├── testdata ├── page │ ├── page │ └── index.html ├── prod │ ├── about.html │ ├── index.html │ ├── tags │ │ ├── a │ │ │ ├── index.html │ │ │ └── index.xml │ │ └── index.html │ ├── index.xml │ ├── posts │ │ ├── 1 │ │ │ └── index.html │ │ ├── 2 │ │ │ └── index.html │ │ ├── 4 │ │ │ └── index.html │ │ ├── index.xml │ │ └── index.html │ ├── extra_tag.html │ ├── .htaccess │ └── ignored_css.html └── staging │ ├── about.html │ ├── tags │ ├── index.html │ ├── a │ │ ├── index.html │ │ └── index.xml │ └── b │ │ ├── index.html │ │ └── index.xml │ ├── other.xml │ ├── index.xml │ ├── posts │ ├── 1 │ │ └── index.html │ ├── 2 │ │ └── index.html │ ├── 3 │ │ └── index.html │ ├── 4 │ │ └── index.html │ ├── index.xml │ └── index.html │ ├── index.html │ ├── .htaccess │ ├── extra_tag.html │ └── ignored_css.html ├── codecov.yml ├── .gitignore ├── SOURCE.txt ├── .github ├── dependabot.yml └── workflows │ ├── codecov.yml │ ├── build.yml │ ├── golangci-lint.yml │ └── release.yml ├── go.mod ├── config.toml ├── websub_test.go ├── go.sum ├── version_generate.go ├── websub.go ├── CHANGELOG.md ├── README.md ├── main_test.go ├── main.go └── LICENSE /testdata/page/page: -------------------------------------------------------------------------------- 1 | ../page -------------------------------------------------------------------------------- /testdata/prod/about.html: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /testdata/prod/index.html: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /testdata/staging/about.html: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /testdata/prod/tags/a/index.html: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /testdata/prod/tags/index.html: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /testdata/staging/tags/index.html: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /testdata/staging/tags/a/index.html: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /testdata/staging/tags/b/index.html: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /testdata/prod/index.xml: -------------------------------------------------------------------------------- 1 | old contents 2 | -------------------------------------------------------------------------------- /testdata/staging/other.xml: -------------------------------------------------------------------------------- 1 | new file 2 | -------------------------------------------------------------------------------- /testdata/prod/posts/index.xml: -------------------------------------------------------------------------------- 1 | old contents 2 | -------------------------------------------------------------------------------- /testdata/prod/tags/a/index.xml: -------------------------------------------------------------------------------- 1 | same contents 2 | -------------------------------------------------------------------------------- /testdata/staging/index.xml: -------------------------------------------------------------------------------- 1 | same contents 2 | -------------------------------------------------------------------------------- /codecov.yml: -------------------------------------------------------------------------------- 1 | comment: 2 | require_changes: true 3 | -------------------------------------------------------------------------------- /testdata/staging/posts/index.xml: -------------------------------------------------------------------------------- 1 | same contents 2 | -------------------------------------------------------------------------------- /testdata/staging/tags/a/index.xml: -------------------------------------------------------------------------------- 1 | same contents 2 | -------------------------------------------------------------------------------- /testdata/staging/tags/b/index.xml: -------------------------------------------------------------------------------- 1 | same contents 2 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .*.swp 2 | /static-webmentions 3 | /release/ 4 | /debian.changelog 5 | -------------------------------------------------------------------------------- /testdata/staging/index.html: -------------------------------------------------------------------------------- 1 | something 2 | -------------------------------------------------------------------------------- /testdata/staging/posts/index.html: -------------------------------------------------------------------------------- 1 | something 2 | -------------------------------------------------------------------------------- /testdata/staging/posts/4/index.html: -------------------------------------------------------------------------------- 1 | something 2 | -------------------------------------------------------------------------------- /SOURCE.txt: -------------------------------------------------------------------------------- 1 | The source code for this software is available at 2 | https://evgenykuznetsov.org/go/static-webmentions 3 | -------------------------------------------------------------------------------- /testdata/prod/extra_tag.html: -------------------------------------------------------------------------------- 1 | something 2 |
nothing yet
3 | 4 | -------------------------------------------------------------------------------- /testdata/staging/.htaccess: -------------------------------------------------------------------------------- 1 | ErrorDocument 404 /404.html 2 | 3 | Redirect 404 "/post/somepost/" 4 | Redirect 410 "/post/veryoldpost" 5 | -------------------------------------------------------------------------------- /testdata/staging/extra_tag.html: -------------------------------------------------------------------------------- 1 | something 2 |
this changed
3 | 4 | -------------------------------------------------------------------------------- /testdata/prod/posts/4/index.html: -------------------------------------------------------------------------------- 1 | Some text, and there's a link, too! 2 | -------------------------------------------------------------------------------- /testdata/prod/posts/index.html: -------------------------------------------------------------------------------- 1 | Some text, and there's a link, too! 2 | -------------------------------------------------------------------------------- /testdata/prod/.htaccess: -------------------------------------------------------------------------------- 1 | ErrorDocument 404 /404.html 2 | 3 | Redirect 410 "/about.html" 4 | Redirect 404 "/post/somepost/" 5 | Redirect 410 "/post/veryoldpost" 6 | -------------------------------------------------------------------------------- /testdata/prod/ignored_css.html: -------------------------------------------------------------------------------- 1 |
something with a link 2 |
no comments yet
3 |
4 | -------------------------------------------------------------------------------- /testdata/staging/ignored_css.html: -------------------------------------------------------------------------------- 1 |
something with a link 2 |
comment from some person
3 |
4 | -------------------------------------------------------------------------------- /.github/dependabot.yml: -------------------------------------------------------------------------------- 1 | version: 2 2 | updates: 3 | - package-ecosystem: "gomod" 4 | directory: "/" 5 | schedule: 6 | interval: "daily" 7 | - package-ecosystem: "github-actions" 8 | directory: "/" 9 | schedule: 10 | interval: "daily" 11 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module evgenykuznetsov.org/go/static-webmentions 2 | 3 | go 1.15 4 | 5 | require ( 6 | github.com/BurntSushi/toml v1.3.2 7 | github.com/PuerkitoBio/goquery v1.8.0 8 | github.com/udhos/equalfile v0.3.0 9 | willnorris.com/go/webmention v0.0.0-20220108183051-4a23794272f0 10 | ) 11 | -------------------------------------------------------------------------------- /.github/workflows/codecov.yml: -------------------------------------------------------------------------------- 1 | name: codecov 2 | on: [push] 3 | jobs: 4 | codecov: 5 | name: codecov 6 | runs-on: ubuntu-latest 7 | env: 8 | GOPROXY: direct 9 | steps: 10 | - uses: actions/checkout@v3 11 | - uses: actions/setup-go@v4 12 | with: 13 | go-version: 1.14 14 | - name: cache 15 | uses: actions/cache@v3 16 | with: 17 | path: | 18 | ~/.cache/go-build 19 | ~/go/pkg/mod 20 | key: | 21 | ${{ runner.os }}-build-${{ hashFiles('**/go.mod') }}-${{ hashFiles('**/go.sum') }} 22 | restore-keys: | 23 | ${{ runner.os }}-build-${{ hashFiles('**/go.mod') }}- 24 | ${{ runner.os }}-build- 25 | ${{ runner.os }}- 26 | - name: vet 27 | run: | 28 | go vet ./... 