#include "asterisk.h"
#include <dahdi/user.h>
#include "asterisk/lock.h"
#include "asterisk/file.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/config.h"
#include "asterisk/app.h"
#include "asterisk/cli.h"
#include "asterisk/say.h"
#include "asterisk/utils.h"
Go to the source code of this file.
Defines | |
#define | CONF_SIZE 160 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static int | careful_write (int fd, unsigned char *data, int len) |
static int | conf_exec (struct ast_channel *chan, const char *data) |
static int | conf_run (struct ast_channel *chan, int confno, int confflags) |
static int | load_module (void) |
static int | unload_module (void) |
Variables | |
static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Barge in on DAHDI channel application" , .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 = "88eaa8f5c1bd988bedd71113385e0886" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } |
static const char | app [] = "DAHDIBarge" |
static struct ast_module_info * | ast_module_info = &__mod_info |
Definition in file app_dahdibarge.c.
#define CONF_SIZE 160 |
static void __reg_module | ( | void | ) | [static] |
Definition at line 310 of file app_dahdibarge.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 310 of file app_dahdibarge.c.
static int careful_write | ( | int | fd, | |
unsigned char * | data, | |||
int | len | |||
) | [static] |
Definition at line 79 of file app_dahdibarge.c.
References ast_log(), errno, and LOG_WARNING.
Referenced by conf_play(), and conf_run().
00080 { 00081 int res; 00082 while(len) { 00083 res = write(fd, data, len); 00084 if (res < 1) { 00085 if (errno != EAGAIN) { 00086 ast_log(LOG_WARNING, "Failed to write audio data to conference: %s\n", strerror(errno)); 00087 return -1; 00088 } else 00089 return 0; 00090 } 00091 len -= res; 00092 data += res; 00093 } 00094 return 0; 00095 }
static int conf_exec | ( | struct ast_channel * | chan, | |
const char * | data | |||
) | [static] |
Definition at line 263 of file app_dahdibarge.c.
References ast_channel::_state, ast_answer(), ast_app_getdata(), ast_log(), AST_STATE_UP, ast_strlen_zero(), conf_run(), and LOG_WARNING.
Referenced by load_module().
00264 { 00265 int res = -1; 00266 int retrycnt = 0; 00267 int confflags = 0; 00268 int confno = 0; 00269 char confnostr[80] = ""; 00270 00271 if (!ast_strlen_zero(data)) { 00272 if ((sscanf(data, "DAHDI/%30d", &confno) != 1) && 00273 (sscanf(data, "%30d", &confno) != 1)) { 00274 ast_log(LOG_WARNING, "DAHDIBarge Argument (if specified) must be a channel number, not '%s'\n", (char *)data); 00275 return 0; 00276 } 00277 } 00278 00279 if (chan->_state != AST_STATE_UP) 00280 ast_answer(chan); 00281 00282 while(!confno && (++retrycnt < 4)) { 00283 /* Prompt user for conference number */ 00284 confnostr[0] = '\0'; 00285 res = ast_app_getdata(chan, "conf-getchannel",confnostr, sizeof(confnostr) - 1, 0); 00286 if (res <0) goto out; 00287 if (sscanf(confnostr, "%30d", &confno) != 1) 00288 confno = 0; 00289 } 00290 if (confno) { 00291 /* XXX Should prompt user for pin if pin is required XXX */ 00292 /* Run the conference */ 00293 res = conf_run(chan, confno, confflags); 00294 } 00295 out: 00296 /* Do the conference */ 00297 return res; 00298 }
static int conf_run | ( | struct ast_channel * | chan, | |
int | confno, | |||
int | confflags | |||
) | [static] |
Definition at line 97 of file app_dahdibarge.c.
References ast_debug, AST_FORMAT_ULAW, AST_FRAME_DTMF, AST_FRAME_VOICE, ast_frfree, AST_FRIENDLY_OFFSET, ast_getformatname(), ast_indicate(), ast_log(), ast_read(), ast_set_read_format(), ast_set_write_format(), ast_waitfor_nandfds(), ast_write(), careful_write(), CONF_SIZE, errno, f, ast_channel::fds, ast_frame::flags, LOG_WARNING, ast_channel::name, ast_channel::tech, and ast_channel_tech::type.
