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#include <assert.h>
#include <errno.h>
#include <fs/devfs.h>
#include <fs/tmpfs.h>
#include <poll.h>
#include <sched/scheduler.h>
#include <socket.h>
// FIXME: Make these more dynamic
OPEN_UNIX_SOCKET *un_sockets[100] = {0};
OPEN_INET_SOCKET *inet_sockets[100] = {0};
OPEN_INET_SOCKET *find_open_udp_port(uint16_t port) {
for (int i = 0; i < 100; i++) {
if (!inet_sockets[i])
continue;
if (inet_sockets[i]->port == port)
return inet_sockets[i];
}
return NULL;
}
int uds_open(const char *path) {
// FIXME: This is super ugly
// Find the socket that path belongs to
SOCKET *s = NULL;
for (int i = 0; i < 100; i++) {
if (!un_sockets[i])
continue;
const char *p = path;
const char *e = p;
for (; *e; e++)
;
for (; e != p && *e != '/'; e--)
;
if (0 == strcmp(e, un_sockets[i]->path)) {
s = un_sockets[i]->s;
break;
}
}
if (!s) {
return -1;
}
// Create a pipe
int fd[2];
dual_pipe(fd);
char c = 'i';
fifo_object_write((uint8_t *)&c, 1, 0, s->fifo_file);
s->ptr_socket_fd->inode->has_data = 1;
s->incoming_fd = get_current_task()->file_descriptors[fd[1]];
// vfs_close(fd[1]);
return fd[0];
}
int accept(int socket, struct sockaddr *address, socklen_t *address_len) {
(void)address;
(void)address_len;
vfs_inode_t *inode = get_current_task()->file_descriptors[socket]->inode;
SOCKET *s = (SOCKET *)inode->internal_object;
if (NULL == s->incoming_fd) {
// Wait until we have gotten a connection
struct pollfd fds[1];
fds[0].fd = socket;
fds[0].events = POLLIN;
fds[0].revents = 0;
poll(fds, 1, 0);
}
int n = 0;
for (; get_current_task()->file_descriptors[n]; n++)
;
get_current_task()->file_descriptors[n] = s->incoming_fd;
get_current_task()->file_descriptors[n]->reference_count++;
s->incoming_fd = NULL;
// for (char c; 0 < vfs_pread(s->fifo_fd, &c, 1, 0);)
// ;
inode->has_data = 0;
// s->ptr_fifo_fd->inode->has_data = 0;
return n;
}
int bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
(void)addrlen;
vfs_fd_t *fd = get_vfs_fd(sockfd);
if (!fd)
return -EBADF;
vfs_inode_t *inode = fd->inode;
if (!inode)
return -EBADF;
SOCKET *s = (SOCKET *)inode->internal_object;
if (AF_UNIX == s->domain) {
struct sockaddr_un *un = (struct sockaddr_un *)addr;
size_t path_len = strlen(un->sun_path);
s->path = kmalloc(path_len + 1);
memcpy(s->path, un->sun_path, path_len);
s->path[path_len] = '\0';
OPEN_UNIX_SOCKET *us;
int i = 0;
for (; i < 100; i++)
if (!un_sockets[i])
break;
us = un_sockets[i] = kmalloc(sizeof(OPEN_UNIX_SOCKET));
us->path = s->path;
us->s = s;
s->child = us;
devfs_add_file(us->path, NULL, NULL, NULL, 1, 1, FS_TYPE_UNIX_SOCKET);
return 0;
}
if (AF_INET == s->domain) {
struct sockaddr_in *in = (struct sockaddr_in *)addr;
assert(in->sin_family == AF_INET); // FIXME: Figure out error value
OPEN_INET_SOCKET *inet;
int i = 0;
for (; i < 100; i++)
if (!inet_sockets[i])
break;
inet = inet_sockets[i] = kmalloc(sizeof(OPEN_INET_SOCKET));
inet->address = in->sin_addr.s_addr;
inet->port = in->sin_port;
inet->s = s;
s->child = inet;
return 0;
}
return 0;
}
int socket_write(uint8_t *buffer, uint64_t offset, uint64_t len, vfs_fd_t *fd) {
SOCKET *s = (SOCKET *)fd->inode->internal_object;
FIFO_FILE *file = s->fifo_file;
int rc = fifo_object_write(buffer, 0, len, file);
fd->inode->has_data = file->has_data;
return rc;
}
int socket_read(uint8_t *buffer, uint64_t offset, uint64_t len, vfs_fd_t *fd) {
SOCKET *s = (SOCKET *)fd->inode->internal_object;
FIFO_FILE *file = s->fifo_file;
int rc = fifo_object_read(buffer, 0, len, file);
fd->inode->has_data = file->has_data;
return rc;
}
void socket_close(vfs_fd_t *fd) { fd->inode->is_open = 0; }
int socket(int domain, int type, int protocol) {
if (!(AF_UNIX == domain || AF_INET == domain))
return -EINVAL;
SOCKET *new_socket = kmalloc_eternal(sizeof(SOCKET));
vfs_inode_t *inode = vfs_create_inode(
0 /*inode_num*/, FS_TYPE_UNIX_SOCKET, 0 /*has_data*/, 1 /*can_write*/,
1 /*is_open*/, new_socket /*internal_object*/, 0 /*file_size*/,
NULL /*open*/, NULL /*create_file*/, socket_read, socket_write,
socket_close, NULL /*create_directory*/, NULL /*get_vm_object*/,
NULL /*truncate*/);
vfs_fd_t *fd;
int n = vfs_create_fd(O_RDWR | O_NONBLOCK, 0, inode, &fd);
new_socket->domain = domain;
new_socket->type = type;
new_socket->protocol = protocol;
new_socket->path = NULL;
new_socket->incoming_fd = NULL;
new_socket->fifo_file = create_fifo_object();
new_socket->ptr_socket_fd = fd;
return n;
}
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