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redir: loading block arguments before parsing matcher

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fix issue #977

Signed-off-by: Tw <tw19881113@gmail.com>
This commit is contained in:
Tw 2016-08-01 14:38:18 +08:00
parent 7157bdc79d
commit b64894c31e
2 changed files with 83 additions and 85 deletions
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131
caddyhttp/redirect/setup.go
View File

@ -33,15 +33,49 @@ func redirParse(c *caddy.Controller) ([]Rule, error) {
cfg := httpserver.GetConfig(c)
// setRedirCode sets the redirect code for rule if it can, or returns an error
setRedirCode := func(code string, rule *Rule) error {
initRule := func(rule *Rule, defaultCode string, args []string) error {
if cfg.TLS.Enabled {
rule.FromScheme = "https"
} else {
rule.FromScheme = "http"
}
var (
from = "/"
to string
code = defaultCode
)
switch len(args) {
case 1:
// To specified (catch-all redirect)
// Not sure why user is doing this in a table, as it causes all other redirects to be ignored.
// As such, this feature remains undocumented.
to = args[0]
case 2:
// From and To specified
from = args[0]
to = args[1]
case 3:
// From, To, and Code specified
from = args[0]
to = args[1]
code = args[2]
default:
return c.ArgErr()
}
rule.FromPath = from
rule.To = to
if code == "meta" {
rule.Meta = true
} else if codeNumber, ok := httpRedirs[code]; ok {
code = defaultCode
}
if codeNumber, ok := httpRedirs[code]; ok {
rule.Code = codeNumber
} else {
return c.Errf("Invalid redirect code '%v'", code)
}
return nil
}
@ -62,12 +96,14 @@ func redirParse(c *caddy.Controller) ([]Rule, error) {
return nil
}
const initDefaultCode = "301"
for c.Next() {
args := c.RemainingArgs()
matcher, err := httpserver.SetupIfMatcher(c)
if err != nil {
return nil, err
}
args := c.RemainingArgs()
var hadOptionalBlock bool
for c.NextBlock() {
@ -77,103 +113,40 @@ func redirParse(c *caddy.Controller) ([]Rule, error) {
hadOptionalBlock = true
var rule = Rule{
rule := Rule{
RequestMatcher: matcher,
}
if cfg.TLS.Enabled {
rule.FromScheme = "https"
} else {
rule.FromScheme = "http"
}
defaultCode := initDefaultCode
// Set initial redirect code
// BUG: If the code is specified for a whole block and that code is invalid,
// the line number will appear on the first line inside the block, even if that
// line overwrites the block-level code with a valid redirect code. The program
// still functions correctly, but the line number in the error reporting is
// misleading to the user.
if len(args) == 1 {
err := setRedirCode(args[0], &rule)
if err != nil {
return redirects, err
}
} else {
rule.Code = http.StatusMovedPermanently // default code
defaultCode = args[0]
}
// RemainingArgs only gets the values after the current token, but in our
// case we want to include the current token to get an accurate count.
insideArgs := append([]string{c.Val()}, c.RemainingArgs()...)
switch len(insideArgs) {
case 1:
// To specified (catch-all redirect)
// Not sure why user is doing this in a table, as it causes all other redirects to be ignored.
// As such, this feature remains undocumented.
rule.FromPath = "/"
rule.To = insideArgs[0]
case 2:
// From and To specified
rule.FromPath = insideArgs[0]
rule.To = insideArgs[1]
case 3:
// From, To, and Code specified
rule.FromPath = insideArgs[0]
rule.To = insideArgs[1]
err := setRedirCode(insideArgs[2], &rule)
if err != nil {
return redirects, err
}
default:
return redirects, c.ArgErr()
err := initRule(&rule, defaultCode, insideArgs)
if err != nil {
return redirects, err
}
err := checkAndSaveRule(rule)
err = checkAndSaveRule(rule)
if err != nil {
return redirects, err
}
}
if !hadOptionalBlock {
var rule = Rule{
rule := Rule{
RequestMatcher: matcher,
}
if cfg.TLS.Enabled {
rule.FromScheme = "https"
} else {
rule.FromScheme = "http"
err := initRule(&rule, initDefaultCode, args)
if err != nil {
return redirects, err
}
rule.Code = http.StatusMovedPermanently // default
switch len(args) {
case 1:
// To specified (catch-all redirect)
rule.FromPath = "/"
rule.To = args[0]
case 2:
// To and Code specified (catch-all redirect)
rule.FromPath = "/"
rule.To = args[0]
err := setRedirCode(args[1], &rule)
if err != nil {
return redirects, err
}
case 3:
// From, To, and Code specified
rule.FromPath = args[0]
rule.To = args[1]
err := setRedirCode(args[2], &rule)
if err != nil {
return redirects, err
}
default:
return redirects, c.ArgErr()
}
err := checkAndSaveRule(rule)
err = checkAndSaveRule(rule)
if err != nil {
return redirects, err
}

