diff --git a/libnozzle/libnozzle.c b/libnozzle/libnozzle.c index 0b583d90..afed9f9b 100644 --- a/libnozzle/libnozzle.c +++ b/libnozzle/libnozzle.c @@ -1,1148 +1,1142 @@ /* * Copyright (C) 2010-2018 Red Hat, Inc. All rights reserved. * * Author: Fabio M. Di Nitto * * This software licensed under GPL-2.0+, LGPL-2.0+ */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef KNET_LINUX #include #include #endif #ifdef KNET_BSD #include #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 _close(nozzle_t nozzle) { #ifdef KNET_BSD struct ifreq ifr; #endif if (!nozzle) return; if (nozzle->fd) close(nozzle->fd); #ifdef KNET_BSD memset(&ifr, 0, sizeof(struct ifreq)); strncpy(ifname, nozzle->name, IFNAMSIZ); ioctl(lib_cfg.ioctlfd, SIOCIFDESTROY, &ifr); #endif free(nozzle); return; } static void _close_cfg(void) { if (lib_cfg.head == NULL) { close(lib_cfg.ioctlfd); lib_init = 0; } } static int _set_down(nozzle_t nozzle) { int err = 0, savederrno = 0; struct ifreq ifr; if (!nozzle->up) { goto out_clean; } memset(&ifr, 0, sizeof(struct ifreq)); strncpy(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: errno = savederrno; return err; } static int _set_ip(nozzle_t nozzle, const char *command, const char *ipaddr, const char *prefix, char **error_string, int secondary) { char *broadcast = NULL; char cmdline[4096]; #ifdef KNET_BSD char proto[6]; int v4 = 1; snprintf(proto, sizeof(proto), "inet"); #endif if (!strchr(ipaddr, ':')) { broadcast = generate_v4_broadcast(ipaddr, prefix); if (!broadcast) { errno = EINVAL; return -1; } } #ifdef KNET_BSD else { v4 = 0; snprintf(proto, sizeof(proto), "inet6"); } #endif memset(cmdline, 0, sizeof(cmdline)); #ifdef KNET_LINUX if (broadcast) { snprintf(cmdline, sizeof(cmdline)-1, "ip addr %s %s/%s dev %s broadcast %s", command, ipaddr, prefix, nozzle->name, broadcast); } else { snprintf(cmdline, sizeof(cmdline)-1, "ip addr %s %s/%s dev %s", command, ipaddr, prefix, nozzle->name); } #endif #ifdef KNET_BSD if (!strcmp(command, "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) && (v4)) { 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); } #endif if (broadcast) { free(broadcast); } return execute_bin_sh_command(cmdline, error_string); } /* * internal helpers below should be completed * * keep all ioctl work within this file */ 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 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); 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); #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; } /* * 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; } 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.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)) { for (i = 0; i < 256; i++) { 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) { errno = EBUSY; goto out_error; } strncpy(devname, curnozzle, IFNAMSIZ); strncpy(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)); strncpy(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)) { errno = EBUSY; goto out_error; } strncpy(devname, ifname, IFNAMSIZ); strncpy(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: _close(nozzle); _close_cfg(); 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; char *error_string = NULL; 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; } _set_down(nozzle); ip = nozzle->ip; while (ip) { ip_next = ip->next; _set_ip(nozzle, "del", ip->ipaddr, ip->prefix, &error_string, 0); if (error_string) { free(error_string); error_string = NULL; } free(ip); ip = ip_next; } _close(nozzle); _close_cfg(); out_clean: pthread_mutex_unlock(&config_mutex); errno = savederrno; return err; } int nozzle_set_mtu(nozzle_t nozzle, const int mtu, char **error_string) { int err = 0, savederrno = 0; struct nozzle_ip *tmp_ip; struct ifreq ifr; if ((!mtu) || (!error_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; } 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); 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, "add", tmp_ip->ipaddr, tmp_ip->prefix, error_string, 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, char **error_string) { return nozzle_set_mtu(nozzle, nozzle->default_mtu, error_string); } -int nozzle_set_up(nozzle_t nozzle, char **error_preup, char **error_up) +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->hasupdown) && ((!error_preup) || (!error_up))) { - savederrno = EINVAL; - err = -1; - goto out_clean; - } - if (nozzle->up) { goto out_clean; } memset(&ifr, 0, sizeof(struct ifreq)); strncpy(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; 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 = _set_down(nozzle); savederrno = errno; out_clean: pthread_mutex_unlock(&config_mutex); errno = savederrno; return err; } int nozzle_add_ip(nozzle_t nozzle, const char *ipaddr, const char *prefix, char **error_string) { 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) || (!error_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; } 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, "add", ipaddr, prefix, error_string, 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, char **error_string) { int err = 0, savederrno = 0; int found = 0; struct nozzle_ip *ip = NULL, *ip_prev = NULL; if ((!ipaddr) || (!prefix) || (!error_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; } found = find_ip(nozzle, ipaddr, prefix, &ip, &ip_prev); if (!found) { goto out_clean; } err = _set_ip(nozzle, "del", ipaddr, prefix, error_string, 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, char **ipaddr_list, int *entries) { int err = 0, savederrno = 0; int found = 0; char *ip_list = NULL; int size = 0, offset = 0, len; struct nozzle_ip *ip = NULL; if ((!ipaddr_list) || (!entries)) { errno = EINVAL; return -1; } savederrno = pthread_mutex_lock(&config_mutex); if (savederrno) { errno = savederrno; return -1; } if (!is_valid_nozzle(nozzle)) { savederrno = EINVAL; goto out_clean; } ip = nozzle->ip; while (ip) { found++; ip = ip->next; } if (!found) { *ipaddr_list = NULL; *entries = 0; goto out_clean; } size = found * (IPADDR_CHAR_MAX + PREFIX_CHAR_MAX + 2); ip_list = malloc(size); if (!ip_list) { savederrno = errno; err = -1; goto out_clean; } memset(ip_list, 0, size); ip = nozzle->ip; while (ip) { len = strlen(ip->ipaddr); memmove(ip_list + offset, ip->ipaddr, len); offset = offset + len + 1; len = strlen(ip->prefix); memmove(ip_list + offset, ip->prefix, len); offset = offset + len + 1; ip = ip->next; } *ipaddr_list = ip_list; *entries = found; 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; } err = execute_bin_sh_command(command, exec_string); savederrno = errno; out_clean: pthread_mutex_unlock(&config_mutex); errno = savederrno; return err; } /* * functions below should be completed */ 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); savederrno = errno; 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); #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; } diff --git a/libnozzle/libnozzle.h b/libnozzle/libnozzle.h index 562d3767..e4fc51a1 100644 --- a/libnozzle/libnozzle.h +++ b/libnozzle/libnozzle.h @@ -1,335 +1,324 @@ /* * Copyright (C) 2010-2018 Red Hat, Inc. All rights reserved. * * Author: Fabio M. Di Nitto * * This software licensed under GPL-2.0+, LGPL-2.0+ */ #ifndef __LIBNOZZLE_H__ #define __LIBNOZZLE_H__ #include #include /** * * @file libnozzle.h * @brief tap interfaces management API include file * @copyright Copyright (C) 2010-2017 Red Hat, Inc. All rights reserved. * * nozzle is a commodity library to manage tap (ethernet) interfaces */ typedef struct nozzle_iface *nozzle_t; /** * nozzle_open * @brief create a new tap device on the system. * * devname - pointer to device name of at least size IFNAMSIZ. * if the dev strlen is 0, then the system will assign a name automatically. * if a string is specified, the system will try to create a device with * the specified name. * NOTE: on FreeBSD the tap device names can only be tapX where X is a * number from 0 to 255. On Linux such limitation does not apply. * The name must be unique to the system. If an interface with the same * name is already configured on the system, an error will be returned. * * devname_size - length of the buffer provided in dev (has to be at least IFNAMSIZ). * * updownpath - nozzle supports the typical filesystem structure to execute * actions for: down.d post-down.d pre-up.d up.d * in the form of: * updownpath// * updownpath specifies where to find those directories on the * filesystem and it must be an absolute path. * * @return * nozzle_open returns * a pointer to a nozzle struct on success * NULL on error and errno is set. */ nozzle_t nozzle_open(char *devname, size_t devname_size, const char *updownpath); /** * nozzle_close * @brief deconfigure and destroy a nozzle device * * nozzle - pointer to the nozzle struct to destroy * * @return * 0 on success * -1 on error and errno is set. */ int nozzle_close(nozzle_t nozzle); #define NOZZLE_PREUP 0 #define NOZZLE_UP 1 #define NOZZLE_DOWN 2 #define NOZZLE_POSTDOWN 3 /** * nozzle_run_updown * @brief execute updown commands associated with a nozzle device * * nozzle - pointer to the nozzle struct * * action - pre-up.d / up.d / down.d / post-down.d (see defines above) * * exec_string - pointers to string to record executing action stdout/stderr. * The string is malloc'ed, the caller needs to free the buffer. * If the script generates no output this string might be NULL. * * @return * 0 on success * -1 on error and errno is set. */ int nozzle_run_updown(const nozzle_t nozzle, uint8_t action, char **exec_string); /** * nozzle_set_up - * @brief equivalent of ifconfig up, executes pre-up.d up.d if configured + * @brief equivalent of ifconfig up * * nozzle - pointer to the nozzle struct * - * error_preup - pointer to string pointer to record errors from executing pre-up.d - * when configured. The string is malloc'ed, the caller needs to free that - * buffer. - * - * error_up - pointer to string pointer to record errors from executing up.d - * when configured. The string is malloc'ed, the caller needs to free that - * buffer. - * * @return * 0 on success * -1 on error and errno is set. - * error_preup / error_up are set to NULL if execution of external scripts - * is sucessful - * error_preup / error_up will contain strings recording the execution error. */ -int nozzle_set_up(nozzle_t nozzle, char **error_preup, char **error_up); +int nozzle_set_up(nozzle_t nozzle); /** * nozzle_set_down * @brief equivalent of ifconfig down * * nozzle - pointer to the nozzle struct * * @return * 0 on success * -1 on error and errno is set. */ int nozzle_set_down(nozzle_t nozzle); /** * nozzle_add_ip * @brief equivalent of ip addr or ifconfig * * nozzle - pointer to the nozzle struct * * ipaddr - string containing either an IPv4 or an IPv6 address. * Please note that Linux will automatically remove any IPv6 addresses from an interface * with MTU < 1280. libnozzle will cache those IPs and re-instate them when MTU is > 1280. * MTU must be set via nozzle_set_mtu for IPv6 to be re-instated. * * prefix - 24, 64 or any valid network prefix for the requested