X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fodhcpd.git;a=blobdiff_plain;f=src%2Fconfig.c;h=c3e2437901f7db340a8ca93d5eeec3382b2a7a68;hp=4aaded9f342e1b72c440956987bf6c4d6e8a8c35;hb=HEAD;hpb=8cc7121600eab0e28495e48f559d4886ba879c95 diff --git a/src/config.c b/src/config.c index 4aaded9..c3e2437 100644 --- a/src/config.c +++ b/src/config.c @@ -1,16 +1,27 @@ +#include #include #include #include +#include +#include +#include +#include +#include +#include #include #include +#include #include "odhcpd.h" static struct blob_buf b; +static int reload_pipe[2]; struct list_head leases = LIST_HEAD_INIT(leases); struct list_head interfaces = LIST_HEAD_INIT(interfaces); -struct config config = {false, NULL, NULL}; +struct config config = {.legacy = false, .main_dhcpv4 = false, + .dhcp_cb = NULL, .dhcp_statefile = NULL, + .log_level = LOG_INFO}; enum { IFACE_ATTR_INTERFACE, @@ -27,16 +38,31 @@ enum { IFACE_ATTR_DHCPV4, IFACE_ATTR_DHCPV6, IFACE_ATTR_NDP, + IFACE_ATTR_ROUTER, IFACE_ATTR_DNS, IFACE_ATTR_DOMAIN, - IFACE_ATTR_ULA_COMPAT, + IFACE_ATTR_FILTER_CLASS, + IFACE_ATTR_DHCPV4_FORCERECONF, + IFACE_ATTR_DHCPV6_RAW, + IFACE_ATTR_DHCPV6_ASSIGNALL, IFACE_ATTR_RA_DEFAULT, IFACE_ATTR_RA_MANAGEMENT, IFACE_ATTR_RA_OFFLINK, IFACE_ATTR_RA_PREFERENCE, + IFACE_ATTR_RA_ADVROUTER, + IFACE_ATTR_RA_MININTERVAL, + IFACE_ATTR_RA_MAXINTERVAL, + IFACE_ATTR_RA_LIFETIME, + IFACE_ATTR_RA_USELEASETIME, + IFACE_ATTR_RA_REACHABLETIME, + IFACE_ATTR_RA_RETRANSTIME, + IFACE_ATTR_RA_HOPLIMIT, + IFACE_ATTR_RA_MTU, + IFACE_ATTR_PD_MANAGER, + IFACE_ATTR_PD_CER, IFACE_ATTR_NDPROXY_ROUTING, IFACE_ATTR_NDPROXY_SLAVE, - IFACE_ATTR_NDPROXY_STATIC, + IFACE_ATTR_PREFIX_FILTER, IFACE_ATTR_MAX }; @@ -55,23 +81,37 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = { [IFACE_ATTR_DHCPV4] = { .name = "dhcpv4", .type = BLOBMSG_TYPE_STRING }, [IFACE_ATTR_DHCPV6] = { .name = "dhcpv6", .type = BLOBMSG_TYPE_STRING }, [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING }, + [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY }, [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY }, [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY }, - [IFACE_ATTR_ULA_COMPAT] = { .name = "ula_compat", .type = BLOBMSG_TYPE_BOOL }, + [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING }, + [IFACE_ATTR_DHCPV4_FORCERECONF] = { .name = "dhcpv4_forcereconf", .type = BLOBMSG_TYPE_BOOL }, + [IFACE_ATTR_DHCPV6_RAW] = { .name = "dhcpv6_raw", .type = BLOBMSG_TYPE_STRING }, + [IFACE_ATTR_DHCPV6_ASSIGNALL] = { .name ="dhcpv6_assignall", .type = BLOBMSG_TYPE_BOOL }, + [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING }, + [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING }, [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 }, [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 }, [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL }, [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING }, + [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL }, + [IFACE_ATTR_RA_MININTERVAL] = { .name = "ra_mininterval", .type = BLOBMSG_TYPE_INT32 }, + [IFACE_ATTR_RA_MAXINTERVAL] = { .name = "ra_maxinterval", .type = BLOBMSG_TYPE_INT32 }, + [IFACE_ATTR_RA_LIFETIME] = { .name = "ra_lifetime", .type = BLOBMSG_TYPE_INT32 }, + [IFACE_ATTR_RA_USELEASETIME] = { .name = "ra_useleasetime", .type = BLOBMSG_TYPE_BOOL }, + [IFACE_ATTR_RA_REACHABLETIME] = { .name = "ra_reachabletime", .type = BLOBMSG_TYPE_INT32 }, + [IFACE_ATTR_RA_RETRANSTIME] = { .name = "ra_retranstime", .type = BLOBMSG_TYPE_INT32 }, + [IFACE_ATTR_RA_HOPLIMIT] = { .name = "ra_hoplimit", .type = BLOBMSG_TYPE_INT32 }, + [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 }, [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL }, [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL }, - [IFACE_ATTR_NDPROXY_STATIC] = { .name = "ndproxy_static", .type = BLOBMSG_TYPE_ARRAY }, + [IFACE_ATTR_PREFIX_FILTER] = { .name = "prefix_filter", .type = BLOBMSG_TYPE_STRING }, }; static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = { [IFACE_ATTR_UPSTREAM] = { .type = BLOBMSG_TYPE_STRING }, [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING }, [IFACE_ATTR_DOMAIN] = { .type = BLOBMSG_TYPE_STRING }, - [IFACE_ATTR_NDPROXY_STATIC] = { .type = BLOBMSG_TYPE_STRING }, }; const struct uci_blob_param_list interface_attr_list = { @@ -80,52 +120,85 @@ const struct uci_blob_param_list interface_attr_list = { .info = iface_attr_info, }; - enum { LEASE_ATTR_IP, LEASE_ATTR_MAC, LEASE_ATTR_DUID, LEASE_ATTR_HOSTID, - LEASE_ATTR_HOSTNAME, + LEASE_ATTR_LEASETIME, + LEASE_ATTR_NAME, LEASE_ATTR_MAX }; - static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = { [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING }, [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING }, [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING }, [LEASE_ATTR_HOSTID] = { .name = "hostid", .type = BLOBMSG_TYPE_STRING }, - [LEASE_ATTR_HOSTNAME] = { .name = "hostname", .type = BLOBMSG_TYPE_STRING }, + [LEASE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING }, + [LEASE_ATTR_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING }, }; - const struct uci_blob_param_list lease_attr_list = { .n_params = LEASE_ATTR_MAX, .params = lease_attrs, }; - enum { ODHCPD_ATTR_LEGACY, + ODHCPD_ATTR_MAINDHCP, ODHCPD_ATTR_LEASEFILE, ODHCPD_ATTR_LEASETRIGGER, + ODHCPD_ATTR_LOGLEVEL, ODHCPD_ATTR_MAX }; - static const struct blobmsg_policy odhcpd_attrs[LEASE_ATTR_MAX] = { [ODHCPD_ATTR_LEGACY] = { .name = "legacy", .type = BLOBMSG_TYPE_BOOL }, + [ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL }, [ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING }, [ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING }, + [ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 }, }; - const struct uci_blob_param_list odhcpd_attr_list = { .n_params = ODHCPD_ATTR_MAX, .params = odhcpd_attrs, }; +static int mkdir_p(char *dir, mode_t mask) +{ + char *l = strrchr(dir, '/'); + int ret; + + if (!l) + return 0; + + *l = '\0'; + + if (mkdir_p(dir, mask)) + return -1; + + *l = '/'; + + ret = mkdir(dir, mask); + if (ret && errno == EEXIST) + return 0; + + if (ret) + syslog(LOG_ERR, "mkdir(%s, %d) failed: %m\n", dir, mask); + + return ret; +} + +static void free_lease(struct lease *l) +{ + if (l->head.next) + list_del(&l->head); + + free(l->duid); + free(l); +} static struct interface* get_interface(const char *name) { @@ -136,60 +209,77 @@ static struct interface* get_interface(const char *name) return NULL; } +static void set_interface_defaults(struct interface *iface) +{ + iface->learn_routes = 1; + iface->dhcpv4_leasetime = 43200; + iface->dhcpv6_assignall = true; + iface->ra_managed = RA_MANAGED_MFLAG; + iface->ra_maxinterval = 600; + iface->ra_mininterval = iface->ra_maxinterval/3; + iface->ra_lifetime = -1; +} static void clean_interface(struct interface *iface) { free(iface->dns); free(iface->search); free(iface->upstream); - free(iface->static_ndp); + free(iface->dhcpv4_router); free(iface->dhcpv4_dns); + free(iface->dhcpv6_raw); + free(iface->filter_class); memset(&iface->ra, 