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diff --git a/libnozzle/internals.h b/libnozzle/internals.h
index ab870ef7..c9192a81 100644
--- a/libnozzle/internals.h
+++ b/libnozzle/internals.h
@@ -1,69 +1,69 @@
/*
* Copyright (C) 2017-2019 Red Hat, Inc. All rights reserved.
*
* Author: Fabio M. Di Nitto <fabbione@kronosnet.org>
*
* This software licensed under LGPL-2.0+
*/
#ifndef __NOZZLE_INTERNALS_H__
#define __NOZZLE_INTERNALS_H__
#include "config.h"
#ifdef KNET_LINUX
#include <netlink/netlink.h>
#endif
#include <net/if.h>
#include "libnozzle.h"
struct nozzle_lib_config {
struct nozzle_iface *head;
int ioctlfd;
#ifdef KNET_LINUX
struct nl_sock *nlsock;
#endif
};
#define MACADDR_CHAR_MAX 18
/*
* 11 = post-down.d
* 1 = /
*/
#define UPDOWN_PATH_MAX PATH_MAX - 11 - 1 - IFNAMSIZ
struct nozzle_iface {
- char name[IFNAMSIZ - 1]; /* interface name */
+ char name[IFNAMSIZ]; /* interface name */
int fd; /* interface fd */
int up; /* interface status 0 is down, 1 is up */
/*
* extra data
*/
struct nozzle_ip *ip; /* configured ip addresses */
/*
* default MAC address assigned by the kernel at creation time
*/
char default_mac[MACADDR_CHAR_MAX + 1];
int default_mtu; /* MTU assigned by the kernel at creation time */
int current_mtu; /* MTU configured by libnozzle user */
int hasupdown; /* interface has up/down path to scripts configured */
char updownpath[UPDOWN_PATH_MAX]; /* path to up/down scripts if configured */
struct nozzle_iface *next;
};
#define ifname ifr.ifr_name
int execute_bin_sh_command(const char *command, char **error_string);
int find_ip(nozzle_t nozzle,
const char *ipaddr, const char *prefix,
struct nozzle_ip **ip, struct nozzle_ip **ip_prev);
char *generate_v4_broadcast(const char *ipaddr, const char *prefix);
#endif
diff --git a/libnozzle/libnozzle.c b/libnozzle/libnozzle.c
index 3a1f827c..61096096 100644
--- a/libnozzle/libnozzle.c
+++ b/libnozzle/libnozzle.c
@@ -1,1225 +1,1225 @@
/*
* Copyright (C) 2010-2019 Red Hat, Inc. All rights reserved.
*
* Author: Fabio M. Di Nitto <fabbione@kronosnet.org>
*
* This software licensed under LGPL-2.0+
*/
#include "config.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <net/ethernet.h>
#include <pthread.h>
#include <limits.h>
#include <stdio.h>
#include <net/if.h>
#include <ifaddrs.h>
#include <stdint.h>
#ifdef KNET_LINUX
#include <linux/if_tun.h>
/*
* libnl3 < 3.3 includes kernel headers directly
* causing conflicts with net/if.h included above
*/
#ifdef LIBNL3_WORKAROUND
#define _LINUX_IF_H 1
#endif
#include <netinet/ether.h>
#include <netlink/netlink.h>
#include <netlink/route/addr.h>
#include <netlink/route/link.h>
#endif
#ifdef KNET_BSD
#include <net/if_dl.h>
#endif
#include "libnozzle.h"
#include "internals.h"
/*
* internal functions are all _unlocked_
* locking should be handled at external API functions
*/
static int lib_init = 0;
static struct nozzle_lib_config lib_cfg;
static pthread_mutex_t config_mutex = PTHREAD_MUTEX_INITIALIZER;
/*
* internal helpers
*/
