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Commit b7ab0d18 authored by Russell Bryant's avatar Russell Bryant
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store agent_pvt list using linked list macros (issue #6342) 

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@8664 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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with 69 additions and 148 deletions
channels/chan_agent.c
+ 69
− 148
View file @ b7ab0d18
......@@ -166,9 +166,6 @@ static char agentgoodbye[AST_MAX_FILENAME_LEN] = "vm-goodbye";
static int usecnt =0;
AST_MUTEX_DEFINE_STATIC(usecnt_lock);
/* Protect the interface list (of pvt's) */
AST_MUTEX_DEFINE_STATIC(agentlock);
static int recordagentcalls = 0;
static char recordformat[AST_MAX_BUF] = "";
static char recordformatext[AST_MAX_BUF] = "";
......@@ -206,10 +203,10 @@ struct agent_pvt {
char loginchan[80]; /**< channel they logged in from */
char logincallerid[80]; /**< Caller ID they had when they logged in */
struct ast_channel *chan; /**< Channel we use */
struct agent_pvt *next; /**< Next Agent in the linked list. */
AST_LIST_ENTRY(agent_pvt) list; /**< Next Agent in the linked list. */
};
static struct agent_pvt *agents = NULL; /**< Holds the list of agents (loaded form agents.conf). */
static AST_LIST_HEAD_STATIC(agents, agent_pvt); /**< Holds the list of agents (loaded form agents.conf). */
#define CHECK_FORMATS(ast, p) do { \
if (p->chan) {\
......@@ -279,34 +276,6 @@ static const struct ast_channel_tech agent_tech = {
.bridged_channel = agent_bridgedchannel,
};
/**
* Unlink (that is, take outside of the linked list) an agent.
*
* @param agent Agent to be unlinked.
*/
static void agent_unlink(struct agent_pvt *agent)
{
struct agent_pvt *p, *prev;
prev = NULL;
p = agents;
/* Iterate over all agents looking for the one. */
while(p) {
if (p == agent) {
/* Once it was found, check if it is the first one. */
if (prev)
/* If it is not, tell the previous agent that the next one is the next one of the current (jumping the current). */
prev->next = agent->next;
else
/* If it is the first one, just change the general pointer to point to the second one. */
agents = agent->next;
/* We are done. */
break;
}
prev = p;
p = p->next;
}
}
/**
* Adds an agent to the global list of agents.
*
......@@ -326,7 +295,7 @@ static struct agent_pvt *add_agent(char *agent, int pending)
char *password = NULL;
char *name = NULL;
char *agt = NULL;
struct agent_pvt *p, *prev;
struct agent_pvt *p;
if (!(parse = ast_strdupa(agent)))
return NULL;
......@@ -355,13 +324,9 @@ static struct agent_pvt *add_agent(char *agent, int pending)
}
/* Are we searching for the agent here ? To see if it exists already ? */
prev=NULL;
p = agents;
while(p) {
AST_LIST_TRAVERSE(&agents, p, list) {
if (!pending && !strcmp(p->agent, agt))
break;
prev = p;
p = p->next;
}
if (!p) {
// Build the agent.
......@@ -374,11 +339,7 @@ static struct agent_pvt *add_agent(char *agent, int pending)
p->app_sleep_cond = 1;
p->group = group;
p->pending = pending;
p->next = NULL;
if (prev)
prev->next = p;
else
agents = p;
AST_LIST_INSERT_TAIL(&agents, p, list);
}
ast_copy_string(p->password, password ? password : "", sizeof(p->password));
......@@ -824,9 +785,9 @@ static int agent_hangup(struct ast_channel *ast)
ast_device_state_changed("Agent/%s", p->agent);
if (p->pending) {
ast_mutex_lock(&agentlock);
agent_unlink(p);
ast_mutex_unlock(&agentlock);
AST_LIST_LOCK(&agents);
AST_LIST_REMOVE(&agents, p, list);
AST_LIST_UNLOCK(&agents);
}
if (p->abouttograb) {
/* Let the "about to grab" thread know this isn't valid anymore, and let it
......@@ -1033,7 +994,7 @@ static int read_agent_config(void)
{
struct ast_config *cfg;
struct ast_variable *v;
struct agent_pvt *p, *pl, *pn;
struct agent_pvt *p;
char *general_val;
group = 0;
......@@ -1045,11 +1006,9 @@ static int read_agent_config(void)
ast_log(LOG_NOTICE, "No agent configuration found -- agent support disabled\n");
return 0;
}
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
p->dead = 1;
p = p->next;
}
strcpy(moh, "default");
