X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/fd82089835dee3b63874802976c6b2afc57a6b95..2f1b71cd7452cddfb456fd1a8df472893716a6d3:/cli.c diff --git a/cli.c b/cli.c index 0653794..527fec7 100644 --- a/cli.c +++ b/cli.c @@ -1,8 +1,8 @@ // L2TPNS Command Line Interface -// vim: sw=4 ts=8 +// vim: sw=8 ts=8 char const *cvs_name = "$Name: $"; -char const *cvs_id_cli = "$Id: cli.c,v 1.12 2004/08/26 04:38:40 fred_nerk Exp $"; +char const *cvs_id_cli = "$Id: cli.c,v 1.18 2004/10/28 03:31:11 bodea Exp $"; #include #include @@ -48,6 +48,7 @@ extern struct Tringbuffer *ringbuffer; #endif extern struct cli_session_actions *cli_session_actions; extern struct cli_tunnel_actions *cli_tunnel_actions; +extern tbft *filter_list; char *debug_levels[] = { "CRIT", @@ -101,6 +102,7 @@ int cmd_load_plugin(struct cli_def *cli, char *command, char **argv, int argc); int cmd_remove_plugin(struct cli_def *cli, char *command, char **argv, int argc); int cmd_uptime(struct cli_def *cli, char *command, char **argv, int argc); int regular_stuff(struct cli_def *cli); +void parsemac(char *string, char mac[6]); void init_cli(char *hostname) { @@ -113,9 +115,9 @@ void init_cli(char *hostname) cli = cli_init(); if (hostname && *hostname) - cli_set_hostname(cli, hostname); + cli_set_hostname(cli, hostname); else - cli_set_hostname(cli, "l2tpns"); + cli_set_hostname(cli, "l2tpns"); c = cli_register_command(cli, NULL, "show", NULL, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, NULL); cli_register_command(cli, c, "banana", cmd_show_banana, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, "Show a banana"); @@ -227,8 +229,8 @@ void init_cli(char *hostname) addr.sin_port = htons(23); if (bind(clifd, (void *) &addr, sizeof(addr)) < 0) { - log(0, 0, 0, 0, "Error listening on cli port 23: %s\n", strerror(errno)); - return; + log(0, 0, 0, 0, "Error listening on cli port 23: %s\n", strerror(errno)); + return; } listen(clifd, 10); } @@ -236,6 +238,9 @@ void init_cli(char *hostname) void cli_do(int sockfd) { int i; + int require_auth = 1; + struct sockaddr_in addr; + int l = sizeof(addr); if (fork()) return; if (config->scheduler_fifo) @@ -278,33 +283,28 @@ void cli_do(int sockfd) close(bgp_peers[i].sock); #endif /* BGP */ + if (getpeername(sockfd, (struct sockaddr *)&addr, &l) == 0) { - int require_auth = 1; - struct sockaddr_in addr; - int l = sizeof(addr); - if (getpeername(sockfd, (struct sockaddr *)&addr, &l) == 0) - { - log(3, 0, 0, 0, "Accepted connection to CLI from %s\n", inet_toa(addr.sin_addr.s_addr)); - require_auth = addr.sin_addr.s_addr != inet_addr("127.0.0.1"); - } - else - log(0, 0, 0, 0, "getpeername() failed on cli socket. Requiring authentication: %s\n", strerror(errno)); + log(3, 0, 0, 0, "Accepted connection to CLI from %s\n", inet_toa(addr.sin_addr.s_addr)); + require_auth = addr.sin_addr.s_addr != inet_addr("127.0.0.1"); + } + else + log(0, 0, 0, 0, "getpeername() failed on cli socket. Requiring authentication: %s\n", strerror(errno)); - if (require_auth) - { - log(3, 0, 0, 0, "CLI is remote, requiring authentication\n"); - if (!cli->users) /* paranoia */ - { - log(0, 0, 0, 0, "No users for remote authentication! Exiting CLI\n"); - exit(0); - } - } - else + if (require_auth) + { + log(3, 0, 0, 0, "CLI is remote, requiring authentication\n"); + if (!cli->users) /* paranoia */ { - /* no username/pass required */ - cli->users = 0; + log(0, 0, 0, 0, "No users for remote authentication! Exiting