commit 09d0be81bbc95caf323b2ce3da8bf4f1ee8aa9d4
Author: Natanael Copa <ncopa@alpinelinux.org>
Date:   Tue Aug 24 13:13:34 2010 +0000

    add support for sqlite

diff --git a/modules_k/db_sqlite/Makefile b/modules_k/db_sqlite/Makefile
new file mode 100644
index 0000000..9a75593
--- /dev/null
+++ b/modules_k/db_sqlite/Makefile
@@ -0,0 +1,15 @@
+# $Id$
+#
+# WARNING: do not run this directly, it should be run by the master Makefile
+
+include ../../Makefile.defs
+auto_gen=
+NAME=db_sqlite.so
+
+LIBS +=-lsqlite3
+
+DEFS+=-DOPENSER_MOD_INTERFACE
+
+SERLIBPATH=../../lib
+SER_LIBS+=$(SERLIBPATH)/srdb1/srdb1
+include ../../Makefile.modules
diff --git a/modules_k/db_sqlite/db_sqlite.c b/modules_k/db_sqlite/db_sqlite.c
new file mode 100644
index 0000000..1ec1267
--- /dev/null
+++ b/modules_k/db_sqlite/db_sqlite.c
@@ -0,0 +1,92 @@
+/*
+ * $Id$
+ *
+ * SQlite module interface
+ *
+ * Copyright (C) 2010 Timo Teräs
+ *
+ * This file is part of Kamailio, a free SIP server.
+ *
+ * Kamailio 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 2 of the License, or
+ * (at your option) any later version
+ *
+ * Kamailio 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <sys/time.h>
+#include <sqlite3.h>
+
+#include "../../sr_module.h"
+#include "../../lib/srdb1/db.h"
+#include "dbase.h"
+
+MODULE_VERSION
+
+static int sqlite_bind_api(db_func_t *dbb)
+{
+	if(dbb==NULL)
+		return -1;
+
+	memset(dbb, 0, sizeof(db_func_t));
+
+	dbb->use_table		= db_sqlite_use_table;
+	dbb->init		= db_sqlite_init;
+	dbb->close		= db_sqlite_close;
+	dbb->free_result	= db_sqlite_free_result;
+	dbb->query		= db_sqlite_query;
+	dbb->insert		= db_sqlite_insert;
+	dbb->delete		= db_sqlite_delete; 
+	dbb->update		= db_sqlite_update;
+#if 0
+	dbb->raw_query		= db_oracle_raw_query;
+#endif
+
+	return 0;
+}
+
+static cmd_export_t cmds[] = {
+	{"db_bind_api", (cmd_function)sqlite_bind_api, 0, 0, 0, 0},
+	{0, 0, 0, 0, 0, 0}
+};
+
+static int sqlite_mod_init(void)
+{
+	sqlite3_initialize();
+
+	LM_INFO("SQlite library version %s (compiled using %s)\n",
+		sqlite3_libversion(),
+		SQLITE_VERSION);
+	return 0;
+}
+
+
+static void sqlite_mod_destroy(void)
+{
+	LM_INFO("SQlite terminate\n");
+
+	sqlite3_shutdown();
+}
+
+struct module_exports exports = {
+	"db_sqlite",
+	DEFAULT_DLFLAGS,	/* dlopen flags */
+	cmds,			/* module commands */
+	0,			/* module parameters */
+	0,			/* exported statistics */
+	0,			/* exported MI functions */
+	0,			/* exported pseudo-variables */
+	0,			/* extra processes */
+	sqlite_mod_init,	/* module initialization function */
+	0,			/* response function*/
+	sqlite_mod_destroy,	/* destroy function */
+	0			/* per-child init function */
+};
diff --git a/modules_k/db_sqlite/dbase.c b/modules_k/db_sqlite/dbase.c
new file mode 100644
index 0000000..9ae1bdb
--- /dev/null
+++ b/modules_k/db_sqlite/dbase.c
@@ -0,0 +1,504 @@
+/*
+ * $Id$
+ *
+ * SQlite module core functions
+ *
+ * Copyright (C) 2010 Timo Teräs
+ *
+ * This file is part of Kamailio, a free SIP server.
