source: freewrt/package/asterisk/patches/asterisk-1.2.0-app_mysql.patch@ 428f140

apps/app_sql_mysql.c

@@ +1 @@
+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * Connect to MySQL
+ * 
+ * Copyright (C) 2004, Constantine Filin and Christos Ricudis
+ *
+ * Christos Ricudis <ricudis@itc.auth.gr>
+ * Constantine Filin <cf@intermedia.net>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <mysql.h>
+
+#include <asterisk/file.h>
+#include <asterisk/logger.h>
+#include <asterisk/channel.h>
+#include <asterisk/pbx.h>
+#include <asterisk/module.h>
+#include <asterisk/linkedlists.h>
+#include <asterisk/chanvars.h>
+#include <asterisk/lock.h>
+
+#define EXTRA_LOG 0
+
+static char *tdesc = "Simple Mysql Interface";
+
+static char *app = "MYSQL";
+
+static char *synopsis = "Do several mySQLy things";
+
+static char *descrip = 
+"MYSQL():  Do several mySQLy things\n"
+"Syntax:\n"
+"  MYSQL(Connect connid dhhost dbuser dbpass dbname)\n"
+"    Connects to a database.  Arguments contain standard MySQL parameters\n"
+"    passed to function mysql_real_connect.  Connection identifer returned\n"
+"    in ${var}\n"
+"  MYSQL(Query resultid ${connid} query-string)\n"
+"    Executes standard MySQL query contained in query-string using established\n"
+"    connection identified by ${connection_identifier}. Result of query is\n"
+"    is stored in ${var}.\n"
+"  MYSQL(Fetch fetchid ${resultid} var1 var2 ... varN)\n"
+"    Fetches a single row from a result set contained in ${result_identifier}.\n"
+"    Assigns returned fields to ${var1} ... ${varn}.  ${fetchid} is set TRUE\n"
+"    if additional rows exist in result set.\n"
+"  MYSQL(Clear ${resultid})\n"
+"    Frees memory and datastructures associated with result set.\n" 
+"  MYSQL(Disconnect ${connid})\n"
+"    Disconnects from named connection to MySQL.\n"
+"  On exit, always returns 0. Sets MYSQL_STATUS to 0 on success and -1 on error.\n";
+
+/*      
+EXAMPLES OF USE : 
+
+exten => s,2,MYSQL(Connect connid localhost asterisk mypass credit)
+exten => s,3,MYSQL(Query resultid ${connid} SELECT username,credit FROM credit WHERE callerid=${CALLERIDNUM})
+exten => s,4,MYSQL(Fetch fetchid ${resultid} datavar1 datavar2)
+exten => s,5,GotoIf(${fetchid}?6:8)
+exten => s,6,Festival("User ${datavar1} currently has credit balance of ${datavar2} dollars.")  
+exten => s,7,Goto(s,4)
+exten => s,8,MYSQL(Clear ${resultid})
+exten => s,9,MYSQL(Disconnect ${connid})
+*/
+
+STANDARD_LOCAL_USER;
+LOCAL_USER_DECL;
+
+AST_MUTEX_DEFINE_STATIC(_mysql_mutex);
+
+#define AST_MYSQL_ID_DUMMY   0
+#define AST_MYSQL_ID_CONNID  1
+#define AST_MYSQL_ID_RESID   2
+#define AST_MYSQL_ID_FETCHID 3
+
+struct ast_MYSQL_id {
+        int identifier_type; /* 0=dummy, 1=connid, 2=resultid */
+        int identifier;
+        void *data;
+        AST_LIST_ENTRY(ast_MYSQL_id) entries;
+} *ast_MYSQL_id;
+
+AST_LIST_HEAD(MYSQLidshead,ast_MYSQL_id) _mysql_ids_head;
+
+/* helpful procs */
+static void *find_identifier(int identifier,int identifier_type) {
+        struct MYSQLidshead *headp;
+        struct ast_MYSQL_id *i;
+        void *res=NULL;
+        int found=0;
+        
+        headp=&_mysql_ids_head;
+        
+        if (AST_LIST_LOCK(headp)) {
+                ast_log(LOG_WARNING,"Unable to lock identifiers list\n");
+        } else {
+                AST_LIST_TRAVERSE(headp,i,entries) {
+                        if ((i->identifier==identifier) && (i->identifier_type==identifier_type)) {
+                                found=1;
+                                res=i->data;
+                                break;
+                        }
+                }
+                if (!found) {
+                        ast_log(LOG_WARNING,"Identifier %d, identifier_type %d not found in identifier list\n",identifier,identifier_type);
+                }
