Merge branch 'main' into redirect-short-links

Air-toml

.air.toml

@@ -0,0 +1,44 @@
+root = "."
+testdata_dir = "testdata"
+tmp_dir = "tmp"
+
+[build]
+  args_bin = []
+  bin = "./tmp/main"
+  cmd = "go build -o ./tmp/main ."
+  delay = 0
+  exclude_dir = ["assets", "tmp", "vendor", "testdata"]
+  exclude_file = []
+  exclude_regex = ["_test.go"]
+  exclude_unchanged = false
+  follow_symlink = false
+  full_bin = ""
+  include_dir = []
+  include_ext = ["go", "tpl", "tmpl", "html"]
+  include_file = []
+  kill_delay = "0s"
+  log = "build-errors.log"
+  poll = false
+  poll_interval = 0
+  rerun = false
+  rerun_delay = 500
+  send_interrupt = false
+  stop_on_error = false
+
+[color]
+  app = ""
+  build = "yellow"
+  main = "magenta"
+  runner = "green"
+  watcher = "cyan"
+
+[log]
+  main_only = false
+  time = false
+
+[misc]
+  clean_on_exit = false
+
+[screen]
+  clear_on_rebuild = false
+  keep_scroll = true

.gitignore

@@ -1,4 +1,5 @@
 .env
 docker-compose.yml
 .DS_Store
-*bin
+*bin
+/tmp

README.md

@@ -14,18 +14,22 @@ This project is super lightweight by design. The UI is simple and the frontend i
 
 ## Clearnet Instances
 
-| Instance URL                                                    | Region                           | Notes                                                                                            |
-| --------------------------------------------------------------- | -------------------------------- | ------------------------------------------------------------------------------------------------ |
-| [code.whatever.social](https://code.whatever.social)            | United States & The Netherlands  | Operated by [Whatever Social](https://whatever.social) and [http.james](https://httpjames.space) |
-| [ao.vern.cc](https://ao.vern.cc)                                | United States                    | Operated by [vern.cc](https://vern.cc)                                                           |
-| [overflow.smnz.de](https://overflow.smnz.de)                    | Germany                          | Operated by [smnz.de](https://smnz.de)                                                           |
-| [overflow.lunar.icu](https://overflow.lunar.icu)                | Germany                          | Operated by [lunar.icu](https://lunar.icu/)                                                      |
-| [overflow.adminforge.de](https://overflow.adminforge.de/)       | Germany                          | Operated by [adminForge](https://adminforge.de/)                                                 |
-| [overflow.hostux.net](https://overflow.hostux.net/)             | France                           | Operated by [Hostux](https://hostux.net/)                                                        |
-| [overflow.projectsegfau.lt](https://overflow.projectsegfau.lt/) | United States, Luxembourg, India | Operated by [Project Segfault](https://projectsegfau.lt/)                                        |
-| [code.xbdm.fun](https://code.xbdm.fun)                          | Germany                          | Operated by [xbdm.fun](https://xbdm.fun)                                                         |
-| [overflow.fascinated.cc](https://overflow.fascinated.cc/)       | Germany                          | Operated by [fascinated.cc](https://fascinated.cc/)                                              |
-| [ao.bloatcat.tk](https://ao.bloatcat.tk)                        | Iceland                          | Operated by [bloatcat.tk](https://bloatcat.tk)                                                   |
+| Instance URL                                                                    | Region                           | Notes                                                                                            |
+| ------------------------------------------------------------------------------- | -------------------------------- | ------------------------------------------------------------------------------------------------ |
+| [code.whatever.social](https://code.whatever.social)                            | United States & The Netherlands  | Operated by [Whatever Social](https://whatever.social) and [http.james](https://httpjames.space) |
+| [ao.vern.cc](https://ao.vern.cc)                                                | United States                    | Operated by [vern.cc](https://vern.cc)                                                           |
+| [overflow.smnz.de](https://overflow.smnz.de)                                    | Germany                          | Operated by [smnz.de](https://smnz.de)                                                           |
+| [overflow.lunar.icu](https://overflow.lunar.icu)                                | Germany                          | Operated by [lunar.icu](https://lunar.icu/)                                                      |
+| [overflow.adminforge.de](https://overflow.adminforge.de/)                       | Germany                          | Operated by [adminForge](https://adminforge.de/)                                                 |
+| [overflow.hostux.net](https://overflow.hostux.net/)                             | France                           | Operated by [Hostux](https://hostux.net/)                                                        |
+| [overflow.projectsegfau.lt](https://overflow.projectsegfau.lt/)                 | United States, France, India | Operated by [Project Segfault](https://projectsegfau.lt/)                                        |
+| [code.xbdm.fun](https://code.xbdm.fun)                                          | Germany                          | Operated by [xbdm.fun](https://xbdm.fun)                                                         |
+| [overflow.fascinated.cc](https://overflow.fascinated.cc/)                       | Germany                          | Operated by [fascinated.cc](https://fascinated.cc/)                                              |
+| [ao.bloatcat.tk](https://ao.bloatcat.tk)                                        | Iceland                          | Operated by [bloatcat.tk](https://bloatcat.tk)                                                   |
+| [anonoverflow.frontendfriendly.xyz](https://anonoverflow.frontendfriendly.xyz/) | United States                    | Operated by [frontendfriendly.xyz](https://frontendfriendly.xyz/)                                |
+| [ao.owo.si](https://ao.owo.si/)                                                 | Germany                          | Operated by [owo.si](https://owo.si/)                                                            |
+| [overflow.datura.network](https://overflow.datura.network/)                     | Germany                          | Operated by [datura.network](https://datura.network)                                             |
+|                                                                                 |                                  |                                                                                                  |
 
