void write_array_2d(const array_2d <T, K>& a, std::ostream& s)
{
size_t arr = a.columns(); // number of arrays
write_size(arr, s);
size_t dim = a.rows(); // dimension of each array
for (size_t n = 0, p = 0; n < arr; n++, p += dim) {
write_size(dim, s);
write(a[p], s, dim);
}
}
int write_instructions(int fd, int fdwrite)
{
char *tmp;
int size;
int i;
char *ins;
char *param;
t_asm *my_asm;
i = 2;
my_asm = NULL;
while ((tmp = get_next_line(fd)))
{
i++;
if (tmp != NULL && tmp[0] != '.' && all_space(tmp) != 0)
{
tmp = remove_space(tmp);
ins = parse_action(tmp, 0);
param = parse_action(tmp, 1);
ins = remove_all_space(ins);
param = remove_all_space(param);
if (check_arg(ins) != 1 ||
check_param(ins, param) != 1)
return (error_line(i));
my_asm = add_action(my_asm, ins, param);
}
}
my_asm = my_asm->next;
if ((size = instructions_file(fdwrite, my_asm)) == -1
|| write_size(fdwrite, size) == -1)
return (-1);
return (0);
}
void
forward_to_remote(struct remote_context *remote, uint8_t *buf, int buflen) {
buf -= HEADER_BYTES;
write_size(buf, buflen);
buflen += HEADER_BYTES;
uv_buf_t data = uv_buf_init((char*)buf, buflen);
remote->write_req.data = remote;
uv_write(&remote->write_req, &remote->handle.stream, &data, 1, remote_send_cb);
}
static void
deal_mem(char *pdata, size_t size)
{
assert(pdata != NULL);
int i, line_size = 0;
for(i = size - 1; i >= 0; --i)
{
++line_size;
if(pdata[i] == SEP_CHAR) /*找到一个分隔符*/
{
write_size((void *)(pdata+i), line_size, STDOUT_FILENO); /*写这一行数据*/
line_size = 0;
}
}
if(line_size != 0) /*开始处(除开第一个字节)的数据*/
{
write_size("\n", 1, STDOUT_FILENO);/*先写个换行符*/
write_size((void *)pdata, line_size, STDOUT_FILENO);
}
write_size("\n", 1, STDOUT_FILENO);
}
void
forward_to_source(struct source_context *source, uint8_t *buf, int buflen) {
uv_read_stop(&source->target->handle.stream);
source->write_req.data = source;
if (mode == TUNNEL_MODE_CLIENT) {
uv_buf_t data = uv_buf_init((char*)buf, buflen);
uv_write(&source->write_req, &source->handle.stream, &data, 1, source_send_cb);
} else {
buf -= HEADER_BYTES;
write_size(buf, buflen);
buflen += HEADER_BYTES;
uv_buf_t data = uv_buf_init((char*)buf, buflen);
uv_write(&source->write_req, &source->handle.stream, &data, 1, source_send_cb);
}
}
void *set_ptr(t_info info, void *mem)
{
void *ptr;
ptr = write_size(info.size, mem);
ptr = write_block_count(info.block_count, ptr);
if (info.type > 3)
{
if (info.type == SMALL_N)
info.type = SMALL;
else if (info.type == TINY_N)
info.type = TINY;
else
info.type = LARGE;
}
ptr = write_mem_pos(info.mem_pos, info.type, ptr);
return (ptr);
}
void
tun_to_tcp(uint8_t *buf, int len, uv_stream_t *stream) {
uint8_t *hdr = malloc(HEADER_BYTES);
write_size(hdr, len);
uv_write_t *req = malloc(sizeof(*req) + sizeof(uv_buf_t) * 2);
uv_buf_t *outbuf1 = (uv_buf_t *) (req + 1);
uv_buf_t *outbuf2 = outbuf1 + 1;
*outbuf1 = uv_buf_init((char *) hdr, HEADER_BYTES);
*outbuf2 = uv_buf_init((char *) buf, len);
uv_buf_t bufs[2] = {
*outbuf1,
*outbuf2,
};
int rc = uv_write(req, stream, bufs, 2, send_cb);
if (rc) {
logger_log(LOG_ERR, "TCP Write error: %s", uv_strerror(rc));
free(buf);
}
}
int write_entries(const int fd, struct tar_t ** archive, struct tar_t ** head, const size_t filecount, const char * files[], int * offset, const char verbosity){
if (fd < 0){
return -1;
}
if (!archive || *archive){
return -1;
}
if (filecount && !files){
return -1;
}
// add new data
struct tar_t ** tar = archive; // current entry
