mirror of https://github.com/BOINC/boinc.git
529 lines
13 KiB
C++
529 lines
13 KiB
C++
// This file is part of BOINC.
|
|
// http://boinc.berkeley.edu
|
|
// Copyright (C) 2008 University of California
|
|
//
|
|
// BOINC is free software; you can redistribute it and/or modify it
|
|
// under the terms of the GNU Lesser General Public License
|
|
// as published by the Free Software Foundation,
|
|
// either version 3 of the License, or (at your option) any later version.
|
|
//
|
|
// BOINC is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
// See the GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#include "config.h"
|
|
#include <cstdio>
|
|
#include <cstring>
|
|
#include <cstdlib>
|
|
#include <mysql.h>
|
|
|
|
#include "error_numbers.h"
|
|
#include "str_util.h"
|
|
#include "str_replace.h"
|
|
#include "db_base.h"
|
|
|
|
#ifdef _USING_FCGI_
|
|
#include "fcgi_stdio.h"
|
|
#include "sched_msgs.h"
|
|
#endif
|
|
|
|
bool g_print_queries = false;
|
|
|
|
DB_CONN::DB_CONN() {
|
|
mysql = 0;
|
|
}
|
|
|
|
int DB_CONN::open(
|
|
char* db_name, char* db_host, char* db_user, char* dbpassword
|
|
) {
|
|
mysql = mysql_init(0);
|
|
if (!mysql) return ERR_DB_CANT_INIT;
|
|
|
|
// MySQL's support for the reconnect option has changed over time:
|
|
// see http://dev.mysql.com/doc/refman/5.0/en/mysql-options.html
|
|
// and http://dev.mysql.com/doc/refman/5.1/en/mysql-options.html
|
|
//
|
|
// v < 5.0.13: not supported
|
|
// 5.0.13 <= v < 5.0.19: set option after real_connect()
|
|
// 5.0.19 < v < 5.1: set option before real_connect();
|
|
// 5.1.0 <= v < 5.1.6: set option after real_connect()
|
|
// 5.1.6 <= v: set option before real_connect
|
|
|
|
int v = MYSQL_VERSION_ID;
|
|
bool set_opt_before = false, set_opt_after = false;
|
|
if (v < 50013 ) {
|
|
} else if (v < 50019) {
|
|
set_opt_after = true;
|
|
} else if (v < 50100) {
|
|
set_opt_before = true;
|
|
} else if (v < 50106) {
|
|
set_opt_after = true;
|
|
} else {
|
|
set_opt_before = true;
|
|
}
|
|
|
|
if (set_opt_before) {
|
|
my_bool mbReconnect = 1;
|
|
mysql_options(mysql, MYSQL_OPT_RECONNECT, &mbReconnect);
|
|
}
|
|
|
|
// parse hostname:port
|
|
//
|
|
char host[256];
|
|
int port = 0;
|
|
strcpy(host, db_host);
|
|
char* p = strchr(host, ':');
|
|
if (p) {
|
|
*p = 0;
|
|
port = atoi(p+1);
|
|
}
|
|
|
|
// CLIENT_FOUND_ROWS means that the # of affected rows for an update
|
|
// is the # matched by the where, rather than the # actually changed
|
|
//
|
|
mysql = mysql_real_connect(
|
|
mysql, host, db_user, dbpassword, db_name, port, 0, CLIENT_FOUND_ROWS
|
|
);
|
|
if (mysql == 0) return ERR_DB_CANT_CONNECT;
|
|
|
|
if (set_opt_after) {
|
|
my_bool mbReconnect = 1;
|
|
mysql_options(mysql, MYSQL_OPT_RECONNECT, &mbReconnect);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void DB_CONN::close() {
|
|
if (mysql) mysql_close(mysql);
|
|
}
|
|
|
|
int DB_CONN::set_isolation_level(ISOLATION_LEVEL level) {
|
|
const char* level_str;
|
|
char query[256];
|
|
|
|
switch(level) {
|
|
case READ_UNCOMMITTED:
|
|
level_str = "READ UNCOMMITTED";
|
|
break;
|
|
case READ_COMMITTED:
|
|
level_str = "READ COMMITTED";
|
|
break;
|
|
case REPEATABLE_READ:
|
|
level_str = "REPEATABLE READ";
|
|
break;
|
|
case SERIALIZABLE:
|
|
level_str = "SERIALIZABLE";
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
sprintf(query, "SET SESSION TRANSACTION ISOLATION LEVEL %s", level_str);
|
|
return do_query(query);
|
|
}
|
|
|
|
