commit 43f4d7516427d0d581686f2ee84b451e3197e09d
Author: max/sooulix <maxime@freepoteries.fr>
Date:   Mon Feb 10 21:24:31 2025 +0100

    initial commit

diff --git a/src/add_share.php b/src/add_share.php
new file mode 100644
index 0000000..9695188
--- /dev/null
+++ b/src/add_share.php
@@ -0,0 +1,50 @@
+<?php
+function current_date_offset($offset)
+{
+    if ($offset == 'U')
+    {
+        return "";
+    }
+    $date = date_create();
+    $date->add(new DateInterval("P" . $offset));
+    return $date->format(DateTimeInterface::ISO8601);
+}
+
+function write_line($dirname, $name, $description, $creation, $expiration, $expires)
+{
+    file_put_contents(
+        tsv_path($dirname),
+        implode("\t", [
+            $name,
+            $description,
+            $creation,
+            $expiration,
+            $expires . "\n"
+        ]),
+        FILE_APPEND
+    );
+}
+
+if (isset($_POST) && isset($_GET['action']) && $_GET['action'] == 'add')
+{
+    $creation = (new DateTime())->format(DateTimeInterface::ISO8601);
+    $expires = current_date_offset($_POST['expiration']);
+    write_line(
+        $_POST['dirname'],
+        $_POST['name'],
+        $_POST['description'],
+        $creation,
+        $_POST['expiration'],
+        $expires
+    );
+    $new_share = [
+        "dir" => $_POST['dirname'],
+        "name" => $_POST['name'],
+        "description" => $_POST['description'],
+        "creation" => $creation,
+        "expiration" => $_POST['expiration'],
+        "expires" => current_date_offset($_POST['expiration'])
+    ];
+    $new_share["link"] = "./read.php?id=" . gen_identifier($new_share);
+}
+?>
diff --git a/src/common.php b/src/common.php
new file mode 100644
index 0000000..0750f17
--- /dev/null
+++ b/src/common.php
@@ -0,0 +1,181 @@
+<?php
+
+function gen_identifier($share)
+{
+    return md5(
+        implode(
+            "$",
+            [
+                $GLOBALS['SANDDIR_SALT'],
+                $share['dir'],
+                $share['creation']
+            ]
+        )
+    ); 
+}
+
+
+function dir_list($dir)
+{
+    $children = array();
+    foreach (scandir($dir) as $child)
+    {
+        if ($child[0] != '.')
+        {
+            $chidren[] = $child;
+        }
+    }
+    return $chidren;
+}
+
+function tsv_path($dir)
+{
+    return implode('/', [
+        $GLOBALS['SANDDIR_ROOT_DIR'],
+        $dir,
+        '.sanddir.tsv'
+    ]);
+}
+
+function read_tsv($dir, $path)
+{
+     
+    $lines = explode("\n", file_get_contents($path));
+
+    $shares = [];
+    foreach ($lines as $line)
+    {
+        if (!$line)
+        {
+            continue;
+        }
+        $split = explode("\t", $line);
+        if (count($split) < 5)
+        {
+            throw new Exception("Error with line " . $line);
+        }
+        $shares[] = [
+            "dir" => $dir,
+            "name" => $split[0],
+            "description" => $split[1],
+            "creation" => $split[2],
+            "expiration" => $split[3],
+            "expires" => $split[4]
+        ];
+    }
+    return $shares;
+}
+
+function share_list($dir)
+{
+    return array_reduce(
+        dir_list($dir),
+        function($carry, $child)
+        {
+            $tsv = tsv_path($child);
+            if (is_file($tsv))
+            {
+                return array_merge($carry, read_tsv($child, $tsv));
+            }
+            return $carry;
+        },
+        []
+    );
+}
+
+function zip_dir($dir)
+{
+    $filename = tempnam('./tmp', '');
+    $zip = new ZipArchive();
+    $zip->open($filename, ZipArchive::CREATE);
+
+    function inner($stack, $result)
+    {
+
+        $path = implode('/', $stack);
+        if (is_file($path))
+        {
+            array_push($result, $path);
+        }
+        else
+        {
+            foreach (scandir($path) as $elt)
+            {
+                if ($elt[0] == '.')
