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hasses.c
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hasses.c
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/* Asynchronous SSE Server
* Author: Peter Deak (hyper80@gmail.com)
* License: GPL
*/
#include <sys/types.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
#include <sys/socket.h>
#include <sys/epoll.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <unistd.h>
#include <signal.h>
#include <time.h>
#include <pwd.h>
#include "cdata.h"
#include "chat.h"
#include "hasses.h"
#include "cio.h"
/* Example chat:
-> GET /sse?subscribe=XXX HTTP/1.1
-> Host: 192.168.1.100:80
-> User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0
-> Accept: text/event-stream
-> Accept-Language: en-US,en;q=0.5
-> DNT: 1
-> Referer: http://192.168.1.200/sse2/
-> Origin: http://192.168.1.200
-> Connection: keep-alive
-> Pragma: no-cache
-> Cache-Control: no-cache
<- HTTP/1.1 200 OK
<- Date: Wed, 14 Jan 2015 21:01:35 GMT
<- Server: Apache/2.2.22 (Debian)
<- X-Powered-By: PHP/5.4.35-0+deb7u2
<- Cache-Control: no-cache
<- Keep-Alive: timeout=5, max=100
<- Connection: Keep-Alive
<- Transfer-Encoding: chunked
<- Content-Type: text/event-stream
<-
<- e8
<- id: 1421269313
<- data: Hello this is the first
*/
struct Hasses_Settings hsettings;
struct Hasses_Statistics stats;
//other
char *input = NULL;
time_t last_cli_ttl_check = 0;
int epoll_descriptor;
time_t log_oldrawtime=1;
char log_timebuf[80];
struct CommCli *commFirst = NULL; //First Communication client
void beforeExit(void)
{
if(strlen(hsettings.pidfile) > 0)
if(unlink(hsettings.pidfile) != 0)
toLog(0,"Warning: Cannot delete pid file!\n");
}
void sigint_handler(int sig)
{
beforeExit();
toLog(0,"Received INT/TERM signal, Exiting...\n");
exit(0);
}
int name_to_uid(char const *name)
{
if(name==NULL || strlen(name) <= 0)
return -1;
struct passwd *pwd = getpwnam(name);
if(pwd != NULL)
return pwd->pw_uid;
return -1;
}
int create_and_bind(int port)
{
char portstr[10];
struct addrinfo hints;
struct addrinfo *result, *rp;
int s, sfd,optval=1;
toLog(2,"Create/bind listening socket (%d)...\n",port);
memset(&hints, 0, sizeof (struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
snprintf(portstr,10,"%d",port);
s = getaddrinfo (NULL,portstr, &hints, &result);
if(s != 0)
{
toLog(0,"Error in getaddrinfo: %s\n", gai_strerror(s));
return -1;
}
for (rp = result; rp != NULL; rp = rp->ai_next)
{
sfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if (sfd == -1)
continue;
s = setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR,&optval,sizeof(optval));
if(s != 0)
{
toLog(0,"Error, setsockopt() failure\n");
return -1;
}
s = bind (sfd, rp->ai_addr, rp->ai_addrlen);
if (s == 0)
{
/* We managed to bind successfully! */
toLog(2,"Bind to port:%s <%d>\n",portstr,sfd);
break;
}
close(sfd);
}
if (rp == NULL)
{
toLog(0,"Error, could not bind socket on port %d\n",port);
return -1;
}
freeaddrinfo(result);
toLog(2,"Socket created and bound.\n");
return sfd;
}
int make_socket_non_blocking(int sfd)
{
int flags, s;
flags = fcntl(sfd, F_GETFL, 0);
if (flags == -1)
{
toLog(0,"Error, fcntl() failure in make_socket_non_blocking (1)\n");
return 1;
}
flags |= O_NONBLOCK;
s = fcntl(sfd, F_SETFL, flags);
if (s == -1)
{
toLog(0,"Error, fcntl() in make_socket_non_blocking (2)\n");
return 1;
}
return 0;
}
int close_client(int d)
{
/* Closing the descriptor will make epoll remove it
from the set of descriptors which are monitored.
