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enhanced qse_addtime() and qse_subtime() to detect overflow/underflow

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changed qse_mbsntonwad()/qse_wcsntonwad() to accept a unix path beginning with a slash.
changed the nwad to string conversion function to not append @ if a unix socket address begins with a slash
This commit is contained in:
hyung-hwan 2020-09-02 20:34:11 +00:00
parent db0457fe73
commit c24d198cbf
6 changed files with 133 additions and 24 deletions
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2
qse/include/qse/cmn/time.h
View File

@ -93,7 +93,7 @@
#define QSE_SEC_TO_USEC(sec) ((sec) * QSE_USECS_PER_SEC)
#define QSE_USEC_TO_SEC(usec) ((usec) / QSE_USECS_PER_SEC)
typedef qse_long_t qse_ntime_sec_t;
typedef qse_int64_t qse_ntime_sec_t;
typedef qse_int32_t qse_ntime_nsec_t;
/**

106
qse/lib/cmn/time.c
View File

@ -619,14 +619,64 @@ void qse_addtime (const qse_ntime_t* x, const qse_ntime_t* y, qse_ntime_t* z)
QSE_ASSERT (x->nsec >= 0 && x->nsec < QSE_NSECS_PER_SEC);
QSE_ASSERT (y->nsec >= 0 && y->nsec < QSE_NSECS_PER_SEC);
#if 0
z->sec = x->sec + y->sec;
z->nsec = x->nsec + y->nsec;
if (z->nsec >= QSE_NSECS_PER_SEC)
while (z->nsec >= QSE_NSECS_PER_SEC)
{
z->sec = z->sec + 1;
z->nsec = z->nsec - QSE_NSECS_PER_SEC;
}
#else
qse_ntime_sec_t xs, ys;
qse_ntime_nsec_t ns;
ns = x->nsec + y->nsec;
if (ns >= QSE_NSECS_PER_SEC)
{
ns = ns - QSE_NSECS_PER_SEC;
if (x->sec == QSE_TYPE_MAX(qse_ntime_sec_t))
{
if (y->sec >= 0) goto overflow;
xs = x->sec;
ys = y->sec + 1; /* this won't overflow */
}
else
{
xs = x->sec + 1; /* this won't overflow */
ys = y->sec;
}
}
else
{
xs = x->sec;
ys = y->sec;
}
if ((ys >= 1 && xs > QSE_TYPE_MAX(qse_ntime_sec_t) - ys) ||
(ys <= -1 && xs < QSE_TYPE_MIN(qse_ntime_sec_t) - ys))
{
if (xs >= 0)
{
overflow:
xs = QSE_TYPE_MAX(qse_ntime_sec_t);
ns = QSE_NSECS_PER_SEC - 1;
}
else
{
xs = QSE_TYPE_MIN(qse_ntime_sec_t);
ns = 0;
}
}
else
{
xs = xs + ys;
}
z->sec = xs;
z->nsec = ns;
#endif
}
void qse_subtime (const qse_ntime_t* x, const qse_ntime_t* y, qse_ntime_t* z)
@ -634,18 +684,66 @@ void qse_subtime (const qse_ntime_t* x, const qse_ntime_t* y, qse_ntime_t* z)
QSE_ASSERT (x->nsec >= 0 && x->nsec < QSE_NSECS_PER_SEC);
QSE_ASSERT (y->nsec >= 0 && y->nsec < QSE_NSECS_PER_SEC);
#if 0
z->sec = x->sec - y->sec;
z->nsec = x->nsec - y->nsec;
if (z->nsec < 0)
while (z->nsec < 0)
{
z->sec = z->sec - 1;
z->nsec = z->nsec + QSE_NSECS_PER_SEC;
}
#else
qse_ntime_sec_t xs, ys;
qse_ntime_nsec_t ns;
ns = x->nsec - y->nsec;
if (ns < 0)
{
ns = ns + QSE_NSECS_PER_SEC;
if (x->sec == QSE_TYPE_MIN(qse_ntime_sec_t))
{
if (y->sec <= 0) goto underflow;
xs = x->sec;
ys = y->sec - 1; /* this won't underflow */
}
else
{
xs = x->sec - 1; /* this won't underflow */
ys = y->sec;
}
}
else
{
xs = x->sec;
ys = y->sec;
}
if ((ys >= 1 && xs < QSE_TYPE_MIN(qse_ntime_sec_t) + ys) ||
(ys <= -1 && xs > QSE_TYPE_MAX(qse_ntime_sec_t) + ys))
{
if (xs >= 0)
{
xs = QSE_TYPE_MAX(qse_ntime_sec_t);
ns = QSE_NSECS_PER_SEC - 1;
}
else
{
underflow:
xs = QSE_TYPE_MIN(qse_ntime_sec_t);
ns = 0;
}
}
else
{
xs = xs - ys;
}
z->sec = xs;
z->nsec = ns;
#endif
}
int qse_mbs_to_ntime (const qse_mchar_t* text, qse_ntime_t* ntime)
{
const qse_mchar_t* p = text, * cp;

