/* util.c
* Utility routines
*
- * $Id: util.c,v 1.20 1999/09/23 05:20:18 guy Exp $
+ * $Id: util.c,v 1.48 2000/12/23 19:50:36 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
#include <glib.h>
-#include <gtk/gtk.h>
-
-#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#endif
#ifdef NEED_SNPRINTF_H
-# ifdef HAVE_STDARG_H
-# include <stdarg.h>
-# else
-# include <varargs.h>
-# endif
# include "snprintf.h"
#endif
+#ifndef WIN32
+#include <pwd.h>
+#endif
+
+#ifdef NEED_MKSTEMP
+#include "mkstemp.h"
+#endif
+
#include "util.h"
-#include "image/icon-excl.xpm"
-#include "image/icon-ethereal.xpm"
+#ifdef HAVE_IO_H
+#include <io.h>
+typedef int mode_t; /* for win32 */
+#endif
-static void simple_dialog_cancel_cb(GtkWidget *, gpointer);
+#ifdef HAVE_LIBPCAP
-const gchar *bm_key = "button mask";
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
-/* Simple dialog function - Displays a dialog box with the supplied message
- * text.
- *
- * Args:
- * type : One of ESD_TYPE_*.
- * btn_mask : The address of a gint. The value passed in determines if
- * the 'Cancel' button is displayed. The button pressed by the
- * user is passed back.
- * msg_format : Sprintf-style format of the text displayed in the dialog.
- * ... : Argument list for msg_format
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#ifndef WIN32
+#include <net/if.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKIO_H
+# include <sys/sockio.h>
+#endif
+
+#include "globals.h"
+
+#endif
+
+/*
+ * Given a pathname, return:
+ *
+ * the errno, if an attempt to "stat()" the file fails;
+ *
+ * EISDIR, if the attempt succeeded and the file turned out
+ * to be a directory;
*
+ * 0, if the attempt succeeded and the file turned out not
+ * to be a directory.
*/
-
-#define ESD_MAX_MSG_LEN 2048
-void
-simple_dialog(gint type, gint *btn_mask, gchar *msg_format, ...) {
- GtkWidget *win, *main_vb, *top_hb, *type_pm, *msg_label,
- *bbox, *ok_btn, *cancel_btn;
- GdkPixmap *pixmap;
- GdkBitmap *mask;
- GtkStyle *style;
- GdkColormap *cmap;
- va_list ap;
- gchar message[ESD_MAX_MSG_LEN];
- gchar **icon;
-
- /* Main window */
- win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
- gtk_container_border_width(GTK_CONTAINER(win), 7);
-
- switch (type) {
- case ESD_TYPE_WARN :
- gtk_window_set_title(GTK_WINDOW(win), "Ethereal: Warning");
- icon = icon_excl_xpm;
- break;
- case ESD_TYPE_CRIT :
- gtk_window_set_title(GTK_WINDOW(win), "Ethereal: Critical");
- icon = icon_excl_xpm;
- break;
- case ESD_TYPE_INFO :
- default :
- icon = icon_ethereal_xpm;
- gtk_window_set_title(GTK_WINDOW(win), "Ethereal: Information");
- break;
- }
- gtk_object_set_data(GTK_OBJECT(win), bm_key, btn_mask);
+/*
+ * Visual C++ on Win32 systems doesn't define these. (Old UNIX systems don't
+ * define them either.)
+ *
+ * Visual C++ on Win32 systems doesn't define S_IFIFO, it defines _S_IFIFO.
