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  • Evolution #3973 : Brancher inc/distant recuperer_url() sur une librairie récente

    20 février 2019, par Eric Camus

    Bonjour,
    Suite à un changement de machine pour nos SPIP (de WIMP vers LAMP (centos)) de nombreux flux RSS ne fonctionnaient plus, la cause : la fonction ’recuperer_url’ !!!.
    J’ai donc réécrit le corps de cette fonction avec la biblio PHP CURL a partir du code dans SPIP 3.2.0 (je sais que je suis en retard d’une version).
    Je vous le livre comme je viens de le finir après un léger debug.

    1. <span class="CodeRay"><span class="keyword">function</span> <span class="function">recuperer_url</span>(<span class="local-variable">$url</span>, <span class="local-variable">$options</span> = <span class="predefined">array</span>()) {
      2. 

    2.     <span class="local-variable">$default</span> = <span class="predefined">array</span>(
      3. 

    3.         <span class="string"><span class="delimiter">'</span><span class="content">transcoder</span><span class="delimiter">'</span></span> => <span class="predefined-constant">false</span>,
      4. 

    4.         <span class="string"><span class="delimiter">'</span><span class="content">methode</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="content">GET</span><span class="delimiter">'</span></span>,
      5. 

    5.         <span class="string"><span class="delimiter">'</span><span class="content">taille_max</span><span class="delimiter">'</span></span> => <span class="predefined-constant">null</span>,
      6. 

    6.         <span class="string"><span class="delimiter">'</span><span class="content">datas</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>,
      7. 

    7.         <span class="string"><span class="delimiter">'</span><span class="content">boundary</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>,
      8. 

    8.         <span class="string"><span class="delimiter">'</span><span class="content">refuser_gz</span><span class="delimiter">'</span></span> => <span class="predefined-constant">false</span>,
      9. 

    9.         <span class="string"><span class="delimiter">'</span><span class="content">if_modified_since</span><span class="delimiter">'</span></span> => <span class="integer">0</span>,
      10. 

    10.         <span class="string"><span class="delimiter">'</span><span class="content">uri_referer</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>,
      11. 

    11.         <span class="string"><span class="delimiter">'</span><span class="content">file</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>,
      12. 

    12.         <span class="string"><span class="delimiter">'</span><span class="content">follow_location</span><span class="delimiter">'</span></span> => <span class="integer">10</span>,
      13. 

    13.         <span class="string"><span class="delimiter">'</span><span class="content">version_http</span><span class="delimiter">'</span></span> => _INC_DISTANT_VERSION_HTTP,
      14. 

    14.     );
      15. 

    15.     <span class="local-variable">$options</span> = <span class="predefined">array_merge</span>(<span class="local-variable">$default</span>, <span class="local-variable">$options</span>);
      16. 

    16.     <span class="comment">// copier directement dans un fichier ?</span>
      17. 

    17.     <span class="local-variable">$copy</span> = <span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">file</span><span class="delimiter">'</span></span>];
      18. 

    18.  
      19. 

    19.     <span class="keyword">if</span> (<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">methode</span><span class="delimiter">'</span></span>] == <span class="string"><span class="delimiter">'</span><span class="content">HEAD</span><span class="delimiter">'</span></span>) {
      20. 

    20.         <span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">taille_max</span><span class="delimiter">'</span></span>] = <span class="integer">0</span>;
      21. 

    21.     }
      22. 

    22.     <span class="keyword">if</span> (<span class="predefined">is_null</span>(<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">taille_max</span><span class="delimiter">'</span></span>])) {
      23. 

    23.         <span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">taille_max</span><span class="delimiter">'</span></span>] = <span class="local-variable">$copy</span> ? _COPIE_LOCALE_MAX_SIZE : _INC_DISTANT_MAX_SIZE;
      24. 

    24.     }
      25. 

    25.  
      26. 

    26.     <span class="comment">// Accepter les URLs au format feed:// ou qui ont oublie le http:// ou les urls relatives au protocole</span>
      27. 

    27.     <span class="local-variable">$url</span> = <span class="predefined">preg_replace</span>(<span class="string"><span class="delimiter">'</span><span class="content">,^feed://,i</span><span class="delimiter">'</span></span>, <span class="string"><span class="delimiter">'</span><span class="content">http://</span><span class="delimiter">'</span></span>, <span class="local-variable">$url</span>);
      28. 

    28.     <span class="keyword">if</span> (!tester_url_absolue(<span class="local-variable">$url</span>)) {
      29. 

    29.         <span class="local-variable">$url</span> = <span class="string"><span class="delimiter">'</span><span class="content">http://</span><span class="delimiter">'</span></span> . <span class="local-variable">$url</span>;
      30. 

    30.     } <span class="keyword">elseif</span> (<span class="predefined">strncmp</span>(<span class="local-variable">$url</span>, <span class="string"><span class="delimiter">'</span><span class="content">//</span><span class="delimiter">'</span></span>, <span class="integer">2</span>) == <span class="integer">0</span>) {
      31. 

    31.         <span class="local-variable">$url</span> = <span class="string"><span class="delimiter">'</span><span class="content">http:</span><span class="delimiter">'</span></span> . <span class="local-variable">$url</span>;
      32. 

    32.     }
      33. 

    33.  
      34. 

    34.     <span class="local-variable">$url</span> = url_to_ascii(<span class="local-variable">$url</span>);
      35. 

    35.  
      36. 

    36.     <span class="local-variable">$result</span> = <span class="predefined">array</span>(
      37. 

    37.         <span class="string"><span class="delimiter">'</span><span class="content">status</span><span class="delimiter">'</span></span> => <span class="integer">0</span>,
      38. 

    38.         <span class="string"><span class="delimiter">'</span><span class="content">headers</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>,
      39. 

    39.         <span class="string"><span class="delimiter">'</span><span class="content">page</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>,
      40. 

    40.         <span class="string"><span class="delimiter">'</span><span class="content">length</span><span class="delimiter">'</span></span> => <span class="integer">0</span>,
      41. 

    41.         <span class="string"><span class="delimiter">'</span><span class="content">last_modified</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>,
      42. 

