diff options
Diffstat (limited to 'src/network/networkctl.c')
| -rw-r--r-- | src/network/networkctl.c | 1112 |
1 files changed, 1112 insertions, 0 deletions
diff --git a/src/network/networkctl.c b/src/network/networkctl.c new file mode 100644 index 0000000000..6e436d2043 --- /dev/null +++ b/src/network/networkctl.c @@ -0,0 +1,1112 @@ +/*** + This file is part of systemd. + + Copyright 2014 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <getopt.h> +#include <net/if.h> +#include <stdbool.h> + +#include <systemd/sd-device.h> +#include <systemd/sd-hwdb.h> +#include <systemd/sd-netlink.h> +#include <systemd/sd-network.h> + +#include "alloc-util.h" +#include "arphrd-list.h" +#include "device-util.h" +#include "ether-addr-util.h" +#include "hwdb-util.h" +#include "lldp.h" +#include "local-addresses.h" +#include "locale-util.h" +#include "netlink-util.h" +#include "pager.h" +#include "parse-util.h" +#include "socket-util.h" +#include "stdio-util.h" +#include "string-table.h" +#include "string-util.h" +#include "strv.h" +#include "terminal-util.h" +#include "util.h" +#include "verbs.h" + +static bool arg_no_pager = false; +static bool arg_legend = true; +static bool arg_all = false; + +static void pager_open_if_enabled(void) { + + if (arg_no_pager) + return; + + pager_open(false); +} + +static int link_get_type_string(int iftype, sd_device *d, char **ret) { + const char *t; + char *p; + + assert(ret); + + if (iftype == ARPHRD_ETHER && d) { + const char *devtype = NULL, *id = NULL; + /* WLANs have iftype ARPHRD_ETHER, but we want + * to show a more useful type string for + * them */ + + (void)sd_device_get_devtype(d, &devtype); + + if (streq_ptr(devtype, "wlan")) + id = "wlan"; + else if (streq_ptr(devtype, "wwan")) + id = "wwan"; + + if (id) { + p = strdup(id); + if (!p) + return -ENOMEM; + + *ret = p; + return 1; + } + } + + t = arphrd_to_name(iftype); + if (!t) { + *ret = NULL; + return 0; + } + + p = strdup(t); + if (!p) + return -ENOMEM; + + ascii_strlower(p); + *ret = p; + + return 0; +} + +typedef struct LinkInfo { + const char *name; + int ifindex; + unsigned iftype; +} LinkInfo; + +static int link_info_compare(const void *a, const void *b) { + const LinkInfo *x = a, *y = b; + + return x->ifindex - y->ifindex; +} + +static int decode_and_sort_links(sd_netlink_message *m, LinkInfo **ret) { + _cleanup_free_ LinkInfo *links = NULL; + size_t size = 0, c = 0; + sd_netlink_message *i; + int r; + + for (i = m; i; i = sd_netlink_message_next(i)) { + const char *name; + unsigned iftype; + uint16_t type; + int ifindex; + + r = sd_netlink_message_get_type(i, &type); + if (r < 0) + return r; + + if (type != RTM_NEWLINK) + continue; + + r = sd_rtnl_message_link_get_ifindex(i, &ifindex); + if (r < 0) + return r; + + r = sd_netlink_message_read_string(i, IFLA_IFNAME, &name); + if (r < 0) + return r; + + r = sd_rtnl_message_link_get_type(i, &iftype); + if (r < 0) + return r; + + if (!GREEDY_REALLOC(links, size, c+1)) + return -ENOMEM; + + links[c].name = name; + links[c].ifindex = ifindex; + links[c].iftype = iftype; + c++; + } + + qsort_safe(links, c, sizeof(LinkInfo), link_info_compare); + + *ret = links; + links = NULL; + + return (int) c; +} + +static void operational_state_to_color(const char *state, const char **on, const char **off) { + assert(on); + assert(off); + + if (streq_ptr(state, "routable")) { + *on = ansi_highlight_green(); + *off = ansi_normal(); + } else if (streq_ptr(state, "degraded")) { + *on = ansi_highlight_yellow(); + *off = ansi_normal(); + } else + *on = *off = ""; +} + +static void setup_state_to_color(const char *state, const char **on, const char **off) { + assert(on); + assert(off); + + if (streq_ptr(state, "configured")) { + *on = ansi_highlight_green(); + *off = ansi_normal(); + } else if (streq_ptr(state, "configuring")) { + *on = ansi_highlight_yellow(); + *off = ansi_normal(); + } else if (streq_ptr(state, "failed") || streq_ptr(state, "linger")) { + *on = ansi_highlight_red(); + *off = ansi_normal(); + } else + *on = *off = ""; +} + +static int list_links(int argc, char *argv[], void *userdata) { + _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; + _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; + _cleanup_free_ LinkInfo *links = NULL; + int r, c, i; + + pager_open_if_enabled(); + + r = sd_netlink_open(&rtnl); + if (r < 0) + return log_error_errno(r, "Failed to connect to netlink: %m"); + + r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0); + if (r < 0) + return rtnl_log_create_error(r); + + r = sd_netlink_message_request_dump(req, true); + if (r < 0) + return rtnl_log_create_error(r); + + r = sd_netlink_call(rtnl, req, 0, &reply); + if (r < 0) + return log_error_errno(r, "Failed to enumerate links: %m"); + + if (arg_legend) + printf("%3s %-16s %-18s %-11s %-10s\n", "IDX", "LINK", "TYPE", "OPERATIONAL", "SETUP"); + + c = decode_and_sort_links(reply, &links); + if (c < 0) + return rtnl_log_parse_error(c); + + for (i = 0; i < c; i++) { + _cleanup_free_ char *setup_state = NULL, *operational_state = NULL; + _cleanup_(sd_device_unrefp) sd_device *d = NULL; + const char *on_color_operational, *off_color_operational, + *on_color_setup, *off_color_setup; + char devid[2 + DECIMAL_STR_MAX(int)]; + _cleanup_free_ char *t = NULL; + + sd_network_link_get_operational_state(links[i].ifindex, &operational_state); + operational_state_to_color(operational_state, &on_color_operational, &off_color_operational); + + sd_network_link_get_setup_state(links[i].ifindex, &setup_state); + setup_state_to_color(setup_state, &on_color_setup, &off_color_setup); + + sprintf(devid, "n%i", links[i].ifindex); + (void)sd_device_new_from_device_id(&d, devid); + + link_get_type_string(links[i].iftype, d, &t); + + printf("%3i %-16s %-18s %s%-11s%s %s%-10s%s\n", + links[i].ifindex, links[i].name, strna(t), + on_color_operational, strna(operational_state), off_color_operational, + on_color_setup, strna(setup_state), off_color_setup); + } + + if (arg_legend) + printf("\n%i links listed.\n", c); + + return 0; +} + +/* IEEE Organizationally Unique Identifier vendor string */ +static int ieee_oui(sd_hwdb *hwdb, struct ether_addr *mac, char **ret) { + const char *description; + char modalias[strlen("OUI:XXYYXXYYXXYY") + 1], *desc; + int r; + + assert(ret); + + if (!hwdb) + return -EINVAL; + + if (!mac) + return -EINVAL; + + /* skip commonly misused 00:00:00 (Xerox) prefix */ + if (memcmp(mac, "\0\0\0", 3) == 0) + return -EINVAL; + + xsprintf(modalias, "OUI:" ETHER_ADDR_FORMAT_STR, + ETHER_ADDR_FORMAT_VAL(*mac)); + + r = sd_hwdb_get(hwdb, modalias, "ID_OUI_FROM_DATABASE", &description); + if (r < 0) + return r; + + desc = strdup(description); + if (!desc) + return -ENOMEM; + + *ret = desc; + + return 0; +} + +static int get_gateway_description( + sd_netlink *rtnl, + sd_hwdb *hwdb, + int ifindex, + int family, + union in_addr_union *gateway, + char **gateway_description) { + _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; + sd_netlink_message *m; + int r; + + assert(rtnl); + assert(ifindex >= 0); + assert(family == AF_INET || family == AF_INET6); + assert(gateway); + assert(gateway_description); + + r = sd_rtnl_message_new_neigh(rtnl, &req, RTM_GETNEIGH, ifindex, family); + if (r < 0) + return