On 21 Feb 2019, at 15:35, Benny Kjær Nielsen wrote:
I still haven't integrated MailMate with images from Contacts, but I
realized that it was fairly easy to use the
[Gravatar](https://www.gravatar.com) service.
One alternative could be use [Libravatar](https://www.libravatar.org/)
and its [federated api](https://wiki.libravatar.org/api/) which makes it
possible to run your own avatar server.
Since MailMate doesn't support the federated api (yet) one could use
Apache installed on macOS to redirect or reverse proxy to different
avatar servers.
I.e. change `headersFormatting.plist` to something like:
```diff
--- headersFormatting-2.plist 2019-03-01 00:18:48.000000000 +0100
+++ headersFormatting.plist 2019-03-01 00:41:08.000000000 +0100
@@ -5,7 +5,7 @@
(
// Gravatar example with link
{
- formatString = "<a
href=\"https://www.gravatar.com/${from.address.#md5}\";><img
style=\"float: left; height: 60px;\"
src=\"https://www.gravatar.com/avatar/${from.address.#md5}\"/></a>";
+ formatString = "<img style=\"float: left; height: 60px;\"
src=\"http://localhost/avatar/${from.address.#md5}?s=60&d=identicon\";
srcset=\"http://localhost/avatar/${from.address.#md5}?s=60&d=identicon
1x, http://localhost/avatar/${from.address.#md5}?s=90&d=identicon
1.5x,http://localhost/avatar/${from.address.#md5}?s=120&d=identicon
2x\"/>";
},
{
separator = { string = "\n"; };
```
and by [using Apache
RewriteMap](https://httpd.apache.org/docs/current/rewrite/rewritemap.html),
redirect
```apache
LoadModule ssl_module libexec/apache2/mod_ssl.so
LoadModule rewrite_module libexec/apache2/mod_rewrite.so
<VirtualHost localhost:80>
CustomLog /var/log/apache2/avatar-rewrite-access.log combined
ErrorLog /var/log/apache2/avatar-rewrite-error.log
SSLProxyEngine On
RewriteEngine On
RewriteMap hash2avatarurl
"txt:/Library/WebServer/hash2avatarurl.txt"
RewriteRule "^/avatar/(.*)"
"${hash2avatarurl:$1|https://www.gravatar.com/avatar/00000000000000000000000000000000}";
[R,L]
</VirtualHost>
```
or reverse proxy
```apache
LoadModule proxy_module libexec/apache2/mod_proxy.so
LoadModule proxy_http_module libexec/apache2/mod_proxy_http.so
LoadModule ssl_module libexec/apache2/mod_ssl.so
LoadModule rewrite_module libexec/apache2/mod_rewrite.so
LoadModule cache_module libexec/apache2/mod_cache.so
LoadModule cache_socache_module libexec/apache2/mod_cache_socache.so
LoadModule socache_shmcb_module libexec/apache2/mod_socache_shmcb.so
<VirtualHost localhost:80>
LogLevel info rewrite:trace3 socache_shmcb:debug
CustomLog /var/log/apache2/avatar-proxy-access.log combined
ErrorLog /var/log/apache2/avatar-proxy-error.log
CacheSocache shmcb:/var/tmp/avatarproxyshmcbcache(512000)
CacheQuickHandler off
CacheStoreExpired On
CacheIgnoreNoLastMod On
CacheIgnoreCacheControl On
CacheDefaultExpire 86400
CacheMinExpire 86400
CacheMaxExpire 604800
CacheHeader On
CacheDetailHeader On
<Location "/avatar">
CacheEnable socache
</Location>
SSLProxyEngine on
RewriteEngine On
RewriteMap hash2avatarurl
"dbm:/Library/WebServer/hash2avatarurl.dbm"
RewriteRule "^/avatar/(.*)"
"${hash2avatarurl:$1|https://www.gravatar.com/avatar/00000000000000000000000000000000}";
[P]
</VirtualHost>
```
where `hash2avatarurl.txt` looks like:
```text
54d652cfd5beed169d4d585b134c65e1
https://secure.gravatar.com/avatar/54d652cfd5beed169d4d585b134c65e1
967b1e0903bb424fdf75fa38bcaf9af0
https://seccdn.libravatar.org/avatar/967b1e0903bb424fdf75fa38bcaf9af0
```
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