Merge branch 'master' into 1916-remove-select-language-from-register-form

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@ -9,21 +9,26 @@ The Corona crisis has fundamentally changed our world within a very short time.
The dominant financial system threatens to fail around the globe, followed by mass insolvencies, record unemployment and abject poverty. Only with a sustainable new monetary system can humanity master these challenges of the 21st century. The Gradido Academy for Bionic Economy has developed such a system.
Find out more about the Project on its [Website](https://gradido.net/). It is offering vast resources about the idea. The remaining document will discuss the gradido software only.
## Software requirements
Currently we only support `docker` install instructions to run all services, since many different programming languages and frameworks are used.
- [docker](https://www.docker.com/)
- [docker](https://www.docker.com/)
- [docker-compose]
- [yarn](https://phoenixnap.com/kb/yarn-windows)
### For Arch Linux
Install the required packages:
```bash
sudo pacman -S docker
sudo pacman -S docker-compose
```
Add group `docker` and then your user to it in order to allow you to run docker without sudo
Add group `docker` and then your user to it in order to allow you to run docker without sudo
```bash
sudo groupadd docker # may already exist `groupadd: group 'docker' already exists`
sudo usermod -aG docker $USER
@ -31,26 +36,58 @@ groups # verify you have the group (requires relog)
```
Start the docker service:
```bash
sudo systemctrl start docker
```
### For Windows
#### docker
The installation of dockers depends on your selected product package from the [dockers page](https://www.docker.com/). For windows the product *docker desktop* will be the choice. Please follow the installation instruction of your selected product.
##### known problems
* In case the docker desktop will not start correctly because of previous docker installations, then please clean the used directories of previous docker installation - `C:\Users` - before you retry starting docker desktop. For further problems executing docker desktop please take a look in this description "[logs and trouble shooting](https://docs.docker.com/desktop/windows/troubleshoot/)"
* In case your docker desktop installation causes high memory consumption per vmmem process, then please take a look at this description "[vmmen process consuming too much memory (Docker Desktop)](https://dev.to/tallesl/vmmen-process-consuming-too-much-memory-docker-desktop-273p)"
#### yarn
For the Gradido build process the yarn package manager will be used. Please download and install [yarn for windows](https://phoenixnap.com/kb/yarn-windows) by following the instructions there.
## How to run?
As soon as the software requirements are fulfilled and a docker installation is up and running then open a powershell on Windows or an other commandline prompt on Linux.
Create and navigate to the directory, where you want to create the Gradido runtime environment.
```
mkdir \Gradido
cd \Gradido
```
### 1. Clone Sources
Clone the repo and pull all submodules
```bash
git clone git@github.com:gradido/gradido.git
git submodule update --recursive --init
```
### 2. Run docker-compose
Run docker-compose to bring up the development environment
Run docker-compose to bring up the development environment
```bash
docker-compose up
```
### Additional Build options
If you want to build for production you can do this aswell:
```bash
docker-compose -f docker-compose.yml up
```
@ -73,6 +110,7 @@ A release is tagged on Github by its version number and published as github rele
Each release is accompanied with release notes automatically generated from the git log which is available as [CHANGELOG.md](./CHANGELOG.md).
To generate the Changelog and set a new Version you should use the following commands in the main folder
```bash
git fetch --all
yarn release
@ -85,10 +123,10 @@ Note: The Changelog will be regenerated with all tags on release on the external
## Troubleshooting
| Problem | Issue | Solution | Description |
| ------- | ----- | -------- | ----------- |
| Problem | Issue | Solution | Description |
| ------------------------------------------------ | ---------------------------------------------------- | ----------------------------------------------------------------------------- | --------------------------------------------------------------------------- |
| docker-compose raises database connection errors | [#1062](https://github.com/gradido/gradido/issues/1062) | End `ctrl+c` and restart the `docker-compose up` after a successful build | Several Database connection related errors occur in the docker-compose log. |
| Wallet page is empty | [#1063](https://github.com/gradido/gradido/issues/1063) | Accept Cookies and Local Storage in your Browser | The page stays empty when navigating to [http://localhost/](http://localhost/) |
| Wallet page is empty | [#1063](https://github.com/gradido/gradido/issues/1063) | Accept Cookies and Local Storage in your Browser | The page stays empty when navigating to[http://localhost/](http://localhost/) |
## Useful Links

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@ -0,0 +1,81 @@
# Business Event Protocol
With the business event protocol the gradido application will capture and persist business information for future reports and statistics. The idea is to design and implement general functionality to capture and store business events. Each business event will be defined as a separate event type with its own business attributes. Each event type extends a basic event type to ensure a type safetiness with its mandatory and optional attributes.
