mirror of https://github.com/astaxie/beego.git
161 lines
4.3 KiB
Go
161 lines
4.3 KiB
Go
// Copyright 2017 The casbin Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"net"
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"regexp"
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"strings"
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"github.com/casbin/casbin/rbac"
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)
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// KeyMatch determines whether key1 matches the pattern of key2 (similar to RESTful path), key2 can contain a *.
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// For example, "/foo/bar" matches "/foo/*"
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func KeyMatch(key1 string, key2 string) bool {
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i := strings.Index(key2, "*")
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if i == -1 {
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return key1 == key2
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}
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if len(key1) > i {
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return key1[:i] == key2[:i]
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}
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return key1 == key2[:i]
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}
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// KeyMatchFunc is the wrapper for KeyMatch.
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func KeyMatchFunc(args ...interface{}) (interface{}, error) {
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name1 := args[0].(string)
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name2 := args[1].(string)
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return bool(KeyMatch(name1, name2)), nil
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}
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// KeyMatch2 determines whether key1 matches the pattern of key2 (similar to RESTful path), key2 can contain a *.
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// For example, "/foo/bar" matches "/foo/*", "/resource1" matches "/:resource"
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func KeyMatch2(key1 string, key2 string) bool {
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key2 = strings.Replace(key2, "/*", "/.*", -1)
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re := regexp.MustCompile(`(.*):[^/]+(.*)`)
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for {
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if !strings.Contains(key2, "/:") {
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break
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}
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key2 = "^" + re.ReplaceAllString(key2, "$1[^/]+$2") + "$"
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}
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return RegexMatch(key1, key2)
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}
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// KeyMatch2Func is the wrapper for KeyMatch2.
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func KeyMatch2Func(args ...interface{}) (interface{}, error) {
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name1 := args[0].(string)
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name2 := args[1].(string)
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return bool(KeyMatch2(name1, name2)), nil
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}
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// KeyMatch3 determines whether key1 matches the pattern of key2 (similar to RESTful path), key2 can contain a *.
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// For example, "/foo/bar" matches "/foo/*", "/resource1" matches "/{resource}"
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func KeyMatch3(key1 string, key2 string) bool {
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key2 = strings.Replace(key2, "/*", "/.*", -1)
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re := regexp.MustCompile(`(.*)\{[^/]+\}(.*)`)
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for {
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if !strings.Contains(key2, "/{") {
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break
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}
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key2 = re.ReplaceAllString(key2, "$1[^/]+$2")
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}
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return RegexMatch(key1, key2)
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}
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// KeyMatch3Func is the wrapper for KeyMatch3.
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func KeyMatch3Func(args ...interface{}) (interface{}, error) {
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name1 := args[0].(string)
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name2 := args[1].(string)
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return bool(KeyMatch3(name1, name2)), nil
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}
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// RegexMatch determines whether key1 matches the pattern of key2 in regular expression.
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func RegexMatch(key1 string, key2 string) bool {
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res, err := regexp.MatchString(key2, key1)
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if err != nil {
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panic(err)
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}
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return res
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}
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// RegexMatchFunc is the wrapper for RegexMatch.
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func RegexMatchFunc(args ...interface{}) (interface{}, error) {
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name1 := args[0].(string)
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name2 := args[1].(string)
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return bool(RegexMatch(name1, name2)), nil
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}
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// IPMatch determines whether IP address ip1 matches the pattern of IP address ip2, ip2 can be an IP address or a CIDR pattern.
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// For example, "192.168.2.123" matches "192.168.2.0/24"
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func IPMatch(ip1 string, ip2 string) bool {
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objIP1 := net.ParseIP(ip1)
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if objIP1 == nil {
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panic("invalid argument: ip1 in IPMatch() function is not an IP address.")
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}
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_, cidr, err := net.ParseCIDR(ip2)
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if err != nil {
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objIP2 := net.ParseIP(ip2)
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if objIP2 == nil {
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panic("invalid argument: ip2 in IPMatch() function is neither an IP address nor a CIDR.")
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}
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return objIP1.Equal(objIP2)
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}
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return cidr.Contains(objIP1)
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}
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// IPMatchFunc is the wrapper for IPMatch.
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func IPMatchFunc(args ...interface{}) (interface{}, error) {
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ip1 := args[0].(string)
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ip2 := args[1].(string)
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return bool(IPMatch(ip1, ip2)), nil
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}
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// GenerateGFunction is the factory method of the g(_, _) function.
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func GenerateGFunction(rm rbac.RoleManager) func(args ...interface{}) (interface{}, error) {
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return func(args ...interface{}) (interface{}, error) {
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name1 := args[0].(string)
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name2 := args[1].(string)
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if rm == nil {
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return name1 == name2, nil
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} else if len(args) == 2 {
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res, _ := rm.HasLink(name1, name2)
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return res, nil
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} else {
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domain := args[2].(string)
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res, _ := rm.HasLink(name1, name2, domain)
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return res, nil
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}
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}
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}
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