From 956195d67eb8c91ad702518a3806450e5d2d8f4a Mon Sep 17 00:00:00 2001
From: Daniel Markstedt <markstedt@gmail.com>
Date: Sat, 28 Jan 2023 14:34:34 -0800
Subject: [PATCH] Ability to download and upload config files (#1083)

- Rename `/config/load` endpoint to `/config/action` since it has multiple functions
- Add a `send` function to above endpoint, which triggers a download of the config file, and use it with a new Download button on the index page
- Add an option to upload to the CFG_DIR
- Improve layout of the file transfer destination web form: radio buttons before labels, and better padding between options
- Add a test for config downloading
---
 python/web/src/static/themes/modern/style.css |  8 +--
 python/web/src/templates/index.html           |  7 +--
 python/web/src/templates/upload.html          |  7 ++-
 python/web/src/web.py                         | 25 +++++++---
 python/web/tests/api/test_settings.py         | 49 +++++++++++++++++--
 5 files changed, 77 insertions(+), 19 deletions(-)

diff --git a/python/web/src/static/themes/modern/style.css b/python/web/src/static/themes/modern/style.css
index 35632141..978d9c6a 100644
--- a/python/web/src/static/themes/modern/style.css
+++ b/python/web/src/static/themes/modern/style.css
@@ -49,6 +49,10 @@ a:hover {
   text-decoration: none;
 }
 
+input[type="radio"] {
+  margin: 0 0.1rem 0 0.75rem;
+}
+
 /*
  ------------------------------------------------------------------------------
  Tables
@@ -145,10 +149,6 @@ select {
   align-items: center;
 }
 
-.dropzone label {
-  padding: 0 0.5rem;
-}
-
 .dropzone p,
 .dropzone .dz-default {
   flex: 0 0 100%;
diff --git a/python/web/src/templates/index.html b/python/web/src/templates/index.html
index be98df14..06adc9b5 100644
--- a/python/web/src/templates/index.html
+++ b/python/web/src/templates/index.html
@@ -13,7 +13,7 @@
 </details>
 
 <p>
-<form action="/config/load" method="post" id="config-actions">
+<form action="/config/action" method="post" id="config-actions">
     <label for="config_load_name">{{ _("File Name:") }}</label>
     <select name="name" id="config_load_name" required="" width="14">
         {% if config_files %}
@@ -30,6 +30,7 @@
     </select>
     <input name="load" type="submit" value="{{ _("Load") }}" onclick="return confirm('{{ _("Detach all current device and Load configuration?") }}')">
     <input name="delete" type="submit" value="{{ _("Delete") }}" onclick="return confirm('{{ _("Delete configuration file?") }}')">
+    <input name="send" type="submit" value="{{ _("Download") }}">
 </form>
 </p>
 
@@ -368,10 +369,10 @@
 <form action="/files/download_url" method="post">
     <label for="download_url">{{ _("Download file from URL:") }}</label>
     <input name="url" id="download_url" required="" type="url">
-    <label for="disk_images">{{ _("Disk Images") }}</label>
     <input type="radio" name="destination" id="disk_images" value="disk_images" checked="checked">
-    <label for="shared_files">{{ _("Shared Files") }}</label>
+    <label for="disk_images">{{ _("Disk Images") }}</label>
     <input type="radio" name="destination" id="shared_files" value="shared_files">
+    <label for="shared_files">{{ _("Shared Files") }}</label>
     <input type="submit" value="{{ _("Download") }}" onclick="processNotify('{{ _("Downloading File...") }}')">
 </form>
 </section>
diff --git a/python/web/src/templates/upload.html b/python/web/src/templates/upload.html
index a67941d5..c76aecb0 100644
--- a/python/web/src/templates/upload.html
+++ b/python/web/src/templates/upload.html
@@ -7,14 +7,17 @@
     <li>{{ _("You have to manually clean up partially uploaded files, as a result of cancelling the upload or closing this page.") }}</li>
     <li>{{ _("Disk Images") }} = {{ env["image_dir"] }}</li>
     <li>{{ _("Shared Files") }} = {{ FILE_SERVER_DIR }}</li>
+    <li>{{ _("PiSCSI Config") }} = {{ CFG_DIR }}</li>
 </ul>
 
 <h3>{{ _("Destination") }}</h3>
 <form name="dropper" action="/files/upload" method="post" class="dropzone dz-clickable" enctype="multipart/form-data" id="dropper">
-    <label for="disk_images">{{ _("Disk Images") }}</label>
     <input type="radio" name="destination" id="disk_images" value="disk_images" checked="checked">
-    <label for="shared_files">{{ _("Shared Files") }}</label>
+    <label for="disk_images">{{ _("Disk Images") }}</label>
     <input type="radio" name="destination" id="shared_files" value="shared_files">
+    <label for="shared_files">{{ _("Shared Files") }}</label>
+    <input type="radio" name="destination" id="piscsi_config" value="piscsi_config">
+    <label for="piscsi_config">{{ _("PiSCSI Config") }}</label>
 </form>
 