+ */
+#ifndef S_ISREG
+#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
+#endif
+#ifndef S_IFIFO
+#define S_IFIFO _S_IFIFO
+#endif
+#ifndef S_ISFIFO
+#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
+#endif
+#ifndef S_ISDIR
+#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
+#endif
- /* Container for our rows */
- main_vb = gtk_vbox_new(FALSE, 5);
- gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
- gtk_container_add(GTK_CONTAINER(win), main_vb);
- gtk_widget_show(main_vb);
+int
+test_for_directory(const char *path)
+{
+ struct stat statb;
- /* Top row: Icon and message text */
- top_hb = gtk_hbox_new(FALSE, 10);
- gtk_container_add(GTK_CONTAINER(main_vb), top_hb);
- gtk_widget_show(top_hb);
-
- style = gtk_widget_get_style(win);
- cmap = gdk_colormap_get_system();
- pixmap = gdk_pixmap_colormap_create_from_xpm_d(NULL, cmap, &mask,
- &style->bg[GTK_STATE_NORMAL], icon);
- type_pm = gtk_pixmap_new(pixmap, mask);
- gtk_misc_set_alignment (GTK_MISC (type_pm), 0.5, 0.0);
- gtk_container_add(GTK_CONTAINER(top_hb), type_pm);
- gtk_widget_show(type_pm);
-
- /* Load our vararg list into the message string */
- va_start(ap, msg_format);
- vsnprintf(message, ESD_MAX_MSG_LEN, msg_format, ap);
-
- msg_label = gtk_label_new(message);
- gtk_label_set_justify(GTK_LABEL(msg_label), GTK_JUSTIFY_FILL);
- gtk_container_add(GTK_CONTAINER(top_hb), msg_label);
- gtk_widget_show(msg_label);
-
- /* Button row */
- bbox = gtk_hbutton_box_new();
- gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_END);
- gtk_container_add(GTK_CONTAINER(main_vb), bbox);
- gtk_widget_show(bbox);
-
- ok_btn = gtk_button_new_with_label ("OK");
- gtk_signal_connect_object(GTK_OBJECT(ok_btn), "clicked",
- GTK_SIGNAL_FUNC(gtk_widget_destroy), GTK_OBJECT (win));
- gtk_container_add(GTK_CONTAINER(bbox), ok_btn);
- GTK_WIDGET_SET_FLAGS(ok_btn, GTK_CAN_DEFAULT);
- gtk_widget_grab_default(ok_btn);
- gtk_widget_show(ok_btn);
-
- if (btn_mask && *btn_mask == ESD_BTN_CANCEL) {
- cancel_btn = gtk_button_new_with_label("Cancel");
- gtk_signal_connect(GTK_OBJECT(cancel_btn), "clicked",
- GTK_SIGNAL_FUNC(simple_dialog_cancel_cb), (gpointer) win);
- gtk_container_add(GTK_CONTAINER(bbox), cancel_btn);
- GTK_WIDGET_SET_FLAGS(cancel_btn, GTK_CAN_DEFAULT);
- gtk_widget_show(cancel_btn);
- }
+ if (stat(path, &statb) < 0)
+ return errno;
+
+ if (S_ISDIR(statb.st_mode))
+ return EISDIR;
+ else
+ return 0;
+}
- if (btn_mask)
- *btn_mask = ESD_BTN_OK;
+/*
+ * Given a pathname, return a pointer to the last pathname separator
+ * character in the pathname, or NULL if the pathname contains no
+ * separators.
+ */
+char *
+find_last_pathname_separator(char *path)
+{
+ char *separator;
- gtk_widget_show(win);
+#ifdef WIN32
+ char c;
+
+ /*
+ * We have to scan for '\' or '/'.
+ * Get to the end of the string.
+ */
+ 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;
}
-static void
-simple_dialog_cancel_cb(GtkWidget *w, gpointer win) {
- gint *btn_mask = (gint *) gtk_object_get_data(win, bm_key);
-
- if (btn_mask)
- *btn_mask = ESD_BTN_CANCEL;
- gtk_widget_destroy(GTK_WIDGET(win));
+/*
+ * 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;
+ }
+
+ /*
+ * Get rid of the last pathname separator and the final file
+ * name following it.
+ */
+ *separator = '\0';
+
+ /*
+ * "path" now contains the pathname of the directory containing
+ * the file/directory to which it referred.
+ */
+ return path;
+}
+
+/*
+ * Collect command-line arguments as a string consisting of the arguments,
+ * separated by spaces.
+ */
+char *
+get_args_as_string(int argc, char **argv, int optind)
+{
+ int len;
+ int i;
+ char *argstring;
+
+ /*
+ * Find out how long the string will be.
+ */
+ len = 0;
+ for (i = optind; i < argc; i++) {
+ len += strlen(argv[i]);
+ len++; /* space, or '\0' if this is the last argument */
+ }
+
+ /*
+ * Allocate the buffer for the string.
+ */
+ argstring = g_malloc(len);
+
+ /*
+ * Now construct the string.
