X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.util%2Fsrc%2Forg%2Fargeo%2Fosgi%2Fuseradmin%2FOsUserUtils.java;fp=org.argeo.util%2Fsrc%2Forg%2Fargeo%2Fosgi%2Fuseradmin%2FOsUserUtils.java;h=ad6bf881653aabd565e1f16abfc99b69ea621f42;hb=9f729eeb8255a9d800ad2506735dda8cc215a135;hp=0000000000000000000000000000000000000000;hpb=f9efbe5228615951dd8482a4582aa24e00c10ce5;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.util/src/org/argeo/osgi/useradmin/OsUserUtils.java b/org.argeo.util/src/org/argeo/osgi/useradmin/OsUserUtils.java
new file mode 100644
index 000000000..ad6bf8816
--- /dev/null
+++ b/org.argeo.util/src/org/argeo/osgi/useradmin/OsUserUtils.java
@@ -0,0 +1,53 @@
+package org.argeo.osgi.useradmin;
+
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.security.NoSuchAlgorithmException;
+import java.security.URIParameter;
+
+import javax.security.auth.Subject;
+import javax.security.auth.login.Configuration;
+import javax.security.auth.login.LoginContext;
+import javax.security.auth.login.LoginException;
+
+public class OsUserUtils {
+	private static String LOGIN_CONTEXT_USER_NIX = "USER_NIX";
+	private static String LOGIN_CONTEXT_USER_NT = "USER_NT";
+
+	public static String getOsUsername() {
+		return System.getProperty("user.name");
+	}
+
+	public static LoginContext loginAsSystemUser(Subject subject) {
+		try {
+			URL jaasConfigurationUrl = OsUserUtils.class.getClassLoader()
+					.getResource("org/argeo/osgi/useradmin/jaas-os.cfg");
+			URIParameter uriParameter = new URIParameter(jaasConfigurationUrl.toURI());
+			Configuration jaasConfiguration = Configuration.getInstance("JavaLoginConfig", uriParameter);
+			LoginContext lc = new LoginContext(isWindows() ? LOGIN_CONTEXT_USER_NT : LOGIN_CONTEXT_USER_NIX, subject,
+					null, jaasConfiguration);
+			lc.login();
+			return lc;
+		} catch (URISyntaxException | NoSuchAlgorithmException | LoginException e) {
+			throw new RuntimeException("Cannot login as system user", e);
+		}
+	}
+
+	public static void main(String args[]) {
+		Subject subject = new Subject();
+		LoginContext loginContext = loginAsSystemUser(subject);
+		System.out.println(subject);
+		try {
+			loginContext.logout();
+		} catch (LoginException e) {
+			// silent
+		}
+	}
+
+	private static boolean isWindows() {
+		return System.getProperty("os.name").startsWith("Windows");
+	}
+
+	private OsUserUtils() {
+	}
+}