CLI\n"); + exit(0); } } + else + { + /* no username/pass required */ + cli->users = 0; + } debug_session = 0; debug_tunnel = 0; @@ -317,7 +317,7 @@ void cli_do(int sockfd) cli_loop(cli, sockfd); close(sockfd); - log(3, 0, 0, 0, "Closed CLI connection\n"); + log(3, 0, 0, 0, "Closed CLI connection from %s\n", inet_toa(addr.sin_addr.s_addr)); exit(0); } @@ -365,7 +365,7 @@ int cli_arg_help(struct cli_def *cli, int cr_ok, char *entry, ...) va_end(ap); if (cr_ok) - cli_print(cli, " "); + cli_print(cli, " "); return CLI_OK; } @@ -385,7 +385,7 @@ int cmd_show_session(struct cli_def *cli, char *command, char **argv, int argc) // Show individual session for (i = 0; i < argc; i++) { - unsigned int s; + unsigned int s, b_in, b_out; s = atoi(argv[i]); if (s <= 0 || s >= MAXSESSION) { @@ -393,29 +393,62 @@ int cmd_show_session(struct cli_def *cli, char *command, char **argv, int argc) continue; } cli_print(cli, "\r\nSession %d:", s); - cli_print(cli, " User: %s", session[s].user[0] ? session[s].user : "none"); - cli_print(cli, " Calling Num: %s", session[s].calling); - cli_print(cli, " Called Num: %s", session[s].called); - cli_print(cli, " Tunnel ID: %d", session[s].tunnel); - cli_print(cli, " IP address: %s", inet_toa(htonl(session[s].ip))); - cli_print(cli, " HSD sid: %lu", session[s].sid); - cli_print(cli, " Idle time: %u seconds", abs(time_now - session[s].last_packet)); - cli_print(cli, " Next Recv: %u", session[s].nr); - cli_print(cli, " Next Send: %u", session[s].ns); - cli_print(cli, " Bytes In/Out: %lu/%lu", (unsigned long)session[s].total_cout, (unsigned long)session[s].total_cin); - cli_print(cli, " Pkts In/Out: %lu/%lu", (unsigned long)session[s].pout, (unsigned long)session[s].pin); - cli_print(cli, " MRU: %d", session[s].mru); - cli_print(cli, " Radius Session: %u", session[s].radius); - cli_print(cli, " Rx Speed: %lu", session[s].rx_connect_speed); - cli_print(cli, " Tx Speed: %lu", session[s].tx_connect_speed); + cli_print(cli, " User: %s", session[s].user[0] ? session[s].user : "none"); + cli_print(cli, " Calling Num: %s", session[s].calling); + cli_print(cli, " Called Num: %s", session[s].called); + cli_print(cli, " Tunnel ID: %d", session[s].tunnel); + cli_print(cli, " IP address: %s", inet_toa(htonl(session[s].ip))); + cli_print(cli, " Unique SID: %lu", session[s].unique_id); + cli_print(cli, " Idle time: %u seconds", abs(time_now - session[s].last_packet)); + cli_print(cli, " Next Recv: %u", session[s].nr); + cli_print(cli, " Next Send: %u", session[s].ns); + cli_print(cli, " Bytes In/Out: %lu/%lu", (unsigned long)session[s].total_cout, (unsigned long)session[s].total_cin); + cli_print(cli, " Pkts In/Out: %lu/%lu", (unsigned long)session[s].pout, (unsigned long)session[s].pin); + cli_print(cli, " MRU: %d", session[s].mru); + cli_print(cli, " Radius Session: %u", session[s].radius); + cli_print(cli, " Rx Speed: %lu", session[s].rx_connect_speed); + cli_print(cli, " Tx Speed: %lu", session[s].tx_connect_speed); if (session[s].snoop_ip && session[s].snoop_port) - cli_print(cli, " Intercepted: %s:%d", inet_toa(session[s].snoop_ip), session[s] .snoop_port); + cli_print(cli, " Intercepted: %s:%d", inet_toa(session[s].snoop_ip), session[s] .snoop_port); else - cli_print(cli, " Intercepted: no"); - cli_print(cli, " Throttled: %s", session[s].throttle ? "YES" : "no"); - cli_print(cli, " Walled Garden: %s", session[s].walled_garden ? "YES" : "no"); - cli_print(cli, " Filter