SharePoint 列表权限控制

一提到sharepoint 我相信权限控制一定会是一个很重要的话题，尤其是对列表的权限控制，创建、修改、查看权限。其实网上这方面的资料已经很多了，尤其是以下2篇文章，后来索性把CodeArt_PermissionEx的源代码下载下来，然后仔细阅读了以下。

利用开源SharePoint Permission Extension插件对SharePoint 的列表进行权限控制！

通过代码解决SharePoint列表视图权限分配问题

要想完全明白源码设计的原理 建议大家先阅读再议WSS RenderingTemplate 对sharepoint模板覆盖有一个简单的了解。我把CodeArt_PermissionEx仔细阅读了一下并且修改了里面的一些代码（个人觉得原作者C#基本功一般，sharepoint方面还是不错，我这里修改的是VS2013版的源码）。修改后部署到sharepoint2013上如图：

内容内型权限设计如图：

这里的PersonType是一个自定义内容内型，每一个内型这里有一个人员和组的权限控制，主要控制user是否可以新建记录，比如user不在PersonType内容内型人员和组里面，那么这个user将不能创建记录,没有权限的user进入后看到的结果如图：

看到这里的新建项目变为不可用了。

这里说说查找权限的方式，首先我们需要的我们的设置保存起来，

1）根据我们的类容类型来找权限设置，如果没有任何权限设置那么我们就直接返回true；

2）如果当前用户是管理员用户直接返回true；

3）在指定的人员里面查找当前user是否存在，存在返回true；

4）指定的组里面是否包含当前user，存在返回true；否则返回false

相关代码如下：

 public bool CheckRight(SPUser user, string contentTypeName)
        {
            ContentTypeCreateSetting set = this.GetContentTypeCreateSetting(contentTypeName);

            if (set == null)
                return true;

            return set.CanCreate(user);
        }
 public bool CanCreate(SPUser currentUser)
        {
            if (currentUser != null && currentUser.IsSiteAdmin) return true;

            if (String.IsNullOrEmpty(this.SpecialAccounts) && String.IsNullOrEmpty(this.SpecialGroups))
                return true;

            if (currentUser == null)
            {
                return false;
            }

            bool inAccounts = this.IsInSpecialAccounts(currentUser.LoginName);

            if (inAccounts)
                return true;

            return this.IsInSpecialGroups(currentUser);
        }
    }

主要原理是新建列表数据默认用到的是NewMenu类，这里我们开发一个带有权限控制的子类NewMenuWithPermission，主要代码如下：

   public class NewMenuWithPermission : NewMenu
    {        

        private ListContentTypesCreateSetting _setting;
        bool _settingExist = true ;

        bool UserHaveRight(string cName)
        {
            if (!_settingExist)
                return true;

            if (_setting == null)
            {
                _setting = ListContentTypesCreateSetting.GeSetting(base.List);
                _settingExist = _setting != null;
            }

            if (_setting == null)
                return true ;

            return _setting.CheckRight(SPContext.Current.Web.CurrentUser, cName);

            //return true;
        }


        public override MenuItemTemplate AddMenuItem(string id, string displayName, string imageUrl, string description, string navigateUrl, string onClickScript)
        {          
            MenuItemTemplate m = base.AddMenuItem(id, displayName, imageUrl, description, navigateUrl, onClickScript);

            m.Visible = this.UserHaveRight(displayName);

            return m;
        }

         
    }

如何让sharepoint使用我们这个NewMenuWithPermission类，这里我们需要覆盖sharepoint的DocumentLibraryViewToolBar 和 ViewToolBar模板，相关代码如下：

