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/* This file is part of vmod-dbrw
Copyright (C) 2013-2018 Sergey Poznyakoff
Vmod-dbrw is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
Vmod-dbrw 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with vmod-dbrw. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <syslog.h>
#include <regex.h>
#if VARNISHAPI_MAJOR > 5
# include "cache/cache.h"
# include "vcl.h"
# include "vcc_if.h"
#else
# include "vcl.h"
# include "vrt.h"
# include "vcc_if.h"
# include "cache/cache.h"
#endif
#define WSPTR(s) ((s)->ws)
struct dbrw_connection;
struct dbrw_backend {
char *name;
int (*sql_init) (struct dbrw_connection *);
void (*sql_destroy) (struct dbrw_connection *);
int (*sql_connect) (struct dbrw_connection *);
int (*sql_disconnect) (struct dbrw_connection *);
char *(*sql_escape) (struct dbrw_connection *, const char *);
int (*sql_query) (struct dbrw_connection *, const char *);
unsigned (*sql_num_tuples) (struct dbrw_connection *);
unsigned (*sql_num_fields) (struct dbrw_connection *);
int (*sql_free_result) (struct dbrw_connection *);
const char *(*sql_get_column)(struct dbrw_connection *, size_t, size_t);
int (*sql_idle_timeout)(struct dbrw_connection *);
};
enum {
state_init,
state_connected,
state_result,
state_error,
state_disabled
};
#define HTTP_STATUS_LEN 3
struct dbrw_config {
unsigned magic;
#define DBRW_CONFIG_MAGIC 0x67636667
int debug_level;
struct dbrw_backend *backend;
char **param;
char *param_str;
char *query;
int qdisp;
int regflags;
int match_type;
char status[HTTP_STATUS_LEN+1];
int idle_timeout;
VTAILQ_ENTRY(dbrw_config) list;
};
struct dbrw_connection {
unsigned magic;
#define DBRW_CONNECTION_MAGIC 0x6773716c
int state; /* Connection state */
int busy:1;
struct dbrw_config *conf; /* Pointer to the configuration data */
regmatch_t *matches; /* Match map */
size_t matchsize; /* Total number of entries in match map */
time_t timestamp; /* Last used at */
void *data; /* Backend-specific data */
VTAILQ_ENTRY(dbrw_connection) list;
};
void dbrw_debug(const char *fmt, ...);
void dbrw_error(const char *fmt, ...);
#define debug(c,n,a) do { if ((c)->debug_level>=(n)) dbrw_debug a; } while (0)
#ifdef USE_SQL_MYSQL
struct dbrw_backend mysql_backend;
#endif
#ifdef USE_SQL_PGSQL
struct dbrw_backend pgsql_backend;
#endif
struct dbrw_backend *dbrw_backend_select(const char *name);
int sql_init(struct dbrw_connection *);
int sql_connect(struct dbrw_connection *pd);
void sql_disconnect(struct dbrw_connection *pd);
char *sql_escape(struct dbrw_connection *pd, const char *input);
int sql_query(struct dbrw_connection *pd, const char *input);
unsigned sql_num_tuples(struct dbrw_connection *pd);
unsigned sql_num_fields(struct dbrw_connection *pd);
void sql_free_result(struct dbrw_connection *pd);
void sql_destroy(struct dbrw_connection *pd);
const char *sql_get_column(struct dbrw_connection *pd, unsigned row, unsigned col);
int sql_idle_timeout(struct dbrw_connection *conn);
char *findparam(char **params, char *name);
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