CGI

The module adds support for CGI.

It is important to note that CGI is not suitable for:

• high QPS;

• heavy traffic;

• high concurrency.

Loading the Module

To load the module in the context of main{}:

load_module modules/ngx_http_cgi_module.so;

Configuration Example

server {
    listen 80;

    root /usr/share/angie/html;
    index index.html index.htm;

    location / {
        try_files $uri $uri/ =404;
    }

    location /cgi {
        alias /usr/share/angie/cgi-bin;
        cgi on;
    }
}

Test Script

An example test executable script test.sh:

#!/bin/sh
echo "Content-Type: text/plain" # Add header to the response
echo "" # Separator between headers and body of the response

# Environment variables
echo "query string: $QUERY_STRING"
echo "server addr: $SERVER_ADDR"
echo "server port: $SERVER_PORT"

# Request headers via environment variables
echo "http host: $HTTP_HOST"
echo "http accept: $HTTP_ACCEPT"
echo "http Some-Field: $HTTP_SOME_FIELD"

body=$(cat) # Reads the body of the request into a variable
echo "Request body: $body"

Placing the Script

According to the configuration, the script must be placed in the directory /usr/share/angie/cgi-bin/. The file must have read and execute permissions.

Example of Request Execution

$ curl  -H 'Some-Field:some text' -d '{"key1":"value1", "key2":"value2"}' -i \
  'http://127.0.0.1/cgi/hello.sh?a=valueA&b=valueB'

HTTP/1.1 200 OK
Server: Angie/1.8.3
Date: Tue, 04 Mar 2025 09:15:35 GMT
Transfer-Encoding: chunked
Connection: keep-alive
Content-Type: text/plain

query string: a=valueA&b=valueB
server addr: 127.0.0.1
server port: 80
http host: 127.0.0.1
http accept: */*
http Some-Field: some text
Request body: {"key1":"value1", "key2":"value2"}

Additional Information

Detailed documentation and source code are available at: pjincz/nginx-cgi