mirror of
https://github.com/netfun2000/lcd4linux.git
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[lcd4linux @ 2005-05-08 04:32:43 by reinelt]
CodingStyle added and applied git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@547 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
This commit is contained in:
reinelt
240
plugin_mysql.c
240
plugin_mysql.c
@@ -1,4 +1,4 @@
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/* $Id: plugin_mysql.c,v 1.5 2005/04/01 05:16:04 reinelt Exp $
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/* $Id: plugin_mysql.c,v 1.6 2005/05/08 04:32:44 reinelt Exp $
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*
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* plugin for execute SQL queries into a MySQL DBSM.
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*
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@@ -23,6 +23,9 @@
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*
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*
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* $Log: plugin_mysql.c,v $
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* Revision 1.6 2005/05/08 04:32:44 reinelt
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* CodingStyle added and applied
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*
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* Revision 1.5 2005/04/01 05:16:04 reinelt
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* moved plugin init stuff to a seperate function called on first use
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*
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@@ -84,141 +87,142 @@ static MYSQL conex;
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static char Section[] = "Plugin:MySQL";
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static int configure_mysql (void)
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static int configure_mysql(void)
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{
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static int configured = 0;
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static int configured = 0;
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char server[256];
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unsigned int port;
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char user[128];
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char password[256];
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char database[256];
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char *s;
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if (configured != 0) return configured;
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char server[256];
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unsigned int port;
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char user[128];
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char password[256];
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char database[256];
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char *s;
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s = cfg_get (Section, "server", "localhost");
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if (*s=='\0') {
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info ("[MySQL] empty '%s.server' entry from %s, assuming 'localhost'", Section, cfg_source());
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strcpy(server,"localhost");
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}
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else strcpy(server,s);
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free(s);
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if (cfg_number(Section, "port", 0, 1, 65536, &port)<1) {
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/* using 0 as default port because mysql_real_connect() will convert it to real default one */
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info ("[MySQL] no '%s.port' entry from %s using MySQL's default", Section, cfg_source());
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}
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s = cfg_get (Section, "user", "");
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if (*s=='\0') {
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/* If user is NULL or the empty string "", the lcd4linux Unix user is assumed. */
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info ("[MySQL] empty '%s.user' entry from %s, assuming lcd4linux owner", Section, cfg_source());
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strcpy(user,"");
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}
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else strcpy(user,s);
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free(s);
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s = cfg_get (Section, "password","");
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/* Do not encrypt the password because encryption is handled automatically by the MySQL client API. */
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if (*s=='\0') {
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info ("[MySQL] empty '%s.password' entry in %s, assuming none", Section, cfg_source());
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strcpy(password,"");
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}
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else strcpy(password,s);
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free(s);
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s = cfg_get (Section, "database", "");
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if (*s=='\0') {
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error ("[MySQL] no '%s:database' entry from %s, specify one", Section, cfg_source());
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free (s);
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configured = -1;
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return configured;
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}
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strcpy(database,s);
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free(s);
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mysql_init(&conex);
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if (!mysql_real_connect(&conex,server,user,password,database,port,NULL,0)) {
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error( "[MySQL] conection error: %s",mysql_error(&conex));
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configured = -1;
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return configured;
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}
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if (configured != 0)
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return configured;
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configured = 1;
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return configured;
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}
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s = cfg_get(Section, "server", "localhost");
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if (*s == '\0') {
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info("[MySQL] empty '%s.server' entry from %s, assuming 'localhost'", Section, cfg_source());
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strcpy(server, "localhost");
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} else
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strcpy(server, s);
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free(s);
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static void my_MySQLquery (RESULT *result, RESULT *query)
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{
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char *q;
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double value;
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MYSQL_RES *res;
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if (configure_mysql() < 0) {
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value = -1;
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SetResult(&result, R_NUMBER, &value);
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return;
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}
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q = R2S(query);
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/* mysql_ping(MYSQL *mysql) checks whether the connection to the server is working. */
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/* If it has gone down, an automatic reconnection is attempted. */
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mysql_ping(&conex);
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if (mysql_real_query(&conex,q,(unsigned int) strlen(q))) {
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error( "[MySQL] query error: %s",mysql_error(&conex));
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value = -1;
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} else {
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/* We don't use res=mysql_use_result(); because mysql_num_rows() will not */
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/* return the correct value until all the rows in the result set have been retrieved */
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/* with mysql_fetch_row(), so we use res=mysql_store_result(); instead */
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res=mysql_store_result(&conex);
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value = (double) mysql_num_rows(res);
