This commit is contained in:
“xHuPo” 2024-12-13 18:39:43 +08:00
parent 9d86fd33c6
commit da94a4b7b0
7 changed files with 133 additions and 246 deletions

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@ -1,246 +0,0 @@
package pages
import (
"fmt"
"github.com/alecthomas/units"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
"github.com/caddyserver/caddy/v2/modules/caddyhttp"
"github.com/d7z-project/caddy-gitea-pages/pages"
"github.com/pkg/errors"
"go.uber.org/zap"
"io"
"net/http"
"os"
"strconv"
"strings"
"time"
)
func init() {
middle := &Middleware{
Config: &pages.MiddlewareConfig{},
}
caddy.RegisterModule(middle)
httpcaddyfile.RegisterHandlerDirective("gitea", parseCaddyfile(middle))
}
func (m *Middleware) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
for n := d.Nesting(); d.NextBlock(n); {
switch d.Val() {
case "server":
d.Args(&m.Config.Server)
case "token":
d.Args(&m.Config.Token)
case "cache":
remainingArgs := d.RemainingArgs()
if len(remainingArgs) != 3 {
return d.Errf("expected 3 argument for 'cache'; got %v", remainingArgs)
}
var err error
m.Config.CacheTimeout, err = time.ParseDuration(remainingArgs[0])
if err != nil {
return d.Errf("invalid duration: %v", err)
}
m.Config.CacheRefresh, err = time.ParseDuration(remainingArgs[1])
if err != nil {
return d.Errf("invalid duration: %v", err)
}
size, err := units.ParseBase2Bytes(remainingArgs[2])
if err != nil {
return d.Errf("invalid CacheSize: %v", err)
}
m.Config.CacheMaxSize = int(size)
case "domain":
d.Args(&m.Config.Domain)
case "alias":
remainingArgs := d.RemainingArgs()
if len(remainingArgs) == 0 {
return d.Errf("expected 2 argument for 'alias'; got %v", remainingArgs)
}
if len(remainingArgs) == 1 {
m.Config.Alias = remainingArgs[0]
}
if len(remainingArgs) == 2 && remainingArgs[1] == "shared" {
m.Config.Alias = remainingArgs[0]
m.Config.SharedAlias = true
}
case "headers":
if d.NextArg() {
return d.ArgErr()
}
for nesting := d.Nesting(); d.NextBlock(nesting); {
args := []string{d.Val()}
args = append(args, d.RemainingArgs()...)
if len(args) != 2 {
return d.Errf("expected 2 arguments, got %d", len(args))
}
if m.Config.CustomHeaders == nil {
m.Config.CustomHeaders = make(map[string]string)
}
m.Config.CustomHeaders[args[0]] = args[1]
}
case "errors":
if d.NextArg() {
return d.ArgErr()
}
for nesting := d.Nesting(); d.NextBlock(nesting); {
args := []string{d.Val()}
args = append(args, d.RemainingArgs()...)
if len(args) != 2 {
return d.Errf("expected 2 arguments, got %d", len(args))
}
body, err := parseBody(args[1])
if err != nil {
return d.Errf("failed to parse %s: %v", args[0], err)
}
if m.Config.ErrorPages == nil {
m.Config.ErrorPages = make(map[string]string)
}
m.Config.ErrorPages[strings.ToLower(args[0])] = body
}
case "redirect":
remainingArgs := d.RemainingArgs()
if len(remainingArgs) != 2 {
return d.Errf("expected 2 arguments, got %d", len(remainingArgs))
}
code, err := strconv.Atoi(remainingArgs[1])
if err != nil {
