303 lines
10 KiB
C
303 lines
10 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* NetworkManager -- Network link manager
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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* (C) Copyright 2016 Red Hat, Inc.
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*/
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#ifndef __NM_SHARED_UTILS_H__
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#define __NM_SHARED_UTILS_H__
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#include <netinet/in.h>
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/*****************************************************************************/
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typedef struct {
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union {
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guint8 addr_ptr[1];
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in_addr_t addr4;
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struct in6_addr addr6;
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/* NMIPAddr is really a union for IP addresses.
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* However, as ethernet addresses fit in here nicely, use
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* it also for an ethernet MAC address. */
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guint8 addr_eth[6 /*ETH_ALEN*/];
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};
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} NMIPAddr;
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extern const NMIPAddr nm_ip_addr_zero;
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/*****************************************************************************/
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#define NM_CMP_RETURN(c) \
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G_STMT_START { \
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const int _cc = (c); \
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if (_cc) \
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return _cc < 0 ? -1 : 1; \
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} G_STMT_END
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#define NM_CMP_SELF(a, b) \
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G_STMT_START { \
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typeof (a) _a = (a); \
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typeof (b) _b = (b); \
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\
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if (_a == _b) \
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return 0; \
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if (!_a) \
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return -1; \
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if (!_b) \
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return 1; \
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} G_STMT_END
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#define NM_CMP_DIRECT(a, b) \
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G_STMT_START { \
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typeof (a) _a = (a); \
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typeof (b) _b = (b); \
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\
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if (_a != _b) \
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return (_a < _b) ? -1 : 1; \
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} G_STMT_END
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#define NM_CMP_DIRECT_MEMCMP(a, b, size) \
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NM_CMP_RETURN (memcmp ((a), (b), (size)))
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#define NM_CMP_DIRECT_IN6ADDR(a, b) \
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G_STMT_START { \
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const struct in6_addr *const _a = (a); \
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const struct in6_addr *const _b = (b); \
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NM_CMP_RETURN (memcmp (_a, _b, sizeof (struct in6_addr))); \
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} G_STMT_END
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#define NM_CMP_FIELD(a, b, field) \
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NM_CMP_DIRECT (((a)->field), ((b)->field))
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#define NM_CMP_FIELD_UNSAFE(a, b, field) \
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G_STMT_START { \
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/* it's unsafe, because it evaluates the arguments more then once.
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* This is necessary for bitfields, for which typeof() doesn't work. */ \
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if (((a)->field) != ((b)->field)) \
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return ((a)->field < ((b)->field)) ? -1 : 1; \
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} G_STMT_END
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#define NM_CMP_FIELD_BOOL(a, b, field) \
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NM_CMP_DIRECT (!!((a)->field), !!((b)->field))
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#define NM_CMP_FIELD_STR(a, b, field) \
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NM_CMP_RETURN (strcmp (((a)->field), ((b)->field)))
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#define NM_CMP_FIELD_STR_INTERNED(a, b, field) \
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G_STMT_START { \
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const char *_a = ((a)->field); \
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const char *_b = ((b)->field); \
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\
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if (_a != _b) { \
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NM_CMP_RETURN (g_strcmp0 (_a, _b)); \
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} \
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} G_STMT_END
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#define NM_CMP_FIELD_STR0(a, b, field) \
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NM_CMP_RETURN (g_strcmp0 (((a)->field), ((b)->field)))
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#define NM_CMP_FIELD_MEMCMP_LEN(a, b, field, len) \
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NM_CMP_RETURN (memcmp (&((a)->field), &((b)->field), \
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MIN (len, sizeof ((a)->field))))
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#define NM_CMP_FIELD_MEMCMP(a, b, field) \
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NM_CMP_RETURN (memcmp (&((a)->field), \
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&((b)->field), \
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sizeof ((a)->field)))
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#define NM_CMP_FIELD_IN6ADDR(a, b, field) \
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G_STMT_START { \
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const struct in6_addr *const _a = &((a)->field); \
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const struct in6_addr *const _b = &((b)->field); \
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NM_CMP_RETURN (memcmp (_a, _b, sizeof (struct in6_addr))); \
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} G_STMT_END
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/*****************************************************************************/
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extern const void *const _NM_PTRARRAY_EMPTY[1];
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#define NM_PTRARRAY_EMPTY(type) ((type const*) _NM_PTRARRAY_EMPTY)
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static inline void
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_nm_utils_strbuf_init (char *buf, gsize len, char **p_buf_ptr, gsize *p_buf_len)
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{
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NM_SET_OUT (p_buf_len, len);
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NM_SET_OUT (p_buf_ptr, buf);
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buf[0] = '\0';
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}
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#define nm_utils_strbuf_init(buf, p_buf_ptr, p_buf_len) \
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G_STMT_START { \
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G_STATIC_ASSERT (G_N_ELEMENTS (buf) == sizeof (buf) && sizeof (buf) > sizeof (char *)); \
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_nm_utils_strbuf_init ((buf), sizeof (buf), (p_buf_ptr), (p_buf_len)); \
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} G_STMT_END
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void nm_utils_strbuf_append (char **buf, gsize *len, const char *format, ...) _nm_printf (3, 4);
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void nm_utils_strbuf_append_c (char **buf, gsize *len, char c);
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void nm_utils_strbuf_append_str (char **buf, gsize *len, const char *str);
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/*****************************************************************************/
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const char **nm_utils_strsplit_set (const char *str, const char *delimiters);
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gssize nm_utils_strv_find_first (char **list, gssize len, const char *needle);
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char **_nm_utils_strv_cleanup (char **strv,
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gboolean strip_whitespace,
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gboolean skip_empty,
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gboolean skip_repeated);
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/*****************************************************************************/
