Java Code Examples for sun.security.jgss.GSSUtil#useSubjectCredsOnly()
The following examples show how to use
sun.security.jgss.GSSUtil#useSubjectCredsOnly() .
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Example 1
| Source File: Krb5Util.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
|
/**
* Retrieves the ServiceCreds for the specified server principal from
* the Subject in the specified AccessControlContext. If not found, and if
* useSubjectCredsOnly is false, then obtain from a LoginContext.
*
* NOTE: This method is also used by JSSE Kerberos Cipher Suites
*/
public static ServiceCreds getServiceCreds(GSSCaller caller,
String serverPrincipal, AccessControlContext acc)
throws LoginException {
Subject accSubj = Subject.getSubject(acc);
ServiceCreds sc = null;
if (accSubj != null) {
sc = ServiceCreds.getInstance(accSubj, serverPrincipal);
}
if (sc == null && !GSSUtil.useSubjectCredsOnly(caller)) {
Subject subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
sc = ServiceCreds.getInstance(subject, serverPrincipal);
}
return sc;
}
Example 2
| Source File: NativeGSSFactory.java From hottub with GNU General Public License v2.0 | 6 votes |
|
private GSSCredElement getCredFromSubject(GSSNameElement name,
boolean initiate)
throws GSSException {
Oid mech = cStub.getMech();
Vector<GSSCredElement> creds = GSSUtil.searchSubject
(name, mech, initiate, GSSCredElement.class);
// If Subject is present but no native creds available
if (creds != null && creds.isEmpty()) {
if (GSSUtil.useSubjectCredsOnly(caller)) {
throw new GSSException(GSSException.NO_CRED);
}
}
GSSCredElement result = ((creds == null || creds.isEmpty()) ?
null : creds.firstElement());
// Force permission check before returning the cred to caller
if (result != null) {
result.doServicePermCheck();
}
return result;
}
Example 3
| Source File: Krb5Util.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 6 votes |
|
/**
* Retrieves the ticket corresponding to the client/server principal
* pair from the Subject in the specified AccessControlContext.
* If the ticket can not be found in the Subject, and if
* useSubjectCredsOnly is false, then obtain ticket from
* a LoginContext.
*/
static KerberosTicket getTicket(GSSCaller caller,
String clientPrincipal, String serverPrincipal,
AccessControlContext acc) throws LoginException {
// Try to get ticket from acc's Subject
Subject accSubj = Subject.getSubject(acc);
KerberosTicket ticket =
SubjectComber.find(accSubj, serverPrincipal, clientPrincipal,
KerberosTicket.class);
// Try to get ticket from Subject obtained from GSSUtil
if (ticket == null && !GSSUtil.useSubjectCredsOnly(caller)) {
Subject subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
ticket = SubjectComber.find(subject,
serverPrincipal, clientPrincipal, KerberosTicket.class);
}
return ticket;
}
Example 4
| Source File: NativeGSSFactory.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 6 votes |
|
private GSSCredElement getCredFromSubject(GSSNameElement name,
boolean initiate)
throws GSSException {
Oid mech = cStub.getMech();
Vector<GSSCredElement> creds = GSSUtil.searchSubject
(name, mech, initiate, GSSCredElement.class);
// If Subject is present but no native creds available
if (creds != null && creds.isEmpty()) {
if (GSSUtil.useSubjectCredsOnly(caller)) {
throw new GSSException(GSSException.NO_CRED);
}
}
GSSCredElement result = ((creds == null || creds.isEmpty()) ?
