Manage sessions in your Solana Anchor Programs.
cargo add gpl-session@1.0.0 --features no-entrypointIf you're using anchor 0.26.0
cargo add gpl-session@0.2.0 --features no-entrypoint- Import the dependencies
use gpl_session::{SessionError, SessionToken, session_auth_or, Session};- Derive the
Sessiontrait on your instruction struct
#[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>,
.....
}- Add the
session_auth_ormacro 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 usedrequire*!macros in anchor_lang you already know how this works.
#[session_auth_or(
ctx.accounts.user.authority.key() == ctx.accounts.authority.key(),
ErrorCode
)]
pub fn ix_handler(ctx: Context<Instruction>,) -> Result<()> {
.....
}