master - reporting: validate time parsing with strtol

[Zdenek Kabelac]

Gitweb:        https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=26d97f179fabe0669dc10e...
Commit:        26d97f179fabe0669dc10e7e16398803c323ca93
Parent:        d79d9193298b04246c18dcacd8b372518eb10ffc
Author:        Zdenek Kabelac 
AuthorDate:    Fri Aug 25 11:58:33 2017 +0200
Committer:     Zdenek Kabelac 
CommitterDate: Fri Aug 25 14:20:59 2017 +0200

reporting: validate time parsing with strtol

Check for out-of-range numbers being result of strtol parsing.
---
 lib/report/report.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/lib/report/report.c b/lib/report/report.c
index 89110f0..c32df71 100644
--- a/lib/report/report.c
+++ b/lib/report/report.c
@@ -898,7 +898,12 @@ static int _translate_time_items(struct dm_report *rh, struct time_info *info,
    	id = ti->prop->id;

if (_is_time_num(id)) {
+			errno = 0;
    		num = strtol(ti->s, &end, 10);
+			if (errno) {
+				log_error("_translate_time_items: invalid time.");
+				return 0;
+			}
    		switch (id) {
    			case TIME_NUM_MULTIPLIER_NEGATIVE:
    				multiplier = -num;