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irc.c
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/******************************************************************************
* Copyright (C) 2008 - 2014 Andreas Öman
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
******************************************************************************/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdarg.h>
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <poll.h>
#include <fcntl.h>
#include <errno.h>
#include <ctype.h>
#include "dial.h"
#include "queue.h"
#include "htsbuf.h"
#include "strtab.h"
#include "trace.h"
#include "misc.h"
#include "tcp.h"
#include "cfg.h"
#include "irc.h"
#include "cmd.h"
#include "talloc.h"
#define IRC_NICK_RECLAIM_INTERVAL 60
#define IRC_CHANNEL_RETRY_INTERVAL 10
#define DO_IN(x) (get_ts() + (x) * 1000000LL)
#define IRC_CMD_MAX_PARAMS 64
#define IRC_CMD_NOTICE -2
#define IRC_CMD_JOIN -3
#define IRC_CMD_PING -4
#define IRC_CMD_KICK -5
#define IRC_CMD_NICK -6
const static struct strtab IRC_cmdtab[] = {
{ "NOTICE", IRC_CMD_NOTICE },
{ "JOIN", IRC_CMD_JOIN },
{ "PING", IRC_CMD_PING },
{ "KICK", IRC_CMD_KICK },
{ "NICK", IRC_CMD_NICK },
};
LIST_HEAD(irc_client_list, irc_client);
LIST_HEAD(channel_list, channel);
TAILQ_HEAD(irc_out_msg_queue, irc_out_msg);
TAILQ_HEAD(msg_target_queue, msg_target);
/**
*
*/
typedef struct irc_out_msg {
TAILQ_ENTRY(irc_out_msg) iom_link;
int iom_length;
time_t iom_expire;
char iom_data[0];
} irc_out_msg_t;
/**
*
*/
typedef struct msg_target {
TAILQ_ENTRY(msg_target) mt_link;
struct irc_out_msg_queue mt_q;
} msg_target_t;
#define IRC_CHANNEL_NOT_JOINED 0
#define IRC_CHANNEL_JOIN_PENDING -1
#define IRC_CHANNEL_JOINED -2
/**
*
*/
typedef struct channel {
LIST_ENTRY(channel) c_link;
char *c_name;
int c_state;
int c_want_join;
msg_target_t c_tgt;
} channel_t;
/**
*
*/
typedef struct irc_client {
LIST_ENTRY(irc_client) ic_link;
pthread_t ic_thread;
char *ic_current_nick;
int ic_pipe[2];
struct pollfd ic_fds[2];
tcp_stream_t *ic_ts;
char *ic_url;
char *ic_logid;
char *ic_server_hostname;
char *ic_server_password;
int ic_server_port;
int ic_server_ssl;
char *ic_username;
char *ic_userinfo;
char ic_registered; /* Set if we have successfully registered
If this is not set we should not try
to JOIN channels, PRIVMSG targets, etc
*/
int ic_disconnect_sleep; /* Time to sleep before reconnecting
Reset to 1 when we manage to register
*/
struct irc_out_msg_queue ic_cmdq;
int64_t ic_cmdq_nextsend;
int ic_cmdq_mintime;
struct msg_target_queue ic_msgq; // PRIVMSG/NOTICE arbitration queue
int64_t ic_msgq_nextsend;
int ic_msgq_mintime;
// Timeouts
int64_t ic_next_channel_scan;
int64_t ic_next_reclaim_nick;
// Configurable stuff
char *ic_wanted_nick;
struct channel_list ic_channels;
int ic_dotrace;
} irc_client_t;
static pthread_mutex_t irc_mutex = PTHREAD_MUTEX_INITIALIZER;
static struct irc_client_list irc_clients;
/**
*
*/
static void
irc_send(irc_client_t *ic, const char *fmt, ...)
