Commit | Line | Data |
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c270f222 FT |
1 | #!/usr/bin/python |
2 | ||
3 | import sys, os, getopt, threading | |
4e7888f7 | 4 | import ashd.proto, ashd.util |
c270f222 FT |
5 | |
6 | def usage(out): | |
7 | out.write("usage: ashd-wsgi [-hA] [-p MODPATH] HANDLER-MODULE [ARGS...]\n") | |
8 | ||
9 | modwsgi_compat = False | |
10 | opts, args = getopt.getopt(sys.argv[1:], "+hAp:") | |
11 | for o, a in opts: | |
12 | if o == "-h": | |
13 | usage(sys.stdout) | |
14 | sys.exit(0) | |
15 | elif o == "-p": | |
16 | sys.path.insert(0, a) | |
17 | elif o == "-A": | |
18 | modwsgi_compat = True | |
19 | if len(args) < 1: | |
20 | usage(sys.stderr) | |
21 | sys.exit(1) | |
22 | ||
23 | try: | |
24 | handlermod = __import__(args[0], fromlist = ["dummy"]) | |
25 | except ImportError, exc: | |
26 | sys.stderr.write("ashd-wsgi: handler %s not found: %s\n" % (args[0], exc.message)) | |
27 | sys.exit(1) | |
28 | if not modwsgi_compat: | |
29 | if not hasattr(handlermod, "wmain"): | |
30 | sys.stderr.write("ashd-wsgi: handler %s has no `wmain' function\n" % args[0]) | |
31 | sys.exit(1) | |
adb11d5f | 32 | handler = handlermod.wmain(*args[1:]) |
c270f222 FT |
33 | else: |
34 | if not hasattr(handlermod, "application"): | |
35 | sys.stderr.write("ashd-wsgi: handler %s has no `application' object\n" % args[0]) | |
36 | sys.exit(1) | |
37 | handler = handlermod.application | |
38 | ||
81a0ca30 FT |
39 | class closed(IOError): |
40 | def __init__(self): | |
41 | super(closed, self).__init__("The client has closed the connection.") | |
42 | ||
70d942a7 FT |
43 | cwd = os.getcwd() |
44 | def absolutify(path): | |
45 | if path[0] != '/': | |
46 | return os.path.join(cwd, path) | |
47 | return path | |
48 | ||
09c82f9c FT |
49 | def unquoteurl(url): |
50 | buf = "" | |
51 | i = 0 | |
52 | while i < len(url): | |
53 | c = url[i] | |
54 | i += 1 | |
55 | if c == '%': | |
370d235f | 56 | if len(url) >= i + 2: |
09c82f9c FT |
57 | c = 0 |
58 | if '0' <= url[i] <= '9': | |
59 | c |= (ord(url[i]) - ord('0')) << 4 | |
60 | elif 'a' <= url[i] <= 'f': | |
370d235f | 61 | c |= (ord(url[i]) - ord('a') + 10) << 4 |
09c82f9c | 62 | elif 'A' <= url[i] <= 'F': |
370d235f | 63 | c |= (ord(url[i]) - ord('A') + 10) << 4 |
09c82f9c FT |
64 | else: |
65 | raise ValueError("Illegal URL escape character") | |
66 | if '0' <= url[i + 1] <= '9': | |
67 | c |= ord(url[i + 1]) - ord('0') | |
68 | elif 'a' <= url[i + 1] <= 'f': | |
370d235f | 69 | c |= ord(url[i + 1]) - ord('a') + 10 |
09c82f9c | 70 | elif 'A' <= url[i + 1] <= 'F': |
370d235f | 71 | c |= ord(url[i + 1]) - ord('A') + 10 |
09c82f9c FT |
72 | else: |
73 | raise ValueError("Illegal URL escape character") | |
74 | buf += chr(c) | |
75 | i += 2 | |
76 | else: | |
77 | raise ValueError("Incomplete URL escape character") | |
78 | else: | |
79 | buf += c | |
80 | return buf | |
81a0ca30 | 81 | |
c270f222 FT |
82 | def dowsgi(req): |
83 | env = {} | |
84 | env["wsgi.version"] = 1, 0 | |
85 | for key, val in req.headers: | |
86 | env["HTTP_" + key.upper().replace("-", "_")] = val | |
87 | env["SERVER_SOFTWARE"] = "ashd-wsgi/1" | |
88 | env["GATEWAY_INTERFACE"] = "CGI/1.1" | |
89 | env["SERVER_PROTOCOL"] = req.ver | |
90 | env["REQUEST_METHOD"] = req.method | |
91 | env["REQUEST_URI"] = req.url | |
09c82f9c FT |
92 | try: |
