dhcpv6-ia: allow up to 64 bit wide hostid
[project/odhcpd.git] / src / config.c
index 3d41e130f50b7308dc545e01b6104c7c1cc25eb0..71b786c913cc57202b1a5926ea52eb542df13c56 100644 (file)
@@ -35,6 +35,10 @@ struct config config = {.legacy = false, .main_dhcpv4 = false,
 #define START_DEFAULT  100
 #define LIMIT_DEFAULT  150
 
+#define HOSTID_LEN_MIN 12
+#define HOSTID_LEN_MAX 64
+#define HOSTID_LEN_DEFAULT HOSTID_LEN_MIN
+
 #define OAF_DHCPV6     (OAF_DHCPV6_NA | OAF_DHCPV6_PD)
 
 enum {
@@ -53,6 +57,7 @@ enum {
        IFACE_ATTR_NDP,
        IFACE_ATTR_ROUTER,
        IFACE_ATTR_DNS,
+       IFACE_ATTR_DNS_SERVICE,
        IFACE_ATTR_DOMAIN,
        IFACE_ATTR_FILTER_CLASS,
        IFACE_ATTR_DHCPV4_FORCERECONF,
@@ -60,6 +65,7 @@ enum {
        IFACE_ATTR_DHCPV6_ASSIGNALL,
        IFACE_ATTR_DHCPV6_PD,
        IFACE_ATTR_DHCPV6_NA,
+       IFACE_ATTR_DHCPV6_HOSTID_LEN,
        IFACE_ATTR_RA_DEFAULT,
        IFACE_ATTR_RA_MANAGEMENT,
        IFACE_ATTR_RA_FLAGS,
@@ -81,6 +87,7 @@ enum {
        IFACE_ATTR_NDPROXY_ROUTING,
        IFACE_ATTR_NDPROXY_SLAVE,
        IFACE_ATTR_PREFIX_FILTER,
+       IFACE_ATTR_PREFERRED_LIFETIME,
        IFACE_ATTR_MAX
 };
 
@@ -100,6 +107,7 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [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_DNS_SERVICE] = { .name = "dns_service", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
        [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
        [IFACE_ATTR_DHCPV4_FORCERECONF] = { .name = "dhcpv4_forcereconf", .type = BLOBMSG_TYPE_BOOL },
@@ -107,6 +115,7 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [IFACE_ATTR_DHCPV6_ASSIGNALL] = { .name ="dhcpv6_assignall", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_DHCPV6_PD] = { .name = "dhcpv6_pd", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_DHCPV6_NA] = { .name = "dhcpv6_na", .type = BLOBMSG_TYPE_BOOL },
+       [IFACE_ATTR_DHCPV6_HOSTID_LEN] = { .name = "dhcpv6_hostidlength", .type = BLOBMSG_TYPE_INT32 },
        [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 },
@@ -128,6 +137,7 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_PREFIX_FILTER] = { .name = "prefix_filter", .type = BLOBMSG_TYPE_STRING },
+       [IFACE_ATTR_PREFERRED_LIFETIME] = { .name = "preferred_lifetime", .type = BLOBMSG_TYPE_STRING },
 };
 
 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
@@ -142,17 +152,7 @@ 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_LEASETIME,
-       LEASE_ATTR_NAME,
-       LEASE_ATTR_MAX
-};
-
-static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
+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 },
@@ -196,31 +196,6 @@ static const struct { const char *name; uint8_t flag; } ra_flags[] = {
        { .name = NULL, },
 };
 
-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 set_interface_defaults(struct interface *iface)
 {
        iface->ignore = true;
@@ -230,11 +205,14 @@ static void set_interface_defaults(struct interface *iface)
        iface->ndp = MODE_DISABLED;
        iface->learn_routes = 1;
        iface->dhcp_leasetime = 43200;
+       iface->preferred_lifetime = 43200;
        iface->dhcpv4_start.s_addr = htonl(START_DEFAULT);
        iface->dhcpv4_end.s_addr = htonl(START_DEFAULT + LIMIT_DEFAULT - 1);
        iface->dhcpv6_assignall = true;
        iface->dhcpv6_pd = true;
        iface->dhcpv6_na = true;
+       iface->dhcpv6_hostid_len = HOSTID_LEN_DEFAULT;
+       iface->dns_service = true;
        iface->ra_flags = ND_RA_FLAG_OTHER;
        iface->ra_slaac = true;
        iface->ra_maxinterval = 600;
@@ -384,16 +362,15 @@ static void free_lease(struct lease *l)
        free(l);
 }
 