static void lib_fini(void)
{
if (lib_cfg.head == NULL) {
#ifdef KNET_LINUX
nl_close(lib_cfg.nlsock);
nl_socket_free(lib_cfg.nlsock);
#endif
close(lib_cfg.ioctlfd);
lib_init = 0;
}
}
static int is_valid_nozzle(const nozzle_t nozzle)
{
nozzle_t temp;
if (!nozzle) {
return 0;
}
if (!lib_init) {
return 0;
}
temp = lib_cfg.head;
while (temp != NULL) {
if (nozzle == temp)
return 1;
temp = temp->next;
}
return 0;
}
static void destroy_iface(nozzle_t nozzle)
{
#ifdef KNET_BSD
struct ifreq ifr;
#endif
if (!nozzle)
return;
if (nozzle->fd >= 0)
close(nozzle->fd);
#ifdef KNET_BSD
memset(&ifr, 0, sizeof(struct ifreq));
- strncpy(ifname, nozzle->name, IFNAMSIZ);
+ memmove(ifname, nozzle->name, IFNAMSIZ);
ioctl(lib_cfg.ioctlfd, SIOCIFDESTROY, &ifr);
#endif
free(nozzle);
lib_fini();
return;
}
static int get_iface_mtu(const nozzle_t nozzle)
{
int err = 0, savederrno = 0;
struct ifreq ifr;
memset(&ifr, 0, sizeof(struct ifreq));
- strncpy(ifname, nozzle->name, IFNAMSIZ);
+ memmove(ifname, nozzle->name, IFNAMSIZ);
err = ioctl(lib_cfg.ioctlfd, SIOCGIFMTU, &ifr);
if (err) {
savederrno = errno;
goto out_clean;
}
err = ifr.ifr_mtu;
out_clean:
errno = savederrno;
return err;
}
static int get_iface_mac(const nozzle_t nozzle, char **ether_addr)
{
int err = 0, savederrno = 0;
struct ifreq ifr;
char mac[MACADDR_CHAR_MAX];
#ifdef KNET_BSD
struct ifaddrs *ifap = NULL;
struct ifaddrs *ifa;
int found = 0;
#endif
memset(&mac, 0, MACADDR_CHAR_MAX);
memset(&ifr, 0, sizeof(struct ifreq));
- strncpy(ifname, nozzle->name, IFNAMSIZ);
+ memmove(ifname, nozzle->name, IFNAMSIZ);
#ifdef KNET_LINUX
err = ioctl(lib_cfg.ioctlfd, SIOCGIFHWADDR, &ifr);
if (err) {
savederrno = errno;
goto out_clean;
}
ether_ntoa_r((struct ether_addr *)ifr.ifr_hwaddr.sa_data, mac);
#endif
#ifdef KNET_BSD
/*
* there is no ioctl to get the ether address of an interface on FreeBSD
* (not to be confused with hwaddr). Use workaround described here:
* https://lists.freebsd.org/pipermail/freebsd-hackers/2004-June/007394.html
*/
err = getifaddrs(&ifap);
if (err < 0) {
savederrno = errno;
goto out_clean;
}
ifa = ifap;
while (ifa) {
if (!strncmp(nozzle->name, ifa->ifa_name, IFNAMSIZ)) {
found = 1;
break;
}
ifa=ifa->ifa_next;
}
if (found) {
ether_ntoa_r((struct ether_addr *)LLADDR((struct sockaddr_dl *)ifa->ifa_addr), mac);
} else {
errno = EINVAL;
err = -1;
}
freeifaddrs(ifap);
if (err) {
goto out_clean;
}
#endif
*ether_addr = strdup(mac);
if (!*ether_addr) {
savederrno = errno;
err = -1;
}
out_clean:
errno = savederrno;
return err;
}
#define IP_ADD 1
#define IP_DEL 2
static int _set_ip(nozzle_t nozzle,
int command,
const char *ipaddr, const char *prefix,
int secondary)
{
int fam;
char *broadcast = NULL;
int err = 0;
#ifdef KNET_LINUX
struct rtnl_addr *addr = NULL;
struct nl_addr *local_addr = NULL;
struct nl_addr *bcast_addr = NULL;
struct nl_cache *cache = NULL;
int ifindex;
#endif
#ifdef KNET_BSD
char cmdline[4096];
char proto[6];
char *error_string = NULL;
#endif
if (!strchr(ipaddr, ':')) {
fam = AF_INET;
