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This is an automatically generated e-mail. To reply, visit:
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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 the submission! Despite the number of comments below, this is a really great first effort. Most of the comments below focus on small matters that can be easily corrected, such as coding guidelines violations. I'll take another pass at this once you fix the stuff mentioned here.</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line4" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * Copyright (C) 2013, Digium, Inc.</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> *</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * Mark Michelson <mmichelson@digium.com></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;">Heh, feel free to put yourself as the Copyright holder and author. Credit where credit is due :)</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line77" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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(Diff revision 1)
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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="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>PJSIPAddHeader(P-Asserted-Identity: sip:foo@bar);</para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>PJSIPAddHeader(P-Preferred-Identity: sip:bar@foo);</para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para></para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>// remove all headers</para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>PJSIPRemoveHeader();</para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>// remove all P- headers</para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>PJSIPRemoveHeader(P-);</para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>// remove only the PAI header (note the : at the end)</para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>PJSIPRemoveHeader(P-Asserted-Identity:);</para></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;">Remove the semicolons from the end of your dialplan examples. Also, instead of having // as your comment marker, use a semicolon, since that is how comments are represented in Asterisk config files.</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line82" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>// remove all P- headers</para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>PJSIPRemoveHeader(P-);</para></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 you say "remove all P- headers" does that mean remove all headers beginning with "P-" or remove all headers with the literal value "P-" will be removed? Based on context clues, I'm thinking that since you did not include a colon, this will remove headers beginning with "P-", but it's not made as clear as it could be in the initial description.</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line122" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">typedef</span> <span class="k">struct</span> <span class="n">hdr_list_entry</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="n">pjsip_hdr</span> <span class="o">*</span><span class="n">hdr</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="n">AST_LIST_ENTRY</span><span class="p">(</span><span class="n">hdr_list_entry</span><span class="p">)</span> <span class="n">nextptr</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> <span class="n">hdr_list_entry</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">typedef</span> <span class="n">AST_LIST_HEAD</span><span class="p">(</span><span class="n">hdr_list</span><span class="p">,</span> <span class="n">hdr_list_entry</span><span class="p">)</span> <span class="n">hdr_list</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;">See https://wiki.asterisk.org/wiki/display/AST/Coding+Guidelines#CodingGuidelines-Don%27tuseunnecessarytypedef%27s
In general, typedefs shouldn't be used on structures in Asterisk. Note that PJSIP clearly does not have this rule, so I can understand why you may have thought that Asterisk worked the same way.</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line164" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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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">pj_pool_t</span> <span class="o">*</span><span class="n">pool</span> <span class="o">=</span> <span class="n">rdata</span><span class="o">-></span><span class="n">tp_info</span><span class="p">.</span><span class="n">pool</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="n">RAII_VAR</span><span class="p">(</span><span class="k">struct</span> <span class="n">ast_datastore</span> <span class="o">*</span><span class="p">,</span> <span class="n">datastore</span><span class="p">,</span> <span class="n">ast_sip_session_get_datastore</span><span class="p">(</span><span class="n">session</span><span class="p">,</span> <span class="n">header_datastore</span><span class="p">.</span><span class="n">type</span><span class="p">),</span> <span class="n">ao2_cleanup</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="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">datastore</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="tb"> </span><span class="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="n">datastore</span> <span class="o">=</span> <span class="n">ast_sip_session_alloc_datastore</span><span class="p">(</span><span class="o">&</span><span class="n">header_datastore</span><span class="p">,</span> <span class="n">header_datastore</span><span class="p">.</span><span class="n">type</span><span class="p">))</span> <span class="o">||</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="o">!</span><span class="p">(</span><span class="n">datastore</span><span class="o">-></span><span class="n">data</span> <span class="o">=</span> <span class="n">pj_pool_alloc</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="n">hdr_list</span><span class="p">)))</span> <span class="o">||</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_sip_session_add_datastore</span><span class="p">(</span><span class="n">session</span><span class="p">,</span> <span class="n">datastore</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="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_log</span><span class="p">(</span><span class="n">AST_LOG_ERROR</span><span class="p">,</span> <span class="s">"Unable to create datastore for header functions.