{
char buf[1024];
va_list ap;
va_start(ap, fmt);
int l = vsnprintf(buf, sizeof(buf)-2, fmt, ap);
va_end(ap);
buf[l++] = '\r';
buf[l++] = '\n';
irc_out_msg_t *iom = malloc_add(sizeof(irc_out_msg_t), l);
iom->iom_length = l;
memcpy(iom->iom_data, buf, l);
TAILQ_INSERT_TAIL(&ic->ic_cmdq, iom, iom_link);
}
/**
*
*/
static void
permute_nick(irc_client_t *ic)
{
char buf[128];
int len = strcspn(ic->ic_current_nick, "0123456789");
int v = atoi(ic->ic_current_nick + len) + 1;
snprintf(buf, sizeof(buf), "%.*s%d", len, ic->ic_current_nick, v);
free(ic->ic_current_nick);
ic->ic_current_nick = strdup(buf);
trace(LOG_INFO, "IRC: %s: Switching current nick to %s", ic->ic_logid, buf);
}
/**
*
*/
static int
irc_expire_messages(irc_client_t *ic)
{
channel_t *c;
time_t now = time(NULL);
int anything = 0;
LIST_FOREACH(c, &ic->ic_channels, c_link) {
msg_target_t *mt = &c->c_tgt;
irc_out_msg_t *msg, *next;
if(TAILQ_FIRST(&mt->mt_q) == NULL)
continue;
for(msg = TAILQ_FIRST(&mt->mt_q); msg != NULL; msg = next) {
next = TAILQ_NEXT(msg, iom_link);
if(msg->iom_expire < now) {
printf("Removed too old msg: %.*s\n", msg->iom_length,
msg->iom_data);
TAILQ_REMOVE(&mt->mt_q, msg, iom_link);
free(msg);
}
}
if(TAILQ_FIRST(&mt->mt_q)) {
anything = 1;
} else {
if(c->c_state == IRC_CHANNEL_JOINED) {
TAILQ_REMOVE(&ic->ic_msgq, mt, mt_link);
}
}
}
return anything;
}
/**
*
*/
static void
irc_check_channels(irc_client_t *ic)
{
channel_t *c;
LIST_FOREACH(c, &ic->ic_channels, c_link) {
if(c->c_want_join) {
if(c->c_state != IRC_CHANNEL_JOIN_PENDING &&
c->c_state != IRC_CHANNEL_JOINED) {
irc_send(ic, "JOIN %s", c->c_name);
c->c_state = IRC_CHANNEL_JOIN_PENDING;
}
}
}
}
/**
*
*/
static channel_t *
find_channel(irc_client_t *ic, const char *channel)
{
channel_t *c;
LIST_FOREACH(c, &ic->ic_channels, c_link)
if(!strcmp(c->c_name, channel))
return c;
c = calloc(1, sizeof(channel_t));
c->c_name = strdup(channel);
TAILQ_INIT(&c->c_tgt.mt_q);
LIST_INSERT_HEAD(&ic->ic_channels, c, c_link);
return c;
}
/**
*
*/
static void
irc_handle_kick(irc_client_t *ic, const char *channel, const char *victim)
{
int self = !strcmp(ic->ic_current_nick, victim);
channel_t *c = find_channel(ic, channel);
if(self) {
c->c_state = IRC_CHANNEL_NOT_JOINED;
if(TAILQ_FIRST(&c->c_tgt.mt_q) != NULL)
TAILQ_REMOVE(&ic->ic_msgq, &c->c_tgt, mt_link);
trace(LOG_INFO, "IRC: %s: I was kicked from %s", ic->ic_logid, channel);
c->c_want_join = 0;
}
}
/**
*
*/
static void
irc_handle_join(irc_client_t *ic, const char *nick, const char *channel)
{
int self = !strcmp(ic->ic_current_nick, nick);
channel_t *c = find_channel(ic, channel);
if(self) {
c->c_state = IRC_CHANNEL_JOINED;
trace(LOG_INFO, "IRC: %s: Joined %s%s", ic->ic_logid, channel,
TAILQ_FIRST(&c->c_tgt.mt_q) ?
