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/* $Id: files.c 2132 2005-07-31 16:45:01Z twogood $ */
/* play with defines to allow snprintf() */
#undef __STRICT_ANSI__
#define _GNU_SOURCE 1
#include "synce.h"
#include "synce_log.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pwd.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#define DIRECTORY_NAME ".synce"
#define DEFAULT_CONNECTION_FILENAME "active_connection"
#define SCRIPT_DIRECTORY "scripts"
static char connection_filename[MAX_PATH] = {DEFAULT_CONNECTION_FILENAME};
static bool make_sure_directory_exists(char* directory)
{
struct stat dir_stat;
/*
* Make sure that this directory exists
*/
if (stat(directory, &dir_stat) < 0)
{
if (mkdir(directory, 0700) < 0)
{
synce_error("Failed to create directory %s", directory);
return false;
}
}
return true;
}
/**
* Get path to config files
*/
bool synce_get_directory(char** path)
{
char buffer[MAX_PATH];
char *p;
struct passwd* user = NULL;
if (!path)
return false;
/* if there is a preference for config dir set
as an environment variable, use it */
if ((p = getenv ("SYNCE_CONF_DIR")) != NULL) {
if (make_sure_directory_exists (p)) {
*path = strdup (p);
return true;
}
}
/* XXX: not very thread-safe? */
user = getpwuid(getuid());
*path = NULL;
if (!user)
return false;
snprintf(buffer, sizeof(buffer), "%s/" DIRECTORY_NAME, user->pw_dir);
if (!make_sure_directory_exists(buffer))
return false;
*path = strdup(buffer);
return true;
}
/**
Set the file name used for active connection info
*/
bool synce_set_connection_filename(const char* filename)
{
bool success = false;
/* disallow file names containing '..' */
if (filename && !strstr(filename, ".."))
{
/* Use snprintf to limit length and assure string is terminated with 0 */
int n = snprintf(connection_filename, sizeof(connection_filename), "%s", filename);
/* Return false if file name was too long or some other error occured */
success = (n >= 0 && n < (int)sizeof(connection_filename));
}
if (!success)
synce_warning("Invalid filename: '%s'", filename);
return success;
}
/*
Restore the default filename used for active connection info
*/
bool synce_set_default_connection_filename()
{
return synce_set_connection_filename(DEFAULT_CONNECTION_FILENAME);
}
/**
* Get file name for active connection info
*/
bool synce_get_connection_filename(char** filename)
{
bool success = false;
char* path = NULL;
char buffer[MAX_PATH];
if (!filename)
goto exit;
*filename = NULL;
if (!synce_get_directory(&path))
goto exit;
snprintf(buffer, sizeof(buffer), "%s/%s" , path, connection_filename);
*filename = strdup(buffer);
success = true;
exit:
if (path)
free(path);
return success;
}
bool synce_get_subdirectory(const char* name, char** directory)
{
bool success = false;
char* path = NULL;
char buffer[MAX_PATH];
if (!name || !directory)
goto exit;
if (strchr(name, '/')) /* prevent bad names */
goto exit;
*directory = NULL;
if (!synce_get_directory(&path))
goto exit;
snprintf(buffer, sizeof(buffer), "%s/%s", path, name);
if (!make_sure_directory_exists(buffer))
goto exit;
*directory = strdup(buffer);
success = true;
exit:
if (path)
free(path);
return success;
}
bool synce_get_script_directory(char** directory)
{
return synce_get_subdirectory(SCRIPT_DIRECTORY, directory);
}
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