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Be more careful about freeing memory after parsing commands.

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Hiroyuki YAMAMORI gave a patch for the EPRT command in the
PR below. Problems with the rest of the patch are my fault.

PR:		33268
Reviewed by:	iedowse, sheldonh
This commit is contained in:
David Malone 2002-01-05 20:13:01 +00:00
parent bcac684164
commit c507cedecf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=88935
1 changed files with 19 additions and 7 deletions
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26
libexec/ftpd/ftpcmd.y
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@ -102,7 +102,7 @@ static int cmd_type;
static int cmd_form;
static int cmd_bytesz;
char cbuf[512];
char *fromname;
char *fromname = (char *) 0;
extern int epsvall;
@ -151,6 +151,8 @@ cmd_list
: /* empty */
| cmd_list cmd
{
if (fromname)
free(fromname);
fromname = (char *) 0;
restart_point = (off_t) 0;
}
@ -313,7 +315,8 @@ cmd
if (port_check_v6("EPRT") == 1)
goto eprt_done;
#endif
eprt_done:;
eprt_done:
free($4);
}
| PASV check_login CRLF
{
@ -559,6 +562,7 @@ cmd
help(sitetab, (char *) 0);
} else
help(cmdtab, $3);
free($3);
}
| NOOP CRLF
{
@ -595,6 +599,7 @@ cmd
| SITE SP HELP SP STRING CRLF
{
help(sitetab, $5);
free($5);
}
| SITE SP MDFIVE check_login SP pathname CRLF
{
@ -607,6 +612,8 @@ cmd
else
perror_reply(550, $6);
}
if ($6)
free($6);
}
| SITE SP UMASK check_login CRLF
{
@ -751,19 +758,24 @@ cmd
rcmd
: RNFR check_login_ro SP pathname CRLF
{
char *renamefrom();
restart_point = (off_t) 0;
if ($2 && $4) {
fromname = renamefrom($4);
if (fromname == (char *) 0 && $4) {
if (fromname)
free(fromname);
fromname = (char *) 0;
if (renamefrom($4))
fromname = $4;
else
free($4);
}
} else if ($4) {
free($4);
}
}
| REST check_login SP byte_size CRLF
{
if ($2) {
if (fromname)
free(fromname);
fromname = (char *) 0;
restart_point = $4; /* XXX $4 is only "int" */
reply(350, "Restarting at %qd. %s",