this below may unnecessary */
epoll_ctl(epoll_descriptor,EPOLL_CTL_DEL,d,NULL);
cio_client_close(client_get(d));
close(d);
//Remove from my list
client_del(d);
toLog(1,"Closed connection (Remaining clients: %d) <%d>\n",client_count(),d);
return 0;
}
int close_communication_client(int d)
{
/* Closing the descriptor will make epoll remove it
from the set of descriptors which are monitored.
this below may unnecessary */
epoll_ctl(epoll_descriptor,EPOLL_CTL_DEL,d,NULL);
close(d);
commclient_del(d);
toLog(2,"Closed communication connection <%d>\n",client_count(),d);
return 0;
}
int printversion(void)
{
printf("Hyper's async SSE (Server Sent Event) server\n"
"Version: %s\n"
"Compiled: %s\n"
"Author: Peter Deak (hyper80@gmail.com)\n"
"License: GPL\n",VERSION, __DATE__);
return 0;
}
int printhelp(void)
{
printf("Hyper's async SSE (Server Sent Event) server\n"
"Usage:\n hasses -p=<SSE_PORT> -murl=<MATCHING_URL>\n"
" [-cp=<COMM_PORT>] [-fifo=<FIFOFILE>] [-sep=<delimiter>]\n"
" [-q|-debug] [-l=<LOGFILE>] [-pidfile=<PIDFILE>]\n"
" [-ssl] [-cert-file=<PEMFILE>] [-privatekey-file=<KEYFILE>]\n"
" [-cors-base=<URL>] [-ra] [-user=<USER>] [-nodaemon]\n"
"Commands on communication channel or fifo file:\n"
" \"status\" - Print status/statistics to the log\n"
" \"tcpstatus\" - Send status/statistics back to the sender\n"
" \"clientlist\" - List clients to the log\n"
" \"loglevel_quiet\" - Set loglevel to minimal\n"
" \"loglevel_normal\" - Set loglevel to normal\n"
" \"loglevel_debug\" - Set loglevel to maximum\n"
" \"numberofclients\" - Print number of clients to the log\n"
" \"tcpnumberofclients\" - Send number of clients back to the sender\n"
" \"reinit_enable\" - Enable re-initialize opened connections\n"
" \"reinit_disable\" - Enable re-initialize opened connections\n"
" \"subscribedclients:<sub>\" - Print number of the subscribed clients to the log\n"
" \"tcpsubscribedclients:<sub>\" - Send number of the subscribed clients back to the sender\n"
" \"<token>=<message>\" - Send message to the subscribers of <token>\n"
" \"<token>=<message>;<token2>=<message2>\" - Send more messages\n"
" \"<token>-<rId>=<message>\" - Send message to the subscribers of <token> except <rId>\n"
" \"*=<message>;\" - Send message to all clients\n\n");
return 0;
}
void attach_signal_handler(void)
{
struct sigaction sa;
sa.sa_handler = sigint_handler;
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
if(sigaction(SIGINT, &sa, NULL) == -1)
{
toLog(0,"Error, Cannot set signal handler: sigaction() failure. Exiting...\n");
beforeExit();
exit(1);
}
if(sigaction(SIGTERM, &sa, NULL) == -1)
{
toLog(0,"Error, Cannot set signal handler: sigaction() failure. Exiting...\n");
beforeExit();
exit(1);
}
}
int create_open_fifo(const char *fifofile)
{
int s;
int fifo;
toLog(2,"Create/open fifo file: %s\n",fifofile);
//Create the FIFO (ignore the error if it already exists).
