* 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 1.66 2004-12-15 00:25:09 guy Exp $ (LBL)
*/
#ifndef pcap_int_h
-#define pcap_int_h
+#define pcap_int_h
+
+#include <stddef.h>
+
+#include <signal.h>
+
+#include <pcap/pcap.h>
+
+#ifdef MSDOS
+ #include <fcntl.h>
+ #include <io.h>
+#endif
+
+#include "varattrs.h"
+#include "fmtutils.h"
+
+#include <stdarg.h>
+
+#include "portability.h"
+
+/*
+ * If we're compiling with Visual Studio, make sure we have at least
+ * VS 2015 or later, so we have sufficient C99 support.
+ *
+ * XXX - verify that we have at least C99 support on UN*Xes?
+ *
+ * What about MinGW or various DOS toolchains? We're currently assuming
+ * sufficient C99 support there.
+ */
+#if defined(_MSC_VER)
+ /*
+ * Compiler is MSVC. Make sure we have VS 2015 or later.
+ */
+ #if _MSC_VER < 1900
+ #error "Building libpcap requires VS 2015 or later"
+ #endif
+#endif
+
+/*
+ * Version string.
+ * Uses PACKAGE_VERSION from config.h.
+ */
+#define PCAP_VERSION_STRING "libpcap version " PACKAGE_VERSION
#ifdef __cplusplus
extern "C" {
#endif
-#include <pcap.h>
+/*
+ * If pcap_new_api is set, we disable pcap_lookupdev(), because:
+ *
+ * it's not thread-safe, and is marked as deprecated, on all
+ * platforms;
+ *
+ * on Windows, it may return UTF-16LE strings, which the program
+ * might then pass to pcap_create() (or to pcap_open_live(), which
+ * then passes them to pcap_create()), requiring pcap_create() to
+ * check for UTF-16LE strings using a hack, and that hack 1)
+ * *cannot* be 100% reliable and 2) runs the risk of going past the
+ * end of the string.
+ *
+ * We keep it around in legacy mode for compatibility.
+ *
+ * We also disable the aforementioned hack in pcap_create().
+ */
+extern int pcap_new_api;
-#ifdef WIN32
-#include <packet32.h>
-#endif /* WIN32 */
+/*
+ * If pcap_utf_8_mode is set, on Windows we treat strings as UTF-8.
+ *
+ * On UN*Xes, we assume all strings are and should be in UTF-8, regardless
+ * of the setting of this flag.
+ */
+extern int pcap_utf_8_mode;
/*
- * Savefile
+ * Swap byte ordering of unsigned long long timestamp on a big endian
+ * machine.
*/
-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;
-};
+#define SWAPLL(ull) ((ull & 0xff00000000000000ULL) >> 56) | \
+ ((ull & 0x00ff000000000000ULL) >> 40) | \
+ ((ull & 0x0000ff0000000000ULL) >> 24) | \
+ ((ull & 0x000000ff00000000ULL) >> 8) | \
+ ((ull & 0x00000000ff000000ULL) << 8) | \
+ ((ull & 0x0000000000ff0000ULL) << 24) | \
+ ((ull & 0x000000000000ff00ULL) << 40) | \
+ ((ull & 0x00000000000000ffULL) << 56)
-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 */
- char *device; /* device name */
-#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 ifindex; /* interface index of device we're bound to */
- int lo_ifindex; /* interface index of the loopback device */
- struct pcap *next; /* list of open promiscuous sock_packet pcaps */
-#endif
+/*
+ * Maximum snapshot length.
+ *
+ * Somewhat arbitrary, but chosen to be:
+ *
+ * 1) big enough for maximum-size Linux loopback packets (65549)
+ * and some USB packets captured with USBPcap:
+ *
+ * https://desowin.org/usbpcap/
+ *
+ * (> 131072, < 262144)
+ *
+ * and
+ *
+ * 2) small enough not to cause attempts to allocate huge amounts of
+ * memory; some applications might use the snapshot length in a
+ * savefile header to control the size of the buffer they allocate,
+ * so a size of, say, 2^31-1 might not work well. (libpcap uses it
+ * as a hint, but doesn't start out allocating a buffer bigger than
+ * 2 KiB, and grows the buffer as necessary, but not beyond the
+ * per-linktype maximum snapshot length. Other code might naively
+ * use it; we want to avoid writing a too-large snapshot length,
+ * in order not to cause that code problems.)
+ *
+ * We don't enforce this in pcap_set_snaplen(), but we use it internally.
+ */
+#define MAXIMUM_SNAPLEN 262144
-#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(). */
+/*
+ * Locale-independent macros for testing character types.
+ * These can be passed any integral value, without worrying about, for
+ * example, sign-extending char values, unlike the C macros.
+ */
+#define PCAP_ISDIGIT(c) \
+ ((c) >= '0' && (c) <= '9')
+#define PCAP_ISXDIGIT(c) \
+ (((c) >= '0' && (c) <= '9') || \
+ ((c) >= 'A' && (c) <= 'F') || \
+ ((c) >= 'a' && (c) <= 'f'))
+
+struct pcap_opt {
+ char *device;
+ int timeout; /* timeout for buffering */
+ u_int buffer_size;
+ int promisc;
+ int rfmon; /* monitor mode */
+ int immediate; /* immediate mode - deliver packets as soon as they arrive */
+ int nonblock; /* non-blocking mode - don't wait for packets to be delivered, return "no packets available" */
+ int tstamp_type;
+ int tstamp_precision;
+
+ /*
+ * Platform-dependent options.
+ */
+#ifdef __linux__
+ int protocol; /* protocol to use when creating PF_PACKET socket */
+#endif
+#ifdef _WIN32
+ int nocapture_local;/* disable NPF loopback */
#endif
};
+typedef int (*activate_op_t)(pcap_t *);
+typedef int (*can_set_rfmon_op_t)(pcap_t *);
+typedef int (*read_op_t)(pcap_t *, int cnt, pcap_handler, u_char *);
+typedef int (*next_packet_op_t)(pcap_t *, struct pcap_pkthdr *, u_char **);
+typedef int (*inject_op_t)(pcap_t *, const void *, int);
+typedef void (*save_current_filter_op_t)(pcap_t *, const char *);
+typedef int (*setfilter_op_t)(pcap_t *, struct bpf_program *);
+typedef int (*setdirection_op_t)(pcap_t *, pcap_direction_t);
+typedef int (*set_datalink_op_t)(pcap_t *, int);
+typedef int (*getnonblock_op_t)(pcap_t *);
+typedef int (*setnonblock_op_t)(pcap_t *, int);
+typedef int (*stats_op_t)(pcap_t *, struct pcap_stat *);
+typedef void (*breakloop_op_t)(pcap_t *);
+#ifdef _WIN32
+typedef struct pcap_stat *(*stats_ex_op_t)(pcap_t *, int *);
+typedef int (*setbuff_op_t)(pcap_t *, int);
+typedef int (*setmode_op_t)(pcap_t *, int);
+typedef int (*setmintocopy_op_t)(pcap_t *, int);
+typedef HANDLE (*getevent_op_t)(pcap_t *);
+typedef int (*oid_get_request_op_t)(pcap_t *, bpf_u_int32, void *, size_t *);
+typedef int (*oid_set_request_op_t)(pcap_t *, bpf_u_int32, const void *, size_t *);
+typedef u_int (*sendqueue_transmit_op_t)(pcap_t *, pcap_send_queue *, int);
+typedef int (*setuserbuffer_op_t)(pcap_t *, int);
+typedef int (*live_dump_op_t)(pcap_t *, char *, int, int);
+typedef int (*live_dump_ended_op_t)(pcap_t *, int);
+typedef PAirpcapHandle (*get_airpcap_handle_op_t)(pcap_t *);
+#endif
+typedef void (*cleanup_op_t)(pcap_t *);
+
+/*
+ * We put all the stuff used in the read code path at the beginning,
+ * to try to keep it together in the same cache line or lines.
+ */
struct pcap {
-#ifdef WIN32
- ADAPTER *adapter;
- LPPACKET Packet;
- int timeout;
- int nonblock;
+ /*
+ * Method to call to read packets on a live capture.
+ */
+ read_op_t read_op;
+
+ /*
+ * Method to call to read the next packet from a savefile.
