* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
- * SPDX-License-Identifier: GPL-2.0+
+ * SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config.h>
#include "capture_opts.h"
#include "ringbuffer.h"
-#include <wsutil/clopts_common.h>
-#include <wsutil/cmdarg_err.h>
+#include <ui/clopts_common.h>
+#include <ui/cmdarg_err.h>
#include <wsutil/file_util.h>
+#include <wsutil/ws_pipe.h>
#include "caputils/capture_ifinfo.h"
#include "caputils/capture-pcap-util.h"
capture_opts->default_options.linktype = -1; /* use interface default */
capture_opts->default_options.promisc_mode = TRUE;
capture_opts->default_options.if_type = IF_WIRED;
-#ifdef HAVE_EXTCAP
capture_opts->default_options.extcap = NULL;
capture_opts->default_options.extcap_fifo = NULL;
capture_opts->default_options.extcap_args = NULL;
- capture_opts->default_options.extcap_userdata = NULL;
- capture_opts->default_options.extcap_pid = INVALID_EXTCAP_PID;
+ capture_opts->default_options.extcap_pipedata = NULL;
+ capture_opts->default_options.extcap_pid = WS_INVALID_PID;
#ifdef _WIN32
capture_opts->default_options.extcap_pipe_h = INVALID_HANDLE_VALUE;
capture_opts->default_options.extcap_control_in_h = INVALID_HANDLE_VALUE;
#endif
capture_opts->default_options.extcap_control_in = NULL;
capture_opts->default_options.extcap_control_out = NULL;
-#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
capture_opts->default_options.buffer_size = DEFAULT_CAPTURE_BUFFER_SIZE;
#endif
capture_opts->save_file = NULL;
capture_opts->group_read_access = FALSE;
#ifdef PCAP_NG_DEFAULT
- capture_opts->use_pcapng = TRUE; /* Save as pcap-ng by default */
+ capture_opts->use_pcapng = TRUE; /* Save as pcapng by default */
#else
capture_opts->use_pcapng = FALSE; /* Save as pcap by default */
#endif
capture_opts->multi_files_on = FALSE;
capture_opts->has_file_duration = FALSE;
- capture_opts->file_duration = 60; /* 1 min */
+ capture_opts->file_duration = 60.0; /* 1 min */
capture_opts->has_file_interval = FALSE;
capture_opts->file_interval = 60; /* 1 min */
+ capture_opts->has_file_packets = FALSE;
+ capture_opts->file_packets = 0;
capture_opts->has_ring_num_files = FALSE;
capture_opts->ring_num_files = RINGBUFFER_MIN_NUM_FILES;
capture_opts->has_autostop_filesize = FALSE;
capture_opts->autostop_filesize = 1000; /* 1 MB */
capture_opts->has_autostop_duration = FALSE;
- capture_opts->autostop_duration = 60; /* 1 min */
+ capture_opts->autostop_duration = 60.0; /* 1 min */
capture_opts->capture_comment = NULL;
capture_opts->output_to_pipe = FALSE;
g_array_free(capture_opts->all_ifaces, TRUE);
capture_opts->all_ifaces = NULL;
}
+ g_free(capture_opts->save_file);
}
/* log content of capture_opts */
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
g_log(log_domain, log_level, "Interface name[%02d] : %s", i, interface_opts->name ? interface_opts->name : "(unspecified)");
g_log(log_domain, log_level, "Interface description[%02d] : %s", i, interface_opts->descr ? interface_opts->descr : "(unspecified)");
- g_log(log_domain, log_level, "Console display name[%02d]: %s", i, interface_opts->console_display_name ? interface_opts->console_display_name : "(unspecified)");
+ g_log(log_domain, log_level, "Display name[%02d]: %s", i, interface_opts->display_name ? interface_opts->display_name : "(unspecified)");
g_log(log_domain, log_level, "Capture filter[%02d] : %s", i, interface_opts->cfilter ? interface_opts->cfilter : "(unspecified)");
g_log(log_domain, log_level, "Snap length[%02d] (%u) : %d", i, interface_opts->has_snaplen, interface_opts->snaplen);
g_log(log_domain, log_level, "Link Type[%02d] : %d", i, interface_opts->linktype);
g_log(log_domain, log_level, "Promiscuous Mode[%02d]: %s", i, interface_opts->promisc_mode?"TRUE":"FALSE");
-#ifdef HAVE_EXTCAP
g_log(log_domain, log_level, "Extcap[%02d] : %s", i, interface_opts->extcap ? interface_opts->extcap : "(unspecified)");
g_log(log_domain, log_level, "Extcap FIFO[%02d] : %s", i, interface_opts->extcap_fifo ? interface_opts->extcap_fifo : "(unspecified)");
g_log(log_domain, log_level, "Extcap PID[%02d] : %d", i, interface_opts->extcap_pid);
