diff options
Diffstat (limited to 'clatd.c')
| -rw-r--r-- | clatd.c | 17 |
1 files changed, 11 insertions, 6 deletions
@@ -51,7 +51,7 @@ #include "getaddr.h" #include "dump.h" -#define DEVICENAME4 "clat4" +#define DEVICEPREFIX "v4-" /* 40 bytes IPv6 header - 20 bytes IPv4 header + 8 bytes fragment header */ #define MTU_DELTA 28 @@ -156,11 +156,11 @@ int configure_packet_socket(int sock) { */ void interface_poll(const struct tun_data *tunnel) { union anyip *interface_ip; + char *interface = Global_Clatd_Config.default_pdp_interface; - interface_ip = getinterface_ip(Global_Clatd_Config.default_pdp_interface, AF_INET6); + interface_ip = getinterface_ip(interface, AF_INET6); if(!interface_ip) { - logmsg(ANDROID_LOG_WARN,"unable to find an ipv6 ip on interface %s", - Global_Clatd_Config.default_pdp_interface); + logmsg(ANDROID_LOG_WARN,"unable to find an ipv6 ip on interface %s", interface); return; } @@ -441,8 +441,7 @@ int main(int argc, char **argv) { char *uplink_interface = NULL, *plat_prefix = NULL, *net_id_str = NULL, *mark_str = NULL; unsigned net_id = NETID_UNSET; uint32_t mark = MARK_UNSET; - - strcpy(tunnel.device4, DEVICENAME4); + unsigned len; while((opt = getopt(argc, argv, "i:p:n:m:h")) != -1) { switch(opt) { @@ -482,6 +481,12 @@ int main(int argc, char **argv) { exit(1); } + len = snprintf(tunnel.device4, sizeof(tunnel.device4), "%s%s", DEVICEPREFIX, uplink_interface); + if (len >= sizeof(tunnel.device4)) { + logmsg(ANDROID_LOG_FATAL, "interface name too long '%s'", tunnel.device4); + exit(1); + } + logmsg(ANDROID_LOG_INFO, "Starting clat version %s on %s netid=%s mark=%s", CLATD_VERSION, uplink_interface, net_id_str ? net_id_str : "(none)", |