null : creds.firstElement());
// Force permission check before returning the cred to caller
if (result != null) {
result.doServicePermCheck();
}
return result;
}
Example 5
| Source File: NativeGSSFactory.java From TencentKona-8 with GNU General Public License v2.0 | 6 votes |
|
private GSSCredElement getCredFromSubject(GSSNameElement name,
boolean initiate)
throws GSSException {
Oid mech = cStub.getMech();
Vector<GSSCredElement> creds = GSSUtil.searchSubject
(name, mech, initiate, GSSCredElement.class);
// If Subject is present but no native creds available
if (creds != null && creds.isEmpty()) {
if (GSSUtil.useSubjectCredsOnly(caller)) {
throw new GSSException(GSSException.NO_CRED);
}
}
GSSCredElement result = ((creds == null || creds.isEmpty()) ?
null : creds.firstElement());
// Force permission check before returning the cred to caller
if (result != null) {
result.doServicePermCheck();
}
return result;
}
Example 6
| Source File: Krb5Util.java From jdk8u_jdk with GNU General Public License v2.0 | 6 votes |
|
/**
* Retrieves the ServiceCreds for the specified server principal from
* the Subject in the specified AccessControlContext. If not found, and if
* useSubjectCredsOnly is false, then obtain from a LoginContext.
*
* NOTE: This method is also used by JSSE Kerberos Cipher Suites
*/
public static ServiceCreds getServiceCreds(GSSCaller caller,
String serverPrincipal, AccessControlContext acc)
throws LoginException {
Subject accSubj = Subject.getSubject(acc);
ServiceCreds sc = null;
if (accSubj != null) {
sc = ServiceCreds.getInstance(accSubj, serverPrincipal);
}
if (sc == null && !GSSUtil.useSubjectCredsOnly(caller)) {
Subject subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
sc = ServiceCreds.getInstance(subject, serverPrincipal);
}
return sc;
}
Example 7
| Source File: NativeGSSFactory.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
|
private GSSCredElement getCredFromSubject(GSSNameElement name,
boolean initiate)
throws GSSException {
Oid mech = cStub.getMech();
Vector<GSSCredElement> creds = GSSUtil.searchSubject
(name, mech, initiate, GSSCredElement.class);
// If Subject is present but no native creds available
if (creds != null && creds.isEmpty()) {
if (GSSUtil.useSubjectCredsOnly(caller)) {
throw new GSSException(GSSException.NO_CRED);
}
}
GSSCredElement result = ((creds == null || creds.isEmpty()) ?
null : creds.firstElement());
// Force permission check before returning the cred to caller
if (result != null) {
result.doServicePermCheck();
}
return result;
}
Example 8
| Source File: Krb5Util.java From TencentKona-8 with GNU General Public License v2.0 | 6 votes |
|
/**
* Retrieves the ServiceCreds for the specified server principal from
* the Subject in the specified AccessControlContext. If not found, and if
* useSubjectCredsOnly is false, then obtain from a LoginContext.
*
* NOTE: This method is also used by JSSE Kerberos Cipher Suites
*/
public static ServiceCreds getServiceCreds(GSSCaller caller,
String serverPrincipal, AccessControlContext acc)
throws LoginException {
Subject accSubj = Subject.getSubject(acc);
ServiceCreds sc = null;
if (accSubj != null) {
sc = ServiceCreds.getInstance(accSubj, serverPrincipal);
}
if (sc == null && !GSSUtil.useSubjectCredsOnly(caller)) {
Subject subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
sc = ServiceCreds.getInstance(subject, serverPrincipal);
}
return sc;
}
Example 9
| Source File: NativeGSSFactory.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
|
private GSSCredElement getCredFromSubject(GSSNameElement name,
boolean initiate)
throws GSSException {
Oid mech = cStub.getMech();
Vector<GSSCredElement> creds = GSSUtil.searchSubject
(name, mech, initiate, GSSCredElement.class);
// If Subject is present but no native creds available
if (creds != null && creds.isEmpty()) {
if (GSSUtil.useSubjectCredsOnly(caller)) {
throw new GSSException(GSSException.NO_CRED);
}
}
GSSCredElement result = ((creds == null || creds.isEmpty()) ?
null : creds.firstElement());
// Force permission check before returning the cred to caller
if (result != null) {
result.doServicePermCheck();
}
return result;
}
Example 10
| Source File: Krb5Util.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 6 votes |
|
/**
* Retrieves the ServiceCreds for the specified server principal from
* the Subject in the specified AccessControlContext. If not found, and if
* useSubjectCredsOnly is false, then obtain from a LoginContext.
