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13e578b1 FT |
1 | package dolda.jsvc.scgi; |
2 | ||
3 | import java.io.*; | |
4 | import java.net.*; | |
5 | import java.util.*; | |
6 | import dolda.jsvc.*; | |
7 | import dolda.jsvc.util.*; | |
8 | ||
9 | public class ScgiRequest extends ResponseBuffer { | |
10 | final Socket sk; | |
11 | private final Map<String, String> environ; | |
12 | private final InputStream in; | |
13 | private final String method, path; | |
14 | private final URL url, context; | |
15 | private MultiMap<String, String> params = null; | |
16 | private MultiMap<String, String> inhead = new HeaderTreeMap(); | |
17 | ||
18 | public ScgiRequest(Socket sk, Map<String, String> environ) throws IOException { | |
19 | this.sk = sk; | |
20 | this.environ = environ; | |
21 | for(Map.Entry<String, String> var : environ.entrySet()) { | |
22 | String k = var.getKey(); | |
23 | if((k.length() > 5) && k.substring(0, 5).equals("HTTP_")) { | |
24 | StringBuilder buf = new StringBuilder(); | |
25 | boolean f = true; | |
26 | for(int i = 5; i < k.length(); i++) { | |
27 | char c = k.charAt(i); | |
28 | if(c == '_') { | |
29 | buf.append('-'); | |
30 | f = true; | |
31 | } else if(f) { | |
32 | buf.append(Character.toUpperCase(c)); | |
33 | f = false; | |
34 | } else { | |
35 | buf.append(Character.toLowerCase(c)); | |
36 | } | |
37 | } | |
38 | inhead.add(buf.toString(), var.getValue()); | |
39 | } | |
40 | } | |
41 | long len; | |
42 | { | |
43 | String h = environ.get("CONTENT_LENGTH"); | |
44 | if(h == null) { | |
45 | len = 0; | |
46 | } else { | |
47 | try { | |
48 | len = Long.parseLong(h); | |
49 | } catch(NumberFormatException e) { | |
50 | throw(new InvalidRequestException("Invalid Content-Length header: " + h)); | |
51 | } | |
52 | } | |
53 | } | |
54 | this.in = new LimitInputStream(sk.getInputStream(), len); | |
55 | path = environ.get("PATH_INFO"); | |
56 | if(path == null) | |
57 | throw(new InvalidRequestException("Missing PATH_INFO")); | |
58 | method = environ.get("REQUEST_METHOD"); | |
59 | if(method == null) | |
60 | throw(new InvalidRequestException("Missing REQUEST_METHOD")); | |
61 | { | |
62 | /* Ewwww, this is disgusting! */ | |
63 | String scheme = "http"; | |
64 | if(environ.get("HTTPS") != null) | |
65 | scheme = "https"; | |
66 | int port = -1; | |
67 | String host = environ.get("HTTP_HOST"); | |
68 | if((host == null) || (host.length() < 1)) { | |
69 | if((host = environ.get("SERVER_NAME")) == null) | |
70 | throw(new InvalidRequestException("Both HTTP_HOST and SERVER name are missing")); | |
71 | String portnum = environ.get("SERVER_PORT"); | |
72 | if(portnum == null) | |
73 | throw(new InvalidRequestException("Missing SERVER_PORT")); | |
74 | try { | |
75 | port = Integer.parseInt(portnum); | |
76 | } catch(NumberFormatException e) { | |
77 | throw(new InvalidRequestException("Bad SERVER_PORT: " + portnum)); | |
78 | } | |
79 | if((port == 80) && scheme.equals("http")) | |
80 | port = -1; | |
81 | else if((port == 443) && scheme.equals("https")) | |
82 | port = -1; | |
83 | } else { | |
84 | int p; | |
85 | if((host.charAt(0) == '[') && ((p = host.indexOf(']', 1)) > 1)) { | |
86 | String newhost = host.substring(1, p); | |
87 | if((p = host.indexOf(':', p + 1)) >= 0) { | |
88 | try { | |
89 | port = Integer.parseInt(host.substring(p + 1)); | |
90 | } catch(NumberFormatException e) {} | |
91 | } | |
92 | host = newhost; | |
93 | } else if((p = host.indexOf(':')) >= 0) { | |
94 | try { | |
95 | port = Integer.parseInt(host.substring(p + 1)); | |
96 | host = host.substring(0, p); | |
97 | } catch(NumberFormatException e) {} | |
98 | } | |
99 | } | |
