Remaining linebuffer size (i.e., how many characters snprintf() is
allowed to still add) should be `SNBUFFERSIZE-strlen(linebuffer)`,
rather than `SNBUFFERSIZE-strlen(b)`, where b is the pointer to the
*END* of linebuffer (and thus strlen(b) will always be 0, always
telling snprintf() that it can still print SNBUFFERSIZE characters,
even when linebuffer is already partially or totally filled.
---
Re-sending (after subscribing to iperf-users) b/c I need a mailing list
link to reference in Bugzilla :)
src/ReportOutputs.c | 50 ++++++++++++++++++++++-----------------------
1 file changed, 25 insertions(+), 25 deletions(-)
diff --git a/src/ReportOutputs.c b/src/ReportOutputs.c
index 463aa913..6a03cb22 100644
--- a/src/ReportOutputs.c
+++ b/src/ReportOutputs.c
@@ -2638,7 +2638,7 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
int n;
#if HAVE_DECL_TCP_WINDOW_CLAMP
if (!isUDP(report->common) && isRxClamp(report->common)) {
- n = snprintf(b, (SNBUFFERSIZE-strlen(b)), " (%s%d)", "clamp=",
report->common->ClampSize);
+ n = snprintf(b, (SNBUFFERSIZE-strlen(linebuffer)), " (%s%d)", "clamp=",
report->common->ClampSize);
FAIL_exit((n < 0), "fail append clamp");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
clamp");
b += n;
@@ -2646,57 +2646,57 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
#endif
#if HAVE_DECL_TCP_NOTSENT_LOWAT
if (!isUDP(report->common) && (report->common->socket > 0) &&
isWritePrefetch(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (%s%d)", "prefetch=",
report->common->WritePrefetch);
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (%s%d)",
"prefetch=", report->common->WritePrefetch);
FAIL_exit((n < 0), "fail append prefetch");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
prefetch");
b += n;
}
#endif
if (isIsochronous(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (isoch)");
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (isoch)");
FAIL_exit((n < 0), "fail append isoch");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
isoch");
b += n;
}
if (isPeriodicBurst(report->common) && (report->common->ThreadMode !=
kMode_Client) && !isServerReverse(report->common)) {
#if HAVE_FASTSAMPLING
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (burst-period=%0.4fs)", (1.0
/ report->common->FPS));
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), "
(burst-period=%0.4fs)", (1.0 / report->common->FPS));
#else
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (burst-period=%0.2fs)", (1.0
/ report->common->FPS));
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), "
(burst-period=%0.2fs)", (1.0 / report->common->FPS));
#endif
FAIL_exit((n < 0), "fail append burst");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
burst");
b += n;
}
if (isFullDuplex(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (full-duplex)");
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (full-duplex)");
FAIL_exit((n < 0), "fail append duplex");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
duplex");
b += n;
} else if (isServerReverse(report->common) || isReverse(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (reverse)");
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (reverse)");
FAIL_exit((n < 0), "fail append reverse");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
reverse");
b += n;
if (isFQPacing(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (fq)");
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (fq)");
FAIL_exit((n < 0), "fail append fq");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
fq");
b += n;
}
}
if (isTxStartTime(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (epoch-start)");
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (epoch-start)");
FAIL_exit((n < 0), "fail append epoch");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
epoch");
b += n;
}
if (isBounceBack(report->common)) {
if (isTcpQuickAck(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (bb w/quickack
req/reply/hold=%d/%d/%d)", report->common->bbsize, \
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (bb w/quickack
req/reply/hold=%d/%d/%d)", report->common->bbsize, \
report->common->bbreplysize, report->common->bbhold);
} else {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (bb
req/reply/hold=%d/%d/%d)", report->common->bbsize, \
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (bb
req/reply/hold=%d/%d/%d)", report->common->bbsize, \
report->common->bbreplysize, report->common->bbhold);
}
FAIL_exit((n < 0), "fail append bb");
@@ -2704,19 +2704,19 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
b += n;
}
if (isL2LengthCheck(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (l2mode)");
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (l2mode)");
FAIL_exit((n < 0), "fail append l2");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow l2");
b += n;
}
if (isUDP(report->common) && isNoUDPfin(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (no-udp-fin)");
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (no-udp-fin)");
