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asterisk/res/res_osp.c

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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Provide Open Settlement Protocol capability
*
* Copyright (C) 2004, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*/
#include <sys/types.h>
#include <asterisk/file.h>
#include <asterisk/channel.h>
#include <asterisk/logger.h>
#include <asterisk/say.h>
#include <asterisk/module.h>
#include <asterisk/options.h>
#include <asterisk/crypto.h>
#include <asterisk/md5.h>
#include <asterisk/cli.h>
#include <asterisk/io.h>
#include <asterisk/lock.h>
#include <asterisk/astosp.h>
#include <asterisk/config.h>
#include <asterisk/utils.h>
#include <asterisk/lock.h>
#include <asterisk/causes.h>
#include <asterisk/callerid.h>
#include <osp.h>
#include <openssl/err.h>
#include <stdio.h>
#include <dirent.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include "../asterisk.h"
#include "../astconf.h"
#include <openssl/bio.h>
#include <openssl/pem.h>
#include <openssl/evp.h>
#define MAX_CERTS 10
#define MAX_SERVICEPOINTS 10
#define OSP_MAX 256
#define OSP_DEFAULT_MAX_CONNECTIONS 20
#define OSP_DEFAULT_RETRY_DELAY 0
#define OSP_DEFAULT_RETRY_LIMIT 2
#define OSP_DEFAULT_TIMEOUT 500
static int loadPemCert(unsigned char *FileName, unsigned char *buffer, int *len);
static int loadPemPrivateKey(unsigned char *FileName, unsigned char *buffer, int *len);
AST_MUTEX_DEFINE_STATIC(osplock);
static int initialized = 0;
static int hardware = 0;
struct osp_provider {
char name[OSP_MAX];
char localpvtkey[OSP_MAX];
char localcert[OSP_MAX];
char cacerts[MAX_CERTS][OSP_MAX];
int cacount;
char servicepoints[MAX_SERVICEPOINTS][OSP_MAX];
char source[OSP_MAX];
int spcount;
int dead;
int maxconnections;
int retrydelay;
int retrylimit;
int timeout;
OSPTPROVHANDLE handle;
struct osp_provider *next;
};
static struct osp_provider *providers;
static int osp_build(struct ast_config *cfg, char *cat)
{
OSPTCERT TheAuthCert[MAX_CERTS];
unsigned char Reqbuf[4096],LocalBuf[4096],AuthBuf[MAX_CERTS][4096];
struct ast_variable *v;
struct osp_provider *osp;
int x,length,errorcode=0;
int mallocd=0,i;
char *cacerts[MAX_CERTS];
const char *servicepoints[MAX_SERVICEPOINTS];
OSPTPRIVATEKEY privatekey;
OSPTCERT localcert;
OSPTCERT *authCerts[MAX_CERTS];
ast_mutex_lock(&osplock);
osp = providers;
while(osp) {
if (!strcasecmp(osp->name, cat))
break;
osp = osp->next;
}
ast_mutex_unlock(&osplock);
if (!osp) {
mallocd = 1;
osp = malloc(sizeof(struct osp_provider));
if (!osp) {
ast_log(LOG_WARNING, "Out of memory!\n");
return -1;
}
memset(osp, 0, sizeof(struct osp_provider));
osp->handle = -1;
}
strncpy(osp->name, cat, sizeof(osp->name) - 1);
snprintf(osp->localpvtkey, sizeof(osp->localpvtkey), AST_KEY_DIR "/%s-privatekey.pem", cat);
snprintf(osp->localcert, sizeof(osp->localpvtkey), AST_KEY_DIR "/%s-localcert.pem", cat);
osp->maxconnections=OSP_DEFAULT_MAX_CONNECTIONS;
osp->retrydelay = OSP_DEFAULT_RETRY_DELAY;
osp->retrylimit = OSP_DEFAULT_RETRY_LIMIT;
osp->timeout = OSP_DEFAULT_TIMEOUT;
osp->source[0] = '\0';
ast_log(LOG_DEBUG, "Building OSP Provider '%s'\n", cat);
v = ast_variable_browse(cfg, cat);
while(v) {
if (!strcasecmp(v->name, "privatekey")) {
if (v->value[0] == '/')
strncpy(osp->localpvtkey, v->value, sizeof(osp->localpvtkey) - 1);
else
