1 /* $NetBSD: pcap-int.h,v 1.10 2026/03/18 23:43:20 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995, 1996 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the Computer Systems 18 * Engineering Group at Lawrence Berkeley Laboratory. 19 * 4. Neither the name of the University nor of the Laboratory may be used 20 * to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef pcap_int_h 37 #define pcap_int_h 38 39 #include <stddef.h> 40 41 #include <signal.h> 42 43 #include <pcap/pcap.h> 44 45 #ifdef MSDOS 46 #include <fcntl.h> 47 #include <io.h> 48 #endif 49 50 #include "varattrs.h" 51 #include "fmtutils.h" 52 53 #include <stdarg.h> 54 55 #include "portability.h" 56 57 #define PCAP_DEBUG {printf(" [%s:%d %s] ", __FILE__, __LINE__, __func__); fflush(stdout);} 58 59 /* 60 * If we're compiling with Visual Studio, make sure we have at least 61 * VS 2015 or later, so we have sufficient C99 support. 62 * 63 * XXX - verify that we have at least C99 support on UN*Xes? 64 * 65 * What about MinGW or various DOS toolchains? We're currently assuming 66 * sufficient C99 support there. 67 */ 68 #if defined(_MSC_VER) 69 /* 70 * Compiler is MSVC. Make sure we have VS 2015 or later. 71 */ 72 #if _MSC_VER < 1900 73 #error "Building libpcap requires VS 2015 or later" 74 #endif 75 #endif 76 77 /* 78 * Version string trailer. 79 * Uses SIZEOF_TIME_T from config.h. 80 * (There's no need to announce the pointer size; if it doesn't 81 * match the pointer size in code linked with libpcap, either 82 * build-time linking or run-time linking will fail.) 83 */ 84 #if SIZEOF_TIME_T == 8 85 #define PCAP_SIZEOF_TIME_T_BITS_STRING "64" 86 #elif SIZEOF_TIME_T == 4 87 #define PCAP_SIZEOF_TIME_T_BITS_STRING "32" 88 #else 89 #error Unknown time_t size 90 #endif 91 92 /* 93 * Version string. 94 * Uses PACKAGE_VERSION from config.h and PCAP_SIZEOF_TIME_T_BITS_STRING. 95 */ 96 #define PCAP_VERSION_STRING \ 97 "libpcap version " PACKAGE_VERSION " (" PCAP_SIZEOF_TIME_T_BITS_STRING "-bit time_t)" 98 #define PCAP_VERSION_STRING_WITH_ADDITIONAL_INFO(additional_info) \ 99 "libpcap version " PACKAGE_VERSION " (" PCAP_SIZEOF_TIME_T_BITS_STRING "-bit time_t, " additional_info ")" 100 101 #ifdef __cplusplus 102 extern "C" { 103 #endif 104 105 /* 106 * If pcapint_new_api is set, we disable pcap_lookupdev(), because: 107 * 108 * it's not thread-safe, and is marked as deprecated, on all 109 * platforms; 110 * 111 * on Windows, it may return UTF-16LE strings, which the program 112 * might then pass to pcap_create() (or to pcap_open_live(), which 113 * then passes them to pcap_create()), requiring pcap_create() to 114 * check for UTF-16LE strings using a hack, and that hack 1) 115 * *cannot* be 100% reliable and 2) runs the risk of going past the 116 * end of the string. 117 * 118 * We keep it around in legacy mode for compatibility. 119 * 120 * We also disable the aforementioned hack in pcap_create(). 121 */ 122 extern int pcapint_new_api; 123 124 /* 125 * If pcapint_utf_8_mode is set, on Windows we treat strings as UTF-8. 126 * 127 * On UN*Xes, we assume all strings are and should be in UTF-8, regardless 128 * of the setting of this flag. 129 */ 130 extern int pcapint_utf_8_mode; 131 132 /* 133 * Swap byte ordering of unsigned long long timestamp on a big endian 134 * machine. 