Index: stable/10/contrib/libpcap/inet.c =================================================================== --- stable/10/contrib/libpcap/inet.c (revision 277721) +++ stable/10/contrib/libpcap/inet.c (revision 277722) @@ -1,933 +1,937 @@ /* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ /* * Copyright (c) 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/inet.c,v 1.79 2008-04-20 18:19:02 guy Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif #ifdef WIN32 #include #else /* WIN32 */ #include #ifndef MSDOS #include #endif #include #include #ifdef HAVE_SYS_SOCKIO_H #include #endif struct mbuf; /* Squelch compiler warnings on some platforms for */ struct rtentry; /* declarations in */ #include #include #endif /* WIN32 */ #include #include #include #include #include #include #if !defined(WIN32) && !defined(__BORLANDC__) #include #endif /* !WIN32 && !__BORLANDC__ */ #ifdef HAVE_LIMITS_H #include #else #define INT_MAX 2147483647 #endif #include "pcap-int.h" #ifdef HAVE_OS_PROTO_H #include "os-proto.h" #endif /* Not all systems have IFF_LOOPBACK */ #ifdef IFF_LOOPBACK #define ISLOOPBACK(name, flags) ((flags) & IFF_LOOPBACK) #else #define ISLOOPBACK(name, flags) ((name)[0] == 'l' && (name)[1] == 'o' && \ (isdigit((unsigned char)((name)[2])) || (name)[2] == '\0')) #endif struct sockaddr * dup_sockaddr(struct sockaddr *sa, size_t sa_length) { struct sockaddr *newsa; if ((newsa = malloc(sa_length)) == NULL) return (NULL); return (memcpy(newsa, sa, sa_length)); } static int get_instance(const char *name) { const char *cp, *endcp; int n; if (strcmp(name, "any") == 0) { /* * Give the "any" device an artificially high instance * number, so it shows up after all other non-loopback * interfaces. */ return INT_MAX; } endcp = name + strlen(name); for (cp = name; cp < endcp && !isdigit((unsigned char)*cp); ++cp) continue; if (isdigit((unsigned char)*cp)) n = atoi(cp); else n = 0; return (n); } int add_or_find_if(pcap_if_t **curdev_ret, pcap_if_t **alldevs, const char *name, u_int flags, const char *description, char *errbuf) { pcap_t *p; pcap_if_t *curdev, *prevdev, *nextdev; int this_instance; char open_errbuf[PCAP_ERRBUF_SIZE]; /* * Is there already an entry in the list for this interface? */ for (curdev = *alldevs; curdev != NULL; curdev = curdev->next) { if (strcmp(name, curdev->name) == 0) break; /* yes, we found it */ } if (curdev == NULL) { /* * No, we didn't find it. * * Can we open this interface for live capture? * * We do this check so that interfaces that are * supplied by the interface enumeration mechanism * we're using but that don't support packet capture * aren't included in the list. Loopback interfaces * on Solaris are an example of this; we don't just * omit loopback interfaces on all platforms because * you *can* capture on loopback interfaces on some * OSes. * * On OS X, we don't do this check if the device * name begins with "wlt"; at least some versions * of OS X offer monitor mode capturing by having * a separate "monitor mode" device for each wireless * adapter, rather than by implementing the ioctls * that {Free,Net,Open,DragonFly}BSD provide. * Opening that device puts the adapter into monitor * mode, which, at least for some adapters, causes * them to deassociate from the network with which * they're associated. * * Instead, we try to open the corresponding "en" * device (so that we don't end up with, for users * without sufficient privilege to open capture * devices, a list of adapters that only includes * the wlt devices). */ #ifdef __APPLE__ if (strncmp(name, "wlt", 3) == 0) { char *en_name; size_t en_name_len; /* * Try to allocate a buffer for the "en" * device's name. */ en_name_len = strlen(name) - 1; en_name = malloc(en_name_len + 1); if (en_name == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); return (-1); } strcpy(en_name, "en"); strcat(en_name, name + 3); p = pcap_open_live(en_name, 68, 0, 0, open_errbuf); free(en_name); } else #endif /* __APPLE */ p = pcap_open_live(name, 68, 0, 0, open_errbuf); if (p == NULL) { /* * No. Don't bother including it. * Don't treat this as an error, though. */ *curdev_ret = NULL; return (0); } pcap_close(p); /* * Yes, we can open it. * Allocate a new entry. */ curdev = malloc(sizeof(pcap_if_t)); if (curdev == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); return (-1); } /* * Fill in the entry. */ curdev->next = NULL; curdev->name = strdup(name); if (curdev->name == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); free(curdev); return (-1); } if (description != NULL) { /* * We have a description for this interface. */ curdev->description = strdup(description); if (curdev->description == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); free(curdev->name); free(curdev); return (-1); } } else { /* * We don't. */ curdev->description = NULL; } curdev->addresses = NULL; /* list starts out as empty */ curdev->flags = 0; if (ISLOOPBACK(name, flags)) curdev->flags |= PCAP_IF_LOOPBACK; /* * Add it to the list, in the appropriate location. * First, get the instance number of this interface. */ this_instance = get_instance(name); /* * Now look for the last interface with an instance number * less than or equal to the new interface's instance * number - except that non-loopback interfaces are * arbitrarily treated as having interface numbers less * than those of loopback interfaces, so the loopback * interfaces are put at the end of the list. * * We start with "prevdev" being NULL, meaning we're before * the first element in the list. */ prevdev = NULL; for (;;) { /* * Get the interface after this one. */ if (prevdev == NULL) { /* * The next element is the first element. */ nextdev = *alldevs; } else nextdev = prevdev->next; /* * Are we at the end of the list? */ if (nextdev == NULL) { /* * Yes - we have to put the new entry * after "prevdev". */ break; } /* * Is the new interface a non-loopback interface * and the next interface a loopback interface? */ if (!(curdev->flags & PCAP_IF_LOOPBACK) && (nextdev->flags & PCAP_IF_LOOPBACK)) { /* * Yes, we should put the new entry * before "nextdev", i.e. after "prevdev". */ break; } /* * Is the new interface's instance number less * than the next interface's instance number, * and is it the case that the new interface is a * non-loopback interface or the next interface is * a loopback interface? * * (The goal of both loopback tests is to make * sure that we never put a loopback interface * before any non-loopback interface and that we * always put a non-loopback interface before all * loopback interfaces.) */ if (this_instance < get_instance(nextdev->name) && (!(curdev->flags & PCAP_IF_LOOPBACK) || (nextdev->flags & PCAP_IF_LOOPBACK))) { /* * Yes - we should put the new entry * before "nextdev", i.e. after "prevdev". */ break; } prevdev = nextdev; } /* * Insert before "nextdev". */ curdev->next = nextdev; /* * Insert after "prevdev" - unless "prevdev" is null, * in which case this is the first interface. */ if (prevdev == NULL) { /* * This is the first interface. Pass back a * pointer to it, and put "curdev" before * "nextdev". */ *alldevs = curdev; } else prevdev->next = curdev; } *curdev_ret = curdev; return (0); } /* * XXX - on FreeBSDs that support it, should it get the sysctl named * "dev.{adapter family name}.{adapter unit}.%desc" to get a description * of the adapter? Note that "dev.an.0.%desc" is "Aironet PC4500/PC4800" * with my Cisco 350 card, so the name isn't entirely descriptive. The * "dev.an.0.