int fs_mkdir(const char *pth, mode_t mode)
{
printf("%s: %s\n", __func__, pth);
char *path = (char*)malloc(strlen(pth)+1);
strncpy(path, pth, strlen(pth)+1);
int i;
int slash;
node_t* parent;
char* file_name;
for (i = 0; i < strlen(path); ++i)
if (path[i] == '/')
slash = i;
file_name = path + slash + 1;
if (slash == 0)
{
parent = find_node_by_name("/");
parent->size = -2;
} else {
path[slash] = '\0';
parent = find_node_by_name(path);
}
if ( (2 + parent->size) != 0)
return -ENOENT;
int node_offset = get_new_node_offset();
if (node_offset == -1)
return EFAULT;
memcpy(nodes + node_offset, file_name, 6);
*((int16_t*) (nodes + node_offset + 6)) = (int16_t) -2;
memset(nodes + node_offset + 8, 0, 26);
int sector = fs_get_free_sector();
if (sector == -1)
return -ENOSPC;
map[sector] = 0xFF;
nodes[node_offset + 8] = sector;
char empty_sector[SECTOR_SIZE];
memset(empty_sector, 0, sector);
device_flush();
fs_update_nodes();
fs_update_map();
if ( -1 == write_node_info_to_parent_sector
(file_name, parent->sectors[0], node_offset / 32))
return EFAULT;
return 0;
}
int fs_readdir(const char *path, void *buf, fuse_fill_dir_t filler, off_t offset, struct fuse_file_info *fileInfo)
{
printf("%s: %s\n", __func__, path);
node_t* n = find_node_by_name(path);
if (n->size == -1)
{
puts("Error while readdir");
return -ENOENT;
} else {
if (n->size == -2)
{
filler(buf, ".", NULL, 0);
filler(buf, "..", NULL, 0);
file_info_t* fi = get_file_info_by_node(n);
int name_index = 0;
char name[MAX_NAME_LEN+1] = {0};
while (fi->f_data[name_index] != 0 && name_index < SECTOR_SIZE)
{
memcpy (name, &(fi->f_data[name_index]), 6);
filler(buf, name, NULL, 0);
name_index += 8;
}
return 0;
}
return -ENOENT;
}
}
int fs_rmdir(const char *path)
{
printf("%s: %s\n", __func__, path);
node_t* node = find_node_by_name(path);
file_info_t* dir_info = get_file_info_by_node(node);
if ( dir_info->f_data[0] != 0)
return -ENOTEMPTY;
int i;
for (i = 0; node->sectors[i] != 0; i++)
map[ node->sectors[i] ] = 0x00;
node_t* parent_node = find_parent_node(path);
file_info_t* parent_fi = get_file_info_by_node(parent_node);
unsigned char* par_data = parent_fi->f_data;
for (i = 0; i < SECTOR_SIZE; i++)
if (strncmp( (char*)(par_data + i), node->name, 6) == 0)
break;
for ( i += 8; i < SECTOR_SIZE; i++)
par_data[ i - 8 ] = par_data[i];
fs_update_nodes();
fs_update_map();
device_write_sector(par_data, parent_node->sectors[0]);
device_flush();
return 0;
}
node_t* find_parent_node(const char* pth)
{
printf("%s: %s\n", __func__, pth);
char *path = (char*)malloc(strlen(pth)+1);
strncpy(path, pth, strlen(pth)+1);
int i;
int slash;
for (i = 0; i < strlen(path); ++i)
if (path[i] == '/')
slash = i;
if (slash == 0)
return find_node_by_name("/");
path[slash] = '\0';
return find_node_by_name(path);
}
int fs_open(const char *path, struct fuse_file_info *fileInfo)
{
printf("%s: %s\n", __func__, path);
node_t *node = find_node_by_name(path);
file_info_t* fi = get_file_info_by_node(node);
fileInfo->fh = (uint64_t)fi;
return 0;
}
int fs_opendir(const char *path, struct fuse_file_info *fileInfo)
{
printf("%s: %s\n", __func__, path);
node_t* n = find_node_by_name(path);
