Linux下onvif客户端获取ipc摄像头 获取能力：GetCapabilities

getcapabilities:获取能力,主要目的获取设备能力信息（获取媒体服务地址）

鉴权：但是在调用获取设备能力之前是需要鉴权的。onvif协议规定，部分接口需要鉴权，部分接口不需要鉴权，在调用需要鉴权的接口时不使用鉴权，会导致接口调用失败。实现鉴权的方式之一可以调用gsoap源码中的 soap_wsse_add_usernametokendigest()函数。要安装依赖库openssl

实现代码：

  1 #include <stdio.h>
  2 #include <stdlib.h>
  3 #include <string.h>
  4 #include <assert.h>
  5  
  6 #include "soaph.h"
  7 #include "stdsoap2.h"
  8 #include "soapstub.h"
  9 #include "wsseapi.h"
 10  
 11 #include "wsdd.nsmap" //命名空间
 12  
 13 static struct soap* onvif_initsoap(struct soap_env__header *header, const char *was_to, const char *was_action, int timeout)
 14 {
 15     struct soap *soap = null;    // soap环境变量
 16     unsigned char macaddr[6];
 17     char _hwid[1024];
 18     unsigned int flagrand;
 19  
 20     soap = soap_new();
 21     if(soap == null)
 22     {
 23         printf("[%d]soap = null\n", __line__);
 24         return null;
 25     }
 26  
 27     soap_set_namespaces(soap, namespaces);   // 设置soap的namespaces，即设置命名空间
 28  
 29     // 设置超时（超过指定时间没有数据就退出）
 30     if(timeout > 0)
 31     {
 32         soap->recv_timeout = timeout;
 33         soap->send_timeout = timeout;
 34         soap->connect_timeout = timeout;
 35     }
 36     else
 37     {
 38         //maximum waittime : 20s
 39         soap->recv_timeout  = 20;
 40         soap->send_timeout  = 20;
 41         soap->connect_timeout = 20;
 42     }
 43  
 44     soap_default_soap_env__header(soap, header);
 45  
 46     //create sessionid randomly,生成uuid(windows下叫guid，linux下叫uuid)，格式为urn:uuid:8-4-4-4-12，由系统随机产生
 47     srand((int)time(0));
 48     flagrand = rand()%9000 + 8888;
 49     macaddr[0] = 0x1;
 50     macaddr[1] = 0x2;
 51     macaddr[2] = 0x3;
 52     macaddr[3] = 0x4;
 53     macaddr[4] = 0x5;
 54     macaddr[5] = 0x6;
 55     sprintf(_hwid, "urn:uuid:%ud68a-1dd2-11b2-a105-%02x%02x%02x%02x%02x%02x", flagrand, macaddr[0], macaddr[1], macaddr[2],macaddr[3],macaddr[4],macaddr[5]);
 56     header->wsa__messageid = (char *)malloc(100);  
 57     memset(header->wsa__messageid, 0, 100);
 58     strncpy(header->wsa__messageid, _hwid, strlen(_hwid));    //wsa__messageid存放的是uuid
 59  
 60     if(was_action != null)
 61     {
 62         header->wsa__action = (char*)malloc(1024);
 63         memset(header->wsa__action, '\0', 1024);
 64         strncpy(header->wsa__action, was_action, 1024); //
 65     }
 66     if(was_to != null)
 67     {
 68         header->wsa__to = (char *)malloc(1024);
 69         memset(header->wsa__to, '\0', 1024);
 70         strncpy(header->wsa__to, was_to, 1024);//"urn:schemas-xmlsoap-org:ws:2005:04:discovery";
 71     }
 72     soap->header = header;
 73     return soap;
 74 }
 75  
 76  
 77 //释放函数
 78 void onvif_soap_delete(struct soap *soap)
 79 {
 80     soap_destroy(soap);                      // remove deserialized class instances (c++ only)
 81     soap_end(soap);                          // clean up deserialized data (except class instances) and temporary data
 82     soap_free(soap);                         // reset and deallocate the context created with soap_new or soap_copy
 83 }
 84  
 85  
 86 //鉴权
 87 static int onvif_setauthinfo(struct soap *soap, const char *username, const char *password)
 88 {
 89     int result = 0;
 90     if((null != username) || (null != password)){
 91         soap_wsse_add_usernametokendigest(soap, null, username, password);
 92     }else{
 93         printf("un etauth\n");
 94         result = -1;
 95     }
 96  
 97     return result;
 98 }
 99  
100  
101  
102 int main(int argc,char *argv[])
103 {
104     int ret = 0;
105     char sercer_addr[] = "http://172.168.0.211/onvif/device_service"; //设备搜索得到的地址
106  
107     struct soap_env__header header;
108     struct soap* soap = onvif_initsoap(&header, null, null, 5);
109  
110     struct _tds__getcapabilities *req;
111     struct _tds__getcapabilitiesresponse *response;
112     
113     if(null == (req = (struct _tds__getcapabilities *)calloc(1,sizeof(struct _tds__getcapabilities))))
114     {
115         printf("calloc is error \n");
116         ret = -1;
117         return ret;
118     }else{
119         req->__sizecategory = 1;
120         req->category = (enum tt__capabilitycategory *)soap_malloc(soap, sizeof(int));
121         *(req->category) = (enum tt__capabilitycategory)5; //5表示：tt__capabilitycategory__media
122  
123         onvif_setauthinfo(soap,"admin","hk123456");  //鉴权，输入摄像头的用户名、密码
124         ret = soap_call___tds__getcapabilities(soap, sercer_addr, null,req, response);
125         if(soap->error){ 
126             ret = -1;
127             printf("soap error: %d, %s, %s\n", soap->error, *soap_faultcode(soap), *soap_faultstring(soap));
128             return ret;
129         }else{;
130             if(null != response->capabilities)
131             {
132                 if (response->capabilities->media != null){
133                     if (response->capabilities->media->xaddr != null){
134                         printf(" media_addr: %s \n", response->capabilities->media->xaddr); 
135                     }
136                 }
137             }
138         }
139     }
140  
141     if(null != req)
142     {
143         free(req);
144         req = null;
145     }
146  
147     onvif_soap_delete(soap);
148     return ret;
149 }

 

在编译之前要把：stdsoap2.c  soapc.c  md5.c dom.c mecevp.c smdevp.c threads.c wsaapi.c wsseapi.c soapclient.c   把这些.c 还有有些配套的.h  拷贝到当前工作目录下。

 

 

如果出现以下错误要在编译的时候加：-dwith_openssl

/tmp/cccao7u5.o：在函数‘soap_mec_init’中：
mecevp.c:(.text+0xe)：对‘soap_ssl_init’未定义的引用
/tmp/ccv2yl3q.o：在函数‘soap_smd_init’中：
smdevp.c:(.text+0x24c)：对‘soap_ssl_init’未定义的引用

 

 

编译：gcc -o test get_uri_test.c stdsoap2.c soapc.c md5.c dom.c mecevp.c smdevp.c threads.c wsaapi.c wsseapi.c soapclient.c -i import/ -dwith_openssl -lssl -lcrypto -ldl -pthread 

结果：成功得到我们想要的媒体地址