mirror of
https://github.com/gravitational/teleport.git
synced 2026-10-31 20:39:37 +08:00
Jeff Pihach
5e68f63dec
* Remove support for DEBUG_ASSETS_PATH now that webapps is in the same repository. * Remove unused DebugEnvVar variable. * Don't return an error when explicitly build without webassets. * Create a simple util to return a http file system for apiserver tests. * revert * Add missing license. * Add comment and remove lint exception. * add in lint exception.
104 lines
2.3 KiB
Go
104 lines
2.3 KiB
Go
/*
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Copyright 2021 Gravitational, Inc.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package web
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import (
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"archive/zip"
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"io"
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"net/http"
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"os"
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"strings"
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"github.com/gravitational/trace"
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)
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// resource struct implements http.File interface on top of zip.File object
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type resource struct {
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reader io.ReadCloser
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file *zip.File
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pos int64
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}
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func (rsc *resource) Read(p []byte) (n int, err error) {
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n, err = rsc.reader.Read(p)
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rsc.pos += int64(n)
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return n, err
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}
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func (rsc *resource) Seek(offset int64, whence int) (int64, error) {
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var (
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pos int64
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err error
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)
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// zip.File does not support seeking. To implement Seek on top of it,
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// we close the existing reader, re-open it, and read 'offset' bytes from
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// the beginning
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if err = rsc.reader.Close(); err != nil {
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return 0, err
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}
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if rsc.reader, err = rsc.file.Open(); err != nil {
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return 0, err
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}
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switch whence {
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case io.SeekStart:
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pos = offset
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case io.SeekCurrent:
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pos = rsc.pos + offset
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case io.SeekEnd:
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pos = int64(rsc.file.UncompressedSize64) + offset
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}
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if pos > 0 {
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b := make([]byte, pos)
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if _, err = rsc.reader.Read(b); err != nil {
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return 0, err
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}
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}
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rsc.pos = pos
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return pos, nil
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}
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func (rsc *resource) Readdir(count int) ([]os.FileInfo, error) {
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return nil, trace.Wrap(os.ErrPermission)
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}
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func (rsc *resource) Stat() (os.FileInfo, error) {
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return rsc.file.FileInfo(), nil
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}
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func (rsc *resource) Close() (err error) {
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log.Debugf("zip::Close(%s).", rsc.file.FileInfo().Name())
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return rsc.reader.Close()
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}
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type ResourceMap map[string]*zip.File
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func (rm ResourceMap) Open(name string) (http.File, error) {
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log.Debugf("GET zip:%s.", name)
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f, ok := rm[strings.Trim(name, "/")]
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if !ok {
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return nil, trace.Wrap(os.ErrNotExist)
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}
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reader, err := f.Open()
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if err != nil {
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return nil, trace.Wrap(err)
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}
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return &resource{
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reader: reader,
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file: f,
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}, nil
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}
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