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FC Stegerman pushed to branch master at <a href="https://salsa.debian.org/reproducible-builds/reproducible-website">Reproducible Builds / reproducible-website</a>
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<h4 style="margin-top: 10px; margin-bottom: 10px;">
Commits:
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<ul>
<li>
<strong style="font-weight: bold;"><a href="https://salsa.debian.org/reproducible-builds/reproducible-website/-/commit/f162f352a068ca27db72846e660e6f98806207e9">f162f352</a></strong>
<div>
<span> by FC Stegerman </span> <i> at 2023-02-03T02:00:15+01:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>2023-01: re-add Threema & zipalign links, improve .profm bit
</pre>
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1 changed file:
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<li class="file-stats">
<a href="#c50982c5d42b0f4f7ec0e0c78bf0673803cd7bcb">
_reports/2023-01.md
</a>
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<h4 style="margin-top: 10px; margin-bottom: 10px;">
Changes:
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<li id="c50982c5d42b0f4f7ec0e0c78bf0673803cd7bcb">
<a href="https://salsa.debian.org/reproducible-builds/reproducible-website/-/commit/f162f352a068ca27db72846e660e6f98806207e9#c50982c5d42b0f4f7ec0e0c78bf0673803cd7bcb"><strong style="font-weight: bold;">_reports/2023-01.md</strong></a>
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<td class="line_content match" style="color: rgba(0,0,0,0.3); padding: inherit;" bgcolor="#fafafa">@@ -77,12 +77,14 @@ In addition:</td>
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC77" class="line" lang="markdown"></span>
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<td class="old_line diff-line-num" data-linenumber="78" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="new_line diff-line-num" data-linenumber="78" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC78" class="line" lang="markdown"><span class="p">*</span> F-Droid added 13 apps published with reproducible builds this month. <span class="p">[</span><span class="nv" style="color: #008080;">[…</span><span class="p">](</span><span class="sx" style="color: #d14;">https://gitlab.com/fdroid/fdroiddata/-/issues/2844</span><span class="p">)</span>]</span>
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<td class="old_line diff-line-num" data-linenumber="79" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="new_line diff-line-num" data-linenumber="79" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC79" class="line" lang="markdown"></span>
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<td class="old_line diff-line-num old" data-linenumber="80" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
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<td class="new_line diff-line-num old" data-linenumber="80" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
 
</td>
<td class="line_content old" style="padding: inherit;" bgcolor="#fbe9eb"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>-<span id="LC80" class="line" lang="markdown"><span class="p">*</span> FC Stegerman outlined a bug where <span class="p">[</span><span class="nv" style="color: #008080;">`baseline.profm` files are nondeterministic</span><span class="p">](</span><span class="sx" style="color: #d14;">https://gist.github.com/obfusk/61046e09cee352ae6dd109911534b12e</span><span class="p">)</span>. As they note, this issue <span class="p">[</span><span class="nv" style="color: #008080;">has now been fixed</span><span class="p">](</span><span class="sx" style="color: #d14;">https://android.googlesource.com/platform/tools/base/+/2f2c6b30b55e18e2672edf5ee8e8e583be759d3e</span><span class="p">)</span> but the fix is not yet part of an official <span class="p">[</span><span class="nv" style="color: #008080;">Android Gradle plugin release</span><span class="p">](</span><span class="sx" style="color: #d14;">https://developer.android.com/studio/releases/gradle-plugin</span><span class="p">)</span>.</span>
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<td class="old_line diff-line-num new" data-linenumber="81" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="new_line diff-line-num new" data-linenumber="80" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC80" class="line" lang="markdown"><span class="p">*</span> FC Stegerman outlined a bug where <span class="p">[</span><span class="nv" style="color: #008080;">`baseline.profm` files are nondeterministic</span><span class="p">](</span><span class="sx" style="color: #d14;">https://gist.github.com/obfusk/61046e09cee352ae6dd109911534b12e</span><span class="p">)</span><span class="idiff left right addition" style="background-color: #c7f0d2;">, developed a workaround, and provided all the details required for a fix</span>. As they note, this issue <span class="p">[</span><span class="nv" style="color: #008080;">has now been fixed</span><span class="p">](</span><span class="sx" style="color: #d14;">https://android.googlesource.com/platform/tools/base/+/2f2c6b30b55e18e2672edf5ee8e8e583be759d3e</span><span class="p">)</span> but the fix is not yet part of an official <span class="p">[</span><span class="nv" style="color: #008080;">Android Gradle plugin release</span><span class="p">](</span><span class="sx" style="color: #d14;">https://developer.android.com/studio/releases/gradle-plugin</span><span class="p">)</span>.</span>
