
}
if ((*context_handle)->nnames.sServerName != NULL) {
FreeContextBuffer((*context_handle)->nnames.sServerName);
(*context_handle)->nnames.sServerName = NULL;
}
delete (*context_handle);
*context_handle = GSS_C_NO_CONTEXT;
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_context_time(OM_uint32 *minor_status,
gss_const_ctx_id_t context_handle,
OM_uint32 *time_rec)
{
PP(">>>> Calling IMPLEMENTED gss_context_time...");
CHECK_CONTEXT(context_handle)
CHECK_OUTPUT(time_rec)
SECURITY_STATUS ss;
SecPkgContext_Lifespan ls;
ss = QueryContextAttributes(
(PCtxtHandle)&context_handle->hCtxt,
SECPKG_ATTR_LIFESPAN,
&ls);
if (ss == SEC_E_OK) {
*time_rec = seconds_until(0, &ls.tsExpiry);
show_time("context start", &ls.tsStart);
show_time("context expiry", &ls.tsExpiry);
return *time_rec == 0 ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE;
} else {
return GSS_S_FAILURE;
}
}
__declspec(dllexport) OM_uint32
gss_wrap_size_limit(OM_uint32 *minor_status,
gss_const_ctx_id_t context_handle,
int conf_req_flag,
gss_qop_t qop_req,
OM_uint32 req_output_size,
OM_uint32 *max_input_size)
{
PP(">>>> Calling gss_wrap_size_limit...");
CHECK_CONTEXT(context_handle)
CHECK_OUTPUT(max_input_size)
*max_input_size = req_output_size
- context_handle->SecPkgContextSizes.cbSecurityTrailer
- context_handle->SecPkgContextSizes.cbBlockSize;
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_export_sec_context(OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
gss_buffer_t interprocess_token)
{
PP(">>>> Calling UNIMPLEMENTED gss_export_sec_context...");
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_get_mic(OM_uint32 *minor_status,
gss_const_ctx_id_t context_handle,
gss_qop_t qop_req,
gss_const_buffer_t message_buffer,
gss_buffer_t msg_token)
{
PP(">>>> Calling gss_get_mic...");
CHECK_CONTEXT(context_handle)
CHECK_BUFFER(message_buffer)
CHECK_OUTPUT(msg_token)
SECURITY_STATUS ss;
SecBufferDesc buffDesc;
SecBuffer secBuff[2];
buffDesc.cBuffers = 2;
buffDesc.pBuffers = secBuff;
buffDesc.ulVersion = SECBUFFER_VERSION;
secBuff[0].BufferType = SECBUFFER_DATA;
secBuff[0].cbBuffer = (ULONG)message_buffer->length;
secBuff[0].pvBuffer = message_buffer->value;
secBuff[1].BufferType = SECBUFFER_TOKEN;
secBuff[1].cbBuffer = context_handle->SecPkgContextSizes.cbMaxSignature;
secBuff[1].pvBuffer = msg_token->value = malloc(secBuff[1].cbBuffer);
if (!secBuff[1].pvBuffer) {
goto err;
}
ss = MakeSignature((PCtxtHandle)&context_handle->hCtxt, 0, &buffDesc, 0);
if (!SEC_SUCCESS(ss)) {
goto err;
}
msg_token->length = secBuff[1].cbBuffer;
return GSS_S_COMPLETE;
err:
msg_token->length = 0;
msg_token->value = NULL;
if (secBuff[1].pvBuffer) {
free(secBuff[1].pvBuffer);
}
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_verify_mic(OM_uint32 *minor_status,
gss_const_ctx_id_t context_handle,
gss_const_buffer_t message_buffer,
gss_const_buffer_t token_buffer,
gss_qop_t *qop_state)
{
PP(">>>> Calling gss_verify_mic...");
CHECK_CONTEXT(context_handle)
CHECK_BUFFER(message_buffer)
CHECK_BUFFER(token_buffer)
SECURITY_STATUS ss;
SecBufferDesc buffDesc;
SecBuffer secBuff[2];
ULONG qop;
buffDesc.ulVersion = SECBUFFER_VERSION;
buffDesc.cBuffers = 2;
