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[2004-02-04 23:21 UTC] devel at vesaria dot com
Description: ------------ When a client makes a regular request, PHP handles the session fine. However, when the client sends a Referer header as well, PHP and sends a new session cookie, and doesn't carry over the session data. Note that this only happens if the Referer header is sent, not if other headers are sent. This has been confirmed by direct netcat connections, as well as several browsers. $ nc localhost 80 -v localhost [127.0.0.1] 80 (http) open GET / HTTP/1.0 HTTP/1.1 200 OK Date: Thu, 05 Feb 2004 03:57:00 GMT Server: Apache/1.3.27 (Unix) (Red-Hat/Linux) mod_gzip/1.3.26.1a mod_ssl/2.8.12 OpenSSL/0.9.6b Vary: * Set-Cookie: PHPSESSID=5d0966fbcc5296708b88917b5a2fbf1f; path=/ Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Connection: close Content-Type: text/html <html><head><title> $ nc localhost 80 -v localhost [127.0.0.1] 80 (http) open GET / HTTP/1.0 Cookie: PHPSESSID=5d0966fbcc5296708b88917b5a2fbf1f Referer: http://some.other.site/ HTTP/1.1 200 OK Date: Thu, 05 Feb 2004 03:57:47 GMT Server: Apache/1.3.27 (Unix) (Red-Hat/Linux) mod_gzip/1.3.26.1a mod_ssl/2.8.12 OpenSSL/0.9.6b Vary: * Set-Cookie: PHPSESSID=13dcdd68d0b27bbe04bb4f17a8407d23; path=/ Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Connection: close Content-Type: text/html <html><head><title> $ nc localhost 80 -v localhost [127.0.0.1] 80 (http) open GET / HTTP/1.0 Cookie: PHPSESSID=5d0966fbcc5296708b88917b5a2fbf1f X-Header: just another http header HTTP/1.1 200 OK Date: Thu, 05 Feb 2004 03:58:25 GMT Server: Apache/1.3.27 (Unix) (Red-Hat/Linux) mod_gzip/1.3.26.1a mod_ssl/2.8.12 OpenSSL/0.9.6b Vary: * Set-Cookie: PHPSESSID=5d0966fbcc5296708b88917b5a2fbf1f; path=/ Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Connection: close Content-Type: text/html <html><head><title> [Session] ; Handler used to store/retrieve data. session.save_handler = files ; Argument passed to save_handler. In the case of files, this is the path ; where data files are stored. Note: Windows users have to change this ; variable in order to use PHP's session functions. ; ; As of PHP 4.0.1, you can define the path as: ; ; session.save_path = "N;/path" ; ; where N is an integer. Instead of storing all the session files in ; /path, what this will do is use subdirectories N-levels deep, and ; store the session data in those directories. This is useful if you ; or your OS have problems with lots of files in one directory, and is ; a more efficient layout for servers that handle lots of sessions. ; ; NOTE 1: PHP will not create this directory structure automatically. ; You can use the script in the ext/session dir for that purpose. ; NOTE 2: See the section on garbage collection below if you choose to ; use subdirectories for session storage ; ; The file storage module creates files using mode 600 by default. ; You can change that by using ; ; session.save_path = "N;MODE;/path" ; where MODE is the octal representation of the mode. Note that this ; does not overwrite the process's umask. session.save_path = "/tmp" ; Whether to use cookies. session.use_cookies = 1 ; This option enables administrators to make their users invulnerable to ; attacks which involve passing session ids in URLs;defaults to 0. ; session.use_only_cookies = 1 ; Name of the session (used as cookie name). session.name = PHPSESSID ; Initialize session on request startup. session.auto_start = 1 ; Lifetime in seconds of cookie or, if 0, until browser is restarted. session.cookie_lifetime = 0 ; The path for which the cookie is valid. session.cookie_path = / ; The domain for which the cookie is valid. session.cookie_domain = ; Handler used to serialize data. php is the standard serializer of PHP session.serialize_handler = php ; Define the probability that the 'garbage collection' process is started ; on every session initialization. ; The probability is calculated by using gc_probability/gc_divisor, ; e.g. 1/100 means there is a 1% chance that the GC process starts ; on each request. session.gc_probability = 1 session.gc_divisor = 1000 ; After this number of seconds, stored data will be seen as 'garbage' and ; cleaned up by the garbage collection process. session.gc_maxlifetime = 1440 ; PHP 4.2 and less have an undocumented feature/bug that allows you to ; to initialize a session variable in the global scope, albeit register_globals ; is disabled. PHP 4.3 and later will warn you, if this feature is used. ; You can disable the feature and the warning seperately. At this time, ; the warning is only displayed, if bug_compat_42 is enabled. session.bug_compat_42 = 0 session.bug_compat_warn = 1 ; Check HTTP Referer to invalidate externally stored URLs containing ids. ; HTTP_REFERER has to contain this substring for the session to be ; considered as valid. session.referer_check = 0 ; How many bytes to read from the file. ;session.entropy_length = 0 ; Specified here to create the session id. ;session.entropy_file = session.entropy_length = 16 session.entropy_file = /dev/urandom ; Set to {nocache,private,public,} to determine HTTP caching aspects. ; or leave this empty to avoid sending anti-caching headers. session.cache_limiter = nocache ; Document expires after n minutes. session.cache_expire = 180 ; trans sid support is disabled by default. ; Use of trans sid may risk your users security. ; Use this option with caution. ; - User may send URL contains active session ID ; to other person via. email/irc/etc. ; - URL that contains active session ID may be stored ; in publically accessible computer. ; - User may access your site with the same session ID ; always using URL stored in browser's history or bookmarks. session.use_trans_sid = 0 ; Select a hash function ; 0: MD5 (128 bits) ; 1: SHA-1 (160 bits) session.hash_function = 0 ; Define how many bits are stored in each character when converting ; the binary hash data to something readable. ; ; 4 bits: 0-9, a-f ; 5 bits: 0-9, a-v ; 6 bits: 0-9, a-z, A-Z, "-", "," session.hash_bits_per_character = 5 ; The URL rewriter will look for URLs in a defined set of HTML tags. ; form/fieldset are special; if you include them here, the rewriter will ; add a hidden <input> field with the info which is otherwise appended ; to URLs. If you want XHTML conformity, remove the form entry. ; Note that all valid entries require a "=", even if no value follows. url_rewriter.tags = "a=href,area=href,frame=src,input=src,form=fakeentry" PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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Here is the relevant info from phpinfo() Configure Command './configure' '--sysconfdir=/etc' '--localstatedir=/var' '--with-apxs=/usr/sbin/apxs' '--disable-debug' '--enable-pic' '--disable-cgi' '--disable-rpath' '--enable-inline-optimization' '--with-bz2' '--with-db3' '--with-png' '--with-gd' '--enable-gd-native-ttf' '--with-ttf' '--with-gdbm' '--with-gettext' '--with-ncurses' '--with-gmp' '--with-iconv' '--with-jpep' '--with-openssl' '--with-ftp' '--with-zlib' '--with-layout=GNU' '--enable-bcmath' '--enable-magic-quotes' '--enable-sockets' '--enable-sysvmem' '--enable-sysvshm' '--enable-discard-path' '--enable-track-vars' '--enable-trans-sid' '--enable-yp' '--enable-wddx' '--without-oci8' '--with-imap-ssl' '--with-mysql' '--with-xml' '--enable-bcmath' '--enable-shmop' '--enable-versioning' '--enable-calendar' '--enable-dbx' '--enable-mbstring' '--enable-mbstr-enc-trans' '--with-curl=/opt/jail/usr' '--with-gd' '--with-mcrypt' '--with-mhash' Server API Apache Virtual Directory Support disabled Configuration File (php.ini) Path /etc/php.ini PHP API 20020918 PHP Extension 20020429 Zend Extension 20021010 Debug Build no Thread Safety disabled apache APACHE_INCLUDE no value APACHE_TARGET no value Apache Version Apache/1.3.27 (Unix) (Red-Hat/Linux) mod_gzip/1.3.26.1a mod_ssl/2.8.12 OpenSSL/0.9.6b Apache Release 10327100 Apache API Version 19990320 Hostname:Port www.pricequotes.com:80 User/Group apache(48)/48 Max Requests Per Child: 10000 - Keep Alive: on - Max Per Connection: 200 Timeouts Connection: 300 - Keep-Alive: 60 Server Root /etc/httpd Loaded Modules mod_gzip, mod_ssl, mod_php4, mod_setenvif, mod_so, mod_headers, mod_expires, mod_auth_anon, mod_auth, mod_access, mod_rewrite, mod_alias, mod_actions, mod_asis, mod_cgi, mod_dir, mod_include, mod_info, mod_negotiation, mod_mime, mod_log_referer, mod_log_agent, mod_log_config, mod_env, mod_vhost_alias, http_core Directive Local Value Master Value child_terminate 0 0 engine 1 1 last_modified 0 0 xbithack 0 0 session Session Support enabled Registered save handlers files user Directive Local Value Master Value session.auto_start On On session.bug_compat_42 Off Off session.bug_compat_warn On On session.cache_expire 180 180 session.cache_limiter nocache nocache session.cookie_domain no value no value session.cookie_lifetime 0 0 session.cookie_path / / session.cookie_secure Off Off session.entropy_file /dev/urandom /dev/urandom session.entropy_length 16 16 session.gc_divisor 1000 1000 session.gc_maxlifetime 1440 1440 session.gc_probability 1 1 session.name PHPSESSID PHPSESSID session.referer_check 0 0 session.save_handler files files session.save_path /tmp /tmp session.serialize_handler php php session.use_cookies On On session.use_only_cookies Off Off session.use_trans_sid Off Off