From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Wed, 27 Mar 2013 14:50:56 +0000 (-0400)
Subject: Fix: filter string wildcard comparison
X-Git-Tag: v2.1.3~14
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=26d8b2744961312116c4f060e22f5ec1517786f5;p=lttng-ust.git

Fix: filter string wildcard comparison

wildcards * should match 0 or more characters (not 1 or more).

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/liblttng-ust/lttng-filter-interpreter.c b/liblttng-ust/lttng-filter-interpreter.c
index 4b75f0bc..8d74e7f9 100644
--- a/liblttng-ust/lttng-filter-interpreter.c
+++ b/liblttng-ust/lttng-filter-interpreter.c
@@ -59,17 +59,27 @@ int stack_strcmp(struct estack *stack, int top, const char *cmp_type)
 		int escaped_r0 = 0;
 
 		if (unlikely(p - estack_bx(stack, top)->u.s.str > estack_bx(stack, top)->u.s.seq_len || *p == '\0')) {
-			if (q - estack_ax(stack, top)->u.s.str > estack_ax(stack, top)->u.s.seq_len || *q == '\0')
+			if (q - estack_ax(stack, top)->u.s.str > estack_ax(stack, top)->u.s.seq_len || *q == '\0') {
 				diff = 0;
-			else
-				diff = -1;
+			} else {
+				ret = parse_char(&q);
+				if (ret == -1)
+					diff = 0;
+				else
+					diff = -1;
+			}
 			break;
 		}
 		if (unlikely(q - estack_ax(stack, top)->u.s.str > estack_ax(stack, top)->u.s.seq_len || *q == '\0')) {
-			if (p - estack_bx(stack, top)->u.s.str > estack_bx(stack, top)->u.s.seq_len || *p == '\0')
+			if (p - estack_bx(stack, top)->u.s.str > estack_bx(stack, top)->u.s.seq_len || *p == '\0') {
 				diff = 0;
-			else
-				diff = 1;
+			} else {
+				ret = parse_char(&p);
+				if (ret == -1)
+					diff = 0;
+				else
+					diff = 1;
+			}
 			break;
 		}
 		if (estack_bx(stack, top)->u.s.literal) {