From 6948ecd7789968abf5ef3c2a8345be305445654d Mon Sep 17 00:00:00 2001
From: "Kay Marquardt (Gnadelwartz)" <kay@rrr.de>
Date: Sat, 28 Nov 2020 12:30:32 +0100
Subject: [PATCH] warning if curl is not found in PATH and default locations

---
 README.html | 209 ++++++++++++++++++++++++++--------------------------
 README.txt  |   4 +-
 bashbot.sh  |  24 +++++-
 3 files changed, 129 insertions(+), 108 deletions(-)

diff --git a/README.html b/README.html
index e3b9070..dc33d59 100644
--- a/README.html
+++ b/README.html
@@ -6,73 +6,74 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes" />
   <title>Bashbot README</title>
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@@ -162,7 +163,7 @@ Written by Drew (@topkecleon) and Kay M (@gnadelwartz).
 <pre><code>which bash &amp;&amp; echo &quot;bash seems available...&quot;
 </code></pre>
 <p>Create a new directory, change to it: <code>mkdir tbb; cd tbb</code> and download the latest '*.tar.gz' file from <a href="https://github.com/topkecleon/telegram-bot-bash/releases">https://github.com/topkecleon/telegram-bot-bash/releases</a>. This can be done with the commands:</p>
-<div class="sourceCode" id="cb2"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb2-1" title="1"><span class="fu">wget</span> -q https://github.com/<span class="va">$(</span><span class="fu">wget</span> -q https://github.com/topkecleon/telegram-bot-bash/releases/latest -O - <span class="kw">|</span> <span class="fu">egrep</span> <span class="st">&#39;/.*/.*/.*tar.gz&#39;</span> -o<span class="va">)</span></a></code></pre></div>
+<div class="sourceCode" id="cb2"><pre class="sourceCode bash"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1"></a><span class="fu">wget</span> -q https://github.com/<span class="va">$(</span><span class="fu">wget</span> -q https://github.com/topkecleon/telegram-bot-bash/releases/latest -O - <span class="kw">|</span> <span class="fu">egrep</span> <span class="st">&#39;/.*/.*/.*tar.gz&#39;</span> -o<span class="va">)</span></span></code></pre></div>
 <p>Extract the '*.tar.gz' file and change to bashbot directory: <code>tar -xzf *.tar.gz; cd telegram-bot-bash</code>, install bashbot: <code>./bashbot.sh init</code> and enter your bot token when asked. All other questions can be answered by hitting the &lt;Return&gt; key.</p>
 <p>That's all, now you can start your bot with <code>./bashbot.sh start</code> and send him messages:</p>
 <pre><code>/start
@@ -199,18 +200,18 @@ It features background tasks and interactive chats, and can serve as an interfac
 <p>A powerful tool to improve your scripts is <code>shellcheck</code>. You can <a href="https://www.shellcheck.net/">use it online</a> or <a href="https://github.com/koalaman/shellcheck#installing">install shellcheck locally</a>. Shellcheck is used extensively in bashbot development to ensure a high code quality, e.g. it's not allowed to push changes without passing all shellcheck tests. In addition bashbot has a <a href="doc/7_develop.md">test suite</a> to check if important functionality is working as expected.</p>
 <h3>Use printf whenever possible</h3>
 <p>If you're writing a script and it is taking external input (from the user as arguments or file system...), you shouldn't use echo to display it. <a href="https://unix.stackexchange.com/a/6581">Use printf whenever possible</a></p>
-<div class="sourceCode" id="cb5"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb5-1" title="1">  <span class="co"># very simple</span></a>
-<a class="sourceLine" id="cb5-2" title="2">  <span class="bu">echo</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
-<a class="sourceLine" id="cb5-3" title="3">  <span class="bu">printf</span> <span class="st">&#39;%s\n&#39;</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
-<a class="sourceLine" id="cb5-4" title="4">  <span class="ex">-</span><span class="op">&gt;</span> text with variables. PWD=/home/xxx</a>
-<a class="sourceLine" id="cb5-5" title="5"></a>
-<a class="sourceLine" id="cb5-6" title="6">  <span class="co"># more advanced</span></a>
-<a class="sourceLine" id="cb5-7" title="7">  <span class="va">FLOAT=</span><span class="st">&quot;1.2346777892864&quot;</span> <span class="va">INTEGER=</span><span class="st">&quot;12345.123&quot;</span></a>
-<a class="sourceLine" id="cb5-8" title="8">  <span class="bu">echo</span> <span class="st">&quot;text with variabeles. float=</span><span class="va">$FLOAT</span><span class="st">, integer=</span><span class="va">$INTEGER</span><span class="st">, PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
-<a class="sourceLine" id="cb5-9" title="9">  <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.2346777892864, integer=12345.123, PWD=/home/xxx</a>
-<a class="sourceLine" id="cb5-10" title="10"></a>
-<a class="sourceLine" id="cb5-11" title="11">  <span class="bu">printf</span> <span class="st">&quot;text with variables. float=%.2f, integer=%d, PWD=%s\n&quot;</span> <span class="st">&quot;&quot;</span> <span class="st">&quot;</span><span class="va">$INTEGER</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
-<a class="sourceLine" id="cb5-12" title="12">  <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.23, integer=12345, PWD=/home/xxx</a></code></pre></div>
