python: Make scgi-wsgi{,3} use ashd.serve.

[ashd.git] / python3 / scgi-wsgi3

diff --git a/python3/scgi-wsgi3 b/python3/scgi-wsgi3
index 9befb25..0dfe9a1 100755 (executable)
--- a/python3/scgi-wsgi3
+++ b/python3/scgi-wsgi3
@@ -1,23 +1,27 @@
 #!/usr/bin/python3
 
-import sys, os, getopt
+import sys, os, getopt, logging, collections
 import socket
-import ashd.scgi
+import ashd.scgi, ashd.serve
 
 def usage(out):
-    out.write("usage: scgi-wsgi [-hA] [-p MODPATH] [-T [HOST:]PORT] HANDLER-MODULE [ARGS...]\n")
+    out.write("usage: scgi-wsgi3 [-hAL] [-p MODPATH] [-T [HOST:]PORT] HANDLER-MODULE [ARGS...]\n")
 
 sk = None
 modwsgi_compat = False
-opts, args = getopt.getopt(sys.argv[1:], "+hAp:T:")
+setlog = True
+opts, args = getopt.getopt(sys.argv[1:], "+hALp:T:")
 for o, a in opts:
     if o == "-h":
         usage(sys.stdout)
         sys.exit(0)
     elif o == "-p":
         sys.path.insert(0, a)
+    elif o == "-L":
+        setlog = False
     elif o == "-T":
         sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        sk.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
         p = a.rfind(":")
         if p < 0:
             bindhost = "localhost"
@@ -32,6 +36,8 @@ for o, a in opts:
 if len(args) < 1:
     usage(sys.stderr)
     sys.exit(1)
+if setlog:
+    logging.basicConfig(format="scgi-wsgi3(%(name)s): %(levelname)s: %(message)s")
 
 if sk is None:
     # This is suboptimal, since the socket on stdin is not necessarily
@@ -42,17 +48,88 @@ if sk is None:
 try:
     handlermod = __import__(args[0], fromlist = ["dummy"])
 except ImportError as exc:
-    sys.stderr.write("scgi-wsgi: handler %s not found: %s\n" % (args[0], exc.args[0]))
+    sys.stderr.write("scgi-wsgi3: 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("scgi-wsgi: handler %s has no `wmain' function\n" % args[0])
+        sys.stderr.write("scgi-wsgi3: 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("scgi-wsgi: handler %s has no `application' object\n" % args[0])
+        sys.stderr.write("scgi-wsgi3: handler %s has no `application' object\n" % args[0])
         sys.exit(1)
     handler = handlermod.application
 
-ashd.scgi.servescgi(sk, ashd.scgi.wrapwsgi(handler))
+def mkenv(head, sk):
+    try:
+        env = ashd.scgi.decodehead(head, "utf-8")
+        env["wsgi.uri_encoding"] = "utf-8"
+    except UnicodeError:
+        env = ashd.scgi.decodehead(head, "latin-1")
+        env["wsgi.uri_encoding"] = "latin-1"
+    env["wsgi.version"] = 1, 0
+    if "HTTP_X_ASH_PROTOCOL" in env:
+        env["wsgi.url_scheme"] = env["HTTP_X_ASH_PROTOCOL"]
+    elif "HTTPS" in env:
+        env["wsgi.url_scheme"] = "https"
+    else:
+        env["wsgi.url_scheme"] = "http"
+    env["wsgi.input"] = sk
+    env["wsgi.errors"] = sys.stderr
+    env["wsgi.multithread"] = True
+    env["wsgi.multiprocess"] = False
+    env["wsgi.run_once"] = False
+    return env
+
+def recode(thing):
+    if isinstance(thing, collections.ByteString):
+        return thing
+    else:
+        return str(thing).encode("latin-1")
+
+class reqthread(ashd.serve.wsgithread):
+    def __init__(self, sk):
+        super().__init__()
+        self.bsk = sk.dup()
+        self.sk = self.bsk.makefile("rwb")
+
+    def handlewsgi(self):
+        return handler(self.env, self.startreq)
+
+    def writehead(self, status, headers):
+        buf = bytearray()
+        buf += b"Status: " + recode(status) + b"\n"
+        for nm, val in headers:
+            buf += recode(nm) + b": " + recode(val) + b"\n"
+        buf += b"\n"
+        try:
+            self.sk.write(buf)
+        except IOError:
+            raise ashd.serve.closed()
+
+    def writedata(self, data):
+        try:
+            self.sk.write(data)
+            self.sk.flush()
+        except IOError:
+            raise ashd.serve.closed()
+
+    def handle(self):
+        head = ashd.scgi.readhead(self.sk)
+        self.env = mkenv(head, self.sk)
+        super().handle()
+
+    def run(self):
+        try:
+            super().run()
+        finally:
+            self.sk.close()
+            self.bsk.close()
+
+while True:
+    nsk, addr = sk.accept()
+    try:
+        reqthread(nsk).start()
+    finally:
+        nsk.close()