(一)onvif- remotediscovery测试

来源：互联网发布：安卓解压软件编辑：程序博客网时间：2024/06/15 02:03

刚开始研究，参考了网上的代码，但是出现了错误！还有很多问题慢慢理解吧！记录今天的发现。

gsoap版本：2.8.32最新版本

下载onvif的wsdl文件生成c文件。

感谢此博客的博主，http://gaohtao.blog.163.com/blog/#m=0&t=3&c=onvif

从头说起：

1、下载gsoap,解压后进入目录：

./configure <> make
gsoap\src 以及\gsoap\wsdl下可见生成onvif架构的可执行文件！——soapcpp2和wsdl2h可执行文件

2、利用上面两个可执行文件生成onvif代码如下：

首先可以下载onvif的wsdl文件，下载方法：
http://www.onvif.org/onvif/ver20/util/operationIndex.html
比如下载devicemgmt.wsdl，对准DeviceMgmt下的比如GetDeviceInformation链接右键链接另存为即可出现！保存就好了，其他的下载方法一样！
DeviceMgmt

GetDeviceInformation 。。。

拷贝soapcpp2和wsdl2h到bin的linui386目录下(自己建立，可以自己建立，具体位置也无所谓)，如果该目录有此文件就不必拷贝了，如果运行不了在拷贝！
使用wsdl2h生成对应h文件。注意拷贝wsdl目录下的typemap.dat以及下载回来的remotediscovery.wsdl到的bin/linuxi386目录下，只用remotediscovey.wsdl。后面在研究其他的把

./wsdl2h -o remotediscovery.h -c -s -t typemap.dat remotediscovery.wsdl

生成C文件

./soapcpp2 remotediscovery.h -x -I ../../import

3、从网上download代码下来，具体代码不列出来了，编译后执行

sudo ./onvifserver

在ONVIF Device Test tool 按device discovery 按钮没有发现，输入IP后，按probe后弹出如下错误框

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| Unexpected error occurred:XML文档（2，833）中有错误。 |
| |
—————————————————————————————
重新编译gsoap后又出现如下bug
—————————————————————————————
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| Unexpected error occurred:XML文档（2，909）中有错误。 |
| |
—————————————————————————————

解决方法：查找到sendto函数看看onvif回复的信息，使用GDB调试；
GDB小技巧：
通常在gdb调试时要打印出一些字符串的内容，通过
p str@str_len 打印字符串时，通常有长度的限制，我测试linux机器上默认为200个，但实际输出的长度str_len可能大于该值。
结果不能够完全输出，而进行了省略，通过命令set print element 0就可以了。

使用wireshark解析，过滤方法：(ip.addr eq 10.104.15.230 and ip.addr eq 10.104.15.50) and (udp.port eq 3702 and udp.port eq 3702)

分析ONVIF Device Test tool发送的数据以及discoveryserver回复的数据对比！

ONVIF Device Test tool发送的数据，发两次数据如下：

<?xml version="1.0" encoding="utf-8"?><Envelope xmlns:tds="http://www.onvif.org/ver10/device/wsdl" xmlns="http://www.w3.org/2003/05/soap-envelope"><Header><wsa:MessageID xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">uuid:ac68cf08-25da-465c-97f1-ac6da5efc4d9</wsa:MessageID><wsa:To xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To><wsa:Action xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</wsa:Action></Header><Body><Probe xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:xsd="http://www.w3.org/2001/XMLSchema"xmlns="http://schemas.xmlsoap.org/ws/2005/04/discovery"><Types>tds:Device</Types><Scopes><Scopes /></Probe></Body></Envelope>

<?xml version="1.0" encoding="utf-8"?><Envelope xmlns:dn="http://www.onvif.org/ver10/network/wsdl" xmlns="http://www.w3.org/2003/05/soap-envelope"><Header><wsa:MessageID xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">uuid:b02cab32-f5bc-4bfa-b968-0f4b0a228208</wsa:MessageID><wsa:To xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To><wsa:Action xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing">http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</wsa:Action></Header><Body><Probe xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.xmlsoap.org/ws/2005/04/discovery"><Types>dn:NetworkVideoTransmitter</Types><Scopes /></Probe></Body></Envelope>

onvifserver回复的数据如下：

<?xml version="1.0" encoding="UTF-8"?><SOAP-ENV:Envelope xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope" xmlns:SOAP-ENC="http://www.w3.org/2003/05/soap-encoding" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:wsdd="http://schemas.xmlsoap.org/ws/2005/04/discovery" xmlns:tdn="http://www.onvif.org/ver10/network/wsdl"><SOAP-ENV:Header><wsa:MessageID>uuid:2419d68a-2dd2-21b2-a205-010101010101</wsa:MessageID><wsa:RelatesTo>uuid:3a7c78e4-bacb-4ec8-a4ee-225e5e575a41</wsa:RelatesTo><wsa:To SOAP-ENV:mustUnderstand="true">http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:To><wsa:Action SOAP-ENV:mustUnderstand="true">http://schemas.xmlsoap.org/ws/2005/04/discovery/ProbeMatches</wsa:Action></SOAP-ENV:Header><SOAP-ENV:Body><wsdd:ProbeMatches><SOAP-RPC:result xmlns:SOAP-RPC="http://www.w3.org/2003/05/soap-rpc">-sizeProbeMatch</SOAP-RPC:result><wsdd:ProbeMatch xmlns:_0="http://www.onvif.org/ver10/device/wsdl"><wsa:EndpointReference><wsa:Address>urn:uuid:2419d68a-2dd2-21b2-a205-010101010101</wsa:Address><wsa:ReferenceProperties></wsa:ReferenceProperties><wsa:ReferenceParameters></wsa:ReferenceParameters><wsa:PortType>ttl</wsa:PortType></wsa:EndpointReference><wsdd:Types>_0:Device</wsdd:Types><wsdd:Scopes>onvif://www.onvif.org/type/NetworkVideoTransmitter</wsdd:Scopes><wsdd:XAddrs>http://010.104.15.230/onvif/device_service</wsdd:XAddrs><wsdd:MetadataVersion>1</wsdd:MetadataVersion></wsdd:ProbeMatch></wsdd:ProbeMatches></SOAP-ENV:Body></SOAP-ENV:Envelope

