diff options
Diffstat (limited to 'internal/port')
| -rw-r--r-- | internal/port/gemini.go | 205 | ||||
| -rw-r--r-- | internal/port/gopher.go | 217 | ||||
| -rw-r--r-- | internal/port/main.go | 301 | ||||
| -rw-r--r-- | internal/port/tpl/gemini.html | 0 | ||||
| -rw-r--r-- | internal/port/tpl/gopher.html | 0 | ||||
| -rw-r--r-- | internal/port/tpl/startpage.html | 120 |
6 files changed, 843 insertions, 0 deletions
diff --git a/internal/port/gemini.go b/internal/port/gemini.go new file mode 100644 index 0000000..f9b0b97 --- /dev/null +++ b/internal/port/gemini.go | |||
| @@ -0,0 +1,205 @@ | |||
| 1 | package port | ||
| 2 | |||
| 3 | import ( | ||
| 4 | "bytes" | ||
| 5 | "fmt" | ||
| 6 | "html/template" | ||
| 7 | "io" | ||
| 8 | "log" | ||
| 9 | "mime" | ||
| 10 | "net/http" | ||
| 11 | "net/url" | ||
| 12 | "regexp" | ||
| 13 | "strings" | ||
| 14 | |||
| 15 | "golang.org/x/net/html/charset" | ||
| 16 | "golang.org/x/text/transform" | ||
| 17 | |||
| 18 | "git.vulpes.one/Feuerfuchs/port/port/libgemini" | ||
| 19 | |||
| 20 | "github.com/temoto/robotstxt" | ||
| 21 | ) | ||
| 22 | |||
| 23 | var ( | ||
| 24 | TermEscapeSGRPattern = regexp.MustCompile("\\[\\d+(;\\d+)*m") | ||
| 25 | ) | ||
| 26 | |||
| 27 | func resolveURI(uri string, baseURL *url.URL) (resolvedURI string) { | ||
| 28 | if strings.HasPrefix(uri, "//") { | ||
| 29 | resolvedURI = "/gemini/" + strings.TrimPrefix(uri, "//") | ||
| 30 | } else if strings.HasPrefix(uri, "gemini://") { | ||
| 31 | resolvedURI = "/gemini/" + strings.TrimPrefix(uri, "gemini://") | ||
| 32 | } else if strings.HasPrefix(uri, "gopher://") { | ||
| 33 | resolvedURI = "/gopher/" + strings.TrimPrefix(uri, "gopher://") | ||
| 34 | } else { | ||
| 35 | url, err := url.Parse(uri) | ||
| 36 | if err != nil { | ||
| 37 | return "" | ||
| 38 | } | ||
| 39 | adjustedURI := baseURL.ResolveReference(url) | ||
| 40 | path := adjustedURI.Path | ||
| 41 | if !strings.HasPrefix(path, "/") { | ||
| 42 | path = "/" + path | ||
| 43 | } | ||
| 44 | if adjustedURI.Scheme == "gemini" { | ||
| 45 | resolvedURI = "/gemini/" + adjustedURI.Host + path | ||
| 46 | } else if adjustedURI.Scheme == "gopher" { | ||
| 47 | resolvedURI = "/gopher/" + adjustedURI.Host + path | ||
| 48 | } else { | ||
| 49 | resolvedURI = adjustedURI.String() | ||
| 50 | } | ||
| 51 | } | ||
| 52 | |||
| 53 | return | ||
| 54 | } | ||
| 55 | |||
| 56 | func GeminiHandler(tpl *template.Template, robotsdata *robotstxt.RobotsData, assetList AssetList, robotsdebug bool) http.HandlerFunc { | ||
| 57 | return func(w http.ResponseWriter, req *http.Request) { | ||
| 58 | agent := req.UserAgent() | ||
| 59 | path := strings.TrimPrefix(req.URL.Path, "/gemini/") | ||
| 60 | |||
| 61 | if robotsdata != nil && robotsdebug && !robotsdata.TestAgent(path, agent) { | ||
| 62 | log.Printf("UserAgent %s ignored robots.txt", agent) | ||
| 63 | } | ||
| 64 | |||
| 65 | parts := strings.Split(path, "/") | ||
| 66 | hostport := parts[0] | ||
| 67 | |||
| 68 | if len(hostport) == 0 { | ||
| 69 | http.Redirect(w, req, "/", http.StatusFound) | ||
| 70 | return | ||
| 71 | } | ||
| 72 | |||
| 73 | title := hostport | ||
| 74 | |||
| 75 | var qs string | ||
| 76 | |||
| 77 | if req.URL.RawQuery != "" { | ||
| 78 | qs = fmt.Sprintf("?%s", url.QueryEscape(req.URL.RawQuery)) | ||
| 79 | } | ||
| 80 | |||
| 81 | uri, err := url.QueryUnescape(strings.Join(parts[1:], "/")) | ||
| 82 | if err != nil { | ||
| 83 | if e := tpl.Execute(w, TemplateVariables{ | ||
| 84 | Title: title, | ||
| 85 | URI: hostport, | ||
| 86 | Assets: assetList, | ||
| 87 | RawText: fmt.Sprintf("Error: %s", err), | ||
| 88 | Error: true, | ||
| 89 | Protocol: "gemini", | ||
| 90 | }); e != nil { | ||
| 91 | log.Println("Template error: " + e.Error()) | ||
| 92 | log.Println(err.Error()) | ||
| 93 | } | ||
| 94 | return | ||
| 95 | } | ||
| 96 | |||
| 97 | if uri != "" { | ||
| 98 | title = fmt.Sprintf("%s/%s", hostport, uri) | ||
| 99 | } | ||
| 100 | |||
| 101 | res, err := libgemini.Get( | ||