r; + + r = sd_netlink_message_request_dump(req, true); + if (r < 0) + return r; + + r = sd_netlink_call(rtnl, req, 0, &reply); + if (r < 0) + return r; + + for (m = reply; m; m = sd_netlink_message_next(m)) { + union in_addr_union gw = {}; + struct ether_addr mac = {}; + uint16_t type; + int ifi, fam; + + r = sd_netlink_message_get_errno(m); + if (r < 0) { + log_error_errno(r, "got error: %m"); + continue; + } + + r = sd_netlink_message_get_type(m, &type); + if (r < 0) { + log_error_errno(r, "could not get type: %m"); + continue; + } + + if (type != RTM_NEWNEIGH) { + log_error("type is not RTM_NEWNEIGH"); + continue; + } + + r = sd_rtnl_message_neigh_get_family(m, &fam); + if (r < 0) { + log_error_errno(r, "could not get family: %m"); + continue; + } + + if (fam != family) { + log_error("family is not correct"); + continue; + } + + r = sd_rtnl_message_neigh_get_ifindex(m, &ifi); + if (r < 0) { + log_error_errno(r, "could not get ifindex: %m"); + continue; + } + + if (ifindex > 0 && ifi != ifindex) + continue; + + switch (fam) { + case AF_INET: + r = sd_netlink_message_read_in_addr(m, NDA_DST, &gw.in); + if (r < 0) + continue; + + break; + case AF_INET6: + r = sd_netlink_message_read_in6_addr(m, NDA_DST, &gw.in6); + if (r < 0) + continue; + + break; + default: + continue; + } + + if (!in_addr_equal(fam, &gw, gateway)) + continue; + + r = sd_netlink_message_read_ether_addr(m, NDA_LLADDR, &mac); + if (r < 0) + continue; + + r = ieee_oui(hwdb, &mac, gateway_description); + if (r < 0) + continue; + + return 0; + } + + return -ENODATA; +} + +static int dump_gateways( + sd_netlink *rtnl, + sd_hwdb *hwdb, + const char *prefix, + int ifindex) { + _cleanup_free_ struct local_address *local = NULL; + int r, n, i; + + n = local_gateways(rtnl, ifindex, AF_UNSPEC, &local); + if (n < 0) + return n; + + for (i = 0; i < n; i++) { + _cleanup_free_ char *gateway = NULL, *description = NULL; + + r = in_addr_to_string(local[i].family, &local[i].address, &gateway); + if (r < 0) + return r; + + r = get_gateway_description(rtnl, hwdb, local[i].ifindex, local[i].family, &local[i].address, &description); + if (r < 0) + log_debug_errno(r, "Could not get description of gateway: %m"); + + printf("%*s%s", + (int) strlen(prefix), + i == 0 ? prefix : "", + gateway); + + if (description) + printf(" (%s)", description); + + /* Show interface name for the entry if we show + * entries for all interfaces */ + if (ifindex <= 0) { + char name[IF_NAMESIZE+1]; + + if (if_indextoname(local[i].ifindex, name)) { + fputs(" on ", stdout); + fputs(name, stdout); + } else + printf(" on %%%i", local[i].ifindex); + } + + fputc('\n', stdout); + } + + return 0; +} + +static int dump_addresses( + sd_netlink *rtnl, + const char *prefix, + int ifindex) { + + _cleanup_free_ struct local_address *local = NULL; + int r, n, i; + + n = local_addresses(rtnl, ifindex, AF_UNSPEC, &local); + if (n < 0) + return n; + + for (i = 0; i < n; i++) { + _cleanup_free_ char *pretty = NULL; + + r = in_addr_to_string(local[i].family, &local[i].address, &pretty); + if (r < 0) + return r; + + printf("%*s%s", + (int) strlen(prefix), + i == 0 ? prefix : "", + pretty); + + if (ifindex <= 0) { + char name[IF_NAMESIZE+1]; + + if (if_indextoname(local[i].ifindex, name)) { + fputs(" on ", stdout); + fputs(name, stdout); + } else + printf(" on %%%i", local[i].ifindex); + } + + fputc('\n', stdout); + } + + return 0; +} + +static void dump_list(const char *prefix, char **l) { + char **i; + + if (strv_isempty(l)) + return; + + STRV_FOREACH(i, l) { + printf("%*s%s\n", + (int) strlen(prefix), + i == l ? prefix : "", + *i); + } +} + +static int