%pnpinfo" has a better description, although one might argue * that the problem is really a driver bug - if it can find out that it's * a Cisco 340 or 350, rather than an old Aironet card, it should use * that in the description. * * Do NetBSD, DragonflyBSD, or OpenBSD support this as well? FreeBSD * and OpenBSD let you get a description, but it's not generated by the OS, * it's set with another ioctl that ifconfig supports; we use that to get * a description in FreeBSD and OpenBSD, but if there is no such * description available, it still might be nice to get some description * string based on the device type or something such as that. * * In OS X, the System Configuration framework can apparently return * names in 10.4 and later. * * It also appears that freedesktop.org's HAL offers an "info.product" * string, but the HAL specification says it "should not be used in any * UI" and "subsystem/capability specific properties" should be used * instead and, in any case, I think HAL is being deprecated in * favor of other stuff such as DeviceKit. DeviceKit doesn't appear * to have any obvious product information for devices, but maybe * I haven't looked hard enough. * * Using the System Configuration framework, or HAL, or DeviceKit, or * whatever, would require that libpcap applications be linked with * the frameworks/libraries in question. That shouldn't be a problem * for programs linking with the shared version of libpcap (unless * you're running on AIX - which I think is the only UN*X that doesn't * support linking a shared library with other libraries on which it * depends, and having an executable linked only with the first shared * library automatically pick up the other libraries when started - * and using HAL or whatever). Programs linked with the static * version of libpcap would have to use pcap-config with the --static * flag in order to get the right linker flags in order to pick up * the additional libraries/frameworks; those programs need that anyway * for libpcap 1.1 and beyond on Linux, as, by default, it requires * -lnl. * * Do any other UN*Xes, or desktop environments support getting a * description? */ int add_addr_to_iflist(pcap_if_t **alldevs, const char *name, u_int flags, struct sockaddr *addr, size_t addr_size, struct sockaddr *netmask, size_t netmask_size, struct sockaddr *broadaddr, size_t broadaddr_size, struct sockaddr *dstaddr, size_t dstaddr_size, char *errbuf) { pcap_if_t *curdev; char *description = NULL; pcap_addr_t *curaddr, *prevaddr, *nextaddr; #ifdef SIOCGIFDESCR int s; struct ifreq ifrdesc; #ifndef IFDESCRSIZE size_t descrlen = 64; #else size_t descrlen = IFDESCRSIZE; #endif /* IFDESCRSIZE */ #endif /* SIOCGIFDESCR */ #ifdef SIOCGIFDESCR /* * Get the description for the interface. */ memset(&ifrdesc, 0, sizeof ifrdesc); strlcpy(ifrdesc.ifr_name, name, sizeof ifrdesc.ifr_name); s = socket(AF_INET, SOCK_DGRAM, 0); if (s >= 0) { #ifdef __FreeBSD__ /* * On FreeBSD, if the buffer isn't big enough for the * description, the ioctl succeeds, but the description * isn't copied, ifr_buffer.length is set to the description * length, and ifr_buffer.buffer is set to NULL. */ for (;;) { free(description); if ((description = malloc(descrlen)) != NULL) { ifrdesc.ifr_buffer.buffer = description; ifrdesc.ifr_buffer.length = descrlen; if (ioctl(s, SIOCGIFDESCR, &ifrdesc) == 0) { if (ifrdesc.ifr_buffer.buffer == description) break; else descrlen = ifrdesc.ifr_buffer.length; } else { /* * Failed to get interface description. */ free(description); description = NULL; break; } } else break; } #else /* __FreeBSD__ */ /* * The only other OS that currently supports * SIOCGIFDESCR is OpenBSD, and it has no way * to get the description length - it's clamped * to a maximum of IFDESCRSIZE. */ if ((description = malloc(descrlen)) != NULL) { ifrdesc.ifr_data = (caddr_t)description; if (ioctl(s, SIOCGIFDESCR, &ifrdesc) != 0) { /* * Failed to get interface description. */ free(description); description = NULL; } } #endif /* __FreeBSD__ */ close(s); if (description != NULL && strlen(description) == 0) { free(description); description = NULL; } } #endif /* SIOCGIFDESCR */ if (add_or_find_if(&curdev, alldevs, name, flags, description, errbuf) == -1) { free(description); /* * Error - give up. */ return (-1); } free(description); if (curdev == NULL) { /* * Device wasn't added because it can't be opened. * Not a fatal error. */ return (0); } /* * "curdev" is an entry for this interface; add an entry for this * address to its list of addresses. * * Allocate the new entry and fill it in. */ curaddr = malloc(sizeof(pcap_addr_t)); if (curaddr == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); return (-1); } curaddr->next = NULL; if (addr != NULL) { curaddr->addr = dup_sockaddr(addr, addr_size); if (curaddr->addr == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); free(curaddr); return (-1); } } else curaddr->addr = NULL; if (netmask != NULL) { curaddr->netmask = dup_sockaddr(netmask, netmask_size); if (curaddr->netmask == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); if (curaddr->addr != NULL) free(curaddr->addr); free(curaddr); return (-1); } } else curaddr->netmask = NULL; if (broadaddr != NULL) { curaddr->broadaddr = dup_sockaddr(broadaddr, broadaddr_size); if (curaddr->broadaddr == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); if (curaddr->netmask != NULL) free(curaddr->netmask); if (curaddr->addr != NULL) free(curaddr->addr); free(curaddr); return (-1); } } else curaddr->broadaddr = NULL; if (dstaddr != NULL) { curaddr->dstaddr = dup_sockaddr(dstaddr, dstaddr_size); if (curaddr->dstaddr == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); if (curaddr->broadaddr != NULL) free(curaddr->broadaddr); if (curaddr->netmask != NULL) free(curaddr->netmask); if (curaddr->addr != NULL) free(curaddr->addr); free(curaddr); return (-1); } } else curaddr->dstaddr = NULL; /* * Find the end of the list of addresses. */ for (prevaddr = curdev->addresses; prevaddr != NULL; prevaddr = nextaddr) { nextaddr = prevaddr->next; if (nextaddr == NULL) { /* * This is the end of the list. */ break; } } if (prevaddr == NULL) { /* * The list was empty; this is the first member. */ curdev->addresses = curaddr; } else { /* * "prevaddr" is the last member of the list; append * this member to it. */ prevaddr->next = curaddr; } return (0); } int pcap_add_if(pcap_if_t **devlist, const char *name, u_int flags, const char *description, char *errbuf) { pcap_if_t *curdev; return (add_or_find_if(&curdev, devlist, name, flags, description, errbuf)); } /* * Free a list of interfaces. */ void pcap_freealldevs(pcap_if_t *alldevs) { pcap_if_t *curdev, *nextdev; pcap_addr_t *curaddr, *nextaddr; for (curdev = alldevs; curdev != NULL; curdev = nextdev) { nextdev = curdev->next; /* * Free all addresses. */ for (curaddr = curdev->addresses; curaddr != NULL; curaddr = nextaddr) { nextaddr = curaddr->next; if (curaddr->addr) free(curaddr->addr); if (curaddr->netmask) free(curaddr->netmask); if (curaddr->broadaddr) free(curaddr->broadaddr); if (curaddr->dstaddr) free(curaddr->dstaddr); free(curaddr); } /* * Free the name string. */ free(curdev->name); /* * Free the description string, if any. */ if (curdev->description != NULL) free(curdev->description); /* * Free the interface. */ free(curdev); } } #if !defined(WIN32) && !defined(MSDOS) /* * Return the name of a network interface attached to the system, or NULL * if none can be found. The interface must be configured up; the * lowest unit number is preferred; loopback is ignored. */ char * pcap_lookupdev(errbuf) register char *errbuf; { pcap_if_t *alldevs; /* for old BSD systems, including bsdi3 */ #ifndef IF_NAMESIZE #define IF_NAMESIZE IFNAMSIZ #endif static char device[IF_NAMESIZE + 1]; char *ret; if (pcap_findalldevs(&alldevs, errbuf) == -1) return (NULL); if (alldevs == NULL || (alldevs->flags & PCAP_IF_LOOPBACK)) { /* * There are no devices on the list, or the first device * on the list is a loopback device, which means there * are no non-loopback devices on the list. This means * we can't return any device. * * XXX - why not return a loopback device? If we can't * capture on it, it won't be on the list, and if it's * on the list, there aren't any non-loopback devices, * so why not just supply it as the default device? */ (void)strlcpy(errbuf, "no suitable device found", PCAP_ERRBUF_SIZE); ret = NULL; } else { /* * Return the name of the first device on the list. */ (void)strlcpy(device, alldevs->name, sizeof(device)); ret = device; } pcap_freealldevs(alldevs); return (ret); } int pcap_lookupnet(device, netp, maskp, errbuf) register const char *device; register bpf_u_int32 *netp, *maskp; register char *errbuf; { register int fd; register struct sockaddr_in *sin4; struct ifreq ifr; /* * The pseudo-device "any" listens on all interfaces and therefore * has the network address and -mask "0.0.0.0" therefore catching * all traffic. Using NULL for the interface is the same as "any". */ if (!device || strcmp(device, "any") == 0 #ifdef HAVE_DAG_API || strstr(device, "dag") != NULL #endif #ifdef HAVE_SEPTEL_API || strstr(device, "septel") != NULL #endif #ifdef PCAP_SUPPORT_BT || strstr(device, "bluetooth") != NULL #endif #ifdef PCAP_SUPPORT_USB || strstr(device, "usbmon") != NULL #endif +#ifdef PCAP_SUPPORT_NETMAP + || !strncmp(device, "netmap:", 7) + || !strncmp(device, "vale", 4) +#endif #ifdef HAVE_SNF_API || strstr(device, "snf") != NULL #endif ) { *netp = *maskp = 0; return 0; } fd = socket(AF_INET, SOCK_DGRAM, 0); if (fd < 0) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "socket: %s", pcap_strerror(errno)); return (-1); } memset(&ifr, 0, sizeof(ifr)); #ifdef linux /* XXX Work around Linux kernel bug */ ifr.ifr_addr.sa_family = AF_INET; #endif (void)strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); if (ioctl(fd, SIOCGIFADDR, (char *)&ifr) < 0) { if (errno == EADDRNOTAVAIL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: no IPv4 address assigned", device); } else { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "SIOCGIFADDR: %s: %s", device, pcap_strerror(errno)); } (void)close(fd); return (-1); } sin4 = (struct sockaddr_in *)&ifr.ifr_addr; *netp = sin4->sin_addr.s_addr; memset(&ifr, 0, sizeof(ifr)); #ifdef linux /* XXX Work around Linux kernel bug */ ifr.ifr_addr.sa_family = AF_INET; #endif (void)strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); if (ioctl(fd, SIOCGIFNETMASK, (char *)&ifr) < 0) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "SIOCGIFNETMASK: %s: %s", device, pcap_strerror(errno)); (void)close(fd); return (-1); } (void)close(fd); *maskp = sin4->sin_addr.s_addr; if (*maskp == 0) { if (IN_CLASSA(*netp)) *maskp = IN_CLASSA_NET; else if (IN_CLASSB(*netp)) *maskp = IN_CLASSB_NET; else if (IN_CLASSC(*netp)) *maskp = IN_CLASSC_NET; else { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "inet class for 0x%x unknown", *netp); return (-1); } } *netp &= *maskp; return (0); } #elif defined(WIN32) /* * Return the name of a network interface attached to the system, or NULL * if none can be found. The interface must be configured up; the * lowest unit number is preferred; loopback is ignored. */ char * pcap_lookupdev(errbuf) register char *errbuf; { DWORD dwVersion; DWORD dwWindowsMajorVersion; dwVersion = GetVersion(); /* get the OS version */ dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion))); if (dwVersion >= 0x80000000 && dwWindowsMajorVersion >= 4) { /* * Windows 95, 98, ME. */ ULONG NameLength = 8192; static char AdaptersName[8192]; if (PacketGetAdapterNames(AdaptersName,&NameLength) ) return (AdaptersName); else return NULL; } else { /* * Windows NT (NT 4.0, W2K, WXP). Convert the names to UNICODE for backward compatibility */ ULONG NameLength = 8192; static WCHAR AdaptersName[8192]; char *tAstr; WCHAR *tUstr; WCHAR *TAdaptersName = (WCHAR*)malloc(8192 * sizeof(WCHAR)); int NAdapts = 0; if(TAdaptersName == NULL) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "memory allocation failure"); return NULL; } if ( !PacketGetAdapterNames((PTSTR)TAdaptersName,&NameLength) ) { (void)snprintf(errbuf, PCAP_ERRBUF_SIZE, "PacketGetAdapterNames: %s", pcap_win32strerror()); free(TAdaptersName); return NULL; } tAstr = (char*)TAdaptersName; tUstr = (WCHAR*)AdaptersName; /* * Convert and copy the device names */ while(sscanf(tAstr, "%S", tUstr) > 0) { tAstr += strlen(tAstr) + 1; tUstr += wcslen(tUstr) + 1; NAdapts ++; } tAstr++; *tUstr = 0; tUstr++; /* * Copy the descriptions */ while(NAdapts--) { char* tmp = (char*)tUstr; strcpy(tmp, tAstr); tmp += strlen(tAstr) + 1; tUstr = (WCHAR*)tmp; tAstr += strlen(tAstr) + 1; } free(TAdaptersName); return (char *)(AdaptersName); } } int pcap_lookupnet(device, netp, maskp, errbuf) register const char *device; register bpf_u_int32 *netp, *maskp; register char *errbuf; { /* * We need only the first IPv4 address, so we must scan the array returned by PacketGetNetInfo() * in order to skip non IPv4 (i.e. IPv6 addresses) */ npf_if_addr if_addrs[MAX_NETWORK_ADDRESSES]; LONG if_addr_size = 1; struct sockaddr_in *t_addr; unsigned int i; if (!PacketGetNetInfoEx((void *)device, if_addrs, &if_addr_size)) { *netp = *maskp = 0; return (0); } for(i=0; isin_addr.S_un.S_addr; t_addr = (struct sockaddr_in *) &(if_addrs[i].SubnetMask); *maskp = t_addr->sin_addr.S_un.S_addr; *netp &= *maskp; return (0); } } *netp = *maskp = 0; return (0); } #endif /* !WIN32 && !MSDOS */ Index: stable/10/contrib/libpcap/pcap.c =================================================================== --- stable/10/contrib/libpcap/pcap.c (revision 277721) +++ stable/10/contrib/libpcap/pcap.c (revision 277722) @@ -1,1808 +1,1815 @@ /* * 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 1.128 2008-12-23 20:13:29 guy Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif #ifdef WIN32 #include #else /* WIN32 */ #if HAVE_INTTYPES_H #include #elif HAVE_STDINT_H #include #endif #ifdef HAVE_SYS_BITYPES_H #include #endif #include #include #endif /* WIN32 */ #include #include #include #if !defined(_MSC_VER) && !defined(__BORLANDC__) && !defined(__MINGW32__) #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 "pcap-dag.h" #endif /* HAVE_DAG_API */ #ifdef HAVE_SEPTEL_API #include "pcap-septel.h" #endif /* HAVE_SEPTEL_API */ #ifdef HAVE_SNF_API #include "pcap-snf.h" #endif /* HAVE_SNF_API */ #ifdef PCAP_SUPPORT_USB #include "pcap-usb-linux.h" #endif #ifdef PCAP_SUPPORT_BT #include "pcap-bt-linux.h" #endif #ifdef PCAP_SUPPORT_CAN #include "pcap-can-linux.h" #endif #ifdef PCAP_SUPPORT_CANUSB #include "pcap-canusb-linux.h" #endif #ifdef PCAP_SUPPORT_NETFILTER #include "pcap-netfilter-linux.h" #endif +#ifdef PCAP_SUPPORT_NETMAP +pcap_t* pcap_netmap_create(const char *device, char *ebuf, int *is_ours); +#endif + int pcap_not_initialized(pcap_t *pcap) { /* this means 'not initialized' */ return (PCAP_ERROR_NOT_ACTIVATED); } /* * Returns 1 if rfmon mode can be set on the pcap_t, 0 if it can't, * a PCAP_ERROR value on an error. */ int pcap_can_set_rfmon(pcap_t *p) { return (p->can_set_rfmon_op(p)); } /* * For systems where rfmon mode is never supported. */ static int pcap_cant_set_rfmon(pcap_t *p _U_) { return (0); } /* * Sets *tstamp_typesp to point to an array 1 or more supported time stamp * types; the return value is the number of supported time stamp types. * The list should be freed by a call to pcap_free_tstamp_types() when * you're done with it. * * A return value of 0 means "you don't get a choice of time stamp type", * in which case *tstamp_typesp is set to null. * * PCAP_ERROR is returned on error. */ int pcap_list_tstamp_types(pcap_t *p, int **tstamp_typesp) { if (p->tstamp_type_count == 0) { /* * We don't support multiple time stamp types. */ *tstamp_typesp = NULL; } else { *tstamp_typesp = (int*)calloc(sizeof(**tstamp_typesp), p->tstamp_type_count); if (*tstamp_typesp == NULL) { (void)snprintf(p->errbuf, sizeof(p->errbuf), "malloc: %s", pcap_strerror(errno)); return (PCAP_ERROR); } (void)memcpy(*tstamp_typesp, p->tstamp_type_list, sizeof(**tstamp_typesp) * p->tstamp_type_count); } return (p->tstamp_type_count); } /* * In Windows, you might have a library built with one version of the * C runtime library and an application built with another version of * the C runtime library, which means that the library might use one * version of malloc() and free() and the application might use another * version of malloc() and free(). If so, that means something * allocated by the library cannot be freed by the application, so we * need to have a pcap_free_tstamp_types() routine to free up the list * allocated by pcap_list_tstamp_types(), even though it's just a wrapper * around free(). */ void pcap_free_tstamp_types(int *tstamp_type_list) { free(tstamp_type_list); } /* * Default one-shot callback; overridden for capture types where the * packet data cannot be guaranteed to be available after the callback * returns, so that a copy must be made. */ static void pcap_oneshot(u_char *user, const struct pcap_pkthdr *h, const u_char *pkt) { struct oneshot_userdata *sp = (struct oneshot_userdata *)user; *sp->hdr = *h; *sp->pkt = pkt; } const u_char * pcap_next(pcap_t *p, struct pcap_pkthdr *h) { struct oneshot_userdata s; const u_char *pkt; s.hdr = h; s.pkt = &pkt; s.pd = p; if (pcap_dispatch(p, 1, p->oneshot_callback, (u_char *)&s) <= 0) return (0); return (pkt); } int pcap_next_ex(pcap_t *p, struct pcap_pkthdr **pkt_header, const u_char **pkt_data) { struct oneshot_userdata s; s.hdr = &p->pcap_header; s.pkt = pkt_data; s.pd = p; /* 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, p->oneshot_callback, (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, p->oneshot_callback, (u_char *)&s)); } #if defined(DAG_ONLY) int pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) { return (dag_findalldevs(alldevsp, errbuf)); } pcap_t * pcap_create(const char *source, char *errbuf) { return (dag_create(source, errbuf)); } #elif defined(SEPTEL_ONLY) int pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) { return (septel_findalldevs(alldevsp, errbuf)); } pcap_t * pcap_create(const char *source, char *errbuf) { return (septel_create(source, errbuf)); } #elif defined(SNF_ONLY) int pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) { return (snf_findalldevs(alldevsp, errbuf)); } pcap_t * pcap_create(const char *source, char *errbuf) { return (snf_create(source, errbuf)); } #else /* regular pcap */ struct capture_source_type { int (*findalldevs_op)(pcap_if_t **, char *); pcap_t *(*create_op)(const char *, char *, int *); } capture_source_types[] = { +#ifdef PCAP_SUPPORT_NETMAP + { NULL, pcap_netmap_create }, +#endif #ifdef HAVE_DAG_API { dag_findalldevs, dag_create }, #endif #ifdef HAVE_SEPTEL_API { septel_findalldevs, septel_create }, #endif #ifdef HAVE_SNF_API { snf_findalldevs, snf_create }, #endif #ifdef PCAP_SUPPORT_BT { bt_findalldevs, bt_create }, #endif #if PCAP_SUPPORT_CANUSB { canusb_findalldevs, canusb_create }, #endif #ifdef PCAP_SUPPORT_CAN { can_findalldevs, can_create }, #endif #ifdef PCAP_SUPPORT_USB { usb_findalldevs, usb_create }, #endif #ifdef PCAP_SUPPORT_NETFILTER { netfilter_findalldevs, netfilter_create }, #endif { NULL, NULL } }; /* * Get a list of all capture sources that are up and that we can open. * Returns -1 on error, 0 otherwise. * The list, as returned through "alldevsp", may be null if no interfaces * were up and could be opened. */ int pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf) { size_t i; /* * Get the list of regular interfaces first. */ if (pcap_findalldevs_interfaces(alldevsp, errbuf) == -1) return (-1); /* failure */ /* * Add any interfaces that need a platform-specific mechanism * to find. */ if (pcap_platform_finddevs(alldevsp, errbuf) == -1) { /* * We had an error; free the list we've been * constructing. */ if (*alldevsp != NULL) { pcap_freealldevs(*alldevsp); *alldevsp = NULL; } return (-1); } /* * Ask each of the non-local-network-interface capture * source types what interfaces they have. */ for (i = 0; capture_source_types[i].findalldevs_op != NULL; i++) { if (capture_source_types[i].findalldevs_op(alldevsp, errbuf) == -1) { /* * We had an error; free the list we've been * constructing. */ if (*alldevsp != NULL) { pcap_freealldevs(*alldevsp); *alldevsp = NULL; } return (-1); } } return (0); } pcap_t * pcap_create(const char *source, char *errbuf) { size_t i; int is_theirs; pcap_t *p; /* * A null source name is equivalent to the "any" device - * which might not be supported on this platform, but * this means that you'll get a "not supported" error * rather than, say, a crash when we try to dereference * the null pointer. */ if (source == NULL) source = "any"; /* * Try each of the non-local-network-interface capture * source types until we find one that works for this * device or run out of types. */ for (i = 0; capture_source_types[i].create_op != NULL; i++) { is_theirs = 0; p = capture_source_types[i].create_op(source, errbuf, &is_theirs); if (is_theirs) { /* * The device name refers to a device of the * type in question; either it succeeded, * in which case p refers to a pcap_t to * later activate for the device, or it * failed, in which case p is null and we * should return that to report the failure * to create. */ return (p); } } /* * OK, try it as a regular network interface. */ return (pcap_create_interface(source, errbuf)); } #endif static void initialize_ops(pcap_t *p) { /* * Set operation pointers for operations that only work on * an activated pcap_t to point to a routine that returns * a "this isn't activated" error. */ p->read_op = (read_op_t)pcap_not_initialized; p->inject_op = (inject_op_t)pcap_not_initialized; p->setfilter_op = (setfilter_op_t)pcap_not_initialized; p->setdirection_op = (setdirection_op_t)pcap_not_initialized; p->set_datalink_op = (set_datalink_op_t)pcap_not_initialized; p->getnonblock_op = (getnonblock_op_t)pcap_not_initialized; p->setnonblock_op = (setnonblock_op_t)pcap_not_initialized; p->stats_op = (stats_op_t)pcap_not_initialized; #ifdef WIN32 p->setbuff_op = (setbuff_op_t)pcap_not_initialized; p->setmode_op = (setmode_op_t)pcap_not_initialized; p->setmintocopy_op = (setmintocopy_op_t)pcap_not_initialized; #endif /* * Default cleanup operation - implementations can override * this, but should call pcap_cleanup_live_common() after * doing their own additional cleanup. */ p->cleanup_op = pcap_cleanup_live_common; /* * In most cases, the standard one-short callback can * be used for pcap_next()/pcap_next_ex(). */ p->oneshot_callback = pcap_oneshot; } pcap_t * pcap_create_common(const char *source, char *ebuf) { pcap_t *p; p = malloc(sizeof(*p)); if (p == NULL) { snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); return (NULL); } memset(p, 0, sizeof(*p)); #ifndef WIN32 p->fd = -1; /* not opened yet */ p->selectable_fd = -1; p->send_fd = -1; #endif p->opt.source = strdup(source); if (p->opt.source == NULL) { snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno)); free(p); return (NULL); } /* * Default to "can't set rfmon mode"; if it's supported by * a platform, the create routine that called us can set * the op to its routine to check whether a particular * device supports it. */ p->can_set_rfmon_op = pcap_cant_set_rfmon; initialize_ops(p); /* put in some defaults*/ pcap_set_timeout(p, 0); pcap_set_snaplen(p, 65535); /* max packet size */ p->opt.promisc = 0; p->opt.buffer_size = 0; p->opt.tstamp_type = -1; /* default to not setting time stamp type */ return (p); } int pcap_check_activated(pcap_t *p) { if (p->activated) { snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "can't perform " " operation on activated capture"); return (-1); } return (0); } int pcap_set_snaplen(pcap_t *p, int snaplen) { if (pcap_check_activated(p)) return (PCAP_ERROR_ACTIVATED); p->snapshot = snaplen; return (0); } int pcap_set_promisc(pcap_t *p, int promisc) { if (pcap_check_activated(p)) return (PCAP_ERROR_ACTIVATED); p->opt.promisc = promisc; return (0); } int pcap_set_rfmon(pcap_t *p, int rfmon) { if (pcap_check_activated(p)) return (PCAP_ERROR_ACTIVATED); p->opt.rfmon = rfmon; return (0); } int pcap_set_timeout(pcap_t *p, int timeout_ms) { if (pcap_check_activated(p)) return (PCAP_ERROR_ACTIVATED); p->md.timeout = timeout_ms; return (0); } int pcap_set_tstamp_type(pcap_t *p, int tstamp_type) { int i; if (pcap_check_activated(p)) return (PCAP_ERROR_ACTIVATED); /* * If p->tstamp_type_count is 0, we don't support setting * the time stamp type at all. */ if (p->tstamp_type_count == 0) return (PCAP_ERROR_CANTSET_TSTAMP_TYPE); /* * Check whether we claim to support this type of time stamp. */ for (i = 0; i < p->tstamp_type_count; i++) { if (p->tstamp_type_list[i] == tstamp_type) { /* * Yes. */ p->opt.tstamp_type = tstamp_type; return (0); } } /* * No. We support setting the time stamp type, but not to this * particular value. */ return (PCAP_WARNING_TSTAMP_TYPE_NOTSUP); } int pcap_set_buffer_size(pcap_t *p, int buffer_size) { if (pcap_check_activated(p)) return (PCAP_ERROR_ACTIVATED); p->opt.buffer_size = buffer_size; return (0); } int pcap_activate(pcap_t *p) { int status; /* * Catch attempts to re-activate an already-activated * pcap_t; this should, for example, catch code that * calls pcap_open_live() followed by pcap_activate(), * as some code that showed up in a Stack Exchange * question did. */ if (pcap_check_activated(p)) return (PCAP_ERROR_ACTIVATED); status = p->activate_op(p); if (status >= 0) p->activated = 1; else { if (p->errbuf[0] == '\0') { /* * No error message supplied by the activate routine; * for the benefit of programs that don't specially * handle errors other than PCAP_ERROR, return the * error message corresponding to the status. */ snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "%s", pcap_statustostr(status)); } /* * Undo any operation pointer setting, etc. done by * the activate operation. */ initialize_ops(p); } return (status); } pcap_t * pcap_open_live(const char *source, int snaplen, int promisc, int to_ms, char *errbuf) { pcap_t *p; int status; p = pcap_create(source, errbuf); if (p == NULL) return (NULL); status = pcap_set_snaplen(p, snaplen); if (status < 0) goto fail; status = pcap_set_promisc(p, promisc); if (status < 0) goto fail; status = pcap_set_timeout(p, to_ms); if (status < 0) goto fail; /* * Mark this as opened with pcap_open_live(), so that, for * example, we show the full list of DLT_ values, rather * than just the ones that are compatible with capturing * when not in monitor mode. That allows existing applications * to work the way they used to work, but allows new applications * that know about the new open API to, for example, find out the * DLT_ values that they can select without changing whether * the adapter is in monitor mode or not. */ p->oldstyle = 1; status = pcap_activate(p); if (status < 0) goto fail; return (p); fail: if (status == PCAP_ERROR) snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s", source, p->errbuf); else if (status == PCAP_ERROR_NO_SUCH_DEVICE || status == PCAP_ERROR_PERM_DENIED || status == PCAP_ERROR_PROMISC_PERM_DENIED) snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s (%s)", source, pcap_statustostr(status), p->errbuf); else snprintf(errbuf, PCAP_ERRBUF_SIZE, "%s: %s", source, pcap_statustostr(status)); pcap_close(p); return (NULL); } 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); } } } /* * 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_datalink_ext(pcap_t *p) { return (p->linktype_ext); } 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); } } /* * In Windows, you might have a library built with one version of the * C runtime library and an application built with another version of * the C runtime library, which means that the library might use one * version of malloc() and free() and the application might use another * version of malloc() and free(). If so, that means something * allocated by the library cannot be freed by the application, so we * need to have a pcap_free_datalinks() routine to free up the list * allocated by pcap_list_datalinks(), even though it's just a wrapper * around free(). */ void pcap_free_datalinks(int *dlt_list) { free(dlt_list); } 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); } /* * 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]); } 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, "BSD 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_SYMANTEC_FIREWALL, "Symantec Firewall"), 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_PFSYNC, "Packet filter state syncing"), 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 radiotap header"), DLT_CHOICE(DLT_ARCNET_LINUX, "Linux ARCNET"), DLT_CHOICE(DLT_JUNIPER_MLPPP, "Juniper Multi-Link PPP"), DLT_CHOICE(DLT_JUNIPER_MLFR, "Juniper Multi-Link Frame Relay"), DLT_CHOICE(DLT_JUNIPER_ES, "Juniper Encryption Services PIC"), DLT_CHOICE(DLT_JUNIPER_GGSN, "Juniper GGSN PIC"), DLT_CHOICE(DLT_JUNIPER_MFR, "Juniper FRF.16 Frame Relay"), DLT_CHOICE(DLT_JUNIPER_ATM2, "Juniper ATM2 PIC"), DLT_CHOICE(DLT_JUNIPER_SERVICES, "Juniper Advanced Services PIC"), DLT_CHOICE(DLT_JUNIPER_ATM1, "Juniper ATM1 PIC"), DLT_CHOICE(DLT_APPLE_IP_OVER_IEEE1394, "Apple IP-over-IEEE 1394"), DLT_CHOICE(DLT_MTP2_WITH_PHDR, "SS7 MTP2 with Pseudo-header"), DLT_CHOICE(DLT_MTP2, "SS7 MTP2"), DLT_CHOICE(DLT_MTP3, "SS7 MTP3"), DLT_CHOICE(DLT_SCCP, "SS7 SCCP"), DLT_CHOICE(DLT_DOCSIS, "DOCSIS"), DLT_CHOICE(DLT_LINUX_IRDA, "Linux IrDA"), DLT_CHOICE(DLT_IEEE802_11_RADIO_AVS, "802.11 plus AVS radio information header"), DLT_CHOICE(DLT_JUNIPER_MONITOR, "Juniper Passive Monitor PIC"), 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_ERF_ETH, "Ethernet with Endace ERF header"), DLT_CHOICE(DLT_ERF_POS, "Packet-over-SONET with Endace ERF header"), DLT_CHOICE(DLT_LINUX_LAPD, "Linux vISDN LAPD"), 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_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_IEEE802_16_MAC_CPS, "IEEE 802.16 MAC Common Part Sublayer"), DLT_CHOICE(DLT_USB_LINUX, "USB with Linux header"), DLT_CHOICE(DLT_CAN20B, "Controller Area Network (CAN) v. 2.0B"), DLT_CHOICE(DLT_IEEE802_15_4_LINUX, "IEEE 802.15.4 with Linux padding"), DLT_CHOICE(DLT_PPI, "Per-Packet Information"), DLT_CHOICE(DLT_IEEE802_16_MAC_CPS_RADIO, "IEEE 802.16 MAC Common Part Sublayer plus radiotap header"), DLT_CHOICE(DLT_JUNIPER_ISM, "Juniper Integrated Service Module"), DLT_CHOICE(DLT_IEEE802_15_4, "IEEE 802.15.4 with FCS"), DLT_CHOICE(DLT_SITA, "SITA pseudo-header"), DLT_CHOICE(DLT_ERF, "Endace ERF header"), DLT_CHOICE(DLT_RAIF1, "Ethernet with u10 Networks pseudo-header"), DLT_CHOICE(DLT_IPMB, "IPMB"), DLT_CHOICE(DLT_JUNIPER_ST, "Juniper Secure Tunnel"), DLT_CHOICE(DLT_BLUETOOTH_HCI_H4_WITH_PHDR, "Bluetooth HCI UART transport layer plus pseudo-header"), DLT_CHOICE(DLT_AX25_KISS, "AX.25 with KISS header"), DLT_CHOICE(DLT_IEEE802_15_4_NONASK_PHY, "IEEE 802.15.4 with non-ASK PHY data"), DLT_CHOICE(DLT_MPLS, "MPLS with label as link-layer header"), DLT_CHOICE(DLT_USB_LINUX_MMAPPED, "USB with padded Linux header"), DLT_CHOICE(DLT_DECT, "DECT"), DLT_CHOICE(DLT_AOS, "AOS Space Data Link protocol"), DLT_CHOICE(DLT_WIHART, "Wireless HART"), DLT_CHOICE(DLT_FC_2, "Fibre Channel FC-2"), DLT_CHOICE(DLT_FC_2_WITH_FRAME_DELIMS, "Fibre Channel FC-2 with frame delimiters"), DLT_CHOICE(DLT_IPNET, "Solaris ipnet"), DLT_CHOICE(DLT_CAN_SOCKETCAN, "CAN-bus with SocketCAN headers"), DLT_CHOICE(DLT_IPV4, "Raw IPv4"), DLT_CHOICE(DLT_IPV6, "Raw IPv6"), DLT_CHOICE(DLT_IEEE802_15_4_NOFCS, "IEEE 802.15.4 without FCS"), DLT_CHOICE(DLT_JUNIPER_VS, "Juniper Virtual Server"), DLT_CHOICE(DLT_JUNIPER_SRX_E2E, "Juniper SRX E2E"), DLT_CHOICE(DLT_JUNIPER_FIBRECHANNEL, "Juniper Fibre Channel"), DLT_CHOICE(DLT_DVB_CI, "DVB-CI"), DLT_CHOICE(DLT_JUNIPER_ATM_CEMIC, "Juniper ATM CEMIC"), DLT_CHOICE(DLT_NFLOG, "Linux netfilter log messages"), DLT_CHOICE(DLT_NETANALYZER, "Ethernet with Hilscher netANALYZER pseudo-header"), DLT_CHOICE(DLT_NETANALYZER_TRANSPARENT, "Ethernet with Hilscher netANALYZER pseudo-header and with preamble and SFD"), DLT_CHOICE(DLT_IPOIB, "RFC 4391 IP-over-Infiniband"), DLT_CHOICE_SENTINEL }; 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); } struct tstamp_type_choice { const char *name; const char *description; int type; }; static struct tstamp_type_choice tstamp_type_choices[] = { { "host", "Host", PCAP_TSTAMP_HOST }, { "host_lowprec", "Host, low precision", PCAP_TSTAMP_HOST_LOWPREC }, { "host_hiprec", "Host, high precision", PCAP_TSTAMP_HOST_HIPREC }, { "adapter", "Adapter", PCAP_TSTAMP_ADAPTER }, { "adapter_unsynced", "Adapter, not synced with system time", PCAP_TSTAMP_ADAPTER_UNSYNCED }, { NULL, NULL, 0 } }; int pcap_tstamp_type_name_to_val(const char *name) { int i; for (i = 0; tstamp_type_choices[i].name != NULL; i++) { if (pcap_strcasecmp(tstamp_type_choices[i].name, name) == 0) return (tstamp_type_choices[i].type); } return (PCAP_ERROR); } const char * pcap_tstamp_type_val_to_name(int tstamp_type) { int i; for (i = 0; tstamp_type_choices[i].name != NULL; i++) { if (tstamp_type_choices[i].type == tstamp_type) return (tstamp_type_choices[i].name); } return (NULL); } const char * pcap_tstamp_type_val_to_description(int tstamp_type) { int i; for (i = 0; tstamp_type_choices[i].name != NULL; i++) { if (tstamp_type_choices[i].type == tstamp_type) return (tstamp_type_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) { int ret; ret = p->getnonblock_op(p, errbuf); if (ret == -1) { /* * In case somebody depended on the bug wherein * the error message was put into p->errbuf * by pcap_getnonblock_fd(). */ strlcpy(p->errbuf, errbuf, PCAP_ERRBUF_SIZE); } return (ret); } /* * 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(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) { int