static void qmqpd_open_file(QMQPD_STATE *state)
{
int cleanup_flags;
/*
* Connect to the cleanup server. Log client name/address with queue ID.
*/
cleanup_flags = input_transp_cleanup(CLEANUP_FLAG_MASK_EXTERNAL,
qmqpd_input_transp_mask);
state->dest = mail_stream_service(MAIL_CLASS_PUBLIC, var_cleanup_service);
if (state->dest == 0
|| attr_print(state->dest->stream, ATTR_FLAG_NONE,
ATTR_TYPE_INT, MAIL_ATTR_FLAGS, cleanup_flags,
ATTR_TYPE_END) != 0)
msg_fatal("unable to connect to the %s %s service",
MAIL_CLASS_PUBLIC, var_cleanup_service);
state->cleanup = state->dest->stream;
state->queue_id = mystrdup(state->dest->id);
msg_info("%s: client=%s", state->queue_id, state->namaddr);
/*
* Record the time of arrival. Optionally, enable content filtering (not
* bloody likely, but present for the sake of consistency with all other
* Postfix points of entrance).
*/
rec_fprintf(state->cleanup, REC_TYPE_TIME, REC_TYPE_TIME_FORMAT,
REC_TYPE_TIME_ARG(state->arrival_time));
if (*var_filter_xport)
rec_fprintf(state->cleanup, REC_TYPE_FILT, "%s", var_filter_xport);
}
static void post_mail_init(VSTREAM *stream, const char *sender,
const char *recipient,
int filter_class, int trace_flags,
VSTRING *queue_id)
{
VSTRING *id = queue_id ? queue_id : vstring_alloc(100);
struct timeval now;
const char *date;
int cleanup_flags =
int_filt_flags(filter_class) | CLEANUP_FLAG_MASK_INTERNAL;
GETTIMEOFDAY(&now);
date = mail_date(now.tv_sec);
/*
* Negotiate with the cleanup service. Give up if we can't agree.
*/
if (attr_scan(stream, ATTR_FLAG_STRICT,
ATTR_TYPE_STR, MAIL_ATTR_QUEUEID, id,
ATTR_TYPE_END) != 1
|| attr_print(stream, ATTR_FLAG_NONE,
ATTR_TYPE_INT, MAIL_ATTR_FLAGS, cleanup_flags,
ATTR_TYPE_END) != 0)
msg_fatal("unable to contact the %s service", var_cleanup_service);
/*
* Generate a minimal envelope section. The cleanup service will add a
* size record.
*/
rec_fprintf(stream, REC_TYPE_TIME, REC_TYPE_TIME_FORMAT,
REC_TYPE_TIME_ARG(now));
rec_fprintf(stream, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_LOG_ORIGIN, MAIL_ATTR_ORG_LOCAL);
rec_fprintf(stream, REC_TYPE_ATTR, "%s=%d",
MAIL_ATTR_TRACE_FLAGS, trace_flags);
rec_fputs(stream, REC_TYPE_FROM, sender);
rec_fputs(stream, REC_TYPE_RCPT, recipient);
rec_fputs(stream, REC_TYPE_MESG, "");
/*
* Do the Received: and Date: header lines. This allows us to shave a few
* cycles by using the expensive date conversion result for both.
*/
post_mail_fprintf(stream, "Received: by %s (%s)",
var_myhostname, var_mail_name);
post_mail_fprintf(stream, "\tid %s; %s", vstring_str(id), date);
post_mail_fprintf(stream, "Date: %s", date);
if (queue_id == 0)
vstring_free(id);
}
int forward_append(DELIVER_ATTR attr)
{
FORWARD_INFO *info;
HTABLE *table_snd;
/*
* Sanity checks.
*/
if (msg_verbose)
msg_info("forward delivered=%s sender=%s recip=%s",
attr.delivered, attr.sender, attr.rcpt.address);
if (forward_dt == 0)
msg_panic("forward_append: missing forward_init call");
/*
* In order to find the recipient list, first index a table by
* delivered-to header address, then by envelope sender address.
*/
if ((table_snd = (HTABLE *) htable_find(forward_dt, attr.delivered)) == 0) {
table_snd = htable_create(0);
htable_enter(forward_dt, attr.delivered, (void *) table_snd);
}
if ((info = (FORWARD_INFO *) htable_find(table_snd, attr.sender)) == 0) {
if ((info = forward_open(attr.request, attr.sender)) == 0)
return (-1);
htable_enter(table_snd, attr.sender, (void *) info);
}
/*
* Append the recipient to the message envelope. Don't send the original
* recipient or notification mask if it was reset due to mailing list
* expansion.
*/
if (*attr.rcpt.dsn_orcpt)
rec_fprintf(info->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_DSN_ORCPT, attr.rcpt.dsn_orcpt);
if (attr.rcpt.dsn_notify)
rec_fprintf(info->cleanup, REC_TYPE_ATTR, "%s=%d",
MAIL_ATTR_DSN_NOTIFY, attr.rcpt.dsn_notify);
if (*attr.rcpt.orig_addr)
rec_fputs(info->cleanup, REC_TYPE_ORCP, attr.rcpt.orig_addr);
rec_fputs(info->cleanup, REC_TYPE_RCPT, attr.rcpt.address);
return (vstream_ferror(info->cleanup));
}
static void qmqpd_write_attributes(QMQPD_STATE *state)
{
/*
* Logging attributes, also used for XFORWARD.
*/
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_LOG_CLIENT_NAME, state->name);
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_LOG_CLIENT_ADDR, state->rfc_addr);
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_LOG_CLIENT_PORT, state->port);
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_LOG_ORIGIN, state->namaddr);
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_LOG_PROTO_NAME, state->protocol);
/*
* For consistency with the smtpd Milter client, we need to provide the
* real client attributes to the cleanup Milter client. This does not
* matter much with qmqpd which speaks to trusted clients only, but we
* want to be sure that the cleanup input protocol is ready when a new
* type of network daemon is added to receive mail from the Internet.
*
* See also the comments in smtpd.c.
*/
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_ACT_CLIENT_NAME, state->name);
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_ACT_CLIENT_ADDR, state->addr);
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_ACT_CLIENT_PORT, state->port);
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%u",
MAIL_ATTR_ACT_CLIENT_AF, state->addr_family);
rec_fprintf(state->cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_ACT_PROTO_NAME, state->protocol);
/* XXX What about the address rewriting context? */
}
void qmgr_message_update_warn(QMGR_MESSAGE *message)
{
/*
* After the "mail delayed" warning, optionally send a "delay cleared"
* notification.