## EventType - Enum
The different event types will be defined as Enum. The following list is a first draft and will grow with further event types in the future.
| EventType | Value | Description |
| --------------------------- | ----- | ---------------------------------------------------------------------------------------------------- |
| BasicEvent | 0 | the basic event is the root of all further extending event types |
| VisitGradidoEvent | 10 | if a user visits a gradido page without login or register |
| RegisterEvent | 20 | the user presses the register button |
| RedeemRegisterEvent | 21 | the user presses the register button initiated by the redeem link |
| InActiveAccountEvent | 22 | the systems create an inactive account during the register process |
| SendConfirmEmailEvent | 23 | the system send a confirmation email to the user during the register process |
| ConfirmEmailEvent | 24 | the user confirms his email during the register process |
| RegisterEmailKlickTippEvent | 25 | the system registers the confirmed email at klicktipp |
| LoginEvent | 30 | the user presses the login button |
| RedeemLoginEvent | 31 | the user presses the login button initiated by the redeem link |
| ActivateAccountEvent | 32 | the system activates the users account during the first login process |
| PasswordChangeEvent | 33 | the user changes his password |
| TxSendEvent | 40 | the user creates a transaction and sends it online |
| TxSendRedeemEvent | 41 | the user creates a transaction and sends it per redeem link |
| TxRepeateRedeemEvent | 42 | the user recreates a redeem link of a still open transaction |
| TxCreationEvent | 50 | the user receives a creation transaction for his confirmed contribution |
| TxReceiveEvent | 51 | the user receives a transaction from an other user and posts the amount on his account |
| TxReceiveRedeemEvent | 52 | the user activates the redeem link and receives the transaction and posts the amount on his account |
| ContribCreateEvent | 60 | the user enters his contribution and asks for confirmation |
| ContribConfirmEvent | 61 | the user confirms a contribution of an other user (for future multi confirmation from several users) |
| | | |
## EventProtocol - Entity
The business events will be stored in database in the new table `EventProtocol`. The tabel will have the following attributes:
| Attribute | Type | Description |
| ------------- | --------- | ------------------------------------------------------------------------------------------------ |
| id | int | technical unique key (from db sequence) |
| type | enum | type of event |
| createdAt | timestamp | timestamp the event occurs (not the time of writing) |
| userID | string | the user ID, who invokes the event |
| XuserID | string | the cross user ID, who is involved in the process like a tx-sender, contrib-receiver, ... |
| XcommunityID | string | the cross community ID, which is involved in the process like a tx-sender, contrib-receiver, ... |
| transactionID | int | the technical key of the transaction, which triggers the event |
| contribID | int | the technical key of the contribution, which triggers the event |
| amount | digital | the amount of gradido transferred by transaction, creation or redeem |
## Event Types
The following table lists for each event type the mandatory attributes, which have to be initialized at event occurence and to be written in the database event protocol table:
| EventType | id | type | createdAt | userID | XuserID | XCommunityID | transactionID | contribID | amount |
| :-------------------------- | :-: | :--: | :-------: | :----: | :-----: | :----------: | :-----------: | :-------: | :----: |
| BasicEvent | x | x | x | | | | | | |
| VisitGradidoEvent | x | x | x | | | | | | |
| RegisterEvent | x | x | x | x | | | | | |
| RedeemRegisterEvent | x | x | x | x | | | | | |
| InActiveAccountEvent | x | x | x | x | | | | | |
| SendConfirmEmailEvent | x | x | x | x | | | | | |
| ConfirmEmailEvent | x | x | x | x | | | | | |
| RegisterEmailKlickTippEvent | x | x | x | x | | | | | |
| LoginEvent | x | x | x | x | | | | | |
| RedeemLoginEvent | x | x | x | x | | | | | |
| ActivateAccountEvent | x | x | x | x | | | | | |
| PasswordChangeEvent | x | x | x | x | | | | | |
| TxSendEvent | x | x | x | x | x | x | x | | x |
| TxSendRedeemEvent | x | x | x | x | x | x | x | | x |
| TxRepeateRedeemEvent | x | x | x | x | x | x | x | | x |
| TxCreationEvent | x | x | x | x | | | x | | x |
| TxReceiveEvent | x | x | x | x | x | x | x | | x |
| TxReceiveRedeemEvent | x | x | x | x | x | x | x | | x |
| ContribCreateEvent | x | x | x | x | | | | x | |
| ContribConfirmEvent | x | x | x | x | x | x | | x | |
| | | | | | | | | | |
## Event creation
The business logic needs a *general event creation* service/methode, which accepts as input one of the predefined event type objects. An event object have to be initialized with its mandatory attributes before it can be given as input parameters for event creation. The service maps the event object attributes to the database entity and writes a new entry in the `EventProtocol `table.
