1 /*
2 * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
3 * Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
4 *
5 * Version: MPL 1.1
6 *
7 * The contents of this file are subject to the Mozilla Public License Version
8 * 1.1 (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
10 * http://www.mozilla.org/MPL/
11 *
12 * Software distributed under the License is distributed on an "AS IS" basis,
13 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14 * for the specific language governing rights and limitations under the
15 * License.
16 *
17 * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
18 *
19 * The Initial Developer of the Original Code is
20 * Anthony Minessale II <anthm@freeswitch.org>
21 * Portions created by the Initial Developer are Copyright (C)
22 * the Initial Developer. All Rights Reserved.
23 *
24 * Contributor(s):
25 *
26 * Marc Olivier Chouinard <mochouinard@moctel.com>
27 *
28 *
29 * mod_abstraction.c -- Abstraction
30 *
31 */
32 #include <switch.h>
33
34 /* Prototypes */
35 SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_abstraction_shutdown);
36 SWITCH_MODULE_RUNTIME_FUNCTION(mod_abstraction_runtime);
37 SWITCH_MODULE_LOAD_FUNCTION(mod_abstraction_load);
38
39 const char *global_cf = "abstraction.conf";
40
41 /* SWITCH_MODULE_DEFINITION(name, load, shutdown, runtime)
42 * Defines a switch_loadable_module_function_table_t and a static const char[] modname
43 */
44 SWITCH_MODULE_DEFINITION(mod_abstraction, mod_abstraction_load, mod_abstraction_shutdown, NULL);
45
SWITCH_STANDARD_API(api_abstraction_function)46 SWITCH_STANDARD_API(api_abstraction_function)
47 {
48 const char *api_name = switch_event_get_header(stream->param_event, "API-Command");
49 switch_xml_t cfg, xml, x_apis, x_api;
50
51 if (!(xml = switch_xml_open_cfg(global_cf, &cfg, NULL))) {
52 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Open of %s failed\n", global_cf);
53 goto end;
54 }
55
56 if (!(x_apis = switch_xml_child(cfg, "apis"))) {
57 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No apis group\n");
58 goto end;
59 }
60
61 if ((x_api = switch_xml_find_child_multi(x_apis, "api", "name", api_name , NULL))) {
62 const char *parse = switch_xml_attr_soft(x_api, "parse");
63 const char *destination = switch_xml_attr_soft(x_api, "destination");
64 const char *arguments = switch_xml_attr_soft(x_api, "argument");
65
66 int proceed;
67 switch_regex_t *re = NULL;
68 int ovector[30];
69
70 if ((proceed = switch_regex_perform(cmd, parse, &re, ovector, sizeof(ovector) / sizeof(ovector[0])))) {
71 const char *api_args = NULL;
72 char *substituted = NULL;
73
74 if (cmd && strchr(parse, '(')) {
75 uint32_t len = (uint32_t) (strlen(cmd) + strlen(arguments) + 10) * proceed;
76 if (!(substituted = malloc(len))) {
77 switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "Memory Error!\n");
78 goto end;
79 }
80 memset(substituted, 0, len);
81 switch_perform_substitution(re, proceed, arguments, cmd , substituted, len, ovector);
82 api_args = substituted;
83 } else {
84 api_args = arguments;
85 }
86 switch_api_execute(destination, api_args, session, stream);
87
88 switch_safe_free(substituted);
89 } else {
90 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No match for API %s (%s != %s)\n", api_name, parse, cmd);
91 }
92 switch_regex_safe_free(re);
93
94 } else {
95 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "API %s doesn't exist inside the xml structure. You might have forgot to reload the module after editing it\n", api_name);
96 }
97
98 end:
99 if (xml)
100 switch_xml_free(xml);
101
102
103 return SWITCH_STATUS_SUCCESS;
104 }
105
106 /* Macro expands to: switch_status_t mod_abstraction_load(switch_loadable_module_interface_t **module_interface, switch_memory_pool_t *pool) */
SWITCH_MODULE_LOAD_FUNCTION(mod_abstraction_load)107 SWITCH_MODULE_LOAD_FUNCTION(mod_abstraction_load)
108 {
109 switch_status_t status = SWITCH_STATUS_TERM;
110 switch_api_interface_t *api_interface;
111 switch_xml_t cfg, xml, x_apis, x_api;
112 int count = 0;
113
114 /* connect my internal structure to the blank pointer passed to me */
115 *module_interface = switch_loadable_module_create_module_interface(pool, modname);
116
117 if (!(xml = switch_xml_open_cfg(global_cf, &cfg, NULL))) {
118 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Open of %s failed\n", global_cf);
119 goto end;
120 }
121
122 if (!(x_apis = switch_xml_child(cfg, "apis"))) {
123 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No apis group\n");
124 goto end;
125 }
126
127 for (x_api = switch_xml_child(x_apis, "api"); x_api; x_api = x_api->next) {
128 const char *name = switch_xml_attr_soft(x_api, "name");
129 const char *description = switch_xml_attr_soft(x_api, "description");
130 const char *syntax = switch_xml_attr_soft(x_api, "syntax");
131 SWITCH_ADD_API(api_interface, name, description, api_abstraction_function, syntax);
132 count++;
133
134 }
135 if (count > 0) {
136 status = SWITCH_STATUS_SUCCESS;
137 } else {
138 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No API abstraction defined\n");
139 }
140 end:
141 if (xml)
142 switch_xml_free(xml);
143
144 return status;
145 }
146
147 /*
148 Called when the system shuts down
149 Macro expands to: switch_status_t mod_abstraction_shutdown() */
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_abstraction_shutdown)150 SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_abstraction_shutdown)
151 {
152 /* Cleanup dynamically allocated config settings */
153 return SWITCH_STATUS_SUCCESS;
154 }
155
156 /* For Emacs:
157 * Local Variables:
158 * mode:c
159 * indent-tabs-mode:t
160 * tab-width:4
161 * c-basic-offset:4
162 * End:
163 * For VIM:
164 * vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet
165 */
166