char buf[512]; // one block buffer
for(unsigned int i = 0; i < filecount; i++){
*tar = malloc(sizeof(struct tar_t));
// stat file
if (format_tar_data(*tar, files[i], verbosity) < 0){
WRITE_ERROR(stderr, "Error: Failed to stat %s\n", files[i]);
}
if (!i){
*archive = *tar; // store first address
}
(*tar) -> begin = *offset;
// write different data depending on file type
if ((*tar) -> type == DIRECTORY){
// save parent directory name (source will change)
const size_t len = strlen((*tar) -> name);
char * parent = calloc(len + 1, sizeof(char));
strncpy(parent, (*tar) -> name, len);
// add a '/' character to the end
if ((len < 99) && ((*tar) -> name[len - 1] != '/')){
(*tar) -> name[len] = '/';
(*tar) -> name[len + 1] = '\0';
calculate_checksum((*tar));
}
V_PRINT(stdout, "%s\n", (*tar) -> name);
// write metadata to (*tar) file
if (write_size(fd, (*tar) -> block, 512) != 512){
WRITE_ERROR(stderr, "Error: Failed to write metadata to archive\n");
}
// go through directory
DIR * d = opendir(parent);
if (!d){
WRITE_ERROR(stderr, "Error: Cannot read directory %s\n", parent);
}
struct dirent * dir;
while ((dir = readdir(d))){
// if not special directories . and ..
const size_t sublen = strlen(dir -> d_name);
if (strncmp(dir -> d_name, ".", sublen) && strncmp(dir -> d_name, "..", sublen)){
char * path = calloc(len + sublen + 2, sizeof(char));
sprintf(path, "%s/%s", parent, dir -> d_name);
// recursively write each subdirectory
if (write_entries(fd, &((*tar) -> next), head, 1, (const char **) &path, offset, verbosity) < 0){
WRITE_ERROR(stderr, "Error: Recurse error\n");
}
// go to end of new data
while ((*tar) -> next){
tar = &((*tar) -> next);
}
free(path);
}
}
free(parent);
closedir(d);
}
else{ // if (((*tar) -> type == REGULAR) || ((*tar) -> type == NORMAL) || ((*tar) -> type == CONTIGUOUS) || ((*tar) -> type == SYMLINK) || ((*tar) -> type == CHAR) || ((*tar) -> type == BLOCK) || ((*tar) -> type == FIFO)){
V_PRINT(stdout, "%s\n", (*tar) -> name);
char tarred = 0; // whether or not the file has already been put into the archive
if (((*tar) -> type == REGULAR) || ((*tar) -> type == NORMAL) || ((*tar) -> type == CONTIGUOUS) || ((*tar) -> type == SYMLINK)){
struct tar_t * found = exists(*head, files[i], 1);
tarred = (found != (*tar));
// if file has already been included, modify the header
if (tarred){
// change type to hard link
(*tar) -> type = HARDLINK;
// change link name to (*tar)red file name (both are the same)
strncpy((*tar) -> link_name, (*tar) -> name, 100);
// change size to 0
strncpy((*tar) -> size, "00000000000", 11);
// recalculate checksum
calculate_checksum((*tar));
}
}
// write metadata to (*tar) file
if (write_size(fd, (*tar) -> block, 512) != 512){
WRITE_ERROR(stderr, "Error: Failed to write metadata to archive\n");
}
if (((*tar) -> type == REGULAR) || ((*tar) -> type == NORMAL) || ((*tar) -> type == CONTIGUOUS)){
// if the file isn't already in the tar file, copy the contents in
if (!tarred){
int f = open((*tar) -> name, O_RDONLY);
if (f < 0){
WRITE_ERROR(stderr, "Error: Could not open %s\n", files[i]);
}
int r = 0;
while ((r = read_size(f, buf, 512)) > 0){
if (write_size(fd, buf, r) != r){
RC_ERROR(stderr, "Error: Could not write to archive: %s\n", strerror(rc));
}
}
close(f);
}
}
// pad data to fill block
const unsigned int size = oct2uint((*tar) -> size, 11);
const unsigned int pad = 512 - size % 512;
if (pad != 512){
