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-rw-r--r--commands/passwd.c8
-rw-r--r--common/Kconfig5
-rw-r--r--common/Makefile20
-rw-r--r--common/password.c94
-rw-r--r--include/password.h22
5 files changed, 127 insertions, 22 deletions
diff --git a/commands/passwd.c b/commands/passwd.c
index baccfa6..368c401 100644
--- a/commands/passwd.c
+++ b/commands/passwd.c
@@ -63,7 +63,7 @@ static int do_passwd(int argc, char *argv[])
goto err;
}
- ret = set_passwd(passwd1, passwd1_len);
+ ret = set_env_passwd(passwd1, passwd1_len);
if (ret < 0) {
puts("Sorry, passwords write failed\n");
@@ -78,15 +78,15 @@ err:
return 1;
disable:
- passwd_disable();
+ passwd_env_disable();
puts("passwd: password disabled\n");
return ret;
}
static const __maybe_unused char cmd_passwd_help[] =
"Usage: passwd\n"
-"passwd allow you to specify a password\n"
-"to disable it put an empty password\n"
+"passwd allow you to specify a password in the env\n"
+"to disable it put an empty password will still use the default password if set\n"
;
BAREBOX_CMD_START(passwd)
diff --git a/common/Kconfig b/common/Kconfig
index dd70578..5d92284 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -385,6 +385,11 @@ config PASSWORD
help
allow you to have password protection framework
+config PASSWORD_DEFAULT
+ string
+ prompt "Password default"
+ depends on PASSWORD
+
if PASSWORD
choice
diff --git a/common/Makefile b/common/Makefile
index 64eacc3..9a9e3fe 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -114,6 +114,26 @@ cmd_env_h = cat $< | (cd $(obj) && $(objtree)/scripts/bin2c default_environment)
$(obj)/barebox_default_env.h: $(obj)/barebox_default_env$(barebox_default_env_comp) FORCE
$(call if_changed,env_h)
+quiet_cmd_pwd_h = PWDH $@
+ifneq ($(CONFIG_PASSWORD_DEFAULT),"")
+PASSWD_FILE := $(shell cd $(srctree); find $(CONFIG_PASSWORD_DEFAULT) -type f)
+cmd_pwd_h = echo -n "const char default_passwd[] = \"" > $@; \
+ cat $< | tr -d '\n' >> $@; \
+ echo "\";" >> $@
+
+include/generated/passwd.h: $(PASSWD_FILE)
+ $(call if_changed,pwd_h)
+else
+cmd_pwd_h = echo "const char default_passwd[] = \"\";" > $@
+
+include/generated/passwd.h: FORCE
+ $(call if_changed,pwd_h)
+endif
+
+targets += include/generated/passwd.h
+
+$(obj)/password.o: include/generated/passwd.h
+
# dependencies on generated files need to be listed explicitly
$(obj)/version.o: include/generated/compile.h
diff --git a/common/password.c b/common/password.c
index d157a11..9c1e54a 100644
--- a/common/password.c
+++ b/common/password.c
@@ -25,6 +25,7 @@
#include <malloc.h>
#include <xfuncs.h>
#include <clock.h>
+#include <generated/passwd.h>
#if defined(CONFIG_PASSWD_SUM_MD5)
#define PASSWD_SUM "md5"
@@ -97,7 +98,13 @@ int password(unsigned char *passwd, size_t length, int flags, int timeout)
}
EXPORT_SYMBOL(password);
-int is_passwd_enable(void)
+int is_passwd_default_enable(void)
+{
+ return strlen(default_passwd) > 0;
+}
+EXPORT_SYMBOL(is_passwd_default_enable);
+
+int is_passwd_env_enable(void)
{
int fd;
@@ -110,13 +117,13 @@ int is_passwd_enable(void)
return 1;
}
-EXPORT_SYMBOL(is_passwd_enable);
+EXPORT_SYMBOL(is_passwd_env_enable);
-int passwd_disable(void)
+int passwd_env_disable(void)
{
return unlink(PASSWD_FILE);
}
-EXPORT_SYMBOL(passwd_disable);
+EXPORT_SYMBOL(passwd_env_disable);
static unsigned char to_digit(unsigned char c)
{
@@ -140,6 +147,43 @@ static unsigned char to_hexa(unsigned char c)
int read_passwd(unsigned char *sum, size_t length)
{
+ if (is_passwd_env_enable())
+ return read_env_passwd(sum, length);
+ else if (is_passwd_default_enable())
+ return read_default_passwd(sum, length);
