From d25e919f29078127b0305f88cdcbc33a798c5d90 Mon Sep 17 00:00:00 2001
From: Nikias Bassen
Date: Wed, 6 Apr 2022 01:04:50 +0200
Subject: Skip whitespace to properly detect format in plist_from_memory()

---
 src/plist.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/plist.c b/src/plist.c
index 9f3c8f4..78e71da 100644
--- a/src/plist.c
+++ b/src/plist.c
@@ -199,10 +199,15 @@ PLIST_API plist_err_t plist_from_memory(const char *plist_data, uint32_t length,
     }
     if (plist_is_binary(plist_data, length)) {
         res = plist_from_bin(plist_data, length, plist);
-    } else if (plist_data[0] == '[' || plist_data[0] == '{') {
-        res = plist_from_json(plist_data, length, plist);
     } else {
-        res = plist_from_xml(plist_data, length, plist);
+        /* skip whitespace before checking */
+        uint32_t pos = 0;
+        while (pos < length && ((plist_data[pos] == ' ') || (plist_data[pos] == '\t') || (plist_data[pos] == '\r') || (plist_data[pos] == '\n'))) pos++;
+        if (plist_data[pos] == '[' || plist_data[pos] == '{') {
+            res = plist_from_json(plist_data, length, plist);
+        } else {
+            res = plist_from_xml(plist_data, length, plist);
+        }
     }
     return res;
 }
-- 
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