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guint32 _nm_utils_ip4_prefix_to_netmask (guint32 prefix);
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guint32 _nm_utils_ip4_get_default_prefix (guint32 ip);
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gboolean nm_utils_ip_is_site_local (int addr_family,
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const void *address);
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/*****************************************************************************/
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gboolean nm_utils_parse_inaddr_bin (const char *text,
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int family,
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gpointer out_addr);
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gboolean nm_utils_parse_inaddr (const char *text,
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int family,
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char **out_addr);
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gboolean nm_utils_parse_inaddr_prefix_bin (const char *text,
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int family,
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gpointer out_addr,
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int *out_prefix);
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gboolean nm_utils_parse_inaddr_prefix (const char *text,
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int family,
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char **out_addr,
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int *out_prefix);
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gint64 _nm_utils_ascii_str_to_int64 (const char *str, guint base, gint64 min, gint64 max, gint64 fallback);
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gint _nm_utils_ascii_str_to_bool (const char *str,
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gint default_value);
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/*****************************************************************************/
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#define _nm_g_slice_free_fcn_define(mem_size) \
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static inline void \
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_nm_g_slice_free_fcn_##mem_size (gpointer mem_block) \
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{ \
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g_slice_free1 (mem_size, mem_block); \
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}
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_nm_g_slice_free_fcn_define (1)
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_nm_g_slice_free_fcn_define (2)
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_nm_g_slice_free_fcn_define (4)
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_nm_g_slice_free_fcn_define (8)
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_nm_g_slice_free_fcn_define (12)
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_nm_g_slice_free_fcn_define (16)
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#define _nm_g_slice_free_fcn1(mem_size) \
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({ \
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void (*_fcn) (gpointer); \
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\
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/* If mem_size is a compile time constant, the compiler
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* will be able to optimize this. Hence, you don't want
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* to call this with a non-constant size argument. */ \
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switch (mem_size) { \
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case 1: _fcn = _nm_g_slice_free_fcn_1; break; \
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case 2: _fcn = _nm_g_slice_free_fcn_2; break; \
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case 4: _fcn = _nm_g_slice_free_fcn_4; break; \
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case 8: _fcn = _nm_g_slice_free_fcn_8; break; \
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case 12: _fcn = _nm_g_slice_free_fcn_12; break; \
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case 16: _fcn = _nm_g_slice_free_fcn_16; break; \
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default: g_assert_not_reached (); _fcn = NULL; break; \
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} \
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_fcn; \
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})
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/**
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* nm_g_slice_free_fcn:
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* @type: type argument for sizeof() operator that you would
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* pass to g_slice_new().
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*
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* Returns: a function pointer with GDestroyNotify signature
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* for g_slice_free(type,*).
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*
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* Only certain types are implemented. You'll get an assertion
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* using the wrong type. */
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#define nm_g_slice_free_fcn(type) (_nm_g_slice_free_fcn1 (sizeof (type)))
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#define nm_g_slice_free_fcn_gint64 (nm_g_slice_free_fcn (gint64))
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/*****************************************************************************/
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/**
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* NMUtilsError:
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* @NM_UTILS_ERROR_UNKNOWN: unknown or unclassified error
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* @NM_UTILS_ERROR_CANCELLED_DISPOSING: when disposing an object that has
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* pending aynchronous operations, the operation is cancelled with this
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* error reason. Depending on the usage, this might indicate a bug because
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* usually the target object should stay alive as long as there are pending
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* operations.
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* @NM_UTILS_ERROR_INVALID_ARGUMENT: invalid argument.
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*/
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typedef enum {
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NM_UTILS_ERROR_UNKNOWN = 0, /*< nick=Unknown >*/
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NM_UTILS_ERROR_CANCELLED_DISPOSING, /*< nick=CancelledDisposing >*/
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NM_UTILS_ERROR_INVALID_ARGUMENT, /*< nick=InvalidArgument >*/
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} NMUtilsError;
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#define NM_UTILS_ERROR (nm_utils_error_quark ())
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GQuark nm_utils_error_quark (void);
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void nm_utils_error_set_cancelled (GError **error,
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gboolean is_disposing,
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const char *instance_name);
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gboolean nm_utils_error_is_cancelled (GError *error,
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gboolean consider_is_disposing);
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/*****************************************************************************/
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gboolean nm_g_object_set_property (GObject *object,
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const gchar *property_name,
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const GValue *value,
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GError **error);
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GParamSpec *nm_g_object_class_find_property_from_gtype (GType gtype,
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const char *property_name);
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/*****************************************************************************/
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typedef enum {
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NM_UTILS_STR_UTF8_SAFE_FLAG_NONE = 0,
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NM_UTILS_STR_UTF8_SAFE_FLAG_ESCAPE_CTRL = 0x0001,
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NM_UTILS_STR_UTF8_SAFE_FLAG_ESCAPE_NON_ASCII = 0x0002,
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} NMUtilsStrUtf8SafeFlags;
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const char *nm_utils_str_utf8safe_escape (const char *str, NMUtilsStrUtf8SafeFlags flags, char **to_free);
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const char *nm_utils_str_utf8safe_unescape (const char *str, char **to_free);
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char *nm_utils_str_utf8safe_escape_cp (const char *str, NMUtilsStrUtf8SafeFlags flags);
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char *nm_utils_str_utf8safe_unescape_cp (const char *str);
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char *nm_utils_str_utf8safe_escape_take (char *str, NMUtilsStrUtf8SafeFlags flags);
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/*****************************************************************************/
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#endif /* __NM_SHARED_UTILS_H__ */
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