/* set the default recording values */
......@@ -1132,16 +1091,9 @@ static int read_agent_config(void)
}
v = v->next;
}
p = agents;
pl = NULL;
while(p) {
pn = p->next;
AST_LIST_TRAVERSE_SAFE_BEGIN(&agents, p, list) {
if (p->dead) {
/* Unlink */
if (pl)
pl->next = p->next;
else
agents = p->next;
AST_LIST_REMOVE_CURRENT(&agents, list);
/* Destroy if appropriate */
if (!p->owner) {
if (!p->chan) {
......@@ -1153,11 +1105,10 @@ static int read_agent_config(void)
ast_softhangup(p->chan, AST_SOFTHANGUP_EXPLICIT);
}
}
} else
pl = p;
p = pn;
}
}
ast_mutex_unlock(&agentlock);
AST_LIST_TRAVERSE_SAFE_END
AST_LIST_UNLOCK(&agents);
ast_config_destroy(cfg);
return 0;
}
......@@ -1171,11 +1122,9 @@ static int check_availability(struct agent_pvt *newlyavailable, int needlock)
if (option_debug)
ast_log(LOG_DEBUG, "Checking availability of '%s'\n", newlyavailable->agent);
if (needlock)
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
if (p == newlyavailable) {
p = p->next;
continue;
}
ast_mutex_lock(&p->lock);
......@@ -1190,10 +1139,9 @@ static int check_availability(struct agent_pvt *newlyavailable, int needlock)
break;
}
ast_mutex_unlock(&p->lock);
p = p->next;
}
if (needlock)
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
if (parent && chan) {
if (newlyavailable->ackcall > 1) {
/* Don't do beep here */
......@@ -1245,11 +1193,9 @@ static int check_beep(struct agent_pvt *newlyavailable, int needlock)
ast_log(LOG_DEBUG, "Checking beep availability of '%s'\n", newlyavailable->agent);
if (needlock)
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
if (p == newlyavailable) {
p = p->next;
continue;
}
ast_mutex_lock(&p->lock);
......@@ -1260,10 +1206,9 @@ static int check_beep(struct agent_pvt *newlyavailable, int needlock)
break;
}
ast_mutex_unlock(&p->lock);
p = p->next;
}
if (needlock)
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
if (p) {
ast_mutex_unlock(&newlyavailable->lock);
if (option_debug > 2)
......@@ -1293,11 +1238,9 @@ static int allow_multiple_login(char *chan,char *context)
snprintf(loginchan, sizeof(loginchan), "%s@%s", chan, !ast_strlen_zero(context) ? context : "default");
p = agents;
while(p) {
AST_LIST_TRAVERSE(&agents, p, list) {
if(!strcasecmp(chan, p->loginchan))
return 0;
p = p->next;
}
return -1;
}
......@@ -1325,9 +1268,8 @@ static struct ast_channel *agent_request(const char *type, int format, void *dat
}
/* Check actual logged in agents first */
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
ast_mutex_lock(&p->lock);
if (!p->pending && ((groupmatch && (p->group & groupmatch)) || !strcmp(data, p->agent)) &&
ast_strlen_zero(p->loginchan)) {
......@@ -1346,11 +1288,9 @@ static struct ast_channel *agent_request(const char *type, int format, void *dat
}
}
ast_mutex_unlock(&p->lock);
p = p->next;
}
if (!p) {
p = agents;
while(p) {
AST_LIST_TRAVERSE(&agents, p, list) {
ast_mutex_lock(&p->lock);
if (!p->pending && ((groupmatch && (p->group & groupmatch)) || !strcmp(data, p->agent))) {
if (p->chan || !ast_strlen_zero(p->loginchan))
......@@ -1378,7 +1318,6 @@ static struct ast_channel *agent_request(const char *type, int format, void *dat
}
}
ast_mutex_unlock(&p->lock);
p = p->next;
}
}
......@@ -1401,7 +1340,7 @@ static struct ast_channel *agent_request(const char *type, int format, void *dat
*cause = AST_CAUSE_BUSY;
else
*cause = AST_CAUSE_UNREGISTERED;
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
return chan;
}
......@@ -1436,9 +1375,8 @@ static int action_agents(struct mansession *s, struct message *m)
if (!ast_strlen_zero(id))
snprintf(idText, sizeof(idText) ,"ActionID: %s\r\n", id);
astman_send_ack(s, m, "Agents will follow");
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
ast_mutex_lock(&p->lock);
/* Status Values:
......@@ -1490,9 +1428,8 @@ static int action_agents(struct mansession *s, struct message *m)
"\r\n",
p->agent, username, status, loginChan, (int)p->loginstart, talkingtoChan, idText);
ast_mutex_unlock(&p->lock);
p = p->next;
}
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
ast_cli(s->fd, "Event: AgentsComplete\r\n"
"%s"
"\r\n",idText);
