def op_cb_compound(self, args, cred):
env = CompoundState(args, cred)
# Check for problems with the compound itself
if args.minorversion != 0:
if args.minorversion not in self.minor_versions:
env.results.set_empty_return(NFS4ERR_MINOR_VERS_MISMATCH)
return env
try:
self.check_utf8str_cs(args.tag)
except NFS4Errror as e:
env.results.set_empty_return(e.status, "Invalid utf8 tag")
return env
# Handle the individual operations
status = NFS4_OK
for arg in args.argarray:
opname = nfs_cb_opnum4.get(arg.argop, 'op_cb_illegal')
log_cb.info("*** %s (%d) ***" % (opname, arg.argop))
env.index += 1
# Look for function self.op_<name>
funct = getattr(self, opname.lower(), None)
if funct is None:
# If it doesn't exist, return _NOTSUPP
result = encode_status_by_name(opname.lower()[3:],
NFS4ERR_NOTSUPP)
else:
try:
# Otherwise, call the function
result = funct(arg, env)
except NFS4Error as e:
# XXX NOTE this only works for error returns that
# include no data. Must ensure others (eg setattr)
# catch error themselves to encode properly.
result = encode_status_by_name(opname.lower()[3:],
e.status,
msg=e.tag)
except NFS4Replay:
# Just pass this on up
raise
except StandardError:
# Uh-oh. This is a server bug
traceback.print_exc()
result = encode_status_by_name(opname.lower()[3:],
NFS4ERR_SERVERFAULT)
env.results.append(result)
status = result.status
if status != NFS4_OK:
break
log_cb.info("Replying. Status %s (%d)" % (nfsstat4[status], status))
return env
def op_cb_compound(self, args, cred):
env = CompoundState(args, cred)
# Check for problems with the compound itself
if args.minorversion != 0:
if args.minorversion not in self.minor_versions:
env.results.set_empty_return(NFS4ERR_MINOR_VERS_MISMATCH)
return env
try:
self.check_utf8str_cs(args.tag)
except NFS4Errror as e:
env.results.set_empty_return(e.status, "Invalid utf8 tag")
return env
# Handle the individual operations
status = NFS4_OK
for arg in args.argarray:
opname = nfs_cb_opnum4.get(arg.argop, 'op_cb_illegal')
log_cb.info("*** %s (%d) ***" % (opname, arg.argop))
env.index += 1
# Look for function self.op_<name>
funct = getattr(self, opname.lower(), None)
if funct is None:
# If it doesn't exist, return _NOTSUPP
result = encode_status_by_name(opname.lower()[3:],
NFS4ERR_NOTSUPP)
else:
try:
# Otherwise, call the function
result = funct(arg, env)
except NFS4Error as e:
# XXX NOTE this only works for error returns that
# include no data. Must ensure others (eg setattr)
# catch error themselves to encode properly.
result = encode_status_by_name(opname.lower()[3:],
e.status, msg=e.tag)
except NFS4Replay:
# Just pass this on up
raise
except StandardError:
# Uh-oh. This is a server bug
traceback.print_exc()
result = encode_status_by_name(opname.lower()[3:],
NFS4ERR_SERVERFAULT)
env.results.append(result)
status = result.status
if status != NFS4_OK:
break
log_cb.info("Replying. Status %s (%d)" % (nfsstat4[status], status))
return env
try:
self.check_utf8str_cs(args.tag)
except NFS4Errror, e:
env.results.set_empty_return(e.status, "Invalid utf8 tag")
return env
# Handle the individual operations
status = NFS4_OK
for arg in args.argarray:
opname = nfs_cb_opnum4.get(arg.argop, 'op_cb_illegal')
log_cb.info("*** %s (%d) ***" % (opname, arg.argop))
env.index += 1
# Look for function self.op_<name>
funct = getattr(self, opname.lower(), None)
if funct is None:
# If it doesn't exist, return _NOTSUPP
result = encode_status_by_name(opname.lower()[3:],
NFS4ERR_NOTSUPP)
else:
try:
# Otherwise, call the function
result = funct(arg, env)
except NFS4Error, e:
