PapaTutuWawa/rio
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What is a CNAME?

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This commit is contained in:
PapaTutuWawa 2024-01-06 21:26:09 +01:00
parent 6f9f92e68a
commit e628ec7ecf
2 changed files with 8 additions and 8 deletions
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2
cmd/rio/main.go
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@ -26,8 +26,10 @@ import (
func handleSubdomain(domain, cname, path, giteaUrl, defaultCsp string, giteaClient *repo.GiteaClient, w http.ResponseWriter) { func handleSubdomain(domain, cname, path, giteaUrl, defaultCsp string, giteaClient *repo.GiteaClient, w http.ResponseWriter) {
username := "" username := ""
if cname != "" { if cname != "" {
// If we are accessed via a CNAME, then CNAME contains our <user>.<pages domain> value.
username = strings.Split(cname, ".")[0] username = strings.Split(cname, ".")[0]
} else { } else {
// If we are directly accessed, then domain contains our <user>.<pages domain> value.
username = strings.Split(domain, ".")[0] username = strings.Split(domain, ".")[0]
} }

14
internal/repo/repo.go
View File

@ -42,10 +42,6 @@ func makeCSPCacheKey(username, repositoryName string) string {
return username + ":" + repositoryName return username + ":" + repositoryName
} }
// / Try to find the repository with name @reponame of the user @username. If @cname
// / is not "", then it also verifies that the repository contains a "CNAME" with
// / the value of @cname as its content. @host, @domain, and @path are passed for
// / caching on success.
func lookupRepositoryAndCache(username, reponame, branchName, host, domain, path, cname string, giteaClient *GiteaClient) (*Repository, error) { func lookupRepositoryAndCache(username, reponame, branchName, host, domain, path, cname string, giteaClient *GiteaClient) (*Repository, error) {
log.Debugf("CNAME: %s", cname) log.Debugf("CNAME: %s", cname)
log.Debugf("Looking up repository %s/%s", username, reponame) log.Debugf("Looking up repository %s/%s", username, reponame)
@ -85,8 +81,8 @@ func lookupRepositoryAndCache(username, reponame, branchName, host, domain, path
) )
log.Debugf("CNAME Content: %s", cnameContent) log.Debugf("CNAME Content: %s", cnameContent)
if cnameContent != cname { if cnameContent != host {
log.Warnf("CNAME mismatch: Repo '%s', CNAME '%s'", cnameContent, cname) log.Warnf("CNAME mismatch: Repo '%s', Host '%s'", cnameContent, host)
return nil, errors.New("CNAME mismatch") return nil, errors.New("CNAME mismatch")
} }
} }
@ -103,6 +99,8 @@ func lookupRepositoryAndCache(username, reponame, branchName, host, domain, path
return &repo, nil return &repo, nil
} }
// host is the domain name we're accessed from. cname is the domain that host is pointing
// if, if we're accessed via a CNAME. If not, then cname is "".
func RepoFromPath(username, host, cname, path string, giteaClient *GiteaClient) (*Repository, string, error) { func RepoFromPath(username, host, cname, path string, giteaClient *GiteaClient) (*Repository, string, error) {
domain := host domain := host
@ -117,11 +115,11 @@ func RepoFromPath(username, host, cname, path string, giteaClient *GiteaClient)
// Allow specifying the repository name in the TXT record // Allow specifying the repository name in the TXT record
reponame := "" reponame := ""
if cname != "" { if cname != "" {
repoLookup, err := giteaClient.lookupRepoTXT(cname) repoLookup, err := giteaClient.lookupRepoTXT(host)
if err == nil && repoLookup != "" { if err == nil && repoLookup != "" {
log.Infof( log.Infof(
"TXT lookup for %s resulted in choosing repository %s", "TXT lookup for %s resulted in choosing repository %s",
cname, host,
repoLookup, repoLookup,
) )
reponame = repoLookup reponame = repoLookup