用户名密码认证

 

思路：

1.从配置文件中读取合法的用户名和密码信息

2.从窗口获取用户输入的用户名密码信息并进行匹配

 

1.从配置文件中读取合法的用户名和密码信息

将从配置文件中读取的信息存入结构体UserInfor * m_userlist;中

配置文件的格式如下（@隔开用户名和密码）：

 

UserCount = 2

testusername1@testpassword1

1@1

const TCHAR configFile[MAX_PATH] = L"User configure.txt";typedef TCHAR MTCHAR[MAX_PATH];//存储结构体UserInfor * m_userlist;typedef struct UserInfor{WCHAR username[MAX_PATH];WCHAR password[MAX_PATH];};typedef TCHAR MTCHAR[MAX_PATH];BOOL LoadSettings(){FILE* fp = NULL;const int BUFLEN = 1024;WCHAR buf[BUFLEN] = {0};WCHAR content[MAX_PATH] = {0};int rst = 0;int vlen = 0;LPTSTR value = NULL;WCHAR flag;fp = _wfopen(configFile, _T("r"));if (fp == NULL){const char * error = "打开文件失败！";log(error, strlen(error));return FALSE;}fgetws(buf, BUFLEN, fp);if (feof(fp) || swscanf(buf, L"UserCount = %d", &m_UserCount) != 1)m_UserCount = 0;m_userlist = NULL;if (m_UserCount > 0){m_userlist = new UserInfor[m_UserCount];}for(int i=0; i<m_UserCount; i++){if (feof(fp))break;fgetws(buf, BUFLEN, fp);WCHAR * p = wcschr(buf, L'@');if(p !=NULL ){int n = wcslen(buf);if(buf[n-1] == L'/n' ||buf[n-1] == L'/r'){buf[n-1] = L'/0';}wcscpy(m_userlist[i].password, p+1);*p = L'/0';wcscpy(m_userlist[i].username, buf);}else{const char * error = "读取文件为空！";log(error, strlen(error));return false;}}fclose(fp);return TRUE;} 

2.从窗口获取用户输入的用户名密码信息并进行匹配

void CAuthDlg::OnBnClickedLoginIn(){// TODO: 在此添加控件通知处理程序代码UpdateData(true);if(m_username.GetLength()<1 || m_password.GetLength()<1){MessageBox(L"Access Denied!");return;}int i = 0;MTCHAR username = {0};MTCHAR password = {0};wcscpy(username, m_username.GetBuffer(m_username.GetLength()));wcscpy(password, m_password.GetBuffer(m_password.GetLength()));for(i=0; i<m_UserCount; i++){if(wcscmp(m_userlist[i].username, username) == 0 && wcscmp(m_userlist[i].password, password) == 0){break;}}if(i == m_UserCount){MessageBox(L"Access Denied!");m_username = L"";m_password = L"";UpdateData(false);}else{OnCancel();}}