<SharePoint:RenderingTemplate ID="DocumentLibraryViewToolBar" runat="server">
    <Template>
        <wssuc:ToolBar CssClass="ms-menutoolbar" EnableViewState="false" id="toolBarTbl" ButtonSeparator="<img src='/_layouts/15/images/blank.gif' alt=''>" RightButtonSeparator="  " runat="server">
            <Template_Buttons>
            <codeart:NewMenuWithPermission  runat="server" AccessKey="<%$Resources:wss,tb_NewMenu_AK%>"/>
                <%--<SharePoint:NewMenu ID="NewMenu1" Visible="false" AccessKey="<%$Resources:wss,tb_NewMenu_AK%>" runat="server"/>--%>
                <SharePoint:UploadMenu ID="UploadMenu1" AccessKey="<%$Resources:wss,tb_UploadMenu_AK%>" runat="server"/>
                <SharePoint:ActionsMenu ID="ActionsMenu1" AccessKey="<%$Resources:wss,tb_ActionsMenu_AK%>" runat="server"/>
                <SharePoint:SettingsMenu ID="SettingsMenu1" AccessKey="<%$Resources:wss,tb_SettingsMenu_AK%>" runat="server"/>
            </Template_Buttons>
            <Template_RightButtons>
                  <SharePoint:PagingButton ID="PagingButton1" runat="server"/>
                  <SharePoint:ListViewSelector ID="ListViewSelector1" runat="server"/>
            </Template_RightButtons>
        </wssuc:ToolBar>
    </Template>
</SharePoint:RenderingTemplate>

<SharePoint:RenderingTemplate ID="ViewToolBar" runat="server">
    <Template>
        <wssuc:ToolBar CssClass="ms-menutoolbar" EnableViewState="false" id="toolBarTbl" ButtonSeparator="<img src='/_layouts/15/images/blank.gif' alt=''>" RightButtonSeparator="  " runat="server">
            <Template_Buttons>
                <codeart:NewMenuWithPermission  runat="server" AccessKey="<%$Resources:wss,tb_NewMenu_AK%>"/>
                <%--<SharePoint:NewMenu AccessKey="<%$Resources:wss,tb_NewMenu_AK%>" runat="server" />--%>
                <SharePoint:ActionsMenu AccessKey="<%$Resources:wss,tb_ActionsMenu_AK%>" runat="server" />
                <SharePoint:SettingsMenu AccessKey="<%$Resources:wss,tb_SettingsMenu_AK%>" runat="server" />
            </Template_Buttons>
            <Template_RightButtons>
                  <SharePoint:PagingButton runat="server"/>
                  <SharePoint:ListViewSelector runat="server"/>
            </Template_RightButtons>
        </wssuc:ToolBar>
    </Template>
</SharePoint:RenderingTemplate>

现在我们来查看view的权限设计

没有权限的人访问时运行结果如下：

这里的view权限查找方式和控制方式与上面内容内型权限控制都是一样的，下面提到的字段权限设计也是一样的原理。只是这里我们需要开发一个PermissionListViewSelector类来扩展默认的ViewSelectorMenu类，实现代码如下：

 public class PermissionListViewSelector : ViewSelectorMenu // Microsoft.SharePoint.WebControls.ListViewSelector
    {
        protected override void OnPreRender(EventArgs e)
        {
            base.OnPreRender(e);

            //if (!this.Context.User.Identity.IsAuthenticated)//for anonymous access
            //{
            //    return;
            //}

            var currentUser = base.Web.CurrentUser;

            if (currentUser != null && currentUser.IsSiteAdmin)
            {
                return;
            }

            SPList curList = SPContext.Current.List;

            ListViewPermissionSetting listSetting = ListViewPermissionSetting.GetListSetting(curList);
            if (listSetting == null)
            {
                return;
            }

            if (SPContext.Current.ViewContext == null || SPContext.Current.ViewContext.View == null)
                return;

            SPView currentView = SPContext.Current.ViewContext.View;

            ViewPermission viewSetting = listSetting.GetByViewID(currentView.ID);
            if (viewSetting == null)
                return;
         
            if (( viewSetting!= null) && (!(viewSetting.CanDisplay(currentUser))))
            {
                //如果用户没有权限访问当前视图，那么需要计算其有权限访问的试图

                if (currentView.DefaultView) //如果访问默认视图而没有权限时，自动转向一个有权限的试图
                {
                    Guid id = listSetting.GetCanDisplayView(currentUser);
                    if (id == Guid.Empty)
                    {
                        SPUtility.TransferToErrorPage(Util.GetResource("Msg_NoViewRight"));
                        return;
                    }
                    else
                    {
                        SPView view = curList.Views[id];
                        SPUtility.Redirect( base.Web.Url +"/"+ view.Url, SPRedirectFlags.Default, this.Context);
                        return;
                    }
                }
                SPUtility.TransferToErrorPage(Util.GetResource("Msg_NoViewRight"));
            }
            