Referenced by conf_exec(), run_station(), sla_station_exec(), and sla_trunk_exec().
00098 { 00099 int fd; 00100 struct dahdi_confinfo dahdic; 00101 struct ast_frame *f; 00102 struct ast_channel *c; 00103 struct ast_frame fr; 00104 int outfd; 00105 int ms; 00106 int nfds; 00107 int res; 00108 int flags; 00109 int retrydahdi; 00110 int origfd; 00111 int ret = -1; 00112 00113 struct dahdi_bufferinfo bi; 00114 char __buf[CONF_SIZE + AST_FRIENDLY_OFFSET]; 00115 char *buf = __buf + AST_FRIENDLY_OFFSET; 00116 00117 /* Set it into U-law mode (write) */ 00118 if (ast_set_write_format(chan, AST_FORMAT_ULAW) < 0) { 00119 ast_log(LOG_WARNING, "Unable to set '%s' to write ulaw mode\n", chan->name); 00120 goto outrun; 00121 } 00122 00123 /* Set it into U-law mode (read) */ 00124 if (ast_set_read_format(chan, AST_FORMAT_ULAW) < 0) { 00125 ast_log(LOG_WARNING, "Unable to set '%s' to read ulaw mode\n", chan->name); 00126 goto outrun; 00127 } 00128 ast_indicate(chan, -1); 00129 retrydahdi = strcasecmp(chan->tech->type, "DAHDI"); 00130 dahdiretry: 00131 origfd = chan->fds[0]; 00132 if (retrydahdi) { 00133 fd = open("/dev/dahdi/pseudo", O_RDWR); 00134 if (fd < 0) { 00135 ast_log(LOG_WARNING, "Unable to open pseudo channel: %s\n", strerror(errno)); 00136 goto outrun; 00137 } 00138 /* Make non-blocking */ 00139 flags = fcntl(fd, F_GETFL); 00140 if (flags < 0) { 00141 ast_log(LOG_WARNING, "Unable to get flags: %s\n", strerror(errno)); 00142 close(fd); 00143 goto outrun; 00144 } 00145 if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) { 00146 ast_log(LOG_WARNING, "Unable to set flags: %s\n", strerror(errno)); 00147 close(fd); 00148 goto outrun; 00149 } 00150 /* Setup buffering information */ 00151 memset(&bi, 0, sizeof(bi)); 00152 bi.bufsize = CONF_SIZE; 00153 bi.txbufpolicy = DAHDI_POLICY_IMMEDIATE; 00154 bi.rxbufpolicy = DAHDI_POLICY_IMMEDIATE; 00155 bi.numbufs = 4; 00156 if (ioctl(fd, DAHDI_SET_BUFINFO, &bi)) { 00157 ast_log(LOG_WARNING, "Unable to set buffering information: %s\n", strerror(errno)); 00158 close(fd); 00159 goto outrun; 00160 } 00161 nfds = 1; 00162 } else { 00163 /* XXX Make sure we're not running on a pseudo channel XXX */ 00164 fd = chan->fds[0]; 00165 nfds = 0; 00166 } 00167 memset(&dahdic, 0, sizeof(dahdic)); 00168 /* Check to see if we're in a conference... */ 00169 dahdic.chan = 0; 00170 if (ioctl(fd, DAHDI_GETCONF, &dahdic)) { 00171 ast_log(LOG_WARNING, "Error getting conference\n"); 00172 close(fd); 00173 goto outrun; 00174 } 00175 if (dahdic.confmode) { 00176 /* Whoa, already in a conference... Retry... */ 00177 if (!retrydahdi) { 00178 ast_debug(1, "DAHDI channel is in a conference already, retrying with pseudo\n"); 00179 retrydahdi = 1; 00180 goto dahdiretry; 00181 } 00182 } 00183 memset(&dahdic, 0, sizeof(dahdic)); 00184 /* Add us to the conference */ 00185 dahdic.chan = 0; 00186 dahdic.confno = confno; 00187 dahdic.confmode = DAHDI_CONF_MONITORBOTH; 00188 00189 if (ioctl(fd, DAHDI_SETCONF, &dahdic)) { 00190 ast_log(LOG_WARNING, "Error setting conference\n"); 00191 