Commit | Line | Data |
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55fa3f63 | 1 | #!/usr/bin/python3 |
c270f222 | 2 | |
e90d84e6 | 3 | import sys, os, getopt, socket, logging, time, locale, collections.abc, signal |
fd72c1e6 | 4 | import ashd.util, ashd.serve, ashd.htlib |
d5ee5cde FT |
5 | try: |
6 | import pdm.srv | |
7 | except: | |
8 | pdm = None | |
c270f222 FT |
9 | |
10 | def usage(out): | |
31466b18 | 11 | out.write("usage: ashd-wsgi3 [-hAL] [-m PDM-SPEC] [-p MODPATH] [-t REQUEST-HANDLER[:PAR[=VAL](,PAR[=VAL])...]] HANDLER-MODULE [ARGS...]\n") |
c270f222 | 12 | |
8db41888 | 13 | hspec = "free", {} |
c270f222 | 14 | modwsgi_compat = False |
14640dcc | 15 | setlog = True |
e361dba1 | 16 | opts, args = getopt.getopt(sys.argv[1:], "+hALp:t:l:m:") |
c270f222 FT |
17 | for o, a in opts: |
18 | if o == "-h": | |
19 | usage(sys.stdout) | |
20 | sys.exit(0) | |
21 | elif o == "-p": | |
22 | sys.path.insert(0, a) | |
14640dcc FT |
23 | elif o == "-L": |
24 | setlog = False | |
c270f222 FT |
25 | elif o == "-A": |
26 | modwsgi_compat = True | |
e361dba1 | 27 | elif o == "-l": |
19ff507b | 28 | hspec = "free", {"max": a, "abort": "10"} |
8db41888 FT |
29 | elif o == "-t": |
30 | hspec = ashd.serve.parsehspec(a) | |
d5ee5cde FT |
31 | elif o == "-m": |
32 | if pdm is not None: | |
33 | pdm.srv.listen(a) | |
c270f222 FT |
34 | if len(args) < 1: |
35 | usage(sys.stderr) | |
36 | sys.exit(1) | |
14640dcc FT |
37 | if setlog: |
38 | logging.basicConfig(format="ashd-wsgi3(%(name)s): %(levelname)s: %(message)s") | |
64a8cd9f | 39 | log = logging.getLogger("ashd-wsgi3") |
c270f222 FT |
40 | |
41 | try: | |
42 | handlermod = __import__(args[0], fromlist = ["dummy"]) | |
55fa3f63 | 43 | except ImportError as exc: |
1f3d7aa3 | 44 | sys.stderr.write("ashd-wsgi3: handler %s not found: %s\n" % (args[0], exc.args[0])) |
c270f222 FT |
45 | sys.exit(1) |
46 | if not modwsgi_compat: | |
47 | if not hasattr(handlermod, "wmain"): | |
1f3d7aa3 | 48 | sys.stderr.write("ashd-wsgi3: handler %s has no `wmain' function\n" % args[0]) |
c270f222 | 49 | sys.exit(1) |
adb11d5f | 50 | handler = handlermod.wmain(*args[1:]) |
c270f222 FT |
51 | else: |
52 | if not hasattr(handlermod, "application"): | |
1f3d7aa3 | 53 | sys.stderr.write("ashd-wsgi3: handler %s has no `application' object\n" % args[0]) |
c270f222 FT |
54 | sys.exit(1) |
55 | handler = handlermod.application | |
56 | ||
70d942a7 FT |
57 | cwd = os.getcwd() |
58 | def absolutify(path): | |
59 | if path[0] != '/': | |
60 | return os.path.join(cwd, path) | |
61 | return path | |
62 | ||
09c82f9c | 63 | def unquoteurl(url): |
55fa3f63 | 64 | buf = bytearray() |
09c82f9c FT |
65 | i = 0 |
66 | while i < len(url): | |
67 | c = url[i] | |
68 | i += 1 | |
55fa3f63 | 69 | if c == ord(b'%'): |
370d235f | 70 | if len(url) >= i + 2: |
09c82f9c | 71 | c = 0 |
55fa3f63 FT |
72 | if ord(b'0') <= url[i] <= ord(b'9'): |
73 | c |= (url[i] - ord(b'0')) << 4 | |
74 | elif ord(b'a') <= url[i] <= ord(b'f'): | |
75 | c |= (url[i] - ord(b'a') + 10) << 4 | |
76 | elif ord(b'A') <= url[i] <= ord(b'F'): | |
77 | c |= (url[i] - ord(b'A') + 10) << 4 | |
09c82f9c FT |
78 | else: |
