X-Git-Url: http://git.samba.org/samba.git/?p=obnox%2Fwireshark%2Fwip.git;a=blobdiff_plain;f=util.c;h=36a579305e3c00d079edab4635d22494cdc51724;hp=0082f523d2808592545ada390e17565df5f4fd69;hb=629514fbb24114f095f2cf085eb3f0ef33763e3d;hpb=e7e11b390d132139b2ec4f65e31bfe055f72dcc3 diff --git a/util.c b/util.c index 0082f523d2..36a579305e 100644 --- a/util.c +++ b/util.c @@ -1,23 +1,22 @@ /* util.c * Utility routines * - * $Id: util.c,v 1.30 2000/01/26 04:56:14 guy Exp $ + * $Id$ * - * Ethereal - Network traffic analyzer - * By Gerald Combs + * Wireshark - Network traffic analyzer + * By Gerald Combs * Copyright 1998 Gerald Combs * - * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * + * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. @@ -38,540 +37,158 @@ #include #endif -#ifdef HAVE_SYS_TYPES_H -#include -#endif - -#ifdef HAVE_SYS_STAT_H -#include -#endif - -#ifdef NEED_SNPRINTF_H -# ifdef HAVE_STDARG_H -# include -# else -# include -# endif -# include "snprintf.h" -#endif - -#ifdef NEED_MKSTEMP -#include "mkstemp.h" -#endif +#include +#include #include "util.h" -#ifdef HAVE_IO_H -#include -typedef int mode_t; /* for win32 */ -#endif - -#ifdef HAVE_LIBPCAP - -#ifdef HAVE_SYS_SOCKET_H -#include -#endif - -#ifdef HAVE_SYS_IOCTL_H -#include -#endif - -#ifdef HAVE_NET_IF_H -#include -#endif - -#ifdef HAVE_SYS_SOCKIO_H -# include -#endif - -#include "globals.h" - -#endif - /* - * Given a pathname, return a pointer to the last pathname separator - * character in the pathname, or NULL if the pathname contains no - * separators. + * Collect command-line arguments as a string consisting of the arguments, + * separated by spaces. */ -static char * -find_last_pathname_separator(char *path) +char * +get_args_as_string(int argc, char **argv, int optind) { - char *separator; - -#ifdef WIN32 - char c; + int len; + int i; + char *argstring; /* - * We have to scan for '\' or '/'. - * Get to the end of the string. + * Find out how long the string will be. */ - separator = path + strlen(path); /* points to ending '\0' */ - while (separator > path) { - c = *--separator; - if (c == '\\' || c == '/') - return separator; /* found it */ - } - - /* - * OK, we didn't find any, so no directories - but there might - * be a drive letter.... - */ - return strchr(path, ':'); -#else - separator = strrchr(path, '/'); -#endif - return separator; -} - -/* - * Given a pathname, return the last component. - */ -char * -get_basename(char *path) -{ - char *filename; - - filename = find_last_pathname_separator(path); - if (filename == NULL) { - /* - * There're no directories, drive letters, etc. in the - * name; the pathname *is* the file name. - */ - filename = path; - } else { - /* - * Skip past the pathname or drive letter separator. - */ - filename++; - } - return filename; -} - -/* - * Given a pathname, return a string containing everything but the - * last component. NOTE: this overwrites the pathname handed into - * it.... - */ -char * -get_dirname(char *path) -{ - char *separator; - - separator = find_last_pathname_separator(path); - if (separator == NULL) { - /* - * There're no directories, drive letters, etc. in the - * name; there is no directory path to return. - */ - return NULL; + len = 0; + for (i = optind; i < argc; i++) { + len += strlen(argv[i]); + len++; /* space, or '\0' if this is the last argument */ } /* - * Get rid of the last pathname separator and the final file - * name following it. + * Allocate the buffer for the string. */ - *separator = '\0'; + argstring = g_malloc(len); /* - * "path" now contains the pathname of the directory containing - * the file/directory