broadcast = generate_v4_broadcast(ipaddr, prefix);
if (!broadcast) {
errno = EINVAL;
return -1;
}
} else {
fam = AF_INET6;
}
#ifdef KNET_LINUX
addr = rtnl_addr_alloc();
if (!addr) {
errno = ENOMEM;
err = -1;
goto out;
}
if (rtnl_link_alloc_cache(lib_cfg.nlsock, AF_UNSPEC, &cache) < 0) {
errno = ENOMEM;
err = -1;
goto out;
}
ifindex = rtnl_link_name2i(cache, nozzle->name);
if (ifindex == 0) {
errno = ENOENT;
err = -1;
goto out;
}
rtnl_addr_set_ifindex(addr, ifindex);
if (nl_addr_parse(ipaddr, fam, &local_addr) < 0) {
errno = EINVAL;
err = -1;
goto out;
}
if (rtnl_addr_set_local(addr, local_addr) < 0) {
errno = EINVAL;
err = -1;
goto out;
}
if (broadcast) {
if (nl_addr_parse(broadcast, fam, &bcast_addr) < 0) {
errno = EINVAL;
err = -1;
goto out;
}
if (rtnl_addr_set_broadcast(addr, bcast_addr) < 0) {
errno = EINVAL;
err = -1;
goto out;
}
}
rtnl_addr_set_prefixlen(addr, atoi(prefix));
if (command == IP_ADD) {
if (rtnl_addr_add(lib_cfg.nlsock, addr, 0) < 0) {
errno = EINVAL;
err = -1;
goto out;
}
} else {
if (rtnl_addr_delete(lib_cfg.nlsock, addr, 0) < 0) {
errno = EINVAL;
err = -1;
goto out;
}
}
out:
if (addr) {
rtnl_addr_put(addr);
}
if (local_addr) {
nl_addr_put(local_addr);
}
if (bcast_addr) {
nl_addr_put(bcast_addr);
}
if (cache) {
nl_cache_put(cache);
}
if (broadcast) {
free(broadcast);
}
return err;
#endif
#ifdef KNET_BSD
/*
* TODO: port to use ioctl and such, drop shell forking here
*/
memset(cmdline, 0, sizeof(cmdline));
if (fam == AF_INET) {
snprintf(proto, sizeof(proto), "inet");
} else {
snprintf(proto, sizeof(proto), "inet6");
}
if (command == IP_ADD) {
snprintf(cmdline, sizeof(cmdline)-1,
"ifconfig %s %s %s/%s",
nozzle->name, proto, ipaddr, prefix);
if (broadcast) {
snprintf(cmdline + strlen(cmdline),
sizeof(cmdline) - strlen(cmdline) -1,
" broadcast %s", broadcast);
}
if ((secondary) && (fam == AF_INET)) {
snprintf(cmdline + strlen(cmdline),
sizeof(cmdline) - strlen(cmdline) -1,
" alias");
}
} else {
snprintf(cmdline, sizeof(cmdline)-1,
"ifconfig %s %s %s/%s delete",
nozzle->name, proto, ipaddr, prefix);
}
if (broadcast) {
free(broadcast);
}
/*
* temporary workaround as we port libnozzle to BSD ioctl
* for IP address management
*/
err = execute_bin_sh_command(cmdline, &error_string);
if (error_string) {
free(error_string);
error_string = NULL;
}
return err;
#endif
}
/*
* Exported public API
*/
nozzle_t nozzle_open(char *devname, size_t devname_size, const char *updownpath)
{
int savederrno = 0;
nozzle_t nozzle = NULL;
char *temp_mac = NULL;
#ifdef KNET_LINUX
struct ifreq ifr;
#endif
#ifdef KNET_BSD
uint16_t i;
long int nozzlenum = 0;
char curnozzle[IFNAMSIZ];
#endif
if (devname == NULL) {
errno = EINVAL;
return NULL;
}
if (devname_size < IFNAMSIZ) {
errno = EINVAL;
return NULL;
}
/* Need to allow space for trailing NUL */
if (strlen(devname) >= IFNAMSIZ) {
errno = E2BIG;
return NULL;
}
#ifdef KNET_BSD
/*
* BSD does not support named devices like Linux
* but it is possible to force a nozzleX device number
* where X is 0 to 255.
