pages-server/cmd/main.go
2021-12-05 15:53:46 +01:00

123 lines
4.2 KiB
Go

package cmd
import (
"bytes"
"crypto/tls"
"errors"
"fmt"
"net"
"strings"
"github.com/rs/zerolog/log"
"github.com/urfave/cli/v2"
"codeberg.org/codeberg/pages/server"
"codeberg.org/codeberg/pages/server/cache"
"codeberg.org/codeberg/pages/server/certificates"
"codeberg.org/codeberg/pages/server/database"
)
// AllowedCorsDomains lists the domains for which Cross-Origin Resource Sharing is allowed.
// TODO: make it a flag
var AllowedCorsDomains = [][]byte{
[]byte("fonts.codeberg.org"),
[]byte("design.codeberg.org"),
}
// BlacklistedPaths specifies forbidden path prefixes for all Codeberg Pages.
// TODO: Make it a flag too
var BlacklistedPaths = [][]byte{
[]byte("/.well-known/acme-challenge/"),
}
// Serve sets up and starts the web server.
func Serve(ctx *cli.Context) error {
giteaRoot := strings.TrimSuffix(ctx.String("gitea-root"), "/")
giteaAPIToken := ctx.String("gitea-api-token")
rawDomain := ctx.String("raw-domain")
mainDomainSuffix := []byte(ctx.String("pages-domain"))
rawInfoPage := ctx.String("raw-info-page")
listeningAddress := fmt.Sprintf("%s:%s", ctx.String("host"), ctx.String("port"))
enableHTTPServer := ctx.Bool("enable-http-server")
acmeAPI := ctx.String("acme-api-endpoint")
acmeMail := ctx.String("acme-email")
acmeUseRateLimits := ctx.Bool("acme-use-rate-limits")
acmeAcceptTerms := ctx.Bool("acme-accept-terms")
acmeEabKID := ctx.String("acme-eab-kid")
acmeEabHmac := ctx.String("acme-eab-hmac")
dnsProvider := ctx.String("dns-provider")
if acmeAcceptTerms || (dnsProvider == "" && acmeAPI != "https://acme.mock.directory") {
return errors.New("you must set $ACME_ACCEPT_TERMS and $DNS_PROVIDER, unless $ACME_API is set to https://acme.mock.directory")
}
allowedCorsDomains := AllowedCorsDomains
if len(rawDomain) != 0 {
allowedCorsDomains = append(allowedCorsDomains, []byte(rawDomain))
}
// Make sure MainDomain has a trailing dot, and GiteaRoot has no trailing slash
if !bytes.HasPrefix(mainDomainSuffix, []byte{'.'}) {
mainDomainSuffix = append([]byte{'.'}, mainDomainSuffix...)
}
keyCache := cache.NewKeyValueCache()
challengeCache := cache.NewKeyValueCache()
// canonicalDomainCache stores canonical domains
var canonicalDomainCache = cache.NewKeyValueCache()
// dnsLookupCache stores DNS lookups for custom domains
var dnsLookupCache = cache.NewKeyValueCache()
// branchTimestampCache stores branch timestamps for faster cache checking
var branchTimestampCache = cache.NewKeyValueCache()
// fileResponseCache stores responses from the Gitea server
// TODO: make this an MRU cache with a size limit
var fileResponseCache = cache.NewKeyValueCache()
// Create handler based on settings
handler := server.Handler(mainDomainSuffix, []byte(rawDomain),
giteaRoot, rawInfoPage, giteaAPIToken,
BlacklistedPaths, allowedCorsDomains,
dnsLookupCache, canonicalDomainCache, branchTimestampCache, fileResponseCache)
fastServer := server.SetupServer(handler)
httpServer := server.SetupHttpACMEChallengeServer(challengeCache)
// Setup listener and TLS
log.Info().Msgf("Listening on https://%s", listeningAddress)
listener, err := net.Listen("tcp", listeningAddress)
if err != nil {
return fmt.Errorf("couldn't create listener: %s", err)
}
// TODO: make "key-database.pogreb" set via flag
keyDatabase, err := database.New("key-database.pogreb")
if err != nil {
return fmt.Errorf("could not create database: %v", err)
}
defer keyDatabase.Sync() //nolint:errcheck // database has no close ... sync behave like it
listener = tls.NewListener(listener, certificates.TLSConfig(mainDomainSuffix,
giteaRoot, giteaAPIToken, dnsProvider,
acmeUseRateLimits,
keyCache, challengeCache, dnsLookupCache, canonicalDomainCache,
keyDatabase))
certificates.SetupCertificates(mainDomainSuffix, acmeAPI, acmeMail, acmeEabHmac, acmeEabKID, dnsProvider, acmeUseRateLimits, acmeAcceptTerms, enableHTTPServer, challengeCache, keyDatabase)
if enableHTTPServer {
go func() {
err := httpServer.ListenAndServe("[::]:80")
if err != nil {
log.Panic().Err(err).Msg("Couldn't start HTTP fastServer")
}
}()
}
// Start the web fastServer
err = fastServer.Serve(listener)
if err != nil {
log.Panic().Err(err).Msg("Couldn't start fastServer")
}
return nil
}