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/**
src/common.c
This file implements some useful common functionalities for handling the register files used in Bellagio
Copyright (C) 2007-2011 STMicroelectronics
Copyright (C) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free
Software Foundation; either version 2.1 of the License, or (at your option)
any later version.
This library 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 Lesser General Public License for more
details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
#include "config.h"
#include "common.h"
#define REGISTRY_FILENAME ".omxregister"
#define REGISTRY_DIR "/var/lib/libomxil-bellagio0/"
#ifdef ANDROID_COMPILATION
#define TMP_DATA_DIRECTORY "/data/omx/"
#else
#define TMP_DATA_DIRECTORY "/tmp/"
#endif
/** @brief Get registry filename
* This function returns the name of the registry file for the components loaded with the default component loader.
*/
char* componentsRegistryGetFilename(void) {
return componentsRegistryGetFilenameCheck(0);
}
char* componentsRegistryGetFilenameCheck(int check_exists) {
char *omxregistryfile = NULL;
char *buffer;
struct stat sb;
buffer=getenv("OMX_BELLAGIO_REGISTRY");
if(buffer!=NULL&&*buffer!='\0') {
omxregistryfile = strdup(buffer);
if (!check_exists||stat(omxregistryfile, &sb) == 0) {
return omxregistryfile;
} else {
if (omxregistryfile) {
free(omxregistryfile);
omxregistryfile=NULL;
}
}
return NULL;
}
buffer=getenv("XDG_DATA_HOME");
if(buffer!=NULL&&*buffer!='\0') {
omxregistryfile = malloc(strlen(buffer) + strlen(REGISTRY_FILENAME) + 2);
strcpy(omxregistryfile, buffer);
strcat(omxregistryfile, "/");
strcat(omxregistryfile, REGISTRY_FILENAME);
if (!check_exists||stat(omxregistryfile, &sb) == 0) {
return omxregistryfile;
} else {
if (omxregistryfile) {
free(omxregistryfile);
omxregistryfile=NULL;
}
}
}
buffer=getenv("HOME");
if(buffer!=NULL&&*buffer!='\0') {
omxregistryfile = malloc(strlen(buffer) + strlen(REGISTRY_FILENAME) + 3);
strcpy(omxregistryfile, buffer);
strcat(omxregistryfile, "/");
strcat(omxregistryfile, REGISTRY_FILENAME);
} else {
omxregistryfile = malloc(strlen(TMP_DATA_DIRECTORY) + strlen(REGISTRY_FILENAME) + 2);
strcpy(omxregistryfile, TMP_DATA_DIRECTORY);
strcat(omxregistryfile, REGISTRY_FILENAME);
}
if (!check_exists||stat(omxregistryfile, &sb) == 0) {
return omxregistryfile;
} else {
if (omxregistryfile) {
free(omxregistryfile);
omxregistryfile=NULL;
}
}
omxregistryfile = malloc(strlen(REGISTRY_DIR) + strlen("registry") + 2);
strcpy(omxregistryfile, REGISTRY_DIR);
strcat(omxregistryfile, "registry");
return omxregistryfile;
}
/* This function return the absolute path of the registry_name file or
* directory depending by the environment variable set.
* the variables considered in order are:
* $XDG_DATA_HOME
* $HOME
* TMP_DATA_DIRECTORY (/tmp by default on Linux)
* The function does not check for file/dir existence
*/
char* loadersRegistryGetFilename(char* registry_name) {
char *omxregistryfile = NULL;
char *buffer;
buffer=getenv("XDG_DATA_HOME");
if(buffer!=NULL&&*buffer!='\0') {
omxregistryfile = malloc(strlen(buffer) + strlen(registry_name) + 2);
strcpy(omxregistryfile, buffer);
strcat(omxregistryfile, "/");
strcat(omxregistryfile, registry_name);
return omxregistryfile;
}
buffer=getenv("HOME");
if(buffer!=NULL&&*buffer!='\0') {
omxregistryfile = malloc(strlen(buffer) + strlen(registry_name) + 3);
strcpy(omxregistryfile, buffer);
strcat(omxregistryfile, "/");
strcat(omxregistryfile, registry_name);
} else {
omxregistryfile = malloc(strlen(TMP_DATA_DIRECTORY) + strlen(registry_name) + 2);
strcpy(omxregistryfile, TMP_DATA_DIRECTORY);
strcat(omxregistryfile, registry_name);
}
return omxregistryfile;
}
/** This function creates the directory specified by newdir
* It returns 1 if is not possible to create it
* It returns 0 if the directory is created or it already exists
*/
int makedir (const char *newdir) {
char *buffer;
char *p;
int err;
size_t len;
buffer = strdup(newdir);
len = strlen(buffer);
if (len == 0) {
free(buffer);
return 1;
}
if (buffer[len-1] == '/') {
buffer[len-1] = '\0';
}
err = mkdir(buffer, 0755);
if (err == 0 || (( err == -1) && (errno == EEXIST))) {
free(buffer);
return 0;
}
p = buffer+1;
while (1) {
char hold;
while(*p && *p != '\\' && *p != '/')
p++;
hold = *p;
*p = 0;
if ((mkdir(buffer, 0755) == -1) && (errno == ENOENT)) {
free(buffer);
return 1;
}
if (hold == 0)
break;
*p++ = hold;
}
free(buffer);
return 0;
}
int exists(const char* fname) {
FILE *file;
if ((file = fopen(fname, "r")))
{
fclose(file);
return 1;
}
return 0;
}
#ifdef COMMON_TEST
int main (int argc, char*argv[]) {
printf (componentsRegistryGetFilename (1));
}
#endif
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