29 | - name: generate report 30 | run: | 31 | go test -v -coverprofile=coverage.txt -covermode=atomic ./... 32 | - name: upload coverage report 33 | uses: codecov/codecov-action@v3 34 | -------------------------------------------------------------------------------- /.github/workflows/build.yml: -------------------------------------------------------------------------------- 1 | name: build 2 | on: 3 | push: 4 | branches: 5 | - "master" 6 | tags-ignore: 7 | - "*" 8 | 9 | jobs: 10 | pre_release: 11 | runs-on: ubuntu-latest 12 | env: 13 | GOPROXY: direct 14 | steps: 15 | - uses: actions/checkout@v3 16 | with: 17 | fetch-depth: 0 18 | - uses: actions/setup-go@v4 19 | with: 20 | go-version: 1.16 21 | - name: cache 22 | uses: actions/cache@v3 23 | with: 24 | path: | 25 | ~/.cache/go-build 26 | ~/go/pkg/mod 27 | key: | 28 | ${{ runner.os }}-build-${{ hashFiles('**/go.mod') }}-${{ hashFiles('**/go.sum') }} 29 | restore-keys: | 30 | ${{ runner.os }}-build-${{ hashFiles('**/go.mod') }}- 31 | ${{ runner.os }}-build- 32 | ${{ runner.os }}- 33 | 34 | - name: build packages 35 | run: | 36 | bash <(VER=$(go generate); for ARCH in amd64 386 arm arm64; do GOARCH=$ARCH CGO_ENABLED=0 go build -ldflags "-s -w -buildid= -X main.version=$VER"; done) 37 | -------------------------------------------------------------------------------- /.github/workflows/golangci-lint.yml: -------------------------------------------------------------------------------- 1 | name: golangci-lint 2 | on: 3 | push: 4 | tags: 5 | - v* 6 | branches: 7 | - master 8 | - main 9 | pull_request: 10 | jobs: 11 | golangci: 12 | name: lint 13 | runs-on: ubuntu-latest 14 | steps: 15 | - uses: actions/checkout@v3 16 | - name: golangci-lint 17 | uses: golangci/golangci-lint-action@v3 18 | with: 19 | # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version 20 | version: latest 21 | 22 | # Optional: working directory, useful for monorepos 23 | # working-directory: somedir 24 | 25 | # Optional: golangci-lint command line arguments. 26 | # args: --issues-exit-code=0 27 | 28 | # Optional: show only new issues if it's a pull request. The default value is `false`. 29 | # only-new-issues: true 30 | 31 | # Optional: if set to true then the action will use pre-installed Go. 32 | # skip-go-installation: true 33 | 34 | # Optional: if set to true then the action don't cache or restore ~/go/pkg. 35 | # skip-pkg-cache: true 36 | 37 | # Optional: if set to true then the action don't cache or restore ~/.cache/go-build. 38 | # skip-build-cache: true 39 | -------------------------------------------------------------------------------- /config.toml: -------------------------------------------------------------------------------- 1 | baseurl = "https://my-awesome.site" 2 | 3 | [webmentions] 4 | newDir = "testdata/staging" # the directory where newly created site is 5 | oldDir = "testdata/prod/" # the directory where old (or current) site is 6 | webmentionsFile = "mentions.json" # the file to store pending webmentions in 7 | 8 | concurrentFiles = 2 # number of files to process simultaneously, defaults to 1 9 | concurrentRequests = 5 # number of requests that can be simultaneously sent to the same host when sending webmentions 10 | 11 | ## by default, only the `h-entry` is checked for changes; you can add other parts of a page here 12 | ## using CSS selectors 13 | alsoWatch = [ 14 | "#webmentions", 15 | ".comments", 16 | ] 17 | 18 | ## pages that should not be considered as webmention sources 19 | excludeSources = [ 20 | "/tags/*", # only trailing * are supported at the moment 21 | "/posts", # this only excludes /posts/index.html, not /posts/somepost/ 22 | "/", # same as "/index.html" 23 | ] 24 | 25 | ## addresses that we don't want to send webmentions to 26 | excludeDestinations = [ 27 | "https://my-awesome.site", # this still allows mentioning pages other than the homepage 28 | "mailto:", # schemes are accepted 29 | "/tags" # relative paths for our own site include all the pages under that directory 30 | ] 31 | 32 | ## CSS selectors that we don't want to look into for webmention targets 33 | excludeSelectors = [ 34 | "#comments", 35 | ] 36 | 37 | [params] 38 | websubHub = ["https://pubsubhubbub.superfeedr.com/","https://thehub.pubsub"] # if this is present, will look for changes in XML files and notify the hub(s) 39 | feedFiles = ["index.xml", "other.xml"] 40 | -------------------------------------------------------------------------------- /websub_test.go: -------------------------------------------------------------------------------- 1 | // Copyright (C) 2020 Evgeny Kuznetsov (evgeny@kuznetsov.md) 2 | // 3 | // This program is free software: you can redistribute it and/or modify 4 | // it under the terms of the GNU General Public License as published by 5 | // the Free Software Foundation, either version 3 of the License, or 6 | // (at your option) any later version. 7 | // 8 | // This program is distributed in the hope that it will be useful, 9 | // but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | // GNU General Public License for more details. 12 | // 13 | // You should have received a copy of the GNU General Public License 14 | // along with this program. If not, see . 15 | 16 | package main 17 | 18 | import ( 19 | "bytes" 20 | "net/http" 21 | "net/http/httptest" 22 | "path/filepath" 23 | "testing" 24 | ) 25 | 26 | func TestFindFeeds(t *testing.T) { 27 | var cfg config 28 | cfg.baseURL = "https://my.site/" 29 | cfg.oldDir = filepath.Join("testdata", "prod") 30 | cfg.newDir = filepath.Join("testdata", "staging") 31 | cfg.feedFiles = []string{"index.xml", "other.xml"} 32 | 33 | want := []string{ 34 | "https://my.site/index.xml", 35 | "https://my.site/other.xml", 36 | "https://my.site/posts/index.xml", 37 | "https://my.site/tags/b/index.xml", 38 | } 39 | 40 | got := findFeeds(cfg) 41 | 42 | if !stringSlicesEqual(want, got) { 43 | t.Fatalf("want:\n%s\ngot:\n%s\n", want, got) 44 | } 45 | } 46 | 47 | func TestPing(t *testing.T) { 48 | buf := new(bytes.Buffer) 49 | ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 50 | w.WriteHeader(200) 51 | _, _ = buf.ReadFrom(r.Body) 52 | })) 53 | defer ts.Close() 54 | 55 | tests := map[string]struct { 56 | feeds []string 57 | result string 58 | }{ 59 | "empty": {[]string{}, ""}, 60 | "non-empty": {[]string{"one", "two"}, "hub.mode=publish&hub.url=onehub.mode=publish&hub.url=two"}, 61 | } 62 | 63 | for name, tc := range tests { 64 | t.Run(name, func(t *testing.T) { 65 | buf.Reset() 66 | ping(ts.URL, tc.feeds) 67 | got := buf.String() 68 | if tc.result != got { 69 | t.Fatalf("want %v, got: %v", tc.result, got) 70 | } 71 | }) 72 | } 73 | } 74 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8= 2 | github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= 3 | github.com/PuerkitoBio/goquery v1.8.0 h1:PJTF7AmFCFKk1N6V6jmKfrNH9tV5pNE6lZMkG0gta/U= 4 | github.com/PuerkitoBio/goquery v1.8.0/go.mod h1:ypIiRMtY7COPGk+I/YbZLbxsxn9g5ejnI2HSMtkjZvI= 5 | github.com/andybalholm/cascadia v1.3.1 h1:nhxRkql1kdYCc8Snf7D5/D3spOX+dBgjA6u8x004T2c= 6 | github.com/andybalholm/cascadia v1.3.1/go.mod h1:R4bJ1UQfqADjvDa4P6HZHLh/3OxWWEqc0Sk8XGwHqvA= 7 | github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ= 8 | github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= 9 | github.com/udhos/equalfile v0.3.0 h1:KhG4xhhkittrgIV/ekHtpEPh7MLxtbjm6kLEwp5Dlbg= 10 | github.com/udhos/equalfile v0.3.0/go.mod h1:1LOX9HjdFMke7ryP3IPby09FkswyY5KzhhsT37wLz/Y= 11 | github.com/wsxiaoys/terminal v0.0.0-20160513160801-0940f3fc43a0/go.mod h1:IXCdmsXIht47RaVFLEdVnh1t+pgYtTAhQGj73kz+2DM= 12 | golang.org/x/net v0.0.0-20210916014120-12bc252f5db8/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= 13 | golang.org/x/net v0.0.0-20211020060615-d418f374d309 h1:A0lJIi+hcTR6aajJH4YqKWwohY4aW9RO7oRMcdv+HKI= 14 | golang.org/x/net v0.0.0-20211020060615-d418f374d309/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= 15 | golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 16 | golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 17 | golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= 18 | golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= 19 | golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 20 | golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4= 21 | golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= 22 | willnorris.com/go/webmention v0.0.0-20220108183051-4a23794272f0 h1:V5+O+YZHchEwu6ZmPcqT1dQ+mHgE356Q+w9SVOQ+QZg= 23 | willnorris.com/go/webmention v0.0.0-20220108183051-4a23794272f0/go.mod h1:DgeruqKIsZtcDXVXNbBHa0YYEm88oAnK7PahkDtuCvw= 