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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/3557/">https://reviewboard.asterisk.org/r/3557/</a>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Thanks for picking this up.</pre>
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<a href="https://reviewboard.asterisk.org/r/3557/diff/2/?file=58774#file58774line284" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/res/res_config_odbc.c</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static SQLHSTMT custom_prepare(struct odbc_obj *obj, void *data)</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_copy_string</span><span class="p">(</span><span class="n">rowdata</span><span class="p">,</span> <span class="s">" "</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="n">rowdata</span><span class="p">));</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_str_set</span><span class="p">(</span><span class="o">&</span><span class="n">rowdata</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="s">"%s"</span><span class="p">,</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;">Why did you remove the comment about replacing the empty string with a single space?</pre>
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<a href="https://reviewboard.asterisk.org/r/3557/diff/2/?file=58774#file58774line287" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/res/res_config_odbc.c</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static SQLHSTMT custom_prepare(struct odbc_obj *obj, void *data)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="cm">/* If the available space was not enough to contain the row data enlarge and read in the rest */</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_str_make_space</span><span class="p">(</span><span class="o">&</span><span class="n">rowdata</span><span class="p">,</span> <span class="n">indicator</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="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">res</span> <span class="o">=</span> <span class="n">SQLGetData</span><span class="p">(</span><span class="n">stmt</span><span class="p">,</span> <span class="n">x</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> <span class="n">SQL_CHAR</span><span class="p">,</span> <span class="n">ast_str_buffer</span><span class="p">(</span><span class="n">rowdata</span><span class="p">)</span> <span class="o">+</span> <span class="n">ast_str_strlen</span><span class="p">(</span><span class="n">rowdata</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="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_str_size</span><span class="p">(</span><span class="n">rowdata</span><span class="p">)</span> <span class="o">-</span> <span class="n">ast_str_strlen</span><span class="p">(</span><span class="n">rowdata</span><span class="p">),</span> <span class="o">&</span><span class="n">indicator</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;">So, when I'm fetching "abcdefg" (7), and my buffer is sized 4, I would first fetch "abc\0" and then make_space for 7.
The documentation I look at doesn't specify that indicator includes the terminating NUL, but we do need it. (8 bytes needed.)
ast_str_make_space(&rowdata, indicator + 1); // the ast_str does not take the NUL into account on its own afaics</pre>
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<a href="https://reviewboard.asterisk.org/r/3557/diff/2/?file=58774#file58774line466" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/res/res_config_odbc.c</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static SQLHSTMT custom_prepare(struct odbc_obj *obj, void *data)</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="k">continue</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="k">continue</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="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">((</span><span class="n">res</span> <span class="o">==</span> <span class="n">SQL_SUCCESS</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="n">res</span> <span class="o">==</span> <span class="n">SQL_SUCCESS_WITH_INFO</span><span class="p">))</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;">When dealing with continue/break, I prefer this:
if (x) {
continue;
}
if (y) {
...
That extra brace+LF increase visibility of the jump.</pre>
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<a href="https://reviewboard.asterisk.org/r/3557/diff/2/?file=58774#file58774line471" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/res/res_config_odbc.c</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static SQLHSTMT custom_prepare(struct odbc_obj *obj, void *data)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_str_make_space</span><span class="p">(</span><span class="o">&</span><span class="n">rowdata</span><span class="p">,</span> <span class="n">indicator</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;">Same remark about indicator+1.</pre>
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<a href="https://reviewboard.asterisk.org/r/3557/diff/2/?file=58774#file58774line917" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/res/res_config_odbc.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int destroy_odbc(const char *database, const char *table, const char *keyfield, const char *lookup, va_list ap)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="kt">size_t</span> <span class="n">var_val_size</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;">SQL_C_ULONG is an "unsigned long int" according to http://msdn.microsoft.com/en-us/library/ms714556(v=vs.85).aspx
Not sure if that's necessarily the same as a size_t.</pre>
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<a href="https://reviewboard.asterisk.org/r/3557/diff/2/?file=58774#file58774line1044" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/res/res_config_odbc.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static SQLHSTMT config_odbc_prepare(struct odbc_obj *obj, void *data)</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">1040</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="n">q</span><span class="p">.</span><span class="n">var_val</span> <span class="o">=</span> <span class="n">ast_calloc</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="n">q</span><span class="p">.</span><span class="n">var_val_size</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;">(A) I don't like calloc. We can just malloc it. If you feel like it, set the first character to 0. After a couple of iterations, it will be filled with garbage anyway. Why initialize it to blanks?
(B) I believe you just fetched MAX(LENGTH(var_val)). Shouldn't we increase that by one to fit in the terminating NUL? q.var_val_size += 1
(And for a second there, I was worried that MAX(LENGTH(var_val)) would return the amount of characters, instead of bytes. But they're bytes. That's a relief.)</pre>
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<p>- wdoekes</p>
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<p>On May 22nd, 2014, 5:48 p.m. UTC, Joshua Colp wrote:</p>
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<div>Review request for Asterisk Developers and wdoekes.</div>
<div>By Joshua Colp.</div>
<p style="color: grey;"><i>Updated May 22, 2014, 5:48 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-23582">ASTERISK-23582</a>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
Asterisk
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<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 change removes fixed size buffers in ODBC related code for reading in row data and func_odbc configuration. For func_odbc the configured queries are duplicated instead of being stored in a fixed size buffer. For dynamic realtime a thread local strings is enlarged as needed as row data is read in. For static realtime the maximum size of a configuration value is read in and buffer created accordingly.</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;">Configured func_odbc within MySQL (via ODBC) using extconfig with a 3000 length query and configured it was read in completely. This used static realtime and func_odbc.
Configured chan_sip to use peers stored in MySQL (via ODBC) and stored very long values. Confirmed read in completely.
Also ran these scenarios under valgrind to confirm no memory insanity.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/branches/1.8/res/res_config_odbc.c <span style="color: grey">(414399)</span></li>
<li>/branches/1.8/funcs/func_odbc.c <span style="color: grey">(414399)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/3557/diff/" style="margin-left: 3em;">View Diff</a></p>
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