buffDesc.pBuffers = secBuff;
secBuff[0].BufferType = SECBUFFER_TOKEN;
secBuff[0].cbBuffer = (ULONG)token_buffer->length;
secBuff[0].pvBuffer = token_buffer->value;
secBuff[1].BufferType = SECBUFFER_DATA;
secBuff[1].cbBuffer = (ULONG)message_buffer->length;
secBuff[1].pvBuffer = message_buffer->value;
ss = VerifySignature((PCtxtHandle)&context_handle->hCtxt, &buffDesc, 0, &qop);
if (qop_state) {
*qop_state = qop;
}
if (ss == SEC_E_OK) {
return GSS_S_COMPLETE;
} else if (ss == SEC_E_OUT_OF_SEQUENCE) {
return GSS_S_UNSEQ_TOKEN;
} else {
return GSS_S_BAD_SIG;
}
}
__declspec(dllexport) OM_uint32
gss_wrap(OM_uint32 *minor_status,
gss_const_ctx_id_t context_handle,
int conf_req_flag,
gss_qop_t qop_req,
gss_const_buffer_t input_message_buffer,
int *conf_state,
gss_buffer_t output_message_buffer)
{
PP(">>>> Calling gss_wrap...");
CHECK_CONTEXT(context_handle)
CHECK_BUFFER(input_message_buffer)
CHECK_OUTPUT(output_message_buffer)
SECURITY_STATUS ss;
SecBufferDesc buffDesc;
SecBuffer secBuff[3] = {0};
buffDesc.ulVersion = SECBUFFER_VERSION;
buffDesc.cBuffers = 3;
buffDesc.pBuffers = secBuff;
secBuff[0].BufferType = SECBUFFER_TOKEN;
secBuff[0].cbBuffer = context_handle->SecPkgContextSizes.cbSecurityTrailer;
secBuff[0].pvBuffer = malloc(
context_handle->SecPkgContextSizes.cbSecurityTrailer
+ input_message_buffer->length
+ context_handle->SecPkgContextSizes.cbBlockSize);;
if (!secBuff[0].pvBuffer) {
goto err;
}
secBuff[1].BufferType = SECBUFFER_DATA;
secBuff[1].cbBuffer = (ULONG)input_message_buffer->length;
secBuff[1].pvBuffer = malloc(secBuff[1].cbBuffer);
if (!secBuff[1].pvBuffer) {
goto err;
}
memcpy_s(secBuff[1].pvBuffer, secBuff[1].cbBuffer,
input_message_buffer->value, input_message_buffer->length);
secBuff[2].BufferType = SECBUFFER_PADDING;
secBuff[2].cbBuffer = context_handle->SecPkgContextSizes.cbBlockSize;
secBuff[2].pvBuffer = malloc(secBuff[2].cbBuffer);
if (!secBuff[2].pvBuffer) {
goto err;
}
ss = EncryptMessage((PCtxtHandle)&context_handle->hCtxt,
conf_req_flag ? 0 : SECQOP_WRAP_NO_ENCRYPT,
&buffDesc, 0);
if (conf_state) {
*conf_state = conf_req_flag;
}
if (!SEC_SUCCESS(ss)) {
goto err;
}
memcpy_s((PBYTE)secBuff[0].pvBuffer + secBuff[0].cbBuffer,
input_message_buffer->length + context_handle->SecPkgContextSizes.cbBlockSize,
secBuff[1].pvBuffer,
secBuff[1].cbBuffer);
memcpy_s((PBYTE)secBuff[0].pvBuffer + secBuff[0].cbBuffer + secBuff[1].cbBuffer,
context_handle->SecPkgContextSizes.cbBlockSize,
secBuff[2].pvBuffer,
secBuff[2].cbBuffer);
output_message_buffer->value = secBuff[0].pvBuffer;
output_message_buffer->length = secBuff[0].cbBuffer + secBuff[1].cbBuffer
+ secBuff[2].cbBuffer;
free(secBuff[1].pvBuffer);
free(secBuff[2].pvBuffer);
return GSS_S_COMPLETE;
err:
if (secBuff[0].pvBuffer) {
free(secBuff[0].pvBuffer);
}
if (secBuff[1].pvBuffer) {
free(secBuff[1].pvBuffer);
}
if (secBuff[2].pvBuffer) {
free(secBuff[2].pvBuffer);
}
output_message_buffer->length = 0;
output_message_buffer->value = NULL;
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_unwrap(OM_uint32 *minor_status,
gss_const_ctx_id_t context_handle,
gss_const_buffer_t input_message_buffer,
gss_buffer_t output_message_buffer,
int *conf_state,