            //NND, 在2010的07UI模式下这样设置不起作用。 
            foreach (Control item in base.MenuTemplateControl.Controls)
            {
                if ((item is MenuItemTemplate))
                {
                    MenuItemTemplate menuItem = (MenuItemTemplate)item;

                    if (menuItem.PermissionsString != "ViewListItems") //修改视图和创建视图菜单
                    {
                        menuItem.Visible = false;
                        continue;
                    }

                    try
                    {
                        SPView tempView = curList.Views[menuItem.Text];

                        viewSetting = listSetting.GetByViewName(menuItem.Text);

                        if (viewSetting == null)
                            continue;

                        item.Visible = viewSetting.CanDisplay(currentUser);
                    }
                    catch (ArgumentException)
                    {
                    }
                }
            }
        }
 
     
    }

如何让sharepoint默认使用我们这个PermissionListViewSelector类了，同样我们需要修改ViewSelector模板

<SharePoint:RenderingTemplate ID="ViewSelector" runat="server">
    <Template>
        <table border=0 cellpadding=0 cellspacing=0 style='margin-right: 4px'>
        <tr>
           <td nowrap class="ms-listheaderlabel"><SharePoint:EncodedLiteral ID="EncodedLiteral1" runat="server" text="<%$Resources:wss,view_selector_view%>" EncodeMethod='HtmlEncode'/> </td>
           <td nowrap class="ms-viewselector" id="onetViewSelector" onmouseover="this.className='ms-viewselectorhover'" onmouseout="this.className='ms-viewselector'" runat="server">
                <codeArt:PermissionListViewSelector MenuAlignment="Right" AlignToParent="true" runat="server" id="ViewSelectorMenu" />
            </td>
        </tr>
        </table>
    </Template>
</SharePoint:RenderingTemplate>

 最后我们来看看字段权限设置

这里权限设置分为编辑和查看权限，没有编辑权限的用户如下图：

结合权限设置的那张图看一看，这里只有Middle Name字段可以编辑，其他所有字段都不能编辑，Middle Name是允许”ALL User“编辑的，所以这里user可以编辑。查看权限也是一样的。

 这里我们需要开发一个EditControlListFieldIterator类来扩展默认的ListFieldIterator类，如何让sharepoint来使用我们的这些类，我们需要修改sharepoint的ListForm和FileFormFields模板，相关代码如下：

public class EditControlListFieldIterator : Microsoft.SharePoint.WebControls.ListFieldIterator
    {
        protected override void CreateChildControls()
        {
            //if (this.ControlMode == SPControlMode.Display)
            //{
            //    base.CreateChildControls();
            //    return;
            //}

            SPUser currentUser = SPContext.Current.Web.CurrentUser;

            if (currentUser != null && currentUser.IsSiteAdmin)
            {
                base.CreateChildControls();
                return;
            }

            ListFieldPermissionSetting listSetting = ListFieldPermissionSetting.GetListSetting(this.List);
            if (listSetting == null || listSetting.Count == 0)
            {
                base.CreateChildControls();
                return;
            }

            //base.CreateChildControls();
            this.Controls.Clear();
            if (this.ControlTemplate == null)
            {
                throw new ArgumentException("Could not find ListFieldIterator control template.");
            }

            Type t = typeof(TemplateContainer);

            PropertyInfo ControlModeProp = t.GetProperty("ControlMode", BindingFlags.Instance | BindingFlags.NonPublic);
            PropertyInfo FieldNameProp = t.GetProperty("FieldName", BindingFlags.Instance | BindingFlags.NonPublic);

            SPUser author = null;

            if (this.ControlMode == SPControlMode.New)
            {
                author = base.Web.CurrentUser;

                for (int i = 0; i < base.Fields.Count; i++)
                {
                    SPField field = base.Fields[i];

                    if (!this.IsFieldExcluded(field))
                    {
                        FieldPermission set = listSetting.GetByFieldName(field.InternalName);

                        if (set != null && !set.CanEdit(currentUser, author))
                        {
                            continue;
                        }

                        TemplateContainer child = new TemplateContainer();
                        this.Controls.Add(child);
                        FieldNameProp.SetValue(child, field.InternalName, null);
                        this.ControlTemplate.InstantiateIn(child);
                    }
                }