</pre></td>
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<td class="new_line diff-line-num" data-linenumber="81" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC81" class="line" lang="markdown"></span>
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<td class="old_line diff-line-num" data-linenumber="82" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="new_line diff-line-num" data-linenumber="82" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC82" class="line" lang="markdown"><span class="p">*</span> GitLab user <span class="p">[</span><span class="nv" style="color: #008080;">*Parwor*</span><span class="p">](</span><span class="sx" style="color: #d14;">https://gitlab.com/Parwor</span><span class="p">)</span> discovered that the number of CPU cores can affect the reproducibility of <span class="sb" style="color: #d14;">`.dex`</span> files.<span class="ni" style="color: #800080;">&nbsp;</span><span class="p">[</span><span class="nv" style="color: #008080;">[…</span><span class="p">](</span><span class="sx" style="color: #d14;">https://gitlab.com/fdroid/rfp/-/issues/1519#note_1226216164</span><span class="p">)</span>]</span>
</pre></td>
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<td class="old_line diff-line-num" data-linenumber="83" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="new_line diff-line-num" data-linenumber="83" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC83" class="line" lang="markdown"></span>
</pre></td>
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<td class="old_line diff-line-num" data-linenumber="84" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="new_line diff-line-num" data-linenumber="84" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC84" class="line" lang="markdown"><span class="p">*</span> FC Stegerman also announced the <span class="sb" style="color: #d14;">`0.2.0`</span> and <span class="sb" style="color: #d14;">`0.2.1`</span> releases of <span class="p">[</span><span class="nv" style="color: #008080;">*reproducible-apk-tools*</span><span class="p">](</span><span class="sx" style="color: #d14;">https://github.com/obfusk/reproducible-apk-tools</span><span class="p">)</span>, a suite of tools to help make <span class="sb" style="color: #d14;">`.apk`</span> files reproducible. Several new subcommands and scripts were added, and a number of bugs were fixed as well<span class="ni" style="color: #800080;">&nbsp;</span><span class="p">[</span><span class="nv" style="color: #008080;">[…</span><span class="p">](</span><span class="sx" style="color: #d14;">https://lists.reproducible-builds.org/pipermail/rb-general/2023-January/002815.html</span><span class="p">)</span>]<span class="p">[</span><span class="nv" style="color: #008080;">[…</span><span class="p">](</span><span class="sx" style="color: #d14;">https://lists.reproducible-builds.org/pipermail/rb-general/2023-January/002816.html</span><span class="p">)</span>]. They also updated the <span class="p">[</span><span class="nv" style="color: #008080;">F-Droid website</span><span class="p">](</span><span class="sx" style="color: #d14;">https://f-droid.org/</span><span class="p">)</span> to improve the reproducibility-related documentation.<span class="ni" style="color: #800080;">&nbsp;</span><span class="p">[</span><span class="nv" style="color: #008080;">[…</span><span class="p">](</span><span class="sx" style="color: #d14;">https://gitlab.com/fdroid/fdroid-website/-/merge_requests/895/diffs</span><span class="p">)</span>]<span class="p">[</span><span class="nv" style="color: #008080;">[…</span><span class="p">](</span><span class="sx" style="color: #d14;">https://gitlab.com/fdroid/fdroid-website/-/merge_requests/901/diffs</span><span class="p">)</span>]</span>
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85
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<td class="new_line diff-line-num" data-linenumber="85" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC85" class="line" lang="markdown"></span>
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<td class="old_line diff-line-num new" data-linenumber="86" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
 