+ else
+ return -EINVAL;
+}
+
+int read_default_passwd(unsigned char *sum, size_t length)
+{
+ int i = 0;
+ int len = strlen(default_passwd);
+ unsigned char *buf = (unsigned char *)default_passwd;
+ unsigned char c;
+
+ if (!sum || length < 1)
+ return -EINVAL;
+
+ for (i = 0; i < len && length > 0; i++) {
+ c = buf[i];
+ i++;
+
+ *sum = to_digit(c) << 4;
+
+ c = buf[i];
+
+ *sum |= to_digit(c);
+ sum++;
+ length--;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(read_default_passwd);
+
+int read_env_passwd(unsigned char *sum, size_t length)
+{
int fd;
int ret = 0;
unsigned char c;
@@ -178,9 +222,9 @@ exit:
return ret;
}
-EXPORT_SYMBOL(read_passwd);
+EXPORT_SYMBOL(read_env_passwd);
-int write_passwd(unsigned char *sum, size_t length)
+int write_env_passwd(unsigned char *sum, size_t length)
{
int fd;
unsigned char c;
@@ -227,9 +271,9 @@ exit:
return ret;
}
-EXPORT_SYMBOL(write_passwd);
+EXPORT_SYMBOL(write_env_passwd);
-int check_passwd(unsigned char* passwd, size_t length)
+static int __check_passwd(unsigned char* passwd, size_t length, int std)
{
struct digest *d;
unsigned char *passwd1_sum;
@@ -256,7 +300,10 @@ int check_passwd(unsigned char* passwd, size_t length)
d->final(d, passwd1_sum);
- ret = read_passwd(passwd2_sum, d->length);
+ if (std)
+ ret = read_env_passwd(passwd2_sum, d->length);
+ else
+ ret = read_default_passwd(passwd2_sum, d->length);
if (ret < 0)
goto err2;
@@ -271,9 +318,30 @@ err1:
return ret;
}
-EXPORT_SYMBOL(check_passwd);
-int set_passwd(unsigned char* passwd, size_t length)
+int check_default_passwd(unsigned char* passwd, size_t length)
+{
+ return __check_passwd(passwd, length, 0);
+}
+EXPORT_SYMBOL(check_default_passwd);
+
+int check_env_passwd(unsigned char* passwd, size_t length)
+{
+ return __check_passwd(passwd, length, 1);
+}
+EXPORT_SYMBOL(check_env_passwd);
+
+int check_passwd(unsigned char* passwd, size_t length)
+{
+ if (is_passwd_env_enable())
+ return check_env_passwd(passwd, length);
+ else if (is_passwd_default_enable())
+ return check_default_passwd(passwd, length);
+ else
+ return -EINVAL;
+}
+
+int set_env_passwd(unsigned char* passwd, size_t length)
{
struct digest *d;
unsigned char *passwd_sum;
@@ -292,10 +360,10 @@ int set_passwd(unsigned char* passwd, size_t length)
d->final(d, passwd_sum);
- ret = write_passwd(passwd_sum, d->length);
+ ret = write_env_passwd(passwd_sum, d->length);
free(passwd_sum);
return ret;
}
-EXPORT_SYMBOL(set_passwd);
+EXPORT_SYMBOL(set_env_passwd);
diff --git a/include/password.h b/include/password.h
index df03cd7..0dd1054 100644
--- a/include/password.h
+++ b/include/password.h
@@ -28,11 +28,23 @@
int password(unsigned char *passwd, size_t length, int flags, int timeout);
int read_passwd(unsigned char *sum, size_t length);
-int write_passwd(unsigned char *sum, size_t length);
-
-int is_passwd_enable(void);
-int passwd_disable(void);
int check_passwd(unsigned char* passwd, size_t length);
-int set_passwd(unsigned char* passwd, size_t length);
+
+int read_env_passwd(unsigned char *sum, size_t length);
+int write_env_passwd(unsigned char *sum, size_t length);
+
+int read_default_passwd(unsigned char *sum, size_t length);
+int is_passwd_default_enable(void);
+int check_default_passwd(unsigned char* passwd, size_t length);
+
+int is_passwd_env_enable(void);
+int passwd_env_disable(void);
+int check_env_passwd(unsigned char* passwd, size_t length);
+int set_env_passwd(unsigned char* passwd, size_t length);
+
+static inline int is_passwd_enable(void)
+{
+ return is_passwd_default_enable() || is_passwd_env_enable();
+}
#endif /* __PASSWORD_H__ */