link_status_one( + sd_netlink *rtnl, + sd_hwdb *hwdb, + const char *name) { + _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **search_domains = NULL, **route_domains = NULL; + _cleanup_free_ char *setup_state = NULL, *operational_state = NULL, *tz = NULL; + _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; + _cleanup_(sd_device_unrefp) sd_device *d = NULL; + char devid[2 + DECIMAL_STR_MAX(int)]; + _cleanup_free_ char *t = NULL, *network = NULL; + const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL, *link = NULL; + const char *on_color_operational, *off_color_operational, + *on_color_setup, *off_color_setup; + _cleanup_strv_free_ char **carrier_bound_to = NULL; + _cleanup_strv_free_ char **carrier_bound_by = NULL; + struct ether_addr e; + unsigned iftype; + int r, ifindex; + bool have_mac; + uint32_t mtu; + + assert(rtnl); + assert(name); + + if (parse_ifindex(name, &ifindex) >= 0) + r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, ifindex); + else { + r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0); + if (r < 0) + return rtnl_log_create_error(r); + + r = sd_netlink_message_append_string(req, IFLA_IFNAME, name); + } + + if (r < 0) + return rtnl_log_create_error(r); + + r = sd_netlink_call(rtnl, req, 0, &reply); + if (r < 0) + return log_error_errno(r, "Failed to query link: %m"); + + r = sd_rtnl_message_link_get_ifindex(reply, &ifindex); + if (r < 0) + return rtnl_log_parse_error(r); + + r = sd_netlink_message_read_string(reply, IFLA_IFNAME, &name); + if (r < 0) + return rtnl_log_parse_error(r); + + r = sd_rtnl_message_link_get_type(reply, &iftype); + if (r < 0) + return rtnl_log_parse_error(r); + + have_mac = sd_netlink_message_read_ether_addr(reply, IFLA_ADDRESS, &e) >= 0; + if (have_mac) { + const uint8_t *p; + bool all_zeroes = true; + + for (p = (uint8_t*) &e; p < (uint8_t*) &e + sizeof(e); p++) + if (*p != 0) { + all_zeroes = false; + break; + } + + if (all_zeroes) + have_mac = false; + } + + (void) sd_netlink_message_read_u32(reply, IFLA_MTU, &mtu); + + (void) sd_network_link_get_operational_state(ifindex, &operational_state); + operational_state_to_color(operational_state, &on_color_operational, &off_color_operational); + + (void) sd_network_link_get_setup_state(ifindex, &setup_state); + setup_state_to_color(setup_state, &on_color_setup, &off_color_setup); + + (void) sd_network_link_get_dns(ifindex, &dns); + (void) sd_network_link_get_search_domains(ifindex, &search_domains); + (void) sd_network_link_get_route_domains(ifindex, &route_domains); + (void) sd_network_link_get_ntp(ifindex, &ntp); + + sprintf(devid, "n%i", ifindex); + + (void) sd_device_new_from_device_id(&d, devid); + + if (d) { + (void) sd_device_get_property_value(d, "ID_NET_LINK_FILE", &link); + (void) sd_device_get_property_value(d, "ID_NET_DRIVER", &driver); + (void) sd_device_get_property_value(d, "ID_PATH", &path); + + r = sd_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE", &vendor); + if (r < 0) + (void) sd_device_get_property_value(d, "ID_VENDOR", &vendor); + + r = sd_device_get_property_value(d, "ID_MODEL_FROM_DATABASE", &model); + if (r < 0) + (void) sd_device_get_property_value(d, "ID_MODEL", &model); + } + + link_get_type_string(iftype, d, &t); + + sd_network_link_get_network_file(ifindex, &network); + + sd_network_link_get_carrier_bound_to(ifindex, &carrier_bound_to); + sd_network_link_get_carrier_bound_by(ifindex, &carrier_bound_by); + + printf("%s%s%s %i: %s\n", on_color_operational, draw_special_char(DRAW_BLACK_CIRCLE), off_color_operational, ifindex, name); + + printf(" Link File: %s\n" + " Network File: %s\n" + " Type: %s\n" + " State: %s%s%s (%s%s%s)\n", + strna(link), + strna(network), + strna(t), + on_color_operational, strna(operational_state), off_color_operational, + on_color_setup, strna(setup_state), off_color_setup); + + if (path) + printf(" Path: %s\n", path); + if (driver) + printf(" Driver: %s\n", driver); + if (vendor) + printf(" Vendor: %s\n", vendor); + if (model) + printf(" Model: %s\n", model); + + if (have_mac) { + _cleanup_free_ char *description = NULL; + char ea[ETHER_ADDR_TO_STRING_MAX]; + + ieee_oui(hwdb, &e, &description); + + if (description) + printf(" HW Address: %s (%s)\n", ether_addr_to_string(&e, ea), description); + else + printf(" HW Address: %s\n", ether_addr_to_string(&e, ea)); + } + + if (mtu > 0) + printf(" MTU: %u\n", mtu); + + dump_addresses(rtnl, " Address: ", ifindex); + dump_gateways(rtnl, hwdb, " Gateway: ", ifindex); + + dump_list(" DNS: ", dns); + dump_list(" Search Domains: ", search_domains); + dump_list(" Route Domains: ", route_domains); + + dump_list(" NTP: ", ntp); + + dump_list("Carrier Bound To: ", carrier_bound_to); + dump_list("Carrier Bound By: ", carrier_bound_by); + + (void) sd_network_link_get_timezone(ifindex, &tz); + if (tz) + printf(" Time Zone: %s", tz); + + return 0; +} + +static int link_status(int argc, char *argv[], void *userdata) { + _cleanup_(sd_hwdb_unrefp) sd_hwdb *hwdb = NULL; + _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; + char **name; + int r; + + r = sd_netlink_open(&rtnl); + if (r < 0) + return log_error_errno(r, "Failed to connect to netlink: %m"); + + r = sd_hwdb_new(&hwdb); + if (r < 0) + log_debug_errno(r, "Failed to open hardware database: %m"); + + if (argc <= 1 && !arg_all) { + _cleanup_free_ char *operational_state = NULL; + _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **search_domains = NULL, **route_domains; + const char *on_color_operational, *off_color_operational; + + sd_network_get_operational_state(&operational_state); + operational_state_to_color(operational_state, &on_color_operational, &off_color_operational); + + printf("%s%s%s State: %s%s%s\n", + on_color_operational, draw_special_char(DRAW_BLACK_CIRCLE), off_color_operational, + on_color_operational, strna(operational_state), off_color_operational); + + dump_addresses(rtnl, " Address: ", 0); + dump_gateways(rtnl, hwdb, " Gateway: ", 0); + + sd_network_get_dns(&dns); + dump_list(" DNS: ", dns); + + sd_network_get_search_domains(&search_domains); + dump_list("Search Domains: ", search_domains); + + sd_network_get_route_domains(&route_domains); + dump_list(" Route Domains: ", route_domains); + + sd_network_get_ntp(&ntp); + dump_list(" NTP: ", ntp); + + return 0; + } + + pager_open_if_enabled(); + + if (arg_all) { + _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; + _cleanup_free_ LinkInfo *links = NULL; + int c, i; + + r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0); + if (r < 0) + return rtnl_log_create_error(r); + + r = sd_netlink_message_request_dump(req, true); + if (r < 0) + return rtnl_log_create_error(r); + + r = sd_netlink_call(rtnl, req, 0, &reply); + if (r < 0) + return log_error_errno(r, "Failed to enumerate links: %m"); + + c = decode_and_sort_links(reply, &links); + if (c < 0) + return rtnl_log_parse_error(c); + + for (i = 0; i < c; i++) { + if (i > 0) + fputc('\n', stdout); + + link_status_one(rtnl, hwdb, links[i].name); + } + } else { + STRV_FOREACH(name, argv + 1) { + if (name != argv + 1) + fputc('\n', stdout); + + link_status_one(rtnl, hwdb, *name); + } + } + + return 0; +} + +const char *lldp_system_capability_to_string(LLDPSystemCapabilities d) _const_; +LLDPSystemCapabilities