Added mysql client
This commit is contained in:
Fredric N
Henrik Hautakoski
parent
34e3eff9c4
commit
30fe0ce353
1 changed files with 417 additions and 0 deletions
417
src/client/mysql.c
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417
src/client/mysql.c
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/* client/mysql.c
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*
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* (C) Copyright 2010 Fredric Nilsson <fredric@fiktivkod.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <signal.h>
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#include <mysql/mysql.h>
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#include "../notify/notify.h"
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#include "../notify/event.h"
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#include "../common/xalloc.h"
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#include "../ini/iniparser.h"
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#include "../common/util.h"
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typedef struct {
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char *host;
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int port;
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char *username;
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char *password;
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char *database;
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char *table;
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unsigned long thread;
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MYSQL* connection;
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my_bool reconnect;
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} database;
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static database db;
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static dictionary *config = NULL;
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/* Only way to exit the application properly
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when in main loop is by signal */
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static void clean_exit(int excode) {
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time_t t = time(NULL);
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notify_exit();
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/* Clean mysql */
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int status = mysql_exit();
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if (0 != status) {
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fprintf(stderr,"%s",mysql_error(status));
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}
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/* Clean config */
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iniparser_freedict(config);
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printf("\nprocess exit at: %s", ctime(&t));
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exit(excode);
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}
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/* Signal handler */
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static void sighandl(int sig) {
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switch(sig) {
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/* normal exit signals */
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case SIGTERM :
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case SIGKILL :
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case SIGQUIT :
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case SIGINT :
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clean_exit(EXIT_SUCCESS);
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/* segmentation violation, let user now */
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case SIGSEGV :
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fprintf(stderr, "SEGFAULT: o no he didn't\n");
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clean_exit(EXIT_FAILURE);
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case SIGUSR1 :
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case SIGUSR2 :
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printf("notify stat:\n");
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notify_stat();
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/* don't know why, but everything goes bananas if we keep executing */
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clean_exit(EXIT_SUCCESS);
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}
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}
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/*
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* The main loop - read events from notify API
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*/
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void main_loop() {
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int status;
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notify_event *event;
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for(;;) {
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event = notify_read();
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if (event == NULL)
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continue;
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status = mysql_process(event);
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if (status)
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fprintf(stderr,"%s", mysql_error(status));
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notify_event_del(event);
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}
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}
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/*
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* Initialize database connection and connect to database
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*/
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int mysql_init() {
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/* Load database information from ini config */
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db.host = iniparser_getstring(config, "mysql:host", NULL);
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db.port = iniparser_getint(config, "mysql:port", 3306);
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db.username = iniparser_getstring(config, "mysql:username", NULL);
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db.password = iniparser_getstring(config, "mysql:password", NULL);
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db.database = iniparser_getstring(config, "mysql:database", NULL);
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db.table = iniparser_getstring(config, "mysql:table", NULL);
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/* Return exit code for missconfiguration */
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if (NULL == db.host)
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return 1;
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if (NULL == db.username)
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return 2;
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if (NULL == db.password)
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return 3;
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if (NULL == db.database)
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return 4;
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if (NULL == db.table)
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return 5;
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/* Enable reconnection */
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if (1 == iniparser_getboolean(config, "mysql:reconnect", 1)) {
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db.reconnect = 1;
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} else {
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db.reconnect = 0;
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}
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/* Init. database connection */
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db.connection = mysql_init(NULL);
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/* Set mysql options */
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mysql_options(db.connection, MYSQL_OPT_RECONNECT, &db.reconnect);
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/* Connect to database */
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if (!mysql_real_connect(db.connection, db.host, db.username, db.password, db.database, db.port, NULL, 0))
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return 6;
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/* Fix for mysql versions prior to 5.0.19 */
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mysql_options(db.connection, MYSQL_OPT_RECONNECT, &db.reconnect);
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/* Save mysql thread id */
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db.thread = mysql_thread_id(db.connection);
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#ifdef DB_DEBUG
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fprintf(stderr, "output_init(): %li\n", db.thread);
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#endif
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/* Setup database */
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return database_setup();
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}
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/*
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* Process events
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*/
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int mysql_process(notify_event *event) {
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int ret;
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char *stmt;
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/* Skip if event is unknown */
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if (NOTIFY_UNKNOWN == event->type)
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return 0;
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/* Insert new row in database */
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if (NOTIFY_CREATE == event->type) {
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char stmt_insert[] = "INSERT INTO `%s` (`Path`, `Base`, `Type`, `Status`, `Date`) VALUES('%s','%s','1','0', NOW())";
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if(mysql_ping(db.connection) != 0) {
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return 8;
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}
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stmt = xmalloc(strlen(stmt_insert) + strlen(db.table) + strlen(event->path) + strlen(event->filename) + 1);
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/* Escape paths */
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char *escaped_path = xmalloc(strlen(event->path) * 2 + 1);
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char *escaped_filename = xmalloc(strlen(event->filename) * 2 + 1);
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mysql_real_escape_string(db.connection, escaped_path, event->path, strlen(event->path));
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mysql_real_escape_string(db.connection, escaped_filename, event->filename, strlen(event->filename));
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/* Create mysql query */
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sprintf(stmt, stmt_insert, db.table, escaped_path, escaped_filename);
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/* Run mysql query */
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ret = mysql_query(db.connection, stmt);
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/* Clean up */
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free(stmt);
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free(escaped_path);