*
* NOTE: This method is also used by JSSE Kerberos Cipher Suites
*/
public static ServiceCreds getServiceCreds(GSSCaller caller,
String serverPrincipal, AccessControlContext acc)
throws LoginException {
Subject accSubj = Subject.getSubject(acc);
ServiceCreds sc = null;
if (accSubj != null) {
sc = ServiceCreds.getInstance(accSubj, serverPrincipal);
}
if (sc == null && !GSSUtil.useSubjectCredsOnly(caller)) {
Subject subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
sc = ServiceCreds.getInstance(subject, serverPrincipal);
}
return sc;
}
Example 11
| Source File: Krb5Util.java From openjdk-jdk9 with GNU General Public License v2.0 | 6 votes |
|
/**
* Retrieves the ServiceCreds for the specified server principal from
* the Subject in the specified AccessControlContext. If not found, and if
* useSubjectCredsOnly is false, then obtain from a LoginContext.
*
* NOTE: This method is also used by JSSE Kerberos Cipher Suites
*/
public static ServiceCreds getServiceCreds(GSSCaller caller,
String serverPrincipal, AccessControlContext acc)
throws LoginException {
Subject accSubj = Subject.getSubject(acc);
ServiceCreds sc = null;
if (accSubj != null) {
sc = ServiceCreds.getInstance(accSubj, serverPrincipal);
}
if (sc == null && !GSSUtil.useSubjectCredsOnly(caller)) {
Subject subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
sc = ServiceCreds.getInstance(subject, serverPrincipal);
}
return sc;
}
Example 12
| Source File: Krb5Util.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
|
/**
* Retrieves the caller's Subject, or Subject obtained by logging in
* via the specified caller.
*
* Caller must have permission to:
* - access the Subject
* - create LoginContext
* - read the auth.login.defaultCallbackHandler security property
*
* NOTE: This method is used by JSSE Kerberos Cipher Suites
*/
public static Subject getSubject(GSSCaller caller,
AccessControlContext acc) throws LoginException {
// Try to get the Subject from acc
Subject subject = Subject.getSubject(acc);
// Try to get Subject obtained from GSSUtil
if (subject == null && !GSSUtil.useSubjectCredsOnly(caller)) {
subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
}
return subject;
}
Example 13
| Source File: Krb5Util.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 5 votes |
|
/**
* Retrieves the caller's Subject, or Subject obtained by logging in
* via the specified caller.
*
* Caller must have permission to:
* - access the Subject
* - create LoginContext
* - read the auth.login.defaultCallbackHandler security property
*
* NOTE: This method is used by JSSE Kerberos Cipher Suites
*/
public static Subject getSubject(GSSCaller caller,
AccessControlContext acc) throws LoginException {
// Try to get the Subject from acc
Subject subject = Subject.getSubject(acc);
// Try to get Subject obtained from GSSUtil
if (subject == null && !GSSUtil.useSubjectCredsOnly(caller)) {
subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
}
return subject;
}
Example 14
| Source File: Krb5Util.java From openjdk-8-source with GNU General Public License v2.0 | 5 votes |
|
/**
* Retrieves the caller's Subject, or Subject obtained by logging in
* via the specified caller.
*
* Caller must have permission to:
* - access the Subject
* - create LoginContext
* - read the auth.login.defaultCallbackHandler security property
*
* NOTE: This method is used by JSSE Kerberos Cipher Suites
*/
public static Subject getSubject(GSSCaller caller,
AccessControlContext acc) throws LoginException {
// Try to get the Subject from acc
Subject subject = Subject.getSubject(acc);
// Try to get Subject obtained from GSSUtil
if (subject == null && !GSSUtil.useSubjectCredsOnly(caller)) {
subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
}
return subject;
}
Example 15
| Source File: Krb5Util.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
|
/**
* Retrieves the caller's Subject, or Subject obtained by logging in
* via the specified caller.
