111 lines
3.9 KiB
Go
111 lines
3.9 KiB
Go
package tunnel
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import (
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"fmt"
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"net/url"
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"github.com/pkg/errors"
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"github.com/urfave/cli/v2"
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"github.com/cloudflare/cloudflared/cmd/cloudflared/cliutil"
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"github.com/cloudflare/cloudflared/cmd/cloudflared/config"
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"github.com/cloudflare/cloudflared/ingress"
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)
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func buildIngressSubcommand() *cli.Command {
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return &cli.Command{
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Name: "ingress",
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Category: "Tunnel",
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Usage: "Validate and test cloudflared tunnel's ingress configuration",
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UsageText: "cloudflared tunnel [--config FILEPATH] ingress COMMAND [arguments...]",
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Hidden: true,
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Description: ` Cloudflared lets you route traffic from the internet to multiple different addresses on your
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origin. Multiple-origin routing is configured by a set of rules. Each rule matches traffic
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by its hostname or path, and routes it to an address. These rules are configured under the
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'ingress' key of your config.yaml, for example:
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ingress:
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- hostname: www.example.com
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service: https://localhost:8000
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- hostname: *.example.xyz
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path: /[a-zA-Z]+.html
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service: https://localhost:8001
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- hostname: *
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service: https://localhost:8002
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To ensure cloudflared can route all incoming requests, the last rule must be a catch-all
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rule that matches all traffic. You can validate these rules with the 'ingress validate'
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command, and test which rule matches a particular URL with 'ingress rule <URL>'.
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Multiple-origin routing is incompatible with the --url flag.`,
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Subcommands: []*cli.Command{buildValidateIngressCommand(), buildTestURLCommand()},
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}
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}
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func buildValidateIngressCommand() *cli.Command {
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return &cli.Command{
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Name: "validate",
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Action: cliutil.ErrorHandler(validateIngressCommand),
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Usage: "Validate the ingress configuration ",
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UsageText: "cloudflared tunnel [--config FILEPATH] ingress validate",
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Description: "Validates the configuration file, ensuring your ingress rules are OK.",
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}
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}
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func buildTestURLCommand() *cli.Command {
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return &cli.Command{
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Name: "rule",
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Action: cliutil.ErrorHandler(testURLCommand),
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Usage: "Check which ingress rule matches a given request URL",
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UsageText: "cloudflared tunnel [--config FILEPATH] ingress rule URL",
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ArgsUsage: "URL",
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Description: "Check which ingress rule matches a given request URL. " +
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"Ingress rules match a request's hostname and path. Hostname is " +
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"optional and is either a full hostname like `www.example.com` or a " +
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"hostname with a `*` for its subdomains, e.g. `*.example.com`. Path " +
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"is optional and matches a regular expression, like `/[a-zA-Z0-9_]+.html`",
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}
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}
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// validateIngressCommand check the syntax of the ingress rules in the cloudflared config file
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func validateIngressCommand(c *cli.Context) error {
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conf := config.GetConfiguration()
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fmt.Println("Validating rules from", conf.Source())
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if _, err := ingress.ParseIngress(conf); err != nil {
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return errors.Wrap(err, "Validation failed")
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}
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if c.IsSet("url") {
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return ingress.ErrURLIncompatibleWithIngress
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}
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fmt.Println("OK")
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return nil
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}
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// testURLCommand checks which ingress rule matches the given URL.
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func testURLCommand(c *cli.Context) error {
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requestArg := c.Args().First()
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if requestArg == "" {
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return errors.New("cloudflared tunnel rule expects a single argument, the URL to test")
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}
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requestURL, err := url.Parse(requestArg)
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if err != nil {
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return fmt.Errorf("%s is not a valid URL", requestArg)
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}
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if requestURL.Hostname() == "" && requestURL.Scheme == "" {
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return fmt.Errorf("%s doesn't have a hostname, consider adding a scheme", requestArg)
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}
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conf := config.GetConfiguration()
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fmt.Println("Using rules from", conf.Source())
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ing, err := ingress.ParseIngress(conf)
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if err != nil {
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return errors.Wrap(err, "Validation failed")
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}
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_, i := ing.FindMatchingRule(requestURL.Hostname(), requestURL.Path)
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fmt.Printf("Matched rule #%d\n", i+1)
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fmt.Println(ing.Rules[i].MultiLineString())
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return nil
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}
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