*/
if (qmgr_message_open(message)
|| vstream_fseek(message->fp, message->warn_offset, SEEK_SET) < 0
|| rec_fprintf(message->fp, REC_TYPE_WARN, REC_TYPE_WARN_FORMAT,
REC_TYPE_WARN_ARG(-1)) < 0
|| vstream_fflush(message->fp))
msg_fatal("update queue file %s: %m", VSTREAM_PATH(message->fp));
qmgr_message_close(message);
}
void qmgr_message_update_warn(QMGR_MESSAGE *message)
{
/*
* XXX eventually this should let us schedule multiple warnings, right
* now it just allows for one.
*/
if (qmgr_message_open(message)
|| vstream_fseek(message->fp, message->warn_offset, SEEK_SET) < 0
|| rec_fprintf(message->fp, REC_TYPE_WARN, REC_TYPE_WARN_FORMAT,
REC_TYPE_WARN_ARG(0)) < 0
|| vstream_fflush(message->fp))
msg_fatal("update queue file %s: %m", VSTREAM_PATH(message->fp));
qmgr_message_close(message);
}
static int smtpd_proxy_save_cmd(SMTPD_STATE *state, int expect, const char *fmt,...)
{
va_list ap;
/*
* Errors first.
*/
if (vstream_ferror(smtpd_proxy_replay_stream)
|| vstream_feof(smtpd_proxy_replay_stream))
return (smtpd_proxy_replay_rdwr_error(state));
/*
* Save the expected reply first, so that the replayer can safely
* overwrite the input buffer with the command.
*/
rec_fprintf(smtpd_proxy_replay_stream, REC_TYPE_RCPT, "%d", expect);
/*
* The command can be omitted at the start of an SMTP session. This is
* not documented as part of the official interface because it is used
* only internally to this module. Use an explicit null string in case
* the SMTPD_PROXY_CONN_FMT implementation details change.
*/
if (fmt == SMTPD_PROXY_CONN_FMT)
fmt = "";
/*
* Save the command to the replay log, and send it to the before-queue
* filter after we have received the entire message.
*/
va_start(ap, fmt);
rec_vfprintf(smtpd_proxy_replay_stream, REC_TYPE_FROM, fmt, ap);
va_end(ap);
/*
* If we just saved the "." command, replay the log.
*/
return (strcmp(fmt, ".") ? 0 : smtpd_proxy_replay_send(state));
}
int milter_send(MILTERS *milters, VSTREAM *stream)
{
MILTER *m;
int status = 0;
int count = 0;
/*
* XXX Optimization: send only the filters that are actually used in the
* remote process. No point sending a filter that looks at HELO commands
* to a cleanup server. For now we skip only the filters that are known
* to be disabled (either in global error state or in global accept
* state).
*
* XXX We must send *some* information, even when there are no active
* filters, otherwise the cleanup server would try to apply its own
* non_smtpd_milters settings.
*/
if (milters != 0)
for (m = milters->milter_list; m != 0; m = m->next)
if (m->active(m))
count++;
(void) rec_fprintf(stream, REC_TYPE_MILT_COUNT, "%d", count);
if (msg_verbose)
msg_info("send %d milters", count);
/*
* XXX Optimization: don't send or receive further information when there
* aren't any active filters.
*/
if (count <= 0)
return (0);
/*
* Send the filter macro name lists.
*/
(void) attr_print(stream, ATTR_FLAG_MORE,
ATTR_TYPE_FUNC, milter_macros_print,
(void *) milters->macros,
ATTR_TYPE_END);
/*
* Send the filter instances.
*/
for (m = milters->milter_list; m != 0; m = m->next)
if (m->active(m) && (status = m->send(m, stream)) != 0)
break;
/*
* Over to you.
*/
if (status != 0
|| attr_scan(stream, ATTR_FLAG_STRICT,
ATTR_TYPE_INT, MAIL_ATTR_STATUS, &status,
ATTR_TYPE_END) != 1
|| status != 0) {
msg_warn("cannot send milters to service %s", VSTREAM_PATH(stream));
return (-1);
}
return (0);
}
static void enqueue(const int flags, const char *encoding,
const char *dsn_envid, int dsn_ret, int dsn_notify,
const char *rewrite_context, const char *sender,
const char *full_name, char **recipients)
{
VSTRING *buf;
VSTREAM *dst;
char *saved_sender;
char **cpp;
int type;
char *start;
int skip_from_;
TOK822 *tree;
TOK822 *tp;
int rcpt_count = 0;
enum {
STRIP_CR_DUNNO, STRIP_CR_DO, STRIP_CR_DONT, STRIP_CR_ERROR
} strip_cr;
MAIL_STREAM *handle;
VSTRING *postdrop_command;
uid_t uid = getuid();
int status;
int naddr;
int prev_type;
MIME_STATE *mime_state = 0;
SM_STATE state;
int mime_errs;
const char *errstr;
int addr_count;
int level;
static NAME_CODE sm_fix_eol_table[] = {
SM_FIX_EOL_ALWAYS, STRIP_CR_DO,
SM_FIX_EOL_STRICT, STRIP_CR_DUNNO,
SM_FIX_EOL_NEVER, STRIP_CR_DONT,
0, STRIP_CR_ERROR,
};
/*
* Access control is enforced in the postdrop command. The code here
* merely produces a more user-friendly interface.
*/
if ((errstr = check_user_acl_byuid(VAR_SUBMIT_ACL,
var_submit_acl, uid)) != 0)
msg_fatal_status(EX_NOPERM,
"User %s(%ld) is not allowed to submit mail", errstr, (long) uid);
/*
* Initialize.
*/
buf = vstring_alloc(100);
/*
* Stop run-away process accidents by limiting the queue file size. This
* is not a defense against DOS attack.
*/
if (var_message_limit > 0 && get_file_limit() > var_message_limit)
set_file_limit((off_t) var_message_limit);
/*
* The sender name is provided by the user. In principle, the mail pickup
* service could deduce the sender name from queue file ownership, but:
* pickup would not be able to run chrooted, and it may not be desirable
* to use login names at all.
*/
if (sender != 0) {
VSTRING_RESET(buf);
VSTRING_TERMINATE(buf);
tree = tok822_parse(sender);
for (naddr = 0, tp = tree; tp != 0; tp = tp->next)
if (tp->type == TOK822_ADDR && naddr++ == 0)
tok822_internalize(buf, tp->head, TOK822_STR_DEFL);
tok822_free_tree(tree);
saved_sender = mystrdup(STR(buf));
if (naddr > 1)
msg_warn("-f option specified malformed sender: %s", sender);
} else {
if ((sender = username()) == 0)
msg_fatal_status(EX_OSERR, "no login name found for user ID %lu",
(unsigned long) uid);
saved_sender = mystrdup(sender);
}
/*
* Let the postdrop command open the queue file for us, and sanity check
* the content. XXX Make postdrop a manifest constant.
