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#include "tar.h"
int archive_write(char *archive_file_name, char **files)
{
int fd;
char file_name[PATH_MAX];
struct stat root_statbuf;
if (archive_file_name == NULL)
fd = STDOUT_FILENO;
else
{
fd = open(archive_file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1)
{
perror("achive_write");
return -1;
}
}
for (; *files != NULL; files++)
{
bzero(file_name, PATH_MAX);
strcpy(file_name, *files);
file_write(fd, file_name);
}
if (stat("/", &root_statbuf) == -1)
{
perror("achive_write");
close(fd);
return -1;
}
if (record_write_blank(fd, 2 + (2 * root_statbuf.st_blksize) / RECORD_SIZE) == -1)
{
close(fd);
return -1;
}
if (fd != STDOUT_FILENO)
close(fd);
return 0;
}
int archive_read(char *archive_file_name)
{
int archive_fd;
if (archive_file_name == NULL)
archive_fd = STDIN_FILENO;
else
{
if ((archive_fd = open(archive_file_name, O_RDONLY)) == -1)
{
perror("achive_write");
return -1;
}
}
char record[RECORD_SIZE];
t_header header;
int fd;
struct stat statbuf;
while (true)
{
if (record_read(archive_fd, record) == -1)
return -1;
if (record_is_blank(record))
{
if (record_read(archive_fd, record) == -1)
return -1;
if (record_is_blank(record))
break;
else
return -1;
}
if (header_parse(record, &statbuf, &header) == -1)
return -1;
switch (header.file_type[0])
{
case '5':
if (mkdir(header.file_name, statbuf.st_mode) == -1)
{
close(archive_fd);
perror(NULL);
return -1;
}
break;
case '0':
fd = open(header.file_name, O_WRONLY | O_CREAT | O_TRUNC, statbuf.st_mode);
if (fd == -1)
{
perror(NULL);
return -1;
}
char *content = malloc(statbuf.st_size);
if (content == NULL ||
read(archive_fd, content, statbuf.st_size) == -1 ||
lseek(archive_fd, RECORD_SIZE - statbuf.st_size % RECORD_SIZE, SEEK_CUR) == -1 ||
write(fd, content, statbuf.st_size) == -1)
{
perror(NULL);
return -1;
}
break;
default:
return -1;
}
}
close(archive_fd);
return 0;
}
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