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opensmtpd.c
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/*
* Copyright (c) 2019 Martijn van Duren <[email protected]>
*
* 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 THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
*/
#define _GNU_SOURCE 1
#include <sys/time.h>
#include <sys/tree.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <inttypes.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include "openbsd-compat.h"
#include "opensmtpd.h"
#include "ioev.h"
#define NITEMS(x) (sizeof(x) / sizeof(*x))
struct osmtpd_callback {
enum osmtpd_type type;
enum osmtpd_phase phase;
int incoming;
void (*osmtpd_cb)(struct osmtpd_callback *, struct osmtpd_ctx *, char *,
char *);
void *cb;
int doregister;
int storereport;
};
struct osmtpd_session {
struct osmtpd_ctx ctx;
RB_ENTRY(osmtpd_session) entry;
};
static void osmtpd_register(enum osmtpd_type, enum osmtpd_phase, int, int,
void *);
static const char *osmtpd_typetostr(enum osmtpd_type);
static const char *osmtpd_phasetostr(enum osmtpd_phase);
static enum osmtpd_phase osmtpd_strtophase(const char *, const char *);
static void osmtpd_newline(struct io *, int, void *);
static void osmtpd_outevt(struct io *, int, void *);
static void osmtpd_noargs(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_onearg(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_connect(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_identify(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_link_connect(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_link_disconnect(struct osmtpd_callback *,
struct osmtpd_ctx *, char *, char *);
static void osmtpd_link_greeting(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_link_identify(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_link_tls(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_tx_begin(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_tx_mail(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_tx_rcpt(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_tx_envelope(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_tx_data(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_tx_commit(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_tx_rollback(struct osmtpd_callback *, struct osmtpd_ctx *,
char *, char *);
static void osmtpd_addrtoss(char *, struct sockaddr_storage *, int, char *);
static enum osmtpd_status osmtpd_strtostatus(const char *, char *);
static int osmtpd_session_cmp(struct osmtpd_session *, struct osmtpd_session *);
static void *(*oncreatecb_session)(struct osmtpd_ctx *) = NULL;
static void (*ondeletecb_session)(struct osmtpd_ctx *, void *) = NULL;
static void *(*oncreatecb_message)(struct osmtpd_ctx *) = NULL;
static void (*ondeletecb_message)(struct osmtpd_ctx *, void *) = NULL;
static void (*conf_cb)(const char *, const char *);
static struct osmtpd_callback osmtpd_callbacks[] = {
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_CONNECT,
1,
osmtpd_connect,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_HELO,
1,
osmtpd_identify,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_EHLO,
1,
osmtpd_identify,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_STARTTLS,
1,
osmtpd_noargs,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_AUTH,
1,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_MAIL_FROM,
1,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_RCPT_TO,
1,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_DATA,
1,
osmtpd_noargs,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_DATA_LINE,
1,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_RSET,
1,
osmtpd_noargs,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_QUIT,
1,
osmtpd_noargs,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_NOOP,
1,
osmtpd_noargs,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_HELP,
1,
osmtpd_noargs,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_WIZ,
1,
osmtpd_noargs,
NULL,
0,
0
},
{
OSMTPD_TYPE_FILTER,
OSMTPD_PHASE_COMMIT,
1,
osmtpd_noargs,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_CONNECT,
1,
osmtpd_link_connect,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_DISCONNECT,
1,
osmtpd_link_disconnect,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_GREETING,
1,
osmtpd_link_greeting,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_IDENTIFY,
1,
osmtpd_link_identify,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_TLS,
1,
osmtpd_link_tls,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_BEGIN,
1,
osmtpd_tx_begin,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_MAIL,
1,
osmtpd_tx_mail,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_RCPT,
1,
osmtpd_tx_rcpt,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_ENVELOPE,
1,
osmtpd_tx_envelope,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_DATA,
1,
osmtpd_tx_data,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_COMMIT,
1,
osmtpd_tx_commit,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_ROLLBACK,
1,
osmtpd_tx_rollback,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_PROTOCOL_CLIENT,
1,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_PROTOCOL_SERVER,
1,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_FILTER_RESPONSE,
1,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TIMEOUT,
1,
osmtpd_noargs,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_CONNECT,
0,
osmtpd_link_connect,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_DISCONNECT,
0,
osmtpd_link_disconnect,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_GREETING,
0,
osmtpd_link_greeting,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_IDENTIFY,
