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/*
* (C) 2014-2017 by Christian Hesse <mail@eworm.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
* compile with:
* $ gcc -o ykfde-cpio ykfde-cpio.c -larchive
*/
#include <dirent.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <archive.h>
#include <archive_entry.h>
#include "../config.h"
#include "../version.h"
#define PROGNAME "ykfde-cpio"
const static char optstring[] = "hV";
const static struct option options_long[] = {
/* name has_arg flag val */
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{ 0, 0, 0, 0 }
};
int add_dir(struct archive *archive, const char * path) {
struct stat st;
struct archive_entry *entry;
int8_t rc = EXIT_FAILURE;
/* initialize struct stat for directories from root */
if (stat("/", &st) < 0) {
perror("stat() failed");
goto out;
}
if ((entry = archive_entry_new()) == NULL) {
fprintf(stderr, "archive_entry_new() failed");
goto out;
}
archive_entry_set_pathname(entry, path);
archive_entry_set_filetype(entry, AE_IFDIR);
archive_entry_copy_stat(entry, &st);
if (archive_write_header(archive, entry) != ARCHIVE_OK) {
fprintf(stderr, "archive_write_header() failed");
goto out;
}
archive_entry_free(entry);
rc = EXIT_SUCCESS;
out:
return rc;
}
int main(int argc, char **argv) {
int i;
unsigned int version = 0, help = 0;
char cpiotmpfile[] = CPIOTMPFILE;
struct archive *archive;
struct archive_entry *entry;
struct stat st;
char buff[64];
int len, fdfile, fdarchive;
DIR * dir;
struct dirent * ent;
char * filename, * path;
off_t pathlength = 0;
int8_t rc = EXIT_FAILURE;
/* get command line options */
while ((i = getopt_long(argc, argv, optstring, options_long, NULL)) != -1)
switch (i) {
case 'h':
help++;
break;
case 'V':
version++;
break;
}
if (version > 0)
printf("%s: %s v%s (compiled: " __DATE__ ", " __TIME__ ")\n", argv[0], PROGNAME, VERSION);
if (help > 0)
fprintf(stderr, "usage: %s [-h|--help] [-V|--version]\n", argv[0]);
if (version > 0 || help > 0)
return EXIT_SUCCESS;
if ((fdarchive = mkstemp(cpiotmpfile)) < 0) {
perror("mkstemp() failed");
goto out10;
}
if ((archive = archive_write_new()) == NULL) {
fprintf(stderr, "archive_write_new() failed.\n");
goto out10;
}
if (archive_write_set_format_cpio_newc(archive) != ARCHIVE_OK) {
fprintf(stderr, "archive_write_set_format_cpio_newc() failed.\n");
goto out10;
}
if (archive_write_open_fd(archive, fdarchive) != ARCHIVE_OK) {
fprintf(stderr, "archive_write_open_fd() failed.\n");
goto out10;
}
while (1) {
path = strdup(CHALLENGEDIR + 1);
if (strstr(path + pathlength, "/") == NULL)
break;
*strstr(path + pathlength, "/") = 0;
pathlength = strlen(path) + 1;
if (add_dir(archive, path) < 0) {
fprintf(stderr, "add_dir() failed");
goto out10;
}
free(path);
}
if ((dir = opendir(CHALLENGEDIR)) == NULL) {
perror("opendir() failed");
goto out10;
}
while ((ent = readdir(dir)) != NULL) {
filename = malloc(sizeof(CHALLENGEDIR) + strlen(ent->d_name) + 1);
sprintf(filename, CHALLENGEDIR "%s", ent->d_name);
if (stat(filename, &st) < 0) {
perror("stat() failed");
goto out10;
}
if (S_ISREG(st.st_mode)) {
if ((entry = archive_entry_new()) == NULL) {
fprintf(stderr, "archive_entry_new() failed.\n");
goto out10;
}
/* these do not return exit code */
archive_entry_set_pathname(entry, filename + 1);
archive_entry_set_size(entry, st.st_size);
archive_entry_set_filetype(entry, AE_IFREG);
archive_entry_set_perm(entry, 0644);
if (archive_write_header(archive, entry) != ARCHIVE_OK) {
fprintf(stderr, "archive_write_header() failed");
goto out10;
}
if ((fdfile = open(filename, O_RDONLY)) < 0) {
perror("open() failed");
goto out10;
}
if ((len = read(fdfile, buff, sizeof(buff))) < 0) {
perror("read() failed");
goto out10;
}
while (len > 0) {
if (archive_write_data(archive, buff, len) < 0) {
fprintf(stderr, "archive_write_data() failed");
goto out10;
}
if ((len = read(fdfile, buff, sizeof(buff))) < 0) {
perror("read() failed");
goto out10;
}
}
if (close(fdfile) < 0) {
perror("close() failed");
goto out10;
}
archive_entry_free(entry);
}
free(filename);
}
if (closedir(dir) < 0) {
perror("closedir() failed");
goto out10;
}
if (archive_write_close(archive) != ARCHIVE_OK) {
fprintf(stderr, "archive_write_close() failed");
goto out10;
}
if (archive_write_free(archive) != ARCHIVE_OK) {
fprintf(stderr, "archive_write_free() failed");
goto out10;
}
if (access(CPIOFILE, F_OK) == 0 && unlink(CPIOFILE) < 0) {
perror("unkink() failed");
goto out10;
}
if (rename(cpiotmpfile, CPIOFILE) < 0) {
perror("rename() failed");
goto out10;
}
rc = EXIT_SUCCESS;
out10:
if (access(cpiotmpfile, F_OK) == 0)
unlink(cpiotmpfile);
return rc;
}
// vim: set syntax=c:
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