if (n->size == -1)
return -ENOENT;
if (n->size != -2)
return -ENOENT;
return 0;
}
int fs_mknod(const char *pth, mode_t mode, dev_t dev)
{
printf("%s: %s\n", __func__, pth);
if( S_ISREG(mode) == 0 )
return -EPERM;
char *path = (char*)malloc(strlen(pth)+1);
strncpy(path, pth, strlen(pth)+1);
int i;
int slash;
node_t* parent;
char* file_name;
for (i = 0; i < strlen(path); ++i)
if (path[i] == '/')
slash = i;
if (slash == 0)
{
parent = find_node_by_name("/");
parent->size = -2;
} else {
path[slash] = '\0';
parent = find_node_by_name(path);
}
if (parent->size != -2)
return -ENOENT;
file_name = path + slash + 1;
int node_offset = get_new_node_offset();
if (node_offset == -1)
return EFAULT;
memcpy(nodes + node_offset, file_name, 6);
memset(nodes + node_offset + 6, 0, 26);
fs_update_nodes();
if ( -1 == write_node_info_to_parent_sector
(file_name, parent->sectors[0], node_offset / 32))
return EFAULT;
return 0;
}
int port_remove_listener(const char *owner, const char *dev)
{
struct rfcomm_node *node;
node = find_node_by_name(connected_nodes, dev);
if (!node)
return -ENOENT;
if (strcmp(node->owner, owner) != 0)
return -EPERM;
g_dbus_remove_watch(node->conn, node->listener_id);
connected_nodes = g_slist_remove(connected_nodes, node);
rfcomm_node_free(node);
return 0;
}
int port_unregister(const char *path)
{
struct rfcomm_node *node;
char dev[16];
int16_t id;
if (sscanf(path, SERIAL_MANAGER_PATH"/rfcomm%hd", &id) != 1)
return -ENOENT;
snprintf(dev, sizeof(dev), "/dev/rfcomm%hd", id);
node = find_node_by_name(bound_nodes, dev);
if (!node)
return -ENOENT;
g_dbus_unregister_interface(node->conn, path, SERIAL_PORT_INTERFACE);
return 0;
}
int fs_truncate(const char *pth, off_t new_size)
{
printf("%s: %s\n", __func__, pth);
char *path = (char*)malloc(strlen(pth)+1);
strncpy(path, pth, strlen(pth)+1);
node_t* node = find_node_by_name(path);
if (new_size <= node->size)
return -EFBIG;
int sectors_count = fs_sectors_count(new_size);
int i, slash;
for ( i = sectors_count; node->sectors[i] != 0; i++)
{
map[ node->sectors[i] ] = 0x00;
node->sectors[i] = 0;
}
node->size = new_size;
file_info_t* parent_fi = get_file_info_by_node(find_parent_node(path));
char* file_name;
for (i = 0; i < strlen(path); ++i)
if (path[i] == '/')
slash = i;
file_name = path + slash + 1;
for (int i = 0; i < SECTOR_SIZE; i += 8)
if (strncpy( (char*)&(parent_fi->f_data[i]), file_name, 6) == 0)
break;
int node_number = parent_fi->f_data[i + 7];
*((int16_t*)(&(nodes[ 32*node_number + 6 ]))) = (int16_t) new_size;
memcpy( &(nodes[32*node_number + 8]), node->sectors, 24);
fs_update_nodes();
fs_update_map();
return 0;
}
int fs_getattr(const char *path, struct stat *statbuf)
{
printf("%s: %s\n", __func__, path);
int path_len = strlen(path);
statbuf->st_uid = 0;
statbuf->st_gid = 0;
if ( (path_len == 1) && path[0] == '/') {
statbuf->st_mode = S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO;
statbuf->st_nlink = 1;
statbuf->st_ino = 0;
statbuf->st_size = SECTOR_SIZE;
statbuf->st_blksize = SECTOR_SIZE;
statbuf->st_blocks = 1;
return 0;
}
node_t* n = find_node_by_name(path);
puts("OK");
statbuf->st_blksize = SECTOR_SIZE;