24 | -------------------------------------------------------------------------------- /.github/workflows/release.yml: -------------------------------------------------------------------------------- 1 | name: release 2 | on: 3 | push: 4 | tags: 5 | - "v*" 6 | 7 | jobs: 8 | release: 9 | runs-on: ubuntu-latest 10 | env: 11 | GOPROXY: direct 12 | steps: 13 | - uses: actions/checkout@v3 14 | with: 15 | fetch-depth: 0 16 | - uses: actions/setup-go@v4 17 | with: 18 | go-version: 1.16 19 | 20 | - name: install changelog 21 | run: | 22 | go install evgenykuznetsov.org/go/changelog/cmd/changelog@latest 23 | 24 | - uses: ruby/setup-ruby@v1 25 | with: 26 | ruby-version: 2.7 27 | bundler-cache: true 28 | 29 | - name: install fpm 30 | run: gem install fpm 31 | 32 | - name: build packages 33 | run: | 34 | git fetch --tags --force 35 | mkdir release 36 | changelog -n "Evgeny Kuznetsov" -e "evgeny@kuznetsov.md" -p "static-webmentions" CHANGELOG.md 37 | bash <(VER=$(go generate); for ARCH in amd64 386 arm arm64; do GOARCH=$ARCH CGO_ENABLED=0 go build -trimpath -ldflags "-s -w -buildid= -X main.version=$VER"; tar -czf release/static-webmentions-$VER-linux-$ARCH.tar.gz static-webmentions LICENSE README.md CHANGELOG.md SOURCE.txt; fpm -t deb -s dir -a $ARCH -n static-webmentions -v ${VER%+*} -m "Evgeny Kuznetsov " --deb-changelog debian.changelog --license GPL-3 --deb-priority optional --url https://evgenykuznetsov.org/go/static-webmentions --category net --vendor "Evgeny Kuznetsov " --description "A tool to send webmentions from a static website." LICENSE=/usr/share/doc/static-webmentions/ README.md=/usr/share/doc/static-webmentions/ SOURCE.txt=/usr/share/doc/static-webmentions static-webmentions=/usr/bin/ >/dev/null; mv *.deb release/; done) 38 | cd release 39 | fpm -s deb -t deb -a i386 *386.deb 40 | rm *_386.deb 41 | fpm -s deb -t deb -a armel *arm.deb 42 | rm *arm.deb 43 | - name: release 44 | uses: marvinpinto/action-automatic-releases@v1.2.1 45 | with: 46 | repo_token: "${{ secrets.GITHUB_TOKEN }}" 47 | prerelease: false 48 | files: "release/*" 49 | 50 | - name: trigger repository update 51 | uses: appleboy/ssh-action@v0.1.10 52 | with: 53 | host: evgkuz.org 54 | username: evgeny 55 | key: ${{ secrets.SSH_KEY }} 56 | script: static-webmentions 57 | -------------------------------------------------------------------------------- /version_generate.go: -------------------------------------------------------------------------------- 1 | // Copyright (C) 2019-2020 Evgeny Kuznetsov (evgeny@kuznetsov.md) 2 | // 3 | // This program is free software: you can redistribute it and/or modify 4 | // it under the terms of the GNU General Public License as published by 5 | // the Free Software Foundation, either version 3 of the License, or 6 | // (at your option) any later version. 7 | // 8 | // This program is distributed in the hope that it will be useful, 9 | // but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | // GNU General Public License for more details. 12 | // 13 | // You should have received a copy of the GNU General Public License 14 | // along with this program. If not, see . 15 | 16 | //+build ignore 17 | 18 | package main 19 | 20 | import ( 21 | "bytes" 22 | "fmt" 23 | "os/exec" 24 | "regexp" 25 | ) 26 | 27 | func main() { 28 | ver := getVersion() 29 | fmt.Println(ver) 30 | } 31 | 32 | func getVersion() string { 33 | desc, err1 := getString("git", "describe", "--always", "--dirty") 34 | br, err2 := getString("git", "symbolic-ref", "--short", "-q", "HEAD") 35 | if err1 == nil && (br == "" || err2 == nil) { 36 | return parseVersion(desc, br) 37 | } 38 | return "unknown" 39 | } 40 | 41 | func parseVersion(desc, branch string) string { 42 | descRe := regexp.MustCompile(`^v?(?P0|[1-9]\d*)\.(?P0|[1-9]\d*)\.(?P0|[1-9]\d*)(?:-(?P(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))??(?:\-(?P0|[1-9]\d*)\-(?Pg[0-9a-f]{5,15}))?(?:\-(?Pdirty))??$`) 43 | if !descRe.MatchString(desc) { 44 | return "unknown" 45 | } 46 | 47 | ver := descRe.ReplaceAllString(desc, "${major}.${minor}.${patch}") 48 | pre := descRe.ReplaceAllString(desc, "${prerelease}") 49 | after := descRe.ReplaceAllString(desc, "${after}") 50 | commit := descRe.ReplaceAllString(desc, "${commit}") 51 | dirty := descRe.ReplaceAllString(desc, "${dirty}") 52 | 53 | if pre != "" { 54 | ver = fmt.Sprintf("%s-%s", ver, pre) 55 | } 56 | 57 | if (after != "" || dirty != "") && branch != "master" && branch != "" { 58 | ver = fmt.Sprintf("%s.%s", ver, branch) 59 | } 60 | 61 | if after != "" { 62 | ver = fmt.Sprintf("%s.%s", ver, after) 63 | } 64 | 65 | if dirty != "" { 66 | ver = fmt.Sprintf("%s.%s", ver, "dirty") 67 | } 68 | 69 | if commit != "" { 70 | ver = fmt.Sprintf("%s+%s", ver, commit) 71 | } 72 | 73 | return ver 74 | } 75 | 76 | func getString(c string, a ...string) (string, error) { 77 | cmd := exec.Command(c, a...) 78 | b, err := cmd.CombinedOutput() 79 | return string(bytes.TrimSpace(b)), err 80 | } 81 | -------------------------------------------------------------------------------- /websub.go: -------------------------------------------------------------------------------- 1 | // Copyright (C) 2020 Evgeny Kuznetsov (evgeny@kuznetsov.md) 2 | // 3 | // This program is free software: you can redistribute it and/or modify 4 | // it under the terms of the GNU General Public License as published by 5 | // the Free Software Foundation, either version 3 of the License, or 6 | // (at your option) any later version. 7 | // 8 | // This program is distributed in the hope that it will be useful, 9 | // but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | // GNU General Public License for more details. 12 | // 13 | // You should have received a copy of the GNU General Public License 14 | // along with this program. If not, see . 15 | 16 | package main 17 | 18 | import ( 19 | "fmt" 20 | "net/http" 21 | "net/url" 22 | "os" 23 | "path/filepath" 24 | "strings" 25 | 26 | "github.com/udhos/equalfile" 27 | ) 28 | 29 | func ping(hub string, feeds []string) { 30 | if len(feeds) == 0 { 31 | return 32 | } 33 | 34 | u, _ := url.ParseRequestURI(hub) 35 | urlStr := u.String() 36 | 37 | for _, feed := range feeds { 38 | data := url.Values{} 39 | data.Set("hub.mode", "publish") 40 | data.Set("hub.url", feed) 41 | 42 | client := &http.Client{} 43 | r, _ := http.NewRequest("POST", urlStr, strings.NewReader(data.Encode())) // URL-encoded payload 44 | r.Header.Add("Content-Type", "application/x-www-form-urlencoded") 45 | 46 | fmt.Printf("pinging %s for: %s ... ", hub, feed) 47 | resp, err := client.Do(r) 48 | if err != nil { 49 | fmt.Printf("error: %v\n", err) 50 | } else { 51 | fmt.Println(resp.Status) 52 | } 53 | } 54 | } 55 | 56 | func findFeeds(conf config) []string { 57 | var files []string 58 | _ = filepath.Walk(conf.newDir, 59 | func(path string, info os.FileInfo, err error) error { 60 | if err != nil { 61 | return nil 62 | } 63 | 64 | relPath := strings.TrimPrefix(path, strings.TrimSuffix(conf.newDir, "/")+"/") 65 | 66 | if !suffixInArray(relPath, conf.feedFiles) { 67 | return nil 68 | } 69 | 70 | if info.IsDir() { 71 | return nil 72 | } 73 | 74 | if !feedChanged(path, filepath.Join(conf.oldDir, relPath)) { 75 | return nil 76 | } 77 | 78 | files = append(files, relPath) 79 | return nil 80 | }) 81 | var feeds []string 82 | for _, file := range files { 83 | feed := postSlash(conf.baseURL) + strings.TrimPrefix(file, "/") 84 | feeds = append(feeds, feed) 85 | } 86 | return feeds 87 | } 88 | 89 | func feedChanged(newFile, oldFile string) bool { 90 | cmp := equalfile.New(nil, equalfile.Options{}) // compare using single mode 91 | r1, err := os.Open(newFile) 92 | if err != nil { 93 | return false 94 | } 95 | defer r1.Close() 96 | r2, err := os.Open(oldFile) 97 | if err != nil { 98 | return true 99 | } 100 | defer r2.Close() 101 | 102 | equal, err := cmp.CompareReader(r1, r2) 103 | if err != nil { 104 | return true 105 | } 106 | return !equal 107 | } 108 | 109 | func suffixInArray(s string, a []string) bool { 110 | for _, e := range a { 111 | if strings.HasSuffix(s, e) { 112 | return true 113 | } 114 | } 115 | return false 116 | } 117 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # Changelog 2 | All notable changes to this project will be documented in this file. 3 | 4 | The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), 5 | and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). 