program: let anotehr signer deposit on user behalf

Author: crispheaney

programs/drift/src/instructions/admin.rs

@@ -4764,6 +4764,7 @@ pub fn handle_admin_deposit<'c: 'info, 'info>(
         market_index,
         explanation: DepositExplanation::Reward,
         transfer_user: None,
+        signer: Some(ctx.accounts.admin.key()),
     };
     emit!(deposit_record);
 

programs/drift/src/instructions/user.rs

@@ -653,6 +653,11 @@ pub fn handle_deposit<'c: 'info, 'info>(
     } else {
         DepositExplanation::None
     };
+    let signer = if ctx.accounts.authority.key() == user.authority {
+        Some(ctx.accounts.authority.key())
+    } else {
+        None
+    };
     let deposit_record = DepositRecord {
         ts: now,
         deposit_record_id,
@@ -670,6 +675,7 @@ pub fn handle_deposit<'c: 'info, 'info>(
         market_index,
         explanation,
         transfer_user: None,
+        signer,
     };
     emit!(deposit_record);
 
@@ -825,6 +831,7 @@ pub fn handle_withdraw<'c: 'info, 'info>(
         total_withdraws_after: user.total_withdraws,
         explanation: deposit_explanation,
         transfer_user: None,
+        signer: None,
     };
     emit!(deposit_record);
 
@@ -995,6 +1002,7 @@ pub fn handle_transfer_deposit<'c: 'info, 'info>(
             total_withdraws_after: from_user.total_withdraws,
             explanation: DepositExplanation::Transfer,
             transfer_user: Some(to_user_key),
+            signer: None,
         };
         emit!(deposit_record);
     }
@@ -1059,6 +1067,7 @@ pub fn handle_transfer_deposit<'c: 'info, 'info>(
             total_withdraws_after,
             explanation: DepositExplanation::Transfer,
             transfer_user: Some(from_user_key),
+            signer: None,
         };
         emit!(deposit_record);
     }
@@ -1271,6 +1280,7 @@ pub fn handle_transfer_pools<'c: 'info, 'info>(
             total_withdraws_after: from_user.total_withdraws,
             explanation: DepositExplanation::Transfer,
             transfer_user: Some(to_user_key),
+            signer: None,
         };
         emit!(deposit_record);
 
@@ -1305,6 +1315,7 @@ pub fn handle_transfer_pools<'c: 'info, 'info>(
             total_withdraws_after: to_user.total_withdraws,
             explanation: DepositExplanation::Transfer,
             transfer_user: Some(from_user_key),
+            signer: None,
         };
         emit!(deposit_record);
     }
@@ -1371,6 +1382,7 @@ pub fn handle_transfer_pools<'c: 'info, 'info>(
             total_withdraws_after: from_user.total_withdraws,
             explanation: DepositExplanation::Transfer,
             transfer_user: Some(to_user_key),
+            signer: None,
         };
         emit!(deposit_record);
 
@@ -1405,6 +1417,7 @@ pub fn handle_transfer_pools<'c: 'info, 'info>(
             total_withdraws_after: to_user.total_withdraws,
             explanation: DepositExplanation::Transfer,
             transfer_user: Some(from_user_key),
+            signer: None,
         };
         emit!(deposit_record);
     }
@@ -4140,8 +4153,7 @@ pub struct InitializeReferrerName<'info> {
 pub struct Deposit<'info> {
     pub state: Box<Account<'info, State>>,
     #[account(
-        mut,
-        constraint = can_sign_for_user(&user, &authority)?
+        mut
     )]
     pub user: AccountLoader<'info, User>,
     #[account(

programs/drift/src/state/events.rs

@@ -51,6 +51,7 @@ pub struct DepositRecord {
     pub total_withdraws_after: u64,
     pub explanation: DepositExplanation,
     pub transfer_user: Option<Pubkey>,
+    pub signer: Option<Pubkey>,
 }
 
 #[derive(Clone, Copy, BorshSerialize, BorshDeserialize, PartialEq, Eq, Default)]