commit 618ae7cf4d05280046cc5267a26d3543a2bf6ab3 Author: Jon Lundy Date: Mon Nov 23 13:58:19 2020 -0700 initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..2eea525 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +.env \ No newline at end of file diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..dd5ed86 --- /dev/null +++ b/Makefile @@ -0,0 +1,32 @@ +NAME=sour.is-ipseity +BUMP?=current +DATE:=$(shell date -u +%FT%TZ) +HASH:=$(shell git rev-pars HEAD 2> /dev/null) +VERSION:=$(shell BUMP=$(BUMP) ./version.sh) + + +version: + @echo $(VERSION) + +tag: + git tag -a v$(VERSION) -m "Version: $(VERSION)" +release: + @make tag BUMP=patch + +run: + go run -v \ + -ldflags "\ + -X main.AppVersion=$(VERSION) \ + -X main.BuildHash=$(HASH) \ + -X main.BuildDate=$(DATE) \ + " \ + . + +build: + go run -v \ + -ldflags "\ + -X main.AppVersion=$(VERSION) \ + -X main.BuildHash=$(HASH) \ + -X main.BuildDate=$(DATE) \ + " \ + . diff --git a/example.env b/example.env new file mode 100644 index 0000000..d09e6fb --- /dev/null +++ b/example.env @@ -0,0 +1,37 @@ +# Rename to '.env' or pass required items to environment when running. + +# REDDIT_APIKEY [REQUIRED] +# REDDIT_SECRET [REQUIRED] +# To prevent reddits low ratelimits for non-authenticated requests +# provide api key and secret. +# aquire personal use script credentials here: https://www.reddit.com/prefs/apps + +REDDIT_APIKEY= +REDDIT_SECRET= + +# XMPP_USERNAME [REQUIRED] +# XMPP_PASSWORD [REQUIRED] +# To authenticate with xmpp for requesting VCard information. + +XMPP_USERNAME= +XMPP_PASSWORD= + +# HTTP_LISTEN [RECOMMEND] +# To set the listen address/port (default: :9061) + +HTTP_LISTEN= + +# BASE_URL [RECOMMEND] +# To set external facing url. It will try to guess hostname and port based on the HTTP_LISTEN. + +BASE_URL= + +# XMPP_URL [OPTIONAL] +# To set XMPP http url for VCard verification. (default: BASE_URL) + +XMPP_URL= + +# DNS_URL [OPTIONAL] +# To set DNS http url for DNS verification. (default: BASE_URL) + +XMPP_URL= diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..1471eb3 --- /dev/null +++ b/go.mod @@ -0,0 +1,22 @@ +module github.com/sour-is/keyproofs + +go 1.15 + +require ( + github.com/go-chi/chi v4.1.2+incompatible + github.com/google/go-cmp v0.5.3 // indirect + github.com/hashicorp/golang-lru v0.5.4 + github.com/joho/godotenv v1.3.0 + github.com/lucasb-eyer/go-colorful v1.0.3 + github.com/rs/cors v1.7.0 + github.com/rs/zerolog v1.20.0 + github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e + github.com/smartystreets/goconvey v1.6.4 // indirect + github.com/sour-is/crypto v0.0.0-20201016232853-f42a24ba5a81 + github.com/stretchr/testify v1.6.1 // indirect + github.com/tv42/zbase32 v0.0.0-20190604154422-aacc64a8f915 + go.uber.org/ratelimit v0.1.0 + golang.org/x/crypto v0.0.0-20201117144127-c1f2f97bffc9 + gosrc.io/xmpp v0.5.1 + sour.is/x/toolbox v0.12.17 +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..54fb3c5 --- 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+sourcegraph.com/sourcegraph/appdash-data v0.0.0-20151005221446-73f23eafcf67/go.mod h1:L5q+DGLGOQFpo1snNEkLOJT2d1YTW66rWNzatr3He1k= diff --git a/main.go b/main.go new file mode 100644 index 0000000..9ea47de --- /dev/null +++ b/main.go @@ -0,0 +1,200 @@ +package main + +import ( + "context" + "fmt" + "net/http" + "os" + "os/signal" + "strings" + "time" + + "github.com/go-chi/chi" + "github.com/go-chi/chi/middleware" + lru "github.com/hashicorp/golang-lru" + _ "github.com/joho/godotenv/autoload" + "github.com/rs/cors" + "github.com/rs/zerolog" + "github.com/rs/zerolog/log" + + "gosrc.io/xmpp" + + "github.com/sour-is/keyproofs/pkg/cache" + "github.com/sour-is/keyproofs/pkg/config" + "github.com/sour-is/keyproofs/pkg/keyproofs" +) + +var ( + // AppVersion Application Version Number + AppVersion string + + // AppBuild Application Build Hash + BuildHash string + + // AppDate Application Build Date + BuildDate string +) + +func main() { + log := zerolog.New(zerolog.NewConsoleWriter()).With().Timestamp().Caller().Logger() + + ctx := context.Background() + ctx = log.WithContext(ctx) + ctx = WithInterupt(ctx) + + cfg := config.New() + cfg.Set("app-name", "KeyProofs") + cfg.Set("app-version", AppVersion) + cfg.Set("build-hash", BuildHash) + cfg.Set("build-date", BuildDate) + ctx = cfg.Apply(ctx) + + if err := run(ctx); err != nil { + log.Fatal().Stack().Err(err).Send() + os.Exit(1) + } +} + +func run(ctx context.Context) error { + log := log.Ctx(ctx) + + // derive baseURL from listener options + listen := env("HTTP_LISTEN", ":9061") + host, _ := os.Hostname() + if strings.HasPrefix(listen, ":") { + host += listen + } + baseURL := fmt.Sprintf("http://%s", host) + + // Create cache for promise engine + arc, _ := lru.NewARC(4096) + c := cache.New(arc) + + // Set config values + cfg := config.FromContext(ctx) + cfg.Set("base-url", env("BASE_URL", baseURL)) + cfg.Set("dns-url", env("DNS_URL", baseURL)) + cfg.Set("xmpp-url", env("XMPP_URL", baseURL)) + + cfg.Set("reddit.api-key", os.Getenv("REDDIT_APIKEY")) + cfg.Set("reddit.secret", os.Getenv("REDDIT_SECRET")) + + cfg.Set("xmpp-config", &xmpp.Config{ + Jid: os.Getenv("XMPP_USERNAME"), + Credential: xmpp.Password(os.Getenv("XMPP_PASSWORD")), + }) + + // configure cors middleware + corsMiddleware := cors.New(cors.Options{ + AllowCredentials: true, + AllowedMethods: strings.Fields(env("CORS_METHODS", "GET")), + AllowedOrigins: strings.Fields(env("CORS_ORIGIN", "*")), + }).Handler + + mux := chi.NewRouter() + mux.Use( + cfg.ApplyHTTP, + corsMiddleware, + middleware.RequestID, + middleware.RealIP, + middleware.RequestLogger(&middleware.DefaultLogFormatter{Logger: accessLog(log.Info)}), + middleware.Recoverer, + ) + + app, err := keyproofs.New(ctx, c) + if