commit 0803f196c8d48a68cb37014e6bb7325c9fa4ded7
Author: Joscha <brummer@migejolise.de>
Date:   Mon Nov 19 10:37:56 2018 +0000

    Initial commit

diff --git a/.gitignore b/.gitignore
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+bin/
+include/
+lib/
+lib64
+pip-selfcheck.json
+pyvenv.cfg
diff --git a/plan.md b/plan.md
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+# Config
+
+- python script as config
+- imports PFERD as library
+- operates relative to its own path
+
+## Example folder structure
+
+```
+.../
+  Vorlesungen/
+    PFERD/           as symlink, locally or in python's import path
+    PFERDconf.py     does things relative to its own location (hopefully)
+    GBI/             folder to synchronize files into
+      ...
+    Prog/            folder to synchronize files into
+      ...
+```
+
+## Example config
+
+```python
+import PFERD
+
+def gbi_filter(ilias_path):
+   ...               # rename and move files, or filter them
+   return local_path # or None if file should be ignored
+
+kit = PFERD.KIT()
+kit.synchronize("crs_855240", "GBI", filter=gbi_filter)
+kit.synchronize("crs_851237", "Prog") # default filter preserves paths
+```
+
+# Structure
+
+## Things that need to be done
+
+- figure out where config file is located
+- get and store shibboleth session cookie
+- get and store ilias session cookie
+- download specific ilias urls (mostly goto.php, probably)
+- parse web page
+- determine if logging in is necessary
+- authenticate if necessary
+- don't re-login if shibboleth session cookie is still valid
+- find folders in current folder
+- find files to download in current folder
+- ignore LA1 test thingy
+- crawl folders and create directory-like structure/file paths
+- use filter function for paths
+- download files to local file paths
+- create folders as necessary
+- remember downloaded files
+- find files that were not previously downloaded
+- remove un-downloaded files
+- remove unnecessary folders (prompt user before deleting!)
+- logging
+	- display crawl progress
+	- display structure of found files using neat box drawing characters
+	- display download progress
+
+## How those things are usually done
+
+Step 3. to 5. are run for each synchronize() call.
+
+1. launch script
+	- load cookie files
+2. authenticate
+   (assuming enough time has passed for the session cookies to become invalid)
+	- prompt user for username
+	- prompt user for password (no echo)
+	- somehow obtain valid session cookies
+3. crawl
+	- start at the id specified in synchronize() args
+	- search for folders and files to download
+	- build directory structure
+4. download
+	- run each path through filter function
+	- if file was not filtered:
+		- download file and save result to filtered path
+		- use sync directory specified in synchronize() args
+	- remember the filtered path for later
+5. cleanup
+	- search sync directory for files
+	- for each file not previously downloaded:
+		- prompt user if they want to delete the file (default: No)
+		- delete file if user answered Yes
diff --git a/requirements.txt b/requirements.txt
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+aiohttp==3.4.4
+async-timeout==3.0.1
+attrs==18.2.0
+beautifulsoup4==4.6.3
+chardet==3.0.4
+idna==2.7
+multidict==4.4.2
+yarl==1.2.6