......@@ -1546,7 +1483,7 @@ static int agent_logoff(char *agent, int soft)
long logintime;
int ret = -1; /* Return -1 if no agent if found */
for (p=agents; p; p=p->next) {
AST_LIST_TRAVERSE(&agents, p, list) {
if (!strcasecmp(p->agent, agent)) {
if (!soft) {
if (p->owner) {
......@@ -1626,7 +1563,7 @@ static char *complete_agent_logoff_cmd(const char *line, const char *word, int p
int which = 0;
if (pos == 2) {
for (p=agents; p; p=p->next) {
AST_LIST_TRAVERSE(&agents, p, list) {
snprintf(name, sizeof(name), "Agent/%s", p->agent);
if (!strncasecmp(word, name, strlen(word))) {
if (++which > state) {
......@@ -1655,9 +1592,8 @@ static int agents_show(int fd, int argc, char **argv)
int offline_agents = 0; /* Number of offline agents */
if (argc != 2)
return RESULT_SHOWUSAGE;
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
ast_mutex_lock(&p->lock);
if (p->pending) {
if (p->group)
......@@ -1695,9 +1631,8 @@ static int agents_show(int fd, int argc, char **argv)
count_agents++;
}
ast_mutex_unlock(&p->lock);
p = p->next;
}
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
if ( !count_agents ) {
ast_cli(fd, "No Agents are configured in %s\n",config);
} else {
......@@ -1822,14 +1757,12 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
while (!res && (max_login_tries==0 || tries < max_login_tries)) {
tries++;
/* Check for password */
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
if (!strcmp(p->agent, user) && !p->pending)
ast_copy_string(xpass, p->password, sizeof(xpass));
p = p->next;
}
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
if (!res) {
if (!ast_strlen_zero(xpass))
res = ast_app_getdata(chan, "agent-pass", pass, sizeof(pass) - 1, 0);
......@@ -1843,9 +1776,8 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
#endif
/* Check again for accuracy */
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
ast_mutex_lock(&p->lock);
if (!strcmp(p->agent, user) &&
!strcmp(p->password, pass) && !p->pending) {
......@@ -1957,12 +1889,12 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
p->acknowledged = 0;
}
ast_mutex_unlock(&p->lock);
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
if( !res && play_announcement==1 )
res = ast_streamfile(chan, filename, chan->language);
if (!res)
ast_waitstream(chan, "");
ast_mutex_lock(&agentlock);
AST_LIST_LOCK(&agents);
ast_mutex_lock(&p->lock);
if (!res) {
res = ast_set_read_format(chan, ast_best_codec(chan->nativeformats));
......@@ -2001,7 +1933,7 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
if (option_verbose > 1)
ast_verbose(VERBOSE_PREFIX_2 "Callback Agent '%s' logged out\n", p->agent);
}
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
if (!res)
res = ast_safe_sleep(chan, 500);
ast_mutex_unlock(&p->lock);
......@@ -2033,7 +1965,7 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
else
check_availability(p, 0);
ast_mutex_unlock(&p->lock);
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
ast_device_state_changed("Agent/%s", p->agent);
while (res >= 0) {
ast_mutex_lock(&p->lock);
......@@ -2045,7 +1977,7 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
if (res)
break;
ast_mutex_lock(&agentlock);
AST_LIST_LOCK(&agents);
ast_mutex_lock(&p->lock);
if (p->lastdisc.tv_sec) {
if (ast_tvdiff_ms(ast_tvnow(), p->lastdisc) > p->wrapuptime) {
......@@ -2059,7 +1991,7 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
}
}
ast_mutex_unlock(&p->lock);
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
/* Synchronize channel ownership between call to agent and itself. */
ast_mutex_lock( &p->app_lock );
ast_mutex_lock(&p->lock);
......@@ -2072,11 +2004,11 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
agent_cont_sleep, p );
ast_mutex_unlock( &p->app_lock );
if ((p->ackcall > 1) && (res == 1)) {
ast_mutex_lock(&agentlock);
AST_LIST_LOCK(&agents);
ast_mutex_lock(&p->lock);
check_availability(p, 0);
ast_mutex_unlock(&p->lock);
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
res = 0;
}
sched_yield();
......@@ -2120,10 +2052,9 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
break;
}
ast_mutex_unlock(&p->lock);
p = p->next;
}
