- Quota support: accounts can have individual quota expressed as max number of files and max total size
- Bandwidth throttling is supported, with distinct settings for upload and download
- Per user maximum concurrent sessions
- Per user permissions: list directories content, upload, download, delete, rename, create directories, create symlinks can be enabled or disabled
- Per user files/folders ownership: you can map all the users to the system account that runs SFTPGo (all platforms are supported) or you can run SFTPGo as root user and map each user or group of users to a different system account (*NIX only)
Simple install the package to your [$GOPATH](https://github.com/golang/go/wiki/GOPATH "GOPATH") with the [go tool](https://golang.org/cmd/go/ "go command") from shell:
```bash
$ go get -u github.com/drakkan/sftpgo
```
Make sure [Git is installed](https://git-scm.com/downloads) on your machine and in your system's `PATH`.
A systemd sample [service](https://github.com/drakkan/sftpgo/tree/master/init/sftpgo.service "systemd service") can be found inside the source tree.
The `sftpgo` executable supports the following command line flags:
-`-config-dir` string. Location of the config dir. This directory should contain the `sftpgo.conf` configuration file, the private key for the SFTP server (`id_rsa` file) and the SQLite database if you use SQLite as data provider. The server private key will be autogenerated if the user that executes SFTPGo has write access to the config-dir. The default value is "."
-`-log-file-path` string. Location for the log file, default "sftpgo.log"
Sample SQL scripts to create the required database structure can be found insite the source tree [sql](https://github.com/drakkan/sftpgo/tree/master/sql "sql") directory. The SQL scripts filename's is, by convention, the date as `YYYYMMDD` and the suffix `.sql`. You need to apply all the SQL scripts for your database ordered by name, for example `20190706.sql` must be applied before `20190728.sql` and so on.
-`max_auth_tries` integer. Maximum number of authentication attempts permitted per connection. If set to a negative number, the number of attempts are unlimited. If set to zero, the number of attempts are limited to 6.
-`execute_on`, list of strings. Valid values are `download`, `upload`, `delete`, `rename`. On folder deletion a `delete` notification will be sent for each deleted file. Leave empty to disable actions.
-`command`, string. Absolute path to the command to execute. Leave empty to disable. The command is invoked with the following arguments:
-`action`, any valid `execute_on` string
-`username`, user who did the action
-`path` to the affected file. For `rename` action this is the old file name
-`target_path`, non empty for `rename` action, this is the new file name
-`http_notification_url`, a valid URL. An HTTP GET request will be executed to this URL. Leave empty to disable. The query string will contain the following parameters that have the same meaning of the command's arguments:
-`name`, string. Database name. For driver `sqlite` this can be the database name relative to the config dir or the absolute path to the SQLite database.
-`host`, string. Database host. Leave empty for driver `sqlite`
-`port`, integer. Database port. Leave empty for driver `sqlite`
-`username`, string. Database user. Leave empty for driver `sqlite`
-`password`, string. Database password. Leave empty for driver `sqlite`
-`sslmode`, integer. Used for drivers `mysql` and `postgresql`. 0 disable SSL/TLS connections, 1 require ssl, 2 set ssl mode to `verify-ca` for driver `postgresql` and `skip-verify` for driver `mysql`, 3 set ssl mode to `verify-full` for driver `postgresql` and `preferred` for driver `mysql`
-`connectionstring`, string. Provide a custom database connection string. If not empty this connection string will be used instead of build one using the previous parameters
-`users_table`, string. Database table for SFTP users
-`manage_users`, integer. Set to 0 to disable users management, 1 to enable
- 2, quota is updated each time a user upload or delete a file but only for users with quota restrictions. With this configuration the "quota scan" REST API can still be used to periodically update space usage for users without quota restrictions
-`password` used for password authentication. For users created using SFTPGo REST API the password will be stored using argon2id hashing algo. SFTPGo supports checking passwords stored with bcrypt too. Currently, as fallback, there is a clear text password checking but you should not store passwords as clear text and this support could be removed at any time, so please don't depend on it.
-`public_key` used for public key authentication. At least one between password and public key is mandatory. Multiple public keys are supported, newline delimited (unix line break unescaped).
-`uid`, `gid`. If sftpgo runs as root system user then the created files and directories will be assigned to this system uid/gid. Ignored on windows and if sftpgo runs as non root user: in this case files and directories for all SFTP users will be owned by the system user that runs sftpgo.
These properties are stored inside the data provider. If you want to use your existing accounts, you can create a database view. Since a view is read only, you have to disable user management and quota tracking so sftpgo will never try to write to the view.
SFTPGo exposes REST API to manage users and quota and to get real time reports for the active connections with possibility of forcibly closing a connection.
If quota tracking is enabled in `sftpgo.conf` configuration file, then the used size and number of files are updated each time a file is added/removed. If files are added/removed not using SFTP or if you change `track_quota` from `2` to `1`, you can rescan the user home dir and update the used quota using the REST API.
REST API is designed to run on localhost or on a trusted network, if you need https or authentication you can setup a reverse proxy using an HTTP Server such as Apache or NGNIX.
The OpenAPI 3 schema for the exposed API can be found inside the source tree: [openapi.yaml](https://github.com/drakkan/sftpgo/tree/master/api/schema/openapi.yaml "OpenAPI 3 specs").
## Logs
Inside the log file each line is a JSON struct, each struct has a `sender` fields that identify the log type.
The logs can be divided into the following categories:
- **"app logs"**, internal logs used to debug `sftpgo`:
-`sender` string. This is generally the package name that emits the log
-`time` string. Date/time with millisecond precision
-`level` string
-`message` string
- **"transfer logs"**, SFTP transfer logs:
-`sender` string. `SFTPUpload` or `SFTPDownload`
-`time` string. Date/time with millisecond precision
-`level` string
-`elapsed_ms`, int64. Elapsed time, as milliseconds, for the upload/download
-`size_bytes`, int64. Size, as bytes, of the download/upload