6 | 7 | ## [Unreleased] 8 | 9 | ## [0.7.3] - 2022-02-11 10 | ### Fixed 11 | - lockout when ConcurrentRequests < 1 12 | - avoid data race when rate limiting the requests 13 | 14 | ## [0.7.2] - 2022-01-08 15 | ### Fixed 16 | - panic on malformed headers (dependency) 17 | - missing linebreak on websub error 18 | 19 | ## [0.7.1] - 2021-12-17 20 | ### Fixed 21 | - lack of linebreak at the end of a 201 notification 22 | 23 | ## [0.7.0] - 2021-12-14 24 | ### Added 25 | - Location header value output when getting a 201 26 | 27 | ## [0.6.2] - 2021-11-15 28 | ### Changed 29 | - updated dependencies 30 | - bumped Go to 1.16 31 | 32 | ## [0.6.1] - 2021-10-06 33 | ### Fixed 34 | - confusing console output when sending webmentions concurrently 35 | 36 | ## [0.6.0] - 2021-10-06 37 | ### Added 38 | - an option to process files concurrently 39 | - concurrent webmentions sending 40 | 41 | ### Fixed 42 | - not processing empty line as a valid endpoint address 43 | - errors in relative endpoint URL resolving when being redirected first 44 | 45 | ## [0.5.0] - 2021-10-04 46 | ### Added 47 | - an option to specify CSS selectors that would be included in changes discovery along with the existing `h-entry` 48 | - an option to specify CSS selectors that would be excluded from gathering targets when sending webmentions 49 | 50 | ## [0.4.0] - 2021-10-03 51 | ### Changed 52 | - bumped Go to 1.15 53 | 54 | ### Fixed 55 | - webmentions not re-sent for the links that were removed from a page 56 | 57 | ## [0.3.2] - 2020-10-30 58 | - maintenance release, updated dependencies 59 | 60 | ## [0.3.1] - 2020-08-09 61 | ### Fixed 62 | - hopefully fixed occasional panic by updating dependencies 63 | 64 | ## [0.3.0] - 2020-06-03 65 | ### Breaking 66 | - require full path for exclusions in config 67 | - don't bother with .htaccess, rely on tombstones instead for detecting gone pages 68 | 69 | ### Fixed 70 | - actually re-send webmentions for gone pages 71 | - detect un-gone pages 72 | 73 | ## [0.2.1] - 2020-05-11 74 | ### Added 75 | - support non-standart feed filenames 76 | 77 | ### Fixed 78 | - websub pinger would panic on response error 79 | 80 | ## [0.2.0] - 2020-05-06 81 | ### Added 82 | - support for multiple WebSub hubs 83 | 84 | ### Fixed 85 | - trying to send webmentions when endpoint not found 86 | - sending websub ping for multiple feeds at once 87 | 88 | ## [0.1.3] - 2020-04-02 89 | ### Fixed 90 | - links with fragments were not excluded 91 | 92 | ## [0.1.2] - 2020-04-01 93 | ### Added 94 | - finding XML feeds and pinging WebSub hub on changes 95 | 96 | ## [0.1.1] - 2020-03-29 97 | ### Fixed 98 | - errors if symlinks to directories are present 99 | 100 | ## [0.1.0] - 2020-03-29 101 | *initial release* 102 | 103 | [Unreleased]: https://github.com/nekr0z/static-webmentions/compare/v0.7.3..HEAD 104 | [0.7.3]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.7.3 105 | [0.7.2]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.7.2 106 | [0.7.1]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.7.1 107 | [0.7.0]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.7.0 108 | [0.6.2]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.6.2 109 | [0.6.1]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.6.1 110 | [0.6.0]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.6.0 111 | [0.5.0]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.5.0 112 | [0.4.0]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.4.0 113 | [0.3.2]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.3.2 114 | [0.3.1]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.3.1 115 | [0.3.0]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.3.0 116 | [0.2.1]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.2.1 117 | [0.2.0]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.2.0 118 | [0.1.3]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.1.3 119 | [0.1.2]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.1.2 120 | [0.1.1]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.1.1 121 | [0.1.0]: https://github.com/nekr0z/static-webmentions/releases/tag/v0.1.0 122 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # static-webmentions 2 | a tool to send webmentions from a static website 3 | 4 | ![Build Status](https://github.com/nekr0z/static-webmentions/actions/workflows/build.yml/badge.svg) [![codecov](https://codecov.io/gh/nekr0z/static-webmentions/branch/master/graph/badge.svg)](https://codecov.io/gh/nekr0z/static-webmentions) [![Go Report Card](https://goreportcard.com/badge/evgenykuznetsov.org/go/static-webmentions)](https://goreportcard.com/report/evgenykuznetsov.org/go/static-webmentions) 5 | 6 | ##### Table of Contents 7 | * [Why](#why) 8 | * [How to use](#how) 9 | * [Configuration](#configuration) 10 | * [Automation](#automating-your-webmentions) 11 | * [Development](#development) 12 | * [Credits](#credits) 13 | 14 | #### Help `static-webmentions` get better! 15 | Join the [development](#development) (or just [buy me a coffee](https://www.buymeacoffee.com/nekr0z), that helps, too). 16 | 17 | ## Why 18 | Sending [webmentions](https://en.wikipedia.org/wiki/Webmention) is relatively easy if you use a CMS. If, however, your site is built using a static site generator like [Hugo](https://gohugo.io/), sending webmentions is not as straightforward. 19 | 20 | This tool allows you to do just that, and with some effort you can even automate your outgoing webmentions. 21 | 22 | ## How 23 | The way `static-webmentions` works is by comparing two versions of a static site (residing in two separate directories), figuring out what new webmentions are to be sent, and, eventually, sending them. Thus, you need to make sure that at some point of your publishing process you have two directories: one with the old state of your site, and one with the new state. Given that you have `static-webmentions` [configured](#configuration) correctly, at this point you can: 24 | ``` 25 | static-webmentions find 26 | ``` 27 | to find out which webmentions are to be sent and save them to a temporary file, and then, when the new content is online and alive, 28 | ``` 29 | static-webmentions send 30 | ``` 31 | to read the pending webmentions from the temporary file and send them out. 32 | 33 | If your publishing process is set up so that at the moment when you have the two versions the new version is already published, you can do both steps in one go: 34 | ``` 35 | static-webmentions 36 | ``` 37 | 38 | `static-webmention` will detect new and changed pages, and send webmentions as appropriate. To have deleted pages processed correctly, the new state of the site should have [tombstones](https://indieweb.org/tombstone) containing a `` tag in place of the removed pages. 39 | 40 | ### Configuration 41 | `static-webmentions` will look for a config file (`config.toml` in current directory by default). An example config file with all the supported options is [included](config.toml), all the options are fairly self-explanatory. [Hugo](https://gohugo.in) users may want to use the same `config.toml` that they store their website configuration in. 42 | 43 | Several command-line flags can be used to override the options specified in the config file: 44 | ``` 45 | -c [filename] 46 | ``` 47 | the config file to read config from. Default is `config.toml` in current working directory. 48 | 49 | ``` 50 | -b [url] 51 | ``` 52 | base URL of the site (i.e. `http://my-awesome-site.web`). 53 | 54 | ``` 55 | -f [filename] 56 | ``` 57 | the file to store pending webmentions to, or to read them from if `send` command is given. If no file is specified, `static-webmentions find` will just print out the list of webmentions it found. 58 | 59 | ``` 60 | -o [directory] -n [directory] 61 | ``` 62 | the directories where old and new versions of the site are located. 63 | 64 | ### Automation 65 | Depending on your publishing process, automating your outgoing webmentions may require different steps. Here's an example how I do it for my own website. 66 | 67 | The website is built using [Hugo](https://hugo.io), the source is stored in a Git repository. I put both `hugo` and `static-webmentions` binaries on the hosting server, and can publish a new version of the site with a simple script: 68 | ``` 69 | #!/bin/sh 70 | cd /home/my-user/hugo # this is the folder with my website source 71 | git pull 72 | rsync -am --del public old # the current public directory is copied to old/public 73 | hugo --gc --cleanDestinationDir -d public # hugo puts new version in public directory 74 | static-webmentions # compares public to old/public and sends webmentions 75 | ``` 76 | The actual script I use is more complex and the actual process is more error-proof, the script above is a minimal working example. 