address. * * error_string - pointers to string to record errors from ipaddr2 (Linux) or ifconfig (BSD). * The string is malloc'ed, the caller needs to free this buffer. * * @return * 0 on success * -1 on error and errno is set. * error_string is set to NULL on success * error_string will contain a string recording the execution error. */ int nozzle_add_ip(nozzle_t nozzle, const char *ipaddr, const char *prefix, char **error_string); /** * nozzle_del_ip * @brief equivalent of ip addr del or ifconfig del * * nozzle - pointer to the nozzle struct * * ipaddr - string containing either an IPv4 or an IPv6 address. * * prefix - 24, 64 or any valid network prefix for the requested address. * * error_string - pointers to string to record errors from ipaddr2 (Linux) or ifconfig (BSD). * The string is malloc'ed, the caller needs to free this buffer. * * @return * 0 on success * -1 on error and errno is set. * error_string is set to NULL on success * error_string will contain a string recording the execution error. */ int nozzle_del_ip(nozzle_t nozzle, const char *ipaddr, const char *prefix, char **error_string); /** * nozzle_get_ips * @brief retrive the list of all configured ips for a given interface * * TODO: change to use a ipaddr_list struct! * * nozzle - pointer to the nozzle struct * * ipaddr_list - list of strings containing either an IPv4 or an IPv6 address and their prefixes. * * entries - entries recorded. * * @return * 0 on success * -1 on error and errno is set. * ipaddr_list is a malloc'ed buffer that the user needs to parse and free after use. ipaddr_list can * be NULL if entries is 0. * */ int nozzle_get_ips(const nozzle_t nozzle, char **ipaddr_list, int *entries); /** * nozzle_get_mtu * @brief retrive mtu on a given nozzle interface * * nozzle - pointer to the nozzle struct * * @return * MTU on success * -1 on error and errno is set. */ int nozzle_get_mtu(const nozzle_t nozzle); /** * nozzle_set_mtu * @brief set mtu on a given nozzle interface * * nozzle - pointer to the nozzle struct * * mtu - new MTU value * * error_string - pointer to string to record errors from ipaddr2 (Linux) or ifconfig (BSD) * when re-instanting IPv6 address if MTU is becoming again > 1280. * The string is malloc'ed, the caller needs to free this buffer. * * @return * 0 on success * -1 on error and errno is set. * error_string is set to NULL on success * error_string will contain a string recording the execution error. */ int nozzle_set_mtu(nozzle_t nozzle, const int mtu, char **error_string); /** * nozzle_reset_mtu * @brief reset mtu on a given nozzle interface to the system default * * nozzle - pointer to the nozzle struct * * error_string - pointer to string to record errors from ipaddr2 (Linux) or ifconfig (BSD) * when re-instanting IPv6 address if MTU is becoming again > 1280. * The string is malloc'ed, the caller needs to free this buffer. * * @return * 0 on success * -1 on error and errno is set. * error_string is set to NULL on success * error_string will contain a string recording the execution error. */ int nozzle_reset_mtu(nozzle_t nozzle, char **error_string); /** * nozzle_get_mac * @brief retrive mac address on a given nozzle interface * * nozzle - pointer to the nozzle struct * * ether_addr - pointers to string containing the current mac address. * The string is malloc'ed, the caller needs to free this buffer. * @return * 0 on success. * -1 on error and errno is set. */ int nozzle_get_mac(const nozzle_t nozzle, char **ether_addr); /** * nozzle_set_mac * @brief set mac address on a given nozzle interface * * nozzle - pointer to the nozzle struct * * ether_addr - pointers to string containing the new mac address. * * @return * 0 on success. * -1 on error and errno is set. */ int nozzle_set_mac(nozzle_t nozzle, const char *ether_addr); /** * nozzle_reset_mac * @brief reset mac address on a given nozzle interface to system default * * nozzle - pointer to the nozzle struct * * @return * 0 on success. * -1 on error and errno is set. */ int nozzle_reset_mac(nozzle_t nozzle); /** * nozzle_get_handle_by_name * @brief find a nozzle handle by device name * * devname - string containing the name of the interface * * @return * handle on success. * NULL on error and errno is set. */ nozzle_t nozzle_get_handle_by_name(const char *devname); /** * nozzle_get_name_by_handle * @brief retrive nozzle interface name by handle * * nozzle - pointer to the nozzle struct * * @return * pointer to the interface name * NULL on error and errno is set. */ const char *nozzle_get_name_by_handle(const nozzle_t nozzle); /** * nozzle_get_fd * @brief * * nozzle - pointer to the nozzle struct * * @return * fd associated to a given nozzle on success. * -1 on error and errno is set. */ int nozzle_get_fd(const nozzle_t nozzle); #endif diff --git a/libnozzle/tests/nozzle_test.c b/libnozzle/tests/nozzle_test.c index c79a1090..2fa3566d 100644 --- a/libnozzle/tests/nozzle_test.c +++ b/libnozzle/tests/nozzle_test.c @@ -1,1383 +1,1353 @@ /* * Copyright (C) 2010-2017 Red Hat, Inc. All rights reserved. * * Author: Fabio M. Di Nitto * * This software licensed under GPL-2.0+, LGPL-2.0+ */ #include "config.h" #include #include #include #include #include #include #include #include #include #ifdef KNET_LINUX #include #include #endif #ifdef KNET_BSD #include #endif #include "libnozzle.h" #include "internals.h" char testipv4_1[1024]; char testipv4_2[1024]; char testipv6_1[1024]; char testipv6_2[1024]; /* * use this one to randomize knet interface name * for named creation test */ uint8_t randombyte = 0; static int is_if_in_system(char *name) { struct ifaddrs *ifap = NULL; struct ifaddrs *ifa; int found = 0; if (getifaddrs(&ifap) < 0) { printf("Unable to get interface list.