From 157782da6638501baed2e0cf4999115816efb352 Mon Sep 17 00:00:00 2001
From: Gabriele Gristina <matrix@users.noreply.github.com>
Date: Sat, 2 Nov 2024 04:51:46 +0100
Subject: [PATCH] Improve Purge rule backwards compatibility (v2)

---
 src/rp.c     | 4 ++++
 src/rp_cpu.c | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/rp.c b/src/rp.c
index bdeaa4e65..a5153cefd 100644
--- a/src/rp.c
+++ b/src/rp.c
@@ -398,6 +398,10 @@ int cpu_rule_to_kernel_rule (char *rule_buf, u32 rule_len, kernel_rule_t *rule)
           }
 
           switch (rule_buf[rule_pos+2]) {
+            case '\'':
+              SET_NAME (rule, rule_buf[rule_pos]);
+              SET_P0   (rule, rule_buf[rule_pos]);
+              break;
             case ' ':
             case '?':
               SET_NAME (rule, rule_buf[rule_pos]);
diff --git a/src/rp_cpu.c b/src/rp_cpu.c
index da4fd38c0..05d54df3e 100644
--- a/src/rp_cpu.c
+++ b/src/rp_cpu.c
@@ -822,7 +822,7 @@ int _old_apply_rule (const char *rule, int rule_len, char in[RP_PASSWORD_SIZE],
 
         if (rule_new[rule_pos] == '?')
         {
-          if ((rule_pos + 1) == rule_len_new)
+          if ((rule_pos + 1) == rule_len_new || ((rule_pos + 1) < rule_len_new && rule_new[rule_pos+1] == '\''))
           {
             out_len = mangle_purgechar (out, out_len, rule_new[rule_pos]);
             break;