0, sizeof(*iface) - offsetof(struct interface, ra)); + set_interface_defaults(iface); } - static void close_interface(struct interface *iface) { if (iface->head.next) list_del(&iface->head); - setup_router_interface(iface, false); - setup_dhcpv6_interface(iface, false); - setup_ndp_interface(iface, false); - setup_dhcpv4_interface(iface, false); + router_setup_interface(iface, false); + dhcpv6_setup_interface(iface, false); + ndp_setup_interface(iface, false); +#ifdef DHCPV4_SUPPORT + dhcpv4_setup_interface(iface, false); +#endif clean_interface(iface); + free(iface->addr4); + free(iface->addr6); + free(iface->ifname); free(iface); } - static int parse_mode(const char *mode) { - if (!strcmp(mode, "disabled")) { - return RELAYD_DISABLED; - } else if (!strcmp(mode, "server")) { - return RELAYD_SERVER; - } else if (!strcmp(mode, "relay")) { - return RELAYD_RELAY; - } else if (!strcmp(mode, "hybrid")) { - return RELAYD_HYBRID; - } else { + if (!strcmp(mode, "disabled")) + return MODE_DISABLED; + else if (!strcmp(mode, "server")) + return MODE_SERVER; + else if (!strcmp(mode, "relay")) + return MODE_RELAY; + else if (!strcmp(mode, "hybrid")) + return MODE_HYBRID; + else return -1; - } } - static void set_config(struct uci_section *s) { struct blob_attr *tb[ODHCPD_ATTR_MAX], *c; blob_buf_init(&b, 0); - uci_to_blob(&b, s, &lease_attr_list); - blobmsg_parse(lease_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head)); + uci_to_blob(&b, s, &odhcpd_attr_list); + blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head)); if ((c = tb[ODHCPD_ATTR_LEGACY])) config.legacy = blobmsg_get_bool(c); + if ((c = tb[ODHCPD_ATTR_MAINDHCP])) + config.main_dhcpv4 = blobmsg_get_bool(c); + if ((c = tb[ODHCPD_ATTR_LEASEFILE])) { free(config.dhcp_statefile); config.dhcp_statefile = strdup(blobmsg_get_string(c)); @@ -199,8 +289,44 @@ static void set_config(struct uci_section *s) free(config.dhcp_cb); config.dhcp_cb = strdup(blobmsg_get_string(c)); } + + if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) { + int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK); + + if (config.log_level != log_level) { + config.log_level = log_level; + setlogmask(LOG_UPTO(config.log_level)); + } + } } +static double parse_leasetime(struct blob_attr *c) { + char *val = blobmsg_get_string(c), *endptr = NULL; + double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX; + + if (time && endptr && endptr[0]) { + if (endptr[0] == 's') + time *= 1; + else if (endptr[0] == 'm') + time *= 60; + else if (endptr[0] == 'h') + time *= 3600; + else if (endptr[0] == 'd') + time *= 24 * 3600; + else if (endptr[0] == 'w') + time *= 7 * 24 * 3600; + else + goto err; + } + + if (time < 60) + time = 60; + + return time; + +err: + return -1; +} static int set_lease(struct uci_section *s) { @@ -211,10 +337,12 @@ static int set_lease(struct uci_section *s) blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head)); size_t hostlen = 1; - if ((c = tb[LEASE_ATTR_HOSTNAME])) + if ((c = tb[LEASE_ATTR_NAME])) hostlen = blobmsg_data_len(c); struct lease *lease = calloc(1, sizeof(*lease) + hostlen); + if (!lease) + goto err; if (hostlen > 1) memcpy(lease->hostname, blobmsg_get_string(c), hostlen); @@ -230,6 +358,9 @@ static int set_lease(struct uci_section *s) if ((c = tb[LEASE_ATTR_DUID])) { size_t duidlen = (blobmsg_data_len(c) - 1) / 2; lease->duid = malloc(duidlen); + if (!lease->duid) + goto err; + ssize_t len = odhcpd_unhexlify(lease->duid, duidlen, blobmsg_get_string(c)); @@ -239,25 +370,37 @@ static int set_lease(struct uci_section *s) lease->duid_len = len; } - if ((c = tb[LEASE_ATTR_HOSTID])) - if (odhcpd_unhexlify((uint8_t*)&lease->hostid, sizeof(lease->hostid), - blobmsg_get_string(c)) < 0) + if ((c = tb[LEASE_ATTR_HOSTID])) { + errno = 0; + lease->hostid = strtoul(blobmsg_get_string(c), NULL, 16); + if (errno) + goto err; + } + + if ((c = tb[LEASE_ATTR_LEASETIME])) { + double time = parse_leasetime(c); + if (time < 0) goto err; + lease->dhcpv4_leasetime = time; + } + list_add(&lease->head, &leases); return 0; err: - free(lease->duid); - free(lease); + if (lease) + free_lease(lease); + return -1; } - -int config_parse_interface(struct blob_attr *b, const char *name, bool overwrite) +int config_parse_interface(void *data, size_t len, const char *name, bool overwrite) { struct blob_attr *tb[IFACE_ATTR_MAX], *c; - blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, blob_data(b), blob_len(b)); + bool get_addrs = false; + + blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len); if (tb[IFACE_ATTR_INTERFACE]) name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]); @@ -267,65 +410,82 @@ int config_parse_interface(struct blob_attr *b, const char *name, bool overwrite struct interface *iface = get_interface(name); if (!iface) { - iface = calloc(1, sizeof(*iface)); - strncpy(iface->name, name, sizeof(iface->name) - 1); + char *iface_name; + + iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1); + if (!iface) + return -1; + + iface->name = strcpy(iface_name, name); + + set_interface_defaults(iface); + list_add(&iface->head, &interfaces); - } else { - clean_interface(iface); + get_addrs = overwrite = true; } const char *ifname = NULL; + if (overwrite) { + if ((c = tb[IFACE_ATTR_IFNAME])) + ifname = blobmsg_get_string(c); + else if ((c = tb[IFACE_ATTR_NETWORKID])) + ifname = blobmsg_get_string(c); + } + #ifdef WITH_UBUS - if (overwrite) + if (overwrite || !iface->ifname) ifname = ubus_get_ifname(name); #endif - if ((c = tb[IFACE_ATTR_IFNAME])) - ifname = blobmsg_get_string(c); - else if ((c = tb[IFACE_ATTR_NETWORKID])) - ifname = blobmsg_get_string(c); - if (!ifname) - return -1; + if (!iface->ifname && !ifname) + goto err; - strncpy(iface->ifname, ifname, sizeof(iface->ifname) - 1); - iface->inuse = true; + if (ifname) { + free(iface->ifname); + iface->ifname = strdup(ifname); - if (overwrite) - clean_interface(iface); + if (!iface->ifname) + goto err; + + if (!iface->ifindex && + (iface->ifindex = if_nametoindex(iface->ifname)) <= 0) + goto err; + } + + if (get_addrs) { + ssize_t len = netlink_get_interface_addrs(iface->ifindex, + true, &iface->addr6); + + if (len > 0) + iface->addr6_len = len; + + len = netlink_get_interface_addrs(iface->ifindex, + false, &iface->addr4); + if (len > 0) + iface->addr4_len = len; + } + + iface->inuse = true; if ((c = tb[IFACE_ATTR_DYNAMICDHCP])) iface->no_dynamic_dhcp = !blobmsg_get_bool(c); - if ((c = tb[IFACE_ATTR_IGNORE])) + if (overwrite && (c = tb[IFACE_ATTR_IGNORE])) iface->ignore = blobmsg_get_bool(c); if ((c = tb[IFACE_ATTR_LEASETIME])) { - char *val = blobmsg_get_string(c), *endptr; - double time = strtod(val, &endptr); - if (time && endptr[0]) { - if (endptr[0] == 's') - time *= 1; - else if (endptr[0] == 'm') - time *= 60; - else if (endptr[0] == 'h') - time *= 3600; - else if (endptr[0] == 'd') - time *= 24 * 3600; - else if (endptr[0] == 