6
qse/lib/si/Socket.cpp
View File

@ -356,13 +356,14 @@ int Socket::finiConnectNB () QSE_CPP_NOEXCEPT
{
QSE_ASSERT (qse_is_sck_valid(this->handle));
if (qse_fini_sck_conn(this->handle) <= -1)
int n;
if ((n = qse_fini_sck_conn(this->handle)) <= -1)
{
this->setErrorFmt (syserr_to_errnum(errno), QSE_T("%hs"), strerror(errno));
return -1;
}
return 0;
return n;
}
@ -522,6 +523,7 @@ int Socket::accept (Socket* newsck, SocketAddress* newaddr, int traits) QSE_CPP_
accept_done:
newsck->handle = newfd;
newsck->domain = this->domain; // the new socket inherits the listener's domain.
return 0;
}

3
qse/lib/si/SocketAddress.cpp
View File

@ -289,7 +289,7 @@ int SocketAddress::set (const qse_wchar_t* str, qse_size_t len) QSE_CPP_NOEXCEPT
/*
* NOTICE:
* When host is "", the address is resolved to localhost.
* When host is XP_NULL, the address is resolved to INADDR_ANY
* When host is QSE_NULL, the address is resolved to INADDR_ANY
* or IN6ADDR_ANY_INIT depending on the address family.
*/
int SocketAddress::resolve (const qse_mchar_t* service, const qse_mchar_t* host, int family, int type) QSE_CPP_NOEXCEPT
@ -354,6 +354,7 @@ int SocketAddress::resolve (const qse_wchar_t* service, const qse_wchar_t* host,
if (qse_wcstombs(service, &wcslen, mb_service, &mbslen) <= -1) return -1;
p_service = mb_service;
}
x = ::getaddrinfo(p_host, p_service, &hints, &info);
if (x != 0) return -1;

4
qse/lib/si/mux.c
View File

@ -626,7 +626,7 @@ int qse_mux_insert (qse_mux_t* mux, const qse_mux_evt_t* evt)
if (!mux->me.ptr[evt->hnd])
{
mux->me.ptr[evt->hnd] = QSE_MMGR_ALLOC (mux->mmgr, QSE_SIZEOF(*evt));
mux->me.ptr[evt->hnd] = QSE_MMGR_ALLOC(mux->mmgr, QSE_SIZEOF(*evt));
if (!mux->me.ptr[evt->hnd])
{
mux->errnum = QSE_MUX_ENOMEM;
@ -819,7 +819,7 @@ done:
return -1;
}
if (epoll_ctl (mux->fd, EPOLL_CTL_DEL, evt->hnd, QSE_NULL) <= -1)
if (epoll_ctl(mux->fd, EPOLL_CTL_DEL, evt->hnd, QSE_NULL) <= -1)
{
mux->errnum = skerr_to_errnum(errno);
return -1;

