astdb2sqlite3.c File Reference

Berkeley DB to SQLite3 converter. More...

#include "asterisk.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sqlite3.h>
#include <libgen.h>
#include "db1-ast/include/db.h"

Include dependency graph for astdb2sqlite3.c:

Go to the source code of this file.

Macros
#define	DEFINE_SQL_STATEMENT(stmt, sql)
#define	MAX_DB_FIELD   256
#define	MIN(a, b)

Functions
static int	ast_db_begin_transaction (void)
static int	ast_db_commit_transaction (void)
static int	ast_db_rollback_transaction (void)
static int	convert_bdb_to_sqlite3 (const char *bdb_dbname)
static int	db_create_astdb (void)
static int	db_open (const char *dbname)
static int	db_put_raw (const char *key, size_t keylen, const char *value, size_t valuelen)
	DEFINE_SQL_STATEMENT (put_stmt, "INSERT OR REPLACE INTO astdb (key, value) VALUES (?, ?)")
static int	init_statements (void)
static int	init_stmt (sqlite3_stmt **stmt, const char *sql, size_t len)
int	main (int argc, char *argv[])
static int	sql_db_init (const char *dbname)

Variables
static sqlite3 *	astdb

Detailed Description

Berkeley DB to SQLite3 converter.

Author

Terry Wilson twils.nosp@m.on@d.nosp@m.igium.nosp@m..com

Definition in file astdb2sqlite3.c.

Macro Definition Documentation

DEFINE_SQL_STATEMENT

#define DEFINE_SQL_STATEMENT	(		stmt,
			sql
	)

Value:

static sqlite3_stmt *stmt; \
   const char stmt##_sql[] = sql;

Definition at line 49 of file astdb2sqlite3.c.

MAX_DB_FIELD

#define MAX_DB_FIELD   256

Definition at line 41 of file astdb2sqlite3.c.

Referenced by convert_bdb_to_sqlite3().

MIN

#define MIN	(		a,
			b
	)

Value:

({ typeof (a) _a = (a); \
   typeof (b) _b = (b); \
   a < _b ? _a : _b; })

Definition at line 42 of file astdb2sqlite3.c.

Referenced by convert_bdb_to_sqlite3().

Function Documentation

ast_db_begin_transaction()

static int ast_db_begin_transaction ( void  )

static

Definition at line 70 of file astdb2sqlite3.c.

Referenced by db_create_astdb().

{
   return db_execute_transaction_sql("BEGIN TRANSACTION");
}

ast_db_commit_transaction()

static int ast_db_commit_transaction ( void  )

static

Definition at line 75 of file astdb2sqlite3.c.

Referenced by db_create_astdb().

{
   return db_execute_transaction_sql("COMMIT");
}

ast_db_rollback_transaction()

static int ast_db_rollback_transaction ( void  )

static

Definition at line 80 of file astdb2sqlite3.c.

Referenced by db_create_astdb().

{
   return db_execute_transaction_sql("ROLLBACK");
}

convert_bdb_to_sqlite3()

static int convert_bdb_to_sqlite3 ( const char *  bdb_dbname )

static

Definition at line 104 of file astdb2sqlite3.c.

References AST_FILE_MODE, bdb, DBT::data, DB_BTREE, db_put_raw(), dbopen(), last, MAX_DB_FIELD, MIN, NULL, R_FIRST, R_LAST, R_NEXT, DBT::size, and value.

Referenced by main().

{
   DB *bdb;
   DBT key = { 0, }, value = { 0, }, last_key = { 0, };
   int res, last = 0;
   char last_key_s[MAX_DB_FIELD];

   if (!(bdb = dbopen(bdb_dbname, O_RDONLY, AST_FILE_MODE, DB_BTREE, NULL))) {
      fprintf(stderr, "Unable to open Asterisk database '%s'\n", bdb_dbname);
      return -1;
   }

   if (bdb->seq(bdb, &last_key, &value, R_LAST)) {
      /* Empty database */
      return 0;
   }

   memcpy(last_key_s, last_key.data, MIN(last_key.size - 1, sizeof(last_key_s)));
   last_key_s[last_key.size - 1] = '\0';
   for (res = bdb->seq(bdb, &key, &value, R_FIRST);
         !res; res = bdb->seq(bdb, &key, &value, R_NEXT)) {
      last = !strcmp(key.data, last_key_s);
      db_put_raw((const char *) key.data, key.size - 1, (const char *) value.data, value.size - 1);
      if (last) {
         break;
      }
   }

   bdb->close(bdb);

   return 0;
}

db_create_astdb()

static int db_create_astdb ( void  )

static

Definition at line 147 of file astdb2sqlite3.c.

References ast_db_begin_transaction(), ast_db_commit_transaction(), ast_db_rollback_transaction(), astdb, and init_stmt().

Referenced by sql_db_init().

