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authorNicholas Marriott <nicholas.marriott@gmail.com>2013-10-06 21:20:11 +0100
committerNicholas Marriott <nicholas.marriott@gmail.com>2013-10-06 21:20:11 +0100
commitd86c70af965c862651017ab4c288160f37ec654b (patch)
tree88f689e3f2c5a894820624ce103636acfcaf6c3a /client.c
parent4538c269d0b366a770a5a5ebfe0c5007569edbc1 (diff)
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Don't look at string[length - 1] if length == 0.
Diffstat (limited to 'client.c')
-rw-r--r--client.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/client.c b/client.c
index 61791876..90bd40cb 100644
--- a/client.c
+++ b/client.c
@@ -580,7 +580,7 @@ client_dispatch_wait(void *data0)
imsg_free(&imsg);
return (-1);
case MSG_SHELL:
- if (data[datalen - 1] != '\0')
+ if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_SHELL string");
clear_signals(0);
@@ -664,7 +664,7 @@ client_dispatch_attached(void)
kill(getpid(), SIGTSTP);
break;
case MSG_LOCK:
- if (data[datalen - 1] != '\0')
+ if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_LOCK string");
system(data);