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|
/* -*- Mode: C ; c-basic-offset: 2 -*- */
/*
* ALSA SEQ < - > JACK MIDI bridge
*
* Copyright (c) 2008,2009 Nedko Arnaudov <nedko@arnaudov.name>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <sys/stat.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "paths.h"
#include "log.h"
#define DEFAULT_XDG_LOG "/.log"
#define DEFAULT_XDG_CONF "/.config"
#define A2J_XDG_SUBDIR "/a2j"
#define A2J_XDG_LOG "/a2j.log"
#define A2J_XDG_CONF "/a2j.conf"
char * g_a2j_log_path = NULL;
char * g_a2j_conf_path = NULL;
char *
catdup(
const char * str1,
const char * str2)
{
char * str;
size_t str1_len;
size_t str2_len;
str1_len = strlen(str1);
str2_len = strlen(str2);
str = malloc(str1_len + str2_len + 1);
if (str == NULL)
{
return NULL;
}
memcpy(str, str1, str1_len);
memcpy(str + str1_len, str2, str2_len);
str[str1_len + str2_len] = 0;
return str;
}
bool
ensure_dir_exist(
const char * dirname,
int mode)
{
struct stat st;
if (stat(dirname, &st) != 0)
{
if (errno == ENOENT)
{
a2j_info("Directory \"%s\" does not exist. Creating...", dirname);
if (mkdir(dirname, mode) != 0)
{
a2j_error("Failed to create \"%s\" directory: %d (%s)", dirname, errno, strerror(errno));
return false;
}
}
else
{
a2j_error("Failed to stat \"%s\": %d (%s)", dirname, errno, strerror(errno));
return false;
}
}
else
{
if (!S_ISDIR(st.st_mode))
{
a2j_error("\"%s\" exists but is not directory.", dirname);
return false;
}
}
return true;
}
char *
a2j_path_init(
const char * home_dir,
const char * purpose_subdir,
const char * file)
{
char * dir1;
char * dir2;
char * filepath;
filepath = NULL;
dir1 = catdup(home_dir, purpose_subdir);
if (dir1 == NULL)
{
a2j_error("Out of memory");
goto exit;
}
dir2 = catdup(dir1, A2J_XDG_SUBDIR);
if (dir2 == NULL)
{
a2j_error("Out of memory");
goto free_dir1;
}
if (!ensure_dir_exist(dir1, 0700))
{
goto free_dir1;
}
if (!ensure_dir_exist(dir2, 0700))
{
goto free_dir2;
}
filepath = catdup(dir2, file);
if (filepath == NULL)
{
a2j_error("Out of memory");
}
free_dir2:
free(dir2);
free_dir1:
free(dir1);
exit:
return filepath;
}
bool
a2j_paths_init()
{
const char * home_dir;
home_dir = getenv("HOME");
if (home_dir == NULL)
{
a2j_error("Environment variable HOME not set");
goto exit;
}
g_a2j_log_path = a2j_path_init(home_dir, DEFAULT_XDG_LOG, A2J_XDG_LOG);
if (g_a2j_log_path == NULL)
{
goto exit;
}
g_a2j_conf_path = a2j_path_init(home_dir, DEFAULT_XDG_CONF, A2J_XDG_CONF);
if (g_a2j_conf_path == NULL)
{
goto free_log_path;
}
return true;
free_log_path:
free(g_a2j_log_path);
exit:
return false;
}
void
a2j_paths_uninit()
{
if (g_a2j_conf_path != NULL)
{
free(g_a2j_conf_path);
}
if (g_a2j_log_path != NULL)
{
free(g_a2j_log_path);
}
}
|
