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Author SHA1 Message Date
f092520ee4 chore: tidy deps
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2024-06-26 16:31:14 +02:00
9084b6e05f Merge pull request 'Implémentation des proxies "passthrough"' (#30) from passthrough-proxy into develop
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Reviewed-on: #30
2024-06-26 16:23:28 +02:00
5494abded4 feat: passthrough proxies
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2024-06-26 16:22:30 +02:00
059af1b6ee fix: add missing templates in docker image
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2024-06-26 15:00:23 +02:00
532f30c155 chore: remove artefact Dockerfile
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2024-06-26 15:00:07 +02:00
49f2ccbc7a feat: templatized proxy error page
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2024-06-26 14:36:28 +02:00
23 changed files with 317 additions and 151 deletions

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@ -63,6 +63,9 @@ nfpms:
- src: layers
dst: /etc/bouncer/layers
type: config
- src: templates
dst: /etc/bouncer/templates
type: config
- dst: /etc/bouncer/bootstrap.d
type: dir
file_info:

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@ -22,6 +22,7 @@ RUN make GORELEASER_ARGS='build --rm-dist --single-target --snapshot' goreleaser
# Patch config
RUN /src/dist/bouncer_linux_amd64_v1/bouncer -c '' config dump > /src/dist/bouncer_linux_amd64_v1/config.yml \
&& yq -i '.proxy.templates.dir = "/usr/share/bouncer/templates"' /src/dist/bouncer_linux_amd64_v1/config.yml \
&& yq -i '.layers.queue.templateDir = "/usr/share/bouncer/layers/queue/templates"' /src/dist/bouncer_linux_amd64_v1/config.yml \
&& yq -i '.layers.authn.templateDir = "/usr/share/bouncer/layers/authn/templates"' /src/dist/bouncer_linux_amd64_v1/config.yml \
&& yq -i '.admin.auth.privateKey = "/etc/bouncer/admin-key.json"' /src/dist/bouncer_linux_amd64_v1/config.yml \
@ -42,6 +43,7 @@ RUN mkdir -p /usr/local/bin /usr/share/bouncer/bin /etc/bouncer
COPY --from=BUILD /src/dist/bouncer_linux_amd64_v1/bouncer /usr/share/bouncer/bin/bouncer
COPY --from=BUILD /src/layers /usr/share/bouncer/layers
COPY --from=BUILD /src/templates /usr/share/bouncer/templates
COPY --from=BUILD /src/dist/bouncer_linux_amd64_v1/config.yml /etc/bouncer/config.yml
RUN ln -s /usr/share/bouncer/bin/bouncer /usr/local/bin/bouncer

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@ -4,7 +4,16 @@
# Bouncer
Serveur mandataire inverse (_"reverse proxy"_) filtrant avec gestion de files d'attente dynamiques.
Serveur mandataire inverse (_"reverse proxy"_) avec fonctionnalités avancées pilotable par API REST.
## Fonctionnalités
- Authentification unique basée sur entêtes HTTP ("Trusted headers SSO") avec:
- Fournisseur d'identité OpenID Connect ;
- Basic Auth ;
- Origine réseau ;
- Gestion de files d'attente dynamiques pour maîtriser la charge sur les services protégés ;
- Réécriture dynamique des attributs (notamment entêtes HTTP) des requêtes/réponses via un DSL.
## Documentation
@ -12,4 +21,4 @@ Serveur mandataire inverse (_"reverse proxy"_) filtrant avec gestion de files d'
## Licence
AGPL-3.0
AGPL-3.0

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@ -1,7 +1,8 @@
# Documentation
- [(FR) - Premiers pas](./fr/getting-started.md)
- [(FR) - Architecture générale](./fr/general-architecture.md)
- [(FR) - Terminologie](./fr/terminology.md)
- [(FR) - Premiers pas](./fr/getting-started.md)
## Exemples

