terminator | Service Virtualization | Infrastructure Automation library

(this question is all about theory).

quick doubt, I don't know what to do: I need to do a malloc to store a string of its length plus 1 zero-terminator. Therefore I have to write: char* str = malloc(length + 1), and in order to avoid buffer overflow/buffer overrun, I've thought about this solution:

I am using a C library which uses various fixed-sized unsigned char arrays with no null terminator as strings.

I've been converting them to std::string using the following function:

I'm tring to connect to AWS4 Signature method for authentication. (https://orderhive.docs.apiary.io/#introduction/api-requirements/end-point)

My id_token and refresh_token retreive the access_key_id, secret_key, and session_token. But when I try to retreive some information like the warehouse, I receive each time:

"message":"The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details.

The String-to-Sign should have been
'AWS4-HMAC-SHA256 20211217T160055Z 20211217/us-east-1/execute-api/aws4_request 8e3dbc663f97508406c4825b74a647765022ae021fa224754701722b7bcf2288'

And I am using this code like others have done before me in some example.

I'm parsing a language that doesn't have statement terminators like ;. Expressions are defined as the longest sequence of tokens, so 5-5 has to be parsed as a subtraction, not as two statements (literal 5 followed by a unary negated -5).

I'm using LALRPOP as the parser generator (despite the name, it is LR(1) instead of LALR, afaik). LALRPOP doesn't have precedence attributes and doesn't prefer shift over reduce by default like yacc would do. I think I understand how regular operator precedence is encoded in an LR grammar by building a "chain" of rules, but I don't know how to apply that to this issue.

The expected parses would be (individual statements in brackets):

I wrote a small program to explore out-of-bounds reads vulnerabilities in C to better understand them; this program is intentionally buggy and has vulnerabilities:

I am trying to add Simplebar scrollbar to the MUI Material Autocomplete component, instead of the default browser one. All works but doing that I've lost the ability to navigate the options list with the keyboard.

There is this snippet from the MUI docs

ListboxComponent If you provide a custom ListboxComponent prop, you need to make sure that the intended scroll container has the role attribute set to listbox. This ensures the correct behavior of the scroll, for example when using the keyboard to navigate.

But I have no idea how to do that.

The following code is from the MUI docs, first autocomplete example with custom ListboxComponenet and shortened movie list. (https://mui.com/components/autocomplete/)

In Python ctypes, when, if ever, do you need to manually add the null/zero b'\0' terminator when passing bytes to a function that expects null terminated data?

Specifically for the 3 cases (but others welcome)

• If the function parameter has been declared with c_char_p via its argtypes

• If the function has not had its parameter declared via argtypes

• Using memmove, if the interface expects a null terminated string at a memory address,

  ...

I have to create a function (trim function) who can perform this task: taking a null terminated string and if at the 0-th position of the string there's a whitespace, remove that whitespace. Same thing if the whitespace is at the end of the string (before the zero terminator). Therefore, basically the function ignores the whitespaces in the middle of the string.

Here is what I tried to do so far, (1) I passed " a b " string to trim function. (2) (null pointer check). (3) I took the length of the string by using strlen function.

(4) (this is the delicate part, because debugging line-by-line I found a strange error inside the for loop).

the error is this: when debugger runs the first line of the for loop, it goes inside the loop as expected; okay, that's fine, but when the debugger runs the if check, it should be true (because at the beginning of the string there's a whitespace) and the function is supposed to go in the if body, in the first if statement, and reallocate the memory. But that's not true, because realloc is never executed. Why?

(the function must return the pointer to the reallocated memory).

another error is that "s" isn't initialized but I used it anyway, and that's not true because I initialized s with " a b " string.

I'm currently getting into linux and want to write a bash script which sets up a new machine just the way I want it to be.

In order to do that I want to install differnt things on it etc.

What I'm trying to achieve here is to have a setting at the top of the bash script which will make apt accept all [y/n] questions asked during the execution of the script

Question example I want to automatically accept:

After this operation, 1092 kB of additional disk space will be used. Do you want to continue? [Y/n]

I just started creating the file so here is what i have so far: