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/*
* Copyright (C) 2016 "IoT.bzh"
* Author Fulup Ar Foll <fulup@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <sys/stat.h>
#include <string.h>
#include <time.h>
#include <sys/prctl.h>
#include <dirent.h>
#include "filescan-utils.h"
// List Avaliable Configuration Files
PUBLIC json_object* ScanForConfig (const char* searchPath, CtlScanDirModeT mode, const char *pre, const char *ext) {
json_object *responseJ;
char *dirPath;
char* dirList= strdup(searchPath);
size_t extLen=0;
void ScanDir (char *searchPath) {
DIR *dirHandle;
struct dirent *dirEnt;
dirHandle = opendir (searchPath);
if (!dirHandle) {
AFB_DEBUG ("CONFIG-SCANNING dir=%s not readable", searchPath);
return;
}
//AFB_NOTICE ("CONFIG-SCANNING:ctl_listconfig scanning: %s", searchPath);
while ((dirEnt = readdir(dirHandle)) != NULL) {
// recursively search embedded directories ignoring any directory starting by '.' or '_'
if (dirEnt->d_type == DT_DIR && mode == CTL_SCAN_RECURSIVE) {
char newpath[CONTROL_MAXPATH_LEN];
if (dirEnt->d_name[0]=='.' || dirEnt->d_name[0]=='_') continue;
strncpy(newpath, searchPath, sizeof(newpath));
strncat(newpath, "/", sizeof(newpath)-strlen(newpath)-1);
strncat(newpath, dirEnt->d_name, sizeof(newpath)-strlen(newpath)-1);
ScanDir(newpath);
continue;
}
// Unknown type is accepted to support dump filesystems
if (dirEnt->d_type == DT_REG || dirEnt->d_type == DT_UNKNOWN) {
// check prefix and extention
size_t extIdx=strlen(dirEnt->d_name)-extLen;
if (extIdx <= 0) continue;
if (pre && !strcasestr (dirEnt->d_name, pre)) continue;
if (ext && strcasecmp (ext, &dirEnt->d_name[extIdx])) continue;
struct json_object *pathJ = json_object_new_object();
json_object_object_add(pathJ, "fullpath", json_object_new_string(searchPath));
json_object_object_add(pathJ, "filename", json_object_new_string(dirEnt->d_name));
json_object_array_add(responseJ, pathJ);
}
}
closedir(dirHandle);
}
if (ext) extLen=strlen(ext);
responseJ = json_object_new_array();
// loop recursively on dir
for (dirPath= strtok(dirList, ":"); dirPath && *dirPath; dirPath=strtok(NULL,":")) {
ScanDir (dirPath);
}
free (dirList);
return (responseJ);
}
PUBLIC const char *GetMidleName(const char*name) {
char *fullname = strdup(name);
for (int idx = 0; fullname[idx] != '\0'; idx++) {
if (fullname[idx] == '-') {
int start;
start = idx + 1;
for (int jdx = start; ; jdx++) {
if (fullname[jdx] == '-' || fullname[jdx] == '.' || fullname[jdx] == '\0') {
fullname[jdx] = '\0';
return &fullname[start];
break;
}
}
break;
}
}
return "";
}
PUBLIC const char *GetBinderName() {
static char *binderName=NULL;
if (binderName) return binderName;
binderName= getenv("AFB_BINDER_NAME");
if (!binderName) {
char psName[17];
// retrieve binder name from process name afb-name-trailer
prctl(PR_GET_NAME, psName,NULL,NULL,NULL);
binderName=(char*)GetMidleName(psName);
}
return binderName;
}
PUBLIC const char *GetBindingDirPath(BindingDirsT dir)
{
// A file description should not be greater than 999.999.999
char fd[10];
static char retdir[CONTROL_MAXPATH_LEN];
sprintf(fd, "%d", afb_daemon_rootdir_get_fd());
char* fd_link = malloc(strlen("/proc/self/fd/") + strlen(fd));
strcpy(fd_link, "/proc/self/fd/");
strcat(fd_link, fd);
ssize_t len;
if((len = readlink(fd_link, retdir, sizeof(retdir)-1)) == -1)
{
perror("lstat");
AFB_ERROR("Error reading stat of link: %s", fd_link);
strcpy(retdir, "/tmp");
}
else
{
retdir[len] = '\0';
switch (dir) {
case BIN_DIR:
strcat(retdir, "/bin");
break;
case ETC_DIR:
strcat(retdir, "/etc");
break;
case LIB_DIR:
strcat(retdir, "/lib");
break;
case DATA_DIR:
strcat(retdir, "/data");
break;
case HTTP_DIR:
strcat(retdir, "/http");
break;
}
}
free(fd_link);
return retdir;
}
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