if( mkfifo(fifofile, 0666 ) < 0 )
{
if(errno != EEXIST )
{
toLog(0,"Error creating fifo file:%s mkfifo() failure. Exiting...\n",fifofile);
beforeExit();
exit(1);
}
}
fifo = open(fifofile,O_RDWR);
if( fifo < 0 )
{
toLog(0,"Error opening fifo file:%s Exiting...\n",fifofile);
beforeExit();
exit(1);
}
toLog(2,"FIFO opened.\n" );
s = make_socket_non_blocking (fifo);
if(s != 0)
{
toLog(0,"Cannot setup fifo device, Exiting...\n");
beforeExit();
exit(1);
}
toLog(2,"FIFO is non blocking.\n");
return fifo;
}
int my_cio_high_read(struct CliConn *client,char *buffer)
{
if(strlen(buffer) > 0)
{
toLog(2,"Received from %s <%d>:\n",client->info,client->descr);
chat_received(client,buffer,hsettings.match_url);
}
return 0;
}
int my_cio_low_write(struct CliConn *client,char *buffer,int length)
{
int s;
if(client->err)
return 1;
s=write(client->descr,buffer,length);
if(s != length)
{
client->err = 1;
return 1;
}
return 0;
}
int main(int argi,char **argc)
{
int s;
int sfd = -1;
int commfd = -1;
int port = 0;
int commport = 0;
hsettings.loglevel = 1;
hsettings.use_ssl = 0;
hsettings.reinit_allowed = 0;
hsettings.paramuid=-1;
hsettings.nodaemon=0;
h_strlcpy(hsettings.pidfile,"",128);
h_strlcpy(hsettings.match_url,"",64);
h_strlcpy(hsettings.fifofile,"",128);
h_strlcpy(hsettings.logfile,"/var/log/hasses.log",128);
h_strlcpy(hsettings.paramuser,"",64);
h_strlcpy(hsettings.certfile,"",128);
h_strlcpy(hsettings.pkeyfile,"",128);
h_strlcpy(hsettings.corsbase,"*",128);
h_strlcpy(hsettings.delimiter,";",2);
stats.startDaemon = 0;
stats.maxclients = 0;
stats.allclient = 0;
stats.allreinit = 0;
stats.allmessage = 0;
stats.allsmessage = 0;
h_strlcpy(log_timebuf,"error:",80);
if(argi <= 1)
{
printhelp();
return 0;
}
int p;
for(p = 1 ; p < argi ; ++p)
{
if(!strcmp(argc[p],"-h") || !strcmp(argc[p],"-help"))
return printhelp();
if(!strcmp(argc[p],"-v") || !strcmp(argc[p],"-V") || !strcmp(argc[p],"-version"))
return printversion();
if(!strcmp(argc[p],"-q"))
{
hsettings.loglevel = 0;
continue;
}
if(!strcmp(argc[p],"-debug"))
{
hsettings.loglevel = 2;
continue;
}
if(!strcmp(argc[p],"-ra"))
{
hsettings.reinit_allowed = 1;
continue;
}
if(!strcmp(argc[p],"-nodaemon"))
{
hsettings.nodaemon = 1;
continue;
}
if(!strcmp(argc[p],"-ssl"))
{
hsettings.use_ssl = 1;
continue;
}
if(!strncmp(argc[p],"-murl=",6) && strlen(argc[p]) > 6)
{
h_strlcpy(hsettings.match_url,argc[p]+6,63);
continue;
}
if(!strncmp(argc[p],"-p=",3) && strlen(argc[p]) > 3)
{
if(sscanf(argc[p]+3,"%d",&port) == 1 && port > 0)
continue;
}
if(!strncmp(argc[p],"-cp=",4) && strlen(argc[p]) > 4)
{
if(sscanf(argc[p]+4,"%d",&commport) == 1 && commport > 0)
continue;
}
if(!strncmp(argc[p],"-l=",3) && strlen(argc[p]) > 3)
{
h_strlcpy(hsettings.logfile,argc[p]+3,127);
continue;
}
if(!strncmp(argc[p],"-fifo=",6) && strlen(argc[p]) > 6)
{
h_strlcpy(hsettings.fifofile,argc[p]+6,127);
continue;
}
if(!strncmp(argc[p],"-sep=",5) && strlen(argc[p]) > 5)
{
hsettings.delimiter[0] = argc[p][5];
hsettings.delimiter[1] = '\0';
continue;
}