ONVIF Device Test tool提示的错误：
Unexpected error occurred:XML文档（2，909）中有错误
是discoveryserver回复的XML文件有错误，偏移位置909，定位至909，为：

<SOAP-RPC:result xmlns:SOAP-RPC="http://www.w3.org/2003/05/soap-rpc">-sizeProbeMatch</SOAP-RPC:result>

这句有错误。查看代码定位置-sizeProbeMatch字符串，调试具体代码如下：

SOAP_FMAC3 int SOAP_FMAC4 soap_out_wsdd__ProbeMatchesType(struct soap *soap, const char *tag, int id, const struct wsdd__ProbeMatchesType *a, const char *type){(void)soap; (void)tag; (void)id; (void)a; (void)type; /* appease -Wall -Werror */if (soap_element_begin_out(soap, tag, soap_embedded_id(soap, id, a, SOAP_TYPE_wsdd__ProbeMatchesType), type))return soap->error;printf("function:%s,line:%d \n",__FUNCTION__,__LINE__);soap_element_result(soap, "-sizeProbeMatch");//if (a->ProbeMatch){int i;for (i = 0; i < (int)a->__sizeProbeMatch; i++)if (soap_out_wsdd__ProbeMatchType(soap, "wsdd:ProbeMatch", -1, a->ProbeMatch + i, ""))return soap->error;}return soap_element_end_out(soap, tag);}

定位函数soap_element_result(soap, "-sizeProbeMatch");
屏蔽次函数即可，就不会发送<SOAP-RPC:result xmlns:SOAP-RPC="http://www.w3.org/2003/05/soap-rpc">-sizeProbeMatch</SOAP-RPC:result>这个了，一切正常！

点击Onvif Device test tool的Discover Devices无法枚举，原因如下：
分析：使用wireshark由于Discover Devices点击会发送的是组播信息，使用GDB调试程序发现一直停在了recvfrom函数，对组播信息完全忽略。跟踪发现soap_bind如下代码：

if (soap_valid_socket(soap->master)){     soap->fclosesocket(soap, soap->master);    soap->master = SOAP_INVALID_SOCKET;}

soap->fclosesocket(soap, soap->master);
//linux下调用close，也就是会把之前申请的关闭了，所以之前对socket加入组播信息也会没有，如果要重新识别组播信息，就必须重新加入组播，
//所以在bind后面必要重新加入组播代码如下：

   struct ip_mreq mreq;   mreq.imr_multiaddr.s_addr = inet_addr("239.255.255.250");   mreq.imr_interface.s_addr = htonl(INADDR_ANY);   if(setsockopt(server_udp,IPPROTO_IP,IP_ADD_MEMBERSHIP,&mreq,sizeof(mreq))==-1){   _DBG_ERROR("memberchip error\n");   }

原主函数：

int main{int server_udp;int retval=0;struct soap *soap_udp;int fault_flag = 0;server_udp = create_server_socket_udp();bind_server_udp1(server_udp);while(1){soap_udp=soap_new();//soap_init(soap_udp);soap_init1(soap_udp, SOAP_IO_UDP);soap_udp->master = server_udp;soap_udp->socket = server_udp;printf("skfd:%d \n",server_udp);soap_udp->errmode = 0;soap_udp->bind_flags = 1;if (!soap_valid_socket(soap_bind(soap_udp, NULL, UDP_PORT, 100))){ soap_print_fault(soap_udp, stderr);}printf("%d \n",soap_udp->master);PRINT_MSG("soap_serve starting..\n");retval = soap_serve(soap_udp); if(retval && !(fault_flag)){fault_flag = 1;}else if(!retval){fault_flag = 0;}soap_destroy(soap_udp);soap_end(soap_udp);soap_done(soap_udp);free(soap_udp);}}

新的主函数：

int main{int server_udp;int retval=0;struct soap *soap_udp;int fault_flag = 0;server_udp = create_server_socket_udp();bind_server_udp1(server_udp);while(1){soap_udp=soap_new();soap_init1(soap_udp, SOAP_IO_UDP);soap_udp->master = server_udp;soap_udp->socket = server_udp;soap_udp->errmode = 0;soap_udp->bind_flags = 1;if (!soap_valid_socket(soap_bind(soap_udp, NULL, UDP_PORT, 100))){ soap_print_fault(soap_udp, stderr);}//重新加入组播#define 1struct ip_mreq mreq;mreq.imr_multiaddr.s_addr = inet_addr("239.255.255.250");mreq.imr_interface.s_addr = htonl(INADDR_ANY);if(setsockopt(server_udp,IPPROTO_IP,IP_ADD_MEMBERSHIP,&mreq,sizeof(mreq))==-1){   _DBG_ERROR("memberchip error\n");}#endifPRINT_MSG("soap_serve starting..\n");retval = soap_serve(soap_udp); if(retval && !(fault_flag)){fault_flag = 1;}else if(!retval){fault_flag = 0;}soap_destroy(soap_udp);soap_end(soap_udp);soap_done(soap_udp);free(soap_udp);}}

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