+<div class="sourceCode" id="cb5"><pre class="sourceCode bash"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1"></a>  <span class="co"># very simple</span></span>
+<span id="cb5-2"><a href="#cb5-2"></a>  <span class="bu">echo</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
+<span id="cb5-3"><a href="#cb5-3"></a>  <span class="bu">printf</span> <span class="st">&#39;%s\n&#39;</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
+<span id="cb5-4"><a href="#cb5-4"></a>  <span class="ex">-</span><span class="op">&gt;</span> text with variables. PWD=/home/xxx</span>
+<span id="cb5-5"><a href="#cb5-5"></a></span>
+<span id="cb5-6"><a href="#cb5-6"></a>  <span class="co"># more advanced</span></span>
+<span id="cb5-7"><a href="#cb5-7"></a>  <span class="va">FLOAT=</span><span class="st">&quot;1.2346777892864&quot;</span> <span class="va">INTEGER=</span><span class="st">&quot;12345.123&quot;</span></span>
+<span id="cb5-8"><a href="#cb5-8"></a>  <span class="bu">echo</span> <span class="st">&quot;text with variabeles. float=</span><span class="va">$FLOAT</span><span class="st">, integer=</span><span class="va">$INTEGER</span><span class="st">, PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
+<span id="cb5-9"><a href="#cb5-9"></a>  <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.2346777892864, integer=12345.123, PWD=/home/xxx</span>
+<span id="cb5-10"><a href="#cb5-10"></a></span>
+<span id="cb5-11"><a href="#cb5-11"></a>  <span class="bu">printf</span> <span class="st">&quot;text with variables. float=%.2f, integer=%d, PWD=%s\n&quot;</span> <span class="st">&quot;&quot;</span> <span class="st">&quot;</span><span class="va">$INTEGER</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
+<span id="cb5-12"><a href="#cb5-12"></a>  <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.23, integer=12345, PWD=/home/xxx</span></code></pre></div>
 <h3>Do not use #!/usr/bin/env bash</h3>
 <p><strong>We stay with /bin/bash shebang, because it's more save from security perspective.</strong></p>
 <p>Use of a fixed path to the system provided bash makes it harder for attackers or users to place alternative versions of bash and avoids using a possibly broken, mangled or compromised bash executable.</p>
@@ -240,38 +241,38 @@ It features background tasks and interactive chats, and can serve as an interfac
 <h3>Can I send messages from CLI and scripts?</h3>
 <p>Of course, you can send messages from CLI and scripts, simply install bashbot as <a href="#Your-really-first-bashbot-in-a-nutshell">described here</a>, send the message '/start' to set yourself as botadmin and stop the bot with <code>./bashbot.sh stop</code>.</p>
 <p>Run the following commands in your bash shell or script while you are in the installation directory:</p>
-<div class="sourceCode" id="cb6"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb6-1" title="1"><span class="co"># prepare bash / script to send commands</span></a>
-<a class="sourceLine" id="cb6-2" title="2"><span class="bu">export</span> <span class="va">BASHBOT_HOME=</span><span class="st">&quot;</span><span class="va">$(</span><span class="bu">pwd</span><span class="va">)</span><span class="st">&quot;</span></a>
-<a class="sourceLine" id="cb6-3" title="3"><span class="bu">source</span> ./bashbot.sh source</a>
-<a class="sourceLine" id="cb6-4" title="4"></a>
-<a class="sourceLine" id="cb6-5" title="5"><span class="co"># send me a test message</span></a>
-<a class="sourceLine" id="cb6-6" title="6"><span class="ex">send_message</span> <span class="st">&quot;</span><span class="va">$(</span><span class="ex">getConfigKey</span> <span class="st">&quot;botadmin&quot;</span><span class="va">)</span><span class="st">&quot;</span> <span class="st">&quot;test&quot;</span></a>
-<a class="sourceLine" id="cb6-7" title="7"></a>
-<a class="sourceLine" id="cb6-8" title="8"><span class="co"># send me output of a system command</span></a>
-<a class="sourceLine" id="cb6-9" title="9"><span class="ex">send_message</span> <span class="st">&quot;</span><span class="va">$(</span><span class="ex">getConfigKey</span> <span class="st">&quot;botadmin&quot;</span><span class="va">)</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">df</span> -h<span class="va">)</span><span class="st">&quot;</span></a></code></pre></div>
+<div class="sourceCode" id="cb6"><pre class="sourceCode bash"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1"></a><span class="co"># prepare bash / script to send commands</span></span>
+<span id="cb6-2"><a href="#cb6-2"></a><span class="bu">export</span> <span class="va">BASHBOT_HOME=</span><span class="st">&quot;</span><span class="va">$(</span><span class="bu">pwd</span><span class="va">)</span><span class="st">&quot;</span></span>
+<span id="cb6-3"><a href="#cb6-3"></a><span class="bu">source</span> ./bashbot.sh source</span>
+<span id="cb6-4"><a href="#cb6-4"></a></span>
+<span id="cb6-5"><a href="#cb6-5"></a><span class="co"># send me a test message</span></span>
+<span id="cb6-6"><a href="#cb6-6"></a><span class="ex">send_message</span> <span class="st">&quot;</span><span class="va">$(</span><span class="ex">getConfigKey</span> <span class="st">&quot;botadmin&quot;</span><span class="va">)</span><span class="st">&quot;</span> <span class="st">&quot;test&quot;</span></span>
