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/*
* Copyright (C) 2016-2018 "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 <dirent.h>
#include <stdio.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#include "filescan-utils.h"
static int ScanDir(char* searchPath, CtlScanDirModeT mode, size_t extentionLen,
const char* prefix, const char* extention, json_object* responseJ)
{
int found = 0;
DIR* dirHandle;
struct dirent* dirEnt;
dirHandle = opendir(searchPath);
if (!dirHandle) {
AFB_DEBUG("CONFIG-SCANNING dir=%s not readable", searchPath);
return 0;
}
//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);
found += ScanDir(newpath, mode, extentionLen, prefix, extention, responseJ);
continue;
}
// Unknown type is accepted to support dump filesystems
if (dirEnt->d_type == DT_REG || dirEnt->d_type == DT_UNKNOWN) {
// check prefix and extention
ssize_t extentionIdx = strlen(dirEnt->d_name) - extentionLen;
if (extentionIdx <= 0)
continue;
if (prefix && strncasecmp(dirEnt->d_name, prefix, strlen(prefix)))
continue;
if (extention && strcasecmp(extention, &dirEnt->d_name[extentionIdx]))
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);
found++;
}
}
closedir(dirHandle);
return found;
}
// List Avaliable Configuration Files
json_object* ScanForConfig(const char* searchPath, CtlScanDirModeT mode, const char* prefix, const char* extention)
{
json_object* responseJ = json_object_new_array();
char* dirPath;
char* dirList;
size_t extentionLen = 0;
int count = 0;
if (!searchPath)
return responseJ;
dirList = strdup(searchPath);
if (extention)
extentionLen = strlen(extention);
// loop recursively on dir
for (dirPath = strtok(dirList, ":"); dirPath && *dirPath; dirPath = strtok(NULL, ":")) {
count += ScanDir(dirPath, mode, extentionLen, prefix, extention, responseJ);
}
if (count == 0) {
json_object_put(responseJ);
free(dirList);
return NULL;
}
free(dirList);
return (responseJ);
}
const char* GetMiddleName(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;
}
}
return "";
}
const char* GetBinderName()
{
static char* binderName = NULL;
if (binderName)
return binderName;
binderName = getenv("AFB_BINDER_NAME");
if (!binderName) {
static char psName[17];
// retrieve binder name from process name afb-name-trailer
prctl(PR_GET_NAME, psName, NULL, NULL, NULL);
binderName = (char*)GetMiddleName(psName);
}
return binderName;
}
char* GetBindingDirPath(struct afb_dynapi* dynapi)
{
// A file description should not be greater than 999.999.999
char fd_link[CONTROL_MAXPATH_LEN];
char retdir[CONTROL_MAXPATH_LEN];
ssize_t len;
#ifdef USE_API_DYN
if (!dynapi)
return NULL;
sprintf(fd_link, "/proc/self/fd/%d", afb_dynapi_rootdir_get_fd(dynapi));
#else
sprintf(fd_link, "/proc/self/fd/%d", afb_daemon_rootdir_get_fd());
#endif
if ((len = readlink(fd_link, retdir, sizeof(retdir) - 1)) == -1) {
perror("lstat");
strncpy(retdir, "/tmp", CONTROL_MAXPATH_LEN - 1);
} else {
retdir[len] = '\0';
}
return strndup(retdir, sizeof(retdir));
}
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