--- /dev/null
+/* printpkt.c
+ *
+ * build something looking like a iptables LOG message
+ *
+ * (C) 2000-2003 by Harald Welte <laforge@gnumonks.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * $Id: printpkt.c 6432 2006-01-25 11:21:28Z /C=DE/ST=Berlin/L=Berlin/O=Netfilter Project/OU=Development/CN=laforge/emailAddress=laforge@netfilter.org $
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <time.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h>
+#include <ulogd/ulogd.h>
+#include <ulogd/conffile.h>
+
+#ifndef HOST_NAME_MAX
+#warning this libc does not define HOST_NAME_MAX
+#define HOST_NAME_MAX (255+1)
+#endif
+
+#define NIPQUAD(addr) \
+ ((unsigned char *)&addr)[0], \
+ ((unsigned char *)&addr)[1], \
+ ((unsigned char *)&addr)[2], \
+ ((unsigned char *)&addr)[3]
+
+struct intr_id {
+ char* name;
+ unsigned int id;
+};
+
+static char hostname[HOST_NAME_MAX+1];
+
+#define INTR_IDS 35
+static struct intr_id intr_ids[INTR_IDS] = {
+ { "oob.time.sec", 0 },
+ { "oob.prefix", 0 },
+ { "oob.in", 0 },
+ { "oob.out", 0 },
+ { "raw.mac", 0 },
+ { "ip.saddr", 0 },
+ { "ip.daddr", 0 },
+ { "ip.totlen", 0 },
+ { "ip.tos", 0 },
+ { "ip.ttl", 0 },
+ { "ip.id", 0 },
+ { "ip.fragoff", 0 },
+ { "ip.protocol", 0 },
+ { "tcp.sport", 0 },
+ { "tcp.dport", 0 },
+ { "tcp.seq", 0 },
+ { "tcp.ackseq", 0 },
+ { "tcp.window", 0 },
+ { "tcp.urg", 0 },
+ { "tcp.ack", 0 },
+ { "tcp.psh", 0 },
+ { "tcp.rst", 0 },
+ { "tcp.syn", 0 },
+ { "tcp.fin", 0 },
+ { "tcp.urgp", 0 },
+ { "udp.sport", 0 },
+ { "udp.dport", 0 },
+ { "udp.len", 0 },
+ { "icmp.type", 0 },
+ { "icmp.code", 0 },
+ { "icmp.echoid", 0 },
+ { "icmp.echoseq", 0 },
+ { "icmp.gateway", 0 },
+ { "icmp.fragmtu", 0 },
+ { "ahesp.spi", 0 },
+};
+
+#define GET_VALUE(x) ulogd_keyh[intr_ids[x].id].interp->result[ulogd_keyh[intr_ids[x].id].offset].value
+#define GET_FLAGS(x) ulogd_keyh[intr_ids[x].id].interp->result[ulogd_keyh[intr_ids[x].id].offset].flags
+
+int printpkt_print(ulog_iret_t *res, char *buf, int prefix)
+{
+ char *timestr;
+ char *tmp;
+ time_t now;
+
+ char *buf_cur = buf;
+
+ if (prefix) {
+ now = (time_t) GET_VALUE(0).ui32;
+ timestr = ctime(&now) + 4;
+
+ /* truncate time */
+ if ((tmp = strchr(timestr, '\n')))
+ *tmp = '\0';
+
+ /* truncate hostname */
+ if ((tmp = strchr(hostname, '.')))
+ *tmp = '\0';
+
+ /* print time and hostname */
+ buf_cur += sprintf(buf_cur, "%.15s %s", timestr, hostname);
+ }
+
+ if (*(char *) GET_VALUE(1).ptr)
+ buf_cur += sprintf(buf_cur, " %s", (char *) GET_VALUE(1).ptr);
+
+ buf_cur += sprintf(buf_cur," IN=%s OUT=%s ",
+ (char *) GET_VALUE(2).ptr,
+ (char *) GET_VALUE(3).ptr);
+
+ /* FIXME: configurable */
+ buf_cur += sprintf(buf_cur, "MAC=%s ",
+ (GET_FLAGS(4) & ULOGD_RETF_VALID) ? (char *) GET_VALUE(4).ptr : "");
+
+ buf_cur += sprintf(buf_cur, "SRC=%s ",
+ inet_ntoa((struct in_addr) {htonl(GET_VALUE(5).ui32)}));
+ buf_cur += sprintf(buf_cur, "DST=%s ",
+ inet_ntoa((struct in_addr) {htonl(GET_VALUE(6).ui32)}));
+
+ buf_cur += sprintf(buf_cur,"LEN=%u TOS=%02X PREC=0x%02X TTL=%u ID=%u ",
+ GET_VALUE(7).ui16, GET_VALUE(8).ui8 & IPTOS_TOS_MASK,
+ GET_VALUE(8).ui8 & IPTOS_PREC_MASK, GET_VALUE(9).ui8,
+ GET_VALUE(10).ui16);
+
+ if (GET_VALUE(10).ui16 & IP_RF)