*/
errno = 0;
postdrop_command = vstring_alloc(1000);
vstring_sprintf(postdrop_command, "%s/postdrop -r", var_command_dir);
for (level = 0; level < msg_verbose; level++)
vstring_strcat(postdrop_command, " -v");
if ((handle = mail_stream_command(STR(postdrop_command))) == 0)
msg_fatal_status(EX_UNAVAILABLE, "%s(%ld): unable to execute %s: %m",
saved_sender, (long) uid, STR(postdrop_command));
vstring_free(postdrop_command);
dst = handle->stream;
/*
* First, write envelope information to the output stream.
*
* For sendmail compatibility, parse each command-line recipient as if it
* were an RFC 822 message header; some MUAs specify comma-separated
* recipient lists; and some MUAs even specify "word word <address>".
*
* Sort-uniq-ing the recipient list is done after address canonicalization,
* before recipients are written to queue file. That's cleaner than
* having the queue manager nuke duplicate recipient status records.
*
* XXX Should limit the size of envelope records.
*
* With "sendmail -N", instead of a per-message NOTIFY record we store one
* per recipient so that we can simplify the implementation somewhat.
*/
if (dsn_envid)
rec_fprintf(dst, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_DSN_ENVID, dsn_envid);
if (dsn_ret)
rec_fprintf(dst, REC_TYPE_ATTR, "%s=%d",
MAIL_ATTR_DSN_RET, dsn_ret);
rec_fprintf(dst, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_RWR_CONTEXT, rewrite_context);
if (full_name || (full_name = fullname()) != 0)
rec_fputs(dst, REC_TYPE_FULL, full_name);
rec_fputs(dst, REC_TYPE_FROM, saved_sender);
if (verp_delims && *saved_sender == 0)
msg_fatal_status(EX_USAGE,
"%s(%ld): -V option requires non-null sender address",
saved_sender, (long) uid);
if (encoding)
rec_fprintf(dst, REC_TYPE_ATTR, "%s=%s", MAIL_ATTR_ENCODING, encoding);
if (DEL_REQ_TRACE_FLAGS(flags))
rec_fprintf(dst, REC_TYPE_ATTR, "%s=%d", MAIL_ATTR_TRACE_FLAGS,
DEL_REQ_TRACE_FLAGS(flags));
if (verp_delims)
rec_fputs(dst, REC_TYPE_VERP, verp_delims);
if (recipients) {
for (cpp = recipients; *cpp != 0; cpp++) {
tree = tok822_parse(*cpp);
for (addr_count = 0, tp = tree; tp != 0; tp = tp->next) {
if (tp->type == TOK822_ADDR) {
tok822_internalize(buf, tp->head, TOK822_STR_DEFL);
if (dsn_notify)
rec_fprintf(dst, REC_TYPE_ATTR, "%s=%d",
MAIL_ATTR_DSN_NOTIFY, dsn_notify);
if (REC_PUT_BUF(dst, REC_TYPE_RCPT, buf) < 0)
msg_fatal_status(EX_TEMPFAIL,
"%s(%ld): error writing queue file: %m",
saved_sender, (long) uid);
++rcpt_count;
++addr_count;
}
}
tok822_free_tree(tree);
if (addr_count == 0) {
if (rec_put(dst, REC_TYPE_RCPT, "", 0) < 0)
msg_fatal_status(EX_TEMPFAIL,
"%s(%ld): error writing queue file: %m",
saved_sender, (long) uid);
++rcpt_count;
}
}
}
/*
* Append the message contents to the queue file. Write chunks of at most
* 1kbyte. Internally, we use different record types for data ending in
* LF and for data that doesn't, so we can actually be binary transparent
* for local mail. Unfortunately, SMTP has no record continuation
* convention, so there is no guarantee that arbitrary data will be
* delivered intact via SMTP. Strip leading From_ lines. For the benefit
* of UUCP environments, also get rid of leading >>>From_ lines.
*/
rec_fputs(dst, REC_TYPE_MESG, "");
if (DEL_REQ_TRACE_ONLY(flags) != 0) {
if (flags & SM_FLAG_XRCPT)
msg_fatal_status(EX_USAGE, "%s(%ld): -t option cannot be used with -bv",
saved_sender, (long) uid);
if (*saved_sender)
rec_fprintf(dst, REC_TYPE_NORM, "From: %s", saved_sender);
rec_fprintf(dst, REC_TYPE_NORM, "Subject: probe");
if (recipients) {
rec_fprintf(dst, REC_TYPE_CONT, "To:");
for (cpp = recipients; *cpp != 0; cpp++) {
rec_fprintf(dst, REC_TYPE_NORM, " %s%s",
*cpp, cpp[1] ? "," : "");
}
}
} else {
/*
* Initialize the MIME processor and set up the callback context.
*/
if (flags & SM_FLAG_XRCPT) {
state.dst = dst;
state.recipients = argv_alloc(2);
state.resent_recip = argv_alloc(2);
state.resent = 0;
state.saved_sender = saved_sender;
state.uid = uid;
state.temp = vstring_alloc(10);
mime_state = mime_state_alloc(MIME_OPT_DISABLE_MIME
| MIME_OPT_REPORT_TRUNC_HEADER,
output_header,
(MIME_STATE_ANY_END) 0,
output_text,
(MIME_STATE_ANY_END) 0,
(MIME_STATE_ERR_PRINT) 0,
(void *) &state);
}
/*
* Process header/body lines.
*/
skip_from_ = 1;
strip_cr = name_code(sm_fix_eol_table, NAME_CODE_FLAG_STRICT_CASE,
var_sm_fix_eol);
if (strip_cr == STRIP_CR_ERROR)
msg_fatal_status(EX_USAGE,
"invalid %s value: %s", VAR_SM_FIX_EOL, var_sm_fix_eol);
for (prev_type = 0; (type = rec_streamlf_get(VSTREAM_IN, buf, var_line_limit))
!= REC_TYPE_EOF; prev_type = type) {
if (strip_cr == STRIP_CR_DUNNO && type == REC_TYPE_NORM) {
if (VSTRING_LEN(buf) > 0 && vstring_end(buf)[-1] == '\r')
strip_cr = STRIP_CR_DO;
else
strip_cr = STRIP_CR_DONT;
}
if (skip_from_) {
if (type == REC_TYPE_NORM) {
start = STR(buf);
if (strncmp(start + strspn(start, ">"), "From ", 5) == 0)
continue;
}
skip_from_ = 0;
}
if (strip_cr == STRIP_CR_DO && type == REC_TYPE_NORM)
while (VSTRING_LEN(buf) > 0 && vstring_end(buf)[-1] == '\r')
vstring_truncate(buf, VSTRING_LEN(buf) - 1);
if ((flags & SM_FLAG_AEOF) && prev_type != REC_TYPE_CONT
&& VSTRING_LEN(buf) == 1 && *STR(buf) == '.')
