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2.0 (#46)

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* extract scan code to libscan, (wip)

* submodules

* replace curl with mongoose (wip)

* replace onion with mongoose (wip)

* replace onion with mongoose (wip)

* It compiles! (I think)

* Update readme

* Entirely remove libonion (WIP)

* unscramble submodules

* recover screenshot

* Update mappings

* Bug fixes

* update

* media meta fix

* memory fixes

* More bug fixes...

* Bug fix w/ libmagic & vfile

* libmagic fix (again)

* Better lightbox, better video handler, random reloads fix

* Use svg for info icon

* re-enable http auth

* mobi support #41, fix logs

* Update README & cleanup
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# Usage
*More examples (specifically with docker/compose) are in progress*
* [scan](#scan)
* [options](#scan-options)
* [examples](#scan-examples)
* [index format](#index-format)
* [index](#index)
* [options](#index-options)
* [examples](#index-examples)
* [web](#web)
* [options](#web-options)
* [examples](#web-examples)
* [rewrite_url](#rewrite_url)
* [link to specific indices](#link-to-specific-indices)
```
Usage: sist2 scan [OPTION]... PATH
or: sist2 index [OPTION]... INDEX
or: sist2 web [OPTION]... INDEX...
Lightning-fast file system indexer and search tool.
-h, --help show this help message and exit
-v, --version Show version and exit
--verbose Turn on logging
--very-verbose Turn on debug messages
Scan options
-t, --threads=<int> Number of threads. DEFAULT=1
-q, --quality=<flt> Thumbnail quality, on a scale of 1.0 to 31.0, 1.0 being the best. DEFAULT=5
--size=<int> Thumbnail size, in pixels. Use negative value to disable. DEFAULT=500
--content-size=<int> Number of bytes to be extracted from text documents. Use negative value to disable. DEFAULT=32768
--incremental=<str> Reuse an existing index and only scan modified files.
-o, --output=<str> Output directory. DEFAULT=index.sist2/
--rewrite-url=<str> Serve files from this url instead of from disk.
--name=<str> Index display name. DEFAULT: (name of the directory)
--depth=<int> Scan up to DEPTH subdirectories deep. Use 0 to only scan files in PATH. DEFAULT: -1
--archive=<str> Archive file mode (skip|list|shallow|recurse). skip: Don't parse, list: only get file names as text, shallow: Don't parse archives inside archives. DEFAULT: recurse
--ocr=<str> Tesseract language (use tesseract --list-langs to see which are installed on your machine)
-e, --exclude=<str> Files that match this regex will not be scanned
--fast Only index file names & mime type
Index options
--es-url=<str> Elasticsearch url with port. DEFAULT=http://localhost:9200
-p, --print Just print JSON documents to stdout.
--script-file=<str> Path to user script.
--batch-size=<int> Index batch size. DEFAULT: 100
-f, --force-reset Reset Elasticsearch mappings and settings. (You must use this option the first time you use the index command)
Web options
--es-url=<str> Elasticsearch url. DEFAULT=http://localhost:9200
--bind=<str> Listen on this address. DEFAULT=localhost
--port=<str> Listen on this port. DEFAULT=4090
--auth=<str> Basic auth in user:password format
Made by simon987 <me@simon987.net>. Released under GPL-3.0
```
## Scan
### Scan options
* `-t, --threads`
Number of threads for file parsing. **Do not set a number higher than `$(nproc)`!**.
* `-q, --quality`
Thumbnail quality, on a scale of 1.0 to 31.0, 1.0 being the best. *Does not affect PDF thumbnails quality*
* `--size`
Thumbnail size in pixels.
* `--content-size`
Number of bytes of text to be extracted from the content of files (plain text and PDFs).
Repeated whitespace and special characters do not count toward this limit.
* `--incremental`
Specify an existing index. Information about files in this index that were not modified (based on *mtime* attribute)
will be copied to the new index and will not be parsed again.
* `-o, --output` Output directory.
* `--rewrite-url` Set the `rewrite_url` option for the web module (See [rewrite_url](#rewrite_url))
* `--name` Set the `name` option for the web module
* `--depth` Maximum scan dept. Set to 0 only scan files directly in the root directory, set to -1 for infinite depth
* `--archive` Archive file mode.
* skip: Don't parse
* list: Only get file names as text
* shallow: Don't parse archives inside archives.
* recurse: Scan archives recursively (default)
* `--ocr` See [OCR](../README.md#OCR)
* `-e, --exclude` Regex pattern to exclude files. A file is excluded if the pattern matches any
part of the full absolute path.
Examples:
* `-e ".*\.ttf"`: Ignore ttf files
* `-e ".*\.(ttf|rar)"`: Ignore ttf and rar files
* `-e "^/mnt/backups/"`: Ignore all files in the `/mnt/backups/` directory
* `-e "^/mnt/Data[12]/"`: Ignore all files in the `/mnt/Data1/` and `/mnt/Data2/` directory