+<span id="cb6-7"><a href="#cb6-7"></a></span>
+<span id="cb6-8"><a href="#cb6-8"></a><span class="co"># send me output of a system command</span></span>
+<span id="cb6-9"><a href="#cb6-9"></a><span class="ex">send_message</span> <span class="st">&quot;</span><span class="va">$(</span><span class="ex">getConfigKey</span> <span class="st">&quot;botadmin&quot;</span><span class="va">)</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">df</span> -h<span class="va">)</span><span class="st">&quot;</span></span></code></pre></div>
 <p>For more information see <a href="doc/8_custom.md">Expert Use</a></p>
 <h3>Blocked by telegram?</h3>
 <p>This may happen if to many or wrong requests are sent to api.telegram.org, e.g. using a invalid token or not existing API calls. If the block stay for longer time you can ask telegram service to unblock your IP-Adress.</p>
 <p>You can check with curl or wget if you are blocked by Telegram:</p>
-<div class="sourceCode" id="cb7"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb7-1" title="1"><span class="ex">curl</span> -m 10  https://api.telegram.org/bot</a>
-<a class="sourceLine" id="cb7-2" title="2"><span class="co">#curl: (28) Connection timed out after 10001 milliseconds</span></a>
-<a class="sourceLine" id="cb7-3" title="3"></a>
-<a class="sourceLine" id="cb7-4" title="4"><span class="fu">wget</span> -t 1 -T 10 https://api.telegram.org/bot</a>
-<a class="sourceLine" id="cb7-5" title="5"><span class="co">#Connecting to api.telegram.org (api.telegram.org)|46.38.243.234|:443... failed: Connection timed out.</span></a></code></pre></div>
+<div class="sourceCode" id="cb7"><pre class="sourceCode bash"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1"></a><span class="ex">curl</span> -m 10  https://api.telegram.org/bot</span>
+<span id="cb7-2"><a href="#cb7-2"></a><span class="co">#curl: (28) Connection timed out after 10001 milliseconds</span></span>
+<span id="cb7-3"><a href="#cb7-3"></a></span>
+<span id="cb7-4"><a href="#cb7-4"></a><span class="fu">wget</span> -t 1 -T 10 https://api.telegram.org/bot</span>
+<span id="cb7-5"><a href="#cb7-5"></a><span class="co">#Connecting to api.telegram.org (api.telegram.org)|46.38.243.234|:443... failed: Connection timed out.</span></span></code></pre></div>
 <p>Since Version 0.96 bashbot offers the option to recover from broken connections (aka blocked). Therefore you can provide a function named <code>bashbotBlockRecover()</code> in <code>mycommands.sh</code>. If the function exists it is called every time when a broken connection is detected.</p>
 <p>Possible actions are: Check if network is working, change IP-Adress or simply wait some time.</p>
 <p>If everything seems OK return 0 for retry or any non 0 value to give up.</p>
-<div class="sourceCode" id="cb8"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb8-1" title="1"><span class="co"># called when bashbot sedn command failed because we can not connect to telegram</span></a>
-<a class="sourceLine" id="cb8-2" title="2"><span class="co"># return 0 to retry, return non 0 to give up</span></a>
-<a class="sourceLine" id="cb8-3" title="3"><span class="fu">bashbotBlockRecover()</span> <span class="kw">{</span></a>
-<a class="sourceLine" id="cb8-4" title="4">    <span class="co"># place your commands to unblock here, e.g. change IP-Adess or simply wait</span></a>
-<a class="sourceLine" id="cb8-5" title="5">    <span class="fu">sleep</span> 60 <span class="kw">&amp;&amp;</span> <span class="bu">return</span> 0 <span class="co"># may be temporary</span></a>
-<a class="sourceLine" id="cb8-6" title="6">    <span class="bu">return</span> 1 </a>
-<a class="sourceLine" id="cb8-7" title="7">    <span class="kw">}</span></a>
-<a class="sourceLine" id="cb8-8" title="8"></a></code></pre></div>
+<div class="sourceCode" id="cb8"><pre class="sourceCode bash"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1"></a><span class="co"># called when bashbot sedn command failed because we can not connect to telegram</span></span>
+<span id="cb8-2"><a href="#cb8-2"></a><span class="co"># return 0 to retry, return non 0 to give up</span></span>
+<span id="cb8-3"><a href="#cb8-3"></a><span class="fu">bashbotBlockRecover()</span> <span class="kw">{</span></span>
+<span id="cb8-4"><a href="#cb8-4"></a>    <span class="co"># place your commands to unblock here, e.g. change IP-Adess or simply wait</span></span>
+<span id="cb8-5"><a href="#cb8-5"></a>    <span class="fu">sleep</span> 60 <span class="kw">&amp;&amp;</span> <span class="bu">return</span> 0 <span class="co"># may be temporary</span></span>
+<span id="cb8-6"><a href="#cb8-6"></a>    <span class="bu">return</span> 1 </span>
+<span id="cb8-7"><a href="#cb8-7"></a>    <span class="kw">}</span></span>
+<span id="cb8-8"><a href="#cb8-8"></a></span></code></pre></div>
 <p>@Gnadelwartz</p>
-<h2>That's it!</h2>
+<h2>That's it all guys!</h2>
 <p>If you feel that there's something missing or if you found a bug, feel free to submit a pull request!</p>
-<h4>$$VERSION$$ v1.1-0-gc0eb399</h4>
+<h4>$$VERSION$$ v1.1-0-ge835bbc</h4>
 </body>
 </html>
diff --git a/README.txt b/README.txt
index 8f7c6d0..e0252c6 100644
--- a/README.txt
+++ b/README.txt
@@ -350,9 +350,9 @@ wait
 