to which it referred. + * Now construct the string. */ - return path; + strcpy(argstring, ""); + i = optind; + for (;;) { + strcat(argstring, argv[i]); + i++; + if (i == argc) + break; + strcat(argstring, " "); + } + return argstring; } -static char * -setup_tmpdir(char *dir) -{ - int len = strlen(dir); - char *newdir; - - /* Append slash if necessary */ - if (dir[len - 1] == '/') { - newdir = dir; - } - else { - newdir = g_malloc(len + 2); - strcpy(newdir, dir); - strcat(newdir, "/"); - } - return newdir; -} - -static int -try_tempfile(char *namebuf, int namebuflen, const char *dir, const char *pfx) -{ - static const char suffix[] = "XXXXXXXXXX"; - int namelen = strlen(dir) + strlen(pfx) + sizeof suffix; - mode_t old_umask; - int tmp_fd; - - if (namebuflen < namelen) { - /* Stick in a truncated name, so that if this error is - reported with the file name, you at least get - something. */ - snprintf(namebuf, namebuflen, "%s%s%s", dir, pfx, suffix); - errno = ENAMETOOLONG; - return -1; - } - strcpy(namebuf, dir); - strcat(namebuf, pfx); - strcat(namebuf, suffix); - - /* The Single UNIX Specification doesn't say that "mkstemp()" - creates the temporary file with mode rw-------, so we - won't assume that all UNIXes will do so; instead, we set - the umask to 0077 to take away all group and other - permissions, attempt to create the file, and then put - the umask back. */ - old_umask = umask(0077); - tmp_fd = mkstemp(namebuf); - umask(old_umask); - return tmp_fd; -} - -static char *tmpdir = NULL; -#ifdef WIN32 -static char *temp = NULL; -#endif -static char *E_tmpdir; - -#ifndef P_tmpdir -#define P_tmpdir "/var/tmp" -#endif - -int -create_tempfile(char *namebuf, int namebuflen, const char *pfx) -{ - char *dir; - int fd; - static gboolean initialized; - - if (!initialized) { - if ((dir = getenv("TMPDIR")) != NULL) - tmpdir = setup_tmpdir(dir); -#ifdef WIN32 - if ((dir = getenv("TEMP")) != NULL) - temp = setup_tmpdir(dir); -#endif - - E_tmpdir = setup_tmpdir(P_tmpdir); - initialized = TRUE; - } - - if (tmpdir != NULL) { - fd = try_tempfile(namebuf, namebuflen, tmpdir, pfx); - if (fd != -1) - return fd; - } - -#ifdef WIN32 - if (temp != NULL) { - fd = try_tempfile(namebuf, namebuflen, temp, pfx); - if (fd != -1) - return fd; - } -#endif - - fd = try_tempfile(namebuf, namebuflen, E_tmpdir, pfx); - if (fd != -1) - return fd; - - return try_tempfile(namebuf, namebuflen, "/tmp", pfx); -} - -/* ASCII/EBCDIC conversion tables from - * http://www.room42.com/store/computer_center/code_tables.shtml - */ -static guint8 ASCII_translate_EBCDIC [ 256 ] = { - 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, - 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, - 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, - 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, - 0x40, 0x5A, 0x7F, 0x7B, 0x5B, 0x6C, 0x50, 0x7D, 0x4D, - 0x5D, 0x5C, 0x4E, 0x6B, 0x60, 0x4B, 0x61, - 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, - 0xF9, 0x7A, 0x5E, 0x4C, 0x7E, 0x6E, 0x6F, - 0x7C, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, - 0xC9, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, - 0xD7, 0xD8, 0xD9, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, - 0xE8, 0xE9, 0xAD, 0xE0, 0xBD, 0x5F, 0x6D, - 0x7D, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, - 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, - 0x97, 0x98, 0x99, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, - 0xA8, 0xA9, 0xC0, 0x6A, 0xD0, 0xA1, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, - 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B -}; - +/* Compute