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This is an automatically generated e-mail. To reply, visit:
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<a href="https://reviewboard.asterisk.org/r/1408/diff/3/?file=19946#file19946line115" style="color: black; font-weight: bold; text-decoration: underline;">/res/res_config_sqlite3.c</a>
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(Diff revision 3)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static inline const char *sqlite3_escape_string_helper(struct ast_threadstorage *ts, const char *param)</pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">115</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">size_t</span> <span class="n">maxlen</span> <span class="o">=</span> <span class="n">strlen</span><span class="p">(</span><span class="n">param</span><span class="p">)</span> <span class="o">*</span> <span class="mi">2</span> <span class="o">+</span> <span class="k">sizeof</span><span class="p">(</span><span class="s">"</span><span class="se">\"\"</span><span class="s">"</span><span class="p">);</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">You need to add 1 to this, because the internal calculations of ast_str_thread_get() do not accomodate for the terminating NULL.</pre>
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<a href="https://reviewboard.asterisk.org/r/1408/diff/3/?file=19946#file19946line131" style="color: black; font-weight: bold; text-decoration: underline;">/res/res_config_sqlite3.c</a>
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(Diff revision 3)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static inline const char *sqlite3_escape_string_helper(struct ast_threadstorage *ts, const char *param)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">static</span> <span class="kr">inline</span> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="nf">sqlite3_escape_table</span><span class="p">(</span><span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">param</span><span class="p">)</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="p">{</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span> <span class="n">sqlite3_escape_string_helper</span><span class="p">(</span><span class="o">&</span><span class="n">escape_table_buf</span><span class="p">,</span> <span class="n">param</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="p">}</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Why escape the table name at all? I think it's more logical to simply disallow badly named tables, instead of trying to handle them. Additionally, it leads to a false sense of security, because the escape function in use only deals with single quote characters. Supposing somebody put a double quote character in a table name specification! Of course, this also requires admin access (to specify a table name in the config) and we cannot always protect admins from themselves.</pre>
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<a href="https://reviewboard.asterisk.org/r/1408/diff/3/?file=19946#file19946line136" style="color: black; font-weight: bold; text-decoration: underline;">/res/res_config_sqlite3.c</a>
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(Diff revision 3)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static inline const char *sqlite3_escape_string_helper(struct ast_threadstorage *ts, const char *param)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">static</span> <span class="kr">inline</span> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="nf">sqlite3_escape_column</span><span class="p">(</span><span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">param</span><span class="p">)</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="p">{</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span> <span class="n">sqlite3_escape_string_helper</span><span class="p">(</span><span class="o">&</span><span class="n">escape_column_buf</span><span class="p">,</span> <span class="n">param</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="p">}</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">We don't have any columns in Asterisk realtime that have a single quote character embedded in the name, so this is also superfluous.</pre>
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<a href="https://reviewboard.asterisk.org/r/1408/diff/3/?file=19946#file19946line141" style="color: black; font-weight: bold; text-decoration: underline;">/res/res_config_sqlite3.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static inline const char *sqlite3_escape_string_helper(struct ast_threadstorage *ts, const char *param)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm">/* Not inlining this function because it uses strdupa and I don't know if the compiler would be dumb */</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">static</span> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="nf">sqlite3_escape_column_op</span><span class="p">(</span><span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">param</span><span class="p">)</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="p">{</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">size_t</span> <span class="n">maxlen</span> <span class="o">=</span> <span class="n">strlen</span><span class="p">(</span><span class="n">param</span><span class="p">)</span> <span class="o">*</span> <span class="mi">2</span> <span class="o">+</span> <span class="k">sizeof</span><span class="p">(</span><span class="s">"</span><span class="se">\"\"</span><span class="s"> ="</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">struct</span> <span class="n">ast_str</span> <span class="o">*</span><span class="n">buf</span> <span class="o">=</span> <span class="n">ast_str_thread_get</span><span class="p">(</span><span class="o">&</span><span class="n">escape_column_buf</span><span class="p">,</span> <span class="n">maxlen</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">char</span> <span class="o">*</span><span class="n">op</span><span class="p">,</span> <span class="o">*</span><span class="n">dup</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">result</span><span class="p">;</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">148</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">149</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">dup</span> <span class="o">=</span> <span class="n">ast_strdupa</span><span class="p">(</span><span class="n">param</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">((</span><span class="n">op</span> <span class="o">=</span> <span class="n">strchr</span><span class="p">(</span><span class="n">dup</span><span