77 | 78 | ## Development 79 | Pull requests are always welcome! 80 | 81 | ## Credits 82 | This software includes the following software or parts thereof: 83 | * [willnorris/webmention](https://willnorris.com/go/webmention) Copyright 2014, Google Inc. All rights reserved. 84 | * [goquery](https://github.com/PuerkitoBio/goquery) Copyright © 2012-2016, Martin Angers & Contributors 85 | * [BurntSushi/toml](https://github.com/BurntSushi/toml) Copyright © 2013 TOML authors 86 | * [udhos/equalfile](https://github.com/udhos/equalfile) Copyright © 2016 udhos 87 | * [go-cmp](https://github.com/google/go-cmp) Copyright © 2017 The Go Authors. All rights reserved. 88 | * [cascadia](https://github.com/andybalholm/cascadia) Copyright © 2011 Andy Balholm. All rights reserved. 89 | * [wsxiaoys/terminal](https://github.com/wsxiaoys/terminal) Copyright © 2013 Meng Zhang. All rights reserved. 90 | * [The Go Programming Language](https://golang.org) Copyright © 2009 The Go Authors 91 | -------------------------------------------------------------------------------- /main_test.go: -------------------------------------------------------------------------------- 1 | // Copyright (C) 2020 Evgeny Kuznetsov (evgeny@kuznetsov.md) 2 | // 3 | // This program is free software: you can redistribute it and/or modify 4 | // it under the terms of the GNU General Public License as published by 5 | // the Free Software Foundation, either version 3 of the License, or 6 | // (at your option) any later version. 7 | // 8 | // This program is distributed in the hope that it will be useful, 9 | // but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | // GNU General Public License for more details. 12 | // 13 | // You should have received a copy of the GNU General Public License 14 | // along with this program. If not, see . 15 | 16 | package main 17 | 18 | import ( 19 | "fmt" 20 | "io/ioutil" 21 | "net/http" 22 | "net/http/httptest" 23 | "os" 24 | "path/filepath" 25 | "strings" 26 | "sync" 27 | "testing" 28 | ) 29 | 30 | func TestFindWork(t *testing.T) { 31 | conf, err := readConfig("config.toml") 32 | if err != nil { 33 | t.Fatal(err) 34 | } 35 | 36 | mm, err := findWork(conf) 37 | if err != nil { 38 | t.Fatal(err) 39 | } 40 | 41 | var got []string 42 | for _, m := range mm { 43 | got = append(got, m.Dest) 44 | } 45 | 46 | want := []string{ 47 | "http://resend.me", 48 | "http://kuznetsov.md", 49 | "https://my-awesome.site/testdata/page/", 50 | "http://some.site/post/title", 51 | "https://my-awesome.site/other/", 52 | "https://my-awesome.site/testdata/page/", 53 | "http://some.site/post/title", 54 | "https://my-awesome.site/other/", 55 | "http://example.site/post", 56 | } 57 | 58 | if !stringSlicesEqual(got, want) { 59 | t.Fatalf("want: %v\ngot: %v", want, got) 60 | } 61 | } 62 | 63 | func TestGetSources(t *testing.T) { 64 | path := filepath.Join("testdata", "page", "index.html") 65 | base := "https://my-awesome.site" 66 | got, err := getSources(path, base, []string{base, "mailto:", "/tags"}, []string{}, "") 67 | if err != nil { 68 | t.Fatal(err) 69 | } 70 | 71 | want := []string{ 72 | "http://some.site/post/title", 73 | "https://my-awesome.site/other/", 74 | } 75 | 76 | if !stringSlicesEqual(got, want) { 77 | t.Fatalf("want: %v\ngot: %v", want, got) 78 | } 79 | } 80 | 81 | func TestGetSourcesError(t *testing.T) { 82 | path := filepath.Join("testdata", "page", "page") 83 | gotL, gotE := getSources(path, "", []string{}, []string{}, "") 84 | var wantL []string 85 | var wantE error 86 | wantL = nil 87 | wantE = nil 88 | if !stringSlicesEqual(gotL, wantL) { 89 | t.Fatalf("want: %s\n got: %s", wantL, gotL) 90 | } 91 | if gotE != wantE { 92 | t.Fatalf("want: %s\n got: %s", wantE, gotE) 93 | } 94 | } 95 | 96 | func TestCompareDirs(t *testing.T) { 97 | conf, err := readConfig("config.toml") 98 | if err != nil { 99 | t.Fatal(err) 100 | } 101 | 102 | got, err := compareDirs(conf) 103 | if err != nil { 104 | t.Fatal(err) 105 | } 106 | 107 | want := []string{ 108 | "extra_tag.html", 109 | "ignored_css.html", 110 | "other.xml", 111 | "posts/1/index.html", 112 | "posts/2/index.html", 113 | "posts/3/index.html", 114 | "posts/4/index.html", 115 | } 116 | 117 | if !stringSlicesEqual(got, want) { 118 | t.Fatalf("want: %v\ngot: %v", want, got) 119 | } 120 | } 121 | 122 | func TestExLink(t *testing.T) { 123 | tests := map[string]struct { 124 | source string 125 | ex string 126 | want bool 127 | }{ 128 | "russian": {source: "https://site.org/%D0%BD%D0%B0%D1%89%D0%B0%D0%BB%D1%8C%D0%BD%D0%B8%D0%BA%D0%B0", ex: "https://site.org/нащальника", want: true}, 129 | } 130 | 131 | for name, tc := range tests { 132 | t.Run(name, func(t *testing.T) { 133 | got := exLink(tc.source, tc.ex) 134 | if got != tc.want { 135 | t.Fatalf("want: %v, got: %v", tc.want, got) 136 | } 137 | }) 138 | } 139 | } 140 | 141 | func TestThisPage(t *testing.T) { 142 | tests := map[string]struct { 143 | path string 144 | dir string 145 | base string 146 | want string 147 | }{ 148 | "reaction": { 149 | path: "public/reactions/test/index.html", 150 | dir: "public", 151 | base: "https://beta.evgenykuznetsov.org/", 152 | want: "https://beta.evgenykuznetsov.org/reactions/test/", 153 | }, 154 | } 155 | 156 | for name, tc := range tests { 157 | t.Run(name, func(t *testing.T) { 158 | got := thisPage(tc.path, tc.dir, tc.base) 159 | if got != tc.want { 160 | t.Fatalf("want: %v, got: %v", tc.want, got) 161 | } 162 | }) 163 | } 164 | } 165 | 166 | func TestSend(t *testing.T) { 167 | src := "source" 168 | 169 | okay := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 170 | w.WriteHeader(200) 171 | })) 172 | defer okay.Close() 173 | fail := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 174 | w.WriteHeader(400) 175 | })) 176 | defer fail.Close() 177 | 178 | empty := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 179 | fmt.Fprintf(w, `nothing here!`) 180 | })) 181 | defer empty.Close() 182 | bad := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 183 | fmt.Fprintf(w, ``, fail.URL) 184 | })) 185 | defer bad.Close() 186 | good := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 187 | fmt.Fprintf(w, ``, okay.URL) 188 | })) 189 | defer good.Close() 190 | bridgy := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 191 | w.Header().Set("Location", "https://silo.org/me/status/42") 192 | w.WriteHeader(201) 193 | })) 194 | defer bridgy.Close() 195 | creator := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 196 | fmt.Fprintf(w, ``, bridgy.URL) 197 | })) 198 | defer creator.Close() 199 | 200 | tests := map[string]struct { 201 | url string 202 | want string 203 | }{ 204 | "good": {good.URL, "webmention for " + good.URL + " sent"}, 205 | "bridgy": {creator.URL, "webmention for " + creator.URL + " sent\ncreated for source is https://silo.org/me/status/42"}, 206 | "failed send": {bad.URL, "could not send webmention for " + bad.URL + ": response error: 400"}, 207 | "bad page": {"destination", "could not discover endpoint for destination: Get \"destination\": unsupported protocol scheme \"\""}, 208 | "no endpoint": {empty.URL, "could not discover endpoint for " + empty.URL + ": no endpoint found"}, 209 | } 210 | 211 | rescueStdout := os.Stdout 212 | defer func() { os.Stdout = rescueStdout }() 213 | for name, tc := range tests { 214 | t.Run(name, func(t *testing.T) { 215 | r, w, _ := os.Pipe() 216 | os.Stdout = w 217 | var wg sync.WaitGroup 218 | wg.Add(1) 219 | sc := make(map[string]chan struct{}) 220 | cc := concCounter{c: sc} 221 | send(src, tc.url, &wg, &cc, 15) 222 | w.Close() 223 | out, _ := ioutil.ReadAll(r) 224 | got := strings.SplitN(strings.TrimRight(string(out), "\n"), "\n", 2)[1] 225 | if tc.want != got { 226 | t.Fatalf("\nwant %q,\ngot: %q", tc.want, got) 227 | } 228 | }) 229 | } 230 | 231 | // test for race in sendMentions 232 | mm := []mention{ 233 | mention{"source", good.URL}, 234 | mention{"source", bad.URL}, 235 | mention{"source", empty.URL}, 236 | } 237 | sendMentions(mm, 1) 238 | } 239 | 240 | func stringSlicesEqual(a, b []string) bool { 241 | if len(a) != len(b) { 242 | return false 243 | } 244 | for i, v := range a { 245 | if v != b[i] { 246 | return false 247 | } 248 | } 249 | return true 250 | } 251 | -------------------------------------------------------------------------------- /testdata/prod/posts/2/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | My Awesome Site - Page 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 42 |
43 |
44 |
45 | 46 | DIMV 47 | 48 |
49 | Author Image 50 |
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52 | My Awesomest Site 53 |