79 | raise ValueError("Illegal URL escape character") | |
55fa3f63 FT |
80 | if ord(b'0') <= url[i + 1] <= ord(b'9'): |
81 | c |= url[i + 1] - ord('0') | |
82 | elif ord(b'a') <= url[i + 1] <= ord(b'f'): | |
83 | c |= url[i + 1] - ord(b'a') + 10 | |
84 | elif ord(b'A') <= url[i + 1] <= ord(b'F'): | |
85 | c |= url[i + 1] - ord(b'A') + 10 | |
09c82f9c FT |
86 | else: |
87 | raise ValueError("Illegal URL escape character") | |
55fa3f63 | 88 | buf.append(c) |
09c82f9c FT |
89 | i += 2 |
90 | else: | |
91 | raise ValueError("Incomplete URL escape character") | |
92 | else: | |
55fa3f63 | 93 | buf.append(c) |
09c82f9c | 94 | return buf |
81a0ca30 | 95 | |
4881876d | 96 | def mkenv(req): |
c270f222 FT |
97 | env = {} |
98 | env["wsgi.version"] = 1, 0 | |
99 | for key, val in req.headers: | |
55fa3f63 | 100 | env["HTTP_" + key.upper().replace(b"-", b"_").decode("latin-1")] = val.decode("latin-1") |
c270f222 FT |
101 | env["SERVER_SOFTWARE"] = "ashd-wsgi/1" |
102 | env["GATEWAY_INTERFACE"] = "CGI/1.1" | |
55fa3f63 FT |
103 | env["SERVER_PROTOCOL"] = req.ver.decode("latin-1") |
104 | env["REQUEST_METHOD"] = req.method.decode("latin-1") | |
105 | try: | |
106 | rawpi = unquoteurl(req.rest) | |
107 | except: | |
108 | rawpi = req.rest | |
109 | try: | |
110 | name, rest, pi = (v.decode("utf-8") for v in (req.url, req.rest, rawpi)) | |
111 | env["wsgi.uri_encoding"] = "utf-8" | |
112 | except UnicodeError as exc: | |
113 | name, rest, pi = (v.decode("latin-1") for v in (req.url, req.rest, rawpi)) | |
114 | env["wsgi.uri_encoding"] = "latin-1" | |
115 | env["REQUEST_URI"] = name | |
c270f222 FT |
116 | p = name.find('?') |
117 | if p >= 0: | |
c270f222 | 118 | env["QUERY_STRING"] = name[p + 1:] |
8498ab28 | 119 | name = name[:p] |
c270f222 FT |
120 | else: |
121 | env["QUERY_STRING"] = "" | |
55fa3f63 | 122 | if name[-len(rest):] == rest: |
53d666ca | 123 | # This is the same hack used in call*cgi. |
55fa3f63 FT |
124 | name = name[:-len(rest)] |
125 | if name == "/": | |
53d666ca FT |
126 | # This seems to be normal CGI behavior, but see callcgi.c for |
127 | # details. | |
128 | pi = "/" + pi | |
129 | name = "" | |
c270f222 | 130 | env["SCRIPT_NAME"] = name |
53d666ca | 131 | env["PATH_INFO"] = pi |
1af656d2 FT |
132 | for src, tgt in [("HTTP_HOST", "SERVER_NAME"), ("HTTP_X_ASH_PROTOCOL", "wsgi.url_scheme"), |
133 | ("HTTP_X_ASH_SERVER_ADDRESS", "SERVER_ADDR"), ("HTTP_X_ASH_SERVER_PORT", "SERVER_PORT"), | |
134 | ("HTTP_X_ASH_ADDRESS", "REMOTE_ADDR"), ("HTTP_X_ASH_PORT", "REMOTE_PORT"), | |
135 | ("HTTP_CONTENT_TYPE", "CONTENT_TYPE"), ("HTTP_CONTENT_LENGTH", "CONTENT_LENGTH")]: | |
55fa3f63 | 136 | if src in env: env[tgt] = env[src] |
0bf0720d FT |
137 | for key in ["HTTP_CONTENT_TYPE", "HTTP_CONTENT_LENGTH"]: |
138 | # The CGI specification does not strictly require this, but | |
139 | # many actualy programs and libraries seem to. | |
140 | if key in env: del env[key] | |
55fa3f63 FT |
141 | if "X-Ash-Protocol" in req and req["X-Ash-Protocol"] == b"https": env["HTTPS"] = "on" |
142 | if "X-Ash-File" in req: env["SCRIPT_FILENAME"] = absolutify(req["X-Ash-File"].decode(locale.getpreferredencoding())) | |