At each specific location of the gradido business logic an event creation invocation has to be introduced manually, which matches the corresponding event type - see [EventType-Enum](#EventType-Enum) above.

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@ -1,8 +1,10 @@
# Federation
This document contains the concept and technical details for the *federation* of gradido communities. It base on the [ActivityPub specification](https://www.w3.org/TR/activitypub/ " ") and is extended for the gradido requirements.
This document contains the concept and technical details for the *federation* of gradido communities. The first idea of federation was to base on the [ActivityPub specification](https://www.w3.org/TR/activitypub/ " ") and extend it for the gradido requirements.
## ActivityPub
But meanwhile the usage of a DHT like HyperSwarm promises more coverage of the gradido requirements out of the box. More details about HyperSwarm can be found here [@hyperswarm/dht](https://github.com/hyperswarm/dht).
## ActivityPub (deprecated)
The activity pub defines a server-to-server federation protocol to share information between decentralized instances and will be the main komponent for the gradido community federation.
@ -25,8 +27,387 @@ The Variant A with an internal server contains the benefit to be as independent
The Varaint B with an external server contains the benefit to reduce the implementation efforts and the responsibility for an own ActivitPub-Server. But it will cause an additional dependency to a third party service provider and the growing hosting costs.
## HyperSwarm
The decision to switch from ActivityPub to HyperSwarm base on the arguments, that the *hyperswarm/dht* library will satify the most federation requirements out of the box. It is now to design the business requirements of the [gradido community communication](../BusinessRequirements/CommunityVerwaltung.md#UC-createCommunity) in a technical conception.
## ActivityStream
The challenge for the decentralized communities of gradido will be *how to become a new community aquainted with an existing community* ?
An ActivityStream includes all definitions and terms needed for community activities and content flow around the gradido community network.
To enable such a relationship between an existing community and a new community several stages has to run through:
1. Federation
* join&connect
* direct exchange
2. Authentication
3. Autorized Communication
### Overview
At first the following diagramm gives an overview of the three stages and shows the handshake between an existing community-A and a new created community-B including the data exchange for buildup such a federated, authenticated and autorized relationship.
![FederationHyperSwarm.png](./image/FederationHyperSwarm.png)
### Prerequisits
Before starting in describing the details of the federation handshake, some prerequisits have to be defined.
#### Database
With the federation additional data tables/entities have to be created.
##### Community-Entity
Create the new *Community* table to store attributes of the own community. This table is used more like a frame for own community data in the future like the list of federated foreign communities, own users, own futher accounts like AUF- and Welfare-account and the profile data of the own community:
| Attributes | Type | Description |
| ----------- | ------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------- |
| id | int | technical unique key of this entity |
| uuid | string | unique key for a community, which will never changed as long as the community exists |
| name | string | name of the community shown on UI e.g for selection of a community |
| description | string | description of the community shown on UI to present more community details |
| ... | | for the near future additional attributes like profile-info, trading-level, set-of-rights,... will follow with the next level of Multi-Community Readyness |
##### CommunityFederation-Entity
Create the new *CommunityFederation* table to store at this point of time only the attributes used by the federation handshake:
| Attributes | Type | Description |
| ---------------- | --------- | ------------------------------------------------------------------------------------------------------ |
| id | int | technical unique key of this entity |
| uuid | string | unique key for a community, which will never changed as long as the community exists |
| foreign | boolean | flag to mark the entry as a foreign or own community entry |
| createdAt | timestamp | the timestamp the community entry was created |
| privateKey | string | the private key of the community for asynchron encryption (only set for the own community) |
| pubKey | string | the public key of the community for asynchron encryption |
| pubKeyVerifiedAt | timestamp | the timestamp the pubkey of this foreign community is verified (for the own community its always null) |
| authenticatedAt | timestamp | the timestamp of the last successfull authentication with this foreign community |
| | | for the near future additional attributes will follow with the next level of Multi-Community Readyness |
##### CommunityApiVersion-Entity
Create the new *CommunityApiVersion* table to support several urls and apiversion of one community at once. It references the table *CommunityFederation* with the foreignkey *communityFederationID* (naming pattern foreignkea = `<referred entityname>ID`) for a 1:n relationship
| Attributes | Type | Description |
| --------------------- | --------- | ------------------------------------------------------------------------------------------------------------------ |
| id | int | technical unique key of this entity |
| communityFederationID | int | the technical foreign key to the community entity |
| url | string | the URL the community will provide its services, could be changed during lifetime of the community |
| apiversion | string | the API version the community will provide its services, will increase with each release |
| validFrom | timestamp | the timestamp as of the url and api are provided by the community |
| verifiedAt | timestamp | the timestamp the url and apiversion of this foreign community is verified (for the own community its always null) |
#### Configuration
The preparation of a community infrastructure needs some application-outside configuration, which will be read during the start phase of the gradido components. The configuration will be defined in a file based manner like key-value-pairs as properties or in a structured way like xml or json files.
