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testing2

master
Olaf Rempel 15 years ago
parent
commit
a0657aad83
  1. 2
      Makefile
  2. 20
      cachesyncd.c
  3. 5
      cachesyncd.conf
  4. 2
      multicast.c
  5. 94
      selector.c
  6. 2
      selector.h
  7. 8
      testclient.c

2
Makefile

@ -20,6 +20,6 @@ testclient: testclient.o
$(CC) $(CFLAGS) -o $@ -c $<
clean:
rm -rf *.d *.o cachesyncd cachesyncd.log cachesync.sock
rm -rf *.d *.o cachesyncd cachesyncd.log cachesync.sock testclient
-include $(SRC:.c=.d)

20
cachesyncd.c

@ -28,6 +28,8 @@
#include "configfile.h"
#include "logging.h"
#include "selector.h"
#include "multicast.h"
#include "unixsock.h"
#define DEFAULT_CONFIG "cachesyncd.conf"
#define DEFAULT_LOGFILE "cachesyncd.log"
@ -90,9 +92,25 @@ int main(int argc, char *argv[])
daemon(-1, 0);
}
// logfile (absolute filename, dropped privs???)
// (daemon)
// chroot (needs root)
// msockinit (needs root)
// setgid/pid (drop privs)
// usockinit (dropped privs, relative path)
// selector/unlink (dropped privs, relative path)
log_print(LOG_EVERYTIME, "cachesyncd started (pid: %d)", getpid());
selector();
int usock = sock_init();
if (usock < 0)
return -1;
int msock = mcast_init();
if (msock < 0)
return -1;
selector(usock, msock);
return 0;
}

5
cachesyncd.conf

@ -2,9 +2,6 @@
# unpriviliged user
user httpd
# pidfile location
pidfile ./cachesync.pid
# unix domain socket location
socket ./cachesync.sock
@ -13,5 +10,5 @@ mcastdev eth0
mcastgroup 224.0.0.1
mcastport 2000
# smarty cache directory
# smarty cache directory (home-dir)
basedir /var/www/smarty/cache/

2
multicast.c

@ -96,7 +96,7 @@ int mcast_init()
return -1;
}
char loop = 0;
char loop = 1;
if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop))) {
log_print(LOG_WARN, "mcast_init: setsockopt(IP_MULTICAST_LOOP)");
close(sockfd);

94
selector.c

@ -6,13 +6,21 @@
#include <sys/types.h>
#include <sys/socket.h>
#include "list.h"
#include "logging.h"
#include "multicast.h"
#include "unixsock.h"
#define BUF_SIZE 256
void selector()
struct fd_entry {
struct list_head list;
int fd;
};
static LIST_HEAD(fd_list);
void selector(int usock, int msock)
{
fd_set fdsel;
@ -22,80 +30,80 @@ void selector()
return;
}
int usock = sock_init();
if (usock < 0)
return;
int msock = mcast_init();
if (msock < 0)
return;
int usock_con = -1;
while (1) {
struct timeval tv;
struct fd_entry *entry, *entry_safe;
FD_ZERO(&fdsel);
FD_SET(usock, &fdsel);
FD_SET(msock, &fdsel);
if (usock_con != -1)
FD_SET(usock_con, &fdsel);
list_for_each_entry(entry, &fd_list, list) {
FD_SET(entry->fd, &fdsel);
}
tv.tv_sec = 60;
tv.tv_usec = 0;
int ret = select(64, &fdsel, NULL, NULL, &tv);
int ret = select(FD_SETSIZE, &fdsel, NULL, NULL, &tv);
if (ret < 0) {
log_print(LOG_ERROR, "selector: select()");
continue;
} else if (ret == 0) {
mcast_send(msock, "KEEPALIVE", 10);
}
} else if (FD_ISSET(usock, &fdsel)) {
if (usock_con != -1) {
log_print(LOG_INFO, "selector: unix socket overflow");
close(usock_con);
}
usock_con = accept(usock, NULL, NULL);
if (usock_con == -1)
log_print(LOG_ERROR, "selector: accept()");
} else if (usock_con != -1 && FD_ISSET(usock_con, &fdsel)) {
int len = read(usock_con, buf, BUF_SIZE);
if (len > 0)
mcast_send(msock, buf, len);
if (!strncmp(buf, "DELETE ", 7)) {
log_print(LOG_DEBUG, "delete '%s'", buf +7);
// exec unlink
} else {
log_print(LOG_DEBUG, "recv unknown cmd via unix socket: '%s'", buf);
}
close(usock_con);
usock_con = -1;
} else if (FD_ISSET(msock, &fdsel)) {
if (FD_ISSET(msock, &fdsel)) {
int len = read(msock, buf, BUF_SIZE);
if (len <= 0) {
log_print(LOG_ERROR, "selector: multicast sock closed?");
} else if (!strncmp(buf, "KEEPALIVE", 10)) {
// nothing
} else if (!strncmp(buf, "DELETE ", 7)) {
log_print(LOG_DEBUG, "delete '%s'", buf +7);
// exec unlink
// delete_file(buf +7);
} else {
log_print(LOG_DEBUG, "recv unknown cmd via multicast: '%s'", buf);
}
}
}
if (FD_ISSET(usock, &fdsel)) {
int usock_con;
usock_con = accept(usock, NULL, NULL);
if (usock_con != -1) {
entry = malloc(sizeof(struct fd_entry));
if (entry) {
entry->fd = usock_con;
list_add_tail(&entry->list, &fd_list);
} else {
log_print(LOG_ERROR, "selector: out of memory");
close(usock_con);
}
} else {
log_print(LOG_ERROR, "selector: accept()");
}
}
list_for_each_entry_safe(entry, entry_safe, &fd_list, list) {
if (FD_ISSET(entry->fd, &fdsel)) {
int len = read(entry->fd, buf, BUF_SIZE);
if (len <= 0) {
list_del(&entry->list);
close(entry->fd);
free(entry);
} else {
mcast_send(msock, buf, len);
}
}
}
}
msock_close(msock);
sock_close(usock);
}

2
selector.h

@ -1,6 +1,6 @@
#ifndef _SELECTOR_H_
#define _SELECTOR_H_
void selector();
void selector(int usock, int msock);
#endif // _SELECTOR_H_

8
testclient.c

@ -7,6 +7,8 @@
#include <sys/socket.h>
#include <sys/un.h>
#include <time.h>
#define FILENAME "cachesync.sock"
int main(int argc, char *argv[])
@ -32,7 +34,13 @@ int main(int argc, char *argv[])
exit(-1);
}
srandom(time(NULL));
usleep((random() % 100) * 10000);
write(sockfd, argv[1], strlen(argv[1]) +1);
usleep((random() % 100) * 10000);
close(sockfd);
return 0;

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