", for which I have some pending messages" : "");
if(TAILQ_FIRST(&c->c_tgt.mt_q) != NULL)
TAILQ_INSERT_TAIL(&ic->ic_msgq, &c->c_tgt, mt_link);
}
}
/**
*
*/
static void
irc_handle_unable_to_join(irc_client_t *ic, const char *channel, int code)
{
channel_t *c = find_channel(ic, channel);
assert(c->c_state == IRC_CHANNEL_JOIN_PENDING);
c->c_state = code;
trace(LOG_WARNING, "IRC: %s: Unable to join %s -- reason %d",
ic->ic_logid, channel, c->c_state);
if(!ic->ic_next_channel_scan)
ic->ic_next_channel_scan = DO_IN(IRC_CHANNEL_RETRY_INTERVAL);
}
/**
*
*/
static void
irc_handle_nick(irc_client_t *ic, const char *srcnick, const char *newnick)
{
if(!strcmp(ic->ic_current_nick, srcnick)) {
trace(LOG_INFO, "IRC: %s: Changed my nick from %s to %s",
ic->ic_logid, ic->ic_current_nick, newnick);
free(ic->ic_current_nick);
ic->ic_current_nick = strdup(newnick);
if(strcmp(ic->ic_current_nick, ic->ic_wanted_nick))
ic->ic_next_reclaim_nick = DO_IN(IRC_NICK_RECLAIM_INTERVAL);
}
}
/**
*
*/
static int
irc_recv_line(irc_client_t *ic, char *p)
{
const char *prefix = NULL;
const char *command = NULL;
const char *argv[IRC_CMD_MAX_PARAMS];
int code = -1, argc = 0;
char *x, *y;
// Parse prefix
if(p[0] == ':') {
prefix = p + 1;
if((x = strchr(p + 1, ' ')) == NULL) {
trace(LOG_NOTICE, "IRC: %s: Protocol violation -- Missing space",
ic->ic_logid);
return 1;
}
*x++ = 0;
p = x;
}
if(isdigit(p[0]) && isdigit(p[1]) && isdigit(p[2])) {
p[3] = 0;
code = atoi(p);
p += 4;
} else {
command = p;
if((x = strchr(p, ' ')) == NULL) {
trace(LOG_NOTICE, "IRC: %s: Protocol violation -- No space after command",
ic->ic_logid);
return 1;
}
*x++ = 0;
p = x;
}
while(1) {
if(argc == IRC_CMD_MAX_PARAMS) {
trace(LOG_NOTICE, "IRC: %s: Too many parameters", ic->ic_logid);
return 0;
}
if(*p == ':') {
// Last parameter
argv[argc++] = p + 1;
break;
}
argv[argc++] = p;
x = strchr(p, ' ');
if(x == NULL)
break;
*x = 0;
p = x+1;
}
if(code == -1) {
code = str2val(command, IRC_cmdtab);
if(code == -1) {
if(ic->ic_dotrace)
trace(LOG_DEBUG, "IRC: %s: Unknown command %s", ic->ic_logid, command);
return 0;
}
}
// - Decompose prefix
const char *srcnick = NULL;
if(prefix != NULL) {
x = mystrdupa(prefix);
if((y = strchr(x, '!')) != NULL) {
srcnick = x;
*y = 0;
}
}
// --------------
switch(code) {
case 433:
// Nickname already in use
if(argc < 1)
return 1;
if(strcmp(argv[0], ic->ic_current_nick)) {
permute_nick(ic);
irc_send(ic, "NICK %s", ic->ic_current_nick);
}
ic->ic_next_reclaim_nick = DO_IN(IRC_NICK_RECLAIM_INTERVAL);
return 0;
case 376: // End of MOTD
case 422: // No MOTD
ic->ic_registered = 1;
ic->ic_disconnect_sleep = 1;
irc_check_channels(ic);
return 0;
case 403: // No such channel
case 405: // Too many channels for client
case 471: // Channel is full
case 473: // Invite only
case 474: // Bannned form channel
case 475: // Bad key
if(argc < 2)
return 1;
irc_handle_unable_to_join(ic, argv[1], code);
return 0;
case IRC_CMD_JOIN:
if(argc < 1 || srcnick == NULL)
return 1;
irc_handle_join(ic, srcnick, argv[0]);
return 0;
case IRC_CMD_KICK:
if(argc < 2)
return 1;