snprintf(osp->localpvtkey, sizeof(osp->localpvtkey), AST_KEY_DIR "/%s", v->value);
} else if (!strcasecmp(v->name, "localcert")) {
if (v->value[0] == '/')
strncpy(osp->localcert, v->value, sizeof(osp->localcert) - 1);
else
snprintf(osp->localcert, sizeof(osp->localcert), AST_KEY_DIR "/%s", v->value);
} else if (!strcasecmp(v->name, "cacert")) {
if (osp->cacount < MAX_CERTS) {
if (v->value[0] == '/')
strncpy(osp->cacerts[osp->cacount], v->value, sizeof(osp->cacerts[0]) - 1);
else
snprintf(osp->cacerts[osp->cacount], sizeof(osp->cacerts[0]), AST_KEY_DIR "/%s", v->value);
osp->cacount++;
} else
ast_log(LOG_WARNING, "Too many CA Certificates at line %d\n", v->lineno);
} else if (!strcasecmp(v->name, "servicepoint")) {
if (osp->spcount < MAX_SERVICEPOINTS) {
strncpy(osp->servicepoints[osp->spcount], v->value, sizeof(osp->servicepoints[0]) - 1);
osp->spcount++;
} else
ast_log(LOG_WARNING, "Too many Service points at line %d\n", v->lineno);
} else if (!strcasecmp(v->name, "maxconnections")) {
if ((sscanf(v->value, "%i", &x) == 1) && (x > 0) && (x <= 1000)) {
osp->maxconnections = x;
} else
ast_log(LOG_WARNING, "maxconnections should be an integer from 1 to 1000, not '%s' at line %d\n", v->value, v->lineno);
} else if (!strcasecmp(v->name, "retrydelay")) {
if ((sscanf(v->value, "%i", &x) == 1) && (x >= 0) && (x <= 10)) {
osp->retrydelay = x;
} else
ast_log(LOG_WARNING, "retrydelay should be an integer from 0 to 10, not '%s' at line %d\n", v->value, v->lineno);
} else if (!strcasecmp(v->name, "retrylimit")) {
if ((sscanf(v->value, "%i", &x) == 1) && (x >= 0) && (x <= 100)) {
osp->retrylimit = x;
} else
ast_log(LOG_WARNING, "retrylimit should be an integer from 0 to 100, not '%s' at line %d\n", v->value, v->lineno);
} else if (!strcasecmp(v->name, "timeout")) {
if ((sscanf(v->value, "%i", &x) == 1) && (x >= 200) && (x <= 10000)) {
osp->timeout = x;
} else
ast_log(LOG_WARNING, "timeout should be an integer from 200 to 10000, not '%s' at line %d\n", v->value, v->lineno);
}
v = v->next;
}
if (osp->cacount < 1) {
snprintf(osp->cacerts[osp->cacount], sizeof(osp->cacerts[0]), AST_KEY_DIR "/%s-cacert.pem", cat);
osp->cacount++;
}
for (x=0;x<osp->cacount;x++)
cacerts[x] = osp->cacerts[x];
for (x=0;x<osp->spcount;x++)
servicepoints[x] = osp->servicepoints[x];
ast_mutex_lock(&osplock);
osp->dead = 0;
if (osp->handle > -1) {
ast_log(LOG_DEBUG, "Deleting old handle for '%s'\n", osp->name);
OSPPProviderDelete(osp->handle, 0);
}
length = 0;
ast_log(LOG_DEBUG, "Loading private key for '%s' (%s)\n", osp->name, osp->localpvtkey);
errorcode = loadPemPrivateKey(osp->localpvtkey,Reqbuf,&length);
if (errorcode == 0)
{
privatekey.PrivateKeyData = Reqbuf;
privatekey.PrivateKeyLength = length;
}
else
{
return -1;
}
length = 0;
ast_log(LOG_DEBUG, "Loading local cert for '%s' (%s)\n", osp->name, osp->localcert);
errorcode = loadPemCert(osp->localcert,LocalBuf,&length);
if (errorcode == 0)
{
localcert.CertData = LocalBuf;
localcert.CertDataLength = length;
}
else
{
return -1;
}
for (i=0;i<osp->cacount;i++)
{
length = 0;
ast_log(LOG_DEBUG, "Loading CA cert %d for '%s' (%s)\n", i + 1, osp->name, osp->cacerts[i]);
errorcode = loadPemCert(osp->cacerts[i],AuthBuf[i],&length);
if (errorcode == 0)
{
TheAuthCert[i].CertData = AuthBuf[i];
TheAuthCert[i].CertDataLength = length;
authCerts[i] = &(TheAuthCert[i]);
}
else
{
return -1;
}
}
