cytopia / check_http_expect
Nagios plugin to check for a string/regex on a webpage. Also works behind .htaccess and POST login.
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Last update: 2024-10-16 19:24:30 UTC
README
Nagios plugin that will check a website (behind .htacess and/or behind POST login) for an expected string based on a simple string or regex expression.
1. Usage
Usage: check_http_expect --url <url> --find <string> [--find <another string>] [--huser <user>] [--hpass <pass>] [--lurl <url>] [--cookie <cookie-string> [--cookie <cookie-string>]] [--ldata <data> [--ldata <data>]] --url Target URL --find Find string in source of Target URL ('grep -E'-style regex allowed / can be specified multiple times) --huser (Optional) htaccess username --hpass (Optional) htaccess password --lurl (Optional) Url for POST login --ldata (Optional) POST data (can be specified multiple times) --cookie (Optional) set cookies for request --ua (Optional) use this user-agent instead of the default one
2. Generic Examples
2.1 Search simple string
Check if a website contains the word google
$ check_http_expect --url https://google.com --find google [OK] 1 match found for: "google". Http version: HTTP/1.1 Http code: 302 Http info: Found Server: GFE/2.0 Url: https://google.com Search: google Num matches: 1 Matches: ---------------------------------------- <A HREF=https://www.google.de/?gfe_rd=cr&ei=B9AxVr7RJerj8weKoa2IBA>here</A>
2.2 Search via regex
Check if a website contains the the following regex [0-9]+
$ check_http_expect --url https://google.com --find '[0-9]+' [OK] 4 matches found for: "[0-9]+". Http version: HTTP/1.1 Http code: 302 Http info: Found Server: GFE/2.0 Url: https://google.com Search: [0-9]+ Num matches: 4 Matches: ---------------------------------------- <HTML><HEAD><meta http-equiv=content-type content=text/html;charset=utf-8> <TITLE>302 Moved</TITLE></HEAD><BODY> <H1>302 Moved</H1> <A HREF=https://www.google.de/?gfe_rd=cr&ei=Q9AxVs-AAurj8weKoa2IBA>here</A>.
2.3 .htaccess protection
Check behind a .htaccess protected website for the string Your site is secured
$ check_http_expect --url "http://www.example.com" --find 'Your site is secured' --huser john --hpass "Password"
[ERROR] No matches found for: "Your site is secured".
Http version: HTTP/1.1
Http code: 302
Http info: Found
Server: Apache/2.4.16 (Amazon) PHP/5.5.30
Url: http://www.example.com
Search: Your site is secured
Num matches: 0
Matches:
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2.4 POST Login
Login to at http://www.example.com/login.php with POST data usernameFieldName=John, passwordFieldName=pass, submit=1, go to http://www.example.com and check for the regex [0-9]+
$ check_http_expect --url "http://www.example.com" --find '[0-9]+' --lurl "http://www.example.com/login.php" --ldata "usernameFieldName=John" --ldata "passwordFieldName=pass" --ldata "submit=1"
[ERROR] No matches found for: "[0-9]+".
Http version: HTTP/1.1
Http code: 302
Http info: Found
Server: Apache/2.4.16 (Amazon) PHP/5.5.30
Url: http://www.example.com
Search: Your site is secured
Num matches: 0
Matches:
Note: htaccess and POST login can also be combined.
2.5 Set Cookies
Send a request with a custom cookie
$ check_http_expect --url https://google.com --find google --cookie "username=test" [OK] 1 match found for: "google". Http version: HTTP/1.1 Http code: 302 Http info: Found Server: GFE/2.0 Url: https://google.com Search: google Num matches: 1 Matches: ---------------------------------------- <A HREF=https://www.google.de/?gfe_rd=cr&ei=B9AxVr7RJerj8weKoa2IBA>here</A>
2.6 Multiple Search-Strings and different user-agent
When searching for multiple strings on the same page, its not necessary to do multiple requests.
Just specify as many find-parameters as you need.
You may want to change the user-agent with the parameter ua as well, in order to avoid undesired redirects.
$ check_hmg_http_expect --url "https://duckduckgo.com" --find "<title>DuckDuckGo — Privacy, simplified.</title>" --find "<span class=\"logo_homepage__tt\">Duck it\!</span>" --find "NO-MATCH" --ua "curl/7.37.0" [WARN] Not all matches found for: "<title>DuckDuckGo — Privacy, simplified.</title> <span class="logo_homepage__tt">Duck it\!</span> NO-MATCH" | 'Results'=2 but expected: 3 Http version: HTTP/2 Http code: 200 Http info: Server: Url: https://duckduckgo.com Search: <title>DuckDuckGo — Privacy, simplified.</title> <span class="logo_homepage__tt">Duck it\!</span> NO-MATCH Num matches: 2 Matches: ---------------------------------------- <title>DuckDuckGo — Privacy, simplified.</title> <span class="logo_homepage__tt">Duck it!</span>
If only some of the specified search-strings are matched, then a warning is returned.
3. Specific Examples
3.1 Log into wordpress.com
Find String in Wordpress.com dashboard
$ check_http_expect --url "https://dashboard.wordpress.com/wp-admin/" --find "Recently Published" --lurl "https://wordpress.com/wp-login.php" --ldata "log=USER@EMAIL" --ldata "pwd=PASSWORD" --ldata "rememberme=forever" --ldata "testcookie=1" [OK] 1 match found for: "Recently Published". Http version: HTTP/1.1 Http code: 200 Http info: OK Server: nginx Url: https://dashboard.wordpress.com/wp-admin/ Search: Recently Published Num matches: 1 Matches: ---------------------------------------- <div id=activity-widget><div id=published-posts class=activity-block><h4>Recently Published</h4><ul><li><span>Feb 20th, 1:41 am</span> <a href=https://dashboard.wordpress.com/2014/02/20/test/>Test</a></li><li><span>Jun 2nd, 6:10 pm</span> <a href=https://dashboard.wordpress.com/2011/06/02/life-would-be-so-different-if-everyone-j/>Life would be so different if everyone j</a></li><li><span>Jun 1st, 10:08 pm</span> <a href=https://dashboard.wordpress.com/2011/06/01/for-those-of-you-who-are-still-paying-re/>for those of you who are still paying re</a></li><li><span>Jun 1st, 9:52 pm</span> <a href=https://dashboard.wordpress.com/2011/06/01/having-a-great-day-so-far-and-i-hope-all/>Having a great day so far and I hope all</a></li><li><span>May 26th, 10:37 pm</span> <a href=https://dashboard.wordpress.com/2011/05/26/in-this-video-you-will-find-out-how-to-r/>In this video you will find out how to r</a></li></ul></div></div></div>
4. Awesome
Added by the following lists: