https://github.com/barrettotte/http-asm64

The most basic HTTP Server written in x86 Assembly
https://github.com/barrettotte/http-asm64

asm assembly assembly-language assembly-x86-64 http http-server nasm nasm-assembly

Last synced: about 1 month ago
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The most basic HTTP Server written in x86 Assembly

• Host: GitHub
• URL: https://github.com/barrettotte/http-asm64
• Owner: barrettotte
• Created: 2018-09-29T21:18:19.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2018-09-30T16:51:29.000Z (over 6 years ago)
• Last Synced: 2023-03-05T21:16:29.635Z (almost 2 years ago)
• Topics: asm, assembly, assembly-language, assembly-x86-64, http, http-server, nasm, nasm-assembly
• Language: Assembly
• Homepage:
• Size: 179 KB
• Stars: 14
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# HTTP-ASM64

The most basic HTTP Server written in 64-bit Assembly with NASM Assembler. 

Currently it is extremely primitive

and is **only able to serve a single page, index.html**

## Learned

* Switching from MASM in Windows to NASM in Linux

* Basics of NASM and 64-bit Assembly

* How to use Linux system calls

* How to use Sockets

* Refresh on Assembly in general

* Basics of MakeFiles

## Setup

* Dependencies ```sudo apt-get -y install nasm build-essential```

* Assembling+Linking+Running ```make build && ./server``` or ```./Run-NASM.sh server.asm```

* Listening on http://127.0.0.1:3926

## Screenshots

[![console](https://github.com/barrettotte/HTTP-ASM64/blob/master/screenshots/console.png)](https://github.com/barrettotte/HTTP-ASM64/blob/master/screenshots/console.png)

[![index](https://github.com/barrettotte/HTTP-ASM64/blob/master/screenshots/index.png)](https://github.com/barrettotte/HTTP-ASM64/blob/master/screenshots/index.png)

[![firefox-console](https://github.com/barrettotte/HTTP-ASM64/blob/master/screenshots/firefox-console.png)](https://github.com/barrettotte/HTTP-ASM64/blob/master/screenshots/firefox-console.png)

## To Do Eventually ... Maybe?

* Refactor duplicate code

* Make Utils.asm and export functions

* Proper 404 message handling

* 404 Error Page

* Multiple file handling for external css,js, more html files, images, etc.

* Proper socket shutdown

* POST method handling

## Source Dump

* GNU C Sockets Documentation http://www.delorie.com/gnu/docs/glibc/libc_301.html

* Linux Socket Man Pages http://man7.org/linux/man-pages

* Linux System Calls Reference https://filippo.io/linux-syscall-table/

* Assembly(x86) Cheatsheet https://github.com/cirosantilli/x86-assembly-cheat

* Quick Reference https://www.cs.uaf.edu/2017/fall/cs301/reference/x86_64.html

* Connecting a socket in C http://wiki.linuxquestions.org/wiki/Connecting_a_socket_in_C

* IP to DWORD

  https://stackoverflow.com/questions/5328070/how-to-convert-string-to-ip-address-and-vice-versa

```c++

char strAddr[] = "127.0.0.1"

DWORD ip = inet_addr(strAddr); // ip contains 16777343 [0x0100007f in hex]

struct in_addr paddr;

paddr.S_un.S_addr = ip;

char *strAdd2 = inet_ntoa(paddr); // strAdd2 contains the same string as strAdd

  ```

* Converting hex+decimal https://www.scadacore.com/tools/programming-calculators/online-hex-converter/

* System calls for network functionality http://beej.us/net2/html/syscalls.html

* AF_INET https://stackoverflow.com/questions/1593946/what-is-af-inet-and-why-do-i-need-it

* sys_setsockopt() http://pubs.opengroup.org/onlinepubs/009695399/functions/setsockopt.html

* HTTP Messages https://en.wikipedia.org/wiki/HTTP_message_body