-#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
g_log(log_domain, log_level, "Buffer size[%02d] : %d (MB)", i, interface_opts->buffer_size);
#endif
g_log(log_domain, log_level, "Snap length[df] (%u) : %d", capture_opts->default_options.has_snaplen, capture_opts->default_options.snaplen);
g_log(log_domain, log_level, "Link Type[df] : %d", capture_opts->default_options.linktype);
g_log(log_domain, log_level, "Promiscuous Mode[df]: %s", capture_opts->default_options.promisc_mode?"TRUE":"FALSE");
-#ifdef HAVE_EXTCAP
g_log(log_domain, log_level, "Extcap[df] : %s", capture_opts->default_options.extcap ? capture_opts->default_options.extcap : "(unspecified)");
g_log(log_domain, log_level, "Extcap FIFO[df] : %s", capture_opts->default_options.extcap_fifo ? capture_opts->default_options.extcap_fifo : "(unspecified)");
-#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
g_log(log_domain, log_level, "Buffer size[df] : %d (MB)", capture_opts->default_options.buffer_size);
#endif
g_log(log_domain, log_level, "ShowInfo : %u", capture_opts->show_info);
g_log(log_domain, log_level, "MultiFilesOn : %u", capture_opts->multi_files_on);
- g_log(log_domain, log_level, "FileDuration (%u) : %u", capture_opts->has_file_duration, capture_opts->file_duration);
+ g_log(log_domain, log_level, "FileDuration (%u) : %.3f", capture_opts->has_file_duration, capture_opts->file_duration);
g_log(log_domain, log_level, "FileInterval (%u) : %u", capture_opts->has_file_interval, capture_opts->file_interval);
+ g_log(log_domain, log_level, "FilePackets (%u) : %u", capture_opts->has_file_packets, capture_opts->file_packets);
g_log(log_domain, log_level, "RingNumFiles (%u) : %u", capture_opts->has_ring_num_files, capture_opts->ring_num_files);
g_log(log_domain, log_level, "AutostopFiles (%u) : %u", capture_opts->has_autostop_files, capture_opts->autostop_files);
g_log(log_domain, log_level, "AutostopPackets (%u) : %u", capture_opts->has_autostop_packets, capture_opts->autostop_packets);
g_log(log_domain, log_level, "AutostopFilesize(%u) : %u (KB)", capture_opts->has_autostop_filesize, capture_opts->autostop_filesize);
- g_log(log_domain, log_level, "AutostopDuration(%u) : %u", capture_opts->has_autostop_duration, capture_opts->autostop_duration);
+ g_log(log_domain, log_level, "AutostopDuration(%u) : %.3f", capture_opts->has_autostop_duration, capture_opts->autostop_duration);
}
/*
}
if (strcmp(autostoparg,"duration") == 0) {
capture_opts->has_autostop_duration = TRUE;
- capture_opts->autostop_duration = get_positive_int(p,"autostop duration");
+ capture_opts->autostop_duration = get_positive_double(p,"autostop duration");
} else if (strcmp(autostoparg,"filesize") == 0) {
capture_opts->has_autostop_filesize = TRUE;
capture_opts->autostop_filesize = get_nonzero_guint32(p,"autostop filesize");
capture_opts->multi_files_on = TRUE;
capture_opts->has_autostop_files = TRUE;
capture_opts->autostop_files = get_positive_int(p,"autostop files");
+ } else if (strcmp(autostoparg,"packets") == 0) {
+ capture_opts->has_autostop_packets = TRUE;
+ capture_opts->autostop_packets = get_positive_int(p,"packet count");
} else {
return FALSE;
}
capture_opts->autostop_filesize = get_nonzero_guint32(p, "ring buffer filesize");
} else if (strcmp(arg,"duration") == 0) {
capture_opts->has_file_duration = TRUE;
- capture_opts->file_duration = get_positive_int(p, "ring buffer duration");
+ capture_opts->file_duration = get_positive_double(p, "ring buffer duration");
} else if (strcmp(arg,"interval") == 0) {
capture_opts->has_file_interval = TRUE;
capture_opts->file_interval = get_positive_int(p, "ring buffer interval");
+ } else if (strcmp(arg,"packets") == 0) {
+ capture_opts->has_file_packets = TRUE;
+ capture_opts->file_packets = get_positive_int(p, "ring buffer packet count");
}
*colonp = ':'; /* put the colon back */
}
#endif
+#ifdef _WIN32
+static char *
+capture_opts_generate_display_name(const char *friendly_name,
+ const char *name _U_)
+{
+ /*
+ * Display the friendly name rather than the not-so-friendly
+ * GUID-based interface name.
