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telnet: error correctly for WS set to "x[num]"

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Follow-up to e4f93be9d5
Reported-by: Harry Sintonen
Closes #10606
This commit is contained in:
Daniel Stenberg 2023-02-24 18:38:32 +01:00
parent 5ed7417d2f
commit cbd3fd7cbb
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GPG Key ID: 5CC908FDB71E12C2
1 changed files with 2 additions and 2 deletions
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4
lib/telnet.c
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@ -844,10 +844,10 @@ static CURLcode check_telnet_options(struct Curl_easy *data)
char *p;
unsigned long x = strtoul(arg, &p, 10);
unsigned long y = 0;
if(Curl_raw_tolower(*p) == 'x') {
if(x && (x <= 0xffff) && Curl_raw_tolower(*p) == 'x') {
p++;
y = strtoul(p, NULL, 10);
if(x && y && (x <= 0xffff) && (y <= 0xffff)) {
if(y && (y <= 0xffff)) {
tn->subopt_wsx = (unsigned short)x;
tn->subopt_wsy = (unsigned short)y;
tn->us_preferred[CURL_TELOPT_NAWS] = CURL_YES;