| 102 | fmt.Sprintf( | ||
| 103 | "gemini://%s/%s%s", | ||
| 104 | hostport, | ||
| 105 | uri, | ||
| 106 | qs, | ||
| 107 | ), | ||
| 108 | ) | ||
| 109 | |||
| 110 | if err != nil { | ||
| 111 | if e := tpl.Execute(w, TemplateVariables{ | ||
| 112 | Title: title, | ||
| 113 | URI: fmt.Sprintf("%s/%s", hostport, uri), | ||
| 114 | Assets: assetList, | ||
| 115 | RawText: fmt.Sprintf("Error: %s", err), | ||
| 116 | Error: true, | ||
| 117 | Protocol: "gemini", | ||
| 118 | }); e != nil { | ||
| 119 | log.Println("Template error: " + e.Error()) | ||
| 120 | log.Println(err.Error()) | ||
| 121 | } | ||
| 122 | return | ||
| 123 | } | ||
| 124 | |||
| 125 | if int(res.Header.Status/10) == 3 { | ||
| 126 | baseURL, err := url.Parse(fmt.Sprintf( | ||
| 127 | "gemini://%s/%s", | ||
| 128 | hostport, | ||
| 129 | uri, | ||
| 130 | )) | ||
| 131 | if err != nil { | ||
| 132 | if e := tpl.Execute(w, TemplateVariables{ | ||
| 133 | Title: title, | ||
| 134 | URI: fmt.Sprintf("%s/%s", hostport, uri), | ||
| 135 | Assets: assetList, | ||
| 136 | RawText: fmt.Sprintf("Error: %s", err), | ||
| 137 | Error: true, | ||
| 138 | Protocol: "gemini", | ||
| 139 | }); e != nil { | ||
| 140 | log.Println("Template error: " + e.Error()) | ||
| 141 | log.Println(err.Error()) | ||
| 142 | } | ||
| 143 | return | ||
| 144 | } | ||
| 145 | |||
| 146 | http.Redirect(w, req, resolveURI(res.Header.Meta, baseURL), http.StatusFound) | ||
| 147 | return | ||
| 148 | } | ||
| 149 | |||
| 150 | if int(res.Header.Status/10) != 2 { | ||
| 151 | if err := tpl.Execute(w, TemplateVariables{ | ||
| 152 | Title: title, | ||
| 153 | URI: fmt.Sprintf("%s/%s", hostport, uri), | ||
| 154 | Assets: assetList, | ||
| 155 | RawText: fmt.Sprintf("Error %d: %s", res.Header.Status, res.Header.Meta), | ||
| 156 | Error: true, | ||
| 157 | Protocol: "gemini", | ||
| 158 | }); err != nil { | ||
| 159 | log.Println("Template error: " + err.Error()) | ||
| 160 | } | ||
| 161 | return | ||
| 162 | } | ||
| 163 | |||
| 164 | if strings.HasPrefix(res.Header.Meta, "text/") { | ||
| 165 | buf := new(bytes.Buffer) | ||
| 166 | |||
| 167 | _, params, err := mime.ParseMediaType(res.Header.Meta) | ||
| 168 | if err != nil { | ||
| 169 | buf.ReadFrom(res.Body) | ||
| 170 | } else { | ||
| 171 | encoding, _ := charset.Lookup(params["charset"]) | ||
| 172 | readbuf := new(bytes.Buffer) | ||
| 173 | readbuf.ReadFrom(res.Body) | ||
| 174 | |||
| 175 | writer := transform.NewWriter(buf, encoding.NewDecoder()) | ||
| 176 | writer.Write(readbuf.Bytes()) | ||
| 177 | writer.Close() | ||
| 178 | } | ||
| 179 | |||
| 180 | var ( | ||
| 181 | rawText string | ||
| 182 | items []Item | ||
| 183 | ) | ||
| 184 | |||
| 185 | if strings.HasPrefix(res.Header.Meta, libgemini.MIME_GEMINI) { | ||
| 186 | items = parseGeminiDocument(buf, uri, hostport) | ||
| 187 | } else { | ||
| 188 | rawText = buf.String() | ||
| 189 | } | ||
| 190 | |||
| 191 | if err := tpl.Execute(w, TemplateVariables{ | ||
| 192 | Title: title, | ||
| 193 | URI: fmt.Sprintf("%s/%s", hostport, uri), | ||
| 194 | Assets: assetList, | ||
| 195 | Lines: items, | ||
| 196 | RawText: rawText, | ||
| 197 | Protocol: "gemini", | ||
| 198 | }); err != nil { | ||
| 199 | log.Println("Template error: " + err.Error()) | ||
| 200 | } | ||
| 201 | } else { | ||
| 202 | io.Copy(w, res.Body) | ||
| 203 | } | ||
| 204 | } | ||
| 205 | } | ||
diff --git a/internal/port/gopher.go b/internal/port/gopher.go new file mode 100644 index 0000000..ebeb213 --- /dev/null +++ b/internal/port/gopher.go | |||
| @@ -0,0 +1,217 @@ | |||
| 1 | package port | ||
| 2 | |||
| 3 | import ( | ||
| 4 | "bytes" | ||
| 5 | "fmt" | ||
| 6 | "html/template" | ||
| 7 | "io" | ||
| 8 | "log" | ||
| 9 | "net" | ||
| 10 | "net/http" | ||
| 11 | "net/url" | ||
| 12 | "strings" | ||
| 13 | |||
| 14 | "git.vulpes.one/Feuerfuchs/port/port/libgopher" | ||
| 15 | |||
| 16 | "github.com/davidbyttow/govips/pkg/vips" | ||
| 17 | "github.com/temoto/robotstxt" | ||
| 18 | ) | ||
| 19 | |||
