From 3e3581286bdf064cabb46b2c30bca73e6a78ea58 Mon Sep 17 00:00:00 2001
From: James Moger <james.moger@gitblit.com>
Date: Fri, 25 Apr 2014 14:48:29 -0400
Subject: [PATCH] Merged #50 "Prohibit creation and storage of empty ssh keys"

---
 src/main/java/com/gitblit/transport/ssh/keys/KeysDispatcher.java |   64 ++++++++++++++++++++++++++++---
 1 files changed, 57 insertions(+), 7 deletions(-)

diff --git a/src/main/java/com/gitblit/transport/ssh/keys/KeysDispatcher.java b/src/main/java/com/gitblit/transport/ssh/keys/KeysDispatcher.java
index 3f58146..da58584 100644
--- a/src/main/java/com/gitblit/transport/ssh/keys/KeysDispatcher.java
+++ b/src/main/java/com/gitblit/transport/ssh/keys/KeysDispatcher.java
@@ -25,7 +25,6 @@
 import org.slf4j.LoggerFactory;
 
 import com.gitblit.Constants.AccessPermission;
-import com.gitblit.models.UserModel;
 import com.gitblit.transport.ssh.IPublicKeyManager;
 import com.gitblit.transport.ssh.SshKey;
 import com.gitblit.transport.ssh.commands.CommandMetaData;
@@ -47,12 +46,13 @@
 public class KeysDispatcher extends DispatchCommand {
 
 	@Override
-	protected void setup(UserModel user) {
-		register(user, AddKey.class);
-		register(user, RemoveKey.class);
-		register(user, ListKeys.class);
-		register(user, WhichKey.class);
-		register(user, CommentKey.class);
+	protected void setup() {
+		register(AddKey.class);
+		register(RemoveKey.class);
+		register(ListKeys.class);
+		register(WhichKey.class);
+		register(CommentKey.class);
+		register(PermissionKey.class);
 	}
 
 	@CommandMetaData(name = "add", description = "Add an SSH public key to your account")
@@ -79,8 +79,21 @@
 		public void run() throws IOException, Failure {
 			String username = getContext().getClient().getUsername();
 			List<String> keys = readKeys(addKeys);
+			if (keys.isEmpty()) {
+				throw new UnloggedFailure("No public keys were read from STDIN!");
+			}
 			for (String key : keys) {
 				SshKey sshKey = parseKey(key);
+				try {
+					// this method parses the rawdata and produces a public key
+					// if it fails it will throw a Buffer.BufferException
+					// the null check is a QC verification on top of that
+					if (sshKey.getPublicKey() == null) {
+						throw new RuntimeException();
+					}
+				} catch (RuntimeException e) {
+					throw new UnloggedFailure("The data read from SDTIN can not be parsed as an SSH public key!");
+				}
 				if (!StringUtils.isEmpty(permission)) {
 					AccessPermission ap = AccessPermission.fromCode(permission);
 					if (ap.exceeds(AccessPermission.NONE)) {
@@ -265,4 +278,41 @@
 		}
 
 	}
+
+	@CommandMetaData(name = "permission", description = "Set the permission of an SSH public key")
+	@UsageExample(syntax = "${cmd} 3 RW", description = "Set the permission for key #3 to PUSH (PW)")
+	public static class PermissionKey extends SshCommand {
+
+		@Argument(index = 0, metaVar = "INDEX", usage = "the key index", required = true)
+		private int index;
+
+		@Argument(index = 1, metaVar = "PERMISSION", usage = "the new permission", required = true)
+		private String value;
+
+		@Override
+		public void run() throws Failure {
+			final String username = getContext().getClient().getUsername();
+			IPublicKeyManager keyManager = getContext().getGitblit().getPublicKeyManager();
+			List<SshKey> keys = keyManager.getKeys(username);
+			if (index > keys.size()) {
+				throw new UnloggedFailure(1,  "Invalid key index!");
+			}
+
+			SshKey key = keys.get(index - 1);
+			AccessPermission permission = AccessPermission.fromCode(value);
+			if (permission.exceeds(AccessPermission.NONE)) {
+				try {
+					key.setPermission(permission);
+				} catch (IllegalArgumentException e) {
+					throw new Failure(1, e.getMessage());
+				}
+			}
+			if (keyManager.addKey(username, key)) {
+				stdout.println(String.format("Updated the permission for key #%d.", index));
+			} else {
+				throw new Failure(1, String.format("Failed to update the comment for key #%d!", index));
+			}
+		}
+
+	}
 }

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