-static int set_lease(struct uci_section *s)
+
+int set_lease_from_blobmsg(struct blob_attr *ba)
 {
        struct blob_attr *tb[LEASE_ATTR_MAX], *c;
        struct lease *l;
        size_t duidlen = 0;
        uint8_t *duid;
 
-       blob_buf_init(&b, 0);
-       uci_to_blob(&b, s, &lease_attr_list);
-       blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
+       blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(ba), blob_len(ba));
 
        if ((c = tb[LEASE_ATTR_DUID]))
                duidlen = (blobmsg_data_len(c) - 1) / 2;
@@ -430,7 +407,7 @@ static int set_lease(struct uci_section *s)
 
        if ((c = tb[LEASE_ATTR_HOSTID])) {
                errno = 0;
-               l->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
+               l->hostid = strtoull(blobmsg_get_string(c), NULL, 16);
                if (errno)
                        goto err;
        } else {
@@ -457,11 +434,21 @@ err:
        return -1;
 }
 
+static int set_lease_from_uci(struct uci_section *s)
+{
+       blob_buf_init(&b, 0);
+       uci_to_blob(&b, s, &lease_attr_list);
+
+       return set_lease_from_blobmsg(b.head);
+}
+
 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
 {
        struct interface *iface;
        struct blob_attr *tb[IFACE_ATTR_MAX], *c;
        bool get_addrs = false;
+       int mode;
+       const char *ifname = NULL;
 
        blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
 
@@ -496,7 +483,6 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                get_addrs = overwrite = true;
        }
 
-       const char *ifname = NULL;
        if (overwrite) {
                if ((c = tb[IFACE_ATTR_IFNAME]))
                        ifname = blobmsg_get_string(c);
@@ -544,10 +530,24 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
        if ((c = tb[IFACE_ATTR_LEASETIME])) {
                double time = parse_leasetime(c);
-               if (time < 0)
-                       goto err;
 
-               iface->dhcp_leasetime = time;
+               if (time >= 0)
+                       iface->dhcp_leasetime = time;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_LEASETIME].name, iface->name);
+
+       }
+
+       if ((c = tb[IFACE_ATTR_PREFERRED_LIFETIME])) {
+               double time = parse_leasetime(c);
+
+               if (time >= 0)
+                       iface->preferred_lifetime = time;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_PREFERRED_LIFETIME].name, iface->name);
+
        }
 
        if ((c = tb[IFACE_ATTR_START])) {
@@ -584,7 +584,6 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                }
        }
 
-       int mode;
        if ((c = tb[IFACE_ATTR_RA])) {
                if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
                        iface->ra = mode;
@@ -592,7 +591,8 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                        if (iface->ra != MODE_DISABLED)
                                iface->ignore = false;
                } else
-                       goto err;
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_DHCPV4])) {
@@ -603,9 +603,9 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                                if (iface->dhcpv4 != MODE_DISABLED)
                                        iface->ignore = false;
                        }
-               }
-               else
-                       goto err;
+               } else
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface %s",
+                              iface_attrs[IFACE_ATTR_DHCPV4].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_DHCPV6])) {
@@ -615,7 +615,8 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                        if (iface->dhcpv6 != MODE_DISABLED)
                                iface->ignore = false;
                } else
-                       goto err;
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_DHCPV6].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_NDP])) {
@@ -625,7 +626,8 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                        if (iface->ndp != MODE_DISABLED)
                                iface->ignore = false;
                } else
-                       goto err;
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_NDP].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_ROUTER])) {
@@ -633,10 +635,11 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                unsigned rem;
 
                blobmsg_for_each_attr(cur, c, rem) {
+                       struct in_addr addr4;
+
                        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));
@@ -645,7 +648,8 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
                                iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
                        } else
-                               goto err;
+                               syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                      iface_attrs[IFACE_ATTR_ROUTER].name, iface->name);
                }
        }
 
@@ -655,14 +659,19 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
                iface->always_rewrite_dns = true;
                blobmsg_for_each_attr(cur, c, rem) {
+                       struct in_addr addr4;
+                       struct in6_addr addr6;
+
                        if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
                                continue;
 
-                       struct in_addr addr4;
-                       struct in6_addr addr6;
                        if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
-                               if (addr4.s_addr == INADDR_ANY)
-                                       goto err;
+                               if (addr4.s_addr == INADDR_ANY) {
+                                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                              iface_attrs[IFACE_ATTR_DNS].name, iface->name);
+
+                                       continue;
+                               }
 