the difference between two seconds/microseconds time stamps. */ void -ASCII_to_EBCDIC(guint8 *buf, guint bytes) -{ - guint i; - guint8 *bufptr; - - bufptr = buf; - - for (i = 0; i < bytes; i++, bufptr++) { - *bufptr = ASCII_translate_EBCDIC[*bufptr]; - } -} - -guint8 -ASCII_to_EBCDIC1(guint8 c) +compute_timestamp_diff(gint *diffsec, gint *diffusec, + guint32 sec1, guint32 usec1, guint32 sec2, guint32 usec2) { - return ASCII_translate_EBCDIC[c]; + if (sec1 == sec2) { + /* The seconds part of the first time is the same as the seconds + part of the second time, so if the microseconds part of the first + time is less than the microseconds part of the second time, the + first time is before the second time. The microseconds part of + the delta should just be the difference between the microseconds + part of the first time and the microseconds part of the second + time; don't adjust the seconds part of the delta, as it's OK if + the microseconds part is negative. */ + + *diffsec = sec1 - sec2; + *diffusec = usec1 - usec2; + } else if (sec1 <= sec2) { + /* The seconds part of the first time is less than the seconds part + of the second time, so the first time is before the second time. + + Both the "seconds" and "microseconds" value of the delta + should have the same sign, so if the difference between the + microseconds values would be *positive*, subtract 1,000,000 + from it, and add one to the seconds value. */ + *diffsec = sec1 - sec2; + if (usec2 >= usec1) { + *diffusec = usec1 - usec2; + } else { + *diffusec = (usec1 - 1000000) - usec2; + (*diffsec)++; + } + } else { + /* Oh, good, we're not caught in a chronosynclastic infindibulum. */ + *diffsec = sec1 - sec2; + if (usec2 <= usec1) { + *diffusec = usec1 - usec2; + } else { + *diffusec = (usec1 + 1000000) - usec2; + (*diffsec)--; + } + } } -static guint8 EBCDIC_translate_ASCII [ 256 ] = { - 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, - 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, - 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, - 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, - 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, - 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, - 0x2E, 0x2E, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, - 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x2E, 0x3F, - 0x20, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x2E, 0x2E, 0x2E, 0x3C, 0x28, 0x2B, 0x7C, - 0x26, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x2E, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0x5E, - 0x2D, 0x2F, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x2E, 0x7C, 0x2C, 0x25, 0x5F, 0x3E, 0x3F, - 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x2E, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22, - 0x2E, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, - 0x69, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x2E, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, - 0x72, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x2E, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, - 0x7A, 0x2E, 0x2E, 0x2E, 0x5B, 0x2E, 0x2E, - 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x2E, 0x2E, 0x2E, 0x2E, 0x5D, 0x2E, 0x2E, - 0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, - 0x49, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, - 0x52, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x5C, 0x2E, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, - 0x5A, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, - 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, - 