irc_handle_kick(ic, argv[0], argv[1]);
return 0;
case IRC_CMD_PING:
if(argc < 1)
return 1;
irc_send(ic, "PONG :%s", argv[0]);
return 0;
case IRC_CMD_NICK:
irc_handle_nick(ic, srcnick, argv[0]);
return 0;
default:
return 0;
}
}
/**
*
*/
static int
irc_parse_input(irc_client_t *ic, htsbuf_queue_t *q)
{
while(1) {
int ll = htsbuf_find(q, 0x0d);
if(ll == -1)
return 0;
char *line = alloca(ll + 1);
htsbuf_read(q, line, ll);
htsbuf_drop(q, 2); // Drop \r\n
line[ll] = 0;
if(ic->ic_dotrace)
trace(LOG_DEBUG, "IRC: %s: RECV: %s", ic->ic_logid, line);
if(irc_recv_line(ic, line))
return 1;
}
}
/**
*
*/
static void
irc_client_cleanup(irc_client_t *ic)
{
ic->ic_registered = 0;
free(ic->ic_current_nick);
ic->ic_current_nick = NULL;
ic->ic_next_reclaim_nick = 0;
ic->ic_next_channel_scan = 0;
channel_t *c;
LIST_FOREACH(c, &ic->ic_channels, c_link) {
if(TAILQ_FIRST(&c->c_tgt.mt_q) != NULL && c->c_state == IRC_CHANNEL_JOINED)
TAILQ_REMOVE(&ic->ic_msgq, &c->c_tgt, mt_link);
c->c_state = IRC_CHANNEL_NOT_JOINED;
}
}
/**
*
*/
static void
refresh_cfg(irc_client_t *ic)
{
cfg_root(root);
#if 0
const char *nick = cfg_get_str(root, CFG("ircbot", ic->ic_server, "nick"),
"doozer");
if(strcmp(nick, ic->ic_wanted_nick)) {
free(ic->ic_wanted_nick);
ic->ic_wanted_nick = strdup(nick);
trace(LOG_INFO, "IRC: %s: Switching nick to %s", ic->ic_server, nick);
irc_send(ic, "NICK %s", ic->ic_wanted_nick);
}
#endif
ic->ic_dotrace = cfg_get_int(root, CFG("ircbot", "trace"), 0);
}
/**
*
*/
static void
reconnect(irc_client_t *ic)
{
irc_send(ic, "QUIT");
}
/**
*
*/
static int
irc_handle_pipe_command(irc_client_t *ic, char cmd)
{
switch(cmd) {
case 'c':
if(ic->ic_registered)
irc_check_channels(ic);
return 0;
case 'm':
// New messages will be taken care of in the main loop
return 0;
case 'o':
refresh_cfg(ic);
return 0;
case 'r':
reconnect(ic);
return 0;
default:
return 0;
}
}
/**
*
*/
static int
iom_write(irc_client_t *ic, struct irc_out_msg_queue *q)
{
irc_out_msg_t *iom = TAILQ_FIRST(q);
tcp_write(ic->ic_ts, iom->iom_data, iom->iom_length);
if(ic->ic_dotrace)
trace(LOG_DEBUG, "IRC: %s: SEND: %.*s", ic->ic_logid,
iom->iom_length - 2, iom->iom_data);
TAILQ_REMOVE(q, iom, iom_link);
free(iom);
return 0;
}
/**
* irc[s]://username:[email protected]:6667
*/
static tcp_stream_t *
irc_do_connect(irc_client_t *ic, char *errbuf, size_t errlen)
{
cfg_root(root);
trace(LOG_INFO, "IRC: %s: Attempting to connect using %s:%d%s",
ic->ic_logid, ic->ic_server_hostname, ic->ic_server_port,
ic->ic_server_ssl ? " SSL" : "");
ic->ic_dotrace = cfg_get_int(root, CFG("ircbot", "trace"), 0);
tcp_ssl_info_t tsi = {};
int timo = 10;
return dial(ic->ic_server_hostname, ic->ic_server_port,
timo * 1000, ic->ic_server_ssl ? &tsi : NULL, errbuf, errlen);
}
/**
*
*/
static void
irc_register(irc_client_t *ic)
{
cfg_root(root);
const char *username =
cfg_get_str(root, CFG("ircbot", "username"), ic->ic_wanted_nick);
const char *userinfo =
cfg_get_str(root, CFG("ircbot", "userinfo"), "Just a lonely bot");
if(ic->ic_server_password != NULL)
irc_send(ic, "PASS %s", ic->ic_server_password);
