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Posted on 2010-09-06 23:39 roy 阅读(10861) 评论(0) 编辑 收藏 引用 所属分类: C/C++
- 上一节介绍了怎样实现基本认证(Basic Authentication，以下简称basic方式)，望文生义，也就是最简单的用户验证方式，本节稍微深入一些，介绍用户名令牌认证(Usernametoken Authentication，以下简称usernametoken方式)。
-
- Usernametoken方式与basic方式不同的地方，在于后者会把用户名和密码以摘要(digest)的形式，置于HTTP信息头，而前者则把用户名以明文的形式、密码以明文或者摘要的形式，嵌入到一段XML文本中，再置于SOAP消息头当中。
-
- 如果使用soapUI调试客户端程序的话，会发现以下是basic方式发出的完整的SOAP消息：
- POST https://test2.r-secure.com/Services/ECHO HTTP/0.9
- Content-Type: text/xml;charset=UTF-8
- SOAPAction: ""
- User-Agent: Jakarta Commons-HttpClient/3.1
- Content-Length: 292
- Authorization: Basic VkYtSEstbVNNST0OdlR42EMZaD1BMyE=
- Host: test2.r-secure.com
- Cookie: $Version=0; MSP2LB=test2.test2f02; $Path=/
-
- <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:echo="http://echo.rsecure.com/ECHO">
- <soapenv:Header/>
- <soapenv:Body>
- <echo:echo>
- <echo:EchoMessage>hello</echo:EchoMessage>
- </echo:echo>
- </soapenv:Body>
- </soapenv:Envelope>
-
- 以下是usernametoken方式发出的完整的SOAP消息：
- POST https://test.r-secure.com/4.0/services/SecureEcho HTTP/1.1
- Content-Type: text/xml;charset=UTF-8
- SOAPAction: ""
- User-Agent: Jakarta Commons-HttpClient/3.1
- Host: test.r-secure.com
- Content-Length: xxx
-
- <soapenv:Envelope xmlns:echo="http://echo.ws.rsecure.com" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
- <soapenv:Header>
- <wsse:Security soapenv:mustUnderstand="1" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
- <wsse:UsernameToken wsu:Id="UsernameToken-32870670" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
- <wsse:Username>roy</wsse:Username>
- <wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">liang</wsse:Password>
- <wsse:Nonce>LX4gh+njbEtCNAtkWkXDYA==</wsse:Nonce>
- <wsu:Created>2010-08-11T06:02:25.874Z</wsu:Created>
- </wsse:UsernameToken>
- </wsse:Security>
- <echo:customerId>G06164</echo:customerId>
- </soapenv:Header>
- <soapenv:Body>
- <echo:sendEcho>
- <echo:message>hello</echo:message>
- </echo:sendEcho>
- </soapenv:Body>
- </soapenv:Envelope>
-
- 其中，加粗部分表示两者的主要区别，红字部分表示各自必不可少的元素。
-
- 由此可以看出，usernametoken方式的特点，是在SOAP的header中加入一个Security标签，把usernametoken信息放在这个Security标签里。至于header里的另外一个customerId标签，是该应用自身的额外要求。
-
- gSOAP实现basic方式相对简单，不过实现usernametoken就比较复杂。gSOAP的用户指南推荐使用其自带的插件，在samples/wsse目录下的官方实例也是使用这个插件。但是，我个人认为这种方法比较累赘，自动生成的代码太多，不易看懂，而且似乎非常依赖于wsdl本身的写法。比如，samples/wsse目录下的官方实例含有下列表示SOAP header的结构体，但是，在我实际开发的应用并没有自动产生，即使强行加上去，编译执行通过，运行的时候也出现了相当多的错误。
 struct SOAP_ENV__Header
 {
 struct _wsse__Security *wsse__Security
 };
-
- 而且，从理论上讲，gSOAP不过是一个框架，定义了从SOAP对象到SOAP消息，以及从SOAP消息到SOAP对象的序列化过程，并且提供了一套与之相适应的API，使用gSOAP开发不过是在其框架范围内调用其API编程。框架的弊端，可想而知，限制了灵活，也限制了方便，更限制了创新。所以，我们可以使用gSOAP编程，但是也许没有必要全部照搬，至少在这个案例中，就没有必要照搬。
-
- 我们应有的思路是，既然customerId可以直接写到SOAP header中，那么与之并列的、含有usernametoken的Security也可以直接写到SOAP header中，完全不需要依赖于gSOAP的wsse插件。
-
- 与上节一样，基于保密原则，本节案例采用的wsdl同样是经过裁剪和替换的，内容如下：
-