+ */
+ next_packet_op_t next_packet_op;
+
+#ifdef _WIN32
+ HANDLE handle;
#else
int fd;
- int selectable_fd;
- int send_fd;
-#endif /* WIN32 */
- int snapshot;
- int linktype;
- int tzoff; /* timezone offset */
- int offset; /* offset for proper alignment */
+#endif /* _WIN32 */
+
+ /*
+ * Read buffer.
+ */
+ u_int bufsize;
+ void *buffer;
+ u_char *bp;
+ int cc;
- int break_loop; /* flag set to force break from packet-reading loop */
+ sig_atomic_t break_loop; /* flag set to force break from packet-reading loop */
-#ifdef PCAP_FDDIPAD
- int fddipad;
+ void *priv; /* private data for methods */
+
+#ifdef ENABLE_REMOTE
+ struct pcap_samp rmt_samp; /* parameters related to the sampling process. */
#endif
- struct pcap_sf sf;
- struct pcap_md md;
+ int swapped;
+ FILE *rfile; /* null if live capture, non-null if savefile */
+ u_int fddipad;
+ struct pcap *next; /* list of open pcaps that need stuff cleared on close */
/*
- * Read buffer.
+ * File version number; meaningful only for a savefile, but we
+ * keep it here so that apps that (mistakenly) ask for the
+ * version numbers will get the same zero values that they
+ * always did.
*/
- int bufsize;
- u_char *buffer;
- u_char *bp;
- int cc;
+ int version_major;
+ int version_minor;
+
+ int snapshot;
+ int linktype; /* Network linktype */
+ int linktype_ext; /* Extended information stored in the linktype field of a file */
+ int offset; /* offset for proper alignment */
+ int activated; /* true if the capture is really started */
+ int oldstyle; /* if we're opening with pcap_open_live() */
+
+ struct pcap_opt opt;
/*
* Place holder for pcap_next().
*/
u_char *pkt;
+#ifdef _WIN32
+ struct pcap_stat stat; /* used for pcap_stats_ex() */
+#endif
+
+ /* We're accepting only packets in this direction/these directions. */
+ pcap_direction_t direction;
+
+ /*
+ * Flags to affect BPF code generation.
+ */
+ int bpf_codegen_flags;
+
+#if !defined(_WIN32) && !defined(MSDOS)
+ int selectable_fd; /* FD on which select()/poll()/epoll_wait()/kevent()/etc. can be done */
+
/*
- * Methods.
+ * In case there either is no selectable FD, or there is but
+ * it doesn't necessarily work (e.g., if it doesn't get notified
+ * if the packet capture timeout expires before the buffer
+ * fills up), this points to a timeout that should be used
+ * in select()/poll()/epoll_wait()/kevent() call. The pcap_t should
+ * be put into non-blocking mode, and, if the timeout expires on
+ * the call, an attempt should be made to read packets from all
+ * pcap_t's with a required timeout, and the code must be
+ * prepared not to see any packets from the attempt.
*/
- int (*read_op)(pcap_t *, int cnt, pcap_handler, u_char *);
- int (*inject_op)(pcap_t *, const void *, size_t);
- 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 *);
+ const struct timeval *required_select_timeout;
+#endif
/*
* Placeholder for filter code if bpf not in kernel.
struct bpf_program fcode;
char errbuf[PCAP_ERRBUF_SIZE + 1];
+#ifdef _WIN32
+ char acp_errbuf[PCAP_ERRBUF_SIZE + 1]; /* buffer for local code page error strings */
+#endif
int dlt_count;
u_int *dlt_list;
+ int tstamp_type_count;
+ u_int *tstamp_type_list;
+ int tstamp_precision_count;
+ u_int *tstamp_precision_list;
struct pcap_pkthdr pcap_header; /* This is needed for the pcap_next_ex() to work */
+
+ /*
+ * More methods.
+ */
+ activate_op_t activate_op;
+ can_set_rfmon_op_t can_set_rfmon_op;
+ inject_op_t inject_op;
+ save_current_filter_op_t save_current_filter_op;
+ setfilter_op_t setfilter_op;
+ setdirection_op_t setdirection_op;
+ set_datalink_op_t set_datalink_op;
+ getnonblock_op_t getnonblock_op;
+ setnonblock_op_t setnonblock_op;
+ stats_op_t stats_op;
+ breakloop_op_t breakloop_op;
+
+ /*
+ * Routine to use as callback for pcap_next()/pcap_next_ex().
