Asterisk - The Open Source Telephony Project GIT-master-f36a736
Functions | Variables
app_transfer.c File Reference
Dial plan applications

Transfer a caller. More...

#include "asterisk.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/app.h"
#include "asterisk/channel.h"
Include dependency graph for app_transfer.c:

Go to the source code of this file.

Functions

static void __reg_module (void)
 
static void __unreg_module (void)
 
struct ast_module * AST_MODULE_SELF_SYM (void)
 
static int load_module (void)
 
static int transfer_exec (struct ast_channel *chan, const char *data)
 
static int unload_module (void)
 

Variables

static struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Transfers a caller to another extension" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, .support_level = AST_MODULE_SUPPORT_CORE, }
 
static const char *const app = "Transfer"
 
static const struct ast_module_info * ast_module_info = &__mod_info
 

Detailed Description

Transfer a caller.

Author
Mark Spencer marks.nosp@m.ter@.nosp@m.digiu.nosp@m.m.co.nosp@m.m

Requires transfer support from channel driver

Definition in file app_transfer.c.

Function Documentation

◆ __reg_module()

static void __reg_module ( void  )
static

Definition at line 166 of file app_transfer.c.

◆ __unreg_module()

static void __unreg_module ( void  )
static

Definition at line 166 of file app_transfer.c.

◆ AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM ( void  )

Definition at line 166 of file app_transfer.c.

◆ load_module()

static int load_module ( void  )
static

Definition at line 161 of file app_transfer.c.

162{
163 return ast_register_application_xml(app, transfer_exec);
164}
app
static const char *const app
Definition: app_transfer.c:85
transfer_exec
static int transfer_exec(struct ast_channel *chan, const char *data)
Definition: app_transfer.c:87
ast_register_application_xml
#define ast_register_application_xml(app, execute)
Register an application using XML documentation.
Definition: module.h:640

References app, ast_register_application_xml, and transfer_exec().

◆ transfer_exec()

static int transfer_exec ( struct ast_channel *  chan,
const char *  data 
)
static

Definition at line 87 of file app_transfer.c.

