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grub2.15810
0002-net-read-bracketed-ipv6-addrs-and-port-num...
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File 0002-net-read-bracketed-ipv6-addrs-and-port-numbers.patch of Package grub2.15810
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
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