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@ -2,31 +2,6 @@
## Modèles de déploiement
### Déploiement mono-noeud
### Mode mono-noeud
![](../resources/deployment_fr.png)
## Terminologie
Voici une liste des termes utilisés dans le lexique Bouncer.
### Proxy
Un "proxy" est une entité logique définissant le relation suivante:
- Un ou plusieurs patrons de filtrage sous la forme d'un patron d'URL avec le caractère `*` comme caractère générique. Ceux ci identifient le ou les domaines/chemins associés à l'entité;
- Une URL cible qui servira de base pour la réécriture des requêtes.
Un "proxy" peut avoir zéro ou plusieurs "layers" associés.
Un "proxy" peut être activé ou désactivé.
Un "proxy" a un poids qui définit son niveau de priorité dans la pile de traitement (plus son poids est élevé plus il est prioritaire).
### Layer
Un "layer" (calque) est une entité logique définissant un traitement à appliquer aux requêtes et/ou aux réponses transitant par un proxy.
Un "layer" peut être activé ou désactivé.
Un "layer" a un poids qui définit son niveau de priorité dans la pile de traitement (plus son poids est élevé plus il est prioritaire).
![](../resources/deployment_single_node_fr.png)

29
doc/fr/terminology.md Normal file
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@ -0,0 +1,29 @@
# Terminologie
Voici une liste des termes utilisés dans le lexique Bouncer.
## Proxy
Un proxy est une entité logique définie par les propriétés suivantes:
- Il possède **un ou plusieurs filtres d'origine** sous la forme de motifs d'URL avec le caractère `*` comme joker. Ces filtres identifient le ou les URLs associées au proxy.
- Il peut avoir **zéro ou une URL cible**, qui servira de base pour la réécriture des requêtes. Si l'URL est absente, on parle alors de "passthrough" (voir note).
- Il peut avoir **zéro ou plusieurs "layers" associés**.
- Il peut être **activé ou désactivé**.
- Il a **un poids qui définit son niveau de priorité** dans la pile de traitement (plus son poids est élevé plus il est prioritaire).
Pour résumer un proxy répond à la question "_Quelle URL orienter vers quel serveur cible ?_".
> **Passthrough**
>
> Un proxy "passthrough" est un proxy n'ayant pas d'URL cible (champ vide). Dans ce cas si les motifs d'URLs correspondent à l'URL de la requête Bouncer appliquera les layers associés puis passera la main aux proxies suivants.
## Layer
Un layer est une entité logique définie par les propriétés suivantes:
- Il a **un type auquel est associé un schéma d'options** permettant de configurer son comportement.
- Il peut être **activé ou désactivé**.
- Il a **un poids qui définit son niveau de priorité** dans la pile de traitement (plus son poids est élevé plus il est prioritaire).
Pour résumer un layer répond à la question "_Quel traitement appliquer à la requête et/ou réponse ?_".

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2
go.mod
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@ -5,7 +5,7 @@ go 1.21
toolchain go1.22.0
require (
forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230701194111-c6b3d482cca6
forge.cadoles.com/Cadoles/go-proxy v0.0.0-20240626132607-e1db6466a926
github.com/Masterminds/sprig/v3 v3.2.3
github.com/bsm/redislock v0.9.4
github.com/btcsuite/btcd/btcutil v1.1.3

4
go.sum
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@ -8,8 +8,8 @@ cloud.google.com/go/logging v1.7.0 h1:CJYxlNNNNAMkHp9em/YEXcfJg+rPDg7YfwoRpMU+t5
cloud.google.com/go/logging v1.7.0/go.mod h1:3xjP2CjkM3ZkO73aj4ASA5wRPGGCRrPIAeNqVNkzY8M=
cloud.google.com/go/longrunning v0.5.1 h1:Fr7TXftcqTudoyRJa113hyaqlGdiBQkp0Gq7tErFDWI=
cloud.google.com/go/longrunning v0.5.1/go.mod h1:spvimkwdz6SPWKEt/XBij79E9fiTkHSQl/fRUUQJYJc=
forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230701194111-c6b3d482cca6 h1:FTk0ZoaV5N8Tkps5Da5RrDMZZXSHZIuD67Hy1Y4fsos=
forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230701194111-c6b3d482cca6/go.mod h1:o8ZK5v/3J1dRmklFVn1l6WHAyQ3LgegyHjRIT8KLAFw=
forge.cadoles.com/Cadoles/go-proxy v0.0.0-20240626132607-e1db6466a926 h1:gSTTuW2lqH66cGVrhplrVrqos62BY1/GxR3KYh2TElk=
forge.cadoles.com/Cadoles/go-proxy v0.0.0-20240626132607-e1db6466a926/go.mod h1:o8ZK5v/3J1dRmklFVn1l6WHAyQ3LgegyHjRIT8KLAFw=
github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8=
github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=