for(unsigned int j = 0; j < pad; j++){
if (write_size(fd, "\0", 1) != 1){
WRITE_ERROR(stderr, "Error: Could not write padding data\n");
}
}
*offset += pad;
}
*offset += size;
tar = &((*tar) -> next);
}
// add metadata size
*offset += 512;
}
return 0;
}
int tar_remove(const int fd, struct tar_t ** archive, const size_t filecount, const char * files[], const char verbosity){
if (fd < 0){
return -1;
}
// archive has to exist
if (!archive || !*archive){
return -1;
}
if (filecount && !files){
return -1;
}
if (!filecount){
return 0;
}
// get file permissions
struct stat st;
if (fstat(fd, &st)){
RC_ERROR(stderr, "Error: Unable to stat archive: %s\n", strerror(rc));
}
// reset offset of original file
if (lseek(fd, 0, SEEK_SET) == (off_t) (-1)){
RC_ERROR(stderr, "Error: Unable to seek file: %s\n", strerror(rc));
}
// find first file to be removed that does not exist
int ret = 0;
char * bad = calloc(filecount, sizeof(char));
for(int i = 0; i < filecount; i++){
if (!exists(*archive, files[i], 0)){
V_PRINT(stderr, "Error: %s not found in archive\n", files[i]);
bad[i] = 1;
ret = -1;
}
}
unsigned int read_offset = 0;
unsigned int write_offset = 0;
struct tar_t * prev = NULL;
struct tar_t * curr = *archive;
while(curr){
// get original size
int total = 512;
if ((curr -> type == REGULAR) || (curr -> type == NORMAL) || (curr -> type == CONTIGUOUS)){
total += oct2uint(curr -> size, 11);
if (total % 512){
total += 512 - (total % 512);
}
}
const int match = check_match(curr, filecount, bad, files);
if (match < 0){
V_PRINT(stderr, "Error: Match failed\n");
return -1;
}
else if (!match){
// if the old data is not in the right place, move it
if (write_offset < read_offset){
int got = 0;
while (got < total){
// go to old data
if (lseek(fd, read_offset, SEEK_SET) == (off_t) (-1)){
RC_ERROR(stderr, "Error: Cannot seek: %s\n", strerror(rc));
}
char buf[512];
// copy chunk out
if (read_size(fd, buf, 512) != 512){// guarenteed 512 octets
V_PRINT(stderr, "Error: Read error\n");
return -1;
}
// go to new position
if (lseek(fd, write_offset, SEEK_SET) == (off_t) (-1)){
RC_ERROR(stderr, "Error: Cannot seek: %s\n", strerror(rc));
}
// write data in
if (write_size(fd, buf, 512) != 512){
V_PRINT(stderr, "Error: Write error\n");
return -1;
}
// increment offsets
got += 512;
read_offset += 512;
write_offset += 512;
}
}
else{
read_offset += total;
write_offset += total;
// skip past data
if (lseek(fd, read_offset, SEEK_SET) == (off_t) (-1)){
RC_ERROR(stderr, "Error: Cannot seek: %s\n", strerror(rc));
}
}
prev = curr;
curr = curr -> next;
}
else{// if name matches, skip the data
struct tar_t * tmp = curr;
if (!prev){
*archive = curr -> next;
if (*archive){
(*archive) -> begin = 0;
}
}
else{
prev -> next = curr -> next;
if (prev -> next){
prev -> next -> begin = curr -> begin;
}
}
curr = curr -> next;
free(tmp);
// next read starts after current entry
read_offset += total;
}
}
// resize file
if (ftruncate(fd, write_offset) < 0){
RC_ERROR(stderr, "Error: Could not truncate file: %s\n", strerror(rc));
}
// add end data
if (write_end_data(fd, write_offset, verbosity) < 0){
V_PRINT(stderr, "Error: Could not close file\n");
}
return ret;
}
void write_array(const CONT_EX <CONT_IN<T, K>, D>& a, std::ostream& s)
{
write_size(a.size(), s);
for (size_t n = 0; n < a.size(); n++)
write_array(a[n], s);
}
void write_array(const CONT<T, K>& a, std::ostream& s)
{
write_size(a.size(), s);
write(a, s);
}
