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<h3>
Hal Murray pushed to branch master
at <a href="https://gitlab.com/NTPsec/ntpsec">NTPsec / ntpsec</a>
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<h4>
Commits:
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<ul>
<li>
<strong><a href="https://gitlab.com/NTPsec/ntpsec/commit/7383ad7d6b334eebe14ceba7e973396ff11ac37b">7383ad7d</a></strong>
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<span>by Hal Murray</span>
<i>at 2019-10-31T02:52:09Z</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Repair ugly crash from NTS client if broken ca filename
It used to exit so the operator would know there was a problem
rather than having to debug things after noticing it wasn't working.
But exit-ing from a non-main thread crashes lib_getbuf()
which adds a layer of confusion.
Also repair/tweak a couple of log messages.
</pre>
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<strong><a href="https://gitlab.com/NTPsec/ntpsec/commit/6225fc91d48fdc4801a31c054a9ce5d410b0b0cf">6225fc91</a></strong>
<div>
<span>by Hal Murray</span>
<i>at 2019-10-31T03:05:07Z</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Tweak devel/hacking to not call exit() in non main thread.
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<h4>2 changed files:</h4>
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devel/hacking.adoc
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ntpd/nts_client.c
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<h4>Changes:</h4>
<li id="6aad525e680265871b9320d085c3e3a37e9efa05">
<a href="https://gitlab.com/NTPsec/ntpsec/compare/22c04cdf37b95b5e71555589b952e803ee90631c...6225fc91d48fdc4801a31c054a9ce5d410b0b0cf#6aad525e680265871b9320d085c3e3a37e9efa05"><strong>devel/hacking.adoc</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -79,7 +79,10 @@ thread. One interesting area is msyslog. The DNS thread doesn't call msyslog.</td>
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<pre style="margin: 0;"> <span id="LC79" class="line" lang="plaintext">That was impractical for NTS, so msyslog is thread safe as of 2019-Apr.</span>
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<pre style="margin: 0;"> <span id="LC80" class="line" lang="plaintext">Beware of calling strerror() from non-main threads. Use ntp_strerror_r() into</span>
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<pre style="margin: 0;"> <span id="LC81" class="line" lang="plaintext">a buffer on the stack. Similarly, use socktoa_r() and sockporttoa_r() and</span>
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<pre style="margin: 0;">-<span id="LC82" class="line" lang="plaintext">don't call lib_getbuf() or refclock_name().</span>
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<pre style="margin: 0;">+<span id="LC82" class="line" lang="plaintext">don't call lib_getbuf(), refclock_name(), or exit(). [exit() calls</span>
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<pre style="margin: 0;">+<span id="LC83" class="line" lang="plaintext">the registered cleanup routines and some of them call lib_getbuf()</span>
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<pre style="margin: 0;">+<span id="LC84" class="line" lang="plaintext">which will crash (again) when called from a non-main thread. So</span>
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<pre style="margin: 0;">+<span id="LC85" class="line" lang="plaintext">avoid exit() if you can, but use it if you can't find a better way.]</span>
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<pre style="margin: 0;"> <span id="LC86" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC87" class="line" lang="plaintext">You *may* assume the clock_gettime(2) and clock_settime(2) calls, and</span>
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<pre style="margin: 0;"> <span id="LC88" class="line" lang="plaintext">the related getitimer(2)/setitimer(2), from POSIX-1.2008.</span>
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<li id="4188e892f41c12f300287a7e79074f6da4611f73">
<a href="https://gitlab.com/NTPsec/ntpsec/compare/22c04cdf37b95b5e71555589b952e803ee90631c...6225fc91d48fdc4801a31c054a9ce5d410b0b0cf#4188e892f41c12f300287a7e79074f6da4611f73"><strong>ntpd/nts_client.c</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="117" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -117,6 +117,8 @@ bool nts_probe(struct peer * peer) {</td>
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<pre style="margin: 0;"> <span id="LC117" class="line" lang="c"> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC118" class="line" lang="c"> <span class="n" style="color: #333;">SSL_CTX</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">ctx</span><span class="p">;</span> </span>
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<pre style="margin: 0;"> <span id="LC119" class="line" lang="c"> <span class="n" style="color: #333;">ctx</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">make_ssl_client_ctx</span><span class="p">(</span><span class="n" style="color: #333;">peer</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cfg</span><span class="p">.</span><span class="n" style="color: #333;">nts_cfg</span><span class="p">.</span><span class="n" style="color: #333;">ca</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC120" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="nb" style="color: #0086b3;">NULL</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">ctx</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC121" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="nb" style="color: #0086b3;">false</span><span class="p">;</span></span>
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<pre style="margin: 0;"> <span id="LC122" class="line" lang="c"> <span class="n" style="color: #333;">ssl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">SSL_new</span><span class="p">(</span><span class="n" style="color: #333;">ctx</span><span class="p">);</span></span>
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<pre style="margin: 0;"> <span id="LC123" class="line" lang="c"> <span class="n" style="color: #333;">SSL_CTX_free</span><span class="p">(</span><span class="n" style="color: #333;">ctx</span><span class="p">);</span></span>
