60 lines
1.9 KiB
Go
60 lines
1.9 KiB
Go
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package model
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import "errors"
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// Captcha 结构体定义了验证码的属性
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type Captcha struct {
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NonceStr string `json:"nonceStr"` // 随机字符串，用于唯一标识验证码
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CanvasSrc string `json:"canvasSrc"` // 画布图像的Base64编码字符串
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BlockSrc string `json:"blockSrc"` // 块图像的Base64编码字符串
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BlockX int `json:"blockX"` // 块图像在画布上的X轴位置
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BlockY int `json:"blockY"` // 块图像在画布上的Y轴位置
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CanvasWidth int `json:"canvasWidth"` // 画布的宽度
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CanvasHeight int `json:"canvasHeight"` // 画布的高度
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BlockWidth int `json:"blockWidth"` // 块图像的宽度
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BlockHeight int `json:"blockHeight"` // 块图像的高度
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BlockRadius int `json:"blockRadius"` // 块图像的圆角半径
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Place int `json:"place"` // 图像来源标识，0表示URL下载，1表示本地文件
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}
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// Verification 结构体定义了验证验证码的属性
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type Verification struct {
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NonceStr string `json:"nonceStr"` // 随机字符串，用于唯一标识验证码
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BlockX string `json:"blockX"` // 画布图像的Base64编码字符串
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}
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// 检查并设置验证码的默认参数
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func CheckCaptcha(captcha *Captcha) (err error) {
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// 参数值不可以小于15
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if captcha.CanvasWidth < 41 || captcha.CanvasHeight < 26 {
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captcha.CanvasWidth = 320
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captcha.CanvasHeight = 155
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}
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if captcha.BlockWidth < 15 || captcha.BlockHeight < 15 {
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captcha.BlockWidth = 65
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captcha.BlockHeight = 55
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}
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if captcha.BlockRadius < 5 {
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captcha.BlockRadius = 9
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}
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if captcha.Place == 0 {
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captcha.Place = 0
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}
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if (captcha.CanvasWidth-10)/2 <= captcha.BlockWidth {
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err = errors.New("请输入符合规范的像素值")
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return
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}
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if captcha.CanvasHeight-captcha.BlockHeight <= 10 {
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err = errors.New("请输入符合规范的像素值")
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return
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}
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return
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}
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