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package twofactorverify
import (
"context"
"fmt"
"io"
"gitlab.com/gitlab-org/labkit/log"
"gitlab.com/gitlab-org/gitlab-shell/v14/internal/command/commandargs"
"gitlab.com/gitlab-org/gitlab-shell/v14/internal/command/readwriter"
"gitlab.com/gitlab-org/gitlab-shell/v14/internal/config"
"gitlab.com/gitlab-org/gitlab-shell/v14/internal/gitlabnet/twofactorverify"
)
type Command struct {
Config *config.Config
Args *commandargs.Shell
ReadWriter *readwriter.ReadWriter
}
func (c *Command) Execute(ctx context.Context) error {
ctxlog := log.ContextLogger(ctx)
ctxlog.Info("twofactorverify: execute: waiting for user input")
otp := c.getOTP(ctx)
ctxlog.Info("twofactorverify: execute: verifying entered OTP")
err := c.verifyOTP(ctx, otp)
if err != nil {
ctxlog.WithError(err).Error("twofactorverify: execute: OTP verification failed")
return err
}
ctxlog.WithError(err).Info("twofactorverify: execute: OTP verified")
return nil
}
func (c *Command) getOTP(ctx context.Context) string {
prompt := "OTP: "
fmt.Fprint(c.ReadWriter.Out, prompt)
var answer string
otpLength := int64(64)
reader := io.LimitReader(c.ReadWriter.In, otpLength)
if _, err := fmt.Fscanln(reader, &answer); err != nil {
log.ContextLogger(ctx).WithError(err).Debug("twofactorverify: getOTP: Failed to get user input")
}
return answer
}
func (c *Command) verifyOTP(ctx context.Context, otp string) error {
client, err := twofactorverify.NewClient(c.Config)
if err != nil {
return err
}
err = client.VerifyOTP(ctx, c.Args, otp)
if err == nil {
fmt.Fprint(c.ReadWriter.Out, "\nOTP validation successful. Git operations are now allowed.\n")
} else {
fmt.Fprintf(c.ReadWriter.Out, "\nOTP validation failed.\n%v\n", err)
}
return nil
}
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