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<pre style="margin: 0;"> <span id="LC124" class="line" lang="c"> <span class="p">}</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="215" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -213,7 +215,7 @@ SSL_CTX* make_ssl_client_ctx(const char * filename) {</td>
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213
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215
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<pre style="margin: 0;"> <span id="LC215" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* Happens if no ciphers */</span></span>
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214
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216
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<pre style="margin: 0;"> <span id="LC216" class="line" lang="c"> <span class="n" style="color: #333;">msyslog</span><span class="p">(</span><span class="n" style="color: #333;">LOG_ERR</span><span class="p">,</span> <span class="s" style="color: #d14;">"NTSc: NULL ctx"</span><span class="p">);</span></span>
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215
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217
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<pre style="margin: 0;"> <span id="LC217" class="line" lang="c"> <span class="n" style="color: #333;">nts_log_ssl_error</span><span class="p">();</span></span>
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216
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<pre style="margin: 0;">-<span id="LC216" class="line" lang="c"> <span class="n" style="color: #333;"><span class="idiff left">exit</span></span><span class="p"><span class="idiff">(</span></span><span class="mi" style="color: #099;"><span class="idiff">1</span></span><span class="p"><span class="idiff right">)</span>;</span></span>
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218
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<pre style="margin: 0;">+<span id="LC218" class="line" lang="c"> <span class="k" style="font-weight: 600;"><span class="idiff left">return</span></span><span class="idiff"> </span><span class="nb" style="color: #0086b3;"><span class="idiff right">NULL</span></span><span class="p">;</span></span>
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217
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219
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<pre style="margin: 0;"> <span id="LC219" class="line" lang="c"> <span class="p">}</span></span>
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218
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220
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<pre style="margin: 0;"> <span id="LC220" class="line" lang="c"></span>
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219
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221
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<pre style="margin: 0;"> <span id="LC221" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#if (OPENSSL_VERSION_NUMBER > 0x1000200fL)</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="233" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="235" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -233,7 +235,8 @@ SSL_CTX* make_ssl_client_ctx(const char * filename) {</td>
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233
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235
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<pre style="margin: 0;"> <span id="LC235" class="line" lang="c"></span>
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234
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236
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<pre style="margin: 0;"> <span id="LC236" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">ok</span><span class="p">)</span> <span class="p">{</span></span>
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235
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237
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<pre style="margin: 0;"> <span id="LC237" class="line" lang="c"> <span class="n" style="color: #333;">msyslog</span><span class="p">(</span><span class="n" style="color: #333;">LOG_ERR</span><span class="p">,</span> <span class="s" style="color: #d14;">"NTSc: Troubles setting up client SSL CTX"</span><span class="p">);</span></span>
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236
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<pre style="margin: 0;">-<span id="LC236" class="line" lang="c"> <span class="n" style="color: #333;">exit</span><span class="p">(</span><span class="mi" style="color: #099;">1</span><span class="p">);</span></span>
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238
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<pre style="margin: 0;">+<span id="LC238" class="line" lang="c"> <span class="n" style="color: #333;">SSL_CTX_free</span><span class="p">(</span><span class="n" style="color: #333;">ctx</span><span class="p">);</span></span>
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239
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<pre style="margin: 0;">+<span id="LC239" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">;</span></span>
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237
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240
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<pre style="margin: 0;"> <span id="LC240" class="line" lang="c"> <span class="p">};</span></span>
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<pre style="margin: 0;"> <span id="LC241" class="line" lang="c"></span>
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239
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<pre style="margin: 0;"> <span id="LC242" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">ctx</span><span class="p">;</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="687" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="690" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -687,7 +690,7 @@ bool nts_set_cert_search(SSL_CTX *ctx, const char *filename) {</td>
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687
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690