| 20 | type Item struct { | ||
| 21 | Link template.URL | ||
| 22 | Type string | ||
| 23 | Text string | ||
| 24 | } | ||
| 25 | |||
| 26 | func renderGopherDirectory(w http.ResponseWriter, tpl *template.Template, assetList AssetList, uri string, hostport string, d libgopher.Directory) error { | ||
| 27 | var title string | ||
| 28 | |||
| 29 | out := make([]Item, len(d.Items)) | ||
| 30 | |||
| 31 | for i, x := range d.Items { | ||
| 32 | if x.Type == libgopher.INFO && x.Selector == "TITLE" { | ||
| 33 | title = x.Description | ||
| 34 | continue | ||
| 35 | } | ||
| 36 | |||
| 37 | tr := Item{ | ||
| 38 | Text: x.Description, | ||
| 39 | Type: x.Type.String(), | ||
| 40 | } | ||
| 41 | |||
| 42 | if x.Type == libgopher.INFO { | ||
| 43 | out[i] = tr | ||
| 44 | continue | ||
| 45 | } | ||
| 46 | |||
| 47 | if strings.HasPrefix(x.Selector, "URL:") || strings.HasPrefix(x.Selector, "/URL:") { | ||
| 48 | link := strings.TrimPrefix(strings.TrimPrefix(x.Selector, "/"), "URL:") | ||
| 49 | if strings.HasPrefix(link, "gemini://") { | ||
| 50 | link = fmt.Sprintf( | ||
| 51 | "/gemini/%s", | ||
| 52 | strings.TrimPrefix(link, "gemini://"), | ||
| 53 | ) | ||
| 54 | } else if strings.HasPrefix(link, "gopher://") { | ||
| 55 | link = fmt.Sprintf( | ||
| 56 | "/gopher/%s", | ||
| 57 | strings.TrimPrefix(link, "gopher://"), | ||
| 58 | ) | ||
| 59 | } | ||
| 60 | tr.Link = template.URL(link) | ||
| 61 | } else { | ||
| 62 | var linkHostport string | ||
| 63 | if x.Port != "70" { | ||
| 64 | linkHostport = net.JoinHostPort(x.Host, x.Port) | ||
| 65 | } else { | ||
| 66 | linkHostport = x.Host | ||
| 67 | } | ||
| 68 | |||
| 69 | path := url.PathEscape(x.Selector) | ||
| 70 | path = strings.Replace(path, "%2F", "/", -1) | ||
| 71 | tr.Link = template.URL( | ||
| 72 | fmt.Sprintf( | ||
| 73 | "/gopher/%s/%s%s", | ||
| 74 | linkHostport, | ||
| 75 | string(byte(x.Type)), | ||
| 76 | path, | ||
| 77 | ), | ||
| 78 | ) | ||
| 79 | } | ||
| 80 | |||
| 81 | out[i] = tr | ||
| 82 | } | ||
| 83 | |||
| 84 | if title == "" { | ||
| 85 | if uri != "" { | ||
| 86 | title = fmt.Sprintf("%s/%s", hostport, uri) | ||
| 87 | } else { | ||
| 88 | title = hostport | ||
| 89 | } | ||
| 90 | } | ||
| 91 | |||
| 92 | return tpl.Execute(w, TemplateVariables{ | ||
| 93 | Title: title, | ||
| 94 | URI: fmt.Sprintf("%s/%s", hostport, uri), | ||
| 95 | Assets: assetList, | ||
| 96 | Lines: out, | ||
| 97 | Protocol: "gopher", | ||
| 98 | }) | ||
| 99 | } | ||
| 100 | |||
| 101 | // GopherHandler returns a Handler that proxies requests | ||
| 102 | // to the specified Gopher server as denoated by the first argument | ||
| 103 | // to the request path and renders the content using the provided template. | ||
| 104 | // The optional robots parameters points to a robotstxt.RobotsData struct | ||
| 105 | // to test user agents against a configurable robotst.txt file. | ||
| 106 | func GopherHandler(tpl *template.Template, robotsdata *robotstxt.RobotsData, assetList AssetList, robotsdebug bool) http.HandlerFunc { | ||
| 107 | return func(w http.ResponseWriter, req *http.Request) { | ||
| 108 | agent := req.UserAgent() | ||
| 109 | path := strings.TrimPrefix(req.URL.Path, "/gopher/") | ||
| 110 | |||
| 111 | if robotsdata != nil && robotsdebug && !robotsdata.TestAgent(path, agent) { | ||
| 112 | log.Printf("UserAgent %s ignored robots.txt", agent) | ||
| 113 | } | ||
| 114 | |||
| 115 | parts := strings.Split(path, "/") | ||
| 116 | hostport := parts[0] | ||
| 117 | |||
| 118 | if len(hostport) == 0 { | ||
| 119 | http.Redirect(w, req, "/", http.StatusFound) | ||
| 120 | return | ||
| 121 | } | ||
| 122 | |||
| 123 | title := hostport | ||
| 124 | |||
| 125 | var qs string | ||
| 126 | |||
| 127 | if req.URL.RawQuery != "" { | ||
| 128 | qs = fmt.Sprintf("?%s", url.QueryEscape(req.URL.RawQuery)) | ||
| 129 | } | ||
| 130 | |||
| 131 | uri, err := url.QueryUnescape(strings.Join(parts[1:], "/")) | ||
| 132 | if err != nil { | ||
| 133 | if e := tpl.Execute(w, TemplateVariables{ | ||
