ndp: keep an exact copy of IPv6 interface addresses

[project/odhcpd.git] / src / config.c

diff --git a/src/config.c b/src/config.c
index daf583b..943f243 100644 (file)
--- a/src/config.c
+++ b/src/config.c
@@ -6,6 +6,7 @@
 #include <libgen.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <syslog.h>
 
 #include <uci.h>
 #include <uci_blob.h>
@@ -16,7 +17,8 @@ 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, .dhcp_cb = NULL,
+                       .dhcp_statefile = NULL, .log_level = LOG_INFO};
 
 enum {
        IFACE_ATTR_INTERFACE,
@@ -43,7 +45,10 @@ enum {
        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_PD_MANAGER,
        IFACE_ATTR_PD_CER,
        IFACE_ATTR_NDPROXY_ROUTING,
@@ -78,7 +83,10 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [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_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
 };
@@ -123,6 +131,7 @@ enum {
        ODHCPD_ATTR_MAINDHCP,
        ODHCPD_ATTR_LEASEFILE,
        ODHCPD_ATTR_LEASETRIGGER,
+       ODHCPD_ATTR_LOGLEVEL,
        ODHCPD_ATTR_MAX
 };
 
@@ -130,6 +139,7 @@ static const struct blobmsg_policy odhcpd_attrs[LEASE_ATTR_MAX] = {
        [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 = {
@@ -162,6 +172,15 @@ static int mkdir_p(char *dir, mode_t 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)
 {
        struct interface *c;
@@ -171,6 +190,16 @@ static struct interface* get_interface(const char *name)
        return NULL;
 }
 
+static void set_interface_defaults(struct interface *iface)
+{
+       iface->managed = 1;
+       iface->learn_routes = 1;
+       iface->dhcpv4_leasetime = 43200;
+       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);
@@ -181,6 +210,7 @@ static void clean_interface(struct interface *iface)
        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)
@@ -231,6 +261,15 @@ 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) {
@@ -252,10 +291,10 @@ static double parse_leasetime(struct blob_attr *c) {
                        goto err;
        }
 
-       if (time >= 60)
-               return time;
+       if (time < 60)
+               time = 60;
 
-       return 0;
+       return time;
 
 err:
        return -1;
@@ -315,18 +354,16 @@ static int set_lease(struct uci_section *s)
                if (time < 0)
                        goto err;
 
-               if (time >= 60)
-                       lease->dhcpv4_leasetime = time;
+               lease->dhcpv4_leasetime = time;
        }
 
        list_add(&lease->head, &leases);
        return 0;
 
 err:
-       if (lease) {
-               free(lease->duid);
-               free(lease);
-       }
+       if (lease)
+               free_lease(lease);
+
        return -1;
 }
 
@@ -349,9 +386,7 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 
                strncpy(iface->name, name, sizeof(iface->name) - 1);
 
-               /* Default settings */
-               iface->managed = 1;
-               iface->learn_routes = true;
+               set_interface_defaults(iface);
 
                list_add(&iface->head, &interfaces);
                overwrite = true;
@@ -392,8 +427,7 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                if (time < 0)
                        goto err;
 
-               if (time >= 60)
-                       iface->dhcpv4_leasetime = time;
+               iface->dhcpv4_leasetime = time;
        }
 
        if ((c = tb[IFACE_ATTR_START])) {
@@ -558,9 +592,18 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
        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);
 
@@ -607,12 +650,8 @@ void odhcpd_reload(void)
 {
        struct uci_context *uci = uci_alloc_context();
 
-       while (!list_empty(&leases)) {
-               struct lease *l = list_first_entry(&leases, struct lease, 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;
 
@@ -717,15 +756,15 @@ void odhcpd_reload(void)
                                i->ndp = (master && master->ndp == RELAYD_RELAY) ?
                                                RELAYD_RELAY : RELAYD_DISABLED;
 
-                       setup_router_interface(i, true);
-                       setup_dhcpv6_interface(i, true);
-                       setup_ndp_interface(i, true);
-                       setup_dhcpv4_interface(i, true);
-               } else {
+                       setup_router_interface(i, !i->ignore || i->ra != RELAYD_DISABLED);
+                       setup_dhcpv6_interface(i, !i->ignore || i->dhcpv6 != RELAYD_DISABLED);
+                       setup_ndp_interface(i, !i->ignore || i->ndp != RELAYD_DISABLED);
+                       setup_dhcpv4_interface(i, !i->ignore || i->dhcpv4 != RELAYD_DISABLED);
+               } else
                        close_interface(i);
-               }
        }
 
+       ndp_handle_addr6_dump();
        uci_unload(uci, dhcp);
        uci_free_context(uci);
 }