c270f222 FT |
143 | env["wsgi.input"] = req.sk |
144 | env["wsgi.errors"] = sys.stderr | |
145 | env["wsgi.multithread"] = True | |
146 | env["wsgi.multiprocess"] = False | |
147 | env["wsgi.run_once"] = False | |
4881876d | 148 | return env |
c270f222 | 149 | |
4881876d | 150 | def recode(thing): |
e90d84e6 | 151 | if isinstance(thing, collections.abc.ByteString): |
4881876d FT |
152 | return thing |
153 | else: | |
154 | return str(thing).encode("latin-1") | |
155 | ||
46adc298 FT |
156 | class request(ashd.serve.wsgirequest): |
157 | def __init__(self, *, bkreq, **kw): | |
158 | super().__init__(**kw) | |
159 | self.bkreq = bkreq.dup() | |
fd72c1e6 | 160 | self.sendrights = None |
46adc298 FT |
161 | |
162 | def mkenv(self): | |
163 | return mkenv(self.bkreq) | |
164 | ||
165 | def handlewsgi(self, env, startreq): | |
166 | return handler(env, startreq) | |
167 | ||
168 | def fileno(self): | |
169 | return self.bkreq.bsk.fileno() | |
699754de | 170 | |
4881876d | 171 | def writehead(self, status, headers): |
fd72c1e6 FT |
172 | headers = list(headers) |
173 | for header in headers: | |
174 | nm, val = header | |
175 | if nm.lower() == "x-ash-send-rights": | |
176 | self.sendrights = val | |
177 | headers.remove(header) | |
178 | break | |
46adc298 FT |
179 | w = self.buffer.extend |
180 | w(b"HTTP/1.1 " + recode(status) + b"\n") | |
4881876d | 181 | for nm, val in headers: |
46adc298 FT |
182 | w(recode(nm) + b": " + recode(val) + b"\n") |
183 | w(b"\n") | |
c270f222 | 184 | |
46adc298 | 185 | def flush(self): |
8bb0e3c1 | 186 | try: |
fd72c1e6 FT |
187 | if self.sendrights is not None: |
188 | ret = ashd.htlib.sendfd(self.bkreq.bsk.fileno(), self.sendrights.fileno(), self.buffer) | |
189 | self.sendrights.close() | |
190 | self.sendrights = None | |
191 | else: | |
192 | ret = self.bkreq.bsk.send(self.buffer, socket.MSG_DONTWAIT) | |
46adc298 | 193 | self.buffer[:ret] = b"" |
4881876d FT |
194 | except IOError: |
195 | raise ashd.serve.closed() | |
196 | ||
46adc298 | 197 | def close(self): |
fd72c1e6 FT |
198 | try: |
199 | self.bkreq.close() | |
200 | finally: | |
201 | if self.sendrights is not None: | |
202 | self.sendrights.close() | |
46adc298 | 203 | |
c270f222 | 204 | def handle(req): |
46adc298 | 205 | reqhandler.handle(request(bkreq=req, handler=reqhandler)) |
c270f222 | 206 | |
8db41888 FT |
207 | if hspec[0] not in ashd.serve.names: |
208 | sys.stderr.write("ashd-wsgi3: no such request handler: %s\n" % hspec[0]) | |
209 | sys.exit(1) | |
210 | hclass = ashd.serve.names[hspec[0]] | |
211 | try: | |
212 | hargs = hclass.parseargs(**hspec[1]) | |
213 | except ValueError as exc: | |
214 | sys.stderr.write("ashd-wsgi3: %s\n" % exc) | |
215 | sys.exit(1) | |
216 | ||
fd0303c3 FT |
217 | def sigterm(sig, frame): |
218 | socket.fromfd(0, socket.AF_UNIX, socket.SOCK_SEQPACKET).shutdown(socket.SHUT_RDWR) # :P | |
219 | for signum in [signal.SIGINT, signal.SIGTERM]: | |
220 | signal.signal(signum, sigterm) | |
221 | ||
8db41888 | 222 | reqhandler = hclass(**hargs) |
c67f9f8b FT |
223 | try: |
224 | ashd.util.serveloop(handle) | |
225 | finally: | |
226 | reqhandler.close() |