| 134 | Title: title, | ||
| 135 | URI: hostport, | ||
| 136 | Assets: assetList, | ||
| 137 | RawText: fmt.Sprintf("Error: %s", err), | ||
| 138 | Error: true, | ||
| 139 | Protocol: "gopher", | ||
| 140 | }); e != nil { | ||
| 141 | log.Println("Template error: " + e.Error()) | ||
| 142 | log.Println(err.Error()) | ||
| 143 | } | ||
| 144 | return | ||
| 145 | } | ||
| 146 | |||
| 147 | if uri != "" { | ||
| 148 | title = fmt.Sprintf("%s/%s", hostport, uri) | ||
| 149 | } | ||
| 150 | |||
| 151 | res, err := libgopher.Get( | ||
| 152 | fmt.Sprintf( | ||
| 153 | "gopher://%s/%s%s", | ||
| 154 | hostport, | ||
| 155 | uri, | ||
| 156 | qs, | ||
| 157 | ), | ||
| 158 | ) | ||
| 159 | |||
| 160 | if err != nil { | ||
| 161 | if e := tpl.Execute(w, TemplateVariables{ | ||
| 162 | Title: title, | ||
| 163 | URI: fmt.Sprintf("%s/%s", hostport, uri), | ||
| 164 | Assets: assetList, | ||
| 165 | RawText: fmt.Sprintf("Error: %s", err), | ||
| 166 | Error: true, | ||
| 167 | Protocol: "gopher", | ||
| 168 | }); e != nil { | ||
| 169 | log.Println("Template error: " + e.Error()) | ||
| 170 | } | ||
| 171 | return | ||
| 172 | } | ||
| 173 | |||
| 174 | if res.Body != nil { | ||
| 175 | if len(parts) < 2 { | ||
| 176 | io.Copy(w, res.Body) | ||
| 177 | } else if strings.HasPrefix(parts[1], "0") && !strings.HasSuffix(uri, ".xml") && !strings.HasSuffix(uri, ".asc") { | ||
| 178 | buf := new(bytes.Buffer) | ||
| 179 | buf.ReadFrom(res.Body) | ||
| 180 | |||
| 181 | if err := tpl.Execute(w, TemplateVariables{ | ||
| 182 | Title: title, | ||
| 183 | URI: fmt.Sprintf("%s/%s", hostport, uri), | ||
| 184 | Assets: assetList, | ||
| 185 | RawText: buf.String(), | ||
| 186 | Protocol: "gopher", | ||
| 187 | }); err != nil { | ||
| 188 | log.Println("Template error: " + err.Error()) | ||
| 189 | } | ||
| 190 | } else if strings.HasPrefix(parts[1], "T") { | ||
| 191 | _, _, err = vips.NewTransform(). | ||
| 192 | Load(res.Body). | ||
| 193 | ResizeStrategy(vips.ResizeStrategyAuto). | ||
| 194 | ResizeWidth(160). | ||
| 195 | Quality(75). | ||
| 196 | Output(w). | ||
| 197 | Apply() | ||
| 198 | } else { | ||
| 199 | io.Copy(w, res.Body) | ||
| 200 | } | ||
| 201 | } else { | ||
| 202 | if err := renderGopherDirectory(w, tpl, assetList, uri, hostport, res.Dir); err != nil { | ||
| 203 | if e := tpl.Execute(w, TemplateVariables{ | ||
| 204 | Title: title, | ||
| 205 | URI: fmt.Sprintf("%s/%s", hostport, uri), | ||
| 206 | Assets: assetList, | ||
| 207 | RawText: fmt.Sprintf("Error: %s", err), | ||
| 208 | Error: true, | ||
| 209 | Protocol: "gopher", | ||
| 210 | }); e != nil { | ||
| 211 | log.Println("Template error: " + e.Error()) | ||
| 212 | log.Println(e.Error()) | ||
| 213 | } | ||
| 214 | } | ||
| 215 | } | ||
| 216 | } | ||
| 217 | } | ||
diff --git a/internal/port/main.go b/internal/port/main.go new file mode 100644 index 0000000..5cdd794 --- /dev/null +++ b/internal/port/main.go | |||
| @@ -0,0 +1,301 @@ | |||
| 1 | package port | ||
| 2 | |||
| 3 | import ( | ||
| 4 | "crypto/md5" | ||
| 5 | "fmt" | ||
| 6 | "html" | ||
| 7 | "html/template" | ||
| 8 | "io/ioutil" | ||
| 9 | "log" | ||
| 10 | "net/http" | ||
| 11 | "regexp" | ||
| 12 | "strings" | ||
| 13 | |||
| 14 | "github.com/NYTimes/gziphandler" | ||
| 15 | "github.com/davidbyttow/govips/pkg/vips" | ||
| 16 | "github.com/gobuffalo/packr/v2" | ||
| 17 | "github.com/temoto/robotstxt" | ||
| 18 | ) | ||
| 19 | |||
| 20 | type AssetList struct { | ||
| 21 | Style string | ||
| 22 | JS string | ||
| 23 | FontW string | ||
| 24 | FontW2 string | ||
| 25 | PropFontW string | ||
| 26 | PropFontW2 string | ||
| 27 | } | ||
| 28 | |||
| 29 | type TemplateVariables struct { | ||
| 30 | Title string | ||
| 31 | URI string | ||
| 32 | Assets AssetList | ||
| 33 | RawText string | ||
| 34 | Lines []Item | ||
| 35 | Error bool | ||
| 36 | Protocol string | ||
| 37 | } | ||
| 38 | |||
| 39 | func DefaultHandler(tpl *template.Template, startpagetext string, assetList AssetList) http.HandlerFunc { | ||