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99 | © 2020 Author 100 | CC BY-⁠SA 4.0 101 |
102 |
103 | Built with Hugo ❤️ hyde-hyde. 104 |
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108 | 128 |
129 |

Webmentions:

130 | 142 | 149 |
150 | 151 | 152 | 155 | 156 | 157 | -------------------------------------------------------------------------------- /testdata/staging/posts/2/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | My Awesome Site - Page 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 42 |
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45 | 46 | DIMV 47 | 48 |
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52 | My Awesomest Site 53 |

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99 | © 2020 Author 100 | CC BY-⁠SA 4.0 101 |
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103 | Built with Hugo ❤️ hyde-hyde. 104 |
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108 | 128 |
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Webmentions:

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150 | 151 | 152 | 155 | 156 | 157 | -------------------------------------------------------------------------------- /testdata/staging/posts/3/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | My Awesome Site - Page 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 42 |
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45 | 46 | DIMV 47 | 48 |
49 | Author Image 50 |
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52 | My Awesomest Site 53 |

54 |
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99 | © 2020 Author 100 | CC BY-⁠SA 4.0 101 |
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103 | Built with Hugo ❤️ hyde-hyde. 104 |
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108 | 128 |
129 |

Webmentions:

130 | 142 | 149 |
150 | 151 | 152 | 155 | 156 | 157 | -------------------------------------------------------------------------------- /testdata/page/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | My Awesome Site - Page 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 42 |
43 |
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45 | 46 | DIMV 47 | 48 |
49 | Author Image 50 |
51 |

52 | My Awesomest Site 53 |

54 |
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60 | 87 |
88 | 96 |
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99 | © 2020 Author 100 | CC BY-⁠SA 4.0 101 |
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103 | Built with Hugo ❤️ hyde-hyde. 104 |
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111 | 118 | 119 | 120 |
121 | https://some.site/post/title 122 |
123 |
124 |
125 |

Webmention-comment for testing. Link another post to mention. We don't mention tags!

126 |

This line contains a link to a section of this same page! 127 |

We have a section here!

128 |

This is a section of the post

129 |
130 |
131 |
132 |

Webmentions:

133 | 145 | 152 |
153 | 154 | 155 | 158 | 159 | 160 | -------------------------------------------------------------------------------- /testdata/staging/posts/1/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Этой страницы больше нет- DIMV 10 | 11 | 12 | 13 | 14 | 15 | 16 |
17 |
18 |
19 | DIMV 20 |
21 |
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Записи Реакции О сайте Купить мне кофе 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 |
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Этой страницы больше нет

Тут была страница, но теперь она удалена. Так лучше.
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85 | 86 | 92 | 93 | -------------------------------------------------------------------------------- /testdata/prod/posts/1/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | - DIMV 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
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Записи Реакции О сайте Купить мне кофе 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 |
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Евгений Кузнецов
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Это пробная заметка, упоминающая мой сайт.