32
qse/lib/si/nwad.c
View File

@ -135,15 +135,16 @@ int qse_mbsntonwad (const qse_mchar_t* str, qse_size_t len, qse_nwad_t* nwad)
if (p >= end) return -1;
if (*p == QSE_MT('@') && len >= 2)
if ((*p == '@' && len >= 2) || *p == '/') // with @, you can specify a relative path
{
/* the string begins with @. it's a local name */
/* the string begins with @. it's a local name excluding @.
* if it begins with /, it's also a local name */
#if defined(QSE_CHAR_IS_MCHAR)
qse_mbsxncpy (tmpad.u.local.path, QSE_COUNTOF(tmpad.u.local.path), p + 1, len - 1);
qse_mbsxncpy (tmpad.u.local.path, QSE_COUNTOF(tmpad.u.local.path), p + (*p == '@'), len - (*p == '@'));
#else
qse_size_t mbslen = len - 1;
qse_size_t mbslen = len - (*p == '@');
qse_size_t wcslen = QSE_COUNTOF(tmpad.u.local.path) - 1;
if (qse_mbsntowcsn (p + 1, &mbslen, tmpad.u.local.path, &wcslen) <= -1) return -1;
if (qse_mbsntowcsn(p + (*p == '@'), &mbslen, tmpad.u.local.path, &wcslen) <= -1) return -1;
tmpad.u.local.path[wcslen] = QSE_WT('\0');
#endif
@ -317,16 +318,17 @@ int qse_wcsntonwad (const qse_wchar_t* str, qse_size_t len, qse_nwad_t* nwad)
if (p >= end) return -1;
if (*p == QSE_WT('@') && len >= 2)
if ((*p == '@' && len >= 2) || *p == '/') // with @, you can specify a relative path
{
/* the string begins with @. it's a local name */
/* the string begins with @. it's a local name excluding @.
* if it begins with /, it's also a local name */
#if defined(QSE_CHAR_IS_MCHAR)
qse_size_t wcslen = len - 1;
qse_size_t mbslen = QSE_COUNTOF(tmpad.u.local.path) - 1;
if (qse_wcsntombsn (p + 1, &wcslen, tmpad.u.local.path, &mbslen) <= -1) return -1;
qse_size_t mbslen = QSE_COUNTOF(tmpad.u.local.path) - (*p == '@');
if (qse_wcsntombsn(p + (*p == '@'), &wcslen, tmpad.u.local.path, &mbslen) <= -1) return -1;
tmpad.u.local.path[mbslen] = QSE_MT('\0');
#else
qse_wcsxncpy (tmpad.u.local.path, QSE_COUNTOF(tmpad.u.local.path), p + 1, len - 1);
qse_wcsxncpy (tmpad.u.local.path, QSE_COUNTOF(tmpad.u.local.path), p + (*p == '@'), len - (*p == '@'));
#endif
tmpad.type = QSE_NWAD_LOCAL;
@ -582,9 +584,12 @@ qse_size_t qse_nwadtombs (
case QSE_NWAD_LOCAL:
if (flags & QSE_NWADTOMBS_ADDR)
{
if (nwad->u.local.path[0] != '/')
{
if (xlen + 1 >= len) goto done;
buf[xlen++] = QSE_MT('@');
buf[xlen++] = '@';
}
#if defined(QSE_CHAR_IS_MCHAR)
if (xlen + 1 >= len) goto done;
@ -711,9 +716,12 @@ qse_size_t qse_nwadtowcs (
case QSE_NWAD_LOCAL:
if (flags & QSE_NWADTOMBS_ADDR)
{
if (nwad->u.local.path[0] != '/')
{
if (xlen + 1 >= len) goto done;
buf[xlen++] = QSE_WT('@');
buf[xlen++] = '@';
}
#if defined(QSE_CHAR_IS_MCHAR)
if (xlen + 1 >= len) goto done;