*
* Caller must have permission to:
* - access the Subject
* - create LoginContext
* - read the auth.login.defaultCallbackHandler security property
*
* NOTE: This method is used by JSSE Kerberos Cipher Suites
*/
public static Subject getSubject(GSSCaller caller,
AccessControlContext acc) throws LoginException {
// Try to get the Subject from acc
Subject subject = Subject.getSubject(acc);
// Try to get Subject obtained from GSSUtil
if (subject == null && !GSSUtil.useSubjectCredsOnly(caller)) {
subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
}
return subject;
}
Example 16
| Source File: Krb5Util.java From openjdk-8 with GNU General Public License v2.0 | 4 votes |
|
/**
* Retrieve the service ticket for serverPrincipal from caller's Subject
* or from Subject obtained by logging in, or if not found, via the
* Ticket Granting Service using the TGT obtained from the Subject.
*
* Caller must have permission to:
* - access and update Subject's private credentials
* - create LoginContext
* - read the auth.login.defaultCallbackHandler security property
*
* NOTE: This method is used by JSSE Kerberos Cipher Suites
*/
public static KerberosTicket getTicketFromSubjectAndTgs(GSSCaller caller,
String clientPrincipal, String serverPrincipal, String tgsPrincipal,
AccessControlContext acc)
throws LoginException, KrbException, IOException {
// 1. Try to find service ticket in acc subject
Subject accSubj = Subject.getSubject(acc);
KerberosTicket ticket = SubjectComber.find(accSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
Subject loginSubj = null;
if (!GSSUtil.useSubjectCredsOnly(caller)) {
// 2. Try to get ticket from login
try {
loginSubj = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
ticket = SubjectComber.find(loginSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
} catch (LoginException e) {
// No login entry to use
// ignore and continue
}
}
// Service ticket not found in subject or login
// Try to get TGT to acquire service ticket
// 3. Try to get TGT from acc subject
KerberosTicket tgt = SubjectComber.find(accSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
boolean fromAcc;
if (tgt == null && loginSubj != null) {
// 4. Try to get TGT from login subject
tgt = SubjectComber.find(loginSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
fromAcc = false;
} else {
fromAcc = true;
}
// 5. Try to get service ticket using TGT
if (tgt != null) {
Credentials tgtCreds = ticketToCreds(tgt);
Credentials serviceCreds = Credentials.acquireServiceCreds(
serverPrincipal, tgtCreds);
if (serviceCreds != null) {
ticket = credsToTicket(serviceCreds);
// Store service ticket in acc's Subject
if (fromAcc && accSubj != null && !accSubj.isReadOnly()) {
accSubj.getPrivateCredentials().add(ticket);
}
}
}
return ticket;
}
Example 17
| Source File: Krb5Util.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
/**
* Retrieve the service ticket for serverPrincipal from caller's Subject
* or from Subject obtained by logging in, or if not found, via the
* Ticket Granting Service using the TGT obtained from the Subject.
