71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
package handlers
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import (
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"net/http"
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"git.haelnorr.com/h/golib/cookies"
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"git.haelnorr.com/h/golib/hws"
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"github.com/pkg/errors"
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"git.haelnorr.com/h/oslstats/internal/config"
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"git.haelnorr.com/h/oslstats/internal/discord"
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"git.haelnorr.com/h/oslstats/internal/store"
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"git.haelnorr.com/h/oslstats/pkg/oauth"
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)
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func Login(server *hws.Server, cfg *config.Config, st *store.Store, discordAPI *discord.APIClient) http.Handler {
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return http.HandlerFunc(
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func(w http.ResponseWriter, r *http.Request) {
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cookies.SetPageFrom(w, r, cfg.HWSAuth.TrustedHost)
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// Track login redirect attempts
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attempts, exceeded, track := st.TrackRedirect(r, "/login", 5)
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if exceeded {
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// Build detailed error for logging
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err := errors.Errorf(
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"login redirect loop detected after %d attempts | ip=%s ua=%s path=%s first_seen=%s",
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attempts,
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track.IP,
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track.UserAgent,
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track.Path,
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track.FirstSeen.Format("2006-01-02T15:04:05Z07:00"),
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)
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// Clear the tracking entry
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st.ClearRedirectTrack(r, "/login")
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// Show error page
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throwError(
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server,
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w,
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r,
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http.StatusBadRequest,
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"Login failed: Too many redirect attempts. Please clear your browser cookies and try again.",
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err,
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"warn",
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)
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return
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}
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state, uak, err := oauth.GenerateState(cfg.OAuth, "login")
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if err != nil {
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throwInternalServiceError(server, w, r, "Failed to generate state token", err)
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return
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}
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oauth.SetStateCookie(w, uak, cfg.HWSAuth.SSL)
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link, err := discord.GetOAuthLink(cfg.Discord, state, cfg.HWSAuth.TrustedHost)
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if err != nil {
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throwInternalServiceError(server, w, r, "An error occurred trying to generate the login link", err)
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return
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}
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// SUCCESS POINT: OAuth link generated, redirecting to Discord
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// Clear redirect tracking - user successfully initiated OAuth
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st.ClearRedirectTrack(r, "/login")
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http.Redirect(w, r, link, http.StatusSeeOther)
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},
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)
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}
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