79 lines
1.5 KiB
Go
79 lines
1.5 KiB
Go
package middleware
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import (
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"net/http"
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"strings"
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"github.com/kirsle/blog/models/settings"
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"github.com/kirsle/blog/src/responses"
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"github.com/kirsle/blog/src/sessions"
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"github.com/urfave/negroni"
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)
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var ageGateSuffixes = []string{
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"/blog.rss", // Allow public access to RSS and Atom feeds.
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"/blog.atom",
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"/blog.json",
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".js",
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".css",
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".txt",
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".ico",
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".png",
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".jpg",
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".jpeg",
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".gif",
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".mp4",
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".webm",
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".ttf",
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".eot",
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".svg",
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".woff",
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".woff2",
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}
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// AgeGate is a middleware generator that does age verification for NSFW sites.
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func AgeGate(verifyHandler func(http.ResponseWriter, *http.Request)) negroni.HandlerFunc {
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middleware := func(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
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s, _ := settings.Load()
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if !s.Site.NSFW {
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next(w, r)
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return
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}
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path := r.URL.Path
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if strings.HasPrefix(path, "/age-verify") {
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verifyHandler(w, r) // defer to the age gate handler itself.
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return
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}
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// Allow static files and things through.
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for _, suffix := range ageGateSuffixes {
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if strings.HasSuffix(path, suffix) {
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next(w, r)
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return
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}
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}
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// POST requests are allowed.
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if r.Method == http.MethodPost {
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next(w, r)
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return
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}
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// See if they've been cleared.
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session := sessions.Get(r)
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if val, _ := session.Values["age-ok"].(bool); !val {
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// They haven't been verified.
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// Allow single-page loads with ?over18=1 in query parameter.
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if r.FormValue("over18") == "" {
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responses.Redirect(w, "/age-verify?next="+r.URL.Path)
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return
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}
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}
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next(w, r)
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}
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return middleware
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}
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