ast_log(LOG_DEBUG, "Creating provider handle for '%s'\n", osp->name);
ast_log(LOG_DEBUG, "Service point '%s %d'\n", servicepoints[0], osp->spcount);
if (OSPPProviderNew(osp->spcount,
servicepoints,
NULL,
"localhost",
&privatekey,
&localcert,
osp->cacount,
(const OSPTCERT **)authCerts,
1,
300,
osp->maxconnections,
60000,
osp->retrydelay,
osp->retrylimit,
osp->timeout,
"",
"",
&osp->handle)) {
ast_log(LOG_WARNING, "Unable to initialize provider '%s'\n", cat);
osp->dead = 1;
}
if (mallocd) {
osp->next = providers;
providers = osp;
}
ast_mutex_unlock(&osplock);
return 0;
}
static int show_osp(int fd, int argc, char *argv[])
{
struct osp_provider *osp;
char *search = NULL;
int x;
int found = 0;
if ((argc < 2) || (argc > 3))
return RESULT_SHOWUSAGE;
if (argc > 2)
search = argv[2];
if (!search)
ast_cli(fd, "OSP: %s %s\n", initialized ? "Initialized" : "Uninitialized", hardware ? "Accelerated" : "Normal");
ast_mutex_lock(&osplock);
osp = providers;
while(osp) {
if (!search || !strcasecmp(osp->name, search)) {
if (found)
ast_cli(fd, "\n");
ast_cli(fd, " == OSP Provider '%s' ==\n", osp->name);
ast_cli(fd, "Local Private Key: %s\n", osp->localpvtkey);
ast_cli(fd, "Local Certificate: %s\n", osp->localcert);
for (x=0;x<osp->cacount;x++)
ast_cli(fd, "CA Certificate %d: %s\n", x + 1, osp->cacerts[x]);
for (x=0;x<osp->spcount;x++)
ast_cli(fd, "Service Point %d: %s\n", x + 1, osp->servicepoints[x]);
ast_cli(fd, "Max Connections: %d\n", osp->maxconnections);
ast_cli(fd, "Retry Delay: %d seconds\n", osp->retrydelay);
ast_cli(fd, "Retry Limit: %d\n", osp->retrylimit);
ast_cli(fd, "Timeout: %d milliseconds\n", osp->timeout);
ast_cli(fd, "Source: %s\n", strlen(osp->source) ? osp->source : "<unspecified>");
ast_cli(fd, "OSP Handle: %d\n", osp->handle);
found++;
}
osp = osp->next;
}
ast_mutex_unlock(&osplock);
if (!found) {
if (search)
ast_cli(fd, "Unable to find OSP provider '%s'\n", search);
else
ast_cli(fd, "No OSP providers configured\n");
}
return RESULT_SUCCESS;
}
/*----------------------------------------------*
* Loads the Certificate *
*----------------------------------------------*/
static int loadPemCert(unsigned char *FileName, unsigned char *buffer, int *len)
{
int length = 0;
unsigned char *temp;
BIO *bioIn = NULL;
X509 *cert=NULL;
int retVal = OSPC_ERR_NO_ERROR;
temp = buffer;
bioIn = BIO_new_file((const char*)FileName,"r");
if (bioIn == NULL)
{
ast_log(LOG_WARNING,"Failed to find the File - %s \n",FileName);
return -1;
}
else
{
cert = PEM_read_bio_X509(bioIn,NULL,NULL,NULL);
if (cert == NULL)
{
ast_log(LOG_WARNING,"Failed to parse the Certificate from the File - %s \n",FileName);
return -1;
}
else
{
length = i2d_X509(cert,&temp);
if (cert == 0)
{
ast_log(LOG_WARNING,"Failed to parse the Certificate from the File - %s, Length=0 \n",FileName);
return -1;
}
else
{
*len = length;
}
}
}
if (bioIn != NULL)
{
BIO_free(bioIn);
}
if (cert != NULL)
{
X509_free(cert);
}
return retVal;
}
/*----------------------------------------------*
* Loads the Private Key *
*----------------------------------------------*/
static int loadPemPrivateKey(unsigned char *FileName, unsigned char *buffer, int *len)
{
int length = 0;
unsigned char *temp;
BIO *bioIn = NULL;
RSA *pKey = NULL;
int retVal = OSPC_ERR_NO_ERROR;
temp = buffer;
bioIn = BIO_new_file((const char*)FileName,"r");
if (bioIn == NULL)
{