return d.WrapErr(err)
}
m.Config.AutoRedirect = &pages.AutoRedirect{
Enabled: true,
Scheme: remainingArgs[0],
Code: code,
}
default:
return d.Errf("unrecognized subdirective '%s'", d.Val())
}
}
}
return nil
}
func parseBody(path string) (string, error) {
fileData, err := os.ReadFile(path)
if err == nil {
return string(fileData), nil
} else if strings.HasPrefix(path, "http://") ||
strings.HasPrefix(path, "https://") {
resp, err := http.Get(path)
if err != nil {
return "", err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return "", errors.New(resp.Status)
}
all, err := io.ReadAll(resp.Body)
if err != nil {
return "", err
}
return string(all), nil
}
return "", err
}
func parseCaddyfile(middleware *Middleware) func(httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
return func(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
err := middleware.UnmarshalCaddyfile(h.Dispenser)
if err != nil {
return nil, err
}
if middleware.Config.ErrorPages == nil {
middleware.Config.ErrorPages = make(map[string]string)
}
if middleware.Config.CustomHeaders == nil {
middleware.Config.CustomHeaders = make(map[string]string)
}
if middleware.Config.AutoRedirect == nil {
middleware.Config.AutoRedirect = &pages.AutoRedirect{
Enabled: false,
}
}
if middleware.Config.CacheRefresh <= 0 {
middleware.Config.CacheRefresh = 1 * time.Minute
}
if middleware.Config.CacheTimeout <= 0 {
middleware.Config.CacheTimeout = 3 * time.Minute
}
if middleware.Config.CacheMaxSize <= 0 {
middleware.Config.CacheMaxSize = 3 * 1024 * 1024
}
return middleware, nil
}
}
type Middleware struct {
Config *pages.MiddlewareConfig `json:"config"`
Logger *zap.Logger `json:"-"`
Client *pages.PageClient `json:"-"`
}
func (m *Middleware) ServeHTTP(
writer http.ResponseWriter,
request *http.Request,
handler caddyhttp.Handler,
) error {
type stackTracer interface {
StackTrace() errors.StackTrace
}
err := m.Client.Route(writer, request)
if errors.Is(err, pages.ErrorNotMatches) {
return handler.ServeHTTP(writer, request)
} else {
if err != nil {
if err, ok := err.(stackTracer); ok {
for _, f := range err.StackTrace() {
fmt.Printf("%+s:%d\n", f, f)
}
}
}
return err
}
}
func (m *Middleware) CaddyModule() caddy.ModuleInfo {
return caddy.ModuleInfo{
ID: "http.handlers.gitea",
New: func() caddy.Module {
return new(Middleware)
},
}
}
func (m *Middleware) Validate() error {
return m.Client.Validate()
}
func (m *Middleware) Cleanup() error {
m.Logger.Info("cleaning up gitea middleware.")
return m.Client.Close()
}
func (m *Middleware) Provision(ctx caddy.Context) error {
var err error
m.Logger = ctx.Logger() // g.Logger is a *zap.Logger
m.Client, err = pages.NewPageClient(
m.Config,
m.Logger,
)
if err != nil {
return err
}
return nil
}
var (
_ caddy.Provisioner = (*Middleware)(nil)
_ caddy.CleanerUpper = (*Middleware)(nil)
_ caddy.Validator = (*Middleware)(nil)
_ caddyhttp.MiddlewareHandler = (*Middleware)(nil)
_ caddyfile.Unmarshaler = (*Middleware)(nil)
)

