thomas.bellembois
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codefirst-menuwrapper
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Thomas BELLEMBOIS 2 years ago
parent 3546c6f674
commit 37fe025cec
8 changed files with 383 additions and 0 deletions
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23
.gitignore vendored
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# ---> Go
# If you prefer the allow list template instead of the deny list, see community template:
# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
#
# Binaries for programs and plugins
*.exe
*.exe~
*.dll
*.so
*.dylib
# Test binary, built with `go test -c`
*.test
# Output of the go coverage tool, specifically when used with LiteIDE
*.out
# Dependency directories (remove the comment below to include it)
# vendor/
# Go workspace file
go.work

102
.golangci.yml
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# options for analysis running
run:
# timeout for analysis, e.g. 30s, 5m, default is 1m
timeout: 1m
# exit code when at least one issue was found, default is 1
issues-exit-code: 0
# include test files or not, default is true
tests: false
# which dirs to skip: issues from them won't be reported;
# can use regexp here: generated.*, regexp is applied on full path;
# default value is empty list, but default dirs are skipped independently
# from this option's value (see skip-dirs-use-default).
# "/" will be replaced by current OS file path separator to properly work
# on Windows.
skip-dirs:
- wasm
- static
- node_modules
- documents
- docker
- bind-*
# default is true. Enables skipping of directories:
# vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
skip-dirs-use-default: true
# by default isn't set. If set we pass it to "go list -mod={option}". From "go help modules":
# If invoked with -mod=readonly, the go command is disallowed from the implicit
# automatic updating of go.mod described above. Instead, it fails when any changes
# to go.mod are needed. This setting is most useful to check that go.mod does
# not need updates, such as in a continuous integration and testing system.
# If invoked with -mod=vendor, the go command assumes that the vendor
# directory holds the correct copies of dependencies and ignores
# the dependency descriptions in go.mod.
modules-download-mode: mod
# Allow multiple parallel golangci-lint instances running.
# If false (default) - golangci-lint acquires file lock on start.
allow-parallel-runners: true
# output configuration options
output:
# colored-line-number|line-number|json|tab|checkstyle|code-climate|junit-xml|github-actions
# default is "colored-line-number"
format: colored-line-number
# print lines of code with issue, default is true
print-issued-lines: true
# print linter name in the end of issue text, default is true
print-linter-name: true
# make issues output unique by line, default is true
uniq-by-line: true
# add a prefix to the output file references; default is no prefix
path-prefix: ""
# sorts results by: filepath, line and column
sort-results: false
# all available settings of specific linters
linters-settings:
gofmt:
# simplify code: gofmt with `-s` option, true by default
simplify: true
staticcheck:
# Select the Go version to target. The default is '1.13'.
go: "1.16"
# https://staticcheck.io/docs/options#checks
checks: ["all"]
stylecheck:
# Select the Go version to target. The default is '1.13'.
go: "1.18"
# https://staticcheck.io/docs/options#checks
checks: ["all"]
errcheck:
# report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
# default is false: such cases aren't reported by default.
check-blank: true
linters:
enable:
# go install github.com/kisielk/errcheck@latest
# go install github.com/gordonklaus/ineffassign@latest
# go install honnef.co/go/tools/cmd/staticcheck@latest
# go install gitlab.com/opennota/check/cmd/varcheck@latest
# go install github.com/go-critic/go-critic/cmd/gocritic@latest
- errcheck
- staticcheck
- stylecheck
- ineffassign
- varcheck
- gofmt
- gocritic
- wsl
fast: false

18
Dockerfile
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FROM golang:1.18-bullseye
LABEL author="Thomas Bellembois"
# Copying sources.
WORKDIR /go/src/github.com/tbellembois/codefirst-menuwrapper/
COPY . .
# Installing.
RUN go install -v ./...
RUN chmod +x /go/bin/codefirst-menuwrapper
# Copying entrypoint.
COPY entrypoint.sh /
RUN chmod +x /entrypoint.sh
USER www-data
EXPOSE 8081
CMD ["/entrypoint.sh"]

2
README.md
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# codefirst-menuwrapper

10
entrypoint.sh
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#!/usr/bin/env bash
debug=""
if [ ! -z "$DEBUG" ]
then
debug="-debug"
fi
/go/bin/codefirst-menuwrapper -proxyurl=$PROXYURL -codefirsturl=$CODEFIRSTURL $debug

10
go.mod
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module codefirst.iut.uca.fr/git/thomas.bellembois/codefirst-menuwrapper
go 1.19
require (
codefirst.iut.uca.fr/git/thomas.bellembois/codefirst-menu/v2 v2.0.0-20220901141305-9da5f43fc873
github.com/sirupsen/logrus v1.9.0
)
require golang.org/x/sys v0.0.0-20220829200755-d48e67d00261 // indirect

14
go.sum
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codefirst.iut.uca.fr/git/thomas.bellembois/codefirst-menu/v2 v2.0.0-20220901141305-9da5f43fc873 h1:GYYkgzYWIYV5qLSVguwerESYAfFSESlsJAV3drN1mno=
codefirst.iut.uca.fr/git/thomas.bellembois/codefirst-menu/v2 v2.0.0-20220901141305-9da5f43fc873/go.mod h1:hQ1fdhe5i32sO3pl+kic2sPFTA1uw3X3U82aDV77LoU=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220829200755-d48e67d00261 h1:v6hYoSR9T5oet+pMXwUWkbiVqx/63mlHjefrHmxwfeY=
golang.org/x/sys v0.0.0-20220829200755-d48e67d00261/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

