Add cert extraction per https://forum.devolutions.net/topics/34296/problems-registering-rdm-on-linux-closes-at-registration-time

.SRCINFO

@@ -1,11 +1,13 @@
 pkgbase = remote-desktop-manager
 	pkgdesc = Devolutions Remote Desktop Manager Enterprise centralizes all remote connections on a single platform that is securely shared between users and across the entire team.
 	pkgver = 2020.2.4.0
-	pkgrel = 1
+	pkgrel = 2
 	url = https://remotedesktopmanager.com/
+	install = remote-desktop-manager.install
 	arch = x86_64
 	license = Proprietary
 	depends = webkit2gtk
+	depends = p11-kit
 	options = !strip
 	source = RemoteDesktopManager_2020.2.4.0_amd64.deb::https://cdn.devolutions.net/download/Linux/RDM/2020.2.4.0/RemoteDesktopManager_2020.2.4.0_amd64.deb
 	sha256sums = 2b40b621860706546cfb6b3aa1933acbad364068ab692d7ca4709b3ebf521367

PKGBUILD

@@ -1,14 +1,15 @@
 # Maintainer: Thomas Mashos <thomas at mashos dot com>
 pkgname=remote-desktop-manager
 pkgver=2020.2.4.0
-pkgrel=1
+pkgrel=2
 pkgdesc="Devolutions Remote Desktop Manager Enterprise centralizes all remote connections on a single platform that is securely shared between users and across the entire team."
 arch=('x86_64')
 url="https://remotedesktopmanager.com/"
 license=('Proprietary')
 groups=()
-depends=('webkit2gtk')
+depends=('webkit2gtk' 'p11-kit')
 options=(!strip)
+install=${pkgname}.install
 source=("RemoteDesktopManager_${pkgver}_amd64.deb::https://cdn.devolutions.net/download/Linux/RDM/${pkgver}/RemoteDesktopManager_${pkgver}_amd64.deb")
 sha256sums=('2b40b621860706546cfb6b3aa1933acbad364068ab692d7ca4709b3ebf521367')
 

remote-desktop-manager.install

@@ -0,0 +1,21 @@
+# Some colored makepkg-like functions
+msg_blue() {
+    printf "${BLUE}==>${ALL_OFF}${BOLD} ${1}${ALL_OFF}\n"
+}
+
+note() {
+    printf "${BLUE}==>${ALL_OFF}${YELLOW} NOTE:${ALL_OFF}${BOLD} ${1}${ALL_OFF}\n"
+}
+
+ALL_OFF="$(tput sgr0)"
+BOLD="$(tput bold)"
+BLUE="${BOLD}$(tput setaf 4)"
+YELLOW="${BOLD}$(tput setaf 3)"
+
+post_install() {
+    if [ ! -d "/usr/share/.mono/new-certs/Trust" ]; then
+        msg_blue "Extracting ca-anchors.."
+        mkdir -p /usr/share/.mono/new-certs/Trust
+        trust extract --filter=ca-anchors --format=pem-directory-hash --purpose=server-auth /usr/share/.mono/new-certs/Trust/
+    fi
+}