*/
if (strlen(devname)) {
if (strncmp(devname, "tap", 3)) {
errno = EINVAL;
return NULL;
}
errno = 0;
nozzlenum = strtol(devname+3, NULL, 10);
if (errno) {
errno = EINVAL;
return NULL;
}
if ((nozzlenum < 0) || (nozzlenum > 255)) {
errno = EINVAL;
return NULL;
}
}
#endif
if (updownpath) {
/* only absolute paths */
if (updownpath[0] != '/') {
errno = EINVAL;
return NULL;
}
if (strlen(updownpath) >= UPDOWN_PATH_MAX) {
errno = E2BIG;
return NULL;
}
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return NULL;
}
if (!lib_init) {
lib_cfg.head = NULL;
#ifdef KNET_LINUX
lib_cfg.nlsock = nl_socket_alloc();
if (!lib_cfg.nlsock) {
savederrno = errno;
goto out_error;
}
if (nl_connect(lib_cfg.nlsock, NETLINK_ROUTE) < 0) {
savederrno = EBUSY;
goto out_error;
}
lib_cfg.ioctlfd = socket(AF_INET, SOCK_STREAM, 0);
#endif
#ifdef KNET_BSD
lib_cfg.ioctlfd = socket(AF_LOCAL, SOCK_DGRAM, 0);
#endif
if (lib_cfg.ioctlfd < 0) {
savederrno = errno;
goto out_error;
}
lib_init = 1;
}
nozzle = malloc(sizeof(struct nozzle_iface));
if (!nozzle) {
savederrno = ENOMEM;
goto out_error;
}
memset(nozzle, 0, sizeof(struct nozzle_iface));
#ifdef KNET_BSD
if (!strlen(devname)) {
/*
* FreeBSD 13 kernel has changed how the tap module
* works and tap0 cannot be removed from the system.
* This means that tap0 settings are never reset to default
* and nozzle cannot control the default state of the device
* when taking over.
* nozzle expects some parameters to be default when opening
* a tap device (such as random mac address, default MTU, no
* other attributes, etc.)
*
* For 13 and higher, simply skip tap0 as usable device.
*/
#if __FreeBSD__ >= 13
for (i = 1; i < 256; i++) {
#else
for (i = 0; i < 256; i++) {
#endif
snprintf(curnozzle, sizeof(curnozzle) - 1, "/dev/tap%u", i);
nozzle->fd = open(curnozzle, O_RDWR);
savederrno = errno;
if (nozzle->fd > 0) {
break;
}
}
snprintf(curnozzle, sizeof(curnozzle) -1 , "tap%u", i);
} else {
snprintf(curnozzle, sizeof(curnozzle) - 1, "/dev/%s", devname);
nozzle->fd = open(curnozzle, O_RDWR);
savederrno = errno;
snprintf(curnozzle, sizeof(curnozzle) - 1, "%s", devname);
}
if (nozzle->fd < 0) {
savederrno = EBUSY;
goto out_error;
}
- strncpy(devname, curnozzle, IFNAMSIZ);
- memmove(nozzle->name, curnozzle, IFNAMSIZ - 1);
+ memmove(devname, curnozzle, IFNAMSIZ);
+ memmove(nozzle->name, curnozzle, IFNAMSIZ);
#endif
#ifdef KNET_LINUX
if ((nozzle->fd = open("/dev/net/tun", O_RDWR)) < 0) {
savederrno = errno;
goto out_error;
}
memset(&ifr, 0, sizeof(struct ifreq));
memmove(ifname, devname, IFNAMSIZ);
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
if (ioctl(nozzle->fd, TUNSETIFF, &ifr) < 0) {
savederrno = errno;
goto out_error;
}
if ((strlen(devname) > 0) && (strcmp(devname, ifname) != 0)) {
savederrno = EBUSY;
goto out_error;
}
- strncpy(devname, ifname, IFNAMSIZ);
- memmove(nozzle->name, ifname, IFNAMSIZ - 1);
+ memmove(devname, ifname, IFNAMSIZ);
+ memmove(nozzle->name, ifname, IFNAMSIZ);
#endif
nozzle->default_mtu = get_iface_mtu(nozzle);
if (nozzle->default_mtu < 0) {
savederrno = errno;
goto out_error;
}
if (get_iface_mac(nozzle, &temp_mac) < 0) {
