Database stuffs

This commit is contained in:
dcp1990 2005-06-18 20:23:45 +00:00
parent 5642053be7
commit e21cf6c543

134
phoned/db.c Normal file
View File

@ -0,0 +1,134 @@
/*
* Copyright (c) 2005, Dan Ponte
*
* db.c - database stuff, currently for SQLite
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* $Amigan: phoned/phoned/db.c,v 1.1 2005/06/18 20:23:45 dcp1990 Exp $ */
#include <stdio.h>
#include <string.h>
#include <pthread.h>
/* sqlite 3 */
#include <sqlite3.h>
#include <phoned.h>
#define USERS_TABLE "users"
#define CALLS_TABLE "calls"
pthread_mutex_t dbmx = PTHREAD_MUTEX_INITIALIZER;
sqlite3 *db; /* lock this shiat, bizzatch */
short db_check_for_table(tablename, dbh) /* needs to be locked before use!!!!!!! */
char *tablename;
sqlite3 *dbh;
{
const char *tail;
const unsigned char *result;
sqlite3_stmt *cst;
const char* const sql = "SELECT name FROM sqlite_master WHERE type='table'"; /* check for the table in the master table */
int rc;
if((rc = sqlite3_prepare(dbh, sql, strlen(sql), &cst, &tail)) != SQLITE_OK) {
lprintf(error, "db_check_for_table(%s, 0x%p): error in prepare: %s\n", tablename, dbh, sqlite3_errmsg(dbh));
return 0;
}
while((rc = sqlite3_step(cst)) == SQLITE_ROW) {
result = sqlite3_column_text(cst, 0);
if(strcmp(result, tablename) == 0) {
sqlite3_finalize(cst);
return 1;
}
}
if(rc != SQLITE_OK && rc != SQLITE_DONE) {
lprintf(error, "db_check_for_table(%s, 0x%p): error after loop: %s\n", tablename, dbh, sqlite3_errmsg(dbh));
return 0;
}
sqlite3_finalize(cst);
return 0;
}
short db_create_calls_table(dbh)
sqlite3 *dbh;
{
int rc;
char *emsg;
const char* const sql =
"CREATE TABLE " CALLS_TABLE " (id INTEGER PRIMARY KEY, dtime INTEGER, number TEXT, name TEXT, ciddate TEXT, cidtime TEXT)";
rc = sqlite3_exec(dbh, sql, NULL, NULL, &emsg);
if(rc != SQLITE_OK) {
lprintf(error, "db_create_calls_table(0x%p): error: %s\n", dbh, emsg);
sqlite3_free(emsg);
return 0;
}
return 1;
}
short db_create_users_table(dbh)
sqlite3 *dbh;
{
int rc;
char *emsg;
const char* const sql =
"CREATE TABLE " USERS_TABLE " (id INTEGER PRIMARY KEY, login TEXT, passmd5 TEXT, privlvl INTEGER)";
rc = sqlite3_exec(dbh, sql, NULL, NULL, &emsg);
if(rc != SQLITE_OK) {
lprintf(error, "db_create_users_table(0x%p): error: %s\n", dbh, emsg);
sqlite3_free(emsg);
return 0;
}
return 1;
}
short db_init(dbfilename)
char *dbfilename;
{
int rc;
pthread_mutex_lock(&dbmx);
if((rc = sqlite3_open(dbfilename, &db))) {
lprintf(error, "sqlite engine: Error opening database %s: %s\n", dbfilename, sqlite3_errmsg(db));
sqlite3_close(db);
pthread_mutex_unlock(&dbmx);
return 0;
}
if(!db_check_for_table(USERS_TABLE, db)) {
lprintf(warn, "WARNING: users table didn't exist, you will likely be denied access!\n");
if(!db_create_users_table(db)) {
pthread_mutex_unlock(&dbmx);
return 0;
}
}
if(!db_check_for_table(CALLS_TABLE, db)) {
lprintf(info, "Calls table didn't exist, creating...\n");
if(!db_create_calls_table(db)) {
pthread_mutex_unlock(&dbmx);
return 0;
}
}
pthread_mutex_unlock(&dbmx);
lprintf(info, "Database opened.\n");
return 1;
}