| /* |
| * Copyright (c) 1994, 1995, 1996 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the Computer Systems |
| * Engineering Group at Lawrence Berkeley Laboratory. |
| * 4. Neither the name of the University nor of the Laboratory may be used |
| * to endorse or promote products derived from this software without |
| * specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#) $Header: /tcpdump/master/libpcap/pcap-int.h,v 1.55.2.4 2003-12-15 01:42:24 guy Exp $ (LBL) |
| */ |
| |
| #ifndef pcap_int_h |
| #define pcap_int_h |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include <pcap.h> |
| |
| #ifdef WIN32 |
| #include <packet32.h> |
| #endif /* WIN32 */ |
| |
| /* |
| * Savefile |
| */ |
| typedef enum { |
| NOT_SWAPPED, |
| SWAPPED, |
| MAYBE_SWAPPED |
| } swapped_type_t; |
| |
| struct pcap_sf { |
| FILE *rfile; |
| int swapped; |
| int hdrsize; |
| swapped_type_t lengths_swapped; |
| int version_major; |
| int version_minor; |
| u_char *base; |
| }; |
| |
| struct pcap_md { |
| struct pcap_stat stat; |
| /*XXX*/ |
| int use_bpf; /* using kernel filter */ |
| u_long TotPkts; /* can't oflow for 79 hrs on ether */ |
| u_long TotAccepted; /* count accepted by filter */ |
| u_long TotDrops; /* count of dropped packets */ |
| long TotMissed; /* missed by i/f during this run */ |
| long OrigMissed; /* missed by i/f before this run */ |
| #ifdef linux |
| int sock_packet; /* using Linux 2.0 compatible interface */ |
| int timeout; /* timeout specified to pcap_open_live */ |
| int clear_promisc; /* must clear promiscuous mode when we close */ |
| int cooked; /* using SOCK_DGRAM rather than SOCK_RAW */ |
| int lo_ifindex; /* interface index of the loopback device */ |
| char *device; /* device name */ |
| struct pcap *next; /* list of open promiscuous sock_packet pcaps */ |
| #endif |
| |
| #ifdef HAVE_DAG_API |
| void *dag_mem_base; /* DAG card memory base address */ |
| u_int dag_mem_bottom; /* DAG card current memory bottom pointer */ |
| u_int dag_mem_top; /* DAG card current memory top pointer */ |
| int dag_fcs_bits; /* Number of checksum bits from link layer */ |
| int dag_offset_flags; /* Flags to pass to dag_offset(). */ |
| #endif |
| }; |
| |
| struct pcap { |
| #ifdef WIN32 |
| ADAPTER *adapter; |
| LPPACKET Packet; |
| int timeout; |
| int nonblock; |
| #else |
| int fd; |
| int selectable_fd; |
| #endif /* WIN32 */ |
| int snapshot; |
| int linktype; |
| int tzoff; /* timezone offset */ |
| int offset; /* offset for proper alignment */ |
| |
| int break_loop; /* flag set to force break from packet-reading loop */ |
| |
| struct pcap_sf sf; |
| struct pcap_md md; |
| |
| /* |
| * Read buffer. |
| */ |
| int bufsize; |
| u_char *buffer; |
| u_char *bp; |
| int cc; |
| |
| /* |
| * Place holder for pcap_next(). |
| */ |
| u_char *pkt; |
| |
| /* |
| * Methods. |
| */ |
| int (*read_op)(pcap_t *, int cnt, pcap_handler, u_char *); |
| int (*setfilter_op)(pcap_t *, struct bpf_program *); |
| int (*set_datalink_op)(pcap_t *, int); |
| int (*getnonblock_op)(pcap_t *, char *); |
| int (*setnonblock_op)(pcap_t *, int, char *); |
| int (*stats_op)(pcap_t *, struct pcap_stat *); |
| void (*close_op)(pcap_t *); |
| |
| /* |
| * Placeholder for filter code if bpf not in kernel. |
| */ |
| struct bpf_program fcode; |
| |
| char errbuf[PCAP_ERRBUF_SIZE + 1]; |
| int dlt_count; |
| int *dlt_list; |
| |
| struct pcap_pkthdr pcap_header; /* This is needed for the pcap_next_ex() to work */ |
| }; |
| |
| /* |
| * This is a timeval as stored in disk in a dumpfile. |
| * It has to use the same types everywhere, independent of the actual |
| * `struct timeval' |
| */ |
| |
| struct pcap_timeval { |
| bpf_int32 tv_sec; /* seconds */ |
| bpf_int32 tv_usec; /* microseconds */ |
| }; |
| |
| /* |
| * How a `pcap_pkthdr' is actually stored in the dumpfile. |
| * |
| * Do not change the format of this structure, in any way (this includes |
| * changes that only affect the length of fields in this structure), |
| * and do not make the time stamp anything other than seconds and |
