manifest/program/processor/
shared.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
use std::{
    cell::{Ref, RefMut},
    mem::size_of,
};

use crate::{
    require,
    state::{
        claimed_seat::ClaimedSeat, constants::MARKET_BLOCK_SIZE, DynamicAccount, GlobalFixed,
        MarketFixed, MarketRefMut, GLOBAL_BLOCK_SIZE,
    },
    validation::{ManifestAccount, ManifestAccountInfo, Program, Signer},
};
use bytemuck::Pod;
use hypertree::{get_helper, get_mut_helper, DataIndex, Get, RBNode};
#[cfg(not(feature = "certora"))]
use solana_program::sysvar::Sysvar;
use solana_program::{
    account_info::AccountInfo, entrypoint::ProgramResult, instruction::Instruction,
    sysvar::slot_history::ProgramError,
};

use super::batch_update::MarketDataTreeNodeType;

pub(crate) fn expand_market_if_needed<'a, 'info, T: ManifestAccount + Pod + Clone>(
    payer: &Signer<'a, 'info>,
    market_account_info: &ManifestAccountInfo<'a, 'info, T>,
    system_program: &Program<'a, 'info>,
) -> ProgramResult {
    let need_expand: bool = {
        let market_data: &Ref<&mut [u8]> = &market_account_info.try_borrow_data()?;
        let fixed: &MarketFixed = get_helper::<MarketFixed>(market_data, 0_u32);
        !fixed.has_free_block()
    };

    if !need_expand {
        return Ok(());
    }
    expand_market(payer, market_account_info, system_program)
}

pub(crate) fn expand_market<'a, 'info, T: ManifestAccount + Pod + Clone>(
    payer: &Signer<'a, 'info>,
    manifest_account: &ManifestAccountInfo<'a, 'info, T>,
    system_program: &Program<'a, 'info>,
) -> ProgramResult {
    expand_dynamic(payer, manifest_account, system_program, MARKET_BLOCK_SIZE)?;
    expand_market_fixed(manifest_account.info)?;
    Ok(())
}

// Expand is always needed because global doesnt free bytes ever.
pub(crate) fn expand_global<'a, 'info, T: ManifestAccount + Pod + Clone>(
    payer: &Signer<'a, 'info>,
    manifest_account: &ManifestAccountInfo<'a, 'info, T>,
    system_program: &Program<'a, 'info>,
) -> ProgramResult {
    // Expand twice because of two trees at once.
    expand_dynamic(payer, manifest_account, system_program, GLOBAL_BLOCK_SIZE)?;
    expand_dynamic(payer, manifest_account, system_program, GLOBAL_BLOCK_SIZE)?;
    expand_global_fixed(manifest_account.info)?;
    Ok(())
}

#[cfg(feature = "certora")]
fn expand_dynamic<'a, 'info, T: ManifestAccount + Pod + Clone>(
    _payer: &Signer<'a, 'info>,
    _manifest_account: &ManifestAccountInfo<'a, 'info, T>,
    _system_program: &Program<'a, 'info>,
    _block_size: usize,
) -> ProgramResult {
    Ok(())
}
#[cfg(not(feature = "certora"))]
fn expand_dynamic<'a, 'info, T: ManifestAccount + Pod + Clone>(
    payer: &Signer<'a, 'info>,
    manifest_account: &ManifestAccountInfo<'a, 'info, T>,
    system_program: &Program<'a, 'info>,
    block_size: usize,
) -> ProgramResult {
    // Account types were already validated, so do not need to reverify that the
    // accounts are in order: payer, expandable_account, system_program, ...
    let expandable_account: &AccountInfo = manifest_account.info;
    let new_size: usize = expandable_account.data_len() + block_size;

    let rent: solana_program::rent::Rent = solana_program::rent::Rent::get()?;
    let new_minimum_balance: u64 = rent.minimum_balance(new_size);
    let old_minimum_balance: u64 = rent.minimum_balance(expandable_account.data_len());
    let lamports_diff: u64 = new_minimum_balance.saturating_sub(old_minimum_balance);

    let payer: &AccountInfo = payer.info;
    let system_program: &AccountInfo = system_program.info;

    invoke(
        &solana_program::system_instruction::transfer(
            payer.key,
            expandable_account.key,
            lamports_diff,
        ),
        &[
            payer.clone(),
            expandable_account.clone(),
            system_program.clone(),
        ],
    )?;

