From 92d7dd4781bdf7c4134cd6fdbfd6f6915919545b Mon Sep 17 00:00:00 2001
From: Bjoern Schiessle <bjoern@schiessle.org>
Date: Tue, 24 Jan 2017 13:24:46 +0100
Subject: [PATCH] allow editing single files shared as public link

Signed-off-by: Bjoern Schiessle <bjoern@schiessle.org>
---
 .../lib/Controller/ShareAPIController.php     |  1 +
 core/js/sharedialoglinkshareview.js           | 39 ++++++++++++++++++-
 core/js/shareitemmodel.js                     | 16 ++++++++
 3 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/apps/files_sharing/lib/Controller/ShareAPIController.php b/apps/files_sharing/lib/Controller/ShareAPIController.php
index ccd0e3aa31..6181cde6fe 100644
--- a/apps/files_sharing/lib/Controller/ShareAPIController.php
+++ b/apps/files_sharing/lib/Controller/ShareAPIController.php
@@ -668,6 +668,7 @@ class ShareAPIController extends OCSController {
 					\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE, // legacy
 					\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE, // correct
 					\OCP\Constants::PERMISSION_CREATE, // hidden file list
+					\OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_UPDATE, // allow to edit single files
 				])
 			) {
 				throw new OCSBadRequestException($this->l->t('Can\'t change permissions for public share links'));
diff --git a/core/js/sharedialoglinkshareview.js b/core/js/sharedialoglinkshareview.js
index cb553947de..84a3d18942 100644
--- a/core/js/sharedialoglinkshareview.js
+++ b/core/js/sharedialoglinkshareview.js
@@ -43,6 +43,13 @@
 			'</div>' +
 			'        {{/if}}' +
 			'    {{/if}}' +
+			'     {{#if publicEditing}}' +
+			'<div id="allowPublicEditingWrapper">' +
+			'    <span class="icon-loading-small hidden"></span>' +
+			'    <input type="checkbox" value="1" name="allowPublicEditing" id="sharingDialogAllowPublicEditing-{{cid}}" class="checkbox publicEditingCheckbox" {{{publicEditingChecked}}} />' +
+			'<label for="sharingDialogAllowPublicEditing-{{cid}}">{{publicEditingLabel}}</label>' +
+			'</div>' +
+			'    {{/if}}' +
 			'    {{#if showPasswordCheckBox}}' +
 			'<input type="checkbox" name="showPassword" id="showPassword-{{cid}}" class="checkbox showPasswordCheckbox" {{#if isPasswordSet}}checked="checked"{{/if}} value="1" />' +
 			'<label for="showPassword-{{cid}}">{{enablePasswordLabel}}</label>' +
@@ -87,6 +94,7 @@
 			'click .linkCheckbox': 'onLinkCheckBoxChange',
 			'click .linkText': 'onLinkTextClick',
 			'change .publicUploadCheckbox': 'onAllowPublicUploadChange',
+			'change .publicEditingCheckbox': 'onAllowPublicEditingChange',
 			'change .hideFileListCheckbox': 'onHideFileListChange',
 			'click .showPasswordCheckbox': 'onShowPasswordClick'
 		},
@@ -128,7 +136,8 @@
 				'onLinkTextClick',
 				'onShowPasswordClick',
 				'onHideFileListChange',
-				'onAllowPublicUploadChange'
+				'onAllowPublicUploadChange',
+				'onAllowPublicEditingChange'
 			);
 
 			var clipboard = new Clipboard('.clipboardButton');
@@ -266,6 +275,20 @@
 			});
 		},
 
+		onAllowPublicEditingChange: function() {
+			var $checkbox = this.$('.publicEditingCheckbox');
+			$checkbox.siblings('.icon-loading-small').removeClass('hidden').addClass('inlineblock');
+
+			var permissions = OC.PERMISSION_READ;
+			if($checkbox.is(':checked')) {
+				permissions = OC.PERMISSION_UPDATE | OC.PERMISSION_READ;
+			}
+
+			this.model.saveLinkShare({
+				permissions: permissions
+			});
+		},
+
 		onHideFileListChange: function () {
 			var $checkbox = this.$('.hideFileListCheckbox');
 			$checkbox.siblings('.icon-loading-small').removeClass('hidden').addClass('inlineblock');
@@ -307,6 +330,12 @@
 				publicUploadChecked = 'checked="checked"';
 			}
 
+			var publicEditingChecked = '';
+			if(this.model.isPublicEditingAllowed()) {
+				publicEditingChecked = 'checked="checked"';
+			}
+
+
 			var hideFileList = publicUploadChecked;
 
 			var hideFileListChecked = '';
@@ -320,6 +349,11 @@
 				&& (   !this.configModel.get('enforcePasswordForPublicLink')
 					|| !this.model.get('linkShare').password);
 
+			var publicEditable =
+				!this.model.isFolder()
+				&& isLinkShare
+				&& this.model.updatePermissionPossible();
+
 			this.$el.html(linkShareTemplate({
 				cid: this.cid,
 				shareAllowed: true,
@@ -337,6 +371,9 @@
 				publicUploadChecked: publicUploadChecked,
 				hideFileListChecked: hideFileListChecked,
 				publicUploadLabel: t('core', 'Allow upload and editing'),
+				publicEditing: publicEditable,
+				publicEditingChecked: publicEditingChecked,
+				publicEditingLabel: t('core', 'Allow editing'),
 				hideFileListLabel: t('core', 'File drop (upload only)'),
 				mailPrivatePlaceholder: t('core', 'Email link to person'),
 				mailButtonText: t('core', 'Send')
diff --git a/core/js/shareitemmodel.js b/core/js/shareitemmodel.js
index 9b10f067af..ae4c07e3f4 100644
--- a/core/js/shareitemmodel.js
+++ b/core/js/shareitemmodel.js
@@ -272,6 +272,10 @@
 			return this.get('allowPublicUploadStatus');
 		},
 
+		isPublicEditingAllowed: function() {
+			return this.get('allowPublicEditingStatus');
+		},
+
 		/**
 		 * @returns {boolean}
 		 */
@@ -679,6 +683,17 @@
 				});
 			}
 
+			var allowPublicEditingStatus = true;
+			if(!_.isUndefined(data.shares)) {
+				$.each(data.shares, function (key, value) {
+					if (value.share_type === OC.Share.SHARE_TYPE_LINK) {
+						allowPublicEditingStatus = (value.permissions & OC.PERMISSION_UPDATE) ? true : false;
+						return true;
+					}
+				});
+			}
+
+
 			var hideFileListStatus = false;
 			if(!_.isUndefined(data.shares)) {
 				$.each(data.shares, function (key, value) {
@@ -762,6 +777,7 @@
 				linkShare: linkShare,
 				permissions: permissions,
 				allowPublicUploadStatus: allowPublicUploadStatus,
+				allowPublicEditingStatus: allowPublicEditingStatus,
 				hideFileListStatus: hideFileListStatus
 			};
 		},