--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/dav/pwd.h Sat Sep 15 11:56:36 2018 +0200
@@ -0,0 +1,138 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2018 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef PWD_H
+#define PWD_H
+
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include <ucx/map.h>
+#include <ucx/buffer.h>
+#include <libidav/crypto.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define PWDSTORE_MAX_LEN 1024
+
+/*
+ * File Format:
+ *
+ * file = header, enc_content
+ * header = magic, version, enc, pwfunc, salt
+ * magic = 1 byte
+ * version = 1 byte
+ * enc = 1 byte
+ * pwfunc = 1 byte
+ * salt = 16 bytes
+ * content = { entry }
+ * entry = length username length password
+ * length = uint16
+ * username = string
+ * password = string
+ *
+ * The content is AES encrypted with a key derived from a password
+ * and the salt. The first 16 bytes are the aes iv.
+ *
+ * All integers are big endian
+ */
+
+#define PWDS_HEADER_SIZE 20
+
+typedef struct PwdStore PwdStore;
+typedef struct PwdEntry PwdEntry;
+
+struct PwdStore {
+ /*
+ * map of all usernames and passwords
+ * key is the username
+ * value is PwdEntry*
+ */
+ UcxMap *pwds;
+
+ /*
+ * a buffer containing the complete file content
+ */
+ UcxBuffer *content;
+
+ /*
+ * key used for encryption/decryption
+ */
+ DavKey *key;
+
+ /*
+ * indicates if the PwdStore is decrypted with pwdstore_decrypt
+ */
+ uint8_t isdecrypted;
+};
+
+#define PWDS_MAGIC(p) (p)->content->space[0]
+#define PWDS_VERSION(p) (p)->content->space[1]
+#define PWDS_ENC(p) (p)->content->space[2]
+#define PWDS_PWFUNC(p) (p)->content->space[3]
+
+#define PWDS_MAGIC_CHAR 'P'
+
+struct PwdEntry {
+ char *user;
+ char *password;
+};
+
+/*
+ * opens the password store
+ * the content is still encrypted and must be decrypted using pwdstore_decrypt
+ */
+PwdStore* pwdstore_open(const char *file);
+
+PwdStore* pwdstore_new(void);
+
+/*
+ * decrypts the password store with a password
+ */
+int pwdstore_decrypt(PwdStore *p);
+
+int pwdstore_setpassword(PwdStore *p, const char *password);
+
+void pwdstore_encsettings(PwdStore *p, uint8_t enc, uint8_t pwfunc);
+
+void pwdstore_free(PwdStore* p);
+
+PwdEntry* pwdstore_get(PwdStore *p, const char *username);
+
+void pwdstore_put(PwdStore *p, const char *username, const char *password);
+
+int pwdstore_store(PwdStore *p, const char *file);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PWD_H */
+