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/**
* Copyright (C) 2007 International Business Machines
* Author(s): Michael Halcrow <mhalcrow@us.ibm.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <string.h>
#include <errno.h>
#include "config.h"
#include "ecryptfs.h"
#include "io.h"
/**
* TODO: Use decision graph here
*/
int ecryptfs_generate_key(void)
{
return -EINVAL;
/* struct ecryptfs_ctx ctx;
struct ecryptfs_key_mod *key_mod = NULL;
char *home;
char *directory;
char *file;
uid_t id;
struct passwd *pw;
int rc = 0;
id = getuid();
pw = getpwuid(id);
home = pw->pw_dir;
printf("\n");
printf("This is the eCryptfs key generation utility. At any time \n"
"you may hit enter to selected a default option appearing in \n"
"brackets.\n");
printf("\n");
if ((rc = ecryptfs_get_key_mod_list(&ctx))) {
fprintf(stderr, "Error: eCryptfs was unable to initialize the "
"PKI modules.\n");
return 0;
}
if (ecryptfs_select_key_mod(&key_mod, &ctx)) {
fprintf(stderr, "Error: Problem loading the selected PKI.\n");
return 0;
}
file = malloc(MAX_PATH_SIZE);
if (!file) {
fprintf(stderr, "Out of memory\n");
return 0;
}
printf("\nEnter the filename where the key should be written.\n"
"[%s%s%s/key.pem]:", home, "/.ecryptfs/pki/",
key_mod->alias);
get_string(file, MAX_PATH_SIZE, ECHO);
if (*file == '\0')
memcpy(file, "key.pem", 8);
if (*file == '/') {
rc = key_mod->ops->generate_key(file);
if (rc) {
fprintf(stderr, "Error: unable to write key to file\n");
return 0;
}
} else {
rc = create_default_dir(home, selected_pki);
if (rc) {
fprintf(stderr, "Error: unable to create default pki directory\n");
goto out;
}
rc = create_subdirectory(file, home, selected_pki);
if (rc) {
fprintf(stderr, "Error: unable to create the desired subdirectories\n");
goto out;
}
rc = asprintf(&directory, "%s/.ecryptfs/pki/%s/%s", home,
selected_pki->pki_name, file);
if (rc == -1) {
fprintf(stderr, "Out of memory\n");
rc = 0;
goto out;
}
rc = selected_pki->ops.generate_key(directory);
if (rc)
fprintf(stderr, "Error: unable to write key to file\n");
}
out:
return rc; */
}
int
create_subdirectory(char *file, char *home, struct ecryptfs_key_mod *key_mod)
{
char *substring;
char *directory;
int rc = 0;
substring = file;
while((substring = strstr(substring, "/")) != NULL) {
char temp = *(substring + 1);
*(substring + 1) = '\0';
if (asprintf(&directory, "%s/.ecryptfs/pki/%s/%s",
home, key_mod->alias, file) < 0) {
rc = errno;
fprintf(stderr, "Error: %s", strerror(errno));
goto out;
}
printf("%s\n",directory);
if (mkdir(directory,0700) != 0 && errno != EEXIST) {
rc = errno;
fprintf(stderr, "Error: %s\n", strerror(errno));
goto out;
}
free(directory);
*(substring + 1) = temp;
substring = substring + 1;
}
out:
return rc;
}
int create_default_dir(char *home, struct ecryptfs_key_mod *key_mod)
{
char *directory;
int rc = 0;
if (asprintf(&directory, "%s/.ecryptfs/", home) < 0) {
rc = errno;
fprintf(stderr, "Error: %s", strerror(errno));
goto out;
}
if (mkdir(directory,0700) != 0 && errno != EEXIST) {
rc = errno;
fprintf(stderr, "Error: %s", strerror(errno));
goto out;
}
free(directory);
if (asprintf(&directory, "%s/.ecryptfs/pki/", home) < 0) {
rc = errno;
fprintf(stderr, "Error: %s", strerror(errno));
goto out;
}
if (mkdir(directory,0700) != 0 && errno != EEXIST) {
rc = errno;
fprintf(stderr, "Error: %s", strerror(errno));
goto out;
}
free(directory);
if (asprintf(&directory, "%s/.ecryptfs/pki/%s/", home,
key_mod->alias) < 0) {
rc = errno;
fprintf(stderr, "Error: %s", strerror(errno));
goto out;
}
if (mkdir(directory,0700) != 0 && errno != EEXIST) {
rc = errno;
fprintf(stderr, "Error: %s", strerror(errno));
goto out;
}
free(directory);
out:
return rc;
}
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