    42.         <span class="string"><span class="delimiter">'</span><span class="content">location</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>,
      43. 

    43.         <span class="string"><span class="delimiter">'</span><span class="content">url</span><span class="delimiter">'</span></span> => <span class="local-variable">$url</span>
      44. 

    44.     );
      45. 

    45.  
      46. 

    46.     <span class="local-variable">$pCurl</span>=curl_init(<span class="local-variable">$url</span>);
      47. 

    47.     curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_HTTP_VERSION</span>,<span class="constant">CURL_HTTP_VERSION_1_1</span>);
      48. 

    48.     curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_SSL_VERIFYPEER</span>,<span class="predefined-constant">false</span>);
      49. 

    49.     curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_RETURNTRANSFER</span>,<span class="predefined-constant">true</span>);
      50. 

    50.     curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_FOLLOWLOCATION</span>,<span class="predefined-constant">true</span>);
      51. 

    51.     curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_TIMEOUT</span>,<span class="integer">30</span>);  <span class="comment">// timeout 30s</span>
      52. 

    52.     <span class="keyword">if</span> (!<span class="predefined">empty</span>(<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">datas</span><span class="delimiter">'</span></span>])) {  <span class="comment">// des datas</span>
      53. 

    53.         curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_POST</span>,<span class="predefined-constant">true</span>);
      54. 

    54.         curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_SAFE_UPLOAD</span>,<span class="predefined-constant">true</span>);
      55. 

    55.         curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_POSTFIELDS</span>,<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">datas</span><span class="delimiter">'</span></span>]);
      56. 

    56.         <span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">methode</span><span class="delimiter">'</span></span>]=<span class="string"><span class="delimiter">'</span><span class="content">POST</span><span class="delimiter">'</span></span>;
      57. 

    57.     }
      58. 

    58.     <span class="keyword">if</span>(<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">methode</span><span class="delimiter">'</span></span>]==<span class="string"><span class="delimiter">'</span><span class="content">HEAD</span><span class="delimiter">'</span></span>) {
      59. 

    59.         curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_NOBODY</span>,<span class="predefined-constant">true</span>);
      60. 

    60.         <span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">taille_max</span><span class="delimiter">'</span></span>]=<span class="integer">0</span>;  <span class="comment">// pas de taille</span>
      61. 

    61.         <span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">if_modified_since</span><span class="delimiter">'</span></span>]=<span class="integer">0</span>;  <span class="comment">// pas de date de modif</span>
      62. 

    62.         <span class="local-variable">$copy</span>=<span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>;  <span class="comment">// pas de copie dans fichier</span>
      63. 

    63.     }
      64. 

    64.     <span class="keyword">if</span>(<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">if_modified_since</span><span class="delimiter">'</span></span>]><span class="integer">0</span>) {
      65. 

    65.         curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_TIMEVALUE</span>,<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">if_modified_since</span><span class="delimiter">'</span></span>]);
      66. 

    66.     }
      67. 

    67.     <span class="keyword">if</span>(<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">taille_max</span><span class="delimiter">'</span></span>]><span class="integer">0</span>) {
      68. 

    68.         curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_RANGE</span>,<span class="string"><span class="delimiter">'</span><span class="content">0-</span><span class="delimiter">'</span></span>.<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">taille_max</span><span class="delimiter">'</span></span>]);
      69. 

    69.     }
      70. 

    70.     <span class="keyword">if</span>(<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">uri_referer</span><span class="delimiter">'</span></span>]) {
      71. 

    71.         curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_REFERER</span>,<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">uri_referer</span><span class="delimiter">'</span></span>]);
      72. 

    72.     }
      73. 

    73.     <span class="local-variable">$opt_header</span>=<span class="predefined-constant">true</span>;
      74. 

    74.     <span class="local-variable">$fheader</span>=<span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>;  <span class="comment">// nom du fichier contenant le header</span>
      75. 

    75.     <span class="keyword">if</span>(<span class="local-variable">$copy</span>) {
      76. 

    76.         <span class="local-variable">$fc</span>=<span class="predefined">fopen</span>(<span class="local-variable">$copy</span>,<span class="string"><span class="delimiter">'</span><span class="content">w</span><span class="delimiter">'</span></span>);
      77. 

    77.         <span class="keyword">if</span>(<span class="local-variable">$fc</span>) {
      78. 

    78.             <span class="local-variable">$fheader</span>=_DIR_TMP.<span class="predefined">md5</span>(<span class="local-variable">$copy</span>).<span class="string"><span class="delimiter">'</span><span class="content">_head.txt</span><span class="delimiter">'</span></span>;
      79. 

    79.             <span class="local-variable">$fh</span>=<span class="predefined">fopen</span>(<span class="local-variable">$fheader</span>,<span class="string"><span class="delimiter">'</span><span class="content">w</span><span class="delimiter">'</span></span>);
      80. 

    80.             <span class="keyword">if</span>(<span class="local-variable">$fh</span>) {
      81. 

    81.                 curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_FILE</span>,<span class="local-variable">$fc</span>);
      82. 

    82.                 curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_WRITEHEADER</span>,<span class="local-variable">$fh</span>);
      83. 

    83.                 <span class="local-variable">$opt_header</span>=<span class="predefined-constant">false</span>;
      84. 

    84.             }
      85. 

    85.             <span class="keyword">else</span> {
      86. 

    86.                 <span class="predefined">fclose</span>(<span class="local-variable">$fc</span>);
      87. 

    87.             }
      88. 

    88.         }
      89. 

    89.     }
      90. 

    90.     curl_setopt(<span class="local-variable">$pCurl</span>,<span class="constant">CURLOPT_HEADER</span>,<span class="local-variable">$opt_header</span>);
      91. 

    91.     <span class="local-variable">$cont</span>=curl_exec(<span class="local-variable">$pCurl</span>);
      92. 

    92.     <span class="local-variable">$info</span>=curl_getinfo(<span class="local-variable">$pCurl</span>);
      93. 

    93.     curl_close(<span class="local-variable">$pCurl</span>);  <span class="comment">// fermer curl</span>
      94. 

    94.     <span class="keyword">if</span>(<span class="local-variable">$fc</span>) {
      95. 

