galleryservice.cs

本系统是在asp版《在线文件管理器》的基础上设计制作

//------------------------------------------------------------------------------
// <copyright company="Telligent Systems">
//     Copyright (c) Telligent Systems Corporation.  All rights reserved.
// </copyright> 
//------------------------------------------------------------------------------

using System;
using System.Collections;
using System.Security;
using System.Web.Services;
using System.Web.Services.Protocols;
using CommunityServer.Components;


namespace CommunityServer.Galleries.Components
{
	/// <summary>
	/// Summary description for GalleryService.
	/// </summary>
	[ WebService(Name="GalleryService",
	Description="Community Server :: Photo Posting Web Service",Namespace="http://communityserver.org/gallery/services/posts/")]
	public class GalleryService : CSWebServiceBase
	{
		public GalleryService()
		{
		}

		public struct GalleryPost
		{
			public int PostID;
			public string Subject;
			public string Description;
			public string Filename;
			public byte[] PictureData;
		}

		#region Gallery Post
		#endregion

		#region Service Methods
		//[WebMethod]
		//public GalleryPost AddPicture( byte[] pictureData )
		//{
		//}

		//[WebMethod]
		//public void RemovePicture()
		//{
		//}

		[WebMethod]
		[SoapHeader("Credentials")]
		public GalleryPost[] GetPictures()
		{
			GalleryThreadQuery query = new GalleryThreadQuery();
			query.SectionID = currentGallery.SectionID;
			query.PageSize = 100;
			ArrayList pictures = Pictures.GetPictures(query).Threads;
			GalleryPost[] posts = new GalleryPost[pictures.Count];

			for(int i = 0 ; i < pictures.Count ; i++)
				posts[i] = PictureToGalleryPost((Picture)pictures[i]);

			return posts;
		}

		[WebMethod]
		[SoapHeader("Credentials")]
		public GalleryPost GetPicture(int pictureID )
		{
            Picture picture = Pictures.GetPicture(pictureID);
			return PictureToGalleryPost(picture);
		}
		#endregion

		#region Protected Methods
		protected override void AllocateSection() {


			if(Globals.IsNullorEmpty(Credentials.SectionName))
				throw new SecurityException("Invalid (or unsupplied) Blogname");


			ArrayList galleries = Galleries.GetGalleries();
			

			foreach( Gallery gallery in galleries ) {
				if( gallery.Name == Credentials.SectionName ) {
					currentGallery = gallery;
					break;
				}
			}

			if(currentGallery == null)
				throw new Exception("The requested gallery does not exist");

			Permissions.AccessCheck(currentGallery,Permission.Post,CurrentUser);
			
			return;
		}

		#endregion

		#region Private Methods

		private GalleryPost PictureToGalleryPost(Picture picture)
		{
			PostAttachment pictureData = Pictures.GetPictureData(picture.PostID);
			GalleryPost post = new GalleryPost();

			post.PostID = picture.PostID;
			post.Subject = picture.Subject;
			post.Description = picture.FormattedBody;
			post.Filename = pictureData.FileName;
			post.PictureData = pictureData.Content;

			return post;
		}
		
		#endregion

		#region Private Data
		protected Gallery currentGallery = null;
		#endregion
	}
}