irc_send(ic, "NICK %s", ic->ic_wanted_nick);
irc_send(ic, "USER %s unset unset :%s", username, userinfo);
}
/**
*
*/
static void *
irc_thread(void *aux)
{
irc_client_t *ic = aux;
int backoff = 5;
int run = 1;
char errbuf[256];
ic->ic_ts = NULL;
ic->ic_disconnect_sleep = 1;
while(run) {
talloc_cleanup();
if(ic->ic_ts != NULL)
tcp_close(ic->ic_ts);
ic->ic_ts = irc_do_connect(ic, errbuf, sizeof(errbuf));
if(ic->ic_ts == NULL) {
backoff = MIN(backoff * 2, 30);
trace(LOG_ERR, "IRC: %s: Unable to connect -- %s -- Retry in %d seconds",
ic->ic_logid, errbuf, backoff);
sleep(backoff);
pthread_mutex_lock(&irc_mutex);
int anything = irc_expire_messages(ic);
pthread_mutex_unlock(&irc_mutex);
if(anything)
continue;
trace(LOG_INFO,
"IRC: %s: No messages to send, stopping reconnect attempts",
ic->ic_logid);
break;
}
trace(LOG_INFO, "IRC: %s: Connection established", ic->ic_logid);
backoff = 5;
tcp_nonblock(ic->ic_ts, 1);
ic->ic_fds[1].fd = ic->ic_pipe[0];
ic->ic_fds[1].events = POLLIN | POLLERR | POLLHUP;
ic->ic_fds[1].revents = 0;
htsbuf_queue_t recvq;
htsbuf_queue_init(&recvq, 0);
irc_register(ic);
assert(ic->ic_current_nick == NULL);
ic->ic_current_nick = strdup(ic->ic_wanted_nick);
while(run) {
talloc_cleanup();
int timeout = -1;
int64_t now = get_ts(), next = INT64_MAX;
pthread_mutex_lock(&irc_mutex);
if(ic->ic_next_channel_scan && now >= ic->ic_next_channel_scan) {
ic->ic_next_channel_scan = 0;
irc_check_channels(ic);
}
if(ic->ic_next_reclaim_nick && now >= ic->ic_next_reclaim_nick) {
ic->ic_next_reclaim_nick = 0;
irc_send(ic, "NICK %s", ic->ic_wanted_nick);
}
if(TAILQ_FIRST(&ic->ic_msgq) != NULL && ic->ic_msgq_nextsend <= now) {
ic->ic_msgq_nextsend = now + ic->ic_msgq_mintime;
msg_target_t *mt = TAILQ_FIRST(&ic->ic_msgq);
iom_write(ic, &mt->mt_q);
TAILQ_REMOVE(&ic->ic_msgq, mt, mt_link);
if(TAILQ_FIRST(&mt->mt_q) != NULL)
TAILQ_INSERT_TAIL(&ic->ic_msgq, mt, mt_link);
}
if(TAILQ_FIRST(&ic->ic_msgq) != NULL)
next = MIN(next, ic->ic_msgq_nextsend);
pthread_mutex_unlock(&irc_mutex);
if(TAILQ_FIRST(&ic->ic_cmdq) != NULL && ic->ic_cmdq_nextsend <= now) {
ic->ic_cmdq_nextsend = now + ic->ic_cmdq_mintime;
iom_write(ic, &ic->ic_cmdq);
}
if(TAILQ_FIRST(&ic->ic_cmdq) != NULL)
next = MIN(next, ic->ic_cmdq_nextsend);
if(ic->ic_next_channel_scan)
next = MIN(next, ic->ic_next_channel_scan);
if(ic->ic_next_reclaim_nick)
next = MIN(next, ic->ic_next_reclaim_nick);
if(next <= now)
timeout = 0;
else if(next == INT64_MAX)
timeout = -1;
else
timeout = (next - now + 999) / 1000;
tcp_prepare_poll(ic->ic_ts, &ic->ic_fds[0]);
int r = poll(ic->ic_fds, 2, timeout);
if(r == -1) {
if(errno == EINTR)
continue;
trace(LOG_ERR, "IRC: %s: poll() -- %s",
ic->ic_logid, strerror(errno));
break;
}
if(r == 0)
continue;
if(ic->ic_fds[1].revents & (POLLERR | POLLHUP)) {
trace(LOG_NOTICE, "IRC: %s: Terminating session", ic->ic_logid);
run = 0;
break;
}
if(ic->ic_fds[1].revents & POLLIN) {
char c;
if(read(ic->ic_pipe[0], &c, 1) != 1) {
trace(LOG_ERR, "IRC: %s: Pipe error -- %s", ic->ic_logid, strerror(errno));