{
   if (init_stmt(&create_astdb_stmt, create_astdb_stmt_sql, sizeof(create_astdb_stmt_sql))) {
      return -1;
   }

   ast_db_begin_transaction();
   if (sqlite3_step(create_astdb_stmt) != SQLITE_DONE) {
      fprintf(stderr, "Couldn't create astdb table: %s\n", sqlite3_errmsg(astdb));
      ast_db_rollback_transaction();
      sqlite3_reset(create_astdb_stmt);
      return -1;
   }

   ast_db_commit_transaction();
   sqlite3_reset(create_astdb_stmt);

   return 0;
}

db_open()

static int db_open ( const char *  dbname )

static

Definition at line 174 of file astdb2sqlite3.c.

References astdb.

Referenced by sql_db_init().

{
   if (sqlite3_open(dbname, &astdb) != SQLITE_OK) {
      fprintf(stderr, "Unable to open Asterisk database '%s': %s\n", dbname, sqlite3_errmsg(astdb));
      sqlite3_close(astdb);
      return -1;
   }

   return 0;
}

db_put_raw()

static int db_put_raw ( const char *  key, size_t  keylen, const char *  value, size_t  valuelen  )

static

Definition at line 85 of file astdb2sqlite3.c.

References astdb.

Referenced by convert_bdb_to_sqlite3().

{
   int res = 0;

   if (sqlite3_bind_text(put_stmt, 1, key, keylen, SQLITE_STATIC) != SQLITE_OK) {
      fprintf(stderr, "Couldn't bind key to stmt: %s\n", sqlite3_errmsg(astdb));
      res = -1;
   } else if (sqlite3_bind_text(put_stmt, 2, value, valuelen, SQLITE_STATIC) != SQLITE_OK) {
      fprintf(stderr, "Couldn't bind value to stmt: %s\n", sqlite3_errmsg(astdb));
      res = -1;
   } else if (sqlite3_step(put_stmt) != SQLITE_DONE) {
      fprintf(stderr, "Couldn't execute statement: %s\n", sqlite3_errmsg(astdb));
      res = -1;
   }
   sqlite3_reset(put_stmt);

   return res;
}

DEFINE_SQL_STATEMENT()

DEFINE_SQL_STATEMENT	(	put_stmt	,
		"INSERT OR REPLACE INTO astdb (key, value) VALUES (?, ?)"
	)

Definition at line 52 of file astdb2sqlite3.c.

References astdb, and NULL.

{
   char *errmsg = NULL;
   int res =0;

   sqlite3_exec(astdb, sql, NULL, NULL, &errmsg);
   if (errmsg) {
      fprintf(stderr, "Error executing SQL: %s\n", errmsg);
      sqlite3_free(errmsg);
      res = -1;
   }

   return res;
}

init_statements()

static int init_statements ( void  )

static

Definition at line 167 of file astdb2sqlite3.c.

References init_stmt().

Referenced by sql_db_init().

{
   /* Don't initialize create_astdb_statement here as the astdb table needs to exist
    * brefore these statements can be initialized */
   return init_stmt(&put_stmt, put_stmt_sql, sizeof(put_stmt_sql));
}

init_stmt()

static int init_stmt ( sqlite3_stmt **  stmt, const char *  sql, size_t  len  )

static

Definition at line 137 of file astdb2sqlite3.c.

References astdb, and NULL.

Referenced by db_create_astdb(), and init_statements().

{
   if (sqlite3_prepare(astdb, sql, len, stmt, NULL) != SQLITE_OK) {
      fprintf(stderr, "Couldn't prepare statement '%s': %s\n", sql, sqlite3_errmsg(astdb));
      return -1;
   }

   return 0;
}

main()

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 194 of file astdb2sqlite3.c.

References astdb, convert_bdb_to_sqlite3(), dbname, errno, and sql_db_init().

{
   char *dbname;
   struct stat dont_care;

   if (argc != 2) {
      fprintf(stderr, "%s takes the path of astdb as its only argument\n", basename(argv[0]));
      exit(-1);
   }

   if (stat(argv[1], &dont_care)) {
      fprintf(stderr, "Unable to open %s: %s\n", argv[1], strerror(errno));
      exit(-1);
   }

   if (!(dbname = alloca(strlen(argv[1]) + sizeof(".sqlite3")))) {
      exit(-1);
   }

   strcpy(dbname, argv[1]);
   strcat(dbname, ".sqlite3");

   if (!stat(dbname, &dont_care)) {
      fprintf(stderr, "%s already exists!\n", dbname);
      exit(-1);
   }

   if (sql_db_init(dbname)) {
      exit(-1);
   }

   if (convert_bdb_to_sqlite3(argv[1])) {
      fprintf(stderr, "Database conversion failed!\n");
      exit(-1);
      sqlite3_close(astdb);
   }

   sqlite3_close(astdb);
   return 0;
}

sql_db_init()

static int sql_db_init ( const char *  dbname )

static

Definition at line 185 of file astdb2sqlite3.c.

References db_create_astdb(), db_open(), and init_statements().

Referenced by main().

{
   if (db_open(dbname) || db_create_astdb() || init_statements()) {
      return -1;
   }

   return 0;
}

Variable Documentation

astdb

sqlite3* astdb

static

Definition at line 47 of file astdb2sqlite3.c.

Referenced by db_create_astdb(), db_open(), db_put_raw(), DEFINE_SQL_STATEMENT(), init_stmt(), and main().