First attempt at http

This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-07-23 03:49:02 +02:00
parent 440694e3d3
commit 80e722366d
6 changed files with 391 additions and 6 deletions

View file

@ -1609,6 +1609,11 @@ module = {
common = net/tftp.c;
};
module = {
name = http;
common = net/http.c;
};
module = {
name = ofnet;
common = net/drivers/ieee1275/ofnet.c;

356
grub-core/net/http.c Normal file
View file

@ -0,0 +1,356 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2010,2011 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/misc.h>
#include <grub/net/tcp.h>
#include <grub/net/ip.h>
#include <grub/net/ethernet.h>
#include <grub/net/netbuff.h>
#include <grub/net.h>
#include <grub/mm.h>
#include <grub/dl.h>
#include <grub/file.h>
GRUB_MOD_LICENSE ("GPLv3+");
enum
{
HTTP_PORT = 80
};
typedef struct http_data
{
grub_uint64_t file_size;
grub_uint64_t position;
char *current_line;
grub_size_t current_line_len;
int headers_recv;
int first_line_recv;
grub_net_tcp_socket_t sock;
} *http_data_t;
static grub_err_t
parse_line (http_data_t data, char *ptr, grub_size_t len)
{
char *end = ptr + len;
while (end > ptr && *(end - 1) == '\r')
end--;
*end = 0;
if (ptr == end)
{
data->headers_recv = 1;
return GRUB_ERR_NONE;
}
if (!data->first_line_recv)
{
int code;
if (grub_memcmp (ptr, "HTTP/1.1 ", sizeof ("HTTP/1.1 ") - 1) != 0)
return grub_error (GRUB_ERR_NET_INVALID_RESPONSE,
"unsupported HTTP response");
ptr += sizeof ("HTTP/1.1 ") - 1;
code = grub_strtoul (ptr, &ptr, 10);
if (grub_errno)
return grub_errno;
switch (code)
{
case 200:
break;
default:
return grub_error (GRUB_ERR_NET_UNKNOWN_ERROR,
"unsupported HTTP error %d: %s",
code, ptr);
}
data->first_line_recv = 1;
return GRUB_ERR_NONE;
}
if (grub_memcmp (ptr, "Content-Length: ", sizeof ("Content-Length: ") - 1)
== 0)
{
ptr += sizeof ("Content-Length: ") - 1;
data->file_size = grub_strtoull (ptr, &ptr, 10);
return GRUB_ERR_NONE;
}
return GRUB_ERR_NONE;
}
static void
http_err (grub_net_tcp_socket_t sock __attribute__ ((unused)),
void *f)
{
grub_file_t file = f;
http_data_t data = file->data;
if (data->sock)
grub_net_tcp_close (data->sock);
grub_free (data);
if (data->current_line)
grub_free (data->current_line);
file->device->net->eof = 1;
}
static grub_err_t
http_receive (grub_net_tcp_socket_t sock __attribute__ ((unused)),
struct grub_net_buff *nb,
void *f)
{
grub_file_t file = f;
http_data_t data = file->data;
char *ptr = (char *) nb->data;
grub_err_t err;
if (!data->headers_recv && data->current_line)
{
int have_line = 1;
char *t;
ptr = grub_memchr (nb->data, '\n', nb->tail - nb->data);
if (ptr)
ptr++;
else
{
have_line = 0;
ptr = (char *) nb->tail;
}
t = grub_realloc (data->current_line,
data->current_line_len + (ptr - (char *) nb->data));
if (!t)
{
grub_netbuff_free (nb);
grub_net_tcp_close (data->sock);
return grub_errno;
}
data->current_line = t;
grub_memcpy (data->current_line + data->current_line_len,
nb->data, ptr - (char *) nb->data);
data->current_line_len += ptr - (char *) nb->data;
if (!have_line)
{
grub_netbuff_free (nb);
return GRUB_ERR_NONE;
}
err = parse_line (data, data->current_line, data->current_line_len);
grub_free (data->current_line);
data->current_line = 0;
data->current_line_len = 0;
if (err)
{
grub_net_tcp_close (data->sock);
grub_netbuff_free (nb);
return err;
}
}
while (ptr < (char *) nb->tail && !data->headers_recv)
{
char *ptr2;
ptr2 = grub_memchr (ptr, '\n', (char *) nb->tail - ptr);
if (!ptr2)
{
data->current_line = grub_malloc ((char *) nb->tail - ptr);
if (!data->current_line)
{
grub_netbuff_free (nb);
grub_net_tcp_close (data->sock);
