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author | Trygve Laugstøl <trygvis@inamo.no> | 2017-04-07 13:27:55 +0200 |
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committer | Trygve Laugstøl <trygvis@inamo.no> | 2017-04-07 13:27:55 +0200 |
commit | bed4c80f31051ec47463caa3e9511374062c6536 (patch) | |
tree | 467481d54a95a5409516ceb53dba7f453170a48e /main.cpp | |
parent | 9eb76adec8d6a6f15a461da7c5e1e6920a92105a (diff) | |
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o Better CMake checks.
o Checking command line arguments.
Diffstat (limited to 'main.cpp')
-rw-r--r-- | main.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
@@ -327,9 +327,15 @@ void got_packet(u_char *args, const struct pcap_pkthdr *header, const u_char *pa } int main(int argc, char *argv[]) { - char *dev = argv[1]; char errbuf[1000]; + if (argc != 2) { + fprintf(stderr, "usage: %s [interface]\n", argv[0]); + return EXIT_FAILURE; + } + + char *dev = argv[1]; + pcap_t *handle; handle = pcap_open_live(dev, BUFSIZ, 1, 1000, errbuf); |