Add uninstaller that can optionally remove all package files

Includes files in the new permanent storage (/var) and home folder

Author: publicarray

mk/spksrc.service.installer.dsm7

@@ -172,8 +172,18 @@ postuninst ()
     call_func "service_postuninst"
     call_func "service_remove_links"
 
-    if [ "${SYNOPKG_PKG_STATUS}" == "UNINSTALL" ]; then
-        $RM "${INST_VARIABLES}"
+    if [ "$wizard_delete_data" ]; then
+        if [ "$(ls -A ${SYNOPKG_PKGHOME})" ]; then
+            rm -rf ${SYNOPKG_PKGHOME}/.
+        fi
+
+        if [ "$(ls -A ${SYNOPKG_PKGVAR})" ]; then
+            rm -rf ${SYNOPKG_PKGVAR}/.
+        fi
+
+        if [ "$(ls -A ${SYNOPKG_PKGTMP})" ]; then
+            rm -rf ${SYNOPKG_PKGTMP}/.
+        fi
     fi
     exit 0
 }

mk/spksrc.spk.mk

@@ -296,14 +296,17 @@ info-checksum:
 
 .PHONY: wizards
 wizards:
-ifneq ($(strip $(WIZARDS_DIR)),)
 	@$(MSG) "Preparing DSM Wizards"
 	@mkdir -p $(DSM_WIZARDS_DIR)
+ifneq ($(strip $(WIZARDS_DIR)),)
 	@find $${SPKSRC_WIZARDS_DIR} -maxdepth 1 -type f -and \( -name "install_uifile" -or -name "install_uifile_???" -or -name "install_uifile.sh" -or -name "install_uifile_???.sh" -or -name "upgrade_uifile" -or -name "upgrade_uifile_???" -or -name "upgrade_uifile.sh" -or -name "upgrade_uifile_???.sh" -or -name "uninstall_uifile" -or -name "uninstall_uifile_???" -or -name "uninstall_uifile.sh" -or -name "uninstall_uifile_???.sh" \) -print -exec cp -f {} $(DSM_WIZARDS_DIR) \;
+endif
+ifeq ($(shell expr "$(TCVERSION)" \>= 7.0),1)
+	@find $(SPKSRC_MK)wizard -maxdepth 1 -type f -and \( -name "uninstall_uifile" -or -name "uninstall_uifile_???" \) -print -exec cp -f {} $(DSM_WIZARDS_DIR) \;
+endif
 	@find $(DSM_WIZARDS_DIR) -maxdepth 1 -type f -not -name "*.sh" -print -exec chmod 0644 {} \;
 	@find $(DSM_WIZARDS_DIR) -maxdepth 1 -type f -name "*.sh" -print -exec chmod 0755 {} \;
 	$(eval SPK_CONTENT += WIZARD_UIFILES)
-endif
 
 .PHONY: conf
 conf:

mk/wizard/uninstall_uifile

@@ -0,0 +1,16 @@
+[{
+  "step_title": "Uninstall package",
+  "items": [{
+    "type": "singleselect",
+    "desc": "Keep or delete package settings.",
+    "subitems": [{
+      "key": "wizard_keep_data",
+      "desc": "<b>Uninstall only.</b> Keep existing files for future re-installation.",
+      "defaultValue": true
+    }, {
+      "key": "wizard_delete_data",
+      "desc": "<b style=\"color: red\">Erase all of the package data files. (Not Recoverable)</b>",
+      "defaultValue": false
+    }]
+  }]
+}]