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[2002-09-21 07:54 UTC] misiek at pld dot org dot pl
The problem is that when any user sends email message from php script it always comes from ,,http'' (or whatever) user. There is no way to identify which script was used to send some mail. User sets all headers as he wants ;/ Sender is http@fqdn. On my systems users have a lot of php scripts and spammers use them to spam through my server! Identifying which script was used is quite problematic when there are tons of scripts. php currently doesn't give any information about which script was that - there is no usefull enviroment variables, there is no additional mail headers, working directory when calling sendmail is ,,/'' so I can't even do pwd to identify directory with php script. I'm suggesting adding way to identify source script. I thing about two ways of doing this: 1) set enviroment variable SCRIPT_FILENAME with same value as in php (and other variables) before executing sendmail so It would be possible to setup wrapper instead of sendmail and do whatever you want. 2) add option to php.ini like sendmail_id_header = yes|no that would cause adding some header to message like X-PHP-Script-Filename: /home/something/blah.php or even sendmail_id_header = name of php variable (that would cause to add X-Name-Of-PHP-Variable: it's value to mail message). Second is better because it works with SMTP, too. Opinions? PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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Last updated: Thu Nov 21 17:01:32 2024 UTC |
I've been thinking... and I don't think it's any useful to add those things. This is because it can be very easily compromised by just using popen("sendmail") or similar.This is easily solved: mail("user@host.com","Subject Line","Body","X-PHP-Mailer-Script: {$_SERVER[HTTP_HOST]}{$_SERVER[REQUEST_URI]}\nX-PHP-Mailer-Path: {$_SERVER[SCRIPT_FILENAME]}\nX-PHP-Remote-IP: {$_SERVER[REMOTE_ADDR]"); This will add three new headers to this mail: X-PHP-Mailer-Script: yourwebhost.com/path/to/script.php X-PHP-Mailer-Path: /real/path/to/script.php X-PHP-Remote-IP: 10.20.30.40 And now you'll know which script the spammer is using.I can't modify my customers scripts. Scripts are changing frequently, new customers upload new scripts and so on. Anyway: [root@gucio customers]# grep -ri 'mail(' . | wc -l 2873 Changing 2873 not mine script means ,,introduce some bugs'', too. Basically I want feature that does similar thing to yours but configurable globally from php.ini.Ah, I see. So you want to be able to have a php.ini directive like this: add_mail_headers = "X-PHP-Script: {$_SERVER[HTTP_HOST]}{$_SERVER[REQUEST_URI]}\nX-Contact-If-Spammed: Contact Information\n"; So that every mail() call will add that line. I think that is a valid request, especially since a badly formed script can really mess things up. It would default to "", and if it was not properly written it would be ignored. By making it configurable, admins can choose to add or remove global mail headers. I think this would be very useful for installs which serve lots of customers.Ok, here is simplest verion of what I requested - unfortunately it's not configureable. I hope that code is ok (is it in terms of php codding?) diff -urN php-4.2.3.org/ext/standard/mail.c php-4.2.3/ext/standard/mail.c --- php-4.2.3.org/ext/standard/mail.c Tue Oct 29 21:35:04 2002 +++ php-4.2.3/ext/standard/mail.c Tue Oct 29 21:33:03 2002 @@ -21,6 +21,8 @@ #include <stdlib.h> #include <ctype.h> #include <stdio.h> +#include <syslog.h> +#include <string.h> #include "php.h" #include "ext/standard/info.h" #if !defined(PHP_WIN32) @@ -37,6 +39,10 @@ #include "safe_mode.h" #include "exec.h" +#include "zend_operators.h" + +#include "zend_globals.h" + #if HAVE_SENDMAIL #ifdef PHP_WIN32 #include "win32/sendmail.h" @@ -166,8 +172,42 @@ efree (sendmail_cmd); if (sendmail) { - fprintf(sendmail, "To: %s\n", to); - fprintf(sendmail, "Subject: %s\n", subject); + if ((to != NULL) && (strlen(to)!=0)) { + fprintf(sendmail, "To: %s\n", to); + } + if ((subject != NULL) && (strlen(subject)!=0)) { + fprintf(sendmail, "Subject: %s\n", subject); + } + + TSRMLS_FETCH(); + + if (PG(http_globals)[TRACK_VARS_SERVER]) { + zval **remote_addr, **server_name, **server_port, + **request_uri, **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, "REQUEST_URI", sizeof("REQUEST_URI"), (void **) &request_uri)==SUCCESS) { + convert_to_string_ex(request_uri); + fprintf(sendmail, "%s", Z_STRVAL_PP(request_uri)); + } + 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)); + } + } + if (headers != NULL) { fprintf(sendmail, "%s\n", headers); } [misiek@arm ~]$