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<td class="new_line diff-line-num new" data-linenumber="86" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC86" class="line" lang="markdown"><span class="p">*</span> On the F-Droid issue tracker, FC Stegerman <span class="p">[</span><span class="nv" style="color: #008080;">discussed reproducible builds</span><span class="p">](</span><span class="sx" style="color: #d14;">https://gitlab.com/fdroid/fdroiddata/-/merge_requests/12145#note_1231715091</span><span class="p">)</span> with one of the developers of the <span class="p">[</span><span class="nv" style="color: #008080;">Threema messenger app</span><span class="p">](</span><span class="sx" style="color: #d14;">https://threema.ch/</span><span class="p">)</span> and reported that Android SDK <span class="sb" style="color: #d14;">`build-tools`</span> <span class="sb" style="color: #d14;">`31.0.0`</span> and <span class="sb" style="color: #d14;">`32.0.0`</span> (unlike earlier and later versions) have a <span class="p">[</span><span class="nv" style="color: #008080;">`zipalign` command that produces incorrect padding</span><span class="p">](</span><span class="sx" style="color: #d14;">https://gitlab.com/fdroid/fdroiddata/-/issues/2816#note_1249683547</span><span class="p">)</span>.</span>
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<td class="old_line diff-line-num new" data-linenumber="86" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="new_line diff-line-num new" data-linenumber="87" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'>+<span id="LC87" class="line" lang="markdown"></span>
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<td class="old_line diff-line-num" data-linenumber="86" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="new_line diff-line-num" data-linenumber="88" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC88" class="line" lang="markdown"><span class="p">*</span> A number of bugs related to reproducibility were discovered in Android itself. Firstly, the non-deterministic order of <span class="sb" style="color: #d14;">`.zip`</span> entries in <span class="sb" style="color: #d14;">`.apk`</span> files <span class="p">[</span><span class="nv" style="color: #008080;">[…</span><span class="p">](</span><span class="sx" style="color: #d14;">https://issuetracker.google.com/issues/265653160</span><span class="p">)</span>] and then newline differences between building on Windows versus Linux that can make builds not reproducible as well.<span class="ni" style="color: #800080;">&nbsp;</span><span class="p">[</span><span class="nv" style="color: #008080;">[…</span><span class="p">](</span><span class="sx" style="color: #d14;">https://issuetracker.google.com/issues/266109851</span><span class="p">)</span>] (Note that these links may require a Google account to view.)</span>
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<td class="old_line diff-line-num" data-linenumber="87" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="new_line diff-line-num" data-linenumber="89" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC89" class="line" lang="markdown"></span>
</pre></td>
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<td class="old_line diff-line-num" data-linenumber="88" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="new_line diff-line-num" data-linenumber="90" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fafafa">
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dbdbdb;'> <span id="LC90" class="line" lang="markdown"><span class="p">*</span> And just before the end of the month, FC Stegerman started a thread on <span class="p">[</span><span class="nv" style="color: #008080;">our mailing list</span><span class="p">](</span><span class="sx" style="color: #d14;">https://lists.reproducible-builds.org/listinfo/rb-general</span><span class="p">)</span> on the topic of <span class="p">[</span><span class="nv" style="color: #008080;">hiding data/code in APK embedded signatures</span><span class="p">](</span><span class="sx" style="color: #d14;">https://lists.reproducible-builds.org/pipermail/rb-general/2023-January/002825.html</span><span class="p">)</span> which has been made possible by the <span class="p">[</span><span class="nv" style="color: #008080;">Android APK Signature Scheme v2/v3</span><span class="p">](</span><span class="sx" style="color: #d14;">https://source.android.com/docs/security/features/apksigning</span><span class="p">)</span>. As part of this, they made an Android app that reads the APK Signing block of its own APK and extracts a payload in order to alter its behaviour called <span class="p">[</span><span class="nv" style="color: #008080;">*sigblock-code-poc*</span><span class="p">](</span><span class="sx" style="color: #d14;">https://github.com/obfusk/sigblock-code-poc</span><span class="p">)</span>.</span>
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