int DB_CONN::do_query(const char* p) {
|
|
int retval;
|
|
if (g_print_queries) {
|
|
#ifdef _USING_FCGI_
|
|
log_messages.printf(MSG_NORMAL, "query: %s\n", p);
|
|
#else
|
|
fprintf(stderr, "query: %s\n", p);
|
|
#endif
|
|
}
|
|
retval = mysql_query(mysql, p);
|
|
if (retval) {
|
|
fprintf(stderr, "Database error: %s\nquery=%s\n", error_string(), p);
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
// returns the number of rows matched by an update query
|
|
//
|
|
int DB_CONN::affected_rows() {
|
|
unsigned long x = (unsigned long)mysql_affected_rows(mysql);
|
|
//fprintf(stderr, "x: %lu i: %d\n", x, (int)x);
|
|
return (int)x;
|
|
}
|
|
|
|
int DB_CONN::insert_id() {
|
|
int retval;
|
|
MYSQL_ROW row;
|
|
MYSQL_RES* rp;
|
|
|
|
retval = do_query("select LAST_INSERT_ID()");
|
|
if (retval) return retval;
|
|
rp = mysql_store_result(mysql);
|
|
row = mysql_fetch_row(rp);
|
|
int x = atoi(row[0]);
|
|
mysql_free_result(rp);
|
|
return x;
|
|
}
|
|
|
|
void DB_CONN::print_error(const char* p) {
|
|
fprintf(stderr, "%s: Database error: %s\n", p, error_string());
|
|
}
|
|
|
|
const char* DB_CONN::error_string() {
|
|
return mysql?mysql_error(mysql):"Not connected";
|
|
}
|
|
|
|
int DB_CONN::start_transaction() {
|
|
return do_query("START TRANSACTION");
|
|
}
|
|
|
|
int DB_CONN::commit_transaction() {
|
|
return do_query("COMMIT");
|
|
}
|
|
|
|
int DB_CONN::rollback_transaction() {
|
|
return do_query("ROLLBACK");
|
|
}
|
|
|
|
int DB_CONN::ping() {
|
|
int retval = mysql_ping(mysql);
|
|
if (retval) return ERR_DB_CANT_CONNECT;
|
|
return 0;
|
|
}
|
|
|
|
DB_BASE::DB_BASE(const char *tn, DB_CONN* p) : db(p), table_name(tn) {
|
|
}
|
|
|
|
int DB_BASE::get_id() { return 0;}
|
|
void DB_BASE::db_print(char*) {}
|
|
void DB_BASE::db_parse(MYSQL_ROW&) {}
|
|
|
|
int DB_BASE::insert() {
|
|
char vals[MAX_QUERY_LEN*2], query[MAX_QUERY_LEN*2];
|
|
db_print(vals);
|
|
sprintf(query, "insert into %s set %s", table_name, vals);
|
|
return db->do_query(query);
|
|
}
|
|
|
|
int DB_BASE::insert_batch(std::string& values) {
|
|
std::string query;
|
|
query = "insert into " + std::string(table_name) + " values " + values;
|
|
return db->do_query(query.c_str());
|
|
}
|
|
|
|
int DB_BASE::affected_rows() {
|
|
return db->affected_rows();
|
|
}
|
|
|
|
//////////// FUNCTIONS FOR TABLES THAT HAVE AN ID FIELD ///////
|
|
|
|
int DB_BASE::lookup_id(int id) {
|
|
char query[MAX_QUERY_LEN];
|
|
int retval;
|
|
MYSQL_ROW row;
|
|
MYSQL_RES* rp;
|
|
|
|
sprintf(query, "select * from %s where id=%u", table_name, id);
|
|
|
|
retval = db->do_query(query);
|
|
if (retval) return retval;
|
|
rp = mysql_store_result(db->mysql);
|
|
if (!rp) return -1;
|
|
row = mysql_fetch_row(rp);
|
|
if (row) db_parse(row);
|
|
mysql_free_result(rp);
|
|
if (row == 0) return ERR_DB_NOT_FOUND;
|
|
|
|
// don't bother checking for uniqueness here
|
|
return 0;
|
|
}
|
|
|
|
// update an entire record
|
|
//
|
|
int DB_BASE::update() {
|
|
char vals[MAX_QUERY_LEN], query[MAX_QUERY_LEN];
|
|
db_print(vals);
|
|
sprintf(query, "update %s set %s where id=%u", table_name, vals, get_id());
|
|
int retval = db->do_query(query);
|
|
if (retval) return retval;
|
|
if (db->affected_rows() != 1) return ERR_DB_NOT_FOUND;
|
|
return 0;
|
|
}
|
|
|
|
// update one or more fields
|
|
// "clause" is something like "foo=5, blah='xxx'" or "foo=foo+5"
|
|
//
|
|
int DB_BASE::update_field(const char* clause, const char* where_clause) {
|
|
