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package ui.tui;
import model.asn1.exceptions.ParseException;
import model.ca.Template;
import model.csr.CertificationRequest;
import model.pki.cert.Certificate;
import model.x501.Name;
import ui.Utils;
/**
* The screen that accepts a CSR and template and allows user to change its properties and issue.
*/
public class IssueScreen implements UIHandler {
private final JCA session;
private Template template;
private CertificationRequest incomingCSR;
/**
* EFFECTS: Init with the session.
*/
public IssueScreen(JCA session) {
this.session = session;
}
/**
* EFFECTS: Set current template and CSR in use by args.
* REQUIRES: args.length = 2, args[0] instanceof CertificateRequest, args[1] instanceof Template
* MODIFIES: args[1]
*/
@Override
public void enter(Object... args) {
this.incomingCSR = (CertificationRequest) args[0];
this.template = (Template) args[1];
}
/**
* EFFECTS: Print help.
*/
@Override
public void help() {
System.out.print("show\tView the current certificate\n"
+ "set\tSet properties or template\n"
+ "commit\tIssue the certificate\n"
+ "exit\tDiscard and go to main menu\n"
+ "help\tPrint this message\n");
}
/**
* EFFECTS: Print pending cert info.
*/
@Override
public void show() {
System.out.println("Requested Subject:\t" + incomingCSR.getCertificationRequestInfo().getSubject());
System.out.println("Subject:\t" + (template.getSubject() == null
? incomingCSR.getCertificationRequestInfo().getSubject()
: template.getSubject()));
System.out.println("Template:\t" + template.getName());
System.out.println("Validity:\t" + template.getValidity() + " days");
}
/**
* EFFECTS: Issue the cert and log it.
* MODIFIES: session
*/
@Override
public void commit() {
try {
Certificate certificate = session.getCa().signCert(incomingCSR.getCertificationRequestInfo(), template);
session.save();
System.out.println(Utils.toPEM(certificate.encodeDER(), "CERTIFICATE"));
session.setScreen(Screen.MAIN);
} catch (Throwable e) {
System.out.println(e.getMessage());
}
}
/**
* EFFECTS: Set or unset the subject.
* MODIFIES: this
*/
private void handleIssueSetSubject(String val) {
try {
if (val == null) {
template = new Template(template.getName(), template.isEnabled(), (Name) null, template.getValidity());
} else {
template = new Template(template.getName(), template.isEnabled(), val, template.getValidity());
}
} catch (ParseException e) {
System.out.println(e.getMessage());
}
}
/**
* EFFECTS: Set or unset the validity.
* MODIFIES: this
*/
private void handleIssueSetValidity(String val) {
if (val == null) {
System.out.println("Cannot unset validity");
return;
}
try {
long i = Long.parseLong(val);
if (i <= 0) {
System.out.println("Invalid validity days");
return;
}
template = new Template(template.getName(), template.isEnabled(), template.getSubject(), i);
} catch (NumberFormatException ignored) {
System.out.println("Invalid validity days");
}
}
/**
* EFFECTS: Handle the set command.
* MODIFIES: this
*/
private void handleIssueSet(String... args) {
if (args.length != 2 && args.length != 3) {
System.out.println("Usage: set <key> <value>");
System.out.println("Supported keys: subject validity");
return;
}
String val = args.length == 3 ? args[2] : null;
switch (args[1]) {
case "subject":
handleIssueSetSubject(val);
break;
case "validity":
handleIssueSetValidity(val);
break;
default:
System.out.println("Unknown key");
break;
}
}
@Override
public void command(String... args) {
if (args[0].equals("set")) {
handleIssueSet(args);
} else {
help();
}
}
/**
* EFFECTS: Clear the certificates and return main.
* MODIFIES: this
*/
@Override
public Screen exit() {
incomingCSR = null;
template = null;
return Screen.MAIN;
}
/**
* EFFECTS: Return "/subj/ %"
*/
@Override
public String getPS1() {
return String.format("/%s/ %%", template.getSubject() == null
? incomingCSR.getCertificationRequestInfo().getSubject()
: template.getSubject());
}
}
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