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/* Copyright (c) 2019 Pigeonhole authors, see the included COPYING file */
#include "lib.h"
#include "imap-arg.h"
#include "ext-special-use-common.h"
bool ext_special_use_flag_valid(const char *flag)
{
const char *p = flag;
/* RFC 6154, Section 6:
use-attr = "\All" / "\Archive" / "\Drafts" / "\Flagged" /
"\Junk" / "\Sent" / "\Trash" / use-attr-ext
use-attr-ext = "\" atom
*/
/* "\" */
if (*p != '\\')
return FALSE;
p++;
/* atom */
for (; *p != '\0'; p++) {
if (!IS_ATOM_CHAR(*p))
return FALSE;
}
return TRUE;
}
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