+                AST_LIST_UNLOCK(headp);
+        }
+        
+        return res;
+}
+
+static int add_identifier(int identifier_type,void *data) {
+        struct ast_MYSQL_id *i,*j;
+        struct MYSQLidshead *headp;
+        int maxidentifier=0;
+        
+        headp=&_mysql_ids_head;
+        i=NULL;
+        j=NULL;
+        
+        if (AST_LIST_LOCK(headp)) {
+                ast_log(LOG_WARNING,"Unable to lock identifiers list\n");
+                return(-1);
+        } else {
+                i=malloc(sizeof(struct ast_MYSQL_id));
+                AST_LIST_TRAVERSE(headp,j,entries) {
+                        if (j->identifier>maxidentifier) {
+                                maxidentifier=j->identifier;
+                        }
+                }
+                i->identifier=maxidentifier+1;
+                i->identifier_type=identifier_type;
+                i->data=data;
+                AST_LIST_INSERT_HEAD(headp,i,entries);
+                AST_LIST_UNLOCK(headp);
+        }
+        return i->identifier;
+}
+
+static int del_identifier(int identifier,int identifier_type) {
+        struct ast_MYSQL_id *i;
+        struct MYSQLidshead *headp;
+        int found=0;
+        
+        headp=&_mysql_ids_head;
+        
+        if (AST_LIST_LOCK(headp)) {
+                ast_log(LOG_WARNING,"Unable to lock identifiers list\n");
+        } else {
+                AST_LIST_TRAVERSE(headp,i,entries) {
+                        if ((i->identifier==identifier) && 
+                            (i->identifier_type==identifier_type)) {
+                                AST_LIST_REMOVE(headp,i,entries);
+                                free(i);
+                                found=1;
+                                break;
+                        }
+                }
+                AST_LIST_UNLOCK(headp);
+        }
+                        
+        if (found==0) {
+                ast_log(LOG_WARNING,"Could not find identifier %d, identifier_type %d in list to delete\n",identifier,identifier_type);
+                return(-1);
+        } else {
+                return(0);
+        }
+}
+
+static int set_asterisk_int(struct ast_channel *chan, char *varname, int id) {
+        if( id>=0 ) {
+                char s[100] = "";
+                snprintf(s, sizeof(s)-1, "%d", id);
+#if EXTRA_LOG
+                ast_log(LOG_WARNING,"MYSQL: setting var '%s' to value '%s'\n",varname,s);
+#endif
+                pbx_builtin_setvar_helper(chan,varname,s);
+        }
+        return id;
+}
+
+static int add_identifier_and_set_asterisk_int(struct ast_channel *chan, char *varname, int identifier_type, void *data) {
+        return set_asterisk_int(chan,varname,add_identifier(identifier_type,data));
+}
+
+static int safe_scan_int( char** data, char* delim, int def ) {
+        char* end;
+        int res = def;
+        char* s = strsep(data,delim);
+        if( s ) {
+                res = strtol(s,&end,10);
+                if (*end) res = def;  /* not an integer */
+        }
+        return res;
+}
+
+/* MYSQL operations */
+static int aMYSQL_connect(struct ast_channel *chan, char *data) {
+        
+        MYSQL *mysql;
+
+        char *connid_var;
+        char *dbhost;
+        char *dbuser;
+        char *dbpass;
+        char *dbname;
+         
+        strsep(&data," "); // eat the first token, we already know it :P 
+
+        connid_var=strsep(&data," ");
+        dbhost=strsep(&data," ");
+        dbuser=strsep(&data," ");
+        dbpass=strsep(&data," ");
+        dbname=strsep(&data,"\n");
+        
+        if( connid_var && dbhost && dbuser && dbpass && dbname ) {
+                mysql = mysql_init(NULL);
+                if (mysql) {
+                        if (mysql_real_connect(mysql,dbhost,dbuser,dbpass,dbname,0,NULL,0)) {
