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Unverified Commit 7dec8ebf authored by Matthias Schiffer's avatar Matthias Schiffer
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gluon-neighbour-info: fix mixed tab/space indentation

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package/gluon-neighbour-info/src/gluon-neighbour-info.c
+ 199
− 199
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/* /*
Copyright (c) 2014, Nils Schneider <nils@nilsschneider.net> Copyright (c) 2014, Nils Schneider <nils@nilsschneider.net>
All rights reserved. All rights reserved.
Redistribution and use in source and binary forms, with or without Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met: modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, 1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer. this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, 2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution. and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/ */
#include <stdbool.h> #include <stdbool.h>
#include <stdio.h> #include <stdio.h>
...@@ -36,200 +36,200 @@ ...@@ -36,200 +36,200 @@
#include <time.h> #include <time.h>
void usage() { void usage() {
puts("Usage: gluon-neighbour-info [-h] [-s] [-l] [-c <count>] [-t <sec>] -d <dest> -p <port> -i <if0> -r <request>"); puts("Usage: gluon-neighbour-info [-h] [-s] [-l] [-c <count>] [-t <sec>] -d <dest> -p <port> -i <if0> -r <request>");
puts(" -p <int> UDP port"); puts(" -p <int> UDP port");
puts(" -d <ip6> destination address (unicast ip6 or multicast group, e.g. ff02:0:0:0:0:0:2:1001)"); puts(" -d <ip6> destination address (unicast ip6 or multicast group, e.g. ff02:0:0:0:0:0:2:1001)");
puts(" -i <string> interface, e.g. eth0 "); puts(" -i <string> interface, e.g. eth0 ");
puts(" -r <string> request, e.g. nodeinfo"); puts(" -r <string> request, e.g. nodeinfo");
puts(" -t <sec> timeout in seconds (default: 3)"); puts(" -t <sec> timeout in seconds (default: 3)");
puts(" -s <event> output as server-sent events of type <event>"); puts(" -s <event> output as server-sent events of type <event>");
puts(" or without type if <event> is the empty string"); puts(" or without type if <event> is the empty string");
puts(" -c <count> only wait for at most <count> replies"); puts(" -c <count> only wait for at most <count> replies");
puts(" -l after timeout (or <count> replies if -c is given),"); puts(" -l after timeout (or <count> replies if -c is given),");
puts(" send another request and loop forever"); puts(" send another request and loop forever");
puts(" -h this help\n"); puts(" -h this help\n");
} }
void getclock(struct timeval *tv) { void getclock(struct timeval *tv) {
struct timespec ts; struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts); clock_gettime(CLOCK_MONOTONIC, &ts);
tv->tv_sec = ts.tv_sec; tv->tv_sec = ts.tv_sec;
tv->tv_usec = ts.tv_nsec / 1000; tv->tv_usec = ts.tv_nsec / 1000;
} }
/* Assumes a and b are normalized */ /* Assumes a and b are normalized */
void tv_subtract (struct timeval *r, const struct timeval *a, const struct timeval *b) { void tv_subtract (struct timeval *r, const struct timeval *a, const struct timeval *b) {
r->tv_usec = a->tv_usec - b->tv_usec; r->tv_usec = a->tv_usec - b->tv_usec;
r->tv_sec = a->tv_sec - b->tv_sec; r->tv_sec = a->tv_sec - b->tv_sec;
if (r->tv_usec < 0) { if (r->tv_usec < 0) {
r->tv_usec += 1000000; r->tv_usec += 1000000;
r->tv_sec -= 1; r->tv_sec -= 1;
} }
} }
ssize_t recvtimeout(int socket, void *buffer, size_t length, int flags, const struct timeval *timeout) { ssize_t recvtimeout(int socket, void *buffer, size_t length, int flags, const struct timeval *timeout) {
struct timeval now, timeout_left; struct timeval now, timeout_left;
getclock(&now); getclock(&now);
tv_subtract(&timeout_left, timeout, &now); tv_subtract(&timeout_left, timeout, &now);
if (timeout_left.tv_sec < 0) if (timeout_left.tv_sec < 0)
return -1; return -1;
setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, &timeout_left, sizeof(timeout_left)); setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, &timeout_left, sizeof(timeout_left));
return recv(socket, buffer, length, flags); return recv(socket, buffer, length, flags);
} }
int request(const int sock, const struct sockaddr_in6 *client_addr, const char *request, const char *sse, double timeout, unsigned int max_count) { int request(const int sock, const struct sockaddr_in6 *client_addr, const char *request, const char *sse, double timeout, unsigned int max_count) {
ssize_t ret; ssize_t ret;
char buffer[8192]; char buffer[8192];
unsigned int count = 0; unsigned int count = 0;
ret = sendto(sock, request, strlen(request), 0, (struct sockaddr *)client_addr, sizeof(struct sockaddr_in6)); ret = sendto(sock, request, strlen(request), 0, (struct sockaddr *)client_addr, sizeof(struct sockaddr_in6));
if (ret < 0) { if (ret < 0) {
perror("Error in sendto()"); perror("Error in sendto()");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
struct timeval tv_timeout; struct timeval tv_timeout;
getclock(&tv_timeout); getclock(&tv_timeout);
tv_timeout.tv_sec += (int) timeout; tv_timeout.tv_sec += (int) timeout;
