JNI Call to Authenticate user using LogonUser?

Question

Hey Folks,

C++ noob here wonding how i can authenticate a Windows User via Java servlet.

Here is the code i have put together to take in a JNI call from my java servlet with the user's username domain and password:

#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <stdlib.h> 

#include "Validate.h"    

JNIEXPORT jstring JNICALL Java_Validate_takeInfo(JNIEnv *env, jobject obj, jstring domain, jstring id, jstring idca, jstring password) 
{
    const char *nt_domain;
    const char *nt_id;
    const char *nt_idca;
    const char *nt_password;

    nt_domain = env->GetStringUTFChars(domain, NULL);
    nt_id = env->GetStringUTFChars(id, NULL);
    nt_idca= env->GetStringUTFChars(idca, NULL);
    nt_password = env->GetStringUTFChars(password, NULL);

    handle hToken = 0;
    char *otherString;
    otherString = LogonUser(nt_id, nt_domain, nt_password, LOGON32_LOGON_NETWORK, LOGON32_PROVIDER_DEFAULT, &hToken );

    jstring newString = env->NewStringUTF((const char*)otherString);
    return newString;
}

I get these errors when trying to compile:

D:\JNI\Validate.cpp(21) : error C2065: 'handle' : undeclared identifier
D:\JNI\Validate.cpp(21) : error C2146: syntax error : missing ';' before
ier 'hToken'
D:\JNI\Validate.cpp(21) : error C2065: 'hToken' : undeclared identifier
D:\JNI\Validate.cpp(24) : error C2065: 'LOGON32_LOGON_NETWORK' : undeclar
tifier
D:\JNI\Validate.cpp(24) : error C2065: 'LOGON32_PROVIDER_DEFAULT' : undec
dentifier
D:\JNI\Validate.cpp(24) : error C3861: 'LogonUser': identifier not found

I am assuming i am not including something i need. Any help is greatly appreciated.

Answer 1

That your compiler couldn't find LogonUser suggests that you're missing the windows headers. Include windows.h

Also, the generic windows handle type is spelled HANDLE, all in caps.

See the LogonUser docs for more details.