ast_log(LOG_WARNING,"Failed to find the File - %s \n",FileName);
return -1;
}
else
{
pKey = PEM_read_bio_RSAPrivateKey(bioIn,NULL,NULL,NULL);
if (pKey == NULL)
{
ast_log(LOG_WARNING,"Failed to parse the Private Key from the File - %s \n",FileName);
return -1;
}
else
{
length = i2d_RSAPrivateKey(pKey,&temp);
if (length == 0)
{
ast_log(LOG_WARNING,"Failed to parse the Private Key from the File - %s, Length=0 \n",FileName);
return -1;
}
else
{
*len = length;
}
}
}
if (bioIn != NULL)
{
BIO_free(bioIn);
}
if (pKey != NULL)
{
RSA_free(pKey);
}
return retVal;
}
int ast_osp_validate(char *provider, char *token, int *handle, unsigned int *timelimit, char *callerid, struct in_addr addr, char *extension)
{
char tmp[256]="", *l, *n;
char iabuf[INET_ADDRSTRLEN];
char source[OSP_MAX] = ""; /* Same length as osp->source */
char *token2;
int tokenlen;
struct osp_provider *osp;
int res = 0;
unsigned int authorised, dummy;
if (!provider || !strlen(provider))
provider = "default";
token2 = ast_strdupa(token);
if (!token2)
return -1;
tokenlen = ast_base64decode(token2, token, strlen(token));
*handle = -1;
if (!callerid)
callerid = "";
strncpy(tmp, callerid, sizeof(tmp) - 1);
ast_callerid_parse(tmp, &n, &l);
if (!l)
l = "";
else {
ast_shrink_phone_number(l);
if (!ast_isphonenumber(l))
l = "";
}
callerid = l;
ast_mutex_lock(&osplock);
ast_inet_ntoa(iabuf, sizeof(iabuf), addr);
osp = providers;
while(osp) {
if (!strcasecmp(osp->name, provider)) {
if (OSPPTransactionNew(osp->handle, handle)) {
ast_log(LOG_WARNING, "Unable to create OSP Transaction handle!\n");
} else {
strncpy(source, osp->source, sizeof(source) - 1);
res = 1;
}
break;
}
osp = osp->next;
}
ast_mutex_unlock(&osplock);
if (res) {
res = 0;
dummy = 0;
if (!OSPPTransactionValidateAuthorisation(*handle, iabuf, source, NULL, NULL,
callerid, OSPC_E164, extension, OSPC_E164, 0, "", tokenlen, token2, &authorised, timelimit, &dummy, NULL, TOKEN_ALGO_BOTH)) {
if (authorised) {
ast_log(LOG_DEBUG, "Validated token for '%s' from '%s@%s'\n", extension, callerid, iabuf);
res = 1;
}
}
}
return res;
}
int ast_osp_lookup(struct ast_channel *chan, char *provider, char *extension, char *callerid, struct ast_osp_result *result)
{
int cres;
int res = 0;
int counts;
int tokenlen;
unsigned int dummy=0;
unsigned int timelimit;
unsigned int callidlen;
struct osp_provider *osp;
char source[OSP_MAX] = ""; /* Same length as osp->source */
char uniqueid[32] = "";
char callednum[2048]="";
char destination[2048]="";
char token[2000];
char tmp[256]="", *l, *n;
OSPTCALLID *callid;
OSPE_DEST_PROT prot;
result->handle = -1;
result->numresults = 0;
result->tech[0] = '\0';
result->dest[0] = '\0';
result->token[0] = '\0';
if (!provider || !strlen(provider))
provider = "default";
if (!callerid)
callerid = "";
strncpy(tmp, callerid, sizeof(tmp) - 1);
ast_callerid_parse(tmp, &n, &l);
if (!l)
l = "";
else {
ast_shrink_phone_number(l);
if (!ast_isphonenumber(l))
l = "";
}
callerid = l;
if (chan) {
strncpy(uniqueid, chan->uniqueid, sizeof(uniqueid) - 1);
cres = ast_autoservice_start(chan);
if (cres < 0)
return cres;
}
ast_mutex_lock(&osplock);
osp = providers;
while(osp) {
if (!strcasecmp(osp->name, provider)) {
if (OSPPTransactionNew(osp->handle, &result->handle)) {
ast_log(LOG_WARNING, "Unable to create OSP Transaction handle!\n");
} else {
strncpy(source, osp->source, sizeof(source) - 1);
res = 1;
}
break;
}