break;
if (mime_state) {
mime_errs = mime_state_update(mime_state, type, STR(buf),
VSTRING_LEN(buf));
if (mime_errs)
msg_fatal_status(EX_DATAERR,
"%s(%ld): unable to extract recipients: %s",
saved_sender, (long) uid,
mime_state_error(mime_errs));
} else {
if (REC_PUT_BUF(dst, type, buf) < 0)
msg_fatal_status(EX_TEMPFAIL,
"%s(%ld): error writing queue file: %m",
saved_sender, (long) uid);
}
}
}
/*
* Finish MIME processing. We need a final mime_state_update() call in
* order to flush text that is still buffered. That can happen when the
* last line did not end in newline.
*/
if (mime_state) {
mime_errs = mime_state_update(mime_state, REC_TYPE_EOF, "", 0);
if (mime_errs)
msg_fatal_status(EX_DATAERR,
"%s(%ld): unable to extract recipients: %s",
saved_sender, (long) uid,
mime_state_error(mime_errs));
mime_state = mime_state_free(mime_state);
}
/*
* Append recipient addresses that were extracted from message headers.
*/
rec_fputs(dst, REC_TYPE_XTRA, "");
if (flags & SM_FLAG_XRCPT) {
for (cpp = state.resent ? state.resent_recip->argv :
state.recipients->argv; *cpp; cpp++) {
if (dsn_notify)
rec_fprintf(dst, REC_TYPE_ATTR, "%s=%d",
MAIL_ATTR_DSN_NOTIFY, dsn_notify);
if (rec_put(dst, REC_TYPE_RCPT, *cpp, strlen(*cpp)) < 0)
msg_fatal_status(EX_TEMPFAIL,
"%s(%ld): error writing queue file: %m",
saved_sender, (long) uid);
++rcpt_count;
}
argv_free(state.recipients);
argv_free(state.resent_recip);
vstring_free(state.temp);
}
if (rcpt_count == 0)
msg_fatal_status(EX_USAGE, (flags & SM_FLAG_XRCPT) ?
"%s(%ld): No recipient addresses found in message header" :
"%s(%ld): Recipient addresses must be specified on"
" the command line or via the -t option",
saved_sender, (long) uid);
/*
* Identify the end of the queue file.
*/
rec_fputs(dst, REC_TYPE_END, "");
/*
* Make sure that the message makes it to the file system. Once we have
* terminated with successful exit status we cannot lose the message due
* to "frivolous reasons". If all goes well, prevent the run-time error
* handler from removing the file.
*/
if (vstream_ferror(VSTREAM_IN))
msg_fatal_status(EX_DATAERR, "%s(%ld): error reading input: %m",
saved_sender, (long) uid);
if ((status = mail_stream_finish(handle, (VSTRING *) 0)) != 0)
msg_fatal_status((status & CLEANUP_STAT_BAD) ? EX_SOFTWARE :
(status & CLEANUP_STAT_WRITE) ? EX_TEMPFAIL :
EX_UNAVAILABLE, "%s(%ld): %s", saved_sender,
(long) uid, cleanup_strerror(status));
/*
* Don't leave them in the dark.
*/
if (DEL_REQ_TRACE_FLAGS(flags)) {
vstream_printf("Mail Delivery Status Report will be mailed to <%s>.\n",
saved_sender);
vstream_fflush(VSTREAM_OUT);
}
/*
* Cleanup. Not really necessary as we're about to exit, but good for
* debugging purposes.
*/
vstring_free(buf);
myfree(saved_sender);
}
static void qmqpd_write_content(QMQPD_STATE *state)
{
char *start;
char *next;
int len;
int rec_type;
int first = 1;
int ch;
/*
* Start the message content segment. Prepend our own Received: header to
* the message content. List the recipient only when a message has one
* recipient. Otherwise, don't list the recipient to avoid revealing Bcc:
* recipients that are supposed to be invisible.
*/
rec_fputs(state->cleanup, REC_TYPE_MESG, "");
rec_fprintf(state->cleanup, REC_TYPE_NORM, "Received: from %s (%s [%s])",
state->name, state->name, state->rfc_addr);
if (state->rcpt_count == 1 && state->recipient) {
rec_fprintf(state->cleanup, REC_TYPE_NORM,
"\tby %s (%s) with %s id %s",
var_myhostname, var_mail_name,
state->protocol, state->queue_id);
quote_822_local(state->buf, state->recipient);
rec_fprintf(state->cleanup, REC_TYPE_NORM,
"\tfor <%s>; %s", STR(state->buf),
mail_date(state->arrival_time.tv_sec));
} else {
rec_fprintf(state->cleanup, REC_TYPE_NORM,
"\tby %s (%s) with %s",
var_myhostname, var_mail_name, state->protocol);
rec_fprintf(state->cleanup, REC_TYPE_NORM,
"\tid %s; %s", state->queue_id,
mail_date(state->arrival_time.tv_sec));
}
#ifdef RECEIVED_ENVELOPE_FROM
quote_822_local(state->buf, state->sender);
rec_fprintf(state->cleanup, REC_TYPE_NORM,
"\t(envelope-from <%s>)", STR(state->buf));
#endif
/*
* Write the message content.
*
* XXX Force an empty record when the queue file content begins with
* whitespace, so that it won't be considered as being part of our own
* Received: header. What an ugly Kluge.
*
* XXX Deal with UNIX-style From_ lines at the start of message content just
* in case.
*/
for (next = STR(state->message); /* void */ ; /* void */ ) {
if ((ch = qmqpd_next_line(state->message, &start, &len, &next)) < 0)
break;
if (ch == '\n')
rec_type = REC_TYPE_NORM;
else
rec_type = REC_TYPE_CONT;
if (first) {
if (strncmp(start + strspn(start, ">"), "From ", 5) == 0) {
rec_fprintf(state->cleanup, rec_type,
"X-Mailbox-Line: %.*s", len, start);
continue;
}
first = 0;
if (len > 0 && IS_SPACE_TAB(start[0]))
rec_put(state->cleanup, REC_TYPE_NORM, "", 0);
}
if (rec_put(state->cleanup, rec_type, start, len) < 0) {
state->err = CLEANUP_STAT_WRITE;
return;
}
}
}
int main(int argc, char **argv)
{
struct stat st;
int fd;
int c;
VSTRING *buf;
int status;
MAIL_STREAM *dst;
int rec_type;
static char *segment_info[] = {
REC_TYPE_POST_ENVELOPE, REC_TYPE_POST_CONTENT, REC_TYPE_POST_EXTRACT, ""
};
char **expected;
uid_t uid = getuid();
ARGV *import_env;
const char *error_text;
char *attr_name;
char *attr_value;
const char *errstr;
char *junk;
struct timeval start;
int saved_errno;
int from_count = 0;
int rcpt_count = 0;
int validate_input = 1;
/*
* Fingerprint executables and core dumps.