    95.         <span class="predefined">fclose</span>(<span class="local-variable">$fc</span>);  <span class="comment">// fermer fichier</span>
      96. 

    96.         <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">file</span><span class="delimiter">'</span></span>]=<span class="local-variable">$copy</span>;
      97. 

    97.     }
      98. 

    98.     <span class="keyword">if</span>(<span class="local-variable">$fh</span>) {
      99. 

    99.         <span class="predefined">fclose</span>(<span class="local-variable">$fh</span>);
      100. 

    100.     }
      101. 

    101.     <span class="keyword">if</span>(<span class="local-variable">$cont</span>===<span class="predefined-constant">false</span>) {
      102. 

    102.         spip_log(<span class="string"><span class="delimiter">'</span><span class="content">ECHEC CURL </span><span class="delimiter">'</span></span>.<span class="local-variable">$url</span>,_LOG_ERREUR);
      103. 

    103.         <span class="keyword">if</span>(<span class="predefined">file_exists</span>(<span class="local-variable">$copy</span>)) <span class="predefined">unlink</span>(<span class="local-variable">$copy</span>);  <span class="comment">// suppr fichier sur erreur</span>
      104. 

    104.         <span class="keyword">if</span>(<span class="predefined">file_exists</span>(<span class="local-variable">$fheader</span>)) <span class="predefined">unlink</span>(<span class="local-variable">$fheader</span>);
      105. 

    105.         <span class="keyword">return</span> <span class="predefined-constant">false</span>;
      106. 

    106.     }
      107. 

    107.     <span class="comment">// on range le tout dans la var $result</span>
      108. 

    108.     <span class="local-variable">$body</span>=<span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>;
      109. 

    109.     <span class="local-variable">$head</span>=<span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>;
      110. 

    110.     <span class="keyword">if</span>(<span class="local-variable">$cont</span>!==<span class="predefined-constant">true</span>) {  <span class="comment">// cas de demande par fichier</span>
      111. 

    111.         <span class="keyword">if</span>(<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">methode</span><span class="delimiter">'</span></span>]==<span class="string"><span class="delimiter">'</span><span class="content">HEAD</span><span class="delimiter">'</span></span>) {
      112. 

    112.             <span class="local-variable">$head</span>=<span class="local-variable">$cont</span>;
      113. 

    113.         }
      114. 

    114.         <span class="keyword">else</span> {
      115. 

    115.             <span class="keyword">if</span>(<span class="predefined">isset</span>(<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">download_content_length</span><span class="delimiter">'</span></span>]) <span class="keyword">and</span> <span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">download_content_length</span><span class="delimiter">'</span></span>]><span class="integer">0</span>) {
      116. 

    116.                 <span class="local-variable">$body</span>=<span class="predefined">substr</span>(<span class="local-variable">$cont</span>,-<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">download_content_length</span><span class="delimiter">'</span></span>]);
      117. 

    117.                 <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">length</span><span class="delimiter">'</span></span>]=<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">download_content_length</span><span class="delimiter">'</span></span>];
      118. 

    118.             }
      119. 

    119.             <span class="keyword">elseif</span>(<span class="predefined">isset</span>(<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">size_download</span><span class="delimiter">'</span></span>]) <span class="keyword">and</span> <span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">size_download</span><span class="delimiter">'</span></span>]><span class="integer">0</span>) {
      120. 

    120.                 <span class="local-variable">$body</span>=<span class="predefined">substr</span>(<span class="local-variable">$cont</span>,-<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">size_download</span><span class="delimiter">'</span></span>]);
      121. 

    121.                 <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">length</span><span class="delimiter">'</span></span>]=<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">size_download</span><span class="delimiter">'</span></span>];
      122. 

    122.             }
      123. 

    123.             <span class="keyword">if</span>(<span class="predefined">isset</span>(<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">header_size</span><span class="delimiter">'</span></span>]) <span class="keyword">and</span> <span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">header_size</span><span class="delimiter">'</span></span>]><span class="integer">0</span>) {
      124. 

    124.                 <span class="local-variable">$head</span>=<span class="predefined">substr</span>(<span class="local-variable">$cont</span>,<span class="integer">0</span>,<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">header_size</span><span class="delimiter">'</span></span>]);
      125. 

    125.                 <span class="keyword">if</span>(<span class="local-variable">$body</span>==<span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>) {  <span class="comment">// cas ou download_content_length=-1 !!!!!!</span>
      126. 

    126.                     <span class="local-variable">$body</span>=<span class="predefined">substr</span>(<span class="local-variable">$cont</span>,<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">header_size</span><span class="delimiter">'</span></span>]);
      127. 

    127.                     <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">length</span><span class="delimiter">'</span></span>]=<span class="predefined">strlen</span>(<span class="local-variable">$body</span>);  <span class="comment">// pare absence</span>
      128. 

    128.                 }
      129. 

    129.             }
      130. 

    130.         }
      131. 

    131.     }
      132. 

    132.     <span class="keyword">if</span>(<span class="local-variable">$fheader</span> <span class="keyword">and</span> <span class="predefined">file_exists</span>(<span class="local-variable">$fheader</span>)) {  <span class="comment">// si un fichier de header est fait</span>
      133. 

    133.         <span class="local-variable">$head</span>=<span class="predefined">file_get_contents</span>(<span class="local-variable">$fheader</span>);
      134. 

    134.         <span class="predefined">unlink</span>(<span class="local-variable">$fheader</span>);
      135. 

    135.     }
      136. 

    136.     <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">status</span><span class="delimiter">'</span></span>]=<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">http_code</span><span class="delimiter">'</span></span>];
      137. 

    137.     <span class="keyword">if</span>(<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">http_code</span><span class="delimiter">'</span></span>]==<span class="integer">206</span>) <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">status</span><span class="delimiter">'</span></span>]=<span class="integer">200</span>;  <span class="comment">// SPIP refuse les partial content alors qu'il les demande</span>
      138. 

    138.     <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">headers</span><span class="delimiter">'</span></span>]=<span class="local-variable">$head</span>;
      139. 

    139.     <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">page</span><span class="delimiter">'</span></span>]=<span class="local-variable">$body</span>;
      140. 