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@ -121,7 +121,7 @@ func (s *Server) deleteProxy(w http.ResponseWriter, r *http.Request) {
type CreateProxyRequest struct {
Name string `json:"name" validate:"required"`
To string `json:"to" validate:"required"`
To string `json:"to"`
From []string `json:"from" validate:"required"`
}

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@ -2,6 +2,7 @@ package layer
import (
"os"
"slices"
"forge.cadoles.com/cadoles/bouncer/internal/client"
"forge.cadoles.com/cadoles/bouncer/internal/command/admin/apierr"
@ -52,14 +53,16 @@ func QueryCommand() *cli.Command {
client := client.New(baseFlags.ServerURL, client.WithToken(token))
proxies, err := client.QueryLayer(ctx.Context, proxyName, options...)
layers, err := client.QueryLayer(ctx.Context, proxyName, options...)
if err != nil {
return errors.WithStack(apierr.Wrap(err))
}
slices.SortFunc(layers, sortLayerssByWeight)
hints := layerHeaderHints(baseFlags.OutputMode)
if err := format.Write(baseFlags.Format, os.Stdout, hints, clientFlag.AsAnySlice(proxies)...); err != nil {
if err := format.Write(baseFlags.Format, os.Stdout, hints, clientFlag.AsAnySlice(layers)...); err != nil {
return errors.WithStack(err)
}
@ -67,3 +70,13 @@ func QueryCommand() *cli.Command {
},
}
}
func sortLayerssByWeight(a *store.LayerHeader, b *store.LayerHeader) int {
if a.Weight < b.Weight {
return 1
}
if a.Weight > b.Weight {
return -1
}
return 0
}

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@ -19,7 +19,7 @@ func CreateCommand() *cli.Command {
Name: "create",
Usage: "Create proxy",
Flags: proxyFlag.WithProxyFlags(
flag.ProxyTo(true),
flag.ProxyTo(),
flag.ProxyFrom(),
),
Action: func(ctx *cli.Context) error {

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@ -30,12 +30,11 @@ func ProxyName() cli.Flag {
const KeyProxyTo = "proxy-to"
func ProxyTo(required bool) cli.Flag {
func ProxyTo() cli.Flag {
return &cli.StringFlag{
Name: KeyProxyTo,
Usage: "Set `PROXY_TO` as proxy's destination url",
Value: "",
Required: required,
Name: KeyProxyTo,
Usage: "Set `PROXY_TO` as proxy's destination url",
Value: "",
}
}

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@ -2,6 +2,7 @@ package proxy
import (
"os"
"slices"
"forge.cadoles.com/cadoles/bouncer/internal/client"
"forge.cadoles.com/cadoles/bouncer/internal/command/admin/apierr"
@ -51,6 +52,8 @@ func QueryCommand() *cli.Command {
return errors.WithStack(apierr.Wrap(err))
}
slices.SortFunc(proxies, sortProxiesByWeight)
hints := proxyHeaderHints(baseFlags.OutputMode)
if err := format.Write(baseFlags.Format, os.Stdout, hints, clientFlag.AsAnySlice(proxies)...); err != nil {
@ -61,3 +64,13 @@ func QueryCommand() *cli.Command {
},
}
}
func sortProxiesByWeight(a *store.ProxyHeader, b *store.ProxyHeader) int {
if a.Weight < b.Weight {
return 1
}
if a.Weight > b.Weight {
return -1
}
return 0
}

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@ -19,7 +19,7 @@ func UpdateCommand() *cli.Command {
Name: "update",
Usage: "Update proxy",
Flags: proxyFlag.WithProxyFlags(
flag.ProxyTo(false),
flag.ProxyTo(),
flag.ProxyFrom(),
flag.ProxyEnabled(),
flag.ProxyWeight(),