*/
MAIL_VERSION_STAMP_ALLOCATE;
/*
* Be consistent with file permissions.
*/
umask(022);
/*
* To minimize confusion, make sure that the standard file descriptors
* are open before opening anything else. XXX Work around for 44BSD where
* fstat can return EBADF on an open file descriptor.
*/
for (fd = 0; fd < 3; fd++)
if (fstat(fd, &st) == -1
&& (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
msg_fatal("open /dev/null: %m");
/*
* Set up logging. Censor the process name: it is provided by the user.
*/
argv[0] = "postdrop";
msg_vstream_init(argv[0], VSTREAM_ERR);
msg_syslog_init(mail_task("postdrop"), LOG_PID, LOG_FACILITY);
set_mail_conf_str(VAR_PROCNAME, var_procname = mystrdup(argv[0]));
/*
* Check the Postfix library version as soon as we enable logging.
*/
MAIL_VERSION_CHECK;
/*
* Parse JCL. This program is set-gid and must sanitize all command-line
* arguments. The configuration directory argument is validated by the
* mail configuration read routine. Don't do complex things until we have
* completed initializations.
*/
while ((c = GETOPT(argc, argv, "c:rv")) > 0) {
switch (c) {
case 'c':
if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
msg_fatal("out of memory");
break;
case 'r': /* forward compatibility */
break;
case 'v':
if (geteuid() == 0)
msg_verbose++;
break;
default:
msg_fatal("usage: %s [-c config_dir] [-v]", argv[0]);
}
}
/*
* Read the global configuration file and extract configuration
* information. Some claim that the user should supply the working
* directory instead. That might be OK, given that this command needs
* write permission in a subdirectory called "maildrop". However we still
* need to reliably detect incomplete input, and so we must perform
* record-level I/O. With that, we should also take the opportunity to
* perform some sanity checks on the input.
*/
mail_conf_read();
/* Re-evaluate mail_task() after reading main.cf. */
msg_syslog_init(mail_task("postdrop"), LOG_PID, LOG_FACILITY);
get_mail_conf_str_table(str_table);
/*
* Mail submission access control. Should this be in the user-land gate,
* or in the daemon process?
*/
mail_dict_init();
if ((errstr = check_user_acl_byuid(VAR_SUBMIT_ACL, var_submit_acl,
uid)) != 0)
msg_fatal("User %s(%ld) is not allowed to submit mail",
errstr, (long) uid);
/*
* Stop run-away process accidents by limiting the queue file size. This
* is not a defense against DOS attack.
*/
if (var_message_limit > 0 && get_file_limit() > var_message_limit)
set_file_limit((off_t) var_message_limit);
/*
* This program is installed with setgid privileges. Strip the process
* environment so that we don't have to trust the C library.
*/
import_env = mail_parm_split(VAR_IMPORT_ENVIRON, var_import_environ);
clean_env(import_env->argv);
argv_free(import_env);
if (chdir(var_queue_dir))
msg_fatal("chdir %s: %m", var_queue_dir);
if (msg_verbose)
msg_info("chdir %s", var_queue_dir);
/*
* Set up signal handlers and a runtime error handler so that we can
* clean up incomplete output.
*
* postdrop_sig() uses the in-kernel SIGINT handler address as an atomic
* variable to prevent nested postdrop_sig() calls. For this reason, the
* SIGINT handler must be configured before other signal handlers are
* allowed to invoke postdrop_sig().
*/
signal(SIGPIPE, SIG_IGN);
signal(SIGXFSZ, SIG_IGN);
signal(SIGINT, postdrop_sig);
signal(SIGQUIT, postdrop_sig);
if (signal(SIGTERM, SIG_IGN) == SIG_DFL)
signal(SIGTERM, postdrop_sig);
if (signal(SIGHUP, SIG_IGN) == SIG_DFL)
signal(SIGHUP, postdrop_sig);
msg_cleanup(postdrop_cleanup);
/* End of initializations. */
/*
* Don't trust the caller's time information.
*/
GETTIMEOFDAY(&start);
/*
* Create queue file. mail_stream_file() never fails. Send the queue ID
* to the caller. Stash away a copy of the queue file name so we can
* clean up in case of a fatal error or an interrupt.
*/
dst = mail_stream_file(MAIL_QUEUE_MAILDROP, MAIL_CLASS_PUBLIC,
var_pickup_service, 0444);
attr_print(VSTREAM_OUT, ATTR_FLAG_NONE,
SEND_ATTR_STR(MAIL_ATTR_QUEUEID, dst->id),
ATTR_TYPE_END);
vstream_fflush(VSTREAM_OUT);
postdrop_path = mystrdup(VSTREAM_PATH(dst->stream));
/*
* Copy stdin to file. The format is checked so that we can recognize
* incomplete input and cancel the operation. With the sanity checks
* applied here, the pickup daemon could skip format checks and pass a
* file descriptor to the cleanup daemon. These are by no means all
* sanity checks - the cleanup service and queue manager services will
* reject messages that lack required information.
*
* If something goes wrong, slurp up the input before responding to the
* client, otherwise the client will give up after detecting SIGPIPE.
*
* Allow attribute records if the attribute specifies the MIME body type
* (sendmail -B).