gss_qop_t *qop_state)
{
PP(">>>> Calling gss_unwrap...");
CHECK_CONTEXT(context_handle)
CHECK_BUFFER(input_message_buffer)
CHECK_OUTPUT(output_message_buffer)
SECURITY_STATUS ss;
SecBufferDesc buffDesc;
SecBuffer secBuff[2] = {0};
ULONG ulQop = 0;
buffDesc.cBuffers = 2;
buffDesc.pBuffers = secBuff;
buffDesc.ulVersion = SECBUFFER_VERSION;
secBuff[0].BufferType = SECBUFFER_STREAM;
secBuff[0].cbBuffer = (ULONG)input_message_buffer->length;
secBuff[0].pvBuffer = malloc(input_message_buffer->length);
if (!secBuff[0].pvBuffer) {
goto err;
}
memcpy_s(secBuff[0].pvBuffer, input_message_buffer->length,
input_message_buffer->value, input_message_buffer->length);
secBuff[1].BufferType = SECBUFFER_DATA;
secBuff[1].cbBuffer = 0;
secBuff[1].pvBuffer = NULL;
ss = DecryptMessage((PCtxtHandle)&context_handle->hCtxt, &buffDesc, 0, &ulQop);
if (qop_state) {
*qop_state = ulQop;
}
if (!SEC_SUCCESS(ss)) {
goto err;
}
// Must allocate a new memory block so client can release it correctly
output_message_buffer->length = secBuff[1].cbBuffer;
output_message_buffer->value = malloc(secBuff[1].cbBuffer);
if (!output_message_buffer->value) {
goto err;
}
memcpy_s(output_message_buffer->value, secBuff[1].cbBuffer,
secBuff[1].pvBuffer, secBuff[1].cbBuffer);
*conf_state = ulQop == SECQOP_WRAP_NO_ENCRYPT ? 0 : 1;
free(secBuff[0].pvBuffer);
return GSS_S_COMPLETE;
err:
if (secBuff[0].pvBuffer) {
free(secBuff[0].pvBuffer);
}
output_message_buffer->length = 0;
output_message_buffer->value = NULL;
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_indicate_mechs(OM_uint32 *minor_status,
gss_OID_set *mech_set)
{
PP(">>>> Calling gss_indicate_mechs...");
OM_uint32 major = GSS_S_COMPLETE;
ULONG ccPackages;
PSecPkgInfo packages;
EnumerateSecurityPackages(&ccPackages, &packages);
PP("EnumerateSecurityPackages returns %ld", ccPackages);
for (unsigned int i = 0; i < ccPackages; i++) {
PP("#%d: %ls, %ls\n", i, packages[i].Name, packages[i].Comment);
}
FreeContextBuffer(packages);
// Hardcode kerberos and SPNEGO support
major = gss_create_empty_oid_set(minor_status, mech_set);
if (major != GSS_S_COMPLETE) {
goto done;
}
major = gss_add_oid_set_member(minor_status, &KRB5_OID, mech_set);
if (major != GSS_S_COMPLETE) {
goto done;
}
major = gss_add_oid_set_member(minor_status, &SPNEGO_OID, mech_set);
if (major != GSS_S_COMPLETE) {
goto done;
}
done:
if (major != GSS_S_COMPLETE) {
gss_release_oid_set(minor_status, mech_set);
}
return major;
}
__declspec(dllexport) OM_uint32
gss_inquire_names_for_mech(OM_uint32 *minor_status,
gss_const_OID mechanism,
gss_OID_set *name_types)
{
PP(">>>> Calling gss_inquire_names_for_mech...");
CHECK_OID(mechanism)
if (gss_create_empty_oid_set(minor_status, name_types)) {
return GSS_S_FAILURE;
}
if (gss_add_oid_set_member(minor_status, &USER_NAME_OID, name_types)) {
goto err;
}
if (gss_add_oid_set_member(minor_status, &HOST_SERVICE_NAME_OID, name_types)) {
goto err;
}
if (!is_same_oid(mechanism, &SPNEGO_OID)) {
if (gss_add_oid_set_member(minor_status, &EXPORT_NAME_OID, name_types)) {
goto err;
}
}
return GSS_S_COMPLETE;
err:
gss_release_oid_set(minor_status, name_types);
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_add_oid_set_member(OM_uint32 *minor_status,
