30 |
|
|
31 |
PROTOCOL_VERSION = '1.0' |
PROTOCOL_VERSION = '1.0' |
32 |
|
|
33 |
|
CANONICAL_METAVARIABLES = [ |
34 |
|
"AUTH_TYPE", |
35 |
|
"CONTENT_LENGTH", |
36 |
|
"CONTENT_TYPE", |
37 |
|
"GATEWAY_INTERFACE", |
38 |
|
"PATH_INFO", |
39 |
|
"PATH_TRANSLATED", |
40 |
|
"QUERY_STRING", |
41 |
|
"REMOTE_ADDR", |
42 |
|
"REMOTE_HOST", |
43 |
|
"REMOTE_IDENT", |
44 |
|
"REMOTE_USER", |
45 |
|
"REQUEST_METHOD", |
46 |
|
"SCRIPT_NAME", |
47 |
|
"SERVER_NAME", |
48 |
|
"SERVER_PORT", |
49 |
|
"SERVER_PROTOCOL", |
50 |
|
"SERVER_SOFTWARE" |
51 |
|
] |
52 |
|
|
53 |
def initialize(socket, config) |
def initialize(socket, config) |
54 |
@socket = socket |
@socket = socket |
55 |
@config = config |
@config = config |
56 |
|
@buffer = '' |
57 |
|
|
58 |
System.debug('from %s: connected', @socket.peeraddr[2]) |
System.debug('from %s: connected', @socket.peeraddr[2]) |
59 |
end |
end |
79 |
private :error |
private :error |
80 |
|
|
81 |
def gets |
def gets |
82 |
begin |
while true |
83 |
timeout(30) do |
if /\A(.*\n)([.\n]*)/ =~ @buffer |
84 |
return @socket.gets |
@buffer = $2 |
85 |
|
return $1 |
86 |
|
end |
87 |
|
|
88 |
|
if @buffer.size > @config.session_max_size |
89 |
|
error 'too long line' |
90 |
|
return nil |
91 |
|
end |
92 |
|
|
93 |
|
begin |
94 |
|
@buffer << @socket.sysread(@config.session_max_size) |
95 |
|
rescue EOFError |
96 |
|
error 'unexpected EOF' |
97 |
|
return nil |
98 |
end |
end |
|
rescue TimeoutError |
|
|
error 'terminated due to a time out' |
|
|
return nil |
|
99 |
end |
end |
100 |
end |
end |
101 |
private :gets |
private :gets |
105 |
# strings for security? |
# strings for security? |
106 |
str = '' |
str = '' |
107 |
while true |
while true |
|
if @socket.eof? |
|
|
error 'unexpected EOF' |
|
|
return |
|
|
end |
|
|
|
|
108 |
line = gets |
line = gets |
109 |
return if line.nil? |
return false if line.nil? |
110 |
|
|
|
if /\r?\n/ !~ line |
|
|
error "no trailing CRLF found in `#{line}'" |
|
|
return |
|
|
end |
|
|
|
|
111 |
break if /^\.\r?\n/ =~ line |
break if /^\.\r?\n/ =~ line |
112 |
|
|
113 |
line.sub!(/^\./, '') |
line.sub!(/^\./, '') |
114 |
line.chop! |
line.chop! |
115 |
str << line + "\r\n" |
str << line + "\r\n" |
116 |
|
|
117 |
|
if str.size > @config.session_max_size |
118 |
|
error 'too long mail' |
119 |
|
return false |
120 |
|
end |
121 |
end |
end |
122 |
|
|
123 |
System.debug('from %s: %s', @socket.peeraddr[2], str) |
System.debug('from %s: %s', @socket.peeraddr[2], str) |
125 |
# FIXME: do something useful here... |
# FIXME: do something useful here... |
126 |
|
|
127 |
ok "dummy" |
ok "dummy" |
128 |
|
true |
129 |
end |
end |
130 |
private :handle_mail |
private :handle_mail |
131 |
|
|
135 |
value = nil |
value = nil |
136 |
metavars = {} |
metavars = {} |
137 |
while true |
while true |
|
if @socket.eof? |
|
|
error 'unexpected EOF' |