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions targetNamespace="http://echo.ws.rsecure.com" xmlns:soapenc12="http://www.w3.org/2003/05/soap-encoding" xmlns:tns="http://echo.ws.rsecure.com" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap11="http://schemas.xmlsoap.org/soap/envelope/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soapenc11="http://schemas.xmlsoap.org/soap/encoding/" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
<wsdl:types>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" attributeFormDefault="qualified" elementFormDefault="qualified" targetNamespace="http://echo.ws.rsecure.com">
<xsd:element name="sendEcho">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="1" minOccurs="1" name="message" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="sendEchoResponse">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="1" minOccurs="1" name="out" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="showVersionInformation">
<xsd:complexType/>
</xsd:element>
<xsd:element name="showVersionInformationResponse">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="1" minOccurs="1" name="out" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="customerId" type="xsd:string"/>
</xsd:schema>
</wsdl:types>
<wsdl:message name="sendEchoRequestHeaders">
<wsdl:part name="customerId" element="tns:customerId">
</wsdl:part>
</wsdl:message>
<wsdl:message name="showVersionInformationRequestHeaders">
<wsdl:part name="customerId" element="tns:customerId">
</wsdl:part>
</wsdl:message>
<wsdl:message name="sendEchoResponse">
<wsdl:part name="parameters" element="tns:sendEchoResponse">
</wsdl:part>
</wsdl:message>
<wsdl:message name="showVersionInformationRequest">
<wsdl:part name="parameters" element="tns:showVersionInformation">
</wsdl:part>
</wsdl:message>
<wsdl:message name="sendEchoRequest">
<wsdl:part name="parameters" element="tns:sendEcho">
</wsdl:part>
</wsdl:message>
<wsdl:message name="showVersionInformationResponse">
<wsdl:part name="parameters" element="tns:showVersionInformationResponse">
</wsdl:part>
</wsdl:message>
<wsdl:portType name="SecureEcho">
<wsdl:operation name="sendEcho">
<wsdl:input name="sendEchoRequest" message="tns:sendEchoRequest">
</wsdl:input>
<wsdl:output name="sendEchoResponse" message="tns:sendEchoResponse">
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="showVersionInformation">
<wsdl:input name="showVersionInformationRequest" message="tns:showVersionInformationRequest">
</wsdl:input>
<wsdl:output name="showVersionInformationResponse" message="tns:showVersionInformationResponse">
</wsdl:output>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="SecureEchoHttpBinding" type="tns:SecureEcho">
<wsdlsoap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="sendEcho">
<wsdlsoap:operation soapAction=""/>
<wsdl:input name="sendEchoRequest">
<wsdlsoap:body use="literal"/>
<wsdlsoap:header message="tns:sendEchoRequestHeaders" part="customerId" use="literal">
</wsdlsoap:header>
</wsdl:input>
<wsdl:output name="sendEchoResponse">
<wsdlsoap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="showVersionInformation">
<wsdlsoap:operation soapAction=""/>
<wsdl:input name="showVersionInformationRequest">
<wsdlsoap:body use="literal"/>