gss_const_OID member_oid,
gss_OID_set *oid_set)
{
PP(">>>> Calling gss_add_oid_set_member...");
CHECK_OID(member_oid)
CHECK_OUTPUT(oid_set)
int count = (int)(*oid_set)->count;
for (int i = 0; i < count; i++) {
if (is_same_oid(&(*oid_set)->elements[i], member_oid)) {
// already there
return GSS_S_COMPLETE;
}
}
gss_OID existing = (*oid_set)->elements;
gss_OID newcopy = new gss_OID_desc[count + 1];
if (newcopy == NULL) {
return GSS_S_FAILURE;
}
if (existing) {
memcpy_s(newcopy, (count + 1) * sizeof(gss_OID_desc),
existing, count * sizeof(gss_OID_desc));
}
newcopy[count].length = member_oid->length;
newcopy[count].elements = new char[member_oid->length];
if (newcopy[count].elements == NULL) {
delete[] newcopy;
return GSS_S_FAILURE;
}
memcpy_s(newcopy[count].elements, member_oid->length,
member_oid->elements, member_oid->length);
(*oid_set)->elements = newcopy;
(*oid_set)->count++;
if (existing) {
delete[] existing;
}
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_display_status(OM_uint32 *minor_status,
OM_uint32 status_value,
int status_type,
gss_const_OID mech_type,
OM_uint32 *message_context,
gss_buffer_t status_string)
{
PP(">>>> Calling gss_display_status...");
TCHAR msg[256];
int len = FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
0, status_value,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
msg, 256, 0);
if (len > 0) {
status_string->value = malloc(len + 20);
if (!status_string->value) {
status_string = GSS_C_NO_BUFFER;
return GSS_S_FAILURE;
}
status_string->length = sprintf_s(
(LPSTR)status_string->value, len + 19,
"(%lx) %ls", status_value, msg);
} else {
status_string->value = malloc(33);
if (!status_string->value) {
status_string = GSS_C_NO_BUFFER;
return GSS_S_FAILURE;
}
status_string->length = sprintf_s(
(LPSTR)status_string->value, 32,
"status is %lx", status_value);
}
if (status_string->length <= 0) {
gss_release_buffer(NULL, status_string);
status_string = GSS_C_NO_BUFFER;
return GSS_S_FAILURE;
} else {
return GSS_S_COMPLETE;
}
}
__declspec(dllexport) OM_uint32
gss_create_empty_oid_set(OM_uint32 *minor_status,
gss_OID_set *oid_set)
{
PP(">>>> Calling gss_create_empty_oid_set...");
CHECK_OUTPUT(oid_set)
if (*oid_set = new gss_OID_set_desc) {
memset(*oid_set, 0, sizeof(gss_OID_set_desc));
return GSS_S_COMPLETE;
}
return GSS_S_FAILURE;
}
__declspec(dllexport) OM_uint32
gss_release_oid_set(OM_uint32 *minor_status,
gss_OID_set *set)
{
PP(">>>> Calling gss_release_oid_set...");
if (set == NULL || *set == GSS_C_NO_OID_SET) {
return GSS_S_COMPLETE;
}
for (size_t i = 0; i < (*set)->count; i++) {
delete[] (*set)->elements[i].elements;
}
delete[] (*set)->elements;
delete *set;
*set = GSS_C_NO_OID_SET;
return GSS_S_COMPLETE;
}
__declspec(dllexport) OM_uint32
gss_release_buffer(OM_uint32 *minor_status,
gss_buffer_t buffer)
{
PP(">>>> Calling gss_release_buffer...");
if (buffer == NULL || buffer == GSS_C_NO_BUFFER) {
return GSS_S_COMPLETE;
}
if (buffer->value) {
free(buffer->value);
buffer->value = NULL;
}
buffer->length = 0;
return GSS_S_COMPLETE;
}
/* End implemented section */
#ifdef __cplusplus
}
#endif
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