fishdescriptor: bugfixes

[chiark-utils.git] / fishdescriptor / fishdescriptor

diff --git a/fishdescriptor/fishdescriptor b/fishdescriptor/fishdescriptor
index 8bcb46707c210c8b0436aead2b72aa1b0fb7f5f9..dc1776207d55e62b99acf91f652bc0d46e452d4a 100755 (executable)
--- a/fishdescriptor/fishdescriptor
+++ b/fishdescriptor/fishdescriptor
@@ -4,6 +4,9 @@ import sys
 import fishdescriptor.fish
 import optparse
 import re
+import subprocess
+import socket
+import os
 
 donor = None
 
@@ -37,9 +40,9 @@ def implement_pending():
     for (nominal, there), actual in zip(pending, actuals):
         overwriting_info = fdmap.get(nominal)
         if overwriting_info is not None: os.close(overwriting_info[0])
-        fdmap[nominal] = (actual, Donor, there)
+        fdmap[nominal] = (actual, donor, there)
 
-def implmement_sockinfo(nominal):
+def implement_sockinfo(nominal):
     (actual, tdonor, there) = fdmap[nominal]
     # socket.fromfd requires the AF.  But of course we don't know the AF.
     # There isn't a sane way to get it in Python:
@@ -66,7 +69,7 @@ def implmement_sockinfo(nominal):
     (output, dummy) = famp.communicate()
     family = int(output)
 
-    sock = socket.fromfd(fd, family, 0)
+    sock = socket.fromfd(actual, family, 0)
 
     print("[%s] %d sockinfo" % (tdonor.pid, there), end='')
     for f in (lambda: socket.AddressFamily(family).name,
@@ -80,7 +83,7 @@ def implmement_sockinfo(nominal):
     sock.close()
 
 def permute_fds_for_exec():
-    actual2intended = { info[0]: nominal for nominal, info in fdmap.items }
+    actual2intended = { info[0]: nominal for nominal, info in fdmap.items() }
     # invariant at the start of each loop iteration:
     #     for each intended (aka `nominal') we have processed:
     #         relevant open-file is only held in fd intended
@@ -108,7 +111,7 @@ def permute_fds_for_exec():
 def implement_exec(argl):
     if donor is not None: donor.detach()
     sys.stdout.flush()
-    permut_fds_for_exec()
+    permute_fds_for_exec()
     os.execvp(argl[0], argl)
 
 def set_donor(pid):
@@ -138,22 +141,24 @@ def process_args():
                   callback=ocb_set_donor)
 
     args = sys.argv[1:]
-    last_nominal = None
+    last_nominal = None # None or (nominal,) ie None or (None,) or (int,)
 
     while True:
         (ov, args) = op.parse_args(args=args, values=ov)
         if not len(args): break
 
         arg = args.pop(0)
+        print("ARG %s" % arg, file=sys.stderr)
 
-        if donor is not None:
+        if donor is None:
+            print("SET_DONOR", file=sys.stderr)
             set_donor(int(arg))
         elif arg_matches(r'^(?:(\d+)=)?(\d+)?$'):
             (nominal, there) = m.groups()
             nominal = None if nominal is None else int(nominal)
             there = int(there)
             pending.append((nominal,there))
-            last_nominal = nominal
+            last_nominal = (nominal,)
         elif arg == 'exec':
             if not len(args):
                 op.error("exec needs command to run")
@@ -163,7 +168,7 @@ def process_args():
             if last_nominal is None:
                 op.error('sockinfo needs a prior fd spec')
             implement_pending()
-            implement_sockinfo(last_nominal)
+            implement_sockinfo(last_nominal[0])
         else:
             op.error("unknown argument/option `%s'" % arg)