* `-e "(^/usr/)|(^/var/)|(^/media/DRIVE-A/tmp/)|(^/media/DRIVE-B/Trash/)"` Exclude the
`/usr`, `/var`, `/media/DRIVE-A/tmp`, `/media/DRIVE-B/Trash` directories
* `--fast` Only index file names and mime type
### Scan examples
Simple scan
```bash
sist2 scan ~/Documents
sist2 scan \
--threads 4 --content-size 16000000 --quality 1.0 --archive shallow \
--name "My Documents" --rewrite-url "http://nas.domain.local/My Documents/" \
~/Documents -o ./documents.idx/
```
Incremental scan
```
sist2 scan --incremental ./orig_idx/ -o ./updated_idx/ ~/Documents
```
### Index format
A typical `binary` type index structure looks like this:
```
documents.idx/
├── descriptor.json
├── _index_139965416830720
├── _index_139965425223424
├── _index_139965433616128
├── _index_139965442008832
└── thumbs
├── data.mdb
└── lock.mdb
```
The `_index_*` files contain the raw binary index data and are not meant to be
read by other applications. The format is generally compatible across different
sist2 versions.
The `thumbs/` folder is a [LMDB](https://en.wikipedia.org/wiki/Lightning_Memory-Mapped_Database)
database containing the thumbnails.
The `descriptor.json` file contains general information about the index. The
following fields are safe to modify manually: `root`, `name`, [rewrite_url](#rewrite_url) and `timestamp`.
*Advanced usage*
Instead of using the `scan` module, you can also import an index generated
by a third party application. The 'external' index must have the following format:
```
my_index/
├── descriptor.json
├── _index_0
└── thumbs
├── data.mdb
└── lock.mdb
```
*descriptor.json*:
```json
{
"uuid": "<valid UUID4>",
"version": "_external_v1",
"root": "(optional)",
"name": "<name>",
"rewrite_url": "(optional)",
"type": "json",
"timestamp": 1578971024
}
```
*_index_0*: NDJSON format (One json object per line)
```json
{
"_id": "unique uuid for the file",
"index": "index uuid4 (same one as descriptor.json!)",
"mime": "application/x-cbz",
"size": 14341204,
"mtime": 1578882996,
"extension": "cbz",
"name": "my_book",
"path": "path/to/books",
"content": "text contents of the book",
"title": "Title of the book",
"tag": ["genre.fiction", "author.someguy", "etc..."],
"_keyword": [
{"k": "ISBN", "v": "ABCD34789231"}
],
"_text": [
{"k": "other", "v": "This will be indexed as text"}
]
}
```
You can find the full list of supported fields [here](../src/io/serialize.c#L90)
The `_keyword.*` items will be indexed and searchable as **keyword** fields (only full matches allowed).
The `_text.*` items will be indexed and searchable as **text** fields (fuzzy searching allowed)
*thumbs/*:
LMDB key-value store. Keys are **binary** 128-bit UUID4s (`_id` field)
and values are raw image bytes.
Importing an external `binary` type index is technically possible but
it is currently unsupported and has no guaranties of back/forward compatibility.
## Index
### Index options
* `--es-url`
Elasticsearch url and port. If you are using docker, make sure that both containers are on the
same network.
* `-p, --print`
Print index in JSON format to stdout.
* `--script-file`
Path to user script. See [Scripting](scripting/README.md).
* `--batch-size=<int>`
Index batch size. Indexing is generally faster with larger batches, but payloads that
are too large will fail and additional overhead for retrying with smaller sizes may slow
down the process.
* `-f, --force-reset`
Reset Elasticsearch mappings and settings.
**(You must use this option the first time you use the index command)**.
### Index examples
**Push to elasticsearch**
```bash
sist2 index --force-reset --batch-size 1000 --es-url http://localhost:9200 ./my_index/
sist2 index ./my_index/
```
**Save index in JSON format**
```bash
sist2 index --print ./my_index/ > my_index.ndjson
```
**Inspect contents of an index**
```bash
sist2 index --print ./my_index/ | jq | less
```
## Web
### Web options
* `--es-url=<str>` Elasticsearch url.
* `--bind=<str>` Listen on this address.
* `--port=<str>` Listen on this port.
* `--auth=<str>` Basic auth in user:password format
### Web examples
**Single index**
```bash
sist2 web --auth admin:hunter2 --bind 0.0.0.0 --port 8888 my_index
```
**Multiple indices**
```bash
# Indices will be displayed in this order in the web interface
sist2 web index1 index2 index3 index4
```
### rewrite_url
When the `rewrite_url` field is not empty, the web module ignores the `root`
field and will return a HTTP redirect to `<rewrite_url><path>/<name><extension>`
instead of serving the file from disk.
Both the `root` and `rewrite_url` fields are safe to manually modify from the
`descriptor.json` file.
### Link to specific indices
To link to specific indices, you can add a list of comma-separated index name to
the URL: `?i=<name>,<name>`. By default, indices with `"(nsfw)"` in their name are
not displayed.