|
|
return |
|
|
end |
|
|
|
|
138 |
line = gets |
line = gets |
139 |
return if line.nil? |
return false if line.nil? |
140 |
|
|
|
if /\r?\n/ !~ line |
|
|
error "no trailing CRLF found in `#{line}'" |
|
|
end |
|
|
|
|
141 |
break if /^\.\r?\n/ =~ line |
break if /^\.\r?\n/ =~ line |
142 |
|
|
143 |
line.chop! |
line.chop! |
148 |
else |
else |
149 |
if name.nil? or value.nil? |
if name.nil? or value.nil? |
150 |
error "malformed input line `#{line}'" |
error "malformed input line `#{line}'" |
151 |
return |
return false |
152 |
end |
end |
153 |
|
|
154 |
value << "\r\n" + line |
value << "\r\n" + line |
155 |
|
|
156 |
|
if value.size > @config.session_max_size |
157 |
|
error "too big value for `#{name}'" |
158 |
|
return false |
159 |
|
end |
160 |
end |
end |
161 |
|
|
162 |
metavars[name] = value |
if CANONICAL_METAVARIABLES.include?(name) or /^HTTP_/ =~ name |
163 |
|
metavars[name] = value |
164 |
|
end |
165 |
end |
end |
166 |
|
|
167 |
System.debug('from %s: %s', |
System.debug('from %s: %s', |
172 |
|
|
173 |
body = '' |
body = '' |
174 |
while true |
while true |
|
if @socket.eof? |
|
|
error 'unexpected EOF' |
|
|
return |
|
|
end |
|
|
|
|
175 |
line = gets |
line = gets |
176 |
return if line.nil? |
return false if line.nil? |
|
|
|
|
if /\r?\n/ !~ line |
|
|
error "no trailing CRLF found in `#{line}'" |
|
|
end |
|
177 |
|
|
178 |
break if /^\.\r?\n/ =~ line |
break if /^\.\r?\n/ =~ line |
179 |
|
|
180 |
line.sub!(/^\./, '') |
line.sub!(/^\./, '') |
181 |
line.chop! |
line.chop! |
182 |
body << line + "\r\n" |
body << line + "\r\n" |
183 |
|
|
184 |
|
if body.size > @config.session_max_size |
185 |
|
error 'too big HTTP request' |
186 |
|
return false |
187 |
|
end |
188 |
end |
end |
189 |
|
|
190 |
System.debug('from %s: %s', @socket.peeraddr[2], body) |
System.debug('from %s: %s', @socket.peeraddr[2], body) |
195 |
tmp = body.gsub(/^\./, '..') |
tmp = body.gsub(/^\./, '..') |
196 |
@socket << "Content-Type: text/plain\r\n\r\n#{tmp}" |
@socket << "Content-Type: text/plain\r\n\r\n#{tmp}" |
197 |
@socket << ".\r\n" |
@socket << ".\r\n" |
198 |
|
true |
199 |
end |
end |
200 |
private :handle_cgi |
private :handle_cgi |
201 |
|
|
202 |
def run |
def handle_command(cmd, *args) |
203 |
until @socket.eof? |
case cmd |
204 |
line = gets |
when 'VERSION' |
205 |
return if line.nil? |
if args.size != 1 |
206 |
|
error 'one argument is required for VERSION' |
207 |
|
return false |
208 |
|
end |
209 |
|
|
210 |
if /\r?\n/ !~ line |
if args[0] != PROTOCOL_VERSION |
211 |
error "no trailing CRLF found in `#{line}'" |
error "unsupported protocol version `#{args[0]}'" |
212 |
return |
return false |
213 |
end |
end |
|
|
|
|
System.info('from %s: %s', @socket.peeraddr[2], line.chop) |
|
214 |
|
|
215 |
cmd, *args = line.chop.split(/\s+/) |
ok "use the protocol version #{PROTOCOL_VERSION}" |