    #[cfg(feature = "fuzz")]
    {
        solana_program::program::invoke(
            &solana_program::system_instruction::allocate(expandable_account.key, new_size as u64),
            &[expandable_account.clone(), system_program.clone()],
        )?;
    }
    #[cfg(not(feature = "fuzz"))]
    {
        expandable_account.realloc(new_size, false)?;
    }
    Ok(())
}

fn expand_market_fixed(expandable_account: &AccountInfo) -> ProgramResult {
    let market_data: &mut RefMut<&mut [u8]> = &mut expandable_account.try_borrow_mut_data()?;
    let mut dynamic_account: DynamicAccount<&mut MarketFixed, &mut [u8]> =
        get_mut_dynamic_account(market_data);
    dynamic_account.market_expand()?;
    Ok(())
}

fn expand_global_fixed(expandable_account: &AccountInfo) -> ProgramResult {
    let global_data: &mut RefMut<&mut [u8]> = &mut expandable_account.try_borrow_mut_data()?;
    let mut dynamic_account: DynamicAccount<&mut GlobalFixed, &mut [u8]> =
        get_mut_dynamic_account(global_data);
    dynamic_account.global_expand()?;
    Ok(())
}

/// Generic get dynamic account from the data bytes of the account.
pub fn get_dynamic_account<'a, T: Get>(
    data: &'a Ref<'a, &'a mut [u8]>,
) -> DynamicAccount<&'a T, &'a [u8]> {
    let (fixed_data, dynamic) = data.split_at(size_of::<T>());
    let fixed: &T = get_helper::<T>(fixed_data, 0_u32);

    let dynamic_account: DynamicAccount<&'a T, &'a [u8]> = DynamicAccount { fixed, dynamic };
    dynamic_account
}

/// Generic get mutable dynamic account from the data bytes of the account.
pub fn get_mut_dynamic_account<'a, T: Get>(
    data: &'a mut RefMut<'_, &mut [u8]>,
) -> DynamicAccount<&'a mut T, &'a mut [u8]> {
    let (fixed_data, dynamic) = data.split_at_mut(size_of::<T>());
    let fixed: &mut T = get_mut_helper::<T>(fixed_data, 0_u32);

    let dynamic_account: DynamicAccount<&'a mut T, &'a mut [u8]> =
        DynamicAccount { fixed, dynamic };
    dynamic_account
}

/// Generic get owned dynamic account from the data bytes of the account.
pub fn get_dynamic_value<T: Get>(data: &[u8]) -> DynamicAccount<T, Vec<u8>> {
    let (fixed_data, dynamic_data) = data.split_at(size_of::<T>());
    let market_fixed: &T = get_helper::<T>(fixed_data, 0_u32);

    let dynamic_account: DynamicAccount<T, Vec<u8>> = DynamicAccount {
        fixed: *market_fixed,
        dynamic: (dynamic_data).to_vec(),
    };
    dynamic_account
}

// Uses a MarketRefMut instead of a MarketRef because callers will have mutable data.
pub(crate) fn get_trader_index_with_hint(
    trader_index_hint: Option<DataIndex>,
    dynamic_account: &MarketRefMut,
    payer: &Signer,
) -> Result<DataIndex, ProgramError> {
    let trader_index: DataIndex = match trader_index_hint {
        None => dynamic_account.get_trader_index(payer.key),
        Some(hinted_index) => {
            verify_trader_index_hint(hinted_index, &dynamic_account, &payer)?;
            hinted_index
        }
    };
    Ok(trader_index)
}

fn verify_trader_index_hint(
    hinted_index: DataIndex,
    dynamic_account: &MarketRefMut,
    payer: &Signer,
) -> ProgramResult {
    require!(
        hinted_index % (MARKET_BLOCK_SIZE as DataIndex) == 0,
        crate::program::ManifestError::WrongIndexHintParams,
        "Invalid trader hint index {} did not align",
        hinted_index,
    )?;
    require!(
        get_helper::<RBNode<ClaimedSeat>>(&dynamic_account.dynamic, hinted_index)
            .get_payload_type()
            == MarketDataTreeNodeType::ClaimedSeat as u8,
        crate::program::ManifestError::WrongIndexHintParams,
        "Invalid trader hint index {} is not a ClaimedSeat",
        hinted_index,
    )?;
    require!(
        payer
            .key
            .eq(dynamic_account.get_trader_key_by_index(hinted_index)),
        crate::program::ManifestError::WrongIndexHintParams,
        "Invalid trader hint index {} did not match payer",
        hinted_index
    )?;
    Ok(())
}

// TODO: Same for invoke_signed

pub fn invoke(ix: &Instruction, account_infos: &[AccountInfo<'_>]) -> ProgramResult {
    #[cfg(target_os = "solana")]
    {
        solana_invoke::invoke_unchecked(ix, account_infos)
    }
    #[cfg(not(target_os = "solana"))]
    {
        solana_program::program::invoke(ix, account_infos)
    }
}