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upstream: Allow escaped quotes \" and \' in ssh_config and

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sshd_config quotes option strings. bz#1596 ok markus@

OpenBSD-Commit-ID: dd3a29fc2dc905e8780198e5a6a30b096de1a1cb
This commit is contained in:
djm@openbsd.org 2018-03-02 03:02:11 +00:00 committed by Damien Miller
parent 94b4e2d29a
commit 713d9cb510
1 changed files with 19 additions and 8 deletions
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27
misc.c
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@ -1,4 +1,4 @@
/* $OpenBSD: misc.c,v 1.123 2018/01/08 15:21:49 markus Exp $ */ /* $OpenBSD: misc.c,v 1.124 2018/03/02 03:02:11 djm Exp $ */
/* /*
* Copyright (c) 2000 Markus Friedl. All rights reserved. * Copyright (c) 2000 Markus Friedl. All rights reserved.
* Copyright (c) 2005,2006 Damien Miller. All rights reserved. * Copyright (c) 2005,2006 Damien Miller. All rights reserved.
@ -242,7 +242,7 @@ set_rdomain(int fd, const char *name)
char * char *
strdelim(char **s) strdelim(char **s)
{ {
char *old; char *old, *cp;
int wspace = 0; int wspace = 0;
if (*s == NULL) if (*s == NULL)
@ -256,13 +256,24 @@ strdelim(char **s)
if (*s[0] == '\"') { if (*s[0] == '\"') {
memmove(*s, *s + 1, strlen(*s)); /* move nul too */ memmove(*s, *s + 1, strlen(*s)); /* move nul too */
/* Find matching quote */ /* Find matching quote */
if ((*s = strpbrk(*s, QUOTE)) == NULL) { for (cp = *s; ; cp++) {
return (NULL); /* no matching quote */ if (*cp == '\0')
} else { return NULL; /* no matching quote */
*s[0] = '\0'; if (*cp == '\\') {
*s += strspn(*s + 1, WHITESPACE) + 1; /* Escape sequence */
return (old); if (cp[1] == '\"' || cp[1] == '\'' ||
cp[1] == '\\') {
memmove(cp, cp + 1, strlen(cp));
continue;
}
return NULL; /* invalid escape */
} else if (*cp == '\"') {
*(cp++) = '\0';
*s += strspn(cp, WHITESPACE);
return old;
}
} }
} }