char query[MAX_QUERY_LEN];
|
|
if (where_clause) {
|
|
sprintf(query, "update %s set %s where id=%u and %s", table_name, clause, get_id(), where_clause);
|
|
} else {
|
|
sprintf(query, "update %s set %s where id=%u", table_name, clause, get_id());
|
|
}
|
|
return db->do_query(query);
|
|
}
|
|
|
|
// delete record
|
|
//
|
|
int DB_BASE::delete_from_db() {
|
|
char query[MAX_QUERY_LEN];
|
|
sprintf(query, "delete from %s where id=%u", table_name, get_id());
|
|
return db->do_query(query);
|
|
}
|
|
|
|
int DB_BASE::delete_from_db_multi(const char* where_clause) {
|
|
char query[MAX_QUERY_LEN];
|
|
sprintf(query, "delete from %s where %s", table_name, where_clause);
|
|
return db->do_query(query);
|
|
}
|
|
|
|
int DB_BASE::get_field_ints(const char* fields, int nfields, int* vals) {
|
|
char query[MAX_QUERY_LEN];
|
|
int retval;
|
|
MYSQL_ROW row;
|
|
MYSQL_RES* rp;
|
|
|
|
sprintf(query,
|
|
"select %s from %s where id=%u", fields, table_name, get_id()
|
|
);
|
|
retval = db->do_query(query);
|
|
if (retval) return retval;
|
|
rp = mysql_store_result(db->mysql);
|
|
if (!rp) return -1;
|
|
row = mysql_fetch_row(rp);
|
|
if (row) {
|
|
for (int i=0; i<nfields; i++) {
|
|
vals[i] = atoi(row[i]);
|
|
}
|
|
}
|
|
mysql_free_result(rp);
|
|
if (row == 0) return ERR_DB_NOT_FOUND;
|
|
return 0;
|
|
}
|
|
|
|
int DB_BASE::get_field_str(const char* field, char* buf, int buflen) {
|
|
char query[MAX_QUERY_LEN];
|
|
int retval;
|
|
MYSQL_ROW row;
|
|
MYSQL_RES* rp;
|
|
|
|
sprintf(query,
|
|
"select %s from %s where id=%u", field, table_name, get_id()
|
|
);
|
|
retval = db->do_query(query);
|
|
if (retval) return retval;
|
|
rp = mysql_store_result(db->mysql);
|
|
if (!rp) return -1;
|
|
row = mysql_fetch_row(rp);
|
|
if (row && row[0]) {
|
|
strlcpy(buf, row[0], buflen);
|
|
}
|
|
mysql_free_result(rp);
|
|
if (row == 0) return ERR_DB_NOT_FOUND;
|
|
return 0;
|
|
}
|
|
|
|
int DB_BASE::max_id(int& n, const char* clause) {
|
|
char query[MAX_QUERY_LEN];
|
|
sprintf(query, "select max(id) from %s %s", table_name, clause);
|
|
return get_integer(query, n);
|
|
}
|
|
|
|
/////////////// FUNCTIONS THAT DON'T REQUIRE AN ID FIELD ///////////////
|
|
|
|
int DB_BASE::lookup(const char* clause) {
|
|
char query[MAX_QUERY_LEN];
|
|
int retval;
|
|
MYSQL_ROW row;
|
|
MYSQL_RES* rp;
|
|
|
|
sprintf(query, "select * from %s %s", table_name, clause);
|
|
|
|
retval = db->do_query(query);
|
|
if (retval) return retval;
|
|
rp = mysql_store_result(db->mysql);
|
|
if (!rp) return -1;
|
|
row = mysql_fetch_row(rp);
|
|
if (row) db_parse(row);
|
|
mysql_free_result(rp);
|
|
if (row == 0) return ERR_DB_NOT_FOUND;
|
|
return 0;
|
|
}
|
|
|
|
int DB_BASE::update_fields_noid(const char* set_clause, const char* where_clause) {
|
|
char query[MAX_QUERY_LEN];
|
|
sprintf(query,
|
|
"update %s set %s where %s",
|
|
table_name, set_clause, where_clause
|
|
);
|
|
int retval = db->do_query(query);
|
|
if (retval) return retval;
|
|
return 0;
|
|
}
|
|
|
|
int DB_BASE::enumerate(const char* clause, bool use_use_result) {
|
|
int x;
|
|
char query[MAX_QUERY_LEN];
|
|
MYSQL_ROW row;
|
|
|
|
if (!cursor.active) {
|
|
cursor.active = true;
|
|
|
|
sprintf(query, "select * from %s %s", table_name, clause);
|
|
|
|
x = db->do_query(query);
|
|
if (x) return mysql_errno(db->mysql);
|
|
|
|
// if you use mysql_use_result() here,
|
|
// any other transactions will fail
|
|
//
|
|
if (use_use_result) {
|
|
cursor.rp = mysql_use_result(db->mysql);
