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FTP: handle "rubbish" in front of directory name in 257 responses

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When doing PWD, there's a 257 response which apparently some servers
prefix with a comment before the path instead of after it as is
otherwise the norm.

Failing to parse this, several otherwise legitimate use cases break.

Bug: http://curl.haxx.se/mail/lib-2013-04/0113.html
This commit is contained in:
Bill Middlecamp 2013-04-09 22:18:33 +02:00 committed by Daniel Stenberg
parent 658ec97055
commit e0fb2d86c9
1 changed files with 8 additions and 2 deletions
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10
lib/ftp.c
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@ -2871,13 +2871,19 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
return CURLE_OUT_OF_MEMORY;
/* Reply format is like
257<space>"<directory-name>"<space><commentary> and the RFC959
says
257<space>[rubbish]"<directory-name>"<space><commentary> and the
RFC959 says
The directory name can contain any character; embedded
double-quotes should be escaped by double-quotes (the
"quote-doubling" convention).
*/
/* scan for the first double-quote for non-standard responses */
while(ptr < &data->state.buffer[sizeof(data->state.buffer)]
&& *ptr != '\n' && *ptr != '\0' && *ptr != '"')
ptr++;
if('\"' == *ptr) {
/* it started good */
ptr++;