--- /dev/null
+#!/usr/bin/python3
+
+import sys, os, getopt, threading, time, locale, collections
+import ashd.proto, ashd.util
+
+def usage(out):
+ out.write("usage: ashd-wsgi [-hA] [-p MODPATH] [-l REQLIMIT] HANDLER-MODULE [ARGS...]\n")
+
+reqlimit = 0
+modwsgi_compat = False
+opts, args = getopt.getopt(sys.argv[1:], "+hAp:l:")
+for o, a in opts:
+ if o == "-h":
+ usage(sys.stdout)
+ sys.exit(0)
+ elif o == "-p":
+ sys.path.insert(0, a)
+ elif o == "-A":
+ modwsgi_compat = True
+ elif o == "-l":
+ reqlimit = int(a)
+if len(args) < 1:
+ usage(sys.stderr)
+ sys.exit(1)
+
+try:
+ handlermod = __import__(args[0], fromlist = ["dummy"])
+except ImportError as exc:
+ sys.stderr.write("ashd-wsgi: handler %s not found: %s\n" % (args[0], exc.args[0]))
+ sys.exit(1)
+if not modwsgi_compat:
+ if not hasattr(handlermod, "wmain"):
+ sys.stderr.write("ashd-wsgi: handler %s has no `wmain' function\n" % args[0])
+ sys.exit(1)
+ handler = handlermod.wmain(*args[1:])
+else:
+ if not hasattr(handlermod, "application"):
+ sys.stderr.write("ashd-wsgi: handler %s has no `application' object\n" % args[0])
+ sys.exit(1)
+ handler = handlermod.application
+
+class closed(IOError):
+ def __init__(self):
+ super().__init__("The client has closed the connection.")
+
+cwd = os.getcwd()
+def absolutify(path):
+ if path[0] != '/':
+ return os.path.join(cwd, path)
+ return path
+
+def unquoteurl(url):
+ buf = bytearray()
+ i = 0
+ while i < len(url):
+ c = url[i]
+ i += 1
+ if c == ord(b'%'):
+ if len(url) >= i + 2:
+ c = 0
+ if ord(b'0') <= url[i] <= ord(b'9'):
+ c |= (url[i] - ord(b'0')) << 4
+ elif ord(b'a') <= url[i] <= ord(b'f'):
+ c |= (url[i] - ord(b'a') + 10) << 4
+ elif ord(b'A') <= url[i] <= ord(b'F'):
+ c |= (url[i] - ord(b'A') + 10) << 4
+ else:
+ raise ValueError("Illegal URL escape character")
+ if ord(b'0') <= url[i + 1] <= ord(b'9'):
+ c |= url[i + 1] - ord('0')
+ elif ord(b'a') <= url[i + 1] <= ord(b'f'):
+ c |= url[i + 1] - ord(b'a') + 10
+ elif ord(b'A') <= url[i + 1] <= ord(b'F'):
+ c |= url[i + 1] - ord(b'A') + 10
+ else:
+ raise ValueError("Illegal URL escape character")
+ buf.append(c)
+ i += 2
+ else:
+ raise ValueError("Incomplete URL escape character")
+ else:
+ buf.append(c)
+ return buf
+
+def dowsgi(req):
+ env = {}
+ env["wsgi.version"] = 1, 0
+ for key, val in req.headers:
+ env["HTTP_" + key.upper().replace(b"-", b"_").decode("latin-1")] = val.decode("latin-1")
+ env["SERVER_SOFTWARE"] = "ashd-wsgi/1"
+ env["GATEWAY_INTERFACE"] = "CGI/1.1"
+ env["SERVER_PROTOCOL"] = req.ver.decode("latin-1")
+ env["REQUEST_METHOD"] = req.method.decode("latin-1")
+ try:
+ rawpi = unquoteurl(req.rest)
+ except:
+ rawpi = req.rest
+ try:
+ name, rest, pi = (v.decode("utf-8") for v in (req.url, req.rest, rawpi))
+ env["wsgi.uri_encoding"] = "utf-8"
+ except UnicodeError as exc:
+ name, rest, pi = (v.decode("latin-1") for v in (req.url, req.rest, rawpi))
+ env["wsgi.uri_encoding"] = "latin-1"
+ env["REQUEST_URI"] = name
+ p = name.find('?')
