From b8ccdef0306cf19cde9511ec244fd43b4ae1d863 Mon Sep 17 00:00:00 2001
From: Jinkun Jang <jinkun.jang@samsung.com>
Date: Wed, 13 Mar 2013 01:49:53 +0900
Subject: Tizen 2.1 base

---
 md5/media-thumb-hash.c | 132 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 md5/media-thumb-hash.c

(limited to 'md5/media-thumb-hash.c')

diff --git a/md5/media-thumb-hash.c b/md5/media-thumb-hash.c
new file mode 100644
index 0000000..bd8df13
--- /dev/null
+++ b/md5/media-thumb-hash.c
@@ -0,0 +1,132 @@
+/* GLIB - Library of useful routines for C programming
+ *
+ * gconvert.c: Convert between character sets using iconv
+ * Copyright Red Hat Inc., 2000
+ * Authors: Havoc Pennington <hp@redhat.com>, Owen Taylor <otaylor@redhat.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/* The array below is taken from gconvert.c, which is licensed by GNU Lesser General Public License
+ * Code to escape string is also taken partially from gconvert.c
+ * File name is changed to media-thumb-hash.c
+ */
+
+#include "md5.h"
+#include "media-thumbnail-private.h"
+#include <string.h>
+#include <alloca.h>
+
+
+static const char ACCEPTABLE_URI_CHARS[96] = {
+	/*      !    "    #    $    %    &    '    (    )    *    +    ,    -    .    / */
+	0x00, 0x3F, 0x20, 0x20, 0x28, 0x00, 0x2C, 0x3F, 0x3F, 0x3F, 0x3F, 0x2A,
+	    0x28, 0x3F, 0x3F, 0x1C,
+	/* 0    1    2    3    4    5    6    7    8    9    :    ;    <    =    >    ? */
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x38, 0x20,
+	    0x20, 0x2C, 0x20, 0x20,
+	/* @    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O */
+	0x38, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	    0x3F, 0x3F, 0x3F, 0x3F,
+	/* P    Q    R    S    T    U    V    W    X    Y    Z    [    \    ]    ^    _ */
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x20,
+	    0x20, 0x20, 0x20, 0x3F,
+	/* `    a    b    c    d    e    f    g    h    i    j    k    l    m    n    o */
+	0x20, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+	    0x3F, 0x3F, 0x3F, 0x3F,
+	/* p    q    r    s    t    u    v    w    x    y    z    {    |    }    ~  DEL */
+	0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x20,
+	    0x20, 0x20, 0x3F, 0x20
+};
+
+char *_media_thumb_generate_hash_name(const char *file)
+{
+	int n;
+	MD5_CTX ctx;
+	static char md5out[(2 * MD5_HASHBYTES) + 1];
+	unsigned char hash[MD5_HASHBYTES];
+	static const char hex[] = "0123456789abcdef";
+
+	char *uri;
+	char *t;
+	const unsigned char *c;
+	int length;
+
+	if (!file) {
+		return NULL;
+	}
+
+	length = 3 * strlen(file) + 9;
+
+	memset(md5out, 0, sizeof(md5out));
+
+#define _check_uri_char(c) \
+((c) >= 32 && (c) < 128 && (ACCEPTABLE_URI_CHARS[(c) - 32] & 0x08))
+
+	uri = alloca(length);
+	if (uri == NULL) {
+		return NULL;
+	}
+
+	strncpy(uri, "file://", length);
+	uri[length - 1] = '\0';
+	t = uri + sizeof("file://") - 1;
+
+	for (c = (const unsigned char *)file; *c != '\0'; c++) {
+		if (!_check_uri_char(*c)) {
+			*t++ = '%';
+			*t++ = hex[*c >> 4];
+			*t++ = hex[*c & 15];
+		} else {
+			*t++ = *c;
+		}
+	}
+	*t = '\0';
+#undef _check_uri_char
+
+	MD5Init(&ctx);
+	MD5Update(&ctx, (unsigned char const *)uri, (unsigned)strlen(uri));
+	MD5Final(hash, &ctx);
+
+	for (n = 0; n < MD5_HASHBYTES; n++) {
+		md5out[2 * n] = hex[hash[n] >> 4];
+		md5out[2 * n + 1] = hex[hash[n] & 0x0f];
+	}
+	md5out[2 * n] = '\0';
+
+	return md5out;
+}
+
+int thumbnail_generate_hash_code(const char *origin_path, char *hash_code, int max_length)
+{
+	char *hash = NULL;
+
+	if (max_length < ((2 * MD5_HASHBYTES) + 1)) {
+		return MEDIA_THUMB_ERROR_INVALID_PARAMETER;
+	}
+
+	hash = _media_thumb_generate_hash_name(origin_path);
+
+	if (hash == NULL) {
+		return MEDIA_THUMB_ERROR_HASHCODE;
+	}
+
+	strncpy(hash_code, hash, max_length);
+	hash_code[strlen(hash_code)] ='\0';
+
+	return MEDIA_THUMB_ERROR_NONE;
+}
+
-- 
cgit v1.2.3