commit d3f4d8135cac223ac7be8ce69da267ce4c933a5d Author: Darko Luketic Date: Tue Oct 29 21:37:31 2019 +0100 initial diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..69ef9ce --- /dev/null +++ b/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright 2019 Darko Luketic + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/README.md b/README.md new file mode 100644 index 0000000..9b4891c --- /dev/null +++ b/README.md @@ -0,0 +1,42 @@ +# chromedom + +a simple proxy for rendering SPA + +WIP + +### configure nginx + +see also https://gist.github.com/thoop/8165802 + +``` + location / { + try_files $uri @prerender; + } + + location @prerender { + proxy_set_header Host $host; + set $prerender 0; + if ($http_user_agent ~* "googlebot|bingbot|yandex|baiduspider|twitterbot|facebookexternalhit|rogerbot|linkedinbot|embedly|quora link preview|showyoubot|outbrain|pinterest\/0\.|pinterestbot|slackbot|vkShare|W3C_Validator|whatsapp|$ + set $prerender 1; + } + if ($args ~ "_escaped_fragment_") { + set $prerender 1; + } + if ($http_user_agent ~ "Prerender") { + set $prerender 0; + } + if ($uri ~* "\.(js|css|xml|less|png|jpg|jpeg|gif|pdf|doc|txt|ico|rss|zip|mp3|rar|exe|wmv|doc|avi|ppt|mpg|mpeg|tif|wav|mov|psd|ai|xls|mp4|m4a|swf|dat|dmg|iso|flv|m4v|torrent|ttf|woff|svg|eot)") { + set $prerender 0; + } + if ($prerender = 1) { + proxy_pass http://127.0.0.1:9292; + } + if ($prerender = 0) { + rewrite .* /index.html break; + } + } +``` + +### TODO: + +- cache for already fetched sites \ No newline at end of file diff --git a/cmd/root.go b/cmd/root.go new file mode 100644 index 0000000..48f7868 --- /dev/null +++ b/cmd/root.go @@ -0,0 +1,91 @@ +/* +Copyright © 2019 Darko Luketic + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ +package cmd + +import ( + "fmt" + "github.com/spf13/cobra" + "os" + + homedir "github.com/mitchellh/go-homedir" + "github.com/spf13/viper" +) + +var cfgFile string + +// rootCmd represents the base command when called without any subcommands +var rootCmd = &cobra.Command{ + Use: "chromedom", + Short: "A brief description of your application", + Long: `A longer description that spans multiple lines and likely contains +examples and usage of using your application. For example: + +Cobra is a CLI library for Go that empowers applications. +This application is a tool to generate the needed files +to quickly create a Cobra application.`, + // Uncomment the following line if your bare application + // has an action associated with it: + // Run: func(cmd *cobra.Command, args []string) { }, +} + +// Execute adds all child commands to the root command and sets flags appropriately. +// This is called by main.main(). It only needs to happen once to the rootCmd. +func Execute() { + if err := rootCmd.Execute(); err != nil { + fmt.Println(err) + os.Exit(1) + } +} + +func init() { + cobra.OnInitialize(initConfig) + + // Here you will define your flags and configuration settings. + // Cobra supports persistent flags, which, if defined here, + // will be global for your application. + + rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.chromedom.yaml)") + + // Cobra also supports local flags, which will only run + // when this action is called directly. + rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle") +} + +// initConfig reads in config file and ENV variables if set. +func initConfig() { + if cfgFile != "" { + // Use config file from the flag. + viper.SetConfigFile(cfgFile) + } else { + // Find home directory. + home, err := homedir.Dir() + if err != nil { + fmt.Println(err) + os.Exit(1) + } + + // Search config in home directory with name ".chromedom" (without extension). + viper.AddConfigPath(home) + viper.SetConfigName(".chromedom") + } + + viper.AutomaticEnv() // read in environment variables that match + + // If a config file is found, read it in. + if err := viper.ReadInConfig(); err == nil { + fmt.Println("Using config file:", viper.ConfigFileUsed()) + } +} diff --git a/cmd/serve.go b/cmd/serve.go new file mode 100644 index 0000000..6c87de5 --- /dev/null +++ b/cmd/serve.go @@ -0,0 +1,68 @@ +/* +Copyright © 2019 Darko Luketic + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ +package cmd + +import ( + "fmt" + "github.com/dalu/chromedom/server" + "github.com/spf13/cobra" + "net" + "net/http" + "os" +) + +// serveCmd represents the serve command +var serveCmd = &cobra.Command{ + Use: "serve", + Short: "", + Long: ``, + RunE: func(cmd *cobra.Command, args []string) error { + binary := cmd.Flag("binary").Value.String() + s := http.DefaultServeMux + h := server.NewHandler(binary) + s.Handle("/", h) + return http.ListenAndServe(":9292", s) + // return RunUnix("/tmp/chromedom.sock", s) + }, +} + +func RunUnix(file string, engine *http.ServeMux) (err error) { + fmt.Printf("Listening and serving HTTP on unix:/%s", file) + os.Remove(file) + listener, err := net.Listen("unix", file) + if err != nil { + return + } + defer listener.Close() + os.Chmod(file, 0777) + err = http.Serve(listener, engine) + return +} + +func init() { + rootCmd.AddCommand(serveCmd) + + // Here you will define your flags and configuration settings. + + // Cobra supports Persistent Flags which will work for this command + // and all subcommands, e.g.: + // serveCmd.PersistentFlags().String("foo", "", "A help for foo") + + // Cobra supports local flags which will only run when this command + // is called directly, e.g.: + // serveCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle") + serveCmd.Flags().String("binary", "/bin/chromium", "chrome, chromium or headless binary path") +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..e6f7839 --- /dev/null +++ b/go.mod @@ -0,0 +1,10 @@ +module github.com/dalu/chromedom + +go 1.13 + +require ( + github.com/gin-gonic/gin v1.4.0 + github.com/mitchellh/go-homedir v1.1.0 + github.com/spf13/cobra v0.0.5 + github.com/spf13/viper v1.4.0 +) diff --git a/main.go b/main.go new file mode 100644 index 0000000..a410394 --- /dev/null +++ b/main.go @@ -0,0 +1,22 @@ +/* +Copyright © 2019 Darko Luketic + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ +package main + +import "github.com/dalu/chromedom/cmd" + +func main() { + cmd.Execute() +} diff --git a/server/handler.go b/server/handler.go new file mode 100644 index 0000000..deabf10 --- /dev/null +++ b/server/handler.go @@ -0,0 +1,77 @@ +/* +Copyright © 2019 Darko Luketic + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ +package server + +import ( + "bytes" + "fmt" + "net/http" + "os/exec" +) + +type Handler struct { + binary string +} + +func NewHandler(binary string) *Handler { + h := new(Handler) + h.binary = binary + return h +} + +func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) { + b, e := h.FetchDom(fmt.Sprintf("https://%s%s", r.Host, r.RequestURI)) + if e != nil { + fmt.Fprintln(w, e.Error()) + return + } + w.Write(b.Bytes()) +} + +func (h *Handler) FetchDom(url string) (*bytes.Buffer, error) { + params := []string{ + "--disable-client-side-phishing-detection", + "--disable-cloud-import", + "--disable-default-apps", + "--disable-dinosaur-easter-egg", + "--disable-new-tab-first-run", + "--disable-offer-upload-credit-cards", + "--disable-signin-promo", + "--disable-sync", + "--disable-translate", + "--hide-scrollbars", + "--incognito", + "--mute-audio", + "--no-default-browser-check", + "--no-first-run", + "--noerrdialogs", + "--password-store=basic", + "--window-size=1280,1696", + "--headless", + "--disable-gpu", + "--disable-software-rasterizer", + "--no-sandbox", + "--dump-dom", + url, + } + cmd := exec.Command(h.binary, params...) + buf := bytes.NewBuffer(nil) + cmd.Stdout = buf + if e := cmd.Run(); e != nil { + return nil, e + } + return buf, nil +}