BucketI: %d", session[s].tbf_in); - cli_print(cli, " Filter BucketO: %d", session[s].tbf_out); + cli_print(cli, " Intercepted: no"); + cli_print(cli, " Throttled: %s", session[s].throttle ? "YES" : "no"); + cli_print(cli, " Walled Garden: %s", session[s].walled_garden ? "YES" : "no"); + b_in = session[s].tbf_in; + b_out = session[s].tbf_out; + if (b_in || b_out) + cli_print(cli, " %5s %6s %6s | %7s %7s %8s %8s %8s %8s", + "Rate", "Credit", "Queued", "ByteIn", "PackIn", + "ByteSent", "PackSent", "PackDrop", "PackDelay"); + + if (b_in) + cli_print(cli, " TBFI#%d%1s %5d %6d %6d | %7d %7d %8d %8d %8d %8d", + b_in, + (filter_list[b_in].next ? "*" : " "), + filter_list[b_in].rate * 8, + filter_list[b_in].credit, + filter_list[b_in].queued, + filter_list[b_in].b_queued, + filter_list[b_in].p_queued, + filter_list[b_in].b_sent, + filter_list[b_in].p_sent, + filter_list[b_in].p_dropped, + filter_list[b_in].p_delayed); + + if (b_out) + cli_print(cli, " TBFO#%d%1s %5d %6d %6d | %7d %7d %8d %8d %8d %8d", + b_out, + (filter_list[b_out].next ? "*" : " "), + filter_list[b_out].rate * 8, + filter_list[b_out].credit, + filter_list[b_out].queued, + filter_list[b_out].b_queued, + filter_list[b_out].p_queued, + filter_list[b_out].b_sent, + filter_list[b_out].p_sent, + filter_list[b_out].p_dropped, + filter_list[b_out].p_delayed); + } return CLI_OK; } @@ -435,6 +468,7 @@ int cmd_show_session(struct cli_def *cli, char *command, char **argv, int argc) "idle", "LAC", "CLI"); + for (i = 1; i < MAXSESSION; i++) { char *userip, *tunnelip; @@ -505,20 +539,21 @@ int cmd_show_tunnels(struct cli_def *cli, char *command, char **argv, int argc) continue; } cli_print(cli, "\r\nTunnel %d:", t); - cli_print(cli, " State: %s", states[tunnel[t].state]); - cli_print(cli, " Hostname: %s", tunnel[t].hostname[0] ? tunnel[t].hostname : "(none)"); - cli_print(cli, " Remote IP: %s", inet_toa(htonl(tunnel[t].ip))); - cli_print(cli, " Remote Port: %d", tunnel[t].port); - cli_print(cli, " Rx Window: %u", tunnel[t].window); - cli_print(cli, " Next Recv: %u", tunnel[t].nr); - cli_print(cli, " Next Send: %u", tunnel[t].ns); - cli_print(cli, " Queue Len: %u", tunnel[t].controlc); - cli_print(cli, " Last Packet Age:%u", (unsigned)(time_now - tunnel[t].last)); + cli_print(cli, " State: %s", states[tunnel[t].state]); + cli_print(cli, " Hostname: %s", tunnel[t].hostname[0] ? tunnel[t].hostname : "(none)"); + cli_print(cli, " Remote IP: %s", inet_toa(htonl(tunnel[t].ip))); + cli_print(cli, " Remote Port: %d", tunnel[t].port); + cli_print(cli, " Rx Window: %u", tunnel[t].window); + cli_print(cli, " Next Recv: %u", tunnel[t].nr); + cli_print(cli, " Next Send: %u", tunnel[t].ns); + cli_print(cli, " Queue Len: %u", tunnel[t].controlc); + cli_print(cli, " Last Packet Age:%u", (unsigned)(time_now - tunnel[t].last)); for (x = 0; x < MAXSESSION; x++) - if (session[x].tunnel == t && session[x].opened && !session[x].die) - sprintf(s, "%s%u ", s, x); - cli_print(cli, " Sessions: %s", s); + if (session[x].tunnel == t && session[x].opened && !session[x].die) + sprintf(s, "%s%u ", s, x); + + cli_print(cli, " Sessions: %s", s); } return CLI_OK; } @@ -847,6 +882,14 @@ int cmd_show_run(struct cli_def *cli, char *command, char **argv, int argc) cli_print(cli, "set %s %d", config_values[i].key, *(int *)value); else if (config_values[i].type == UNSIGNED_LONG) cli_print(cli, "set %s %lu", config_values[i].key, *(unsigned long *)value); + else if (config_values[i].type == MAC) + cli_print(cli, "set %s %02x%02x.