*
* Caller must have permission to:
* - access and update Subject's private credentials
* - create LoginContext
* - read the auth.login.defaultCallbackHandler security property
*
* NOTE: This method is used by JSSE Kerberos Cipher Suites
*/
public static KerberosTicket getTicketFromSubjectAndTgs(GSSCaller caller,
String clientPrincipal, String serverPrincipal, String tgsPrincipal,
AccessControlContext acc)
throws LoginException, KrbException, IOException {
// 1. Try to find service ticket in acc subject
Subject accSubj = Subject.getSubject(acc);
KerberosTicket ticket = SubjectComber.find(accSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
Subject loginSubj = null;
if (!GSSUtil.useSubjectCredsOnly(caller)) {
// 2. Try to get ticket from login
try {
loginSubj = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
ticket = SubjectComber.find(loginSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
} catch (LoginException e) {
// No login entry to use
// ignore and continue
}
}
// Service ticket not found in subject or login
// Try to get TGT to acquire service ticket
// 3. Try to get TGT from acc subject
KerberosTicket tgt = SubjectComber.find(accSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
boolean fromAcc;
if (tgt == null && loginSubj != null) {
// 4. Try to get TGT from login subject
tgt = SubjectComber.find(loginSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
fromAcc = false;
} else {
fromAcc = true;
}
// 5. Try to get service ticket using TGT
if (tgt != null) {
Credentials tgtCreds = ticketToCreds(tgt);
Credentials serviceCreds = Credentials.acquireServiceCreds(
serverPrincipal, tgtCreds);
if (serviceCreds != null) {
ticket = credsToTicket(serviceCreds);
// Store service ticket in acc's Subject
if (fromAcc && accSubj != null && !accSubj.isReadOnly()) {
accSubj.getPrivateCredentials().add(ticket);
}
}
}
return ticket;
}
Example 18
| Source File: Krb5Util.java From openjdk-jdk9 with GNU General Public License v2.0 | 4 votes |
|
/**
* Retrieve the service ticket for serverPrincipal from caller's Subject
* or from Subject obtained by logging in, or if not found, via the
* Ticket Granting Service using the TGT obtained from the Subject.
*
* Caller must have permission to:
* - access and update Subject's private credentials
* - create LoginContext
* - read the auth.login.defaultCallbackHandler security property
*
* NOTE: This method is used by JSSE Kerberos Cipher Suites
*/
public static KerberosTicket getTicketFromSubjectAndTgs(GSSCaller caller,
String clientPrincipal, String serverPrincipal, String tgsPrincipal,
AccessControlContext acc)
throws LoginException, KrbException, IOException {
// 1. Try to find service ticket in acc subject
Subject accSubj = Subject.getSubject(acc);
KerberosTicket ticket = SubjectComber.find(accSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
Subject loginSubj = null;
if (!GSSUtil.useSubjectCredsOnly(caller)) {
// 2. Try to get ticket from login
try {
loginSubj = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
ticket = SubjectComber.find(loginSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
} catch (LoginException e) {
// No login entry to use
// ignore and continue
}
}
// Service ticket not found in subject or login
// Try to get TGT to acquire service ticket
// 3. Try to get TGT from acc subject
KerberosTicket tgt = SubjectComber.find(accSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
boolean fromAcc;
if (tgt == null && loginSubj != null) {
// 4. Try to get TGT from login subject
tgt = SubjectComber.find(loginSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
fromAcc = false;
} else {
fromAcc = true;
}
// 5. Try to get service ticket using TGT
if (tgt != null) {
Credentials tgtCreds = ticketToCreds(tgt);
Credentials serviceCreds = Credentials.acquireServiceCreds(
serverPrincipal, tgtCreds);
if (serviceCreds != null) {
ticket = credsToTicket(serviceCreds);
// Store service ticket in acc's Subject
if (fromAcc && accSubj != null && !accSubj.isReadOnly()) {
accSubj.getPrivateCredentials().add(ticket);
}
}
}
return ticket;
}
Example 19
| Source File: Krb5Util.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
|
/**
* Retrieve the service ticket for serverPrincipal from caller's Subject
* or from Subject obtained by logging in, or if not found, via the
* Ticket Granting Service using the TGT obtained from the Subject.