close(fd); 00192 goto outrun; 00193 } 00194 ast_debug(1, "Placed channel %s in DAHDI channel %d monitor\n", chan->name, confno); 00195 00196 for(;;) { 00197 outfd = -1; 00198 ms = -1; 00199 c = ast_waitfor_nandfds(&chan, 1, &fd, nfds, NULL, &outfd, &ms); 00200 if (c) { 00201 if (c->fds[0] != origfd) { 00202 if (retrydahdi) { 00203 /* Kill old pseudo */ 00204 close(fd); 00205 } 00206 ast_debug(1, "Ooh, something swapped out under us, starting over\n"); 00207 retrydahdi = 0; 00208 goto dahdiretry; 00209 } 00210 f = ast_read(c); 00211 if (!f) 00212 break; 00213 if ((f->frametype == AST_FRAME_DTMF) && (f->subclass.integer == '#')) { 00214 ret = 0; 00215 ast_frfree(f); 00216 break; 00217 } else if (fd != chan->fds[0]) { 00218 if (f->frametype == AST_FRAME_VOICE) { 00219 if (f->subclass.codec == AST_FORMAT_ULAW) { 00220 /* Carefully write */ 00221 careful_write(fd, f->data.ptr, f->datalen); 00222 } else 00223 ast_log(LOG_WARNING, "Huh? Got a non-ulaw (%s) frame in the conference\n", ast_getformatname(f->subclass.codec)); 00224 } 00225 } 00226 ast_frfree(f); 00227 } else if (outfd > -1) { 00228 res = read(outfd, buf, CONF_SIZE); 00229 if (res > 0) { 00230 memset(&fr, 0, sizeof(fr)); 00231 fr.frametype = AST_FRAME_VOICE; 00232 fr.subclass.codec = AST_FORMAT_ULAW; 00233 fr.datalen = res; 00234 fr.samples = res; 00235 fr.data.ptr = buf; 00236 fr.offset = AST_FRIENDLY_OFFSET; 00237 if (ast_write(chan, &fr) < 0) { 00238 ast_log(LOG_WARNING, "Unable to write frame to channel: %s\n", strerror(errno)); 00239 /* break; */ 00240 } 00241 } else 00242 ast_log(LOG_WARNING, "Failed to read frame: %s\n", strerror(errno)); 00243 } 00244 } 00245 if (fd != chan->fds[0]) 00246 close(fd); 00247 else { 00248 /* Take out of conference */ 00249 /* Add us to the conference */ 00250 dahdic.chan = 0; 00251 dahdic.confno = 0; 00252 dahdic.confmode = 0; 00253 if (ioctl(fd, DAHDI_SETCONF, &dahdic)) { 00254 ast_log(LOG_WARNING, "Error setting conference\n"); 00255 } 00256 } 00257 00258 outrun: 00259 00260 return ret; 00261 }
static int load_module | ( | void | ) | [static] |
Definition at line 305 of file app_dahdibarge.c.
References AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, ast_register_application_xml, and conf_exec().
00306 { 00307 return ((ast_register_application_xml(app, conf_exec)) ? AST_MODULE_LOAD_FAILURE : AST_MODULE_LOAD_SUCCESS); 00308 }
static int unload_module | ( | void | ) | [static] |
Definition at line 300 of file app_dahdibarge.c.
References ast_unregister_application().
00301 { 00302 return ast_unregister_application(app); 00303 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Barge in on DAHDI channel application" , .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 = "88eaa8f5c1bd988bedd71113385e0886" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static] |
Definition at line 310 of file app_dahdibarge.c.
const char app[] = "DAHDIBarge" [static] |
Definition at line 75 of file app_dahdibarge.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 310 of file app_dahdibarge.c.