+ */
+ return g_strdup(friendly_name);
+}
+#else
+static char *
+capture_opts_generate_display_name(const char *friendly_name,
+ const char *name)
+{
+ /*
+ * On UN*X, however, users are more used to interface names,
+ * and may find it helpful to see them.
+ */
+ return g_strdup_printf("%s: %s", friendly_name, name);
+}
+#endif
+
+static void
+fill_in_interface_opts_from_ifinfo(interface_options *interface_opts,
+ const if_info_t *if_info)
+{
+ interface_opts->name = g_strdup(if_info->name);
+
+ if (if_info->friendly_name != NULL) {
+ /*
+ * We have a friendly name; remember it as the
+ * description...
+ */
+ interface_opts->descr = g_strdup(if_info->friendly_name);
+ /*
+ * ...and use it in the console display name.
+ */
+ interface_opts->display_name = capture_opts_generate_display_name(if_info->friendly_name, if_info->name);
+ } else {
+ /* fallback to the interface name */
+ interface_opts->descr = NULL;
+ interface_opts->display_name = g_strdup(if_info->name);
+ }
+ interface_opts->if_type = if_info->type;
+ interface_opts->extcap = g_strdup(if_info->extcap);
+}
+
+static gboolean
+fill_in_interface_opts_from_ifinfo_by_name(interface_options *interface_opts,
+ const char *name)
+{
+ gboolean matched;
+ GList *if_list;
+ int err;
+ GList *if_entry;
+ if_info_t *if_info;
+ size_t prefix_length;
+
+ matched = FALSE;
+ if_list = capture_interface_list(&err, NULL, NULL);
+ if (if_list != NULL) {
+ /*
+ * Try and do an exact match (case insensitive) on the
+ * interface name, the interface description, and the
+ * hardware description.
+ */
+ for (if_entry = g_list_first(if_list); if_entry != NULL;
+ if_entry = g_list_next(if_entry))
+ {
+ if_info = (if_info_t *)if_entry->data;
+
+ /*
+ * Does the specified name match the interface name
+ * with a case-insensitive match?
+ */
+ if (g_ascii_strcasecmp(if_info->name, name) == 0) {
+ /*
+ * Yes.
+ */
+ matched = TRUE;
+ break;
+ }
+
+ /*
+ * Does this interface have a friendly name and, if so,
+ * does the specified name match the friendly name with
+ * a case-insensitive match?
+ */
+ if (if_info->friendly_name != NULL &&
+ g_ascii_strcasecmp(if_info->friendly_name, name) == 0) {
+ /*
+ * Yes.
+ */
+ matched = TRUE;
+ break;
+ }
+ }
+
+ if (!matched) {
+ /*
+ * We didn't find it; attempt a case-insensitive prefix match
+ * of the friendly name.
+ */
+ prefix_length = strlen(name);
+ for (if_entry = g_list_first(if_list); if_entry != NULL;
+ if_entry = g_list_next(if_entry))
+ {
+ if_info = (if_info_t *)if_entry->data;
+
+ if (if_info->friendly_name != NULL &&
+ g_ascii_strncasecmp(if_info->friendly_name, name, prefix_length) == 0) {
+ /*
+ * We found an interface whose friendly name matches
+ * with a case-insensitive prefix match.