err != nil { + return err + } + + app.Routes(mux) + + log.Info(). + Str("app", cfg.GetString("app-name")). + Str("version", cfg.GetString("app-version")). + Str("build-hash", cfg.GetString("build-hash")). + Str("build-date", cfg.GetString("build-date")). + Str("listen", listen). + Msg("startup") + + err = New(&http.Server{ + Addr: listen, + WriteTimeout: 15 * time.Second, + ReadTimeout: 15 * time.Second, + Handler: mux, + }).Run(ctx) + + if err != nil { + return err + } + + log.Info().Msg("shutdown") + return nil +} + +type Server struct { + srv *http.Server +} + +func New(s *http.Server) *Server { + return &Server{srv: s} +} +func (s *Server) Run(ctx context.Context) error { + log := log.Ctx(ctx) + + go func() { + <-ctx.Done() + log.Info().Msg("Shutdown HTTP") + + ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) + defer cancel() + err := s.srv.Shutdown(ctx) + if err != nil { + log.Fatal().Err(err) + return + } + + log.Info().Msg("Stopped HTTP") + }() + + return s.srv.ListenAndServe() +} + +func env(name, defaultValue string) string { + if value := os.Getenv(name); value != "" { + return value + } + + return defaultValue +} + +func WithInterupt(ctx context.Context) context.Context { + log := log.Ctx(ctx) + ctx, cancel := context.WithCancel(ctx) + + // Listen for Interrupt signals + c := make(chan os.Signal, 1) + signal.Notify(c, os.Interrupt) + defer signal.Stop(c) + + go func() { + select { + case <-c: + cancel() + log.Warn().Msg("Shutting down! interrupt received") + return + case <-ctx.Done(): + cancel() + + log.Warn().Msg("Shutting down! context cancelled") + return + } + }() + + return ctx +} + +type accessLog func() *zerolog.Event + +func (a accessLog) Print(v ...interface{}) { + a().Msg(fmt.Sprint(v...)) +} diff --git a/pkg/cache/cache.go b/pkg/cache/cache.go new file mode 100644 index 0000000..2c8d12a --- /dev/null +++ b/pkg/cache/cache.go @@ -0,0 +1,78 @@ +package cache + +import ( + "time" +) + +type Key interface { + Key() interface{} +} +type Value interface { + Stale() bool + Value() interface{} +} +type item struct { + key interface{} + value interface{} + expireOn time.Time +} + +func NewItem(key, value interface{}, expires time.Duration) *item { + return &item{ + key: key, + value: value, + expireOn: time.Now().Add(expires), + } +} +func (e *item) Stale() bool { + if e == nil || e.value == nil { + return true + } + + return time.Now().After(e.expireOn) +} +func (s *item) Value() interface{} { + return s.value +} + +type Cacher interface { + Add(Key, Value) + Contains(Key) bool + Get(Key) (Value, bool) + Remove(Key) +} + +// InterfaceCacher external cache interface. +type InterfaceCacher interface { + Add(interface{}, interface{}) + Get(interface{}) (interface{}, bool) + Contains(interface{}) bool + Remove(interface{}) +} + +type cache struct { + cache InterfaceCacher +} + +func New(c InterfaceCacher) Cacher { + return &cache{cache: c} +} +func (c *cache) Add(key Key, value Value) { + c.cache.Add(key.Key(), value) +} +func (c *cache) Get(key Key) (Value, bool) { + if v, ok := c.cache.Get(key.Key()); ok { + if value, ok := v.(Value); ok && !value.Stale() { + return value, true + } + c.cache.Remove(key.Key()) + } + return nil, false +} +func (c *cache) Contains(key Key) bool { + _, ok := c.Get(key) + return ok +} +func (c *cache) Remove(key Key) { + c.cache.Remove(key.Key()) +} diff --git a/pkg/config/config.go b/pkg/config/config.go new file mode 100644 index 0000000..fb6cab9 --- /dev/null +++ b/pkg/config/config.go @@ -0,0 +1,103 @@ +package config + +import ( + "bytes" + "context" + "fmt" + "net/http" + "sync" +) + +type cfg struct { + sync.RWMutex + m map[string]interface{} +} + +var key struct{} + +func New() *cfg { + return &cfg{m: make(map[string]interface{})} +} + +func FromContext(ctx context.Context) *cfg { + if v, ok := ctx.Value(key).(*cfg); ok { + return v + } + + return nil +} + +func (c *cfg) Apply(ctx context.Context) context.Context { + if inctx := FromContext(ctx); inctx != nil { + inctx.setAll(c.m) + } + + return context.WithValue(ctx, key, c) +} + +func (c *cfg) setAll(m map[string]interface{}) { + if c == nil { + return + } + + c.Lock() + defer c.Unlock() + + c.m = m +} + +func (c *cfg) GetString(name string) string { + if v := c.Get(name); v != nil { + if s, ok := v.(string); ok { + return s + } else { + return fmt.Sprint(s) + } + } + + return "" +} + +func (c *cfg) Set(name string, value interface{}) { + if c == nil { + return + } + + c.Lock() + defer c.Unlock() + + c.m[name] = value +} + +func (c *cfg) Get(name string) interface{} { + if c == nil { + return nil + } + + c.RLock() + defer c.RUnlock() + + return c.m[name] +} + +func (c *cfg) String() string { + if c == nil { + return "" + } + + c.RLock() + defer c.RUnlock() + + var b bytes.Buffer + for k, v := range c.m { + fmt.Fprintf(&b, "%s = %v\n", k, v) + } + return b.String() +} + +func (c *cfg) ApplyHTTP(h http.Handler) http.Handler { + return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + r = r.WithContext(c.Apply(r.Context())) + h.ServeHTTP(w, r) + }) +} diff --git a/pkg/keyproofs/opengpg.go b/pkg/keyproofs/opengpg.go new file mode 100644 index 0000000..a8e815e --- /dev/null +++ b/pkg/keyproofs/opengpg.go @@ -0,0 +1,204 @@ +package keyproofs + +import ( + "bytes" + "context" + "crypto/sha1" + "fmt" + "io" + "net/http" + "net/mail" + "net/url" + "strings" + + "github.com/rs/zerolog/log" + "github.com/sour-is/crypto/openpgp" + "github.com/tv42/zbase32" + "golang.org/x/crypto/openpgp/armor" +) + +func getOpenPGPkey(ctx context.Context, id string) (entity *Entity, err error) { + if isFingerprint(id) { + addr := "https://keys.openpgp.org/vks/v1/by-fingerprint/" + strings.ToUpper(id) + return