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Proper Location redirects are disadvantageous in some situations. For example, you may want a developer to know that a resource is available via https, but you don't want an insecure call to the API to succeed.
83 lines
1.8 KiB
Go
83 lines
1.8 KiB
Go
package setup
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import (
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"net/http"
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"github.com/mholt/caddy/middleware"
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"github.com/mholt/caddy/middleware/redirect"
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)
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// Redir configures a new Redirect middleware instance.
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func Redir(c *Controller) (middleware.Middleware, error) {
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rules, err := redirParse(c)
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if err != nil {
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return nil, err
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}
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return func(next middleware.Handler) middleware.Handler {
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return redirect.Redirect{Next: next, Rules: rules}
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}, nil
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}
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func redirParse(c *Controller) ([]redirect.Rule, error) {
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var redirects []redirect.Rule
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for c.Next() {
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var rule redirect.Rule
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args := c.RemainingArgs()
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// Always set the default Code, then overwrite
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rule.Code = http.StatusMovedPermanently
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switch len(args) {
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case 1:
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// To specified
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rule.From = "/"
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rule.To = args[0]
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case 2:
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// To and Code specified
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rule.From = "/"
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rule.To = args[0]
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if "meta" == args[1] {
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rule.Meta = true
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} else if code, ok := httpRedirs[args[1]]; !ok {
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return redirects, c.Err("Invalid redirect code '" + args[1] + "'")
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} else {
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rule.Code = code
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}
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case 3:
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// From, To, and Code specified
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rule.From = args[0]
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rule.To = args[1]
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if "meta" == args[2] {
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rule.Meta = true
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} else if code, ok := httpRedirs[args[2]]; !ok {
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return redirects, c.Err("Invalid redirect code '" + args[2] + "'")
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} else {
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rule.Code = code
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}
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default:
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return redirects, c.ArgErr()
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}
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if rule.From == rule.To {
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return redirects, c.Err("Redirect rule cannot allow From and To arguments to be the same.")
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}
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redirects = append(redirects, rule)
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}
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return redirects, nil
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}
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// httpRedirs is a list of supported HTTP redirect codes.
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var httpRedirs = map[string]int{
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"300": 300,
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"301": 301,
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"302": 302,
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"303": 303,
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"304": 304,
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"305": 305,
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"307": 307,
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"308": 308,
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}
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