<wsdlsoap:header message="tns:showVersionInformationRequestHeaders" part="customerId" use="literal">
</wsdlsoap:header>
</wsdl:input>
<wsdl:output name="showVersionInformationResponse">
<wsdlsoap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="SecureEcho">
<wsdl:port name="SecureEchoHttpPort" binding="tns:SecureEchoHttpBinding">
<wsdlsoap:address location="https://localhost:6883"/>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>
-
- 在gSOAP的wsdl目录，按以下步骤建立客户端存根程序：
- -bash-3.2$ mkdir –p secure_echo
- -bash-3.2$ cd secure_echo
- -bash-3.2$ ../wsdl2h –c –o secure_echo.h secure_echo.wsdl
- -bash-3.2$ ../../src/soapcpp2 –C –L –x secure_echo.h
-
- 重点来了，此时需要修改gSOAP为你自动生成的部分文件，加入usernametoken支持，以下是详细步骤，代码中加粗部分即修改的内容：
- 1. soapStub.h，搜索SOAP_ENV__Header结构体，本案例中，gSOAP只为我们自动生成了对应customerId的指针，因为需要在SOAP header中增加用户名和密码，所以要在这里手动添加这些信息。这样，修改后的SOAP_ENV__Header变为：
- struct SOAP_ENV__Header
- {
- char *wsse__username; /* mustUnderstand */
- char *wsse__password; /* mustUnderstand */
- char *ns1__customerId; /* mustUnderstand */
- };
- 2. soapC.c，搜索soap_out_SOAP_ENV__Header函数，这是客户端把SOAP对象转化为SOAP消息相关的函数，由于gSOAP只是自动生成了customerId属性的转化，我们还需要加入Security属性，按照soapUI测试好的结果，Security含有一个UsernameToken，而UsernameToken又含有用户名和密码，因此soap_out函数应当这样写：
- SOAP_FMAC3 int SOAP_FMAC4 soap_out_SOAP_ENV__Header(struct soap *soap, const char *tag, int id, const struct SOAP_ENV__Header *a, const char *type)
- {
- if (soap_element_begin_out(soap, tag, soap_embedded_id(soap, id, a, SOAP_TYPE_SOAP_ENV__Header), type))
- return soap->error;
- if (soap_element_begin_out(soap, "wsse:Security", -1, "")
- || soap_element_begin_out(soap, "wsse:UsernameToken", -1, "")
- || soap_out_string(soap, "wsse:Username", -1, &a->wsse__username, "")
- || soap_out_string(soap, "wsse:Password", -1, &a->wsse__password, "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText")
- || soap_element_end_out(soap, "wsse:UsernameToken")
- || soap_element_end_out(soap, "wsse:Security")
- )
- return soap->error;
- soap->mustUnderstand = 1;
- if (soap_out_string(soap, "ns1:customerId", -1, &a->ns1__customerId, ""))
- return soap->error;
- return soap_element_end_out(soap, tag);
- }
- 3. SecureEchoHttpBinding.nsmap，由于上一步用到了wsse这个namespace，而它又没有出现在nsmap文件中，因此我们需要增加该命名空间的信息，其URL同样可以从soapUI测试结果中取得：
- SOAP_NMAC struct Namespace namespaces[] =
- {
- {"SOAP-ENV", "http://schemas.xmlsoap.org/soap/envelope/", "http://www.w3.org/*/soap-envelope", NULL},
- {"SOAP-ENC", "http://schemas.xmlsoap.org/soap/encoding/", "http://www.w3.org/*/soap-encoding", NULL},
- {"xsi", "http://www.w3.org/2001/XMLSchema-instance", "http://www.w3.org/*/XMLSchema-instance", NULL},
- {"xsd", "http://www.w3.org/2001/XMLSchema", "http://www.w3.org/*/XMLSchema", NULL},
- {"ns1", "http://echo.ws.rsecure.com", NULL, NULL},
- {"wsse", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd", NULL, NULL},
- {NULL, NULL, NULL, NULL}
- };
-
- 存根程序修改完成，就可以开始编写客户端程序代码了。这个web service提供了两个接口，一个是secure_echo，也就是客户端送任意信息上来，服务端就返回相同的字符串，代码如下：
-
#include "soapH.h"
#include "SecureEchoHttpBinding.nsmap"
int main(int argc, char **argv) {
 if ( argc != 5 && argc != 6 ) {