getEntityHTTP(ctx, addr, true) + } else if email, err := mail.ParseAddress(id); err == nil { + addr := getWKDPubKeyAddr(email) + req, err := getEntityHTTP(ctx, addr, false) + if err == nil { + return req, err + } + + addr = "https://keys.openpgp.org/vks/v1/by-email/" + url.QueryEscape(id) + return getEntityHTTP(ctx, addr, true) + } else { + return entity, fmt.Errorf("Parse address: %w", err) + } +} + +func getEntityHTTP(ctx context.Context, url string, useArmored bool) (entity *Entity, err error) { + log := log.Ctx(ctx) + + req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil) + if err != nil { + return entity, err + } + cl := http.Client{} + resp, err := cl.Do(req) + log.Debug(). + Bool("useArmored", useArmored). + Str("status", resp.Status). + Str("url", url). + Msg("getEntityHTTP") + + if err != nil { + return entity, fmt.Errorf("Requesting key: %w\nRemote URL: %v", err, url) + } + + if resp.StatusCode != 200 { + return entity, fmt.Errorf("bad response from remote: %s\nRemote URL: %v", resp.Status, url) + } + + defer resp.Body.Close() + + if resp.Header.Get("Content-Type") == "application/pgp-keys" { + useArmored = true + } + + return ReadKey(resp.Body, useArmored) +} + +type EntityKey string + +func (k EntityKey) Key() interface{} { + return k +} + +type Entity struct { + Primary *mail.Address + Emails []*mail.Address + Fingerprint string + Proofs []string + ArmorText string +} + +func getEntity(lis openpgp.EntityList) (*Entity, error) { + entity := &Entity{} + var err error + + for _, e := range lis { + if e == nil { + continue + } + if e.PrimaryKey == nil { + continue + } + + entity.Fingerprint = fmt.Sprintf("%X", e.PrimaryKey.Fingerprint) + + for name, ident := range e.Identities { + // Pick first identity + if entity.Primary == nil { + entity.Primary, err = mail.ParseAddress(name) + if err != nil { + return entity, err + } + } + // If one is marked primary use that + if ident.SelfSignature != nil && ident.SelfSignature.IsPrimaryId != nil && *ident.SelfSignature.IsPrimaryId { + entity.Primary, err = mail.ParseAddress(name) + if err != nil { + return entity, err + } + + } else { + var email *mail.Address + if email, err = mail.ParseAddress(name); err != nil { + return entity, err + } + if email.Address != entity.Primary.Address { + entity.Emails = append(entity.Emails, email) + } + } + + // If identity is self signed read notation data. + if ident.SelfSignature != nil && ident.SelfSignature.NotationData != nil { + // Get proofs and append to list. + if proofs, ok := ident.SelfSignature.NotationData["proof@metacode.biz"]; ok { + entity.Proofs = append(entity.Proofs, proofs...) + } + } + } + break + } + + if entity.Primary == nil { + entity.Primary, _ = mail.ParseAddress("nobody@nodomain.xyz") + } + + return entity, err +} + +func ReadKey(r io.Reader, useArmored bool) (e *Entity, err error) { + var buf bytes.Buffer + + var w io.Writer = &buf + + e = &Entity{} + + if !useArmored { + var aw io.WriteCloser + aw, err = armor.Encode(&buf, "PGP PUBLIC KEY BLOCK", nil) + if err != nil { + return e, fmt.Errorf("Read key: %w", err) + } + defer aw.Close() + + w = aw + } + defer func() { + if e != nil { + e.ArmorText = buf.String() + } + }() + + r = io.TeeReader(r, w) + + var lis openpgp.EntityList + + if useArmored { + lis, err = openpgp.ReadArmoredKeyRing(r) + } else { + lis, err = openpgp.ReadKeyRing(r) + } + if err != nil { + return e, fmt.Errorf("Read key: %w", err) + } + + e, err = getEntity(lis) + if err != nil { + return e, fmt.Errorf("Parse key: %w", err) + } + + return +} + +func isFingerprint(s string) bool { + for _, r := range s { + switch r { + case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'A', 'B', 'C', 'D', 'E', 'F': + default: + return false + } + } + + return true +} + +func getWKDPubKeyAddr(email *mail.Address) string { + parts := strings.SplitN(email.Address, "@", 2) + + hash := sha1.Sum([]byte(parts[0])) + lp := zbase32.EncodeToString(hash[:]) + + return fmt.Sprintf("https://%s/.well-known/openpgpkey/hu/%s", parts[1], lp) +} diff --git a/pkg/keyproofs/proofs.go b/pkg/keyproofs/proofs.go new file mode 100644 index 0000000..cb765ac --- /dev/null +++ b/pkg/keyproofs/proofs.go @@ -0,0 +1,372 @@ +package keyproofs + +import ( + "bufio" + "context" + "encoding/base64" + "encoding/json" + "errors" + "fmt" + "math/rand" + "net/http" + "net/url" + "strings" + + "github.com/rs/zerolog/log" + "github.com/sour-is/keyproofs/pkg/config" +) + +type Proof struct { + Fingerprint string + Icon string + Service string + Name string + Verify string + Link string + Status ProofStatus + + URI *url.URL +} +type Proofs map[string]*Proof + +type ProofKey string + +func (k ProofKey) Key() interface{} { + return k +} + +type ProofStatus int + +const ( + ProofChecking ProofStatus = iota + ProofError + ProofInvalid + ProofVerified +) + +func (p ProofStatus) String() string { + switch p { + case ProofChecking: + return "Checking" + case ProofError: + return "Error" + case ProofInvalid: + return "Invalid" + case ProofVerified: + return "Verified" + default: + return "" + } +} + +func NewProof(ctx context.Context, uri, fingerprint string) ProofResolver { + log := log.Ctx(ctx) + baseURL := config.FromContext(ctx).GetString("base-url") + + p := Proof{Verify: uri, Link: uri, Fingerprint: fingerprint} + defer log.Info(). + Interface("path", p.URI). + Str("name", p.Name). + Str("service", p.Service). + Str("link", p.Link). + Msg("Proof") + + var err error + + p.URI, err = url.Parse(uri) + if err != nil { + p.Icon = "exclamation-triangle" + p.Service = "error" + p.Name = err.Error() + + return &p + } + + p.Service = p.URI.Scheme + + switch p.URI.Scheme { + case "dns": + p.Icon = "fas fa-globe" + p.Name = p.URI.Opaque + p.Link = fmt.Sprintf("https://%s", p.URI.Opaque) + p.Verify = fmt.Sprintf("%s/dns/%s", baseURL, p.URI.Opaque) + return &httpResolve{p, p.Verify, nil} + + case "xmpp": + p.Icon = "fas fa-comments" + p.Name = p.URI.Opaque + p.Verify = fmt.Sprintf("%s/vcard/%s", baseURL, p.URI.Opaque) + return &httpResolve{p, p.Verify, nil} + + case "https": + p.Icon = "fas fa-atlas" + p.Name = p.URI.Hostname() + p.Link = fmt.Sprintf("https://%s", p.URI.Hostname()) + + switch { + case strings.HasPrefix(p.URI.Host, "twitter.com"): + // TODO: Add api authenticated code path. + if sp := strings.SplitN(p.URI.Path, "/", 3); len(sp) > 1 { + p.Icon = "fab fa-twitter" + p.Service = "Twitter" + p.Name = sp[1] + p.Link = fmt.Sprintf("https://twitter.com/%s", p.Name) + p.Verify = fmt.Sprintf("https://twitter.com%s", p.URI.Path) + url := fmt.Sprintf("https://mobile.twitter.com%s", p.URI.Path) + return &httpResolve{p, url, nil} + } + + case strings.HasPrefix(p.URI.Host, "news.ycombinator.com"): + p.Icon = "fab fa-hacker-news" + p.Service = "HackerNews" + p.Name = p.URI.Query().Get("id") + p.Link = uri + return &httpResolve{p, p.Verify, nil} + + case strings.HasPrefix(p.URI.Host, "dev.to"): + if sp := strings.SplitN(p.URI.Path, "/", 3); len(sp) > 1 { + p.Icon = "fab fa-dev" + p.Service = "dev.to" + p.Name = sp[1] + p.Link = fmt.Sprintf("https://dev.to/%s", p.Name) + url := fmt.Sprintf("https://dev.to/api/articles/%s/%s", sp[1], sp[2]) + return &httpResolve{p, url, nil} + } + + case strings.HasPrefix(p.URI.Host, "reddit.com"), strings.HasPrefix(p.URI.Host, "www.reddit.com"): + var headers map[string]string + + cfg := config.FromContext(ctx) + if apikey := cfg.GetString("reddit.api-key"); apikey != "" { + secret := cfg.GetString("reddit.secret") + + headers = map[string]string{ + "Authorization": fmt.Sprintf("basic %s", + base64.StdEncoding.EncodeToString([]byte(apikey+":"+secret))), + "User-Agent": "ipseity/0.1.0", + } + } + + if sp := strings.SplitN(p.URI.Path, "/", 6); len(sp) > 5 { + p.Icon = "fab fa-reddit" + p.Service = "Reddit" + p.Name = sp[2] + p.Link = fmt.Sprintf("https://www.reddit.com/user/%s", p.Name) + url := fmt.Sprintf("https://api.reddit.com/user/%s/comments/%s/%s", sp[2], sp[4], sp[5]) + return &httpResolve{p, url, headers} + } + + case strings.HasPrefix(p.URI.Host, "gist.github.com"): + p.Icon = "fab fa-github" + p.Service = "GitHub" + if sp := strings.SplitN(p.URI.Path, "/", 3); len(sp) > 2 { + var headers map[string]string + if secret := config.FromContext(ctx).GetString("github.secret"); secret != "" { + headers = map[string]string{ + "Authorization": fmt.Sprintf("bearer %s", secret), + "User-Agent": "keyproofs/0.1.0", + } + } + + p.Name = sp[1] + p.Link = fmt.Sprintf("https://github.com/%s", p.Name) + url := fmt.Sprintf("https://api.github.com/gists/%s", sp[2]) + return &httpResolve{p, url, headers} + } + + case strings.HasPrefix(p.URI.Host, "lobste.rs"): + if sp := strings.SplitN(p.URI.Path, "/", 3); len(sp) > 2 { + p.Icon = "fas fa-list-ul" + p.Service = "Lobsters" + p.Name = sp[2] + p.Link = uri + p.Verify += ".json" + return &httpResolve{p, p.Verify, nil} + } + + case strings.HasSuffix(p.URI.Path, "/gitlab_proof"): + if sp := strings.SplitN(p.URI.Path, "/", 3); len(sp) > 1 { + p.Icon = "fab fa-gitlab" + p.Service = "GetLab" + p.Name = sp[1] + p.Link = fmt.Sprintf("https://%s/%s", p.URI.Host, p.Name) + p.Name = fmt.Sprintf("%s@%s", p.Name, p.URI.Host) + return &gitlabResolve{p} + } + + case strings.HasSuffix(p.URI.Path, "/gitea_proof"): + if sp := strings.SplitN(p.URI.Path, "/", 3); len(sp) > 2 { + p.Icon = "fas fa-mug-hot" + p.Service = "Gitea" + p.Name = sp[1] + p.Link = fmt.Sprintf("https://%s/%s", p.URI.Host, p.Name) + p.Name = fmt.Sprintf("%s@%s", p.Name, p.URI.Host) + url := fmt.Sprintf("https://%s/api/v1/repos/%s/gitea_proof", p.URI.Host, sp[1]) + return &httpResolve{p, url, nil} + } + + default: + if sp := strings.SplitN(p.URI.Path, "/", 3); len(sp) > 1 { + p.Icon = "fas fa-project-diagram" + p.Service = "Fediverse" + if len(sp) > 2 && (sp[1] == "u" || sp[1] == "user" || sp[1] == "users") { + p.Name = sp[2] + } else { + p.Name = sp[1] + } + p.Name = fmt.Sprintf("%s@%s", p.Name, p.URI.Host) + p.Link = uri + return &httpResolve{p, p.Verify, nil} + } + } + default: + p.Icon = "exclamation-triangle" + p.Service = "unknown" + p.Name = "nobody" + } + + return &p +} + +type ProofResolver interface { + Resolve(context.Context) error + Proof() *Proof +} + +type httpResolve struct { + proof Proof + url string + headers map[string]string +} + +func (p *httpResolve) Resolve(ctx context.Context) error { + err := checkHTTP(ctx, p.url, p.proof.Fingerprint, p.headers) + if err == ErrNoFingerprint { + p.proof.Status = ProofInvalid + } else if err != nil { + p.proof.Status = ProofError + } else { + p.proof.Status = ProofVerified + } + return err +} +func (p *httpResolve) Proof() *Proof { + return &p.proof +} + +type gitlabResolve struct { + proof Proof +} + +func (r *gitlabResolve) Resolve(ctx context.Context) error { + uri := r.proof.URI + r.proof.Status = ProofInvalid + + if sp := strings.SplitN(uri.Path, "/", 3); len(sp) > 1 { + user := []struct { + Id int `json:"id"` + }{} + if err := httpJSON(ctx, fmt.Sprintf("https://%s/api/v4/users?username=%s", uri.Host, sp[1]), nil, &user); err != nil { + return err + } + if len(user) == 0 { + return ErrNoFingerprint + } + u := user[0] + url := fmt.Sprintf("https://%s/api/v4/users/%d/projects", uri.Host, u.Id) + proofs := []struct { + Description string + }{} + if err := httpJSON(ctx, url, nil, &proofs); err != nil { + return err + } + if len(proofs) == 0 { + return ErrNoFingerprint + } + ck := fmt.Sprintf("[Verifying my OpenPGP key: openpgp4fpr:%s]", strings.ToLower(r.proof.Fingerprint)) + for _, p := range proofs { + if strings.Contains(p.Description, ck) { + r.proof.Status = ProofVerified + return nil + } + } + } + + return ErrNoFingerprint +} +func (p *gitlabResolve) Proof() *Proof { + return &p.proof +} + +func (p *Proof) Resolve(ctx context.Context) error { + return fmt.Errorf("Not Implemented") +} +func (p *Proof) Proof() *Proof { + return p +} + +func checkHTTP(ctx context.Context, uri, fingerprint string, hdr map[string]string) error { + log := log.Ctx(ctx) + + log.Info(). + Str("URI", uri). + Str("fp", fingerprint). + Msg("Proof") + + req, err := http.NewRequestWithContext(ctx, "GET", uri, nil) + if err != nil { + log.Err(err) + return err + } + req.Header.Set("Accept", "application/json") + for k, v := range hdr { + req.Header.Set(k, v) + } + + res, err := http.DefaultClient.Do(req) + if err != nil { + log.Err(err) + return err + } + defer res.Body.Close() + + ts := rand.Int63() + log.Info().Str("uri", uri).Int64("ts", ts).Msg("Reading data") + defer log.Info().Str("uri", uri).Int64("ts", ts).Msg("Read data") + + scan := bufio.NewScanner(res.Body) + for scan.Scan() { + if strings.Contains(strings.ToUpper(scan.Text()), fingerprint) { + return nil + } + } + + return ErrNoFingerprint +} + +var ErrNoFingerprint = errors.New("fingerprint not found") + +func httpJSON(ctx context.Context, uri string, hdr map[string]string, dst interface{}) error { + log := log.Ctx(ctx) + + log.Info().Str("URI", uri).Msg("httpJSON") + + req, err := http.NewRequestWithContext(ctx, "GET", uri, nil) + if err != nil { + log.Err(err) + return err + } + req.Header.Set("Accept", "application/json") + for k, v := range hdr { + req.Header.Set(k, v) + } + + res, err := http.DefaultClient.Do(req) + if err != nil { + log.Err(err) + return err + } + defer res.Body.Close() + + return json.NewDecoder(res.Body).Decode(dst) +} diff --git a/pkg/keyproofs/routes.go b/pkg/keyproofs/routes.go new file mode 100644 index 0000000..54edc13 --- /dev/null +++ b/pkg/keyproofs/routes.go @@ -0,0 +1,324 @@ +package keyproofs + +import ( + "context" + "encoding/base64" + "fmt" + "net" + "net/http" + "net/mail" + "strconv" + "strings" + "text/template" + "time" + + "github.com/go-chi/chi" + zlog "github.com/rs/zerolog/log" + "github.com/skip2/go-qrcode" + "gosrc.io/xmpp" + + "github.com/sour-is/keyproofs/pkg/cache" + "github.com/sour-is/keyproofs/pkg/config" + "github.com/sour-is/keyproofs/pkg/promise" +) + +var expireAfter = 20 * time.Minute + +func New(ctx context.Context, c cache.Cacher) (*identity, error) { + log := zlog.Ctx(ctx) + + var ok bool + var xmppConfig *xmpp.Config + if xmppConfig, ok = config.FromContext(ctx).Get("xmpp-config").(*xmpp.Config); !ok { + log.Error().Msg("no xmpp-config") + + return nil, fmt.Errorf("no xmpp config") + } + + conn, err := NewXMPP(ctx, xmppConfig) + if err != nil { + return nil, err + } + + tasker := promise.NewRunner(ctx, promise.Timeout(30*time.Second), promise.WithCache(c, expireAfter)) + i := &identity{ + cache: c, + tasker: tasker, + conn: conn, + } + + return i, nil +} + +// 1x1 gif pixel +var pixl = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=" +var keypng, _ = base64.StdEncoding.DecodeString("iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAABKUlEQVQ4jZ2SvUoDURCFUy/Y2Fv4BoKIiFgLSWbmCWw0e3cmNgGfwacQsbCxUEFEEIVkxsQulaK1kheIiFVW1mJXiZv904FbXb5zzvzUaiWlPqyYwIkyvRjjqwmeaauxUcbFMKOvTKEJRVPv05hCY9wrhHt+fckEJ79gxg9rweJN8qdSkESZjlLOkQm+Xe9szlubFkxwYoznuQIm9DgrQJEyjZXpPU5Eo6L+H7IEUmJFAnBQJmAMp5nw0IFnjFoiEGrQXJuBLx14JtgtiR5qAO2c4aFLAffGeGiMT8b0rAEe96WxnBlbGbbia/vZ+2CwjXO5g0pN/TZ1NNXgoQPPHO2aJLsViu4E+xdVnXsOOtPOMbxeDY6jw/6/nL+r6+qryjQyhqs/OSf1Bf+pJC1wKqO/AAAAAElFTkSuQmCC") + +var defaultStyle = &Style{ + Avatar: pixl, + Cover: pixl, + Background: pixl, + Palette: getPalette("#93CCEA"), +} + +type identity struct { + cache cache.Cacher + tasker promise.Tasker + conn *connection +} + +func (s *identity) Routes(r *chi.Mux) { + r.Use(secHeaders) + r.MethodFunc("GET", "/id/{id}", s.get) + r.MethodFunc("GET", "/dns/{domain}", s.getDNS) + r.MethodFunc("GET", "/vcard/{jid}", s.getVCard) + r.MethodFunc("GET", "/qr", s.getQR) + r.MethodFunc("GET", "/favicon.ico", func(w http.ResponseWriter, r *http.Request) { + w.Header().Set("Content-Type", "image/png") + w.WriteHeader(200) + _, _ = w.Write(keypng) + }) +} + +func fmtKey(key promise.Key) string { + return fmt.Sprintf("%T", key.Key()) +} + +func (s *identity) get(w http.ResponseWriter, r *http.Request) { + log := zlog.Ctx(r.Context()) + + id := chi.URLParam(r, "id") + log.Debug().Str("get ", id).Send() + + // Setup timeout for page refresh + ctx, cancel := context.WithTimeout(r.Context(), 2*time.Second) + defer cancel() + + // Run tasks to resolve entity, style, and proofs. + task := s.tasker.Run(EntityKey(id), func(q promise.Q) { + ctx := q.Context() + log := zlog.Ctx(ctx).With().Interface(fmtKey(q), q.Key()).Logger() + + key := q.Key().(EntityKey) + + entity, err := getOpenPGPkey(ctx, string(key)) + if err != nil { + q.Reject(err) + return + } + + log.Debug().Msg("Resolving Entity") + q.Resolve(entity) + }) + + task.After(func(q promise.ResultQ) { + entity := q.Result().(*Entity) + + zlog.Ctx(q.Context()). + Info(). + Str("email", entity.Primary.Address). + Interface(fmtKey(q), q.Key()). + Msg("Do Style ") + + q.Run(StyleKey(entity.Primary.Address), func(q promise.Q) { + ctx := q.Context() + log := zlog.Ctx(ctx).With().Interface(fmtKey(q), q.Key()).Logger() + + key := q.Key().(StyleKey) + + log.Debug().Msg("start task") + style, err := s.getStyle(ctx, string(key)) + if err != nil { + q.Reject(err) + return + } + + log.Debug().Msg("Resolving Style") + q.Resolve(style) + }) + + }) + + task.After(func(q promise.ResultQ) { + entity := q.Result().