| Key | Value | Default-Value | Description |
| ----------------------------------------------- | :------------------------------------ | --------------------- | ------------------------------------------------------------------------------------------------- |
| stage.name | dev<br />stage1<br />stage2<br />prod | dev | defines the name of the stage this instance will serve |
| stage.host | | | the name of the host or ip this instance will run |
| stage.mode | test<br />prod | test | the running mode this instance will work |
| federation.communityname | | Gradido-Akademie | the name of this community |
| federation.apiversion | `<versionNr>` | current 1.7 | defines the current api version this instance will provide its services |
| federation.apiversion.`<versionNr>.`url | | <br />gdd.gradido.net | <br />defines the url on which this instance of a community will provide its services |
| federation.apiversion.`<versionNr>.`validFrom | | | defines the timestamp the apiversion is or will be valid |
| federation.dhtnode.topic | | dht_gradido_topic | defines the name of the federation topic, which is used to join and connect as federation-channel |
| federation.dhtnode.host | | | defines the host where the DHT-Node is hosted, if outside apollo |
| federation.dhtnode.port | | | defines the port on which the DHT-node will provide its services, if outside apollo |
#### 1st Start of a community
The first time a new community infrastructure on a server is started, the start-phase has to check and prepair the own community database for federation. That means the application has to read the configuration and check against the database, if all current configured data is propagated in the database especially in the *CommunityXXX* entities.
* check if the*Community* table is empty or if an exisiting community entry is not equals the configured values, then update as follows:
* community.id = next sequence value
* community.uuid = generated UUID (version 4)
* community.name = Configuration.federation.communityname
* community.description = null
* prepare the *CommunityFederation* table
* communityFederation.id = next sequence value
* communityFederation.uuid = community.uuid
* communityFederation.foreign = FALSE
* communityFederation.createdAt = NOW
* communityFederation.privateKey = null
* communityFederation.pubKey = null
* communityFederation.pubKeyVerifiedAt = null
* communityFederation.authenticatedAt = null
* prepare the *CommunityApiVersion* table with all configured apiversions:
* communityApiVersion.id = next sequence value
* communityApiVersion.communityFederationID = communityFederation.id
* communityApiVersion.url = Configuration.federation.apiversion.`<versionNr>`.url
* communityApiVersion.apiversion = Configuration.federation.apiversion
* communityApiVersion.validFrom = Configuration.federation.apiversion.`<versionNr>`.validFrom
* communityApiVersion.verifiedAt = null
### Stage1 - Federation
For the 1st stage the *hyperswarm dht library* will be used. It supports an easy way to connect a new community with other existing communities. As shown in the picture above the *hyperswarm dht library* will be part of the component *DHT-Node* separated from the *apollo server* component. The background for this separation is to keep off the federation activity from the business processes or to enable component specific scaling in the future. In consequence for the inter-component communication between *DHT-Node*, *apollo server* and other components like *database* the interface and security has to be defined during development on using technical standards.
For the first federation release the *DHT-Node* will be part of the *apollo server*, but internally designed and implemented as a logical saparated component.
#### Sequence join&connect
1. In the own database of community_A the entites *Community*, *CommunityFederation* and *CommunityApiVersion* are initialized
2. When starting the *DHT-Node* of community_A it search per *apollo-ORM* for the own community entry and check on existing keypair *CommunityFederation.pubKey* and *CommunityFederation.privateKey* in the database. If they not exist, the *DHT-Node* generates the keypair *pubkey* and *privatekey* and writes them per *apollo-ORM* in the database
3. For joining with the correct channel of *hyperswarm dht* a topic has to be used. The *DHT-Node* reads the configured value of the property *federation.dhtnode.topic*.
4. with the *CommunityFederation.pubKey* and the *federation.dhtnode.topic* the *DHT-Node* joins the *hyperswarm dht* and listen for other *DHT-nodes* on the topic.