'w') - time *= 7 * 24 * 3600; - else - goto err; - } + double time = parse_leasetime(c); + if (time < 0) + goto err; - if (time >= 60) - iface->dhcpv4_leasetime = time; + iface->dhcpv4_leasetime = time; } if ((c = tb[IFACE_ATTR_START])) { iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c)); - if (config.legacy) - iface->dhcpv4 = RELAYD_SERVER; + if (config.main_dhcpv4 && config.legacy) + iface->dhcpv4 = MODE_SERVER; } if ((c = tb[IFACE_ATTR_LIMIT])) @@ -335,16 +495,19 @@ int config_parse_interface(struct blob_attr *b, const char *name, bool overwrite if ((c = tb[IFACE_ATTR_MASTER])) iface->master = blobmsg_get_bool(c); - if ((c = tb[IFACE_ATTR_UPSTREAM])) { + if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) { struct blob_attr *cur; unsigned rem; blobmsg_for_each_attr(cur, c, rem) { - if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, NULL)) + if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false)) continue; iface->upstream = realloc(iface->upstream, iface->upstream_len + blobmsg_data_len(cur)); + if (!iface->upstream) + goto err; + memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur)); iface->upstream_len += blobmsg_data_len(cur); } @@ -359,8 +522,10 @@ int config_parse_interface(struct blob_attr *b, const char *name, bool overwrite } if ((c = tb[IFACE_ATTR_DHCPV4])) { - if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) - iface->dhcpv4 = mode; + if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) { + if (config.main_dhcpv4) + iface->dhcpv4 = mode; + } else goto err; } @@ -379,13 +544,34 @@ int config_parse_interface(struct blob_attr *b, const char *name, bool overwrite goto err; } + if ((c = tb[IFACE_ATTR_ROUTER])) { + struct blob_attr *cur; + unsigned rem; + + blobmsg_for_each_attr(cur, c, rem) { + if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false)) + continue; + + struct in_addr addr4; + if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) { + iface->dhcpv4_router = realloc(iface->dhcpv4_router, + (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router)); + if (!iface->dhcpv4_router) + goto err; + + iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4; + } else + goto err; + } + } + if ((c = tb[IFACE_ATTR_DNS])) { struct blob_attr *cur; unsigned rem; iface->always_rewrite_dns = true; blobmsg_for_each_attr(cur, c, rem) { - if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, NULL)) + if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false)) continue; struct in_addr addr4; @@ -393,14 +579,19 @@ int config_parse_interface(struct blob_attr *b, const char *name, bool overwrite if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) { iface->dhcpv4_dns = realloc(iface->dhcpv4_dns, (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns)); + if (!iface->dhcpv4_dns) + goto err; + iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4; } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) { iface->dns = realloc(iface->dns, (++iface->dns_cnt) * sizeof(*iface->dns)); + if (!iface->dns) + goto err; + iface->dns[iface->dns_cnt - 1] = addr6; - } else { + } else goto err; - } } } @@ -409,32 +600,101 @@ int config_parse_interface(struct blob_attr *b, const char *name, bool overwrite unsigned rem; blobmsg_for_each_attr(cur, c, rem) { - if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, NULL)) + if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false)) continue; uint8_t buf[256]; - int len = dn_comp(blobmsg_get_string(cur), buf, sizeof(buf), NULL, NULL); + char *domain = blobmsg_get_string(cur); + size_t domainlen = strlen(domain); + if (domainlen > 0 && domain[domainlen - 1] == '.') + domain[domainlen - 1] = 0; + + int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL); if (len <= 0) goto err; iface->search = realloc(iface->search, iface->search_len + len); + if (!iface->search) + goto err; + memcpy(&iface->search[iface->search_len], buf, len); iface->search_len += len; } } - if ((c = tb[IFACE_ATTR_ULA_COMPAT])) - iface->deprecate_ula_if_public_avail = blobmsg_get_bool(c); + if ((c = tb[IFACE_ATTR_FILTER_CLASS])) { + iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1); + memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1); + } + + if ((c = tb[IFACE_ATTR_DHCPV4_FORCERECONF])) + iface->dhcpv4_forcereconf = blobmsg_get_bool(c); + + if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) { + iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2; + iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len); + odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c)); + } + + if ((c = tb[IFACE_ATTR_DHCPV6_ASSIGNALL])) + iface->dhcpv6_assignall = blobmsg_get_bool(c); if ((c = tb[IFACE_ATTR_RA_DEFAULT])) iface->default_router = blobmsg_get_u32(c); if ((c = tb[IFACE_ATTR_RA_MANAGEMENT])) - iface->managed = blobmsg_get_u32(c); + iface->ra_managed = blobmsg_get_u32(c); + + if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) { + uint32_t ra_reachabletime = blobmsg_get_u32(c); + if (ra_reachabletime > 3600000) + goto err; + + iface->ra_reachabletime = ra_reachabletime; + } + + if ((c = tb[IFACE_ATTR_RA_RETRANSTIME])) { + uint32_t ra_retranstime = blobmsg_get_u32(c); + if (ra_retranstime > 60000) + goto err; + + iface->ra_retranstime = ra_retranstime; + } + + if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) { + uint32_t ra_hoplimit = blobmsg_get_u32(c); + if (ra_hoplimit > 255) + goto err; + + iface->ra_hoplimit = ra_hoplimit; + } + + if ((c = tb[IFACE_ATTR_RA_MTU])) { + uint32_t ra_mtu = blobmsg_get_u32(c); + if (ra_mtu < 1280 || ra_mtu > 65535) + goto err; + + iface->ra_mtu = ra_mtu; + } if ((c = tb[IFACE_ATTR_RA_OFFLINK])) iface->ra_not_onlink = blobmsg_get_bool(c); + if ((c = tb[IFACE_ATTR_RA_ADVROUTER])) + iface->ra_advrouter = blobmsg_get_bool(c); + + if ((c = tb[IFACE_ATTR_RA_MININTERVAL])) + iface->ra_mininterval = blobmsg_get_u32(c); + + if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL])) + iface->ra_maxinterval = blobmsg_get_u32(c); + + if ((c = tb[IFACE_ATTR_RA_LIFETIME])) + iface->ra_lifetime = blobmsg_get_u32(c); + + if ((c = tb[IFACE_ATTR_RA_USELEASETIME])) + iface->ra_useleasetime = blobmsg_get_bool(c); + if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) { const char *prio = blobmsg_get_string(c); @@ -448,28 +708,37 @@ int config_parse_interface(struct blob_attr *b, const char *name, bool overwrite goto err; } + if ((c = tb[IFACE_ATTR_PD_MANAGER])) + strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c), + sizeof(iface->dhcpv6_pd_manager) - 1); + + if ((c = tb[IFACE_ATTR_PD_CER]) && + inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1) + goto err; + if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING])) iface->learn_routes = blobmsg_get_bool(c); if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE])) iface->external = blobmsg_get_bool(c); - if ((c = tb[IFACE_ATTR_NDPROXY_STATIC])) { - struct blob_attr *cur; - unsigned rem; - - blobmsg_for_each_attr(cur, c, rem) { - if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, NULL)) - continue; - - int