savederrno = errno;
goto out_error;
}
strncpy(nozzle->default_mac, temp_mac, 18);
free(temp_mac);
if (updownpath) {
int len = strlen(updownpath);
strcpy(nozzle->updownpath, updownpath);
if (nozzle->updownpath[len-1] != '/') {
nozzle->updownpath[len] = '/';
}
nozzle->hasupdown = 1;
}
nozzle->next = lib_cfg.head;
lib_cfg.head = nozzle;
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return nozzle;
out_error:
destroy_iface(nozzle);
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return NULL;
}
int nozzle_close(nozzle_t nozzle)
{
int err = 0, savederrno = 0;
nozzle_t temp = lib_cfg.head;
nozzle_t prev = lib_cfg.head;
struct nozzle_ip *ip, *ip_next;
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
while ((temp) && (temp != nozzle)) {
prev = temp;
temp = temp->next;
}
if (nozzle == prev) {
lib_cfg.head = nozzle->next;
} else {
prev->next = nozzle->next;
}
ip = nozzle->ip;
while (ip) {
ip_next = ip->next;
free(ip);
ip = ip_next;
}
destroy_iface(nozzle);
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_run_updown(const nozzle_t nozzle, uint8_t action, char **exec_string)
{
int err = 0, savederrno = 0;
char command[PATH_MAX];
const char *action_str = NULL;
struct stat sb;
if (action > NOZZLE_POSTDOWN) {
errno = EINVAL;
return -1;
}
if (!exec_string) {
errno = EINVAL;
return -1;
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
if (!nozzle->hasupdown) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
switch(action) {
case NOZZLE_PREUP:
action_str = "pre-up.d";
break;
case NOZZLE_UP:
action_str = "up.d";
break;
case NOZZLE_DOWN:
action_str = "down.d";
break;
case NOZZLE_POSTDOWN:
action_str = "post-down.d";
break;
}
memset(command, 0, PATH_MAX);
snprintf(command, PATH_MAX, "%s/%s/%s", nozzle->updownpath, action_str, nozzle->name);
err = stat(command, &sb);
if (err) {
savederrno = errno;
goto out_clean;
}
/*
* clear errno from previous calls as there is no errno
* returned from execute_bin_sh_command
*/
savederrno = 0;
err = execute_bin_sh_command(command, exec_string);
if (err) {
err = -2;
}
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_set_up(nozzle_t nozzle)
{
int err = 0, savederrno = 0;
struct ifreq ifr;
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
if (nozzle->up) {
goto out_clean;
}
memset(&ifr, 0, sizeof(struct ifreq));
- strncpy(ifname, nozzle->name, IFNAMSIZ);
+ memmove(ifname, nozzle->name, IFNAMSIZ);
err = ioctl(lib_cfg.ioctlfd, SIOCGIFFLAGS, &ifr);
if (err) {
savederrno = errno;
goto out_clean;
}
ifr.ifr_flags |= IFF_UP | IFF_RUNNING;
err = ioctl(lib_cfg.ioctlfd, SIOCSIFFLAGS, &ifr);
if (err) {
savederrno = errno;
goto out_clean;
}
nozzle->up = 1;
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_set_down(nozzle_t nozzle)
{
int err = 0, savederrno = 0;
struct ifreq ifr;
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
if (!nozzle->up) {
goto out_clean;
}
memset(&ifr, 0, sizeof(struct ifreq));
- strncpy(ifname, nozzle->name, IFNAMSIZ);
+ memmove(ifname, nozzle->name, IFNAMSIZ);
err = ioctl(lib_cfg.ioctlfd, SIOCGIFFLAGS, &ifr);
if (err) {
savederrno = errno;
goto out_clean;
}
ifr.ifr_flags &= ~IFF_UP;
