Doc #61131 [Nab]: "HTTP-Posting-Client" etc are undocumented

Edit report at https://bugs.php.net/bug.php?id=61131&edit=1 ID: 61131 Updated by: rasmus@php.net Reported by: php at richardneill dot org Summary: "HTTP-Posting-Client" etc are undocumented Status: Not a bug Type: Documentation Problem Package: Documentation problem PHP Version: Irrelevant Block user comment: N Private report: N New Comment: And no way to turn it off. Not a very friendly patch. Previous Comments: ------------------------------------------------------------------------ [2012-02-18 05:42:46] php at richardneill dot org You're right - sorry for wasting your time - this is a patch in the most unlikely place. Mandriva (and thence Mageia) have patched the source, in file php-mail.diff; here are the relevant lines. + if (PG(http_globals)[TRACK_VARS_SERVER]) { + zval **remote_addr, **server_name, **server_port, + **script_name, **http_user_agent; + + if (zend_hash_find(PG(http_globals)[TRACK_VARS_SERVER]->value.ht, "REMOTE_ADDR", sizeof("REMOTE_ADDR"), (void **) &remote_addr)==SUCCESS) { + convert_to_string_ex(remote_addr); + fprintf(sendmail, "HTTP-Posting-Client: %s\n", Z_STRVAL_PP(remote_addr)); + } + if (zend_hash_find(PG(http_globals)[TRACK_VARS_SERVER]->value.ht, "SERVER_NAME", sizeof("SERVER_NAME"), (void **) &server_name)==SUCCESS) { + convert_to_string_ex(server_name); + fprintf(sendmail, "HTTP-Posting-URI: %s", Z_STRVAL_PP(server_name)); + if (zend_hash_find(PG(http_globals)[TRACK_VARS_SERVER]->value.ht, "SERVER_PORT", sizeof("SERVER_PORT"), (void **) &server_port)==SUCCESS) { + convert_to_string_ex(server_port); + fprintf(sendmail, ":%s", Z_STRVAL_PP(server_port)); + } + if (zend_hash_find(PG(http_globals)[TRACK_VARS_SERVER]->value.ht, "SCRIPT_NAME", sizeof("SCRIPT_NAME"), (void **) &script_name)==SUCCESS) { + convert_to_string_ex(script_name); + fprintf(sendmail, "%s", Z_STRVAL_PP(script_name)); + } + fprintf(sendmail, "\n"); + } + if (zend_hash_find(PG(http_globals)[TRACK_VARS_SERVER]->value.ht, "HTTP_USER_AGENT", sizeof("HTTP_USER_AGENT"), (void **) &http_user_agent)==SUCCESS) { + convert_to_string_ex(http_user_agent); + fprintf(sendmail, "HTTP-Posting-User-Agent: %s\n", Z_STRVAL_PP(http_user_agent)); + } + } [I'll add a pointer to this bug report into the mail() user-docs, so that other people can at least find this more easily.] ------------------------------------------------------------------------ [2012-02-18 05:10:01] php at richardneill dot org > They aren't documented because we don't add them. > Your PHP is either patched locally to do this, something else is adding it, > or you have userspace code doing it. Thanks for your explanation - this makes sense from PHP's perspective, but it's now really weird. Googling for these headers shows they are very widespread. I know there is no userspace code of mine doing this, and I don't think sendmail could be doing it (the MTA can't have knowledge of the HTTP user-agent). I'm using the stock PHP build provided by Mageia. ------------------------------------------------------------------------ [2012-02-18 04:45:07] rasmus@php.net They aren't documented because we don't add them. Your PHP is either patched locally to do this, something else is adding it, or you have userspace code doing it. The only header PHP optionally adds (disabled by default) is X-PHP-Originating- Script which is documented here: http://www.php.net/manual/en/mail.configuration.php ------------------------------------------------------------------------ [2012-02-18 04:27:03] php at richardneill dot org Description: ------------ I've just been looking at the headers of some email sent out by my own system (using PHP's mail() function). I note that the email contains headers including the following: HTTP-Posting-Client: USERS_IP_ADDRESS HTTP-Posting-URI: MY_WEBSITE:80/PATH/TO/FILE.php HTTP-Posting-User-Agent: Mozilla/5.0 (compatible; Konqueror/4.6; Linux) KHTML/4.6.5 (like Gecko) Mageia/4.6.5-1.3.mga1 I can't locate any documentation of where these headers get added, or how to configure them (despite already searching the entire PHP documentation, and grepping the php.ini files) I'm filing this first as a documentation "bug", though I really consider it as a significant security hole / information leak which could compromise the privacy of the sender. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=61131&edit=1