135 */ 136 #define SWAPLL(ull) ((ull & 0xff00000000000000ULL) >> 56) | \ 137 ((ull & 0x00ff000000000000ULL) >> 40) | \ 138 ((ull & 0x0000ff0000000000ULL) >> 24) | \ 139 ((ull & 0x000000ff00000000ULL) >> 8) | \ 140 ((ull & 0x00000000ff000000ULL) << 8) | \ 141 ((ull & 0x0000000000ff0000ULL) << 24) | \ 142 ((ull & 0x000000000000ff00ULL) << 40) | \ 143 ((ull & 0x00000000000000ffULL) << 56) 144 145 /* 146 * Maximum snapshot length. 147 * 148 * Somewhat arbitrary, but chosen to be: 149 * 150 * 1) big enough for maximum-size Linux loopback packets (65549) 151 * and some USB packets captured with USBPcap: 152 * 153 * https://desowin.org/usbpcap/ 154 * 155 * (> 131072, < 262144) 156 * 157 * and 158 * 159 * 2) small enough not to cause attempts to allocate huge amounts of 160 * memory; some applications might use the snapshot length in a 161 * savefile header to control the size of the buffer they allocate, 162 * so a size of, say, 2^31-1 might not work well. (libpcap uses it 163 * as a hint, but doesn't start out allocating a buffer bigger than 164 * 2 KiB, and grows the buffer as necessary, but not beyond the 165 * per-linktype maximum snapshot length. Other code might naively 166 * use it; we want to avoid writing a too-large snapshot length, 167 * in order not to cause that code problems.) 168 * 169 * We don't enforce this in pcap_set_snaplen(), but we use it internally. 170 */ 171 #define MAXIMUM_SNAPLEN 262144 172 173 /* 174 * Locale-independent macros for testing character types. 175 * These can be passed any integral value, without worrying about, for 176 * example, sign-extending char values, unlike the C macros. 177 */ 178 #define PCAP_ISDIGIT(c) \ 179 ((c) >= '0' && (c) <= '9') 180 #define PCAP_ISXDIGIT(c) \ 181 (((c) >= '0' && (c) <= '9') || \ 182 ((c) >= 'A' && (c) <= 'F') || \ 183 ((c) >= 'a' && (c) <= 'f')) 184 185 struct pcap_opt { 186 char *device; 187 int timeout; /* timeout for buffering */ 188 u_int buffer_size; 189 int promisc; 190 int rfmon; /* monitor mode */ 191 int immediate; /* immediate mode - deliver packets as soon as they arrive */ 192 int nonblock; /* non-blocking mode - don't wait for packets to be delivered, return "no packets available" */ 193 int tstamp_type; 194 int tstamp_precision; 195 196 /* 197 * Platform-dependent options. 198 */ 199 #ifdef __linux__ 200 int protocol; /* protocol to use when creating PF_PACKET socket */ 201 #endif 202 #ifdef _WIN32 203 int nocapture_local;/* disable NPF loopback */ 204 #endif 205 }; 206 207 typedef int (*activate_op_t)(pcap_t *); 208 typedef int (*can_set_rfmon_op_t)(pcap_t *); 209 typedef int (*read_op_t)(pcap_t *, int cnt, pcap_handler, u_char *); 210 typedef int (*next_packet_op_t)(pcap_t *, struct pcap_pkthdr *, u_char **); 211 typedef int (*inject_op_t)(pcap_t *, const void *, size_t); 212 typedef void (*save_current_filter_op_t)(pcap_t *, const char *); 213 typedef int (*setfilter_op_t)(pcap_t *, struct bpf_program *); 214 typedef int (*setdirection_op_t)(pcap_t *, pcap_direction_t); 215 typedef int (*set_datalink_op_t)(pcap_t *, int); 216 typedef int (*getnonblock_op_t)(pcap_t *); 217 typedef int (*setnonblock_op_t)(pcap_t *, int); 218 typedef int (*stats_op_t)(pcap_t *, struct pcap_stat *); 219 typedef void (*breakloop_op_t)(pcap_t *); 220 #ifdef _WIN32 221 typedef struct pcap_stat *(*stats_ex_op_t)(pcap_t *, int *); 222 typedef int (*setbuff_op_t)(pcap_t *, int); 223 typedef int (*setmode_op_t)(pcap_t *, int); 224 typedef int (*setmintocopy_op_t)(pcap_t *, int); 225 typedef HANDLE (*getevent_op_t)(pcap_t *); 226 typedef int (*oid_get_request_op_t)(pcap_t *, bpf_u_int32, void *, size_t *); 227 typedef int (*oid_set_request_op_t)(pcap_t *, bpf_u_int32, const void *, size_t *); 228 typedef u_int (*sendqueue_transmit_op_t)(pcap_t *, pcap_send_queue *, int); 229 typedef int (*setuserbuffer_op_t)(pcap_t *, int); 230 typedef int (*live_dump_op_t)(pcap_t *, char *, int, int); 231 typedef int (*live_dump_ended_op_t)(pcap_t *, int); 232 typedef PAirpcapHandle (*get_airpcap_handle_op_t)(pcap_t *); 233 #endif 234 typedef void (*cleanup_op_t)(pcap_t *); 235 236 /* 237 * We put all the stuff used in the read code path at the beginning, 238 * to try to keep it together in the same cache line or lines. 239 */ 240 struct pcap { 241 /* 242 * Method to call to read packets on a live capture. 243 */ 244 read_op_t read_op; 245 246 /* 247 * Method to call to read the next packet from a savefile. 248 */ 249 next_packet_op_t next_packet_op; 250 251 #ifdef _WIN32 252 HANDLE handle; 253 #else 254 int fd; 255 #endif /* _WIN32 */ 256 257 /* 258 * Read buffer. 259 */ 260 u_int bufsize; 261 void *buffer; 262 u_char *bp; 263 int cc; 264 265 sig_atomic_t break_loop; /* flag set to force break from packet-reading loop */ 266 267 void *priv; /* private data for methods */ 268 269 // #ifdef ENABLE_REMOTE 270 struct pcap_samp rmt_samp; /* parameters related to the sampling process. */ 271 // #endif 272 273 int swapped; 274 FILE *rfile; /* null if live capture, non-null if savefile */ 275 u_int fddipad; 276 struct pcap *next; /* list of open pcaps that need stuff cleared on close */ 277 278 /* 279 * File version number; meaningful only for a savefile, but we 280 * keep it here so that apps that (mistakenly) ask for the 281 * version numbers will get the same zero values that they 282 * always did. 283 */ 284 int version_major; 285 int version_minor; 286 287 int snapshot; 288 int linktype; /* Network linktype */ 289 int linktype_ext; /* Extended information stored in the linktype field of a file */ 290 int offset; /* offset for proper alignment */ 291 int activated; /* true if the capture is really started */ 292 int oldstyle; /* if we're opening with pcap_open_live() */ 293 294 struct pcap_opt opt; 295 296 /* 297 * Place holder for pcap_next(). 298 */ 299 u_char *pkt; 300 301 #ifdef _WIN32 302 struct pcap_stat stat; /* used for pcap_stats_ex() */ 303 #endif 304 305 /* We're accepting only packets in this direction/these directions. */ 306 pcap_direction_t direction; 307 308 /* 309 * Flags to affect BPF code generation. 310 */ 311 int bpf_codegen_flags; 312 313 #if !defined(_WIN32) && !defined(MSDOS) 314 int selectable_fd; /* FD on which select()/poll()/epoll_wait()/kevent()/etc. can be done */ 315 316 /* 317 * In case there either is no selectable FD, or there is but 318 * it doesn't necessarily work (e.g., if it doesn't get notified 319 * if the packet capture timeout expires before the buffer 320 * fills up), this points to a timeout that should be used 321 * in select()/poll()/epoll_wait()/kevent() call. The pcap_t should 322 * be put into non-blocking mode, and, if the timeout expires on 323 * the call, an attempt should be made to read packets from all 324 * pcap_t's with a required timeout, and the code must be 325 * prepared not to see any packets from the attempt. 326 */ 327 const struct timeval *required_select_timeout; 328 #endif 329 330 /* 331 * Placeholder for filter code if bpf not in kernel. 332 */ 333 struct bpf_program fcode; 334 335 char errbuf[PCAP_ERRBUF_SIZE + 1]; 336 #ifdef _WIN32 337 char acp_errbuf[PCAP_ERRBUF_SIZE + 1]; /* buffer for local code page error strings */ 338 #endif 339 int dlt_count; 340 u_int *dlt_list; 341 int tstamp_type_count; 342 u_int *tstamp_type_list; 343 int tstamp_precision_count; 344 u_int *tstamp_precision_list; 345 346 struct pcap_pkthdr pcap_header; /* This is needed for the pcap_next_ex() to work */ 347 348 /* 349 * More methods. 350 */ 351 activate_op_t activate_op; 352 can_set_rfmon_op_t can_set_rfmon_op; 353 inject_op_t inject_op; 354 save_current_filter_op_t save_current_filter_op; 355 setfilter_op_t setfilter_op; 356 setdirection_op_t setdirection_op; 357 set_datalink_op_t set_datalink_op; 358 getnonblock_op_t getnonblock_op; 359 setnonblock_op_t setnonblock_op; 360 stats_op_t stats_op; 361 breakloop_op_t breakloop_op; 362 363 /* 364 * Routine to use as callback for pcap_next()/pcap_next_ex(). 365 */ 366 pcap_handler oneshot_callback; 367 368 #ifdef _WIN32 369 /* 370 * These are, at least currently, specific to the Win32 NPF 371 * driver. 372 */ 373 stats_ex_op_t stats_ex_op; 374 setbuff_op_t setbuff_op; 375 setmode_op_t setmode_op; 376 setmintocopy_op_t setmintocopy_op; 377 getevent_op_t getevent_op; 378 oid_get_request_op_t oid_get_request_op; 379 oid_set_request_op_t oid_set_request_op; 380 sendqueue_transmit_op_t sendqueue_transmit_op; 381 setuserbuffer_op_t setuserbuffer_op; 382 live_dump_op_t live_dump_op; 383 live_dump_ended_op_t live_dump_ended_op; 384 get_airpcap_handle_op_t get_airpcap_handle_op; 385 #endif 386 cleanup_op_t cleanup_op; 387 }; 388 389 /* 390 * BPF code generation flags. 391 */ 392 #define BPF_SPECIAL_VLAN_HANDLING 0x00000001 /* special VLAN handling for Linux */ 393 394 /* 395 * User data structure for the one-shot callback used for pcap_next() 396 * and pcap_next_ex(). 397 */ 398 struct oneshot_userdata { 399 struct pcap_pkthdr *hdr; 400 const u_char **pkt; 401 pcap_t *pd; 402 }; 403 404 #ifndef min 405 #define min(a, b) ((a) > (b) ? (b) : (a)) 406 #endif 407 408 int pcapint_offline_read(pcap_t *, int, pcap_handler, u_char *); 409 410 /* 411 * Does the packet count argument to a module's read routine say 412 * "supply packets until you run out of packets"? 413 */ 414 #define PACKET_COUNT_IS_UNLIMITED(count) ((count) <= 0) 415 416 /* 417 * Routines that most pcap implementations can use for non-blocking mode. 418 */ 419 #if !defined(_WIN32) && !defined(MSDOS) 420 int pcapint_getnonblock_fd(pcap_t *); 421 int pcapint_setnonblock_fd(pcap_t *p, int); 422 #endif 423 424 /* 425 * Internal interfaces for "pcap_create()". 426 * 427 * "pcapint_create_interface()" is the routine to do a pcap_create on 428 * a regular network interface. There are multiple implementations 429 * of this, one for each platform type (Linux, BPF, DLPI, etc.), 430 * with the one used chosen by the configure script. 431 * 432 * "pcapint_create_common()" allocates and fills in a pcap_t, for use 433 * by pcap_create routines. 434 */ 435 pcap_t *pcapint_create_interface(const char *, char *); 436 /* 437 * A format string for something-only libpcap builds, which use a stub 438 * implementation of pcapint_create_interface(). It contains the substring 439 * "No such device" (one of the standard descriptions of ENODEV) -- this way 440 * tcpdump can detect a particular error condition even though pcap_create() 441 * returns NULL for all errors. 442 */ 443 #define PCAP_ENODEV_MESSAGE "No such device (this build of libpcap supports %s devices only)." 444 445 /* 446 * This wrapper takes an error buffer pointer and a type to use for the 447 * private data, and calls pcapint_create_common(), passing it the error 448 * buffer pointer, the size for the private data type, in bytes, and the 449 * offset of the private data from the beginning of the structure, in 450 * bytes. 451 */ 452 #define PCAP_CREATE_COMMON(ebuf, type) \ 453 pcapint_create_common(ebuf, \ 454 sizeof (struct { pcap_t __common; type __private; }), \ 455 offsetof (struct { pcap_t __common; type __private; }, __private)) 456 pcap_t *pcapint_create_common(char *, size_t, size_t); 457 int pcapint_do_addexit(pcap_t *); 458 void pcapint_add_to_pcaps_to_close(pcap_t *); 459 void pcapint_remove_from_pcaps_to_close(pcap_t *); 460 void pcapint_cleanup_live_common(pcap_t *); 461 int pcapint_check_activated(pcap_t *); 462 void pcapint_breakloop_common(pcap_t *); 463 464 /* 465 * Internal interfaces for "pcap_findalldevs()". 466 * 467 * A pcap_if_list_t * is a reference to a list of devices. 468 * 469 * A get_if_flags_func is a platform-dependent function called to get 470 * additional interface flags. 471 * 472 * "pcapint_platform_finddevs()" is the platform-dependent routine to 473 * find local network interfaces. 474 * 475 * "pcapint_findalldevs_interfaces()" is a helper to find those interfaces 476 * using the "standard" mechanisms (SIOCGIFCONF, "getifaddrs()", etc.). 477 * 478 * "pcapint_add_dev()" adds an entry to a pcap_if_list_t. 479 * 480 * "pcap_add_any_dev()" adds an entry for the "any" device to a pcap_if_list_t. 481 * 482 * "pcapint_find_dev()" tries to find a device, by name, in a pcap_if_list_t. 483 * 484 * "pcapint_find_or_add_dev()" checks whether a device is already in a 485 * pcap_if_list_t and, if not, adds an entry for it. 486 */ 487 struct pcap_if_list; 488 typedef struct pcap_if_list pcap_if_list_t; 489 typedef int (*get_if_flags_func)(const char *, bpf_u_int32 *, char *); 490 int pcapint_platform_finddevs(pcap_if_list_t *, char *); 491 #if !defined(_WIN32) && !defined(MSDOS) 492 int pcapint_findalldevs_interfaces(pcap_if_list_t *, char *, 493 int (*)(const char *), get_if_flags_func); 494 #endif 495 pcap_if_t *pcapint_find_or_add_dev(pcap_if_list_t *, const char *, bpf_u_int32, 496 get_if_flags_func, const char *, char *); 497 pcap_if_t *pcapint_find_dev(pcap_if_list_t *, const char *); 498 pcap_if_t *pcapint_add_dev(pcap_if_list_t *, const char *, bpf_u_int32, 499 const char *, char *); 500 pcap_if_t *pcap_add_any_dev(pcap_if_list_t *, char *); 501 int pcapint_add_addr_to_dev(pcap_if_t *, struct sockaddr *, size_t, 502 struct sockaddr *, size_t, struct sockaddr *, size_t, 503 struct sockaddr *dstaddr, size_t, char *errbuf); 504 #ifndef _WIN32 505 pcap_if_t *pcapint_find_or_add_if(pcap_if_list_t *, const char *, uint64_t, 506 get_if_flags_func, char *); 507 int pcapint_add_addr_to_if(pcap_if_list_t *, const char *, uint64_t, 508 get_if_flags_func, 509 struct sockaddr *, size_t, struct sockaddr *, size_t, 510 struct sockaddr *, size_t, struct sockaddr *, size_t, char *); 511 #endif 512 513 /* 514 * Internal interfaces for "pcap_open_offline()" and other savefile 515 * I/O routines. 516 * 517 * "pcapint_open_offline_common()" allocates and fills in a pcap_t, for use 518 * by pcap_open_offline routines. 519 * 520 * "pcapint_adjust_snapshot()" adjusts the snapshot to be non-zero and 521 * fit within an int. 522 * 523 * "pcapint_sf_cleanup()" closes the file handle associated with a pcap_t, if 524 * appropriate, and frees all data common to all modules for handling 525 * savefile types. 