ret; ret = p->setnonblock_op(p, nonblock, errbuf); if (ret == -1) { /* * In case somebody depended on the bug wherein * the error message was put into p->errbuf * by pcap_setnonblock_fd(). */ strlcpy(p->errbuf, errbuf, PCAP_ERRBUF_SIZE); } return (ret); } #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(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(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 /* * Generate error strings for PCAP_ERROR_ and PCAP_WARNING_ values. */ const char * pcap_statustostr(int errnum) { static char ebuf[15+10+1]; switch (errnum) { case PCAP_WARNING: return("Generic warning"); case PCAP_WARNING_TSTAMP_TYPE_NOTSUP: return ("That type of time stamp is not supported by that device"); case PCAP_WARNING_PROMISC_NOTSUP: return ("That device doesn't support promiscuous mode"); case PCAP_ERROR: return("Generic error"); case PCAP_ERROR_BREAK: return("Loop terminated by pcap_breakloop"); case PCAP_ERROR_NOT_ACTIVATED: return("The pcap_t has not been activated"); case PCAP_ERROR_ACTIVATED: return ("The setting can't be changed after the pcap_t is activated"); case PCAP_ERROR_NO_SUCH_DEVICE: return ("No such device exists"); case PCAP_ERROR_RFMON_NOTSUP: return ("That device doesn't support monitor mode"); case PCAP_ERROR_NOT_RFMON: return ("That operation is supported only in monitor mode"); case PCAP_ERROR_PERM_DENIED: return ("You don't have permission to capture on that device"); case PCAP_ERROR_IFACE_NOT_UP: return ("That device is not up"); case PCAP_ERROR_CANTSET_TSTAMP_TYPE: return ("That device doesn't support setting the time stamp type"); case PCAP_ERROR_PROMISC_PERM_DENIED: return ("You don't have permission to capture in promiscuous mode on that device"); } (void)snprintf(ebuf, sizeof ebuf, "Unknown error: %d", errnum); return(ebuf); } /* * 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[15+10+1]; 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); } #ifdef WIN32 int pcap_setbuff(pcap_t *p, int dim) { return (p->setbuff_op(p, dim)); } static int pcap_setbuff_dead(pcap_t *p, int dim) { snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "The kernel buffer size cannot be set on a pcap_open_dead pcap_t"); return (-1); } int pcap_setmode(pcap_t *p, int mode) { return (p->setmode_op(p, mode)); } static int pcap_setmode_dead(pcap_t *p, int mode) { snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "impossible to set mode on a pcap_open_dead pcap_t"); return (-1); } int pcap_setmintocopy(pcap_t *p, int size) { return (p->setmintocopy_op(p, size)); } static int pcap_setmintocopy_dead(pcap_t *p, int size) { snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "The mintocopy parameter cannot be set on a pcap_open_dead pcap_t"); return (-1); } #endif /* * On some platforms, we need to clean up promiscuous or monitor mode * when we close a device - and we want that to happen even if the * application just exits without explicitl closing devices. * On those platforms, we need to register a "close all the pcaps" * routine to be called when we exit, and need to maintain a list of * pcaps that need to be closed to clean up modes. * * XXX - not thread-safe. */ /* * List of pcaps on which we've done something that needs to be * cleaned up. * If there are any such pcaps, we arrange to call "pcap_close_all()" * when we exit, and have it close all of them. */ static struct pcap *pcaps_to_close; /* * TRUE if we've already called "atexit()" to cause "pcap_close_all()" to * be called on exit. */ static int did_atexit; static void pcap_close_all(void) { struct pcap *handle; while ((handle = pcaps_to_close) != NULL) pcap_close(handle); } int pcap_do_addexit(pcap_t *p) { /* * If we haven't already done so, arrange to have * "pcap_close_all()" called when we exit. */ if (!did_atexit) { if (atexit(pcap_close_all) == -1) { /* * "atexit()" failed; let our caller know. */ strncpy(p->errbuf, "atexit failed", PCAP_ERRBUF_SIZE); return (0); } did_atexit = 1; } return (1); } void pcap_add_to_pcaps_to_close(pcap_t *p) { p->md.next = pcaps_to_close; pcaps_to_close = p; } void pcap_remove_from_pcaps_to_close(pcap_t *p) { pcap_t *pc, *prevpc; for (pc = pcaps_to_close, prevpc = NULL; pc != NULL; prevpc = pc, pc = pc->md.next) { if (pc == p) { /* * Found it. Remove it from the list. */ if (prevpc == NULL) { /* * It was at the head of the list. */ pcaps_to_close = pc->md.next; } else { /* * It was in the middle of the list. */ prevpc->md.next = pc->md.next; } break; } } } void pcap_cleanup_live_common(pcap_t *p) { if (p->buffer != NULL) { free(p->buffer); p->buffer = NULL; } if (p->dlt_list != NULL) { free(p->dlt_list); p->dlt_list = NULL; p->dlt_count = 0; } if (p->tstamp_type_list != NULL) { free(p->tstamp_type_list); p->tstamp_type_list = NULL; p->tstamp_type_count = 0; } pcap_freecode(&p->fcode); #if !defined(WIN32) && !defined(MSDOS) if (p->fd >= 0) { close(p->fd); p->fd = -1; } p->selectable_fd = -1; p->send_fd = -1; #endif } static void pcap_cleanup_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; #ifdef WIN32 p->setbuff_op = pcap_setbuff_dead; p->setmode_op = pcap_setmode_dead; p->setmintocopy_op = pcap_setmintocopy_dead; #endif p->cleanup_op = pcap_cleanup_dead; p->activated = 1; 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) { if (p->opt.source != NULL) free(p->opt.source); p->cleanup_op(p); free(p); } /* * Given a BPF program, a pcap_pkthdr structure for a packet, and the raw * data for the packet, check whether the packet passes the filter. * Returns the return value of the filter program, which will be zero if * the packet doesn't pass and non-zero if the packet does pass. */ int pcap_offline_filter(const struct bpf_program *fp, const struct pcap_pkthdr *h, const u_char *pkt) { const struct bpf_insn *fcode = fp->bf_insns; if (fcode != NULL) return (bpf_filter(fcode, pkt, h->len, h->caplen)); else return (0); } /* * 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 1.x.y"; #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 Index: stable/10/lib/libpcap/Makefile =================================================================== --- stable/10/lib/libpcap/Makefile (revision 277721) +++ stable/10/lib/libpcap/Makefile (revision 277722) @@ -1,144 +1,145 @@ # Makefile for libpcap # $FreeBSD$ SHLIBDIR?= /lib .include LIB= pcap SRCS= grammar.y tokdefs.h version.h pcap-bpf.c \ + pcap-netmap.c \ pcap.c pcap-common.c inet.c fad-getad.c gencode.c optimize.c nametoaddr.c \ etherent.c savefile.c bpf_filter.c bpf_image.c bpf_dump.c \ scanner.l sf-pcap.c sf-pcap-ng.c version.c # Old compatibility headers INCS= pcap.h pcap-int.h pcap-namedb.h pcap-bpf.h PCAPINCS= pcap/pcap.h pcap/namedb.h pcap/bpf.h PCAPINCSDIR= ${INCLUDEDIR}/pcap INCSGROUPS= INCS PCAPINCS MAN= pcap.3 \ pcap_activate.3 \ pcap_breakloop.3 \ pcap_can_set_rfmon.3 \ pcap_close.3 \ pcap_compile.3 \ pcap_create.3 \ pcap_datalink.3 \ pcap_datalink_name_to_val.3 \ pcap_datalink_val_to_name.3 \ pcap_dump.3 \ pcap_dump_close.3 \ pcap_dump_file.3 \ pcap_dump_flush.3 \ pcap_dump_ftell.3 \ pcap_dump_open.3 \ pcap_file.3 \ pcap_fileno.3 \ pcap_findalldevs.3 \ pcap_freecode.3 \ pcap_get_selectable_fd.3 \ pcap_geterr.3 \ pcap_inject.3 \ pcap_is_swapped.3 \ pcap_lib_version.3 \ pcap_list_datalinks.3 \ pcap_list_tstamp_types.3 \ pcap_lookupdev.3 \ pcap_lookupnet.3 \ pcap_loop.3 \ pcap_major_version.3 \ pcap_next_ex.3 \ pcap_offline_filter.3 \ pcap_open_dead.3 \ pcap_open_live.3 \ pcap_open_offline.3 \ pcap_set_buffer_size.3 \ pcap_set_datalink.3 \ pcap_set_promisc.3 \ pcap_set_rfmon.3 \ pcap_set_snaplen.3 \ pcap_set_timeout.3 \ pcap_set_tstamp_type.3 \ pcap_setdirection.3 \ pcap_setfilter.3 \ pcap_setnonblock.3 \ pcap_snapshot.3 \ pcap_stats.3 \ pcap_statustostr.3 \ pcap_strerror.3 \ pcap-savefile.5 \ pcap_tstamp_type_name_to_val.3 \ pcap_tstamp_type_val_to_name.3 \ pcap-filter.7 \ pcap-linktype.7 MLINKS= pcap_datalink_val_to_name.3 pcap_datalink_val_to_description.3 \ pcap_dump_open.3 pcap_dump_fopen.3 \ pcap_findalldevs.3 pcap_freealldevs.3 \ pcap_geterr.3 pcap_perror.3 \ pcap_inject.3 pcap_sendpacket.3 \ pcap_list_datalinks.3 pcap_free_datalinks.3 \ pcap_list_tstamp_types.3 pcap_free_tstamp_types.3 \ pcap_loop.3 pcap_dispatch.3 \ pcap_major_version.3 pcap_minor_version.3 \ pcap_next_ex.3 pcap_next.3 \ pcap_open_offline.3 pcap_fopen_offline.3 \ pcap_setnonblock.3 pcap_getnonblock.3 # Our man pages are a special copy from the distdir. See below. CLEANFILES+=${MAN} CLEANFILES+=tokdefs.h version.h version.c YFLAGS+=-p pcapyy LFLAGS+=-Ppcapyy CFLAGS+=-DHAVE_CONFIG_H -Dyylval=pcapyylval -I${.CURDIR} -I. CFLAGS+=-D_U_="__attribute__((unused))" CFLAGS+=-DHAVE_SNPRINTF -DHAVE_VSNPRINTF .if ${MK_INET6_SUPPORT} != "no" CFLAGS+=-DINET6 .endif .if ${MK_PF} != "no" CFLAGS+=-DHAVE_NET_PFVAR_H .endif WARNS?