parent
4fe04f1adc
commit
f05a3353f4
2
go.mod
2
go.mod
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@ -121,7 +121,7 @@ require (
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gopkg.in/stretchr/testify.v1 v1.2.2 // indirect
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gopkg.in/testfixtures.v2 v2.5.0
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mvdan.cc/xurls/v2 v2.0.0
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strk.kbt.io/projects/go/libravatar v0.0.0-20160628055650-5eed7bff870a
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strk.kbt.io/projects/go/libravatar v0.0.0-20191008002943-06d1c002b251
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xorm.io/builder v0.3.6
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xorm.io/core v0.7.2
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)
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4
go.sum
4
go.sum
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@ -815,8 +815,8 @@ honnef.co/go/tools v0.0.1-2019.2.2/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt
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mvdan.cc/xurls/v2 v2.0.0 h1:r1zSOSNS/kqtpmATyMMMvaZ4/djsesbYz5kr0+qMRWc=
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mvdan.cc/xurls/v2 v2.0.0/go.mod h1:2/webFPYOXN9jp/lzuj0zuAVlF+9g4KPFJANH1oJhRU=
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rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
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strk.kbt.io/projects/go/libravatar v0.0.0-20160628055650-5eed7bff870a h1:8q33ShxKXRwQ7JVd1ZnhIU3hZhwwn0Le+4fTeAackuM=
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strk.kbt.io/projects/go/libravatar v0.0.0-20160628055650-5eed7bff870a/go.mod h1:FJGmPh3vz9jSos1L/F91iAgnC/aejc0wIIrF2ZwJxdY=
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strk.kbt.io/projects/go/libravatar v0.0.0-20191008002943-06d1c002b251 h1:mUcz5b3FJbP5Cvdq7Khzn6J9OCUQJaBwgBkCR+MOwSs=
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strk.kbt.io/projects/go/libravatar v0.0.0-20191008002943-06d1c002b251/go.mod h1:FJGmPh3vz9jSos1L/F91iAgnC/aejc0wIIrF2ZwJxdY=
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xorm.io/builder v0.3.6 h1:ha28mQ2M+TFx96Hxo+iq6tQgnkC9IZkM6D8w9sKHHF8=
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xorm.io/builder v0.3.6/go.mod h1:LEFAPISnRzG+zxaxj2vPicRwz67BdhFreKg8yv8/TgU=
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xorm.io/core v0.7.2-0.20190928055935-90aeac8d08eb h1:msX3zG3BPl8Ti+LDzP33/9K7BzO/WqFXk610K1kYKfo=
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@ -612,7 +612,7 @@ gopkg.in/warnings.v0
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gopkg.in/yaml.v2
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# mvdan.cc/xurls/v2 v2.0.0
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mvdan.cc/xurls/v2
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# strk.kbt.io/projects/go/libravatar v0.0.0-20160628055650-5eed7bff870a
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# strk.kbt.io/projects/go/libravatar v0.0.0-20191008002943-06d1c002b251
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strk.kbt.io/projects/go/libravatar
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# xorm.io/builder v0.3.6
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xorm.io/builder
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@ -0,0 +1,12 @@
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PACKAGES ?= $(shell go list ./...)
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.PHONY: check
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check: lint
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go test
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.PHONY: lint
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lint:
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@which golint > /dev/null; if [ $$? -ne 0 ]; then \
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go get -u github.com/golang/lint/golint; \
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fi
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@for PKG in $(PACKAGES); do golint -set_exit_status $$PKG || exit 1; done;
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@ -1,12 +1,14 @@
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Simple [golang](https://www.golang.org) library for serving
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[federated avatars](https://www.libravatar.org)
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[![trunk](https://goreportcard.com/badge/strk.kbt.io/projects/go/libravatar)]
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(https://goreportcard.com/report/strk.kbt.io/projects/go/libravatar)
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# Use
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```sh
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go get strk.kbt.io/projects/go/libravatar
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cd $GOPATH/src/strk.kbt.io/projects/go/libravatar
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go doc
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go doc strk.kbt.io/projects/go/libravatar
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```
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# Contribute
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@ -5,7 +5,7 @@
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// Implements support for federated avatars lookup.
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// See https://wiki.libravatar.org/api/
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package libravatar
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package libravatar // import "strk.kbt.io/projects/go/libravatar"
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import (
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"crypto/md5"
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@ -16,6 +16,7 @@ import (
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"net/mail"
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"net/url"
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"strings"
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"sync"
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"time"
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)
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@ -38,7 +39,8 @@ const (
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)
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var (
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// Default object, enabling object-less function calls
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// DefaultLibravatar is a default Libravatar object,
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// enabling object-less function calls
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DefaultLibravatar = New()
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)
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@ -53,14 +55,16 @@ type cacheValue struct {
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checkedAt time.Time
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}
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// Libravatar is an opaque structure holding service configuration
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type Libravatar struct {
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defUrl string // default url
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defURL string // default url
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picSize int // picture size
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fallbackHost string // default fallback URL
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secureFallbackHost string // default fallback URL for secure connections
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useHTTPS bool
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nameCache map[cacheKey]cacheValue
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nameCacheDuration time.Duration
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nameCacheMutex *sync.Mutex
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minSize uint // smallest image dimension allowed
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maxSize uint // largest image dimension allowed
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size uint // what dimension should be used
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@ -68,7 +72,7 @@ type Libravatar struct {
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secureServiceBase string // SRV record to be queried for federation with secure servers
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}
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// Instanciate a library handle
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// New instanciates a new Libravatar object (handle)
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func New() *Libravatar {
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// According to https://wiki.libravatar.org/running_your_own/
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// the time-to-live (cache expiry) should be set to at least 1 day.
