From 567a75309f69d495ff55a1dc6b43a4774c69fe31 Mon Sep 17 00:00:00 2001
From: cel <cel@lOUVT+Phkvai9a/cCS/RKo+S9hnPAQdVixms/7ldpPA=.ed25519>
Date: Fri, 27 Nov 2020 12:18:06 -0500
Subject: Add mentions for ssb URIs

---
 lib/serve.js           | 42 ++----------------------------------------
 lib/util.js            | 37 +++++++++++++++++++++++++++++++++++++
 vendor/ssb-mentions.js |  6 ++++++
 3 files changed, 45 insertions(+), 40 deletions(-)

diff --git a/lib/serve.js b/lib/serve.js
index 67b57c7..50bfff2 100644
--- a/lib/serve.js
+++ b/lib/serve.js
@@ -25,15 +25,12 @@ var split = require('pull-split')
 var utf8 = require('pull-utf8-decoder')
 var webresolve = require('ssb-web-resolver')
 var Url = require('url')
-var Base64URL = require('base64-url')
 
 module.exports = Serve
 
 var hlCssDir = path.join(require.resolve('highlight.js'), '../../styles')
 
-var ssbURIRegex = /^(ssb:(message|blob|feed)([:\/])([^:?]*?)([:/])([^?]*)(\\?.*)?)$/
 var urlIdRegex = /^(?:\/+(([%&@]|%25|%26)(?:[A-Za-z0-9\/+]|%2[Ff]|%2[Bb]){43}(?:=|%3D)\.(?:sha256|ed25519))([^?]*)?|(\/.*?))(?:\?(.*))?$/
-var gitSsbRepoIdRegex = /^ssb:\/\/(%[A-Za-z0-9\/+]{43}=\.sha256)(\?.*)?$/
 
 function ctype(name) {
   switch (name && /[^.\/]*$/.exec(name)[0] || 'html') {
@@ -451,41 +448,6 @@ Serve.prototype.publishMayRedirect = function (content, cb) {
   }
 }
 
-Serve.prototype.translateFromGitSsbRepoId = function (url) {
-  var m = gitSsbRepoIdRegex.exec(url)
-  if (!m) return
-  var id = m[1]
-  var qs = m[2] || ''
-  return id + qs
-}
-
-Serve.prototype.translateFromURI = function (url) {
-  var m = ssbURIRegex.exec(url)
-  if (!m) return this.translateFromGitSsbRepoId(url)
-  var uri = m[1]
-  var prefix = m[2]
-  var separator = m[3]
-  var format = m[4]
-  var separator2 = m[5]
-  var hash = m[6]
-  var qs = m[7] || ''
-  if (separator !== separator2) return
-  hash = Base64URL.unescape(hash)
-  if (separator === '/') {
-    // ssb-custom-uri
-    try { hash = decodeURIComponent(hash) }
-    catch(e) {}
-  }
-  var sigil
-  switch (prefix) {
-    case 'message': sigil = '%'; break
-    case 'blob': sigil = '&'; break
-    case 'feed': sigil = '@'; break
-    default: return
-  }
-  return sigil + hash + '.' + format + qs
-}
-
 Serve.prototype.handle = function () {
   var m = urlIdRegex.exec(this.req.url)
   this.query = m[5] ? qs.parse(m[5]) : {}
@@ -538,7 +500,7 @@ Serve.prototype.redirect = function (dest) {
 
 Serve.prototype.path = function (url) {
   if (url.substr(0, 5) === '/ssb:') {
-    var link = this.translateFromURI(url.substr(1))
+    var link = u.translateFromURI(url.substr(1))
     if (link) return this.redirect(this.app.render.toUrl(link))
   }
   var m
@@ -774,7 +736,7 @@ Serve.prototype.search = function (ext) {
     var maybeId = searchQ.substr(6)
     if (u.isRef(maybeId)) searchQ = maybeId
   }
-  var link = this.translateFromURI(searchQ)
+  var link = u.translateFromURI(searchQ)
   if (link) return self.redirect(self.app.render.toUrl(link))
 
   if (u.isRef(searchQ) || searchQ[0] === '#') {
diff --git a/lib/util.js b/lib/util.js
index 2fa5c63..e62bde9 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -8,6 +8,8 @@ u.ssbRefRegex = /((?:@|%|&|ssb:\/\/%)[A-Za-z0-9\/+]{43}=\.[\w\d]+)/g
 u.ssbRefRegexOnly = /^(?:@|%|&|ssb:\/\/%)[A-Za-z0-9\/+]{43}=\.[\w\d]+$/
 u.ssbRefEncRegex = /((?:ssb:\/\/)?(?:[@%&]|%26|%40|%25)(?:[A-Za-z0-9\/+]|%2[fF]|%2[bB]){43}(?:=|%3[dD])\.[\w\d]+)/g
 u.channelRegex = /^#[^\s#]+$/
+u.ssbURIRegex = /^(ssb:(message|blob|feed)([:\/])([^:?]*?)([:/])([^?]*)(\\?.*)?)$/
+u.gitSsbRepoIdRegex = /^ssb:\/\/(%[A-Za-z0-9\/+]{43}=\.sha256)(\?.*)?$/
 
 u.isRef = function (str) {
   if (!str) return false
@@ -292,3 +294,38 @@ u.extractHostPort = function (id, addr) {
   }
   return addr
 }
+
+u.translateFromGitSsbRepoId = function (url) {
+  var m = u.gitSsbRepoIdRegex.exec(url)
+  if (!m) return
+  var id = m[1]
+  var qs = m[2] || ''
+  return id + qs
+}
+
+u.translateFromURI = function (url) {
+  var m = u.ssbURIRegex.exec(url)
+  if (!m) return u.translateFromGitSsbRepoId(url)
+  var uri = m[1]
+  var prefix = m[2]
+  var separator = m[3]
+  var format = m[4]
+  var separator2 = m[5]
+  var hash = m[6]
+  var qs = m[7] || ''
+  if (separator !== separator2) return
+  hash = b64url.unescape(hash)
+  if (separator === '/') {
+    // ssb-custom-uri
+    try { hash = decodeURIComponent(hash) }
+    catch(e) {}
+  }
+  var sigil
+  switch (prefix) {
+    case 'message': sigil = '%'; break
+    case 'blob': sigil = '&'; break
+    case 'feed': sigil = '@'; break
+    default: return
+  }
+  return sigil + hash + '.' + format + qs
+}
diff --git a/vendor/ssb-mentions.js b/vendor/ssb-mentions.js
index b01bf9a..37e7678 100644
--- a/vendor/ssb-mentions.js
+++ b/vendor/ssb-mentions.js
@@ -2,6 +2,7 @@
 ssb-mentions
 
 Copyright (c) 2016 Dominic Tarr
+Copyright (c) 2020 Charles Lehner
 
 Permission is hereby granted, free of charge, 
 to any person obtaining a copy of this software and 
@@ -27,6 +28,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 var ref = require('ssb-ref')
 var marked = require('./ssb-marked')
+var u = require('../lib/util')
 function noop(){}
 var onLink = noop
 var extractor = new marked.Renderer()
@@ -91,6 +93,10 @@ module.exports = function (text, opts) {
   var emoji = opts && opts.emoji
   var a = []
   links(text, function (link) {
+    if (link.target && typeof link.target === 'string'
+     && link.target.substr(0, 4) === 'ssb:') {
+      link.target = u.translateFromURI(link.target) || link.target
+    }
     var result = link.target && ref.parseLink(link.target)
     if (result) {
       result.name = link.label && link.label.replace(/^@/, '')
-- 
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