err = ioctl(lib_cfg.ioctlfd, SIOCSIFFLAGS, &ifr);
if (err) {
savederrno = errno;
goto out_clean;
}
nozzle->up = 0;
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_get_mtu(const nozzle_t nozzle)
{
int err = 0, savederrno = 0;
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
err = get_iface_mtu(nozzle);
savederrno = errno;
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_get_mac(const nozzle_t nozzle, char **ether_addr)
{
int err = 0, savederrno = 0;
if (!ether_addr) {
errno = EINVAL;
return -1;
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
err = get_iface_mac(nozzle, ether_addr);
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_set_mac(nozzle_t nozzle, const char *ether_addr)
{
int err = 0, savederrno = 0;
struct ifreq ifr;
if (!ether_addr) {
errno = EINVAL;
return -1;
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
memset(&ifr, 0, sizeof(struct ifreq));
- strncpy(ifname, nozzle->name, IFNAMSIZ);
+ memmove(ifname, nozzle->name, IFNAMSIZ);
#ifdef KNET_LINUX
err = ioctl(lib_cfg.ioctlfd, SIOCGIFHWADDR, &ifr);
if (err) {
savederrno = errno;
goto out_clean;
}
memmove(ifr.ifr_hwaddr.sa_data, ether_aton(ether_addr), ETH_ALEN);
err = ioctl(lib_cfg.ioctlfd, SIOCSIFHWADDR, &ifr);
savederrno = errno;
#endif
#ifdef KNET_BSD
err = ioctl(lib_cfg.ioctlfd, SIOCGIFADDR, &ifr);
if (err) {
savederrno = errno;
goto out_clean;
}
memmove(ifr.ifr_addr.sa_data, ether_aton(ether_addr), ETHER_ADDR_LEN);
ifr.ifr_addr.sa_len = ETHER_ADDR_LEN;
err = ioctl(lib_cfg.ioctlfd, SIOCSIFLLADDR, &ifr);
savederrno = errno;
#endif
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_reset_mac(nozzle_t nozzle)
{
return nozzle_set_mac(nozzle, nozzle->default_mac);
}
nozzle_t nozzle_get_handle_by_name(const char *devname)
{
int savederrno = 0;
nozzle_t nozzle;
if ((devname == NULL) || (strlen(devname) > IFNAMSIZ)) {
errno = EINVAL;
return NULL;
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return NULL;
}
nozzle = lib_cfg.head;
while (nozzle != NULL) {
if (!strcmp(devname, nozzle->name))
break;
nozzle = nozzle->next;
}
if (!nozzle) {
savederrno = ENOENT;
}
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return nozzle;
}
const char *nozzle_get_name_by_handle(const nozzle_t nozzle)
{
int savederrno = 0;
char *name = NULL;
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return NULL;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = ENOENT;
goto out_clean;
}
name = nozzle->name;
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return name;
}
int nozzle_get_fd(const nozzle_t nozzle)
{
int fd = -1, savederrno = 0;
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = ENOENT;
fd = -1;
goto out_clean;
}
fd = nozzle->fd;
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return fd;
}
int nozzle_set_mtu(nozzle_t nozzle, const int mtu)
{
int err = 0, savederrno = 0;
struct nozzle_ip *tmp_ip;
struct ifreq ifr;
if (!mtu) {
errno = EINVAL;
return -1;
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
err = nozzle->current_mtu = get_iface_mtu(nozzle);
if (err < 0) {
savederrno = errno;
goto out_clean;
}
memset(&ifr, 0, sizeof(struct ifreq));