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secureServiceBase: `avatars-sec`,
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nameCache: make(map[cacheKey]cacheValue),
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nameCacheDuration: 24 * time.Hour,
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nameCacheMutex: &sync.Mutex{},
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}
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}
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// Set the hostname for fallbacks in case no avatar service is defined
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// for a domain
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// SetFallbackHost sets the hostname for fallbacks in case no avatar
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// service is defined for a domain
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func (v *Libravatar) SetFallbackHost(host string) {
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v.fallbackHost = host
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}
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// Set the hostname for fallbacks in case no avatar service is defined
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// for a domain, when requiring secure domains
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// SetSecureFallbackHost sets the hostname for fallbacks in case no
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// avatar service is defined for a domain, when requiring secure domains
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func (v *Libravatar) SetSecureFallbackHost(host string) {
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v.secureFallbackHost = host
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}
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// Set useHTTPS flag
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// SetUseHTTPS sets flag requesting use of https for fetching avatars
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func (v *Libravatar) SetUseHTTPS(use bool) {
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v.useHTTPS = use
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}
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// Set Avatars image dimension (0 for default)
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// SetAvatarSize sets avatars image dimension (0 for default)
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func (v *Libravatar) SetAvatarSize(size uint) {
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v.size = size
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}
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res := fmt.Sprintf("%s/avatar/%s", URL, v.genHash(email, openid))
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values := make(url.Values)
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if v.defUrl != "" {
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values.Add("d", v.defUrl)
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if v.defURL != "" {
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values.Add("d", v.defURL)
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}
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if v.size > 0 {
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values.Add("s", fmt.Sprintf("%d", v.size))
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host := v.getDomain(email, openid)
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key := cacheKey{service, host}
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now := time.Now()
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v.nameCacheMutex.Lock()
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val, found := v.nameCache[key]
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v.nameCacheMutex.Unlock()
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if found && now.Sub(val.checkedAt) <= v.nameCacheDuration {
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return protocol + val.target, nil
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}
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}
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var (
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total_weight uint16
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totalWeight uint16
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records []record
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top_priority = addrs[0].Priority
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top_record *net.SRV
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topPriority = addrs[0].Priority
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topRecord *net.SRV
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)
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for _, rr := range addrs {
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if rr.Priority > top_priority {
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if rr.Priority > topPriority {
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continue
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} else if rr.Priority < top_priority {
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} else if rr.Priority < topPriority {
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// won't happen, because net sorts
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// by priority, but just in case
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total_weight = 0
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totalWeight = 0
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records = nil
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top_priority = rr.Priority
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topPriority = rr.Priority
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}
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total_weight += rr.Weight
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totalWeight += rr.Weight
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if rr.Weight > 0 {
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records = append(records, record{rr, total_weight})
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records = append(records, record{rr, totalWeight})
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} else if rr.Weight == 0 {
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records = append([]record{record{srv: rr, weight: total_weight}}, records...)
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records = append([]record{record{srv: rr, weight: totalWeight}}, records...)
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}
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}
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if len(records) == 1 {
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top_record = records[0].srv
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topRecord = records[0].srv
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} else {
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randnum := uint16(rand.Intn(int(total_weight)))
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randnum := uint16(rand.Intn(int(totalWeight)))
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for _, rr := range records {
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if rr.weight >= randnum {
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top_record = rr.srv
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topRecord = rr.srv
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break
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}
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}
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}
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domain = fmt.Sprintf("%s:%d", top_record.Target, top_record.Port)
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domain = fmt.Sprintf("%s:%d", topRecord.Target, topRecord.Port)
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}
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v.nameCacheMutex.Lock()
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v.nameCache[key] = cacheValue{checkedAt: now, target: domain}
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v.nameCacheMutex.Unlock()
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return protocol + domain, nil
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}
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// Return url of the avatar for the given email
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// FromEmail returns the url of the avatar for the given email
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func (v *Libravatar) FromEmail(email string) (string, error) {
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addr, err := mail.ParseAddress(email)
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if err != nil {
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return link, nil
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}
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// Object-less call to DefaultLibravatar for an email adders
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// FromEmail is the object-less call to DefaultLibravatar for an email adders
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func FromEmail(email string) (string, error) {
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return DefaultLibravatar.FromEmail(email)
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}
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// Return url of the avatar for the given url (typically for OpenID)
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// FromURL returns the url of the avatar for the given url (typically
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// for OpenID)
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func (v *Libravatar) FromURL(openid string) (string, error) {
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ourl, err := url.Parse(openid)
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if err != nil {
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return link, nil
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}
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// Object-less call to DefaultLibravatar for a URL
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// FromURL is the object-less call to DefaultLibravatar for a URL
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func FromURL(openid string) (string, error) {
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return DefaultLibravatar.FromURL(openid)
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}
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Loading…
Reference in New Issue