    140.     <span class="keyword">if</span>(<span class="predefined">isset</span>(<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">download_content_length</span><span class="delimiter">'</span></span>]) <span class="keyword">and</span> <span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">download_content_length</span><span class="delimiter">'</span></span>]><span class="integer">0</span>) {
      141. 

    141.         <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">length</span><span class="delimiter">'</span></span>]=<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">download_content_length</span><span class="delimiter">'</span></span>];
      142. 

    142.     }
      143. 

    143.     <span class="keyword">elseif</span>(<span class="predefined">isset</span>(<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">size_download</span><span class="delimiter">'</span></span>]) <span class="keyword">and</span> <span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">size_download</span><span class="delimiter">'</span></span>]><span class="integer">0</span>) {
      144. 

    144.         <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">length</span><span class="delimiter">'</span></span>]=<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">size_download</span><span class="delimiter">'</span></span>];
      145. 

    145.     }
      146. 

    146.     <span class="keyword">if</span>(<span class="predefined">isset</span>(<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">url</span><span class="delimiter">'</span></span>]) <span class="keyword">and</span> <span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">url</span><span class="delimiter">'</span></span>]!=<span class="local-variable">$url</span>) <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">location</span><span class="delimiter">'</span></span>]=<span class="local-variable">$info</span>[<span class="string"><span class="delimiter">'</span><span class="content">url</span><span class="delimiter">'</span></span>];
      147. 

    147.     <span class="keyword">if</span>(<span class="local-variable">$head</span>) {  <span class="comment">// analyse de head pour info</span>
      148. 

    148.         <span class="local-variable">$trouve</span>=<span class="predefined">array</span>(<span class="string"><span class="delimiter">'</span><span class="content">Content-Length</span><span class="delimiter">'</span></span>=><span class="string"><span class="delimiter">'</span><span class="content">length</span><span class="delimiter">'</span></span>,  <span class="comment">// texte avant : => cle du $result</span>
      149. 

    149.                      <span class="string"><span class="delimiter">'</span><span class="content">Last-Modified</span><span class="delimiter">'</span></span>=><span class="string"><span class="delimiter">'</span><span class="content">last_modified</span><span class="delimiter">'</span></span>,
      150. 

    150.                      <span class="string"><span class="delimiter">'</span><span class="content">Accept-Ranges</span><span class="delimiter">'</span></span>=><span class="string"><span class="delimiter">'</span><span class="content">range</span><span class="delimiter">'</span></span>);
      151. 

    151.         <span class="local-variable">$liste</span>=<span class="predefined">preg_split</span>(<span class="string"><span class="delimiter">'</span><span class="content">/[</span><span class="content">\r</span><span class="content">\n</span><span class="content">]+/</span><span class="delimiter">'</span></span>,<span class="local-variable">$head</span>,-<span class="integer">1</span>,<span class="constant">PREG_SPLIT_NO_EMPTY</span>);
      152. 

    152.         <span class="keyword">if</span>(<span class="predefined">is_array</span>(<span class="local-variable">$liste</span>)) {
      153. 

    153.             <span class="local-variable">$liste</span>=<span class="predefined">array_reverse</span>(<span class="local-variable">$liste</span>);
      154. 

    154.             <span class="keyword">foreach</span>(<span class="local-variable">$liste</span> <span class="keyword">as</span> <span class="local-variable">$l</span>) {  <span class="comment">// premier trouver donc dernier dans le head</span>
      155. 

    155.                 <span class="local-variable">$lt</span>=<span class="predefined">trim</span>(<span class="local-variable">$l</span>);
      156. 

    156.                 <span class="keyword">if</span>(<span class="predefined">strlen</span>(<span class="local-variable">$lt</span>)><span class="integer">5</span> <span class="keyword">and</span> <span class="predefined">substr</span>(<span class="local-variable">$lt</span>,<span class="integer">0</span>,<span class="integer">4</span>)==<span class="string"><span class="delimiter">'</span><span class="content">HTTP</span><span class="delimiter">'</span></span>) <span class="keyword">break</span>;  <span class="comment">// on arrete sur derniere entete HTTP ?</span>
      157. 

    157.                 <span class="local-variable">$item</span>=<span class="predefined">explode</span>(<span class="string"><span class="delimiter">'</span><span class="content">:</span><span class="delimiter">'</span></span>,<span class="local-variable">$lt</span>,<span class="integer">2</span>);
      158. 

    158.                 <span class="keyword">if</span>(<span class="predefined">isset</span>(<span class="local-variable">$item</span>[<span class="integer">0</span>]) <span class="keyword">and</span> <span class="predefined">isset</span>(<span class="local-variable">$trouve</span>[<span class="local-variable">$item</span>[<span class="integer">0</span>]])) {
      159. 

    159.                     <span class="local-variable">$result</span>[<span class="local-variable">$trouve</span>[<span class="local-variable">$item</span>[<span class="integer">0</span>]]]=<span class="predefined">trim</span>(<span class="local-variable">$item</span>[<span class="integer">1</span>]);
      160. 

    160.                     <span class="predefined">unset</span>(<span class="local-variable">$trouve</span>[<span class="local-variable">$item</span>[<span class="integer">0</span>]]);  <span class="comment">// plus d'autre a chercher</span>
      161. 

    161.                 }
      162. 

    162.             }
      163. 

    163.         }
      164. 

    164.         <span class="comment">// cas particuliers</span>
      165. 

    165.         <span class="keyword">if</span>(<span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">last_modified</span><span class="delimiter">'</span></span>]) {
      166. 

    166.             <span class="local-variable">$val</span>=<span class="predefined">strtotime</span>(<span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">last_modified</span><span class="delimiter">'</span></span>]);
      167. 

    167.             <span class="keyword">if</span>(<span class="local-variable">$val</span>===<span class="predefined-constant">false</span>) {
      168. 

    168.                 <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">last_modified</span><span class="delimiter">'</span></span>]=<span class="string"><span class="delimiter">'</span><span class="delimiter">'</span></span>;
      169. 

    169.             }
      170. 

    170.             <span class="keyword">else</span> {
      171. 