            }
            else
            {
                SPFieldUserValue authorFieldValue = new SPFieldUserValue(base.Web, "" + this.ListItem["Author"]);
                author = authorFieldValue.User;            

                for (int i = 0; i < base.Fields.Count; i++)
                {
                    SPField field = base.Fields[i];

                    if (!this.IsFieldExcluded(field))
                    {
                        SPControlMode thisMode = this.ControlMode;

                        FieldPermission set = listSetting.GetByFieldName(field.InternalName);

                        if (set != null )
                        {
                            if (!set.CanEdit(currentUser, author))
                            {
                                if (set.CanDisplay(currentUser, author))
                                    thisMode = SPControlMode.Display;
                                else
                                    continue;
                            }                                
                        }

                        TemplateContainer child = new TemplateContainer();
                        this.Controls.Add(child);
                        FieldNameProp.SetValue(child, field.InternalName, null);
                        ControlModeProp.SetValue(child, thisMode , null);
                        this.ControlTemplate.InstantiateIn(child);

                    }
                }

            }

        }


    }

<SharePoint:RenderingTemplate ID="ListForm" runat="server">
    <Template>
        <SPAN id='part1'>
        
            <SharePoint:InformationBar runat="server"/>
            <wssuc:ToolBar CssClass="ms-formtoolbar" id="toolBarTbltop" RightButtonSeparator=" " runat="server">
                    <Template_RightButtons>
                        <SharePoint:NextPageButton runat="server"/>
                        <SharePoint:SaveButton runat="server"/>
                        <SharePoint:GoBackButton runat="server"/>
                    </Template_RightButtons>
            </wssuc:ToolBar>
            <SharePoint:FormToolBar runat="server"/>
            <TABLE class="ms-formtable" style="margin-top: 8px;" border=0 cellpadding=0 cellspacing=0 width=100%>
            <SharePoint:ChangeContentType runat="server"/>
            <SharePoint:FolderFormFields runat="server"/>            
 
            <codeArt:EditControlListFieldIterator runat="server"/>

            <SharePoint:ApprovalStatus runat="server"/>
            <SharePoint:FormComponent TemplateName="AttachmentRows" runat="server"/>
            </TABLE>
            <table cellpadding=0 cellspacing=0 width=100%><tr><td class="ms-formline"><IMG SRC="/_layouts/15/images/blank.gif" width=1 height=1 alt=""></td></tr></table>
            <TABLE cellpadding=0 cellspacing=0 width=100% style="padding-top: 7px"><tr><td width=100%>
            <SharePoint:ItemHiddenVersion runat="server"/>
            <SharePoint:ParentInformationField runat="server"/>
            <SharePoint:InitContentType runat="server"/>
            <wssuc:ToolBar CssClass="ms-formtoolbar" id="toolBarTbl" RightButtonSeparator=" " runat="server">
                    <Template_Buttons>
                        <SharePoint:CreatedModifiedInfo runat="server"/>
                    </Template_Buttons>
                    <Template_RightButtons>
                        <SharePoint:SaveButton runat="server"/>
                        <SharePoint:GoBackButton runat="server"/>
                    </Template_RightButtons>
            </wssuc:ToolBar>
            </td></tr></TABLE>
        </SPAN>
 
        <SharePoint:AttachmentUpload runat="server"/>
<hr/>
    </Template>
</SharePoint:RenderingTemplate>

<SharePoint:RenderingTemplate ID="FileFormFields" runat="server">
    <Template>
            <codeArt:EditControlListFieldIterator runat="server"/>
    </Template>
</SharePoint:RenderingTemplate>

 这里我们的权限设置都保存到哪里去了？这里默认是把权限设置的object 序列化为字符串然后保存到一个特定的文档库里面去了的。

看到这个图，我想大家应该知道这里的权限设置时怎么保存的了吧，每个list内容内型权限设置、试图权限设置、字段权限设置分别对应一个文件。

源码下载

为了回报大家，这里特地分享一个知识点；大家在安装sharepoint2013 和 VS2013是 一定要保持语言版本一致，我以前遇到一个 站点模板创建后无法识别的issue，原因就是这2个语言不一致。中文版的sharepoint只能识别2052下的自定义模板，而英文版的VS2013 默认会发布到一个1033的文件夹下，所以中文版的sharepoint2013 默认是不能识别英文版VS2013创建的站点模板。