+ */
+ strcpy(argstring, "");
+ i = optind;
+ for (;;) {
+ strcat(argstring, argv[i]);
+ i++;
+ if (i == argc)
+ break;
+ strcat(argstring, " ");
+ }
+ return argstring;
}
static char *
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;
}
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
+};
+
+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)
+{
+ return ASCII_translate_EBCDIC[c];
+}
+
+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
+};
+
+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.
+ */
+
+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);
+
+#ifndef WIN32
+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;
+ int len, lastlen;
+ char *buf;
+
+ if (sock < 0) {
+ sprintf(err_str, "Error opening socket: %s",
+ strerror(errno));
+ return NULL;
+ }
+
+ /*
+ * This code came from: W. Richard Stevens: "UNIX Network Programming",
+ * Networking APIs: Sockets and XTI, Vol 1, page 434.
+ */
+ lastlen = 0;
+ len = 100 * sizeof(struct ifreq);
+ for ( ; ; ) {
+ buf = g_malloc(len);
+ ifc.ifc_len = len;
+ ifc.ifc_buf = buf;
+ memset (buf, 0, len);
+ if (ioctl(sock, SIOCGIFCONF, &ifc) < 0) {
+ if (errno != EINVAL || lastlen != 0) {
+ sprintf(err_str,
+ "SIOCGIFCONF ioctl error getting list of interfaces: %s",
+ strerror(errno));
+ goto fail;
+ }
+ } else {
+ if (ifc.ifc_len < sizeof(struct ifreq)) {
+ sprintf(err_str,
+ "SIOCGIFCONF ioctl gave too small return buffer");
+ goto fail;
+ }
+ if (ifc.ifc_len == lastlen)
+ break; /* success, len has not changed */
+ lastlen = ifc.ifc_len;
+ }
+ len += 10 * sizeof(struct ifreq); /* increment */
+ g_free(buf);
+ }
+ 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;
+ }
+
+ /*
+ * 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++;
+ }
+
+ 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
+ }
+
+#ifdef linux
+ /*
+ * OK, maybe we have support for the "any" device, to do a cooked
+ * capture on all interfaces at once.
+ * Try opening it and, if that succeeds, add it to the end of
+ * the list of interfaces.
+ */
+ pch = pcap_open_live("any", MIN_PACKET_SIZE, 0, 0, err_str);
+ if (pch != NULL) {
+ /*
+ * It worked; we can use the "any" device.
+ */
+ il = g_list_insert(il, g_strdup("any"), -1);
+ pcap_close(pch);
+ }
+#endif
+
+ g_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);
+ }
+ g_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;
+}
+#else
+GList *
+get_interface_list(int *err, char *err_str) {
+ GList *il = NULL;
+ wchar_t *names;
+ char *win95names;
+ char newname[255];
+ int i, j, done;
+
+ names = (wchar_t *)pcap_lookupdev(err_str);
+ i = done = 0;
+
+ if (names) {
+ if (names[0]<256) {
+ /* If names[0] is less than 256 it means the first byte is 0
+ This implies that we are using unicode characters */
+ do
+ {
+ j = 0;
+ while (names[i] != 0)
+ newname[j++] = names[i++];
+ i++;
+ if (names[i] == 0)
+ done = 1;
+ newname[j++] = 0;
+ il = g_list_append(il, g_strdup(newname));
+ } while (!done);
+ }
+ else {
+ /* Otherwise we are in Windows 95/98 and using ascii(8 bit)
+ characters */
+ do
+ {
+ win95names=names;
+ j = 0;
+ while (win95names[i] != 0)
+ newname[j++] = win95names[i++];
+ i++;
+ if (win95names[i] == 0)
+ done = 1;
+ newname[j++] = 0;
+ il = g_list_append(il, g_strdup(newname));
+ } while (!done);
+ }
+ }
+ return(il);
+}
+#endif
+
+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);
+ }
+}
+
+#endif /* HAVE_LIBPCAP */
+
+
+/* Compute the difference between two seconds/microseconds time stamps. */
+void
+compute_timestamp_diff(gint *diffsec, gint *diffusec,
+ guint32 sec1, guint32 usec1, guint32 sec2, guint32 usec2)
+{
+ 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)--;
+ }
+ }
+}
git.samba.org / obnox / wireshark / wip.git / blobdiff