if(!strncmp(argc[p],"-pidfile=",9) && strlen(argc[p]) > 9)
{
h_strlcpy(hsettings.pidfile,argc[p]+9,127);
continue;
}
if(!strncmp(argc[p],"-cert-file=",11) && strlen(argc[p]) > 11)
{
h_strlcpy(hsettings.certfile,argc[p]+11,127);
continue;
}
if(!strncmp(argc[p],"-privatekey-file=",17) && strlen(argc[p]) > 17)
{
h_strlcpy(hsettings.pkeyfile,argc[p]+17,127);
continue;
}
if(!strncmp(argc[p],"-cors-base=",11) && strlen(argc[p]) > 11)
{
h_strlcpy(hsettings.corsbase,argc[p]+11,127);
continue;
}
if(!strncmp(argc[p],"-user=",6) && strlen(argc[p]) > 6)
{
h_strlcpy(hsettings.paramuser,argc[p]+6,63);
hsettings.paramuid = name_to_uid(hsettings.paramuser);
if(hsettings.paramuid == -1)
{
fprintf(stderr,"Error unknown user/Cannot setuid to user: \"%s\"\n",hsettings.paramuser);
exit(1);
}
continue;
}
if(!strncmp(argc[p],"-",1))
{
fprintf(stderr,"Error, unknown switch or incorrect use: \"%s\"\n",argc[p]);
return 1;
}
}
if(strlen(hsettings.match_url) == 0 ||
(strlen(hsettings.fifofile) == 0 && commport == 0) ||
port == 0 )
{
fprintf(stderr,"Error, Neither FIFO file nor communication port is specified!\n\n");
printhelp();
return 0;
}
if(hsettings.logfile[0] != '/' ||
(strlen(hsettings.fifofile) > 0 && hsettings.fifofile[0] != '/') ||
(strlen(hsettings.pidfile) > 0 && hsettings.pidfile[0] != '/'))
{
fprintf(stderr,"WARNING: Use absolute path to specify fifo, log or pid files!\n");
return 0;
}
stats.startDaemon = time(NULL);
toLog(1,"\n=== daemon starting ===\n");
toLog(1,"Pid: %d\n",getpid());
if(hsettings.loglevel > 1)
{
toLog(2,"Parameters:\n");
toLog(2," loglevel: %d\n",hsettings.loglevel);
toLog(2," Match url: %s\n",hsettings.match_url);
toLog(2," TCP Port (SSE): %d\n",port);
if(commport > 0)
toLog(2," TCP Port (Communication): %d\n",commport);
toLog(2," FIFO file: %s\n",strlen(hsettings.fifofile) > 0 ? hsettings.fifofile : "-none-");
toLog(2," Delimiter: %s\n",hsettings.delimiter);
toLog(2," Mode: %s\n",(hsettings.use_ssl?"SSL (https)":"Normal (http)"));
if(hsettings.use_ssl)
{
toLog(2," SSL Cert key: %s\n",hsettings.certfile);
toLog(2," SSL Prvt key: %s\n",hsettings.pkeyfile);
}
toLog(2," Log file: %s\n",hsettings.logfile);
toLog(2," Pid file: %s\n",hsettings.pidfile);
toLog(2," Set daemon user: %s\n",hsettings.paramuser);
printf("Parameters:\n");
printf(" loglevel: %d\n",hsettings.loglevel);
printf(" Match url: %s\n",hsettings.match_url);
printf(" TCP Port (SSE): %d\n",port);
if(commport > 0)
printf(" TCP Port (Communication): %d\n",commport);
printf(" Fifo file: %s\n",strlen(hsettings.fifofile) > 0 ? hsettings.fifofile : "-none-");
printf(" Mode: %s\n",(hsettings.use_ssl?"SSL (https)":"Normal (http)"));
if(hsettings.use_ssl)
{
printf(" SSL Cert key: %s\n",hsettings.certfile);
printf(" SSL Prvt key: %s\n",hsettings.pkeyfile);
}
printf(" Log file: %s\n",hsettings.logfile);
printf(" Pid file: %s\n",hsettings.pidfile);
printf(" Set daemon user: %s\n",hsettings.paramuser);
fflush(stdout);
}
if(!hsettings.nodaemon)
{
if(hsettings.loglevel > 0)
toLog(1,"Started, Entering daemon mode...\n");
