From: James Prestwood <james.prestwood@linux.intel.com>
To: ell@lists.01.org
Subject: [PATCH 1/2] settings: fix segfault if when settings has no group
Date: Thu, 21 Feb 2019 10:22:15 -0800 [thread overview]
Message-ID: <20190221182216.29956-1-james.prestwood@linux.intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 1454 bytes --]
A settings file containing a key/value but no group caused
l_settings_load_from_data to segfault. This was due to both parse_key
and parse_value not checking that the group was non-NULL.
Also, the return of parse_key was being checked against false, when
it actually is returning a unsigned int. This was changed to just
check !parse_key.
---
ell/settings.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/ell/settings.c b/ell/settings.c
index e3e8303..2153218 100644
--- a/ell/settings.c
+++ b/ell/settings.c
@@ -297,6 +297,9 @@ static unsigned int parse_key(struct l_settings *settings, const char *data,
}
group = l_queue_peek_tail(settings->groups);
+ if (!group)
+ return 0;
+
pair = l_new(struct setting_data, 1);
pair->key = l_strndup(data, end);
l_queue_push_head(group->settings, pair);
@@ -312,6 +315,9 @@ static bool parse_value(struct l_settings *settings, const char *data,
struct setting_data *pair;
group = l_queue_peek_tail(settings->groups);
+ if (!group)
+ return false;
+
pair = l_queue_pop_head(group->settings);
if (!l_utf8_validate(data, len, NULL)) {
@@ -347,7 +353,7 @@ static bool parse_keyvalue(struct l_settings *settings, const char *data,
return false;
}
- if (parse_key(settings, data, equal - data, line) == false)
+ if (!parse_key(settings, data, equal - data, line))
return false;
equal += 1;
--
2.17.1
next reply other threads:[~2019-02-21 18:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-21 18:22 James Prestwood [this message]
2019-02-21 18:22 ` [PATCH 2/2] unit: test-settings: added test with no group James Prestwood
2019-02-21 20:10 ` Denis Kenzior
2019-02-21 20:12 ` [PATCH 1/2] settings: fix segfault if when settings has " Denis Kenzior
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