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9-4 Number of diners: In the program written to complete Exercise 9-1, add an attribute named number_served and set its default value to 0. Create an instance named restaurant from this class; Print how many people have eaten in this restaurant, then modify this value and print it again. ?For the convenience of the experiment, we directly use the functions in libc.so.6 as the attack functions to be executed. This is a C program runtime in Linux, which holds a large number of available functions and contains system ("/bin/sh"). Therefore, we can use ROPgadget tool to obtain the code fragments that we can exploit, and use pwntool to exploit the vulnerabilities of vulnerable programs, thus achieving our attack purpose, that is, running system ("/bin/sh"). In order to facilitate the subsequent use of ROPgadget tool to find gadget and attack, it is necessary to copy the libc.so.6 file to the operation directory. First, use the "ldd" command to view the source directory, and then use the "cp" command to copy it to the operation directory.一个人的城市 寻找两个人的温暖 在繁华与孤单的临界 谁来把瞬间温暖的花火幻做永恒 泡芙小姐第二季全情回归 一切让爱做主故事发生在华莱士大学校园中，核心是一个虚构的Kappa女生联谊会。本剧从1995年的一段回忆情节开始，那一年联谊会发生了一些可怕的事情，但问题从未解决。20年之后，有人打算报仇。观众将在第一集中看到所有重要角色，然后一场血腥屠杀开始了，这些角色一个一个死去。 Validator.add (registerForm.userName, [{strategy: 'isNotEmpty', errorMsg: 'User name cannot be empty'}, {strategy: 'min Length: 6', errorMsg: 'User name cannot be less than 6 bits long'}])The four modes in the above article are all configured in mainfest's xml file, and GoogleAndroid team also provides another higher-level setting method, that is, setting the startup mode through Intent.setFlags (int flags);This dangerous confidence belongs to the second level.