printf("Usage: %s username password customer_id message [end_point]\n", argv[0]);
exit(-1);
 }
struct soap soap;
soap_init(&soap);
struct _ns1__sendEcho request;
struct _ns1__sendEchoResponse response;
soap_ssl_init();
if ( soap_ssl_client_context(&soap, SOAP_SSL_NO_AUTHENTICATION, NULL, NULL, NULL, NULL, NULL) ) {
soap_print_fault(&soap, stderr);
exit(-1);
}
struct SOAP_ENV__Header header;
header.wsse__username = argv[1];
header.wsse__password = argv[2];
header.ns1__customerId = argv[3];
soap.header = &header;
//soap_write_SOAP_ENV__Header(&soap, &header);
request.message = argv[4];
char *endpoint = NULL;
if ( argc == 6 )
endpoint = argv[5];
printf("username : %s\n", header.wsse__username);
printf("password : %s\n", header.wsse__password);
printf("customer id : %s\n", header.ns1__customerId);
printf("message : %s\n", request.message);
if ( endpoint )
printf("end point : %s\n", endpoint);
if ( soap_call___ns1__sendEcho(&soap, endpoint, NULL, &request, &response) == SOAP_OK ) {
printf("%s\n", response.out);
}
else {
soap_print_fault(&soap, stderr);
}
soap_destroy(&soap);
soap_end(&soap);
soap_done(&soap);
return 0;
}
-
- 另外一个是显示版本信息，代码如下：
-
#include "soapH.h"
#include "SecureEchoHttpBinding.nsmap"
int main(int argc, char **argv) {
if ( argc != 4 && argc != 5 ) {
printf("Usage: %s username password customer_id [end_point]\n", argv[0]);
exit(-1);
}
struct soap soap;
soap_init(&soap);
struct _ns1__showVersionInformation request;
struct _ns1__showVersionInformationResponse response;
soap_ssl_init();
if ( soap_ssl_client_context(&soap, SOAP_SSL_NO_AUTHENTICATION, NULL, NULL, NULL, NULL, NULL) ) {
soap_print_fault(&soap, stderr);
exit(-1);
}
struct SOAP_ENV__Header header;
header.wsse__username = argv[1];
header.wsse__password = argv[2];
header.ns1__customerId = argv[3];
soap.header = &header;
//soap_write_SOAP_ENV__Header(&soap, &header);
char *endpoint = NULL;
if ( argc == 5 )
endpoint = argv[4];
printf("username : %s\n", header.wsse__username);
printf("password : %s\n", header.wsse__password);
printf("customer id : %s\n", header.ns1__customerId);
if ( endpoint )
printf("end point : %s\n", endpoint);
if ( soap_call___ns1__showVersionInformation(&soap, endpoint, NULL, &request, &response) == SOAP_OK ) {
printf("%s\n", response.out);
}
else {
soap_print_fault(&soap, stderr);
}
soap_destroy(&soap);
soap_end(&soap);
soap_done(&soap);
return 0;
}
-
- 两个客户端程序都是一样的结构，仅仅是调用的接口不一样。与上一节的basic方式的客户端相比，usernametoken方式的用户密码不是保存在soap结构体的userid变量和passwd变量中，而是保存在header指针指向的SOAP_ENV__Header结构体中，这就是刚才我们为什么要修改SOAP_ENV__Header结构体的原因。
-
- 两个客户端程序分别保存为secure_echo.c和show_version.c，编译命令分别是：
- gcc -DWITH_OPENSSL -O2 -o secure_echo secure_echo.c soapC.c soapClient.c ../../stdsoap2.c -I../.. -L../.. -lgsoap -lssl
-
- gcc -DWITH_OPENSSL -O2 -o show_version show_version.c soapC.c soapClient.c ../../stdsoap2.c -I../.. -L../.. -lgsoap –lssl
-
- 由此可见，编译的源代码和链接的库文件都与上一节的没什么区别，没有使用额外的插件。
-
- 客户端程序搞掂，然后就是服务端了。
-
- 回到gSOAP的wsdl目录，按以下步骤建立服务端存根程序：
- -bash-3.2$ mkdir –p secure_echo_server
- -bash-3.2$ cd secure_echo_server
- -bash-3.2$ cp –p ../secure_echo/secure_echo.h .