*/
vstream_control(VSTREAM_IN, CA_VSTREAM_CTL_PATH("stdin"), CA_VSTREAM_CTL_END);
buf = vstring_alloc(100);
expected = segment_info;
/* Override time information from the untrusted caller. */
rec_fprintf(dst->stream, REC_TYPE_TIME, REC_TYPE_TIME_FORMAT,
REC_TYPE_TIME_ARG(start));
for (;;) {
/* Don't allow PTR records. */
rec_type = rec_get_raw(VSTREAM_IN, buf, var_line_limit, REC_FLAG_NONE);
if (rec_type == REC_TYPE_EOF) { /* request cancelled */
mail_stream_cleanup(dst);
if (remove(postdrop_path))
msg_warn("uid=%ld: remove %s: %m", (long) uid, postdrop_path);
else if (msg_verbose)
msg_info("remove %s", postdrop_path);
myfree(postdrop_path);
postdrop_path = 0;
exit(0);
}
if (rec_type == REC_TYPE_ERROR)
msg_fatal("uid=%ld: malformed input", (long) uid);
if (strchr(*expected, rec_type) == 0)
msg_fatal("uid=%ld: unexpected record type: %d", (long) uid, rec_type);
if (rec_type == **expected)
expected++;
/* Override time information from the untrusted caller. */
if (rec_type == REC_TYPE_TIME)
continue;
/* Check these at submission time instead of pickup time. */
if (rec_type == REC_TYPE_FROM)
from_count++;
if (rec_type == REC_TYPE_RCPT)
rcpt_count++;
/* Limit the attribute types that users may specify. */
if (rec_type == REC_TYPE_ATTR) {
if ((error_text = split_nameval(vstring_str(buf), &attr_name,
&attr_value)) != 0) {
msg_warn("uid=%ld: ignoring malformed record: %s: %.200s",
(long) uid, error_text, vstring_str(buf));
continue;
}
#define STREQ(x,y) (strcmp(x,y) == 0)
if ((STREQ(attr_name, MAIL_ATTR_ENCODING)
&& (STREQ(attr_value, MAIL_ATTR_ENC_7BIT)
|| STREQ(attr_value, MAIL_ATTR_ENC_8BIT)
|| STREQ(attr_value, MAIL_ATTR_ENC_NONE)))
|| STREQ(attr_name, MAIL_ATTR_DSN_ENVID)
|| STREQ(attr_name, MAIL_ATTR_DSN_NOTIFY)
|| rec_attr_map(attr_name)
|| (STREQ(attr_name, MAIL_ATTR_RWR_CONTEXT)
&& (STREQ(attr_value, MAIL_ATTR_RWR_LOCAL)
|| STREQ(attr_value, MAIL_ATTR_RWR_REMOTE)))
|| STREQ(attr_name, MAIL_ATTR_TRACE_FLAGS)) { /* XXX */
rec_fprintf(dst->stream, REC_TYPE_ATTR, "%s=%s",
attr_name, attr_value);
} else {
msg_warn("uid=%ld: ignoring attribute record: %.200s=%.200s",
(long) uid, attr_name, attr_value);
}
continue;
}
if (REC_PUT_BUF(dst->stream, rec_type, buf) < 0) {
/* rec_get() errors must not clobber errno. */
saved_errno = errno;
while ((rec_type = rec_get_raw(VSTREAM_IN, buf, var_line_limit,
REC_FLAG_NONE)) != REC_TYPE_END
&& rec_type != REC_TYPE_EOF)
if (rec_type == REC_TYPE_ERROR)
msg_fatal("uid=%ld: malformed input", (long) uid);
validate_input = 0;
errno = saved_errno;
break;
}
if (rec_type == REC_TYPE_END)
break;
}
vstring_free(buf);
/*
* As of Postfix 2.7 the pickup daemon discards mail without recipients.
* Such mail may enter the maildrop queue when "postsuper -r" is invoked
* before the queue manager deletes an already delivered message. Looking
* at file ownership is not a good way to make decisions on what mail to
* discard. Instead, the pickup server now requires that new submissions
* always have at least one recipient record.
*
* The Postfix sendmail command already rejects mail without recipients.
* However, in the future postdrop may receive mail via other programs,
* so we add a redundant recipient check here for future proofing.
*
* The test for the sender address is just for consistency of error
* reporting (report at submission time instead of pickup time). Besides
* the segment terminator records, there aren't any other mandatory
* records in a Postfix submission queue file.
*/
if (validate_input && (from_count == 0 || rcpt_count == 0)) {
status = CLEANUP_STAT_BAD;
mail_stream_cleanup(dst);
}
/*
* Finish the file.
*/
else if ((status = mail_stream_finish(dst, (VSTRING *) 0)) != 0) {
msg_warn("uid=%ld: %m", (long) uid);
postdrop_cleanup();
}
/*
* Disable deletion on fatal error before reporting success, so the file
* will not be deleted after we have taken responsibility for delivery.
*/
if (postdrop_path) {
junk = postdrop_path;
postdrop_path = 0;
myfree(junk);
}
/*
* Send the completion status to the caller and terminate.
*/
attr_print(VSTREAM_OUT, ATTR_FLAG_NONE,
SEND_ATTR_INT(MAIL_ATTR_STATUS, status),
SEND_ATTR_STR(MAIL_ATTR_WHY, ""),
ATTR_TYPE_END);
vstream_fflush(VSTREAM_OUT);
exit(status);
}
static int pickup_copy(VSTREAM *qfile, VSTREAM *cleanup,
PICKUP_INFO *info, VSTRING *buf)
{
time_t now = time((time_t *) 0);
int status;
char *name;
/*
* Protect against time-warped time stamps. Warn about mail that has been
* queued for an excessive amount of time. Allow for some time drift with
* network clients that mount the maildrop remotely - especially clients
* that can't get their daylight savings offsets right.
*/
#define DAY_SECONDS 86400
#define HOUR_SECONDS 3600
if (info->st.st_mtime > now + 2 * HOUR_SECONDS) {
msg_warn("%s: message dated %ld seconds into the future",
info->id, (long) (info->st.st_mtime - now));
info->st.st_mtime = now;
} else if (info->st.st_mtime < now - DAY_SECONDS) {
msg_warn("%s: message has been queued for %d days",
info->id, (int) ((now - info->st.st_mtime) / DAY_SECONDS));
}
/*
* Add content inspection transport. See also postsuper(1).
*/
if (*var_filter_xport)
rec_fprintf(cleanup, REC_TYPE_FILT, "%s", var_filter_xport);
/*
* Copy the message envelope segment. Allow only those records that we
* expect to see in the envelope section. The envelope segment must
* contain an envelope sender address.
*/
if ((status = copy_segment(qfile, cleanup, info, buf, REC_TYPE_ENVELOPE)) != 0)
return (status);
if (info->sender == 0) {
msg_warn("%s: uid=%ld: no envelope sender",
info->id, (long) info->st.st_uid);
return (REMOVE_MESSAGE_FILE);
}
/*
* For messages belonging to $mail_owner also log the maildrop queue id.
* This supports message tracking for mail requeued via "postsuper -r".
