Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * libipq.h |
| 3 | * |
| 4 | * IPQ library for userspace. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | */ |
| 17 | #ifndef _LIBIPQ_H |
| 18 | #define _LIBIPQ_H |
| 19 | |
| 20 | #include <errno.h> |
| 21 | #include <unistd.h> |
| 22 | #include <fcntl.h> |
| 23 | #include <sys/types.h> |
| 24 | #include <sys/socket.h> |
| 25 | #include <sys/uio.h> |
| 26 | #include <asm/types.h> |
| 27 | #include <linux/netlink.h> |
| 28 | |
| 29 | #include <linux/netfilter_ipv4/ip_queue.h> |
| 30 | |
| 31 | #ifdef DEBUG_LIBIPQ |
| 32 | #include <stdio.h> |
| 33 | #define LDEBUG(x...) fprintf(stderr, ## x) |
| 34 | #else |
| 35 | #define LDEBUG(x...) |
| 36 | #endif /* DEBUG_LIBIPQ */ |
| 37 | |
| 38 | /* FIXME: glibc sucks */ |
| 39 | #ifndef MSG_TRUNC |
| 40 | #define MSG_TRUNC 0x20 |
| 41 | #endif |
| 42 | |
| 43 | struct ipq_handle |
| 44 | { |
| 45 | int fd; |
| 46 | u_int8_t blocking; |
| 47 | struct sockaddr_nl local; |
| 48 | struct sockaddr_nl peer; |
| 49 | }; |
| 50 | |
| 51 | struct ipq_handle *ipq_create_handle(u_int32_t flags); |
| 52 | |
| 53 | int ipq_destroy_handle(struct ipq_handle *h); |
| 54 | |
| 55 | ssize_t ipq_read(const struct ipq_handle *h, |
| 56 | unsigned char *buf, size_t len, int timeout); |
| 57 | |
| 58 | int ipq_set_mode(const struct ipq_handle *h, u_int8_t mode, size_t len); |
| 59 | |
| 60 | ipq_packet_msg_t *ipq_get_packet(const unsigned char *buf); |
| 61 | |
| 62 | int ipq_message_type(const unsigned char *buf); |
| 63 | |
| 64 | int ipq_get_msgerr(const unsigned char *buf); |
| 65 | |
| 66 | int ipq_set_verdict(const struct ipq_handle *h, |
| 67 | unsigned long id, |
| 68 | unsigned int verdict, |
| 69 | size_t data_len, |
| 70 | unsigned char *buf); |
| 71 | |
| 72 | int ipq_ctl(const struct ipq_handle *h, int request, ...); |
| 73 | |
| 74 | void ipq_perror(const char *s); |
| 75 | |
| 76 | #endif /* _LIBIPQ_H */ |
| 77 | |