    171.                 <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">last_modified</span><span class="delimiter">'</span></span>]=<span class="local-variable">$val</span>;
      172. 

    172.             }
      173. 

    173.         }
      174. 

    174.     }
      175. 

    175.  
      176. 

    176.     <span class="comment">// Faut-il l'importer dans notre charset local ?</span>
      177. 

    177.     <span class="keyword">if</span> (<span class="local-variable">$options</span>[<span class="string"><span class="delimiter">'</span><span class="content">transcoder</span><span class="delimiter">'</span></span>]) {
      178. 

    178.         include_spip(<span class="string"><span class="delimiter">'</span><span class="content">inc/charsets</span><span class="delimiter">'</span></span>);
      179. 

    179.         <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">page</span><span class="delimiter">'</span></span>] = transcoder_page(<span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">page</span><span class="delimiter">'</span></span>], <span class="local-variable">$result</span>[<span class="string"><span class="delimiter">'</span><span class="content">headers</span><span class="delimiter">'</span></span>]);
      180. 

    180.     }
      181. 

    181.  
      182. 

    182.     <span class="keyword">return</span> <span class="local-variable">$result</span>;
      183. 

    183. }
      184. 

    184. </span>
      185. 

    Télécharger

    Normalement, ce code doit être compatible avec l’ancienne fonction, il donne en plus en sortie [’range’] qui permet de savoir si un partial content peut être délivré.
    Il ne prend plus en compte les entrées [’refuser_gz’], [’version_http’] et [’boundary’] et l’entrée [’data’] doit être compatible avec celle de ’curl_setopt : CURLOPT_POSTFIELDS’.
    Si des gens veulent la tester et l’améliorer : bienvenue.

    Petit nota : SPIP laisse le fichier créer dans cette fonction ([’file’]) dans le tmp sans le détruire (version de base idem) : accumulation !

  • build ffmpeg on ubuntu : build nasm fails

    6 février 2019, par Rakka Rage

    trying to build ffmpeg on ubuntu 18.10

    https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu

    first install dependencies

    sudo apt-get update -qq &amp;&amp; sudo apt-get -y install \
    
autoconf \
    
automake \
    
build-essential \
    
cmake \
    
git-core \
    
libass-dev \
    
libfreetype6-dev \
    
libsdl2-dev \
    
libtool \
    
libva-dev \
    
libvdpau-dev \
    
libvorbis-dev \
    
libxcb1-dev \
    
libxcb-shm0-dev \
    
libxcb-xfixes0-dev \
    
pkg-config \
    
texinfo \
    
wget \
    
zlib1g-dev

    then make dirs

    mkdir -p ~/ffmpeg_sources ~/bin

    then build nasm

    cd ~/ffmpeg_sources &amp;&amp; \
    
wget https://www.nasm.us/pub/nasm/releasebuilds/2.13.03/nasm-2.13.03.tar.bz2 &amp;&amp; \
    
tar xjvf nasm-2.13.03.tar.bz2 &amp;&amp; \
    
cd nasm-2.13.03 &amp;&amp; \
    
./autogen.sh &amp;&amp; \
    
PATH="$HOME/bin:$PATH" ./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" &amp;&amp; \
    
make &amp;&amp; \
    
make install

    then error

    --2019-02-04 17:45:17--  https://www.nasm.us/pub/nasm/releasebuilds/2.13.03/nasm-2.13.03.tar.bz2
    
Resolving www.nasm.us (www.nasm.us)... 2607:7c80:54:e::136, 198.137.202.136
    
Connecting to www.nasm.us (www.nasm.us)|2607:7c80:54:e::136|:443... connected.
    
HTTP request sent, awaiting response... 200 OK
    
Length: 974491 (952K) [application/x-bzip2]
    
Saving to: ‘nasm-2.13.03.tar.bz2’
    

    
nasm-2.13.03.tar.bz2          100%[=================================================>] 951.65K  1.51MB/s    in 0.6s    
    

    
2019-02-04 17:45:18 (1.51 MB/s) - ‘nasm-2.13.03.tar.bz2’ saved [974491/974491]
    

