static void test_address_get(sd_rtnl *rtnl, int ifindex) { sd_rtnl_message *m; sd_rtnl_message *r; struct in_addr in_data; assert_se(sd_rtnl_message_new_addr(rtnl, &m, RTM_GETADDR, ifindex, AF_INET) >= 0); assert_se(m); assert_se(sd_rtnl_call(rtnl, m, -1, &r) == 1); assert_se(sd_rtnl_message_read_in_addr(r, IFA_LOCAL, &in_data) == 0); assert_se(sd_rtnl_message_read_in_addr(r, IFA_ADDRESS, &in_data) == 0); assert_se(sd_rtnl_message_read_in_addr(r, IFA_LABEL, &in_data) == 0); assert_se(sd_rtnl_message_read_in_addr(r, IFA_CACHEINFO, &in_data) == 0); assert_se(sd_rtnl_flush(rtnl) >= 0); assert_se((m = sd_rtnl_message_unref(m)) == NULL); assert_se((r = sd_rtnl_message_unref(r)) == NULL); }
static void test_route(void) { _cleanup_rtnl_message_unref_ sd_rtnl_message *req; struct in_addr addr, addr_data; uint32_t index = 2, u32_data; int r; r = sd_rtnl_message_new_route(NULL, &req, RTM_NEWROUTE, AF_INET, RTPROT_STATIC); if (r < 0) { log_error_errno(r, "Could not create RTM_NEWROUTE message: %m"); return; } addr.s_addr = htonl(INADDR_LOOPBACK); r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &addr); if (r < 0) { log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m"); return; } r = sd_rtnl_message_append_u32(req, RTA_OIF, index); if (r < 0) { log_error_errno(r, "Could not append RTA_OIF attribute: %m"); return; } assert_se(sd_rtnl_message_rewind(req) >= 0); assert_se(sd_rtnl_message_read_in_addr(req, RTA_GATEWAY, &addr_data) >= 0); assert_se(addr_data.s_addr == addr.s_addr); assert_se(sd_rtnl_message_read_u32(req, RTA_OIF, &u32_data) >= 0); assert_se(u32_data == index); assert_se((req = sd_rtnl_message_unref(req)) == NULL); }
int local_addresses(sd_rtnl *context, int ifindex, int af, struct local_address **ret) { _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL; _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL; _cleanup_free_ struct local_address *list = NULL; size_t n_list = 0, n_allocated = 0; sd_rtnl_message *m; int r; assert(ret); if (context) rtnl = sd_rtnl_ref(context); else { r = sd_rtnl_open(&rtnl, 0); if (r < 0) return r; } r = sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, af); 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)) { struct local_address *a; unsigned char flags; uint16_t type; int ifi, family; r = sd_rtnl_message_get_errno(m); if (r < 0) return r; r = sd_rtnl_message_get_type(m, &type); if (r < 0) return r; if (type != RTM_NEWADDR) continue; r = sd_rtnl_message_addr_get_ifindex(m, &ifi); if (r < 0) return r; if (ifindex > 0 && ifi != ifindex) continue; r = sd_rtnl_message_addr_get_family(m, &family); if (r < 0) return r; if (af != AF_UNSPEC && af != family) continue; r = sd_rtnl_message_addr_get_flags(m, &flags); if (r < 0) return r; if (flags & IFA_F_DEPRECATED) continue; if (!GREEDY_REALLOC0(list, n_allocated, n_list+1)) return -ENOMEM; a = list + n_list; r = sd_rtnl_message_addr_get_scope(m, &a->scope); if (r < 0) return r; if (ifindex == 0 && (a->scope == RT_SCOPE_HOST || a->scope == RT_SCOPE_NOWHERE)) continue; switch (family) { case AF_INET: r = sd_rtnl_message_read_in_addr(m, IFA_LOCAL, &a->address.in); if (r < 0) { r = sd_rtnl_message_read_in_addr(m, IFA_ADDRESS, &a->address.in); if (r < 0) continue; } break; case AF_INET6: r = sd_rtnl_message_read_in6_addr(m, IFA_LOCAL, &a->address.in6); if (r < 0) { r = sd_rtnl_message_read_in6_addr(m, IFA_ADDRESS, &a->address.in6); if (r < 0) continue; } break; default: continue; } a->ifindex = ifi; a->family = family; n_list++; }; if (n_list > 0) qsort(list, n_list, sizeof(struct local_address), address_compare); *ret = list; list = NULL; return (int) n_list; }
static int get_gateway_description( sd_rtnl *rtnl, sd_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 ifi, fam; r = sd_rtnl_message_get_errno(m); if (r < 0) { log_error_errno(r, "got error: %m"); continue; } r = sd_rtnl_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_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) continue; r = ieee_oui(hwdb, &mac, gateway_description); if (r < 0) continue; return 0; } return -ENODATA; }
int local_gateways(sd_rtnl *context, int ifindex, int af, struct local_address **ret) { _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL; _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL; _cleanup_free_ struct local_address *list = NULL; sd_rtnl_message *m = NULL; size_t n_list = 0, n_allocated = 0; int r; assert(ret); if (context) rtnl = sd_rtnl_ref(context); else { r = sd_rtnl_open(&rtnl, 0); if (r < 0) return r; } r = sd_rtnl_message_new_route(rtnl, &req, RTM_GETROUTE, af, RTPROT_UNSPEC); 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)) { struct local_address *a; uint16_t type; unsigned char dst_len, src_len; uint32_t ifi; int family; r = sd_rtnl_message_get_errno(m); if (r < 0) return r; r = sd_rtnl_message_get_type(m, &type); if (r < 0) return r; if (type != RTM_NEWROUTE) continue; /* We only care for default routes */ r = sd_rtnl_message_route_get_dst_prefixlen(m, &dst_len); if (r < 0) return r; if (dst_len != 0) continue; r = sd_rtnl_message_route_get_src_prefixlen(m, &src_len); if (r < 0) return r; if (src_len != 0) continue; r = sd_rtnl_message_read_u32(m, RTA_OIF, &ifi); if (r < 0) return r; if (ifindex > 0 && (int) ifi != ifindex) continue; r = sd_rtnl_message_route_get_family(m, &family); if (r < 0) return r; if (af != AF_UNSPEC && af != family) continue; if (!GREEDY_REALLOC0(list, n_allocated, n_list + 1)) return -ENOMEM; a = list + n_list; switch (family) { case AF_INET: r = sd_rtnl_message_read_in_addr(m, RTA_GATEWAY, &a->address.in); if (r < 0) continue; break; case AF_INET6: r = sd_rtnl_message_read_in6_addr(m, RTA_GATEWAY, &a->address.in6); if (r < 0) continue; break; default: continue; } sd_rtnl_message_read_u32(m, RTA_PRIORITY, &a->metric); a->ifindex = ifi; a->family = family; n_list++; } if (n_list > 0) qsort(list, n_list, sizeof(struct local_address), address_compare); *ret = list; list = NULL; return (int) n_list; }