Add stub network functions - headers need reorg
This commit is contained in:
K. Lange
parent
6bba5dd59e
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6d5d88cf53
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/* vim: ts=4 sw=4 noexpandtab
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* This file is part of ToaruOS and is released under the terms
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* of the NCSA / University of Illinois License - see LICENSE.md
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* Copyright (C) 2016 Kevin Lange
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*
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* nslookup - perform nameserver lookups
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*
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include <sys/socket.h>
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static void ip_ntoa(uint32_t src_addr, char * out) {
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sprintf(out, "%d.%d.%d.%d",
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(unsigned int)((src_addr & 0xFF000000) >> 24),
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(unsigned int)((src_addr & 0xFF0000) >> 16),
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(unsigned int)((src_addr & 0xFF00) >> 8),
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(unsigned int)((src_addr & 0xFF)));
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}
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int main(int argc, char * argv[]) {
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if (argc < 2) return 1;
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struct hostent * host = gethostbyname(argv[1]);
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if (!host) {
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fprintf(stderr, "%s: not found\n", argv[1]);
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return 1;
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}
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char addr[16] = {0};
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ip_ntoa(*(uint32_t *)host->h_addr_list[0], addr);
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fprintf(stderr, "%s: %s\n", host->h_name, addr);
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return 0;
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}
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@ -0,0 +1,108 @@
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#pragma once
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#include <stdint.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define AF_INET 1
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#define AF_UNSPEC 0
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#define SOCK_STREAM 1
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#define SOCK_DGRAM 2
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#define IPPROTO_TCP 6
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#define IPPROTO_UDP 17
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#define SOL_SOCKET 0
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#define SO_KEEPALIVE 1
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struct hostent {
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char *h_name; /* official name of host */
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char **h_aliases; /* alias list */
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int h_addrtype; /* host address type */
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int h_length; /* length of address */
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char **h_addr_list; /* list of addresses */
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};
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struct hostent * gethostbyname(const char * name);
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typedef size_t socklen_t;
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struct sockaddr {
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unsigned short sa_family; // address family, AF_xxx
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char sa_data[14]; // 14 bytes of protocol address
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};
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struct in_addr {
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unsigned long s_addr; // load with inet_pton()
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};
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struct sockaddr_in {
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short sin_family; // e.g. AF_INET, AF_INET6
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unsigned short sin_port; // e.g. htons(3490)
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struct in_addr sin_addr; // see struct in_addr, below
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char sin_zero[8]; // zero this if you want to
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};
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struct addrinfo {
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int ai_flags;
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int ai_family;
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int ai_socktype;
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int ai_protocol;
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socklen_t ai_addrlen;
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struct sockaddr *ai_addr;
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char *ai_canonname;
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struct addrinfo *ai_next;
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};
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struct iovec { /* Scatter/gather array items */
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void *iov_base; /* Starting address */
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size_t iov_len; /* Number of bytes to transfer */
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};
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struct msghdr {
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void *msg_name; /* optional address */
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socklen_t msg_namelen; /* size of address */
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struct iovec *msg_iov; /* scatter/gather array */
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size_t msg_iovlen; /* # elements in msg_iov */
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void *msg_control; /* ancillary data, see below */
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size_t msg_controllen; /* ancillary data buffer len */
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int msg_flags; /* flags on received message */
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};
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typedef uint32_t in_addr_t;
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typedef uint16_t in_port_t;
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ssize_t recv(int sockfd, void *buf, size_t len, int flags);
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ssize_t recvfrom(int sockfd, void *buf, size_t len, int flags, struct sockaddr *src_addr, socklen_t *addrlen);
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ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
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ssize_t send(int sockfd, const void *buf, size_t len, int flags);
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ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *dest_addr, socklen_t addrlen);
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ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
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int socket(int domain, int type, int protocol);
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uint32_t htonl(uint32_t hostlong);
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uint16_t htons(uint16_t hostshort);
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uint32_t ntohl(uint32_t netlong);
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uint16_t ntohs(uint16_t netshort);
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int bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
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int accept(int sockfd, struct sockaddr * addr, socklen_t * addrlen);
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int listen(int sockfd, int backlog);