+                                add_identifier_and_set_asterisk_int(chan,connid_var,AST_MYSQL_ID_CONNID,mysql);
+                                return 0;
+                        }
+                        else {
+                                ast_log(LOG_WARNING,"mysql_real_connect(mysql,%s,%s,dbpass,%s,...) failed\n",dbhost,dbuser,dbname);
+                        }
+                }
+                else {
+                        ast_log(LOG_WARNING,"myslq_init returned NULL\n");
+                }
+        }
+        else {
+                ast_log(LOG_WARNING,"MYSQL(connect is missing some arguments\n");
+        }
+
+        return -1;
+}
+
+static int aMYSQL_query(struct ast_channel *chan, char *data) {
+        
+        MYSQL       *mysql;
+        MYSQL_RES   *mysqlres;
+
+        char *resultid_var;
+        int connid;
+        char *querystring;
+
+        strsep(&data," "); // eat the first token, we already know it :P 
+
+        resultid_var = strsep(&data," ");
+        connid       = safe_scan_int(&data," ",-1);
+        querystring  = strsep(&data,"\n");
+
+        if (resultid_var && (connid>=0) && querystring) {
+                if ((mysql=find_identifier(connid,AST_MYSQL_ID_CONNID))!=NULL) {
+                        mysql_query(mysql,querystring);
+                        if ((mysqlres=mysql_use_result(mysql))!=NULL) {
+                                add_identifier_and_set_asterisk_int(chan,resultid_var,AST_MYSQL_ID_RESID,mysqlres);
+                                return 0;
+                        }
+                        else if( mysql_field_count(mysql)==0 ) {
+                                return 0;  // See http://dev.mysql.com/doc/mysql/en/mysql_field_count.html
+                        }
+                        else {
+                                ast_log(LOG_WARNING,"aMYSQL_query: mysql_store_result() failed on query %s\n",querystring);
+                        }
+                }
+                else {
+                        ast_log(LOG_WARNING,"aMYSQL_query: Invalid connection identifier %d passed in aMYSQL_query\n",connid);
+                }
+        }
+        else {
+                ast_log(LOG_WARNING,"aMYSQL_query: missing some arguments\n");
+        }
+        
+        return -1;
+}
+
+
+static int aMYSQL_fetch(struct ast_channel *chan, char *data) {
+        
+        MYSQL_RES *mysqlres;
+        MYSQL_ROW mysqlrow;
+
+        char *fetchid_var,*s5,*s6;
+        int resultid,numFields,j;
+        
+        strsep(&data," "); // eat the first token, we already know it :P 
+
+        fetchid_var = strsep(&data," ");
+        resultid    = safe_scan_int(&data," ",-1);
+
+        if (fetchid_var && (resultid>=0) ) {
+                if ((mysqlres=find_identifier(resultid,AST_MYSQL_ID_RESID))!=NULL) {
+                        /* Grab the next row */
+                        if ((mysqlrow=mysql_fetch_row(mysqlres))!=NULL) {
+                                numFields=mysql_num_fields(mysqlres);
+                                for (j=0;j<numFields;j++) {
+                                        s5=strsep(&data," ");
+                                        if (s5==NULL) {
+                                                ast_log(LOG_WARNING,"ast_MYSQL_fetch: More fields (%d) than variables (%d)\n",numFields,j);
+                                                break;
+                                        }
+                                        s6=mysqlrow[j];
+                                        pbx_builtin_setvar_helper(chan,s5, s6 ? s6 : "NULL");
+                                }
+#ifdef EXTRA_LOG
+                                ast_log(LOG_WARNING,"ast_MYSQL_fetch: numFields=%d\n",numFields);
+#endif
+                                set_asterisk_int(chan,fetchid_var,1); // try more rows
+                        } else {
+#if EXTRA_LOG
