From 5eb3bc6d5594fccfff26329a26225f999e971652 Mon Sep 17 00:00:00 2001 From: "/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org" Date: Mon, 16 Apr 2007 19:08:42 +0000 Subject: first step forward to merge conntrackd and conntrack into the same building chain --- src/local.c | 159 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 159 insertions(+) create mode 100644 src/local.c (limited to 'src/local.c') diff --git a/src/local.c b/src/local.c new file mode 100644 index 0000000..eef70ad --- /dev/null +++ b/src/local.c @@ -0,0 +1,159 @@ +/* + * (C) 2006 by Pablo Neira Ayuso + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Description: UNIX sockets library + */ + +#include +#include +#include +#include +#include "debug.h" + +#include "local.h" + +int local_server_create(struct local_conf *conf) +{ + int fd; + int len; + struct sockaddr_un local; + + if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) { + debug("local_server_create:socket"); + return -1; + } + + if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &conf->reuseaddr, + sizeof(conf->reuseaddr)) == -1) { + debug("local_server_create:setsockopt"); + close(fd); + return -1; + } + + local.sun_family = AF_UNIX; + strcpy(local.sun_path, conf->path); + len = strlen(local.sun_path) + sizeof(local.sun_family); + unlink(conf->path); + + if (bind(fd, (struct sockaddr *) &local, len) == -1) { + debug("local_server_create:bind"); + close(fd); + return -1; + } + + if (listen(fd, conf->backlog) == -1) { + close(fd); + debug("local_server_create:listen"); + return -1; + } + + return fd; +} + +void local_server_destroy(int fd) +{ + close(fd); +} + +int do_local_server_step(int fd, void *data, + void (*process)(int fd, void *data)) +{ + int rfd; + struct sockaddr_un local; + size_t sin_size = sizeof(struct sockaddr_un); + + if ((rfd = accept(fd, (struct sockaddr *)&local, &sin_size)) == -1) { + debug("do_local_server_step:accept"); + return -1; + } + + process(rfd, data); + close(rfd); + + return 0; +} + +int local_client_create(struct local_conf *conf) +{ + int len; + struct sockaddr_un local; + int fd; + + if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) + return -1; + + local.sun_family = AF_UNIX; + strcpy(local.sun_path, conf->path); + len = strlen(local.sun_path) + sizeof(local.sun_family); + + if (connect(fd, (struct sockaddr *) &local, len) == -1) { + close(fd); + debug("local_client_create: connect: "); + return -1; + } + + return fd; +} + +void local_client_destroy(int fd) +{ + close(fd); +} + +int do_local_client_step(int fd, void (*process)(char *buf)) +{ + int numbytes; + char buf[1024]; + + memset(buf, 0, sizeof(buf)); + while ((numbytes = recv(fd, buf, sizeof(buf)-1, 0)) > 0) { + buf[sizeof(buf)-1] = '\0'; + if (process) + process(buf); + memset(buf, 0, sizeof(buf)); + } + + return 0; +} + +void local_step(char *buf) +{ + printf(buf); +} + +int do_local_request(int request, + struct local_conf *conf, + void (*step)(char *buf)) +{ + int fd, ret; + + fd = local_client_create(conf); + if (fd == -1) + return -1; + + ret = send(fd, &request, sizeof(int), 0); + if (ret == -1) { + debug("send:"); + return -1; + } + + do_local_client_step(fd, step); + + local_client_destroy(fd); + + return 0; +} -- cgit v1.2.3