1
main.go Normal file
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package main

79
pages/config.go Normal file
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package pages
import (
"flag"
"fmt"
"os"
"gopkg.in/yaml.v3"
)
type Config struct {
GiteaServer string `yaml:"server" json:"server"`
GiteaToken string `yaml:"token" json:"token"`
GiteaBranch string `yaml:"branch" json:"branch"`
PageBaseDomain string `yaml:"domain" json:"domain"`
ConfigPath string `yaml:"config" json:"config"`
}
var DefauleConfig = Config{
GiteaServer: DefaultGiteaServer,
GiteaToken: DefaultGiteaToken,
GiteaBranch: DefaultGiteaBranch,
PageBaseDomain: DefaultPageBaseDomain,
ConfigPath: DefauleConfigPath,
}
func ParseEnvs() *Config {
config := &Config{}
config.GiteaServer = GetEnvStr(ENV_PAGE_GiteaServer, DefaultGiteaServer)
config.GiteaToken = GetEnvStr(ENV_PAGE_GiteaToken, DefaultGiteaToken)
config.GiteaBranch = GetEnvStr(ENV_PAGE_GiteaBranch, DefaultGiteaBranch)
config.PageBaseDomain = GetEnvStr(ENV_PAGE_PageBaseDomain, DefaultPageBaseDomain)
config.ConfigPath = GetEnvStr(ENV_PAGE_ConfigPath, DefauleConfigPath)
return config
}
func ParseFile(config *Config) error {
c, err := os.ReadFile(config.ConfigPath)
if err != nil {
return err
}
return yaml.Unmarshal(c, &config)
}
func mergeConfig(cli, file, envs, defaultKey Config) Config {
config := defaultKey
config.GiteaServer = GetStr(cli.GiteaServer, file.GiteaServer, envs.GiteaServer, defaultKey.GiteaServer)
config.GiteaToken = GetStr(cli.GiteaToken, file.GiteaToken, envs.GiteaToken, defaultKey.GiteaToken)
config.GiteaBranch = GetStr(cli.GiteaBranch, file.GiteaBranch, envs.GiteaBranch, defaultKey.GiteaBranch)
config.PageBaseDomain = GetStr(cli.PageBaseDomain, file.PageBaseDomain, envs.PageBaseDomain, defaultKey.PageBaseDomain)
config.ConfigPath = GetStr(cli.ConfigPath, file.ConfigPath, envs.ConfigPath, defaultKey.ConfigPath)
return config
}
func ParseCli(config *Config) {
flag.StringVar(&config.GiteaServer, "server", config.GiteaServer, "gitea server")
flag.StringVar(&config.GiteaToken, "token", config.GiteaToken, "gitea token")
flag.StringVar(&config.GiteaBranch, "branch", config.GiteaBranch, "gitea branch")
flag.StringVar(&config.PageBaseDomain, "domain", config.PageBaseDomain, "page base domain")
flag.StringVar(&config.ConfigPath, "config", config.ConfigPath, "config path")
flag.Parse()
}
func Parse() Config {
var config Config = DefauleConfig
envs := ParseEnvs()
err := ParseFile(&config)
if err != nil {
fmt.Printf("Faild to parse config file: %v\n", err)
}
cli := Config{}
ParseCli(&cli)
return mergeConfig(cli, config, *envs, DefauleConfig)
}

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pages/config.yaml Normal file
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gitea:
server: "https://gitea.com"
token: "1234"
branch: "public"
page:
domain: "example.com"

19
pages/const.go Normal file
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package pages
const (
DefaultGiteaServer = "https://gitea.com"
DefaultGiteaToken = ""
DefaultGiteaBranch = "public"
DefaultPageBaseDomain = "example.com"
DefauleConfigPath = "./config.yaml"
ENV_PAGE_GiteaServer = "GiteaServer"
ENV_PAGE_GiteaToken = "GiteaToken"
ENV_PAGE_GiteaBranch = "GiteaBranch"
ENV_PAGE_PageBaseDomain = "PageBaseDomain"
ENV_PAGE_ConfigPath = "PageConfigPath"
)

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pages/env.go Normal file
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package pages

25
pages/utils.go Normal file
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package pages
import (
"os"
"strings"
)
func GetStr(key ...string) string {
for _, k := range key {
value := strings.TrimSpace(k)
if value != "" {
return value
}
}
return ""
}
func GetEnvStr(key, defaultKey string) string {
v, ok := os.LookupEnv(key)
if !ok {
return defaultKey
}
value := strings.TrimSpace(v)
return value
}