*/
#define MAIL_IS_REQUEUED(info) \
((info)->st.st_uid == var_owner_uid && ((info)->st.st_mode & S_IROTH) == 0)
if (MAIL_IS_REQUEUED(info)) {
msg_info("%s: uid=%d from=<%s> orig_id=%s", info->id,
(int) info->st.st_uid, info->sender,
((name = strrchr(info->path, '/')) != 0 ?
name + 1 : info->path));
} else {
msg_info("%s: uid=%d from=<%s>", info->id,
(int) info->st.st_uid, info->sender);
}
/*
* Message content segment. Send a dummy message length. Prepend a
* Received: header to the message contents. For tracing purposes,
* include the message file ownership, without revealing the login name.
*/
rec_fputs(cleanup, REC_TYPE_MESG, "");
rec_fprintf(cleanup, REC_TYPE_NORM, "Received: by %s (%s, from userid %ld)",
var_myhostname, var_mail_name, (long) info->st.st_uid);
rec_fprintf(cleanup, REC_TYPE_NORM, "\tid %s; %s", info->id,
mail_date(info->st.st_mtime));
/*
* Copy the message content segment. Allow only those records that we
* expect to see in the message content section.
*/
if ((status = copy_segment(qfile, cleanup, info, buf, REC_TYPE_CONTENT)) != 0)
return (status);
/*
* Send the segment with information extracted from message headers.
* Permit a non-empty extracted segment, so that list manager software
* can to output recipients after the message, and so that sysadmins can
* re-inject messages after a change of configuration.
*/
rec_fputs(cleanup, REC_TYPE_XTRA, "");
if ((status = copy_segment(qfile, cleanup, info, buf, REC_TYPE_EXTRACT)) != 0)
return (status);
/*
* There are no errors. Send the end-of-data marker, and get the cleanup
* service completion status. XXX Since the pickup service is unable to
* bounce, the cleanup service can report only soft errors here.
*/
rec_fputs(cleanup, REC_TYPE_END, "");
if (attr_scan(cleanup, ATTR_FLAG_MISSING,
RECV_ATTR_INT(MAIL_ATTR_STATUS, &status),
RECV_ATTR_STR(MAIL_ATTR_WHY, buf),
ATTR_TYPE_END) != 2)
return (cleanup_service_error(info, CLEANUP_STAT_WRITE));
/*
* Depending on the cleanup service completion status, delete the message
* file, or try again later. Bounces are dealt with by the cleanup
* service itself. The master process wakes up the cleanup service every
* now and then.
*/
if (status) {
return (cleanup_service_error_reason(info, status, vstring_str(buf)));
} else {
return (REMOVE_MESSAGE_FILE);
}
}
static int copy_segment(VSTREAM *qfile, VSTREAM *cleanup, PICKUP_INFO *info,
VSTRING *buf, char *expected)
{
int type;
int check_first = (*expected == REC_TYPE_CONTENT[0]);
int time_seen = 0;
char *attr_name;
char *attr_value;
char *saved_attr;
int skip_attr;
/*
* Limit the input record size. All front-end programs should protect the
* mail system against unreasonable inputs. This also requires that we
* limit the size of envelope records written by the local posting agent.
*
* Records with named attributes are filtered by postdrop(1).
*
* We must allow PTR records here because of "postsuper -r".
*/
for (;;) {
if ((type = rec_get(qfile, buf, var_line_limit)) < 0
|| strchr(expected, type) == 0)
return (file_read_error(info, type));
if (msg_verbose)
msg_info("%s: read %c %s", info->id, type, vstring_str(buf));
if (type == *expected)
break;
if (type == REC_TYPE_FROM) {
if (info->sender == 0)
info->sender = mystrdup(vstring_str(buf));
/* Compatibility with Postfix < 2.3. */
if (time_seen == 0)
rec_fprintf(cleanup, REC_TYPE_TIME, "%ld",
(long) info->st.st_mtime);
}
if (type == REC_TYPE_TIME)
time_seen = 1;
/*
* XXX Workaround: REC_TYPE_FILT (used in envelopes) == REC_TYPE_CONT
* (used in message content).
*
* As documented in postsuper(1), ignore content filter record.
*/
if (*expected != REC_TYPE_CONTENT[0]) {
if (type == REC_TYPE_FILT)
/* Discard FILTER record after "postsuper -r". */
continue;
if (type == REC_TYPE_RDR)
/* Discard REDIRECT record after "postsuper -r". */
continue;
}
if (*expected == REC_TYPE_EXTRACT[0]) {
if (type == REC_TYPE_RRTO)
/* Discard return-receipt record after "postsuper -r". */
continue;
if (type == REC_TYPE_ERTO)
/* Discard errors-to record after "postsuper -r". */
continue;
if (type == REC_TYPE_ATTR) {
saved_attr = mystrdup(vstring_str(buf));
skip_attr = (split_nameval(saved_attr,
&attr_name, &attr_value) == 0
&& rec_attr_map(attr_name) == 0);
myfree(saved_attr);
/* Discard other/header/body action after "postsuper -r". */
if (skip_attr)
continue;
}
}
/*
* XXX Force an empty record when the queue file content begins with
* whitespace, so that it won't be considered as being part of our
* own Received: header. What an ugly Kluge.
*/
if (check_first
&& (type == REC_TYPE_NORM || type == REC_TYPE_CONT)) {
check_first = 0;
if (VSTRING_LEN(buf) > 0 && IS_SPACE_TAB(vstring_str(buf)[0]))
rec_put(cleanup, REC_TYPE_NORM, "", 0);
}
if ((REC_PUT_BUF(cleanup, type, buf)) < 0)
return (cleanup_service_error(info, CLEANUP_STAT_WRITE));
}
return (0);
}
static int forward_send(FORWARD_INFO *info, DELIVER_REQUEST *request,
DELIVER_ATTR attr, char *delivered)
{
const char *myname = "forward_send";
VSTRING *buffer = vstring_alloc(100);
VSTRING *folded;
int status;
int rec_type = 0;
/*
* Start the message content segment. Prepend our Delivered-To: header to
* the message data. Stop at the first error. XXX Rely on the front-end
* services to enforce record size limits.
