ID: 31447
User updated by: phpbug at ebt dot cjb dot net
Reported By: phpbug at ebt dot cjb dot net
Status: Open
Bug Type: DOM XML related
Operating System: Red Hat Linux 7.3
PHP Version: 4.3.10
New Comment:
Forgot: I believe the expected result should mention an error with the
entity, not simply return without an error. However, gracefully
displaying an error is better than a segfault.
Previous Comments:
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[2005-01-07 23:21:51] phpbug at ebt dot cjb dot net
Description:
------------
When the domxml_open_file function is called on a file that contains
invalid entity (like &asdf;), PHP segfaults. Replacing the invalid
entity with a valid one (like &) does not cause a segfault.
I'm using the DOMXML extension included with the PHP source
(./configure --with-dom)
Reproduce code:
---------------
test.xml:
<?xml version="1.0" ?>
<roottag>
<test testvalue="tom, dick &asdf; harry" />
</roottag>
test.php:
<?php
$dom = domxml_open_file("test.xml");
?>
Expected result:
----------------
Run the test.php file; PHP should return without an error:
# php test.php
#
Actual result:
--------------
# php test.php
Segmentation fault
#
According to gdb:
# gdb php
(gdb) run test.php
Starting program: /usr/local/bin/php test.php
Program received signal SIGSEGV, Segmentation fault.
0x08208fe5 in add_next_index_zval (arg=0x3, value=0x840526c) at
/root/installs/php-4.3.10/Zend/zend_API.c:851
851 return zend_hash_next_index_insert(Z_ARRVAL_P(arg),
&value, sizeof(zval *), NULL);
(gdb) bt
#0 0x08208fe5 in add_next_index_zval (arg=0x3, value=0x840526c) at
/root/installs/php-4.3.10/Zend/zend_API.c:851
#1 0x080906c4 in domxml_error_ext (ctx=0x83f6fd0, msg=0x405f6fdb "%s")
at /root/installs/php-4.3.10/ext/domxml/php_domxml.c:1460
#2 0x40546d9d in __xmlRaiseError (schannel=0, channel=0x809047c
<domxml_error_ext>, data=0x83f6fd0, ctx=0x83f6fd0, nod=0x0,
domain=1, code=26, level=XML_ERR_FATAL, file=0x83ee6a8 "test.xml",
line=3, str1=0x8404c92 "asdf", str2=0x0, str3=0x0, int1=0,
int2=0, msg=0x405e9bee "Entity '%s' not defined\n") at error.c:610
#3 0x4054a3fb in xmlFatalErrMsgStr (ctxt=0x83f6fd0,
error=XML_ERR_UNDECLARED_ENTITY, msg=0x405e9bee "Entity '%s' not
defined\n",
val=0x8404c92 "asdf") at parser.c:523
#4 0x40553b4e in xmlParseEntityRef__internal_alias (ctxt=0x83f6fd0) at
parser.c:5873
#5 0x4054de47 in xmlParseAttValueComplex (ctxt=0x83f6fd0,
attlen=0xbfffbe60, normalize=0) at parser.c:2859
#6 0x405557ac in xmlParseAttribute2 (ctxt=0x83f6fd0, pref=0x0,
elem=0x8404c83 "test", prefix=0xbfffbe58, value=0xbfffbe5c,
len=0xbfffbe60, alloc=0xbfffbe64) at parser.c:7259
#7 0x40555ac5 in xmlParseStartTag2 (ctxt=0x83f6fd0, pref=0xbfffbea4,
URI=0xbfffbea8, tlen=0xbfffbeac) at parser.c:7388
#8 0x40556e51 in xmlParseElement__internal_alias (ctxt=0x83f6fd0) at
parser.c:7981
#9 0x40556cf2 in xmlParseContent__internal_alias (ctxt=0x83f6fd0) at
parser.c:7905
#10 0x40557091 in xmlParseElement__internal_alias (ctxt=0x83f6fd0) at
parser.c:8065
#11 0x405582cb in xmlParseDocument__internal_alias (ctxt=0x83f6fd0) at
parser.c:8666
#12 0x080996f9 in domxml_document_parser (mode=0, loadtype=1,
source=0x83f2524 "test.xml", data=0x0)
at /root/installs/php-4.3.10/ext/domxml/php_domxml.c:4003
#13 0x08099a73 in zif_xmldocfile (ht=1, return_value=0x83ee644,
this_ptr=0x0, return_value_used=1)
at /root/installs/php-4.3.10/ext/domxml/php_domxml.c:4073
#14 0x0821b2ab in execute (op_array=0x83f2cbc) at
/root/installs/php-4.3.10/Zend/zend_execute.c:1642
#15 0x08206b20 in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /root/installs/php-4.3.10/Zend/zend.c:900
#16 0x081cc682 in php_execute_script (primary_file=0xbfffe560) at
/root/installs/php-4.3.10/main/main.c:1736
#17 0x08221c5a in main (argc=2, argv=0xbfffe604) at
/root/installs/php-4.3.10/sapi/cli/php_cli.c:822
#18 0x406425d9 in __libc_start_main () from /lib/libc.so.6
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Edit this bug report at http://bugs.php.net/?id=31447&edit=1