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free(escaped_filename);
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/* Delete row in database */
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} else if (NOTIFY_DELETE == event->type) {
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char stmt_delete[] = "DELETE FROM `%s` WHERE `Path` LIKE '%s%s%%' OR (`Path` = '%s' AND `Base` = '%s')";
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if(mysql_ping(db.connection) != 0) {
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return 8;
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}
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stmt = xmalloc(strlen(stmt_delete) + strlen(db.table) + strlen(event->path) + strlen(event->filename) + 1);
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/* Escape paths */
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char *escaped_path = xmalloc(strlen(event->path) * 2 + 1);
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char *escaped_filename = xmalloc(strlen(event->filename) * 2 + 1);
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mysql_real_escape_string(db.connection, escaped_path, event->path, strlen(event->path));
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mysql_real_escape_string(db.connection, escaped_filename, event->filename, strlen(event->filename));
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/* Create mysql query */
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sprintf(stmt, stmt_delete, db.table, escaped_path, escaped_filename, escaped_path, escaped_filename);
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/* Run mysql query */
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ret = mysql_query(db.connection, stmt);
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/* Clean up */
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free(stmt);
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free(escaped_path);
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free(escaped_filename);
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}
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/* Make sure query was successfull */
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if(ret != 0) {
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return 6;
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}
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#ifdef DB_DEBUG
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if(db.thread != mysql_thread_id(db.connection)) {
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fprintf(stderr, "Connection was lost. Reconnected. Old_Thread: %li, New_Thread: %li\n", db.thread, mysql_thread_id(db.connection));
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}
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#endif
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return 0;
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}
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/*
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* Close database connection
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*/
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int mysql_exit() {
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/* Close database connection */
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mysql_close(db.connection);
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/* Another leak fix */
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mysql_library_end();
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return 0;
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}
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/*
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* Converts error codes to string
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*/
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char *mysql_error(int error) {
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char *str;
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switch (error) {
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case 1:
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return "Missing 'host' in configuration";
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case 2:
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return "Missing 'username' in configuration";
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case 3:
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return "Missing 'password' in configuration";
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case 4:
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return "Missing 'database' in configuration";
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case 5:
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return "Missing 'table' in configuration";
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case 6:
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sprintf(str, "mysql error: %s", mysql_error(db.connection));
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return str;
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case 7:
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return "Error while creating table";
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case 8:
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return "Lost connection to database. Could not reconnect";
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case 9:
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return "Missing configuration";
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}
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return "Unkown error";
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}
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/*
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* Database setup
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*/
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static int database_setup() {
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int ret;
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/* Sql statements */
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char stmt_create[] = "CREATE TABLE IF NOT EXISTS `%s` ("
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"`Path` varchar(512) default NULL, "
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"`Base` varchar(512) default NULL, "
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"`Type` tinyint(1) default NULL, "
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"`Status` tinyint(1) default NULL, "
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"`Date` datetime default NULL, "
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"KEY `idx_path` (`Path`(333)), "
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"KEY `idx_base` (`Base`(333)) "
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") ENGINE=MyISAM DEFAULT CHARSET=utf8 ";
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char stmt_trunc[] = "TRUNCATE TABLE `%s`";
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/* Build query
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Notice: -1 for "%s" in stmt_create and \0 */
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char *stmt = (char *) xmalloc(strlen(stmt_create) + strlen(db.table) - 1);
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if (stmt == NULL || sprintf(stmt, stmt_create, db.table) < 0)
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return 7;
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/* Run mysql query */
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ret = mysql_query(db.connection, stmt);
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/* Make sure query was successfull */
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if (ret != 0) {
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free(stmt);
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return 6;
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}
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/* Build new query */
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stmt = (char *) xrealloc(stmt, strlen(stmt_trunc) + strlen(db.table) - 1);
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if (sprintf(stmt, stmt_trunc, db.table) < 0)
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return 8;
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/* Run mysql query */
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ret = mysql_query(db.connection, stmt);
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/* Make sure query was successfull */
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if (ret != 0) {
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free(stmt);
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return 6;
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}
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return 0;
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}
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int main(int argc, char** argv) {
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/* Return value */
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int ret;
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/* Validate arguments */
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if (argc != 2) {
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printf("Usage: %s <Root Directory>\n"
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"Root Directory - Path to indexroot. All subdirectories will be indexed.\n", argv[0]);
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return EXIT_FAILURE;
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}
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/* Load configuration */
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if (file_exists("config.ini")) {
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config = iniparser_load("config.ini");
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if (NULL == config) {
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fprintf(stderr, "Could not load configuration");
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return EXIT_FAILURE;
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}
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}
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/* Setup signal handlers */
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signal(SIGTERM, sighandl);
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signal(SIGKILL, sighandl);
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signal(SIGQUIT, sighandl);
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signal(SIGINT, sighandl);
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signal(SIGSEGV, sighandl);
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signal(SIGUSR1, sighandl);
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signal(SIGUSR2, sighandl);
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ret = output_init(config);
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if (ret) {
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fprintf(stderr, "%s", output_error(ret));
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return EXIT_FAILURE;
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}
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ret = notify_init();
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if (ret == -1)
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return EXIT_FAILURE;
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ret = notify_add_watch(argv[1]);
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if (ret == -1) {
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fprintf(stderr, "Invalid path: %s\n", argv[1]);
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return EXIT_FAILURE;
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}
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main_loop();
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return (EXIT_SUCCESS);
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}
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