5. As soon as a the *hyperswarm dht* notifies an additional node in the topic, the *DHT-node* reads the *pubKey* of this additional node and search it per *apollo-ORM* in the *CommunityFederation* table by filtering with *CommunityFederation.foreign* = TRUE
6. if an entry with the C*ommunityFederation.pubKey* of the foreign node still exists and the *CommunityFederation.pubKeyVerifiedAt* is not NULL both the *DHT-node* and the foreign node had pass through the federation process before. Nevertheless the following steps and stages have to be processed for updating e.g the api versions or other meanwhile changed date.
7. if an entry with the *CommunityFederation.pubKey* of the additional node can't be found, the *DHT-Node* starts with the next step *direct exchange* of the federation handshake anyway.
#### Sequence direct exchange
1. if the *CommunityFederation.pubKey* of the additional node does not exists in the *CommunityFederation* table the *DHT-node* starts a *direct exchange* with this foreign node to gets the data the first time, otherwise to update previous exchanged data.
2. the *DHT-node* opens a direct connection per *hyperswarm* with the additional node and exchange respectively the *url* and *apiversion* between each other.
1. to support the future feature that one community can provide several urls and apiversion at once the exchanged data should be in a format, which can represent structured information, like JSON (or simply CSV - feel free how to implement, but be aware about security aspects to avoid possible attacks during parsing the exchanged data and the used parsers for it)
```
{
"API":
{
"url" : "comB.com",
"version" : "1.0",
"validFrom" : "2022.01.01"
}
"API" :
{
"url" : "comB.com",
"version" : "1.1",
"validFrom" : "2022.04.15"
}
"API" :
{
"url" : "comB.de",
"version" : "2.0",
"validFrom" : "2022.06.01"
}
}
```
2. the *DHT-Node* writes per *apollo-ORM* the received and parsed data from the foreign node in the database
1. For the future an optimization step will be introduced here to avoid possible attacks of a foreign node by polute our database with mass of data.
1. before the *apollo-ORM* writes the data in the database, the *apollo-graphQL* invokes for all received urls and apiversions at the foreign node the request https.//`<url>/<apiversion>/getPubKey()`.
2. Normally the foreign node will response in a very short time with its publicKey, because there will be nothing to en- or decrypt or other complex processing steps.
3. if such a request runs in a timeout anyhow, the previous exchanged data with the foreign node will be almost certainly a fake and can be refused without storing in database. Break the further federation processing steps and stages and return back to stage1 join&connect.
4. if the response is in time the received publicKey must be equals with the pubKey of the foreign node the *DHT-Node* gets from *hyperswarm dht* per topic during the join&connect stage before
5. if both keys are the same, the writing of the exchanged data per *apollo-ORM* can go on.
6. if both keys will not match the exchanged data during the direct connection will be almost certainly a fake and can be refused without storing in database. Break the further federation processing steps and stages and return back to stage1 join&connect.
2. the *apollo-ORM* inserts / updates or deletes the received data as follow
* insert/update in the *CommunityFederation* table for this foreign node:
| Column | insert | update |
| ------------------------------------ | -------------------- | :------------------ |
| communityFederation.id | next sequence value | keep existing value |
| communityFederation.uuid | null | keep existing value |
| communityFederation.foreign | TRUE | keep existing value |
| communityFederation.createdAt | NOW | keep existing value |
| communityFederation.privateKey | null | keep existing value |
| communityFederation.pubKey | exchangedData.pubKey | keep existing value |
| communityFederation.pubKeyVerifiedAt | null | keep existing value |
| communityFederation.authenticatedAt | null | keep existing value |
* for each exchangedData API
if API not exists in database then insert in the *CommunityApiVersion* table:
| Column | insert |
| ----------------------------------------- | --------------------------- |
| communityApiVersion.id | next sequence value |
| communityApiVersion.communityFederationID | communityFederation.id |
| communityApiVersion.url | exchangedData.API.url |
| communityApiVersion.apiversion | exchangedData.API.version |
| communityApiVersion.validFrom | exchangedData.API.validFrom |
| communityApiVersion.verifiedAt | null |
if API exists in database but was not part of the last data exchange, then delete it from the *CommunityApiVersion* table
if API exists in database and was part of the last data exchange, then update it in the *CommunityApiVersion* table
| Column | update |
| ----------------------------------------- | --------------------------- |
| communityApiVersion.id | keep existing value |
| communityApiVersion.communityFederationID | keep existing value |
| communityApiVersion.url | keep existing value |
| communityApiVersion.apiversion | keep existing value |
| communityApiVersion.validFrom | exchangedData.API.validFrom |
| communityApiVersion.verifiedAt | keep existing value |
*
3. After all received data is stored successfully, the *DHT-Node* starts the *stage2 - Authentication* of the federation handshake
### Stage2 - Authentication
The 2nd stage of federation is called *authentication*, because during the 1st stage the *hyperswarm dht* only ensures the knowledge that one node is the owner of its keypairs *pubKey* and *privateKey*. The exchanged data between two nodes during the *direct exchange* on the *hyperswarm dht channel* must be verified, means ensure if the proclaimed *url(s)* and *apiversion(s)* of a node is the correct address to reach the same node outside the hyperswarm infrastructure.
