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Remove unused utility function

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This commit is contained in:
dmiller 2026-04-22 16:13:09 +00:00
parent dc3d01b783
commit b2a7459609
1 changed files with 0 additions and 48 deletions
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48
tcpip.cc
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@ -1217,54 +1217,6 @@ int readtcppacket(const u8 *packet, int readdata) {
return 0;
}
/* A simple function I wrote to help in debugging, shows the important fields
of a UDP packet*/
int readudppacket(const u8 *packet, int readdata) {
const struct ip *ip = (struct ip *) packet;
const struct udp_hdr *udp = (struct udp_hdr *) (packet + sizeof(struct ip));
const unsigned char *data = packet + sizeof(struct ip) + sizeof(struct udp_hdr);
int tot_len;
struct in_addr bullshit, bullshit2;
char sourcehost[16];
int i;
int realfrag = 0;
if (!packet) {
error("%s: packet is NULL!", __func__);
return -1;
}
bullshit.s_addr = ip->ip_src.s_addr;
bullshit2.s_addr = ip->ip_dst.s_addr;
realfrag = htons(ntohs(ip->ip_off) & IP_OFFMASK);
tot_len = htons(ip->ip_len);
strncpy(sourcehost, inet_ntoa(bullshit), 16);
i = 4 * (ntohs(ip->ip_hl)) + 8;
if (ip->ip_p == IPPROTO_UDP) {
if (realfrag)
log_write(LOG_PLAIN, "Packet is fragmented, offset field: %u\n",
realfrag);
else {
log_write(LOG_PLAIN,
"UDP packet: %s:%d -> %s:%d (total: %d bytes)\n",
sourcehost, ntohs(udp->uh_sport), inet_ntoa(bullshit2),
ntohs(udp->uh_dport), tot_len);
log_write(LOG_PLAIN, "ttl: %hhu ", ip->ip_ttl);
}
}
if (readdata && i < tot_len) {
log_write(LOG_PLAIN, "Data portion:\n");
while (i < tot_len) {
log_write(LOG_PLAIN, "%2X%c", data[i], ((i + 1) % 16) ? ' ' : '\n');
i++;
}
log_write(LOG_PLAIN, "\n");
}
return 0;
}
/* Used by validatepkt() to validate the TCP header (including option lengths).
The options checked are MSS, WScale, SackOK, Sack, and Timestamp. */
static bool validateTCPhdr(const u8 *tcpc, unsigned len) {