\n"); return -1; } ifa = ifap; while (ifa) { if (!strncmp(name, ifa->ifa_name, IFNAMSIZ)) { found = 1; break; } ifa=ifa->ifa_next; } freeifaddrs(ifap); return found; } static int test_iface(char *name, size_t size, const char *updownpath) { nozzle_t nozzle; nozzle=nozzle_open(name, size, updownpath); if (!nozzle) { printf("Unable to open knet.\n"); return -1; } printf("Created interface: %s\n", name); if (is_if_in_system(name) > 0) { printf("Found interface %s on the system\n", name); } else { printf("Unable to find interface %s on the system\n", name); } if (!nozzle_get_handle_by_name(name)) { printf("Unable to find interface %s in nozzle db\n", name); } else { printf("Found interface %s in nozzle db\n", name); } nozzle_close(nozzle); if (is_if_in_system(name) == 0) printf("Successfully removed interface %s from the system\n", name); return 0; } static int check_nozzle_open_close(void) { char device_name[2*IFNAMSIZ]; char fakepath[PATH_MAX]; size_t size = IFNAMSIZ; memset(device_name, 0, sizeof(device_name)); printf("Creating random nozzle interface:\n"); if (test_iface(device_name, size, NULL) < 0) { printf("Unable to create random interface\n"); return -1; } #ifdef KNET_LINUX printf("Creating kronostest%u nozzle interface:\n", randombyte); snprintf(device_name, IFNAMSIZ, "kronostest%u", randombyte); if (test_iface(device_name, size, NULL) < 0) { printf("Unable to create kronostest%u interface\n", randombyte); return -1; } #endif #ifdef KNET_BSD printf("Creating tap%u nozzle interface:\n", randombyte); snprintf(device_name, IFNAMSIZ, "tap%u", randombyte); if (test_iface(device_name, size, NULL) < 0) { printf("Unable to create tap%u interface\n", randombyte); return -1; } printf("Creating kronostest%u nozzle interface:\n", randombyte); snprintf(device_name, IFNAMSIZ, "kronostest%u", randombyte); if (test_iface(device_name, size, NULL) == 0) { printf("BSD should not accept kronostest%u interface\n", randombyte); return -1; } #endif printf("Testing ERROR conditions\n"); printf("Testing dev == NULL\n"); errno=0; if ((test_iface(NULL, size, NULL) >= 0) || (errno != EINVAL)) { printf("Something is wrong in nozzle_open sanity checks\n"); return -1; } printf("Testing size < IFNAMSIZ\n"); errno=0; if ((test_iface(device_name, 1, NULL) >= 0) || (errno != EINVAL)) { printf("Something is wrong in nozzle_open sanity checks\n"); return -1; } printf("Testing device_name size > IFNAMSIZ\n"); errno=0; strcpy(device_name, "abcdefghilmnopqrstuvwz"); if ((test_iface(device_name, IFNAMSIZ, NULL) >= 0) || (errno != E2BIG)) { printf("Something is wrong in nozzle_open sanity checks\n"); return -1; } printf("Testing updown path != abs\n"); errno=0; memset(device_name, 0, IFNAMSIZ); if ((test_iface(device_name, IFNAMSIZ, "foo") >= 0) || (errno != EINVAL)) { printf("Something is wrong in nozzle_open sanity checks\n"); return -1; } memset(fakepath, 0, PATH_MAX); memset(fakepath, '/', PATH_MAX - 2); printf("Testing updown path > PATH_MAX\n"); errno=0; memset(device_name, 0, IFNAMSIZ); if ((test_iface(device_name, IFNAMSIZ, fakepath) >= 0) || (errno != E2BIG)) { printf("Something is wrong in nozzle_open sanity checks\n"); return -1; } return 0; } static int check_knet_multi_eth(void) { char device_name1[IFNAMSIZ]; char device_name2[IFNAMSIZ]; size_t size = IFNAMSIZ; int err=0; nozzle_t nozzle1 = NULL; nozzle_t nozzle2 = NULL; printf("Testing multiple knet interface instances\n"); memset(device_name1, 0, size); memset(device_name2, 0, size); nozzle1 = nozzle_open(device_name1, size, NULL); if (!nozzle1) { printf("Unable to init %s\n", device_name1); err = -1; goto out_clean; } if (is_if_in_system(device_name1) > 0) { printf("Found interface %s on the system\n", device_name1); } else { printf("Unable to find interface %s on the system\n", device_name1); } nozzle2 = nozzle_open(device_name2, size, NULL); if (!nozzle2) { printf("Unable to init %s\n", device_name2); err = -1; goto out_clean; } if (is_if_in_system(device_name2) > 0) { printf("Found interface %s on the system\n", device_name2); } else { printf("Unable to find interface %s on the system\n", device_name2); } if (nozzle1) { nozzle_close(nozzle1); } if (nozzle2) { nozzle_close(nozzle2); } printf("Testing error conditions\n"); printf("Open same device twice\n"); memset(device_name1, 0, size); nozzle1 = nozzle_open(device_name1, size, NULL); if (!nozzle1) { printf("Unable to init %s\n", device_name1); err = -1; goto out_clean; } if (is_if_in_system(device_name1) > 0) { printf("Found interface %s on the system\n", device_name1); } else { printf("Unable to find interface %s on the system\n", device_name1); } nozzle2 = nozzle_open(device_name1, size, NULL); if (nozzle2) { printf("We were able to init 2 interfaces with the same name!