From 4be1fd62131f7e186e6f92f1bb5a356dc1ac1951 Mon Sep 17 00:00:00 2001 From: dzwdz Date: Mon, 25 Dec 2023 20:12:44 +0100 Subject: user/libc: reorganize net stuff, basic hosts-only gethostbyname() /usr/share/hosts because i don't have /etc/ yet and i don't feel like creating it. --- src/libc/net/arpainet.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 src/libc/net/arpainet.c (limited to 'src/libc/net/arpainet.c') diff --git a/src/libc/net/arpainet.c b/src/libc/net/arpainet.c new file mode 100644 index 0000000..62efb62 --- /dev/null +++ b/src/libc/net/arpainet.c @@ -0,0 +1,38 @@ +#include +#include + +uint32_t htonl(uint32_t n) { + return ((n & 0xFF000000) >> 24) + | ((n & 0x00FF0000) >> 8) + | ((n & 0x0000FF00) << 8) + | ((n & 0x000000FF) << 24); +} + +uint16_t htons(uint16_t n) { + return (n >> 8) | (n << 8); +} + +uint32_t ntohl(uint32_t n) { + return htonl(n); +} + +uint16_t ntohs(uint16_t n) { + return htons(n); +} + +int inet_aton(const char *s, struct in_addr *dest) { + if (!s) return -1; + + uint32_t ip = strtol(s, (char**)&s, 0); + int parts = 1; + for (; parts < 4; parts++) { + if (!*s) break; + if (*s++ != '.') return 0; + ip <<= 8; + ip += strtol(s, (char**)&s, 0); + } + if (parts > 1) + ip = ((ip & 0xFFFFFF00) << 8 * (4 - parts)) | (ip & 0xFF); + dest->s_addr = htonl(ip); + return 1; +} -- cgit v1.2.3