len = blobmsg_data_len(cur); - iface->static_ndp = realloc(iface->static_ndp, iface->static_ndp_len + len); - memcpy(&iface->static_ndp[iface->static_ndp_len], blobmsg_get_string(cur), len); - iface->static_ndp_len += len; + if ((c = tb[IFACE_ATTR_PREFIX_FILTER])) { + const char *str = blobmsg_get_string(c); + char *astr = malloc(strlen(str) + 1); + char *delim; + int l; + if (!astr || !strcpy(astr, str) || + (delim = strchr(astr, '/')) == NULL || (*(delim++) = 0) || + sscanf(delim, "%i", &l) == 0 || l > 128 || + inet_pton(AF_INET6, astr, &iface->pio_filter_addr) == 0) { + iface->pio_filter_length = 0; + } else { + iface->pio_filter_length = l; } + if (astr) + free(astr); } - iface->ignore = (iface->ifindex = if_nametoindex(iface->ifname)) < 0; return 0; err: @@ -481,110 +750,174 @@ static int set_interface(struct uci_section *s) { blob_buf_init(&b, 0); uci_to_blob(&b, s, &interface_attr_list); - return config_parse_interface(b.head, s->e.name, true); -} - -static volatile int do_reload = false; -static void set_stop(int signal) -{ - uloop_end(); - do_reload = (signal == SIGHUP); + return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true); } -void odhcpd_run(void) +void odhcpd_reload(void) { struct uci_context *uci = uci_alloc_context(); - signal(SIGTERM, set_stop); - signal(SIGHUP, set_stop); - signal(SIGINT, set_stop); - - do { - do_reload = uloop_cancelled = false; - - struct lease *l; - list_for_each_entry(l, &leases, head) { - list_del(&l->head); - free(l->duid); - free(l); + + while (!list_empty(&leases)) + free_lease(list_first_entry(&leases, struct lease, head)); + + struct interface *master = NULL, *i, *n; + + if (!uci) + return; + + list_for_each_entry(i, &interfaces, head) + clean_interface(i); + + struct uci_package *dhcp = NULL; + if (!uci_load(uci, "dhcp", &dhcp)) { + struct uci_element *e; + uci_foreach_element(&dhcp->sections, e) { + struct uci_section *s = uci_to_section(e); + if (!strcmp(s->type, "host")) + set_lease(s); + else if (!strcmp(s->type, "odhcpd")) + set_config(s); } - struct uci_package *dhcp = NULL; - if (!uci_load(uci, "dhcp", &dhcp)) { - struct uci_element *e; - uci_foreach_element(&dhcp->sections, e) { - struct uci_section *s = uci_to_section(e); - if (!strcmp(s->type, "lease")) - set_lease(s); - else if (!strcmp(s->type, "odhcpd")) - set_config(s); - } - - uci_foreach_element(&dhcp->sections, e) { - struct uci_section *s = uci_to_section(e); - if (!strcmp(s->type, "dhcp")) - set_interface(s); - } + uci_foreach_element(&dhcp->sections, e) { + struct uci_section *s = uci_to_section(e); + if (!strcmp(s->type, "dhcp")) + set_interface(s); } + } + + if (config.dhcp_statefile) { + char *path = strdup(config.dhcp_statefile); + + mkdir_p(dirname(path), 0755); + free(path); + } #ifdef WITH_UBUS - ubus_apply_network(); + ubus_apply_network(); #endif - // Evaluate hybrid mode for master - struct interface *master = NULL, *i, *n; - list_for_each_entry(i, &interfaces, head) { - if (!i->master) - continue; + bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false; + + /* Test for */ + list_for_each_entry(i, &interfaces, head) { + if (i->master) + continue; + + if (i->dhcpv6 == MODE_HYBRID || i->dhcpv6 == MODE_RELAY) + any_dhcpv6_slave = true; + + if (i->ra == MODE_HYBRID || i->ra == MODE_RELAY) + any_ra_slave = true; - enum odhcpd_mode hybrid_mode = RELAYD_DISABLED; + if (i->ndp == MODE_HYBRID || i->ndp == MODE_RELAY) + any_ndp_slave = true; + } + + /* Evaluate