+                                ast_log(LOG_WARNING,"ast_MYSQL_fetch : EOF\n");
+#endif
+                                set_asterisk_int(chan,fetchid_var,0); // no more rows
+                        }
+                        return 0;
+                }
+                else {
+                        ast_log(LOG_WARNING,"aMYSQL_fetch: Invalid result identifier %d passed\n",resultid);
+                }
+        }
+        else {
+                ast_log(LOG_WARNING,"aMYSQL_fetch: missing some arguments\n");
+        }
+
+        return -1;
+}
+
+static int aMYSQL_clear(struct ast_channel *chan, char *data) {
+
+        MYSQL_RES *mysqlres;
+
+        int id;
+        strsep(&data," "); // eat the first token, we already know it :P 
+        id = safe_scan_int(&data," \n",-1);
+        if ((mysqlres=find_identifier(id,AST_MYSQL_ID_RESID))==NULL) {
+                ast_log(LOG_WARNING,"Invalid result identifier %d passed in aMYSQL_clear\n",id);
+        } else {
+                mysql_free_result(mysqlres);
+                del_identifier(id,AST_MYSQL_ID_RESID);
+        }
+
+        return 0;
+}
+
+static int aMYSQL_disconnect(struct ast_channel *chan, char *data) {
+        
+        MYSQL *mysql;
+        int id;
+        strsep(&data," "); // eat the first token, we already know it :P 
+
+        id = safe_scan_int(&data," \n",-1);
+        if ((mysql=find_identifier(id,AST_MYSQL_ID_CONNID))==NULL) {
+                ast_log(LOG_WARNING,"Invalid connection identifier %d passed in aMYSQL_disconnect\n",id);
+        } else {
+                mysql_close(mysql);
+                del_identifier(id,AST_MYSQL_ID_CONNID);
+        } 
+
+        return 0;
+}
+
+static int MYSQL_exec(struct ast_channel *chan, void *data)
+{
+        struct localuser *u;
+        int result;
+        char sresult[10];
+
+#if EXTRA_LOG
+        fprintf(stderr,"MYSQL_exec: data=%s\n",(char*)data);
+#endif
+
+        if (!data) {
+                ast_log(LOG_WARNING, "APP_MYSQL requires an argument (see manual)\n");
+                return -1;
+        }
+
+        LOCAL_USER_ADD(u);
+        result=0;
+
+        ast_mutex_lock(&_mysql_mutex);
+
+        if (strncasecmp("connect",data,strlen("connect"))==0) {
+                result=aMYSQL_connect(chan,ast_strdupa(data));
+        } else  if (strncasecmp("query",data,strlen("query"))==0) {
+                result=aMYSQL_query(chan,ast_strdupa(data));
+        } else  if (strncasecmp("fetch",data,strlen("fetch"))==0) {
+                result=aMYSQL_fetch(chan,ast_strdupa(data));
+        } else  if (strncasecmp("clear",data,strlen("clear"))==0) {
+                result=aMYSQL_clear(chan,ast_strdupa(data));
+        } else  if (strncasecmp("disconnect",data,strlen("disconnect"))==0) {
+                result=aMYSQL_disconnect(chan,ast_strdupa(data));
+        } else {
+                ast_log(LOG_WARNING, "Unknown argument to MYSQL application : %s\n",(char *)data);
+                result=-1;      
+        }
+                
+        ast_mutex_unlock(&_mysql_mutex);
+
+        LOCAL_USER_REMOVE(u);                                                                                
+        snprintf(sresult, sizeof(sresult), "%d", result);
+        pbx_builtin_setvar_helper(chan, "MYSQL_STATUS", sresult);
+        return 0;
+}
+
+int unload_module(void)
+{
+        STANDARD_HANGUP_LOCALUSERS;
+        return ast_unregister_application(app);
+}
+
+int load_module(void)
+{
+        struct MYSQLidshead *headp = &_mysql_ids_head;
+        AST_LIST_HEAD_INIT(headp);
+        return ast_register_application(app, MYSQL_exec, synopsis, descrip);
+}
+
+char *description(void)
+{
+        return tdesc;
+}
+
+int usecount(void)
+{
+        int res;
+        STANDARD_USECOUNT(res);
+        return res;
+}
+
+char *key()
+{
+        return ASTERISK_GPL_KEY;
+}