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230 lines
6.8 KiB
230 lines
6.8 KiB
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aaron Miller <aaronmiller@fb.com>
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Date: Fri, 29 Jul 2016 17:41:38 +0800
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Subject: [PATCH] net: read bracketed ipv6 addrs and port numbers
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Allow specifying port numbers for http and tftp paths, and allow ipv6 addresses
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to be recognized with brackets around them, which is required to specify a port
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number
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---
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grub-core/net/http.c | 21 +++++++++++---
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grub-core/net/net.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++
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grub-core/net/tftp.c | 8 ++++--
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include/grub/net.h | 1 +
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4 files changed, 101 insertions(+), 6 deletions(-)
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diff --git a/grub-core/net/http.c b/grub-core/net/http.c
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index 5aa4ad3be..f182d7b87 100644
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--- a/grub-core/net/http.c
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+++ b/grub-core/net/http.c
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@@ -312,12 +312,14 @@ http_establish (struct grub_file *file, grub_off_t offset, int initial)
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int i;
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struct grub_net_buff *nb;
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grub_err_t err;
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+ char* server = file->device->net->server;
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+ int port = file->device->net->port;
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nb = grub_netbuff_alloc (GRUB_NET_TCP_RESERVE_SIZE
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+ sizeof ("GET ") - 1
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+ grub_strlen (data->filename)
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+ sizeof (" HTTP/1.1\r\nHost: ") - 1
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- + grub_strlen (file->device->net->server)
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+ + grub_strlen (server) + sizeof (":XXXXXXXXXX")
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+ sizeof ("\r\nUser-Agent: " PACKAGE_STRING
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"\r\n") - 1
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+ sizeof ("Range: bytes=XXXXXXXXXXXXXXXXXXXX"
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@@ -356,7 +358,7 @@ http_establish (struct grub_file *file, grub_off_t offset, int initial)
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sizeof (" HTTP/1.1\r\nHost: ") - 1);
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ptr = nb->tail;
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- err = grub_netbuff_put (nb, grub_strlen (file->device->net->server));
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+ err = grub_netbuff_put (nb, grub_strlen (server));
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if (err)
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{
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grub_netbuff_free (nb);
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@@ -365,6 +367,15 @@ http_establish (struct grub_file *file, grub_off_t offset, int initial)
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grub_memcpy (ptr, file->device->net->server,
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grub_strlen (file->device->net->server));
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+ if (port)
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+ {
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+ ptr = nb->tail;
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+ grub_snprintf ((char *) ptr,
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+ sizeof (":XXXXXXXXXX"),
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+ ":%d",
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+ port);
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+ }
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+
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ptr = nb->tail;
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err = grub_netbuff_put (nb,
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sizeof ("\r\nUser-Agent: " PACKAGE_STRING "\r\n")
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@@ -390,8 +401,10 @@ http_establish (struct grub_file *file, grub_off_t offset, int initial)
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grub_netbuff_put (nb, 2);
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grub_memcpy (ptr, "\r\n", 2);
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- data->sock = grub_net_tcp_open (file->device->net->server,
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- HTTP_PORT, http_receive,
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+ grub_dprintf ("http", "opening path %s on host %s TCP port %d\n",
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+ data->filename, server, port ? port : HTTP_PORT);
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+ data->sock = grub_net_tcp_open (server,
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+ port ? port : HTTP_PORT, http_receive,
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http_err, http_err,
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file);
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if (!data->sock)
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diff --git a/grub-core/net/net.c b/grub-core/net/net.c
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index 9b8944292..1f887d44b 100644
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--- a/grub-core/net/net.c
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+++ b/grub-core/net/net.c
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@@ -439,6 +439,12 @@ parse_ip6 (const char *val, grub_uint64_t *ip, const char **rest)
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grub_uint16_t newip[8];
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const char *ptr = val;
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int word, quaddot = -1;
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+ int bracketed = 0;
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+
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+ if (ptr[0] == '[') {
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+ bracketed = 1;
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+ ptr++;
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+ }
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if (ptr[0] == ':' && ptr[1] != ':')
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return 0;
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@@ -477,6 +483,9 @@ parse_ip6 (const char *val, grub_uint64_t *ip, const char **rest)
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grub_memset (&newip[quaddot], 0, (7 - word) * sizeof (newip[0]));
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}
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grub_memcpy (ip, newip, 16);
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+ if (bracketed && *ptr == ']') {
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+ ptr++;
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+ }
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if (rest)
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*rest = ptr;
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return 1;
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@@ -1336,8 +1345,10 @@ grub_net_open_real (const char *name)
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{
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grub_net_app_level_t proto;
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const char *protname, *server;
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+ char *host;
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grub_size_t protnamelen;
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int try;
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+ int port = 0;
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if (grub_strncmp (name, "pxe:", sizeof ("pxe:") - 1) == 0)
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{
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@@ -1375,6 +1386,72 @@ grub_net_open_real (const char *name)
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return NULL;
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}
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+ char* port_start;
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+ /* ipv6 or port specified? */
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+ if ((port_start = grub_strchr (server, ':')))
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+ {
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+ char* ipv6_begin;
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+ if((ipv6_begin = grub_strchr (server, '[')))
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+ {
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+ char* ipv6_end = grub_strchr (server, ']');
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+ if(!ipv6_end)
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+ {
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+ grub_error (GRUB_ERR_NET_BAD_ADDRESS,
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+ N_("mismatched [ in address"));
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+ return NULL;
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+ }
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+ /* port number after bracketed ipv6 addr */
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+ if(ipv6_end[1] == ':')
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+ {
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+ port = grub_strtoul (ipv6_end + 2, NULL, 10);
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+ if(port > 65535)
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+ {
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+ grub_error (GRUB_ERR_NET_BAD_ADDRESS,
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+ N_("bad port number"));
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+ return NULL;
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+ }
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+ }
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+ host = grub_strndup (ipv6_begin, (ipv6_end - ipv6_begin) + 1);
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+ }
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+ else
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+ {
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+ if (grub_strchr (port_start + 1, ':'))
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+ {
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+ int iplen = grub_strlen (server);
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+ /* bracket bare ipv6 addrs */
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+ host = grub_malloc (iplen + 3);
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+ if(!host)
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+ {
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+ return NULL;
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+ }
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+ host[0] = '[';
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+ grub_memcpy (host + 1, server, iplen);
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+ host[iplen + 1] = ']';
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+ host[iplen + 2] = '\0';
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+ }
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+ else
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+ {
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+ /* hostname:port or ipv4:port */
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+ port = grub_strtol (port_start + 1, NULL, 10);
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+ if(port > 65535)
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+ {
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+ grub_error (GRUB_ERR_NET_BAD_ADDRESS,
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+ N_("bad port number"));
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+ return NULL;
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+ }
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+ host = grub_strndup (server, port_start - server);
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+ }
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+ }
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+ }
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+ else
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+ {
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+ host = grub_strdup (server);
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+ }
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+ if (!host)
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+ {
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+ return NULL;
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+ }
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+
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for (try = 0; try < 2; try++)
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{
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FOR_NET_APP_LEVEL (proto)
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diff --git a/grub-core/net/tftp.c b/grub-core/net/tftp.c
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index f90071353..e267af354 100644
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--- a/grub-core/net/tftp.c
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+++ b/grub-core/net/tftp.c
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@@ -333,6 +333,7 @@ tftp_open (struct grub_file *file, const char *filename)
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grub_err_t err;
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grub_uint8_t *nbd;
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grub_net_network_level_address_t addr;
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+ int port = file->device->net->port;
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data = grub_zalloc (sizeof (*data));
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if (!data)
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@@ -405,7 +406,10 @@ tftp_open (struct grub_file *file, const char *filename)
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err = grub_net_resolve_address (file->device->net->server, &addr);
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if (err)
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{
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- grub_dprintf("tftp", "Address resolution failed: %d\n", err);
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+ grub_dprintf ("tftp", "Address resolution failed: %d\n", err);
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+ grub_dprintf ("tftp", "file_size is %llu, block_size is %llu\n",
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+ (unsigned long long)data->file_size,
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+ (unsigned long long)data->block_size);
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destroy_pq (data);
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grub_free (data);
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return err;
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@@ -413,7 +417,7 @@ tftp_open (struct grub_file *file, const char *filename)
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grub_dprintf("tftp", "opening connection\n");
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data->sock = grub_net_udp_open (addr,
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- TFTP_SERVER_PORT, tftp_receive,
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+ port ? port : TFTP_SERVER_PORT, tftp_receive,
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file);
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if (!data->sock)
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{
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diff --git a/include/grub/net.h b/include/grub/net.h
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index e9ebc6a1b..f4cd86e58 100644
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--- a/include/grub/net.h
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+++ b/include/grub/net.h
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@@ -273,6 +273,7 @@ typedef struct grub_net
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{
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char *server;
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char *name;
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+ int port;
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grub_net_app_level_t protocol;
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grub_net_packets_t packs;
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grub_off_t offset;
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