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attempt to avoid warnings in picky environments by storing options as

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unsigned chars
This commit is contained in:
Daniel Stenberg 2006-04-07 11:46:16 +00:00
parent b0adcd6a46
commit 34e7daf989
1 changed files with 13 additions and 16 deletions
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29
lib/telnet.c
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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2006, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@ -163,8 +163,8 @@ struct TELNET {
struct curl_slist *telnet_vars; /* Environment variables */
/* suboptions */
char subbuffer[SUBBUFSIZE];
char *subpointer, *subend; /* buffer for sub-options */
unsigned char subbuffer[SUBBUFSIZE];
unsigned char *subpointer, *subend; /* buffer for sub-options */
TelnetReceive telrcv_state;
};
@ -1014,18 +1014,15 @@ void telrcv(struct connectdata *conn,
if (c != CURL_IAC)
{
/*
* This is an error. We only expect to get
* "IAC IAC" or "IAC SE". Several things may
* have happend. An IAC was not doubled, the
* IAC SE was left off, or another option got
* inserted into the suboption are all possibilities.
* If we assume that the IAC was not doubled,
* and really the IAC SE was left off, we could
* get into an infinate loop here. So, instead,
* we terminate the suboption, and process the
* partial suboption if we can.
* This is an error. We only expect to get "IAC IAC" or "IAC SE".
* Several things may have happend. An IAC was not doubled, the
* IAC SE was left off, or another option got inserted into the
* suboption are all possibilities. If we assume that the IAC was
* not doubled, and really the IAC SE was left off, we could get
* into an infinate loop here. So, instead, we terminate the
* suboption, and process the partial suboption if we can.
*/
CURL_SB_ACCUM(tn, (unsigned char)CURL_IAC);
CURL_SB_ACCUM(tn, CURL_IAC);
CURL_SB_ACCUM(tn, c);
tn->subpointer -= 2;
CURL_SB_TERM(tn);
@ -1040,8 +1037,8 @@ void telrcv(struct connectdata *conn,
}
else
{
CURL_SB_ACCUM(tn, (unsigned char)CURL_IAC);
CURL_SB_ACCUM(tn, (unsigned char)CURL_SE);
CURL_SB_ACCUM(tn, CURL_IAC);
CURL_SB_ACCUM(tn, CURL_SE);
tn->subpointer -= 2;
CURL_SB_TERM(tn);
suboption(conn); /* handle sub-option */