if (n->size == -1)
{
puts("file not found");
return -ENOENT;
} else {
if (n->size == -2) // if dir
{
statbuf->st_mode = S_IFDIR | 0777;
statbuf->st_nlink = 3;
return 0;
} else {
statbuf->st_mode = S_IFREG | 0666;
statbuf->st_nlink = 1;
statbuf->st_size = n->size;
return 0;
}
}
}
void main_loop(pDataStruct workingData){
char *commandList[] = {"set", "get", "add", "delete","exit","help","ls","cat","cd"};
char *setList[] = {"date", "user", "group","help"};
char *getList[] = {"date", "user", "group", "workingDir","help", "userlist", "grouplist", "usersingroup"};
char *addList[] = {"user", "group", "file", "directory", "usertogroup","perm", "appendfile","help"};
char *deleteList[] = {"user", "group", "file", "directory", "usertogroup","perm", "filebytes","help"};
char arg[16][MAXCOMMAND];
char command[MAXCOMMAND];
int argnum, i, j, tempNum, cmd, size;
char *c;
char temp[MAXPATH];
char *tempBuf;
unsigned char *rcvBuf;
pNode tempNode = NULL;
pUser tempUser = NULL;
pGroup tempGroup = NULL;
pFile tempFile = NULL;
pPerms tempPerms = NULL;
pFileChunk tempFileChunk = NULL;
pGroupUserList tempGroupUserList = NULL;
while(1){
argnum = i = j = tempNum = cmd = 0;
c = 0;
bzero(temp, sizeof(temp));
tempBuf = NULL;
tempNode = NULL;
tempUser = NULL;
tempGroup = NULL;
tempFile = NULL;
tempPerms = NULL;
tempFileChunk = NULL;
tempGroupUserList = NULL;
bzero(command, sizeof(command));
print_prompt(workingData);
get_string(command, MAXCOMMAND-1, "");
for (j = 0;j<16;j++){
bzero(arg[j],MAXCOMMAND);
}
argnum = parse_arg(arg, command);
tempNum = 0;
cmd = 100;
for (i=0;i<sizeof(commandList)/4;i++){
if (strcmp(commandList[i],arg[0]) == 0 ){
cmd = i;
}
}
switch(cmd)
{
case 0x0 : //set
cmd = 100;
for (i=0;i<sizeof(setList)/4;i++){
if (strcmp(setList[i],arg[1]) == 0){
cmd = i;
}
}
switch(cmd)
{
case 0 : //set date
workingData->date = get_time();
break;//end set date
case 1 : //set user
if ( strcmp(arg[2],"") == 0){
puts("missing user name or number");
break;
}
tempUser = find_user(arg[2],workingData);
if ( tempUser != NULL ){
workingData->currentUser = tempUser;
} else {
printf("unknown user: @s\n",arg[2]);
}
break;//end set user
case 2 : //set group
if ( strcmp(arg[2], "") == 0){
puts("missing group name or number");
break;
}
tempGroup = find_group(arg[2], workingData);
if ( tempGroup != NULL){
workingData->currentGroup = tempGroup;
} else {
printf("unknown group: @s\n",arg[2]);
}
break;
case 3 : //set help
print_help(setList,(sizeof(setList)/4));
break;//end set help
default :
printf("Invalid command: @s\n",arg[1]);
}
break;//end set
case 1 ://get
cmd = 100;
for (i=0;i<sizeof(getList)/4;i++){
if (strcmp(getList[i],arg[1]) == 0){
cmd = i;
}
}
switch(cmd)
{
case 0 : //get date
strofdate( workingData->date);
break;//end get date
case 1 : //get user
printf("@s\n",workingData->currentUser->name);
break;//end get user
case 2 : //get group
printf("@s\n",workingData->currentGroup->name);
break;//end get group
case 3 : //get workingDir
bzero(temp,MAXPATH);
str_of_path( temp, workingData, workingData->workingDir);
printf("@s/\n",temp);
break;//end get workingDir
case 4 : //get help
print_help(getList,(sizeof(getList)/4));