tv_timeout.tv_usec += ((int) (timeout * 1000000)) % 1000000; tv_timeout.tv_usec += ((int) (timeout * 1000000)) % 1000000;
if (tv_timeout.tv_usec >= 1000000) { if (tv_timeout.tv_usec >= 1000000) {
tv_timeout.tv_usec -= 1000000; tv_timeout.tv_usec -= 1000000;
tv_timeout.tv_sec += 1; tv_timeout.tv_sec += 1;
} }
do { do {
ret = recvtimeout(sock, buffer, sizeof(buffer), 0, &tv_timeout); ret = recvtimeout(sock, buffer, sizeof(buffer), 0, &tv_timeout);
if (ret < 0) if (ret < 0)
break; break;
if (sse) { if (sse) {
if (sse[0] != '\0') if (sse[0] != '\0')
fprintf(stdout, "event: %s\n", sse); fprintf(stdout, "event: %s\n", sse);
fputs("data: ", stdout); fputs("data: ", stdout);
} }
fwrite(buffer, sizeof(char), ret, stdout); fwrite(buffer, sizeof(char), ret, stdout);
if (sse) if (sse)
fputs("\n\n", stdout); fputs("\n\n", stdout);
else else
fputs("\n", stdout); fputs("\n", stdout);
fflush(stdout); fflush(stdout);
count++; count++;
} while (max_count == 0 || count < max_count); } while (max_count == 0 || count < max_count);
if ((max_count == 0 && count == 0) || count < max_count) if ((max_count == 0 && count == 0) || count < max_count)
return EXIT_FAILURE; return EXIT_FAILURE;
else else
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }
int main(int argc, char **argv) { int main(int argc, char **argv) {
int sock; int sock;
struct sockaddr_in6 client_addr = {}; struct sockaddr_in6 client_addr = {};
char *request_string = NULL; char *request_string = NULL;
sock = socket(PF_INET6, SOCK_DGRAM, 0); sock = socket(PF_INET6, SOCK_DGRAM, 0);
if (sock < 0) { if (sock < 0) {
perror("creating socket"); perror("creating socket");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
client_addr.sin6_family = AF_INET6; client_addr.sin6_family = AF_INET6;
opterr = 0; opterr = 0;
int max_count = 0; int max_count = 0;
double timeout = 3.0; double timeout = 3.0;
char *sse = NULL; char *sse = NULL;
bool loop = false; bool loop = false;
int ret = false; int ret = false;
int c; int c;
while ((c = getopt(argc, argv, "p:d:r:i:t:s:c:lh")) != -1) while ((c = getopt(argc, argv, "p:d:r:i:t:s:c:lh")) != -1)
switch (c) { switch (c) {
case 'p': case 'p':
client_addr.sin6_port = htons(atoi(optarg)); client_addr.sin6_port = htons(atoi(optarg));
break; break;
case 'd': case 'd':
if (!inet_pton(AF_INET6, optarg, &client_addr.sin6_addr)) { if (!inet_pton(AF_INET6, optarg, &client_addr.sin6_addr)) {
fprintf(stderr, "Invalid destination address\n"); fprintf(stderr, "Invalid destination address\n");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
break; break;
case 'i': case 'i':
client_addr.sin6_scope_id = if_nametoindex(optarg); client_addr.sin6_scope_id = if_nametoindex(optarg);
if (client_addr.sin6_scope_id == 0) { if (client_addr.sin6_scope_id == 0) {
perror("Can not use interface"); perror("Can not use interface");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
break; break;
case 'r': case 'r':
request_string = optarg; request_string = optarg;
break; break;
case 't': case 't':
timeout = atof(optarg); timeout = atof(optarg);
if (timeout < 0) { if (timeout < 0) {
perror("Negative timeout not supported"); perror("Negative timeout not supported");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
break; break;
case 's': case 's':
sse = optarg; sse = optarg;
break; break;
case 'l': case 'l':
loop = true; loop = true;
break; break;
case 'c': case 'c':
max_count = atoi(optarg); max_count = atoi(optarg);
if (max_count < 0) { if (max_count < 0) {
perror("Negative count not supported"); perror("Negative count not supported");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
break; break;
case 'h': case 'h':
usage(); usage();
exit(EXIT_SUCCESS); exit(EXIT_SUCCESS);
break; break;
default: default:
fprintf(stderr, "Invalid parameter %c ignored.\n", c); fprintf(stderr, "Invalid parameter %c ignored.\n", c);
} }
if (request_string == NULL) { if (request_string == NULL) {
fprintf(stderr, "No request string supplied\n"); fprintf(stderr, "No request string supplied\n");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
if (client_addr.sin6_port == htons(0)) { if (client_addr.sin6_port == htons(0)) {
fprintf(stderr, "No port supplied\n"); fprintf(stderr, "No port supplied\n");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
if (IN6_IS_ADDR_UNSPECIFIED(&client_addr.sin6_addr)) { if (IN6_IS_ADDR_UNSPECIFIED(&client_addr.sin6_addr)) {
fprintf(stderr, "No destination address supplied\n"); fprintf(stderr, "No destination address supplied\n");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
if (sse) { if (sse) {
fputs("Content-Type: text/event-stream\n\n", stdout); fputs("Content-Type: text/event-stream\n\n", stdout);
fflush(stdout); fflush(stdout);
} }
do { do {
ret = request(sock, &client_addr, request_string, sse, timeout, max_count); ret = request(sock, &client_addr, request_string, sse, timeout, max_count);
} while(loop); } while(loop);
if (sse) if (sse)
fputs("event: eot\ndata: null\n\n", stdout); fputs("event: eot\ndata: null\n\n", stdout);
return ret; return ret;
} }
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