As mentioned before the *DHT-node* invokes the *authentication* stage on *apollo server* *graphQL* with the previous stored data of the foreign node.
#### Sequence - view of existing Community
1. the authentication stage starts by reading for the *foreignNode* from the previous federation step all necessary data
1. select with the *foreignNode.pubKey* from the tables *CommunityFederation* and *CommunityApiVersion* where *CommunityApiVersion.validFrom* <= NOW and *CommunityApiVersion.verifiedAt* = null
2. the resultSet will be a list of data with the following attributes
* foreignNode.pubKey
* foreignNode.url
* foreignNode.apiVersion
2. read the own keypair and uuid by `select uuid, privateKey, pubKey from CommunityFederation cf where cf.foreign = FALSE`
3. for each entry of the resultSet from step 1 do
1. encryptedURL = encrypting the *foreignNode.url* and *foreignNode.apiVersion* with the *foreignNode.pubKey*
2. signedAndEncryptedURL = sign the result of the encryption with the own *privateKey*
3. invoke the request `https://<foreignNode.url>/<foreignNode.apiVersion>/openConnection(own.pubKey, signedAndEncryptedURL )`
4. the foreign node will response immediately with an empty response OK, otherwise break the authentication stage with an error
4. the foreign node will process the request on its side - see [description below](#Sequence - view of new Community) - and invokes a redirect request base on the previous exchanged data during stage1 - Federation. This could be more than one redirect request depending on the amount of supported urls and apiversions we propagate to the foreignNode before.
1. if the other community will not react with an `openConnectionRedirect`-request, ther will be an error like missmatching data and the further federation processing will end and go back to join&connect.
5. for each received request `https://<own.url>/<own.apiVersion>/openConnectionRedirect(onetimecode, foreignNode.url, encryptedRedirectURL )` do
1. with the given parameter the following steps will be done
1. search for the *foreignNode.pubKey* by `select cf.pubKey from CommunityApiVersion cav, CommunityFederation cf where cav.url = foreignNode.url and cav.communityFederationID = cf.id`
2. decrypt with the `own.privateKey` the received `encryptedRedirectURL` parameter, which contains a full qualified url inc. apiversion and route
3. verify signature of `encryptedRedirectURL` with the previous found *foreignNode.pubKey* from the own database
4. if the decryption and signature verification are successful then encrypt the *own.uuid* with the *own.privateKey* to *encryptedOwnUUID*
5. invoke the redirect request with https://`<redirect.URL>(onetimecode, encryptedOwnUUID)` and
6. wait for the response with the `encryptedForeignUUID`
7. decrypt the `encrpytedForeignUUID` with the *foreignNode.pubKey*
8. write the encrypted *foreignNode.UUID* in the database by updating the CommunityFederation table per `update CommunityFederation cf set values (cf.uuid = foreignNode.UUID, cf.pubKeyVerifiedAt = NOW) where cf.pubKey = foreignNode.pubkey`
After all redirect requests are process, all relevant authentication data of the new community are well know here and stored in the database.
#### Sequence - view of new Community
This chapter contains the description of the Authentication Stage on the new community side as the request `openConnection(pubKey, signedAndEncryptedURL)`
As soon the *openConnection* request is invoked:
1. decrypted the 2nd `parameter.signedAndEncryptedURL` with the own *privatKey*
2. with the 1st parameter *pubKey* search in the own database `select uuid, url, pubKey from CommunityFederation cf where cf.foreign = TRUE and cf.pubKey = parameter.pubKey`
3. check if the decrypted `parameter.signedAndEncryptedURL` is equals the selected url from the previous selected CommunityFederationEntry
1. if not then break the further processing of this request by only writing an error-log event. There will be no answer to the invoker community, because this community will only go on with a `openConnectionRedirect`-request from this community.
2. if yes then verify the signature of `parameter.signedAndEncryptedURL` with the `cf.pubKey` read in step 2 before
3.
4.
### Stage3 - Autorized Business Communication
ongoing
# Review von Ulf
## Communication concept
The communication happens in 4 stages.