+ */
+ matched = TRUE;
+ break;
+ }
+ }
+ }
+ }
+
+ if (matched) {
+ /*
+ * We found an interface that matches.
+ */
+ fill_in_interface_opts_from_ifinfo(interface_opts, if_info);
+ }
+ free_interface_list(if_list);
+ return matched;
+}
+
static int
capture_opts_add_iface_opt(capture_options *capture_opts, const char *optarg_str_p)
{
cmdarg_err("There is no interface with that adapter index");
return 1;
}
- interface_opts.name = g_strdup(if_info->name);
- if (if_info->friendly_name != NULL) {
- /*
- * We have a friendly name for the interface, so display that
- * instead of the interface name/guid.
- *
- * XXX - on UN*X, the interface name is not quite so ugly,
- * and might be more familiar to users; display them both?
- */
- interface_opts.console_display_name = g_strdup(if_info->friendly_name);
- } else {
- /* fallback to the interface name */
- interface_opts.console_display_name = g_strdup(if_info->name);
- }
- interface_opts.if_type = if_info->type;
-#ifdef HAVE_EXTCAP
- interface_opts.extcap = g_strdup(if_info->extcap);
-#endif
+ fill_in_interface_opts_from_ifinfo(&interface_opts, if_info);
free_interface_list(if_list);
} else if (capture_opts->capture_child) {
- /* In Wireshark capture child mode, thus proper device name is supplied. */
- /* No need for trying to match it for friendly names. */
- interface_opts.name = g_strdup(optarg_str_p);
- interface_opts.console_display_name = g_strdup(optarg_str_p);
- interface_opts.if_type = capture_opts->default_options.if_type;
-#ifdef HAVE_EXTCAP
- interface_opts.extcap = g_strdup(capture_opts->default_options.extcap);
-#endif
+ /*
+ * In Wireshark capture child mode, so the exact interface name
+ * is supplied, and we don't need to look it up.
+ */
+ if_info = if_info_get(optarg_str_p);
+ fill_in_interface_opts_from_ifinfo(&interface_opts, if_info);
+ if_info_free(if_info);
} else {
/*
- * Retrieve the interface list so that we can search for the
- * specified option amongst both the interface names and the
- * friendly names and so that we find the friendly name even
- * if an interface name was specified.
- *
- * If we can't get the list, just use the specified option as
- * the interface name, so that the user can try specifying an
- * interface explicitly for testing purposes.
+ * Search for that name in the interface list and, if we found
+ * it, fill in fields in the interface_opts structure.
*/
- if_list = capture_interface_list(&err, NULL, NULL);
- if (if_list != NULL) {
- /* try and do an exact match (case insensitive) */
- GList *if_entry;
- gboolean matched;
-
- matched = FALSE;
- for (if_entry = g_list_first(if_list); if_entry != NULL;
- if_entry = g_list_next(if_entry))
- {
- if_info = (if_info_t *)if_entry->data;
- /* exact name check */
- if (g_ascii_strcasecmp(if_info->name, optarg_str_p) == 0) {
- /* exact match on the interface name, use that for displaying etc */
- interface_opts.name = g_strdup(if_info->name);
-
- if (if_info->friendly_name != NULL) {
- /*
- * If we have a friendly name, use that for the
- * console display name, as it is the basis for
- * the auto generated temp filename.