+ */
+ pcap_handler oneshot_callback;
+
+#ifdef _WIN32
+ /*
+ * These are, at least currently, specific to the Win32 NPF
+ * driver.
+ */
+ stats_ex_op_t stats_ex_op;
+ setbuff_op_t setbuff_op;
+ setmode_op_t setmode_op;
+ setmintocopy_op_t setmintocopy_op;
+ getevent_op_t getevent_op;
+ oid_get_request_op_t oid_get_request_op;
+ oid_set_request_op_t oid_set_request_op;
+ sendqueue_transmit_op_t sendqueue_transmit_op;
+ setuserbuffer_op_t setuserbuffer_op;
+ live_dump_op_t live_dump_op;
+ live_dump_ended_op_t live_dump_ended_op;
+ get_airpcap_handle_op_t get_airpcap_handle_op;
+#endif
+ cleanup_op_t cleanup_op;
};
/*
- * This is a timeval as stored in disk in a dumpfile.
+ * BPF code generation flags.
+ */
+#define BPF_SPECIAL_VLAN_HANDLING 0x00000001 /* special VLAN handling for Linux */
+
+/*
+ * This is a timeval as stored in a savefile.
* It has to use the same types everywhere, independent of the actual
- * `struct timeval'
+ * `struct timeval'; `struct timeval' has 32-bit tv_sec values on some
+ * platforms and 64-bit tv_sec values on other platforms, and writing
+ * out native `struct timeval' values would mean files could only be
+ * read on systems with the same tv_sec size as the system on which
+ * the file was written.
*/
struct pcap_timeval {
};
/*
- * How a `pcap_pkthdr' is actually stored in the dumpfile.
+ * This is a `pcap_pkthdr' as actually stored in a savefile.
*
* Do not change the format of this structure, in any way (this includes
* changes that only affect the length of fields in this structure),
*
* 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
+ * send mail to "tcpdump-workers@lists.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
* the old record header as well as files with the new record header
* (using the magic number to determine the header format).
*
- * versions of libpcap and programs that use it (such as tcpdump) will
- * be able to read your new capture file format.
+ * Then supply the changes by forking the branch at
+ *
+ * https://github.com/the-tcpdump-group/libpcap/tree/master
+ *
+ * and issuing a pull request, 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) */
+ bpf_u_int32 len; /* length of this packet (off wire) */
};
/*
- * How a `pcap_pkthdr' is actually stored in dumpfiles written
+ * How a `pcap_pkthdr' is actually stored in savefiles written
* by some patched versions of libpcap (e.g. the ones in Red
* Hat Linux 6.1 and 6.2).
*
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) */
+ bpf_u_int32 len; /* length of this packet (off wire) */
int index;
unsigned short protocol;
unsigned char pkt_type;
};
-int yylex(void);
+/*
+ * User data structure for the one-shot callback used for pcap_next()
+ * and pcap_next_ex().
+ */
+struct oneshot_userdata {
+ struct pcap_pkthdr *hdr;
+ const u_char **pkt;
+ pcap_t *pd;
+};
#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 *);
+/*
+ * Does the packet count argument to a module's read routine say
+ * "supply packets until you run out of packets"?
+ */
+#define PACKET_COUNT_IS_UNLIMITED(count) ((count) <= 0)
/*
- * 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.
+ * Routines that most pcap implementations can use for non-blocking mode.
*/
-#if defined(ultrix) || defined(__osf__) || defined(__NetBSD__)
-#define PCAP_FDDIPAD 3
+#if !defined(_WIN32) && !defined(MSDOS)
+int pcap_getnonblock_fd(pcap_t *);
+int pcap_setnonblock_fd(pcap_t *p, int);
#endif
-#ifndef HAVE_STRLCPY
-#define strlcpy(x, y, z) \
- (strncpy((x), (y), (z)), \
- ((z) <= 0 ? 0 : ((x)[(z) - 1] = '\0')), \
- strlen((y)))
-#endif
+/*
+ * Internal interfaces for "pcap_create()".
+ *
+ * "pcap_create_interface()" is the routine to do a pcap_create on
+ * a regular network interface. There are multiple implementations
+ * of this, one for each platform type (Linux, BPF, DLPI, etc.),
+ * with the one used chosen by the configure script.