if(daemon(0,0) == -1)
{
toLog(0,"Error, daemon() failure, Exiting...\n");
exit(1);
}
toLog(2,"Entered daemon mode.\n");
}
else
{
toLog(2,"\nWARNING: Daemon mode is disabled by -nodaemon switch!\n"
"All messages written to the standard output!\n"
"THE HASSES DOES NOT USE THE LOG FILE!\n\n");
}
if(hsettings.paramuid >= 0)
{
if(setuid(hsettings.paramuid) == 0)
{
toLog(2,"SetUid done to uid: %d (%s)\n",
hsettings.paramuid,hsettings.paramuser);
}
else
{
toLog(2,"SetUid done to uid: %d (%s) failed! Exiting...\n",
hsettings.paramuid,hsettings.paramuser);
exit(1);
}
}
if(strlen(hsettings.pidfile) > 0)
{
FILE *pidf = NULL;
if((pidf = fopen(hsettings.pidfile,"w")) != NULL)
{
fprintf(pidf,"%d",getpid());
fclose(pidf);
}
else
toLog(0,"Error, Cannot open pid file!\n");
}
attach_signal_handler();
int fifo = -1;
if(strlen(hsettings.fifofile) > 0)
fifo = create_open_fifo(hsettings.fifofile);
struct epoll_event event;
struct epoll_event *events;
input = (char *)malloc(sizeof(char) * MAX_READ_SIZE);
cio_high_read_SET(my_cio_high_read);
cio_low_write_SET(my_cio_low_write);
client_init();
chat_init(&hsettings,&stats);
if(cio_init(hsettings.use_ssl, hsettings.certfile, hsettings.pkeyfile))
{
toLog(0,"Exiting due to previous error...\n");
beforeExit();
exit(1);
}
toLog(2,"Open SSE port to listen...\n");
sfd = create_and_bind(port);
if (sfd == -1)
{
toLog(0,"Exiting due to previous error...\n");
beforeExit();
exit(1);
}
s = make_socket_non_blocking(sfd);
if(s == -1)
{
toLog(0,"Exiting due to previous error...\n");
beforeExit();
exit(1);
}
s = listen (sfd, SOMAXCONN);
if(s == -1)
{
toLog(0,"Error, listen() failure. Exiting...\n");
beforeExit();
exit(1);
}
if(commport > 0)
{
toLog(2,"Open communication port to listen...\n");
commfd = create_and_bind(commport);
if (commfd == -1)
{
toLog(0,"Exiting due to previous error...\n");
beforeExit();
exit(1);
}
s = make_socket_non_blocking(commfd);
if(s == -1)
{
toLog(0,"Exiting due to previous error...\n");
beforeExit();
exit(1);
}
s = listen (commfd, SOMAXCONN);
if(s == -1)
{
toLog(0,"Error, listen() failure. Exiting...\n");
beforeExit();
exit(1);
}
}
toLog(2,"Creating epoll...\n");
epoll_descriptor = epoll_create1(0);
if (epoll_descriptor == -1)
{
toLog(0,"Error, epoll_create1() failure, Exiting...\n");
beforeExit();
exit(1);
}
if(fifo >= 0)
{
event.data.fd = fifo;
event.events = EPOLLIN | EPOLLET;
s = epoll_ctl(epoll_descriptor, EPOLL_CTL_ADD, fifo, &event);
if(s == -1)
{
toLog(0,"Error, epoll_ctl() add fifo failure (1) Exiting...\n");
beforeExit();
exit(1);
}
}
event.data.fd = sfd;
event.events = EPOLLIN | EPOLLET;
s = epoll_ctl(epoll_descriptor, EPOLL_CTL_ADD, sfd, &event);
if(s == -1)
{
toLog(0,"Error, epoll_ctl() add sse socket failure (2) Exiting...\n");
beforeExit();
exit(1);
}
if(commfd >= 0)
{
event.data.fd = commfd;
event.events = EPOLLIN | EPOLLET;
s = epoll_ctl(epoll_descriptor, EPOLL_CTL_ADD, commfd, &event);
if(s == -1)
{
toLog(0,"Error, epoll_ctl() add communication socket failure (3) Exiting...\n");
