Linux kernel, wifi hack, security & Golang

今天在安装完xmpppy-0.5.0rc1 ，在运行的时候报md5和sha被hashlib替换，查了资料才发现，在Python2.6中使用md5, sha函数不推荐直接使用而是用hashlib替代。

md5

-import md5
-def HH(some): return md5.new(some)
+import hashlib
+def HH(some): return hashlib.md5(some)

sha

-import sha
-def HH(some): return sha.new(some)
+import hashlib
+def HH(some): return hashlib.sha1(some)

都包括 md5(), sha1(), sha224(), sha256(), sha384(), and sha512()

这里给出auth.py md5和sha的patch

diff –git a/xmpp/auth.py b/xmpp/auth.py
index 6e51d72..508718a 100755
— a/xmpp/auth.py
+++ b/xmpp/auth.py
@@ -21,11 +21,11 @@ Can be used both for client and transport authentication.

from protocol import *
from client import PlugIn
-import sha,base64,random,dispatcher,re
+import base64,random,dispatcher,re

-import md5
-def HH(some): return md5.new(some).hexdigest()
-def H(some): return md5.new(some).digest()
+import hashlib
+def HH(some): return hashlib.md5(some).hexdigest()
+def H(some): return hashlib.md5(some).digest()
def C(some): return ‘:’.join(some)

class NonSASL(PlugIn):
@@ -54,15 +54,15 @@ class NonSASL(PlugIn):

if query.getTag(’digest’):
self.DEBUG(”Performing digest authentication”,’ok’)
-            query.setTagData(’digest’,sha.new(owner.Dispatcher.Stream._document_attrs['id']+self.password).hexdigest())
+            query.setTagData(’digest’,hashlib.sha1(owner.Dispatcher.Stream._document_attrs['id']+self.password).hexdigest())
if query.getTag(’password’): query.delChild(’password’)
method=’digest’
elif query.getTag(’token’):
token=query.getTagData(’token’)
seq=query.getTagData(’sequence’)
self.DEBUG(”Performing zero-k authentication”,’ok’)
-            hash = sha.new(sha.new(self.password).hexdigest()+token).hexdigest()
-            for foo in xrange(int(seq)): hash = sha.new(hash).hexdigest()
+            hash = hashlib.sha1(hashlib.sha1(self.password).hexdigest()+token).hexdigest()
+            for foo in xrange(int(seq)): hash = hashlib.sha1(hash).hexdigest()
query.setTagData(’hash’,hash)
method=’0k’
else:
@@ -81,7 +81,7 @@ class NonSASL(PlugIn):
def authComponent(self,owner):
“”" Authenticate component. Send handshake stanza and wait for result. Returns “ok” on success. “”"
self.handshake=0
-        owner.send(Node(NS_COMPONENT_ACCEPT+’ handshake’,payload=[sha.new(owner.Dispatcher.Stream._document_attrs['id']+self.password).hexdigest()]))
+        owner.send(Node(NS_COMPONENT_ACCEPT+’ handshake’,payload=[hashlib.sha1(owner.Dispatcher.Stream._document_attrs['id']+self.password).hexdigest()]))
owner.RegisterHandler(’handshake’,self.handshakeHandler,xmlns=NS_COMPONENT_ACCEPT)
while not self.handshake:
self.DEBUG(”waiting on handshake”,’notify’)

参考:
1.  hashlib http://docs.python.org/library/hashlib.html#module-hashlib

想通过codeviz看linux kernel的调用关系, 但是codeviz用的是gcc-3.4.6,

但在用gcc-3.4.6编译linux-2.6.30的时候报错:

 drivers/net/igb/igb_main.c: In function `igb_up':
 drivers/net/igb/igb_main.c:130: sorry, unimplemented: inlining failed
 in call to 'igb_set_rah_pool': function body not available
 drivers/net/igb/igb_main.c:938: sorry, unimplemented: called from here
 drivers/net/igb/igb_main.c:133: sorry, unimplemented: inlining failed
 in call to 'igb_set_vmolr': function body not available
 drivers/net/igb/igb_main.c:939: sorry, unimplemented: called from here
 make[3]: *** [drivers/net/igb/igb_main.o] Error 1
 make[2]: *** [drivers/net/igb] Error 2
 make[1]: *** [drivers/net] Error 2
 make: *** [drivers] Error 2
 
 This is CentOS 4.x system.  While using same configuration to compile
 in CentOS 5.x systems with gcc-4.1.2 do not encounter such error and
 my guess is gcc version issue?  Any idea?