- -bash-3.2$ ../../src/soapcpp2 –S –L –x secure_echo.h
-
- 与客户端程序一样，服务端同样要进行一些修改，步骤如下：
- 1. soapStub.h，与客户端的修改是一样的
- 2. soapC.c，搜索soap_in_SOAP_ENV__Header函数，注意客户端修改的是soap_out函数，这里是soap_in函数，是服务端把SOAP消息转化为SOAP对象的函数。由于客户端送上来的SOAP header消息含有Security属性，我们需要把它转为username和password。修改后的代码如下，加粗部分是修改内容：
- SOAP_FMAC3 struct SOAP_ENV__Header * SOAP_FMAC4 soap_in_SOAP_ENV__Header(struct soap *soap, const char *tag, struct SOAP_ENV__Header *a, const char *type)
- {
- size_t soap_flag_wsse__security = 1;
- size_t soap_flag_ns1__customerId = 1;
- if (soap_element_begin_in(soap, tag, 0, type))
- return NULL;
- a = (struct SOAP_ENV__Header *)soap_id_enter(soap, soap->id, a, SOAP_TYPE_SOAP_ENV__Header, sizeof(struct SOAP_ENV__Header), 0, NULL, NULL, NULL);
- if (!a)
- return NULL;
- soap_default_SOAP_ENV__Header(soap, a);
- if (soap->body && !*soap->href)
- {
- for (;;)
- {
- if ( soap_flag_wsse__security ) {
- if ( soap_element_begin_in(soap, NULL, 0, NULL) )
- return NULL;
- if ( soap_element_begin_in(soap, NULL, 0, NULL) )
- return NULL;
- if ( soap_in_string(soap, "", &a->wsse__username, "")
- && soap_in_string(soap, "", &a->wsse__password, "") ) {
- soap_flag_wsse__security--;
- soap_element_end_in(soap, NULL);
- soap_element_end_in(soap, NULL);
- }
- }
- soap->error = SOAP_TAG_MISMATCH;
- if (soap_flag_ns1__customerId && (soap->error == SOAP_TAG_MISMATCH || soap->error == SOAP_NO_TAG))
- if (soap_in_string(soap, "ns1:customerId", &a->ns1__customerId, "xsd:string"))
- { soap_flag_ns1__customerId--;
- continue;
- }
- if (soap->error == SOAP_TAG_MISMATCH)
- soap->error = soap_ignore_element(soap);
- if (soap->error == SOAP_NO_TAG)
- break;
- if (soap->error)
- return NULL;
- }
- if (soap_element_end_in(soap, tag))
- return NULL;
- }
- else
- { a = (struct SOAP_ENV__Header *)soap_id_forward(soap, soap->href, (void*)a, 0, SOAP_TYPE_SOAP_ENV__Header, 0, sizeof(struct SOAP_ENV__Header), 0, NULL);
- if (soap->body && soap_element_end_in(soap, tag))
- return NULL;
- }
- return a;
- }
-
- 服务端程序如下，到这里就没什么难度了，基本上与上一节的服务端结构差不多，注意要把几个pem证书拷贝过来（因为usernametoken方式通常都是基于HTTPS的），echo接口和show_version接口都要编写：
-
#include <pthread.h>
#include "soapH.h"
#include "SecureEchoHttpBinding.nsmap"
void *process_request(void *soap) {
pthread_detach(pthread_self());
if ( soap_ssl_accept((struct soap *) soap) != SOAP_OK )
soap_print_fault((struct soap *) soap, stderr);
else
soap_serve((struct soap *) soap);
soap_end((struct soap *) soap);
soap_free((struct soap *) soap);
return NULL;
}
int main(int argc, char **argv) {
if ( argc != 2 ) {
printf("Usage: %s port\n", argv[0]);
exit(-1);
}
int port = atol(argv[1]);
pthread_t tid;
struct soap *tsoap;
struct soap soap;
soap_init(&soap);
soap_ssl_init();
if ( soap_ssl_server_context(&soap, SOAP_SSL_DEFAULT, "server.pem", "password", "cacert.pem", NULL, "dh512.pem", NULL, argv[0]) ) {
