mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
synced 2026-01-01 15:20:11 +01:00
95 lines
2.8 KiB
C
95 lines
2.8 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 program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Copyright (C) 2004 - 2010 Red Hat, Inc.
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*/
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#include <config.h>
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#include <string.h>
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#include "nm-policy-hosts.h"
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#include "nm-logging.h"
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#define ADDED_TAG "# Added by NetworkManager"
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GString *
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nm_policy_get_etc_hosts (const char *contents, gsize contents_len)
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{
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char **lines = NULL, **iter;
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GString *new_contents = NULL;
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if (contents_len == 0 || !strstr (contents, ADDED_TAG))
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return NULL;
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new_contents = g_string_sized_new (contents_len);
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/* Remove "# Added ..." lines */
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lines = g_strsplit_set (contents, "\n\r", -1);
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for (iter = lines; iter && *iter; iter++) {
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if (!strstr (*iter, ADDED_TAG)) {
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g_string_append (new_contents, *iter);
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g_string_append_c (new_contents, '\n');
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}
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}
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g_strfreev (lines);
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/* Remove last blank line at end of file, if one exists; this is
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* an artifact of how g_strsplit_set() works.
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*/
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if ( (new_contents->len > 2)
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&& (new_contents->str[new_contents->len - 1] == '\n'))
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g_string_truncate (new_contents, new_contents->len - 1);
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return new_contents;
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}
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/* remove any leftover "# Added by NetworkManager" lines */
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void
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nm_policy_hosts_clean_etc_hosts (void)
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{
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char *contents = NULL;
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gsize contents_len = 0;
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GError *error = NULL;
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GString *new;
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if (!g_file_get_contents (SYSCONFDIR "/hosts", &contents, &contents_len, &error)) {
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nm_log_dbg (LOGD_DNS, "couldn't read " SYSCONFDIR "/hosts: (%d) %s",
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error ? error->code : 0,
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(error && error->message) ? error->message : "(unknown)");
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g_clear_error (&error);
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return;
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}
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new = nm_policy_get_etc_hosts (contents, contents_len);
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g_free (contents);
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if (new && new->len) {
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nm_log_dbg (LOGD_DNS, "Cleaning leftovers from /etc/hosts");
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g_clear_error (&error);
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if (!g_file_set_contents (SYSCONFDIR "/hosts", new->str, -1, &error)) {
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nm_log_dbg (LOGD_DNS, "couldn't update " SYSCONFDIR "/hosts: (%d) %s",
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error ? error->code : 0,
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(error && error->message) ? error->message : "(unknown)");
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g_clear_error (&error);
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}
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}
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if (new)
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g_string_free (new, TRUE);
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}
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