lldp_system_capability_from_string(const char *d) _pure_; + +static const char* const lldp_system_capability_table[_LLDP_SYSTEM_CAPABILITIES_MAX + 1] = { + [LLDP_SYSTEM_CAPABILITIES_OTHER] = "O", + [LLDP_SYSTEM_CAPABILITIES_REPEATER] = "P", + [LLDP_SYSTEM_CAPABILITIES_BRIDGE] = "B", + [LLDP_SYSTEM_CAPABILITIES_WLAN_AP] = "W", + [LLDP_SYSTEM_CAPABILITIES_ROUTER] = "R", + [LLDP_SYSTEM_CAPABILITIES_PHONE] = "T", + [LLDP_SYSTEM_CAPABILITIES_DOCSIS] = "D", + [LLDP_SYSTEM_CAPABILITIES_STATION] = "A", + [LLDP_SYSTEM_CAPABILITIES_CVLAN] = "C", + [LLDP_SYSTEM_CAPABILITIES_SVLAN] = "S", + [LLDP_SYSTEM_CAPABILITIES_TPMR] = "M", + [_LLDP_SYSTEM_CAPABILITIES_MAX] = "N/A", +}; + +DEFINE_STRING_TABLE_LOOKUP(lldp_system_capability, LLDPSystemCapabilities); + +static char *lldp_system_caps(uint16_t cap) { + _cleanup_free_ char *s = NULL, *t = NULL; + char *capability; + + t = strdup("[ "); + if (!t) + return NULL; + + if (cap & LLDP_SYSTEM_CAPABILITIES_OTHER) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_OTHER), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_REPEATER) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_REPEATER), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_BRIDGE) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_BRIDGE), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_WLAN_AP) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_WLAN_AP), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_ROUTER) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_ROUTER), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_PHONE) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_PHONE), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_DOCSIS) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_DOCSIS), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_STATION) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_STATION), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_CVLAN) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_CVLAN), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_SVLAN) { + s = strjoin(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_SVLAN), " ", NULL); + if (!s) + return NULL; + + free(t); + t = s; + } + + if (cap & LLDP_SYSTEM_CAPABILITIES_TPMR) { + s = strappend(t, lldp_system_capability_to_string(LLDP_SYSTEM_CAPABILITIES_TPMR)); + if (!s) + return NULL; + + free(t); + } + + if (!s) { + s = strappend(t, lldp_system_capability_to_string(_LLDP_SYSTEM_CAPABILITIES_MAX)); + if (!s) + return NULL; + + free(t); + } + + t = strappend(s, "]"); + if (!t) + return NULL; + + free(s); + capability = t; + + s = NULL; + t = NULL; + + return capability; +} + +static int link_lldp_status(int argc, char *argv[], void *userdata) { + _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; + _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; + _cleanup_free_ LinkInfo *links = NULL; + double ttl = -1; + uint32_t capability; + int i, r, c, j; + const char *p; + char **s; + + pager_open_if_enabled(); + + r = sd_netlink_open(&rtnl); + if (r < 0) + return log_error_errno(r, "Failed to connect to netlink: %m"); + + r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0); + if (r < 0) + return rtnl_log_create_error(r); + + r = sd_netlink_message_request_dump(req, true); + if (r < 0) + return rtnl_log_create_error(r); + + r = sd_netlink_call(rtnl, req, 0, &reply); + if (r < 0) + return log_error_errno(r, "Failed to enumerate links: %m"); + + c = decode_and_sort_links(reply, &links); + if (c < 0) + return rtnl_log_parse_error(c); + + if (arg_legend) + printf("%s %16s %24s %16s %16s\n", "Local Intf", "Device