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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：
我要评论 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
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