| * microseconds (e.g., seconds and nanoseconds). Instead: |
| * |
| * introduce a new structure for the new format; |
| * |
| * send mail to "tcpdump-workers@tcpdump.org", requesting a new |
| * magic number for your new capture file format, and, when |
| * you get the new magic number, put it in "savefile.c"; |
| * |
| * use that magic number for save files with the changed record |
| * header; |
| * |
| * make the code in "savefile.c" capable of reading files with |
| * the old record header as well as files with the new record header |
| * (using the magic number to determine the header format). |
| * |
| * Then supply the changes to "patches@tcpdump.org", so that future |
| * versions of libpcap and programs that use it (such as tcpdump) will |
| * be able to read your new capture file format. |
| */ |
| |
| struct pcap_sf_pkthdr { |
| struct pcap_timeval ts; /* time stamp */ |
| bpf_u_int32 caplen; /* length of portion present */ |
| bpf_u_int32 len; /* length this packet (off wire) */ |
| }; |
| |
| /* |
| * How a `pcap_pkthdr' is actually stored in dumpfiles written |
| * by some patched versions of libpcap (e.g. the ones in Red |
| * Hat Linux 6.1 and 6.2). |
| * |
| * Do not change the format of this structure, in any way (this includes |
| * changes that only affect the length of fields in this structure). |
| * Instead, introduce a new structure, as per the above. |
| */ |
| |
| struct pcap_sf_patched_pkthdr { |
| struct pcap_timeval ts; /* time stamp */ |
| bpf_u_int32 caplen; /* length of portion present */ |
| bpf_u_int32 len; /* length this packet (off wire) */ |
| int index; |
| unsigned short protocol; |
| unsigned char pkt_type; |
| }; |
| |
| int yylex(void); |
| |
| #ifndef min |
| #define min(a, b) ((a) > (b) ? (b) : (a)) |
| #endif |
| |
| /* XXX should these be in pcap.h? */ |
| int pcap_offline_read(pcap_t *, int, pcap_handler, u_char *); |
| int pcap_read(pcap_t *, int cnt, pcap_handler, u_char *); |
| |
| |
| /* |
| * Ultrix, DEC OSF/1^H^H^H^H^H^H^H^H^HDigital UNIX^H^H^H^H^H^H^H^H^H^H^H^H |
| * Tru64 UNIX, and NetBSD pad to make everything line up on a nice boundary. |
| */ |
| #if defined(ultrix) || defined(__osf__) || defined(__NetBSD__) |
| #define PCAP_FDDIPAD 3 |
| #endif |
| |
| #ifndef HAVE_STRLCPY |
| #define strlcpy(x, y, z) \ |
| (strncpy((x), (y), (z)), \ |
| ((z) <= 0 ? 0 : ((x)[(z) - 1] = '\0')), \ |
| strlen((y))) |
| #endif |
| |
| #include <stdarg.h> |
| |
| #if !defined(HAVE_SNPRINTF) |
| #define snprintf pcap_snprintf |
| extern int snprintf (char *, size_t, const char *, ...); |
| #endif |
| |
| #if !defined(HAVE_VSNPRINTF) |
| #define vsnprintf pcap_vsnprintf |
| extern int vsnprintf (char *, size_t, const char *, va_list ap); |
| #endif |
| |
| /* |
| * Routines that most pcap implementations can use for non-blocking mode. |
| */ |
| #ifndef WIN32 |
| int pcap_getnonblock_fd(pcap_t *, char *); |
| int pcap_setnonblock_fd(pcap_t *p, int, char *); |
| #endif |
| |
| /* |
| * Internal interfaces for "pcap_findalldevs()". |
| * |
| * "pcap_platform_finddevs()" is a platform-dependent routine to |
| * add devices not found by the "standard" mechanisms (SIOCGIFCONF, |
| * "getifaddrs()", etc.. |
| * |
| * "pcap_add_if()" adds an interface to the list of interfaces. |
| */ |
| int pcap_platform_finddevs(pcap_if_t **, char *); |
| int add_addr_to_iflist(pcap_if_t **, char *, u_int, struct sockaddr *, |
| size_t, struct sockaddr *, size_t, struct sockaddr *, size_t, |
| struct sockaddr *, size_t, char *); |
| int pcap_add_if(pcap_if_t **, char *, u_int, const char *, char *); |
| struct sockaddr *dup_sockaddr(struct sockaddr *, size_t); |
| int add_or_find_if(pcap_if_t **, pcap_if_t **, const char *, u_int, |
| const char *, char *); |
| |
| #ifdef WIN32 |
| char *pcap_win32strerror(void); |
| #endif |
| |
| /* XXX */ |
| extern int pcap_fddipad; |
| |
| int install_bpf_program(pcap_t *, struct bpf_program *); |
| |
| int pcap_strcasecmp(const char *, const char *); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |