From 5779dabf1bcc73045f0168dfb4ff50af3eca292a Mon Sep 17 00:00:00 2001 From: rpaulo Date: Fri, 20 Mar 2009 13:44:43 +0000 Subject: Flatten vendor/libpcap and remove keyword expansion. --- contrib/libpcap/pcap.c | 918 ------------------------------------------------- 1 file changed, 918 deletions(-) delete mode 100644 contrib/libpcap/pcap.c (limited to 'contrib/libpcap/pcap.c') diff --git a/contrib/libpcap/pcap.c b/contrib/libpcap/pcap.c deleted file mode 100644 index 0822e1a..0000000 --- a/contrib/libpcap/pcap.c +++ /dev/null @@ -1,918 +0,0 @@ -/* - * Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998 - * 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. - */ - -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/libpcap/pcap.c,v 1.88.2.19 2007/09/19 02:50:52 guy Exp $ (LBL)"; -#endif - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#ifdef WIN32 -#include -#else /* WIN32 */ -#include -#endif /* WIN32 */ - -#include -#include -#include -#if !defined(_MSC_VER) && !defined(__BORLANDC__) -#include -#endif -#include -#include - -#ifdef HAVE_OS_PROTO_H -#include "os-proto.h" -#endif - -#ifdef MSDOS -#include "pcap-dos.h" -#endif - -#include "pcap-int.h" - -#ifdef HAVE_DAG_API -#include -#include -#endif - -int -pcap_dispatch(pcap_t *p, int cnt, pcap_handler callback, u_char *user) -{ - - return p->read_op(p, cnt, callback, user); -} - -/* - * XXX - is this necessary? - */ -int -pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) -{ - - return p->read_op(p, cnt, callback, user); -} - -int -pcap_loop(pcap_t *p, int cnt, pcap_handler callback, u_char *user) -{ - register int n; - - for (;;) { - if (p->sf.rfile != NULL) { - /* - * 0 means EOF, so don't loop if we get 0. - */ - n = pcap_offline_read(p, cnt, callback, user); - } else { - /* - * XXX keep reading until we get something - * (or an error occurs) - */ - do { - n = p->read_op(p, cnt, callback, user); - } while (n == 0); - } - if (n <= 0) - return (n); - if (cnt > 0) { - cnt -= n; - if (cnt <= 0) - return (0); - } - } -} - -struct singleton { - struct pcap_pkthdr *hdr; - const u_char *pkt; -}; - - -static void -pcap_oneshot(u_char *userData, const struct pcap_pkthdr *h, const u_char *pkt) -{ - struct singleton *sp = (struct singleton *)userData; - *sp->hdr = *h; - sp->pkt = pkt; -} - -const u_char * -pcap_next(pcap_t *p, struct pcap_pkthdr *h) -{ - struct singleton s; - - s.hdr = h; - if (pcap_dispatch(p, 1, pcap_oneshot, (u_char*)&s) <= 0) - return (0); - return (s.pkt); -} - -struct pkt_for_fakecallback { - struct pcap_pkthdr *hdr; - const u_char **pkt; -}; - -static void -pcap_fakecallback(u_char *userData, const struct pcap_pkthdr *h, - const u_char *pkt) -{ - struct pkt_for_fakecallback *sp = (struct pkt_for_fakecallback *)userData; - - *sp->hdr = *h; - *sp->pkt = pkt; -} - -int -pcap_next_ex(pcap_t *p, struct pcap_pkthdr **pkt_header, - const u_char **pkt_data) -{ - struct pkt_for_fakecallback s; - - s.hdr = &p->pcap_header; - s.pkt = pkt_data; - - /* Saves a pointer to the packet headers */ - *pkt_header= &p->pcap_header; - - if (p->sf.rfile != NULL) { - int status; - - /* We are on an offline capture */ - status = pcap_offline_read(p, 1, pcap_fakecallback, - (u_char *)&s); - - /* - * Return codes for pcap_offline_read() are: - * - 0: EOF - * - -1: error - * - >1: OK - * The first one ('0') conflicts with the return code of - * 0 from pcap_read() meaning "no packets arrived before - * the timeout expired", so we map it to -2 so you can - * distinguish between an EOF from a savefile and a - * "no packets arrived before the timeout expired, try - * again" from a live capture. - */ - if (status == 0) - return (-2); - else - return (status); - } - - /* - * Return codes for pcap_read() are: - * - 0: timeout - * - -1: error - * - -2: loop was broken out of with pcap_breakloop() - * - >1: OK - * The first one ('0') conflicts with the return code of 0 from - * pcap_offline_read() meaning "end of file". - */ - return (p->read_op(p, 1, pcap_fakecallback, (u_char *)&s)); -} - -/* - * Force the loop in "pcap_read()" or "pcap_read_offline()" to terminate. - */ -void -pcap_breakloop(pcap_t *p) -{ - p->break_loop = 1; -} - -int -pcap_datalink(pcap_t *p) -{ - return (p->linktype); -} - -int -pcap_list_datalinks(pcap_t *p, int **dlt_buffer) -{ - if (p->dlt_count == 0) { - /* - * We couldn't fetch the list of DLTs, which means - * this platform doesn't support changing the - * DLT for an interface. Return a list of DLTs - * containing only the DLT this device supports. - */ - *dlt_buffer = (int*)malloc(sizeof(**dlt_buffer)); - if (*dlt_buffer == NULL) { - (void)snprintf(p->errbuf, sizeof(p->errbuf), - "malloc: %s", pcap_strerror(errno)); - return (-1); - } - **dlt_buffer = p->linktype; - return (1); - } else { - *dlt_buffer = (int*)calloc(sizeof(**dlt_buffer), p->dlt_count); - if (*dlt_buffer == NULL) { - (void)snprintf(p->errbuf, sizeof(p->errbuf), - "malloc: %s", pcap_strerror(errno)); - return (-1); - } - (void)memcpy(*dlt_buffer, p->dlt_list, - sizeof(**dlt_buffer) * p->dlt_count); - return (p->dlt_count); - } -} - -int -pcap_set_datalink(pcap_t *p, int dlt) -{ - int i; - const char *dlt_name; - - if (p->dlt_count == 0 || p->set_datalink_op == NULL) { - /* - * We couldn't fetch the list of DLTs, or we don't - * have a "set datalink" operation, which means - * this platform doesn't support changing the - * DLT for an interface. Check whether the new - * DLT is the one this interface supports. - */ - if (p->linktype != dlt) - goto unsupported; - - /* - * It is, so there's nothing we need to do here. - */ - return (0); - } - for (i = 0; i < p->dlt_count; i++) - if (p->dlt_list[i] == dlt) - break; - if (i >= p->dlt_count) - goto unsupported; - if (p->dlt_count == 2 && p->dlt_list[0] == DLT_EN10MB && - dlt == DLT_DOCSIS) { - /* - * This is presumably an Ethernet device, as the first - * link-layer type it offers is DLT_EN10MB, and the only - * other type it offers is DLT_DOCSIS. That means that - * we can't tell the driver to supply DOCSIS link-layer - * headers - we're just pretending that's what we're - * getting, as, presumably, we're capturing on a dedicated - * link to a Cisco Cable Modem Termination System, and - * it's putting raw DOCSIS frames on the wire inside low-level - * Ethernet framing. - */ - p->linktype = dlt; - return (0); - } - if (p->set_datalink_op(p, dlt) == -1) - return (-1); - p->linktype = dlt; - return (0); - -unsupported: - dlt_name = pcap_datalink_val_to_name(dlt); - if (dlt_name != NULL) { - (void) snprintf(p->errbuf, sizeof(p->errbuf), - "%s is not one of the DLTs supported by this device", - dlt_name); - } else { - (void) snprintf(p->errbuf, sizeof(p->errbuf), - "DLT %d is not one of the DLTs supported by this device", - dlt); - } - return (-1); -} - -struct dlt_choice { - const char *name; - const char *description; - int dlt; -}; - -#define DLT_CHOICE(code, description) { #code, description, code } -#define DLT_CHOICE_SENTINEL { NULL, NULL, 0 } - -static struct dlt_choice dlt_choices[] = { - DLT_CHOICE(DLT_NULL, "BSD loopback"), - DLT_CHOICE(DLT_EN10MB, "Ethernet"), - DLT_CHOICE(DLT_IEEE802, "Token ring"), - DLT_CHOICE(DLT_ARCNET, "ARCNET"), - DLT_CHOICE(DLT_SLIP, "SLIP"), - DLT_CHOICE(DLT_PPP, "PPP"), - DLT_CHOICE(DLT_FDDI, "FDDI"), - DLT_CHOICE(DLT_ATM_RFC1483, "RFC 1483 LLC-encapsulated ATM"), - DLT_CHOICE(DLT_RAW, "Raw IP"), - DLT_CHOICE(DLT_SLIP_BSDOS, "BSD/OS SLIP"), - DLT_CHOICE(DLT_PPP_BSDOS, "BSD/OS PPP"), - DLT_CHOICE(DLT_ATM_CLIP, "Linux Classical IP-over-ATM"), - DLT_CHOICE(DLT_PPP_SERIAL, "PPP over serial"), - DLT_CHOICE(DLT_PPP_ETHER, "PPPoE"), - DLT_CHOICE(DLT_C_HDLC, "Cisco HDLC"), - DLT_CHOICE(DLT_IEEE802_11, "802.11"), - DLT_CHOICE(DLT_FRELAY, "Frame Relay"), - DLT_CHOICE(DLT_LOOP, "OpenBSD loopback"), - DLT_CHOICE(DLT_ENC, "OpenBSD encapsulated IP"), - DLT_CHOICE(DLT_LINUX_SLL, "Linux cooked"), - DLT_CHOICE(DLT_LTALK, "Localtalk"), - DLT_CHOICE(DLT_PFLOG, "OpenBSD pflog file"), - DLT_CHOICE(DLT_PRISM_HEADER, "802.11 plus Prism header"), - DLT_CHOICE(DLT_IP_OVER_FC, "RFC 2625 IP-over-Fibre Channel"), - DLT_CHOICE(DLT_SUNATM, "Sun raw ATM"), - DLT_CHOICE(DLT_IEEE802_11_RADIO, "802.11 plus BSD radio information header"), - DLT_CHOICE(DLT_APPLE_IP_OVER_IEEE1394, "Apple IP-over-IEEE 1394"), - DLT_CHOICE(DLT_ARCNET_LINUX, "Linux ARCNET"), - DLT_CHOICE(DLT_DOCSIS, "DOCSIS"), - DLT_CHOICE(DLT_LINUX_IRDA, "Linux IrDA"), - DLT_CHOICE(DLT_LINUX_LAPD, "Linux vISDN LAPD"), - DLT_CHOICE(DLT_IEEE802_11_RADIO_AVS, "802.11 plus AVS radio information header"), - DLT_CHOICE(DLT_SYMANTEC_FIREWALL, "Symantec Firewall"), - DLT_CHOICE(DLT_JUNIPER_ATM1, "Juniper ATM1 PIC"), - DLT_CHOICE(DLT_JUNIPER_ATM2, "Juniper ATM2 PIC"), - DLT_CHOICE(DLT_JUNIPER_MLPPP, "Juniper Multi-Link PPP"), - DLT_CHOICE(DLT_PPP_PPPD, "PPP for pppd, with direction flag"), - DLT_CHOICE(DLT_JUNIPER_PPPOE, "Juniper PPPoE"), - DLT_CHOICE(DLT_JUNIPER_PPPOE_ATM, "Juniper PPPoE/ATM"), - DLT_CHOICE(DLT_GPRS_LLC, "GPRS LLC"), - DLT_CHOICE(DLT_GPF_T, "GPF-T"), - DLT_CHOICE(DLT_GPF_F, "GPF-F"), - DLT_CHOICE(DLT_JUNIPER_PIC_PEER, "Juniper PIC Peer"), - DLT_CHOICE(DLT_JUNIPER_MLFR, "Juniper Multi-Link Frame Relay"), - DLT_CHOICE(DLT_ERF_ETH, "Ethernet with Endace ERF header"), - DLT_CHOICE(DLT_ERF_POS, "Packet-over-SONET with Endace ERF header"), - DLT_CHOICE(DLT_JUNIPER_GGSN, "Juniper GGSN PIC"), - DLT_CHOICE(DLT_JUNIPER_ES, "Juniper Encryption Services PIC"), - DLT_CHOICE(DLT_JUNIPER_MONITOR, "Juniper Passive Monitor PIC"), - DLT_CHOICE(DLT_JUNIPER_SERVICES, "Juniper Advanced Services PIC"), - DLT_CHOICE(DLT_JUNIPER_MFR, "Juniper FRF.16 Frame Relay"), - DLT_CHOICE(DLT_JUNIPER_ETHER, "Juniper Ethernet"), - DLT_CHOICE(DLT_JUNIPER_PPP, "Juniper PPP"), - DLT_CHOICE(DLT_JUNIPER_FRELAY, "Juniper Frame Relay"), - DLT_CHOICE(DLT_JUNIPER_CHDLC, "Juniper C-HDLC"), - DLT_CHOICE(DLT_MFR, "FRF.16 Frame Relay"), - DLT_CHOICE(DLT_JUNIPER_VP, "Juniper Voice PIC"), - DLT_CHOICE(DLT_MTP2, "SS7 MTP2"), - DLT_CHOICE(DLT_A429, "Arinc 429"), - DLT_CHOICE(DLT_A653_ICM, "Arinc 653 Interpartition Communication"), - DLT_CHOICE(DLT_USB, "USB"), - DLT_CHOICE(DLT_BLUETOOTH_HCI_H4, "Bluetooth HCI UART transport layer"), - DLT_CHOICE(DLT_CAN20B, "Controller Area Network (CAN) v. 2.0B"), - DLT_CHOICE(DLT_MTP2_WITH_PHDR, "SS7 MTP2 with Pseudo-header"), - DLT_CHOICE_SENTINEL -}; - -/* - * This array is designed for mapping upper and lower case letter - * together for a case independent comparison. The mappings are - * based upon ascii character sequences. - */ -static const u_char charmap[] = { - (u_char)'\000', (u_char)'\001', (u_char)'\002', (u_char)'\003', - (u_char)'\004', (u_char)'\005', (u_char)'\006', (u_char)'\007', - (u_char)'\010', (u_char)'\011', (u_char)'\012', (u_char)'\013', - (u_char)'\014', (u_char)'\015', (u_char)'\016', (u_char)'\017', - (u_char)'\020', (u_char)'\021', (u_char)'\022', (u_char)'\023', - (u_char)'\024', (u_char)'\025', (u_char)'\026', (u_char)'\027', - (u_char)'\030', (u_char)'\031', (u_char)'\032', (u_char)'\033', - (u_char)'\034', (u_char)'\035', (u_char)'\036', (u_char)'\037', - (u_char)'\040', (u_char)'\041', (u_char)'\042', (u_char)'\043', - (u_char)'\044', (u_char)'\045', (u_char)'\046', (u_char)'\047', - (u_char)'\050', (u_char)'\051', (u_char)'\052', (u_char)'\053', - (u_char)'\054', (u_char)'\055', (u_char)'\056', (u_char)'\057', - (u_char)'\060', (u_char)'\061', (u_char)'\062', (u_char)'\063', - (u_char)'\064', (u_char)'\065', (u_char)'\066', (u_char)'\067', - (u_char)'\070', (u_char)'\071', (u_char)'\072', (u_char)'\073', - (u_char)'\074', (u_char)'\075', (u_char)'\076', (u_char)'\077', - (u_char)'\100', (u_char)'\141', (u_char)'\142', (u_char)'\143', - (u_char)'\144', (u_char)'\145', (u_char)'\146', (u_char)'\147', - (u_char)'\150', (u_char)'\151', (u_char)'\152', (u_char)'\153', - (u_char)'\154', (u_char)'\155', (u_char)'\156', (u_char)'\157', - (u_char)'\160', (u_char)'\161', (u_char)'\162', (u_char)'\163', - (u_char)'\164', (u_char)'\165', (u_char)'\166', (u_char)'\167', - (u_char)'\170', (u_char)'\171', (u_char)'\172', (u_char)'\133', - (u_char)'\134', (u_char)'\135', (u_char)'\136', (u_char)'\137', - (u_char)'\140', (u_char)'\141', (u_char)'\142', (u_char)'\143', - (u_char)'\144', (u_char)'\145', (u_char)'\146', (u_char)'\147', - (u_char)'\150', (u_char)'\151', (u_char)'\152', (u_char)'\153', - (u_char)'\154', (u_char)'\155', (u_char)'\156', (u_char)'\157', - (u_char)'\160', (u_char)'\161', (u_char)'\162', (u_char)'\163', - (u_char