 ## Other Instances
 
@@ -33,11 +37,14 @@ This project is super lightweight by design. The UI is simple and the frontend i
 | ---------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------- | --------------------------------------------------------- |
 | [ao.vernccvbvyi5qhfzyqengccj7lkove6bjot2xhh5kajhwvidqafczrad.onion](http://ao.vernccvbvyi5qhfzyqengccj7lkove6bjot2xhh5kajhwvidqafczrad.onion)              | United States                    | Operated by [vern.cc](https://vern.cc)                    |
 | [vernmzgraj6aaoafmehupvtkkynpaa67rxcdj2kinwiy6konn6rq.b32.i2p](http://vernmzgraj6aaoafmehupvtkkynpaa67rxcdj2kinwiy6konn6rq.b32.i2p)                        | United States                    | Operated by [vern.cc](https://vern.cc)                    |
-| [overflow.pjsfkvpxlinjamtawaksbnnaqs2fc2mtvmozrzckxh7f3kis6yea25ad.onion](http://overflow.pjsfkvpxlinjamtawaksbnnaqs2fc2mtvmozrzckxh7f3kis6yea25ad.onion/) | United States, Luxembourg, India | Operated by [Project Segfault](https://projectsegfau.lt/) |
+| [overflow.pjsfkvpxlinjamtawaksbnnaqs2fc2mtvmozrzckxh7f3kis6yea25ad.onion](http://overflow.pjsfkvpxlinjamtawaksbnnaqs2fc2mtvmozrzckxh7f3kis6yea25ad.onion/) | Luxembourg | Operated by [Project Segfault](https://projectsegfau.lt/) |
+| [overflow.daturab6drmkhyeia4ch5gvfc2f3wgo6bhjrv3pz6n7kxmvoznlkq4yd.onion](http://overflow.daturab6drmkhyeia4ch5gvfc2f3wgo6bhjrv3pz6n7kxmvoznlkq4yd.onion/) | Germany                          | Operated by [datura.network](https://datura.network)      |
+| [ao.pk47sgwhncn5cgidm7bofngmh7lc7ukjdpk5bjwfemmyp27ovl25ikyd.onion](http://ao.pk47sgwhncn5cgidm7bofngmh7lc7ukjdpk5bjwfemmyp27ovl25ikyd.onion/)             | Germany                          | Operated by [owo.si](https://owo.si/)                     |
+| [ay7akchgdh76r4lc62hzd52z6xqoh67loototsetvqxo5o7ngo5q.b32.i2p](http://ay7akchgdh76r4lc62hzd52z6xqoh67loototsetvqxo5o7ngo5q.b32.i2p/)                       | Germany                          | Operated by [owo.si](https://owo.si/)                     |
 
 ## Why use AnonymousOverflow over StackOverflow?
 
--   StackOverflow collects a lot of information
+- StackOverflow collects a lot of information
 
 While it's understandable that StackOverflow collects a lot of technical data for product development, debugging and to serve the best experience to its users, not everyone wants their
 
@@ -45,7 +52,7 @@ While it's understandable that StackOverflow collects a lot of technical data fo
 
 to be collected and stored.
 
--   StackOverflow shares your information with third-parties
+- StackOverflow shares your information with third-parties
 
 StackOverflow does not sell your information, but it does share it with third-parties, including conglomerates.
 
@@ -54,7 +61,7 @@ StackOverflow does not sell your information, but it does share it with third-pa
 
 Their main website also [contains trackers from Alphabet](https://themarkup.org/blacklight?url=stackoverflow.com).
 
--   Reduced clutter
+- Reduced clutter
 
 StackOverflow has a cluttered UI that might distract you from the content you're trying to find. AnonymousOverflow simplifies the interface to make it easier to read and navigate.
 
