#ifndef pcap_int_h
#define pcap_int_h
+#include <signal.h>
+
#include <pcap/pcap.h>
+#include "varattrs.h"
+#include "fmtutils.h"
+
+/*
+ * Version string.
+ * Uses PACKAGE_VERSION from config.h.
+ */
+#define PCAP_VERSION_STRING "libpcap version " PACKAGE_VERSION
+
#ifdef __cplusplus
extern "C" {
#endif
-#ifdef WIN32
-#include <Packet32.h>
-extern CRITICAL_SECTION g_PcapCompileCriticalSection;
-#endif /* WIN32 */
-
#ifdef MSDOS
-#include <fcntl.h>
-#include <io.h>
+ #include <fcntl.h>
+ #include <io.h>
#endif
-#if (defined(_MSC_VER) && (_MSC_VER <= 1200)) /* we are compiling with Visual Studio 6, that doesn't support the LL suffix*/
-
-/*
- * Swap byte ordering of unsigned long long timestamp on a big endian
- * machine.
- */
-#define SWAPLL(ull) ((ull & 0xff00000000000000) >> 56) | \
- ((ull & 0x00ff000000000000) >> 40) | \
- ((ull & 0x0000ff0000000000) >> 24) | \
- ((ull & 0x000000ff00000000) >> 8) | \
- ((ull & 0x00000000ff000000) << 8) | \
- ((ull & 0x0000000000ff0000) << 24) | \
- ((ull & 0x000000000000ff00) << 40) | \
- ((ull & 0x00000000000000ff) << 56)
-
-#else /* A recent Visual studio compiler or not VC */
-
/*
* Swap byte ordering of unsigned long long timestamp on a big endian
* machine.
*/
-#define SWAPLL(ull) ((ull & 0xff00000000000000LL) >> 56) | \
- ((ull & 0x00ff000000000000LL) >> 40) | \
- ((ull & 0x0000ff0000000000LL) >> 24) | \
- ((ull & 0x000000ff00000000LL) >> 8) | \
- ((ull & 0x00000000ff000000LL) << 8) | \
- ((ull & 0x0000000000ff0000LL) << 24) | \
- ((ull & 0x000000000000ff00LL) << 40) | \
- ((ull & 0x00000000000000ffLL) << 56)
-
-#endif /* _MSC_VER */
+#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)
/*
* Maximum snapshot length.
* 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.
+ * 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
struct pcap_opt {
- char *source;
+ char *device;
int timeout; /* timeout for buffering */
- int buffer_size;
+ 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 *, size_t);
+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 *, char *);
-typedef int (*setnonblock_op_t)(pcap_t *, int, char *);
+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 *);
-#ifdef WIN32
+#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 Adapter *(*getadapter_op_t)(pcap_t *);
+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 *);
read_op_t read_op;
/*
- * Method to call to read to read packets from a savefile.
+ * Method to call to read the next packet from a savefile.
*/
- int (*next_packet_op)(pcap_t *, struct pcap_pkthdr *, u_char **);
+ next_packet_op_t next_packet_op;
-#ifdef WIN32
- ADAPTER *adapter;
- LPPACKET Packet;
- int nonblock;
+#ifdef _WIN32
+ HANDLE handle;
#else
int fd;
- int selectable_fd;
-#endif /* WIN32 */
+#endif /* _WIN32 */
/*
* Read buffer.
*/
- int bufsize;
- u_char *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 */
void *priv; /* private data for methods */
+#ifdef ENABLE_REMOTE
+ struct pcap_samp rmt_samp; /* parameters related to the sampling process. */
+#endif
+
int swapped;
FILE *rfile; /* null if live capture, non-null if savefile */
- int fddipad;
+ u_int fddipad;
struct pcap *next; /* list of open pcaps that need stuff cleared on close */
/*
*/
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 */
+
+ /*
+ * 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.
+ */
+ struct timeval *required_select_timeout;
+#endif
+
+ /*
* Placeholder for filter code if bpf not in kernel.
*/
struct bpf_program fcode;
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;
*/
pcap_handler oneshot_callback;
-#ifdef WIN32
+#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;
- getadapter_op_t getadapter_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;
};
/*
+ * 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' has 32-bit tv_sec values on some
pcap_t *pd;
};
-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 *);
-
-#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
+#include "portability.h"
/*
* Does the packet count argument to a module's read routine say
/*
* Routines that most pcap implementations can use for non-blocking mode.
*/
-#if !defined(WIN32) && !defined(MSDOS)
-int pcap_getnonblock_fd(pcap_t *, char *);
-int pcap_setnonblock_fd(pcap_t *p, int, char *);
+#if !defined(_WIN32) && !defined(MSDOS)
+int pcap_getnonblock_fd(pcap_t *);
+int pcap_setnonblock_fd(pcap_t *p, int);
#endif
/*
* by pcap_create routines.
*/
pcap_t *pcap_create_interface(const char *, char *);
-pcap_t *pcap_create_common(const char *, char *, size_t);
+pcap_t *pcap_create_common(char *, 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_not_initialized(pcap_t *);
int pcap_check_activated(pcap_t *);
/*
* Internal interfaces for "pcap_findalldevs()".
*
- * "pcap_findalldevs_interfaces()" finds interfaces using the
- * "standard" mechanisms (SIOCGIFCONF, "getifaddrs()", etc.).
+ * 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.).
*
- * "pcap_platform_finddevs()" is a platform-dependent routine to
- * add devices not found by the "standard" mechanisms.
+ * "add_dev()" adds an entry to a pcap_if_list_t.
*
- * "pcap_add_if()" adds an interface to the list of interfaces, for
- * use by various "find interfaces" routines.
+ * "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.
*/
-int pcap_findalldevs_interfaces(pcap_if_t **, char *);
-int pcap_platform_finddevs(pcap_if_t **, char *);
-int add_addr_to_iflist(pcap_if_t **, const char *, u_int, struct sockaddr *,
- size_t, struct sockaddr *, size_t, struct sockaddr *, size_t,
- struct sockaddr *, size_t, char *);
+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);
-int pcap_add_if(pcap_if_t **, const 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 *);
+#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()".
* "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.
*/
pcap_t *pcap_open_offline_common(char *ebuf, size_t size);
+bpf_u_int32 pcap_adjust_snapshot(bpf_u_int32 linktype, bpf_u_int32 snaplen);
void sf_cleanup(pcap_t *p);
/*
+ * 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 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 bpf_filter_with_aux_data(const struct bpf_insn *,
+ const u_char *, u_int, u_int, const struct bpf_aux_data *);
+
+/*
* Internal interfaces for both "pcap_create()" and routines that
* open savefiles.
*
*/
void pcap_oneshot(u_char *, const struct pcap_pkthdr *, const u_char *);
-#ifdef WIN32
-char *pcap_win32strerror(void);
-#endif
-
int install_bpf_program(pcap_t *, struct bpf_program *);
int pcap_strcasecmp(const char *, const char *);
+#ifdef YYDEBUG
+extern int pcap_debug;
+#endif
+
#ifdef __cplusplus
}
#endif
projects / platform / upstream / libpcap.git / blobdiff