summaryrefslogtreecommitdiffstats
path: root/tests/httpd
blob: a7b42a1d2c5df766a435834478220264a094538f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
# -*- tcl -*-
#
# The httpd_ procedures implement a stub http server.
#
# Copyright © 1997-1998 Sun Microsystems, Inc.
# Copyright © 1999-2000 Scriptics Corporation
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.

#set httpLog 1

# Do not use [info hostname].
# Name resolution is often a problem on OSX; not focus of HTTP package anyway.
# Also a problem on other platforms for http-4.14 (test with bad port number).
set HOST localhost

proc httpd_init {{port 8015}} {
    set s [socket -server httpdAccept $port]
    # Save the actual port number in a global variable.
    # This is important when we're called with port 0
    # for picking an unused port at random.
    set ::port [lindex [chan configure $s -sockname] 2]
    return $s
}
proc httpd_log {args} {
    global httpLog
    if {[info exists httpLog] && $httpLog} {
	puts stderr "httpd: [join $args { }]"
    }
}
array set httpdErrors {
    204 {No Content}
    400 {Bad Request}
    401 {Authorization Required}
    404 {Not Found}
    503 {Service Unavailable}
    504 {Service Temporarily Unavailable}
}

proc httpdError {sock code args} {
    global httpdErrors
    puts $sock "$code $httpdErrors($code)"
    httpd_log "error: [join $args { }]"
}
proc httpdAccept {newsock ipaddr port} {
    global httpd
    upvar #0 httpd$newsock data

    fconfigure $newsock -blocking 0 -translation {auto crlf}
    httpd_log $newsock Connect $ipaddr $port
    set data(ipaddr) $ipaddr
    fileevent $newsock readable [list httpdRead $newsock]
}

# read data from a client request

proc httpdRead { sock } {
    upvar #0 httpd$sock data

    if {[eof $sock]} {
	set readCount -1
    } elseif {![info exists data(state)]} {

	# Read the protocol line and parse out the URL and query

	set readCount [gets $sock line]
	if {[regexp {(POST|GET|HEAD) ([^?]+)\??([^ ]*) HTTP/(1.[01])} $line \
		-> data(proto) data(url) data(query) data(httpversion)]} {
	    set data(state) mime
	    httpd_log $sock Query $line
	    if {[regexp {(?:^|[\?&])delay=([^&]+)} $data(query) {} val]} {
		fileevent $sock readable {}
		after $val [list fileevent $sock readable [list httpdRead $sock]]
	    }
	} else {
	    httpdError $sock 400
	    httpd_log $sock Error "bad first line:$line"
	    httpdSockDone $sock
	}
	return
    } elseif {$data(state) == "mime"} {

	# Read the HTTP headers

	set readCount [gets $sock line]
        if {[regexp {^([^:]+):(.*)$} $line -> key val]} {
            lappend data(meta) $key [string trim $val]
        }

    } elseif {$data(state) == "query"} {

	# Read the query data

	if {![info exists data(length_orig)]} {
	    set data(length_orig) $data(length)
	}
	set line [read $sock $data(length)]
	set readCount [string length $line]
	incr data(length) -$readCount
    }

    # string compare $readCount 0 maps -1 to -1, 0 to 0, and > 0 to 1

    set state [string compare $readCount 0],$data(state),$data(proto)
    httpd_log $sock $state
    switch -- $state {
	-1,mime,HEAD	-
	-1,mime,GET	-
	-1,mime,POST	{
	    # gets would block
	    return
	}
	0,mime,HEAD	-
	0,mime,GET	-
	0,query,POST	{
	    # Empty line at end of headers,
	    # or eof after query data
	    httpdRespond $sock
	}
	0,mime,POST	{
	    # Empty line between headers and query data
	    if {![info exists data(mime,content-length)]} {
		httpd_log $sock Error "No Content-Length for POST"
		httpdError $sock 400
		httpdSockDone $sock
	    } else {
		set data(state) query
		set data(length) $data(mime,content-length)

		# Special case to simulate servers that respond
		# without reading the post data.

		if {[string match *droppost* $data(url)]} {
		    fileevent $sock readable {}
		    httpdRespond $sock
		}
	    }
	}
	1,mime,HEAD	-
	1,mime,POST	-
	1,mime,GET	{
	    # A line of HTTP headers
	    if {[regexp {([^:]+):[ 	]*(.*)}  $line dummy key value]} {
		set data(mime,[string tolower $key]) $value
	    }
	}
	-1,query,POST	{
	    httpd_log $sock Error "unexpected eof on <$data(url)> request"
	    httpdError $sock 400
	    httpdSockDone $sock
	}
	1,query,POST	{
	    append data(query) $line
	    if {$data(length) <= 0} {
		set data(length) $data(length_orig)
		httpdRespond $sock
	    }
	}
	default {
	    if {[eof $sock]} {
		httpd_log $sock Error "unexpected eof on <$data(url)> request"
	    } else {
		httpd_log $sock Error "unhandled state <$state> fetching <$data(url)>"
	    }
	    httpdError $sock 404
	    httpdSockDone $sock
	}
    }
}
proc httpdSockDone { sock } {
    upvar #0 httpd$sock data
    unset data
    catch {close $sock}
}

# Respond to the query.

proc httpdRespond { sock } {
    global httpd bindata port
    upvar #0 httpd$sock data

    switch -glob -- $data(url) {
	*binary* {
	    set html "$bindata${::HOST}:$port$data(url)"
	    set type application/octet-stream
	}
	*xml* {
	    set html [encoding convertto utf-8 "<test>\u1234</test>"]
	    set type "application/xml;charset=UTF-8"
	}
	*post* {
	    set html "Got [string length $data(query)] bytes"
	    set type text/plain
	}
	*headers* {
	    set html ""
	    set type text/plain
	    foreach {key value} $data(meta) {
		append html [list $key $value] "\n"
	    }
	    set html [string trim $html]
	}
	default {
	    set type text/html

	    set html "<html><head><title>HTTP/1.0 TEST</title></head><body>
<h1>Hello, World!</h1>
<h2>$data(proto) $data(url)</h2>
"
	    if {[info exists data(query)] && [string length $data(query)]} {
		append html "<h2>Query</h2>\n<dl>\n"
		foreach {key value} [split $data(query) &=] {
		    append html "<dt>$key<dd>$value\n"
		    if {$key == "timeout"} {
			after $value	;# pause
		    }
		}
		append html </dl>\n
	    }
	    append html </body></html>
	}
    }

    # Catch errors from premature client closes

    catch {
	if {$data(proto) == "HEAD"} {
	    puts $sock "HTTP/1.0 200 OK"
	} else {
            # Split the response to test for [Bug 26245326]
	    puts -nonewline $sock "HT"
            flush $sock
            puts $sock "TP/1.0 200 Data follows"
	}
	puts $sock "Date: [clock format [clock seconds] \
                              -format {%a, %d %b %Y %H:%M:%S %Z}]"
	puts $sock "Content-Type: $type"
	puts $sock "Content-Length: [string length $html]"
        foreach {key val} $data(meta) {
            if {[string match "X-*" $key]} {
                puts $sock "$key: $val"
            }
        }
	puts $sock ""
	flush $sock
	if {$data(proto) != "HEAD"} {
	    fconfigure $sock -translation binary
	    puts -nonewline $sock $html
	}
    }
    httpd_log $sock Done ""
    httpdSockDone $sock
}