break;//end get help
case 5 : //get userlist
print_user_list(workingData);
break;//end get userlist
case 6 : //get grouplist
print_group_list(workingData);
break;//end get grouplist
case 7 : //get usersingroup
if ( strcmp(arg[2], "") == 0){
puts("missing group name or number");
break;
}
tempGroup = find_group(arg[2], workingData);
if ( tempGroup != NULL ){
print_users_in_group(tempGroup);
break;
}
printf("unknown group: @s\n",arg[2]);
break;//end get useringroup
default :
printf("Invalid command: @s\n",arg[1]);
}
break;//end get
case 2 ://add
cmd = 100;
for (i=0;i<sizeof(addList)/4;i++){
if ( strcmp(addList[i],arg[1]) == 0 ){
cmd = i;
}
}
switch(cmd)
{
case 0 : //add user
if ( strcmp(arg[2],"") == 0 ){
bzero(temp,MAXPATH);
get_string(temp, 128, "UserName");
strcpy(arg[2],temp);
}
tempUser = find_user( arg[2], workingData);
if ( tempUser == NULL ){
add_user( arg[2], workingData );
} else {
puts("Username already in use");
}
break;//end add user
case 1 : //add group
if ( strcmp(arg[2],"") == 0 ){
bzero(temp,MAXPATH);
get_string(temp, 128, "GroupName");
strcpy(arg[2], temp);
}
tempGroup = find_group( arg[2], workingData);
if ( tempGroup == NULL ){
add_group( arg[2], workingData );
} else {
puts("Groupname already in use");
}
break;//end add group
case 2 : //add file
//add file name size
tempNum = atoi(arg[3]);
if (strcmp(arg[2],"") == 0){
puts("Filename required");
break;
}
if ( tempNum > MAXUPLOAD ){
puts("Too big");
break;
}
if ( find_node_by_name(arg[2],workingData->workingDir->directoryHeadNode) != NULL ){
puts("There is another file or directory with that name");
break;
}
if ( tempNum > 0){
rcvBuf = mallocOrDie(tempNum,"Failed to allocate tempBuf");
puts("-----Begin File-----");//five -
if ( tempNum != receive_bytes(rcvBuf,tempNum) ){
die("Failed to reveive file");
break;
}
} else {rcvBuf = NULL;}
tempNode = add_file( workingData->workingDir, workingData->date, tempNum, arg[2], (char *)rcvBuf, workingData->currentUser );
break;//end add file
case 3 : //add directory
if (strcmp(arg[2],"") == 0){
puts("Directory name required");
break;
}
if ( find_node_by_name(arg[2],workingData->workingDir->directoryHeadNode) != NULL ){
puts("There is another file or directory with that name");
break;
}
tempNode = add_directory( workingData->date, arg[2], workingData->workingDir, workingData->currentUser );
break;//end add directory
case 4 : //add useringroup
if (strcmp(arg[2],"") == 0){
puts("username or number required");
break;
}
tempUser = find_user( arg[2], workingData);
if ( tempUser != NULL ){//user exists
tempGroupUserList = is_user_in_group( tempUser, workingData->currentGroup );
if ( tempGroupUserList == NULL ){//user is not already in group
add_user_to_group( tempUser, workingData->currentGroup );
} else {printf("@s is already in @s\n",arg[2], workingData->currentGroup->name);}
} else {
puts("User does not exist, add user first");
}
break;//end add useringroup
case 5 : //add perm
if ( ( strcmp(arg[2],"") == 0 )||( strcmp(arg[2]," ") == 0 ) ){//arg[2] name of file or dir
puts("name of file or directory required");
break;
}
