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ftplistparser: add two overflow preventions

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These two conditions probably cannot actually happen, but these two
checks make that certain and should please the static code analyzers.

Pointed out by Coverity

Closes #17397
This commit is contained in:
Daniel Stenberg 2025-05-20 15:46:41 +02:00
parent be45e014c6
commit 155af7ac77
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1 changed files with 2 additions and 2 deletions
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4
lib/ftplistparser.c
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@ -485,7 +485,7 @@ static CURLcode parse_unix(struct Curl_easy *data,
switch(parser->state.UNIX.sub.hlinks) {
case PL_UNIX_HLINKS_PRESPACE:
if(c != ' ') {
if(ISDIGIT(c)) {
if(ISDIGIT(c) && len) {
parser->item_offset = len - 1;
parser->item_length = 1;
parser->state.UNIX.sub.hlinks = PL_UNIX_HLINKS_NUMBER;
@ -850,7 +850,7 @@ static CURLcode parse_winnt(struct Curl_easy *data,
case PL_WINNT_DIRORSIZE:
switch(parser->state.NT.sub.dirorsize) {
case PL_WINNT_DIRORSIZE_PRESPACE:
if(c != ' ') {
if(c != ' ' && len) {
parser->item_offset = len - 1;
parser->item_length = 1;
parser->state.NT.sub.dirorsize = PL_WINNT_DIRORSIZE_CONTENT;