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@ -7,22 +7,26 @@ import (
)
type ProxyServerConfig struct {
HTTP HTTPConfig `yaml:"http"`
Metrics MetricsConfig `yaml:"metrics"`
Transport TransportConfig `yaml:"transport"`
Dial DialConfig `yaml:"dial"`
Sentry SentryConfig `yaml:"sentry"`
Cache CacheConfig `yaml:"cache"`
Debug InterpolatedBool `yaml:"debug"`
HTTP HTTPConfig `yaml:"http"`
Metrics MetricsConfig `yaml:"metrics"`
Transport TransportConfig `yaml:"transport"`
Dial DialConfig `yaml:"dial"`
Sentry SentryConfig `yaml:"sentry"`
Cache CacheConfig `yaml:"cache"`
Templates TemplatesConfig `yaml:"templates"`
}
func NewDefaultProxyServerConfig() ProxyServerConfig {
return ProxyServerConfig{
Debug: false,
HTTP: NewHTTPConfig("0.0.0.0", 8080),
Metrics: NewDefaultMetricsConfig(),
Transport: NewDefaultTransportConfig(),
Dial: NewDefaultDialConfig(),
Sentry: NewDefaultSentryConfig(),
Cache: NewDefaultCacheConfig(),
Templates: NewDefaultTemplatesConfig(),
}
}
@ -115,3 +119,13 @@ func NewDefaultCacheConfig() CacheConfig {
TTL: *NewInterpolatedDuration(time.Second * 30),
}
}
type TemplatesConfig struct {
Dir InterpolatedString `yaml:"dir"`
}
func NewDefaultTemplatesConfig() TemplatesConfig {
return TemplatesConfig{
Dir: "./templates",
}
}

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@ -34,19 +34,6 @@ func OriginalURL(ctx context.Context) (*url.URL, error) {
return url, nil
}
func withProxy(ctx context.Context, proxy *store.Proxy) context.Context {
return context.WithValue(ctx, contextKeyProxy, proxy)
}
func ctxProxy(ctx context.Context) (*store.Proxy, error) {
proxy, err := ctxValue[*store.Proxy](ctx, contextKeyProxy)
if err != nil {
return nil, errors.WithStack(err)
}
return proxy, nil
}
func withLayers(ctx context.Context, layers []*store.Layer) context.Context {
return context.WithValue(ctx, contextKeyLayers, layers)
}

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@ -36,15 +36,15 @@ func (d *Director) rewriteRequest(r *http.Request) (*http.Request, error) {
ctx = withOriginalURL(ctx, url)
ctx = logger.With(ctx, logger.F("url", url.String()))
var match *store.Proxy
layers := make([]*store.Layer, 0)
MAIN:
for _, p := range proxies {
for _, from := range p.From {
logger.Debug(
ctx, "matching request with proxy's from",
logger.F("from", from),
)
if matches := wildcard.Match(url.String(), from); !matches {
continue
}
@ -54,44 +54,41 @@ MAIN:
logger.F("from", from),
)
match = p
break MAIN
ctx = logger.With(ctx,
logger.F("proxy", p.Name),
logger.F("host", r.Host),
logger.F("remoteAddr", r.RemoteAddr),
)
metricProxyRequestsTotal.With(prometheus.Labels{metricLabelProxy: string(p.Name)}).Add(1)
proxyLayers, err := d.getLayers(ctx, p.Name)
if err != nil {
return r, errors.WithStack(err)
}
layers = append(layers, proxyLayers...)
if p.To == "" {
continue
}
toURL, err := url.Parse(p.To)
if err != nil {
return r, errors.WithStack(err)
}
r.URL.Host = toURL.Host
r.URL.Scheme = toURL.Scheme
r.URL.Path = toURL.JoinPath(r.URL.Path).Path
ctx = withLayers(ctx, layers)
r = r.WithContext(ctx)
return r, nil
}
}
if match == nil {
return r, nil
}
toURL, err := url.Parse(match.To)
if err != nil {
return r, errors.WithStack(err)
}
r.URL.Host = toURL.Host
r.URL.Scheme = toURL.Scheme
r.URL.Path = toURL.JoinPath(r.URL.Path).Path
ctx = logger.With(ctx,
logger.F("proxy", match.Name),
logger.F("host", r.Host),
logger.F("remoteAddr", r.RemoteAddr),
)
logger.Debug(
ctx, "rewritten url",
logger.F("rewrittenURL", r.URL.String()),
)
metricProxyRequestsTotal.With(prometheus.Labels{metricLabelProxy: string(match.Name)}).Add(1)
ctx = withProxy(ctx, match)
layers, err := d.getLayers(ctx, match.Name)
if err != nil {
return r, errors.WithStack(err)
}
ctx = withLayers(ctx, layers)
r = r.WithContext(ctx)