osp = osp->next;
}
ast_mutex_unlock(&osplock);
if (res) {
res = 0;
callid = OSPPCallIdNew(strlen(uniqueid), uniqueid);
if (callid) {
/* No more than 10 back */
counts = 10;
dummy = 0;
callidlen = sizeof(uniqueid);
if (!OSPPTransactionRequestAuthorisation(result->handle, source, "",
callerid,OSPC_E164, extension, OSPC_E164, NULL, 1, &callid, NULL, &counts, &dummy, NULL)) {
if (counts) {
tokenlen = sizeof(token);
result->numresults = counts - 1;
if (!OSPPTransactionGetFirstDestination(result->handle, 0, NULL, NULL, &timelimit, &callidlen, uniqueid,
sizeof(callednum), callednum, sizeof(destination), destination, 0, NULL, &tokenlen, token)) {
ast_log(LOG_DEBUG, "Got destination '%s' and '%s' for '%s' (provider '%s')\n",
destination, callednum, extension, provider);
do {
ast_base64encode(result->token, token, tokenlen, sizeof(result->token) - 1);
if ((strlen(destination) > 2) && !OSPPTransactionGetDestProtocol(result->handle, &prot)) {
res = 1;
/* Strip leading and trailing brackets */
destination[strlen(destination) - 1] = '\0';
switch(prot) {
case OSPE_DEST_PROT_H323_SETUP:
strncpy(result->tech, "H323", sizeof(result->tech) - 1);
snprintf(result->dest, sizeof(result->dest), "%s@%s", callednum, destination + 1);
break;
case OSPE_DEST_PROT_SIP:
strncpy(result->tech, "SIP", sizeof(result->tech) - 1);
snprintf(result->dest, sizeof(result->dest), "%s@%s", callednum, destination + 1);
break;
default:
ast_log(LOG_DEBUG, "Unknown destination protocol '%d', skipping...\n", prot);
res = 0;
}
if (!res && result->numresults) {
result->numresults--;
if (OSPPTransactionGetNextDestination(result->handle, OSPC_FAIL_INCOMPATIBLE_DEST, 0, NULL, NULL, &timelimit, &callidlen, uniqueid,
sizeof(callednum), callednum, sizeof(destination), destination, 0, NULL, &tokenlen, token)) {
break;
}
}
} else {
ast_log(LOG_DEBUG, "Missing destination protocol\n");
break;
}
} while(!res && result->numresults);
}
}
}
OSPPCallIdDelete(&callid);
}
if (!res) {
OSPPTransactionDelete(result->handle);
result->handle = -1;
}
}
if (!osp)
ast_log(LOG_NOTICE, "OSP Provider '%s' does not exist!\n", provider);
if (chan) {
cres = ast_autoservice_stop(chan);
if (cres < 0)
return cres;
}
return res;
}
int ast_osp_next(struct ast_osp_result *result, int cause)
{
int res = 0;
int tokenlen;
unsigned int dummy=0;
unsigned int timelimit;
unsigned int callidlen;
char uniqueid[32] = "";
char callednum[2048]="";
char destination[2048]="";
char token[2000];
OSPE_DEST_PROT prot;
result->tech[0] = '\0';
result->dest[0] = '\0';
result->token[0] = '\0';
if (result->handle > -1) {
dummy = 0;
callidlen = sizeof(uniqueid);
if (result->numresults) {
tokenlen = sizeof(token);
while(!res && result->numresults) {
result->numresults--;
if (!OSPPTransactionGetNextDestination(result->handle, OSPC_FAIL_INCOMPATIBLE_DEST, 0, NULL, NULL, &timelimit, &callidlen, uniqueid,
sizeof(callednum), callednum, sizeof(destination), destination, 0, NULL, &tokenlen, token)) {
ast_base64encode(result->token, token, tokenlen, sizeof(result->token) - 1);
if ((strlen(destination) > 2) && !OSPPTransactionGetDestProtocol(result->handle, &prot)) {
res = 1;
/* Strip leading and trailing brackets */
destination[strlen(destination) - 1] = '\0';
switch(prot) {
case OSPE_DEST_PROT_H323_SETUP:
strncpy(result->tech, "H323", sizeof(result->tech) - 1);
snprintf(result->dest, sizeof(result->dest), "%s@%s", callednum, destination + 1);