+ *
+ * "pcap_create_common()" allocates and fills in a pcap_t, for use
+ * by pcap_create routines.
+ */
+pcap_t *pcap_create_interface(const char *, char *);
-#include <stdarg.h>
+/*
+ * This wrapper takes an error buffer pointer and a type to use for the
+ * private data, and calls pcap_create_common(), passing it the error
+ * buffer pointer, the size for the private data type, in bytes, and the
+ * offset of the private data from the beginning of the structure, in
+ * bytes.
+ */
+#define PCAP_CREATE_COMMON(ebuf, type) \
+ pcap_create_common(ebuf, \
+ sizeof (struct { pcap_t __common; type __private; }), \
+ offsetof (struct { pcap_t __common; type __private; }, __private))
+pcap_t *pcap_create_common(char *, size_t, size_t);
+int pcap_do_addexit(pcap_t *);
+void pcap_add_to_pcaps_to_close(pcap_t *);
+void pcap_remove_from_pcaps_to_close(pcap_t *);
+void pcap_cleanup_live_common(pcap_t *);
+int pcap_check_activated(pcap_t *);
+void pcap_breakloop_common(pcap_t *);
-#if !defined(HAVE_SNPRINTF)
-#define snprintf pcap_snprintf
-extern int snprintf (char *, size_t, const char *, ...);
+/*
+ * Internal interfaces for "pcap_findalldevs()".
+ *
+ * A pcap_if_list_t * is a reference to a list of devices.
+ *
+ * A get_if_flags_func is a platform-dependent function called to get
+ * additional interface flags.
+ *
+ * "pcap_platform_finddevs()" is the platform-dependent routine to
+ * find local network interfaces.
+ *
+ * "pcap_findalldevs_interfaces()" is a helper to find those interfaces
+ * using the "standard" mechanisms (SIOCGIFCONF, "getifaddrs()", etc.).
+ *
+ * "add_dev()" adds an entry to a pcap_if_list_t.
+ *
+ * "find_dev()" tries to find a device, by name, in a pcap_if_list_t.
+ *
+ * "find_or_add_dev()" checks whether a device is already in a pcap_if_list_t
+ * and, if not, adds an entry for it.
+ */
+struct pcap_if_list;
+typedef struct pcap_if_list pcap_if_list_t;
+typedef int (*get_if_flags_func)(const char *, bpf_u_int32 *, char *);
+int pcap_platform_finddevs(pcap_if_list_t *, char *);
+#if !defined(_WIN32) && !defined(MSDOS)
+int pcap_findalldevs_interfaces(pcap_if_list_t *, char *,
+ int (*)(const char *), get_if_flags_func);
#endif
+pcap_if_t *find_or_add_dev(pcap_if_list_t *, const char *, bpf_u_int32,
+ get_if_flags_func, const char *, char *);
+pcap_if_t *find_dev(pcap_if_list_t *, const char *);
+pcap_if_t *add_dev(pcap_if_list_t *, const char *, bpf_u_int32, const char *,
+ char *);
+int add_addr_to_dev(pcap_if_t *, struct sockaddr *, size_t,
+ struct sockaddr *, size_t, struct sockaddr *, size_t,
+ struct sockaddr *dstaddr, size_t, char *errbuf);
+#ifndef _WIN32
+pcap_if_t *find_or_add_if(pcap_if_list_t *, const char *, bpf_u_int32,
+ get_if_flags_func, char *);
+int add_addr_to_if(pcap_if_list_t *, const char *, bpf_u_int32,
+ get_if_flags_func,
+ struct sockaddr *, size_t, struct sockaddr *, size_t,
+ struct sockaddr *, size_t, struct sockaddr *, size_t, char *);
+#endif
+
+/*
+ * Internal interfaces for "pcap_open_offline()" and other savefile
+ * I/O routines.
+ *
+ * "pcap_open_offline_common()" allocates and fills in a pcap_t, for use
+ * by pcap_open_offline routines.
+ *
+ * "pcap_adjust_snapshot()" adjusts the snapshot to be non-zero and
+ * fit within an int.
+ *
+ * "sf_cleanup()" closes the file handle associated with a pcap_t, if
+ * appropriate, and frees all data common to all modules for handling
+ * savefile types.