= 0 SHLIB_MAJOR= 8 # # Magic to grab sources out of src/contrib # PCAP_DISTDIR?=${.CURDIR}/../../contrib/libpcap CFLAGS+=-I${PCAP_DISTDIR} .PATH: ${PCAP_DISTDIR} .PATH: ${PCAP_DISTDIR}/bpf/net version.c: ${PCAP_DISTDIR}/VERSION @rm -f $@ sed 's/.*/char pcap_version[] = "&";/' ${PCAP_DISTDIR}/VERSION > $@ version.h: ${PCAP_DISTDIR}/VERSION @rm -f $@ sed 's/.*/char pcap_version_string[] = "libpcap version &";/' ${PCAP_DISTDIR}/VERSION > $@ tokdefs.h: grammar.h ln -sf grammar.h tokdefs.h # # Magic to convert the man pages to something non Solarish # .for _page in ${MAN} ${_page}: if [ -f ${PCAP_DISTDIR}/${_page:S/3$/3pcap/} ]; then \ F=${_page:S/3$/3pcap/}; \ elif [ -f ${PCAP_DISTDIR}/${_page:S/5$/manfile/} ]; then \ F=${_page:S/5$/manfile/}; \ else \ F=${_page:S/7$/manmisc/}; \ fi; \ sed -e 's/3PCAP/3/g' ${PCAP_DISTDIR}/$$F > ${_page} .endfor .include Index: stable/10/lib/libpcap/config.h =================================================================== --- stable/10/lib/libpcap/config.h (revision 277721) +++ stable/10/lib/libpcap/config.h (revision 277722) @@ -1,332 +1,335 @@ /* $FreeBSD$ */ /* This is an edited copy of the config.h generated by configure. */ /* config.h. Generated from config.h.in by configure. */ /* config.h.in. Generated from configure.in by autoheader. */ /* Enable optimizer debugging */ /* #undef BDEBUG */ /* define if you have a cloning BPF device */ #define HAVE_CLONING_BPF 1 /* define if you have the DAG API */ /* #undef HAVE_DAG_API */ /* define if you have dag_get_erf_types() */ /* #undef HAVE_DAG_GET_ERF_TYPES */ /* define if you have dag_get_stream_erf_types() */ /* #undef HAVE_DAG_GET_STREAM_ERF_TYPES */ /* define if you have streams capable DAG API */ /* #undef HAVE_DAG_STREAMS_API */ /* define if you have vdag_set_device_info() */ /* #undef HAVE_DAG_VDAG */ /* Define to 1 if you have the declaration of `ether_hostton', and to 0 if you don't. */ #define HAVE_DECL_ETHER_HOSTTON 1 /* define if you have a /dev/dlpi */ /* #undef HAVE_DEV_DLPI */ /* if passive_req_t primitive exists */ /* #undef HAVE_DLPI_PASSIVE */ /* Define to 1 if you have the `ether_hostton' function. */ #define HAVE_ETHER_HOSTTON 1 /* Define to 1 if fseeko (and presumably ftello) exists and is declared. */ #define HAVE_FSEEKO 1 /* on HP-UX 10.20 or later */ /* #undef HAVE_HPUX10_20_OR_LATER */ /* on HP-UX 9.x */ /* #undef HAVE_HPUX9 */ /* if ppa_info_t_dl_module_id exists */ /* #undef HAVE_HP_PPA_INFO_T_DL_MODULE_ID_1 */ /* Define to 1 if you have the header file. */ #define HAVE_INTTYPES_H 1 /* if libdlpi exists */ /* #undef HAVE_LIBDLPI */ /* if libnl exists */ /* #undef HAVE_LIBNL */ /* if libnl exists and is version 2.x */ /* #undef HAVE_LIBNL_2_x */ /* if libnl exists and is version 3.x */ /* #undef HAVE_LIBNL_3_x */ /* libnl has NLE_FAILURE */ /* #undef HAVE_LIBNL_NLE */ /* libnl has new-style socket api */ /* #undef HAVE_LIBNL_SOCKETS */ /* Define to 1 if you have the header file. */ #define HAVE_LIMITS_H 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_LINUX_COMPILER_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_LINUX_ETHTOOL_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_LINUX_IF_PACKET_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_LINUX_NET_TSTAMP_H */ /* if tp_vlan_tci exists */ /* #undef HAVE_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI */ /* Define to 1 if you have the header file. */ /* #undef HAVE_LINUX_TYPES_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_LINUX_USBDEVICE_FS_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_LINUX_WIRELESS_H */ /* Define to 1 if you have the header file. */ #define HAVE_MEMORY_H 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_NETINET_ETHER_H */ /* Define to 1 if you have the header file. */ #define HAVE_NETINET_IF_ETHER_H 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_NETPACKET_IF_PACKET_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_NETPACKET_PACKET_H */ /* Define to 1 if you have the header file. */ #define HAVE_NET_IF_MEDIA_H 1 /* Define to 1 if you have the header file. */ /* See Makefile */ /* #undef HAVE_NET_PFVAR_H */ /* if there's an os_proto.h for this platform, to use additional prototypes */ /* #undef HAVE_OS_PROTO_H */ /* Define to 1 if you have the header file. */ #define HAVE_PATHS_H 1 /* define if net/pfvar.h defines PF_NAT through PF_NORDR */ #define HAVE_PF_NAT_THROUGH_PF_NORDR 1 /* define if you have a Septel API */ /* #undef HAVE_SEPTEL_API */ /* define if you have Myricom SNF API */ /* #undef HAVE_SNF_API */ /* Define to 1 if you have the `snprintf' function. */ #define HAVE_SNPRINTF 1 /* if struct sockaddr has the sa_len member */ #define HAVE_SOCKADDR_SA_LEN 1 /* if struct sockaddr_storage exists */ #define HAVE_SOCKADDR_STORAGE 1 /* define if socklen_t is defined */ #define HAVE_SOCKLEN_T 1 /* On solaris */ /* #undef HAVE_SOLARIS */ /* Define to 1 if you have the header file. */ #define HAVE_STDINT_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STDLIB_H 1 /* Define to 1 if you have the `strerror' function. */ #define HAVE_STRERROR 1 /* Define to 1 if you have the header file. */ #define HAVE_STRINGS_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STRING_H 1 /* Define to 1 if you have the `strlcpy' function. */ #define HAVE_STRLCPY 1 /* Define to 1 if the system has the type `struct BPF_TIMEVAL'. */ /* #undef HAVE_STRUCT_BPF_TIMEVAL */ /* Define to 1 if the system has the type `struct ether_addr'. */ /* #undef HAVE_STRUCT_ETHER_ADDR */ /* Define to 1 if you have the header file. */ /* #undef HAVE_SYS_BITYPES_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_SYS_BUFMOD_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_SYS_DLPI_EXT_H */ /* Define to 1 if you have the header file. */ #define HAVE_SYS_IOCCOM_H 1 /* Define to 1 if you have the header file. */ #define HAVE_SYS_SOCKIO_H 1 /* Define to 1 if you have the header file. */ #define HAVE_SYS_STAT_H 1 /* Define to 1 if you have the header file. */ #define HAVE_SYS_TYPES_H 1 /* if if_packet.h has tpacket_stats defined */ /* #undef HAVE_TPACKET_STATS */ /* Define to 1 if you have the header file. */ #define HAVE_UNISTD_H 1 /* if struct usbdevfs_ctrltransfer has bRequestType */ /* #undef HAVE_USBDEVFS_CTRLTRANSFER_BREQUESTTYPE */ /* define if version.h is generated in the build procedure */ #define HAVE_VERSION_H 1 /* Define to 1 if you have the `vsnprintf' function. */ #define HAVE_VSNPRINTF 1 /* define if the system supports zerocopy BPF */ #define HAVE_ZEROCOPY_BPF 1 /* define if your compiler has __attribute__ */ #define HAVE___ATTRIBUTE__ 1 /* IPv6 */ /* See Makefile */ /* #undef INET6 */ /* if unaligned access fails */ /* #undef LBL_ALIGN */ /* path for device for USB sniffing */ /* #undef LINUX_USB_MON_DEV */ /* if we need a pcap_parse wrapper around yyparse */ #define NEED_YYPARSE_WRAPPER /* Define to 1 if netinet/ether.h declares `ether_hostton' */ /* #undef NETINET_ETHER_H_DECLARES_ETHER_HOSTTON */ /* Define to 1 if netinet/if_ether.h declares `ether_hostton' */ #define NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON /* do not use protochain */ /* #undef NO_PROTOCHAIN */ /* Define to the address where bug reports for this package should be sent. */ #define PACKAGE_BUGREPORT "" /* Define to the full name of this package. */ #define PACKAGE_NAME "" /* Define to the full name and version of this package. */ #define PACKAGE_STRING "" /* Define to the one symbol short name of this package. */ #define PACKAGE_TARNAME "" /* Define to the version of this package. */ #define PACKAGE_VERSION "" /* /dev/dlpi directory */ /* #undef PCAP_DEV_PREFIX */ /* target host supports Bluetooth sniffing */ /* #undef PCAP_SUPPORT_BT */ /* target host