GPL Session
==============
Manage sessions in your Solana Anchor Programs.
# Installation
```bash
cargo add session-keys --features no-entrypoint
```
# Usage
1. Import the dependencies
```rust
use session_keys::{SessionError, SessionToken, session_auth_or, Session};
```
2. Derive the `Session` trait on your instruction struct
```rust
#[derive(Accounts, Session)]
pub struct Instruction<'info> {
.....
pub user: Account<'info, User>,
#[session(
// The ephemeral keypair signing the transaction
signer = signer,
// The authority of the user account which must have created the session
authority = user.authority.key()
)]
// Session Tokens are passed as optional accounts
pub session_token: Option<Account<'info, SessionToken>>,
#[account(mut)]
pub signer: Signer<'info>,
.....
}
```
3. Add the `session_auth_or` macro to your instruction handler with fallback logic on who the instruction should validate the signer when sessions are not present and an appropirate ErrorCode. If you've used `require*!` macros in anchor_lang you already know how this works.
```rust
#[session_auth_or(
ctx.accounts.user.authority.key() == ctx.accounts.authority.key(),
ErrorCode
)]
pub fn ix_handler(ctx: Context<Instruction>,) -> Result<()> {
.....
}
```
# Example
See [KamikazeJoe](https://github.com/magicblock-labs/Kamikaze-Joe) for an example of a game using session-keys.