|
|
|
|
@ -5,7 +5,7 @@ |
|
|
|
|
// Implements support for federated avatars lookup.
|
|
|
|
|
// See https://wiki.libravatar.org/api/
|
|
|
|
|
|
|
|
|
|
package libravatar |
|
|
|
|
package libravatar // import "strk.kbt.io/projects/go/libravatar"
|
|
|
|
|
|
|
|
|
|
import ( |
|
|
|
|
"crypto/md5" |
|
|
|
|
@ -16,6 +16,7 @@ import ( |
|
|
|
|
"net/mail" |
|
|
|
|
"net/url" |
|
|
|
|
"strings" |
|
|
|
|
"sync" |
|
|
|
|
"time" |
|
|
|
|
) |
|
|
|
|
|
|
|
|
|
@ -38,7 +39,8 @@ const ( |
|
|
|
|
) |
|
|
|
|
|
|
|
|
|
var ( |
|
|
|
|
// Default object, enabling object-less function calls
|
|
|
|
|
// DefaultLibravatar is a default Libravatar object,
|
|
|
|
|
// enabling object-less function calls
|
|
|
|
|
DefaultLibravatar = New() |
|
|
|
|
) |
|
|
|
|
|
|
|
|
|
@ -53,14 +55,16 @@ type cacheValue struct { |
|
|
|
|
checkedAt time.Time |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Libravatar is an opaque structure holding service configuration
|
|
|
|
|
type Libravatar struct { |
|
|
|
|
defUrl string // default url
|
|
|
|
|
defURL string // default url
|
|
|
|
|
picSize int // picture size
|
|
|
|
|
fallbackHost string // default fallback URL
|
|
|
|
|
secureFallbackHost string // default fallback URL for secure connections
|
|
|
|
|
useHTTPS bool |
|
|
|
|
nameCache map[cacheKey]cacheValue |
|
|
|
|
nameCacheDuration time.Duration |
|
|
|
|
nameCacheMutex *sync.Mutex |
|
|
|
|
minSize uint // smallest image dimension allowed
|
|
|
|
|
maxSize uint // largest image dimension allowed
|
|
|
|
|
size uint // what dimension should be used
|
|
|
|
|
@ -68,7 +72,7 @@ type Libravatar struct { |
|
|
|
|
secureServiceBase string // SRV record to be queried for federation with secure servers
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Instanciate a library handle
|
|
|
|
|
// New instanciates a new Libravatar object (handle)
|
|
|
|
|
func New() *Libravatar { |
|
|
|
|
// According to https://wiki.libravatar.org/running_your_own/
|
|
|
|
|
// the time-to-live (cache expiry) should be set to at least 1 day.
|
|
|
|
|
@ -82,27 +86,28 @@ func New() *Libravatar { |
|
|
|
|
secureServiceBase: `avatars-sec`, |
|
|
|
|
nameCache: make(map[cacheKey]cacheValue), |
|
|
|
|
nameCacheDuration: 24 * time.Hour, |
|
|
|
|
nameCacheMutex: &sync.Mutex{}, |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Set the hostname for fallbacks in case no avatar service is defined
|
|
|
|
|
// for a domain
|
|
|
|
|
// SetFallbackHost sets the hostname for fallbacks in case no avatar
|
|
|
|
|
// service is defined for a domain
|
|
|
|
|
func (v *Libravatar) SetFallbackHost(host string) { |
|
|
|
|
v.fallbackHost = host |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Set the hostname for fallbacks in case no avatar service is defined
|
|
|
|
|
// for a domain, when requiring secure domains
|
|
|
|
|
// SetSecureFallbackHost sets the hostname for fallbacks in case no
|
|
|
|
|
// avatar service is defined for a domain, when requiring secure domains
|
|
|
|
|
func (v *Libravatar) SetSecureFallbackHost(host string) { |
|
|
|
|
v.secureFallbackHost = host |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Set useHTTPS flag
|
|
|
|
|
// SetUseHTTPS sets flag requesting use of https for fetching avatars
|
|
|
|
|
func (v *Libravatar) SetUseHTTPS(use bool) { |
|
|
|
|
v.useHTTPS = use |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Set Avatars image dimension (0 for default)
|
|
|
|
|
// SetAvatarSize sets avatars image dimension (0 for default)
|
|
|
|
|
func (v *Libravatar) SetAvatarSize(size uint) { |
|
|
|
|
v.size = size |
|
|
|
|
} |
|
|
|
|
@ -150,8 +155,8 @@ func (v *Libravatar) process(email *mail.Address, openid *url.URL) (string, erro |
|
|
|
|
res := fmt.Sprintf("%s/avatar/%s", URL, v.genHash(email, openid)) |
|
|
|
|
|
|
|
|
|
values := make(url.Values) |
|
|
|
|
if v.defUrl != "" { |
|
|
|
|
values.Add("d", v.defUrl) |
|
|
|
|
if v.defURL != "" { |
|
|
|
|
values.Add("d", v.defURL) |
|
|
|
|
} |
|
|
|
|
if v.size > 0 { |
|
|
|
|
values.Add("s", fmt.Sprintf("%d", v.size)) |
|
|
|
|
@ -181,7 +186,9 @@ func (v *Libravatar) baseURL(email *mail.Address, openid *url.URL) (string, erro |
|
|
|
|
