chiark / gitweb /
networkctl: use the shared functions for enumerating the local gateways
[elogind.git] / src / network / networkctl.c
index 2da5c834a7d4d13519584583ce89140b34e28f7c..815ea1698d575b8ef11964e9933ad0f93eeda3e1 100644 (file)
@@ -33,6 +33,8 @@
 #include "udev-util.h"
 #include "arphrd-list.h"
 #include "local-addresses.h"
+#include "socket-util.h"
+#include "ether-addr-util.h"
 
 static bool arg_no_pager = false;
 static bool arg_legend = true;
@@ -88,27 +90,113 @@ static int link_get_type_string(int iftype, struct udev_device *d, char **ret) {
         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_rtnl_message *m, LinkInfo **ret) {
+        _cleanup_free_ LinkInfo *links = NULL;
+        size_t size = 0, c = 0;
+        sd_rtnl_message *i;
+        int r;
+
+        for (i = m; i; i = sd_rtnl_message_next(i)) {
+                const char *name;
+                unsigned iftype;
+                uint16_t type;
+                int ifindex;
+
+                r = sd_rtnl_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_rtnl_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_highlight_off();
+        } else if (streq_ptr(state, "degraded")) {
+                *on = ansi_highlight_yellow();
+                *off = ansi_highlight_off();
+        } 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_highlight_off();
+        } else if (streq_ptr(state, "configuring")) {
+                *on = ansi_highlight_yellow();
+                *off = ansi_highlight_off();
+        } else if (streq_ptr(state, "failed") || streq_ptr(state, "linger")) {
+                *on = ansi_highlight_red();
+                *off = ansi_highlight_off();
+        } else
+                *on = *off = "";
+}
+
 static int list_links(char **args, unsigned n) {
         _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
         _cleanup_udev_unref_ struct udev *udev = NULL;
         _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
-        sd_rtnl_message *i;
-        unsigned c = 0;
-        int r;
+        _cleanup_free_ LinkInfo *links = NULL;
+        int r, c, i;
 
         pager_open_if_enabled();
 
         r = sd_rtnl_open(&rtnl, 0);
-        if (r < 0) {
-                log_error("Failed to connect to netlink: %s", strerror(-r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to connect to netlink: %m");
 
         udev = udev_new();
-        if (!udev) {
-                log_error("Failed to connect to udev: %m");
-                return -errno;
-        }
+        if (!udev)
+                return log_error_errno(errno, "Failed to connect to udev: %m");
 
         r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
         if (r < 0)
@@ -119,57 +207,203 @@ static int list_links(char **args, unsigned n) {
                 return rtnl_log_create_error(r);
 
         r = sd_rtnl_call(rtnl, req, 0, &reply);
-        if (r < 0) {
-                log_error("Failed to enumerate links: %s", strerror(-r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to enumerate links: %m");
 
         if (arg_legend)
-                printf("%3s %-16s %-10s %-10s %-10s\n", "IDX", "LINK", "TYPE", "STATE", "OPERATIONAL");
+                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 = reply; i; i = sd_rtnl_message_next(i)) {
-                _cleanup_free_ char *state = NULL, *operational_state = NULL;
+        for (i = 0; i < c; i++) {
+                _cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
                 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
-                char devid[2 + DECIMAL_STR_MAX(int)];
+                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;
-                const char *name;
-                unsigned iftype;
+
+                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);
+                d = udev_device_new_from_device_id(udev, 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(struct udev_hwdb *hwdb, struct ether_addr *mac, char **ret) {
+        struct udev_list_entry *entry;
+        char *description;
+        char str[strlen("OUI:XXYYXXYYXXYY") + 1];
+
+        /* skip commonly misused 00:00:00 (Xerox) prefix */
+        if (memcmp(mac, "\0\0\0", 3) == 0)
+                return -EINVAL;
+
+        snprintf(str, sizeof(str), "OUI:" ETHER_ADDR_FORMAT_STR, ETHER_ADDR_FORMAT_VAL(*mac));
+
+        udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, str, 0))
+                if (strcmp(udev_list_entry_get_name(entry), "ID_OUI_FROM_DATABASE") == 0) {
+                        description = strdup(udev_list_entry_get_value(entry));
+                        if (!description)
+                                return -ENOMEM;
+
+                        *ret = description;
+                        return 0;
+                }
+
+        return -ENODATA;
+}
+
+static int get_gateway_description(sd_rtnl *rtnl, struct udev_hwdb *hwdb, int ifindex, int family,
+                                   union in_addr_union *gateway, char **gateway_description) {
+        _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
+        sd_rtnl_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_rtnl_message_request_dump(req, true);
+        if (r < 0)
+                return r;
+
+        r = sd_rtnl_call(rtnl, req, 0, &reply);
+        if (r < 0)
+                return r;
+
+        for (m = reply; m; m = sd_rtnl_message_next(m)) {
+                union in_addr_union gw = {};
+                struct ether_addr mac = {};
                 uint16_t type;
-                int ifindex;
+                int ifi, fam;
 