- */
- interface_opts.console_display_name = g_strdup(if_info->friendly_name);
- } else {
- interface_opts.console_display_name = g_strdup(if_info->name);
- }
- interface_opts.if_type = if_info->type;
-#ifdef HAVE_EXTCAP
- interface_opts.extcap = g_strdup(if_info->extcap);
-#endif
- matched = TRUE;
- break;
- }
-
- /* exact friendly name check */
- if (if_info->friendly_name != NULL &&
- g_ascii_strcasecmp(if_info->friendly_name, optarg_str_p) == 0) {
- /* exact match - use the friendly name for display */
- interface_opts.name = g_strdup(if_info->name);
- interface_opts.console_display_name = g_strdup(if_info->friendly_name);
- interface_opts.if_type = if_info->type;
-#ifdef HAVE_EXTCAP
- interface_opts.extcap = g_strdup(if_info->extcap);
-#endif
- matched = TRUE;
- break;
- }
- }
-
- /* didn't find, attempt a case insensitive prefix match of the friendly name*/
- if (!matched) {
- size_t prefix_length;
-
- prefix_length = strlen(optarg_str_p);
- for (if_entry = g_list_first(if_list); if_entry != NULL;
- if_entry = g_list_next(if_entry))
- {
- if_info = (if_info_t *)if_entry->data;
-
- if (if_info->friendly_name != NULL &&
- g_ascii_strncasecmp(if_info->friendly_name, optarg_str_p, prefix_length) == 0) {
- /* prefix match - use the friendly name for display */
- interface_opts.name = g_strdup(if_info->name);
- interface_opts.console_display_name = g_strdup(if_info->friendly_name);
- interface_opts.if_type = if_info->type;
-#ifdef HAVE_EXTCAP
- interface_opts.extcap = g_strdup(if_info->extcap);
-#endif
- matched = TRUE;
- break;
- }
- }
- }
- if (!matched) {
- /*
- * We didn't find the interface in the list; just use
- * the specified name, so that, for example, if an
- * interface doesn't show up in the list for some
- * reason, the user can try specifying it explicitly
- * for testing purposes.
- */
- interface_opts.name = g_strdup(optarg_str_p);
- interface_opts.console_display_name = g_strdup(optarg_str_p);
- interface_opts.if_type = capture_opts->default_options.if_type;
-#ifdef HAVE_EXTCAP
- interface_opts.extcap = g_strdup(capture_opts->default_options.extcap);
-#endif
- }
- free_interface_list(if_list);
- } else {
+ if (!fill_in_interface_opts_from_ifinfo_by_name(&interface_opts,
+ optarg_str_p)) {
+ /*
+ * We didn't find the interface in the list; just use
+ * the specified name, so that, for example, if an
+ * interface doesn't show up in the list for some
+ * reason, the user can try specifying it explicitly
+ * for testing purposes.
+ */
interface_opts.name = g_strdup(optarg_str_p);
- interface_opts.console_display_name = g_strdup(optarg_str_p);
+ interface_opts.descr = NULL;
+ interface_opts.display_name = g_strdup(optarg_str_p);
interface_opts.if_type = capture_opts->default_options.if_type;
-#ifdef HAVE_EXTCAP
interface_opts.extcap = g_strdup(capture_opts->default_options.extcap);
-#endif
}
}
- /* We don't set iface_descr here because doing so requires
- * capture_ui_utils.c which requires epan/prefs.c which is
- * probably a bit too much dependency for here...
- */
- interface_opts.descr = g_strdup(capture_opts->default_options.descr);
interface_opts.cfilter = g_strdup(capture_opts->default_options.cfilter);
interface_opts.snaplen = capture_opts->default_options.snaplen;
interface_opts.has_snaplen = capture_opts->default_options.has_snaplen;
interface_opts.linktype = capture_opts->default_options.linktype;
interface_opts.promisc_mode = capture_opts->default_options.promisc_mode;
-#ifdef HAVE_EXTCAP
interface_opts.extcap_fifo = g_strdup(capture_opts->default_options.extcap_fifo);
interface_opts.extcap_args = NULL;
- interface_opts.extcap_pid = INVALID_EXTCAP_PID;
- interface_opts.extcap_userdata = NULL;
+ interface_opts.extcap_pid = WS_INVALID_PID;
+ interface_opts.extcap_pipedata = NULL;
#ifdef _WIN32
interface_opts.extcap_pipe_h = INVALID_HANDLE_VALUE;
interface_opts.extcap_control_in_h = INVALID_HANDLE_VALUE;
