/** Initialises the server logging functionality, and the underlying libfreeradius log
*
* @note Call log free when the server is done to fix any spurious memory leaks.
*
* @param[in] log Logging parameters.
* @param[in] daemonize Changes what we do with stdout/stderr.
* @return
* - 0 on success.
* - -1 on failure.
*/
int log_global_init(fr_log_t *log, bool daemonize)
{
int ret;
ret = fr_log_init(log, daemonize);
if (ret < 0) return ret;
if (fr_dict_autoload(log_dict) < 0) {
fr_perror("log_init");
return -1;
}
if (fr_dict_attr_autoload(log_dict_attr) < 0) {
fr_perror("log_init");
return -1;
}
return ret;
}
/** Add built in pair comparisons
*
*/
int paircmp_init(void)
{
if (fr_dict_autoload(paircmp_dict) < 0) return -1;
if (fr_dict_attr_autoload(paircmp_dict_attr) < 0) return -1;
paircmp_register(attr_prefix, attr_user_name, false, prefix_suffix_cmp, NULL);
paircmp_register(attr_suffix, attr_user_name, false, prefix_suffix_cmp, NULL);
paircmp_register(attr_packet_type, NULL, true, packet_cmp, NULL);
paircmp_register(attr_client_ip_address, NULL, true, generic_cmp, NULL);
paircmp_register(attr_packet_src_ip_address, NULL, true, generic_cmp, NULL);
paircmp_register(attr_packet_dst_ip_address, NULL, true, generic_cmp, NULL);
paircmp_register(attr_packet_src_port, NULL, true, generic_cmp, NULL);
paircmp_register(attr_packet_dst_port, NULL, true, generic_cmp, NULL);
paircmp_register(attr_request_processing_stage, NULL, true, generic_cmp, NULL);
paircmp_register(attr_packet_src_ipv6_address, NULL, true, generic_cmp, NULL);
paircmp_register(attr_packet_dst_ipv6_address, NULL, true, generic_cmp, NULL);
paircmp_register(attr_virtual_server, NULL, true, generic_cmp, NULL);
return 0;
}
int main(int argc, char **argv)
{
int c;
char filesecret[256];
FILE *fp;
int force_af = AF_UNSPEC;
radsnmp_conf_t *conf;
int ret;
int sockfd;
TALLOC_CTX *autofree = talloc_autofree_context();
fr_log_fp = stderr;
conf = talloc_zero(autofree, radsnmp_conf_t);
conf->proto = IPPROTO_UDP;
conf->dict_dir = DICTDIR;
conf->raddb_dir = RADDBDIR;
conf->secret = talloc_strdup(conf, "testing123");
conf->timeout.tv_sec = 3;
conf->retries = 5;
#ifndef NDEBUG
if (fr_fault_setup(autofree, getenv("PANIC_ACTION"), argv[0]) < 0) {
fr_perror("radsnmp");
exit(EXIT_FAILURE);
}
#endif
talloc_set_log_stderr();
while ((c = getopt(argc, argv, "46c:d:D:f:Fhi:l:n:p:P:qr:sS:t:vx")) != -1) switch (c) {
case '4':
force_af = AF_INET;
break;
case '6':
force_af = AF_INET6;
break;
case 'D':
conf->dict_dir = optarg;
break;
case 'd':
conf->raddb_dir = optarg;
break;
case 'l':
{
int log_fd;
if (strcmp(optarg, "stderr") == 0) {
fr_log_fp = stderr; /* stdout goes to netsnmp */
break;
}
log_fd = open(optarg, O_WRONLY | O_APPEND | O_CREAT, 0640);
if (log_fd < 0) {
fprintf(stderr, "radsnmp: Failed to open log file %s: %s\n",
optarg, fr_syserror(errno));
exit(EXIT_FAILURE);
}
fr_log_fp = fdopen(log_fd, "a");
}
break;
case 'P':
conf->proto_str = optarg;
if (strcmp(conf->proto_str, "tcp") != 0) {
if (strcmp(conf->proto_str, "udp") != 0) usage();
} else {
conf->proto = IPPROTO_TCP;
}
break;
case 'r':
if (!isdigit((int) *optarg)) usage();
conf->retries = atoi(optarg);
if ((conf->retries == 0) || (conf->retries > 1000)) usage();
break;
case 'S':
{
char *p;
fp = fopen(optarg, "r");
if (!fp) {
ERROR("Error opening %s: %s", optarg, fr_syserror(errno));
exit(EXIT_FAILURE);
}
if (fgets(filesecret, sizeof(filesecret), fp) == NULL) {
ERROR("Error reading %s: %s", optarg, fr_syserror(errno));
exit(EXIT_FAILURE);
}
fclose(fp);
/* truncate newline */
p = filesecret + strlen(filesecret) - 1;
while ((p >= filesecret) &&
(*p < ' ')) {
*p = '\0';
--p;
}
if (strlen(filesecret) < 2) {
ERROR("Secret in %s is too short", optarg);