-                r = sd_rtnl_message_get_type(i, &type);
-                if (r < 0)
-                        return rtnl_log_parse_error(r);
+                r = sd_rtnl_message_get_errno(m);
+                if (r < 0) {
+                        log_error_errno(r, "got error: %m");
+                        continue;
+                }
 
-                if (type != RTM_NEWLINK)
+                r = sd_rtnl_message_get_type(m, &type);
+                if (r < 0) {
+                        log_error_errno(r, "could not get type: %m");
                         continue;
+                }
 
-                r = sd_rtnl_message_link_get_ifindex(i, &ifindex);
-                if (r < 0)
-                        return rtnl_log_parse_error(r);
+                if (type != RTM_NEWNEIGH) {
+                        log_error("type is not RTM_NEWNEIGH");
+                        continue;
+                }
 
-                r = sd_rtnl_message_read_string(i, IFLA_IFNAME, &name);
+                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_rtnl_message_read_in_addr(m, NDA_DST, &gw.in);
+                        if (r < 0)
+                                continue;
+
+                        break;
+                case AF_INET6:
+                        r = sd_rtnl_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_rtnl_message_read_ether_addr(m, NDA_LLADDR, &mac);
                 if (r < 0)
-                        return rtnl_log_parse_error(r);
+                        continue;
 
-                r = sd_rtnl_message_link_get_type(i, &iftype);
+                r = ieee_oui(hwdb, &mac, gateway_description);
                 if (r < 0)
-                        return rtnl_log_parse_error(r);
+                        continue;
 
-                sd_network_get_link_state(ifindex, &state);
-                sd_network_get_link_operational_state(ifindex, &operational_state);
+                return 0;
+        }
 
-                sprintf(devid, "n%i", ifindex);
-                d = udev_device_new_from_device_id(udev, devid);
+        return -ENODATA;
+}
 
-                link_get_type_string(iftype, d, &t);
+static int dump_gateways(sd_rtnl *rtnl, struct udev_hwdb *hwdb, const char *prefix, int ifindex) {
+        _cleanup_free_ struct local_address *local = NULL;
+        int r, n, i;
 
-                printf("%3i %-16s %-10s %-10s %-10s\n", ifindex, name, strna(t), strna(state), strna(operational_state));
-                c++;
-        }
+        n = local_gateways(rtnl, ifindex, AF_UNSPEC, &local);
+        if (n < 0)
+                return n;
 
-        if (arg_legend)
-                printf("\n%u links listed.\n", c);
+        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, ifindex, local[i].family, &local[i].address, &description);
+                if (r < 0)
+                        log_debug_errno(r, "Could not get description of gateway: %m");
+
+                if (description)
+                        printf("%*s%s (%s)\n",
+                               (int) strlen(prefix),
+                               i == 0 ? prefix : "",
+                               gateway, description);
+                else
+                        printf("%*s%s\n",
+                               (int) strlen(prefix),
+                               i == 0 ? prefix : "",
+                               gateway);
+        }
 
         return 0;
 }
@@ -178,7 +412,7 @@ static int dump_addresses(sd_rtnl *rtnl, const char *prefix, int ifindex) {
         _cleanup_free_ struct local_address *local = NULL;
         int r, n, i;
 
