Edit report at https://bugs.php.net/bug.php?id=55336&edit=1
ID: 55336
User updated by: grabli_2005 at mail dot ru
Reported by: grabli_2005 at mail dot ru
Summary: mail() function is not thread safe for Windows
builds
-Status: Feedback
+Status: Assigned
Type: Bug
Package: Network related
Operating System: Windows
PHP Version: 5.4.0alpha2
Assigned To: pajoye
Block user comment: N
Private report: N
New Comment:
Link you provide is for crash-point backtrace. Read cearfully - it`s not
crashed, it`s not thread safe.
Problem function - win32\sendmail.c->TSendMail (with subfunctions) which uses
global variables without any locking.
Also I can`t change status back to "Open", only avalable options for now is
assigned and closed.
Previous Comments:
------------------------------------------------------------------------
[2011-08-28 21:29:51] paj...@php.net
Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php for *NIX and
http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32
Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.
Would rock if you can provide one.
------------------------------------------------------------------------
[2011-08-28 20:16:31] grabli_2005 at mail dot ru
Yep, I`ve got buffer corruption and socket leak under threading.
There no need of TSRM code, socket handle and buffer can be allocated on stack,
it`s not so big (4kb).
------------------------------------------------------------------------
[2011-08-22 14:51:22] ka...@php.net
Have you encountered any issues specific to this finding? I suppose we could
make a new globals, like PW32G for SendMail and stash the variables in there.
------------------------------------------------------------------------
[2011-08-03 18:20:59] grabli_2005 at mail dot ru
switch status to open, see details in previous comment
------------------------------------------------------------------------
[2011-08-01 13:40:27] grabli_2005 at mail dot ru
I`ve provide this patches as reference only, not as product quality code
replacement.
The only difference that I note since 5.3.0 is FormatEmailAddress function,
that omits <> around emails.
You can check my statment:
look at /ext/standard/mail.c function php_mail
Here nix path: sendmail = popen(sendmail_cmd, "w");
Here win32 path: if (TSendMail(INI_STR("SMTP"), &tsm_err, &tsm_errmsg, hdr,
subject, to, message, NULL, NULL, NULL TSRMLS_CC) == FAILURE) {
TSendMail located in win32\sendmail.c
here global variables:
#ifndef THREAD_SAFE
char Buffer[MAIL_BUFFER_SIZE];
/* socket related data */
SOCKET sc;
#ifndef NETWARE
WSADATA Data;
struct hostent *adr;
int WinsockStarted;
/* values set by the constructor */
char *AppName;
#endif /* NETWARE */
SOCKADDR_IN sock_in;
char MailHost[HOST_NAME_LEN];
char LocalHost[HOST_NAME_LEN];
#endif
It`s placed under #ifndef THREAD_SAFE, but THREAD_SAFE not defined anywhere
even when compile with ZTS. More often _THREAD_SAFE used around the code.
If you define THREAD_SAFE it`s break sendmail.c compilation, because rest of
code uses this variables without any define switch.
You can simply debug or place debug printf() in TSendMail and see that this
code executed and uses global variables.
win32\time.c have same issue.
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
https://bugs.php.net/bug.php?id=55336
--
Edit this bug report at https://bugs.php.net/bug.php?id=55336&edit=1