0x39, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E -}; +/* Try to figure out if we're remotely connected, e.g. via ssh or + Terminal Server, and create a capture filter that matches aspects of the + connection. We match the following environment variables: -void -EBCDIC_to_ASCII(guint8 *buf, guint bytes) -{ - guint i; - guint8 *bufptr; - - bufptr = buf; - - for (i = 0; i < bytes; i++, bufptr++) { - *bufptr = EBCDIC_translate_ASCII[*bufptr]; - } -} - -guint8 -EBCDIC_to_ASCII1(guint8 c) -{ - return EBCDIC_translate_ASCII[c]; -} - -#ifdef HAVE_LIBPCAP - -/* - * If the ability to capture packets is added to Wiretap, these - * routines should be moved to the Wiretap source (with - * "get_interface_list()" and "free_interface_list()" renamed to - * "wtap_get_interface_list()" and "wtap_free_interface_list()", - * and modified to use Wiretap routines to attempt to open the - * interface. + SSH_CONNECTION (ssh): + SSH_CLIENT (ssh): + REMOTEHOST (tcsh, others?): + DISPLAY (x11): [remote name]: + SESSIONNAME (terminal server): */ -struct search_user_data { - char *name; - int found; -}; - -static void -search_for_if_cb(gpointer data, gpointer user_data); - -static void -free_if_cb(gpointer data, gpointer user_data); - -GList * -get_interface_list(int *err, char *err_str) -{ - GList *il = NULL; - gint nonloopback_pos = 0; - struct ifreq *ifr, *last; - struct ifconf ifc; - struct ifreq ifrflags; - int sock = socket(AF_INET, SOCK_DGRAM, 0); - struct search_user_data user_data; - pcap_t *pch; +const gchar *get_conn_cfilter(void) { + static GString *filter_str = NULL; + gchar *env, **tokens; - if (sock < 0) { - sprintf(err_str, "Error opening socket: %s", - strerror(errno)); - return NULL; + if (filter_str == NULL) { + filter_str = g_string_new(""); } - - /* - * Since we have to grab the interface list all at once, we'll - * make plenty of room. - */ - ifc.ifc_len = 1024 * sizeof(struct ifreq); - ifc.ifc_buf = malloc(ifc.ifc_len); - - if (ioctl(sock, SIOCGIFCONF, &ifc) < 0 || - ifc.ifc_len < sizeof(struct ifreq)) { - sprintf(err_str, "SIOCGIFCONF error getting list of interfaces: %s", - strerror(errno)); - goto fail; - } - - ifr = (struct ifreq *) ifc.ifc_req; - last = (struct ifreq *) ((char *) ifr + ifc.ifc_len); - while (ifr < last) { - /* - * Skip addresses that begin with "dummy", or that include - * a ":" (the latter are Solaris virtuals). - */ - if (strncmp(ifr->ifr_name, "dummy", 5) == 0 || - strchr(ifr->ifr_name, ':') != NULL) - goto next; - - /* - * If we already have this interface name on the list, - * don't add it (SIOCGIFCONF returns, at least on - * BSD-flavored systems, one entry per interface *address*; - * if an interface has multiple addresses, we get multiple - * entries for it). - */ - user_data.name = ifr->ifr_name; - user_data.found = FALSE; - g_list_foreach(il, search_for_if_cb, &user_data); - if (user_data.found) - goto next; - - /* - * Get the interface flags. - */ - memset(&ifrflags, 0, sizeof ifrflags); - strncpy(ifrflags.ifr_name, ifr->ifr_name, - sizeof ifrflags.ifr_name); - if (ioctl(sock, SIOCGIFFLAGS, (char *)&ifrflags) < 0) { - if (errno == ENXIO) - goto next; - sprintf(err_str, "SIOCGIFFLAGS error getting flags for interface %s: %s", - ifr->ifr_name, strerror(errno)); - goto fail; + if ((env = getenv("SSH_CONNECTION")) != NULL) { + tokens = g_strsplit(env, " ", 4); + if (tokens[3]) { + g_string_sprintf(filter_str, "not (tcp port %s and %s host %s " + "and tcp port %s and %s host %s)", tokens[1], host_ip_af(tokens[0]), tokens[0], + tokens[3], host_ip_af(tokens[2]), tokens[2]); + return filter_str->str; } - - /* - * Skip interfaces that aren't up. - */ - if (!