0,
osmtpd_link_identify,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_LINK_TLS,
0,
osmtpd_link_tls,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_BEGIN,
0,
osmtpd_tx_begin,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_MAIL,
0,
osmtpd_tx_mail,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_RCPT,
0,
osmtpd_tx_rcpt,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_ENVELOPE,
0,
osmtpd_tx_envelope,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_DATA,
0,
osmtpd_tx_data,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_COMMIT,
0,
osmtpd_tx_commit,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_ROLLBACK,
0,
osmtpd_tx_rollback,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_PROTOCOL_CLIENT,
0,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_PROTOCOL_SERVER,
0,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_FILTER_RESPONSE,
0,
osmtpd_onearg,
NULL,
0,
0
},
{
OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TIMEOUT,
0,
osmtpd_noargs,
NULL,
0,
0
}
};
static struct io *io_stdout;
static int needs;
static int ready = 0;
/* Default from smtpd */
static int session_timeout = 300;
RB_HEAD(osmtpd_sessions, osmtpd_session) osmtpd_sessions = RB_INITIALIZER(NULL);
RB_PROTOTYPE_STATIC(osmtpd_sessions, osmtpd_session, entry, osmtpd_session_cmp);
void
osmtpd_register_conf(void (*cb)(const char *, const char *))
{
conf_cb = cb;
}
void
osmtpd_register_filter_connect(void (*cb)(struct osmtpd_ctx *, const char *,
struct sockaddr_storage *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_CONNECT, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_helo(void (*cb)(struct osmtpd_ctx *, const char *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_HELO, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_ehlo(void (*cb)(struct osmtpd_ctx *, const char *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_EHLO, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_starttls(void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_STARTTLS, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_auth(void (*cb)(struct osmtpd_ctx *, const char *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_AUTH, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_mailfrom(void (*cb)(struct osmtpd_ctx *, const char *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_MAIL_FROM, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_rcptto(void (*cb)(struct osmtpd_ctx *, const char *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_RCPT_TO, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_data(void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_DATA, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_dataline(void (*cb)(struct osmtpd_ctx *, const char *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_DATA_LINE, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_rset(void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_RSET, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_quit(void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_QUIT, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_noop(void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_NOOP, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_help(void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_HELP, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_wiz(void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_WIZ, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_filter_commit(void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_FILTER, OSMTPD_PHASE_COMMIT, 1, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT, 1, 0,
NULL);
}
void
osmtpd_register_report_connect(int incoming, void (*cb)(struct osmtpd_ctx *,
const char *, enum osmtpd_status, struct sockaddr_storage *,
struct sockaddr_storage *))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_CONNECT, incoming,
0, (void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_disconnect(int incoming, void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, (void *)cb);
}
void
osmtpd_register_report_identify(int incoming, void (*cb)(struct osmtpd_ctx *,
const char *))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_IDENTIFY,
incoming, 0, (void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_tls(int incoming, void (*cb)(struct osmtpd_ctx *,
const char *))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_TLS, incoming, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_begin(int incoming, void (*cb)(struct osmtpd_ctx *,
uint32_t))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_BEGIN, incoming, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_mail(int incoming, void (*cb)(struct osmtpd_ctx *,
uint32_t, const char *, enum osmtpd_status))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_MAIL, incoming, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_rcpt(int incoming, void (*cb)(struct osmtpd_ctx *,
uint32_t, const char *, enum osmtpd_status))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_RCPT, incoming, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_envelope(int incoming, void (*cb)(struct osmtpd_ctx *,
uint32_t, uint64_t))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_ENVELOPE, incoming,
0, (void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_data(int incoming, void (*cb)(struct osmtpd_ctx *,
uint32_t, enum osmtpd_status))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_DATA, incoming, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_commit(int incoming, void (*cb)(struct osmtpd_ctx *,
uint32_t, size_t))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_COMMIT, incoming, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_rollback(int incoming, void (*cb)(struct osmtpd_ctx *,