beforeExit();
exit(1);
}
}
toLog(2,"Epoll created.\n");
/* Buffer where events are returned */
events = calloc (MAXEVENTS, sizeof event);
/* The event loop */
toLog(2,"Starting main event loop...\n");
while(1)
{
int n,i;
checkTimeouts();
n = epoll_wait (epoll_descriptor, events, MAXEVENTS, -1);
for (i = 0; i < n; i++)
{
if ((events[i].events & EPOLLERR) ||
(events[i].events & EPOLLHUP) ||
(!(events[i].events & EPOLLIN)))
{
/* An error has occured on this fd, or the socket is not
ready for reading (why were we notified then?) */
if(commclient_check(events[i].data.fd)) //communication client
{
toLog(2,"Communication client HUP/ERR or shutdown, Closing...\n");
close_communication_client(events[i].data.fd);
}
else //sse client
{
toLog(1, "SSE client HUP/ERR or shutdown, Closing...\n");
close_client(events[i].data.fd);
}
continue;
}
else if (sfd == events[i].data.fd)
{
/* We have a notification on the listening socket, which
means one or more incoming connections. */
while (1)
{
struct sockaddr in_addr;
socklen_t in_len;
int infd;
char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
in_len = sizeof(in_addr);
infd = accept(sfd, &in_addr, &in_len);
if(infd == -1)
{
if ((errno == EAGAIN) ||
(errno == EWOULDBLOCK))
{
/* We have processed all incoming connections. */
break;
}
else
{
toLog(1, "Error, accept() failure!\n");
break;
}
}
s = getnameinfo (&in_addr, in_len,
hbuf, sizeof hbuf,
sbuf, sizeof sbuf,
NI_NUMERICHOST | NI_NUMERICSERV);
if(s == 0)
toLog(1,"Connect from %s on port %s as <%d>\n",hbuf,sbuf,infd);
else
{
toLog(1,"Error in getnameinfo() <%d>\n",infd);
}
/* Make the incoming socket non-blocking and add it to the
list of fds to monitor. */
s = make_socket_non_blocking(infd);
if (s == -1)
{
toLog(1,"Cannot set new accepted socket to non blocking. Closing socket!\n");
close(infd);
break;
}
event.data.fd = infd;
event.events = EPOLLIN | EPOLLET;
s = epoll_ctl(epoll_descriptor, EPOLL_CTL_ADD, infd, &event);
if (s == -1)
{
toLog(0,"Error, epoll_ctl() add failure (3)\n");
beforeExit();
exit(1);
}
//Add to my list
int ccount,sn_r;
client_add(infd);
sn_r = snprintf(client_current()->info,63,"%s:%s",hbuf,sbuf);
if(sn_r < 0)
h_strlcpy(client_current()->info,"truncated",64); //probably never happend that ip and port is greater than 63
client_current()->status = STATUS_NEW;
ccount = client_count();
toLog(2,"Added to the list (%d).\n",ccount);
if(stats.maxclients < ccount)
stats.maxclients = ccount;
}
continue;
}
else if (commfd == events[i].data.fd)
{
/* We have a notification on the communication listening socket, which
means one or more incoming connections for internal communication. */
while (1)
{
struct sockaddr in_addr;
socklen_t in_len;
int infd;
char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
in_len = sizeof(in_addr);
infd = accept(commfd, &in_addr, &in_len);
if(infd == -1)
{
if ((errno == EAGAIN) ||
(errno == EWOULDBLOCK))
{
/* We have processed all incoming connections. */
break;
}
else
{
toLog(1, "Error, accept() failure!\n");
