Segfault实例化类中的自定义PHP扩展C

我正在开发自己的PHP扩展，其中有一个类。我最近从Ubuntu 9.04升级到9.10，扩展功能破裂了。我自从尝试更新到10.04，看看它是否修复它，因为我的开发环境是10.04，它在那里工作正常。从我能理解的唯一的主要区别是服务器是64位和我的笔记本电脑32位体系结构。我有PHP版本5.3.2-1ubuntu4.5（Zend build 20090626）。Segfault实例化类中的自定义PHP扩展C

我试图运行我的测试PHP文件：

 
<?php 
$server = "http://localhost/"; 
$port = 1214; 
$f = new PPKeyClient($server, $port); 
var_dump($f);

在GDB：

 
[email protected]:/etc/php5/conf.d# gdb php 
GNU gdb (GDB) 7.1-ubuntu 
Copyright (C) 2010 Free Software Foundation, Inc. 
License GPLv3+: GNU GPL version 3 or later 
This is free software: you are free to change and redistribute it. 
There is NO WARRANTY, to the extent permitted by law. Type "show copying" 
and "show warranty" for details. 
This GDB was configured as "x86_64-linux-gnu". 
For bug reporting instructions, please see: 
... 
Reading symbols from /usr/bin/php...Reading symbols from /usr/lib/debug/usr/bin/php5...done. 
done. 
(gdb) run -f /var/www/test.php 
Starting program: /usr/bin/php -f /var/www/test.php 
[Thread debugging using libthread_db enabled] 
[New Thread 0x7fffef15b710 (LWP 9228)] 
[Thread 0x7fffef15b710 (LWP 9228) exited] 
1 
Program received signal SIGSEGV, Segmentation fault. 
0x00000000006e7767 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fff00000000) 
    at /build/buildd/php5-5.3.2/Zend/zend_vm_execute.h:371 
371 /build/buildd/php5-5.3.2/Zend/zend_vm_execute.h: No such file or directory. 
in /build/buildd/php5-5.3.2/Zend/zend_vm_execute.h 
(gdb) bt 
#0 0x00000000006e7767 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fff00000000) 
    at /build/buildd/php5-5.3.2/Zend/zend_vm_execute.h:371 
#1 0x00000000006bec20 in execute (op_array=0xfef1b0) at /build/buildd/php5-5.3.2/Zend/zend_vm_execute.h:104 
#2 0x000000000069694d in zend_execute_scripts (type=0, retval=0x7fffffffbf90, file_count=3) 
    at /build/buildd/php5-5.3.2/Zend/zend.c:1266 
#3 0x0000000000642598 in php_execute_script (primary_file=0x2) at /build/buildd/php5-5.3.2/main/main.c:2288 
#4 0x0000000000727a56 in main (argc=0, argv=0x1) at /build/buildd/php5-5.3.2/sapi/cli/php_cli.c:1196 
(gdb)

而且从扩展相关位：

 
PHP_MINIT_FUNCTION(pp) 
{ 
     // Register PPKeyClient class 
     zend_class_entry ce; 
     INIT_CLASS_ENTRY(ce, "PPKeyClient", pp_functions); 
     PPKeyClient_ce = zend_register_internal_class(&ce TSRMLS_CC); 
     PPKeyClient_ce->create_object = PPKeyClient_object_new; 
     memcpy(&PPKeyClient_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); 
     PPKeyClient_handlers.clone_obj = NULL; 
     return SUCCESS; 
} 

zend_object_value PPKeyClient_object_new(zend_class_entry *ce TSRMLS_DC) 
{ 
     zend_object_value retval; 
     PPKeyClient_object *intern; 

     // TODO - only instantiate look at 
     // http://stackoverflow.com/questions/1906565/php-extension-library-accessing-php-superglobals 
     // or google for http://www.google.co.uk/search?hl=en&safe=off&q=superglobals+in+php+extensions&aq=f&aqi=&aql=&oq=&gs_rfai= 

     intern = ecalloc(1, sizeof(PPKeyClient_object)); 
     zend_object_std_init(&(intern->std), ce TSRMLS_CC); 
     zend_hash_copy(intern->std.properties, &ce->default_properties, (copy_ctor_func_t) zval_add_ref, NULL, sizeof(zval *)); 

     intern->last_curl_result = PPKC_NO_REQUEST; 

     retval.handle = zend_objects_store_put(intern, PPKeyClient_object_dtor, NULL, NULL TSRMLS_CC); 
     retval.handlers = &PPKeyClient_handlers; 
     return retval; 
} 

PHP_METHOD(PPKeyClient, __construct) 
{ 
     PPKeyClient_object *intern; 
     char *url, *ssl_ca_crt = NULL; 
     int port = 80, url_len, ssl_ca_crt_len = 0, ua_len = 0; 

     if(zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|ls", &url, &url_len, &port, &ssl_ca_crt, &ssl_ca_crt_len) == SUCCES$ 
     { 
       intern = (PPKeyClient_object*)zend_object_store_get_object(getThis() TSRMLS_CC); 
//    intern->port = port; 

//    intern->baseurl = estrndup(url, url_len); 
//    intern->baseurl_len = url_len; 
//    intern->ssl_ca_crt = estrndup(ssl_ca_crt, ssl_ca_crt_len); 
//    intern->ssl_ca_crt_len = ssl_ca_crt_len; 
//    intern->useragent = "PP KeyClient (PPExt#" PHP_PRIVATE_PASSWORDS_EXTNAME " v" PHP_PRIVATE_PASSWORDS_VERSION ")"; 
     } 
}

我知道，在注释中intern = (PPKeyClient_object*)zend_object_store_get_object...行使它的工作，但显然我不能设置从构造函数的值没有临时工吨。

我很失落，并会感谢任何帮助发现什么！

来源

2010-10-12 Asgrim

指针在32位系统上长4个字节，在64位系统上长8个。 – SlappyTheFish 2011-02-16 11:02:52

我完全记不清我是如何解决这个问题的 - 我认为@SlappyTheFish是正确的 - 与64 bitness有关。我后来重新安装服务器为32位，我相信修复它，所以基本上这个问题没有解决，但我解决了它。

来源

2011-05-26 08:40:44 Asgrim

只见带来了libsafe安装了一些Ubuntu的版本中，如果是这样与Ubuntu 9.04的情况下，也许错误一直存在......

这是因为libsafe的可以“避免”一些缓冲区溢出，双自由一些其他的错误。

我不熟悉PHP扩展...... getThis（）是PHP API的一个函数还是你的？如果这是你的，你可以发送它？

来源

2011-02-17 02:32:30 Fernando

哦，这是旧的... – Fernando 2011-02-17 02:33:29

Segfault实例化类中的自定义PHP扩展C

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