From a965ddb65d40f3a1e5ef26657f46b04509d07dc8 Mon Sep 17 00:00:00 2001
From: Stephen Gran <steve@lobefin.net>
Date: Sun, 9 Aug 2009 22:36:34 +0000
Subject: [PATCH] stop doing DNS lookups, part 1

Signed-off-by: Stephen Gran <steve@lobefin.net>
---
 ud-generate | 41 ++++++++++++++++-------------------------
 1 file changed, 16 insertions(+), 25 deletions(-)

diff --git a/ud-generate b/ud-generate
index 4800938..5523ce0 100755
--- a/ud-generate
+++ b/ud-generate
@@ -922,26 +922,17 @@ def GenBSMTP(File, HomePrefix):
       raise
    Done(File, F, None)
   
-#  cache IP adresses
-HostToIPCache = {}
-def HostToIP(Host):
-   global HostToIPCache
-   if not Host in HostToIPCache:
-      IPAdressesT = None
-      try:
-         IPAdressesT = list(set([ (a[0], a[4][0]) for a in socket.getaddrinfo(Host, None)]))
-      except socket.gaierror, (code):
-         if code[0] != -2:
-            raise
-      IPAdresses = []
-      if not IPAdressesT is None:
-         for addr in IPAdressesT:
-            if addr[0] == socket.AF_INET:
-               IPAdresses += [addr[1], "::ffff:"+addr[1]]
-            else:
-               IPAdresses += [addr[1]]
-      HostToIPCache[Host] = IPAdresses
-   return HostToIPCache[Host]
+def HostToIP(Host, mapped=True):
+
+   IPAdresses = []
+
+   if Host[1].has_key("ipHostNumber"):
+      for addr in Host[1]["ipHostNumber"]:
+         IPAdresses.append(addr)
+         if IsV6Addr.match(addr) is None and mapped == "True":
+            IPAdresses.append("::ffff:"+addr)
+
+   return IPAdresses
 
 # Generate the ssh known hosts file
 def GenSSHKnown(File, mode=None):
@@ -983,10 +974,10 @@ def GenSSHKnown(File, mode=None):
      
          for I in x[1]["sshRSAHostKey"]:
             if mode and mode == 'authorized_keys':
-               Line = 'command="rsync --server --sender -pr . /var/cache/userdir-ldap/hosts/%s",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,from="%s" %s' % (Host, ",".join(HostToIP(Host)), I)
+               Line = 'command="rsync --server --sender -pr . /var/cache/userdir-ldap/hosts/%s",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,from="%s" %s' % (Host, ",".join(HostToIP(x)), I)
                #Line = 'command="rsync --server --sender -pr . /var/cache/userdir-ldap/hosts/%s",no-port-forwarding,no-X11-forwarding,no-agent-forwarding %s' % (Host,I)
             else:
-               Line = "%s %s" %(",".join(HostNames + HostToIP(Host)), I)
+               Line = "%s %s" %(",".join(HostNames + HostToIP(x, False)), I)
             Line = Sanitize(Line) + "\n"
             F.write(Line)
    # Oops, something unspeakable happened.
@@ -996,7 +987,7 @@ def GenSSHKnown(File, mode=None):
    Done(File, F, None)
 
 # Generate the debianhosts file (list of all IP addresses)
-def GenHosts(l, File):
+def GenHosts(File):
    F = None
    try:
       OldMask = os.umask(0022)
@@ -1012,7 +1003,7 @@ def GenHosts(l, File):
          if IsDebianHost.match(GetAttr(x, "hostname")) is None:
             continue
 
-         addrs = x[0]["ipHostNumber"]
+         addrs = x[1]["ipHostNumber"]
          for addr in addrs:
             if addr not in seen:
                seen.add(addr)
@@ -1104,7 +1095,7 @@ PasswdAttrs = filter(lambda x: not x in DisabledUsers, PasswdAttrs)
 SSHFiles = GenSSHShadow()
 GenMarkers(GlobalDir + "markers")
 GenSSHKnown(GlobalDir + "ssh_known_hosts")
-GenHosts(l, GlobalDir + "debianhosts")
+GenHosts(GlobalDir + "debianhosts")
 
 for host in HostAttrs:
    if not "hostname" in host[1]:
-- 
2.20.1