exit(EXIT_FAILURE);
}
talloc_free(conf->secret);
conf->secret = talloc_strdup(conf, filesecret);
}
break;
case 't':
if (fr_timeval_from_str(&conf->timeout, optarg) < 0) {
ERROR("Failed parsing timeout value %s", fr_strerror());
exit(EXIT_FAILURE);
}
break;
case 'v':
DEBUG("%s", radsnmp_version);
exit(0);
case 'x':
fr_debug_lvl++;
break;
case 'h':
default:
usage();
}
argc -= (optind - 1);
argv += (optind - 1);
if ((argc < 2) || ((conf->secret == NULL) && (argc < 3))) {
ERROR("Insufficient arguments");
usage();
}
/*
* Mismatch between the binary and the libraries it depends on
*/
if (fr_check_lib_magic(RADIUSD_MAGIC_NUMBER) < 0) {
fr_perror("radsnmp");
return EXIT_FAILURE;
}
if (fr_dict_autoload(radsnmp_dict) < 0) {
fr_perror("radsnmp");
exit(EXIT_FAILURE);
}
if (fr_dict_attr_autoload(radsnmp_dict_attr) < 0) {
fr_perror("radsnmp");
exit(EXIT_FAILURE);
}
if (fr_dict_read(dict_freeradius, conf->raddb_dir, FR_DICTIONARY_FILE) == -1) {
fr_perror("radsnmp");
exit(EXIT_FAILURE);
}
fr_strerror(); /* Clear the error buffer */
if (fr_log_fp) setvbuf(fr_log_fp, NULL, _IONBF, 0);
/*
* Get the request type
*/
if (!isdigit((int) argv[2][0])) {
int code;
code = fr_str2int(fr_request_types, argv[2], -1);
if (code < 0) {
ERROR("Unrecognised request type \"%s\"", argv[2]);
usage();
}
conf->code = (unsigned int)code;
} else {
conf->code = atoi(argv[2]);
}
/*
* Resolve hostname.
*/
if (fr_inet_pton_port(&conf->server_ipaddr, &conf->server_port, argv[1], -1, force_af, true, true) < 0) {
ERROR("%s", fr_strerror());
exit(EXIT_FAILURE);
}
/*
* Add the secret
*/
if (argv[3]) {
talloc_free(conf->secret);
conf->secret = talloc_strdup(conf, argv[3]);
}
conf->snmp_root = fr_dict_attr_child_by_num(attr_vendor_specific, VENDORPEC_FREERADIUS);
if (!conf->snmp_root) {
ERROR("Incomplete dictionary: Missing definition for Extended-Attribute-1(%i)."
"Vendor-Specific(%i).FreeRADIUS(%i)",
attr_extended_attribute_1->attr,
attr_vendor_specific->attr,
VENDORPEC_FREERADIUS);
dict_error:
talloc_free(conf);
exit(EXIT_FAILURE);
}
conf->snmp_oid_root = fr_dict_attr_child_by_num(conf->snmp_root, 1);
if (!conf->snmp_oid_root) {
ERROR("Incomplete dictionary: Missing definition for 1.Extended-Attribute-1(%i)."
"Vendor-Specific(%i).FreeRADIUS(%i).FreeRADIUS-Iso(%i)",
attr_extended_attribute_1->attr,
attr_vendor_specific->attr,
VENDORPEC_FREERADIUS, 1);
goto dict_error;
}
switch (conf->proto) {
case IPPROTO_TCP:
sockfd = fr_socket_client_tcp(NULL, &conf->server_ipaddr, conf->server_port, true);
break;
default:
case IPPROTO_UDP:
sockfd = fr_socket_client_udp(NULL, NULL, &conf->server_ipaddr, conf->server_port, true);
break;
}
if (sockfd < 0) {
ERROR("Failed connecting to server %s:%hu", "foo", conf->server_port);
ret = 1;
goto finish;
}
fr_set_signal(SIGPIPE, rs_signal_stop);
fr_set_signal(SIGINT, rs_signal_stop);
fr_set_signal(SIGTERM, rs_signal_stop);
#ifdef SIGQUIT
fr_set_signal(SIGQUIT, rs_signal_stop);
#endif
DEBUG("%s - Starting pass_persist read loop", radsnmp_version);
ret = radsnmp_send_recv(conf, sockfd);
DEBUG("Read loop done");
finish:
if (fr_log_fp) fflush(fr_log_fp);
/*
* Everything should be parented from conf
*/
talloc_free(conf);
/*
* ...except the dictionaries
*/
fr_dict_autofree(radsnmp_dict);
return ret;
}
int main(int argc, char **argv)
{
static uint16_t server_port = 0;
static int packet_code = 0;
static fr_ipaddr_t server_ipaddr;
static fr_ipaddr_t client_ipaddr;
int c;
char const *raddb_dir = RADDBDIR;
char const *dict_dir = DICTDIR;
char const *filename = NULL;
RADIUS_PACKET *request = NULL;
RADIUS_PACKET *reply = NULL;
TALLOC_CTX *autofree = talloc_autofree_context();
int ret;
fr_debug_lvl = 1;
fr_log_fp = stdout;
while ((c = getopt(argc, argv, "d:D:f:hr:t:vxi:")) != -1) switch(c) {
