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-rw-r--r--common/Kconfig28
-rw-r--r--common/Makefile1
-rw-r--r--common/password.c286
3 files changed, 315 insertions, 0 deletions
diff --git a/common/Kconfig b/common/Kconfig
index 6556c62..ad70cde 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -264,6 +264,34 @@ config MENU
a menu framework that allow us to create list menu to simplify
barebox and make it more user-frendly
+config PASSWORD
+ bool
+ prompt "Password Framework"
+ select DIGEST
+ help
+ allow you to have password protection framework
+
+if PASSWORD
+
+choice
+ prompt "passwd checksum"
+
+config PASSWD_SUM_MD5
+ bool "MD5"
+ select MD5
+
+config PASSWD_SUM_SHA1
+ bool "SHA1"
+ select SHA1
+
+config PASSWD_SUM_SHA256
+ bool "SHA256"
+ select SHA256
+
+endchoice
+
+endif
+
config DYNAMIC_CRC_TABLE
bool
depends on CRC32
diff --git a/common/Makefile b/common/Makefile
index f75e25e..6ca3d98 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -17,6 +17,7 @@ obj-y += startup.o
obj-y += misc.o
obj-y += memsize.o
obj-$(CONFIG_MENU) += menu.o
+obj-$(CONFIG_PASSWORD) += password.o
obj-$(CONFIG_MODULES) += module.o
extra-$(CONFIG_MODULES) += module.lds
diff --git a/common/password.c b/common/password.c
new file mode 100644
index 0000000..cf36970
--- /dev/null
+++ b/common/password.c
@@ -0,0 +1,286 @@
+/*
+ * Copyright (c) 2008-2010 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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 <common.h>
+#include <password.h>
+#include <errno.h>
+#include <readkey.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <digest.h>
+#include <malloc.h>
+#include <xfuncs.h>
+
+#if defined(CONFIG_PASSWD_SUM_MD5)
+#define PASSWD_SUM "md5"
+#elif defined(CONFIG_PASSWD_SUM_SHA1)
+#define PASSWD_SUM "sha1"
+#elif defined(CONFIG_PASSWD_SUM_SHA256)
+#define PASSWD_SUM "sha256"
+#endif
+
+int password(unsigned char *passwd, size_t length, int flags)
+{
+ unsigned char *buf = passwd;
+ int pos = 0;
+ unsigned char ch;
+
+ if (!passwd)
+ return -EINVAL;
+
+ do {
+ ch = getc();
+
+ switch (ch) {
+ case '\r':
+ case '\n':
+ *buf = '\0';
+ puts("\r\n");
+ return pos;
+ case '\0':
+ case '\t':
+ continue;
+ case CTL_CH('c'):
+ passwd[0] = '\0';
+ puts("\r\n");
+ return 0;
+ case CTL_CH('h'):
+ case KEY_DEL7:
+ case KEY_DEL:
+ if (flags & STAR && pos > 0)
+ puts("\b \b");
+ *buf = '\0';
+ buf--;
+ pos--;
+ continue;
+ default:
+ if (pos < length - 1) {
+ if (flags & STAR)
+ putchar('*');
+ else if (flags & CLEAR)
+ putchar(ch);
+
+ *buf = ch;
+ buf++;
+ pos++;
+ } else {
+ if (flags & STAR)
+ putchar('\a');
+ }
+ }
+ } while(1);
+}
+
+int is_passwd_enable(void)
+{
+ int fd;
+
+ fd = open(PASSWD_FILE, O_RDONLY);
+
+ if (fd < 0)
+ return 0;
+
+ close(fd);
+
+ return 1;
+}
+
+int passwd_disable(void)
+{
+ return unlink(PASSWD_FILE);
+}
+
+static unsigned char to_digit(unsigned char c)
+{
+ if (c >= '0' && c <= '9')
+ c -= '0';
+ else
+ c -= 'a' - 10;
+
+ return c;
+}
+
+static unsigned char to_hexa(unsigned char c)
+{
+ if (c < 10)
+ c += '0';
+ else
+ c += 'a' - 10;
+
+ return c;
+}
+
+int read_passwd(unsigned char *sum, size_t length)
+{
+ int fd;
+ int ret = 0;
+ unsigned char c;
+
+ if (!sum && length < 1)
+ return -EINVAL;
+
+ fd = open(PASSWD_FILE, O_RDONLY);
+
+ if (fd < 0)
+ return fd;
+
+ do {
+ ret = read(fd, &c, sizeof(char));
+
+ if (ret < 0)
+ goto exit;
+
+ *sum = to_digit(c) << 4;
+
+ ret = read(fd, &c, sizeof(char));
+
+ if (ret < 0)
+ goto exit;
+
+ *sum |= to_digit(c);
+ sum++;
+ length--;
+ } while(length > 0);
+
+exit:
+
+ ret = 0;
+
+ close(fd);
+
+ return ret;
+}
+
+int write_passwd(unsigned char *sum, size_t length)
+{
+ int fd;
+ unsigned char c;
+ int ret = 0;
+
+ if (!sum && length < 1)
+ return -EINVAL;
+
+ fd = open(PASSWD_DIR, O_RDONLY);
+
+ if (fd < 0)
+ mkdir(PASSWD_DIR, 644);
+
+ close(fd);
+
+ fd = open(PASSWD_FILE, O_WRONLY | O_CREAT, 600);
+
+ if (fd < 0)
+ return fd;
+
+ do {
+ c = to_hexa(*sum >> 4 & 0xf);
+
+ ret = write(fd, &c, sizeof(unsigned char));
+
+ if (ret < 0)
+ goto exit;
+
+ c = to_hexa(*sum & 0xf);
+
+ ret = write(fd, &c, sizeof(unsigned char));
+
+ if (ret < 0)
+ goto exit;
+
+ sum++;
+ length--;
+ } while(length > 0);
+
+ ret = 0;
+
+exit:
+ close(fd);
+
+ return ret;
+}
+
+int check_passwd(unsigned char* passwd, size_t length)
+{
+ struct digest *d;
+ unsigned char *passwd1_sum;
+ unsigned char *passwd2_sum;
+ int ret = 0;
+
+ d = digest_get_by_name(PASSWD_SUM);
+
+ passwd1_sum = calloc(d->length, sizeof(unsigned char));
+
+ if (!passwd1_sum)
+ return -ENOMEM;
+
+ passwd2_sum = calloc(d->length, sizeof(unsigned char));
+
+ if (!passwd2_sum) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ d->init(d);
+
+ d->update(d, passwd, length);
+
+ d->final(d, passwd1_sum);
+
+ ret = read_passwd(passwd2_sum, d->length);
+
+ if (ret < 0)
+ goto err2;
+
+ if (strncmp(passwd1_sum, passwd2_sum, d->length) == 0)
+ ret = 1;
+
+err2:
+ free(passwd2_sum);
+err1:
+ free(passwd1_sum);
+
+ return ret;
+}
+
+int set_passwd(unsigned char* passwd, size_t length)
+{
+ struct digest *d;
+ unsigned char *passwd_sum;
+ int ret;
+
+ d = digest_get_by_name(PASSWD_SUM);
+
+ passwd_sum = calloc(d->length, sizeof(unsigned char));
+
+ if (!passwd_sum)
+ return -ENOMEM;
+
+ d->init(d);
+
+ d->update(d, passwd, length);
+
+ d->final(d, passwd_sum);
+
+ ret = write_passwd(passwd_sum, d->length);
+
+ free(passwd_sum);
+
+ return ret;
+}