                                iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
                                                (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
@@ -671,8 +680,12 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
                                iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
                        } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
-                               if (IN6_IS_ADDR_UNSPECIFIED(&addr6))
-                                       goto err;
+                               if (IN6_IS_ADDR_UNSPECIFIED(&addr6)) {
+                                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                              iface_attrs[IFACE_ATTR_DNS].name, iface->name);
+
+                                       continue;
+                               }
 
                                iface->dns = realloc(iface->dns,
                                                (++iface->dns_cnt) * sizeof(*iface->dns));
@@ -681,27 +694,40 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
                                iface->dns[iface->dns_cnt - 1] = addr6;
                        } else
-                               goto err;
+                               syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                      iface_attrs[IFACE_ATTR_DNS].name, iface->name);
                }
        }
 
+       if ((c = tb[IFACE_ATTR_DNS_SERVICE]))
+               iface->dns_service = blobmsg_get_bool(c);
+
        if ((c = tb[IFACE_ATTR_DOMAIN])) {
                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;
-
                        uint8_t buf[256];
                        char *domain = blobmsg_get_string(cur);
                        size_t domainlen = strlen(domain);
+                       int len;
+
+                       if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
+                               continue;
+
+                       domain = blobmsg_get_string(cur);
+                       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;
+                       len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
+                       if (len <= 0) {
+                               syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                                      iface_attrs[IFACE_ATTR_DOMAIN].name, iface->name);
+
+                               continue;
+                       }
 
                        iface->search = realloc(iface->search, iface->search_len + len);
                        if (!iface->search)
@@ -735,6 +761,17 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
        if ((c = tb[IFACE_ATTR_DHCPV6_NA]))
                iface->dhcpv6_na = blobmsg_get_bool(c);
 
+       if ((c = tb[IFACE_ATTR_DHCPV6_HOSTID_LEN])) {
+               uint32_t hostid_len = blobmsg_get_u32(c);
+
+               if (hostid_len >= HOSTID_LEN_MIN && hostid_len <= HOSTID_LEN_MAX)
+                       iface->dhcpv6_hostid_len = hostid_len;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                               iface_attrs[IFACE_ATTR_DHCPV6_HOSTID_LEN].name, iface->name);
+
+       }
+
        if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
                iface->default_router = blobmsg_get_u32(c);
 
@@ -760,40 +797,50 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
        if ((c = tb[IFACE_ATTR_RA_FLAGS])) {
                iface->ra_flags = 0;
+
                if (parse_ra_flags(&iface->ra_flags, c) < 0)
-                       goto err;
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_FLAGS].name, iface->name);
        }
 
        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 (ra_reachabletime <= 3600000)
+                       iface->ra_reachabletime = ra_reachabletime;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_REACHABLETIME].name, iface->name);
        }
 
        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 (ra_retranstime <= 60000)
+                       iface->ra_retranstime = ra_retranstime;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_RETRANSTIME].name, iface->name);
        }
 
        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 (ra_hoplimit <= 255)
+                       iface->ra_hoplimit = ra_hoplimit;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_HOPLIMIT].name, iface->name);
        }
 
        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 (ra_mtu >= 1280 || ra_mtu <= 65535)
+                       iface->ra_mtu = ra_mtu;
+               else
+                       syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_MTU].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_RA_SLAAC]))
@@ -830,7 +877,8 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
                        iface->route_preference = 0;
                else
-                       goto err;
+                       syslog(LOG_ERR, "Invalid %s mode configured for interface '%s'",
+                              iface_attrs[IFACE_ATTR_RA_PREFERENCE].name, iface->name);
        }
 
        if ((c = tb[IFACE_ATTR_PD_MANAGER]))
@@ -839,7 +887,8 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
        if ((c = tb[IFACE_ATTR_PD_CER]) &&
                        inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
-               goto err;
+               syslog(LOG_ERR, "Invalid %s value configured for interface '%s'",
+                      iface_attrs[IFACE_ATTR_PD_CER].name, iface->name);
 
        if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
                iface->learn_routes = blobmsg_get_bool(c);
@@ -1008,7 +1057,7 @@ struct lease *config_find_lease_by_mac(const uint8_t *mac)
        return NULL;
 }
 
-struct lease *config_find_lease_by_hostid(const uint32_t hostid)
+struct lease *config_find_lease_by_hostid(const uint64_t hostid)
 {
        struct lease *l;
 
@@ -1066,7 +1115,7 @@ void odhcpd_reload(void)
                uci_foreach_element(&dhcp->sections, e) {
                        struct uci_section* s = uci_to_section(e);
                        if (!strcmp(s->type, "host"))
-                               set_lease(s);
+                               set_lease_from_uci(s);
                }
        }