spl-governance 4.0.0

Solana Program Library Governance Program
Documentation 
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//! Program state processor

use {
    crate::{
        state::{
            enums::GovernanceAccountType,
            governance::{
                assert_valid_create_governance_args, get_program_governance_address_seeds,
                GovernanceConfig, GovernanceV2,
            },
            realm::get_realm_data,
        },
        tools::{
            bpf_loader_upgradeable::{
                assert_program_upgrade_authority_is_signer, set_program_upgrade_authority,
            },
            structs::Reserved119,
        },
    },
    solana_program::{
        account_info::{next_account_info, AccountInfo},
        entrypoint::ProgramResult,
        pubkey::Pubkey,
        rent::Rent,
        sysvar::Sysvar,
    },
    spl_governance_tools::account::create_and_serialize_account_signed,
};

/// Processes CreateProgramGovernance instruction
pub fn process_create_program_governance(
    program_id: &Pubkey,
    accounts: &[AccountInfo],
    config: GovernanceConfig,
    transfer_upgrade_authority: bool,
) -> ProgramResult {
    let account_info_iter = &mut accounts.iter();

    let realm_info = next_account_info(account_info_iter)?; // 0
    let program_governance_info = next_account_info(account_info_iter)?; // 1

    let governed_program_info = next_account_info(account_info_iter)?; // 2
    let governed_program_data_info = next_account_info(account_info_iter)?; // 3
    let governed_program_upgrade_authority_info = next_account_info(account_info_iter)?; // 4

    let token_owner_record_info = next_account_info(account_info_iter)?; // 5

    let payer_info = next_account_info(account_info_iter)?; // 6
    let bpf_upgrade_loader_info = next_account_info(account_info_iter)?; // 7

    let system_info = next_account_info(account_info_iter)?; // 8

    let rent = Rent::get()?;

    let create_authority_info = next_account_info(account_info_iter)?; // 9

    assert_valid_create_governance_args(program_id, &config, realm_info)?;

    let realm_data = get_realm_data(program_id, realm_info)?;

    realm_data.assert_create_authority_can_create_governance(
        program_id,
        realm_info.key,
        token_owner_record_info,
        create_authority_info,
        account_info_iter, // realm_config_info 10, voter_weight_record_info 11
    )?;

    let program_governance_data = GovernanceV2 {
        account_type: GovernanceAccountType::ProgramGovernanceV2,
        realm: *realm_info.key,
        governed_account: *governed_program_info.key,
        config,
        reserved1: 0,
        reserved_v2: Reserved119::default(),
        required_signatories_count: 0,
        active_proposal_count: 0,
    };

    create_and_serialize_account_signed::<GovernanceV2>(
        payer_info,
        program_governance_info,
        &program_governance_data,
        &get_program_governance_address_seeds(realm_info.key, governed_program_info.key),
        program_id,
        system_info,
        &rent,
        0,
    )?;

    if transfer_upgrade_authority {
        set_program_upgrade_authority(
            governed_program_info.key,
            governed_program_data_info,
            governed_program_upgrade_authority_info,
            program_governance_info,
            bpf_upgrade_loader_info,
        )?;
    } else {
        assert_program_upgrade_authority_is_signer(
            governed_program_info.key,
            governed_program_data_info,
            governed_program_upgrade_authority_info,
        )?;
    }

    Ok(())
}