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Prepend a space character if a line begins with a digit

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in the output to the "STAT file" request.

This closes one discrepancy with RFC 959 (page 36.)

See also http://www.kb.cert.org/vuls/id/328867

Obtained from:	OpenBSD
This commit is contained in:
Yaroslav Tykhiy 2003-01-16 14:25:32 +00:00
parent e2a5388194
commit f8a581a0c6
1 changed files with 11 additions and 0 deletions
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11
libexec/ftpd/ftpd.c
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@ -2092,12 +2092,14 @@ void
statfilecmd(char *filename)
{
FILE *fin;
int atstart;
int c;
char line[LINE_MAX];
(void)snprintf(line, sizeof(line), _PATH_LS " -lgA %s", filename);
fin = ftpd_popen(line, "r");
lreply(211, "status of %s:", filename);
atstart = 1;
while ((c = getc(fin)) != EOF) {
if (c == '\n') {
if (ferror(stdout)){
@ -2113,7 +2115,16 @@ statfilecmd(char *filename)
}
(void) putc('\r', stdout);
}
/*
* RFC 959 says neutral text should be prepended before
* a leading 3-digit number followed by whitespace, but
* many ftp clients can be confused by any leading digits,
* as a matter of fact.
*/
if (atstart && isdigit(c))
(void) putc(' ', stdout);
(void) putc(c, stdout);
atstart = (c == '\n');
}
(void) ftpd_pclose(fin);
reply(211, "End of Status");