</span><span class="se">\n</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; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="k">return</span> <span class="mi">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="tb"> </span><span class="tb"> </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="n">AST_LIST_HEAD_INIT</span><span class="p">((</span><span class="n">hdr_list</span> <span class="o">*</span><span class="p">)</span><span class="n">datastore</span><span class="o">-></span><span class="n">data</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="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="n">insert_headers</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="p">(</span><span class="n">hdr_list</span> <span class="o">*</span><span class="p">)</span><span class="n">datastore</span><span class="o">-></span><span class="n">data</span><span class="p">,</span> <span class="n">rdata</span><span class="o">-></span><span class="n">msg_info</span><span class="p">.</span><span class="n">msg</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 use of rdata->tp_info.pool here worries me. I think that it would be better to use a pool whose lifetime is the same scope as the ast_sip_session. On the dev-list, I pointed out a way to get to the pjsip_dialog's pool. That would be a better choice here. Either that, or the pjsip_inv_session's pool_active.</pre>
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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="k">if</span> <span class="p">(</span><span class="n">number</span> <span class="o"><</span> <span class="mi">1</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="n">number</span> <span class="o">=</span> <span class="mi">1</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;">See https://wiki.asterisk.org/wiki/display/AST/Coding+Guidelines#CodingGuidelines-Nonestedstatementswithoutbraces
Always use braces for if/while/do/for statements.</pre>
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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="k">struct</span> <span class="n">ast_sip_channel_pvt</span> <span class="o">*</span><span class="n">channel</span> <span class="o">=</span> <span class="n">ast_channel_tech_pvt</span><span class="p">(</span><span class="n">chan</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="kt">pj_pool_t</span> <span class="o">*</span><span class="n">pool</span> <span class="o">=</span> <span class="n">channel</span><span class="o">-></span><span class="n">session</span><span class="o">-></span><span class="n">inv_session</span><span class="o">-></span><span class="n">pool_active</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="n">RAII_VAR</span><span class="p">(</span><span class="k">struct</span> <span class="n">ast_datastore</span> <span class="o">*</span><span class="p">,</span> <span class="n">datastore</span><span class="p">,</span> <span class="n">ast_sip_session_get_datastore</span><span class="p">(</span><span class="n">channel</span><span class="o">-></span><span class="n">session</span><span class="p">,</span> <span class="n">header_datastore</span><span class="p">.</span><span class="n">type</span><span class="p">),</span> <span class="n">ao2_cleanup</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;">See https://wiki.asterisk.org/wiki/display/AST/Coding+Guidelines#CodingGuidelines-Declarationoffunctionsandvariables
Don't declare variables mid-block. This one can actually be enforced by the compiler by running Asterisk's configure script with --enable-dev-mode. This way, warnings are treated as errors, so you will be unable to compile the code with these variable declarations here.
Same comment applies to other places where you have declared variables mid-block.</pre>
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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">char</span> <span class="o">*</span><span class="n">temp</span> <span class="o">=</span> <span class="n">pj_pool_alloc</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="n">len</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;">Since temp's use is limited to this function, I would suggest stack-allocating it using alloca() instead of using the pool.
Also, I really dislike the name "temp" for variables, so using something more descriptive would be useful.</pre>
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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="k">if</span> <span class="p">(</span><span class="n">l</span> <span class="o"><</span> <span class="n">headerlen</span><span class="o">+</span><span class="mi">2</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;">See https://wiki.asterisk.org/wiki/display/AST/Coding+Guidelines#CodingGuidelines-Codeformatting
While it's not explicit there, it does state that spacing should be consistent throughout the codebase. This means that you should put spaces around the '+' sign here.
Also, it's unclear why you're comparing to headerlen + 2. headerlen is the length of the header name (or partial header name) passed into PJSIP_HEADER. l is the total length of the header. Is the + 2 supposed to account for the : and null byte?</pre>
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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="n">p</span> <span class="o">=</span> <span class="n">ast_strip</span><span class="p">(</span><span class="o">++</span><span class="n">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;">I believe this is a sequence point violation and may have undefined behavior. Separate this into
++p;
p = ast_strip(p);</pre>
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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="k">if</span> <span class="p">(</span><span class="n">plen</span><span class="o">+</span><span class="mi">1</span> <span class="o">></span> <span class="n">len</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;">Spaces around + sign.</pre>
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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">datalen</span> <span class="o">=</span> <span class="n">strlen</span><span class="p">(</span><span class="n">data</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="kt">char</span> <span class="o">*</span><span class="n">hname</span> <span class="o">=</span> <span class="n">pj_pool_alloc</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="n">datalen</span><span class="o">+</span><span class="mi">1</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="n">ast_copy_string</span><span class="p">(</span><span class="n">hname</span><span class="p">,</span> <span class="n">data</span><span class="p">,</span> <span class="n">datalen</span><span class="o">+</span><span class="mi">1</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;">Rather than using a pool like this, use
hname = ast_strdupa(data);