+                {
+                    continue;
+                }
+                else if (is_dir($path))
+                {
+                    array_push($stack, $elt);
+                    $result = inner($stack, $result);
+                    array_pop($stack);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    $result = inner([$GLOBALS['SANDDIR_ROOT_DIR'] . '/' . $dir], []);
+    sort($result);
+
+    $dirs = [];
+    $files = [];
+    foreach ($result as $path)
+    {
+        $path_without_root_dir = array_slice(
+            explode('/', $path), 2
+        );
+        $files[] = [
+            $path,
+            implode('/', $path_without_root_dir)
+        ];
+        $dirs[] = array_slice($path_without_root_dir, 0, count($path_without_root_dir) -1);
+    }
+
+    sort($dirs);
+
+    $dirs = array_unique(
+        array_map(
+            function($item)
+            {
+                return implode('/', $item);
+            },
+            $dirs
+        )
+    );
+
+    foreach ($dirs as $dir)
+    {
+        $zip->addEmptyDir($dir);
+    }
+    foreach ($files as $file)
+    {
+        $zip->addFile($file[0], $file[1]); 
+    }
+
+    $zip->close();
+
+    return $filename;
+}
+
+function zip_response($share)
+{
+    $filename = zip_dir($share);
+    $size = filesize($filename);
+    header('Content-Type: application/zip');
+    header('Content-Disposition: attachment; filename=' . $share . '.zip');
+    header('Content-Length: ' . $size);
+    ob_end_clean();
+    flush();
+    readfile($filename);
+    exit;
+}
+
+function _($var)
+{
+    print($var);
+}
+
+?>
diff --git a/src/config_sanddir.php b/src/config_sanddir.php
new file mode 100644
index 0000000..82c1b62
--- /dev/null
+++ b/src/config_sanddir.php
@@ -0,0 +1,4 @@
+<?php
+$SANDDIR_ROOT_DIR = './share';
+$SANDDIR_SALT = 'abcde12345abcde12345';
+?>
diff --git a/src/dir_list_template.php b/src/dir_list_template.php
new file mode 100644
index 0000000..67e82ea
--- /dev/null
+++ b/src/dir_list_template.php
@@ -0,0 +1,12 @@
+<ul>
+    <?php 
+    foreach (dir_list($GLOBALS['SANDDIR_ROOT_DIR']) as $share_dir)
+    {
+    ?>
+    <li>
+        <a href="?dir=<?php _($share_dir) ?>"><?php _($share_dir) ?></a>
+    </li>
+    <?php
+    }
+    ?>
+</ul>
diff --git a/src/index.php b/src/index.php
new file mode 100644
index 0000000..7a2d218
--- /dev/null
+++ b/src/index.php
@@ -0,0 +1,24 @@
+<html>
+<?php
+$new_share = NULL;
+
+require_once('./common.php');
+
+require_once('./config_sanddir.php');
+
+include('./add_share.php');
+
+include('./dir_list_template.php');
+
+if ($new_share)
+{
+    include('new_share_template.php');
+}
+else if (isset($_GET['dir']))
+{
+    $selected_dir = $_GET['dir'];
+    include('./sanddir.php');
+}
+
+?>
+</html>
diff --git a/src/new_share_template.php b/src/new_share_template.php
new file mode 100644
index 0000000..a98bb93
--- /dev/null
+++ b/src/new_share_template.php
@@ -0,0 +1,5 @@
+Share "<?php _($new_share["dir"]) ?> with following link : <a href="<?php _($new_share["link"]) ?>"><?php _($new_share["link"]) ?></a>
+
+<?php
+print_r($new_share);
+?>
diff --git a/src/read.php b/src/read.php
new file mode 100644
index 0000000..b7ea4c3
--- /dev/null
+++ b/src/read.php
@@ -0,0 +1,16 @@
+<?php
+require_once('./common.php');
+
+require_once('./config_sanddir.php');
+
+if (isset($_GET['id']))
+{
+    foreach (share_list($GLOBALS['SANDDIR_ROOT_DIR']) as $share)
+    {
+        if (gen_identifier($share) == $_GET['id'])
+        {
+            zip_response($share['dir']);
+        }
+    }
+}
+?>
diff --git a/src/sanddir.php b/src/sanddir.php
new file mode 100644
index 0000000..cd57370
--- /dev/null
+++ b/src/sanddir.php
@@ -0,0 +1,8 @@
+<?php
+function share_links($dir)
+{
+    return [];
+}
+
+include('./sanddir_template.php');
+?>
diff --git a/src/sanddir_template.php b/src/sanddir_template.php
new file mode 100644
index 0000000..5be713d
--- /dev/null
+++ b/src/sanddir_template.php
@@ -0,0 +1,48 @@
+<h1>Sanddir <?php _($selected_dir); ?></h1>
+
+<a href="?dir=<?php _($selected_dir); ?>&action=share">Add a share</a>
+
+<?php
+if (isset($_GET['action']) && $_GET['action'] == 'share')
+{
+?>
+    <form method="POST" action="index.php?dir=<?php _($selected_dir) ?>&action=add">
+        <input name="dirname" id="dirname" type="hidden" value="<?php _($selected_dir) ?>" />
+        <label for="name">Name</label>
+        <input name="name" id="name" type="text" />
+        </br>
+
+        <label for="description">Description</label>
+        <input name="description" id="description" type="text" />
+        </br>
+
+        <label for="expiration">Expiration</label>
+        <select name="expiration" id="expiration">
+            <option value="1D">1 day</option>
+            <option value="1W">1 week</option>
+            <option value="1M">1 month</option>
+            <option value="1Y">1 year</option>
+            <option value="U">undefined</option>
+        </select>
+        </br>
+
+        <input type="submit" />
+    </form>
+<?php
+}
+?>
+
+<h2>Existing links</h2>
+<ul>
+<?php
+foreach (share_links($selected_dir) as $link)
+{
+?>
+    <li>
+        <a href="<?php _($link) ?>"><?php _($link) ?></a>
+    </li>
+<?php
+}
+?>
+</ul>
+