100 | String nm = environ.get("SCRIPT_NAME"); | |
101 | if(nm == null) | |
102 | throw(new InvalidRequestException("Missing SCRIPT_NAME")); | |
103 | String q = environ.get("QUERY_STRING"); | |
104 | if(q != null) | |
105 | q = "?" + q; | |
106 | else | |
107 | q = ""; | |
108 | try { | |
109 | url = new URL(scheme, host, port, nm + path + q); | |
110 | if(nm.charAt(nm.length() - 1) != '/') | |
111 | nm += "/"; /* XXX? */ | |
112 | context = new URL(scheme, host, port, nm); | |
113 | } catch(MalformedURLException e) { | |
114 | throw(new Error(e)); | |
115 | } | |
116 | } | |
117 | } | |
118 | ||
119 | public MultiMap<String, String> inheaders() { | |
120 | return(inhead); | |
121 | } | |
122 | ||
123 | public ServerContext ctx() { | |
124 | return(ThreadContext.current().server()); | |
125 | } | |
126 | ||
127 | public InputStream input() { | |
128 | return(in); | |
129 | } | |
130 | ||
131 | public URL url() { | |
132 | return(url); | |
133 | } | |
134 | ||
135 | public URL rooturl() { | |
136 | return(context); | |
137 | } | |
138 | ||
139 | public String path() { | |
140 | return(path); | |
141 | } | |
142 | ||
143 | public String method() { | |
144 | return(method); | |
145 | } | |
146 | ||
147 | public MultiMap<String, String> params() { | |
148 | if(params == null) | |
149 | params = Params.stdparams(this); | |
150 | return(params); | |
151 | } | |
152 | ||
153 | public SocketAddress localaddr() { | |
154 | String portnum = environ.get("SERVER_PORT"); | |
155 | int port = -1; | |
156 | try { | |
157 | if(portnum != null) | |
158 | port = Integer.parseInt(portnum); | |
159 | } catch(NumberFormatException e) {} | |
160 | if(port < 0) | |
161 | return(null); /* XXX? */ | |
162 | String addr; | |
163 | addr = environ.get("X_ASH_SERVER_ADDRESS"); | |
164 | if(addr == null) | |
165 | return(new InetSocketAddress(port)); /* XXX? */ | |
166 | else | |
167 | return(new InetSocketAddress(addr, port)); | |
168 | } | |
169 | ||
170 | public SocketAddress remoteaddr() { | |
171 | String addr; | |
172 | String portnum; | |
173 | addr = environ.get("REMOTE_ADDR"); | |
174 | portnum = environ.get("X_ASH_PORT"); | |
175 | int port = -1; | |
176 | try { | |
177 | if(portnum != null) | |
178 | port = Integer.parseInt(portnum); | |
179 | } catch(NumberFormatException e) {} | |
180 | if((addr != null) && (port >= 0)) | |
181 | return(new InetSocketAddress(addr, port)); | |
182 | return(null); /* XXX? */ | |
183 | } | |
184 | ||
185 | private void checkstring(String s) { | |
186 | for(int i = 0; i < s.length(); i++) { | |
187 | char c = s.charAt(i); | |
188 | if((c < 32) || (c >= 128)) | |
189 | throw(new RuntimeException("Invalid header string: " + s)); | |
190 | } | |
191 | } | |
192 | ||
193 | protected void backflush() throws IOException { | |
194 | Writer out = new OutputStreamWriter(realoutput(), Misc.ascii); | |
195 | out.write(String.format("Status: %d %s\n", respcode, resptext)); | |
196 | for(Map.Entry<String, String> e : outheaders().entrySet()) { | |
197 | String k = e.getKey(); | |
198 | String v = e.getValue(); | |
199 | checkstring(k); | |
200 | checkstring(v); | |
201 | out.write(String.format("%s: %s\n", k, v)); | |
202 | } | |
203 | out.write("\n"); | |
204 | out.flush(); | |
205 | } | |
206 | ||
207 | protected OutputStream realoutput() { | |
208 | try { | |
209 | return(sk.getOutputStream()); | |
210 | } catch(IOException e) { | |
211 | /* It is not obvious why this would happen, so I'll wait | |
212 | * until I know whatever might happen to try and implement | |
213 | * meaningful behavior. */ | |
214 | throw(new RuntimeException(e)); | |
215 | } | |
216 | } | |
217 | } |