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/*
* Copyright (c) 2021 Proofpoint, Inc. and its suppliers.
* All rights reserved.
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the sendmail distribution.
*/
#ifndef LIBSM_NOTIFY_H
#define LIBSM_NOTIFY_H
#if SM_NOTIFY_DEBUG
#define SM_DBG(p) fprintf p
#else
#define SM_DBG(p)
#endif
/* microseconds */
#define SM_MICROS 1000000L
#define SM_MICROS2TVAL(tmo, tval, timeout) \
do \
{ \
if (tmo < 0) \
tval = NULL; \
else \
{ \
timeout.tv_sec = (long) (tmo / SM_MICROS); \
timeout.tv_usec = tmo % SM_MICROS; \
tval = &timeout; \
} \
} while (0)
#define MAX_NETSTR 1024
#define NETSTRPRE 5
/* flow through code, be careful how to use! */
#define RDNETSTR(rc, fd, SM_NOTIFY_EOF) \
if ((rc) <= 0) \
{ \
SM_DBG((stderr, "pid=%ld, select=%d, e=%d\n", (long)getpid(), (rc), save_errno)); \
return -ETIMEDOUT; \
} \
\
/* bogus... need to check again? */ \
if (!FD_ISSET(fd, &readfds)) \
{ \
SM_DBG((stderr, "pid=%ld, fd=%d, isset=false\n", (long)getpid(), fd)); \
return -ETIMEDOUT; \
} \
r = read(fd, buf, NETSTRPRE); \
if (0 == r) \
{ \
SM_DBG((stderr, "pid=%ld, fd=%d, read1=EOF, e=%d\n", (long)getpid(), fd, errno)); \
SM_NOTIFY_EOF; \
return r; \
} \
if (NETSTRPRE != r) \
{ \
SM_DBG((stderr, "pid=%ld, fd=%d, read1=%d, e=%d\n", (long)getpid(), fd, r, errno)); \
return -1; /* ??? */ \
} \
\
if (sm_io_sscanf(buf, "%4u:", &len) != 1) \
{ \
SM_DBG((stderr, "pid=%ld, scanf, e=%d\n", (long)getpid(), errno)); \
return -EINVAL; /* ??? */ \
} \
if (len >= MAX_NETSTR) \
{ \
SM_DBG((stderr, "pid=%ld, 1: len=%d\n", (long)getpid(), len)); \
return -E2BIG; /* ??? */ \
} \
if (len >= buflen - 1) \
{ \
SM_DBG((stderr, "pid=%ld, 2: len=%d\n", (long)getpid(), len)); \
return -E2BIG; /* ??? */ \
} \
if (len <= 0) \
{ \
SM_DBG((stderr, "pid=%ld, 3: len=%d\n", (long)getpid(), len)); \
return -EINVAL; /* ??? */ \
} \
r = read(fd, buf, len + 1); \
save_errno = errno; \
SM_DBG((stderr, "pid=%ld, fd=%d, read=%d, len=%d, e=%d\n", (long)getpid(), fd, r, len+1, save_errno)); \
if (r == 0) \
{ \
SM_DBG((stderr, "pid=%ld, fd=%d, read2=%d, e=%d\n", (long)getpid(), fd, r, save_errno)); \
return -1; /* ??? */ \
} \
if (r < 0) \
{ \
SM_DBG((stderr, "pid=%ld, fd=%d, read3=%d, e=%d\n", (long)getpid(), fd, r, save_errno)); \
return -save_errno; \
} \
if (len + 1 != r) \
{ \
SM_DBG((stderr, "pid=%ld, fd=%d, read4=%d, len=%d\n", (long)getpid(), fd, r, len)); \
return -1; /* ??? */ \
} \
if (buf[len] != ',') \
{ \
SM_DBG((stderr, "pid=%ld, fd=%d, read5=%d, f=%d\n", (long)getpid(), fd, r, buf[len])); \
return -EINVAL; /* ??? */ \
} \
buf[len] = '\0'; \
return r
#endif /* ! LIBSM_MSG_H */
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