Merge branch 'main' into testing testing

5 files changed, 142 insertions, 180 deletions

diff --git a/data.go b/data.go
index 6204a9c..e31de7e 100644
--- a/data.go
+++ b/data.go
@@ -8,6 +8,8 @@ var UserAgents = map[string]string{
 	"IPhone":           "Mozilla/5.0 (iPhone; CPU iPhone OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148",
 }
 
+var maxBodySize int64 = 2 * 1024 * 1024
+
 type ParserType bool
 
 const (
diff --git a/gemini.go b/gemini.go
index 57d144e..95cec42 100644
--- a/gemini.go
+++ b/gemini.go
@@ -94,7 +94,10 @@ func gmiGet(remote_url string, redirs int) (string, error) {
 	}
 	output := bytes.NewBufferString("")
 	hw := HTMLWriter{out: output}
-	gemini.ParseLines(resp.Body, hw.Handle)
+	err = gemini.ParseLines(resp.Body, hw.Handle)
+	if err != nil {
+		return "", err
+	}
 	return output.String(), nil
 
 }
diff --git a/go.mod b/go.mod
index 0e23868..340ab50 100644
--- a/go.mod
+++ b/go.mod
@@ -5,20 +5,16 @@ go 1.19
 require (
 	git.sr.ht/~adnano/go-gemini v0.2.3
 	github.com/flosch/pongo2/v6 v6.0.0
-	github.com/go-shiori/go-readability v0.0.0-20220215145315-dd6828d2f09b
+	github.com/go-shiori/go-readability v0.0.0-20230421032831-c66949dfc0ad
 	github.com/vincent-petithory/dataurl v1.0.0
-	golang.org/x/net v0.0.0-20210614182718-04defd469f4e
-	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4
+	golang.org/x/net v0.10.0
+	golang.org/x/time v0.3.0
 
 )
 
-require github.com/stretchr/testify v1.8.0 // indirect
-
 require (
-	github.com/andybalholm/cascadia v1.2.0 // indirect
-	github.com/go-shiori/dom v0.0.0-20210627111528-4e4722cd0d65 // indirect
-	github.com/gogs/chardet v0.0.0-20191104214054-4b6791f73a28 // indirect
-	github.com/sirupsen/logrus v1.8.1 // indirect
-	golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac // indirect
-	golang.org/x/text v0.3.6 // indirect
+	github.com/andybalholm/cascadia v1.3.2 // indirect
+	github.com/go-shiori/dom v0.0.0-20230515143342-73569d674e1c // indirect
+	github.com/gogs/chardet v0.0.0-20211120154057-b7413eaefb8f // indirect
+	golang.org/x/text v0.9.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 473b427..5d4d7b6 100644
--- a/go.sum
+++ b/go.sum
@@ -1,177 +1,69 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 git.sr.ht/~adnano/go-gemini v0.2.3 h1:oJ+Y0/mheZ4Vg0ABjtf5dlmvq1yoONStiaQvmWWkofc=
 git.sr.ht/~adnano/go-gemini v0.2.3/go.mod h1:hQ75Y0i5jSFL+FQ7AzWVAYr5LQsaFC7v3ZviNyj46dY=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
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-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/andybalholm/cascadia v1.2.0 h1:vuRCkM5Ozh/BfmsaTm26kbjm0mIOM3yS5Ek/F5h18aE=
 github.com/andybalholm/cascadia v1.2.0/go.mod h1:YCyR8vOZT9aZ1CHEd8ap0gMVm2aFgxBp0T0eFw1RUQY=
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 github.com/vincent-petithory/dataurl v1.0.0/go.mod h1:FHafX5vmDzyP+1CQATJn7WFKc9CvnvxyvZy6I1MrG/U=
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 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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 golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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-gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
-gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/main.go b/main.go
index 204a56b..e4c7e21 100644
--- a/main.go
+++ b/main.go
@@ -12,6 +12,7 @@ import (
 	"net/url"
 	"os"
 	"strings"
+	"time"
 
 	"net/http/pprof"
 
@@ -51,7 +52,11 @@ func postFormHandler(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "Method not allowed "+r.Method, http.StatusInternalServerError)
 		return
 	}
-	r.ParseForm()
+	err := r.ParseForm()
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
 	log.Println(r.Form)
 	target_url := r.Form.Get("target_url")
 	rd := r.Form["readability"]
@@ -82,7 +87,7 @@ func postFormHandler(w http.ResponseWriter, r *http.Request) {
 		MaxAge:   3600,
 		HttpOnly: true,
 		Secure:   true,
-		SameSite: http.SameSiteLaxMode,
+		SameSite: http.SameSiteStrictMode,
 	}
 	http.SetCookie(w, &cookie)
 	log.Println(final)
@@ -145,6 +150,11 @@ func fetch(fetchurl string, user_agent string, parser_select bool, original *htt
 		return nil, err
 
