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ethermess
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Don't handle overlong frames like runt frames

This commit is contained in:
Juhani Krekelä 2019-07-04 12:34:13 +03:00
parent b5623511c6
commit 42617ae88a
1 changed files with 13 additions and 10 deletions
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23
ethertype-dump.c
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@ -82,14 +82,6 @@ int main(int argc, char **argv) {
continue;
}
if (frame_length > 1522) {
errno = 0;
if (printf("Overlong frame (%zdB)\n", frame_length) == -1) {
err(1, "printf");
}
continue;
}
// Extract the MACs
// 012345 012345
// dest source
@ -123,11 +115,22 @@ int main(int argc, char **argv) {
errno = 0;
if (ethertype_meaning == NULL) {
if (printf(", length: %zd\n", frame_length) == -1) {
if (printf(", length: %zd", frame_length) == -1) {
err(1, "printf");
}
} else {
if (printf(" (%s), length: %zd\n", ethertype_meaning, frame_length) == -1) {
if (printf(" (%s), length: %zd", ethertype_meaning, frame_length) == -1) {
err(1, "printf");
}
}
errno = 0;
if (frame_length > 1522) {
if (printf(" (overlong)\n") == -1) {
err(1, "printf");
}
} else {
if (printf("\n") == -1) {
err(1, "printf");
}
}