| 40 | return func(w http.ResponseWriter, req *http.Request) { | ||
| 41 | if err := tpl.Execute(w, TemplateVariables{ | ||
| 42 | Title: "Gopher/Gemini proxy", | ||
| 43 | Assets: assetList, | ||
| 44 | RawText: startpagetext, | ||
| 45 | Protocol: "startpage", | ||
| 46 | }); err != nil { | ||
| 47 | log.Println("Template error: " + err.Error()) | ||
| 48 | } | ||
| 49 | } | ||
| 50 | } | ||
| 51 | |||
| 52 | // RobotsTxtHandler returns the contents of the robots.txt file | ||
| 53 | // if configured and valid. | ||
| 54 | func RobotsTxtHandler(robotstxtdata []byte) http.HandlerFunc { | ||
| 55 | return func(w http.ResponseWriter, req *http.Request) { | ||
| 56 | if robotstxtdata == nil { | ||
| 57 | http.Error(w, "Not Found", http.StatusNotFound) | ||
| 58 | return | ||
| 59 | } | ||
| 60 | |||
| 61 | w.Header().Set("Content-Type", "text/plain") | ||
| 62 | w.Write(robotstxtdata) | ||
| 63 | } | ||
| 64 | } | ||
| 65 | |||
| 66 | func FaviconHandler(favicondata []byte) http.HandlerFunc { | ||
| 67 | return func(w http.ResponseWriter, req *http.Request) { | ||
| 68 | if favicondata == nil { | ||
| 69 | http.Error(w, "Not Found", http.StatusNotFound) | ||
| 70 | return | ||
| 71 | } | ||
| 72 | |||
| 73 | w.Header().Set("Content-Type", "image/vnd.microsoft.icon") | ||
| 74 | w.Header().Set("Cache-Control", "max-age=2592000") | ||
| 75 | w.Write(favicondata) | ||
| 76 | } | ||
| 77 | } | ||
| 78 | |||
| 79 | func StyleHandler(styledata []byte) http.HandlerFunc { | ||
| 80 | return func(w http.ResponseWriter, req *http.Request) { | ||
| 81 | w.Header().Set("Content-Type", "text/css") | ||
| 82 | w.Header().Set("Cache-Control", "max-age=2592000") | ||
| 83 | w.Write(styledata) | ||
| 84 | } | ||
| 85 | } | ||
| 86 | |||
| 87 | func JavaScriptHandler(jsdata []byte) http.HandlerFunc { | ||
| 88 | return func(w http.ResponseWriter, req *http.Request) { | ||
| 89 | w.Header().Set("Content-Type", "text/javascript") | ||
| 90 | w.Header().Set("Cache-Control", "max-age=2592000") | ||
| 91 | w.Write(jsdata) | ||
| 92 | } | ||
| 93 | } | ||
| 94 | |||
| 95 | func FontHandler(woff2 bool, fontdata []byte) http.HandlerFunc { | ||
| 96 | return func(w http.ResponseWriter, req *http.Request) { | ||
| 97 | if fontdata == nil { | ||
| 98 | http.Error(w, "Not Found", http.StatusNotFound) | ||
| 99 | return | ||
| 100 | } | ||
| 101 | |||
| 102 | if woff2 { | ||
| 103 | w.Header().Set("Content-Type", "font/woff2") | ||
| 104 | } else { | ||
| 105 | w.Header().Set("Content-Type", "font/woff") | ||
| 106 | } | ||
| 107 | w.Header().Set("Cache-Control", "max-age=2592000") | ||
| 108 | |||
| 109 | w.Write(fontdata) | ||
| 110 | } | ||
| 111 | } | ||
| 112 | |||
| 113 | // ListenAndServe creates a listening HTTP server bound to | ||
| 114 | // the interface specified by bind and sets up a Gopher to HTTP | ||
| 115 | // proxy proxying requests as requested and by default will prozy | ||
| 116 | // to a Gopher server address specified by uri if no servers is | ||
| 117 | // specified by the request. The robots argument is a pointer to | ||
| 118 | // a robotstxt.RobotsData struct for testing user agents against | ||
| 119 | // a configurable robots.txt file. | ||
| 120 | func ListenAndServe(bind, startpagefile string, robotsfile string, robotsdebug bool, vipsconcurrency int) error { | ||
| 121 | box := packr.New("assets", "../assets") | ||
| 122 | |||
| 123 | // | ||
| 124 | // Robots | ||
| 125 | |||
| 126 | var robotsdata *robotstxt.RobotsData | ||
| 127 | |||
| 128 | robotstxtdata, err := ioutil.ReadFile(robotsfile) | ||
| 129 | if err != nil { | ||
| 130 | log.Printf("error reading robots.txt: %s", err) | ||
| 131 | robotstxtdata = nil | ||
| 132 | } else { | ||
| 133 | robotsdata, err = robotstxt.FromBytes(robotstxtdata) | ||
| 134 | if err != nil { | ||
| 135 | log.Printf("error reading robots.txt: %s", err) | ||
| 136 | robotstxtdata = nil | ||
| 137 | } | ||
| 138 | } | ||
| 139 | |||
| 140 | // | ||
| 141 | // Fonts | ||