# XXX NOTE this only works for error returns that
# include no data. Must ensure others (eg setattr)
# catch error themselves to encode properly.
result = encode_status_by_name(opname.lower()[3:],
e.status, msg=e.tag)
except NFS4Replay:
# Just pass this on up
raise
except StandardError:
# Uh-oh. This is a server bug
def handle_1(self, data, cred, callback=False):
"""COMPOUND procedure"""
log.debug("*" * 40)
if callback:
log.debug("** CALLBACK **")
log.debug("Handling COMPOUND")
# stage 1: data in XDR as received from the client
unpacker = nfs4lib.FancyNFS4Unpacker(data)
if callback:
args = unpacker.unpack_CB_COMPOUNDargs()
else:
args = unpacker.unpack_COMPOUND4args()
log.debug("Client sent:")
log.debug(repr(args))
unpacker.done()
# stage 2: pre-processing - data in COMPOUND4args
# XXX: check operation, alter stuff, delay etc. etc.
args.req_size = len(data) # BUG, need to use cred.payload_size
if callback:
env = CBCompoundState(args, cred)
else:
env = CompoundState(args, cred)
for arg in args.argarray:
env.index += 1
opname = nfs_opnum4.get(arg.argop, 'op_illegal')
log.info("*** %s (%d) ***" % (opname, arg.argop))
# look for functions implemented by the proxy
# that override communication
funct = getattr(self, opname.lower(), None)
if funct is not None and callable(funct):
try:
result = funct(arg, cred, direction=0)
except Exception:
log.error("Function override %s failed" % opname.lower())
# handle error condition if specified
error = None
if self.errorhandler is not None:
error = self.errorhandler.get_error(opname.lower()[3:], arg,
env)
if error is not None:
result = encode_status_by_name(opname.lower()[3:],
int(error),
msg="Proxy Rewrite Error")
env.results.append(result)
p = nfs4lib.FancyNFS4Packer()
if callback:
res = CB_COMPOUND4res(env.results.reply.status,
env.results.reply.tag,
env.results.reply.results)
p.pack_CB_COMPOUND4res(res)
else:
res = COMPOUND4res(env.results.reply.status,
env.results.reply.tag,
env.results.reply.results)
p.pack_COMPOUND4res(res)
log.info(repr(res))
reply = p.get_buffer()
return rpc.SUCCESS, reply
#stage 3: repack the data and forward to server
packer = nfs4lib.FancyNFS4Packer()
if callback:
packer.pack_CB_COMPOUND4args(args)
else:
packer.pack_COMPOUND4args(args)
log.debug("Proxy sent:")
log.debug(repr(args))
calldata = packer.get_buffer()
try:
ret_data = self.forward_call(calldata, callback)
except rpc.RPCTimeout:
log.critical("Error: cannot connect to destination server")
return rpc.GARBAGE_ARGS, None
# stage 4: data in XDR as returned by the server
unpacker = nfs4lib.FancyNFS4Unpacker(ret_data)
if callback:
res = unpacker.unpack_CB_COMPOUND4res()
else:
res = unpacker.unpack_COMPOUND4res()
log.debug("Server returned:")
log.debug(repr(res))
unpacker.done()