+ if p >= 0:
+ env["QUERY_STRING"] = name[p + 1:]
+ name = name[:p]
+ else:
+ env["QUERY_STRING"] = ""
+ if name[-len(rest):] == rest:
+ # This is the same hack used in call*cgi.
+ name = name[:-len(rest)]
+ if name == "/":
+ # This seems to be normal CGI behavior, but see callcgi.c for
+ # details.
+ pi = "/" + pi
+ name = ""
+ env["SCRIPT_NAME"] = name
+ env["PATH_INFO"] = pi
+ for src, tgt in [("HTTP_HOST", "SERVER_NAME"), ("HTTP_X_ASH_SERVER_PORT", "SERVER_PORT"),
+ ("HTTP_X_ASH_ADDRESS", "REMOTE_ADDR"), ("HTTP_CONTENT_TYPE", "CONTENT_TYPE"),
+ ("HTTP_CONTENT_LENGTH", "CONTENT_LENGTH"), ("HTTP_X_ASH_PROTOCOL", "wsgi.url_scheme")]:
+ if src in env: env[tgt] = env[src]
+ if "X-Ash-Protocol" in req and req["X-Ash-Protocol"] == b"https": env["HTTPS"] = "on"
+ if "X-Ash-File" in req: env["SCRIPT_FILENAME"] = absolutify(req["X-Ash-File"].decode(locale.getpreferredencoding()))
+ env["wsgi.input"] = req.sk
+ env["wsgi.errors"] = sys.stderr
+ env["wsgi.multithread"] = True
+ env["wsgi.multiprocess"] = False
+ env["wsgi.run_once"] = False
+
+ resp = []
+ respsent = []
+
+ def recode(thing):
+ if isinstance(thing, collections.ByteString):
+ return thing
+ else:
+ return str(thing).encode("latin-1")
+
+ def flushreq():
+ if not respsent:
+ if not resp:
+ raise Exception("Trying to write data before starting response.")
+ status, headers = resp
+ respsent[:] = [True]
+ buf = bytearray()
+ buf += b"HTTP/1.1 " + recode(status) + b"\n"
+ for nm, val in headers:
+ buf += recode(nm) + b": " + recode(val) + b"\n"
+ buf += b"\n"
+ try:
+ req.sk.write(buf)
+ except IOError:
+ raise closed()
+
+ def write(data):
+ if not data:
+ return
+ flushreq()
+ try:
+ req.sk.write(data)
+ req.sk.flush()
+ except IOError:
+ raise closed()
+
+ def startreq(status, headers, exc_info = None):
+ if resp:
+ if exc_info: # Interesting, this...
+ try:
+ if respsent:
+ raise exc_info[1]
+ finally:
+ exc_info = None # CPython GC bug?
+ else:
+ raise Exception("Can only start responding once.")
+ resp[:] = status, headers
+ return write
+
+ respiter = handler(env, startreq)
+ try:
+ try:
+ for data in respiter:
+ write(data)
+ if resp:
+ flushreq()
+ except closed:
+ pass
+ finally:
+ if hasattr(respiter, "close"):
+ respiter.close()
+
+flightlock = threading.Condition()
+inflight = 0
+
+class reqthread(threading.Thread):
+ def __init__(self, req):
+ super().__init__(name = "Request handler")
+ self.req = req.dup()
+
+ def run(self):
+ global inflight
+ try:
+ with flightlock:
+ if reqlimit != 0:
+ start = time.time()
+ while inflight >= reqlimit:
+ flightlock.wait(10)
+ if time.time() - start > 10:
+ os.abort()
+ inflight += 1
+ try:
+ dowsgi(self.req)
+ finally:
+ with flightlock:
+ inflight -= 1
+ flightlock.notify()
+ finally:
+ self.req.close()
+
+def handle(req):
+ reqthread(req).start()
+
+ashd.util.serveloop(handle)
Dolda2000 GitWeb / ashd.git / blobdiff