|
|
} else {
|
|
cursor.rp = mysql_store_result(db->mysql);
|
|
}
|
|
if (!cursor.rp) return mysql_errno(db->mysql);
|
|
}
|
|
row = mysql_fetch_row(cursor.rp);
|
|
if (!row) {
|
|
mysql_free_result(cursor.rp);
|
|
cursor.active = false;
|
|
x = mysql_errno(db->mysql);
|
|
if (x) return x;
|
|
return ERR_DB_NOT_FOUND;
|
|
} else {
|
|
db_parse(row);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// call this to end an enumeration before reaching end
|
|
//
|
|
int DB_BASE::end_enumerate() {
|
|
if (cursor.active) {
|
|
mysql_free_result(cursor.rp);
|
|
cursor.active = false;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int DB_BASE::get_integer(const char* query, int& n) {
|
|
int retval;
|
|
MYSQL_ROW row;
|
|
MYSQL_RES* resp;
|
|
|
|
retval = db->do_query(query);
|
|
if (retval) return retval;
|
|
resp = mysql_store_result(db->mysql);
|
|
if (!resp) return ERR_DB_NOT_FOUND;
|
|
row = mysql_fetch_row(resp);
|
|
if (!row || !row[0]) {
|
|
retval = ERR_DB_NOT_FOUND;
|
|
} else {
|
|
n = atoi(row[0]);
|
|
}
|
|
mysql_free_result(resp);
|
|
return retval;
|
|
}
|
|
|
|
int DB_BASE::get_double(const char* query, double& x) {
|
|
int retval;
|
|
MYSQL_ROW row;
|
|
MYSQL_RES* resp;
|
|
|
|
retval = db->do_query(query);
|
|
if (retval) return retval;
|
|
resp = mysql_store_result(db->mysql);
|
|
if (!resp) return ERR_DB_NOT_FOUND;
|
|
row = mysql_fetch_row(resp);
|
|
if (!row || !row[0]) {
|
|
retval = ERR_DB_NOT_FOUND;
|
|
} else {
|
|
x = atof(row[0]);
|
|
}
|
|
mysql_free_result(resp);
|
|
return retval;
|
|
}
|
|
|
|
int DB_BASE::count(int& n, const char* clause) {
|
|
char query[MAX_QUERY_LEN];
|
|
|
|
sprintf(query, "select count(*) from %s %s", table_name, clause);
|
|
|
|
return get_integer(query, n);
|
|
}
|
|
|
|
int DB_BASE::sum(double& x, const char* field, const char* clause) {
|
|
char query[MAX_QUERY_LEN];
|
|
|
|
sprintf(query, "select sum(%s) from %s %s", field, table_name, clause);
|
|
|
|
return get_double(query, x);
|
|
}
|
|
|
|
DB_BASE_SPECIAL::DB_BASE_SPECIAL(DB_CONN* p) : db(p) {
|
|
}
|
|
|
|
// convert a string into a form that allows it to be used
|
|
// in SQL queries delimited by single quotes:
|
|
// replace ' with \', '\' with '\\'
|
|
//
|
|
void escape_string(char* field, int len) {
|
|
char buf[MAX_QUERY_LEN];
|
|
char* q = buf, *p = field;
|
|
|
|
if (len > MAX_QUERY_LEN) {
|
|
len = MAX_QUERY_LEN;
|
|
}
|
|
|
|
// Make sure that final result won't overflow field[].
|
|
//
|
|
while (*p && q < buf+len-3) {
|
|
if (*p == '\'') {
|
|
// this does ' to \' transformation
|
|
//
|
|
*q++ = '\\';
|
|
*q++ = '\'';
|
|
} else if (*p == '\\') {
|
|
// this does \ to \\ transformation
|
|
//
|
|
*q++ = '\\';
|
|
*q++ = '\\';
|
|
} else {
|
|
// this handles all other characters
|
|
//
|
|
*q++ = *p;
|
|
}
|
|
p++;
|
|
}
|
|
*q = 0;
|
|
strlcpy(field, buf, len);
|
|
}
|
|
|
|
// undo the above process
|
|
// (len not used because this doesn't expand the string)
|
|
//
|
|
void unescape_string(char* p, int /*len*/) {
|
|
char* q = p;
|
|
while (*p) {
|
|
if (*p == '\\') {
|
|
p++;
|
|
if (!*p) break; // SHOULD NEVER HAPPEN!
|
|
}
|
|
*q++ = *p++;
|
|
}
|
|
*q='\0';
|
|
}
|
|
|
|
// replace _ with \\_, % with \\%
|
|
//
|
|
void escape_mysql_like_pattern(const char* in, char* out) {
|
|
while (*in) {
|
|
if (*in == '_' || *in == '%') {
|
|
*out++ = '\\';
|
|
*out++ = '\\';
|
|
}
|
|
*out++ = *in++;
|
|
}
|
|
}
|
|
|
|
const char *BOINC_RCSID_43d919556b = "$Id$";
|