+ *
+ * "charset_fopen()", in UTF-8 mode on Windows, does an fopen() that
+ * treats the pathname as being in UTF-8, rather than the local
+ * code page, on Windows.
+ */
-#if !defined(HAVE_VSNPRINTF)
-#define vsnprintf pcap_vsnprintf
-extern int vsnprintf (char *, size_t, const char *, va_list ap);
+/*
+ * This wrapper takes an error buffer pointer and a type to use for the
+ * private data, and calls pcap_create_common(), passing it the error
+ * buffer pointer, the size for the private data type, in bytes, and the
+ * offset of the private data from the beginning of the structure, in
+ * bytes.
+ */
+#define PCAP_OPEN_OFFLINE_COMMON(ebuf, type) \
+ pcap_open_offline_common(ebuf, \
+ sizeof (struct { pcap_t __common; type __private; }), \
+ offsetof (struct { pcap_t __common; type __private; }, __private))
+pcap_t *pcap_open_offline_common(char *ebuf, size_t total_size,
+ size_t private_data);
+bpf_u_int32 pcap_adjust_snapshot(bpf_u_int32 linktype, bpf_u_int32 snaplen);
+void sf_cleanup(pcap_t *p);
+#ifdef _WIN32
+FILE *charset_fopen(const char *path, const char *mode);
+#else
+/*
+ * On other OSes, just use Boring Old fopen().
+ */
+#define charset_fopen(path, mode) fopen((path), (mode))
#endif
/*
- * Routines that most pcap implementations can use for non-blocking mode.
+ * Internal interfaces for loading code at run time.
*/
-#ifndef WIN32
-int pcap_getnonblock_fd(pcap_t *, char *);
-int pcap_setnonblock_fd(pcap_t *p, int, char *);
+#ifdef _WIN32
+#define pcap_code_handle_t HMODULE
+#define pcap_funcptr_t FARPROC
+
+pcap_code_handle_t pcap_load_code(const char *);
+pcap_funcptr_t pcap_find_function(pcap_code_handle_t, const char *);
#endif
-void pcap_close_common(pcap_t *);
+/*
+ * Internal interfaces for doing user-mode filtering of packets and
+ * validating filter programs.
+ */
+/*
+ * Auxiliary data, for use when interpreting a filter intended for the
+ * Linux kernel when the kernel rejects the filter (requiring us to
+ * run it in userland). It contains VLAN tag information.
+ */
+struct pcap_bpf_aux_data {
+ u_short vlan_tag_present;
+ u_short vlan_tag;
+};
+
+/*
+ * Filtering routine that takes the auxiliary data as an additional
+ * argument.
+ */
+u_int pcap_filter_with_aux_data(const struct bpf_insn *,
+ const u_char *, u_int, u_int, const struct pcap_bpf_aux_data *);
/*
- * 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..
+ * Filtering routine that doesn't.
+ */
+u_int pcap_filter(const struct bpf_insn *, const u_char *, u_int, u_int);
+
+/*
+ * Routine to validate a BPF program.
+ */
+int pcap_validate_filter(const struct bpf_insn *, int);
+
+/*
+ * Internal interfaces for both "pcap_create()" and routines that
+ * open savefiles.
*
- * "pcap_add_if()" adds an interface to the list of interfaces.
+ * "pcap_oneshot()" is the standard one-shot callback for "pcap_next()"
+ * and "pcap_next_ex()".
*/
-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
+void pcap_oneshot(u_char *, const struct pcap_pkthdr *, const u_char *);
int install_bpf_program(pcap_t *, struct bpf_program *);
int pcap_strcasecmp(const char *, const char *);
+/*
+ * Internal interfaces for pcap_createsrcstr and pcap_parsesrcstr with
+ * the additional bit of information regarding SSL support (rpcap:// vs.
+ * rpcaps://).
+ */
+int pcap_createsrcstr_ex(char *, int, const char *, const char *,
+ const char *, unsigned char, char *);
+int pcap_parsesrcstr_ex(const char *, int *, char *, char *,
+ char *, unsigned char *, char *);
+
+#ifdef YYDEBUG
+extern int pcap_debug;
+#endif
+
#ifdef __cplusplus
}
#endif
projects / libpcap / blobdiff