diff options
| -rw-r--r-- | src/connman.h | 1 | ||||
| -rw-r--r-- | src/inet.c | 78 |
2 files changed, 79 insertions, 0 deletions
diff --git a/src/connman.h b/src/connman.h index 5ab9eb5e..6726078b 100644 --- a/src/connman.h +++ b/src/connman.h @@ -133,6 +133,7 @@ void __connman_task_cleanup(void); #include <connman/inet.h> +char **__connman_inet_get_running_interfaces(void); int __connman_inet_modify_address(int cmd, int flags, int index, int family, const char *address, const char *peer, @@ -2238,3 +2238,81 @@ connman_bool_t connman_inet_check_hostname(const char *ptr, size_t len) return TRUE; } + +char **__connman_inet_get_running_interfaces(void) +{ + char **result; + struct ifconf ifc; + struct ifreq *ifr = NULL; + int sk, i, numif, count = 0; + + memset(&ifc, 0, sizeof(ifc)); + + sk = socket(AF_INET, SOCK_DGRAM, 0); + if (sk < 0) + return NULL; + + if (ioctl(sk, SIOCGIFCONF, &ifc) < 0) + goto error; + + /* + * Allocate some extra bytes just in case there will + * be new interfaces added between two SIOCGIFCONF + * calls. + */ + ifr = g_try_malloc0(ifc.ifc_len * 2); + if (ifr == NULL) + goto error; + + ifc.ifc_req = ifr; + + if (ioctl(sk, SIOCGIFCONF, &ifc) < 0) + goto error; + + numif = ifc.ifc_len / sizeof(struct ifreq); + + result = g_try_malloc0((numif + 1) * sizeof(char *)); + if (result == NULL) + goto error; + + close(sk); + + for (i = 0; i < numif; i++) { + struct ifreq *r = &ifr[i]; + struct in6_addr *addr6; + in_addr_t addr4; + + /* + * Note that we do not return loopback interfaces here as they + * are not needed for our purposes. + */ + switch (r->ifr_addr.sa_family) { + case AF_INET: + addr4 = ntohl(((struct sockaddr_in *) + &r->ifr_addr)->sin_addr.s_addr); + if (((addr4 & 0xff000000) >> 24) == 127) + continue; + break; + case AF_INET6: + addr6 = &((struct sockaddr_in6 *) + &r->ifr_addr)->sin6_addr; + if (IN6_IS_ADDR_LINKLOCAL(addr6)) + continue; + break; + } + + result[count++] = g_strdup(r->ifr_name); + } + + free(ifr); + + if (count < numif) + result = g_try_realloc(result, (count + 1) * sizeof(char *)); + + return result; + +error: + close(sk); + free(ifr); + return NULL; +} |