*/
rec_fputs(info->cleanup, REC_TYPE_MESG, "");
vstring_strcpy(buffer, delivered);
rec_fprintf(info->cleanup, REC_TYPE_NORM, "Received: by %s (%s)",
var_myhostname, var_mail_name);
rec_fprintf(info->cleanup, REC_TYPE_NORM, "\tid %s; %s",
info->queue_id, mail_date(info->posting_time.tv_sec));
if (local_deliver_hdr_mask & DELIVER_HDR_FWD) {
folded = vstring_alloc(100);
rec_fprintf(info->cleanup, REC_TYPE_NORM, "Delivered-To: %s",
casefold(folded, (STR(buffer))));
vstring_free(folded);
}
if ((status = vstream_ferror(info->cleanup)) == 0)
if (vstream_fseek(attr.fp, attr.offset, SEEK_SET) < 0)
msg_fatal("%s: seek queue file %s: %m:",
myname, VSTREAM_PATH(attr.fp));
while (status == 0 && (rec_type = rec_get(attr.fp, buffer, 0)) > 0) {
if (rec_type != REC_TYPE_CONT && rec_type != REC_TYPE_NORM)
break;
status = (REC_PUT_BUF(info->cleanup, rec_type, buffer) != rec_type);
}
if (status == 0 && rec_type != REC_TYPE_XTRA) {
msg_warn("%s: bad record type: %d in message content",
info->queue_id, rec_type);
status |= mark_corrupt(attr.fp);
}
/*
* Send the end-of-data marker only when there were no errors.
*/
if (status == 0) {
rec_fputs(info->cleanup, REC_TYPE_XTRA, "");
rec_fputs(info->cleanup, REC_TYPE_END, "");
}
/*
* Retrieve the cleanup service completion status only if there are no
* problems.
*/
if (status == 0)
if (vstream_fflush(info->cleanup)
|| attr_scan(info->cleanup, ATTR_FLAG_MISSING,
RECV_ATTR_INT(MAIL_ATTR_STATUS, &status),
ATTR_TYPE_END) != 1)
status = 1;
/*
* Log successful forwarding.
*
* XXX DSN alias and .forward expansion already report SUCCESS, so don't do
* it again here.
*/
if (status == 0) {
attr.rcpt.dsn_notify =
(attr.rcpt.dsn_notify == DSN_NOTIFY_SUCCESS ?
DSN_NOTIFY_NEVER : attr.rcpt.dsn_notify & ~DSN_NOTIFY_SUCCESS);
dsb_update(attr.why, "2.0.0", "relayed", DSB_SKIP_RMTA, DSB_SKIP_REPLY,
"forwarded as %s", info->queue_id);
status = sent(BOUNCE_FLAGS(request), SENT_ATTR(attr));
}
/*
* Cleanup.
*/
vstring_free(buffer);
return (status);
}
static FORWARD_INFO *forward_open(DELIVER_REQUEST *request, const char *sender)
{
VSTRING *buffer = vstring_alloc(100);
FORWARD_INFO *info;
VSTREAM *cleanup;
#define FORWARD_OPEN_RETURN(res) do { \
vstring_free(buffer); \
return (res); \
} while (0)
/*
* Contact the cleanup service and save the new mail queue id. Request
* that the cleanup service bounces bad messages to the sender so that we
* can avoid the trouble of bounce management.
*
* In case you wonder what kind of bounces, examples are "too many hops",
* "message too large", perhaps some others. The reason not to bounce
* ourselves is that we don't really know who the recipients are.
*/
cleanup = mail_connect(MAIL_CLASS_PUBLIC, var_cleanup_service, BLOCKING);
if (cleanup == 0) {
msg_warn("connect to %s/%s: %m",
MAIL_CLASS_PUBLIC, var_cleanup_service);
FORWARD_OPEN_RETURN(0);
}
close_on_exec(vstream_fileno(cleanup), CLOSE_ON_EXEC);
if (attr_scan(cleanup, ATTR_FLAG_STRICT,
RECV_ATTR_STR(MAIL_ATTR_QUEUEID, buffer),
ATTR_TYPE_END) != 1) {
vstream_fclose(cleanup);
FORWARD_OPEN_RETURN(0);
}
info = (FORWARD_INFO *) mymalloc(sizeof(FORWARD_INFO));
info->cleanup = cleanup;
info->queue_id = mystrdup(STR(buffer));
GETTIMEOFDAY(&info->posting_time);
#define FORWARD_CLEANUP_FLAGS \
(CLEANUP_FLAG_BOUNCE | CLEANUP_FLAG_MASK_INTERNAL \
| smtputf8_autodetect(MAIL_SRC_MASK_FORWARD) \
| ((request->smtputf8 & SMTPUTF8_FLAG_REQUESTED) ? \
CLEANUP_FLAG_SMTPUTF8 : 0))
attr_print(cleanup, ATTR_FLAG_NONE,
SEND_ATTR_INT(MAIL_ATTR_FLAGS, FORWARD_CLEANUP_FLAGS),
ATTR_TYPE_END);
/*
* Send initial message envelope information. For bounces, set the
* designated sender: mailing list owner, posting user, whatever.
*/
rec_fprintf(cleanup, REC_TYPE_TIME, REC_TYPE_TIME_FORMAT,
REC_TYPE_TIME_ARG(info->posting_time));
rec_fputs(cleanup, REC_TYPE_FROM, sender);
/*
* Don't send the original envelope ID or full/headers return mask if it
* was reset due to mailing list expansion.
*/
if (request->dsn_ret)
rec_fprintf(cleanup, REC_TYPE_ATTR, "%s=%d",
MAIL_ATTR_DSN_RET, request->dsn_ret);
if (request->dsn_envid && *(request->dsn_envid))
rec_fprintf(cleanup, REC_TYPE_ATTR, "%s=%s",
MAIL_ATTR_DSN_ENVID, request->dsn_envid);
/*
* Zero-length attribute values are place holders for unavailable
* attribute values. See qmgr_message.c. They are not meant to be
* propagated to queue files.
*/
#define PASS_ATTR(fp, name, value) do { \
if ((value) && *(value)) \
rec_fprintf((fp), REC_TYPE_ATTR, "%s=%s", (name), (value)); \
} while (0)
/*
* XXX encapsulate these as one object.
*/
PASS_ATTR(cleanup, MAIL_ATTR_LOG_CLIENT_NAME, request->client_name);
PASS_ATTR(cleanup, MAIL_ATTR_LOG_CLIENT_ADDR, request->client_addr);
PASS_ATTR(cleanup, MAIL_ATTR_LOG_PROTO_NAME, request->client_proto);
PASS_ATTR(cleanup, MAIL_ATTR_LOG_HELO_NAME, request->client_helo);
PASS_ATTR(cleanup, MAIL_ATTR_SASL_METHOD, request->sasl_method);
PASS_ATTR(cleanup, MAIL_ATTR_SASL_USERNAME, request->sasl_username);
PASS_ATTR(cleanup, MAIL_ATTR_SASL_SENDER, request->sasl_sender);
PASS_ATTR(cleanup, MAIL_ATTR_LOG_IDENT, request->log_ident);
PASS_ATTR(cleanup, MAIL_ATTR_RWR_CONTEXT, request->rewrite_context);
FORWARD_OPEN_RETURN(info);
}