+ *
+ * Kamailio 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 2 of the License, or
+ * (at your option) any later version
+ *
+ * Kamailio 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "../../mem/mem.h"
+#include "../../dprint.h"
+#include "../../lib/srdb1/db_pool.h"
+#include "../../lib/srdb1/db_ut.h"
+#include "../../lib/srdb1/db_res.h"
+#include "../../lib/srdb1/db_query.h"
+#include "dbase.h"
+
+static time_t sqlite_to_timet(double rT)
+{
+	return 86400.0*(rT - 2440587.5) + 0.5;
+}
+
+static double timet_to_sqlite(time_t t)
+{
+	return ((((double) t) - 0.5) / 86400.0) + 2440587.5;
+}
+
+/*
+ * Initialize database module
+ * No function should be called before this
+ */
+
+static struct sqlite_connection * db_sqlite_new_connection(const struct db_id* id)
+{
+	struct sqlite_connection *con;
+	int rc;
+
+	con = pkg_malloc(sizeof(*con));
+	if (!con) {
+		LM_ERR("failed to allocate driver connection\n");
+		return NULL;
+	}
+
+	memset(con, 0, sizeof(*con));
+	con->hdr.ref = 1;
+	con->hdr.id = (struct db_id*) id; /* set here - freed on error */
+
+	rc = sqlite3_open_v2(id->database, &con->conn,
+		SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL);
+	if (rc != SQLITE_OK) {
+		pkg_free(con);
+		LM_ERR("failed to open sqlite database '%s'\n", id->database);
+		return NULL;
+	}
+
+	return con;
+}
+
+db1_con_t* db_sqlite_init(const str* _url)
+{
+	return db_do_init(_url, (void *) db_sqlite_new_connection);
+}
+
+
+/*
+ * Shut down database module
+ * No function should be called after this
+ */
+
+static void db_sqlite_free_connection(struct sqlite_connection* con)
+{
+	if (!con) return;
+
+	sqlite3_close(con->conn);
+	free_db_id(con->hdr.id);
+	pkg_free(con);
+}
+
+void db_sqlite_close(db1_con_t* _h)
+{
+	db_do_close(_h, db_sqlite_free_connection);
+}
+
+/*
+ * Release a result set from memory
+ */
+int db_sqlite_free_result(db1_con_t* _h, db1_res_t* _r)
+{
+	if (!_h || !_r) {
+		LM_ERR("invalid parameter value\n");
+		return -1;
+	}
+
+	if (db_free_result(_r) < 0)
+	{
+		LM_ERR("failed to free result structure\n");
+		return -1;
+	}
+	return 0;
+}
+
+/*
+ * Store name of table that will be used by
+ * subsequent database functions
+ */
+int db_sqlite_use_table(db1_con_t* _h, const str* _t)
+{
+	return db_use_table(_h, _t);
+}
+
+/*
+ * Reset query context
+ */
+static void db_sqlite_cleanup_query(const db1_con_t* _c)
+{
+	struct sqlite_connection *conn = CON_SQLITE(_c);
+	int rc;
+
+	if (conn->stmt != NULL) {
+		rc = sqlite3_finalize(conn->stmt);
+		if (rc != SQLITE_OK)
+			LM_ERR("finalize failed: %s\n",
+				sqlite3_errmsg(conn->conn));
+	}
+
+	conn->stmt = NULL;
+	conn->bindpos = 0;
+}
+
+/*
+ * Convert value to sql-string as db bind index
+ */
+static int db_sqlite_val2str(const db1_con_t* _c, const db_val_t* _v, char* _s, int* _len)
+{
+	struct sqlite_connection *conn;
+	int ret;
+
+	if (!_c || !_v || !_s || !_len || *_len <= 0) {
+		LM_ERR("invalid parameter value\n");
+		return -1;
+	}
+
+	conn = CON_SQLITE(_c);
+	if (conn->bindpos >= DB_SQLITE_MAX_BINDS) {
+		LM_ERR("too many bindings, recompile with larger DB_SQLITE_MAX_BINDS\n");
+		return -2;
+	}
+
+	conn->bindarg[conn->bindpos] = _v;
+	ret = snprintf(_s, *_len, "?%u", ++conn->bindpos);
+	if ((unsigned)ret >= (unsigned) *_len)
+		return -11;
+
+	*_len = ret;
+	return 0;
+}
+
+/*
+ * Send an SQL query to the server
+ */