 <script type="application/javascript">
diff --git a/python/web/src/web.py b/python/web/src/web.py
index a7f579a2..51b9bc75 100644
--- a/python/web/src/web.py
+++ b/python/web/src/web.py
@@ -322,6 +322,7 @@ def upload_page():
         template="upload.html",
         page_title=_("PiSCSI File Upload"),
         max_file_size=int(int(MAX_FILE_SIZE) / 1024 / 1024),
+        CFG_DIR=CFG_DIR,
         FILE_SERVER_DIR=FILE_SERVER_DIR,
     )
 
@@ -467,13 +468,16 @@ def config_save():
     return response(error=True, message=process["msg"])
 
 
-@APP.route("/config/load", methods=["POST"])
+@APP.route("/config/action", methods=["POST"])
 @login_required
-def config_load():
+def config_action():
     """
-    Loads a config file from disk
+    Carries out on an operation on the config file
     """
-    file_name = Path(request.form.get("name")).name
+    file_name = Path(request.form.get("name"))
+    safe_path = is_safe_path(file_name)
+    if not safe_path["status"]:
+        return response(error=True, message=safe_path["msg"])
 
     if "load" in request.form:
         process = file_cmd.read_config(file_name)
@@ -484,15 +488,20 @@ def config_load():
         return response(error=True, message=process["msg"])
 
     if "delete" in request.form:
-        file_path = Path(CFG_DIR) / file_name
-        process = file_cmd.delete_file(file_path)
+        process = file_cmd.delete_file(Path(CFG_DIR) / file_name)
         process = ReturnCodeMapper.add_msg(process)
         if process["status"]:
             return response(message=process["msg"])
 
         return response(error=True, message=process["msg"])
 
-    return response(error=True, message="Action field (load, delete) missing")
+    if "send" in request.form:
+        return send_from_directory(CFG_DIR, str(file_name), as_attachment=True)
+
+    return response(
+        error=True,
+        message="No known operation in request header. Expected one of: load, delete, send",
+    )
 
 
 @APP.route("/files/diskinfo", methods=["POST"])
@@ -986,6 +995,8 @@ def upload_file():
         destination_dir = server_info["image_dir"]
     elif destination == "shared_files":
         destination_dir = FILE_SERVER_DIR
+    elif destination == "piscsi_config":
+        destination_dir = CFG_DIR
     else:
         return make_response(f"Invalid destination '{destination}'", 403)
 
diff --git a/python/web/tests/api/test_settings.py b/python/web/tests/api/test_settings.py
index d1c311e2..f2b92266 100644
--- a/python/web/tests/api/test_settings.py
+++ b/python/web/tests/api/test_settings.py
@@ -74,7 +74,7 @@ def test_show_logs(http_client):
 
 
 # route("/config/save", methods=["POST"])
-# route("/config/load", methods=["POST"])
+# route("/config/action", methods=["POST"])
 def test_save_load_and_delete_configs(env, http_client):
     config_name = str(uuid.uuid4())
     config_json_file = f"{config_name}.json"
@@ -115,7 +115,7 @@ def test_save_load_and_delete_configs(env, http_client):
 
     # Load the saved config
     response = http_client.post(
-        "/config/load",
+        "/config/action",
         data={
             "name": config_json_file,
             "load": True,
@@ -135,7 +135,7 @@ def test_save_load_and_delete_configs(env, http_client):
 
     # Delete the saved config
     response = http_client.post(
-        "/config/load",
+        "/config/action",
         data={
             "name": config_json_file,
             "delete": True,
@@ -153,6 +153,49 @@ def test_save_load_and_delete_configs(env, http_client):
     assert config_json_file not in http_client.get("/").json()["data"]["config_files"]
 
 
+# route("/config/save", methods=["POST"])
+# route("/config/action", methods=["POST"])
+def test_download_configs(env, http_client, delete_file):
+    config_name = str(uuid.uuid4())
+    config_json_file = f"{config_name}.json"
+
+    # Save the initial state to a config
+    response = http_client.post(
+        "/config/save",
+        data={
+            "name": config_name,
+        },
+    )
+
+    assert response.status_code == 200
+    assert config_json_file in http_client.get("/").json()["data"]["config_files"]
+
+    # Download the saved config
+    response = http_client.post(
+        "/config/action",
+        data={
+            "name": config_json_file,
+            "send": True,
+        },
+    )
+
+    assert response.status_code == 200
+    assert response.headers["content-type"] == "application/json"
+    assert response.headers["content-disposition"] == f"attachment; filename={config_json_file}"
+
+    # Delete the saved config
+    response = http_client.post(
+        "/config/action",
+        data={
+            "name": config_json_file,
+            "delete": True,
+        },
+    )
+
+    assert response.status_code == 200
+    assert config_json_file not in http_client.get("/").json()["data"]["config_files"]
+
+
 # route("/theme", methods=["POST"])
 @pytest.mark.parametrize(
     "theme",