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<pre style="margin: 0;"> <span id="LC690" class="line" lang="c"> <span class="p">}</span></span>
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688
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691
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<pre style="margin: 0;"> <span id="LC691" class="line" lang="c"> <span class="n" style="color: #333;">ntp_strerror_r</span><span class="p">(</span><span class="n" style="color: #333;">errno</span><span class="p">,</span> <span class="n" style="color: #333;">errbuf</span><span class="p">,</span> <span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="n" style="color: #333;">errbuf</span><span class="p">));</span></span>
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689
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692
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<pre style="margin: 0;"> <span id="LC692" class="line" lang="c"> <span class="n" style="color: #333;">msyslog</span><span class="p">(</span><span class="n" style="color: #333;">LOG_ERR</span><span class="p">,</span> <span class="s" style="color: #d14;">"NTSc: can't stat cert dir/file: %s, %s"</span><span class="p">,</span></span>
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690
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<pre style="margin: 0;">-<span id="LC690" class="line" lang="c"> <span class="n" style="color: #333;"><span class="idiff left">ntsconfig</span></span><span class="p"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff right">ca</span></span><span class="p">,</span> <span class="n" style="color: #333;">errbuf</span><span class="p">);</span></span>
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693
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<pre style="margin: 0;">+<span id="LC693" class="line" lang="c"> <span class="n" style="color: #333;"><span class="idiff left right">filename</span></span><span class="p">,</span> <span class="n" style="color: #333;">errbuf</span><span class="p">);</span></span>
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691
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<pre style="margin: 0;"> <span id="LC694" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="nb" style="color: #0086b3;">false</span><span class="p">;</span></span>
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692
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695
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<pre style="margin: 0;"> <span id="LC695" class="line" lang="c"><span class="p">}</span></span>
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696
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<pre style="margin: 0;"> <span id="LC696" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/* The -4/-6 option is used for both the NTS-KE server and the NTP server.</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="707" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="710" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -707,7 +710,7 @@ bool nts_server_lookup(char *server, sockaddr_u *addr, int af) {</td>
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707
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710
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<pre style="margin: 0;"> <span id="LC710" class="line" lang="c"></span>
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708
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711
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<pre style="margin: 0;"> <span id="LC711" class="line" lang="c"> <span class="n" style="color: #333;">gai_rc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">getaddrinfo</span><span class="p">(</span><span class="n" style="color: #333;">server</span><span class="p">,</span> <span class="s" style="color: #d14;">"123"</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">hints</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">answer</span><span class="p">);</span></span>
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709
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712
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<pre style="margin: 0;"> <span id="LC712" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">!=</span> <span class="n" style="color: #333;">gai_rc</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">-<span id="LC710" class="line" lang="c"> <span class="n" style="color: #333;">msyslog</span><span class="p">(</span><span class="n" style="color: #333;">LOG_INFO</span><span class="p">,</span> <span class="s" style="color: #d14;">"NTSc: <span class="idiff left right">nts_probe: </span>DNS error trying to lookup %s: %d, %s"</span><span class="p">,</span></span>
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713
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<pre style="margin: 0;">+<span id="LC713" class="line" lang="c"> <span class="n" style="color: #333;">msyslog</span><span class="p">(</span><span class="n" style="color: #333;">LOG_INFO</span><span class="p">,</span> <span class="s" style="color: #d14;">"NTSc: DNS error trying to lookup %s: %d, %s"</span><span class="p">,</span></span>
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711
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714
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<pre style="margin: 0;"> <span id="LC714" class="line" lang="c"> <span class="n" style="color: #333;">server</span><span class="p">,</span> <span class="n" style="color: #333;">gai_rc</span><span class="p">,</span> <span class="n" style="color: #333;">gai_strerror</span><span class="p">(</span><span class="n" style="color: #333;">gai_rc</span><span class="p">));</span></span>
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712
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<pre style="margin: 0;"> <span id="LC715" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="nb" style="color: #0086b3;">false</span><span class="p">;</span></span>
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716
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<pre style="margin: 0;"> <span id="LC716" class="line" lang="c"> <span class="p">}</span></span>
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