%02x%02x.%02x%02x", config_values[i].key, + *(unsigned short *)(value + 0), + *(unsigned short *)(value + 1), + *(unsigned short *)(value + 2), + *(unsigned short *)(value + 3), + *(unsigned short *)(value + 4), + *(unsigned short *)(value + 5)); } cli_print(cli, "# Plugins"); @@ -961,20 +1004,20 @@ int cmd_show_banana(struct cli_def *cli, char *command, char **argv, int argc) if (CLI_HELP_REQUESTED) return CLI_HELP_NO_ARGS; - cli_print(cli, " _\n" - "//\\\n" - "V \\\n" - " \\ \\_\n" - " \\,'.`-.\n" - " |\\ `. `.\n" - " ( \\ `. `-. _,.-:\\\n" - " \\ \\ `. `-._ __..--' ,-';/\n" - " \\ `. `-. `-..___..---' _.--' ,'/\n" - " `. `. `-._ __..--' ,' /\n" - " `. `-_ ``--..'' _.-' ,'\n" - " `-_ `-.___ __,--' ,'\n" - " `-.__ `----\"\"\" __.-'\n" - "hh `--..____..--'"); + cli_print(cli, " _\n" + "//\\\n" + "V \\\n" + " \\ \\_\n" + " \\,'.`-.\n" + " |\\ `. `.\n" + " ( \\ `. `-. _,.-:\\\n" + " \\ \\ `. `-._ __..--' ,-';/\n" + " \\ `. `-. `-..___..---' _.--' ,'/\n" + " `. `. `-._ __..--' ,' /\n" + " `. `-_ ``--..'' _.-' ,'\n" + " `-_ `-.___ __,--' ,'\n" + " `-.__ `----\"\"\" __.-'\n" + "hh `--..____..--'"); return CLI_OK; } @@ -1227,12 +1270,27 @@ int cmd_no_snoop(struct cli_def *cli, char *command, char **argv, int argc) int cmd_throttle(struct cli_def *cli, char *command, char **argv, int argc) { - int i; + int rate_in = 0; + int rate_out = 0; sessionidt s; if (CLI_HELP_REQUESTED) - return cli_arg_help(cli, argc > 1, - "USER", "Username of session to throttle", NULL); + { + switch (argc) + { + case 1: + return cli_arg_help(cli, 0, "user", "Username of session to throttle", NULL); + + case 2: + return cli_arg_help(cli, 1, "rate", "Incoming rate in kb/s", NULL); + + case 3: + return cli_arg_help(cli, 1, "rate", "Outgoing rate in kb/s", NULL); + + default: + return cli_arg_help(cli, argc > 1, "user", "Username of session to throttle", NULL); + } + } if (!config->cluster_iam_master) { @@ -1240,31 +1298,32 @@ int cmd_throttle(struct cli_def *cli, char *command, char **argv, int argc) return CLI_OK; } - if (!argc) + if (argc == 0) { - cli_print(cli, "Specify a user"); + cli_print(cli, "You must specify at least a username"); return CLI_OK; } - for (i = 0; i < argc; i++) - { - if (!(s = sessionbyuser(argv[i]))) - { - cli_print(cli, "User %s is not connected", argv[i]); - continue; - } + rate_in = rate_out = config->rl_rate; + if (argc >= 2) rate_in = atoi(argv[1]); + if (argc >= 3) rate_out = atoi(argv[2]); - if (session[s].throttle) - { - cli_print(cli, "User %s already throttled", argv[i]); - continue; - } + if (!(s = sessionbyuser(argv[0]))) + { + cli_print(cli, "User %s is not connected", argv[0]); + return CLI_OK; + } - cli_print(cli, "Throttling user %s", argv[i]); - cli_session_actions[s].throttle = config->rl_rate; // could be configurable at some stage - cli_session_actions[s].action |= CLI_SESS_THROTTLE; + if (session[s].throttle) + { + cli_print(cli, "User %s already throttled, unthrottle first", argv[0]); + return CLI_OK; } + cli_print(cli, "Throttling user %s", argv[0]); + cli_session_actions[s].throttle = rate_in << 16 | rate_out; + cli_session_actions[s].action |= CLI_SESS_THROTTLE; + return CLI_OK; } @@ -1316,13 +1375,13 @@ int cmd_debug(struct cli_def *cli, char *command, char **argv, int argc) if (CLI_HELP_REQUESTED) return cli_arg_help(cli, 1, - "all", "Enable debugging for all except \"data\"", - "critical", "", // FIXME: add descriptions + "all", "Enable debugging for all except \"data\"", + "critical", "", // FIXME: add descriptions "error", "", - "warning", "", - "info", "", + "warning", "", + "info", "", "calls", "", - "data", "", + "data", "", NULL); if (!argc) @@ -1334,11 +1393,11 @@ int cmd_debug(struct cli_def *cli, char *command, char **argv, int argc) { cli_print(cli, "Currently debugging:%s%s%s%s%s%s", (debug_flags.critical) ? " critical" : "", - (debug_flags.error) ? " error" : "", + (debug_flags.error) ? " error" : "", (debug_flags.warning) ? " warning" : "", - (debug_flags.info) ? " info" : "", - (debug_flags.calls) ? " calls" : "", - (debug_flags.data) ? " data" : ""); + (debug_flags.info) ? " info" : "", + (debug_flags.calls) ? " calls" : "", + (debug_flags.data) ? " data" : ""); return CLI_OK; } @@ -1356,12 +1415,12 @@ int cmd_debug(struct cli_def *cli, char *command, char **argv, int argc) len = 2; /* distinguish [cr]itical from [ca]lls */ if (!strncasecmp(argv[i], "critical", len)) { debug_flags.critical = 1; continue; } - if (!strncasecmp(argv[i], "error", len)) { debug_flags.error = 1; continue; } + if (!strncasecmp(argv[i], "error", len)) { debug_flags.error = 1; continue; } if (!strncasecmp(argv[i], "warning", len)) { debug_flags.warning = 1; continue; } - if (!strncasecmp(argv[i], "info", len)) { debug_flags.info = 1; continue; } - if (!strncasecmp(argv[i], "calls", len)) { debug_flags.calls = 1; continue; } - if (!strncasecmp(argv[i], "data", len)) { debug_flags.data = 1; continue; } - if (!strncasecmp(argv[i], "all", len)) + if (!strncasecmp(argv[i], "info", len)) { debug_flags.info = 1; continue; } + if (!strncasecmp(argv[i], "calls", len)) { debug_flags.calls = 1; continue; } + if (!strncasecmp(argv[i], "data", len)) { debug_flags.data = 1; continue; } + if (!strncasecmp(argv[i], "all", len)) { memset(&debug_flags, 1, sizeof(debug_flags)); debug_flags.data = 0; @@ -1380,18 +1439,18 @@ int cmd_no_debug(struct cli_def *cli, char *command, char **argv, int argc) if (CLI_HELP_REQUESTED) return cli_arg_help(cli, 1, - "all", "Disable all debugging", - "critical", "", // FIXME: add descriptions + "all", "Disable all debugging", + "critical", "", // FIXME: add descriptions "error", "", - "warning", "", - "info", "", + "warning", "", + "info", "", "calls", "", - "data", "", + "data", "", NULL); if (!argc) { - memset(&debug_flags, 0, sizeof(debug_flags)); + memset(&debug_flags, 0, sizeof(debug_flags)); return CLI_OK; } @@ -1403,12 +1462,12 @@ int cmd_no_debug(struct cli_def *cli, char *command, char **argv, int argc) len = 2; /* distinguish [cr]itical from [ca]lls */ if (!strncasecmp(argv[i], "critical", len)) { debug_flags.critical = 0; continue; } - if (!strncasecmp(argv[i], "error", len)) { debug_flags.error = 0; continue; } + if (!strncasecmp(argv[i], "error", len)) { debug_flags.error = 0; continue; } if (!strncasecmp(argv[i], "warning", len)) { debug_flags.warning = 0; continue; } - if (!strncasecmp(argv[i], "info", len)) { debug_flags.info = 0; continue; } - if (!strncasecmp(argv[i], "calls", len)) { debug_flags.calls = 0; continue; } - if (!strncasecmp(argv[i], "data", len)) { debug_flags.data = 0; continue; } - if (!strncasecmp(argv[i], "all", len)) + if (!strncasecmp(argv[i], "info", len)) { debug_flags.info = 0; continue; } + if (!strncasecmp(argv[i], "calls", len)) { debug_flags.calls = 0; continue; } + if (!strncasecmp(argv[i], "data", len)) { debug_flags.data = 0; continue; } + if (!strncasecmp(argv[i], "all", len)) { memset(&debug_flags, 0, sizeof(debug_flags)); continue; @@ -1576,7 +1635,7 @@ int cmd_set(struct cli_def *cli, char *command, char **argv, int argc) case 3: if (!argv[2][1]) - return cli_arg_help(cli, 1, NULL); + return cli_arg_help(cli, 1, NULL); default: return CLI_OK; @@ -1598,30 +1657,33 @@ int cmd_set(struct cli_def *cli, char *command, char **argv, int argc) cli_print(cli, "Setting \"%s\" to \"%s\"", argv[0], argv[1]); switch (config_values[i].type) { - case STRING: - strncpy((char *)value, argv[1], config_values[i].size - 1); - break; - case INT: - *(int *)value = atoi(argv[1]); - break; - case UNSIGNED_LONG: - *(unsigned long *)value = atol(argv[1]); - break; - case SHORT: - *(short *)value = atoi(argv[1]); - break; - case IP: - *(unsigned *)value = inet_addr(argv[1]); - break; - case BOOL: - if (strcasecmp(argv[1], "yes") == 0 || strcasecmp(argv[1], "true") == 0 || strcasecmp(argv[1], "1") == 0) - *(int *)value = 1; - else - *(int *)value = 0; - break; - default: - cli_print(cli, "Unknown variable type"); - break; + case STRING: + strncpy((char *)value, argv[1], config_values[i].size - 1); + break; + case INT: + *(int *)value = atoi(argv[1]); + break; + case UNSIGNED_LONG: + *(unsigned long *)value = atol(argv[1]); + break; + case SHORT: + *(short *)value = atoi(argv[1]); + break; + case IP: + *(unsigned *)value = inet_addr(argv[1]); + break; + case MAC: + parsemac(argv[1], (char *)value); + break; + case BOOL: + if (strcasecmp(argv[1], "yes") == 0 || strcasecmp(argv[1], "true") == 0 || strcasecmp(argv[1], "1") == 0) + *(int *)value = 1; + else + *(int *)value = 0; + break; + default: + cli_print(cli, "Unknown variable type"); + break; } config->reload_config = 1; return CLI_OK; @@ -1646,11 +1708,11 @@ int regular_stuff(struct cli_def *cli) { // Always show messages if we are doing general debug if (ringbuffer->buffer[i].level == 0 && debug_flags.critical) show_message = 1; - if (ringbuffer->buffer[i].level == 1 && debug_flags.error) show_message = 1; - if (ringbuffer->buffer[i].level == 2 && debug_flags.warning) show_message = 1; - if (ringbuffer->buffer[i].level == 3 && debug_flags.info) show_message = 1; - if (ringbuffer->buffer[i].level == 4 && debug_flags.calls) show_message = 1; - if (ringbuffer->buffer[i].level == 5 && debug_flags.data) show_message = 1; + if (ringbuffer->buffer[i].level == 1 && debug_flags.error) show_message = 1; + if (ringbuffer->buffer[i].level == 2 && debug_flags.warning) show_message = 1; + if (ringbuffer->buffer[i].level == 3 && debug_flags.info) show_message = 1; + if (ringbuffer->buffer[i].level == 4 && debug_flags.calls) show_message = 1; + if (ringbuffer->buffer[i].level == 5 && debug_flags.data) show_message = 1; } if (show_message) @@ -1682,3 +1744,13 @@ int regular_stuff(struct cli_def *cli) #endif return CLI_OK; } + +// Convert a string in the form of abcd.ef12.3456 into char[6] +void parsemac(char *string, char mac[6]) +{ + if (sscanf(string, "%02x%02x.%02x%02x.%02x%02x", (unsigned int *)&mac[0], (unsigned int *)&mac[1], (unsigned int *)&mac[2], (unsigned int *)&mac[3], (unsigned int *)&mac[4], (unsigned int *)&mac[5]) == 6) + return; + if (sscanf(string, "%02x%02x:%02x%02x:%02x%02x", (unsigned int *)&mac[0], (unsigned int *)&mac[1], (unsigned int *)&mac[2], (unsigned int *)&mac[3], (unsigned int *)&mac[4], (unsigned int *)&mac[5]) == 6) + return; + memset(mac, 0, 6); +}