return grub_errno;
}
data->current_line_len = (char *) nb->tail - ptr;
grub_memcpy (data->current_line, ptr, data->current_line_len);
grub_netbuff_free (nb);
return GRUB_ERR_NONE;
}
err = parse_line (data, ptr, ptr2 - ptr);
if (err)
{
grub_net_tcp_close (data->sock);
grub_netbuff_free (nb);
return err;
}
ptr = ptr2 + 1;
}
if (((char *) nb->tail - ptr) > 0)
{
data->position += ((char *) nb->tail - ptr);
err = grub_netbuff_pull (nb, ptr - (char *) nb->data);
if (err)
{
grub_net_tcp_close (data->sock);
grub_netbuff_free (nb);
return err;
}
grub_net_put_packet (&file->device->net->packs, nb);
}
else
grub_netbuff_free (nb);
return GRUB_ERR_NONE;
}
static grub_err_t
http_open (struct grub_file *file, const char *filename)
{
struct grub_net_buff *nb;
http_data_t data;
grub_err_t err;
grub_uint8_t *ptr;
int i;
data = grub_zalloc (sizeof (*data));
if (!data)
return grub_errno;
nb = grub_netbuff_alloc (GRUB_NET_TCP_RESERVE_SIZE
+ sizeof ("GET ") - 1
+ grub_strlen (filename)
+ sizeof (" HTTP/1.1\r\nHost: ") - 1
+ grub_strlen (file->device->net->server)
+ sizeof ("\r\nUser-Agent: " PACKAGE_STRING
"\r\n\r\n") - 1);
if (!nb)
{
grub_free (data);
return grub_errno;
}
grub_netbuff_reserve (nb, GRUB_NET_TCP_RESERVE_SIZE);
ptr = nb->tail;
err = grub_netbuff_put (nb, sizeof ("GET ") - 1);
if (err)
{
grub_free (data);
grub_netbuff_free (nb);
return err;
}
grub_memcpy (ptr, "GET ", sizeof ("GET ") - 1);
ptr = nb->tail;
err = grub_netbuff_put (nb, grub_strlen (filename));
if (err)
{
grub_free (data);
grub_netbuff_free (nb);
return err;
}
grub_memcpy (ptr, filename, grub_strlen (filename));
ptr = nb->tail;
err = grub_netbuff_put (nb, sizeof (" HTTP/1.1\r\nHost: ") - 1);
if (err)
{
grub_free (data);
grub_netbuff_free (nb);
return err;
}
grub_memcpy (ptr, " HTTP/1.1\r\nHost: ",
sizeof (" HTTP/1.1\r\nHost: ") - 1);
ptr = nb->tail;
err = grub_netbuff_put (nb, grub_strlen (file->device->net->server));
if (err)
{
grub_free (data);
grub_netbuff_free (nb);
return err;
}
grub_memcpy (ptr, file->device->net->server,
grub_strlen (file->device->net->server));
ptr = nb->tail;
err = grub_netbuff_put (nb,
sizeof ("\r\nUser-Agent: " PACKAGE_STRING "\r\n\r\n")
- 1);
if (err)
{
grub_free (data);
grub_netbuff_free (nb);
return err;
}
grub_memcpy (ptr, "\r\nUser-Agent: " PACKAGE_STRING "\r\n\r\n",
sizeof ("\r\nUser-Agent: " PACKAGE_STRING "\r\n\r\n") - 1);
file->not_easily_seekable = 1;
file->data = data;
data->sock = grub_net_tcp_open (file->device->net->server,
HTTP_PORT, http_receive,
http_err,
file);
if (!data->sock)
{
grub_free (data);
grub_netbuff_free (nb);
return grub_errno;
}
// grub_net_poll_cards (5000);
err = grub_net_send_tcp_packet (data->sock, nb, 1);
if (err)
{
grub_free (data);
grub_net_tcp_close (data->sock);
return err;
}
for (i = 0; !data->headers_recv && i < 100; i++)
{
grub_net_tcp_retransmit ();
grub_net_poll_cards (300);
}
if (!data->headers_recv)
{
grub_net_tcp_close (data->sock);
grub_free (data);
return grub_error (GRUB_ERR_TIMEOUT, "Time out opening http.");
}
file->size = data->file_size;
return GRUB_ERR_NONE;
}
static grub_err_t
http_close (struct grub_file *file)
{
http_data_t data = file->data;
if (data->sock)
grub_net_tcp_close (data->sock);
grub_free (data);
if (data->current_line)
grub_free (data->current_line);
return GRUB_ERR_NONE;
}
static struct grub_net_app_protocol grub_http_protocol =
{
.name = "http",
.open = http_open,
.close = http_close
};
GRUB_MOD_INIT (http)
{
grub_net_app_level_register (&grub_http_protocol);
}
GRUB_MOD_FINI (http)
{
grub_net_app_level_unregister (&grub_http_protocol);
}