| 142 | |||
| 143 | fontdataw, err := box.Find("iosevka-term-ss03-regular.woff") | ||
| 144 | if err != nil { | ||
| 145 | fontdataw = []byte{} | ||
| 146 | } | ||
| 147 | fontwAsset := fmt.Sprintf("/iosevka-term-ss03-regular-%x.woff", md5.Sum(fontdataw)) | ||
| 148 | |||
| 149 | fontdataw2, err := box.Find("iosevka-term-ss03-regular.woff2") | ||
| 150 | if err != nil { | ||
| 151 | fontdataw2 = []byte{} | ||
| 152 | } | ||
| 153 | fontw2Asset := fmt.Sprintf("/iosevka-term-ss03-regular-%x.woff2", md5.Sum(fontdataw2)) | ||
| 154 | |||
| 155 | propfontdataw, err := box.Find("iosevka-aile-regular.woff") | ||
| 156 | if err != nil { | ||
| 157 | propfontdataw = []byte{} | ||
| 158 | } | ||
| 159 | propfontwAsset := fmt.Sprintf("/iosevka-aile-regular-%x.woff", md5.Sum(propfontdataw)) | ||
| 160 | |||
| 161 | propfontdataw2, err := box.Find("iosevka-aile-regular.woff2") | ||
| 162 | if err != nil { | ||
| 163 | propfontdataw2 = []byte{} | ||
| 164 | } | ||
| 165 | propfontw2Asset := fmt.Sprintf("/iosevka-aile-regular-%x.woff2", md5.Sum(propfontdataw2)) | ||
| 166 | |||
| 167 | // | ||
| 168 | // Stylesheet | ||
| 169 | |||
| 170 | styledata, err := box.Find("style.css") | ||
| 171 | if err != nil { | ||
| 172 | styledata = []byte{} | ||
| 173 | } | ||
| 174 | styleAsset := fmt.Sprintf("/style-%x.css", md5.Sum(styledata)) | ||
| 175 | |||
| 176 | // | ||
| 177 | // JavaScript | ||
| 178 | |||
| 179 | jsdata, err := box.Find("main.js") | ||
| 180 | if err != nil { | ||
| 181 | jsdata = []byte{} | ||
| 182 | } | ||
| 183 | jsAsset := fmt.Sprintf("/main-%x.js", md5.Sum(jsdata)) | ||
| 184 | |||
| 185 | // | ||
| 186 | // Favicon | ||
| 187 | |||
| 188 | favicondata, err := box.Find("favicon.ico") | ||
| 189 | if err != nil { | ||
| 190 | favicondata = []byte{} | ||
| 191 | } | ||
| 192 | |||
| 193 | // | ||
| 194 | // Start page text | ||
| 195 | |||
| 196 | startpagedata, err := ioutil.ReadFile(startpagefile) | ||
| 197 | if err != nil { | ||
| 198 | startpagedata, err = box.Find("startpage.txt") | ||
| 199 | if err != nil { | ||
| 200 | startpagedata = []byte{} | ||
| 201 | } | ||
| 202 | } | ||
| 203 | startpagetext := string(startpagedata) | ||
| 204 | |||
| 205 | // | ||
| 206 | // | ||
| 207 | |||
| 208 | var allFiles []string | ||
| 209 | files, err := ioutil.ReadDir("./tpl") | ||
| 210 | if err != nil { | ||
| 211 | fmt.Println(err) | ||
| 212 | } | ||
| 213 | for _, file := range files { | ||
| 214 | filename := file.Name() | ||
| 215 | if strings.HasSuffix(filename, ".html") { | ||
| 216 | allFiles = append(allFiles, "./tpl/"+filename) | ||
| 217 | } | ||
| 218 | } | ||
| 219 | |||
| 220 | templates, err = template.ParseFiles(allFiles...) | ||
| 221 | |||
| 222 | // | ||
| 223 | |||
| 224 | funcMap := template.FuncMap{ | ||
| 225 | "safeHtml": func(s string) template.HTML { | ||
| 226 | return template.HTML(s) | ||
| 227 | }, | ||
| 228 | "safeCss": func(s string) template.CSS { | ||
| 229 | return template.CSS(s) | ||
| 230 | }, | ||
| 231 | "safeJs": func(s string) template.JS { | ||
| 232 | return template.JS(s) | ||
| 233 | }, | ||
| 234 | "HTMLEscape": func(s string) string { | ||
| 235 | return html.EscapeString(s) | ||
| 236 | }, | ||
| 237 | "split": strings.Split, | ||
| 238 | "last": func(s []string) string { | ||
| 239 | return s[len(s)-1] | ||
| 240 | }, | ||
| 241 | "pop": func(s []string) []string { | ||
| 242 | return s[:len(s)-1] | ||
| 243 | }, | ||
| 244 | "replace": func(pattern, output string, input interface{}) string { | ||
| 245 | var re = regexp.MustCompile(pattern) | ||
| 246 | var inputStr = fmt.Sprintf("%v", input) | ||
| 247 | return re.ReplaceAllString(inputStr, output) | ||
| 248 | }, | ||
| 249 | "trimLeftChar": func(s string) string { | ||
| 250 | for i := range s { | ||
| 251 | if i > 0 { | ||
| 252 | return s[i:] | ||
| 253 | } | ||
| 254 | } | ||
| 255 | return s[:0] | ||
| 256 | }, | ||
| 257 | "hasPrefix": func(s string, prefix string) bool { | ||
| 258 | return strings.HasPrefix(s, prefix) | ||
