PHP-client Plugins Checks httpcontent

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Table of Contents

HttpContent

Description

This check verifies if a given url can be requested. Optionally you can test if it follows wanted rules:

  • specific http status code
  • http response header / response body contains/ not containtains given text text
  • http response header / response body matches a given regex

Syntax

$oMonitor->addCheck(
    [
        "name" => "HttpContent 1",
        "description" => "check if the example website sends a response",
        "check" => [
            "function" => "HttpContent",
            "params" => [
                "url" => "http://www.example.com/",
                "[option]" => "[see parameters table]",
            ],
        ],
    ]
);

Parameters

key type description
url🔸 (string) url to fetch
userpwd (string) set user and password; syntax: “[username]:[password]”
timeout (integer) optional timeout in sec; default: 5
headeronly (boolean) optional flag to fetch http response herader only (HEAD request); default: false = returns header and body;
follow (boolean) optional flag to follow a location; default: false = do not follow; If you set it to true it ries to follow (but this is not a safe method)
sslverify boolean flag: enable/ disable verification of ssl certificate; default: true (verification is on)
status (integer) test for an expected http status code; if none is given then test fails on status 400 and greater
headercontains (string) test for a string in the http response header; it returns OK if the text was found
headernotcontains (string) test for a string in the http response header; it returns OK if the text was not found
headerregex (string) test for a regex in the http response header; it returns OK if the regex matches
bodycontains (string) test for a string in the http response body; it returns OK if the text was found
bodynotcontains (string) test for a string in the http response body; it returns OK if the text was not found
bodyregex (string) test for a regex in the http response body; it returns OK if the regex matches;

🔸 required

Remarks:

The checks for text strings are case sensitive. If you need a case insensitive test use a regex with “i” modifyer like in example 3.

Examples

Example 1

Check if a http reponse is successful.

$oMonitor->addCheck(
    [
        "name" => "HttpContent 1",
        "description" => "check if the example website sends a response",
        "check" => [
            "function" => "HttpContent",
            "params" => [
                "url" => "http://www.example.com/",
            ],
        ],
    ]
);

Example 2

Check if a http reponse is successful and contains a wanted text.

$oMonitor->addCheck(
    [
        "name" => "HttpContent 1",
        "description" => "check if the example website sends a response and contains hello in the text",
        "check" => [
            "function" => "HttpContent",
            "params" => [
                "url" => "http://www.example.com/",
                "bodycontains" => "hello",
            ],
        ],
    ]
);

Example 3

Check availability of an api using user and password. $aConfig["awx"] is an example configuration hash with subkeys url, user and pasword.

if(isset($aConfig['awx']) && isset($aConfig['awx']['url'])){

    $oMonitor->addCheck(
        [
            "name" => "AWX API",
            "description" => "check if AWX api is available",
            "group" => "network",
            "check" => [
                "function" => "HttpContent",
                "params" => [
                    ['url'] => $aConfig['awx']['url'],
                    ['userpwd'] => $aConfig['awx']['user'].':'.$aConfig['awx']['password'],
                ],
            ],
        ]
    );
}

Example 4

Check the status code: Is the http status a 307 and points to a wanted target?

$oMonitor->addCheck(
    [
        "name" => "HttpContent 2",
        "description" => "check if the example website is a redirect with 307",
        "check" => [
        "function" => "HttpContent",
            "params" => [
                "url" => "https://www.example.com/redirect",
                "headeronly" => true,
                "status" => 307,
                "headerregex" => "#Location: https://www.example.com/mytarget#i",
            ],
        ],
    ]
);

In the same way - by setting a status code to 40x - you also can check if sensitive information is not accessible.

$oMonitor->addCheck(
    [
        "name" => "Secure config",
        "description" => "check if config is not readable wit a browser",
        "check" => [
        "function" => "HttpContent",
            "params" => [
                "url" => "https://www.example.com/config/sample.json",
                "headeronly" => true,
                "status" => 403,
            ],
        ],
    ]
);