shell: add ng_ipv6 support for ifconfig

sys/shell/commands/sc_netif.c

@@ -24,6 +24,8 @@
 #include <string.h>
 
 #include "thread.h"
+#include "net/ng_ipv6/addr.h"
+#include "net/ng_ipv6/netif.h"
 #include "net/ng_netif.h"
 #include "net/ng_netapi.h"
 #include "net/ng_netconf.h"
@@ -82,7 +84,19 @@ static void _set_usage(char *cmd_name)
 
 static void _flag_usage(char *cmd_name)
 {
-    printf("usage: %s <if_id> [-]{promisc|autoack|preload}", cmd_name);
+    printf("usage: %s <if_id> [-]{promisc|autoack|preload}\n", cmd_name);
+}
+
+static void _add_usage(char *cmd_name)
+{
+    printf("usage: %s <if_id> add [anycast|multicast|unicast] "
+           "<ipv6_addr>[/prefix_len]\n", cmd_name);
+}
+
+static void _del_usage(char *cmd_name)
+{
+    printf("usage: %s <if_id> del <ipv6_addr>\n",
+           cmd_name);
 }
 
 static void _print_netconf(ng_netconf_opt_t opt)
@@ -154,6 +168,11 @@ static void _netif_list(kernel_pid_t dev)
     ng_netconf_state_t state;
     ng_netconf_enable_t enable;
     bool linebreak = false;
+#ifdef MODULE_NG_IPV6_NETIF
+    ng_ipv6_netif_t *entry = ng_ipv6_netif_get(dev);
+    char ipv6_addr[NG_IPV6_ADDR_MAX_STR_LEN];
+#endif
+
 
     printf("Iface %2d  ", dev);
 
@@ -226,8 +245,6 @@ static void _netif_list(kernel_pid_t dev)
     }
 
 #ifdef MODULE_NG_IPV6_NETIF
-    ng_ipv6_netif_t *entry = ng_ipv6_netif_get(dev);
-
     if ((entry != NULL) && (entry->flags & NG_IPV6_NETIF_FLAGS_SIXLOWPAN)) {
         printf("6LO ");
         linebreak = true;
@@ -244,7 +261,40 @@ static void _netif_list(kernel_pid_t dev)
         printf("Source address length: %" PRIu16 "\n            ", u16);
     }
 
-    /* TODO: list IPv6 info */
+#ifdef MODULE_NG_IPV6_NETIF
+    for (int i = 0; i < NG_IPV6_NETIF_ADDR_NUMOF; i++) {
+        if (!ng_ipv6_addr_is_unspecified(&entry->addrs[i].addr)) {
+            printf("inet6 addr: ");
+
+            if (ng_ipv6_addr_to_str(ipv6_addr, &entry->addrs[i].addr,
+                                    NG_IPV6_ADDR_MAX_STR_LEN)) {
+                printf("%s/%" PRIu8 "  scope: ", ipv6_addr,
+                       entry->addrs[i].prefix_len);
+
+                if ((ng_ipv6_addr_is_link_local(&entry->addrs[i].addr))) {
+                    printf("local");
+                }
+                else {
+                    printf("global");
+                }
+
+                if (entry->addrs[i].flags & NG_IPV6_NETIF_ADDR_FLAGS_NON_UNICAST) {
+                    if (ng_ipv6_addr_is_multicast(&entry->addrs[i].addr)) {
+                        printf(" [multicast]");
+                    }
+                    else {
+                        printf(" [anycast]");
+                    }
+                }
+            }
+            else {
+                printf("error in conversion");
+            }
+
+            printf("\n           ");
+        }
+    }
+#endif
 
     puts("");
 }
@@ -475,6 +525,115 @@ static int _netif_flag(char *cmd, kernel_pid_t dev, char *flag)
     return 1;
 }
 