break;
}
}
if(hsettings.loglevel >= 2)
{
s = getnameinfo (&in_addr, in_len,
hbuf, sizeof hbuf,
sbuf, sizeof sbuf,
NI_NUMERICHOST | NI_NUMERICSERV);
if(s == 0)
toLog(2,"Communication connect from %s on port %s as <%d>\n",hbuf,sbuf,infd);
else
{
toLog(1,"Error in getnameinfo() <%d>\n",infd);
}
}
/* Make the incoming socket non-blocking and add it to the
list of fds to monitor. */
s = make_socket_non_blocking(infd);
if (s == -1)
{
toLog(1,"Cannot set new accepted socket to non blocking. Closing socket!\n");
close(infd);
break;
}
event.data.fd = infd;
event.events = EPOLLIN | EPOLLET;
s = epoll_ctl(epoll_descriptor, EPOLL_CTL_ADD, infd, &event);
if (s == -1)
{
toLog(0,"Error, epoll_ctl() add failure (3)\n");
beforeExit();
exit(1);
}
commclient_add(infd);
}
continue;
}
else if (fifo == events[i].data.fd)
{
input[0] = '\0';
char *input_p = input;
while(1)
{
ssize_t count;
count = read(events[i].data.fd, input_p, MAX_READ_SIZE-strlen(input));
if(count == -1)
{
/* If errno == EAGAIN, that means we have read all
data. So go back to the main loop. */
if (errno != EAGAIN)
{
toLog(1,"Error, read() failure (1)\n");
}
break;
}
else if (count == 0)
{
break;
}
input_p[count]='\0';
input_p = input_p + count;
}
chop(input);
toLog(2,"#FIFO received message: \"%s\"\n",input);
parse_comm_messages(input, NON_TCP_SENDER);
}
else
{
/* We have data on the fd waiting to be read. Read and
display it. We must read whatever data is available
completely, as we are running in edge-triggered mode
and won't get a notification again for the same
data. */
int done = 0;
input[0] = '\0';
char *input_p = input;
ssize_t fullcount=0;
ssize_t count;
while(1)
{
count = read(events[i].data.fd,input_p, MAX_READ_SIZE-strlen(input));
if(count == -1)
{
/* If errno == EAGAIN, that means we have read all
data. So go back to the main loop. */
if (errno != EAGAIN)
{
toLog(1,"Error, read() failure (2) closing client...\n");
done = 1;
}
break;
}
else if (count == 0)
{
done = 1;
break;
}
fullcount += count;
input_p = input_p + count;
}
input[fullcount]='\0';
if(commclient_check(events[i].data.fd)) //communication client
{
if(done)
{
toLog(2,"Communication connection closed by peer:\n");
if(strlen(input) > 3)
{
chop(input);
toLog(2,"#COMM-TCP last received message: \"%s\"\n",input);
parse_comm_messages(input, events[i].data.fd);
}
close_communication_client(events[i].data.fd);
}
else
{
chop(input);
toLog(2,"#COMM-TCP received message: \"%s\"\n",input);
parse_comm_messages(input, events[i].data.fd);
}
}
else //sse client
{
if(done)
{
toLog(2,"Connection closed by peer:\n");
close_client(events[i].data.fd);
}
else
{
cio_low_read(client_get(events[i].data.fd),input,fullcount);
}
}
}
}
}
free (events);
close (sfd);
return 0;
}
void commclient_add(int fd)
{
struct CommCli *n;
struct CommCli *ccli = (struct CommCli *)malloc(sizeof(struct CommCli));
ccli->fd = fd;
ccli->next = NULL;
if(commFirst == NULL)
commFirst = ccli;
else
{
for(n = commFirst;n->next != NULL;n = n->next);
n->next = ccli;
}
}