- strncpy(ifname, nozzle->name, IFNAMSIZ);
+ memmove(ifname, nozzle->name, IFNAMSIZ);
ifr.ifr_mtu = mtu;
err = ioctl(lib_cfg.ioctlfd, SIOCSIFMTU, &ifr);
if (err) {
savederrno = errno;
goto out_clean;
}
if ((nozzle->current_mtu < 1280) && (mtu >= 1280)) {
tmp_ip = nozzle->ip;
while(tmp_ip) {
if (tmp_ip->domain == AF_INET6) {
err = _set_ip(nozzle, IP_ADD, tmp_ip->ipaddr, tmp_ip->prefix, 0);
if (err) {
savederrno = errno;
err = -1;
goto out_clean;
}
}
tmp_ip = tmp_ip->next;
}
}
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_reset_mtu(nozzle_t nozzle)
{
return nozzle_set_mtu(nozzle, nozzle->default_mtu);
}
int nozzle_add_ip(nozzle_t nozzle, const char *ipaddr, const char *prefix)
{
int err = 0, savederrno = 0;
int found = 0;
struct nozzle_ip *ip = NULL, *ip_prev = NULL, *ip_last = NULL;
int secondary = 0;
if ((!ipaddr) || (!prefix)) {
errno = EINVAL;
return -1;
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
found = find_ip(nozzle, ipaddr, prefix, &ip, &ip_prev);
if (found) {
goto out_clean;
}
ip = malloc(sizeof(struct nozzle_ip));
if (!ip) {
savederrno = errno;
err = -1 ;
goto out_clean;
}
memset(ip, 0, sizeof(struct nozzle_ip));
strncpy(ip->ipaddr, ipaddr, IPADDR_CHAR_MAX);
strncpy(ip->prefix, prefix, PREFIX_CHAR_MAX);
if (!strchr(ip->ipaddr, ':')) {
ip->domain = AF_INET;
} else {
ip->domain = AF_INET6;
}
/*
* if user asks for an IPv6 address, but MTU < 1280
* store the IP and bring it up later if and when MTU > 1280
*/
if ((ip->domain == AF_INET6) && (get_iface_mtu(nozzle) < 1280)) {
err = 0;
} else {
if (nozzle->ip) {
secondary = 1;
}
err = _set_ip(nozzle, IP_ADD, ipaddr, prefix, secondary);
savederrno = errno;
}
if (err) {
free(ip);
goto out_clean;
}
if (nozzle->ip) {
ip_last = nozzle->ip;
while (ip_last->next != NULL) {
ip_last = ip_last->next;
}
ip_last->next = ip;
} else {
nozzle->ip = ip;
}
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_del_ip(nozzle_t nozzle, const char *ipaddr, const char *prefix)
{
int err = 0, savederrno = 0;
int found = 0;
struct nozzle_ip *ip = NULL, *ip_prev = NULL;
if ((!ipaddr) || (!prefix)) {
errno = EINVAL;
return -1;
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
found = find_ip(nozzle, ipaddr, prefix, &ip, &ip_prev);
if (!found) {
goto out_clean;
}
/*
* if user asks for an IPv6 address, but MTU < 1280
* the IP might not be configured on the interface and we only need to
* remove it from our internal database
*/
if ((ip->domain == AF_INET6) && (get_iface_mtu(nozzle) < 1280)) {
err = 0;
} else {
err = _set_ip(nozzle, IP_DEL, ipaddr, prefix, 0);
savederrno = errno;
}
if (!err) {
if (ip == ip_prev) {
nozzle->ip = ip->next;
} else {
ip_prev->next = ip->next;
}
free(ip);
}
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
int nozzle_get_ips(const nozzle_t nozzle, struct nozzle_ip **nozzle_ip)
{
int err = 0, savederrno = 0;
if (!nozzle_ip) {
errno = EINVAL;
return -1;
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
err = -1;
savederrno = EINVAL;
goto out_clean;
}
*nozzle_ip = nozzle->ip;
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}

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