run = 0;
break;
}
pthread_mutex_lock(&irc_mutex);
r = irc_handle_pipe_command(ic, c);
pthread_mutex_unlock(&irc_mutex);
if(r)
break;
}
if(ic->ic_fds[0].revents & (POLLERR | POLLHUP)) {
int err = tcp_get_errno(ic->ic_ts);
trace(LOG_ERR, "IRC: %s: Connection lost -- %s",
ic->ic_logid, strerror(err));
break;
}
if(tcp_can_read(ic->ic_ts, &ic->ic_fds[0])) {
while(1) {
char buf[1024];
int r = tcp_read(ic->ic_ts, buf, sizeof(buf));
if(r == 0) {
trace(LOG_ERR,
"IRC: %s: Connection lost -- Connection reset by peer",
ic->ic_logid);
goto disconnect;
}
if(r == -1) {
if(errno == EAGAIN || errno == EWOULDBLOCK)
break;
trace(LOG_ERR, "IRC: %s: Connection lost -- %s",
ic->ic_logid, strerror(errno));
goto disconnect;
}
htsbuf_append(&recvq, buf, r);
pthread_mutex_lock(&irc_mutex);
r = irc_parse_input(ic, &recvq);
pthread_mutex_unlock(&irc_mutex);
if(r) {
trace(LOG_ERR, "IRC: %s: Protocol violation, disconnecting",
ic->ic_logid);
goto disconnect;
}
}
}
}
disconnect:
htsbuf_queue_flush(&recvq);
tcp_close(ic->ic_ts);
ic->ic_ts = NULL;
if(!run)
break;
pthread_mutex_lock(&irc_mutex);
irc_client_cleanup(ic);
pthread_mutex_unlock(&irc_mutex);
trace(LOG_INFO, "IRC: %s: Reconnect in %d seconds",
ic->ic_logid, ic->ic_disconnect_sleep);
sleep(ic->ic_disconnect_sleep);
ic->ic_disconnect_sleep = MIN(ic->ic_disconnect_sleep * 2, 120);
}
if(ic->ic_ts != NULL)
tcp_close(ic->ic_ts);
close(ic->ic_pipe[0]);
pthread_mutex_lock(&irc_mutex);
irc_client_cleanup(ic);
LIST_REMOVE(ic, ic_link);
free(ic->ic_server_hostname);
free(ic->ic_server_password);
free(ic->ic_wanted_nick);
free(ic->ic_logid);
free(ic->ic_url);
free(ic);
pthread_mutex_unlock(&irc_mutex);
return NULL;
}
/**
*
*/
static void
irc_client_notify(irc_client_t *ic, char cmd)
{
if(write(ic->ic_pipe[1], &cmd, 1) < 0) {
trace(LOG_ERR, "IRC: %s: Pipe write failed -- %s",
ic->ic_logid, strerror(errno));
}
}
/**
*
*/
static int
irc_decode_url(irc_client_t *ic, const char *url)
{
const char *x;
int ssl = 0;
x = mystrbegins(url, "ircs://");
if(x != NULL) {
ssl = 1;
} else {
x = mystrbegins(url, "irc://");
if(x == NULL) {
return -1;
}
}
char *username = mystrdupa(x);
char *hostname = strchr(username, '@');
if(hostname == NULL) {
return -1;
}
*hostname++ = 0;
char *password = strchr(username, ':');
if(password != NULL) {
*password++ = 0;
if(strlen(password) == 0)
password = NULL;
}
char *portstr = strchr(hostname, ':');
int port = ssl ? 6697 : 6667;
if(portstr != NULL) {
*portstr++ = 0;
port = atoi(portstr);
}
ic->ic_server_hostname = strdup(hostname);
ic->ic_server_password = password ? strdup(password) : NULL;
ic->ic_server_port = port;
ic->ic_server_ssl = ssl;
ic->ic_wanted_nick = strdup(username);
char logid[512];
snprintf(logid, sizeof(logid), "%s@%s:%d", username, hostname, port);
ic->ic_logid = strdup(logid);
return 0;
}
/**
*
*/
static irc_client_t *
irc_get_server(const char *url)
{
irc_client_t *ic;
LIST_FOREACH(ic, &irc_clients, ic_link)
if(!strcmp(url, ic->ic_url))
return ic;
ic = calloc(1, sizeof(irc_client_t));
if(irc_decode_url(ic, url)) {
free(ic);
return NULL;