526 * 527 * "pcapint_charset_fopen()", in UTF-8 mode on Windows, does an fopen() that 528 * treats the pathname as being in UTF-8, rather than the local 529 * code page, on Windows. 530 */ 531 532 /* 533 * This wrapper takes an error buffer pointer and a type to use for the 534 * private data, and calls pcapint_create_common(), passing it the error 535 * buffer pointer, the size for the private data type, in bytes, and the 536 * offset of the private data from the beginning of the structure, in 537 * bytes. 538 */ 539 #define PCAP_OPEN_OFFLINE_COMMON(ebuf, type) \ 540 pcapint_open_offline_common(ebuf, \ 541 sizeof (struct { pcap_t __common; type __private; }), \ 542 offsetof (struct { pcap_t __common; type __private; }, __private)) 543 pcap_t *pcapint_open_offline_common(char *ebuf, size_t total_size, 544 size_t private_data); 545 bpf_u_int32 pcapint_adjust_snapshot(bpf_u_int32 linktype, bpf_u_int32 snaplen); 546 void pcapint_sf_cleanup(pcap_t *p); 547 #ifdef _WIN32 548 FILE *pcapint_charset_fopen(const char *path, const char *mode); 549 #else 550 /* 551 * On other OSes, just use Boring Old fopen(). 552 */ 553 #define pcapint_charset_fopen(path, mode) fopen((path), (mode)) 554 #endif 555 556 /* 557 * Internal interfaces for loading code at run time. 558 */ 559 #ifdef _WIN32 560 #define pcap_code_handle_t HMODULE 561 562 pcap_code_handle_t pcapint_load_code(const char *); 563 void *pcapint_find_function(pcap_code_handle_t, const char *); 564 #endif 565 566 /* 567 * Internal interfaces for doing user-mode filtering of packets and 568 * validating filter programs. 569 */ 570 #ifndef __NetBSD__ 571 /* 572 * Auxiliary data, for use when interpreting a filter intended for the 573 * Linux kernel when the kernel rejects the filter (requiring us to 574 * run it in userland). It contains VLAN tag information. 575 */ 576 struct pcap_bpf_aux_data { 577 u_short vlan_tag_present; 578 u_short vlan_tag; 579 }; 580 #else 581 #define pcap_bpf_aux_data bpf_aux_data 582 #endif 583 584 /* 585 * Filtering routine that takes the auxiliary data as an additional 586 * argument. 587 */ 588 u_int pcapint_filter_with_aux_data(const struct bpf_insn *, 589 const u_char *, u_int, u_int, const struct pcap_bpf_aux_data *); 590 591 /* 592 * Filtering routine that doesn't. 593 */ 594 u_int pcapint_filter(const struct bpf_insn *, const u_char *, u_int, u_int); 595 596 /* 597 * Routine to validate a BPF program. 598 */ 599 int pcapint_validate_filter(const struct bpf_insn *, int); 600 601 /* 602 * Internal interfaces for both "pcap_create()" and routines that 603 * open savefiles. 604 * 605 * "pcapint_oneshot()" is the standard one-shot callback for "pcap_next()" 606 * and "pcap_next_ex()". 607 */ 608 void pcapint_oneshot(u_char *, const struct pcap_pkthdr *, const u_char *); 609 610 int pcapint_install_bpf_program(pcap_t *, struct bpf_program *); 611 612 int pcapint_strcasecmp(const char *, const char *); 613 614 /* 615 * Internal interfaces for pcap_createsrcstr and pcap_parsesrcstr with 616 * the additional bit of information regarding SSL support (rpcap:// vs. 617 * rpcaps://). 618 */ 619 int pcapint_createsrcstr_ex(char *, int, const char *, const char *, 620 const char *, unsigned char, char *); 621 int pcapint_parsesrcstr_ex(const char *, int *, char *, char *, 622 char *, unsigned char *, char *); 623 624 #ifdef YYDEBUG 625 extern int pcap_debug; 626 #endif 627 628 #ifdef __cplusplus 629 } 630 #endif 631 632 #endif 633
Indexes created Tue May 26 00:24:38 UTC 2026