mirror of
https://github.com/MariaDB/server.git
synced 2025-07-30 16:24:05 +03:00
rename of net_pkg.cc to protocol.cc
Class for sending data from server to client (Protocol) This handles both the old ( <= 4.0 ) protocol and then new binary protocol that is used for prepared statements.
This commit is contained in:
monty@mashka.mysql.fi
244
sql/sql_base.cc
244
sql/sql_base.cc
@ -196,250 +196,6 @@ OPEN_TABLE_LIST *list_open_tables(THD *thd, const char *wild)
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}
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/*
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Send name and type of result to client converted to a given char set
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SYNOPSIS
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send_convert_fields()
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THD Thread data object
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list List of items to send to client
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convert object used to convertation to another character set
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flag Bit mask with the following functions:
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2 send default values
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4 Don't convert field names
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DESCRIPTION
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Sum fields has table name empty and field_name.
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RETURN VALUES
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0 ok
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1 Error (Note that in this case the error is not sent to the client)
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*/
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bool
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send_convert_fields(THD *thd,List<Item> &list,CONVERT *convert,uint flag)
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{
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List_iterator_fast<Item> it(list);
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Item *item;
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char buff[80];
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String tmp((char*) buff,sizeof(buff),default_charset_info);
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String *res,*packet= &thd->packet;
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DBUG_ENTER("send_convert_fields");
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while ((item=it++))
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{
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char *pos;
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Send_field field;
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item->make_field(&field);
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packet->length(0);
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if (thd->client_capabilities & CLIENT_PROTOCOL_41)
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{
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if (convert->store(packet,field.db_name,
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(uint) strlen(field.db_name)) ||
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convert->store(packet,field.table_name,
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(uint) strlen(field.table_name)) ||
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convert->store(packet,field.org_table_name,
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(uint) strlen(field.org_table_name)) ||
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convert->store(packet,field.col_name,
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(uint) strlen(field.col_name)) ||
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convert->store(packet,field.org_col_name,
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(uint) strlen(field.org_col_name)) ||
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packet->realloc(packet->length()+10))
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goto err;
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}
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else
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{
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if (convert->store(packet,field.table_name,
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(uint) strlen(field.table_name)) ||
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convert->store(packet,field.col_name,
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(uint) strlen(field.col_name)) ||
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packet->realloc(packet->length()+10))
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goto err;
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}
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pos= (char*) packet->ptr()+packet->length();
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if (!(thd->client_capabilities & CLIENT_LONG_FLAG))
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{
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packet->length(packet->length()+9);
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pos[0]=3; int3store(pos+1,field.length);
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pos[4]=1; pos[5]=field.type;
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pos[6]=2; pos[7]=(char) field.flags; pos[8]= (char) field.decimals;
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}
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else
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{
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packet->length(packet->length()+10);
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pos[0]=3; int3store(pos+1,field.length);
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pos[4]=1; pos[5]=field.type;
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pos[6]=3; int2store(pos+7,field.flags); pos[9]= (char) field.decimals;
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}
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if (flag & 2)
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{ // Send default value
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if (!(res=item->val_str(&tmp)))
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{
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if (net_store_null(packet))
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goto err;
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}
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else if (convert->store(packet,res->ptr(),res->length()))
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goto err;
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}
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if (my_net_write(&thd->net, (char*) packet->ptr(),packet->length()))
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break; /* purecov: inspected */
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}
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DBUG_RETURN(0);
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err:
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DBUG_RETURN(1);
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}
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/*
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Send name and type of result to client.
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SYNOPSIS
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send_non_convert_fields()
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THD Thread data object
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list List of items to send to client
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flag Bit mask with the following functions:
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2 send default values
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4 Don't convert field names
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DESCRIPTION
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Sum fields has table name empty and field_name.
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RETURN VALUES
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0 ok
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1 Error
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*/
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bool
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send_non_convert_fields(THD *thd,List<Item> &list,uint flag)
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{
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List_iterator_fast<Item> it(list);
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Item *item;
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char buff[80];
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String tmp((char*) buff,sizeof(buff),default_charset_info);
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String *res,*packet= &thd->packet;
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while ((item=it++))
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{
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char *pos;
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Send_field field;
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item->make_field(&field);
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packet->length(0);
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if (thd->client_capabilities & CLIENT_PROTOCOL_41)
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{
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if (net_store_data(packet,field.db_name) ||
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net_store_data(packet,field.table_name) ||
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net_store_data(packet,field.org_table_name) ||
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net_store_data(packet,field.col_name) ||
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net_store_data(packet,field.org_col_name) ||
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packet->realloc(packet->length()+10))
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return 1;
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}
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else
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{
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if (net_store_data(packet,field.table_name) ||
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net_store_data(packet,field.col_name) ||
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packet->realloc(packet->length()+10))
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return 1;
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}
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pos= (char*) packet->ptr()+packet->length();
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if (!(thd->client_capabilities & CLIENT_LONG_FLAG))
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{
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packet->length(packet->length()+9);
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pos[0]=3; int3store(pos+1,field.length);
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pos[4]=1; pos[5]=field.type;
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pos[6]=2; pos[7]=(char) field.flags; pos[8]= (char) field.decimals;
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}
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else
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{
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packet->length(packet->length()+10);
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pos[0]=3; int3store(pos+1,field.length);
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pos[4]=1; pos[5]=field.type;
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pos[6]=3; int2store(pos+7,field.flags); pos[9]= (char) field.decimals;
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}
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if (flag & 2)
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{ // Send default value
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if (!(res=item->val_str(&tmp)))
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{
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if (net_store_null(packet))
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return 1;
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}
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else if (net_store_data(packet,res->ptr(),res->length()))
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return 1;
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}
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if (my_net_write(&thd->net, (char*) packet->ptr(),packet->length()))
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break;
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}
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return 0;
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}
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/*
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Send name and type of result to client.
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SYNOPSIS
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send_fields()
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THD Thread data object
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list List of items to send to client
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convert object used to convertation to another character set
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flag Bit mask with the following functions:
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1 send number of rows
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2 send default values
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4 Don't convert field names
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DESCRIPTION
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Sum fields has table name empty and field_name.
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Uses send_fields_convert() and send_fields() depending on
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if we have an active character set convert or not.
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RETURN VALUES
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0 ok
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1 Error (Note that in this case the error is not sent to the client)
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*/
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bool
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send_fields(THD *thd, List<Item> &list, uint flag)
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{
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char buff[9]; // Big enough for store_length
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CONVERT *convert= (flag & 4) ? (CONVERT*) 0 : thd->variables.convert_set;
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DBUG_ENTER("send_fields");
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if (thd->fatal_error) // We have got an error
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goto err;
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if (flag & 1)
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{ // Packet with number of elements
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char *pos=net_store_length(buff, (uint) list.elements);
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(void) my_net_write(&thd->net, buff,(uint) (pos-buff));
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}
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/*
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Avoid check conditions on convert() for each field
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by having two different functions
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*/
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if (convert)
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{
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if (send_convert_fields(thd, list, convert, flag))
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goto err;
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}
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else if (send_non_convert_fields(thd, list, flag))
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goto err;
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send_eof(thd);
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DBUG_RETURN(0);
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err:
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send_error(thd,ER_OUT_OF_RESOURCES); /* purecov: inspected */
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DBUG_RETURN(1); /* purecov: inspected */
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}
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/*****************************************************************************
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* Functions to free open table cache
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****************************************************************************/
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