View file

@ -25,8 +25,8 @@
#define TCP_SYN_RETRANSMISSION_TIMEOUT 1000
#define TCP_SYN_RETRANSMISSION_COUNT 3
#define TCP_RETRANSMISSION_TIMEOUT 10000
#define TCP_RETRANSMISSION_COUNT 5
#define TCP_RETRANSMISSION_TIMEOUT 1000
#define TCP_RETRANSMISSION_COUNT 10
struct unacked
{
@ -577,6 +577,7 @@ grub_net_send_tcp_packet (const grub_net_tcp_socket_t socket,
struct tcphdr *tcph;
grub_err_t err;
grub_ssize_t fraglen;
COMPILE_TIME_ASSERT (sizeof (struct tcphdr) == GRUB_NET_TCP_HEADER_SIZE);
fraglen = (socket->inf->card->mtu - GRUB_NET_OUR_IPV4_HEADER_SIZE
- sizeof (*tcph));

View file

@ -62,7 +62,9 @@ typedef enum
GRUB_ERR_NET_NO_ANSWER,
GRUB_ERR_WAIT,
GRUB_ERR_BUG,
GRUB_ERR_NET_PORT_CLOSED
GRUB_ERR_NET_PORT_CLOSED,
GRUB_ERR_NET_INVALID_RESPONSE,
GRUB_ERR_NET_UNKNOWN_ERROR
}
grub_err_t;

View file

@ -302,6 +302,20 @@ void EXPORT_FUNC (__deregister_frame_info) (void);
/* Inline functions. */
static inline char *
grub_memchr (const void *p, int c, grub_size_t len)
{
const char *s = p;
const char *e = s + len;
for (; s < e; s++)
if (*s == c)
return (char *) s;
return 0;
}
static inline unsigned int
grub_abs (int x)
{

View file

@ -27,9 +27,16 @@
#include <grub/mm.h>
#include <grub/net/netbuff.h>
#define GRUB_NET_MAX_LINK_HEADER_SIZE 64
#define GRUB_NET_UDP_HEADER_SIZE 8
#define GRUB_NET_OUR_IPV4_HEADER_SIZE 20
enum
{
GRUB_NET_MAX_LINK_HEADER_SIZE = 64,
GRUB_NET_UDP_HEADER_SIZE = 8,
GRUB_NET_TCP_HEADER_SIZE = 20,
GRUB_NET_OUR_IPV4_HEADER_SIZE = 20,
GRUB_NET_TCP_RESERVE_SIZE = GRUB_NET_TCP_HEADER_SIZE
+ GRUB_NET_OUR_IPV4_HEADER_SIZE
+ GRUB_NET_MAX_LINK_HEADER_SIZE
};
typedef enum grub_link_level_protocol_id
{