\n"); err = -1; goto out_clean; } out_clean: if (nozzle1) { nozzle_close(nozzle1); } if (nozzle2) { nozzle_close(nozzle2); } return err; } static int check_knet_mtu(void) { char device_name[IFNAMSIZ]; size_t size = IFNAMSIZ; int err=0; nozzle_t nozzle; char *error_string = NULL; int current_mtu = 0; int expected_mtu = 1500; printf("Testing get/set MTU\n"); memset(device_name, 0, size); nozzle = nozzle_open(device_name, size, NULL); if (!nozzle) { printf("Unable to init %s\n", device_name); return -1; } printf("Comparing default MTU\n"); current_mtu = nozzle_get_mtu(nozzle); if (current_mtu < 0) { printf("Unable to get MTU\n"); err = -1; goto out_clean; } if (current_mtu != expected_mtu) { printf("current mtu [%d] does not match expected default [%d]\n", current_mtu, expected_mtu); err = -1; goto out_clean; } printf("Setting MTU to 9000\n"); expected_mtu = 9000; if (nozzle_set_mtu(nozzle, expected_mtu, &error_string) < 0) { printf("Unable to set MTU to %d\n", expected_mtu); if (error_string) { printf("error: %s\n", error_string); free(error_string); } err = -1; goto out_clean; } current_mtu = nozzle_get_mtu(nozzle); if (current_mtu < 0) { printf("Unable to get MTU\n"); err = -1; goto out_clean; } if (current_mtu != expected_mtu) { printf("current mtu [%d] does not match expected value [%d]\n", current_mtu, expected_mtu); err = -1; goto out_clean; } printf("Testing ERROR conditions\n"); printf("Passing empty struct to get_mtu\n"); if (nozzle_get_mtu(NULL) > 0) { printf("Something is wrong in nozzle_get_mtu sanity checks\n"); err = -1; goto out_clean; } printf("Passing empty struct to set_mtu\n"); if (nozzle_set_mtu(NULL, 1500, &error_string) == 0) { printf("Something is wrong in nozzle_set_mtu sanity checks\n"); if (error_string) { printf("error: %s\n", error_string); free(error_string); } err = -1; goto out_clean; } out_clean: if (nozzle) { nozzle_close(nozzle); } return err; } static int check_knet_mtu_ipv6(void) { char device_name[IFNAMSIZ]; size_t size = IFNAMSIZ; char verifycmd[1024]; int err=0; nozzle_t nozzle; char *error_string = NULL; printf("Testing get/set MTU with IPv6 address\n"); memset(device_name, 0, size); nozzle = nozzle_open(device_name, size, NULL); if (!nozzle) { printf("Unable to init %s\n", device_name); return -1; } printf("Adding ip: %s/64\n", testipv6_1); err = nozzle_add_ip(nozzle, testipv6_1, "64", &error_string); if (error_string) { printf("add ipv6 output: %s\n", error_string); free(error_string); error_string = NULL; } if (err) { printf("Unable to assign IP address\n"); err=-1; sleep(30); goto out_clean; } memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1); #endif #ifdef KNET_BSD "ifconfig %s | grep -q %s", nozzle->name, testipv6_1); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (err) { printf("Unable to verify IP address\n"); err=-1; goto out_clean; } printf("Setting MTU to 1200\n"); if (nozzle_set_mtu(nozzle, 1200, &error_string) < 0) { printf("Unable to set MTU to 1200\n"); if (error_string) { printf("error: %s\n", error_string); free(error_string); } err = -1; goto out_clean; } err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } #ifdef KNET_LINUX if (!err) { #endif #ifdef KNET_BSD if (err) { #endif printf("Unable to verify IP address\n"); err=-1; goto out_clean; } printf("Adding ip: %s/64\n", testipv6_2); err = nozzle_add_ip(nozzle, testipv6_2, "64", &error_string); if (error_string) { printf("add ipv6 output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to assign IP address\n"); err=-1; goto out_clean; } memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_2); #endif #ifdef KNET_BSD "ifconfig %s | grep -q %s", nozzle->name, testipv6_2); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (!err) { printf("Unable to verify IP address\n"); err=-1; goto out_clean; } printf("Restoring MTU to default\n"); if (nozzle_reset_mtu(nozzle, &error_string) < 0) { printf("Unable to reset mtu\n"); if (error_string) { printf("error: %s\n", error_string); free(error_string); } err = -1; goto out_clean; } memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1); #endif #ifdef KNET_BSD "ifconfig %s | grep -q %s", nozzle->name, testipv6_1); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (err) { printf("Unable to verify IP address\n"); err=-1; goto out_clean; } memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_2); #endif #ifdef KNET_BSD "ifconfig %s | grep -q %s", nozzle->name, testipv6_2); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (err) { printf("Unable to verify IP address\n"); err=-1; goto out_clean; } out_clean: if (nozzle) { nozzle_close(nozzle); } return err; } static int check_knet_mac(void) { char device_name[IFNAMSIZ]; size_t size = IFNAMSIZ; int err=0; nozzle_t nozzle; char *current_mac = NULL, *temp_mac = NULL, *err_mac = NULL; struct ether_addr *cur_mac, *tmp_mac; printf("Testing get/set MAC\n"); memset(device_name, 0, size); nozzle = nozzle_open(device_name, size, NULL); if (!nozzle) { printf("Unable to init %s\n", device_name); return -1; } printf("Get current MAC\n"); if (nozzle_get_mac(nozzle, ¤t_mac) < 0) { printf("Unable to get current MAC address.\n"); err = -1; goto out_clean; } printf("Current MAC: %s\n", current_mac); printf("Setting MAC: 00:01:01:01:01:01\n"); if (nozzle_set_mac(nozzle, "00:01:01:01:01:01") < 0) { printf("Unable to set current MAC address.\n"); err = -1; goto out_clean; } if (nozzle_get_mac(nozzle, &temp_mac) < 0) { printf("Unable to get current MAC address.\n"); err = -1; goto out_clean; } printf("Current MAC: %s\n", temp_mac); cur_mac = ether_aton(current_mac); tmp_mac = ether_aton(temp_mac); printf("Comparing MAC addresses\n"); if (memcmp(cur_mac, tmp_mac, sizeof(struct ether_addr))) { printf("Mac addresses are not the same?!