class="p">,</span> <span class="sc">' '</span><span class="p">)))</span> <span class="p">{</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="o">*</span><span class="n">op</span> <span class="o">=</span> <span class="sc">'\0'</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">op</span><span class="o">++</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">156</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_str_reset</span><span class="p">(</span><span class="n">buf</span><span class="p">);</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">157</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">result</span> <span class="o">=</span> <span class="n">sqlite3_snprintf</span><span class="p">(</span><span class="n">maxlen</span><span class="p">,</span> <span class="n">ast_str_buffer</span><span class="p">(</span><span class="n">buf</span><span class="p">),</span> <span class="s">"</span><span class="se">\"</span><span class="s">%q</span><span class="se">\"</span><span class="s"> %s"</span><span class="p">,</span> <span class="n">dup</span><span class="p">,</span> <span class="n">S_OR</span><span class="p">(</span><span class="n">op</span><span class="p">,</span> <span class="s">"="</span><span class="p">));</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">158</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_str_update</span><span class="p">(</span><span class="n">buf</span><span class="p">);</span></pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">159</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span> <span class="n">result</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="p">}</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Without a column name that contains a single quote character, this is also superfluous.</pre>
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<a href="https://reviewboard.asterisk.org/r/1408/diff/3/?file=19946#file19946line878" style="color: black; font-weight: bold; text-decoration: underline;">/res/res_config_sqlite3.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static inline const char *sqlite3_escape_string_helper(struct ast_threadstorage *ts, const char *param)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">case</span> <span class="n">RQ_INTEGER8</span> :</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">case</span> <span class="n">RQ_UINTEGER8</span> :</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span> <span class="s">"INTEGER"</span><span class="p">;</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The last type may not work well for type INTEGER, because integers are converted internally to signed 8-byte integers. Any part of the unsigned value will therefore be converted to negative or worse, truncated. Nothing currently in Asterisk uses that type, yet, so it's not a big concern, but RQ_UINTEGER8 should probably be treated as a "TEXT" anyway, for future compatibility.</pre>
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<a href="https://reviewboard.asterisk.org/r/1408/diff/3/?file=19946#file19946line998" style="color: black; font-weight: bold; text-decoration: underline;">/res/res_config_sqlite3.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static inline const char *sqlite3_escape_string_helper(struct ast_threadstorage *ts, const char *param)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * data is an INTEGER PRIMARY KEY, which must be a 64-bit isigned integer. So, for</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">isigned? Should that be signed or unsigned?</pre>
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<p>- Tilghman</p>
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<p>On September 3rd, 2011, 11:08 p.m., Terry Wilson wrote:</p>
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<div>Review request for Asterisk Developers, Olle E Johansson and Tilghman Lesher.</div>
<div>By Terry Wilson.</div>
<p style="color: grey;"><i>Updated Sept. 3, 2011, 11:08 p.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This patch adds an SQLite 3 realtime driver. It supports multiple databases, ast_realtime_require (warn, createclose, and createchar support including the ability to create missing tables), static realtime, and batching commits in transactions to increase write performance. It currently caches no table data, but I figure that premature optimization is bad anyway.
It, like other realtime drivers, doesn't escape data when building the SQL strings. I started out using parameter binding, but SQLite doesn't let you bind column names, so given how dynamic everything with realtime is, I just when with building the statements outright. I could manually escape the parameters, but the only thing in the SQLite 3 library I could find that does that dynamically allocates the string and that ends up being a lot of little allocs and frees. I suppose we could write our own using a single ast_str with some ast_str_reset calls between each one, but it is a bit of a pain. Until we want to open up the realtime api to things like AMI where user-generated input is going to be a problem, escaping isn't really necessary.
The impetus for writing this is that Asterisk now has a built-in SQLite 3 database which the astdb uses. The next step would be to convert the astdb to using the realtime calls, thus making it possible for it to be used with any realtime backend (but using the default SQLite 3 db unless configured otherwise). After that, we can start rewriting some things that use the astdb in very crude ways to start using realtime calls to the internal (or external, if configured that way) databases so that the data can be stored in more logical ways than a key/value store allows.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Verified that static realtime extensions.conf loads properly. Realtime CLI commands all behave as expected. Tested unload/load and reload scenarios making sure that they behaved as expected and that there were no ref/memory leaks. Made sure that batching worked.
Once we move the astdb to using realtime calls, the existing unit tests for that should give a workout to the realtime driver as well. I didn't write a new test pointing to the astdb because the astdb locks its database so it cannot be written to from another connection.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/res/res_config_sqlite3.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/configs/res_config_sqlite3.conf.sample <span style="color: grey">(PRE-CREATION)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1408/diff/" style="margin-left: 3em;">View Diff</a></p>
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