Linux-2.6.30 Linux-2.6.30.1使用gcc-3.4.6编译错误补丁:

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index be48029..adb09d3 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -127,14 +127,48 @@  static void igb_restore_vlan(struct igb_adapter *);
 static void igb_ping_all_vfs(struct igb_adapter *);
 static void igb_msg_task(struct igb_adapter *);
 static int igb_rcv_msg_from_vf(struct igb_adapter *, u32);
-static inline void igb_set_rah_pool(struct e1000_hw *, int , int);
 static void igb_set_mc_list_pools(struct igb_adapter *, int, u16);
 static void igb_vmm_control(struct igb_adapter *);
-static inline void igb_set_vmolr(struct e1000_hw *, int);
-static inline int igb_set_vf_rlpml(struct igb_adapter *, int, int);
 static int igb_set_vf_mac(struct igb_adapter *adapter, int, unsigned char *);
 static void igb_restore_vf_multicasts(struct igb_adapter *adapter);

+static inline void igb_set_vmolr(struct e1000_hw *hw, int vfn)
+{
+	u32 reg_data;
+
+	reg_data = rd32(E1000_VMOLR(vfn));
+	reg_data |= E1000_VMOLR_BAM |	 /* Accept broadcast */
+	            E1000_VMOLR_ROPE |   /* Accept packets matched in UTA */
+	            E1000_VMOLR_ROMPE |  /* Accept packets matched in MTA */
+	            E1000_VMOLR_AUPE |   /* Accept untagged packets */
+	            E1000_VMOLR_STRVLAN; /* Strip vlan tags */
+	wr32(E1000_VMOLR(vfn), reg_data);
+}
+
+static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size,
+                                 int vfn)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 vmolr;
+
+	vmolr = rd32(E1000_VMOLR(vfn));
+	vmolr &= ~E1000_VMOLR_RLPML_MASK;
+	vmolr |= size | E1000_VMOLR_LPE;
+	wr32(E1000_VMOLR(vfn), vmolr);
+
+	return 0;
+}
+
+static inline void igb_set_rah_pool(struct e1000_hw *hw, int pool, int entry)
+{
+	u32 reg_data;
+
+	reg_data = rd32(E1000_RAH(entry));
+	reg_data &= ~E1000_RAH_POOL_MASK;
+	reg_data |= E1000_RAH_POOL_1 << pool;;
+	wr32(E1000_RAH(entry), reg_data);
+}
+
 #ifdef CONFIG_PM
 static int igb_suspend(struct pci_dev *, pm_message_t);
 static int igb_resume(struct pci_dev *);
@@ -5418,43 +5452,6 @@  static void igb_io_resume(struct pci_dev *pdev)
 	igb_get_hw_control(adapter);
 }

-static inline void igb_set_vmolr(struct e1000_hw *hw, int vfn)
-{
-	u32 reg_data;
-
-	reg_data = rd32(E1000_VMOLR(vfn));
-	reg_data |= E1000_VMOLR_BAM |	 /* Accept broadcast */
-	            E1000_VMOLR_ROPE |   /* Accept packets matched in UTA */
-	            E1000_VMOLR_ROMPE |  /* Accept packets matched in MTA */
-	            E1000_VMOLR_AUPE |   /* Accept untagged packets */
-	            E1000_VMOLR_STRVLAN; /* Strip vlan tags */
-	wr32(E1000_VMOLR(vfn), reg_data);
-}
-
-static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size,
-                                 int vfn)
-{
-	struct e1000_hw *hw = &adapter->hw;
-	u32 vmolr;
-
-	vmolr = rd32(E1000_VMOLR(vfn));
-	vmolr &= ~E1000_VMOLR_RLPML_MASK;
-	vmolr |= size | E1000_VMOLR_LPE;
-	wr32(E1000_VMOLR(vfn), vmolr);
-
-	return 0;
-}
-
-static inline void igb_set_rah_pool(struct e1000_hw *hw, int pool, int entry)
-{
-	u32 reg_data;
-
-	reg_data = rd32(E1000_RAH(entry));
-	reg_data &= ~E1000_RAH_POOL_MASK;
-	reg_data |= E1000_RAH_POOL_1 << pool;;
-	wr32(E1000_RAH(entry), reg_data);
-}
-
 static void igb_set_mc_list_pools(struct igb_adapter *adapter,
 				  int entry_count, u16 total_rar_filters)
 {

参考:
1. linux-2.6.30.1 with gcc-3.4.6 compile error http://patchwork.kernel.org/patch/35402/
2. codeviz http://www.csn.ul.ie/~mel/projects/codeviz/