# stage 5: post-processing - data in COMPOUND4res
# XXX: check operation etc.
for arg in res.resarray:
opname = nfs_opnum4.get(arg.resop, 'op_illegal')
log.info("*** %s (%d) ***" % (opname, arg.resop))
# look for functions implemented by the proxy
# that override communication
funct = getattr(self, opname.lower(), None)
if funct is not None and callable(funct):
try:
result = funct(arg, cred, direction=1)
except Exception:
log.error("Function override %s failed" % opname.lower())
# state 6: repack and return XDR data to client
packer = nfs4lib.FancyNFS4Packer()
if callback:
packer.pack_CB_COMPOUND4res(res)
else:
packer.pack_COMPOUND4res(res)
log.debug("Proxy returned:")
log.debug(repr(res))
reply = packer.get_buffer()
return rpc.SUCCESS, reply
def handle_1(self, data, cred, callback=False):
"""COMPOUND procedure"""
log.debug("*" * 40)
if callback:
log.debug("** CALLBACK **")
log.debug("Handling COMPOUND")
# stage 1: data in XDR as received from the client
unpacker = nfs4lib.FancyNFS4Unpacker(data)
if callback:
args = unpacker.unpack_CB_COMPOUNDargs()
else:
args = unpacker.unpack_COMPOUND4args()
log.debug("Client sent:")
log.debug(repr(args))
unpacker.done()
# stage 2: pre-processing - data in COMPOUND4args
# XXX: check operation, alter stuff, delay etc. etc.
args.req_size = len(data) # BUG, need to use cred.payload_size
if callback:
env = CBCompoundState(args, cred)
else:
env = CompoundState(args, cred)
for arg in args.argarray:
env.index += 1
opname = nfs_opnum4.get(arg.argop, 'op_illegal')
log.info("*** %s (%d) ***" % (opname, arg.argop))
# look for functions implemented by the proxy
# that override communication
funct = getattr(self, opname.lower(), None)
if funct is not None and callable(funct):
try:
result = funct(arg, cred, direction=0)
except Exception:
log.error("Function override %s failed" % opname.lower())
# handle error condition if specified
error = None
if self.errorhandler is not None:
error = self.errorhandler.get_error(opname.lower()[3:],
arg, env)
if error is not None:
result = encode_status_by_name(opname.lower()[3:],
int(error),
msg="Proxy Rewrite Error")
env.results.append(result)
p = nfs4lib.FancyNFS4Packer()
if callback:
res = CB_COMPOUND4res(env.results.reply.status,
env.results.reply.tag,
env.results.reply.results)
p.pack_CB_COMPOUND4res(res)
else:
res = COMPOUND4res(env.results.reply.status,
env.results.reply.tag,
env.results.reply.results)
p.pack_COMPOUND4res(res)
log.info(repr(res))
reply = p.get_buffer()
return rpc.SUCCESS, reply
#stage 3: repack the data and forward to server
packer = nfs4lib.FancyNFS4Packer()
if callback:
packer.pack_CB_COMPOUND4args(args)
else:
packer.pack_COMPOUND4args(args)
log.debug("Proxy sent:")
log.debug(repr(args))
calldata = packer.get_buffer()
try:
ret_data = self.forward_call(calldata, callback)
except rpc.RPCTimeout:
log.critical("Error: cannot connect to destination server")
return rpc.GARBAGE_ARGS, None
# stage 4: data in XDR as returned by the server
unpacker = nfs4lib.FancyNFS4Unpacker(ret_data)
if callback:
res = unpacker.unpack_CB_COMPOUND4res()
else:
res = unpacker.unpack_COMPOUND4res()
log.debug("Server returned:")
log.debug(repr(res))
unpacker.done()
# stage 5: post-processing - data in COMPOUND4res
# XXX: check operation etc.
for arg in res.resarray:
opname = nfs_opnum4.get(arg.resop, 'op_illegal')
log.info("*** %s (%d) ***" % (opname, arg.resop))
# look for functions implemented by the proxy
# that override communication
funct = getattr(self, opname.lower(), None)
if funct is not None and callable(funct):
try:
result = funct(arg, cred, direction=1)
except Exception:
log.error("Function override %s failed" % opname.lower())
# state 6: repack and return XDR data to client
packer = nfs4lib.FancyNFS4Packer()
if callback:
packer.pack_CB_COMPOUND4res(res)
else:
packer.pack_COMPOUND4res(res)
log.debug("Proxy returned:")
log.debug(repr(res))
reply = packer.get_buffer()
return rpc.SUCCESS, reply
