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-rw-r--r--Common/XmlRpcCS/SimpleHttpRequest.cs204
1 files changed, 204 insertions, 0 deletions
diff --git a/Common/XmlRpcCS/SimpleHttpRequest.cs b/Common/XmlRpcCS/SimpleHttpRequest.cs
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1namespace Nwc.XmlRpc
2{
3 using System;
4 using System.IO;
5 using System.Net.Sockets;
6 using System.Collections;
7
8 ///<summary>Very basic HTTP request handler.</summary>
9 ///<remarks>This class is designed to accept a TcpClient and treat it as an HTTP request.
10 /// It will do some basic header parsing and manage the input and output streams associated
11 /// with the request.</remarks>
12 public class SimpleHttpRequest
13 {
14 private String _httpMethod = null;
15 private String _protocol;
16 private String _filePathFile = null;
17 private String _filePathDir = null;
18 private String __filePath;
19 private TcpClient _client;
20 private StreamReader _input;
21 private StreamWriter _output;
22 private Hashtable _headers;
23
24 /// <summary>A constructor which accepts the TcpClient.</summary>
25 /// <remarks>It creates the associated input and output streams, determines the request type,
26 /// and parses the remaining HTTP header.</remarks>
27 /// <param name="client">The <c>TcpClient</c> associated with the HTTP connection.</param>
28 public SimpleHttpRequest(TcpClient client)
29 {
30 _client = client;
31 _output = new StreamWriter(client.GetStream());
32 _input = new StreamReader(client.GetStream());
33 GetRequestMethod();
34 GetRequestHeaders();
35 }
36
37 /// <summary>The output <c>StreamWriter</c> associated with the request.</summary>
38 public StreamWriter Output
39 {
40 get { return _output; }
41 }
42
43 /// <summary>The input <c>StreamReader</c> associated with the request.</summary>
44 public StreamReader Input
45 {
46 get { return _input; }
47 }
48
49 /// <summary>The <c>TcpClient</c> with the request.</summary>
50 public TcpClient Client
51 {
52 get { return _client; }
53 }
54
55 private String _filePath
56 {
57 get { return __filePath; }
58 set
59 {
60 __filePath = value;
61 _filePathDir = null;
62 _filePathFile = null;
63 }
64 }
65
66 /// <summary>The type of HTTP request (i.e. PUT, GET, etc.).</summary>
67 public String HttpMethod
68 {
69 get { return _httpMethod; }
70 }
71
72 /// <summary>The level of the HTTP protocol.</summary>
73 public String Protocol
74 {
75 get { return _protocol; }
76 }
77
78 /// <summary>The "path" which is part of any HTTP request.</summary>
79 public String FilePath
80 {
81 get { return _filePath; }
82 }
83
84 /// <summary>The file portion of the "path" which is part of any HTTP request.</summary>
85 public String FilePathFile
86 {
87 get
88 {
89 if (_filePathFile != null)
90 return _filePathFile;
91
92 int i = FilePath.LastIndexOf("/");
93
94 if (i == -1)
95 return "";
96
97 i++;
98 _filePathFile = FilePath.Substring(i, FilePath.Length - i);
99 return _filePathFile;
100 }
101 }
102
103 /// <summary>The directory portion of the "path" which is part of any HTTP request.</summary>
104 public String FilePathDir
105 {
106 get
107 {
108 if (_filePathDir != null)
109 return _filePathDir;
110
111 int i = FilePath.LastIndexOf("/");
112
113 if (i == -1)
114 return "";
115
116 i++;
117 _filePathDir = FilePath.Substring(0, i);
118 return _filePathDir;
119 }
120 }
121
122 private void GetRequestMethod()
123 {
124 string req = _input.ReadLine();
125 if (req == null)
126 throw new ApplicationException("Void request.");
127
128 if (0 == String.Compare("GET ", req.Substring(0, 4), true))
129 _httpMethod = "GET";
130 else if (0 == String.Compare("POST ", req.Substring(0, 5), true))
131 _httpMethod = "POST";
132 else
133 throw new InvalidOperationException("Unrecognized method in query: " + req);
134
135 req = req.TrimEnd();
136 int idx = req.IndexOf(' ') + 1;
137 if (idx >= req.Length)
138 throw new ApplicationException("What do you want?");
139
140 string page_protocol = req.Substring(idx);
141 int idx2 = page_protocol.IndexOf(' ');
142 if (idx2 == -1)
143 idx2 = page_protocol.Length;
144
145 _filePath = page_protocol.Substring(0, idx2).Trim();
146 _protocol = page_protocol.Substring(idx2).Trim();
147 }
148
149 private void GetRequestHeaders()
150 {
151 String line;
152 int idx;
153
154 _headers = new Hashtable();
155
156 while ((line = _input.ReadLine()) != "")
157 {
158 if (line == null)
159 {
160 break;
161 }
162
163 idx = line.IndexOf(':');
164 if (idx == -1 || idx == line.Length - 1)
165 {
166 Logger.WriteEntry("Malformed header line: " + line, LogLevel.Information);
167 continue;
168 }
169
170 String key = line.Substring(0, idx);
171 String value = line.Substring(idx + 1);
172
173 try
174 {
175 _headers.Add(key, value);
176 }
177 catch (Exception)
178 {
179 Logger.WriteEntry("Duplicate header key in line: " + line, LogLevel.Information);
180 }
181 }
182 }
183
184 /// <summary>
185 /// Format the object contents into a useful string representation.
186 /// </summary>
187 ///<returns><c>String</c> representation of the <c>SimpleHttpRequest</c> as the <i>HttpMethod FilePath Protocol</i>.</returns>
188 override public String ToString()
189 {
190 return HttpMethod + " " + FilePath + " " + Protocol;
191 }
192
193 /// <summary>
194 /// Close the <c>SimpleHttpRequest</c>. This flushes and closes all associated io streams.
195 /// </summary>
196 public void Close()
197 {
198 _output.Flush();
199 _output.Close();
200 _input.Close();
201 _client.Close();
202 }
203 }
204}
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