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slirp: Use strcasecmp() to check tftp mode, tsize 

According to RFC 1350 (TFTP Revision 2) the mode field can contain any
combination of upper and lower case; also RFC 2349 propagates that the
transfer size option ("tsize") is case in-sensitive too.

Current implementation of embedded TFTP server missed that what does
mess some TFTP clients. Fixed by using STRCASECMP(3) in the required
places.

Signed-off-by: Sergei Gavrikov <sergei.gavrikov@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
This commit is contained in:
Sergei Gavrikov 2011-01-12 15:57:18 +02:00 committed by Edgar E. Iglesias
parent 4508d81a78
commit facf1a60f2
1 changed files with 2 additions and 2 deletions
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4
slirp/tftp.c
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@ -311,7 +311,7 @@ static void tftp_handle_rrq(Slirp *slirp, struct tftp_t *tp, int pktlen)
return;
}
if (memcmp(&tp->x.tp_buf[k], "octet\0", 6) != 0) {
if (strcasecmp((const char *)&tp->x.tp_buf[k], "octet") != 0) {
tftp_send_error(spt, 4, "Unsupported transfer mode", tp);
return;
}
@ -351,7 +351,7 @@ static void tftp_handle_rrq(Slirp *slirp, struct tftp_t *tp, int pktlen)
value = (const char *)&tp->x.tp_buf[k];
k += strlen(value) + 1;
if (strcmp(key, "tsize") == 0) {
if (strcasecmp(key, "tsize") == 0) {
int tsize = atoi(value);
struct stat stat_p;