- Stage1: Federation
- Stage2: Direct-Connection
- Stage3: GraphQL-Verification
- Stage4: GraphQL-Content
### Stage1 - Federation
Using the hyperswarm dht library we can find eachother easily and exchange a pubKey and data of which we know that the other side owns the private key of.
```
ComA ---- announce ----> DHT
ComB <--- listen ------- DHT
```
Each peer will know the `pubKey` of the other participants. Furthermore a direct connection is possible.
```
ComB ---- connect -----> ComA
ComB ---- data --------> ComA
```
### Stage2 - Direct-Connection
The hyperswarm dht library offers a secure channel based on the exchanged `pubKey` so we do not need to verify things.
The Idea is now to exchange the GraphQL Endpoints and their corresponding versions API versions in form of json
```
{
"API": {
"1.0": "https://comB.com/api/1.0/",
"1.1": "https://comB.com/api/1.1/",
"2.4": "https://comB.de/api/2.4/"
}
}
```
### Stage3 - GraphQL-Verification
The task of Stage3 is to verify that the collected data through the two Federation Stages are correct, since we did not verify yet that the proclaimed URL is actually the guy we talked to in the federation. Furthermore the sender must be verified to ensure the queried community does not reveal things to a third party not authorized.
```
ComA ----- verify -----> ComB
ComA <---- authorize --- ComB
```
Assuming this Dataset on ComA after a federation (leaving out multiple API endpoints to simplify things):
```
| PubKey | API-Endpoint | PubKey Verified On |
|--------|---------------|--------------------|
| PubA* | ComA.com/api/ | NULL |
| PubB | ComB.com/api/ | NULL |
| PubC | ComB.com/api/ | NULL |
* = self
```
using the GraphQL Endpoint to query things:
```
ComA ---- getPubKey ---> ComB.com
ComA <--- PubB --------- ComB.com
ComA UPDATE database SET pubKeyVerifiedOn = now WHERE API-Endpoint=queryURL AND PubKey=QueryResult
```
resulting in:
```
| PubKey | API-Endpoint | PubKey Verified On |
|--------|---------------|--------------------|
| PubA* | ComA.com/api/ | 1.1.1970 |
| PubB | ComB.com/api/ | NOW |
| PubC | ComB.com/api/ | NULL |
```
Furthermore we use the Header to transport a proof of who the caller is when calling and when answering:
```
ComA ---- getPubKey, sign({pubA, crypt(timeToken,pubB)},privA) --> ComB.com
ComB: is pubA known to me?
ComB: is the signature correct?
ComB: can I decrypt payload?
ComB: is timeToken <= 10sec?
ComA <----- PubB, sign({timeToken}, privB) ----------------------- ComB.com
ComA: is timeToken correct?
ComA: is signature correct?
```
This process we call authentication and can result in several errors:
1. Your pubKey was not known to me
2. Your signature is incorrect
3. I cannot decrypt your payload
4. Token Timeout (recoverable)
5. Result token was incorrect
6. Result signature was incorrect
```
| PubKey | API-Endpoint | PubKey Verified On | AuthenticationLastSuccess |
|--------|---------------|--------------------|----------------------------|
| PubA* | ComA.com/api/ | 1.1.1970 | 1.1.1970 |
| PubB | ComB.com/api/ | NOW | NOW |
| PubC | ComB.com/api/ | NULL | NULL |
```
The next process is the authorization. This happens on every call on the receiver site to determine which call is allowed for the other side.
```
ComA ---- getPubKey, sign({pubA, crypt(timeToken,pubB)},privA) --> ComB.com
ComB: did I verify pubA? SELECT PubKeyVerifiedOn FROm database WHERE PubKey = pubA
ComB: is pubA allowed to query this?
```

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# Introduction of Gradido-ID
## Motivation
To introduce the Gradido-ID base on the requirement to identify an user account per technical key instead of using an email-address. Such a technical key ensures an exact identification of an user account without giving detailed information for possible missusage.
Additionally the Gradido-ID allows to administrade any user account data like changing the email address or define several email addresses without any side effects on the identification of the user account.
## Definition
The formalized definition of the Gradido-ID can be found in the document [BenutzerVerwaltung#Gradido-ID](../BusinessRequirements/BenutzerVerwaltung#Gradido-ID).
## Steps of Introduction
To Introduce the Gradido-ID there are several steps necessary. The first step is to define a proper database schema with additional columns and tables followed by data migration steps to add or initialize the new columns and tables by keeping valid data at all.
The second step is to decribe all concerning business logic processes, which have to be adapted by introducing the Gradido-ID.
