File 0002-net-read-bracketed-ipv6-addrs-and-port-numbers.patch of Package grub2.11605
From 4a00be0176a459fa6e199f2709eabbe8dc0d7979 Mon Sep 17 00:00:00 2001
From: Michael Chang <mchang@suse.com>
Date: Fri, 29 Jul 2016 17:41:38 +0800
Subject: [PATCH 2/8] net: read bracketed ipv6 addrs and port numbers
From: Aaron Miller <aaronmiller@fb.com>
Allow specifying port numbers for http and tftp paths, and allow ipv6 addresses
to be recognized with brackets around them, which is required to specify a port
number
---
grub-core/net/http.c | 21 ++++++++++---
grub-core/net/net.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++---
grub-core/net/tftp.c | 6 +++-
include/grub/net.h | 1 +
4 files changed, 104 insertions(+), 10 deletions(-)
diff --git a/grub-core/net/http.c b/grub-core/net/http.c
index 5aa4ad3..f182d7b 100644
--- a/grub-core/net/http.c
+++ b/grub-core/net/http.c
@@ -312,12 +312,14 @@ http_establish (struct grub_file *file, grub_off_t offset, int initial)
int i;
struct grub_net_buff *nb;
grub_err_t err;
+ char* server = file->device->net->server;
+ int port = file->device->net->port;
nb = grub_netbuff_alloc (GRUB_NET_TCP_RESERVE_SIZE
+ sizeof ("GET ") - 1
+ grub_strlen (data->filename)
+ sizeof (" HTTP/1.1\r\nHost: ") - 1
- + grub_strlen (file->device->net->server)
+ + grub_strlen (server) + sizeof (":XXXXXXXXXX")
+ sizeof ("\r\nUser-Agent: " PACKAGE_STRING
"\r\n") - 1
+ sizeof ("Range: bytes=XXXXXXXXXXXXXXXXXXXX"
@@ -356,7 +358,7 @@ http_establish (struct grub_file *file, grub_off_t offset, int initial)
sizeof (" HTTP/1.1\r\nHost: ") - 1);
ptr = nb->tail;
- err = grub_netbuff_put (nb, grub_strlen (file->device->net->server));
+ err = grub_netbuff_put (nb, grub_strlen (server));
if (err)
{
grub_netbuff_free (nb);
@@ -365,6 +367,15 @@ http_establish (struct grub_file *file, grub_off_t offset, int initial)
grub_memcpy (ptr, file->device->net->server,
grub_strlen (file->device->net->server));
+ if (port)
+ {
+ ptr = nb->tail;
+ grub_snprintf ((char *) ptr,
+ sizeof (":XXXXXXXXXX"),
+ ":%d",
+ port);
+ }
+
ptr = nb->tail;
err = grub_netbuff_put (nb,
sizeof ("\r\nUser-Agent: " PACKAGE_STRING "\r\n")
@@ -390,8 +401,10 @@ http_establish (struct grub_file *file, grub_off_t offset, int initial)
grub_netbuff_put (nb, 2);
grub_memcpy (ptr, "\r\n", 2);
- data->sock = grub_net_tcp_open (file->device->net->server,
- HTTP_PORT, http_receive,
+ grub_dprintf ("http", "opening path %s on host %s TCP port %d\n",
+ data->filename, server, port ? port : HTTP_PORT);
+ data->sock = grub_net_tcp_open (server,
+ port ? port : HTTP_PORT, http_receive,
http_err, http_err,
file);
if (!data->sock)
diff --git a/grub-core/net/net.c b/grub-core/net/net.c
index 10773fc..5cc0d2f 100644
--- a/grub-core/net/net.c
+++ b/grub-core/net/net.c
@@ -437,6 +437,12 @@ parse_ip6 (const char *val, grub_uint64_t *ip, const char **rest)
grub_uint16_t newip[8];
const char *ptr = val;
int word, quaddot = -1;
+ int bracketed = 0;
+
+ if (ptr[0] == '[') {
+ bracketed = 1;
+ ptr++;
+ }
if (ptr[0] == ':' && ptr[1] != ':')
return 0;
@@ -475,6 +481,9 @@ parse_ip6 (const char *val, grub_uint64_t *ip, const char **rest)
grub_memset (&newip[quaddot], 0, (7 - word) * sizeof (newip[0]));
}
grub_memcpy (ip, newip, 16);
+ if (bracketed && *ptr == ']') {
+ ptr++;
+ }