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## User scripts
*This document is under construction, more in-depth guide coming soon*
During the `index` step, you can use the `--script-file <script>` option to
modify documents or add user tags. This option is mainly used to
implement automatic tagging based on file attributes.
The scripting language used
([Painless Scripting Language](https://www.elastic.co/guide/en/elasticsearch/painless/7.4/index.html))
is very similar to Java, but you should be able to create user scripts
without programming experience at all if you're somewhat familiar with
regex.
This is the base structure of the documents we're working with:
```json
{
"_id": "e171405c-fdb5-4feb-bb32-82637bc32084",
"_index": "sist2",
"_type": "_doc",
"_source": {
"index": "206b3050-e821-421a-891d-12fcf6c2db0d",
"mime": "application/json",
"size": 1799,
"mtime": 1545443685,
"extension": "md",
"name": "README",
"path": "sist2/scripting",
"content": "..."
}
}
```
**Example script**
This script checks if the `genre` attribute exists, if it does
it adds the `genre.<genre>` tag.
```Java
ArrayList tags = ctx._source.tag = new ArrayList();
if (ctx._source?.genre != null) {
tags.add("genre." + ctx._source.genre.toLowerCase())
}
```
You can use `.` to create a hierarchical tag tree:
![scripting/genre_example](genre_example.png)
To use regular expressions, you need to add this line in `/etc/elasticsearch/elasticsearch.yml`
```yaml
script.painless.regex.enabled: true
```
Or, if you're using docker add `-e "script.painless.regex.enabled=true"`
**Tag color**
You can specify the color for an individual tag by appending an
hexadecimal color code (`#RRGGBBAA`) to the tag name.
### Examples
If `(20XX)` is in the file name, add the `year.<year>` tag:
```Java
ArrayList tags = ctx._source.tag = new ArrayList();
Matcher m = /[\(\.+](20[0-9]{2})[\)\.+]/.matcher(ctx._source.name);
if (m.find()) {
tags.add("year." + m.group(1))
}
```
Use default *Calibre* folder structure to infer author.
```Java
ArrayList tags = ctx._source.tag = new ArrayList();
// We expect the book path to look like this:
// /path/to/Calibre Library/Author/Title/Title - Author.pdf
if (ctx._source.name.contains("-") && ctx._source.extension == "pdf") {
String[] names = ctx._source.name.splitOnToken('-');
tags.add("author." + names[1].strip());
}
```
If the file matches a specific pattern `AAAA-000 fName1 lName1, <fName2 lName2>...`, add the `actress.<actress>` and
`studio.<studio>` tag:
```Java
ArrayList tags = ctx._source.tag = new ArrayList();
Matcher m = /([A-Z]{4})-[0-9]{3} (.*)/.matcher(ctx._source.name);
if (m.find()) {
tags.add("studio." + m.group(1));
// Take the matched group (.*), and add a tag for
// each name, separated by comma
for (String name : m.group(2).splitOnToken(',')) {
tags.add("actress." + name);
}
}
```
Set the name of the last folder (`/path/to/<studio>/file.mp4`) to `studio.<studio>` tag
```Java
ArrayList tags = ctx._source.tag = new ArrayList();
if (ctx._source.path != "") {
String[] names = ctx._source.path.splitOnToken('/');
tags.add("studio." + names[names.length-1]);
}
```
Set the name of the last folder (`/path/to/<studio>/file.mp4`) to `studio.<studio>` tag
```Java
ArrayList tags = ctx._source.tag = new ArrayList();
if (ctx._source.path != "") {
String[] names = ctx._source.path.splitOnToken('/');
tags.add("studio." + names[names.length-1]);
}
```
Parse `EXIF:F Number` tag
```Java
if (ctx._source?.exif_fnumber != null) {
String[] values = ctx._source.exif_fnumber.splitOnToken(' ');
String aperture = String.valueOf(Float.parseFloat(values[0]) / Float.parseFloat(values[1]));
if (aperture == "NaN") {
aperture = "0,0";
}
tags.add("Aperture.f/" + aperture.replace(".", ","));
}
```
Display year and months from `EXIF:DateTime` tag
```Java
if (ctx._source?.exif_datetime != null) {
SimpleDateFormat parser = new SimpleDateFormat("yyyy:MM:dd HH:mm:ss");
Date date = parser.parse(ctx._source.exif_datetime);
SimpleDateFormat yp = new SimpleDateFormat("yyyy");
SimpleDateFormat mp = new SimpleDateFormat("MMMMMMMMM");
String year = yp.format(date);
String month = mp.format(date);
tags.add("Month." + month);
tags.add("Year." + year);
}
```

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