forked from osmocom/wireshark
139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
/*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 2001 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <string.h>
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#include <stdlib.h>
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#include <ftypes-int.h>
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#include <epan/guid-utils.h>
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#include <epan/to_str.h>
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static void
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guid_fvalue_set_guid(fvalue_t *fv, const e_guid_t *value)
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{
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fv->value.guid = *value;
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}
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static gpointer
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value_get(fvalue_t *fv)
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{
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return &(fv->value.guid);
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}
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static gboolean
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get_guid(const char *s, e_guid_t *guid)
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{
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size_t i, n;
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const char *p;
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char digits[3];
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static const char fmt[] = "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX";
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const size_t fmtchars = sizeof(fmt) - 1;
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n = strnlen(s, fmtchars);
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if (n != fmtchars)
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return FALSE;
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for (i=0; i<n; i++) {
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if (fmt[i] == 'X') {
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if (!g_ascii_isxdigit(s[i]))
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return FALSE;
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} else {
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if (s[i] != fmt[i])
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return FALSE;
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}
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}
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p = s;
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guid->data1 = (guint32)strtoul(p, NULL, 16);
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p += 9;
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guid->data2 = (guint16)strtoul(p, NULL, 16);
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p += 5;
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guid->data3 = (guint16)strtoul(p, NULL, 16);
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p += 5;
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for (i=0; i < sizeof(guid->data4); i++) {
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if (*p == '-') p++;
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digits[0] = *(p++);
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digits[1] = *(p++);
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digits[2] = '\0';
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guid->data4[i] = (guint8)strtoul(digits, NULL, 16);
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}
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return TRUE;
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}
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static gboolean
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guid_from_unparsed(fvalue_t *fv, const char *s, gboolean allow_partial_value _U_, gchar **err_msg)
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{
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e_guid_t guid;
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if (!get_guid(s, &guid)) {
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if (err_msg != NULL)
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*err_msg = ws_strdup_printf("\"%s\" is not a valid GUID.", s);
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return FALSE;
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}
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fv->value.guid = guid;
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return TRUE;
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}
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static char *
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guid_to_repr(wmem_allocator_t *scope, const fvalue_t *fv, ftrepr_t rtype _U_, int field_display _U_)
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{
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return guid_to_str(scope, &fv->value.guid);
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}
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static int
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cmp_order(const fvalue_t *a, const fvalue_t *b)
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{
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return memcmp(&a->value.guid, &b->value.guid, sizeof(e_guid_t));
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}
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void
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ftype_register_guid(void)
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{
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static ftype_t guid_type = {
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FT_GUID, /* ftype */
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"FT_GUID", /* name */
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"Globally Unique Identifier", /* pretty_name */
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GUID_LEN, /* wire_size */
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NULL, /* new_value */
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NULL, /* free_value */
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guid_from_unparsed, /* val_from_unparsed */
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NULL, /* val_from_string */
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NULL, /* val_from_charconst */
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guid_to_repr, /* val_to_string_repr */
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{ .set_value_guid = guid_fvalue_set_guid }, /* union set_value */
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{ .get_value_ptr = value_get }, /* union get_value */
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cmp_order,
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NULL,
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NULL,
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NULL, /* cmp_matches */
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NULL,
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NULL,
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};
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ftype_register(FT_GUID, &guid_type);
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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