soap_print_fault(&soap, stderr);
exit(-1);
}
int m, s;
if ( (m = soap_bind(&soap, NULL, port, 100)) < 0 ) {
soap_print_fault(&soap, stderr);
}
else {
printf("Socket connect successfully: master socket = %d\n", m);
int i = 0;
while ( 1 ) {
if ( (s = soap_accept(&soap)) < 0 ) {
soap_print_fault(&soap, stderr);
break;
}
printf("Connection %d accepted from IP = %d.%d.%d.%d, slave socket = %d\n", ++i, (soap.ip >> 24) & 0xff, (soap.ip >> 16) & 0xff, (soap.ip >> 8) & 0xff, soap.ip & 0xff, s);
tsoap = soap_copy(&soap);
if ( !tsoap ) {
soap_closesock(&soap);
continue;
}
pthread_create(&tid, NULL, &process_request, (void *) tsoap);
}
}
soap_done(&soap);
return 0;
}
int __ns1__sendEcho(
struct soap *soap,
struct _ns1__sendEcho *request,
struct _ns1__sendEchoResponse *response) {
if ( !soap->header || !soap->header->wsse__username || !soap->header->wsse__password || !soap->header->ns1__customerId
|| strcmp(soap->header->wsse__username, "roy") || strcmp(soap->header->wsse__password, "liang")
|| strcmp(soap->header->ns1__customerId, "G06164"))
return 401;
int len = strlen(request->message);
response->out = (char *) malloc(sizeof(char) * (len + 1));
strcpy(response->out, request->message);
return SOAP_OK;
}
int __ns1__showVersionInformation(
struct soap *soap,
struct _ns1__showVersionInformation *request,
struct _ns1__showVersionInformationResponse *response) {
if ( !soap->header || !soap->header->wsse__username || !soap->header->wsse__password || !soap->header->ns1__customerId
|| strcmp(soap->header->wsse__username, "roy") || strcmp(soap->header->wsse__password, "liang")
|| strcmp(soap->header->ns1__customerId, "G06164"))
return 401;
response->out = (char *) malloc(sizeof(char) * 100);
strcpy(response->out, "Username token (text) test server version 1.0");
return SOAP_OK;
}
-
- 服务端程序保存为secure_echo_server.c，编译命令是
- gcc -DWITH_OPENSSL -O2 -o secure_echo_server secure_echo_server.c soapC.c soapServer.c ../../stdsoap2.c -I../.. -L../.. -lgsoap -lssl –lcrypto
-
- 运行测试，在6883端口启动服务端，然后执行客户端
- -bash-3.2$ ./show_version roy liang G06164
- username : roy
- password : liang
- customer id : G06164
- Username token (text) test server version 1.0
-
- -bash-3.2$ ./secure_echo roy liang G06164 hello
- username : roy
- password : liang
- customer id : G06164
- message : hello
- hello
-
- 以上就是gSOAP实现Usernametoken认证的方法，而且是通过自定义SOAP header实现的。个人认为，与使用wsse插件相比，这种方法更为简单直接。
-
- 另外，本案例的方法适用于以明文传送密码的情况，如果需要以摘要(digest)形式传送密码，请参考plugin目录wsseapi.c里面的soap_wsse_add_UsernameTokenDigest函数。
-
- 最后，感谢Codejie's C++ Space为本节的编写提供思路：
- http://www.cppblog.com/codejie/archive/2010/04/07/89972.html
-
- 这是我在CSDN的本文链接
- http://blog.csdn.net/yui/archive/2010/09/03/5862411.aspx
-
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