1 files changed, 147 insertions, 0 deletions
diff --git a/epan/range.h b/epan/range.h
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+/* range.h
+ * Range routines
+ *
+ * Dick Gooris <gooris@lucent.com>
+ * Ulf Lamping <ulf.lamping@web.de>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef __RANGE_H__
+#define __RANGE_H__
+
+#include <glib.h>
+#include "ws_symbol_export.h"
+#include <epan/wmem_scopes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** @file
+ * Range strings a variant of value_strings
+ */
+
+/**@todo where's the best place for these? */
+#define MAX_SCTP_PORT 65535
+#define MAX_TCP_PORT 65535
+#define MAX_UDP_PORT 65535
+#define MAX_DCCP_PORT 65535
+
+typedef struct range_admin_tag {
+    guint32 low;
+    guint32 high;
+} range_admin_t;
+#define RANGE_ADMIN_T_INITIALIZER { 0, 0 }
+
+/** user specified range(s) */
+typedef struct epan_range {
+    guint           nranges;   /**< number of entries in ranges */
+    range_admin_t   ranges[1]; /**< variable-length array */
+} range_t;
+
+/**
+ * Return value from range_convert_str().
+ */
+typedef enum {
+    CVT_NO_ERROR,
+    CVT_SYNTAX_ERROR,
+    CVT_NUMBER_TOO_BIG
+} convert_ret_t;
+
+WS_DLL_PUBLIC range_t *range_empty(wmem_allocator_t *scope);
+
+
+/*** Converts a range string to a fast comparable array of ranges.
+ * This function allocates a range_t large enough to hold the number
+ * of ranges specified, and fills the array range->ranges containing
+ * low and high values with the number of ranges being range->nranges.
+ * After having called this function, the function value_is_in_range()
+ * determines whether a given number is within the range or not.<BR>
+ * In case of a single number, we make a range where low is equal to high.
+ * We take care on wrongly entered ranges; opposite order will be taken
+ * care of.
+ *
+ * The following syntax is accepted :
+ *
+ *   1-20,30-40     Range from 1 to 20, and packets 30 to 40
+ *   -20,30         Range from 1 to 20, and packet 30
+ *   20,30,40-      20, 30, and the range from 40 to the end
+ *   20-10,30-25    Range from 10 to 20, and from 25 to 30
+ *   -              All values
+ * @param scope memory scope for the range
+ * @param range the range
+ * @param es points to the string to be converted.
+ * @param max_value specifies the maximum value in a range.
+ * @return convert_ret_t
+ */
+WS_DLL_PUBLIC convert_ret_t range_convert_str(wmem_allocator_t *scope, range_t **range, const gchar *es,
+    guint32 max_value);
+
+WS_DLL_PUBLIC convert_ret_t range_convert_str_work(wmem_allocator_t *scope, range_t **range, const gchar *es,
+    guint32 max_value, gboolean err_on_max);
+
+/** This function returns TRUE if a given value is within one of the ranges
+ * stored in the ranges array.
+ * @param range the range
+ * @param val the value to check
+ * @return TRUE if the value is in range
+ */
+WS_DLL_PUBLIC gboolean value_is_in_range(const range_t *range, guint32 val);
+
+/** This function returns TRUE if val has successfully been added to
+ * a range.  This may extend an existing range or create a new one
+ * @param scope memory scope of range (in case of reallocation)
+ * @param range to add value
+ * @param val value to add to range
+ * @return TRUE if the value is successsfully added to range
+ */
+WS_DLL_PUBLIC gboolean range_add_value(wmem_allocator_t *scope, range_t **range, guint32 val);
+
+/** This function returns TRUE if val has successfully been removed from
+ * a range.  This may remove an existing range.
+ * @param scope memory scope of range (in case of reallocation)
+ * @param range to remove value
+ * @param val value to remove within range
+ * @return TRUE if the value is successsfully removed to range
+ */
+WS_DLL_PUBLIC gboolean range_remove_value(wmem_allocator_t *scope, range_t **range, guint32 val);
+
+/** This function returns TRUE if the two given range_t's are equal.
+ * @param a first range
+ * @param b second range
+ * @return TRUE if the value is in range
+ */
+WS_DLL_PUBLIC gboolean ranges_are_equal(const range_t *a, const range_t *b);
+
+/** This function calls the provided callback function for each value in
+ * in the range. Takes a pointer argument, which is passed to the
+ * callback, along with the value in the range.
+ * @param range the range
+ * @param callback the callback function
+ * @param ptr pointer passed to the callback
+ */
+WS_DLL_PUBLIC void range_foreach(range_t *range, void (*callback)(guint32 val, gpointer ptr), gpointer ptr);
+
+/**
+ * This function converts a range_t to a (wmem_alloc()-allocated) string.
+ */
+WS_DLL_PUBLIC char *range_convert_range(wmem_allocator_t *scope, const range_t *range);
+
+/**
+ * Create a (wmem-alloc()ed) copy of a range
+ * @param scope memory scope for the copied range
+ * @param src the range to copy
+ * @return ep allocated copy of the range
+ */
+WS_DLL_PUBLIC range_t *range_copy(wmem_allocator_t *scope, const range_t *src);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __RANGE_H__ */