+#ifdef MODULE_NG_IPV6_NETIF
+static uint8_t _get_prefix_len(char *addr)
+{
+    int prefix_len = 128;
+
+    while ((*addr != '/') && (*addr != '\0')) {
+        addr++;
+    }
+
+    if (*addr == '/') {
+        *addr = '\0';
+        prefix_len = atoi(addr + 1);
+
+        if ((prefix_len < 1) || (prefix_len > 128)) {
+            prefix_len = 128;
+        }
+    }
+
+    return prefix_len;
+}
+#endif
+
+static int _netif_add(char *cmd_name, kernel_pid_t dev, int argc, char **argv)
+{
+#ifdef MODULE_NG_IPV6_NETIF
+    enum {
+        _UNICAST = 0,
+        _MULTICAST,     /* multicast value just to check if given addr is mc */
+        _ANYCAST
+    } type = _UNICAST;
+    char *addr_str = argv[0];
+    ng_ipv6_addr_t addr;
+    uint8_t prefix_len;
+
+    if (argc > 1) {
+        if (strcmp(argv[0], "anycast") == 0) {
+            type = _ANYCAST;
+            addr_str = argv[1];
+        }
+        else if (strcmp(argv[0], "multicast") == 0) {
+            type = _MULTICAST;
+            addr_str = argv[1];
+        }
+        else if (strcmp(argv[0], "unicast") == 0) {
+            /* type already set to unicast */
+            addr_str = argv[1];
+        }
+        else {
+            _add_usage(cmd_name);
+            return 1;
+        }
+    }
+
+    prefix_len = _get_prefix_len(addr_str);
+
+    if (ng_ipv6_addr_from_str(&addr, addr_str) == NULL) {
+        puts("error: unable to parse IPv6 address.");
+        return 1;
+    }
+
+    if ((argc > 1) && (ng_ipv6_addr_is_multicast(&addr)) && (type != _MULTICAST)) {
+        puts("error: address was not a multicast address.");
+        return 1;
+    }
+
+    if (ng_ipv6_netif_add_addr(dev, &addr, prefix_len, (type == _ANYCAST)) < 0) {
+        printf("error: unable to add IPv6 address\n");
+        return 1;
+    }
+
+    printf("success: added %s/%d to interface %" PRIkernel_pid "\n", addr_str,
+           prefix_len, dev);
+
+    return 0;
+#else
+    (void)cmd_name;
+    (void)dev;
+    (void)argc;
+    (void)argv;
+    puts("error: unable to add IPv6 address.");
+
+    return 1;
+#endif
+}
+
+static int _netif_del(kernel_pid_t dev, char *addr_str)
+{
+#ifdef MODULE_NG_IPV6_NETIF
+    ng_ipv6_addr_t addr;
+
+    if (ng_ipv6_addr_from_str(&addr, addr_str) == NULL) {
+        puts("error: unable to parse IPv6 address.");
+        return 1;
+    }
+
+    ng_ipv6_netif_remove_addr(dev, &addr);
+
+    printf("success: removed %s to interface %" PRIkernel_pid "\n", addr_str,
+           dev);
+
+    return 0;
+#else
+    (void)dev;
+    (void)addr_str;
+    puts("error: unable to delete IPv6 address.");
+    return 1;
+#endif
+}
+
 /* shell commands */
 int _netif_send(int argc, char **argv)
 {
@@ -553,9 +712,22 @@ int _netif_config(int argc, char **argv)
 
                 return _netif_set(argv[0], dev, argv[3], argv[4]);
             }
+            else if (strcmp(argv[2], "add") == 0) {
+                if (argc < 4) {
+                    _add_usage(argv[0]);
+                    return 1;
+                }
 
-            /* TODO implement add for IP addresses */
+                return _netif_add(argv[0], (kernel_pid_t)dev, argc - 3, argv + 3);
+            }
+            else if (strcmp(argv[2], "del") == 0) {
+                if (argc < 4) {
+                    _del_usage(argv[0]);
+                    return 1;
+                }
 
+                return _netif_del((kernel_pid_t)dev, argv[3]);
+            }
             else {
                 return _netif_flag(argv[0], dev, argv[2]);
             }
@@ -566,8 +738,10 @@ int _netif_config(int argc, char **argv)
         }
     }
 
-    printf("usage: %s <if_id>\n", argv[0]);
+    printf("usage: %s [<if_id>]\n", argv[0]);
     _set_usage(argv[0]);
     _flag_usage(argv[0]);
+    _add_usage(argv[0]);
+    _del_usage(argv[0]);
     return 1;
 }