That will create a stack-allocated copy of data and assign it to hname.</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line318" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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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="k">if</span> <span class="p">(</span><span class="n">ast_strlen_zero</span><span class="p">(</span><span class="n">hvalue</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="tb"> </span><span class="tb"> </span><span class="n">ast_log</span><span class="p">(</span><span class="n">AST_LOG_ERROR</span><span class="p">,</span> <span class="s">"Header value can't be empty.</span><span class="se">\n</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; "><span class="tb"> </span><span class="tb"> </span><span class="k">return</span> <span class="o">-</span><span class="mi">1</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="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;">I'm not so certain that this is a requirement for SIP headers. Looking at the ABNF in RFC 3261, there appears not to be a requirement for all header types that a value is provided.</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line325" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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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">pj_str_t</span> <span class="o">*</span><span class="n">pj_header_name</span> <span class="o">=</span> <span class="n">pj_pool_alloc</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="kt">pj_str_t</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="n">pj_strdup2_with_null</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="n">pj_header_name</span><span class="p">,</span> <span class="n">hname</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="kt">pj_str_t</span> <span class="o">*</span><span class="n">pj_header_value</span> <span class="o">=</span> <span class="n">pj_pool_alloc</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="kt">pj_str_t</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="n">pj_strdup2_with_null</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="n">pj_header_value</span><span class="p">,</span> <span class="n">hvalue</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="n">hdr_list_entry</span> <span class="o">*</span><span class="n">le</span> <span class="o">=</span> <span class="n">pj_pool_zalloc</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="n">hdr_list_entry</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">le</span><span class="o">-></span><span class="n">hdr</span> <span class="o">=</span> <span class="n">pj_pool_alloc</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="n">pjsip_generic_string_hdr</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">pjsip_generic_string_hdr_init2</span><span class="p">((</span><span class="n">pjsip_generic_string_hdr</span> <span class="o">*</span><span class="p">)</span><span class="n">le</span><span class="o">-></span><span class="n">hdr</span><span class="p">,</span> <span class="n">pj_header_name</span><span class="p">,</span> <span class="n">pj_header_value</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 can save yourself some allocations (which, admittedly are cheap when using pj_pool_t) by reformatting this as:
pj_str_t pj_header_name;
pj_str_t pj_header_value;
pj_cstr(&pj_header_name, hname);
pj_cstr(&pj_header_value, hvalue);
le->hdr = pjsip_generic_string_hdr_create(pool, hname, hvalue);</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line331" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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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="n">hdr_list_entry</span> <span class="o">*</span><span class="n">le</span> <span class="o">=</span> <span class="n">pj_pool_zalloc</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="n">hdr_list_entry</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">le</span><span class="o">-></span><span class="n">hdr</span> <span class="o">=</span> <span class="n">pj_pool_alloc</span><span class="p">(</span><span class="n">pool</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="n">pjsip_generic_string_hdr</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">pjsip_generic_string_hdr_init2</span><span class="p">((</span><span class="n">pjsip_generic_string_hdr</span> <span class="o">*</span><span class="p">)</span><span class="n">le</span><span class="o">-></span><span class="n">hdr</span><span class="p">,</span> <span class="n">pj_header_name</span><span class="p">,</span> <span class="n">pj_header_value</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="n">hdr_list</span> <span class="o">*</span><span class="n">list</span> <span class="o">=</span> <span class="n">datastore</span><span class="o">-></span><span class="n">data</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;">See https://wiki.asterisk.org/wiki/display/AST/Coding+Guidelines#CodingGuidelines-GeneralRules first bullet point.
The indentation of the middle two statements is different from the others in this selection. It appears you may have used four spaces to indent instead of a tab.</pre>
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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="k">if</span> <span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="n">len</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">==</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="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="n">le</span><span class="o">-></span><span class="n">hdr</span><span class="o">-></span><span class="n">name</span><span class="p">.</span><span class="n">slen</span> <span class="o">==</span> <span class="n">len</span><span class="o">-</span><span class="mi">1</span> <span class="o">&&</span> <span class="n">pj_strnicmp2</span><span class="p">(</span><span class="o">&</span><span class="n">le</span><span class="o">-></span><span class="n">hdr</span><span class="o">-></span><span class="n">name</span><span class="p">,</span> <span class="n">data</span><span class="p">,</span> <span class="n">len</span><span class="o">-</span><span class="mi">1</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</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;">Place spaces around the - signs used on these two lines.</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line373" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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(Diff revision 1)
