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path: root/Semestr 4/sieci/pracownia2/router/network_addr.c
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Diffstat (limited to 'Semestr 4/sieci/pracownia2/router/network_addr.c')
-rw-r--r--Semestr 4/sieci/pracownia2/router/network_addr.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/Semestr 4/sieci/pracownia2/router/network_addr.c b/Semestr 4/sieci/pracownia2/router/network_addr.c
index a65f48c..d1982c2 100644
--- a/Semestr 4/sieci/pracownia2/router/network_addr.c
+++ b/Semestr 4/sieci/pracownia2/router/network_addr.c
@@ -5,21 +5,31 @@
struct in_addr _get_broadcast_address(struct in_addr addr, uint16_t netmask) {
struct in_addr result = addr;
+ result.s_addr = ntohl(result.s_addr);
/* bitshift by more than 31 is UB */
- if (netmask < 32) {
- result.s_addr |= ~((1<<netmask) - 1);
+ if (netmask == 0) {
+ result.s_addr = -1;
+ }
+ else {
+ result.s_addr |= ((1 << (32 - netmask)) - 1);
}
+ result.s_addr = htonl(result.s_addr);
+
return result;
}
struct in_addr _get_network_address(struct in_addr addr, uint16_t netmask) {
struct in_addr result = addr;
+ result.s_addr = ntohl(result.s_addr);
+
if (netmask == 0) {
- addr.s_addr = 0;
+ result.s_addr = 0;
}
else {
result.s_addr &= ~((1 << (32 - netmask)) - 1);
}
+ result.s_addr = htonl(result.s_addr);
+
return result;
}
@@ -31,13 +41,13 @@ struct in_addr get_network_address(struct network_addr na) {
return _get_network_address(na.addr, na.netmask);
}
-void pretty_print(struct network_addr na) {
+void pretty_print_network(struct network_addr na) {
char ip_addr[20];
inet_ntop(AF_INET, &na.addr, ip_addr, sizeof(ip_addr));
- printf("%s/%d distance %d\n", ip_addr, na.netmask, na.distance);
+ printf("%s/%d\n", ip_addr, na.netmask);
}
-struct network_addr stora(char *str) {
+struct network_addr stona(char *str) {
struct network_addr result;
char addr[20];
size_t ip_preffix = strcspn(str, "/");