 	}
+	tr := &http.Transport{
+		MaxIdleConns:       10,
+		IdleConnTimeout:    30 * time.Second,
+		DisableCompression: false,
+	}
 	u, err := url.Parse(original.RequestURI)
 	if err != nil {
 		log.Println(err)
@@ -161,6 +171,7 @@ func fetch(fetchurl string, user_agent string, parser_select bool, original *htt
 	lightswitch := u.String()
 
 	client := &http.Client{}
+	client.Transport = tr
 
 	req, err := http.NewRequest("GET", fetchurl, nil)
 	if err != nil {
@@ -176,20 +187,56 @@ func fetch(fetchurl string, user_agent string, parser_select bool, original *htt
 	req.Header.Set("Accept-Language", "en-US,en;q=0.9")
 	req.Header.Set("Accept-Encoding", "gzip")
 	resp, err := client.Do(req)
-	resp.Request = nil // just in case
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
+
+	if err != nil {
+		return nil, err
+	}
+	var tmp bytes.Buffer
 	if strings.EqualFold(resp.Header.Get("Content-Encoding"), "gzip") {
-		log.Println("dezipping")
-		var tmp bytes.Buffer
+		log.Println("Yes we gziped")
+
 		gz, _ := gzip.NewReader(resp.Body)
-		io.Copy(&tmp, gz)
-		resp.Body.Close()
+
+		contentSize := resp.ContentLength
+
+		if contentSize > maxBodySize {
+			return nil, errors.New("response body to large")
+		}
+
+		decompBuffMax := maxBodySize * 2
+		log.Println("dezipping")
+
+		for {
+			var bytesRead int64 = 0
+			n, err := io.CopyN(&tmp, gz, 4096)
+			if errors.Is(err, io.EOF) {
+				break
+			}
+			bytesRead += n
+			if bytesRead > decompBuffMax {
+				return nil, errors.New("decompression failed")
+			}
+
+		}
+
+		err = resp.Body.Close()
+		if err != nil {
+			return nil, err
+		}
+
 		resp.Body = io.NopCloser(&tmp)
+	} else {
+		_, err = io.Copy(&tmp, resp.Body)
+		if err != nil {
+			return nil, err
+		}
+		resp.Body.Close()
 	}
-	var tmp2 bytes.Buffer
-	io.Copy(&tmp2, resp.Body)
+
 	publishUrl, err := url.Parse(fetchurl)
 	if err != nil {
 		return resp, err
@@ -198,7 +245,7 @@ func fetch(fetchurl string, user_agent string, parser_select bool, original *htt
 	var article GenaricArticle
 
 	if parser_select {
-		raw_article, err := readability.FromReader(&tmp2, publishUrl)
+		raw_article, err := readability.FromReader(&tmp, publishUrl)
 		if err != nil {
 			return nil, err
 		}
@@ -209,7 +256,7 @@ func fetch(fetchurl string, user_agent string, parser_select bool, original *htt
 		article.Length = raw_article.Length
 		article.Image = raw_article.Image
 	} else {
-		raw_article, err := nuparser.FromReader(&tmp2)
+		raw_article, err := nuparser.FromReader(&tmp)
 		if err != nil {
 			return nil, err
 		}
@@ -224,7 +271,6 @@ func fetch(fetchurl string, user_agent string, parser_select bool, original *htt
 	tmp_content := strings.NewReader(article.Content)
 	backupContent := strings.Clone(article.Content)
 	filteredContent, err := RewriteLinks(tmp_content, homeURL)
-	log.Println(homeURL)
 
 	article.Content = filteredContent
 	if err != nil {
@@ -243,12 +289,11 @@ func fetch(fetchurl string, user_agent string, parser_select bool, original *htt
 }
 
 func indexHandler(w http.ResponseWriter, r *http.Request) {
-	var tpl = pongo2.Must(pongo2.FromFile("index.html"))
-
 	if r.Method == http.MethodPost {
 		http.Error(w, "I am not an owl", http.StatusTeapot)
 		return
 	}
+	var tpl = pongo2.Must(pongo2.FromFile("index.html"))
 
 	if r.URL.Path == "/" {
 		err := tpl.ExecuteWriter(pongo2.Context{"useragents": UserAgents, "version": version}, w)
@@ -304,7 +349,10 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 				return
 			}
 			defer resp.Body.Close()
-			io.Copy(w, resp.Body)
+			_, err = io.Copy(w, resp.Body)
+			if err != nil {
+				http.Error(w, err.Error(), http.StatusInternalServerError)
+			}
 			return
 		}
 
@@ -320,7 +368,11 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 		defer resp.Body.Close()
-		io.Copy(w, resp.Body)
+		_, err = io.Copy(w, resp.Body)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
 		return
 
 	}
@@ -353,7 +405,10 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 		defer resp.Body.Close()
-		io.Copy(w, resp.Body)
+		_, err = io.Copy(w, resp.Body)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+		}
 		return
 	}
 
@@ -413,7 +468,11 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	defer resp.Body.Close()
-	io.Copy(w, resp.Body)
+	_, err = io.Copy(w, resp.Body)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
 
 }
 
@@ -430,10 +489,16 @@ func rateLimitIndex(next func(writer http.ResponseWriter, request *http.Request)
 	})
 }
 func main() {
+	srv := &http.Server{
+		ReadTimeout:  5 * time.Second,
+		WriteTimeout: 10 * time.Second,
+	}
+
 	port := os.Getenv("PORT")
 	if port == "" {
 		port = "3000"
 	}
+	srv.Addr = ":" + port
 
 	fs := http.FileServer(http.Dir("assets"))
 	mux := http.NewServeMux()
@@ -451,6 +516,10 @@ func main() {
 		mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
 	}
 	mux.Handle("/assets/", http.StripPrefix("/assets/", fs))
+	srv.Handler = mux
 
-	http.ListenAndServe(":"+port, mux)
+	err := srv.ListenAndServe()
+	if err != nil {
+		panic(err)
+	}
 }