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116 | Назад | Домой 117 |
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Комментарии — это вебменшены.
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126 | 127 | 133 | 134 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | // Copyright (C) 2020 Evgeny Kuznetsov (evgeny@kuznetsov.md) 2 | // 3 | // This program is free software: you can redistribute it and/or modify 4 | // it under the terms of the GNU General Public License as published by 5 | // the Free Software Foundation, either version 3 of the License, or 6 | // (at your option) any later version. 7 | // 8 | // This program is distributed in the hope that it will be useful, 9 | // but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | // GNU General Public License for more details. 12 | // 13 | // You should have received a copy of the GNU General Public License 14 | // along with this program. If not, see . 15 | 16 | //go:generate go run version_generate.go 17 | 18 | package main 19 | 20 | import ( 21 | "encoding/json" 22 | "errors" 23 | "flag" 24 | "fmt" 25 | "io" 26 | "io/ioutil" 27 | "net/url" 28 | "os" 29 | "path/filepath" 30 | "strings" 31 | "sync" 32 | 33 | "github.com/BurntSushi/toml" 34 | "github.com/PuerkitoBio/goquery" 35 | "willnorris.com/go/webmention" 36 | ) 37 | 38 | type config struct { 39 | baseURL string 40 | newDir string 41 | oldDir string 42 | alsoWatch []string 43 | excludeSources []string 44 | excludeDestinations []string 45 | excludeSelectors []string 46 | storage string 47 | websubHub []string 48 | feedFiles []string 49 | concurFiles int 50 | concurReqs int 51 | } 52 | 53 | type mention struct { 54 | Source string 55 | Dest string 56 | } 57 | 58 | type concCounter struct { 59 | sync.Mutex 60 | c map[string]chan struct{} 61 | } 62 | 63 | var version string = "custom" 64 | 65 | var errPageDeleted = errors.New("410") 66 | 67 | func main() { 68 | var configFile string 69 | flag.StringVar(&configFile, "c", "config.toml", "config file") 70 | fn := flag.String("n", "", "new site version") 71 | fo := flag.String("o", "", "old site version") 72 | fb := flag.String("b", "", "base URL") 73 | fd := flag.String("f", "", "file to store pending webmentions") 74 | 75 | flag.Parse() 76 | 77 | fmt.Printf("static-webmentions version %s\n", version) 78 | cfg, err := readConfig(configFile) 79 | if err != nil { 80 | fmt.Printf("could not read config file %s: %s", configFile, err) 81 | os.Exit(1) 82 | } 83 | 84 | if *fn != "" { 85 | cfg.newDir = *fn 86 | } 87 | 88 | if *fo != "" { 89 | cfg.oldDir = *fo 90 | } 91 | 92 | if *fb != "" { 93 | cfg.baseURL = *fb 94 | } 95 | 96 | if *fd != "" { 97 | cfg.storage = *fd 98 | } 99 | 100 | if len(flag.Args()) > 1 { 101 | fmt.Println("too many arguments") 102 | os.Exit(1) 103 | } 104 | 105 | switch flag.Arg(0) { 106 | case "find": 107 | mentions, err := findWork(cfg) 108 | if err != nil { 109 | fmt.Printf("%v\n", err) 110 | os.Exit(1) 111 | } 112 | if err := dump(mentions, cfg.storage); err != nil { 113 | fmt.Printf("%v\n", err) 114 | os.Exit(1) 115 | } 116 | case "send": 117 | mentions, err := loadMentionsFromJSON(cfg.storage) 118 | if err != nil { 119 | fmt.Printf("%v\n", err) 120 | os.Exit(1) 121 | } 122 | sendMentions(mentions, cfg.concurReqs) 123 | fmt.Println("all sent") 124 | default: 125 | mentions, err := findWork(cfg) 126 | if err != nil { 127 | fmt.Printf("%v\n", err) 128 | os.Exit(1) 129 | } 130 | if len(cfg.websubHub) != 0 { 131 | feeds := findFeeds(cfg) 132 | for _, hub := range cfg.websubHub { 133 | ping(hub, feeds) 134 | } 135 | } 136 | sendMentions(mentions, cfg.concurReqs) 137 | fmt.Println("all sent") 138 | } 139 | } 140 | 141 | func sendMentions(mentions []mention, smax int) { 142 | sc := make(map[string]chan struct{}) 143 | cc := concCounter{c: sc} 144 | var wg sync.WaitGroup 145 | for _, m := range mentions { 146 | wg.Add(1) 147 | go send(m.Source, m.Dest, &wg, &cc, smax) 148 | } 149 | wg.Wait() 150 | } 151 | 152 | func dump(mentions []mention, file string) error { 153 | switch file { 154 | case "": 155 | printMentions(mentions) 156 | return nil 157 | default: 158 | err := saveMentionsToJSON(mentions, file) 159 | return err 160 | } 161 | } 162 | 163 | func saveMentionsToJSON(mentions []mention, file string) error { 164 | bs, err := json.MarshalIndent(mentions, "", " ") 165 | if err != nil { 166 | return err 167 | } 168 | err = ioutil.WriteFile(file, bs, 0644) 169 | return err 170 | } 171 | 172 | func loadMentionsFromJSON(file string) (mentions []mention, err error) { 173 | data, err := ioutil.ReadFile(file) 174 | if err != nil { 175 | return 176 | } 177 | err = json.Unmarshal(data, &mentions) 178 | return 179 | } 180 | 181 | func printMentions(mentions []mention) { 182 | for _, m := range mentions { 183 | fmt.Printf("%v -> %v\n", m.Source, m.Dest) 184 | } 185 | } 186 | 187 | func findWork(cfg config) ([]mention, error) { 188 | files, err := compareDirs(cfg) 189 | if err != nil { 190 | return nil, err 191 | } 192 | 193 | base := postSlash(cfg.baseURL) 194 | var mentions struct { 195 | mu sync.Mutex 196 | mm []mention 197 | } 198 | 199 | cc := make(chan struct{}, cfg.concurFiles) 200 | wgDone := make(chan bool) 201 | errors := make(chan error) 202 | var wg sync.WaitGroup 203 | 204 | for _, file := range files { 205 | wg.Add(1) 206 | cc <- struct{}{} 207 | 208 | go func(file string) { 209 | defer wg.Done() 210 | defer func() { <-cc }() 211 | path := filepath.Join(cfg.oldDir, file) 212 | oldtargets, _ := getSources(path, cfg.baseURL, cfg.excludeDestinations, cfg.excludeSelectors, cfg.oldDir) 213 | path = filepath.Join(cfg.newDir, file) 214 | targets, err := getSources(path, cfg.baseURL, cfg.excludeDestinations, cfg.excludeSelectors, cfg.newDir) 215 | if err != nil { 216 | if err == errPageDeleted { 217 | targets, err = getSources(filepath.Join(cfg.oldDir, file), cfg.baseURL, cfg.excludeDestinations, cfg.excludeSelectors, cfg.oldDir) 218 | if err != nil { 219 | return 220 | } 221 | } else { 222 | errors <- err 223 | return 224 | } 225 | } 226 | targets = appendDedupe(targets, oldtargets...) 227 | for _, target := range targets { 228 | m := mention{base + strings.TrimSuffix(file, "index.html"), target} 229 | mentions.mu.Lock() 230 | mentions.mm = append(mentions.mm, m) 231 | mentions.mu.Unlock() 232 | } 233 | }(file) 234 | } 235 | go func() { 236 | wg.Wait() 237 | close(wgDone) 238 | }() 239 | select { 240 | case <-wgDone: 241 | break 242 | case err := <-errors: 243 | return nil, err 244 | } 245 | return mentions.mm, nil 246 | } 247 | 248 | func readConfig(path string) (config, error) { 249 | type webm struct { 250 | NewDir string 251 | OldDir string 252 | AlsoWatch []string 253 | ExcludeSources []string 254 | ExcludeDestinations []string 255 | ExcludeSelectors []string 256 | WebmentionsFile string 257 | ConcurrentFiles int 258 | ConcurrentRequests int 259 | } 260 | type params struct { 261 | WebsubHub []string 262 | FeedFiles []string 263 | } 264 | type configuration struct { 265 | BaseURL string 266 | Webmentions webm 267 | Params params 268 | } 269 | var cfg configuration 270 | _, err := toml.DecodeFile(path, &cfg) 271 | 272 | var conf config 273 | conf.baseURL = cfg.BaseURL 274 | conf.newDir = cfg.Webmentions.NewDir 275 | conf.oldDir = cfg.Webmentions.OldDir 276 | conf.alsoWatch = cfg.Webmentions.AlsoWatch 277 | conf.excludeSources = cfg.Webmentions.ExcludeSources 278 | conf.excludeDestinations = cfg.Webmentions.ExcludeDestinations 279 | conf.excludeSelectors = cfg.Webmentions.ExcludeSelectors 280 | conf.storage = cfg.Webmentions.WebmentionsFile 281 | conf.websubHub = cfg.Params.WebsubHub 282 | conf.concurFiles = cfg.Webmentions.ConcurrentFiles - 1 283 | if conf.concurFiles < 0 { 284 | conf.concurFiles = 0 285 | } 286 | conf.concurReqs = cfg.Webmentions.ConcurrentRequests 287 | if conf.concurReqs < 1 { 288 | conf.concurReqs = 1 289 | } 290 | if len(cfg.Params.FeedFiles) == 0 { 291 | conf.feedFiles = []string{"index.xml"} 292 | } else { 293 | conf.feedFiles = cfg.Params.FeedFiles 294 | } 295 | return conf, err 296 | } 297 | 298 | func send(source, target string, wg *sync.WaitGroup, cc *concCounter, smax int) { 299 | defer wg.Done() 300 | u, err := url.Parse(target) 301 | if err != nil { 302 | fmt.Printf(" %v doesn't look like a parsable URL\n", target) 303 | return 304 | } 305 | if _, ok := cc.c[u.Host]; !ok { 306 | cc.Lock() 307 | cc.c[u.Host] = make(chan struct{}, smax) 308 | cc.Unlock() 309 | } 310 | cc.c[u.Host] <- struct{}{} 311 | 312 | fmt.Printf("processing webmention for %v ...