+static int db_sqlite_submit_query(const db1_con_t* _h, const str* _s)
+{
+	struct sqlite_connection *conn = CON_SQLITE(_h);
+	sqlite3_stmt *stmt;
+	const db_val_t *val;
+	int rc, i;
+
+	LM_DBG("submit_query: %.*s\n", _s->len, _s->s);
+
+	rc = sqlite3_prepare_v2(conn->conn, _s->s, _s->len, &stmt, NULL);
+	if (rc != SQLITE_OK) {
+		LM_ERR("failed to prepare statement: %s\n",
+			sqlite3_errmsg(conn->conn));
+		return -1;
+	}
+	conn->stmt = stmt;
+
+	for (i = 1; i <= conn->bindpos; i++) {
+		val = conn->bindarg[i-1];
+		if (VAL_NULL(val)) {
+			rc = sqlite3_bind_null(stmt, i);
+		} else switch (VAL_TYPE(val)) {
+		case DB1_INT:
+			rc = sqlite3_bind_int(stmt, i, VAL_INT(val));
+			break;
+		case DB1_BIGINT:
+			rc = sqlite3_bind_int64(stmt, i, VAL_BIGINT(val));
+			break;
+		case DB1_DOUBLE:
+			rc = sqlite3_bind_double(stmt, i, VAL_DOUBLE(val));
+			break;
+		case DB1_STRING:
+			rc = sqlite3_bind_text(stmt, i,
+				VAL_STRING(val), -1, NULL);
+			break;
+		case DB1_STR:
+			rc = sqlite3_bind_text(stmt, i,
+				VAL_STR(val).s, VAL_STR(val).len, NULL);
+			break;
+		case DB1_DATETIME:
+			rc = sqlite3_bind_double(stmt, i, timet_to_sqlite(VAL_TIME(val)));
+			break;
+		case DB1_BLOB:
+			rc = sqlite3_bind_blob(stmt, i,
+				VAL_BLOB(val).s, VAL_BLOB(val).len,
+				NULL);
+			break;
+		case DB1_BITMAP:
+			rc = sqlite3_bind_int(stmt, i, VAL_BITMAP(val));
+			break;
+		default:
+			LM_ERR("unknown bind value type %d\n", VAL_TYPE(val));
+			return -1;
+		}
+		if (rc != SQLITE_OK) {
+			LM_ERR("Parameter bind failed: %s\n",
+				sqlite3_errmsg(conn->conn));
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static int decltype_to_dbtype(const char *decltype)
+{
+	/* SQlite3 has dynamic typing. It does not store the actual
+	 * exact type, instead it uses 'affinity' depending on the
+	 * value. We have to go through the declaration types to see
+	 * what to return. */
+	if (strstr(decltype, "INT") != NULL ||
+	    strncasecmp(decltype, "SERIAL", 6) == 0)
+		return DB1_INT;
+	if (strstr(decltype, "CHAR") != NULL ||
+	    strstr(decltype, "TEXT") != NULL)
+		return DB1_STR;
+	if (strstr(decltype, "REAL") != NULL ||
+	    strstr(decltype, "FLOA") != NULL ||
+	    strstr(decltype, "DOUB") != NULL)
+		return DB1_DOUBLE;
+	if (strstr(decltype, "BLOB") != NULL)
+		return DB1_BLOB;
+	if (strncasecmp(decltype, "TIME", 4) == 0 ||
+	    strncasecmp(decltype, "DATE", 4) == 0)
+		return DB1_DATETIME;
+
+	LM_ERR("sqlite decltype '%s' not recognized, defaulting to int",
+	       decltype);
+	return DB1_INT;
+}
+
+static str* str_dup(const char *_s)
+{
+	str *s;
+	int len = strlen(_s);
+
+	s = (str*) pkg_malloc(sizeof(str)+len+1);
+	s->len = len;
+	s->s = ((char*)s) + sizeof(str);
+	memcpy(s->s, _s, len);
+	s->s[len] = '\0';
+
+	return s;
+}
+
+static void str_assign(str* s, const char *_s, int len)
+{
+	s->s = (char *) pkg_malloc(len);
+	s->len = len;
+	memcpy(s->s, _s, len);
+}
+
+/*
+ * Read database answer and fill the structure
+ */
+int db_sqlite_store_result(const db1_con_t* _h, db1_res_t** _r)
+{
+	struct sqlite_connection *conn = CON_SQLITE(_h);
+	db1_res_t *res;
+	int i, rc, num_rows = 0, num_alloc = 0;
+	db_row_t *rows = NULL, *row;
+	db_val_t *val;
+
+	res = db_new_result();
+	if (res == NULL)
+		goto no_mem;
+
+	while (1) {
+		rc = sqlite3_step(conn->stmt);
+		if (rc == SQLITE_DONE) {
+			*_r = res;
+			return 0;
+		}
+		if (rc != SQLITE_ROW) {
