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Don't look at string[length - 1] if length == 0.

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This commit is contained in:
nicm
2013-10-10 12:27:38 +00:00
parent 282c5f9644
commit b8b85fbb0c
2 changed files with 5 additions and 5 deletions
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6
server-client.c
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@@ -961,12 +961,12 @@ server_client_msg_identify(struct client *c, struct imsg *imsg)
c->flags |= flags;
break;
case MSG_IDENTIFY_TERM:
if (data[datalen - 1] != '\0')
if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_TERM string");
c->term = xstrdup(data);
break;
case MSG_IDENTIFY_TTYNAME:
if (data[datalen - 1] != '\0')
if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_TTYNAME string");
c->ttyname = xstrdup(data);
break;
@@ -981,7 +981,7 @@ server_client_msg_identify(struct client *c, struct imsg *imsg)
c->fd = imsg->fd;
break;
case MSG_IDENTIFY_ENVIRON:
if (data[datalen - 1] != '\0')
if (datalen == 0 || data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_ENVIRON string");
if (strchr(data, '=') != NULL)
environ_put(&c->environ, data);