93 | env["PATH_INFO"] = unquoteurl(req.rest) | |
94 | except: | |
95 | env["PATH_INFO"] = req.rest | |
c270f222 FT |
96 | name = req.url |
97 | p = name.find('?') | |
98 | if p >= 0: | |
c270f222 | 99 | env["QUERY_STRING"] = name[p + 1:] |
8498ab28 | 100 | name = name[:p] |
c270f222 FT |
101 | else: |
102 | env["QUERY_STRING"] = "" | |
103 | if name[-len(req.rest):] == req.rest: | |
104 | name = name[:-len(req.rest)] | |
105 | env["SCRIPT_NAME"] = name | |
106 | if "Host" in req: env["SERVER_NAME"] = req["Host"] | |
107 | if "X-Ash-Server-Port" in req: env["SERVER_PORT"] = req["X-Ash-Server-Port"] | |
108 | if "X-Ash-Protocol" in req and req["X-Ash-Protocol"] == "https": env["HTTPS"] = "on" | |
109 | if "X-Ash-Address" in req: env["REMOTE_ADDR"] = req["X-Ash-Address"] | |
110 | if "Content-Type" in req: env["CONTENT_TYPE"] = req["Content-Type"] | |
111 | if "Content-Length" in req: env["CONTENT_LENGTH"] = req["Content-Length"] | |
70d942a7 | 112 | if "X-Ash-File" in req: env["SCRIPT_FILENAME"] = absolutify(req["X-Ash-File"]) |
c270f222 FT |
113 | if "X-Ash-Protocol" in req: env["wsgi.url_scheme"] = req["X-Ash-Protocol"] |
114 | env["wsgi.input"] = req.sk | |
115 | env["wsgi.errors"] = sys.stderr | |
116 | env["wsgi.multithread"] = True | |
117 | env["wsgi.multiprocess"] = False | |
118 | env["wsgi.run_once"] = False | |
119 | ||
120 | resp = [] | |
121 | respsent = [] | |
122 | ||
699754de | 123 | def flushreq(): |
c270f222 FT |
124 | if not respsent: |
125 | if not resp: | |
126 | raise Exception, "Trying to write data before starting response." | |
127 | status, headers = resp | |
128 | respsent[:] = [True] | |
8bb0e3c1 FT |
129 | try: |
130 | req.sk.write("HTTP/1.1 %s\n" % status) | |
131 | for nm, val in headers: | |
132 | req.sk.write("%s: %s\n" % (nm, val)) | |
133 | req.sk.write("\n") | |
134 | except IOError: | |
135 | raise closed() | |
699754de FT |
136 | |
137 | def write(data): | |
138 | if not data: | |
139 | return | |
8bb0e3c1 | 140 | flushreq() |
81a0ca30 FT |
141 | try: |
142 | req.sk.write(data) | |
143 | req.sk.flush() | |
144 | except IOError: | |
145 | raise closed() | |
c270f222 FT |
146 | |
147 | def startreq(status, headers, exc_info = None): | |
148 | if resp: | |
149 | if exc_info: # Interesting, this... | |
150 | try: | |
151 | if respsent: | |
152 | raise exc_info[0], exc_info[1], exc_info[2] | |
153 | finally: | |
154 | exc_info = None # CPython GC bug? | |
155 | else: | |
156 | raise Exception, "Can only start responding once." | |
157 | resp[:] = status, headers | |
158 | return write | |
159 | ||
160 | respiter = handler(env, startreq) | |
161 | try: | |
8bb0e3c1 FT |
162 | try: |
163 | for data in respiter: | |
164 | write(data) | |
165 | if resp: | |
166 | flushreq() | |
167 | except closed: | |
168 | pass | |
c270f222 FT |
169 | finally: |
170 | if hasattr(respiter, "close"): | |
171 | respiter.close() | |
172 | ||
173 | class reqthread(threading.Thread): | |
174 | def __init__(self, req): | |
175 | super(reqthread, self).__init__(name = "Request handler") | |
176 | self.req = req.dup() | |
177 | ||
178 | def run(self): | |
179 | try: | |
180 | dowsgi(self.req) | |
181 | finally: | |
182 | self.req.close() | |
183 | ||
184 | def handle(req): | |
185 | reqthread(req).start() | |
186 | ||
4e7888f7 | 187 | ashd.util.serveloop(handle) |