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mysql_free_result(res);
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}
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SetResult(&result, R_NUMBER, &value);
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}
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static void my_MySQLstatus (RESULT *result)
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{
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char *value = "";
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char *status;
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if (configure_mysql > 0) {
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mysql_ping(&conex);
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status=mysql_stat(&conex);
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if (!status) {
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error( "[MySQL] status error: %s",mysql_error(&conex));
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value="error";
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} else {
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value = status;
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if (cfg_number(Section, "port", 0, 1, 65536, &port) < 1) {
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/* using 0 as default port because mysql_real_connect() will convert it to real default one */
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info("[MySQL] no '%s.port' entry from %s using MySQL's default", Section, cfg_source());
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}
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}
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SetResult(&result, R_STRING, value);
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s = cfg_get(Section, "user", "");
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if (*s == '\0') {
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/* If user is NULL or the empty string "", the lcd4linux Unix user is assumed. */
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info("[MySQL] empty '%s.user' entry from %s, assuming lcd4linux owner", Section, cfg_source());
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strcpy(user, "");
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} else
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strcpy(user, s);
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free(s);
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s = cfg_get(Section, "password", "");
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/* Do not encrypt the password because encryption is handled automatically by the MySQL client API. */
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if (*s == '\0') {
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info("[MySQL] empty '%s.password' entry in %s, assuming none", Section, cfg_source());
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strcpy(password, "");
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} else
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strcpy(password, s);
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free(s);
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s = cfg_get(Section, "database", "");
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if (*s == '\0') {
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error("[MySQL] no '%s:database' entry from %s, specify one", Section, cfg_source());
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free(s);
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configured = -1;
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return configured;
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}
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strcpy(database, s);
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free(s);
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mysql_init(&conex);
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if (!mysql_real_connect(&conex, server, user, password, database, port, NULL, 0)) {
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error("[MySQL] conection error: %s", mysql_error(&conex));
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configured = -1;
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return configured;
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}
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configured = 1;
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return configured;
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}
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static void my_MySQLquery(RESULT * result, RESULT * query)
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{
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char *q;
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double value;
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MYSQL_RES *res;
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if (configure_mysql() < 0) {
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value = -1;
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SetResult(&result, R_NUMBER, &value);
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return;
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}
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q = R2S(query);
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/* mysql_ping(MYSQL *mysql) checks whether the connection to the server is working. */
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/* If it has gone down, an automatic reconnection is attempted. */
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mysql_ping(&conex);
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if (mysql_real_query(&conex, q, (unsigned int) strlen(q))) {
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error("[MySQL] query error: %s", mysql_error(&conex));
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value = -1;
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} else {
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/* We don't use res=mysql_use_result(); because mysql_num_rows() will not */
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/* return the correct value until all the rows in the result set have been retrieved */
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/* with mysql_fetch_row(), so we use res=mysql_store_result(); instead */
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res = mysql_store_result(&conex);
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value = (double) mysql_num_rows(res);
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mysql_free_result(res);
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}
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SetResult(&result, R_NUMBER, &value);
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}
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static void my_MySQLstatus(RESULT * result)
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{
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char *value = "";
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char *status;
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if (configure_mysql > 0) {
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mysql_ping(&conex);
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status = mysql_stat(&conex);
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if (!status) {
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error("[MySQL] status error: %s", mysql_error(&conex));
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value = "error";
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} else {
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value = status;
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}
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}
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SetResult(&result, R_STRING, value);
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}
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#endif
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int plugin_init_mysql (void)
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int plugin_init_mysql(void)
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{
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#ifdef HAVE_MYSQL_MYSQL_H
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AddFunction ("MySQL::query", 1, my_MySQLquery);
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AddFunction ("MySQL::status", 0, my_MySQLstatus);
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AddFunction("MySQL::query", 1, my_MySQLquery);
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AddFunction("MySQL::status", 0, my_MySQLstatus);
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#endif
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return 0;
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return 0;
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}
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void plugin_exit_mysql(void)
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void plugin_exit_mysql(void)
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{
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#ifdef HAVE_MYSQL_MYSQL_H
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mysql_close(&conex);
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mysql_close(&conex);
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#endif
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}
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