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gluon-neighbour-info: improve verbosity on wrong cli parameters (#829)

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gluon-neighbour-info: improve verbosity on wrong cli parameters
This commit is contained in:
lemoer 2016-07-25 15:52:27 +02:00 committed by Matthias Schiffer
parent 1c42aa0e42
commit 8e8f794c24
1 changed files with 12 additions and 3 deletions
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15
package/gluon-neighbour-info/src/gluon-neighbour-info.c
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@ -38,7 +38,7 @@
void usage() {
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(" -d <ip6> 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(" -r <string> request, e.g. nodeinfo");
puts(" -t <sec> timeout in seconds (default: 3)");
@ -145,7 +145,6 @@ int main(int argc, char **argv) {
}
client_addr.sin6_family = AF_INET6;
client_addr.sin6_addr = in6addr_any;
opterr = 0;
@ -206,7 +205,17 @@ int main(int argc, char **argv) {
}
if (request_string == NULL) {
fprintf(stderr, "No request string supplied");
fprintf(stderr, "No request string supplied\n");
exit(EXIT_FAILURE);
}
if (client_addr.sin6_port == htons(0)) {
fprintf(stderr, "No port supplied\n");
exit(EXIT_FAILURE);
}
if (IN6_IS_ADDR_UNSPECIFIED(&client_addr.sin6_addr)) {
fprintf(stderr, "No destination address supplied\n");
exit(EXIT_FAILURE);
}