pages-server/server/handler/try.go
6543 6c63b66ce4 Refactor split long functions (#135)
we have big functions that handle all stuff ... we should split this into smaler chuncks so we could test them seperate and make clear cuts in what happens where

Reviewed-on: https://codeberg.org/Codeberg/pages-server/pulls/135
2022-11-12 20:43:44 +01:00

76 lines
2.6 KiB
Go

package handler
import (
"net/http"
"strings"
"github.com/rs/zerolog"
"codeberg.org/codeberg/pages/html"
"codeberg.org/codeberg/pages/server/cache"
"codeberg.org/codeberg/pages/server/context"
"codeberg.org/codeberg/pages/server/gitea"
"codeberg.org/codeberg/pages/server/upstream"
)
// tryUpstream forwards the target request to the Gitea API, and shows an error page on failure.
func tryUpstream(ctx *context.Context, giteaClient *gitea.Client,
mainDomainSuffix, trimmedHost string,
options *upstream.Options,
canonicalDomainCache cache.SetGetKey,
) {
// check if a canonical domain exists on a request on MainDomain
if strings.HasSuffix(trimmedHost, mainDomainSuffix) {
canonicalDomain, _ := options.CheckCanonicalDomain(giteaClient, "", string(mainDomainSuffix), canonicalDomainCache)
if !strings.HasSuffix(strings.SplitN(canonicalDomain, "/", 2)[0], string(mainDomainSuffix)) {
canonicalPath := ctx.Req.RequestURI
if options.TargetRepo != "pages" {
path := strings.SplitN(canonicalPath, "/", 3)
if len(path) >= 3 {
canonicalPath = "/" + path[2]
}
}
ctx.Redirect("https://"+canonicalDomain+canonicalPath, http.StatusTemporaryRedirect)
return
}
}
// add host for debugging
options.Host = string(trimmedHost)
// Try to request the file from the Gitea API
if !options.Upstream(ctx, giteaClient) {
html.ReturnErrorPage(ctx, "", ctx.StatusCode)
}
}
// tryBranch checks if a branch exists and populates the target variables. If canonicalLink is non-empty,
// it will also disallow search indexing and add a Link header to the canonical URL.
func tryBranch(log zerolog.Logger, ctx *context.Context, giteaClient *gitea.Client,
targetOptions *upstream.Options, canonicalLink bool,
) (*upstream.Options, bool) {
if targetOptions.TargetOwner == "" || targetOptions.TargetRepo == "" {
log.Debug().Msg("tryBranch: owner or repo is empty")
return nil, false
}
// Replace "~" to "/" so we can access branch that contains slash character
// Branch name cannot contain "~" so doing this is okay
targetOptions.TargetBranch = strings.ReplaceAll(targetOptions.TargetBranch, "~", "/")
// Check if the branch exists, otherwise treat it as a file path
branchExist, _ := targetOptions.GetBranchTimestamp(giteaClient)
if !branchExist {
log.Debug().Msg("tryBranch: branch doesn't exist")
return nil, false
}
if canonicalLink {
// Hide from search machines & add canonical link
ctx.RespWriter.Header().Set("X-Robots-Tag", "noarchive, noindex")
ctx.RespWriter.Header().Set("Link", targetOptions.ContentWebLink(giteaClient)+"; rel=\"canonical\"")
}
log.Debug().Msg("tryBranch: true")
return targetOptions, true
}