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pknock: pknlusr: tighten up variable scopes

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Make global variables local, and move variables local to while-loop into
the loop.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
This commit is contained in:
Jeremy Sowden
2020-10-25 14:15:49 +01:00
committed by Jan Engelhardt
parent b05ea5644c
commit b4faa4de65
1 changed files with 6 additions and 12 deletions
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18
extensions/pknock/pknlusr.c
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@@ -12,22 +12,13 @@
#define GROUP 1 #define GROUP 1
static struct sockaddr_nl local_addr;
static int sock_fd;
static unsigned char *buf;
static struct xt_pknock_nl_msg *nlmsg;
int main(void) int main(void)
{ {
int status; int status;
int group = GROUP; int group = GROUP;
struct sockaddr_nl local_addr;
int buf_size; int sock_fd, buf_size;
unsigned char *buf;
const char *ip;
char ipbuf[48];
sock_fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); sock_fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
@@ -56,6 +47,9 @@ int main(void)
} }
while(1) { while(1) {
struct xt_pknock_nl_msg *nlmsg;
const char *ip;
char ipbuf[48];
memset(buf, 0, buf_size); memset(buf, 0, buf_size);
status = recv(sock_fd, buf, buf_size, 0); status = recv(sock_fd, buf, buf_size, 0);