@@ -86,9 +93,9 @@ You can easily convert StackOverflow URLs to AnonymousOverflow ones by adding th
 
 ```js
 javascript: (function () {
-    window.location = window.location
-        .toString()
-        .replace(/stackoverflow\.com/, "code.whatever.social");
+  window.location = window.location
+    .toString()
+    .replace(/stackoverflow\.com/, "code.whatever.social");
 })();
 ```
 
@@ -104,8 +111,8 @@ Read the [wiki page](https://github.com/httpjamesm/AnonymousOverflow/wiki/Deploy
 
 ## Attribution
 
--   Icons provided by [heroicons](https://heroicons.com) under the [MIT License](https://choosealicense.com/licenses/mit/)
--   [Gin](https://github.com/gin-gonic/gin) under the [MIT License](https://github.com/gin-gonic/gin/blob/master/LICENSE)
--   [goquery](https://github.com/PuerkitoBio/goquery) under the [BSD 3-Clause License](https://github.com/PuerkitoBio/goquery/blob/master/LICENSE)
--   [resty](https://github.com/go-resty/resty) under the [MIT License](https://github.com/go-resty/resty/blob/master/LICENSE)
--   [Chroma](https://github.com/alecthomas/chroma) under the [MIT License](https://github.com/alecthomas/chroma/blob/master/COPYING)
+- Icons provided by [heroicons](https://heroicons.com) under the [MIT License](https://choosealicense.com/licenses/mit/)
+- [Gin](https://github.com/gin-gonic/gin) under the [MIT License](https://github.com/gin-gonic/gin/blob/master/LICENSE)
+- [goquery](https://github.com/PuerkitoBio/goquery) under the [BSD 3-Clause License](https://github.com/PuerkitoBio/goquery/blob/master/LICENSE)
+- [resty](https://github.com/go-resty/resty) under the [MIT License](https://github.com/go-resty/resty/blob/master/LICENSE)
+- [Chroma](https://github.com/alecthomas/chroma) under the [MIT License](https://github.com/alecthomas/chroma/blob/master/COPYING)

main.go

@@ -50,6 +50,8 @@ func main() {
 	r.GET("/", routes.GetHome)
 	r.POST("/", routes.PostHome)
 
+	r.GET("/a/:id", routes.RedirectShortenedOverflowURL)
+
 	r.GET("/questions/:id", func(c *gin.Context) {
 		// redirect user to the question with the title
 		c.Redirect(302, fmt.Sprintf("/questions/%s/placeholder", c.Param("id")))

src/routes/home.go

@@ -35,10 +35,14 @@ func PostHome(c *gin.Context) {
 
 	soLink := body.URL
 
+	// remove the www.
+	soLink = strings.ReplaceAll(soLink, "www.", "")
+
 	// validate URL
 	isStackOverflow := strings.HasPrefix(soLink, "https://stackoverflow.com/questions/")
+	isShortenedStackOverflow := strings.HasPrefix(soLink, "https://stackoverflow.com/a/")
 	isStackExchange := stackExchangeRegex.MatchString(soLink)
-	if !isStackExchange && !isStackOverflow {
+	if !isStackExchange && !isStackOverflow && !isShortenedStackOverflow {
 		c.HTML(400, "home.html", gin.H{
 			"errorMessage": "Invalid stack overflow/exchange URL",
 			"theme":        c.MustGet("theme").(string),
@@ -47,7 +51,7 @@ func PostHome(c *gin.Context) {
 	}
 
 	// if stack overflow, trim https://stackoverflow.com
-	if isStackOverflow {
+	if isStackOverflow || isShortenedStackOverflow {
 		c.Redirect(302, strings.TrimPrefix(soLink, "https://stackoverflow.com"))
 		return
 	}

src/routes/shortened.go

@@ -0,0 +1,44 @@
+package routes
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-resty/resty/v2"
+)
+
+func RedirectShortenedOverflowURL(c *gin.Context) {
+	id := c.Param("id")
+
+	// fetch the stack overflow URL
+	client := resty.New()
+	client.SetRedirectPolicy(
+		resty.RedirectPolicyFunc(func(req *http.Request, via []*http.Request) error {
+			return http.ErrUseLastResponse
+		}),
+	)
+
+	resp, err := client.R().Get(fmt.Sprintf("https://www.stackoverflow.com/a/%s", id))
+	if err != nil {
+		c.HTML(400, "home.html", gin.H{
+			"errorMessage": "Unable to fetch stack overflow URL",
+			"theme":        c.MustGet("theme").(string),
+		})
+		return
+	}
+
+	if resp.StatusCode() != 302 {
+		c.HTML(400, "home.html", gin.H{
+			"errorMessage": fmt.Sprintf("Unexpected HTTP status from origin: %d", resp.StatusCode()),
+			"theme":        c.MustGet("theme").(string),
+		})
+		return
+	}
+
+	// get the redirect URL
+	location := resp.Header().Get("Location")
+
+	c.Redirect(302, fmt.Sprintf("%s%s", os.Getenv("APP_URL"), location))
+}