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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="k">if</span> <span class="p">(</span><span class="n">le</span><span class="o">-></span><span class="n">hdr</span><span class="o">-></span><span class="n">name</span><span class="p">.</span><span class="n">slen</span> <span class="o">==</span> <span class="n">len</span><span class="o">-</span><span class="mi">1</span> <span class="o">&&</span> <span class="n">pj_strnicmp2</span><span class="p">(</span><span class="o">&</span><span class="n">le</span><span class="o">-></span><span class="n">hdr</span><span class="o">-></span><span class="n">name</span><span class="p">,</span> <span class="n">data</span><span class="p">,</span> <span class="n">len</span><span class="o">-</span><span class="mi">1</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</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;">Instead of checking length and using pj_strnicmp2(), just use pjstricmp()</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line413" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm">/*!</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * \internal</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * \brief Session supplement callback for session destroy.</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> *</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * Destroy the hdr_list so the mutex gets freed.</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * The memory was from the pj_pool so no need to free it.</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> */</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="kt">void</span> <span class="nf">session_destroy</span><span class="p">(</span><span class="k">struct</span> <span class="n">ast_sip_session</span> <span class="o">*</span><span class="n">session</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; "><span class="tb"> </span><span class="n">RAII_VAR</span><span class="p">(</span><span class="k">struct</span> <span class="n">ast_datastore</span> <span class="o">*</span><span class="p">,</span> <span class="n">datastore</span><span class="p">,</span> <span class="n">ast_sip_session_get_datastore</span><span class="p">(</span><span class="n">session</span><span class="p">,</span> <span class="n">header_datastore</span><span class="p">.</span><span class="n">type</span><span class="p">),</span> <span class="n">ao2_cleanup</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="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">datastore</span> <span class="o">||</span> <span class="o">!</span><span class="n">datastore</span><span class="o">-></span><span class="n">data</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="tb"> </span><span class="tb"> </span><span class="k">return</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="n">AST_LIST_HEAD_DESTROY</span><span class="p">((</span><span class="n">hdr_list</span> <span class="o">*</span><span class="p">)</span><span class="n">datastore</span><span class="o">-></span><span class="n">data</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;">A better way of doing this would be to set a destroy callback in header_datastore. That way, you'll get called into when the datastore is destroyed, and you'll be given the datastore->data as the argument in the callback.</pre>
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<a href="https://reviewboard.asterisk.org/r/2858/diff/1/?file=45986#file45986line430" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_pjsip_header_funcs.c</a>
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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="p">.</span><span class="n">method</span> <span class="o">=</span> <span class="s">"INVITE,UPDATE"</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;">Hm, I'm not so sure that UPDATE is correct here.</pre>
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<p>- Mark</p>
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<p>On September 16th, 2013, 12:34 a.m. UTC, George Joseph wrote:</p>
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<div>Review request for Asterisk Developers and Mark Michelson.</div>
<div>By George Joseph.</div>
<p style="color: grey;"><i>Updated Sept. 16, 2013, 12:34 a.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-22498">ASTERISK-22498</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;">For PJSIP_HEADER, an incoming supplemental session callback is registered that takes the pjsip_hdrs from the incoming session and stores them in a linked list in the session datastore. Calls to PJSIP_HEADER traverse over the list and return the nth matching header where 'n' is the 'number' argument to the function.
For PJSIPAddHeader, the first call creates a datastore and linked list and adds the datastore to the session. The header is then created as a pjsip_hdr and added to the list. An outgoing supplemental session callback then traverses the list and adds the headers to the outgoing pjsip_msg.
For PJSIPRemoveHeader, the list created with PJSIPAddHeader is traversed and all matching entries are removed. As with SIPRemoveHeader, an empty arguments removes all headers previously added.
Rather than cloning the incoming pjsip_msg or using pjsip_msg to accumulate the outgoing headers, I used a simple AST_LIST. There was a lot of overhead with the clone functions and some tricky behavior with the pjsip_msg/pjsip_hdr internal lists. Using the AST_LISTs cut down on both instructions and memory.
All memory allocation is from the pj_pool attached to the session.</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;">Tested successfully...
PJSIP_HEADER return the full value of nth specified header from either the incoming session, or headers previously added to the outgoing session by PJSIPHeader.
PJSIP_HEADER fails if there was no header specified in the function call.
PJSIP_HEADER fails if there was no datastore on the incoming session (should never happen).
PJSIP_HEADER fails if the nth header wasn't found.
PJSIPAddHeader adds a pjsip_hdr structure to the linked list when the input string is properly formatted as "header_name:\s*header_value".
PJSIPAddHeader fails if no ':' was found in the input string.
PJSIPAddHeader fails if after parsing either the header name or value is empty.
PJSIPRemoveHeader removes all matching headers from the linked list when a partial header name is specified.
PJSIPRemoveHeader removes all matching headers from the linked list when a full header is specified with a trailing ':'.
PJSIPRemoveHeader removes all previously added header from the linked list when no header is specified.
PJSIPRemoveHeader returns successfully (silently) if there was no linked list.
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/branches/12/res/res_pjsip_header_funcs.c <span style="color: grey">(PRE-CREATION)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2858/diff/" style="margin-left: 3em;">View Diff</a></p>
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