Blenderwizard/ft_ping
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fixed ip addr output

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This commit is contained in:
Jolan Rathelot
2025-05-19 14:19:17 +02:00
parent 02be5f8ac1
commit 5f4180862d
1 changed files with 10 additions and 5 deletions
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15
srcs/main.c
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@ -162,7 +162,7 @@ double nsqrt(double a, double prec) {
return c; return c;
} }
void print_ip_hdr(struct ip* ip_header, char * ipsrc, char *ipdst) { void print_ip_hdr(struct ip* ip_header, char* ipsrc, char* ipdst) {
printf("IP Hdr dump:\n "); printf("IP Hdr dump:\n ");
for (size_t i = 0; i < sizeof(*ip_header); i++) { for (size_t i = 0; i < sizeof(*ip_header); i++) {
printf("%02x", *((unsigned char*)ip_header + i)); printf("%02x", *((unsigned char*)ip_header + i));
@ -317,12 +317,17 @@ int main(int argc, char** argv) {
clock_gettime(CLOCK_MONOTONIC, &recvt); clock_gettime(CLOCK_MONOTONIC, &recvt);
struct ip* ip_header = (struct ip*)buf; struct ip* ip_header = (struct ip*)buf;
struct ip *cp = (struct ip*) ((unsigned char*)ip_header + (ip_header->ip_hl << 2) + sizeof(struct icmphdr)); struct ip* cp =
(struct ip*)((unsigned char*)ip_header + (ip_header->ip_hl << 2) + sizeof(struct icmphdr));
char strip[INET_ADDRSTRLEN] = {0}; char strip[INET_ADDRSTRLEN] = {0};
char strip2[INET_ADDRSTRLEN] = {0}; char strip2[INET_ADDRSTRLEN] = {0};
inet_ntop(AF_INET, &(cp->ip_src.s_addr), strip, INET_ADDRSTRLEN); char strip3[INET_ADDRSTRLEN] = {0};
inet_ntop(AF_INET, &(cp->ip_dst.s_addr), strip2, INET_ADDRSTRLEN); char strip4[INET_ADDRSTRLEN] = {0};
inet_ntop(AF_INET, &(ip_header->ip_src.s_addr), strip, INET_ADDRSTRLEN);
inet_ntop(AF_INET, &(ip_header->ip_dst.s_addr), strip2, INET_ADDRSTRLEN);
inet_ntop(AF_INET, &(cp->ip_src.s_addr), strip3, INET_ADDRSTRLEN);
inet_ntop(AF_INET, &(cp->ip_dst.s_addr), strip4, INET_ADDRSTRLEN);
struct icmphdr* icmp_reply = (struct icmphdr*)(buf + (ip_header->ip_hl << 2)); struct icmphdr* icmp_reply = (struct icmphdr*)(buf + (ip_header->ip_hl << 2));
if (icmp_reply->type != ICMP_ECHOREPLY) { if (icmp_reply->type != ICMP_ECHOREPLY) {
@ -343,7 +348,7 @@ int main(int argc, char** argv) {
printf("%d bytes from %s: %s\n", ntohs(ip_header->ip_len) - (ip_header->ip_hl << 2), strip, str); printf("%d bytes from %s: %s\n", ntohs(ip_header->ip_len) - (ip_header->ip_hl << 2), strip, str);
if (arguments.verbose) { if (arguments.verbose) {
print_ip_hdr(cp, strip, strip2); print_ip_hdr(cp, strip3, strip4);
} }
if (!stop) if (!stop)