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Check if ifa_addr field is null.

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This field can be null. See e.g. https://man7.org/linux/man-pages/man3/getifaddrs.3.html

Bug: webrtc:12523
Change-Id: I63ba297d0c57b3b70c545d1434716094d8ce20a4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/212601
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33517}
This commit is contained in:
Björn Terelius
2021-03-19 15:15:18 +01:00
committed by Commit Bot
parent 76b51e21bc
commit ebd20109f0
1 changed files with 2 additions and 2 deletions
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4
rtc_base/net_helpers.cc
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@ -53,7 +53,7 @@ bool HasIPv4Enabled() {
return false;
}
for (struct ifaddrs* cur = ifa; cur != nullptr; cur = cur->ifa_next) {
if (cur->ifa_addr->sa_family == AF_INET) {
if (cur->ifa_addr != nullptr && cur->ifa_addr->sa_family == AF_INET) {
has_ipv4 = true;
break;
}
@ -112,7 +112,7 @@ bool HasIPv6Enabled() {
return false;
}
for (struct ifaddrs* cur = ifa; cur != nullptr; cur = cur->ifa_next) {
if (cur->ifa_addr->sa_family == AF_INET6) {
if (cur->ifa_addr != nullptr && cur->ifa_addr->sa_family == AF_INET6) {
has_ipv6 = true;
break;
}