| 259 | }, | ||
| 260 | "title": func(s string) string { | ||
| 261 | return strings.Title(s) | ||
| 262 | }, | ||
| 263 | } | ||
| 264 | |||
| 265 | // | ||
| 266 | |||
| 267 | startpageTpl := templates.Lookup("startpage.html").Funcs(funcMap) | ||
| 268 | geminiTpl := templates.Lookup("gemini.html").Funcs(funcMap) | ||
| 269 | gopherTpl := templates.Lookup("gopher.html").Funcs(funcMap) | ||
| 270 | |||
| 271 | // | ||
| 272 | // | ||
| 273 | |||
| 274 | vips.Startup(&vips.Config{ | ||
| 275 | ConcurrencyLevel: vipsconcurrency, | ||
| 276 | }) | ||
| 277 | |||
| 278 | assets := AssetList{ | ||
| 279 | Style: styleAsset, | ||
| 280 | JS: jsAsset, | ||
| 281 | FontW: fontwAsset, | ||
| 282 | FontW2: fontw2Asset, | ||
| 283 | PropFontW: propfontwAsset, | ||
| 284 | PropFontW2: propfontw2Asset, | ||
| 285 | } | ||
| 286 | |||
| 287 | http.Handle("/", gziphandler.GzipHandler(DefaultHandler(startpageTpl, startpagetext, assets))) | ||
| 288 | http.Handle("/gopher/", gziphandler.GzipHandler(GopherHandler(gopherTpl, robotsdata, assets, robotsdebug))) | ||
| 289 | http.Handle("/gemini/", gziphandler.GzipHandler(GeminiHandler(geminiTpl, robotsdata, assets, robotsdebug))) | ||
| 290 | http.Handle("/robots.txt", gziphandler.GzipHandler(RobotsTxtHandler(robotstxtdata))) | ||
| 291 | http.Handle("/favicon.ico", gziphandler.GzipHandler(FaviconHandler(favicondata))) | ||
| 292 | http.Handle(styleAsset, gziphandler.GzipHandler(StyleHandler(styledata))) | ||
| 293 | http.Handle(jsAsset, gziphandler.GzipHandler(JavaScriptHandler(jsdata))) | ||
| 294 | http.HandleFunc(fontwAsset, FontHandler(false, fontdataw)) | ||
| 295 | http.HandleFunc(fontw2Asset, FontHandler(true, fontdataw2)) | ||
| 296 | http.HandleFunc(propfontwAsset, FontHandler(false, propfontdataw)) | ||
| 297 | http.HandleFunc(propfontw2Asset, FontHandler(true, propfontdataw2)) | ||
| 298 | //http.Handle("/assets/", http.StripPrefix("/assets/", http.FileServer(http.Dir("assets/")))) | ||
| 299 | |||
| 300 | return http.ListenAndServe(bind, nil) | ||
| 301 | } | ||
diff --git a/internal/port/tpl/gemini.html b/internal/port/tpl/gemini.html new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/internal/port/tpl/gemini.html | |||
diff --git a/internal/port/tpl/gopher.html b/internal/port/tpl/gopher.html new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/internal/port/tpl/gopher.html | |||
diff --git a/internal/port/tpl/startpage.html b/internal/port/tpl/startpage.html new file mode 100644 index 0000000..8482a6f --- /dev/null +++ b/internal/port/tpl/startpage.html | |||
| @@ -0,0 +1,120 @@ | |||
| 1 | <!doctype html> | ||
| 2 | <html> | ||
| 3 | <head> | ||
| 4 | <meta charset="utf-8"> | ||
| 5 | <meta name="viewport" content="width=device-width, initial-scale=1" /> | ||
| 6 | <title>{{ .Title }}{{ if ne .Protocol "startpage" }} - {{ .Protocol | title }} proxy{{ end }}</title> | ||
| 7 | <link rel="stylesheet" href="{{ .Assets.Style }}" /> | ||
| 8 | <style> | ||
| 9 | @font-face { | ||
| 10 | font-family: 'Iosevka Term SS03'; | ||
| 11 | font-style: normal; | ||
| 12 | font-weight: normal; | ||
| 13 | src: url('{{ .Assets.FontW2 }}') format('woff2'), | ||
| 14 | url('{{ .Assets.FontW }}') format('woff'); | ||
| 15 | } | ||
| 16 | @font-face { | ||
| 17 | font-family: 'Iosevka Aile'; | ||
| 18 | font-style: normal; | ||
| 19 | font-weight: normal; | ||
| 20 | src: url('{{ .Assets.PropFontW2 }}') format('woff2'), | ||
| 21 | url('{{ .Assets.PropFontW }}') format('woff'); | ||
| 22 | } | ||
| 23 | </style> | ||
| 24 | </head> | ||
| 25 | <body class="{{ if not .Lines }}is-plain{{ end }}"> | ||
| 26 | <header class="header header-base"> | ||
| 27 | <div class="location"> | ||
| 28 | <a class="location__prefix">{{ .Protocol }}://</a><a class="location__prefix location__prefix--mobile">://</a> | ||
| 29 | |||
| 30 | {{- if .URI -}} | ||
| 31 | {{- $page := . -}} | ||
| 32 | {{- $href := printf "/%s" .Protocol -}} | ||
| 33 | {{- $uriParts := split .URI "/" -}} | ||