\n"); err = -1; sleep(20); goto out_clean; } printf("Testing ERROR conditions\n"); printf("Pass NULL to get_mac (pass1)\n"); errno = 0; if ((nozzle_get_mac(NULL, &err_mac) >= 0) || (errno != EINVAL)) { printf("Something is wrong in nozzle_get_mac sanity checks\n"); err = -1; goto out_clean; } printf("Pass NULL to get_mac (pass2)\n"); errno = 0; if ((nozzle_get_mac(nozzle, NULL) >= 0) || (errno != EINVAL)) { printf("Something is wrong in nozzle_get_mac sanity checks\n"); err = -1; goto out_clean; } printf("Pass NULL to set_mac (pass1)\n"); errno = 0; if ((nozzle_set_mac(nozzle, NULL) >= 0) || (errno != EINVAL)) { printf("Something is wrong in nozzle_set_mac sanity checks\n"); err = -1; goto out_clean; } printf("Pass NULL to set_mac (pass2)\n"); errno = 0; if ((nozzle_set_mac(NULL, err_mac) >= 0) || (errno != EINVAL)) { printf("Something is wrong in nozzle_set_mac sanity checks\n"); err = -1; goto out_clean; } out_clean: if (err_mac) { printf("Something managed to set err_mac!\n"); err = -1; free(err_mac); } if (current_mac) free(current_mac); if (temp_mac) free(temp_mac); if (nozzle) { nozzle_close(nozzle); } return err; } static int check_nozzle_execute_bin_sh_command(void) { int err = 0; char command[4096]; char *error_string = NULL; memset(command, 0, sizeof(command)); printf("Testing execute_bin_sh_command\n"); printf("command true\n"); err = execute_bin_sh_command("true", &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (err) { printf("Unable to execute true ?!?!\n"); goto out_clean; } printf("Testing ERROR conditions\n"); printf("command false\n"); err = execute_bin_sh_command("false", &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (!err) { printf("Can we really execute false successfully?!?!\n"); err = -1; goto out_clean; } printf("command that outputs to stdout (enforcing redirect)\n"); err = execute_bin_sh_command("grep -h 2>&1", &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (!err) { printf("Can we really execute grep -h successfully?!?\n"); err = -1; goto out_clean; } printf("command that outputs to stderr\n"); err = execute_bin_sh_command("grep -h", &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (!err) { printf("Can we really execute grep -h successfully?!?\n"); err = -1; goto out_clean; } printf("empty command\n"); err = execute_bin_sh_command(NULL, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (!err) { printf("Can we really execute (nil) successfully?!?!\n"); err = -1; goto out_clean; } printf("empty error\n"); err = execute_bin_sh_command("true", NULL); if (!err) { printf("Check EINVAL filter for no error_string!\n"); err = -1; goto out_clean; } err = 0; out_clean: return err; } static int check_knet_up_down(void) { char verifycmd[1024]; char device_name[IFNAMSIZ]; size_t size = IFNAMSIZ; int err=0; nozzle_t nozzle; char *error_string = NULL; - char *error_preup = NULL, *error_up = NULL; - char *error_down = NULL, *error_postdown = NULL; printf("Testing interface up/down\n"); memset(device_name, 0, size); nozzle = nozzle_open(device_name, size, NULL); if (!nozzle) { printf("Unable to init %s\n", device_name); return -1; } printf("Put the interface up\n"); - err = nozzle_set_up(nozzle, &error_preup, &error_up); - if (error_preup) { - printf("preup output: %s\n", error_preup); - free(error_preup); - error_preup = NULL; - } - if (error_up) { - printf("up output: %s\n", error_up); - free(error_up); - error_up = NULL; - } + err = nozzle_set_up(nozzle); if (err < 0) { printf("Unable to set interface up\n"); err = -1; goto out_clean; } memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q UP", nozzle->name); #endif #ifdef KNET_BSD "ifconfig %s | grep -q UP", nozzle->name); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to verify inteface UP\n"); err = -1; goto out_clean; } printf("Put the interface down\n"); - err = nozzle_run_updown(nozzle, NOZZLE_DOWN, &error_down); - if (err) { - printf("nozzle_run_updown NOZZLE_DOWN error: %s\n", strerror(errno)); - } - if (error_down) { - printf("down output: %s\n", error_down); - free(error_down); - error_down = NULL; - } err = nozzle_set_down(nozzle); if (err < 0) { printf("Unable to put the interface down\n"); err = -1; goto out_clean; } - err = nozzle_run_updown(nozzle, NOZZLE_POSTDOWN, &error_postdown); - if (err) { - printf("nozzle_run_updown NOZZLE_POSTDOWN error: %s\n", strerror(errno)); - } - if (error_postdown) { - printf("postdown output: %s\n", error_down); - free(error_down); - error_down = NULL; - } memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q UP", nozzle->name); #endif #ifdef KNET_BSD "ifconfig %s | grep -q UP", nozzle->name); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (!err) { printf("Unable to verify inteface DOWN\n"); err = -1; goto out_clean; } nozzle_close(nozzle); printf("Testing interface pre-up/up/down/post-down (exec errors)\n"); memset(device_name, 0, size); nozzle = nozzle_open(device_name, size, ABSBUILDDIR "/nozzle_updown_bad"); if (!nozzle) { printf("Unable to init %s\n", device_name); return -1; } printf("Put the interface up\n"); - err = nozzle_set_up(nozzle, &error_preup, &error_up); - if (error_preup) { - printf("preup output: %s\n", error_preup); - free(error_preup); - error_preup = NULL; + err = nozzle_run_updown(nozzle, NOZZLE_PREUP, &error_string); + if (err) { + printf("nozzle_run_updown NOZZLE_PREUP error: %s\n", strerror(errno)); } - if (error_up) { - printf("up output: %s\n", error_up); - free(error_up); - error_up = NULL; + if (error_string) { + printf("preup output: %s\n", error_string); + free(error_string); + error_string = NULL; } + err = nozzle_set_up(nozzle); if (err < 0) { - printf("Unable to set interface up\n"); + printf("Unable to put the interface up\n"); err = -1; goto out_clean; } + err = nozzle_run_updown(nozzle, NOZZLE_UP, &error_string); + if (err) { + printf("nozzle_run_updown NOZZLE_UP error: %s\n", strerror(errno)); + } + if (error_string) { + printf("up output: %s\n", error_string); + free(error_string); + error_string = NULL; + } printf("Put the interface down\n"); - err = nozzle_run_updown(nozzle, NOZZLE_DOWN, &error_down); + err = nozzle_run_updown(nozzle, NOZZLE_DOWN, &error_string); if (err) { printf("nozzle_run_updown NOZZLE_DOWN error: %s\n", strerror(errno)); } - if (error_down) { - printf("down output: %s\n", error_down); - free(error_down); - error_down = NULL; + if (error_string) { + printf("down output: %s\n", error_string); + free(error_string); + error_string = NULL; } err = nozzle_set_down(nozzle); if (err < 0) { printf("Unable to put the interface down\n"); err = -1; goto out_clean; } - err = nozzle_run_updown(nozzle, NOZZLE_POSTDOWN, &error_postdown); + err = nozzle_run_updown(nozzle, NOZZLE_POSTDOWN, &error_string); if (err) { printf("nozzle_run_updown NOZZLE_POSTDOWN error: %s\n", strerror(errno)); } - if (error_postdown) { - printf("postdown output: %s\n", error_down); - free(error_down); - error_down = NULL; + if (error_string) { + printf("postdown output: %s\n", error_string); + free(error_string); + error_string = NULL; } nozzle_close(nozzle); printf("Testing interface pre-up/up/down/post-down\n"); memset(device_name, 0, size); nozzle = nozzle_open(device_name, size, ABSBUILDDIR "/nozzle_updown_good"); if (!nozzle) { printf("Unable to init %s\n", device_name); return -1; } printf("Put the interface up\n"); - err = nozzle_set_up(nozzle, &error_preup, &error_up); - if (error_preup) { - printf("preup output: %s\n", error_preup); - free(error_preup); - error_preup = NULL; + err = nozzle_run_updown(nozzle, NOZZLE_PREUP, &error_string); + if (err) { + printf("nozzle_run_updown NOZZLE_PREUP error: %s\n", strerror(errno)); } - if (error_up) { - printf("up output: %s\n", error_up); - free(error_up); - error_up = NULL; + if (error_string) { + printf("preup output: %s\n", error_string); + free(error_string); + error_string = NULL; } + err = nozzle_set_up(nozzle); if (err < 0) { - printf("Unable to set interface up\n"); + printf("Unable to put the interface up\n"); err = -1; goto out_clean; } + err = nozzle_run_updown(nozzle, NOZZLE_UP, &error_string); + if (err) { + printf("nozzle_run_updown NOZZLE_UP error: %s\n", strerror(errno)); + } + if (error_string) { + printf("up output: %s\n", error_string); + free(error_string); + error_string = NULL; + } printf("Put the interface down\n"); - err = nozzle_run_updown(nozzle, NOZZLE_DOWN, &error_down); + err = nozzle_run_updown(nozzle, NOZZLE_DOWN, &error_string); if (err) { printf("nozzle_run_updown NOZZLE_DOWN error: %s\n", strerror(errno)); } - if (error_down) { - printf("down output: %s\n", error_down); - free(error_down); - error_down = NULL; + if (error_string) { + printf("down output: %s\n", error_string); + free(error_string); + error_string = NULL; } err = nozzle_set_down(nozzle); if (err < 0) { printf("Unable to put the interface down\n"); err = -1; goto out_clean; } - err = nozzle_run_updown(nozzle, NOZZLE_POSTDOWN, &error_postdown); + err = nozzle_run_updown(nozzle, NOZZLE_POSTDOWN, &error_string); if (err) { printf("nozzle_run_updown NOZZLE_POSTDOWN error: %s\n", strerror(errno)); } - if (error_postdown) { - printf("postdown output: %s\n", error_down); - free(error_down); - error_down = NULL; + if (error_string) { + printf("postdown output: %s\n", error_string); + free(error_string); + error_string = NULL; } nozzle_close(nozzle); printf("Test ERROR conditions\n"); printf("Pass NULL to nozzle set_up\n"); err = 0; errno = 0; - if ((nozzle_set_up(NULL, &error_preup, &error_up) >= 0) || (errno != EINVAL)) { - printf("Something is wrong in nozzle_set_up sanity checks\n"); - err = -1; - goto out_clean; - } - - printf("Pass NULL to error_preup set_up\n"); - errno = 0; - if ((nozzle_set_up(nozzle, NULL, &error_up) >= 0) || (errno != EINVAL)) { - printf("Something is wrong in nozzle_set_up sanity checks\n"); - err = -1; - goto out_clean; - } - - printf("Pass NULL to error_up set_up\n"); - errno = 0; - if ((nozzle_set_up(nozzle, &error_preup, NULL) >= 0) || (errno != EINVAL)) { + if ((nozzle_set_up(NULL) >= 0) || (errno != EINVAL)) { printf("Something is wrong in nozzle_set_up sanity checks\n"); err = -1; goto out_clean; } printf("Pass NULL to nozzle set_down\n"); errno = 0; if ((nozzle_set_down(NULL) >= 0) || (errno != EINVAL)) { printf("Something is wrong in nozzle_set_down sanity checks\n"); err = -1; goto out_clean; } out_clean: nozzle_close(nozzle); return err; } static int check_knet_close_leak(void) { char device_name[IFNAMSIZ]; size_t size = IFNAMSIZ; int err=0; nozzle_t nozzle; char *error_string = NULL; printf("Testing close leak (needs valgrind)\n"); memset(device_name, 0, size); nozzle = nozzle_open(device_name, size, NULL); if (!nozzle) { printf("Unable to init %s\n", device_name); return -1; } printf("Adding ip: %s/24\n", testipv4_1); err = nozzle_add_ip(nozzle, testipv4_1, "24", &error_string); if (error_string) { printf("add ip output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to assign IP address\n"); err=-1; goto out_clean; } printf("Adding ip: %s/24\n", testipv4_2); err = nozzle_add_ip(nozzle, testipv4_2, "24", &error_string); if (error_string) { printf("add ip output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to assign IP address\n"); err=-1; goto out_clean; } out_clean: nozzle_close(nozzle); return err; } static int check_knet_set_del_ip(void) { char device_name[IFNAMSIZ]; size_t size = IFNAMSIZ; char verifycmd[1024]; int err=0; nozzle_t nozzle; char *ip_list = NULL; int ip_list_entries = 0, i, offset = 0; char *error_string = NULL; printf("Testing interface add/remove ip\n"); memset(device_name, 0, size); nozzle = nozzle_open(device_name, size, NULL); if (!nozzle) { printf("Unable to init %s\n", device_name); return -1; } printf("Adding ip: %s/24\n", testipv4_1); err = nozzle_add_ip(nozzle, testipv4_1, "24", &error_string); if (error_string) { printf("add ip output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to assign IP address\n"); err=-1; goto out_clean; } printf("Adding ip: %s/24\n", testipv4_2); err = nozzle_add_ip(nozzle, testipv4_2, "24", &error_string); if (error_string) { printf("add ip output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to assign IP address\n"); err=-1; goto out_clean; } printf("Adding duplicate ip: %s/24\n", testipv4_1); err = nozzle_add_ip(nozzle, testipv4_1, "24", &error_string); if (error_string) { printf("add ip output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to find IP address in libnozzle db\n"); err=-1; goto out_clean; } printf("Checking ip: %s/24\n", testipv4_1); memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q %s/24", nozzle->name, testipv4_1); #endif #ifdef KNET_BSD "ifconfig %s | grep -q %s", nozzle->name, testipv4_1); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (err) { printf("Unable to verify IP address\n"); err=-1; goto out_clean; } printf("Get ip list from libnozzle:\n"); if (nozzle_get_ips(nozzle, &ip_list, &ip_list_entries) < 0) { printf("Not enough mem?\n"); err=-1; goto out_clean; } if (ip_list_entries != 2) { printf("Didn't get enough ip back from libnozzle?\n"); err=-1; goto out_clean; } for (i = 1; i <= ip_list_entries; i++) { printf("Found IP %s %s in libnozzle db\n", ip_list + offset, ip_list + offset + strlen(ip_list + offset) + 1); offset = offset + strlen(ip_list) + 1; offset = offset + strlen(ip_list + offset) + 1; } free(ip_list); printf("Deleting ip: %s/24\n", testipv4_1); err = nozzle_del_ip(nozzle, testipv4_1, "24", &error_string); if (error_string) { printf("del ip output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to delete IP address\n"); err=-1; goto out_clean; } printf("Deleting ip: %s/24\n", testipv4_2); err = nozzle_del_ip(nozzle, testipv4_2, "24", &error_string); if (error_string) { printf("del ip output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to delete IP address\n"); err=-1; goto out_clean; } printf("Deleting again ip: %s/24\n", testipv4_1); err = nozzle_del_ip(nozzle, testipv4_1, "24", &error_string); if (error_string) { printf("del ip output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to delete IP address\n"); err=-1; goto out_clean; } memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q %s/24", nozzle->name, testipv4_1); #endif #ifdef KNET_BSD "ifconfig %s | grep -q %s", nozzle->name, testipv4_1); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (!err) { printf("Unable to verify IP address\n"); err=-1; goto out_clean; } printf("Adding ip: %s/64\n", testipv6_1); err = nozzle_add_ip(nozzle, testipv6_1, "64", &error_string); if (error_string) { printf("add ipv6 output: %s\n", error_string); free(error_string); error_string = NULL; } if (err < 0) { printf("Unable to assign IP address\n"); err=-1; goto out_clean; } memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1); #endif #ifdef KNET_BSD "ifconfig %s | grep -q %s", nozzle->name, testipv6_1); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (err) { printf("Unable to verify IP address\n"); err=-1; goto out_clean; } printf("Deleting ip: %s/64\n", testipv6_1); err = nozzle_del_ip(nozzle, testipv6_1, "64", &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (err) { printf("Unable to delete IP address\n"); err=-1; goto out_clean; } memset(verifycmd, 0, sizeof(verifycmd)); snprintf(verifycmd, sizeof(verifycmd)-1, #ifdef KNET_LINUX "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1); #endif #ifdef KNET_BSD "ifconfig %s | grep -q %s", nozzle->name, testipv6_1); #endif err = execute_bin_sh_command(verifycmd, &error_string); if (error_string) { printf("Error string: %s\n", error_string); free(error_string); error_string = NULL; } if (!err) { printf("Unable to verify IP address\n"); err=-1; goto out_clean; } out_clean: nozzle_close(nozzle); return err; } static void make_local_ips(void) { pid_t mypid; uint8_t *pid; uint8_t i; if (sizeof(pid_t) < 4) { printf("pid_t is smaller than 4 bytes?\n"); exit(77); } memset(testipv4_1, 0, sizeof(testipv4_1)); memset(testipv4_2, 0, sizeof(testipv4_2)); memset(testipv6_1, 0, sizeof(testipv6_1)); memset(testipv6_2, 0, sizeof(testipv6_2)); mypid = getpid(); pid = (uint8_t *)&mypid; for (i = 0; i < sizeof(pid_t); i++) { if (pid[i] == 0) { pid[i] = 128; } } randombyte = pid[1]; snprintf(testipv4_1, sizeof(testipv4_1) - 1, "127.%u.%u.%u", pid[1], pid[2], pid[0]); snprintf(testipv4_2, sizeof(testipv4_2) - 1, "127.%u.%d.%u", pid[1], pid[2]+1, pid[0]); snprintf(testipv6_1, sizeof(testipv6_1) - 1, "fd%x:%x%x::1", pid[1], pid[2], pid[0]); snprintf(testipv6_2, sizeof(testipv6_2) - 1, "fd%x:%x%x:1::1", pid[1], pid[2], pid[0]); } int main(void) { if (geteuid() != 0) { printf("This test requires root privileges\n"); exit(77); } make_local_ips(); if (check_nozzle_open_close() < 0) return -1; if (check_knet_multi_eth() < 0) return -1; if (check_knet_mtu() < 0) return -1; if (check_knet_mtu_ipv6() < 0) return -1; if (check_knet_mac() < 0) return -1; if (check_nozzle_execute_bin_sh_command() < 0) return -1; if (check_knet_up_down() < 0) return -1; if (check_knet_set_del_ip() < 0) return -1; if (check_knet_close_leak() < 0) return -1; return 0; }