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/* Distributed Checksum Clearinghouse
*
* SMTP reply strings
*
* Copyright (c) 2005 by Rhyolite Software
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE
* BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*
* Rhyolite Software DCC 1.2.74-1.2 $Revision$
*/
#include "cmn_defs.h"
REPLY rej_reply;
REPLY grey_reply;
REPLY temp_reply;
void
parse_reply_arg(const char *arg)
{
if (rej_reply.rcode[0] == '\0') {
parse_reply(&rej_reply, 1,
DCC_XCODE, DCC_RCODE, arg);
} else if (grey_reply.rcode[0] == '\0') {
parse_reply(&grey_reply, 1,
GREY_XCODE, GREY_RCODE, arg);
if (grey_reply.rcode[0] != '4'
|| grey_reply.xcode[0] != '4') {
dcc_error_msg("invalid greylist"
" message: %s", arg);
grey_reply.rcode[0] = '\0';
}
} else {
dcc_error_msg("more than 2 -r settings");
}
}
void
finish_replies(void)
{
parse_reply(&temp_reply, 0,
"4.7.1", "451", "DCC failure");
if (rej_reply.rcode[0] == '\0')
parse_reply(&rej_reply, 1, DCC_XCODE, DCC_RCODE,
"mail %s from %s rejected by DCC");
if (grey_reply.rcode[0] == '\0')
parse_reply(&grey_reply, 1, GREY_XCODE, GREY_RCODE,
"mail %s from %s temporary greylist embargoed");
}
/* Parse a string into RFC 821 and RFC 2034 codes and a pattern to make a
* message, or generate the codes for a string that has a message
* without codes.
* The should be something like "5.7.1 550 spammer go home"
* or "spammer go home".
* The pattern can have as many as two "%s" references to the sendmail
* queue-ID and SMTP client IP address.
*/
void
parse_reply(REPLY *reply, /* to here */
u_char pat_ok,
const char *xcode, /* default value such as "5.7.1" */
const char *rcode, /* default value such as "550" */
const char *str) /* from here */
{
const char *p;
int dot1, dot2, e;
char c, *pat;
int p_cnt;
p = dcc_parse_word(0, reply->xcode, sizeof(reply->xcode), str,
0, 0, 0);
p = dcc_parse_word(0, reply->rcode, sizeof(reply->rcode), p,
0, 0, 0);
if (!p
|| (reply->rcode[0] != '4' && reply->rcode[0] != '5')
|| reply->rcode[0] != reply->xcode[0]
|| strspn(reply->rcode, "0123456789") != 3
|| (dot1 = strspn(reply->xcode, "0123456789")) == 0
|| reply->xcode[dot1] != '.'
|| (dot2 = strspn(&reply->xcode[dot1+1], "0123456789")) == 0
|| reply->xcode[dot1+1+dot2] != '.'
|| (e = strspn(&reply->xcode[dot1+1+dot2+1], "0123456789")) == 0
|| reply->xcode[dot1+1+dot2+1+e] != '\0') {
BUFCPY(reply->xcode, xcode);
BUFCPY(reply->rcode, rcode);
p = str;
}
p += strspn(p, DCC_WHITESPACE);
if (!strchr(p, '%')) {
reply->is_pat = 0;
BUFCPY(reply->pat, p);
} else {
reply->is_pat = 1;
p_cnt = pat_ok ? 0 : 2;
pat = reply->pat;
do {
c = *p++;
if (c == '\0')
break;
*pat++ = c;
if (c == '%') {
if (*p != 's' || ++p_cnt > 2)
*pat++ = '%';
}
} while (pat < LAST(reply->pat)-2);
*pat = '\0';
}
}
void
make_reply(CMN_WORK *cwp, REPLY *reply)
{
const char *clnt;
memcpy(cwp->reply.rcode, reply->rcode, sizeof(cwp->reply.rcode));
memcpy(cwp->reply.xcode, reply->xcode, sizeof(cwp->reply.xcode));
if (!reply->is_pat) {
cwp->reply_ptr = reply->pat;
} else {
clnt = cwp->clnt_str;
if (!strncmp("::ffff:", clnt, 7))
clnt += 7; /* strip IPv6 prefix */
snprintf(cwp->reply_buf, sizeof(cwp->reply_buf),
reply->pat, cwp->id, clnt);
cwp->reply_ptr = cwp->reply_buf;
}
}
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