[autoboot] Avoid using uri_dup() for constructed TFTP URI
uri_dup() chokes on duplicating a URI with a path that does not begin with a slash. Signed-off-by: Michael Brown <mcb30@ipxe.org>
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@ -66,8 +66,9 @@ static struct net_device * find_boot_netdev ( void ) {
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*/
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static struct uri * parse_next_server_and_filename ( struct in_addr next_server,
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const char *filename ) {
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char buf[ 23 /* "tftp://xxx.xxx.xxx.xxx/" */ + strlen ( filename )
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+ 1 /* NUL */ ];
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struct uri *uri;
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struct uri *tmp;
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/* Parse filename */
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uri = parse_uri ( filename );
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@ -81,11 +82,10 @@ static struct uri * parse_next_server_and_filename ( struct in_addr next_server,
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* significant for TFTP.
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*/
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if ( ! uri_is_absolute ( uri ) ) {
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tmp = uri;
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tmp->scheme = "tftp";
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tmp->host = inet_ntoa ( next_server );
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uri = uri_dup ( tmp );
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uri_put ( tmp );
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uri_put ( uri );
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snprintf ( buf, sizeof ( buf ), "tftp://%s/%s",
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inet_ntoa ( next_server ), filename );
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uri = parse_uri ( filename );
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if ( ! uri )
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return NULL;
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}
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