    
nasm-2.13.03/
    
nasm-2.13.03/AUTHORS
    
nasm-2.13.03/TODO
    
nasm-2.13.03/headers/
    
nasm-2.13.03/headers/c
    
nasm-2.13.03/headers/mac
    
nasm-2.13.03/headers/perl
    
nasm-2.13.03/headers/doc
    
nasm-2.13.03/test/
    
nasm-2.13.03/test/objtest.asm
    
nasm-2.13.03/test/float8.asm
    
nasm-2.13.03/test/avx512cd.asm
    
nasm-2.13.03/test/br890790_i.asm
    
nasm-2.13.03/test/avx.asm
    
nasm-2.13.03/test/pushseg.asm
    
nasm-2.13.03/test/br3074517.asm
    
nasm-2.13.03/test/inc2.asm
    
nasm-2.13.03/test/elfso.asm
    
nasm-2.13.03/test/br2222615.asm
    
nasm-2.13.03/test/local.asm
    
nasm-2.13.03/test/time.asm
    
nasm-2.13.03/test/smartalign64.asm
    
nasm-2.13.03/test/movimm.asm
    
nasm-2.13.03/test/elif.asm
    
nasm-2.13.03/test/absolute.asm
    
nasm-2.13.03/test/nullfile.asm
    
nasm-2.13.03/test/test67.asm
    
nasm-2.13.03/test/reldef.asm
    
nasm-2.13.03/test/jmp64.asm
    
nasm-2.13.03/test/addr64x.asm
    
nasm-2.13.03/test/weirdpaste.asm
    
nasm-2.13.03/test/newrdwr.asm
    
nasm-2.13.03/test/gas2nasm.py
    
nasm-2.13.03/test/br3104312.asm
    
nasm-2.13.03/test/br3041451.asm
    
nasm-2.13.03/test/xchg.asm
    
nasm-2.13.03/test/movnti.asm
    
nasm-2.13.03/test/br3385573.asm
    
nasm-2.13.03/test/testdos.asm
    
nasm-2.13.03/test/br3005117.asm
    
nasm-2.13.03/test/pcrel.asm
    
nasm-2.13.03/test/objexe.asm
    
nasm-2.13.03/test/immwarn.asm
    
nasm-2.13.03/test/smartalign16.asm
    
nasm-2.13.03/test/floatx.asm
    
nasm-2.13.03/test/pinsr64.asm
    
nasm-2.13.03/test/radix.asm
    
nasm-2.13.03/test/gotoff64.asm
    
nasm-2.13.03/test/elf64so.asm
    
nasm-2.13.03/test/smartalign32.asm
    
nasm-2.13.03/test/floatize.asm
    
nasm-2.13.03/test/lnxhello.asm
    
nasm-2.13.03/test/bisect.sh
    
nasm-2.13.03/test/fpu.asm
    
nasm-2.13.03/test/ptr.asm
    
nasm-2.13.03/test/br2496848.asm
    
nasm-2.13.03/test/binexe.asm
    
nasm-2.13.03/test/gather.asm
    
nasm-2.13.03/test/nop.asm
    
nasm-2.13.03/test/br560575.asm
    
nasm-2.13.03/test/uscore.asm
    
nasm-2.13.03/test/struc.asm
    
nasm-2.13.03/test/br3026808.asm
    
nasm-2.13.03/test/zerobyte.asm
    
nasm-2.13.03/test/avx005.asm
    
nasm-2.13.03/test/riprel.pl
    
nasm-2.13.03/test/iftoken.asm
    
nasm-2.13.03/test/times.asm
    
nasm-2.13.03/test/ifmacro.asm
    
nasm-2.13.03/test/br3392411.asm
    
nasm-2.13.03/test/br3392418.asm
    
nasm-2.13.03/test/riprel.asm
    
nasm-2.13.03/test/align13.asm
    
nasm-2.13.03/test/rdpid.asm
    
nasm-2.13.03/test/utf.asm
    
nasm-2.13.03/test/br3187743.asm
    
nasm-2.13.03/test/movd.asm
    
nasm-2.13.03/test/floatb.asm
    
nasm-2.13.03/test/inc1.asm
    
nasm-2.13.03/test/ilog2.asm
    
nasm-2.13.03/test/crc32.asm
    
nasm-2.13.03/test/org.asm
    
nasm-2.13.03/test/popcnt.asm
    
nasm-2.13.03/test/ifelse.asm
    
nasm-2.13.03/test/andbyte.asm
    
nasm-2.13.03/test/bintest.asm
    
nasm-2.13.03/test/imm64.asm
    
nasm-2.13.03/test/pinsr16.asm
    
nasm-2.13.03/test/ppindirect.asm
    
nasm-2.13.03/test/Makefile
    
nasm-2.13.03/test/br3392252.asm
    
nasm-2.13.03/test/elftest64.c
    
nasm-2.13.03/test/hexfp.asm
    
nasm-2.13.03/test/alonesym-obj.asm
    
nasm-2.13.03/test/br3092924.asm
    
nasm-2.13.03/test/br3392442.asm
    
nasm-2.13.03/test/loopoffs.asm
    
nasm-2.13.03/test/vex.asm
    
nasm-2.13.03/test/bcd.asm
    
nasm-2.13.03/test/iftoken.pl
    
nasm-2.13.03/test/br3189064.asm
    
nasm-2.13.03/test/br3392439.asm
    
nasm-2.13.03/test/cofftest.c
    
nasm-2.13.03/test/floatexp.asm
    
nasm-2.13.03/test/mpx-64.asm
    
nasm-2.13.03/test/elftest.asm
    
nasm-2.13.03/test/avx512pf.asm
    
nasm-2.13.03/test/xmm0.asm
    
nasm-2.13.03/test/br3392396.asm
    
nasm-2.13.03/test/ifenv.asm
    
nasm-2.13.03/test/insnlbl.asm
    
nasm-2.13.03/test/imm.asm
    
nasm-2.13.03/test/performtest.pl
    
nasm-2.13.03/test/br2148476.asm
    
nasm-2.13.03/test/imul.asm
    
nasm-2.13.03/test/br890790.asm
    
nasm-2.13.03/test/perf/
    
nasm-2.13.03/test/perf/macro.pl
    
nasm-2.13.03/test/perf/label.pl
    
nasm-2.13.03/test/perf/token.pl
    
nasm-2.13.03/test/br3392259.asm
    
nasm-2.13.03/test/br3392363.asm
    
nasm-2.13.03/test/macroerr.asm
    
nasm-2.13.03/test/br560873.asm
    
nasm-2.13.03/test/sreg.asm
    
nasm-2.13.03/test/br3200749.asm
    
nasm-2.13.03/test/xcrypt.asm
    
nasm-2.13.03/test/br3109604.asm
    
nasm-2.13.03/test/pragma.asm
    
nasm-2.13.03/test/objlink.c
    
nasm-2.13.03/test/vaesenc.asm
    
nasm-2.13.03/test/align13s.asm
    
nasm-2.13.03/test/br2030823.asm
    
nasm-2.13.03/test/imacro.asm
    
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nasm-2.13.03/config/watcom.h
    
nasm-2.13.03/config/msvc.h
    
nasm-2.13.03/config/config.h.in
    
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nasm-2.13.03/asm/quote.c
    
nasm-2.13.03/asm/segalloc.c
    
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nasm-2.13.03/asm/float.c
    
nasm-2.13.03/asm/exprlib.c
    
nasm-2.13.03/asm/phash.pl
    
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nasm-2.13.03/asm/directbl.c
    
nasm-2.13.03/asm/stdscan.h
    
nasm-2.13.03/asm/rdstrnum.c
    
nasm-2.13.03/asm/pptok.ph
    
nasm-2.13.03/asm/tokhash.pl
    
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nasm-2.13.03/rdoff/rdf2srec.1
    
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nasm-2.13.03/rdoff/test/rdftest1.asm
    
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nasm-2.13.03/rdoff/rdf2ith.1
    