break;
case OSPE_DEST_PROT_SIP:
strncpy(result->tech, "SIP", sizeof(result->tech) - 1);
snprintf(result->dest, sizeof(result->dest), "%s@%s", callednum, destination + 1);
break;
default:
ast_log(LOG_DEBUG, "Unknown destination protocol '%d', skipping...\n", prot);
res = 0;
}
} else {
ast_log(LOG_DEBUG, "Missing destination protocol\n");
break;
}
}
}
}
if (!res) {
OSPPTransactionDelete(result->handle);
result->handle = -1;
}
}
return res;
}
static enum OSPEFAILREASON cause2reason(int cause)
{
switch(cause) {
case AST_CAUSE_BUSY:
return OSPC_FAIL_USER_BUSY;
case AST_CAUSE_CONGESTION:
return OSPC_FAIL_SWITCHING_EQUIPMENT_CONGESTION;
case AST_CAUSE_UNALLOCATED:
return OSPC_FAIL_UNALLOC_NUMBER;
case AST_CAUSE_NOTDEFINED:
return OSPC_FAIL_NORMAL_UNSPECIFIED;
case AST_CAUSE_NOANSWER:
return OSPC_FAIL_NO_ANSWER_FROM_USER;
case AST_CAUSE_NORMAL:
default:
return OSPC_FAIL_NORMAL_CALL_CLEARING;
}
}
int ast_osp_terminate(int handle, int cause, time_t start, time_t duration)
{
unsigned int dummy = 0;
int res = -1;
enum OSPEFAILREASON reason;
reason = cause2reason(cause);
if (OSPPTransactionRecordFailure(handle, reason))
ast_log(LOG_WARNING, "Failed to record call termination for handle %d\n", handle);
else if (OSPPTransactionReportUsage(handle, duration, start, 0, 0, 0, 0, &dummy, NULL))
ast_log(LOG_WARNING, "Failed to report duration for handle %d\n", handle);
else {
ast_log(LOG_DEBUG, "Completed recording handle %d\n", handle);
OSPPTransactionDelete(handle);
res = 0;
}
return res;
}
static int config_load(void)
{
struct ast_config *cfg;
char *cat;
struct osp_provider *osp, *prev = NULL, *next;
ast_mutex_lock(&osplock);
osp = providers;
while(osp) {
osp->dead = 1;
osp = osp->next;
}
ast_mutex_unlock(&osplock);
cfg = ast_load("osp.conf");
if (cfg) {
if (!initialized) {
cat = ast_variable_retrieve(cfg, "general", "accelerate");
if (cat && ast_true(cat))
if (OSPPInit(1)) {
ast_log(LOG_WARNING, "Failed to enable hardware accelleration, falling back to software mode\n");
OSPPInit(0);
} else
hardware = 1;
else
OSPPInit(0);
initialized = 1;
}
cat = ast_category_browse(cfg, NULL);
while(cat) {
if (strcasecmp(cat, "general"))
osp_build(cfg, cat);
cat = ast_category_browse(cfg, cat);
}
ast_destroy(cfg);
} else
ast_log(LOG_NOTICE, "No OSP configuration found. OSP support disabled\n");
ast_mutex_lock(&osplock);
osp = providers;
while(osp) {
next = osp->next;
if (osp->dead) {
if (prev)
prev->next = next;
else
providers = next;
/* XXX Cleanup OSP structure first XXX */
free(osp);
} else
prev = osp;
osp = next;
}
ast_mutex_unlock(&osplock);
return 0;
}
static char show_osp_usage[] =
"Usage: show osp\n"
" Displays information on Open Settlement Protocol\n";
static struct ast_cli_entry cli_show_osp =
{ { "show", "osp", NULL }, show_osp, "Displays OSP information", show_osp_usage };
int reload(void)
{
config_load();
ast_log(LOG_NOTICE, "XXX Should reload OSP config XXX\n");
return 0;
}
int load_module(void)
{
config_load();
ast_cli_register(&cli_show_osp);
return 0;
}
int unload_module(void)
{
/* Can't unload this once we're loaded */
return -1;
}
char *description(void)
{
return "Open Settlement Protocol Support";
}
int usecount(void)
{
/* We should never be unloaded */
return 1;
}
char *key()
{
return ASTERISK_GPL_KEY;
}
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