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@ -3,11 +3,14 @@ package proxy
import (
"context"
"fmt"
"html/template"
"log"
"net"
"net/http"
"net/http/httputil"
"net/url"
"path/filepath"
"strconv"
"time"
"forge.cadoles.com/Cadoles/go-proxy"
@ -17,6 +20,8 @@ import (
"forge.cadoles.com/cadoles/bouncer/internal/config"
"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
"forge.cadoles.com/cadoles/bouncer/internal/store"
"github.com/Masterminds/sprig/v3"
"github.com/getsentry/sentry-go"
sentryhttp "github.com/getsentry/sentry-go/http"
"github.com/go-chi/chi/v5"
@ -152,6 +157,7 @@ func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan e
director.ResponseTransformer(),
),
proxy.WithReverseProxyFactory(s.createReverseProxy),
proxy.WithDefaultHandler(http.HandlerFunc(s.handleDefault)),
)
r.Handle("/*", handler)
@ -180,18 +186,83 @@ func (s *Server) createReverseProxy(ctx context.Context, target *url.URL) *httpu
httpTransport.DialContext = dialer.DialContext
reverseProxy.Transport = httpTransport
reverseProxy.ErrorHandler = s.errorHandler
reverseProxy.ErrorHandler = s.handleError
return reverseProxy
}
func (s *Server) errorHandler(w http.ResponseWriter, r *http.Request, err error) {
func (s *Server) handleDefault(w http.ResponseWriter, r *http.Request) {
err := errors.Errorf("no proxy target found")
logger.Error(r.Context(), "proxy error", logger.E(err))
sentry.CaptureException(err)
s.renderErrorPage(w, r, err, http.StatusBadGateway, http.StatusText(http.StatusBadGateway))
}
func (s *Server) handleError(w http.ResponseWriter, r *http.Request, err error) {
err = errors.WithStack(err)
logger.Error(r.Context(), "proxy error", logger.E(err))
sentry.CaptureException(err)
http.Error(w, http.StatusText(http.StatusBadGateway), http.StatusBadGateway)
s.renderErrorPage(w, r, err, http.StatusBadGateway, http.StatusText(http.StatusBadGateway))
}
func (s *Server) renderErrorPage(w http.ResponseWriter, r *http.Request, err error, statusCode int, status string) {
templateData := struct {
StatusCode int
Status string
Err error
Debug bool
}{
Debug: bool(s.serverConfig.Debug),
StatusCode: statusCode,
Status: status,
Err: err,
}
w.WriteHeader(statusCode)
s.renderPage(w, r, "error", strconv.FormatInt(int64(statusCode), 10), templateData)
}
func (s *Server) renderPage(w http.ResponseWriter, r *http.Request, page string, block string, templateData any) {
ctx := r.Context()
templatesConf := s.serverConfig.Templates
pattern := filepath.Join(string(templatesConf.Dir), page+".gohtml")
logger.Info(ctx, "loading proxy templates", logger.F("pattern", pattern))
tmpl, err := template.New("").Funcs(sprig.FuncMap()).ParseGlob(pattern)
if err != nil {
logger.Error(ctx, "could not load proxy templates", logger.E(errors.WithStack(err)))
http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
return
}
w.Header().Add("Cache-Control", "no-cache")
blockTmpl := tmpl.Lookup(block)
if blockTmpl == nil {
blockTmpl = tmpl.Lookup("default")
}
if blockTmpl == nil {
logger.Error(ctx, "could not find template block nor default one", logger.F("block", block))
http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
return
}
if err := blockTmpl.Execute(w, templateData); err != nil {
logger.Error(ctx, "could not render proxy page", logger.E(errors.WithStack(err)))
http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
return
}
}
func NewServer(funcs ...OptionFunc) *Server {

