basic support for unpublishing individual versions (local only)

lib/index.js

@@ -171,48 +171,44 @@ module.exports = function(config_hash) {
 
 	// publishing a package
 	app.put('/:package/:_rev?/:revision?', can('publish'), media('application/json'), expect_json, function(req, res, next) {
-		if (req.params._rev != null && req.params._rev != '-rev') return next('route');
-		var name = req.params.package;
+		if (req.params._rev != null && req.params._rev != '-rev') return next('route')
+		var name = req.params.package
 
 		if (Object.keys(req.body).length == 1 && utils.is_object(req.body.users)) {
 			return next(new UError({
 				// 501 status is more meaningful, but npm doesn't show error message for 5xx
 				status: 404,
 				msg: 'npm star|unstar calls are not implemented',
-			}));
+			}))
 		}
 
 		try {
-			var metadata = utils.validate_metadata(req.body, name);
+			var metadata = utils.validate_metadata(req.body, name)
 		} catch(err) {
 			return next(new UError({
 				status: 422,
 				msg: 'bad incoming package data',
-			}));
+			}))
 		}
 
 		if (req.params._rev) {
-			return next(new UError({
-				status: 404,
-				msg: 'unimplemented yet, work in progress',
-			}));
-/*			storage.change_package(name, metadata, req.params.revision, function(err) {
-				if (err) return next(err);
-				res.status(201);
+			storage.change_package(name, metadata, req.params.revision, function(err) {
+				if (err) return next(err)
+				res.status(201)
 				return res.send({
 					ok: 'package changed'
-				});
-			});*/
+				})
+			})
 		} else {
 			storage.add_package(name, metadata, function(err) {
-				if (err) return next(err);
+				if (err) return next(err)
 				res.status(201);
 				return res.send({
 					ok: 'created new package'
-				});
-			});
+				})
+			})
 		}
-	});
+	})
 
 	// unpublishing an entire package
 	app.delete('/:package/-rev/*', can('publish'), function(req, res, next) {
@@ -225,6 +221,17 @@ module.exports = function(config_hash) {
 		});
 	});
 
+	// removing a tarball
+	app.delete('/:package/-/:filename/-rev/:revision', can('publish'), function(req, res, next) {
+		storage.remove_tarball(req.params.package, req.params.filename, req.params.revision, function(err) {
+			if (err) return next(err);
+			res.status(201);
+			return res.send({
+				ok: 'tarball removed'
+			});
+		});
+	});
+
 	// uploading package tarball
 	app.put('/:package/-/:filename/*', can('publish'), media('application/octet-stream'), function(req, res, next) {
 		var name = req.params.package;

lib/local-storage.js

@@ -61,6 +61,7 @@ Storage.prototype.add_package = function(name, metadata, callback) {
 
 Storage.prototype.remove_package = function(name, callback) {
 	var self = this
+	self.logger.info({name: name}, 'unpublishing @{name} (all)')
 	self.storage.read_json(name + '/' + info_file, function(err, data) {
 		if (err) {
 			if (err.code === 'ENOENT') {
@@ -215,6 +216,57 @@ Storage.prototype.add_version = function(name, version, metadata, tag, callback)
 	}, callback)
 }
 
+// currently supports unpublishing only
+Storage.prototype.change_package = function(name, metadata, revision, callback) {
+	var self = this
+
+	if (!utils.is_object(metadata.versions) || !utils.is_object(metadata['dist-tags'])) {
+		return callback(new UError({
+			status: 422,
+			msg: 'bad data',
+		}))
+	}
+
+	self.update_package(name, function updater(data, cb) {
+		for (var ver in data.versions) {
+			if (metadata.versions[ver] == null) {
+				self.logger.info({name: name, version: ver}, 'unpublishing @{name}@@{version}')
+				delete data.versions[ver]
+
+				for (var file in data._attachments) {
+					if (data._attachments[file].version === ver) {
+						delete data._attachments[file].version
+					}
+				}
+			}
+		}
+		data['dist-tags'] = metadata['dist-tags']
+		cb()
+	}, function(err) {
+		if (err) return callback(err)
+		callback()
+	})
+}
+
+Storage.prototype.remove_tarball = function(name, filename, revision, callback) {
+	var self = this
+
+	self.update_package(name, function updater(data, cb) {
+		if (data._attachments[filename]) {
+			delete data._attachments[filename]
+			cb()
+		} else {
+			cb(new UError({
+				status: 404,
+				msg: 'no such file available',
+			}))
+		}
+	}, function(err) {
+		if (err) return callback(err)
+		self.storage.unlink(name + '/' + filename, callback)
+	})
+}
+
 Storage.prototype.add_tarball = function(name, filename) {
 	var stream = new mystreams.UploadTarballStream()
 	  , _transform = stream._transform
@@ -411,7 +463,7 @@ Storage.prototype._write_package = function(name, json, callback) {
 	// calculate revision a la couchdb
 	if (typeof(json._rev) !== 'string') json._rev = '0-0000000000000000'
 	var rev = json._rev.split('-')
-	json._rev = ((+rev[0] || 0) + 1) + '-' + crypto.pseudoRandomBytes(16).toString('hex')
+	json._rev = ((+rev[0] || 0) + 1) + '-' + crypto.pseudoRandomBytes(8).toString('hex')
 
 	this.storage.write_json(name + '/' + info_file, json, callback)
 }

lib/storage.js

@@ -132,6 +132,24 @@ Storage.prototype.add_version = function(name, version, metadata, tag, callback)
 	});
 }
 
+//
+// Change an existing package (i.e. unpublish one version)
+//
+// Function changes a package info from local storage and all uplinks with
+// write access.
+//
+// TODO: currently it works only locally
+//
+// TODO: if a package is uploaded to uplink1, but upload to uplink2 fails,
+// we report failure, but package is not removed from uplink1. This might
+// require manual intervention.
+//
+// Used storages: local (write) && uplinks (proxy_publish, write)
+//
+Storage.prototype.change_package = function(name, metadata, revision, callback) {
+	return this.local.change_package(name, metadata, revision, callback)
+}
+
 //
 // Remove a package from a system
 //
@@ -147,7 +165,26 @@ Storage.prototype.add_version = function(name, version, metadata, tag, callback)
 // Used storages: local (write) && uplinks (proxy_publish, write)
 //
 Storage.prototype.remove_package = function(name, callback) {
-	return this.local.remove_package(name, callback);
+	return this.local.remove_package(name, callback)
+}
+
+//
+// Remove a tarball from a system
+//
+// Function removes a tarball from local storage and all uplinks with
+// write access. Tarball in question should not be linked to in any existing
+// versions, i.e. package version should be unpublished first.
+//
+// TODO: currently it works only locally
+//
+// TODO: if a package is uploaded to uplink1, but upload to uplink2 fails,
+// we report failure, but package is not removed from uplink1. This might
+// require manual intervention.
+//
+// Used storages: local (write) && uplinks (proxy_publish, write)
+//
+Storage.prototype.remove_tarball = function(name, filename, revision, callback) {
+	return this.local.remove_tarball(name, filename, revision, callback)
 }
 
 //

lib/utils.js

@@ -10,6 +10,7 @@ module.exports.validate_name = function(name) {
 		name !== encodeURIComponent(name) ||
 		name.toLowerCase() === "node_modules" ||
 		name.toLowerCase() === "__proto__" ||
+		name.toLowerCase() === "package.json" ||
 		name.toLowerCase() === "favicon.ico"
 	) {
 		return false;