134 lines
6.8 KiB
Go
134 lines
6.8 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"runtime"
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"strings"
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"time"
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"github.com/BurntSushi/toml"
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"github.com/mreiferson/go-options"
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)
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func main() {
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log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile)
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flagSet := flag.NewFlagSet("oauth2_proxy", flag.ExitOnError)
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emailDomains := StringArray{}
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upstreams := StringArray{}
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skipAuthRegex := StringArray{}
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googleGroups := StringArray{}
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config := flagSet.String("config", "", "path to config file")
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showVersion := flagSet.Bool("version", false, "print version string")
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flagSet.String("http-address", "127.0.0.1:4180", "[http://]<addr>:<port> or unix://<path> to listen on for HTTP clients")
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flagSet.String("https-address", ":443", "<addr>:<port> to listen on for HTTPS clients")
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flagSet.String("tls-cert", "", "path to certificate file")
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flagSet.String("tls-key", "", "path to private key file")
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flagSet.String("redirect-url", "", "the OAuth Redirect URL. ie: \"https://internalapp.yourcompany.com/oauth2/callback\"")
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flagSet.Bool("set-xauthrequest", false, "set X-Auth-Request-User and X-Auth-Request-Email response headers (useful in Nginx auth_request mode)")
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flagSet.Var(&upstreams, "upstream", "the http url(s) of the upstream endpoint or file:// paths for static files. Routing is based on the path")
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flagSet.Bool("pass-basic-auth", true, "pass HTTP Basic Auth, X-Forwarded-User and X-Forwarded-Email information to upstream")
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flagSet.Bool("pass-user-headers", true, "pass X-Forwarded-User and X-Forwarded-Email information to upstream")
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flagSet.String("basic-auth-password", "", "the password to set when passing the HTTP Basic Auth header")
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flagSet.Bool("pass-access-token", false, "pass OAuth access_token to upstream via X-Forwarded-Access-Token header")
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flagSet.Bool("pass-host-header", true, "pass the request Host Header to upstream")
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flagSet.Var(&skipAuthRegex, "skip-auth-regex", "bypass authentication for requests path's that match (may be given multiple times)")
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flagSet.Bool("skip-provider-button", false, "will skip sign-in-page to directly reach the next step: oauth/start")
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flagSet.Bool("skip-auth-preflight", false, "will skip authentication for OPTIONS requests")
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flagSet.Bool("ssl-insecure-skip-verify", false, "skip validation of certificates presented when using HTTPS")
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flagSet.Var(&emailDomains, "email-domain", "authenticate emails with the specified domain (may be given multiple times). Use * to authenticate any email")
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flagSet.String("azure-tenant", "common", "go to a tenant-specific or common (tenant-independent) endpoint.")
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flagSet.String("github-org", "", "restrict logins to members of this organisation")
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flagSet.String("github-team", "", "restrict logins to members of this team")
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flagSet.Var(&googleGroups, "google-group", "restrict logins to members of this google group (may be given multiple times).")
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flagSet.String("google-admin-email", "", "the google admin to impersonate for api calls")
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flagSet.String("google-service-account-json", "", "the path to the service account json credentials")
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flagSet.String("client-id", "", "the OAuth Client ID: ie: \"123456.apps.googleusercontent.com\"")
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flagSet.String("client-secret", "", "the OAuth Client Secret")
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flagSet.String("authenticated-emails-file", "", "authenticate against emails via file (one per line)")
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flagSet.String("htpasswd-file", "", "additionally authenticate against a htpasswd file. Entries must be created with \"htpasswd -s\" for SHA encryption or \"htpasswd -B\" for bcrypt encryption")
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flagSet.Bool("display-htpasswd-form", true, "display username / password login form if an htpasswd file is provided")
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flagSet.String("custom-templates-dir", "", "path to custom html templates")
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flagSet.String("footer", "", "custom footer string. Use \"-\" to disable default footer.")
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flagSet.String("proxy-prefix", "/oauth2", "the url root path that this proxy should be nested under (e.g. /<oauth2>/sign_in)")
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flagSet.String("cookie-name", "_oauth2_proxy", "the name of the cookie that the oauth_proxy creates")
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flagSet.String("cookie-secret", "", "the seed string for secure cookies (optionally base64 encoded)")
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flagSet.String("cookie-domain", "", "an optional cookie domain to force cookies to (ie: .yourcompany.com)*")
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flagSet.Duration("cookie-expire", time.Duration(168)*time.Hour, "expire timeframe for cookie")
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flagSet.Duration("cookie-refresh", time.Duration(0), "refresh the cookie after this duration; 0 to disable")
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flagSet.Bool("cookie-secure", true, "set secure (HTTPS) cookie flag")
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flagSet.Bool("cookie-httponly", true, "set HttpOnly cookie flag")
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flagSet.Bool("request-logging", true, "Log requests to stdout")
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flagSet.String("request-logging-format", defaultRequestLoggingFormat, "Template for log lines")
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flagSet.String("provider", "google", "OAuth provider")
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flagSet.String("oidc-issuer-url", "", "OpenID Connect issuer URL (ie: https://accounts.google.com)")
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flagSet.String("login-url", "", "Authentication endpoint")
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flagSet.String("redeem-url", "", "Token redemption endpoint")
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flagSet.String("profile-url", "", "Profile access endpoint")
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flagSet.String("resource", "", "The resource that is protected (Azure AD only)")
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flagSet.String("validate-url", "", "Access token validation endpoint")
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flagSet.String("scope", "", "OAuth scope specification")
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flagSet.String("approval-prompt", "force", "OAuth approval_prompt")
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flagSet.String("signature-key", "", "GAP-Signature request signature key (algorithm:secretkey)")
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flagSet.Parse(os.Args[1:])
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if *showVersion {
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fmt.Printf("oauth2_proxy %s (built with %s)\n", VERSION, runtime.Version())
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return
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}
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opts := NewOptions()
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cfg := make(EnvOptions)
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if *config != "" {
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_, err := toml.DecodeFile(*config, &cfg)
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if err != nil {
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log.Fatalf("ERROR: failed to load config file %s - %s", *config, err)
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}
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}
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cfg.LoadEnvForStruct(opts)
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options.Resolve(opts, flagSet, cfg)
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err := opts.Validate()
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if err != nil {
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log.Printf("%s", err)
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os.Exit(1)
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}
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validator := NewValidator(opts.EmailDomains, opts.AuthenticatedEmailsFile)
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oauthproxy := NewOAuthProxy(opts, validator)
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if len(opts.EmailDomains) != 0 && opts.AuthenticatedEmailsFile == "" {
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if len(opts.EmailDomains) > 1 {
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oauthproxy.SignInMessage = fmt.Sprintf("Authenticate using one of the following domains: %v", strings.Join(opts.EmailDomains, ", "))
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} else if opts.EmailDomains[0] != "*" {
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oauthproxy.SignInMessage = fmt.Sprintf("Authenticate using %v", opts.EmailDomains[0])
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}
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}
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if opts.HtpasswdFile != "" {
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log.Printf("using htpasswd file %s", opts.HtpasswdFile)
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oauthproxy.HtpasswdFile, err = NewHtpasswdFromFile(opts.HtpasswdFile)
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oauthproxy.DisplayHtpasswdForm = opts.DisplayHtpasswdForm
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if err != nil {
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log.Fatalf("FATAL: unable to open %s %s", opts.HtpasswdFile, err)
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}
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}
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s := &Server{
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Handler: LoggingHandler(os.Stdout, oauthproxy, opts.RequestLogging, opts.RequestLoggingFormat),
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Opts: opts,
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}
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s.ListenAndServe()
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}
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