FAIL_exit((n < 0), "fail append ufin");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow ufin");
b += n;
}
if (isTripTime(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (trip-times)");
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (trip-times)");
FAIL_exit((n < 0), "fail append tt");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow tt");
b += n;
@@ -2731,7 +2731,7 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
cca[len - 1] = '\0';
}
if (rc != SOCKET_ERROR) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (%s)", cca);
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (%s)", cca);
FAIL_exit((n < 0), "fail append cca");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer
overflow cca");
b += n;
@@ -2742,12 +2742,12 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
if (isOverrideTOS(report->common)) {
n = 0;
if (isFullDuplex(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (tos
rx/tx=0x%x,dscp=%d,ecn=%d, /0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (tos
rx/tx=0x%x,dscp=%d,ecn=%d, /0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
DSCP_VALUE(report->common->TOS),
ECN_VALUE(report->common->TOS), \
report->common->RTOS, \
DSCP_VALUE(report->common->RTOS),
ECN_VALUE(report->common->RTOS));
} else if (isReverse(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (tos
rx=0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (tos
rx=0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
DSCP_VALUE(report->common->TOS),
ECN_VALUE(report->common->TOS));
}
FAIL_exit((n < 0 ), "fail append o-tos");
@@ -2755,15 +2755,15 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
b += n;
} else if (report->common->TOS) {
if (isFullDuplex(report->common) || isBounceBack(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (tos
rx/tx=0x%x,dscp=%d,ecn=%d/0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (tos
rx/tx=0x%x,dscp=%d,ecn=%d/0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
DSCP_VALUE(report->common->TOS),
ECN_VALUE(report->common->TOS), \
report->common->TOS, \
DSCP_VALUE(report->common->TOS),
ECN_VALUE(report->common->TOS));
} else if (isReverse(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (tos
rx=0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (tos
rx=0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
DSCP_VALUE(report->common->TOS),
ECN_VALUE(report->common->TOS));
} else {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (tos
tx=0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (tos
tx=0x%x,dscp=%d,ecn=%d)", report->common->TOS, \
DSCP_VALUE(report->common->TOS),
ECN_VALUE(report->common->TOS));
}
FAIL_exit((n < 0), "fail append tos");
@@ -2772,7 +2772,7 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
}
if (isEnhanced(report->common) || isPeerVerDetect(report->common)) {
if (report->peerversion[0] != '\0') {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), "%s", report->peerversion);
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), "%s",
report->peerversion);
FAIL_exit((n < 0), "fail append peer ver");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
peer ver");
b += n;
@@ -2780,7 +2780,7 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
}
#if HAVE_DECL_TCP_QUICKACK
if (isTcpQuickAck(report->common) && !isBounceBack(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (qack)");
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (qack)");
FAIL_exit((n < 0), "fail append peer qack");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow peer
qack");
b += n;
@@ -2788,7 +2788,7 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
#endif
#if HAVE_TCP_STATS
if (!isUDP(report->common) && (report->tcpinitstats.isValid) &&
isEnhanced(report->common)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (icwnd/mss/irtt=%" PRIdMAX
"/%" PRIuLEAST32 "/%" PRIuLEAST32 ")", \
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (icwnd/mss/irtt=%"
PRIdMAX "/%" PRIuLEAST32 "/%" PRIuLEAST32 ")", \
report->tcpinitstats.cwnd,
report->tcpinitstats.mss_negotiated, report->tcpinitstats.rtt);
FAIL_exit((n < 0), "fail append tcpstats");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
tcpstats");
@@ -2802,9 +2802,9 @@ void reporter_print_connection_report (struct
ConnectionInfo *report) {
iperf_formattime(timestr, sizeof(timestr),
report->connect_timestamp, \
(isEnhanced(report->common) ? Milliseconds :
Seconds), isUTC(report->common), YearThruSecTZ);
if (!isUDP(report->common) && (report->common->ThreadMode ==
kMode_Client) && (report->tcpinitstats.connecttime > 0)) {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " (ct=%4.2f ms) on %s",
report->tcpinitstats.connecttime, timestr);
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " (ct=%4.2f
ms) on %s", report->tcpinitstats.connecttime, timestr);
} else {
- n = snprintf(b, SNBUFFERSIZE-strlen(b), " on %s", timestr);
+ n = snprintf(b, SNBUFFERSIZE-strlen(linebuffer), " on %s",
timestr);
}
FAIL_exit((n < 0), "fail append ct");
FAIL_exit((strlen(linebuffer) >= SNBUFFERSIZE), "buffer overflow
ct");
--
2.47.0
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