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nasm-2.13.03/rdoff/README
    
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nasm-2.13.03/configure.ac
    
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nasm-2.13.03/x86/insns.pl
    
nasm-2.13.03/x86/regs.h
    
nasm-2.13.03/x86/regflags.c
    
nasm-2.13.03/x86/disp8.c
    
nasm-2.13.03/x86/regdis.h
    
nasm-2.13.03/x86/insnsn.c
    
nasm-2.13.03/x86/iflag.c
    
nasm-2.13.03/x86/insnsb.c
    
nasm-2.13.03/x86/regs.pl
    
nasm-2.13.03/x86/regdis.c
    
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nasm-2.13.03/x86/insnsd.c
    
nasm-2.13.03/x86/regs.c
    
nasm-2.13.03/x86/iflaggen.h
    
nasm-2.13.03/x86/regs.dat
    
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nasm-2.13.03/nasm.spec
    
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+ autoheader
    
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checking for io.h... no
    
checking fcntl.h usability... yes
    
checking fcntl.h presence... yes
    
checking for fcntl.h... yes
    
checking for unistd.h... (cached) yes
    
checking sys/param.h usability... yes
    
checking sys/param.h presence... yes
    
checking for sys/param.h... yes
    
checking sys/mman.h usability... yes
    
checking sys/mman.h presence... yes
    
checking for sys/mman.h... yes
    
checking for sys/types.h... (cached) yes
    
checking for sys/stat.h... (cached) yes
    
checking for strcasecmp... yes
    
checking for stricmp... no
    
checking for strncasecmp... yes
    
checking for strnicmp... no
    
checking for strsep... yes
    
checking for strnlen... yes
    
checking for getuid... yes
    
checking for getgid... yes
    
checking for realpath... yes
    
checking for canonicalize_file_name... yes
    
checking for _fullpath... no
    
checking for pathconf... yes
    
checking for _LARGEFILE_SOURCE value needed for large files... no
    
checking for _fseeki64... no
    
checking for ftruncate... yes
    
checking for _chsize... no
    
checking for _chsize_s... no
    
checking for fileno... yes
    
checking for _fileno... no
    
checking for _filelengthi64... no
    
checking for stdlib.h... (cached) yes
    
checking for unistd.h... (cached) yes
    
checking for sys/param.h... (cached) yes
    
checking for getpagesize... yes
    
checking for working mmap... yes
    
checking for getpagesize... (cached) yes
    
checking for sysconf... yes
    
checking for access... yes
    
checking for _access... no
    
checking for faccessat... yes
    
checking for __builtin_clz... yes
    
checking for __builtin_clzl... yes
    
checking for __builtin_clzll... yes
    
checking for __builtin_expect... yes
    
checking for vsnprintf... yes
    
checking for _vsnprintf... no
    
checking for snprintf... yes
    
checking for _snprintf... no
    
checking for strlcpy... no
    
checking for struct _stati64... no
    
checking for struct stat... yes
    
checking for stat... yes
    
checking for _stati64... no
    
checking for fstat... yes
    
checking for _fstati64... no
    
checking whether strcasecmp is declared... yes
    
checking whether stricmp is declared... no
    
checking whether strncasecmp is declared... yes
    
checking whether strnicmp is declared... no
    
checking whether strsep is declared... yes
    
checking whether strlcpy is declared... no
    
checking whether strnlen is declared... yes
    
checking for uintptr_t... yes
    
checking if gcc accepts -Werror=attributes... yes
    
checking if gcc supports the noreturn function attribute... yes
    
checking if gcc supports the returns_nonnull function attribute... yes
    
checking if gcc supports the malloc function attribute... yes
    
checking if gcc supports the alloc_size function attribute... yes
    
checking if gcc supports the format function attribute... yes
    
checking if gcc supports the const function attribute... yes
    
checking if gcc supports the pure function attribute... yes
    
checking if gcc supports the error function attribute... yes
    
checking if gcc accepts -W... yes
    
checking if gcc accepts -Wall... yes
    
checking if gcc accepts -pedantic... yes
    
checking if gcc accepts -Werror=unknown-warning-option... no
    
checking if gcc accepts -Wpedantic-ms-format... no
    
checking if gcc accepts -Wc90-c99-compat... yes
    
checking if gcc accepts -Wlong-long... yes
    
checking if gcc accepts -Werror=implicit... yes
    
checking if gcc accepts -Werror=missing-braces... yes
    
checking if gcc accepts -Werror=return-type... yes
    
checking if gcc accepts -Werror=trigraphs... yes
    
checking if gcc accepts -Werror=pointer-arith... yes
    
checking if gcc accepts -Werror=strict-prototypes... no
    
checking if gcc accepts -Werror=missing-prototypes... yes
    
checking if gcc accepts -Werror=missing-declarations... yes
    
checking if gcc accepts -Werror=comment... yes
    
checking if gcc accepts -Werror=vla... yes
    
configure: creating ./config.status
    
config.status: creating Makefile
    
config.status: creating doc/Makefile
    
config.status: creating config/config.h
    
config.status: executing default-1 commands
    
gcc -c -g -O3 -fwrapv -U__STRICT_ANSI__ -fno-common -Werror=attributes -W -Wall -pedantic -Wc90-c99-compat -Wno-long-long -Werror=implicit -Werror=missing-braces -Werror=return-type -Werror=trigraphs -Werror=pointer-arith -Werror=missing-prototypes -Werror=missing-declarations -Werror=comment -Werror=vla -DHAVE_CONFIG_H -I. -I. -I./include -I./include -I./x86 -I./x86 -I./asm -I./asm -I./disasm -I./disasm -I./output -I./output -o asm/nasm.o asm/nasm.c
    
In file included from ./include/nasm.h:46,
    
                from asm/nasm.c:47:
    
./include/nasmlib.h:194:1: error: ‘pure’ attribute on function returning ‘void’ [-Werror=attributes]
    
void pure_func seg_init(void);
    
^~~~
    
cc1: some warnings being treated as errors
    
make: *** [Makefile:75: asm/nasm.o] Error 1

    how can a build this ? disable warnings as errors somehow or ? idk
    please and thanks

  • ffmpeg, v4l, snd_aloop ... sound asyncron (alsa buffer xrun)

    28 janvier 2019, par Tobias

    I’m trying to create a stream that automatically reloads random inputs. I would like to extend this to a database later.