supports CAN sniffing */ /* #undef PCAP_SUPPORT_CAN */ /* target host supports canusb */ /* #undef PCAP_SUPPORT_CANUSB */ /* target host supports netfilter sniffing */ /* #undef PCAP_SUPPORT_NETFILTER */ /* target host supports USB sniffing */ /* #undef PCAP_SUPPORT_USB */ +/* target host supports netmap */ +#define PCAP_SUPPORT_NETMAP 1 + /* include ACN support */ /* #undef SITA */ /* if struct sockaddr_hci has hci_channel member */ /* #undef SOCKADDR_HCI_HAS_HCI_CHANNEL */ /* Define to 1 if you have the ANSI C header files. */ #define STDC_HEADERS 1 /* Enable parser debugging */ /* #undef YYDEBUG */ /* Number of bits in a file offset, on hosts where this is settable. */ /* #undef _FILE_OFFSET_BITS */ /* needed on HP-UX */ /* #undef _HPUX_SOURCE */ /* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */ /* #undef _LARGEFILE_SOURCE */ /* Define for large files, on AIX-style hosts. */ /* #undef _LARGE_FILES */ /* define on AIX to get certain functions */ /* #undef _SUN */ /* to handle Ultrix compilers that don't support const in prototypes */ /* #undef const */ /* Define as token for inline if inlining supported */ #define inline inline /* Define to `short' if int16_t not defined. */ /* #undef int16_t */ /* Define to `int' if int32_t not defined. */ /* #undef int32_t */ /* Define to `long long' if int64_t not defined. */ /* #undef int64_t */ /* Define to `signed char' if int8_t not defined. */ /* #undef int8_t */ /* on sinix */ /* #undef sinix */ /* Define to `unsigned short' if u_int16_t not defined. */ /* #undef u_int16_t */ /* Define to `unsigned int' if u_int32_t not defined. */ /* #undef u_int32_t */ /* Define to `unsigned long long' if u_int64_t not defined. */ /* #undef u_int64_t */ /* Define to `unsigned char' if u_int8_t not defined. */ /* #undef u_int8_t */ Index: stable/10/lib/libpcap/pcap-netmap.c =================================================================== --- stable/10/lib/libpcap/pcap-netmap.c (nonexistent) +++ stable/10/lib/libpcap/pcap-netmap.c (revision 277722) @@ -0,0 +1,283 @@ +/* + * Copyright (C) 2014 Luigi Rizzo. 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include + +#define NETMAP_WITH_LIBS +#include + +#include "pcap-int.h" + +/* + * $FreeBSD$ + * + * This code is meant to build also on other versions of libpcap. + * + * older libpcap miss p->priv, use p->md.device instead (and allocate). + * Also opt.timeout was in md.timeout before. + * Use #define PCAP_IF_UP to discriminate + */ +#ifdef PCAP_IF_UP +#define NM_PRIV(p) ((struct pcap_netmap *)(p->priv)) +#define the_timeout opt.timeout +#else +#define HAVE_NO_PRIV +#define NM_PRIV(p) ((struct pcap_netmap *)(p->md.device)) +#define SET_PRIV(p, x) p->md.device = (void *)x +#define the_timeout md.timeout +#endif + +#if defined (linux) +/* On FreeBSD we use IFF_PPROMISC which is in ifr_flagshigh. + * remap to IFF_PROMISC on linux + */ +#define IFF_PPROMISC IFF_PROMISC +#endif /* linux */ + +struct pcap_netmap { + struct nm_desc *d; /* pointer returned by nm_open() */ + pcap_handler cb; /* callback and argument */ + u_char *cb_arg; + int must_clear_promisc; /* flag */ + uint64_t rx_pkts; /* # of pkts received before the filter */ +}; + + +static int +pcap_netmap_stats(pcap_t *p, struct pcap_stat *ps) +{ + struct pcap_netmap *pn = NM_PRIV(p); + + ps->ps_recv = pn->rx_pkts; + ps->ps_drop = 0; + ps->ps_ifdrop = 0; + return 0; +} + + +static void +pcap_netmap_filter(u_char *arg, struct pcap_pkthdr *h, const u_char *buf) +{ + pcap_t *p = (pcap_t *)arg; + struct pcap_netmap *pn = NM_PRIV(p); + const struct bpf_insn *pc = p->fcode.bf_insns; + + ++pn->rx_pkts; + if (pc == NULL || bpf_filter(pc, buf, h->len, h->caplen)) + pn->cb(pn->cb_arg, h, buf); +} + + +static int +pcap_netmap_dispatch(pcap_t *p, int cnt, pcap_handler cb, u_char *user) +{ + int ret; + struct pcap_netmap *pn = NM_PRIV(p); + struct nm_desc *d = pn->d; + struct pollfd pfd = { .fd = p->fd, .events = POLLIN, .revents = 0 }; + + pn->cb = cb; + pn->cb_arg = user; + + for (;;) { + if (p->break_loop) { + p->break_loop = 0; + return PCAP_ERROR_BREAK; + } + /* nm_dispatch won't run forever */ + + ret = nm_dispatch((void *)d, cnt, (void *)pcap_netmap_filter, (void *)p); + if (ret != 0) + break; + errno = 0; + ret = poll(&pfd, 1, p->the_timeout); + } + return ret; +} + + +/* XXX need to check the NIOCTXSYNC/poll */ +static int +pcap_netmap_inject(pcap_t *p, const void *buf, size_t size) +{ + struct nm_desc *d = NM_PRIV(p)->d; + + return nm_inject(d, buf, size); +} + + +static int +pcap_netmap_ioctl(pcap_t *p, u_long what, uint32_t *if_flags) +{ + struct pcap_netmap *pn = NM_PRIV(p); + struct nm_desc *d = pn->d; + struct ifreq ifr; + int error, fd = d->fd; + +#ifdef linux + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + fprintf(stderr, "Error: cannot get device control socket.\n"); + return -1; + } +#endif /* linux */ + bzero(&ifr, sizeof(ifr)); + strncpy(ifr.ifr_name, d->req.nr_name, sizeof(ifr.ifr_name)); + switch (what) { + case SIOCSIFFLAGS: + ifr.ifr_flags = *if_flags; +#ifdef __FreeBSD__ + ifr.ifr_flagshigh = *if_flags >> 16; +#endif /* __FreeBSD__ */ + break; + } + error = ioctl(fd, what, &ifr); + if (!error) { + switch (what) { + case SIOCGIFFLAGS: + *if_flags = ifr.ifr_flags; +#ifdef __FreeBSD__ + *if_flags |= (ifr.ifr_flagshigh << 16); +#endif /* __FreeBSD__ */ + } + } +#ifdef linux + close(fd); +#endif /* linux */ + return error ? -1 : 0; +} + + +static void +pcap_netmap_close(pcap_t *p) +{ + struct pcap_netmap *pn = NM_PRIV(p); + struct nm_desc *d = pn->d; + uint32_t if_flags = 0; + + if (pn->must_clear_promisc) { + pcap_netmap_ioctl(p, SIOCGIFFLAGS, &if_flags); /* fetch flags */ + if (if_flags & IFF_PPROMISC) { + if_flags &= ~IFF_PPROMISC; + pcap_netmap_ioctl(p, SIOCSIFFLAGS, &if_flags); + } + } + nm_close(d); +#ifdef HAVE_NO_PRIV + free(pn); + SET_PRIV(p, NULL); // unnecessary +#endif + pcap_cleanup_live_common(p); +} + + +static int +pcap_netmap_activate(pcap_t *p) +{ + struct pcap_netmap *pn = NM_PRIV(p); + struct nm_desc *d = nm_open(p->opt.source, NULL, 0, NULL); + uint32_t if_flags = 0; + + if (d == NULL) { + snprintf(p->errbuf, PCAP_ERRBUF_SIZE, + "netmap open: cannot access %s: %s\n", + p->opt.source, pcap_strerror(errno)); +#ifdef HAVE_NO_PRIV + free(pn); + SET_PRIV(p, NULL); // unnecessary +#endif + pcap_cleanup_live_common(p); + return (PCAP_ERROR); + } + if (0) + fprintf(stderr, "%s device %s priv %p fd %d ports %d..%d\n", + __FUNCTION__, p->opt.source, d, d->fd, + d->first_rx_ring, d->last_rx_ring); + pn->d = d; + p->fd = d->fd; + if (p->opt.promisc && !(d->req.nr_ringid & NETMAP_SW_RING)) { + pcap_netmap_ioctl(p, SIOCGIFFLAGS, &if_flags); /* fetch flags */ + if (!(if_flags & IFF_PPROMISC)) { + pn->must_clear_promisc = 1; + if_flags |= IFF_PPROMISC; + pcap_netmap_ioctl(p, SIOCSIFFLAGS, &if_flags); + } + } + p->linktype = DLT_EN10MB; + p->selectable_fd = p->fd; + p->read_op = pcap_netmap_dispatch; + p->inject_op = pcap_netmap_inject, + p->setfilter_op = install_bpf_program; + p->setdirection_op = NULL; + p->set_datalink_op = NULL; + p->getnonblock_op = pcap_getnonblock_fd; + p->setnonblock_op = pcap_setnonblock_fd; + p->stats_op = pcap_netmap_stats; + p->cleanup_op = pcap_netmap_close; + + return (0); +} + + +pcap_t * +pcap_netmap_create(const char *device, char *ebuf, int *is_ours) +{ + pcap_t *p; + + *is_ours = (!strncmp(device, "netmap:", 7) || !strncmp(device, "vale", 4)); + if (! *is_ours) + return NULL; +#ifdef HAVE_NO_PRIV + { + void *pn = calloc(1, sizeof(struct pcap_netmap)); + if (pn == NULL) + return NULL; + p = pcap_create_common(device, ebuf); + if (p == NULL) { + free(pn); + return NULL; + } + SET_PRIV(p, pn); + } +#else + p = pcap_create_common(device, ebuf, sizeof (struct pcap_netmap)); + if (p == NULL) + return (NULL); +#endif + p->activate_op = pcap_netmap_activate; + return (p); +} Property changes on: stable/10/lib/libpcap/pcap-netmap.c ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: stable/10 =================================================================== --- stable/10 (revision 277721) +++ stable/10 (revision 277722) Property changes on: stable/10 ___________________________________________________________________ Modified: svn:mergeinfo ## -0,0 +0,1 ## Merged /head:r272111,272659