204
main.go
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package main
import (
"bytes"
"compress/gzip"
"errors"
"flag"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/http/httputil"
"net/url"
"os"
"strings"
"codefirst.iut.uca.fr/git/thomas.bellembois/codefirst-menu/v2/menu"
log "github.com/sirupsen/logrus"
)
var (
updatedMenu, updatedStringbody string
proxyURL, codefirstURL string
debug, dump bool
)
func gUnzipData(data []byte) (resData []byte, err error) {
b := bytes.NewBuffer(data)
var r io.Reader
r, err = gzip.NewReader(b)
if err != nil {
return
}
var resB bytes.Buffer
_, err = resB.ReadFrom(r)
if err != nil {
return
}
resData = resB.Bytes()
return
}
func UpdateResponse(r *http.Response) error {
contentType := r.Header[http.CanonicalHeaderKey("content-type")]
contentEncoding := r.Header[http.CanonicalHeaderKey("content-encoding")]
location := r.Header[http.CanonicalHeaderKey("location")]
statusCode := r.StatusCode
log.WithFields(
log.Fields{
"r.Header": r.Header,
"statusCode": statusCode,
"contentType": contentType,
"contentEncoding": contentEncoding,
"location": location,
},
).Debug()
if statusCode == http.StatusFound && strings.HasPrefix(proxyURL, "http://pastebin") && len(contentType) == 0 {
if len(location) > 0 {
r.Header.Del("location")
r.Header.Set("location", fmt.Sprintf("/pastebin%s", location[0]))
}
}
if statusCode != http.StatusOK {
log.Debug("skipping not status ok reponse")
return nil
}
if len(contentType) > 0 && strings.HasPrefix(contentType[0], "text/html") {
var (
body []byte
err error
)
if body, err = io.ReadAll(r.Body); err != nil {
fmt.Println(err)
return err
}
if len(contentEncoding) > 0 && strings.HasPrefix(contentEncoding[0], "gzip") {
if body, err = gUnzipData(body); err != nil {
fmt.Println(err)
return err
}
}
stringBody := string(body)
if strings.HasPrefix(proxyURL, "http://pastebin") {
updatedStringbody = strings.Replace(stringBody, "action=\"/\"", "action=\"/pastebin/\"", 1)
} else if strings.HasPrefix(proxyURL, "http://cinny") {
updatedStringbody = strings.Replace(stringBody, `<body id="appBody">`, `<body id="appBody">`+updatedMenu, 1)
} else {
updatedStringbody = strings.Replace(stringBody, "<body>", "<body>"+updatedMenu, 1)
}
buf := bytes.NewBufferString(updatedStringbody)
r.Body = ioutil.NopCloser(buf)
r.Header.Del("content-encoding")
r.Header.Del("content-type")
r.Header.Set("content-type", "text/html; charset=utf-8")
r.Header.Set("content-length", fmt.Sprint(buf.Len()))
}
return nil
}
func init() {
flag.StringVar(&proxyURL, "proxyurl", "", "proxy URL")
flag.StringVar(&codefirstURL, "codefirsturl", "", "codefirst URL")
flag.BoolVar(&debug, "debug", false, "enable debug")
flag.BoolVar(&dump, "dump", false, "dump menu")
flag.Parse()
updatedMenu = menu.CodeFirstMenu
if dump {
updatedMenu = strings.Replace(updatedMenu, "<!--gitea", "", 1)
updatedMenu = strings.Replace(updatedMenu, "gitea-->", "", 1)
fmt.Println(updatedMenu)
os.Exit(0)
}
if proxyURL == "" {
panic(errors.New("empty proxy URL"))
}
if debug {
log.SetLevel(log.DebugLevel)
}
updatedMenu = strings.ReplaceAll(updatedMenu, "CODEFIRST_HOSTNAME", codefirstURL)
if strings.HasPrefix(proxyURL, "http://gitea") {
updatedMenu = strings.Replace(updatedMenu, "<!--gitea", "", 1)
updatedMenu = strings.Replace(updatedMenu, "gitea-->", "", 1)
} else if strings.HasPrefix(proxyURL, "http://drone") {
updatedMenu = strings.Replace(updatedMenu, "<!--drone", "", 1)
updatedMenu = strings.Replace(updatedMenu, "drone-->", "", 1)
} else if strings.HasPrefix(proxyURL, "http://dockerrunner") {
updatedMenu = strings.Replace(updatedMenu, "<!--dockerrunner", "", 1)
updatedMenu = strings.Replace(updatedMenu, "dockerrunner-->", "", 1)
} else if strings.HasPrefix(proxyURL, "http://registryui") {
updatedMenu = strings.Replace(updatedMenu, "<!--dockerregistry", "", 1)
updatedMenu = strings.Replace(updatedMenu, "dockerregistry-->", "", 1)
} else if strings.HasPrefix(proxyURL, "http://sonarqube") {
updatedMenu = strings.Replace(updatedMenu, "<!--sonar", "", 1)
updatedMenu = strings.Replace(updatedMenu, "sonar-->", "", 1)
} else if strings.HasPrefix(proxyURL, "http://nginx") {
updatedMenu = strings.Replace(updatedMenu, "<!--documentation", "", 1)
updatedMenu = strings.Replace(updatedMenu, "documentation-->", "", 1)
} else if strings.HasPrefix(proxyURL, "http://cinny") {
updatedMenu = strings.Replace(updatedMenu, "<!--cinny", "", 1)
updatedMenu = strings.Replace(updatedMenu, "cinny-->", "", 1)
}
}
func main() {
remote, err := url.Parse(proxyURL)
if err != nil {
panic(err)
}
log.WithFields(
log.Fields{
"proxyURL": proxyURL,
"updatedMenu": updatedMenu,
},
).Debug()
handler := func(p *httputil.ReverseProxy) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
log.WithFields(
log.Fields{
"r.Host": r.Host,
"r.RequestURI": r.RequestURI,
},
).Debug()
r.Host = remote.Host
p.ServeHTTP(w, r)
}
}
proxy := httputil.NewSingleHostReverseProxy(remote)
proxy.ModifyResponse = UpdateResponse
http.HandleFunc("/", handler(proxy))
err = http.ListenAndServe(":8081", nil)
if err != nil {
panic(err)
}
}
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