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Make rfc2090 multicast option optional

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This commit is contained in:
Michael Brown 2005-06-01 19:10:25 +00:00
parent 55771a462d
commit fa17bf0917
2 changed files with 17 additions and 12 deletions
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2
src/include/tftpcore.h
View File

@ -13,7 +13,7 @@
#include "tftp.h"
extern int tftp_open ( struct tftp_state *state, const char *filename,
union tftp_any **reply );
union tftp_any **reply, int multicast );
extern int tftp_process_opts ( struct tftp_state *state,
struct tftp_oack *oack );

27
src/proto/tftpcore.c
View File

@ -125,6 +125,7 @@ int tftp_get ( struct tftp_state *state, long timeout,
* @v tftp_state::client::sin_port Client UDP port, or 0
* @v tftp_state::blksize Requested blksize, or 0
* @v filename File name
* @v multicast Enable/disable rfc2090 multicast TFTP
* @ret True Received a non-error response
* @ret False Received error response / no response
* @ret tftp_state::server::sin_port TFTP server UDP port
@ -182,9 +183,10 @@ int tftp_get ( struct tftp_state *state, long timeout,
* the server's response originated. This may or may not be the port
* to which the open request was sent.
*
* The options "blksize", "tsize" and "multicast" will always be
* appended to a TFTP open request. Servers that do not understand
* any of these options should simply ignore them.
* The options "blksize" and "tsize" will always be appended to a TFTP
* open request. The option "multicast" will be appended to the
* request if #multicast is True. Servers that do not understand any
* of these options should simply ignore them.
*
* tftp_open() will not automatically join or leave multicast groups;
* the caller is responsible for calling join_group() and
@ -194,10 +196,11 @@ int tftp_get ( struct tftp_state *state, long timeout,
* will return False and #errno will be set accordingly.
*/
int tftp_open ( struct tftp_state *state, const char *filename,
union tftp_any **reply ) {
union tftp_any **reply, int multicast ) {
static unsigned short lport = 2000; /* local port */
int fixed_lport;
struct tftp_rrq rrq;
char *p;
unsigned int rrqlen;
int retry;
@ -217,11 +220,13 @@ int tftp_open ( struct tftp_state *state, const char *filename,
/* Set up RRQ */
rrq.opcode = htons ( TFTP_RRQ );
rrqlen = ( offsetof ( typeof ( rrq ), data ) +
sprintf ( rrq.data,
"%s%coctet%cblksize%c%d%ctsize%c0%cmulticast%c",
filename, 0, 0, 0, state->blksize, 0, 0, 0, 0 )
+ 1 );
p = rrq.data;
p += sprintf ( p, "%s%coctet%cblksize%c%d%ctsize%c0",
filename, 0, 0, 0, state->blksize, 0, 0 ) + 1;
if ( multicast ) {
p += sprintf ( p, "multicast%c", 0 ) + 1;
}
rrqlen = ( p - ( char * ) &rrq );
/* Set negotiated blksize to default value */
state->blksize = TFTP_DEFAULT_BLKSIZE;
@ -257,7 +262,7 @@ int tftp_open ( struct tftp_state *state, const char *filename,
state->server.sin_port );
return 1;
}
if ( reply ) {
if ( *reply ) {
/* We got an error response; abort */
return 0;
}
@ -463,7 +468,7 @@ int tftp_ack ( struct tftp_state *state, union tftp_any **reply ) {
/* We got a non-error response */
return 1;
}
if ( reply ) {
if ( *reply ) {
/* We got an error response */
return 0;
}