ID", "Port ID", "TTL", "Capability"); + + for (i = j = 0; i < c; i++) { + _cleanup_free_ char *chassis = NULL, *port = NULL, *cap = NULL, *lldp = NULL; + _cleanup_strv_free_ char **l = NULL; + + r = sd_network_link_get_lldp(links[i].ifindex, &lldp); + if (r < 0) + continue; + + l = strv_split_newlines(lldp); + if (!l) + return -ENOMEM; + + STRV_FOREACH(s, l) { + + p = *s; + for (;;) { + _cleanup_free_ char *a = NULL, *b = NULL, *word = NULL; + + r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); + if (r < 0) + return log_error_errno(r, "Failed to parse LLDP syntax \"%s\": %m", *s); + + if (r == 0) + break; + + r = split_pair(word, "=", &a, &b); + if (r < 0) + continue; + + if (streq(a, "_Chassis")) { + r = free_and_strdup(&chassis, b); + if (r < 0) + return r; + + } else if (streq(a, "_Port")) { + r = free_and_strdup(&port, b); + if (r < 0) + return r; + + } else if (streq(a, "_TTL")) { + long long unsigned x = 0; + usec_t time; + + r = safe_atollu(b, &x); + if (r < 0 || (usec_t) x != x) + return log_warning_errno(r < 0 ? r : ERANGE, + "Failed to parse TTL \"%s\": %m", b); + + time = now(clock_boottime_or_monotonic()); + if (x < time) + continue; + + ttl = (double) (x - time) / USEC_PER_SEC; + + } else if (streq(a, "_CAP")) { + sscanf(b, "%x", &capability); + + cap = lldp_system_caps(capability); + } + + } + + if (ttl >= 0) { + printf("%10s %24s %16s %16f %16s\n", + links[i].name, + strna(chassis), strna(port), + ttl, cap); + j++; + } + } + } + + if (arg_legend) { + printf("\nCapability Codes:\n" + "(O) - Other, (P) - Repeater, (B) - Bridge , (W) - WLAN Access Point, (R) = Router,\n" + "(T) - Telephone, (D) - Data Over Cable Service Interface Specifications, (A) - Station,\n" + "(C) - Customer VLAN, (S) - Service VLAN, (M) - Two-port MAC Relay (TPMR)\n\n"); + + printf("Total entries displayed: %d\n", j); + } + + return 0; +} + +static void help(void) { + printf("%s [OPTIONS...]\n\n" + "Query and control the networking subsystem.\n\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --no-pager Do not pipe output into a pager\n" + " --no-legend Do not show the headers and footers\n" + " -a --all Show status for all links\n\n" + "Commands:\n" + " list List links\n" + " status [LINK...] Show link status\n" + " lldp Show lldp information\n" + , program_invocation_short_name); +} + +static int parse_argv(int argc, char *argv[]) { + + enum { + ARG_VERSION = 0x100, + ARG_NO_PAGER, + ARG_NO_LEGEND, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "no-pager", no_argument, NULL, ARG_NO_PAGER }, + { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, + { "all", no_argument, NULL, 'a' }, + {} + }; + + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "ha", options, NULL)) >= 0) { + + switch (c) { + + case 'h': + help(); + return 0; + + case ARG_VERSION: + return version(); + + case ARG_NO_PAGER: + arg_no_pager = true; + break; + + case ARG_NO_LEGEND: + arg_legend = false; + break; + + case 'a': + arg_all = true; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + } + + return 1; +} + +static int networkctl_main(int argc, char *argv[]) { + const Verb verbs[] = { + { "list", VERB_ANY, 1, VERB_DEFAULT, list_links }, + { "status", 1, VERB_ANY, 0, link_status }, + { "lldp", VERB_ANY, 1, VERB_DEFAULT, link_lldp_status }, + {} + }; + + return dispatch_verb(argc, argv, verbs, NULL); +} + +int main(int argc, char* argv[]) { + int r; + + log_parse_environment(); + log_open(); + + r = parse_argv(argc, argv); + if (r <= 0) + goto finish; + + r = networkctl_main(argc, argv); + +finish: + pager_close(); + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} |