+			LM_INFO("sqlite3_step failed: %s\n", sqlite3_errmsg(conn->conn));
+			goto err;
+		}
+		if (num_rows == 0) {
+			/* get column types */
+			rc = sqlite3_column_count(conn->stmt);
+			if (db_allocate_columns(res, rc) != 0)
+				goto err;
+			RES_COL_N(res) = rc;
+
+			for (i = 0; i < RES_COL_N(res); i++) {
+				RES_NAMES(res)[i] = str_dup(sqlite3_column_name(conn->stmt, i));
+				RES_TYPES(res)[i] = decltype_to_dbtype(sqlite3_column_decltype(conn->stmt, i));
+			}
+		}
+		if (num_rows >= num_alloc) {
+			if (num_alloc)
+				num_alloc *= 2;
+			else
+				num_alloc = 8;
+			rows = pkg_realloc(rows, sizeof(db_row_t) * num_alloc);
+			if (rows == NULL)
+				goto no_mem;
+			RES_ROWS(res) = rows;
+		}
+
+		row = &RES_ROWS(res)[num_rows];
+		num_rows++;
+		RES_ROW_N(res) = num_rows;		/* rows in this result set */
+		RES_NUM_ROWS(res) = num_rows;		/* rows in total */
+
+		if (db_allocate_row(res, row) != 0)
+			goto no_mem;
+
+		for (i = 0, val = ROW_VALUES(row); i < RES_COL_N(res); i++, val++) {
+			VAL_TYPE(val) = RES_TYPES(res)[i];
+			VAL_NULL(val) = 0;
+			VAL_FREE(val) = 0;
+			if (sqlite3_column_type(conn->stmt, i) == SQLITE_NULL) {
+				VAL_NULL(val) = 1;
+			} else switch (VAL_TYPE(val)) {
+			case DB1_INT:
+				VAL_INT(val) = sqlite3_column_int(conn->stmt, i);
+				break;
+			case DB1_BIGINT:
+				VAL_BIGINT(val) = sqlite3_column_int64(conn->stmt, i);
+				break;
+			case DB1_STR:
+				str_assign(&VAL_STR(val),
+					(const char*) sqlite3_column_text(conn->stmt, i),
+					sqlite3_column_bytes(conn->stmt, i));
+				VAL_FREE(val) = 1;
+				break;
+			case DB1_DOUBLE:
+				VAL_DOUBLE(val) = sqlite3_column_double(conn->stmt, i);
+				break;
+			case DB1_DATETIME:
+				VAL_TIME(val) = sqlite_to_timet(sqlite3_column_double(conn->stmt, i));
+				break;
+			case DB1_BLOB:
+				str_assign(&VAL_BLOB(val),
+					(const char*) sqlite3_column_blob(conn->stmt, i),
+					sqlite3_column_bytes(conn->stmt, i));
+				VAL_FREE(val) = 1;
+				break;
+			default:
+				LM_ERR("unhandled db-type\n");
+				goto err;
+			}
+		}
+	}
+
+no_mem:
+	LM_ERR("no private memory left\n");
+err:
+	if (res)
+		db_free_result(res);
+	return -1;
+}
+
+/*
+ * Query table for specified rows
+ * _h: structure representing database connection
+ * _k: key names
+ * _op: operators
+ * _v: values of the keys that must match
+ * _c: column names to return
+ * _n: number of key=values pairs to compare
+ * _nc: number of columns to return
+ * _o: order by the specified column
+ */
+int db_sqlite_query(const db1_con_t* _h, const db_key_t* _k, const db_op_t* _op,
+		const db_val_t* _v, const db_key_t* _c, int _n, int _nc,
+		const db_key_t _o, db1_res_t** _r)
+{
+	int rc;
+
+	rc = db_do_query(_h, _k, _op, _v, _c, _n, _nc, _o, _r,
+			 db_sqlite_val2str,
+			 db_sqlite_submit_query,
+			 db_sqlite_store_result);
+	db_sqlite_cleanup_query(_h);
+
+	return rc;
+}
+
+static int db_sqlite_commit(const db1_con_t* _h)
+{
+	struct sqlite_connection *conn = CON_SQLITE(_h);
+	int rc;
+
+	rc = sqlite3_step(conn->stmt);
+	if (rc != SQLITE_DONE && rc != SQLITE_OK) {
+		LM_ERR("sqlite commit failed: %s\n",
+		       sqlite3_errmsg(conn->conn));
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * Insert a row into specified table
+ * _h: structure representing database connection
+ * _k: key names
+ * _v: values of the keys
+ * _n: number of key=value pairs
+ */
