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mirror of https://github.com/labstack/echo.git synced 2025-01-07 23:01:56 +02:00
echo/middleware/util.go
toimtoimtoim 6ef5f77bf2 WIP: logger examples
WIP: make default logger implemented custom writer for jsonlike logs
WIP: improve examples
WIP: defaultErrorHandler use errors.As to unwrap errors. Update readme
WIP: default logger logs json, restore e.Start method
WIP: clean router.Match a bit
WIP: func types/fields have echo.Context has first element
WIP: remove yaml tags as functions etc can not be serialized anyway
WIP: change BindPathParams,BindQueryParams,BindHeaders from methods to functions and reverse arguments to be like DefaultBinder.Bind is
WIP: improved comments, logger now extracts status from error
WIP: go mod tidy
WIP: rebase with 4.5.0
WIP:
* removed todos.
* removed StartAutoTLS and StartH2CServer methods from `StartConfig`
* KeyAuth middleware errorhandler can swallow the error and resume next middleware
WIP: add RouterConfig.UseEscapedPathForMatching to use escaped path for matching request against routes
WIP: FIXMEs
WIP: upgrade golang-jwt/jwt to `v4`
WIP: refactor http methods to return RouteInfo
WIP: refactor static not creating multiple routes
WIP: refactor route and middleware adding functions not to return error directly
WIP: Use 401 for problematic/missing headers for key auth and JWT middleware (#1552, #1402).
> In summary, a 401 Unauthorized response should be used for missing or bad authentication
WIP: replace `HTTPError.SetInternal` with `HTTPError.WithInternal` so we could not mutate global error variables
WIP: add RouteInfo and RouteMatchType into Context what we could know from in middleware what route was matched and/or type of that match (200/404/405)
WIP: make notFoundHandler and methodNotAllowedHandler private. encourage that all errors be handled in Echo.HTTPErrorHandler
WIP: server cleanup ideas
WIP: routable.ForGroup
WIP: note about logger middleware
WIP: bind should not default values on second try. use crypto rand for better randomness
WIP: router add route as interface and returns info as interface
WIP: improve flaky test (remains still flaky)
WIP: add notes about bind default values
WIP: every route can have their own path params names
WIP: routerCreator and different tests
WIP: different things
WIP: remove route implementation
WIP: support custom method types
WIP: extractor tests
WIP: v5.0.x proposal
over v4.4.0
2021-10-02 18:36:42 +03:00

94 lines
2.1 KiB
Go

package middleware
import (
"crypto/rand"
"fmt"
"strings"
)
const (
_ = int64(1 << (10 * iota)) // ignore first value by assigning to blank identifier
// KB is 1 KiloByte = 1024 bytes
KB
// MB is 1 Megabyte = 1_048_576 bytes
MB
// GB is 1 Gigabyte = 1_073_741_824 bytes
GB
// TB is 1 Terabyte = 1_099_511_627_776 bytes
TB
// PB is 1 Petabyte = 1_125_899_906_842_624 bytes
PB
// EB is 1 Exabyte = 1_152_921_504_606_847_000 bytes
EB
)
func matchScheme(domain, pattern string) bool {
didx := strings.Index(domain, ":")
pidx := strings.Index(pattern, ":")
return didx != -1 && pidx != -1 && domain[:didx] == pattern[:pidx]
}
// matchSubdomain compares authority with wildcard
func matchSubdomain(domain, pattern string) bool {
if !matchScheme(domain, pattern) {
return false
}
didx := strings.Index(domain, "://")
pidx := strings.Index(pattern, "://")
if didx == -1 || pidx == -1 {
return false
}
domAuth := domain[didx+3:]
// to avoid long loop by invalid long domain
if len(domAuth) > 253 {
return false
}
patAuth := pattern[pidx+3:]
domComp := strings.Split(domAuth, ".")
patComp := strings.Split(patAuth, ".")
for i := len(domComp)/2 - 1; i >= 0; i-- {
opp := len(domComp) - 1 - i
domComp[i], domComp[opp] = domComp[opp], domComp[i]
}
for i := len(patComp)/2 - 1; i >= 0; i-- {
opp := len(patComp) - 1 - i
patComp[i], patComp[opp] = patComp[opp], patComp[i]
}
for i, v := range domComp {
if len(patComp) <= i {
return false
}
p := patComp[i]
if p == "*" {
return true
}
if p != v {
return false
}
}
return false
}
func createRandomStringGenerator(length uint8) func() string {
return func() string {
return randomString(length)
}
}
func randomString(length uint8) string {
charset := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
bytes := make([]byte, length)
_, err := rand.Read(bytes)
if err != nil {
// we are out of random. let the request fail
panic(fmt.Errorf("echo randomString failed to read random bytes: %w", err))
}
for i, b := range bytes {
bytes[i] = charset[b%byte(len(charset))]
}
return string(bytes)
}