if (!p)
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
if (!res && (max_login_tries==0 || tries < max_login_tries))
res = ast_app_getdata(chan, errmsg, user, sizeof(user) - 1, 0);
......@@ -2229,11 +2160,9 @@ static int action_agent_callback_login(struct mansession *s, struct message *m)
return 0;
}
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
if (strcmp(p->agent, agent) || p->pending) {
p = p->next;
continue;
}
if (p->chan) {
......@@ -2270,9 +2199,8 @@ static int action_agent_callback_login(struct mansession *s, struct message *m)
ast_verbose(VERBOSE_PREFIX_2 "Callback Agent '%s' logged in on %s\n", p->agent, p->loginchan);
ast_device_state_changed("Agent/%s", p->agent);
ast_mutex_unlock(&p->lock);
p = p->next;
}
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
if (login_state == 1)
astman_send_ack(s, m, "Agent logged in");
......@@ -2313,18 +2241,17 @@ static int agentmonitoroutgoing_exec(struct ast_channel *chan, void *data)
char agentvar[AST_MAX_BUF];
snprintf(agentvar, sizeof(agentvar), "%s_%s", GETAGENTBYCALLERID, chan->cid.cid_num);
if ((tmp = pbx_builtin_getvar_helper(NULL, agentvar))) {
struct agent_pvt *p = agents;
struct agent_pvt *p;
ast_copy_string(agent, tmp, sizeof(agent));
ast_mutex_lock(&agentlock);
while (p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
if (!strcasecmp(p->agent, tmp)) {
if (changeoutgoing) snprintf(chan->cdr->channel, sizeof(chan->cdr->channel), "Agent/%s", p->agent);
__agent_start_monitoring(chan, p, 1);
break;
}
p = p->next;
}
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
} else {
res = -1;
......@@ -2357,7 +2284,7 @@ static void dump_agents(void)
struct agent_pvt *cur_agent = NULL;
char buf[256];
for (cur_agent = agents; cur_agent; cur_agent = cur_agent->next) {
AST_LIST_TRAVERSE(&agents, cur_agent, list) {
if (cur_agent->chan)
continue;
......@@ -2390,16 +2317,14 @@ static void reload_agents(void)
db_tree = ast_db_gettree(pa_family, NULL);
ast_mutex_lock(&agentlock);
AST_LIST_LOCK(&agents);
for (entry = db_tree; entry; entry = entry->next) {
agent_num = entry->key + strlen(pa_family) + 2;
cur_agent = agents;
while (cur_agent) {
AST_LIST_TRAVERSE(&agents, cur_agent, list) {
ast_mutex_lock(&cur_agent->lock);
if (strcmp(agent_num, cur_agent->agent) == 0)
break;
ast_mutex_unlock(&cur_agent->lock);
cur_agent = cur_agent->next;
}
if (!cur_agent) {
ast_db_del(pa_family, agent_num);
......@@ -2423,7 +2348,7 @@ static void reload_agents(void)
ast_device_state_changed("Agent/%s", cur_agent->agent);
}
}
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
if (db_tree) {
ast_log(LOG_NOTICE, "Agents successfully reloaded from database.\n");
ast_db_freetree(db_tree);
......@@ -2451,9 +2376,8 @@ static int agent_devicestate(void *data)
}
/* Check actual logged in agents first */
ast_mutex_lock(&agentlock);
p = agents;
while(p) {
AST_LIST_LOCK(&agents);
AST_LIST_TRAVERSE(&agents, p, list) {
ast_mutex_lock(&p->lock);
if (!p->pending && ((groupmatch && (p->group & groupmatch)) || !strcmp(data, p->agent))) {
if (p->owner) {
......@@ -2474,17 +2398,16 @@ static int agent_devicestate(void *data)
}
}
ast_mutex_unlock(&p->lock);
p = p->next;
}
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
return res;
}
struct agent_pvt *find_agent(char *agentid)
{
struct agent_pvt *cur = agents;
struct agent_pvt *cur;
for (; cur; cur = cur->next) {
AST_LIST_TRAVERSE(&agents, cur, list) {
if (!strcmp(cur->agent, agentid))
break;
}
......@@ -2621,16 +2544,14 @@ int unload_module()
ast_manager_unregister("AgentCallbackLogin");
/* Unregister channel */
ast_channel_unregister(&agent_tech);
if (!ast_mutex_lock(&agentlock)) {
if (!AST_LIST_LOCK(&agents)) {
/* Hangup all interfaces if they have an owner */
p = agents;
while(p) {
AST_LIST_TRAVERSE(&agents, p, list) {
if (p->owner)
ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
p = p->next;
}
agents = NULL;
ast_mutex_unlock(&agentlock);
AST_LIST_UNLOCK(&agents);
AST_LIST_HEAD_INIT(&agents);
} else {
ast_log(LOG_WARNING, "Unable to lock the monitor\n");
return -1;
......
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