*
* Caller must have permission to:
* - access and update Subject's private credentials
* - create LoginContext
* - read the auth.login.defaultCallbackHandler security property
*
* NOTE: This method is used by JSSE Kerberos Cipher Suites
*/
public static KerberosTicket getTicketFromSubjectAndTgs(GSSCaller caller,
String clientPrincipal, String serverPrincipal, String tgsPrincipal,
AccessControlContext acc)
throws LoginException, KrbException, IOException {
// 1. Try to find service ticket in acc subject
Subject accSubj = Subject.getSubject(acc);
KerberosTicket ticket = SubjectComber.find(accSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
Subject loginSubj = null;
if (!GSSUtil.useSubjectCredsOnly(caller)) {
// 2. Try to get ticket from login
try {
loginSubj = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
ticket = SubjectComber.find(loginSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
} catch (LoginException e) {
// No login entry to use
// ignore and continue
}
}
// Service ticket not found in subject or login
// Try to get TGT to acquire service ticket
// 3. Try to get TGT from acc subject
KerberosTicket tgt = SubjectComber.find(accSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
boolean fromAcc;
if (tgt == null && loginSubj != null) {
// 4. Try to get TGT from login subject
tgt = SubjectComber.find(loginSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
fromAcc = false;
} else {
fromAcc = true;
}
// 5. Try to get service ticket using TGT
if (tgt != null) {
Credentials tgtCreds = ticketToCreds(tgt);
Credentials serviceCreds = Credentials.acquireServiceCreds(
serverPrincipal, tgtCreds);
if (serviceCreds != null) {
ticket = credsToTicket(serviceCreds);
// Store service ticket in acc's Subject
if (fromAcc && accSubj != null && !accSubj.isReadOnly()) {
accSubj.getPrivateCredentials().add(ticket);
}
}
}
return ticket;
}
Example 20
| Source File: Krb5Util.java From dragonwell8_jdk with GNU General Public License v2.0 | 4 votes |
|
/**
* Retrieve the service ticket for serverPrincipal from caller's Subject
* or from Subject obtained by logging in, or if not found, via the
* Ticket Granting Service using the TGT obtained from the Subject.
*
* Caller must have permission to:
* - access and update Subject's private credentials
* - create LoginContext
* - read the auth.login.defaultCallbackHandler security property
*
* NOTE: This method is used by JSSE Kerberos Cipher Suites
*/
public static KerberosTicket getTicketFromSubjectAndTgs(GSSCaller caller,
String clientPrincipal, String serverPrincipal, String tgsPrincipal,
AccessControlContext acc)
throws LoginException, KrbException, IOException {
// 1. Try to find service ticket in acc subject
Subject accSubj = Subject.getSubject(acc);
KerberosTicket ticket = SubjectComber.find(accSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
Subject loginSubj = null;
if (!GSSUtil.useSubjectCredsOnly(caller)) {
// 2. Try to get ticket from login
try {
loginSubj = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
ticket = SubjectComber.find(loginSubj,
serverPrincipal, clientPrincipal, KerberosTicket.class);
if (ticket != null) {
return ticket; // found it
}
} catch (LoginException e) {
// No login entry to use
// ignore and continue
}
}
// Service ticket not found in subject or login
// Try to get TGT to acquire service ticket
// 3. Try to get TGT from acc subject
KerberosTicket tgt = SubjectComber.find(accSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
boolean fromAcc;
if (tgt == null && loginSubj != null) {
// 4. Try to get TGT from login subject
tgt = SubjectComber.find(loginSubj,
tgsPrincipal, clientPrincipal, KerberosTicket.class);
fromAcc = false;
} else {
fromAcc = true;
}
// 5. Try to get service ticket using TGT
if (tgt != null) {
Credentials tgtCreds = ticketToCreds(tgt);
Credentials serviceCreds = Credentials.acquireServiceCreds(
serverPrincipal, tgtCreds);
if (serviceCreds != null) {
ticket = credsToTicket(serviceCreds);
// Store service ticket in acc's Subject
if (fromAcc && accSubj != null && !accSubj.isReadOnly()) {
accSubj.getPrivateCredentials().add(ticket);
}
}
}
return ticket;
}