-        n = local_addresses(rtnl, ifindex, &local);
+        n = local_addresses(rtnl, ifindex, AF_UNSPEC, &local);
         if (n < 0)
                 return n;
 
@@ -210,13 +444,16 @@ static void dump_list(const char *prefix, char **l) {
 }
 
 static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
-        _cleanup_strv_free_ char **dns = NULL, **ntp = NULL;
-        _cleanup_free_ char *state = NULL, *operational_state = NULL;
+        _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **domains = NULL;
+        _cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
         _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
         _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+        _cleanup_udev_hwdb_unref_ struct udev_hwdb *hwdb = NULL;
         char devid[2 + DECIMAL_STR_MAX(int)];
-        _cleanup_free_ char *t = NULL;
-        const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL;
+        _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;
         struct ether_addr e;
         unsigned iftype;
         int r, ifindex;
@@ -241,10 +478,8 @@ static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
                 return rtnl_log_create_error(r);
 
         r = sd_rtnl_call(rtnl, req, 0, &reply);
-        if (r < 0) {
-                log_error("Failed to query link: %s", strerror(-r));
-                return r;
-        }
+        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)
@@ -276,11 +511,26 @@ static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
 
         sd_rtnl_message_read_u32(reply, IFLA_MTU, &mtu);
 
-        sd_network_get_link_state(ifindex, &state);
-        sd_network_get_link_operational_state(ifindex, &operational_state);
+        sd_network_link_get_operational_state(ifindex, &operational_state);
+        operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
 
-        sd_network_get_link_dns(ifindex, &dns);
-        sd_network_get_link_ntp(ifindex, &ntp);
+        sd_network_link_get_setup_state(ifindex, &setup_state);
+        setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
+
+        sd_network_link_get_dns(ifindex, &dns);
+        sd_network_link_get_ntp(ifindex, &ntp);
+        sd_network_link_get_domains(ifindex, &domains);
+        r = sd_network_link_get_wildcard_domain(ifindex);
+        if (r > 0) {
+                char *wildcard;
+
+                wildcard = strdup("*");
+                if (!wildcard)
+                        return log_oom();
+
+                if (strv_consume(&domains, wildcard) < 0)
+                        return log_oom();
+        }
 
         sprintf(devid, "n%i", ifindex);
         d = udev_device_new_from_device_id(udev, devid);
@@ -288,6 +538,7 @@ static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
         link_get_type_string(iftype, d, &t);
 
         if (d) {
+                link = udev_device_get_property_value(d, "ID_NET_LINK_FILE");
                 driver = udev_device_get_property_value(d, "ID_NET_DRIVER");
                 path = udev_device_get_property_value(d, "ID_PATH");
 
@@ -300,13 +551,19 @@ static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
                         model = udev_device_get_property_value(d, "ID_MODEL");
         }
 
-        printf("%i: %s\n", ifindex, name);
+        sd_network_link_get_network_file(ifindex, &network);
+
+        printf("%s%s%s %i: %s\n", on_color_operational, draw_special_char(DRAW_BLACK_CIRCLE), off_color_operational, ifindex, name);
 
-        printf("        Type: %s\n"
-               "       State: %s (%s)\n",
+        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),
-               strna(operational_state),
-               strna(state));
+               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);
@@ -317,16 +574,24 @@ static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
         if (model)
                 printf("       Model: %s\n", model);
 
-        if (have_mac)
-                printf("  HW Address: %s\n", ether_ntoa(&e));
+        if (have_mac) {
+                char ea[ETHER_ADDR_TO_STRING_MAX];
+                printf("  HW Address: %s\n", ether_addr_to_string(&e, ea));
+        }
 
         if (mtu > 0)
                 printf("         MTU: %u\n", mtu);
 
+        hwdb = udev_hwdb_new(udev);
+
+        dump_gateways(rtnl, hwdb, "     Gateway: ", ifindex);
+
         dump_addresses(rtnl, "     Address: ", ifindex);
 
         if (!strv_isempty(dns))
                 dump_list("         DNS: ", dns);
+        if (!strv_isempty(domains))
+                dump_list("      Domain: ", domains);
         if (!strv_isempty(ntp))
                 dump_list("         NTP: ", ntp);
 