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int getsockname(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
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int getpeername(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
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int getsockopt(int sockfd, int level, int optname, void *optval, socklen_t *optlen);
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int setsockopt(int sockfd, int level, int optname, const void *optval, socklen_t optlen);
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#ifdef __cplusplus
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}
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#endif
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@ -0,0 +1,126 @@
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/*
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* socket methods (mostly unimplemented)
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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static struct hostent _out_host = {0};
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static struct in_addr * _out_host_vector[2] = {NULL, NULL};
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static struct in_addr * _out_host_aliases[1] = {NULL};
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static uint32_t _out_addr;
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#define UNIMPLEMENTED fprintf(stderr, "[libnetwork] Unimplemented: %s\n", __FUNCTION__)
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struct hostent * gethostbyname(const char * name) {
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if (_out_host.h_name) free(_out_host.h_name);
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_out_host.h_name = strdup(name);
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int fd = open("/dev/net",O_RDONLY);
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void * args[2] = {(void *)name,&_out_addr};
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int ret = ioctl(fd, 0x5000, args);
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close(fd);
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if (ret) return NULL;
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_out_host_vector[0] = (struct in_addr *)&_out_addr;
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_out_host.h_aliases = (char **)&_out_host_aliases;
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_out_host.h_addrtype = AF_INET;
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_out_host.h_addr_list = (char**)_out_host_vector;
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_out_host.h_length = sizeof(uint32_t);
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return &_out_host;
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}
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int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
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UNIMPLEMENTED;
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return -1;
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}
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/* All of these should just be reads. */
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ssize_t recv(int sockfd, void *buf, size_t len, int flags) {
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UNIMPLEMENTED;
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return -1;
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}
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ssize_t recvfrom(int sockfd, void *buf, size_t len, int flags, struct sockaddr *src_addr, socklen_t *addrlen) {
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UNIMPLEMENTED;
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return -1;
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}
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ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags) {
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UNIMPLEMENTED;
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return -1;
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}
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ssize_t send(int sockfd, const void *buf, size_t len, int flags) {
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UNIMPLEMENTED;
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return len;
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}
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ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *dest_addr, socklen_t addrlen) {
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UNIMPLEMENTED;
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return len;
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}
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ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags) {
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UNIMPLEMENTED;
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return -1;
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}
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int socket(int domain, int type, int protocol) {
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UNIMPLEMENTED;
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return -1;
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}
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uint32_t htonl(uint32_t hostlong) {
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return ( (((hostlong) & 0xFF) << 24) | (((hostlong) & 0xFF00) << 8) | (((hostlong) & 0xFF0000) >> 8) | (((hostlong) & 0xFF000000) >> 24));
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}
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uint16_t htons(uint16_t hostshort) {
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return ( (((hostshort) & 0xFF) << 8) | (((hostshort) & 0xFF00) >> 8) );
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}
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uint32_t ntohl(uint32_t netlong) {
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return htonl(netlong);
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}
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uint16_t ntohs(uint16_t netshort) {
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return htons(netshort);
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}
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int bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
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UNIMPLEMENTED;
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return -1;
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}
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int accept(int sockfd, struct sockaddr * addr, socklen_t * addrlen) {
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UNIMPLEMENTED;
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return -1;
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}
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int listen(int sockfd, int backlog) {
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UNIMPLEMENTED;
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return -1;
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}
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int getsockname(int sockfd, struct sockaddr *addr, socklen_t *addrlen) {
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UNIMPLEMENTED;
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return -1;
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}
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int getpeername(int sockfd, struct sockaddr *addr, socklen_t *addrlen) {
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return -1;
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}
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int getsockopt(int sockfd, int level, int optname, void *optval, socklen_t *optlen) {
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UNIMPLEMENTED;
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return -1;
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}
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int setsockopt(int sockfd, int level, int optname, const void *optval, socklen_t optlen) {
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UNIMPLEMENTED;
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return -1;
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}
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