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 | ||
70d942a7 FT |
39 | cwd = os.getcwd() |
40 | def absolutify(path): | |
41 | if path[0] != '/': | |
42 | return os.path.join(cwd, path) | |
43 | return path | |
44 | ||
09c82f9c FT |
45 | def unquoteurl(url): |
46 | buf = "" | |
47 | i = 0 | |
48 | while i < len(url): | |
49 | c = url[i] | |
50 | i += 1 | |
51 | if c == '%': | |
52 | if len(url) > i + 2: | |
53 | c = 0 | |
54 | if '0' <= url[i] <= '9': | |
55 | c |= (ord(url[i]) - ord('0')) << 4 | |
56 | elif 'a' <= url[i] <= 'f': | |
57 | c |= (ord(url[i]) - ord('a')) << 4 | |
58 | elif 'A' <= url[i] <= 'F': | |
59 | c |= (ord(url[i]) - ord('A')) << 4 | |
60 | else: | |
61 | raise ValueError("Illegal URL escape character") | |
62 | if '0' <= url[i + 1] <= '9': | |
63 | c |= ord(url[i + 1]) - ord('0') | |
64 | elif 'a' <= url[i + 1] <= 'f': | |
65 | c |= ord(url[i + 1]) - ord('a') | |
66 | elif 'A' <= url[i + 1] <= 'F': | |
67 | c |= ord(url[i + 1]) - ord('A') | |
68 | else: | |
69 | raise ValueError("Illegal URL escape character") | |
70 | buf += chr(c) | |
71 | i += 2 | |
72 | else: | |
73 | raise ValueError("Incomplete URL escape character") | |
74 | else: | |
75 | buf += c | |
76 | return buf | |
77 | ||
c270f222 FT |
78 | def dowsgi(req): |
79 | env = {} | |
80 | env["wsgi.version"] = 1, 0 | |
81 | for key, val in req.headers: | |
82 | env["HTTP_" + key.upper().replace("-", "_")] = val | |
83 | env["SERVER_SOFTWARE"] = "ashd-wsgi/1" | |
84 | env["GATEWAY_INTERFACE"] = "CGI/1.1" | |
85 | env["SERVER_PROTOCOL"] = req.ver | |
86 | env["REQUEST_METHOD"] = req.method | |
87 | env["REQUEST_URI"] = req.url | |
09c82f9c FT |
88 | try: |
89 | env["PATH_INFO"] = unquoteurl(req.rest) | |
90 | except: | |
91 | env["PATH_INFO"] = req.rest | |
c270f222 FT |
92 | name = req.url |
93 | p = name.find('?') | |
94 | if p >= 0: | |
c270f222 | 95 | env["QUERY_STRING"] = name[p + 1:] |
8498ab28 | 96 | name = name[:p] |
c270f222 FT |
97 | else: |
98 | env["QUERY_STRING"] = "" | |
99 | if name[-len(req.rest):] == req.rest: | |
100 | name = name[:-len(req.rest)] | |
101 | env["SCRIPT_NAME"] = name | |
102 | if "Host" in req: env["SERVER_NAME"] = req["Host"] | |
103 | if "X-Ash-Server-Port" in req: env["SERVER_PORT"] = req["X-Ash-Server-Port"] | |
104 | if "X-Ash-Protocol" in req and req["X-Ash-Protocol"] == "https": env["HTTPS"] = "on" | |
105 | if "X-Ash-Address" in req: env["REMOTE_ADDR"] = req["X-Ash-Address"] | |
106 | if "Content-Type" in req: env["CONTENT_TYPE"] = req["Content-Type"] | |
107 | if "Content-Length" in req: env["CONTENT_LENGTH"] = req["Content-Length"] | |
70d942a7 | 108 | if "X-Ash-File" in req: env["SCRIPT_FILENAME"] = absolutify(req["X-Ash-File"]) |
c270f222 FT |
109 | if "X-Ash-Protocol" in req: env["wsgi.url_scheme"] = req["X-Ash-Protocol"] |
110 | env["wsgi.input"] = req.sk | |
111 | env["wsgi.errors"] = sys.stderr | |
112 | env["wsgi.multithread"] = True | |
113 | env["wsgi.multiprocess"] = False | |
114 | env["wsgi.run_once"] = False | |
115 | ||
116 | resp = [] | |
117 | respsent = [] | |
118 | ||
699754de | 119 | def flushreq(): |
c270f222 FT |
120 | if not respsent: |
121 | if not resp: | |
122 | raise Exception, "Trying to write data before starting response." | |
123 | status, headers = resp | |
124 | respsent[:] = [True] | |
125 | req.sk.write("HTTP/1.1 %s\n" % status) | |
126 | for nm, val in headers: | |
127 | req.sk.write("%s: %s\n" % (nm, val)) | |
128 | req.sk.write("\n") | |
699754de FT |
129 | |
130 | def write(data): | |
131 | if not data: | |
132 | return | |
133 | flushreq() | |
c270f222 FT |
134 | req.sk.write(data) |
135 | req.sk.flush() | |
136 | ||
137 | def startreq(status, headers, exc_info = None): | |
138 | if resp: | |
139 | if exc_info: # Interesting, this... | |
140 | try: | |
141 | if respsent: | |
142 | raise exc_info[0], exc_info[1], exc_info[2] | |
143 | finally: | |
144 | exc_info = None # CPython GC bug? | |
145 | else: | |
146 | raise Exception, "Can only start responding once." | |
147 | resp[:] = status, headers | |
148 | return write | |
149 | ||
150 | respiter = handler(env, startreq) | |
151 | try: | |
152 | for data in respiter: | |
153 | write(data) | |
699754de FT |
154 | if resp: |
155 | flushreq() | |
c270f222 FT |
156 | finally: |
157 | if hasattr(respiter, "close"): | |
158 | respiter.close() | |
159 | ||
160 | class reqthread(threading.Thread): | |
161 | def __init__(self, req): | |
162 | super(reqthread, self).__init__(name = "Request handler") | |
163 | self.req = req.dup() | |
164 | ||
165 | def run(self): | |
166 | try: | |
167 | dowsgi(self.req) | |
168 | finally: | |
169 | self.req.close() | |
170 | ||
171 | def handle(req): | |
172 | reqthread(req).start() | |
173 | ||
4e7888f7 | 174 | ashd.util.serveloop(handle) |