 @Gnadelwartz
 
-## That's it!
+## That's it all guys!
 
 If you feel that there's something missing or if you found a bug, feel free to 
 submit a pull request!
 
-#### $$VERSION$$ v1.1-0-gc0eb399
+#### $$VERSION$$ v1.1-0-ge835bbc
diff --git a/bashbot.sh b/bashbot.sh
index ace8cf0..09812bb 100755
--- a/bashbot.sh
+++ b/bashbot.sh
@@ -11,7 +11,7 @@
 # This file is public domain in the USA and all free countries.
 # Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
 #
-#### $$VERSION$$ v1.2-dev-13-g2a5d47d
+#### $$VERSION$$ v1.2-dev-22-g1cf1dff
 #
 # Exit Codes:
 # - 0 success (hopefully)
@@ -386,10 +386,30 @@ get_file() {
 }
 
 # curl is preferred, but may not available on embedded systems
+function detect_curl() {
+	# custom curl command
+	[ -n "${BASHBOT_CURL}" ] && return 0
+	# use wget
+	[ -n "${BASHBOT_WGET}" ] && return 1
+	# default method
+	BASHBOT_CURL="curl"
+	_exists curl && return 0
+	# look in usual locations
+	local file
+	for file in /usr/bin /bin /usr/local/bin; do
+		if [ -x "${file}/curl" ]; then
+			BASHBOT_CURL="${file}/curl"
+			return 0
+		fi
+	done
+	[ -n "${BASHBOTDEBUG}" ] && printf "%s: Warning: Curl not detected, trying wget as fallback!\n" "$(date)" >>"${DEBUGLOG}"
+	return 1
+}
+
 TIMEOUT="${BASHBOT_TIMEOUT}"
 [[ "$TIMEOUT" =~ ^[0-9]+$ ]] || TIMEOUT="20"
 
-if [ -z "${BASHBOT_WGET}" ] && _exists curl ; then
+if detect_curl ; then
   [ -z "${BASHBOT_CURL}" ] && BASHBOT_CURL="curl"
   # simple curl or wget call, output to stdout
   getJson(){