### Database-Schema
#### Users-Table
The entity users has to be changed by adding the following columns.
| Column | Type | Description |
| ------------------------ | ------ | -------------------------------------------------------------------------------------- |
| gradidoID | String | technical unique key of the user as UUID (version 4) |
| alias | String | a business unique key of the user |
| passphraseEncryptionType | int | defines the type of encrypting the passphrase: 1 = email (default), 2 = gradidoID, ... |
| emailID | int | technical foreign key to the new entity Contact |
##### Email vs emailID
The existing column `email`, will now be changed to the primary email contact, which will be stored as a contact entry in the new `UserContacts` table. It is necessary to decide if the content of the `email `will be changed to the foreign key `emailID `to the contact entry with the email address or if the email itself will be kept as a denormalized and duplicate value in the `users `table.
The preferred and proper solution will be to add a new column `Users.emailId `as foreign key to the `UsersContact `entry and delete the `Users.email` column after the migration of the email address in the `UsersContact `table.
#### new UserContacts-Table
A new entity `UserContacts `is introduced to store several contacts of different types like email, telephone or other kinds of contact addresses.
| Column | Type | Description |
| --------------- | ------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| id | int | the technical key of a contact entity |
| type | int | Defines the type of contact entry as enum: Email, Phone, etc |
| usersID | int | Defines the foreign key to the `Users` table |
| email | String | defines the address of a contact entry of type Email |
| phone | String | defines the address of a contact entry of type Phone |
| contactChannels | String | define the contact channel as comma separated list for which this entry is confirmed by the user e.g. main contact (default), infomail, contracting, advertisings, ... |
### Database-Migration
After the adaption of the database schema and to keep valid consistent data, there must be several steps of data migration to initialize the new and changed columns and tables.
#### Initialize GradidoID
In a one-time migration create for each entry of the `Users `tabel an unique UUID (version4).
#### Primary Email Contact
In a one-time migration read for each entry of the `Users `table the `Users.id` and `Users.email` and create for it a new entry in the `UsersContact `table, by initializing the contact-values with:
* id = new technical key
* type = Enum-Email
* userID = `Users.id`
* email = `Users.email`
* phone = null
* usedChannel = Enum-"main contact"
and update the `Users `entry with `Users.emailId = UsersContact.Id` and `Users.passphraseEncryptionType = 1`
After this one-time migration the column `Users.email` can be deleted.
### Adaption of BusinessLogic
The following logic or business processes has to be adapted for introducing the Gradido-ID
#### Read-Write Access of Users-Table especially Email
The ORM mapping has to be adapted to the changed and new database schema.
#### Registration Process
The logic of the registration process has to be adapted by
* initializing the `Users.userID` with a unique UUID
* creating a new `UsersContact `entry with the given email address and *maincontact* as `usedChannel `
* set `emailID `in the `Users `table as foreign key to the new `UsersContact `entry
* set `Users.passphraseEncrpytionType = 2` and encrypt the passphrase with the `Users.userID` instead of the `UsersContact.email`
#### Login Process
The logic of the login process has to be adapted by
* search the users data by reading the `Users `and the `UsersContact` table with the email (or alias as soon as the user can maintain his profil with an alias) as input
* depending on the `Users.passphraseEncryptionType` decrypt the stored password
* = 1 : with the email
* = 2 : with the userID
#### Password En/Decryption
The logic of the password en/decryption has to be adapted by encapsulate the logic to be controlled with an input parameter. The input parameter can be the email or the userID.
#### Change Password Process
The logic of change password has to be adapted by
* if the `Users.passphraseEncryptionType` = 1, then
* read the users email address from the `UsersContact `table
* give the email address as input for the password decryption of the existing password
* use the `Users.userID` as input for the password encryption fo the new password
* change the `Users.passphraseEnrycptionType` to the new value =2
* if the `Users.passphraseEncryptionType` = 2, then
* give the `Users.userID` as input for the password decryption of the existing password
* use the `Users.userID` as input for the password encryption fo the new password
#### Search- and Access Logic
A new logic has to be introduced to search the user identity per different input values. That means searching the user data must be possible by
* searching per email (only with maincontact as contactchannel)
* searching per userID
* searching per alias
#### Identity-Mapping
A new mapping logic will be necessary to allow using unmigrated APIs like GDT-servers api. So it must be possible to give this identity-mapping logic the following input to get the respective output:
* email -> userID
* email -> alias
* userID -> email
* userID -> alias
* alias -> email
* alias -> userID
#### GDT-Access
To use the GDT-servers api the used identifier for GDT has to be switch from email to userID.

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