一个简单的wed服务器SHTTPD（6）———— SHTTPD错误处理的实现

//start from the very beginning,and to create greatness
//@author: Chuangwei Lin
//@E-mail：979951191@qq.com
//@brief： SHTTPD错误处理的实现
#include "lcw_shttpd.h"
//错误代码定义如下
enum
{
    ERROR301, ERROR302, ERROR303, ERROR304, ERROR305, ERROR307,
    ERROR400, ERROR401, ERROR402, ERROR403, ERROR404, ERROR405, ERROR406, 
    ERROR407, ERROR408, ERROR409, ERROR410, ERROR411, ERROR412, ERROR413,
    ERROR414, ERROR415, ERROR416, ERROR417,
    ERROR500, ERROR501, ERROR502, ERROR503, ERROR504, ERROR505
};
//全局错误信息结构体
struct error_mine
{
    int error_code;//错误代码
    char *content;//错误信息
    char *msg;//含义
    int status;//状态
};
//全局错误信息数组
struct error_mine _error_http[]=
{
    {ERROR301, "Error: 301", "永久移动",         301},
    {ERROR302, "Error: 302", "创建",             302},
    {ERROR303, "Error: 303", "观察别的部分",     303},
    {ERROR304, "Error: 304", "只读",             304},
    {ERROR305, "Error: 305", "用户代理",         305},
    {ERROR307, "Error: 307", "临时重发",         307},    
    {ERROR400, "Error: 400", "坏请求",             400},
    {ERROR401, "Error: 401", "未授权的",         401},
    {ERROR402, "Error: 402", "必要的支付",         402},
    {ERROR403, "Error: 403", "禁用",             403},
    {ERROR404, "Error: 404", "没找到",             404},
    {ERROR405, "Error: 405", "不允许的方式",     405},
    {ERROR406, "Error: 406", "不接受",             406},
    {ERROR407, "Error: 407", "需要代理验证",     407},
    {ERROR408, "Error: 408", "请求超时",         408},
    {ERROR409, "Error: 409", "冲突",             409},
    {ERROR410, "Error: 410", "停止",             410},
    {ERROR411, "Error: 411", "需要的长度",         411},
    {ERROR412, "Error: 412", "预处理失败",         412},
    {ERROR413, "Error: 413", "请求实体太大",     413},
    {ERROR414, "Error: 414", "请求-URI太大",     414},
    {ERROR415, "Error: 415", "不支持的媒体类型",415},
    {ERROR416, "Error: 416", "请求的范围不满足",416},
    {ERROR417, "Error: 417", "期望失败",         417},
    {ERROR500, "Error: 500", "服务器内部错误", 500},
    {ERROR501, "Error: 501", "不能实现",         501},
    {ERROR502, "Error: 502", "坏网关",             502},
    {ERROR503, "Error: 503", "服务不能实现",     503},
    {ERROR504, "Error: 504", "网关超时",         504},
    {ERROR505, "Error: 505", "HTTP版本不支持", 505}
};


void Error_400(struct worker_ctl* wctl)
{
    ;
}

void Error_403(struct worker_ctl* wctl)
{
    ;
}

void Error_404(struct worker_ctl* wctl)
{
    ;
}

void Error_505(struct worker_ctl* wctl)
{
    ;
}

/******************************************************
函数名：GenerateErrorMine(struct worker_ctl * wctl)
参数：
功能：错误类型生成
*******************************************************/
int GenerateErrorMine(struct worker_ctl * wctl)
{
    struct error_mine *err = NULL;//错误类型
    int i = 0;
    //轮询查找类型匹配的错误类型
    for(err = &_error_http[i];err->status != wctl->conn.con_res.status;i++);//这句感觉怪怪的，如果一直找不到

    if(err->status != wctl->conn.con_res.status)
    {
        err = &_error_http[0]; //没有找到的错误类型为第一个
    }
    //构建信息头部
    snprintf(wctl->conn.dres, sizeof(wctl->conn.dres),
        "HTTP/%lu.%lu %d %s\r\n"
        "Content-Type:%s\r\n"
        "Content-Length:%d\r\n"
        "\r\n"
        "%s",
        wctl->conn.con_req.major,
        wctl->conn.con_req.minor,
        err->status,
        err->msg,
        "text/plain",
        strlen(err->content),
        err->content);

    wctl->conn.con_res.cl = strlen(err->content);//内容长度
    wctl->conn.con_res.fd = -1;//无文件可读
    wctl->conn.con_res.status = 400;//错误代码

    return 0;
}