hybrid mode for master */ + list_for_each_entry(i, &interfaces, head) { + if (!i->master) + continue; + + enum odhcpd_mode hybrid_mode = MODE_DISABLED; #ifdef WITH_UBUS - if (ubus_has_prefix(i->name, i->ifname)) - hybrid_mode = RELAYD_RELAY; + if (!ubus_has_prefix(i->name, i->ifname)) + hybrid_mode = MODE_RELAY; #endif - if (i->dhcpv6 == RELAYD_HYBRID) - i->dhcpv6 = hybrid_mode; + if (i->dhcpv6 == MODE_HYBRID) + i->dhcpv6 = hybrid_mode; - if (i->ra == RELAYD_HYBRID) - i->ra = hybrid_mode; + if (i->dhcpv6 == MODE_RELAY && !any_dhcpv6_slave) + i->dhcpv6 = MODE_DISABLED; - if (i->ndp == RELAYD_HYBRID) - i->ndp = hybrid_mode; + if (i->ra == MODE_HYBRID) + i->ra = hybrid_mode; - if (i->dhcpv6 == RELAYD_RELAY || i->ra == RELAYD_RELAY || i->ndp == RELAYD_RELAY) - master = i; - } + if (i->ra == MODE_RELAY && !any_ra_slave) + i->ra = MODE_DISABLED; + if (i->ndp == MODE_HYBRID) + i->ndp = hybrid_mode; - list_for_each_entry_safe(i, n, &interfaces, head) { - if (i->inuse && !i->ignore) { - // Resolve hybrid mode - if (i->dhcpv6 == RELAYD_HYBRID) - i->dhcpv6 = (master && master->dhcpv6 == RELAYD_RELAY) ? - RELAYD_RELAY : RELAYD_SERVER; - - if (i->ra == RELAYD_HYBRID) - i->ra = (master && master->ra == RELAYD_RELAY) ? - RELAYD_RELAY : RELAYD_SERVER; - - if (i->ndp == RELAYD_HYBRID) - i->ndp = (master && master->ndp == RELAYD_RELAY) ? - RELAYD_RELAY : RELAYD_SERVER; - - setup_router_interface(i, true); - setup_dhcpv6_interface(i, true); - setup_ndp_interface(i, true); - setup_dhcpv4_interface(i, true); - } else { - close_interface(i); - } - } + if (i->ndp == MODE_RELAY && !any_ndp_slave) + i->ndp = MODE_DISABLED; + + if (i->dhcpv6 == MODE_RELAY || i->ra == MODE_RELAY || i->ndp == MODE_RELAY) + master = i; + } + + + list_for_each_entry_safe(i, n, &interfaces, head) { + if (i->inuse) { + /* Resolve hybrid mode */ + if (i->dhcpv6 == MODE_HYBRID) + i->dhcpv6 = (master && master->dhcpv6 == MODE_RELAY) ? + MODE_RELAY : MODE_SERVER; + + if (i->ra == MODE_HYBRID) + i->ra = (master && master->ra == MODE_RELAY) ? + MODE_RELAY : MODE_SERVER; + + if (i->ndp == MODE_HYBRID) + i->ndp = (master && master->ndp == MODE_RELAY) ? + MODE_RELAY : MODE_DISABLED; + + router_setup_interface(i, !i->ignore || i->ra != MODE_DISABLED); + dhcpv6_setup_interface(i, !i->ignore || i->dhcpv6 != MODE_DISABLED); + ndp_setup_interface(i, !i->ignore || i->ndp != MODE_DISABLED); +#ifdef DHCPV4_SUPPORT + dhcpv4_setup_interface(i, !i->ignore || i->dhcpv4 != MODE_DISABLED); +#endif + } else + close_interface(i); + } + + uci_unload(uci, dhcp); + uci_free_context(uci); +} + +static void handle_signal(int signal) +{ + char b[1] = {0}; + + if (signal == SIGHUP) { + if (write(reload_pipe[1], b, sizeof(b)) < 0) {} + } else + uloop_end(); +} + +static void reload_cb(struct uloop_fd *u, _unused unsigned int events) +{ + char b[512]; + if (read(u->fd, b, sizeof(b)) < 0) {} + + odhcpd_reload(); +} + +static struct uloop_fd reload_fd = { .cb = reload_cb }; + +void odhcpd_run(void) +{ + if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {} + + reload_fd.fd = reload_pipe[0]; + uloop_fd_add(&reload_fd, ULOOP_READ); + + signal(SIGTERM, handle_signal); + signal(SIGINT, handle_signal); + signal(SIGHUP, handle_signal); + +#ifdef WITH_UBUS + while (ubus_init()) + sleep(1); +#endif - uloop_run(); + odhcpd_reload(); + uloop_run(); - if (dhcp) - uci_unload(uci, dhcp); - } while (do_reload); + while (!list_empty(&interfaces)) + close_interface(list_first_entry(&interfaces, struct interface, head)); }