)'\164', (u_char)'\165', (u_char)'\166', (u_char)'\167', - (u_char)'\170', (u_char)'\171', (u_char)'\172', (u_char)'\173', - (u_char)'\174', (u_char)'\175', (u_char)'\176', (u_char)'\177', - (u_char)'\200', (u_char)'\201', (u_char)'\202', (u_char)'\203', - (u_char)'\204', (u_char)'\205', (u_char)'\206', (u_char)'\207', - (u_char)'\210', (u_char)'\211', (u_char)'\212', (u_char)'\213', - (u_char)'\214', (u_char)'\215', (u_char)'\216', (u_char)'\217', - (u_char)'\220', (u_char)'\221', (u_char)'\222', (u_char)'\223', - (u_char)'\224', (u_char)'\225', (u_char)'\226', (u_char)'\227', - (u_char)'\230', (u_char)'\231', (u_char)'\232', (u_char)'\233', - (u_char)'\234', (u_char)'\235', (u_char)'\236', (u_char)'\237', - (u_char)'\240', (u_char)'\241', (u_char)'\242', (u_char)'\243', - (u_char)'\244', (u_char)'\245', (u_char)'\246', (u_char)'\247', - (u_char)'\250', (u_char)'\251', (u_char)'\252', (u_char)'\253', - (u_char)'\254', (u_char)'\255', (u_char)'\256', (u_char)'\257', - (u_char)'\260', (u_char)'\261', (u_char)'\262', (u_char)'\263', - (u_char)'\264', (u_char)'\265', (u_char)'\266', (u_char)'\267', - (u_char)'\270', (u_char)'\271', (u_char)'\272', (u_char)'\273', - (u_char)'\274', (u_char)'\275', (u_char)'\276', (u_char)'\277', - (u_char)'\300', (u_char)'\341', (u_char)'\342', (u_char)'\343', - (u_char)'\344', (u_char)'\345', (u_char)'\346', (u_char)'\347', - (u_char)'\350', (u_char)'\351', (u_char)'\352', (u_char)'\353', - (u_char)'\354', (u_char)'\355', (u_char)'\356', (u_char)'\357', - (u_char)'\360', (u_char)'\361', (u_char)'\362', (u_char)'\363', - (u_char)'\364', (u_char)'\365', (u_char)'\366', (u_char)'\367', - (u_char)'\370', (u_char)'\371', (u_char)'\372', (u_char)'\333', - (u_char)'\334', (u_char)'\335', (u_char)'\336', (u_char)'\337', - (u_char)'\340', (u_char)'\341', (u_char)'\342', (u_char)'\343', - (u_char)'\344', (u_char)'\345', (u_char)'\346', (u_char)'\347', - (u_char)'\350', (u_char)'\351', (u_char)'\352', (u_char)'\353', - (u_char)'\354', (u_char)'\355', (u_char)'\356', (u_char)'\357', - (u_char)'\360', (u_char)'\361', (u_char)'\362', (u_char)'\363', - (u_char)'\364', (u_char)'\365', (u_char)'\366', (u_char)'\367', - (u_char)'\370', (u_char)'\371', (u_char)'\372', (u_char)'\373', - (u_char)'\374', (u_char)'\375', (u_char)'\376', (u_char)'\377', -}; - -int -pcap_strcasecmp(const char *s1, const char *s2) -{ - register const u_char *cm = charmap, - *us1 = (const u_char *)s1, - *us2 = (const u_char *)s2; - - while (cm[*us1] == cm[*us2++]) - if (*us1++ == '\0') - return(0); - return (cm[*us1] - cm[*--us2]); -} - -int -pcap_datalink_name_to_val(const char *name) -{ - int i; - - for (i = 0; dlt_choices[i].name != NULL; i++) { - if (pcap_strcasecmp(dlt_choices[i].name + sizeof("DLT_") - 1, - name) == 0) - return (dlt_choices[i].dlt); - } - return (-1); -} - -const char * -pcap_datalink_val_to_name(int dlt) -{ - int i; - - for (i = 0; dlt_choices[i].name != NULL; i++) { - if (dlt_choices[i].dlt == dlt) - return (dlt_choices[i].name + sizeof("DLT_") - 1); - } - return (NULL); -} - -const char * -pcap_datalink_val_to_description(int dlt) -{ - int i; - - for (i = 0; dlt_choices[i].name != NULL; i++) { - if (dlt_choices[i].dlt == dlt) - return (dlt_choices[i].description); - } - return (NULL); -} - -int -pcap_snapshot(pcap_t *p) -{ - return (p->snapshot); -} - -int -pcap_is_swapped(pcap_t *p) -{ - return (p->sf.swapped); -} - -int -pcap_major_version(pcap_t *p) -{ - return (p->sf.version_major); -} - -int -pcap_minor_version(pcap_t *p) -{ - return (p->sf.version_minor); -} - -FILE * -pcap_file(pcap_t *p) -{ - return (p->sf.rfile); -} - -int -pcap_fileno(pcap_t *p) -{ -#ifndef WIN32 - return (p->fd); -#else - if (p->adapter != NULL) - return ((int)(DWORD)p->adapter->hFile); - else - return (-1); -#endif -} - -#if !defined(WIN32) && !defined(MSDOS) -int -pcap_get_selectable_fd(pcap_t *p) -{ - return (p->selectable_fd); -} -#endif - -void -pcap_perror(pcap_t *p, char *prefix) -{ - fprintf(stderr, "%s: %s\n", prefix, p->errbuf); -} - -char * -pcap_geterr(pcap_t *p) -{ - return (p->errbuf); -} - -int -pcap_getnonblock(pcap_t *p, char *errbuf) -{ - return p->getnonblock_op(p, errbuf); -} - -/* - * Get the current non-blocking mode setting, under the assumption that - * it's just the standard POSIX non-blocking flag. - * - * We don't look at "p->nonblock", in case somebody tweaked the FD - * directly. - */ -#if !defined(WIN32) && !defined(MSDOS) -int -pcap_getnonblock_fd(pcap_t *p, char *errbuf) -{ - int fdflags; - - fdflags = fcntl(p->fd, F_GETFL, 0); - if (fdflags == -1) { - snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "F_GETFL: %s", - pcap_strerror(errno)); - return (-1); - } - if (fdflags & O_NONBLOCK) - return (1); - else - return (0); -} -#endif - -int -pcap_setnonblock(pcap_t *p, int nonblock, char *errbuf) -{ - return p->setnonblock_op(p, nonblock, errbuf); -} - -#if !defined(WIN32) && !defined(MSDOS) -/* - * Set non-blocking mode, under the assumption that it's just the - * standard POSIX non-blocking flag. (This can be called by the - * per-platform non-blocking-mode routine if that routine also - * needs to do some additional work.) - */ -int -pcap_setnonblock_fd(pcap_t *p, int nonblock, char *errbuf) -{ - int fdflags; - - fdflags = fcntl(p->fd, F_GETFL, 0); - if (fdflags == -1) { - snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "F_GETFL: %s", - pcap_strerror(errno)); - return (-1); - } - if (nonblock) - fdflags |= O_NONBLOCK; - else - fdflags &= ~O_NONBLOCK; - if (fcntl(p->fd, F_SETFL, fdflags) == -1) { - snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "F_SETFL: %s", - pcap_strerror(errno)); - return (-1); - } - return (0); -} -#endif - -#ifdef WIN32 -/* - * Generate a string for the last Win32-specific error (i.e. an error generated when - * calling a Win32 API). - * For errors occurred during standard C calls, we still use pcap_strerror() - */ -char * -pcap_win32strerror(void) -{ - DWORD error; - static char errbuf[PCAP_ERRBUF_SIZE+1]; - int errlen; - char *p; - - error = GetLastError(); - FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, error, 0, errbuf, - PCAP_ERRBUF_SIZE, NULL); - - /* - * "FormatMessage()" "helpfully" sticks CR/LF at the end of the - * message. Get rid of it. - */ - errlen = strlen(errbuf); - if (errlen >= 2) { - errbuf[errlen - 1] = '\0'; - errbuf[errlen - 2] = '\0'; - } - p = strchr(errbuf, '\0'); - snprintf (p, sizeof(errbuf)-(p-errbuf), " (%lu)", error); - return (errbuf); -} -#endif - -/* - * Not all systems have strerror(). - */ -const char * -pcap_strerror(int errnum) -{ -#ifdef HAVE_STRERROR - return (strerror(errnum)); -#else - extern int sys_nerr; - extern const char *const sys_errlist[]; - static char ebuf[20]; - - if ((unsigned int)errnum < sys_nerr) - return ((char *)sys_errlist[errnum]); - (void)snprintf(ebuf, sizeof ebuf, "Unknown error: %d", errnum); - return(ebuf); -#endif -} - -int -pcap_setfilter(pcap_t *p, struct bpf_program *fp) -{ - return p->setfilter_op(p, fp); -} - -/* - * Set direction flag, which controls whether we accept only incoming - * packets, only outgoing packets, or both. - * Note that, depending on the platform, some or all direction arguments - * might not be supported. - */ -int -pcap_setdirection(pcap_t *p, pcap_direction_t d) -{ - if (p->setdirection_op == NULL) { - snprintf(p->errbuf, PCAP_ERRBUF_SIZE, - "Setting direction is not implemented on this platform"); - return -1; - } else - return p->setdirection_op(p, d); -} - -int -pcap_stats(pcap_t *p, struct pcap_stat *ps) -{ - return p->stats_op(p, ps); -} - -static int -pcap_stats_dead(pcap_t *p, struct pcap_stat *ps _U_) -{ - snprintf(p->errbuf, PCAP_ERRBUF_SIZE, - "Statistics aren't available from a pcap_open_dead pcap_t"); - return (-1); -} - -void -pcap_close_common(pcap_t *p) -{ - if (p->buffer != NULL) - free(p->buffer); -#if !defined(WIN32) && !defined(MSDOS) - if (p->fd >= 0) - close(p->fd); -#endif -} - -static void -pcap_close_dead(pcap_t *p _U_) -{ - /* Nothing to do. */ -} - -pcap_t * -pcap_open_dead(int linktype, int snaplen) -{ - pcap_t *p; - - p = malloc(sizeof(*p)); - if (p == NULL) - return NULL; - memset (p, 0, sizeof(*p)); - p->snapshot = snaplen; - p->linktype = linktype; - p->stats_op = pcap_stats_dead; - p->close_op = pcap_close_dead; - return p; -} - -/* - * API compatible with WinPcap's "send a packet" routine - returns -1 - * on error, 0 otherwise. - * - * XXX - what if we get a short write? - */ -int -pcap_sendpacket(pcap_t *p, const u_char *buf, int size) -{ - if (p->inject_op(p, buf, size) == -1) - return (-1); - return (0); -} - -/* - * API compatible with OpenBSD's "send a packet" routine - returns -1 on - * error, number of bytes written otherwise. - */ -int -pcap_inject(pcap_t *p, const void *buf, size_t size) -{ - return (p->inject_op(p, buf, size)); -} - -void -pcap_close(pcap_t *p) -{ - p->close_op(p); - if (p->dlt_list != NULL) - free(p->dlt_list); - pcap_freecode(&p->fcode); - free(p); -} - -/* - * We make the version string static, and return a pointer to it, rather - * than exporting the version string directly. On at least some UNIXes, - * if you import data from a shared library into an program, the data is - * bound into the program binary, so if the string in the version of the - * library with which the program was linked isn't the same as the - * string in the version of the library with which the program is being - * run, various undesirable things may happen (warnings, the string - * being the one from the version of the library with which the program - * was linked, or even weirder things, such as the string being the one - * from the library but being truncated). - */ -#ifdef HAVE_VERSION_H -#include "version.h" -#else -static const char pcap_version_string[] = "libpcap version 0.9.8"; -#endif - -#ifdef WIN32 -/* - * XXX - it'd be nice if we could somehow generate the WinPcap and libpcap - * version numbers when building WinPcap. (It'd be nice to do so for - * the packet.dll version number as well.) - */ -static const char wpcap_version_string[] = "4.0"; -static const char pcap_version_string_fmt[] = - "WinPcap version %s, based on %s"; -static const char pcap_version_string_packet_dll_fmt[] = - "WinPcap version %s (packet.dll version %s), based on %s"; -static char *full_pcap_version_string; - -const char * -pcap_lib_version(void) -{ - char *packet_version_string; - size_t full_pcap_version_string_len; - - if (full_pcap_version_string == NULL) { - /* - * Generate the version string. - */ - packet_version_string = PacketGetVersion(); - if (strcmp(wpcap_version_string, packet_version_string) == 0) { - /* - * WinPcap version string and packet.dll version - * string are the same; just report the WinPcap - * version. - */ - full_pcap_version_string_len = - (sizeof pcap_version_string_fmt - 4) + - strlen(wpcap_version_string) + - strlen(pcap_version_string); - full_pcap_version_string = - malloc(full_pcap_version_string_len); - sprintf(full_pcap_version_string, - pcap_version_string_fmt, wpcap_version_string, - pcap_version_string); - } else { - /* - * WinPcap version string and packet.dll version - * string are different; that shouldn't be the - * case (the two libraries should come from the - * same version of WinPcap), so we report both - * versions. - */ - full_pcap_version_string_len = - (sizeof pcap_version_string_packet_dll_fmt - 6) + - strlen(wpcap_version_string) + - strlen(packet_version_string) + - strlen(pcap_version_string); - full_pcap_version_string = malloc(full_pcap_version_string_len); - - sprintf(full_pcap_version_string, - pcap_version_string_packet_dll_fmt, - wpcap_version_string, packet_version_string, - pcap_version_string); - } - } - return (full_pcap_version_string); -} - -#elif defined(MSDOS) - -static char *full_pcap_version_string; - -const char * -pcap_lib_version (void) -{ - char *packet_version_string; - size_t full_pcap_version_string_len; - static char dospfx[] = "DOS-"; - - if (full_pcap_version_string == NULL) { - /* - * Generate the version string. - */ - full_pcap_version_string_len = - sizeof dospfx + strlen(pcap_version_string); - full_pcap_version_string = - malloc(full_pcap_version_string_len); - strcpy(full_pcap_version_string, dospfx); - strcat(full_pcap_version_string, pcap_version_string); - } - return (full_pcap_version_string); -} - -#else /* UN*X */ - -const char * -pcap_lib_version(void) -{ - return (pcap_version_string); -} -#endif -- cgit v1.1