57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#include <stdio.h>
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#include<string.h>
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#include "./include/function.h"
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#include "./include/ui.h"
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void Login(char *username,char*password,int *recall,char *errmsg){
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sqlite3 *db;
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int rc;
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// 打开数据库
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rc = sqlite3_open("./data/msg.db", &db);
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if (rc) {
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strcpy(errmsg,"Error:database error.");
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*recall=-1;
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return;
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}
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// SQL 查询语句：查找用户及其密码
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const char *sql = "SELECT user, password FROM users WHERE user = ?;";
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sqlite3_stmt *stmt;
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// 编译 SQL 语句
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rc = sqlite3_prepare_v2(db, sql, -1, &stmt, 0);
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if (rc != SQLITE_OK) {
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strcpy(errmsg,"Error:database error.");
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*recall=-1;
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sqlite3_close(db);
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return;
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}
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// 绑定查询参数
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sqlite3_bind_text(stmt, 1, username, -1, SQLITE_STATIC);
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rc = sqlite3_step(stmt);
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if (rc == SQLITE_ROW) {
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// 查找到用户，获取密码
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const char *db_password = (const char *)sqlite3_column_text(stmt, 1);
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// 如果密码匹配
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if (db_password && strcmp(db_password, password) == 0) {
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*recall=0;
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} else {
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strcpy(errmsg,"Incorrect username or password.");
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*recall=-1;
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}
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} else {
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strcpy(errmsg,"Incorrect username or password.");
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*recall=-1;
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}
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// 绑定查询参数
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// 清理资源
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sqlite3_finalize(stmt);
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sqlite3_close(db);
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return;
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}
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