37
caddyhttp/redirect/setup_test.go
View File

@ -1,6 +1,7 @@
package redirect
import (
"fmt"
"testing"
"github.com/mholt/caddy"
@ -15,7 +16,7 @@ func TestSetup(t *testing.T) {
expectedRules []Rule
}{
// test case #0 tests the recognition of a valid HTTP status code defined outside of block statement
{"redir 300 {\n/ /foo\n}", false, []Rule{{FromPath: "/", To: "/foo", Code: 300}}},
{"redir 300 {\n/ /foo\n}", false, []Rule{{FromPath: "/", To: "/foo", Code: 300, RequestMatcher: httpserver.IfMatcher{}}}},
// test case #1 tests the recognition of an invalid HTTP status code defined outside of block statement
{"redir 9000 {\n/ /foo\n}", true, []Rule{{}}},
@ -27,22 +28,43 @@ func TestSetup(t *testing.T) {
{"redir 9000 {\n/ /foo 300\n}", true, []Rule{{}}},
// test case #4 tests the recognition of a TO redirection in a block statement.The HTTP status code is set to the default of 301 - MovedPermanently
{"redir 302 {\n/foo\n}", false, []Rule{{FromPath: "/", To: "/foo", Code: 302}}},
{"redir 302 {\n/foo\n}", false, []Rule{{FromPath: "/", To: "/foo", Code: 302, RequestMatcher: httpserver.IfMatcher{}}}},
// test case #5 tests the recognition of a TO and From redirection in a block statement
{"redir {\n/bar /foo 303\n}", false, []Rule{{FromPath: "/bar", To: "/foo", Code: 303}}},
{"redir {\n/bar /foo 303\n}", false, []Rule{{FromPath: "/bar", To: "/foo", Code: 303, RequestMatcher: httpserver.IfMatcher{}}}},
// test case #6 tests the recognition of a TO redirection in a non-block statement. The HTTP status code is set to the default of 301 - MovedPermanently
{"redir /foo", false, []Rule{{FromPath: "/", To: "/foo", Code: 301}}},
{"redir /foo", false, []Rule{{FromPath: "/", To: "/foo", Code: 301, RequestMatcher: httpserver.IfMatcher{}}}},
// test case #7 tests the recognition of a TO and From redirection in a non-block statement
{"redir /bar /foo 303", false, []Rule{{FromPath: "/bar", To: "/foo", Code: 303}}},
{"redir /bar /foo 303", false, []Rule{{FromPath: "/bar", To: "/foo", Code: 303, RequestMatcher: httpserver.IfMatcher{}}}},
// test case #8 tests the recognition of multiple redirections
{"redir {\n / /foo 304 \n} \n redir {\n /bar /foobar 305 \n}", false, []Rule{{FromPath: "/", To: "/foo", Code: 304}, {FromPath: "/bar", To: "/foobar", Code: 305}}},
{"redir {\n / /foo 304 \n} \n redir {\n /bar /foobar 305 \n}", false,
[]Rule{{FromPath: "/", To: "/foo", Code: 304, RequestMatcher: httpserver.IfMatcher{}},
{FromPath: "/bar", To: "/foobar", Code: 305, RequestMatcher: httpserver.IfMatcher{}}}},
// test case #9 tests the detection of duplicate redirections
{"redir {\n /bar /foo 304 \n} redir {\n /bar /foo 304 \n}", true, []Rule{{}}},
// test case #10 tests the detection of a valid HTTP status code outside of a block statement being overridden by an valid HTTP status code inside statement of a block statement
{"redir 300 {\n/ /foo 301\n}", false, []Rule{{FromPath: "/", To: "/foo", Code: 301, RequestMatcher: httpserver.IfMatcher{}}}},
// test case #11 tests the recognition of a matcher
{"redir {\n if {port} is 80\n/ /foo\n}", false, []Rule{{FromPath: "/", To: "/foo", Code: 301,
RequestMatcher: func() httpserver.IfMatcher {
c := caddy.NewTestController("http", "{\n if {port} is 80\n}")
matcher, _ := httpserver.SetupIfMatcher(c)
return matcher.(httpserver.IfMatcher)
}()}}},
// test case #12 tests the detection of a valid HTTP status code outside of a block statement with a matcher
{"redir 300 {\n if {port} is 80\n/ /foo\n}", false, []Rule{{FromPath: "/", To: "/foo", Code: 300,
RequestMatcher: func() httpserver.IfMatcher {
c := caddy.NewTestController("http", "{\n if {port} is 80\n}")
matcher, _ := httpserver.SetupIfMatcher(c)
return matcher.(httpserver.IfMatcher)
}()}}},
} {
c := caddy.NewTestController("http", test.input)
err := setup(c)
@ -64,6 +86,9 @@ func TestSetup(t *testing.T) {
if recievedRule.Code != test.expectedRules[i].Code {
t.Errorf("Test case #%d.%d expected a HTTP status code of %d, but recieved a code of %d", j, i, test.expectedRules[i].Code, recievedRule.Code)
}
if gotMatcher, expectMatcher := fmt.Sprint(recievedRule.RequestMatcher), fmt.Sprint(test.expectedRules[i].RequestMatcher); gotMatcher != expectMatcher {
t.Errorf("Test case #%d.%d expected a Matcher %s, but recieved a Matcher %s", j, i, expectMatcher, gotMatcher)
}
}
}