+int db_sqlite_insert(const db1_con_t* _h, const db_key_t* _k, const db_val_t* _v,
+		int _n)
+{
+	int rc = -1;
+
+	rc = db_do_insert(_h, _k, _v, _n,
+			  db_sqlite_val2str,
+			  db_sqlite_submit_query);
+	if (rc == 0)
+		rc = db_sqlite_commit(_h);
+	db_sqlite_cleanup_query(_h);
+
+	return rc;
+}
+
+
+/*
+ * Delete a row from the specified table
+ * _h: structure representing database connection
+ * _k: key names
+ * _o: operators
+ * _v: values of the keys that must match
+ * _n: number of key=value pairs
+ */
+int db_sqlite_delete(const db1_con_t* _h, const db_key_t* _k, const db_op_t* _o,
+		const db_val_t* _v, int _n)
+{
+	int rc;
+
+	rc = db_do_delete(_h, _k, _o, _v, _n,
+			  db_sqlite_val2str,
+			  db_sqlite_submit_query);
+	if (rc == 0)
+		rc = db_sqlite_commit(_h);
+	db_sqlite_cleanup_query(_h);
+
+	return rc;
+}
+
+
+/*
+ * Update some rows in the specified table
+ * _h: structure representing database connection
+ * _k: key names
+ * _o: operators
+ * _v: values of the keys that must match
+ * _uk: updated columns
+ * _uv: updated values of the columns
+ * _n: number of key=value pairs
+ * _un: number of columns to update
+ */
+int db_sqlite_update(const db1_con_t* _h, const db_key_t* _k, const db_op_t* _o,
+		const db_val_t* _v, const db_key_t* _uk, const db_val_t* _uv,
+		int _n, int _un)
+{
+	int rc;
+
+	rc = db_do_update(_h, _k, _o, _v, _uk, _uv, _n, _un,
+			  db_sqlite_val2str,
+			  db_sqlite_submit_query);
+	if (rc == 0)
+		rc = db_sqlite_commit(_h);
+	db_sqlite_cleanup_query(_h);
+
+	return rc;
+}
+
diff --git a/modules_k/db_sqlite/dbase.h b/modules_k/db_sqlite/dbase.h
new file mode 100644
index 0000000..d1e57f4
--- /dev/null
+++ b/modules_k/db_sqlite/dbase.h
@@ -0,0 +1,70 @@
+/*
+ * $Id$
+ *
+ * SQlite module core functions
+ *
+ * Copyright (C) 2010 Timo Teräs
+ *
+ * This file is part of Kamailio, a free SIP server.
+ *
+ * Kamailio 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 2 of the License, or
+ * (at your option) any later version
+ *
+ * Kamailio 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#ifndef DBASE_H
+#define DBASE_H
+
+#include <sqlite3.h>
+
+#include "../../lib/srdb1/db_pool.h"
+#include "../../lib/srdb1/db_con.h"
+#include "../../lib/srdb1/db_res.h"
+#include "../../lib/srdb1/db_key.h"
+#include "../../lib/srdb1/db_op.h"
+#include "../../lib/srdb1/db_val.h"
+
+#define DB_SQLITE_MAX_BINDS 64
+
+struct sqlite_connection {
+	struct pool_con hdr;
+
+	sqlite3 *conn;
+	int bindpos;
+
+	sqlite3_stmt *stmt;
+	const db_val_t *bindarg[DB_SQLITE_MAX_BINDS];
+};
+
+#define CON_SQLITE(db_con)	((struct sqlite_connection *) db_con->tail)
+
+db1_con_t* db_sqlite_init(const str* _sqlurl);
+void db_sqlite_close(db1_con_t* _h);
+
+int db_sqlite_free_result(db1_con_t* _h, db1_res_t* _r);
+
+int db_sqlite_query(const db1_con_t* _h, const db_key_t* _k, const db_op_t* _op,
+		const db_val_t* _v, const db_key_t* _c, int _n, int _nc,
+		const db_key_t _o, db1_res_t** _r);
+int db_sqlite_insert(const db1_con_t* _h, const db_key_t* _k, const db_val_t* _v,
+		int _n);
+int db_sqlite_delete(const db1_con_t* _h, const db_key_t* _k, const db_op_t* _o,
+		const db_val_t* _v, int _n);
+int db_sqlite_update(const db1_con_t* _h, const db_key_t* _k, const db_op_t* _o,
+		const db_val_t* _v, const db_key_t* _uk, const db_val_t* _uv,
+		int _n, int _un);
+int db_sqlite_use_table(db1_con_t* _h, const str* _t);
+
+
+#endif /* DBASE_H */