(*Entity) + log := zlog.Ctx(ctx). + With(). + Interface(fmtKey(q), q.Key()). + Logger() + + log.Info(). + Int("num", len(entity.Proofs)). + Msg("Scheduling Proofs") + + for i := range entity.Proofs { + q.Run(ProofKey(entity.Proofs[i]), func(q promise.Q) { + ctx := q.Context() + log := zlog.Ctx(ctx). + With(). + Interface(fmtKey(q), q.Key()). + Logger() + + key := q.Key().(ProofKey) + proof := NewProof(ctx, string(key), entity.Fingerprint) + defer log.Debug().Interface("status", proof.Proof().Status).Msg("Resolving Proof") + + if err := proof.Resolve(ctx); err != nil && err != ErrNoFingerprint { + log.Err(err).Send() + } + + q.Resolve(proof.Proof()) + }) + } + }) + + page := page{Style: defaultStyle} + + // Wait for either entity to resolve or timeout + select { + case <-task.Await(): + log.Print("Tasks Competed") + if err := task.Err(); err != nil { + page.Err = err + page.IsComplete = true + break + } + page.Entity = task.Result().(*Entity) + + case <-ctx.Done(): + log.Print("Deadline Timeout") + if e, ok := s.cache.Get(EntityKey(id)); ok { + page.Entity = e.Value().(*Entity) + } + } + + // Build page based on available information. + if page.Entity != nil { + var gotStyle, gotProofs bool + + if s, ok := s.cache.Get(StyleKey(page.Entity.Primary.Address)); ok { + page.Style = s.Value().(*Style) + gotStyle = true + } + + gotProofs = true + if len(page.Entity.Proofs) > 0 { + page.HasProofs = true + proofs := make(Proofs, len(page.Entity.Proofs)) + for i := range page.Entity.Proofs { + p := page.Entity.Proofs[i] + + if s, ok := s.cache.Get(ProofKey(p)); ok { + log.Debug().Str("uri", p).Msg("Proof from cache") + proofs[p] = s.Value().(*Proof) + } else { + log.Debug().Str("uri", p).Msg("Missing proof") + proofs[p] = NewProof(ctx, p, page.Entity.Fingerprint).Proof() + gotProofs = false + } + } + page.Proofs = &proofs + } + + page.IsComplete = gotStyle && gotProofs + } + + // Template and display. + t, err := template.New("identity").Parse(pageTPL) + if err != nil { + WriteText(w, 500, err.Error()) + return + } + err = t.Execute(w, page) + if err != nil { + WriteText(w, 500, err.Error()) + return + } +} + +func (s *identity) getDNS(w http.ResponseWriter, r *http.Request) { + domain := chi.URLParam(r, "domain") + + res, err := net.DefaultResolver.LookupTXT(r.Context(), domain) + if err != nil { + WriteText(w, 400, err.Error()) + return + } + + WriteText(w, 200, strings.Join(res, "\n")) +} + +func (s *identity) getQR(w http.ResponseWriter, r *http.Request) { + log := zlog.Ctx(r.Context()) + + content := r.URL.Query().Get("c") + size := 64 + + sz, _ := strconv.Atoi(r.URL.Query().Get("s")) + + if sz > -10 && sz < 0 { + size = sz + } else if sz > 64 && sz < 4096 { + size = sz + } else if sz > 4096 { + size = 4096 + } + + quality := qrcode.Medium + switch r.URL.Query().Get("r") { + case "L": + quality = qrcode.Low + case "Q": + quality = qrcode.High + case "H": + quality = qrcode.Highest + } + + log.Debug().Str("content", content).Int("size", size).Interface("quality", quality).Int("s", sz).Msg("QRCode") + + png, err := qrcode.Encode(content, quality, size) + if err != nil { + WriteText(w, 400, err.Error()) + return + } + + w.Header().Add("Content-Type", "image/png") + w.WriteHeader(200) + + _, _ = w.Write(png) +} + +func (s *identity) getVCard(w http.ResponseWriter, r *http.Request) { + jid := chi.URLParam(r, "jid") + if _, err := mail.ParseAddress(jid); err != nil { + fmt.Fprint(w, err) + w.WriteHeader(400) + } + + vcard, err := s.conn.GetXMPPVCard(r.Context(), jid) + if err != nil { + fmt.Fprint(w, err) + w.WriteHeader(500) + } + + w.Header().Set("Content-Type", "text/xml") + w.WriteHeader(200) + fmt.Fprint(w, vcard) +} + +func secHeaders(h http.Handler) http.Handler { + return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + w.Header().Set("X-XSS-Protection", "1; mode=block") + w.Header().Set("X-Frame-Options", "DENY") + w.Header().Set("X-Content-Type-Options", "nosniff") + w.Header().Set("X-Content-Type-Options", "nosniff") + + h.ServeHTTP(w, r) + }) +} + +// WriteText writes plain text +func WriteText(w http.ResponseWriter, code int, o string) { + w.Header().Set("Content-Type", "text/plain") + w.WriteHeader(code) + _, _ = w.Write([]byte(o)) +} diff --git a/pkg/keyproofs/style.go b/pkg/keyproofs/style.go new file mode 100644 index 0000000..af0c84d --- /dev/null +++ b/pkg/keyproofs/style.go @@ -0,0 +1,127 @@ +package keyproofs + +import ( + "context" + "crypto/md5" + "fmt" + "net" + "strings" + + "github.com/lucasb-eyer/go-colorful" + "sour.is/x/toolbox/log" +) + +type StyleKey string + +func (s StyleKey) Key() interface{} { + return s +} + +type Style struct { + Avatar, + Cover, + Background string + + Palette []string +} + +func (s *identity) getStyle(ctx context.Context, email string) (*Style, error) { + avatarHost, styleHost, err := styleSRV(ctx, email) + if err != nil { + return nil, err + } + log.Infos("getStyle", "avatar", avatarHost, "style", styleHost) + + hash := md5.New() + email = strings.TrimSpace(strings.ToLower(email)) + _, _ = hash.Write([]byte(email)) + + id := hash.Sum(nil) + + style := &Style{} + + style.Palette = getPalette(fmt.Sprintf("#%x", id[:3])) + style.Avatar = fmt.Sprintf("https://%s/avatar/%x", avatarHost, id) + style.Cover = pixl + style.Background = "https://lavana.sour.is/bg/52548b3dcb032882675afe1e4bcba0e9" + + if styleHost != "" { + style.Cover = fmt.Sprintf("https://%s/cover/%x", styleHost, id) + style.Background = fmt.Sprintf("https://%s/bg/%x", styleHost, id) + } + + return style, err +} + +func styleSRV(ctx context.Context, email string) (avatar string, style string, err error) { + + // Defaults + style = "" + avatar = "www.gravatar.com" + + parts := strings.SplitN(email, "@", 2) + if _, srv, err := net.DefaultResolver.LookupSRV(ctx, "style-sec", "tcp", parts[1]); err == nil { + if len(srv) > 0 { + style = strings.TrimSuffix(srv[0].Target, ".") + avatar = strings.TrimSuffix(srv[0].Target, ".") + + return avatar, style, err + } + } + + if _, srv, err := net.DefaultResolver.LookupSRV(ctx, "avatars-sec", "tcp", parts[1]); err == nil { + if len(srv) > 0 { + avatar = strings.TrimSuffix(srv[0].Target, ".") + + return avatar, style, err + } + } + + return +} + +// getPalette maes a complementary color palette. https://play.golang.org/p/nBXLUocGsU5 +func getPalette(hex string) []string { + reference, _ := colorful.Hex(hex) + reference = sat(lum(reference, 0, .5), 0, .5) + + white := colorful.Color{R: 1, G: 1, B: 1} + black := colorful.Color{R: 0, G: 0, B: 0} + accentA := hue(reference, 60) + accentB := hue(reference, -60) + accentC := hue(reference, -180) + + return append( + []string{}, + + white.Hex(), + lum(reference, .4, .6).Hex(), + reference.Hex(), + lum(reference, .4, 0).Hex(), + black.Hex(), + + lum(accentA, .4, .6).Hex(), + accentA.Hex(), + lum(accentA, .4, 0).Hex(), + + lum(accentB, .4, .6).Hex(), + accentB.Hex(), + lum(accentB, .4, 0).Hex(), + + lum(accentC, .4, .6).Hex(), + accentC.Hex(), + lum(accentC, .4, 0).Hex(), + ) +} +func hue(in colorful.Color, H float64) colorful.Color { + h, s, l := in.Hsl() + return colorful.Hsl(h+H, s, l) +} +func sat(in colorful.Color, S, V float64) colorful.Color { + h, s, l := in.Hsl() + return colorful.Hsl(h, V+s*S, l) +} +func lum(in colorful.Color, L, V float64) colorful.Color { + h, s, l := in.Hsl() + return colorful.Hsl(h, s, V+l*L) +} diff --git a/pkg/keyproofs/template.go b/pkg/keyproofs/template.go new file mode 100644 index 0000000..171531d --- /dev/null +++ b/pkg/keyproofs/template.go @@ -0,0 +1,182 @@ +package keyproofs + +type page struct { + Entity *Entity + Style *Style + Proofs *Proofs + + HasProofs bool + IsComplete bool + Err error +} + +var pageTPL = ` + + + {{if not .IsComplete}}{{end}} + + + + + + + + +{{ with .Style }} + +{{end}} + + + +
+
+
+
+
+ + {{ with .Err }} +
+ +
+ +
+

Something went wrong...

+ 
{{.}}
+
+ {{else}} + {{ with .Style }} +
+ avatar +
+ {{end}} + + + {{with .Entity}} +
+

{{.Primary.Name}}

+

{{.Fingerprint}}

+
+
+ qrcode +
+ {{else}} +
+

Loading...

+

Reading key from remote service.

+
+ {{end}} + + + {{end}} +
+
+
+ +
+ {{ with .Entity }} +
+
Contact
+
+ {{with .Primary}} {{.Name}} <{{.Address}}> Primary{{end}} + {{range .Emails}} {{.Name}} <{{.Address}}>{{end}} +
+
+
+ {{end}} + + {{if .HasProofs}} + {{with .Proofs}} +
+
Proofs
+
    + {{range .}} +
  • +
    +
    + + + {{.Name}} + + + {{if eq .Status 0}} + Checking + {{else if eq .Status 1}} + Error + {{else if eq .Status 2}} + Invalid + {{else if eq .Status 3}} + Verified + {{end}} +
    +
    + {{if eq .Service "xmpp"}} + qrcode + {{end}} +
    +
    +
    • + {{end}} +
+
+
+ {{else}} +
+
Proofs
+
Loading...
+
+
+ {{end}} + {{end}} +
+ +
+ © 2020 Sour.is +
+
+
+ + +` diff --git a/pkg/keyproofs/vcard.go b/pkg/keyproofs/vcard.go new file mode 100644 index 0000000..790c331 --- /dev/null +++ b/pkg/keyproofs/vcard.go @@ -0,0 +1,97 @@ +package keyproofs + +import ( + "context" + "encoding/xml" + "fmt" + + "github.com/rs/zerolog/log" + "gosrc.io/xmpp" + "gosrc.io/xmpp/stanza" +) + +type VCard struct { + XMLName xml.Name `xml:"vcard-temp vCard"` + FullName string `xml:"FN"` + NickName string `xml:"NICKNAME"` + Description string `xml:"DESC"` + URL string `xml:"URL"` +} + +func NewVCard() *VCard { + return &VCard{} +} + +func (c *VCard) Namespace() string { + return c.XMLName.Space +} + +func (c *VCard) GetSet() *stanza.ResultSet { + return nil +} + +func (c *VCard) String() string { + b, _ := xml.MarshalIndent(c, "", " ") + return string(b) +} + +func init() { + stanza.TypeRegistry.MapExtension(stanza.PKTIQ, xml.Name{Space: "vcard-temp", Local: "vCard"}, VCard{}) +} + +type connection struct { + client *xmpp.Client +} + +func NewXMPP(ctx context.Context, config *xmpp.Config) (*connection, error) { + log := log.Ctx(ctx) + router := xmpp.NewRouter() + conn := &connection{} + + var err error + conn.client, err = xmpp.NewClient(config, router, func(err error) { log.Error().Err(err).Send() }) + if err != nil { + return nil, err + } + + go func() { + <-ctx.Done() + err := conn.client.Disconnect() + log.Error().Err(err).Send() + }() + + err = conn.client.Connect() + + return conn, err +} + +func (conn *connection) GetXMPPVCard(ctx context.Context, jid string) (vc *VCard, err error) { + log := log.Ctx(ctx) + + var iq *stanza.IQ + iq, err = stanza.NewIQ(stanza.Attrs{To: jid, Type: "get"}) + if err != nil { + return nil, err + } + iq.Payload = NewVCard() + + var ch chan stanza.IQ + ch, err = conn.client.SendIQ(ctx, iq) + if err != nil { + return nil, err + } + + select { + case result := <-ch: + b, _ := xml.MarshalIndent(result, "", " ") + log.Debug().Msgf("%s", b) + if vcard, ok := result.Payload.