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‎CGI/simple-server-with-different-languages/README.md‎

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Structure
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project
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├── README.md
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├── cgi-bin
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│   ├── image.py
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│   ├── test.php
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│   ├── test.pl
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│   ├── test.py
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│   ├── test.rb
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│   ├── test.sh
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│   └── test2.php
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├── images
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│   ├── normal.png
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│   └── transparent.png
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├── index.html
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└── server.py
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# Simple CGI Server
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Normally you can start
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python3 -m http.server --cgi 8000
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and it will serve directly all files in current folder and subolfers but it will send source code for scripts. You have to put scripts in `cgi-bin` folder
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On Linux you have to set `execution attribut` for every script (ie. `chmod +x script.py`) and you have to use `shebang` in first line of script (ie. `#!/usr/bin/env python3`) because Linux doesn't care of file extensions (ie, `.py`) and it can run script without extension or with incorrect extension (ie. `script.png`)
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‎CGI/simple-server-with-different-languages/cgi-bin/image.png‎

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Loading

‎CGI/simple-server-with-different-languages/cgi-bin/image.py‎

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#!/usr/bin/env python3
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import sys
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import os
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src = "images/normal.png"
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sys.stdout.write("Content-Type: image/png\n")
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sys.stdout.write("Content-Length: " + str(os.stat(src).st_size) + "\n")
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sys.stdout.write("\n")
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sys.stdout.flush()
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sys.stdout.buffer.write(open(src, "rb").read())
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‎CGI/simple-server-with-different-languages/cgi-bin/makefile‎

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test: test.c
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gcc -o test test.c
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‎CGI/simple-server-with-different-languages/cgi-bin/test‎

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‎CGI/simple-server-with-different-languages/cgi-bin/test.c‎

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#include <stdio.h>
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int main()
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{
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int result;
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printf("Content-Type: text/html; charset=utf-8\n");
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printf("\n");
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/* "Content-Type" has to be in first line - without even empty lines */
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/* after headers have to be empty line */
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result = 1 + 2;
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printf("<!DOCTYPE html>\n\
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\n\
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<html>\n\
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\n\
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<head>\n\
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<meta charset=\"utf-8\"/>\n\
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<title>C</title>\n\
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<style>\n\
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body {background-color:#ddd; text-align: center}\n\
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</style>\n\
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</head>\n\
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\n\
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<body>\n\
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\n\
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<h1>C</h1>\n\
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\n\
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<h2>1 + 2 = %i</h2>\n\
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\n\
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<a href=\"/images/transparent.png\"><img src=\"/images/transparent.png\"><br/>/images/transparent.png</a><br/>\n\
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<br/>\n\
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\n\
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<a href=\"/cgi-bin/image.png\"><img src=\"/cgi-bin/image.png\"><br/>/cgi-bin/image.png</a><br/>\n\
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(python script with extension .png)<br/>\n\
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\n\
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</body>\n\
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\n\
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</html>", result);
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return 0;
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}
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/* it needs ' \" ' */

‎CGI/simple-server-with-different-languages/cgi-bin/test.pl‎

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#!/usr/bin/env perl
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print "Content-Type: text/html; charset=utf-8\n";
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print "\n";
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# "Content-Type" has to be in first line - without even empty lines
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# after headers have to be empty line
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$result = 1 + 2;
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print <<ENDHTML
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8"/>
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<title>Perl</title>
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<style>
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body {background-color:#ddd; text-align: center}
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</style>
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</head>
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<body>
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<h1>PERL</h1>
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<h2>1 + 2 = $result</h2>
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<a href="/images/transparent.png"><img src="/images/transparent.png"><br/>/images/transparent.png</a><br/>
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<br/>
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<a href="/cgi-bin/image.png"><img src="/cgi-bin/image.png"><br/>/cgi-bin/image.png</a><br/>
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(python script with extension .png)<br/>
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</body>
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</html>
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ENDHTML

‎CGI/simple-server-with-different-languages/cgi-bin/test.py‎

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#!/usr/bin/env python3
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print("Content-Type: text/html; charset=utf-8")
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print()
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# "Content-Type" has to be in first line - without even empty lines
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# after headers have to be empty line (another print() or "\n")
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result = 1 + 2
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print('''<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8"/>
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<title>Python</title>
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<style>
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body {{background-color:#ddd; text-align: center}}
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</style>
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</head>
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<body>
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<h1>PYTHON</h1>
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<h2>1 + 2 = {}</h2>
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<a href="/images/transparent.png"><img src="/images/transparent.png"><br/>/images/transparent.png</a><br/>
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<br/>
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<a href="/cgi-bin/image.png"><img src="/cgi-bin/image.png"><br/>/cgi-bin/image.png</a><br/>
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(python script with extension .png)<br/>
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</body>
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</html>'''.format(result))
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# style needs `{{ }}` instead of `{ }` because `format()` uses `{ }`

‎CGI/simple-server-with-different-languages/cgi-bin/test.rb‎

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#!/usr/bin/env ruby
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puts "Content-Type: text/html; charset=utf-8\n"
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puts "\n"
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# "Content-Type" has to be in first line - without even empty lines
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# after headers have to be empty line "\n"
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result = 1 + 2
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puts <<ENDHTML
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8"/>
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<title>Ruby</title>
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<style>
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body {background-color:#ddd; text-align: center}
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</style>
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</head>
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<body>
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<h1>RUBY</h1>
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<h2>1 + 2 = #{result}</h2>
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<a href="/images/transparent.png"><img src="/images/transparent.png"><br/>/images/transparent.png</a><br/>
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<br/>
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<a href="/cgi-bin/image.png"><img src="/cgi-bin/image.png"><br/>/cgi-bin/image.png</a><br/>
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(python script with extension .png)<br/>
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</body>
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</html>
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ENDHTML

‎CGI/simple-server-with-different-languages/cgi-bin/test.sh‎

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#!/bin/sh
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echo "Content-Type: text/html; charset=utf-8\n"
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echo "\n"
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# "Content-Type" has to be in first line - without even empty lines
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# after headers have to be empty line "\n"
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result=$((1+2))
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echo '<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8"/>
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<title>Bash</title>
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<style>
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body {background-color:#ddd; text-align: center}
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</style>
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</head>
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<body>
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<h1>BASH</h1>
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<h2>1 + 2 = '$result'</h2>
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<a href="/images/transparent.png"><img src="/images/transparent.png"><br/>/images/transparent.png</a><br/>
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<br/>
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<a href="/cgi-bin/image.png"><img src="/cgi-bin/image.png"><br/>/cgi-bin/image.png</a><br/>
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(python script with extension .png)<br/>
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</body>
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</html>'
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# Bash can use variable only in " ",
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# but I use " " inside text so I need ' '

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