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author | Sander Vrijders <sander.vrijders@intec.ugent.be> | 2016-08-03 13:25:12 +0200 |
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committer | Sander Vrijders <sander.vrijders@intec.ugent.be> | 2016-08-03 13:25:12 +0200 |
commit | 44b55f0b03ffc6aff4f1c290b5687d5ac95ddbf9 (patch) | |
tree | 6e80ca15368a75908ba4053ceb07c25269ae786c /src/tools/oping/oping_server.c | |
parent | d409fd569683d8f0e8c8f65d4820087dbf7c0786 (diff) | |
parent | ca494922f3815077efbcd28da3748df38c8a6961 (diff) | |
download | ouroboros-44b55f0b03ffc6aff4f1c290b5687d5ac95ddbf9.tar.gz ouroboros-44b55f0b03ffc6aff4f1c290b5687d5ac95ddbf9.zip |
Merged in dstaesse/ouroboros/be-select (pull request #184)
select() like call
Diffstat (limited to 'src/tools/oping/oping_server.c')
-rw-r--r-- | src/tools/oping/oping_server.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/tools/oping/oping_server.c b/src/tools/oping/oping_server.c new file mode 100644 index 00000000..eb0b511b --- /dev/null +++ b/src/tools/oping/oping_server.c @@ -0,0 +1,162 @@ +/* + * Ouroboros - Copyright (C) 2016 + * + * Ouroboros ping application + * + * Dimitri Staessens <dimitri.staessens@intec.ugent.be> + * Sander Vrijders <sander.vrijders@intec.ugent.be> + * + * 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. + */ + +#include <ouroboros/dev.h> + +#ifdef __FreeBSD__ +#define __XSI_VISIBLE 500 +#endif + +#include <stdlib.h> +#include <signal.h> +#include <arpa/inet.h> + +void shutdown_server(int signo, siginfo_t * info, void * c) +{ + switch(signo) { + case SIGINT: + case SIGTERM: + case SIGHUP: + pthread_cancel(server.server_pt); + pthread_cancel(server.accept_pt); + pthread_cancel(server.cleaner_pt); + default: + return; + } +} + +void * cleaner_thread(void * o) +{ + int i = 0; + struct timespec now = {0, 0}; + int deadline_ms = 10000; + + while (true) { + clock_gettime(CLOCK_REALTIME, &now); + pthread_mutex_lock(&server.lock); + for (i = 0; i < OPING_MAX_FLOWS; ++i) + if (ts_diff_ms(&server.times[i], &now) > deadline_ms) + flow_dealloc(i); + + pthread_mutex_unlock(&server.lock); + sleep(1); + } +} + +void * server_thread(void *o) +{ + char buf[OPING_BUF_SIZE]; + int msg_len = 0; + struct oping_msg * msg = (struct oping_msg *) buf; + struct timespec now = {0, 0}; + + while (true) { + + int fd = flow_select(NULL); + while (!((msg_len = flow_read(fd, buf, OPING_BUF_SIZE)) < 0)) { + if (msg_len < 0) + continue; + + if (ntohl(msg->type) != ECHO_REQUEST) { + printf("Invalid message received.\n"); + continue; + } + + clock_gettime(CLOCK_REALTIME, &now); + + pthread_mutex_lock(&server.lock); + server.times[fd] = now; + pthread_mutex_unlock(&server.lock); + + msg->type = htonl((uint32_t) ECHO_REPLY); + + if (flow_write(fd, buf, msg_len) < 0) { + printf("Error writing to flow (fd %d).\n", fd); + flow_dealloc(fd); + } + } + } + + return (void *) 0; +} + +void * accept_thread(void * o) +{ + int fd = 0; + struct timespec now = {0, 0}; + + printf("Ouroboros ping server started.\n"); + + while (true) { + fd = flow_accept(NULL); + if (fd < 0) { + printf("Failed to accept flow.\n"); + break; + } + + printf("New flow %d.\n", fd); + + if (flow_alloc_resp(fd, 0)) { + printf("Failed to give an allocate response.\n"); + flow_dealloc(fd); + continue; + } + + clock_gettime(CLOCK_REALTIME, &now); + + pthread_mutex_lock(&server.lock); + server.times[fd] = now; + pthread_mutex_unlock(&server.lock); + + flow_cntl(fd, FLOW_F_SETFL, FLOW_O_NONBLOCK); + } + + return (void *) 0; +} + +int server_main() +{ + struct sigaction sig_act; + + memset(&sig_act, 0, sizeof sig_act); + sig_act.sa_sigaction = &shutdown_server; + sig_act.sa_flags = 0; + + if (sigaction(SIGINT, &sig_act, NULL) || + sigaction(SIGTERM, &sig_act, NULL) || + sigaction(SIGHUP, &sig_act, NULL) || + sigaction(SIGPIPE, &sig_act, NULL)) { + printf("Failed to install sighandler.\n"); + return -1; + } + + pthread_create(&server.cleaner_pt, NULL, cleaner_thread, NULL); + pthread_create(&server.accept_pt, NULL, accept_thread, NULL); + pthread_create(&server.server_pt, NULL, server_thread, NULL); + + pthread_join(server.server_pt, NULL); + pthread_join(server.accept_pt, NULL); + pthread_join(server.cleaner_pt, NULL); + + return 0; +} |