@@ -339,19 +604,47 @@ static int link_status(char **args, unsigned n) {
         char **name;
         int r;
 
+        r = sd_rtnl_open(&rtnl, 0);
+        if (r < 0)
+                return log_error_errno(r, "Failed to connect to netlink: %m");
+
+        udev = udev_new();
+        if (!udev)
+                return log_error_errno(errno, "Failed to connect to udev: %m");
+
         if (n <= 1 && !arg_all) {
                 _cleanup_free_ char *operational_state = NULL;
-                _cleanup_strv_free_ char **dns = NULL, **ntp = NULL;
+                _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **domains = NULL;
+                _cleanup_free_ struct local_address *addresses = NULL;
+                const char *on_color_operational, *off_color_operational;
+                int i, c;
 
                 sd_network_get_operational_state(&operational_state);
-                if (operational_state)
-                        printf("       State: %s\n", operational_state);
+                operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
+
+                printf("       State: %s%s%s\n", on_color_operational, strna(operational_state), off_color_operational);
+
+                c = local_addresses(rtnl, 0, AF_UNSPEC, &addresses);
+                for (i = 0; i < c; i++) {
+                        _cleanup_free_ char *pretty = NULL;
+
+                        r = in_addr_to_string(addresses[i].family, &addresses[i].address, &pretty);
+                        if (r < 0)
+                                return log_oom();
+
+                        printf("%13s %s\n",
+                               i > 0 ? "" : "Address:", pretty);
+                }
 
                 sd_network_get_dns(&dns);
                 if (!strv_isempty(dns))
                         dump_list("         DNS: ", dns);
 
-                sd_network_get_dns(&ntp);
+                sd_network_get_domains(&domains);
+                if (!strv_isempty(domains))
+                        dump_list("      Domain: ", domains);
+
+                sd_network_get_ntp(&ntp);
                 if (!strv_isempty(ntp))
                         dump_list("         NTP: ", ntp);
 
@@ -360,23 +653,10 @@ static int link_status(char **args, unsigned n) {
 
         pager_open_if_enabled();
 
-        r = sd_rtnl_open(&rtnl, 0);
-        if (r < 0) {
-                log_error("Failed to connect to netlink: %s", strerror(-r));
-                return r;
-        }
-
-        udev = udev_new();
-        if (!udev) {
-                log_error("Failed to connect to udev: %m");
-                return -errno;
-        }
-
         if (arg_all) {
                 _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
-                sd_rtnl_message *i;
-                bool space = false;
-                uint16_t type;
+                _cleanup_free_ LinkInfo *links = NULL;
+                int c, i;
 
                 r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
                 if (r < 0)
@@ -387,30 +667,18 @@ static int link_status(char **args, unsigned n) {
                         return rtnl_log_create_error(r);
 
                 r = sd_rtnl_call(rtnl, req, 0, &reply);
-                if (r < 0) {
-                        log_error("Failed to enumerate links: %s", strerror(-r));
-                        return r;
-                }
-
-                for (i = reply; i; i = sd_rtnl_message_next(i)) {
-                        const char *nn;
-
-                        r = sd_rtnl_message_get_type(i, &type);
-                        if (r < 0)
-                                return rtnl_log_parse_error(r);
-
-                        if (type != RTM_NEWLINK)
-                                continue;
+                if (r < 0)
+                        return log_error_errno(r, "Failed to enumerate links: %m");
 
-                        r = sd_rtnl_message_read_string(i, IFLA_IFNAME, &nn);
-                        if (r < 0)
-                                return rtnl_log_parse_error(r);
+                c = decode_and_sort_links(reply, &links);
+                if (c < 0)
+                        return rtnl_log_parse_error(c);
 
-                        if (space)
+                for (i = 0; i < c; i++) {
+                        if (i > 0)
                                 fputc('\n', stdout);
 
-                        link_status_one(rtnl, udev, nn);
-                        space = true;
+                        link_status_one(rtnl, udev, links[i].name);
                 }
         }