How to Get the Client's Environment Variables?

I have a page which need inputing account of the intranet then send a mail upon the intranet.So,it is important for me to verify if the account is legal or if this account is the user himself or herself in order to refuse any bad sending.
Of course I can get Environment Variables of "user.name" of my own PC.But How can I get Others before they can send mail?

You can't read with an applet some system properties, including the "user.name" property. Not even with a signed applet.
Here you have some links:
http://java.sun.com/docs/books/tutorial/applet/practical/properties.html
http://java.sun.com/docs/books/tutorial/applet/practical/security.html
http://java.sun.com/sfaq/#getProps
So you should find another way, for instance authentication.

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Dear All,
I know there are many other posts (some of them are very old) discuss about this issue. But unfortunately most of the posts endup with NO PROPER ANSWER. But still I believe that tehre has to be some way to do this. So this is my requirement.
I am using custom authentication module and I want to get the CLIENT MACHINE OS USER NAME for that. But I do not want to do any authentication against the client user domain.
How can I get this?
* There are some other way to get this using VB Scripts. But thats not a real solution for this due to followings
01. User has to manually allow to run VB scripts. So if user dissable that then we canot get the required info
02. Its working only with specific browsers(Mainly in IE and also we can get that thing work after installing plugins to Firefox.). So this is also depends with the bvrowser and plugings.
What I want to do is to get this info using a common way which is not depends with the browser or any thirdparty plugins.
Thanks,
Alex

Its good that you did some searching in the forums before you posted the question.
Most modern browsers would consider what you require as a security/privacy issue and prevents such information from being transmitted available(easily). IE might let you pull out this using a VB script or activex control. Browser specific addons/extension could work but they need some kind of installation to start with. Java could be a way to do it with all browsers, but the end user still has to grant access before it can do any such thing.
Lets say you were able to pull out such information from an end user, what would be next, get his mail id from outlook ? , access his browsing history, steal credit card information or read cookies?
Add to that , what if the end user accesses it using any other OS(linux,macintosh or even a smartphone) ? what about windows vista and windows 7 OS's , are you going to write code to handle all those cases too ?
Here's a blog posting which explains using NTLM authentication with Apex(it still needs configuration from the end user)
What I want to do is to get this info using a common way which is not depends with the browser or any thirdparty plugins.I guess if this is the question, then the answer would have to be no. I don't think you will be able to find a method that passes this information from the client side without any modification/configuration at their side

GSS-API How to get the client-to-service ticket

In Kerberos when requesting services, the client sends the following two messages to the TGS: A composed message of the Ticket-Granting Ticket and the ID of the requested serviceand authenticator (which is composed of the client ID and the timestamp), all encrypted using the client/TGS session key.
Then upon receiving these messages the TGS sends the followings to the client:
A: Client-to-server ticket (which includes the client ID, client network address, validity period and Client/server session key) encrypted using the service's secret key.
B: Client/server session key encrypted with the client/TGS session key.
Now I'm wondering how to obtain A and B throught the kerberos login in GSS-API . I have the following code that I use to request a kerberized service but it returns only a KerberosTicket in PrivateCredentialsSet for the Subject. A sessionKey can also be obtained form this KerberosTicket ! Which session key is this ? the session key B described above? and Where to get the Client-to-server ticket (A) described above ?
Thanks for any help !
Alex
lc = new LoginContext("login-client", new TextCallbackHandler());
lc.login();
mysubject = lc.getSubject();
java.util.Set principals = lc.getSubject().getPrincipals();
java.util.Iterator iterador = principals.iterator();
if (iterador.hasNext()){
KerberosPrincipal principal = (KerberosPrincipal) iterador.next();
clientName =principal.getName();
PrivilegedAction generateServiceTicket = new ClientAction(clientName,"[email protected]");
Subject.doAs(mysubject, generateServiceTicket);
Set prvCredentials = lc.getSubject().getPrivateCredentials();
for (Iterator i = prvCredentials.iterator(); i.hasNext(); j++) {
KerberosTicket ticket = (KerberosTicket) i.next();
prvKrbCrds = (KerberosTicket[]) mysubject.getPrivateCredentials().toArray(new KerberosTicket[0]);
public Object run() {
try{
GSSManager manager = GSSManager.getInstance();
Oid krb5Mechanism = new Oid("1.2.840.113554.1.2.2");
Oid krb5PrincipalNameType = new Oid("1.2.840.113554.1.2.2.1");
GSSName userName = manager.createName(pn,GSSName.NT_USER_NAME);
GSSCredential cred = manager.createCredential(usr,
GSSCredential.DEFAULT_LIFETIME,
krb5Mechanism,
GSSCredential.INITIATE_ONLY);
GSSName peerName = manager.createName(servicename,
GSSName.NT_HOSTBASED_SERVICE, krb5Mechanism);
GSSContext setContext = manager.createContext(peerName, krb5Mechanism, cred,
GSSContext.DEFAULT_LIFETIME);
setContext.requestInteg(false);
setContext.requestConf(false);
byte[] inputBuf = new byte[0];
byte[] tkt = setContext.initSecContext(inputBuf, 0, 0);
}catch(GSSException gsse){
gsse.printStackTrace();
}