case 'D':
dict_dir = optarg;
break;
case 'd':
raddb_dir = optarg;
break;
case 'f':
filename = optarg;
break;
case 'i':
iface = optarg;
break;
case 'r':
if (!isdigit((int) *optarg)) usage();
retries = atoi(optarg);
if ((retries == 0) || (retries > 1000)) usage();
break;
case 't':
if (!isdigit((int) *optarg)) usage();
timeout = atof(optarg);
break;
case 'v':
DEBUG("%s", dhcpclient_version);
exit(0);
case 'x':
fr_debug_lvl++;
break;
case 'h':
default:
usage();
}
argc -= (optind - 1);
argv += (optind - 1);
if (argc < 2) usage();
/* convert timeout to a struct timeval */
#define USEC 1000000
tv_timeout.tv_sec = timeout;
tv_timeout.tv_usec = ((timeout - (float) tv_timeout.tv_sec) * USEC);
if (fr_dict_global_init(autofree, dict_dir) < 0) {
fr_perror("dhcpclient");
exit(EXIT_FAILURE);
}
if (fr_dict_autoload(dhcpclient_dict) < 0) {
fr_perror("dhcpclient");
exit(EXIT_FAILURE);
}
if (fr_dict_attr_autoload(dhcpclient_dict_attr) < 0) {
fr_perror("dhcpclient");
exit(EXIT_FAILURE);
}
if (fr_dict_read(dict_freeradius, raddb_dir, FR_DICTIONARY_FILE) == -1) {
fr_perror("dhcpclient");
exit(EXIT_FAILURE);
}
fr_strerror(); /* Clear the error buffer */
/*
* Initialise the DHCPv4 library
*/
fr_dhcpv4_global_init();
/*
* Resolve hostname.
*/
server_ipaddr.af = AF_INET;
if (strcmp(argv[1], "-") != 0) {
if (fr_inet_pton_port(&server_ipaddr, &server_port, argv[1],
strlen(argv[1]), AF_UNSPEC, true, true) < 0) {
fr_perror("dhcpclient");
fr_exit_now(1);
}
client_ipaddr.af = server_ipaddr.af;
}
/*
* See what kind of request we want to send.
*/
if (argc >= 3) {
if (!isdigit((int) argv[2][0])) {
packet_code = fr_str2int(request_types, argv[2], -2);
if (packet_code == -2) {
ERROR("Unknown packet type: %s", argv[2]);
usage();
}
} else {
packet_code = atoi(argv[2]);
}
}
if (!server_port) server_port = 67;
/*
* set "raw mode" if an interface is specified and if destination
* IP address is the broadcast address.
*/
if (iface) {
iface_ind = if_nametoindex(iface);
if (iface_ind <= 0) {
ERROR("Unknown interface: %s", iface);
exit(EXIT_FAILURE);
}
if (server_ipaddr.addr.v4.s_addr == 0xFFFFFFFF) {
ERROR("Using interface: %s (index: %d) in raw packet mode", iface, iface_ind);
raw_mode = true;
}
}
request = request_init(filename);
if (!request || !request->vps) {
ERROR("Nothing to send");
exit(EXIT_FAILURE);
}
/*
* Set defaults if they weren't specified via pairs
*/
if (request->src_port == 0) request->src_port = server_port + 1;
if (request->dst_port == 0) request->dst_port = server_port;
if (request->src_ipaddr.af == AF_UNSPEC) request->src_ipaddr = client_ipaddr;
if (request->dst_ipaddr.af == AF_UNSPEC) request->dst_ipaddr = server_ipaddr;
if (!request->code) request->code = packet_code;
/*
* Sanity check.
*/
if (!request->code) {
ERROR("Command was %s, and request did not contain DHCP-Message-Type nor Packet-Type",
(argc >= 3) ? "'auto'" : "unspecified");
exit(EXIT_FAILURE);
}
/*
* These kind of packets do not get a reply, so don't wait for one.
*/
if ((request->code == FR_DHCP_RELEASE) || (request->code == FR_DHCP_DECLINE)) {
reply_expected = false;
}
/*
* Encode the packet
*/
if (fr_dhcpv4_packet_encode(request) < 0) {
ERROR("Failed encoding packet");
exit(EXIT_FAILURE);
}
/*
* Decode to produce VALUE_PAIRs from the default field
*/
if (fr_debug_lvl) {
fr_dhcpv4_packet_decode(request);
dhcp_packet_debug(request, false);
}
#ifdef HAVE_LIBPCAP
if (raw_mode) {
ret = send_with_pcap(&reply, request);
} else
#endif
{
ret = send_with_socket(&reply, request);
}
if (reply) {
if (fr_dhcpv4_packet_decode(reply) < 0) {
ERROR("Failed decoding packet");
ret = -1;
}
dhcp_packet_debug(reply, true);
}
fr_dhcpv4_global_free();
fr_dict_autofree(dhcpclient_dict);
return ret < 0 ? 1 : 0;
}