import and use subprocess.py from python 2.6.

This should hopefully let us run even on python 2.3 on really old servers.

client.py

@@ -1,4 +1,5 @@
-import struct, socket, select, subprocess, errno, re
+import struct, socket, select, errno, re
+import compat.ssubprocess as ssubprocess
 import helpers, ssnet, ssh
 from ssnet import SockWrapper, Handler, Proxy, Mux, MuxWrapper
 from helpers import *
@@ -45,7 +46,7 @@ class FirewallClient:
         e = None
         for argv in argv_tries:
             try:
-                self.p = subprocess.Popen(argv, stdout=s1, preexec_fn=setup)
+                self.p = ssubprocess.Popen(argv, stdout=s1, preexec_fn=setup)
                 e = None
                 break
             except OSError, e:

firewall.py

@@ -1,11 +1,12 @@
-import subprocess, re, errno
+import re, errno
+import compat.ssubprocess as ssubprocess
 import helpers
 from helpers import *
 
 
 def ipt_chain_exists(name):
     argv = ['iptables', '-t', 'nat', '-nL']
-    p = subprocess.Popen(argv, stdout = subprocess.PIPE)
+    p = ssubprocess.Popen(argv, stdout = ssubprocess.PIPE)
     for line in p.stdout:
         if line.startswith('Chain %s ' % name):
             return True
@@ -17,7 +18,7 @@ def ipt_chain_exists(name):
 def ipt(*args):
     argv = ['iptables', '-t', 'nat'] + list(args)
     debug1('>> %s\n' % ' '.join(argv))
-    rv = subprocess.call(argv)
+    rv = ssubprocess.call(argv)
     if rv:
         raise Fatal('%r returned %d' % (argv, rv))
 
@@ -64,7 +65,7 @@ def do_iptables(port, subnets):
 
 def ipfw_rule_exists(n):
     argv = ['ipfw', 'list']
-    p = subprocess.Popen(argv, stdout = subprocess.PIPE)
+    p = ssubprocess.Popen(argv, stdout = ssubprocess.PIPE)
     found = False
     for line in p.stdout:
         if line.startswith('%05d ' % n):
@@ -82,7 +83,7 @@ def ipfw_rule_exists(n):
 
 def sysctl_get(name):
     argv = ['sysctl', '-n', name]
-    p = subprocess.Popen(argv, stdout = subprocess.PIPE)
+    p = ssubprocess.Popen(argv, stdout = ssubprocess.PIPE)
     line = p.stdout.readline()
     rv = p.wait()
     if rv:
@@ -96,7 +97,7 @@ def sysctl_get(name):
 def _sysctl_set(name, val):
     argv = ['sysctl', '-w', '%s=%s' % (name, val)]
     debug1('>> %s\n' % ' '.join(argv))
-    rv = subprocess.call(argv, stdout = open('/dev/null', 'w'))
+    rv = ssubprocess.call(argv, stdout = open('/dev/null', 'w'))
 
 
 _oldctls = []
@@ -110,7 +111,7 @@ def sysctl_set(name, val):
 def ipfw(*args):
     argv = ['ipfw', '-q'] + list(args)
     debug1('>> %s\n' % ' '.join(argv))
-    rv = subprocess.call(argv)
+    rv = ssubprocess.call(argv)
     if rv:
         raise Fatal('%r returned %d' % (argv, rv))
 

hostwatch.py

@@ -1,5 +1,6 @@
-import subprocess, time, socket, re, select, errno
+import time, socket, re, select, errno
 if not globals().get('skip_imports'):
+    import compat.ssubprocess as ssubprocess
     import helpers
     from helpers import *
 
@@ -108,7 +109,7 @@ def _check_netstat():
     debug2(' > netstat\n')
     argv = ['netstat', '-n']
     try:
-        p = subprocess.Popen(argv, stdout=subprocess.PIPE, stderr=null)
+        p = ssubprocess.Popen(argv, stdout=ssubprocess.PIPE, stderr=null)
         content = p.stdout.read()
         p.wait()
     except OSError, e:
@@ -128,7 +129,7 @@ def _check_smb(hostname):
     argv = ['smbclient', '-U', '%', '-L', hostname]
     debug2(' > smb: %s\n' % hostname)
     try:
-        p = subprocess.Popen(argv, stdout=subprocess.PIPE, stderr=null)
+        p = ssubprocess.Popen(argv, stdout=ssubprocess.PIPE, stderr=null)
         lines = p.stdout.readlines()
         p.wait()
     except OSError, e:
@@ -185,7 +186,7 @@ def _check_nmb(hostname, is_workgroup, is_master):
     argv = ['nmblookup'] + ['-M']*is_master + ['--', hostname]
     debug2(' > n%d%d: %s\n' % (is_workgroup, is_master, hostname))
     try:
-        p = subprocess.Popen(argv, stdout=subprocess.PIPE, stderr=null)
+        p = ssubprocess.Popen(argv, stdout=ssubprocess.PIPE, stderr=null)
         lines = p.stdout.readlines()
         rv = p.wait()
     except OSError, e:

server.py

@@ -1,6 +1,7 @@
-import re, struct, socket, select, subprocess, traceback
+import re, struct, socket, select, traceback
 if not globals().get('skip_imports'):
     import ssnet, helpers, hostwatch
+    import compat.ssubprocess as ssubprocess
     from ssnet import SockWrapper, Handler, Proxy, Mux, MuxWrapper
     from helpers import *
 
@@ -43,7 +44,7 @@ def _maskbits(netmask):
 
 def _list_routes():
     argv = ['netstat', '-rn']
-    p = subprocess.Popen(argv, stdout=subprocess.PIPE)
+    p = ssubprocess.Popen(argv, stdout=ssubprocess.PIPE)
     routes = []
     for line in p.stdout:
         cols = re.split(r'\s+', line)

ssh.py

@@ -1,4 +1,5 @@
-import sys, os, re, subprocess, socket, zlib
+import sys, os, re, socket, zlib
+import compat.ssubprocess as ssubprocess
 import helpers
 from helpers import *
 
@@ -14,9 +15,10 @@ def readfile(name):
 
 
 def empackage(z, filename):
+    (path,basename) = os.path.split(filename)
     content = z.compress(readfile(filename))
     content += z.flush(zlib.Z_SYNC_FLUSH)
-    return '%s\n%d\n%s' % (filename,len(content), content)
+    return '%s\n%d\n%s' % (basename,len(content), content)
 
 
 def connect(rhostport, python):
@@ -33,6 +35,7 @@ def connect(rhostport, python):
     z = zlib.compressobj(1)
     content = readfile('assembler.py')
     content2 = (empackage(z, 'helpers.py') +
+                empackage(z, 'compat/ssubprocess.py') +
                 empackage(z, 'ssnet.py') +
                 empackage(z, 'hostwatch.py') +
                 empackage(z, 'server.py') +
@@ -58,7 +61,7 @@ def connect(rhostport, python):
     s1a,s1b = os.dup(s1.fileno()), os.dup(s1.fileno())
     s1.close()
     debug2('executing: %r\n' % argv)
-    p = subprocess.Popen(argv, stdin=s1a, stdout=s1b, preexec_fn=setup,
+    p = ssubprocess.Popen(argv, stdin=s1a, stdout=s1b, preexec_fn=setup,
                          close_fds=True)
     os.close(s1a)
     os.close(s1b)