216 |
|
|
217 |
case cmd |
when 'EXPIRE' |
218 |
when 'VERSION' |
if args.size != 0 |
219 |
if args.size != 1 |
error 'no argument is required for EXPIRE' |
220 |
error 'one argument is required for VERSION' |
return false |
221 |
return |
end |
222 |
end |
|
223 |
|
# FIXME: do something useful here... |
224 |
if args[0] != PROTOCOL_VERSION |
|
225 |
error "unsupported protocol version `#{args[0]}'" |
ok "dummy" |
226 |
return |
|
227 |
end |
when 'OPTIMIZE' |
228 |
|
if args.size != 0 |
229 |
ok "use the protocol version #{PROTOCOL_VERSION}" |
error 'no argument is required for OPTIMIZE' |
230 |
|
return false |
231 |
when 'EXPIRE' |
end |
232 |
if args.size != 0 |
|
233 |
error 'no argument is required for EXPIRE' |
# FIXME: do something useful here... |
234 |
return |
|
235 |
end |
ok "dummy" |
236 |
|
|
237 |
# FIXME: do something useful here... |
when 'MAIL' |
238 |
|
if args.size != 0 |
239 |
ok "dummy" |
error 'no argument is required for MAIL' |
240 |
|
return false |
241 |
when 'OPTIMIZE' |
end |
242 |
if args.size != 0 |
|
243 |
error 'no argument is required for OPTIMIZE' |
return handle_mail() |
244 |
return |
|
245 |
end |
when 'CGI' |
246 |
|
if args.size != 0 |
247 |
# FIXME: do something useful here... |
error 'no argument is required for CGI' |
248 |
|
return false |
249 |
ok "dummy" |
end |
250 |
|
|
251 |
when 'MAIL' |
return handle_cgi() |
252 |
if args.size != 0 |
|
253 |
error 'no argument is required for MAIL' |
when 'BYE' |
254 |
return |
if args.size != 0 |
255 |
end |
error 'no argument is required for BYE' |
256 |
|
return false |
257 |
handle_mail |
end |
258 |
|
|
259 |
when 'CGI' |
ok "good-bye!" |
260 |
if args.size != 0 |
return false |
261 |
error 'no argument is required for CGI' |
|
262 |
return |
else |
263 |
end |
error "unknown command `#{cmd}'" |
264 |
|
return false |
265 |
handle_cgi |
end |
266 |
|
|
267 |
when 'BYE' |
true |
268 |
if args.size != 0 |
end |
269 |
error 'no argument is required for BYE' |
|
270 |
return |
def run |
271 |
|
begin |
272 |
|
timeout(@config.session_max_time) do |
273 |
|
count = 0 |
274 |
|
while count <= @config.session_max_commands |
275 |
|
line = gets |
276 |
|
return if line.nil? |
277 |
|
|
278 |
|
System.info('from %s: %s', @socket.peeraddr[2], line.chop) |
279 |
|
|
280 |
|
cmd, *args = line.chop.split(/\s+/) |
281 |
|
break unless handle_command(cmd, *args) |
282 |
|
count += 1 |
283 |
end |
end |
|
|
|
|
ok "good-bye!" |
|
|
return |
|
|
|
|
|
else |
|
|
error "unknown command `#{cmd}'" |
|
|
return |
|
284 |
end |
end |
285 |
|
rescue TimeoutError |
286 |
|
error 'too long session time' |
287 |
end |
end |
288 |
end |
end |
289 |
|
|
290 |
def close |
def close |
291 |
|
System.debug('%s: closed', @socket.peeraddr[2]) |
292 |
|
|
293 |
@socket.close |
@socket.close |
294 |
end |
end |
295 |
|
|