(*VCard); ok { + return vcard, nil + } + return nil, fmt.Errorf("bad response: %s", result.Payload) + + case <-ctx.Done(): + } + + return nil, fmt.Errorf("timeout requesting vcard for %s", jid) +} diff --git a/pkg/promise/promise.go b/pkg/promise/promise.go new file mode 100644 index 0000000..29a479e --- /dev/null +++ b/pkg/promise/promise.go @@ -0,0 +1,219 @@ +package promise + +import ( + "context" + "fmt" + "sync" + "time" + + "github.com/rs/zerolog/log" + + "go.uber.org/ratelimit" +) + +type Q interface { + Key() interface{} + Context() context.Context + Resolve(interface{}) + Reject(error) + + Tasker +} +type ResultQ interface { + Key() interface{} + Context() context.Context + Result() interface{} + + Tasker +} +type Fn func(Q) +type AfterFn func(ResultQ) +type Key interface { + Key() interface{} +} + +func typ(v interface{}) string { + return fmt.Sprintf("%T", v) +} + +type qTask struct { + key Key + + fn Fn + ctx context.Context + + cancel func() + done chan struct{} + + result interface{} + err error + + Tasker +} + +func (t *qTask) Key() interface{} { return t.key } +func (t *qTask) Context() context.Context { return t.ctx } +func (t *qTask) Resolve(r interface{}) { t.result = r; t.finish() } +func (t *qTask) Reject(err error) { t.err = err; t.finish() } + +// After runs on successful completion of the task. +func (t *qTask) After(fn AfterFn) { + log := log.Ctx(t.Context()) + + go func() { + defer func() { + if r := recover(); r != nil { + log.Panic().Msgf("%v", r) + } + }() + + <-t.Await() + if err := t.Err(); err != nil { + return + } + fn(t) + }() +} +func (t *qTask) Await() <-chan struct{} { return t.done } +func (t *qTask) Cancel() { t.err = fmt.Errorf("task cancelled"); t.finish() } + +func (t *qTask) Result() interface{} { return t.result } +func (t *qTask) Err() error { return t.err } + +func (t *qTask) finish() { + if t.done == nil { + return + } + + t.cancel() + close(t.done) + t.done = nil +} + +type Option interface { + Apply(*qTask) +} +type OptionFn func(*qTask) + +func (fn OptionFn) Apply(t *qTask) { fn(t) } + +type Tasker interface { + Run(Key, Fn, ...Option) *qTask +} + +type Runner struct { + defaultOpts []Option + queue map[interface{}]*qTask + mu sync.RWMutex + ctx context.Context + cancel func() + pause chan struct{} + limiter ratelimit.Limiter +} + +type Timeout time.Duration + +func (d Timeout) Apply(task *qTask) { + task.ctx, task.cancel = context.WithTimeout(task.ctx, time.Duration(d)) +} + +func (tr *Runner) Run(key Key, fn Fn, opts ...Option) *qTask { + log := log.Ctx(tr.ctx) + + tr.mu.RLock() + log.Trace().Interface(typ(key), key.Key()).Msg("task to run") + + if task, ok := tr.queue[key.Key()]; ok { + tr.mu.RUnlock() + log.Trace().Interface(typ(key), key.Key()).Msg("task found running") + + return task + } + tr.mu.RUnlock() + + task := &qTask{ + key: key, + fn: fn, + cancel: func() {}, + ctx: tr.ctx, + done: make(chan struct{}), + Tasker: tr, + } + + for _, opt := range tr.defaultOpts { + opt.Apply(task) + } + + for _, opt := range opts { + opt.Apply(task) + } + + tr.mu.Lock() + tr.queue[key.Key()] = task + tr.mu.Unlock() + + tr.limiter.Take() + + go func() { + defer func() { + if r := recover(); r != nil { + log.Panic().Msgf("%v", r) + } + + if err := task.Err(); err == nil { + log.Trace().Interface(typ(key), key.Key()).Msg("task complete") + } else { + log.Debug().Interface(typ(key), key.Key()).Err(err).Msg("task Failed") + } + + tr.mu.Lock() + delete(tr.queue, task.Key()) + tr.mu.Unlock() + }() + + log.Trace().Interface(typ(key), key.Key()).Msg("task Running") + + task.fn(task) + }() + + return task +} + +func NewRunner(ctx context.Context, defaultOpts ...Option) *Runner { + ctx, cancel := context.WithCancel(ctx) + + tr := &Runner{ + defaultOpts: defaultOpts, + queue: make(map[interface{}]*qTask), + ctx: ctx, + cancel: cancel, + pause: make(chan struct{}), + limiter: ratelimit.New(10), + } + + return tr +} + +func (tr *Runner) List() []*qTask { + tr.mu.RLock() + defer tr.mu.RUnlock() + + lis := make([]*qTask, 0, len(tr.queue)) + + for _, task := range tr.queue { + lis = append(lis, task) + } + + return lis +} + +func (tr *Runner) Stop() { + tr.cancel() +} + +func (tr *Runner) Len() int { + tr.mu.RLock() + defer tr.mu.RUnlock() + + return len(tr.queue) +} diff --git a/pkg/promise/with-cache.go b/pkg/promise/with-cache.go new file mode 100644 index 0000000..0220cf7 --- /dev/null +++ b/pkg/promise/with-cache.go @@ -0,0 +1,47 @@ +package promise + +import ( + "time" + + "github.com/rs/zerolog/log" + "github.com/sour-is/keyproofs/pkg/cache" +) + +func WithCache(c cache.Cacher, expireAfter time.Duration) OptionFn { + return func(task *qTask) { + innerFn := task.fn + task.fn = func(q Q) { + log := log.Ctx(q.Context()) + + cacheKey, ok := q.Key().(cache.Key) + if !ok { + log.Trace().Interface(typ(q), q.Key()).Msg("not a cache key") + innerFn(q) + + return + } + + if v, ok := c.Get(cacheKey); ok { + log.Trace().Interface(typ(cacheKey), cacheKey.Key()).Msg("task result in cache") + q.Resolve(v.Value()) + + return + } + + log.Trace().Interface(typ(cacheKey), cacheKey.Key()).Msg("task not in cache") + innerFn(q) + + if err := task.Err(); err != nil { + log.Err(err) + + return + } + + // expireAfter = time.Duration(rand.Int63() % int64(5*time.Second)) + result := cache.NewItem(cacheKey, task.Result(), expireAfter) + + log.Trace().Interface(typ(cacheKey), cacheKey.Key()).Msgf("task result to cache") + c.Add(cacheKey, result) + } + } +} diff --git a/version.sh b/version.sh new file mode 100755 index 0000000..b7ccbc1 --- /dev/null +++ b/version.sh @@ -0,0 +1,53 @@ +#!/bin/bash + +# Increment a version string using Semantic Versioning (SemVer) terminology. + +# Parse command line options. + +case $BUMP in + current ) ;; + major ) major=true;; + minor ) minor=true;; + patch ) patch=true;; +esac + +version=$(git describe --tags `git rev-list --tags --max-count=1 2> /dev/null` 2> /dev/null|cut -b2-) + +# Build array from version string. + +a=( ${version//./ } ) + +# If version string is missing or has the wrong number of members, show usage message. + +if [ ${#a[@]} -ne 3 ] +then + version=0.0.0 + a=( ${version//./ } ) +fi + +# Increment version numbers as requested. + +if [ ! -z $major ] +then + ((a[0]++)) + a[1]=0 + a[2]=0 +fi + +if [ ! -z $minor ] +then + ((a[1]++)) + a[2]=0 +fi + +if [ ! -z $patch ] +then + ((a[2]++)) +fi + +if git status --porcelain >/dev/null +then + echo "${a[0]}.${a[1]}.${a[2]}" +else + echo "${a[0]}.${a[1]}.${a[2]}-dirty" +fi \ No newline at end of file