88{
89 int res;
90 int len;
91 char *slash;
92 char *tech = NULL;
93 char *dest = NULL;
94 char *status;
95 char *parse;
96 int protocol = 0;
97 char status_protocol[20];
98 AST_DECLARE_APP_ARGS(args,
99 AST_APP_ARG(dest);
100 );
101
102 if (ast_strlen_zero((char *)data)) {
103 ast_log(LOG_WARNING, "Transfer requires an argument ([Tech/]destination)\n");
104 pbx_builtin_setvar_helper(chan, "TRANSFERSTATUS", "FAILURE");
105 snprintf(status_protocol, sizeof(status_protocol), "%d", protocol);
106 pbx_builtin_setvar_helper(chan, "TRANSFERSTATUSPROTOCOL", status_protocol);
107 return 0;
108 } else
109 parse = ast_strdupa(data);
110
111 AST_STANDARD_APP_ARGS(args, parse);
112
113 dest = args.dest;
114
115 if ((slash = strchr(dest, '/')) && (len = (slash - dest))) {
116 tech = dest;
117 dest = slash + 1;
118 /* Allow execution only if the Tech/destination agrees with the type of the channel */
119 if (strncasecmp(ast_channel_tech(chan)->type, tech, len)) {
120 pbx_builtin_setvar_helper(chan, "TRANSFERSTATUS", "FAILURE");
121 snprintf(status_protocol, sizeof(status_protocol), "%d", protocol);
122 pbx_builtin_setvar_helper(chan, "TRANSFERSTATUSPROTOCOL", status_protocol);
123 return 0;
124 }
125 }
126
127 /* Check if the channel supports transfer before we try it */
128 if (!ast_channel_tech(chan)->transfer) {
129 pbx_builtin_setvar_helper(chan, "TRANSFERSTATUS", "UNSUPPORTED");
130 snprintf(status_protocol, sizeof(status_protocol), "%d", protocol);
131 pbx_builtin_setvar_helper(chan, "TRANSFERSTATUSPROTOCOL", status_protocol);
132 return 0;
133 }
134
135 /* New transfer API returns a protocol code
136 SIP example, 0 = success, 3xx-6xx are sip error codes for the REFER */
137 res = ast_transfer_protocol(chan, dest, &protocol);
138
139 if (res < 0) {
140 status = "FAILURE";
141 res = 0;
142 } else {
143 status = "SUCCESS";
144 res = 0;
145 }
146
147 snprintf(status_protocol, sizeof(status_protocol), "%d", protocol);
148 ast_debug(1, "ast_transfer channel %s TRANSFERSTATUS=%s, TRANSFERSTATUSPROTOCOL=%s\n",
149 ast_channel_name(chan), status, status_protocol);
150 pbx_builtin_setvar_helper(chan, "TRANSFERSTATUS", status);
151 pbx_builtin_setvar_helper(chan, "TRANSFERSTATUSPROTOCOL", status_protocol);
152
153 return res;
154}
status
jack_status_t status
Definition: app_jack.c:146
ast_strdupa
#define ast_strdupa(s)
duplicate a string in memory from the stack
Definition: astmm.h:298
ast_log
#define ast_log
Definition: astobj2.c:42
type
static const char type[]
Definition: chan_ooh323.c:109
transfer
static int transfer(void *data)
Definition: chan_pjsip.c:2132
ast_channel_name
const char * ast_channel_name(const struct ast_channel *chan)
ast_transfer_protocol
int ast_transfer_protocol(struct ast_channel *chan, char *dest, int *protocol)
Transfer a channel (if supported) receieve protocol result.
Definition: channel.c:6517
ast_channel_tech
const struct ast_channel_tech * ast_channel_tech(const struct ast_channel *chan)
Definition: channel_internal_api.c:770
len
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
Definition: func_strings.c:1567
AST_APP_ARG
#define AST_APP_ARG(name)
Define an application argument.
Definition: include/asterisk/app.h:1230
AST_DECLARE_APP_ARGS
#define AST_DECLARE_APP_ARGS(name, arglist)
Declare a structure to hold an application's arguments.
Definition: include/asterisk/app.h:1247
AST_STANDARD_APP_ARGS
#define AST_STANDARD_APP_ARGS(args, parse)
Performs the 'standard' argument separation process for an application.
Definition: include/asterisk/app.h:1283
ast_debug
#define ast_debug(level,...)
Log a DEBUG message.
Definition: include/asterisk/logger.h:457
LOG_WARNING
#define LOG_WARNING
Definition: include/asterisk/logger.h:281
pbx_builtin_setvar_helper
int pbx_builtin_setvar_helper(struct ast_channel *chan, const char *name, const char *value)
Add a variable to the channel variable stack, removing the most recently set value for the same name.
Definition: pbx_variables.c:1188
NULL
#define NULL
Definition: resample.c:96
ast_strlen_zero
static force_inline int attribute_pure ast_strlen_zero(const char *s)
Definition: strings.h:65
args
const char * args
Definition: test_func_file.c:46

References args, AST_APP_ARG, ast_channel_name(), ast_channel_tech(), ast_debug, AST_DECLARE_APP_ARGS, ast_log, AST_STANDARD_APP_ARGS, ast_strdupa, ast_strlen_zero(), ast_transfer_protocol(), len(), LOG_WARNING, NULL, pbx_builtin_setvar_helper(), status, transfer(), and type.

Referenced by load_module().

◆ unload_module()

static int unload_module ( void  )
static

Definition at line 156 of file app_transfer.c.

157{
158 return ast_unregister_application(app);
159}
ast_unregister_application
int ast_unregister_application(const char *app)
Unregister an application.
Definition: pbx_app.c:392

References app, and ast_unregister_application().

Variable Documentation

◆ __mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Transfers a caller to another extension" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, .support_level = AST_MODULE_SUPPORT_CORE, }
static

Definition at line 166 of file app_transfer.c.

◆ app

const char* const app = "Transfer"
static

Definition at line 85 of file app_transfer.c.

Referenced by load_module(), and unload_module().

◆ ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info
static

Definition at line 166 of file app_transfer.c.

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