host := v.getDomain(email, openid) |
|
|
|
|
key := cacheKey{service, host} |
|
|
|
|
now := time.Now() |
|
|
|
|
v.nameCacheMutex.Lock() |
|
|
|
|
val, found := v.nameCache[key] |
|
|
|
|
v.nameCacheMutex.Unlock() |
|
|
|
|
if found && now.Sub(val.checkedAt) <= v.nameCacheDuration { |
|
|
|
|
return protocol + val.target, nil |
|
|
|
|
} |
|
|
|
|
@ -204,53 +211,55 @@ func (v *Libravatar) baseURL(email *mail.Address, openid *url.URL) (string, erro |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
var ( |
|
|
|
|
total_weight uint16 |
|
|
|
|
totalWeight uint16 |
|
|
|
|
records []record |
|
|
|
|
top_priority = addrs[0].Priority |
|
|
|
|
top_record *net.SRV |
|
|
|
|
topPriority = addrs[0].Priority |
|
|
|
|
topRecord *net.SRV |
|
|
|
|
) |
|
|
|
|
|
|
|
|
|
for _, rr := range addrs { |
|
|
|
|
if rr.Priority > top_priority { |
|
|
|
|
if rr.Priority > topPriority { |
|
|
|
|
continue |
|
|
|
|
} else if rr.Priority < top_priority { |
|
|
|
|
} else if rr.Priority < topPriority { |
|
|
|
|
// won't happen, because net sorts
|
|
|
|
|
// by priority, but just in case
|
|
|
|
|
total_weight = 0 |
|
|
|
|
totalWeight = 0 |
|
|
|
|
records = nil |
|
|
|
|
top_priority = rr.Priority |
|
|
|
|
topPriority = rr.Priority |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
total_weight += rr.Weight |
|
|
|
|
totalWeight += rr.Weight |
|
|
|
|
|
|
|
|
|
if rr.Weight > 0 { |
|
|
|
|
records = append(records, record{rr, total_weight}) |
|
|
|
|
records = append(records, record{rr, totalWeight}) |
|
|
|
|
} else if rr.Weight == 0 { |
|
|
|
|
records = append([]record{record{srv: rr, weight: total_weight}}, records...) |
|
|
|
|
records = append([]record{record{srv: rr, weight: totalWeight}}, records...) |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
if len(records) == 1 { |
|
|
|
|
top_record = records[0].srv |
|
|
|
|
topRecord = records[0].srv |
|
|
|
|
} else { |
|
|
|
|
randnum := uint16(rand.Intn(int(total_weight))) |
|
|
|
|
randnum := uint16(rand.Intn(int(totalWeight))) |
|
|
|
|
|
|
|
|
|
for _, rr := range records { |
|
|
|
|
if rr.weight >= randnum { |
|
|
|
|
top_record = rr.srv |
|
|
|
|
topRecord = rr.srv |
|
|
|
|
break |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
domain = fmt.Sprintf("%s:%d", top_record.Target, top_record.Port) |
|
|
|
|
domain = fmt.Sprintf("%s:%d", topRecord.Target, topRecord.Port) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
v.nameCacheMutex.Lock() |
|
|
|
|
v.nameCache[key] = cacheValue{checkedAt: now, target: domain} |
|
|
|
|
v.nameCacheMutex.Unlock() |
|
|
|
|
return protocol + domain, nil |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Return url of the avatar for the given email
|
|
|
|
|
// FromEmail returns the url of the avatar for the given email
|
|
|
|
|
func (v *Libravatar) FromEmail(email string) (string, error) { |
|
|
|
|
addr, err := mail.ParseAddress(email) |
|
|
|
|
if err != nil { |
|
|
|
|
@ -265,12 +274,13 @@ func (v *Libravatar) FromEmail(email string) (string, error) { |
|
|
|
|
return link, nil |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Object-less call to DefaultLibravatar for an email adders
|
|
|
|
|
// FromEmail is the object-less call to DefaultLibravatar for an email adders
|
|
|
|
|
func FromEmail(email string) (string, error) { |
|
|
|
|
return DefaultLibravatar.FromEmail(email) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Return url of the avatar for the given url (typically for OpenID)
|
|
|
|
|
// FromURL returns the url of the avatar for the given url (typically
|
|
|
|
|
// for OpenID)
|
|
|
|
|
func (v *Libravatar) FromURL(openid string) (string, error) { |
|
|
|
|
ourl, err := url.Parse(openid) |
|
|
|
|
if err != nil { |
|
|
|
|
@ -291,7 +301,7 @@ func (v *Libravatar) FromURL(openid string) (string, error) { |
|
|
|
|
return link, nil |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Object-less call to DefaultLibravatar for a URL
|
|
|
|
|
// FromURL is the object-less call to DefaultLibravatar for a URL
|
|
|
|
|
func FromURL(openid string) (string, error) { |
|
|
|
|
return DefaultLibravatar.FromURL(openid) |
|
|
|
|
} |
|
|
|
|
|
guillep2k
5 years ago
committed by
techknowlogick