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@ -1,49 +0,0 @@
FROM golang:1.20 AS BUILD
RUN apt-get update \
&& apt-get install -y make
ARG YQ_VERSION=4.34.1
RUN mkdir -p /usr/local/bin \
&& wget -O /usr/local/bin/yq https://github.com/mikefarah/yq/releases/download/v${YQ_VERSION}/yq_linux_amd64 \
&& chmod +x /usr/local/bin/yq
COPY . /src
WORKDIR /src
RUN make GORELEASER_ARGS='build --rm-dist --single-target --snapshot' goreleaser
# Patch config
RUN /src/dist/bouncer_linux_amd64_v1/bouncer -c '' config dump > /src/dist/bouncer_linux_amd64_v1/config.yml \
&& yq -i '.layers.queue.templateDir = "/usr/share/bouncer/layers/queue/templates"' /src/dist/bouncer_linux_amd64_v1/config.yml \
&& yq -i '.admin.auth.privateKey = "/etc/bouncer/admin-key.json"' /src/dist/bouncer_linux_amd64_v1/config.yml \
&& yq -i '.redis.adresses = ["redis:6379"]' /src/dist/bouncer_linux_amd64_v1/config.yml
FROM alpine:3.18 AS RUNTIME
ARG DUMB_INIT_VERSION=1.2.5
RUN apk add --no-cache ca-certificates
RUN mkdir -p /usr/local/bin \
&& wget -O /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v${DUMB_INIT_VERSION}/dumb-init_${DUMB_INIT_VERSION}_x86_64 \
&& chmod +x /usr/local/bin/dumb-init
ENTRYPOINT ["/usr/local/bin/dumb-init", "--"]
RUN mkdir -p /usr/local/bin /usr/share/bouncer/bin /etc/bouncer
COPY --from=BUILD /src/dist/bouncer_linux_amd64_v1/bouncer /usr/share/bouncer/bin/bouncer
COPY --from=BUILD /src/layers /usr/share/bouncer/layers
COPY --from=BUILD /src/dist/bouncer_linux_amd64_v1/config.yml /etc/bouncer/config.yml
RUN ln -s /usr/share/bouncer/bin/bouncer /usr/local/bin/bouncer
EXPOSE 8080
EXPOSE 8081
ENV BOUNCER_CONFIG=/etc/bouncer/config.yml
CMD ["bouncer"]

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@ -70,6 +70,12 @@ admin:
# Configuration du service "proxy"
proxy:
# Activer/désactiver le mode debug (affichage ou non des messages d'erreur)
debug: false
# Configuration des templates utilisés par le proxy
templates:
# Répertoire contenant les templates
dir: /etc/bouncer/templates
http:
# Hôte d'écoute du service,
# 0.0.0.0 pour écouter sur toutes les interfaces

96
templates/error.gohtml Normal file
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@ -0,0 +1,96 @@
{{ define "default" }}
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
{{ $title := print .StatusCode " - " .Status }}
<title>{{ $title }}</title>
<style>
html {
box-sizing: border-box;
font-size: 16px;
}
*,
*:before,
*:after {
box-sizing: inherit;
}
body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ol,
ul {
margin: 0;
padding: 0;
font-weight: normal;
}
html,
body {
width: 100%;
height: 100%;
font-family: Arial, Helvetica, sans-serif;
background-color: #ffe4e4;
}
#container {
display: flex;
align-items: center;
justify-content: center;
height: 100%;
flex-direction: column;
}
#card {
padding: 1.5em 1em;
border: 1px solid #d90202;
background-color: #feb0b0;
border-radius: 5px;
box-shadow: 2px 2px #cccccc1c;
color: #810000 !important;
}
.title {
margin-bottom: 1.2em;
}
p {
margin-bottom: 0.5em;
}
code,
pre {
font-family: monospace;
}
.footer {
font-size: 0.7em;
margin-top: 2em;
text-align: right;
}
</style>
</head>
<body>
<div id="container">
<div id="card">
<h2 class="title">{{ $title }}</h2>
{{ if .Debug }}
<pre>{{ .Err }}</pre>
{{ end }}
<p class="footer">
Propulsé par
<a href="https://forge.cadoles.com/Cadoles/bouncer">Bouncer</a>.
</p>
</div>
</div>
</body>
</html>
{{ end }}