| 34 | |||
| 35 | {{- $uriLast := $uriParts | last -}} | ||
| 36 | {{- $uriParts = $uriParts | pop -}} | ||
| 37 | {{- if eq $uriLast "" -}} | ||
| 38 | {{- $uriLast = $uriParts | last -}} | ||
| 39 | {{- $uriParts = $uriParts | pop -}} | ||
| 40 | {{- end -}} | ||
| 41 | |||
| 42 | {{- range $i, $part := $uriParts -}} | ||
| 43 | {{- if and (eq $page.Protocol "gopher") (eq $i 1) -}} | ||
| 44 | {{- $href = printf "%s/1" $href -}} | ||
| 45 | {{- $part = $part | trimLeftChar -}} | ||
| 46 | {{- if not (eq $part "") -}} | ||
| 47 | {{- $href = printf "%s/%s" $href $part -}} | ||
| 48 | <span class="location__slash">/</span><a href="{{ $href }}/" class="location__uripart">{{ $part }}</a> | ||
| 49 | {{- end -}} | ||
| 50 | {{- else -}} | ||
| 51 | {{- $href = printf "%s/%s" $href . -}} | ||
| 52 | {{- if ne $i 0 -}} | ||
| 53 | <span class="location__slash">/</span> | ||
| 54 | {{- end -}} | ||
| 55 | <a href="{{ $href }}/" class="location__uripart">{{ . }}</a> | ||
| 56 | {{- end -}} | ||
| 57 | {{- end -}} | ||
| 58 | {{- if ne (len $uriParts) 0 -}} | ||
| 59 | <span class="location__slash">/</span> | ||
| 60 | {{- end -}} | ||
| 61 | {{- if and (eq $page.Protocol "gopher") (eq (len $uriParts) 1) -}} | ||
| 62 | {{- $uriLast = $uriLast | trimLeftChar -}} | ||
| 63 | {{- end -}} | ||
| 64 | <span class="location__uripart">{{ $uriLast }}</span> | ||
| 65 | {{- end -}} | ||
| 66 | </div> | ||
| 67 | <div class="actions"> | ||
| 68 | {{- if and (not .Lines) (not .Error) (eq .Protocol "gopher") -}} | ||
| 69 | <div class="action"><a href="/gopher/{{ .URI | replace "^([^/]*)/0" "$1/9" }}">View raw</a></div> | ||
| 70 | {{- end -}} | ||
| 71 | <div class="action"><button class="settings-btn">Settings</button></div> | ||
| 72 | </div> | ||
| 73 | </header> | ||
| 74 | <main class="wrap"> | ||
| 75 | <pre class="content content--has-monospace-font{{ if .Lines }} content--has-type-annotations{{ end }}"> | ||
| 76 | {{- if .Lines -}} | ||
| 77 | {{- $content := "" -}} | ||
| 78 | {{- range .Lines -}} | ||
| 79 | {{- if ne $content "" -}} | ||
| 80 | {{- $content = printf "%s\n" $content -}} | ||
| 81 | {{- end -}} | ||
| 82 | {{- if .Link -}} | ||
| 83 | {{- $content = printf "%s%s" $content (printf "<span class=\"type-annotation\">%s </span><a class=\"link link--%s\" href=\"%s\">%s</a>" .Type .Type .Link (.Text | HTMLEscape)) -}} | ||
| 84 | {{- else -}} | ||
| 85 | {{- $content = printf "%s%s" $content (printf "<span class=\"type-annotation\"> </span>%s" (.Text | HTMLEscape)) -}} | ||
| 86 | {{- end -}} | ||
| 87 | {{- end -}} | ||
| 88 | {{- $content | safeHtml -}} | ||
| 89 | {{- else -}} | ||
| 90 | {{- .RawText -}} | ||
| 91 | {{- end -}} | ||
| 92 | </pre> | ||
| 93 | </main> | ||
| 94 | <aside class="modal modal--settings"> | ||
| 95 | <div class="modal__content"> | ||
| 96 | <header class="modal__head header-base"> | ||
| 97 | <h1 class="modal__title">Settings</h1> | ||
| 98 | <button class="modal__close-btn">Close</button> | ||
| 99 | </header> | ||
| 100 | <div class="setting setting--word-wrap"> | ||
| 101 | <strong class="setting__label">Wrap wide content</strong> | ||
| 102 | <button class="setting__value">[N/A]</button> | ||
| 103 | </div> | ||
| 104 | <div class="setting setting--monospace-font"> | ||
| 105 | <strong class="setting__label">Monospace font</strong> | ||
| 106 | <button class="setting__value">[N/A]</button> | ||
| 107 | </div> | ||
| 108 | <div class="setting setting--image-previews"> | ||
| 109 | <strong class="setting__label">Image thumbnails</strong> | ||
| 110 | <button class="setting__value">[N/A]</button> | ||
| 111 | </div> | ||
| 112 | <div class="setting setting--clickable-plain-links"> | ||
| 113 | <strong class="setting__label">Clickable links in text files</strong> | ||
| 114 | <button class="setting__value">[N/A]</button> | ||
| 115 | </div> | ||
| 116 | </div> | ||
| 117 | </aside> | ||
| 118 | <script src="{{ .Assets.JS }}"></script> | ||
| 119 | </body> | ||
| 120 | </html> | ||