if (!( (strcmp(arg[3],"user") == 0) ^ (strcmp(arg[3],"group") == 0) )) {//arg[3] user, group
puts("'user' or 'group'");
break;
}
if (strcmp(arg[4],"") == 0){
puts("user name, group name, or number required");//arg[4] name or number of user or group
break;
}
tempNode = find_node_by_name(arg[2],workingData->workingDir->directoryHeadNode );//validate file or dir
if (tempNode == NULL){
puts("Invalid file or directory");
break;
}
if (tempNode->type == LINK){
tempNode = tempNode->directoryHeadNode;
break;
}
if (strcmp(arg[3],"user") == 0){
tempUser = find_user(arg[4],workingData);
tempGroup = NULL;
if (tempUser == NULL){
printf("user @s not found\n",arg[4]);
break;
}
} else {
tempGroup = find_group(arg[4],workingData);
tempUser = NULL;
if (tempGroup == NULL){
printf("group @s not found\n",arg[4]);
break;
}
}
validate_current_perms(tempNode, workingData);
tempPerms = add_perm(tempUser, tempGroup, tempNode );
break;//end add perm
case 6 : //add appendfile
tempNum = atoi(arg[3]);
if (strcmp(arg[2],"") == 0){
puts("Filename required");
break;
}
if ( tempNum > MAXUPLOAD ){
puts("Too big");
break;
}
tempFile = find_file_by_name(arg[2],workingData->workingDir);
if ( tempFile == NULL ){
puts("No file in working directory by that name");
break;
}
if ( tempNum > 0){
tempBuf = mallocOrDie(tempNum,"Failed to allocate tempBuf");
puts("-----Begin File-----");//five -
if ( tempNum != receive_bytes((unsigned char *)tempBuf,tempNum) ){
die("Failed to reveive file");
break;
}
} else {
tempBuf = NULL;
puts("Can not add 0 bytes to file");
break;
}
tempFileChunk = add_file_chunk( tempBuf, tempFile, tempNum );
break;//end add appendfile
case 7 : //add help
print_help(addList, (sizeof(addList)/4));
break;//end add help
default :
printf("Invalid command: @s\n",arg[1]);
}
break;//end add
case 3 ://delete
cmd = 100;
for (i=0;i<sizeof(deleteList)/4;i++){
if ( strcmp(deleteList[i],arg[1]) == 0 ){
cmd = i;
}
}
switch(cmd)
{
case 0 : //delete user
bzero(temp,MAXPATH);
if ( strcmp(arg[2],"") == 0 ){
get_string(temp, 128, "User Name or number");
strcpy(arg[2],temp);
}
tempUser = find_user( arg[2], workingData);
if ( tempUser != NULL ){
remove_user(tempUser , workingData );
} else {
puts("No such user found");
}
break;//end delete user
case 1 : //delete group
bzero(temp,MAXPATH);
if ( strcmp(arg[2],"") == 0 ){
get_string(temp, 128, "Group Name or number");
strcpy(arg[2],temp);
}
tempGroup = find_group( arg[2], workingData);
if ( tempGroup != NULL ){
remove_group(tempGroup , workingData );
} else {
puts("no such group found");
}
break;//end delete group
case 2 : //delete file
if (strcmp(arg[2],"") == 0){
puts("Filename required");
break;
}
tempNode = find_file_node_by_name(arg[2],workingData->workingDir);
if (tempNode == NULL){
puts("No such file");
break;
}
delete_node(tempNode, workingData);
break;//end delete file
case 3 : //delete directory
if (strcmp(arg[2],"") == 0){
puts("Directory name required");
break;
}
tempNode = find_directory_by_name(arg[2],workingData->workingDir);
if (tempNode == NULL){
puts("No such directory");
break;
}
delete_node(tempNode, workingData);
break;//end delete directory
case 4 : //delete usertogroup