uint32_t))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_ROLLBACK, incoming,
0, (void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_client(int incoming, void (*cb)(struct osmtpd_ctx *,
const char *))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_PROTOCOL_CLIENT,
incoming, 0, (void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_server(int incoming, void (*cb)(struct osmtpd_ctx *,
const char *))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_PROTOCOL_SERVER,
incoming, 0, (void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_response(int incoming, void (*cb)(struct osmtpd_ctx *,
const char *))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_FILTER_RESPONSE,
incoming, 0, (void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_register_report_timeout(int incoming, void (*cb)(struct osmtpd_ctx *))
{
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TIMEOUT, incoming, 0,
(void *)cb);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_local_session(void *(*oncreate)(struct osmtpd_ctx *),
void (*ondelete)(struct osmtpd_ctx *, void *))
{
oncreatecb_session = oncreate;
ondeletecb_session = ondelete;
}
void
osmtpd_local_message(void *(*oncreate)(struct osmtpd_ctx *),
void (*ondelete)(struct osmtpd_ctx *, void *))
{
oncreatecb_message = oncreate;
ondeletecb_message = ondelete;
}
void
osmtpd_need(int lneeds)
{
needs |= lneeds;
}
static void
osmtpd_register_need(int incoming)
{
if (needs & (OSMTPD_NEED_SRC | OSMTPD_NEED_DST | OSMTPD_NEED_RDNS |
OSMTPD_NEED_FCRDNS))
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_CONNECT,
incoming, 1, NULL);
if (needs & OSMTPD_NEED_GREETING)
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_GREETING,
incoming, 1, NULL);
if (needs & OSMTPD_NEED_IDENTITY)
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_IDENTIFY,
incoming, 1, NULL);
if (needs & OSMTPD_NEED_CIPHERS)
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_TLS,
incoming, 1, NULL);
if (needs & OSMTPD_NEED_MSGID) {
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_BEGIN,
incoming, 1, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_ROLLBACK,
incoming, 0, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_COMMIT,
incoming, 0, NULL);
}
if (needs & OSMTPD_NEED_MAILFROM) {
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_MAIL,
incoming, 1, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_ROLLBACK,
incoming, 0, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_COMMIT,
incoming, 0, NULL);
}
if (needs & OSMTPD_NEED_RCPTTO) {
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_RCPT,
incoming, 1, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_ROLLBACK,
incoming, 0, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_COMMIT,
incoming, 0, NULL);
}
if (needs & OSMTPD_NEED_EVPID) {
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_ENVELOPE,
incoming, 1, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_ROLLBACK,
incoming, 0, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_TX_COMMIT,
incoming, 0, NULL);
}
osmtpd_register(OSMTPD_TYPE_REPORT, OSMTPD_PHASE_LINK_DISCONNECT,
incoming, 0, NULL);
}
void
osmtpd_run(void)
{
size_t i = 0;
int registered = 0;
struct event_base *evbase;
struct io *io_stdin;
struct osmtpd_callback *hidenity = NULL, *eidentity = NULL;
struct osmtpd_callback *ridentity = NULL;
evbase = event_init();
if ((io_stdin = io_new()) == NULL ||
(io_stdout = io_new()) == NULL)
osmtpd_err(1, "io_new");
io_set_nonblocking(STDIN_FILENO);
io_set_fd(io_stdin, STDIN_FILENO);
io_set_callback(io_stdin, osmtpd_newline, NULL);
io_set_read(io_stdin);
io_set_nonblocking(STDOUT_FILENO);
io_set_fd(io_stdout, STDOUT_FILENO);
io_set_callback(io_stdout, osmtpd_outevt, NULL);
io_set_write(io_stdout);
for (i = 0; i < NITEMS(osmtpd_callbacks); i++) {
if (osmtpd_callbacks[i].doregister) {
osmtpd_register_need(osmtpd_callbacks[i].incoming);
if (oncreatecb_message != NULL) {
osmtpd_register(OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_BEGIN,
osmtpd_callbacks[i].incoming, 0, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_ROLLBACK,
osmtpd_callbacks[i].incoming, 0, NULL);
osmtpd_register(OSMTPD_TYPE_REPORT,
OSMTPD_PHASE_TX_COMMIT,
osmtpd_callbacks[i].incoming, 0, NULL);
}
if (osmtpd_callbacks[i].type == OSMTPD_TYPE_FILTER &&
osmtpd_callbacks[i].phase == OSMTPD_PHASE_HELO)
hidenity = &(osmtpd_callbacks[i]);
if (osmtpd_callbacks[i].type == OSMTPD_TYPE_FILTER &&
osmtpd_callbacks[i].phase == OSMTPD_PHASE_EHLO)
eidentity = &(osmtpd_callbacks[i]);
if (osmtpd_callbacks[i].type == OSMTPD_TYPE_REPORT &&
osmtpd_callbacks[i].phase ==
OSMTPD_PHASE_LINK_IDENTIFY &&
osmtpd_callbacks[i].incoming == 1)
ridentity = &(osmtpd_callbacks[i]);
}
}
if (ridentity != NULL && ridentity->storereport) {
if (hidenity != NULL && hidenity->doregister)
hidenity->storereport = 1;
if (eidentity != NULL && eidentity->doregister)
eidentity->storereport = 1;
}
for (i = 0; i < NITEMS(osmtpd_callbacks); i++) {
if (osmtpd_callbacks[i].doregister) {
if (osmtpd_callbacks[i].cb != NULL)
registered = 1;
io_printf(io_stdout, "register|%s|smtp-%s|%s\n",
osmtpd_typetostr(osmtpd_callbacks[i].type),
osmtpd_callbacks[i].incoming ? "in" : "out",
osmtpd_phasetostr(osmtpd_callbacks[i].phase));
}
}
if (!registered)
osmtpd_errx(1, "No events registered");
io_printf(io_stdout, "register|ready\n");
ready = 1;
event_dispatch();
io_free(io_stdin);
io_free(io_stdout);
event_base_free(evbase);
}
__dead void
osmtpd_err(int eval, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fprintf(stderr, ": %s\n", strerror(errno));
exit(eval);
}
__dead void
osmtpd_errx(int eval, const char *fmt, ...)
{