Bugzilla #46686:

Use temporary directory for the font cache if the user home directory is not write-accessible.
Submitted by: Alok Singh <alok.at.jivesoftware.com>

Modifications to patch by jeremias:
- Bugfix: original code switched to temporary directory if the .fop directory already existed in user home.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@743273 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 21 insertions, 6 deletions

diff --git a/src/java/org/apache/fop/fonts/FontCache.java b/src/java/org/apache/fop/fonts/FontCache.java
index fceeacb7b..9d5eff010 100644
--- a/src/java/org/apache/fop/fonts/FontCache.java
+++ b/src/java/org/apache/fop/fonts/FontCache.java
@@ -81,11 +81,18 @@ public final class FontCache implements Serializable {
     }
 
     private static File getUserHome() {
-        String s = System.getProperty("user.home");
-        if (s != null) {
-            File userDir = new File(s);
-            if (userDir.exists()) {
-                return userDir;
+        return toDirectory(System.getProperty("user.home"));
+    }
+
+    private static File getTempDirectory() {
+        return toDirectory(System.getProperty("java.io.tmpdir"));
+    }
+
+    private static File toDirectory(String path) {
+        if (path != null) {
+            File dir = new File(path);
+            if (dir.exists()) {
+                return dir;
             }
         }
         return null;
@@ -101,7 +108,15 @@ public final class FontCache implements Serializable {
         if (userHome != null) {
             File fopUserDir = new File(userHome, FOP_USER_DIR);
             if (forWriting) {
-                fopUserDir.mkdir();
+                boolean writable = fopUserDir.canWrite();
+                if (!fopUserDir.exists()) {
+                    writable = fopUserDir.mkdir();
+                }
+                if (!writable) {
+                    userHome = getTempDirectory();
+                    fopUserDir = new File(userHome, FOP_USER_DIR);
+                    fopUserDir.mkdir();
+                }
             }
             return new File(fopUserDir, DEFAULT_CACHE_FILENAME);
         }