if (strcmp(arg[2],"") == 0){
puts("User name required");
break;
}
if (strcmp(arg[3],"") == 0){
puts("group name required");
break;
}
tempUser = find_user(arg[2],workingData);
if (tempUser == NULL){
puts("No such user");
break;
}
tempGroup = find_group(arg[3],workingData);
if (tempGroup == NULL){
puts("No such group");
break;
}
tempGroupUserList = is_user_in_group(tempUser, tempGroup);
if (tempGroupUserList == NULL){
puts("User is not in group");
break;
}
remove_user_from_group(tempUser, tempGroup);
break;//end delete usertogroup
case 5 : //delete perm
if (strcmp(arg[3],"") == 0){
puts("User or group name required");
break;
}
if (strcmp(arg[2],"") == 0){
puts("file name required");
break;
}
tempNode = find_node_by_name(arg[2],workingData->workingDir->directoryHeadNode);
if (tempNode == NULL){
puts("No such file");
break;
}
tempPerms = find_perm_by_name(arg[3],tempNode,workingData);
if (tempPerms != NULL){
delete_perms(tempNode, tempPerms);
} else {
puts("No such user permission on file");
}
break;//end delete perm
case 6 : //delete filebytes [file] [numbytes]
if (strcmp(arg[2],"") == 0){
puts("Filename required");
break;
}
size = strict_atoi(arg[3]);
if (size == 0){
puts("zero bytes deleted");
break;
}
//validate file
tempNode = find_file_node_by_name(arg[2],workingData->workingDir);
tempFile = tempNode->file;
if (tempNode == NULL){
puts("No such file");
printf("@s\n",arg[2]);
break;
}
tempNum = get_file_size(tempFile);
if (size > tempNum){
puts("Too many bytes");
}
//tempNum is new file size
tempNum = tempNum - size;
delete_file_bytes(tempFile, tempNum);
break;//end delete file
case 7 : //delete help
print_help(deleteList, (sizeof(deleteList)/4));
break;//end delete help
default:
print_help(deleteList, (sizeof(deleteList)/4));
//break;//end delete help
}
break;//end delete
case 4 ://cgc_exit
puts("exiting");
goto cgc_exit;
break;
case 5 ://help
print_help(commandList, (sizeof(commandList)/4));
break;
case 6 ://ls
print_working_dir(workingData);
break;
case 7 ://cat
if (strcmp(arg[1],"") == 0){
puts("Filename required");
break;
}
tempFile = find_file_by_name(arg[1], workingData->workingDir);
if ( tempFile != NULL ){
tempFileChunk = tempFile->head;
puts("-----Begin File-----");//five -
while ( tempFileChunk != NULL ){
if (tempFileChunk->chunkSize != cgc_write(tempFileChunk,tempFileChunk->chunkSize)){
puts("file write failed");
}
/*
c = tempFileChunk->chunk;
for ( i = 0; i < tempFileChunk->chunkSize; i++ ){//putc each byte of every chunk
putc( *c);
c++;
}
*/
tempFileChunk = tempFileChunk->next;
}
puts("-----END File-----");//five -
}
break;
case 8 ://cd
if (strcmp(arg[1],"") == 0){
puts("directory required");
break;
}
if (strcmp(arg[1],"..") == 0){
if (workingData->workingDir->parent != NULL){
workingData->workingDir = workingData->workingDir->parent;
}
break;
}
tempNode = find_directory_by_name(arg[1],workingData->workingDir);
if ( tempNode != NULL ){
workingData->workingDir = tempNode;
break;
}
puts("No such directory in working directory");
break;//end cd
default :
printf("Invalid command @s\n",arg[0]);
print_help(commandList, (sizeof(commandList)/4));
}
}
cgc_exit:
return;
}