In Kerberos when requesting services, the client sends the following two messages to the TGS: A composed message of the Ticket-Granting Ticket and the ID of the requested serviceand authenticator (which is composed of the client ID and the timestamp), all encrypted using the client/TGS session key.
Then upon receiving these messages the TGS sends the followings to the client:
A: Client-to-server ticket (which includes the client ID, client network address, validity period and Client/server session key) encrypted using the service's secret key.
B: Client/server session key encrypted with the client/TGS session key.
Now I'm wondering how to obtain A and B throught the kerberos login in GSS-API . I have the following code that I use to request a kerberized service but it returns only a KerberosTicket in PrivateCredentialsSet for the Subject. A sessionKey can also be obtained form this KerberosTicket ! Which session key is this ? the session key B described above? and Where to get the Client-to-server ticket (A) described above ?
Thanks for any help !
Alex
lc = new LoginContext("login-client", new TextCallbackHandler());
lc.login();
mysubject = lc.getSubject();
java.util.Set principals = lc.getSubject().getPrincipals();
java.util.Iterator iterador = principals.iterator();
if (iterador.hasNext()){
KerberosPrincipal principal = (KerberosPrincipal) iterador.next();
clientName =principal.getName();
PrivilegedAction generateServiceTicket = new ClientAction(clientName,"[email protected]");
Subject.doAs(mysubject, generateServiceTicket);
Set prvCredentials = lc.getSubject().getPrivateCredentials();
for (Iterator i = prvCredentials.iterator(); i.hasNext(); j++) {
KerberosTicket ticket = (KerberosTicket) i.next();
prvKrbCrds = (KerberosTicket[]) mysubject.getPrivateCredentials().toArray(new KerberosTicket[0]);
public Object run() {
try{
GSSManager manager = GSSManager.getInstance();
Oid krb5Mechanism = new Oid("1.2.840.113554.1.2.2");
Oid krb5PrincipalNameType = new Oid("1.2.840.113554.1.2.2.1");
GSSName userName = manager.createName(pn,GSSName.NT_USER_NAME);
GSSCredential cred = manager.createCredential(usr,
GSSCredential.DEFAULT_LIFETIME,
krb5Mechanism,
GSSCredential.INITIATE_ONLY);
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GSSName.NT_HOSTBASED_SERVICE, krb5Mechanism);
GSSContext setContext = manager.createContext(peerName, krb5Mechanism, cred,
GSSContext.DEFAULT_LIFETIME);
setContext.requestInteg(false);
setContext.requestConf(false);
byte[] inputBuf = new byte[0];
byte[] tkt = setContext.initSecContext(inputBuf, 0, 0);
}catch(GSSException gsse){
gsse.printStackTrace();
}

How to get the value of a variable in group footer in the report footer also

I have a placed a formula as below at the group footer and the report footer. The data is grouped on the basis of duedays which is again formula and the value in that is appearing correctly.
Whilereadingrecords;
Global Numbervar CNTONE;
Numbervar P := P+1;
IF P = 1 AND {@DUEDAYS} = 0
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ELSE IF P>1 AND {@DUEDAYS} = 0
THEN CNTONE := CNTONE + {spSUPPLIERSOA;1.INVOICEBAL}
At the group footer I get the value correctly for CNTONE but when I place the formula in Report footer I get the value for CNTONE as 0.
Please do let me know how I could get the same value in the report footer also.
Regards
Sreejith J