(ifrflags.ifr_flags & IFF_UP)) - goto next; - - /* - * Skip interfaces that we can't open with "libpcap". - * Open with the minimum packet size - it appears that the - * IRIX SIOCSNOOPLEN "ioctl" may fail if the capture length - * supplied is too large, rather than just truncating it. - */ - pch = pcap_open_live(ifr->ifr_name, MIN_PACKET_SIZE, 0, 0, - err_str); - if (pch == NULL) - goto next; - pcap_close(pch); - - /* - * If it's a loopback interface, add it at the end of the - * list, otherwise add it after the last non-loopback - * interface, so all loopback interfaces go at the end - we - * don't want a loopback interface to be the default capture - * device unless there are no non-loopback devices. - */ - if ((ifrflags.ifr_flags & IFF_LOOPBACK) || - strncmp(ifr->ifr_name, "lo", 2) == 0) - il = g_list_insert(il, g_strdup(ifr->ifr_name), -1); - else { - il = g_list_insert(il, g_strdup(ifr->ifr_name), - nonloopback_pos); - /* - * Insert the next non-loopback interface after this - * one. - */ - nonloopback_pos++; + } else if ((env = getenv("SSH_CLIENT")) != NULL) { + tokens = g_strsplit(env, " ", 3); + g_string_sprintf(filter_str, "not (tcp port %s and %s host %s " + "and tcp port %s)", tokens[1], host_ip_af(tokens[0]), tokens[0], tokens[2]); + return filter_str->str; + } else if ((env = getenv("REMOTEHOST")) != NULL) { + if (strcasecmp(env, "localhost") == 0 || strcmp(env, "127.0.0.1") == 0) { + return ""; + } + g_string_sprintf(filter_str, "not %s host %s", host_ip_af(env), env); + return filter_str->str; + } else if ((env = getenv("DISPLAY")) != NULL) { + tokens = g_strsplit(env, ":", 2); + if (tokens[0] && tokens[0][0] != 0) { + if (strcasecmp(tokens[0], "localhost") == 0 || + strcmp(tokens[0], "127.0.0.1") == 0) { + return ""; + } + g_string_sprintf(filter_str, "not %s host %s", + host_ip_af(tokens[0]), tokens[0]); + return filter_str->str; + } + } else if ((env = getenv("SESSIONNAME")) != NULL) { + /* Apparently the KB article at + * http://technet2.microsoft.com/WindowsServer/en/library/6caf87bf-3d70-4801-9485-87e9ec3df0171033.mspx?mfr=true + * is incorrect. There are _plenty_ of cases where CLIENTNAME + * and SESSIONNAME are set outside of a Terminal Terver session. + * It looks like Terminal Server sets SESSIONNAME to RDP-TCP# + * for "real" sessions. + * + * XXX - There's a better way to do this described at + * http://www.microsoft.com/technet/archive/termsrv/maintain/featusability/tsrvapi.mspx?mfr=true + */ + if (g_strncasecmp(env, "rdp", 3) == 0) { + g_string_sprintf(filter_str, "not tcp port 3389"); + return filter_str->str; } - - next: -#ifdef HAVE_SA_LEN - ifr = (struct ifreq *) ((char *) ifr + ifr->ifr_addr.sa_len + IFNAMSIZ); -#else - ifr = (struct ifreq *) ((char *) ifr + sizeof(struct ifreq)); -#endif - } - - free(ifc.ifc_buf); - close(sock); - - if (il == NULL) { - /* - * No interfaces found. - */ - *err = NO_INTERFACES_FOUND; - } - return il; - -fail: - if (il != NULL) { - g_list_foreach(il, free_if_cb, NULL); - g_list_free(il); - } - free(ifc.ifc_buf); - close(sock); - *err = CANT_GET_INTERFACE_LIST; - return NULL; -} - -static void -search_for_if_cb(gpointer data, gpointer user_data) -{ - struct search_user_data *search_user_data = user_data; - - if (strcmp((char *)data, search_user_data->name) == 0) - search_user_data->found = TRUE; -} - -static void -free_if_cb(gpointer data, gpointer user_data) -{ - g_free(data); -} - -void -free_interface_list(GList *if_list) -{ - while (if_list != NULL) { - g_free(if_list->data); - if_list = g_list_remove_link(if_list, if_list); } + return ""; } - -#endif /* HAVE_LIBPCAP */