Configuring Apache CGI on OpenWRT Linux (Apache Users)

Hello everyone,

After my previous email, I changed gears and switched to just enabling the CGI but I ran into a different problem.

Apache “It Works” is displayed when I visit 192.168.1.50:8080
Browser displays “500 Internal Server Error, The server encountered an internal error or misconfiguration and was unable to complete your request” error when I try to visit the test CGI file (index.cgi)

Thank you for looking and I appreciate ahead of time.

root@OpenWrt:/# php-cgi -v

PHP 7.2.34 (cgi-fcgi)

root@OpenWrt:/# whereis php-cgi

php-cgi: /usr/bin/php-cgi

root@OpenWrt:/# cat /usr/share/apache2/htdocs/index.php

<?php

phpinfo();

root@OpenWrt:/# apache2 -v

Server version: Apache/2.4.46 (Unix)

Server built:

root@OpenWrt:/#

PHP CGI File (index.cgi):

#!/usr/bin/php-cgi

<?php

phpinfo();

Apache Error Log:

[Thu Dec 31 19:28:04.173067 2020] [authz_core:debug] [pid 2546] mod_authz_core.c(818): [client 192.168.2.176:59906] AH01626: authorization result of Require all granted: granted

[Thu Dec 31 19:28:04.173661 2020] [authz_core:debug] [pid 2546] mod_authz_core.c(818): [client 192.168.2.176:59906] AH01626: authorization result of <RequireAny>: granted

[Thu Dec 31 19:28:04.221841 2020] [cgid:error] [pid 2546] [client 192.168.2.176:59906] malformed header from script 'indexo.php': Bad header: Security Alert! The PHP

General File Locations:

Test PHP File -> /usr/share/apache2/htdocs/index.php

Apache Error Log -> /var/log/apache2/error_log

Apache Config File -> /etc/apache2

Apache Modules -> /usr/lib/apache2

PHP INI File -> /etc/php.ini

PHP Packages -> php7, php7-cgi

Apache Config File: (The Action statement is the last line)

ServerRoot "/usr"

Listen 192.168.1.50:8080

LoadModule mpm_prefork_module lib/apache2/mod_mpm_prefork.so

LoadModule authn_file_module lib/apache2/mod_authn_file.so

LoadModule authn_core_module lib/apache2/mod_authn_core.so

LoadModule authz_host_module lib/apache2/mod_authz_host.so

LoadModule authz_groupfile_module lib/apache2/mod_authz_groupfile.so

LoadModule authz_user_module lib/apache2/mod_authz_user.so

LoadModule authz_core_module lib/apache2/mod_authz_core.so

LoadModule access_compat_module lib/apache2/mod_access_compat.so

LoadModule auth_basic_module lib/apache2/mod_auth_basic.so

LoadModule reqtimeout_module lib/apache2/mod_reqtimeout.so

LoadModule filter_module lib/apache2/mod_filter.so

LoadModule mime_module lib/apache2/mod_mime.so

LoadModule log_config_module lib/apache2/mod_log_config.so

LoadModule log_debug_module lib/apache2/mod_log_debug.so

LoadModule env_module lib/apache2/mod_env.so

LoadModule headers_module lib/apache2/mod_headers.so

LoadModule setenvif_module lib/apache2/mod_setenvif.so

LoadModule version_module lib/apache2/mod_version.so

LoadModule unixd_module lib/apache2/mod_unixd.so

LoadModule status_module lib/apache2/mod_status.so

LoadModule autoindex_module lib/apache2/mod_autoindex.so

LoadModule cgid_module lib/apache2/mod_cgid.so

LoadModule cgi_module lib/apache2/mod_cgi.so

LoadModule dir_module lib/apache2/mod_dir.so

LoadModule actions_module lib/apache2/mod_actions.so

LoadModule alias_module lib/apache2/mod_alias.so

LoadModule rewrite_module lib/apache2/mod_rewrite.so

User apache

Group apache

</IfModule>

ServerAdmin you@xxxxxxxxxxx

AllowOverride none

Require all denied

</Directory>

DocumentRoot "/usr/share/apache2/htdocs"

Options Indexes FollowSymLinks

AllowOverride None

Require all granted

</Directory>

DirectoryIndex index.html

</IfModule>

Require all denied

</Files>

ErrorLog "/var/log/apache2/error_log"

LogLevel debug

LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined

LogFormat "%h %l %u %t \"%r\" %>s %b" common

LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio

</IfModule>

CustomLog "/var/log/apache2/access_log" common

</IfModule>

ScriptAlias /cgi-bin/ "/usr/share/apache2/cgi-bin/"

ScriptAlias /php/ “/usr/bin/”

</IfModule>

#Scriptsock cgisock

</IfModule>

AllowOverride None

Options +ExecCGI

AddHandler cgi-script .cgi .php .py

Require all granted

</Directory>

AllowOverride None

Options none

Require all granted

</Directory>

RequestHeader unset Proxy early

</IfModule>

TypesConfig /etc/apache2/mime.types

AddType application/x-compress .Z

AddType application/x-gzip .gz .tgz

AddType application/x-httpd-php .php

</IfModule>

Include /etc/apache2/extra/proxy-html.conf

</IfModule>

SSLRandomSeed startup builtin

SSLRandomSeed connect builtin

</IfModule>

PHP INI File:

[PHP]

zend.ze1_compatibility_mode = Off

; Language Options

engine = On

;short_open_tag = Off

precision = 12

y2k_compliance = On

output_buffering = Off

;output_handler =

zlib.output_compression = Off

;zlib.output_compression_level = -1

;zlib.output_handler =

implicit_flush = Off

unserialize_callback_func =

serialize_precision = 100

;open_basedir =

disable_functions =

disable_classes =

; Colors for Syntax Highlighting mode. Anything that's acceptable in

; would work.

