Add bounds check to upd_test num_ parameter (#154)

Author: tompntn

program/src/oracle/oracle.c

@@ -454,7 +454,8 @@ static uint64_t upd_test( SolParameters *prm, SolAccountInfo *ka )
   if ( prm->data_len != sizeof( cmd_upd_test_t ) ||
        px->magic_ != PC_MAGIC ||
        px->ver_ != cmd->ver_ ||
-       px->type_ != PC_ACCTYPE_TEST ) {
+       px->type_ != PC_ACCTYPE_TEST ||
+       cmd->num_ > PC_COMP_SIZE ) {
     return ERROR_INVALID_ARGUMENT;
   }
 

program/src/oracle/test_oracle.c

@@ -337,6 +337,69 @@ Test(oracle, pc_size ) {
       PC_COMP_SIZE * sizeof( pc_price_comp_t ) );
 }
 
+Test( oracle, upd_test ) {
+  
+  // Initialize the test account
+  SolPubkey p_id  = {.x = { 0xff, }};
+  SolPubkey pkey = {.x = { 1, }};
+  SolPubkey mkey = {.x = { 2, }};
+  uint64_t pqty = 100;
+  pc_map_table_t mptr[1];
+  sol_memset( mptr, 0, sizeof( pc_price_t ) );
+  SolAccountInfo acc[] = {{
+      .key         = &pkey,
+      .lamports    = &pqty,
+      .data_len    = 0,
+      .data        = NULL,
+      .owner       = NULL,
+      .rent_epoch  = 0,
+      .is_signer   = true,
+      .is_writable = true,
+      .executable  = false
+  },{
+      .key         = &mkey,
+      .lamports    = &pqty,
+      .data_len    = sizeof( pc_price_t ),
+      .data        = (uint8_t*)mptr,
+      .owner       = &p_id,
+      .rent_epoch  = 0,
+      .is_signer   = true,
+      .is_writable = true,
+      .executable  = false
+  }};
+  cmd_hdr_t hdata = {
+    .ver_ = PC_VERSION,
+    .cmd_ = e_cmd_init_test,
+  };
+  SolParameters prm = {
+    .ka         = acc,
+    .ka_num     = 2,
+    .data       = (const uint8_t*)&hdata,
+    .data_len   = sizeof( hdata ),
+    .program_id = &p_id
+  };
+  cr_assert( SUCCESS == dispatch( &prm, acc ) );
+
+  // Try and send an upd_test instruction with an invalid num_ parameter
+  cmd_upd_test_t idata = {
+    .ver_ = PC_VERSION,
+    .cmd_ = e_cmd_upd_test,
+    .num_ = PC_COMP_SIZE + 1,
+    .expo_ = -8,
+    .slot_diff_ = {1, 1},
+    .price_ = {10, 10},
+    .conf_ = {20, 20}
+    };
+  prm.data = (const uint8_t*)&idata;
+  prm.data_len = sizeof( idata );
+  cr_assert( ERROR_INVALID_ARGUMENT == dispatch( &prm, acc ) );
+
+  // Send an upd_test instruction with a valid num_ parameter
+  idata.num_ = 2;
+  cr_assert( SUCCESS == dispatch( &prm, acc ) );
+
+}
+
 Test( oracle, upd_price ) {
   cmd_upd_price_t idata = {
     .ver_    = PC_VERSION,