Hi Abhilash;
When I give the statement whileprintingrecords then my above formula sums up only the first record and the last record of the group and when I give whilereadingrecords it adds up all the data in the group correctly.
The formula that you mentioned for the report footer had worked out and it is showing my result correctly.
I did not put up the reset formula on the group footer because as the group changes I had used another variable in another formula for example for the second group I used
Whilereadingrecords;
Global Numbervar CNTTWO;
Numbervar Q := Q+1;
IF Q = 1 AND {@DUEDAYS} = 30
THEN CNTTWO := {spSUPPLIERSOA;1.INVOICEBAL}
ELSE IF Q>1 AND {@DUEDAYS} = 30
THEN CNTTWO := CNTTWO + {spSUPPLIERSOA;1.INVOICEBAL}
I have set up total 5 such formulas as the number of groups that will be formed is 5. I have put up these formulas on the group footer and suppressed it as I dont want to get it displayed.
The as you suggested the solution for Report Footer I did that and getting the result correctly.
I dont know I may be following a longer procedure
Take Care
Sreejith J

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To get the source IP address, you will need to enable File Share auditing: http://technet.microsoft.com/en-us/library/dd772690%28v=ws.10%29.aspx
Otherwise, you can simply disconnect the user session.
This posting is provided AS IS with no warranties or guarantees , and confers no rights.
Ahmed MALEK
My Website Link
My Linkedin Profile
My MVP Profile

How to get the client certificate at server side

hi, this is ravikiran
I am working on a project which requires, receiving a signed file from the client side and verify whether the file is signed by a valid certificate that is there in the servers keystore.
I have no idea how to do this.
can anyone help me.
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[sorry, deleted irrelevant wrong answer]

How to get the client's IP address from within Java Studio Creator JSP/Java

Hi there.
I just started using the Java Studio Creator 2 and now I need to get hold of the client IP address - this should be part of the request, but I cannot fint the right way to get hold of that information. I want to be able to access this information from within the Java-code in a JSP/JSPF-page.
Is there a new way of doing:
request.getRemoteAddr();
This is the way I remember it from the JSP/Servlet-days...
Sincerely,
- Oystein Saebo -

javax.servlet.http.HttpServletRequest req = (javax.servlet.http.HttpServletRequest) getExternalContext().getRequest();
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Pls help : How to get the client ip address in EJB

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I need to find the ip addr of the client which makes the remote call.
I tried using
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But it throws ServerNotActiveException .
When I tried this in RMI it works fine perfectly.
If i am right EJB is just similar to RME and it should work in it too..
Can you please help me in finding out the ip address of the client which makes the ejb call.
Thanks & Regards,
Mukunt

Hi Mukunt,
There is no portable way to do this in the Remote EJB programming model. The bean class
is written in a way that is agnostic to those kind of plumbing-related details of the caller.
--ken

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Is it possible to read the calling client computer name from within a Transaction execution when called as a Web Service (HTTP GET)?
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or
req.getRemoteHost();
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Thanks,
Francois.

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I accessed this system parameter by using the string above as the URL of an XML Query action block from within my existing BSL transactions. This aligns better with our current way of exposing the our MII transactions as Web Services.
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Thank you both.

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Hi All Experts,
I have some tricky kind of situation. Actually there is one deep structure <is_input>-create_posting_lock_req-request_body-reference and this path is stored in a variable v_field.
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Kindly help me with the situation.
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field-symbols:    <fs_field> TYPE any.
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assign (lv_field) to <fs_field>.
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    clear ls_components.
ENDLOOP.
this is the code and it dumps if i declare the field symbol as character, for charater field i don have any problem

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Hi everybody
I make various servlets, and like to get the client's environment variables (such as used by the SET command under Windows). Especially username which is set in Windows-NT.
Are there any straight forward way to get these?
.. or can I get them and return them via a javaScript?
Arne

The servlet runs on the server. The browser and JavaScript run on the client. If you wanted to use JavaScript to pass them back, you would have to pass them back to the server through another servlet.
Or you could use an applet and get at the standard Java properties. Nobody should use environment variables anyway, as you can't guarantee a computer even has them. :-)

How to Get the Client's Environment Variables?

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