if (rest)
*rest = ptr;
return 1;
@@ -1260,8 +1269,10 @@ grub_net_open_real (const char *name)
{
grub_net_app_level_t proto;
const char *protname, *server;
+ char *host;
grub_size_t protnamelen;
int try;
+ int port = 0;
if (grub_strncmp (name, "pxe:", sizeof ("pxe:") - 1) == 0)
{
@@ -1299,6 +1310,72 @@ grub_net_open_real (const char *name)
return NULL;
}
+ char* port_start;
+ /* ipv6 or port specified? */
+ if ((port_start = grub_strchr (server, ':')))
+ {
+ char* ipv6_begin;
+ if((ipv6_begin = grub_strchr (server, '[')))
+ {
+ char* ipv6_end = grub_strchr (server, ']');
+ if(!ipv6_end)
+ {
+ grub_error (GRUB_ERR_NET_BAD_ADDRESS,
+ N_("mismatched [ in address"));
+ return NULL;
+ }
+ /* port number after bracketed ipv6 addr */
+ if(ipv6_end[1] == ':')
+ {
+ port = grub_strtoul (ipv6_end + 2, NULL, 10);
+ if(port > 65535)
+ {
+ grub_error (GRUB_ERR_NET_BAD_ADDRESS,
+ N_("bad port number"));
+ return NULL;
+ }
+ }
+ host = grub_strndup (ipv6_begin, (ipv6_end - ipv6_begin) + 1);
+ }
+ else
+ {
+ if (grub_strchr (port_start + 1, ':'))
+ {
+ int iplen = grub_strlen (server);
+ /* bracket bare ipv6 addrs */
+ host = grub_malloc (iplen + 3);
+ if(!host)
+ {
+ return NULL;
+ }
+ host[0] = '[';
+ grub_memcpy (host + 1, server, iplen);
+ host[iplen + 1] = ']';
+ host[iplen + 2] = '\0';
+ }
+ else
+ {
+ /* hostname:port or ipv4:port */
+ port = grub_strtol (port_start + 1, NULL, 10);
+ if(port > 65535)
+ {
+ grub_error (GRUB_ERR_NET_BAD_ADDRESS,
+ N_("bad port number"));
+ return NULL;
+ }
+ host = grub_strndup (server, port_start - server);
+ }
+ }
+ }
+ else
+ {
+ host = grub_strdup (server);
+ }
+ if (!host)
+ {
+ return NULL;
+ }
+
for (try = 0; try < 2; try++)
{
FOR_NET_APP_LEVEL (proto)
@@ -1308,14 +1385,13 @@ grub_net_open_real (const char *name)
{
grub_net_t ret = grub_zalloc (sizeof (*ret));
if (!ret)
- return NULL;
- ret->protocol = proto;
- ret->server = grub_strdup (server);
- if (!ret->server)
{
- grub_free (ret);
+ grub_free (host);
return NULL;
}
+ ret->protocol = proto;
+ ret->port = port;
+ ret->server = host;
ret->fs = &grub_net_fs;
return ret;
}
diff --git a/grub-core/net/tftp.c b/grub-core/net/tftp.c
index 7d90bf6..a0817a0 100644
--- a/grub-core/net/tftp.c
+++ b/grub-core/net/tftp.c
@@ -314,6 +314,7 @@ tftp_open (struct grub_file *file, const char *filename)
grub_err_t err;
grub_uint8_t *nbd;
grub_net_network_level_address_t addr;
+ int port = file->device->net->port;
data = grub_zalloc (sizeof (*data));
if (!data)
@@ -382,13 +383,16 @@ tftp_open (struct grub_file *file, const char *filename)
err = grub_net_resolve_address (file->device->net->server, &addr);
if (err)
{
+ grub_dprintf ("tftp", "file_size is %llu, block_size is %llu\n",
+ (unsigned long long)data->file_size,
+ (unsigned long long)data->block_size);
destroy_pq (data);
grub_free (data);
return err;
}
data->sock = grub_net_udp_open (addr,
- TFTP_SERVER_PORT, tftp_receive,
+ port ? port : TFTP_SERVER_PORT, tftp_receive,
file);
if (!data->sock)
{
diff --git a/include/grub/net.h b/include/grub/net.h
index 2192fa1..ccc169c 100644
--- a/include/grub/net.h
+++ b/include/grub/net.h
@@ -270,6 +270,7 @@ typedef struct grub_net
{
char *server;
char *name;
+ int port;
grub_net_app_level_t protocol;
grub_net_packets_t packs;
grub_off_t offset;
--
2.6.6