;highlight.string = #DD0000

;highlight.comment = #FF9900

;highlight.keyword = #007700

;highlight.bg = #FFFFFF

;highlight.default = #0000BB

;highlight.html = #000000

;ignore_user_abort = On

;realpath_cache_size = 16k

;realpath_cache_ttl = 120

; Miscellaneous

expose_php = On

; Resource Limits

max_execution_time = 30 ; Maximum execution time of each script, in seconds.

max_input_time = 60 ; Maximum amount of time each script may spend parsing request data.

;max_input_nesting_level = 64

memory_limit = 8M ; Maximum amount of memory a script may consume.

; Error handling and logging

; Error Level Constants:

; E_ALL - All errors and warnings (includes E_STRICT as of PHP 6.0.0)

; E_ERROR - fatal run-time errors

; E_RECOVERABLE_ERROR - almost fatal run-time errors

; E_WARNING - run-time warnings (non-fatal errors)

; E_PARSE - compile-time parse errors

; E_NOTICE - run-time notices (these are warnings which often result

; from a bug in your code, but it's possible that it was

; intentional (e.g., using an uninitialized variable and

; relying on the fact it's automatically initialized to an

; empty string)

; E_STRICT - run-time notices, enable to have PHP suggest changes

; to your code which will ensure the best interoperability

; and forward compatibility of your code

; E_CORE_ERROR - fatal errors that occur during PHP's initial startup

; E_CORE_WARNING - warnings (non-fatal errors) that occur during PHP's

; initial startup

; E_COMPILE_ERROR - fatal compile-time errors

; E_COMPILE_WARNING - compile-time warnings (non-fatal errors)

; E_USER_ERROR - user-generated error message

; E_USER_WARNING - user-generated warning message

; E_USER_NOTICE - user-generated notice message

; E_DEPRECATED - warn about code that will not work in future versions

; of PHP

; E_USER_DEPRECATED - user-generated deprecation warnings

;

; Common Values:

; E_ALL & ~E_NOTICE (Show all errors, except for notices and coding standards warnings.)

; E_ALL & ~E_NOTICE | E_STRICT (Show all errors, except for notices)

; E_COMPILE_ERROR|E_RECOVERABLE_ERROR|E_ERROR|E_CORE_ERROR (Show only errors)

; E_ALL | E_STRICT (Show all errors, warnings and notices including coding standards.)

; Default Value: E_ALL & ~E_NOTICE

error_reporting = E_ALL & ~E_NOTICE & ~E_STRICT

display_errors = On

display_startup_errors = Off

log_errors = Off

log_errors_max_len = 1024

ignore_repeated_errors = Off

ignore_repeated_source = Off

report_memleaks = On

;report_zend_debug = 0

track_errors = Off

;html_errors = Off

;docref_root = "/phpmanual/"

;docref_ext = .html

;error_prepend_string = ""

;error_append_string = ""

; Log errors to specified file.

;error_log = /var/log/php_errors.log

; Log errors to syslog.

;error_log = syslog

; Data Handling

;arg_separator.output = "&"

;arg_separator.input = ";&"

variables_order = "EGPCS"

request_order = "GP"

register_globals = Off

register_long_arrays = Off

register_argc_argv = On

auto_globals_jit = On

post_max_size = 8M

;magic_quotes_gpc = Off

magic_quotes_runtime = Off

magic_quotes_sybase = Off

auto_prepend_file =

auto_append_file =

default_mimetype = "text/html"

;default_charset = "iso-8859-1"

;always_populate_raw_post_data = On

; Paths and Directories

; UNIX: "/path1:/path2"

;include_path = ".:/php/includes"

doc_root =

user_dir =

extension_dir = "/usr/lib/php"

enable_dl = On

;cgi.force_redirect = 1

;cgi.nph = 1

;cgi.redirect_status_env = ;

cgi.fix_pathinfo=1

;fastcgi.impersonate = 1;

;fastcgi.logging = 0

;cgi.rfc2616_headers = 0

; File Uploads

file_uploads = On

upload_tmp_dir = "/tmp"

upload_max_filesize = 2M

max_file_uploads = 20

; Fopen wrappers

allow_url_fopen = On

allow_url_include = Off

;from="john@xxxxxxx"

;user_agent="PHP"

default_socket_timeout = 60

;auto_detect_line_endings = Off