Mercurial > hg > nginx-quic
diff src/mail/ngx_mail_imap_handler.c @ 8462:ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Previously, s->backslash was set if any of the arguments was a quoted
string with a backslash character. After successful command parsing
this resulted in all arguments being filtered to remove backslashes.
This is, however, incorrect, as backslashes should not be removed from
IMAP literals. For example:
S: * OK IMAP4 ready
C: a01 login {9}
S: + OK
C: user\name "pass\"word"
S: * BAD internal server error
resulted in "Auth-User: username" instead of "Auth-User: user\name"
as it should.
Fix is to apply backslash filtering on per-argument basis during parsing.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Wed, 19 May 2021 03:13:23 +0300 |
| parents | da0a85e91587 |
| children | b38728495e1a |
line wrap: on
line diff
--- a/src/mail/ngx_mail_imap_handler.c +++ b/src/mail/ngx_mail_imap_handler.c @@ -101,10 +101,9 @@ ngx_mail_imap_init_protocol(ngx_event_t void ngx_mail_imap_auth_state(ngx_event_t *rev) { - u_char *p, *dst, *src, *end; - ngx_str_t *arg; + u_char *p; ngx_int_t rc; - ngx_uint_t tag, i; + ngx_uint_t tag; ngx_connection_t *c; ngx_mail_session_t *s; @@ -158,27 +157,6 @@ ngx_mail_imap_auth_state(ngx_event_t *re ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, "imap auth command: %i", s->command); - if (s->backslash) { - - arg = s->args.elts; - - for (i = 0; i < s->args.nelts; i++) { - dst = arg[i].data; - end = dst + arg[i].len; - - for (src = dst; src < end; dst++) { - *dst = *src; - if (*src++ == '\\') { - *dst = *src++; - } - } - - arg[i].len = dst - arg[i].data; - } - - s->backslash = 0; - } - switch (s->mail_state) { case ngx_imap_start: