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Code Issues Releases Wiki Activity

Started fixing endianess issues.

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This commit is contained in:
Matias Fontanini
2012-08-15 12:04:13 -03:00
parent 68ab7b094a
commit 892bc0ecd3
18 changed files with 301 additions and 142 deletions
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8
src/utils.cpp
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@@ -201,12 +201,14 @@ uint32_t Tins::Utils::do_checksum(const uint8_t *start, const uint8_t *end) {
return checksum + padding;
}
uint32_t Tins::Utils::pseudoheader_checksum(uint32_t source_ip, uint32_t dest_ip, uint32_t len, uint32_t flag) {
uint32_t Tins::Utils::pseudoheader_checksum(IPv4Address source_ip, IPv4Address dest_ip, uint32_t len, uint32_t flag) {
uint32_t checksum(0);
uint16_t *ptr = (uint16_t*)&source_ip;
uint32_t source_ip_int = Utils::to_be<uint32_t>(source_ip),
dest_ip_int = Utils::to_be<uint32_t>(dest_ip);
uint16_t *ptr = (uint16_t*)&source_ip_int;
checksum += (uint32_t)(*ptr) + (uint32_t)(*(ptr+1));
ptr = (uint16_t*)&dest_ip;
ptr = (uint16_t*)&dest_ip_int;
checksum += (uint32_t)(*ptr) + (uint32_t)(*(ptr+1));
checksum += flag + len;
return checksum;