\n", target) 313 | client := webmention.New(nil) 314 | 315 | endpoint, err := client.DiscoverEndpoint(target) 316 | <-cc.c[u.Host] 317 | if err != nil { 318 | fmt.Printf("could not discover endpoint for %v: %v\n", target, err) 319 | return 320 | } 321 | u, err = url.Parse(endpoint) 322 | if err != nil { 323 | fmt.Printf("%v: discovered enpoint (%v) doesn't look like a parsable URL\n", target, endpoint) 324 | return 325 | } 326 | if _, ok := cc.c[u.Host]; !ok { 327 | cc.Lock() 328 | cc.c[u.Host] = make(chan struct{}, smax) 329 | cc.Unlock() 330 | } 331 | cc.c[u.Host] <- struct{}{} 332 | defer func() { <-cc.c[u.Host] }() 333 | 334 | r, err := client.SendWebmention(endpoint, source, target) 335 | if err != nil { 336 | fmt.Printf("could not send webmention for %v: %v\n", target, err) 337 | return 338 | } 339 | fmt.Printf("webmention for %v sent\n", target) 340 | 341 | if r.StatusCode == 201 { 342 | fmt.Printf("created for %v is %s\n", source, r.Header.Get("location")) 343 | } 344 | } 345 | 346 | func compareDirs(conf config) ([]string, error) { 347 | var changedFiles []string 348 | 349 | err := filepath.Walk(conf.newDir, 350 | func(path string, info os.FileInfo, err error) error { 351 | if err != nil { 352 | return fmt.Errorf("%s: %w", path, err) 353 | } 354 | 355 | if path == conf.newDir { 356 | return nil 357 | } 358 | 359 | relPath := strings.TrimPrefix(path, strings.TrimSuffix(conf.newDir, "/")+"/") 360 | 361 | if pathIsExcluded(relPath, conf.excludeSources) { 362 | return nil 363 | } 364 | 365 | if info.IsDir() { 366 | return nil 367 | } 368 | 369 | if fileNotChanged(path, filepath.Join(conf.oldDir, relPath), conf.alsoWatch) { 370 | return nil 371 | } 372 | 373 | changedFiles = append(changedFiles, relPath) 374 | return nil 375 | }) 376 | if err != nil { 377 | return nil, err 378 | } 379 | 380 | return changedFiles, err 381 | } 382 | 383 | func fileNotChanged(oldPath, newPath string, addSel []string) bool { 384 | of, err := os.Open(oldPath) 385 | if err != nil { 386 | return true 387 | } 388 | defer of.Close() 389 | 390 | nf, err := os.Open(newPath) 391 | if err != nil { 392 | return false 393 | } 394 | defer nf.Close() 395 | 396 | o, _ := extractEntryAndSel(of, addSel) 397 | n, _ := extractEntryAndSel(nf, addSel) 398 | 399 | return o == n 400 | } 401 | 402 | // extractEntryAndSel returns the HTML representation of the first h-entry found in `r`, 403 | // along with anything matching the additional CSS selectors `as` 404 | func extractEntryAndSel(r io.Reader, as []string) (string, error) { 405 | doc, err := goquery.NewDocumentFromReader(r) 406 | if err != nil { 407 | return "", err 408 | } 409 | 410 | out, err := doc.Find(".h-entry").Html() 411 | if err != nil { 412 | return "", err 413 | } 414 | 415 | s := strings.Join(as, ", ") 416 | doc.Find(s).Each(func(_ int, sel *goquery.Selection) { 417 | h, err := sel.Html() 418 | if err != nil { 419 | return 420 | } 421 | out = fmt.Sprintf("%s\n%s", out, h) 422 | }) 423 | 424 | return out, nil 425 | } 426 | 427 | func pathIsExcluded(path string, exclude []string) bool { 428 | for _, ex := range exclude { 429 | if pathExcluded(path, ex) { 430 | return true 431 | } 432 | } 433 | return false 434 | } 435 | 436 | func pathExcluded(path, ex string) bool { 437 | switch strings.HasSuffix(ex, "*") { 438 | case true: 439 | return strings.HasPrefix(path, strings.TrimSuffix(strings.TrimPrefix(ex, "/"), "*")) 440 | default: 441 | path = "/" + path 442 | ex = strings.TrimSuffix(ex, "index.html") 443 | ex = strings.TrimSuffix(ex, "/") + "/index.html" 444 | return path == ex 445 | } 446 | } 447 | 448 | func getSources(path string, base string, exclude []string, excludeCSS []string, relPath string) ([]string, error) { 449 | f, err := os.Open(path) 450 | if err != nil { 451 | return nil, err 452 | } 453 | 454 | defer f.Close() 455 | 456 | if isDeleted(f) { 457 | return nil, errPageDeleted 458 | } 459 | _, err = f.Seek(0, 0) 460 | if err != nil { 461 | return nil, err 462 | } 463 | 464 | d, err := goquery.NewDocumentFromReader(f) 465 | if err != nil { 466 | return nil, nil 467 | } 468 | 469 | s := d.Find(".h-entry") 470 | 471 | h, err := s.Html() 472 | if err != nil { 473 | return nil, err 474 | } 475 | 476 | // this is ugly, but I can't figure out how to do it with goquery 477 | for _, ex := range excludeCSS { 478 | exc, err := s.Find(ex).Html() 479 | if err != nil { 480 | return nil, err 481 | } 482 | if exc == "" { 483 | continue 484 | } 485 | h = strings.ReplaceAll(h, exc, "\n") 486 | } 487 | 488 | links, err := webmention.DiscoverLinksFromReader(strings.NewReader(h), postSlash(base), "") 489 | if err != nil { 490 | return nil, nil 491 | } 492 | exclude = append(exclude, thisPage(path, relPath, base)) 493 | 494 | links = cleanupSources(links, exclude) 495 | 496 | return links, nil 497 | } 498 | 499 | func isDeleted(r io.Reader) bool { 500 | doc, err := goquery.NewDocumentFromReader(r) 501 | if err != nil { 502 | return false 503 | } 504 | 505 | gone := false 506 | 507 | doc.Find("meta").Each(func(_ int, s *goquery.Selection) { 508 | if _, ok := s.Attr("http-equiv"); ok { 509 | if v, ok := s.Attr("content"); ok { 510 | if strings.HasPrefix(v, "410") { 511 | gone = true 512 | } 513 | } 514 | } 515 | }) 516 | 517 | return gone 518 | } 519 | 520 | func thisPage(path, directory, base string) string { 521 | path = strings.TrimPrefix(strings.TrimPrefix(path, "/"), directory) 522 | path = strings.TrimPrefix(path, "/") 523 | this := postSlash(base) + strings.TrimSuffix(path, "index.html") 524 | return this 525 | } 526 | 527 | func cleanupSources(links, exclude []string) []string { 528 | var out []string 529 | 530 | for _, link := range links { 531 | if sourceMatch(link, exclude) { 532 | continue 533 | } 534 | out = append(out, link) 535 | } 536 | 537 | return out 538 | } 539 | 540 | func sourceMatch(link string, exclude []string) bool { 541 | for _, ex := range exclude { 542 | if exLink(link, ex) { 543 | return true 544 | } 545 | } 546 | return false 547 | } 548 | 549 | func exLink(source, ex string) bool { 550 | // first check for fragments and recurse if any 551 | sURL, err := url.Parse(source) 552 | if err == nil { 553 | noFrag := *sURL 554 | noFrag.Fragment = "" 555 | if *sURL != noFrag { 556 | return exLink(noFrag.String(), ex) 557 | } 558 | } 559 | 560 | source = strings.TrimSuffix(source, "index.html") 561 | source = postSlash(source) 562 | ex = postSlash(ex) 563 | 564 | if source == ex { 565 | return true 566 | } 567 | 568 | if eqUnescaped(source, ex) { 569 | return true 570 | } 571 | 572 | sURL, err = url.Parse(source) 573 | if err != nil { 574 | return false 575 | } 576 | 577 | if sURL.Scheme == strings.TrimSuffix(ex, ":/") { 578 | return true 579 | } 580 | 581 | eURL, err := url.Parse(ex) 582 | if err != nil { 583 | return false 584 | } 585 | 586 | if eURL.IsAbs() { 587 | return false 588 | } 589 | 590 | s := strings.TrimPrefix(sURL.EscapedPath(), "/") 591 | e := strings.TrimPrefix(eURL.EscapedPath(), "/") 592 | 593 | return strings.HasPrefix(s, e) 594 | } 595 | 596 | func eqUnescaped(source, ex string) bool { 597 | us, err := url.PathUnescape(source) 598 | if err != nil { 599 | return false 600 | } 601 | ue, err := url.PathUnescape(ex) 602 | if err != nil { 603 | return false 604 | } 605 | return us == ue 606 | } 607 | 608 | func postSlash(s string) string { 609 | return strings.TrimSuffix(s, "/") + "/" 610 | } 611 | 612 | func appendDedupe(a []string, b ...string) (out []string) { 613 | a = append(a, b...) 614 | lp: 615 | for _, s := range a { 616 | for _, str := range out { 617 | if eqUnescaped(s, str) { 618 | continue lp 619 | } 620 | } 621 | out = append(out, s) 622 | } 623 | return 624 | } 625 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom 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By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. We, the Free Software Foundation, use the 18 | GNU General Public License for most of our software; it applies also to 19 | any other work released this way by its authors. You can apply it to 20 | your programs, too. 21 | 22 | When we speak of free software, we are referring to freedom, not 23 | price. Our General Public Licenses are designed to make sure that you 24 | have the freedom to distribute copies of free software (and charge for 25 | them if you wish), that you receive source code or can get it if you 26 | want it, that you can change the software or use pieces of it in new 27 | free programs, and that you know you can do these things. 28 | 29 | To protect your rights, we need to prevent others from denying you 30 | these rights or asking you to surrender the rights. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------