+ buf_cur += sprintf(buf_cur, "CE ");
+
+ if (GET_VALUE(11).ui16 & IP_DF)
+ buf_cur += sprintf(buf_cur, "DF ");
+
+ if (GET_VALUE(11).ui16 & IP_MF)
+ buf_cur += sprintf(buf_cur, "MF ");
+
+ if (GET_VALUE(11).ui16 & IP_OFFMASK)
+ buf_cur += sprintf(buf_cur, "FRAG:%u ",
+ GET_VALUE(11).ui16 & IP_OFFMASK);
+
+ switch (GET_VALUE(12).ui8) {
+
+ case IPPROTO_TCP:
+ buf_cur += sprintf(buf_cur, "PROTO=TCP ");
+ buf_cur += sprintf(buf_cur, "SPT=%u DPT=%u ",
+ GET_VALUE(13).ui16, GET_VALUE(14).ui16);
+ /* FIXME: config */
+ buf_cur += sprintf(buf_cur, "SEQ=%u ACK=%u ",
+ GET_VALUE(15).ui32, GET_VALUE(16).ui32);
+
+ buf_cur += sprintf(buf_cur, "WINDOW=%u ", GET_VALUE(17).ui16);
+
+// buf_cur += sprintf(buf_cur, "RES=0x%02x ",
+
+ if (GET_VALUE(18).b)
+ buf_cur += sprintf(buf_cur, "URG ");
+
+ if (GET_VALUE(19).b)
+ buf_cur += sprintf(buf_cur, "ACK ");
+
+ if (GET_VALUE(20).b)
+ buf_cur += sprintf(buf_cur, "PSH ");
+
+ if (GET_VALUE(21).b)
+ buf_cur += sprintf(buf_cur, "RST ");
+
+ if (GET_VALUE(22).b)
+ buf_cur += sprintf(buf_cur, "SYN ");
+
+ if (GET_VALUE(23).b)
+ buf_cur += sprintf(buf_cur, "FIN ");
+
+ buf_cur += sprintf(buf_cur, "URGP=%u ", GET_VALUE(24).ui16);
+
+ break;
+ case IPPROTO_UDP:
+
+ buf_cur += sprintf(buf_cur, "PROTO=UDP ");
+
+ buf_cur += sprintf(buf_cur, "SPT=%u DPT=%u LEN=%u ",
+ GET_VALUE(25).ui16, GET_VALUE(26).ui16,
+ GET_VALUE(27).ui16);
+ break;
+ case IPPROTO_ICMP:
+
+ buf_cur += sprintf(buf_cur, "PROTO=ICMP ");
+
+ buf_cur += sprintf(buf_cur, "TYPE=%u CODE=%u ",
+ GET_VALUE(28).ui8, GET_VALUE(29).ui8);
+
+ switch (GET_VALUE(28).ui8) {
+ case ICMP_ECHO:
+ case ICMP_ECHOREPLY:
+ buf_cur += sprintf(buf_cur, "ID=%u SEQ=%u ",
+ GET_VALUE(30).ui16,
+ GET_VALUE(31).ui16);
+ break;
+ case ICMP_PARAMETERPROB:
+ buf_cur += sprintf(buf_cur, "PARAMETER=%u ",
+ GET_VALUE(32).ui32 >> 24);
+ break;
+ case ICMP_REDIRECT:
+ buf_cur += sprintf(buf_cur, "GATEWAY=%s ", inet_ntoa((struct in_addr) {htonl(GET_VALUE(32).ui32)}));
+ break;
+ case ICMP_DEST_UNREACH:
+ if (GET_VALUE(29).ui8 == ICMP_FRAG_NEEDED)
+ buf_cur += sprintf(buf_cur, "MTU=%u ",
+ GET_VALUE(33).ui16);
+ break;
+ }
+ break;
+ case IPPROTO_ESP:
+ case IPPROTO_AH:
+ buf_cur += sprintf(buf_cur, "PROTO=%s ", GET_VALUE(12).ui8 == IPPROTO_ESP ? "ESP" : "AH");
+ /* FIXME: "INCOMPLETE [%u bytes]" in case of short pkt */
+ if (intr_ids[34].id > 0) {
+ buf_cur += sprintf(buf_cur, "SPI=0x%x ", GET_VALUE(34).ui32);
+ }
+ break;
+ default:
+
+ buf_cur += sprintf(buf_cur, "PROTO=%u ", GET_VALUE(12).ui8);
+ }
+ strcat(buf_cur, "\n");
+
+ return 0;
+}
+
+/* get all key id's for the keys we are intrested in */
+static int get_ids(void)
+{
+ int i;
+ struct intr_id *cur_id;
+
+ for (i = 0; i < INTR_IDS; i++) {
+ cur_id = &intr_ids[i];
+ cur_id->id = keyh_getid(cur_id->name);
+ if (!cur_id->id) {
+ ulogd_log(ULOGD_ERROR,
+ "Cannot resolve keyhash id for %s\n",
+ cur_id->name);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int printpkt_init(void)
+{
+ if (gethostname(hostname, sizeof(hostname)) < 0) {
+ ulogd_log(ULOGD_FATAL, "can't gethostname(): %s\n",
+ strerror(errno));
+ exit(2);
+ }
+
+ if (get_ids())
+ return 1;
+
+ return 0;
+}
git://git.onelab.eu / distributedratelimiting.git / blobdiff