#endif
interface_opts.extcap_control_in = g_strdup(capture_opts->default_options.extcap_control_in);
interface_opts.extcap_control_out = g_strdup(capture_opts->default_options.extcap_control_out);
-#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
interface_opts.buffer_size = capture_opts->default_options.buffer_size;
#endif
break;
#endif
case 'c': /* Capture n packets */
+ /* XXX Use set_autostop_criterion instead? */
capture_opts->has_autostop_packets = TRUE;
capture_opts->autostop_packets = get_positive_int(optarg_str_p, "packet count");
break;
printf("%d. %s", i++, if_info->name);
/* Print the interface friendly name, if it exists;
- if not fall back to vendor description, if it exists. */
+ if not, fall back to the vendor description, if it exists. */
if (if_info->friendly_name != NULL){
printf(" (%s)", if_info->friendly_name);
} else {
g_free(interface_opts->name);
g_free(interface_opts->descr);
- g_free(interface_opts->console_display_name);
+ g_free(interface_opts->display_name);
g_free(interface_opts->cfilter);
g_free(interface_opts->timestamp_type);
-#ifdef HAVE_EXTCAP
g_free(interface_opts->extcap);
g_free(interface_opts->extcap_fifo);
if (interface_opts->extcap_args)
g_hash_table_unref(interface_opts->extcap_args);
- if (interface_opts->extcap_pid != INVALID_EXTCAP_PID)
- g_spawn_close_pid(interface_opts->extcap_pid);
- g_free(interface_opts->extcap_userdata);
+ if (interface_opts->extcap_pid != WS_INVALID_PID)
+ ws_pipe_close((ws_pipe_t *) interface_opts->extcap_pipedata);
+ g_free(interface_opts->extcap_pipedata);
g_free(interface_opts->extcap_control_in);
g_free(interface_opts->extcap_control_out);
-#endif
#ifdef HAVE_PCAP_REMOTE
if (interface_opts->src_type == CAPTURE_IFREMOTE) {
g_free(interface_opts->remote_host);
device = &g_array_index(capture_opts->all_ifaces, interface_t, i);
if (!device->hidden && device->selected) {
interface_opts.name = g_strdup(device->name);
- interface_opts.descr = g_strdup(device->display_name);
- interface_opts.console_display_name = g_strdup(device->name);
+ interface_opts.descr = g_strdup(device->friendly_name);
+ interface_opts.display_name = g_strdup(device->display_name);
interface_opts.linktype = device->active_dlt;
interface_opts.cfilter = g_strdup(device->cfilter);
interface_opts.timestamp_type = g_strdup(device->timestamp_type);
interface_opts.has_snaplen = device->has_snaplen;
interface_opts.promisc_mode = device->pmode;
interface_opts.if_type = device->if_info.type;
-#ifdef HAVE_EXTCAP
interface_opts.extcap = g_strdup(device->if_info.extcap);
interface_opts.extcap_fifo = NULL;
- interface_opts.extcap_userdata = NULL;
+ interface_opts.extcap_pipedata = NULL;
interface_opts.extcap_args = device->external_cap_args_settings;
- interface_opts.extcap_pid = INVALID_EXTCAP_PID;
+ interface_opts.extcap_pid = WS_INVALID_PID;
if (interface_opts.extcap_args)
g_hash_table_ref(interface_opts.extcap_args);
- interface_opts.extcap_userdata = NULL;
+ interface_opts.extcap_pipedata = NULL;
#ifdef _WIN32
interface_opts.extcap_pipe_h = INVALID_HANDLE_VALUE;
interface_opts.extcap_control_in_h = INVALID_HANDLE_VALUE;
#endif
interface_opts.extcap_control_in = NULL;
interface_opts.extcap_control_out = NULL;
-#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
interface_opts.buffer_size = device->buffer;
#endif
g_free(elem);
}
-static void
-capture_opts_free_interface_t_addrs(gpointer elem, gpointer unused _U_)
-{
- g_free(elem);
-}
-
void
capture_opts_free_interface_t(interface_t *device)
{
g_free(device->if_info.name);
g_free(device->if_info.friendly_name);
g_free(device->if_info.vendor_description);
- g_slist_foreach(device->if_info.addrs,
- capture_opts_free_interface_t_addrs, NULL);
- g_slist_free(device->if_info.addrs);
-#ifdef HAVE_EXTCAP
+ g_slist_free_full(device->if_info.addrs, g_free);
g_free(device->if_info.extcap);
-#endif
}
}
git.samba.org / metze / wireshark / wip.git / blobdiff