mirror of
https://github.com/Luzifer/local-functions.git
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Initial version
Signed-off-by: Knut Ahlers <knut@ahlers.me>
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6 changed files with 158 additions and 0 deletions
1
.gitignore
vendored
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1
.gitignore
vendored
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scripts
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22
LICENSE
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LICENSE
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MIT License
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Copyright (c) [year] [fullname]
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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README.md
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README.md
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[](https://goreportcard.com/report/github.com/Luzifer/local-functions)
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# Luzifer / local-functions
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`local-functions` is intended as the opposite of Cloud-Functions: Run scripts on the local machine through HTTP calls.
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**Be aware:** This will expose scripts in a certain folder on your machine. This might cause trouble for you! So you really should only expose the server on **localhost** and ensure nobody else is able to access the API.
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go.mod
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go.mod
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module github.com/Luzifer/local-functions
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go 1.15
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require (
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github.com/Luzifer/go_helpers/v2 v2.11.0
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github.com/Luzifer/rconfig/v2 v2.2.1
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github.com/gorilla/mux v1.8.0
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github.com/sirupsen/logrus v1.7.0
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)
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go.sum
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go.sum
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github.com/Luzifer/go_helpers v1.4.0 h1:Pmm058SbYewfnpP1CHda/zERoAqYoZFiBHF4l8k03Ko=
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github.com/Luzifer/go_helpers/v2 v2.11.0 h1:IEVuDEAq2st1sjQNaaTX8TxZ2LsXP0qGeqb2uzYZCIo=
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github.com/Luzifer/go_helpers/v2 v2.11.0/go.mod h1:ZnWxPjyCdQ4rZP3kNiMSUW/7FigU1X9Rz8XopdJ5ZCU=
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github.com/Luzifer/rconfig v1.2.0 h1:waD1sqasGVSQSrExpLrQ9Q1JmMaltrS391VdOjWXP/I=
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github.com/Luzifer/rconfig/v2 v2.2.1 h1:zcDdLQlnlzwcBJ8E0WFzOkQE1pCMn3EbX0dFYkeTczg=
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github.com/Luzifer/rconfig/v2 v2.2.1/go.mod h1:OKIX0/JRZrPJ/ZXXWklQEFXA6tBfWaljZbW37w+sqBw=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
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github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
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github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf/go.mod h1:hyb9oH7vZsitZCiBt0ZvifOrB+qc8PS5IiilCIb87rg=
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github.com/leekchan/gtf v0.0.0-20190214083521-5fba33c5b00b/go.mod h1:thNruaSwydMhkQ8dXzapABF9Sc1Tz08ZBcDdgott9RA=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM=
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github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
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github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
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github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
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github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
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golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
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golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19 h1:WB265cn5OpO+hK3pikC9hpP1zI/KTwmyMFKloW9eOVc=
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gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19/go.mod h1:o4V0GXN9/CAmCsvJ0oXYZvrZOe7syiDZSN1GWGZTGzc=
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gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
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gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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90
main.go
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main.go
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package main
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import (
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"bytes"
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"fmt"
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"io"
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"net/http"
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"os"
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"os/exec"
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"path"
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"github.com/gorilla/mux"
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log "github.com/sirupsen/logrus"
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"github.com/Luzifer/go_helpers/v2/env"
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httpHelper "github.com/Luzifer/go_helpers/v2/http"
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"github.com/Luzifer/rconfig/v2"
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)
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var (
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cfg = struct {
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Listen string `flag:"listen" default:"127.0.0.1:3000" description:"Port/IP to listen on"`
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LogLevel string `flag:"log-level" default:"info" description:"Log level (debug, info, warn, error, fatal)"`
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ScriptDir string `flag:"script-dir" default:"./scripts" description:"Directory to execute the script / binary from"`
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VersionAndExit bool `flag:"version" default:"false" description:"Prints current version and exits"`
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}{}
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version = "dev"
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)
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func init() {
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rconfig.AutoEnv(true)
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if err := rconfig.ParseAndValidate(&cfg); err != nil {
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log.Fatalf("Unable to parse commandline options: %s", err)
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}
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if cfg.VersionAndExit {
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fmt.Printf("local-functions %s\n", version)
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os.Exit(0)
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}
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if l, err := log.ParseLevel(cfg.LogLevel); err != nil {
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log.WithError(err).Fatal("Unable to parse log level")
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} else {
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log.SetLevel(l)
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}
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}
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func main() {
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r := mux.NewRouter()
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r.HandleFunc("/{script}", handleScriptCall)
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var h http.Handler = r
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h = httpHelper.NewHTTPLogHandler(h)
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http.ListenAndServe(cfg.Listen, h)
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}
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func handleScriptCall(w http.ResponseWriter, r *http.Request) {
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var (
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vars = mux.Vars(r)
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script = path.Join(cfg.ScriptDir, vars["script"])
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)
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if _, err := os.Stat(script); vars["script"] == "" || os.IsNotExist(err) {
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http.Error(w, "Not found", http.StatusNotFound)
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return
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}
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var (
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stdout = new(bytes.Buffer)
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cmd = exec.Command(script)
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)
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cmd.Stdout = stdout
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cmd.Stderr = os.Stderr
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cmd.Stdin = r.Body
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cmd.Env = env.MapToList(map[string]string{
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"ACCEPT": r.Header.Get("Accept"),
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"CONTENT_TYPE": r.Header.Get("Content-Type"),
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"METHOD": r.Method,
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})
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if err := cmd.Run(); err != nil {
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http.Error(w, "Script execution failed, see log", http.StatusInternalServerError)
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return
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}
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io.Copy(w, stdout)
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}
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