    Each time ffmpeg finishes and starts again, so the input changes, the connection to the rtmp is interrupted briefly causing the whole connection breaks down. I then tried to separate audio and video, to send them to virtual devices and read from there again. Split the stream on virtual devices, reassemble them directly and send them to rtmp. If the input is then exchanged, the sending to the devices interrupts what does not bother the second ffmpeg. As soon as I stop sending to the devices the fps go very slowly (10 - 20 sec) from 25 to 0. Only then does the transmitter ffmpeg break the connection to the rtmp. The script which exchanges the inputs needs only one second. A practical test showed that everything works as desired.

    I can quite comfortably change the input while the second ffmpeg maintains the stream ...

    The joy did not last long. The sound is good 1 sec delayed. But sporadically. Sometimes everything works great. Sometimes the sound is offset.

    I wrote several scripts for this.

    Background :

    1. File is selected by random
    2. Media file is split and written to / dev / video0 (v4l loopback) and alsa default (snd_aloop loopback)
    3. Put the splits together again and stream them to a rtmp server

    Code that selects the input and sends to / dev / video0 and alsa default

    #!/bin/bash
    

    
cat /dev/null > log
    

    
while true;
    
do
    

    
  WATERMARK="watermark.png";
    
  dir='/homeXXXXXXXXXX/mix'
    
  file=`/bin/ls -1 "$dir" | sort --random-sort | head -1`
    
  DATEI=`readlink --canonicalize "$dir/$file"` # Converts to full path
    

    
if [ -z $DATEI ]
    
then
    
  echo "Keine Datei gefunden" >> log;
    
else
    
  START=$(date +%s);
    
  echo "Sende $DATEI" >> log;
    
  ffmpeg -re -y -i "$DATEI" -c:v libx264 -vf "fps=25,scale=640:480,setdar=4:3" -async 1 -pix_fmt yuv420p -preset ultrafast -map 0:0 -f v4l2 -vcodec rawvideo /dev/video0 -f alsa default
    
fi
    

    
DOKILL=`cat kill`;
    
if [ "$DOKILL" = "1"]
    
then
    
  break;
    
fi
    

    
done

    The Output

    ./run.sh 
    
ffmpeg version 3.2.12-1~deb9u1 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
    
  configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/mix/XXXXXXXXXXXXX.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    title           : XXXXXXXXXXXXXXX 
    

    
    encoder         : Lavf57.41.100
    
  Duration: 00:03:53.48, start: 0.000000, bitrate: 2705 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 2573 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Codec AVOption preset (Configuration preset) specified for output file #0 (/dev/video0) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
    
[Parsed_setdar_2 @ 0x5571234fe020] num:den syntax is deprecated, please use num/den or named options instead
    
-async is forwarded to lavfi similarly to -af aresample=async=1:min_hard_comp=0.100000:first_pts=0.
    
Output #0, v4l2, to '/dev/video0':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    title           : XXXXXXXXXXX 
    

    
    encoder         : Lavf57.56.101
    
    Stream #0:0(und): Video: rawvideo (I420 / 0x30323449), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.64.101 rawvideo
    
Output #1, alsa, to 'default':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    title           : XXXXXXXXXX 
    

    
    encoder         : Lavf57.56.101
    
    Stream #1:0(und): Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc57.64.101 pcm_s16le
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> rawvideo (native))
    
  Stream #0:1 -> #1:0 (aac (native) -> pcm_s16le (native))
    
Press [q] to stop, [?] for help
    
frame=  736 fps= 24 q=-0.0 Lsize=N/A time=00:00:29.67 bitrate=N/A speed=0.979x    
    
video:331200kB audio:5112kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
Exiting normally, received signal 2.

    The send script

    #!/bin/bash
    

    
IP="XXXXXXXXX";
    

    
ffmpeg -f video4linux2 -i /dev/video0 -f alsa -acodec pcm_s16le -i default -f flv -async 1 -pix_fmt yuv420p -preset ultrafast -vcodec libx264 -r 25 -s 640x260 -acodec aac rtmp://$IP:1935/live/test

    The Output

    ./send_stream.sh 
    
ffmpeg version 3.2.12-1~deb9u1 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
    
  configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
Input #0, video4linux2,v4l2, from '/dev/video0':
    
  Duration: N/A, start: 1548393682.674066, bitrate: 110592 kb/s
    
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 640x480, 110592 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
    
Guessed Channel Layout for Input Stream #1.0 : stereo
    
Input #1, alsa, from 'default':
    
  Duration: N/A, start: 1548393682.677901, bitrate: 1536 kb/s
    
    Stream #1:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    
-async is forwarded to lavfi similarly to -af aresample=async=1:min_hard_comp=0.100000:first_pts=0.
    
[libx264 @ 0x55e22cfa4f00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0x55e22cfa4f00] profile Constrained Baseline, level 2.1
    
[libx264 @ 0x55e22cfa4f00] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
    
Output #0, flv, to 'rtmp://XXXXXXXXXXX:1935/live/test':
    
  Metadata:
    
    encoder         : Lavf57.56.101
    
    Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 640x260, q=-1--1, 25 fps, 1k tbn, 25 tbc
    
    Metadata:
    
      encoder         : Lavc57.64.101 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 128 kb/s
    
    Metadata:
    
      encoder         : Lavc57.64.101 aac
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
    
  Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[alsa @ 0x55e22cf87300] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
    
[video4linux2,v4l2 @ 0x55e22cf84fe0] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
    
Past duration 0.613319 too large    7344kB time=00:01:05.85 bitrate= 913.5kbits/s speed=1.04x    
    
Past duration 0.614372 too large    7644kB time=00:01:08.39 bitrate= 915.6kbits/s speed=1.04x    
    
Past duration 0.609749 too large    7834kB time=00:01:10.91 bitrate= 905.0kbits/s speed=1.04x    
    
Past duration 0.604362 too large    8038kB time=00:01:12.92 bitrate= 903.0kbits/s speed=1.04x    
    
Past duration 0.609489 too large    8070kB time=00:01:13.45 bitrate= 900.1kbits/s speed=1.04x    
    
Past duration 0.615013 too large    8094kB time=00:01:13.94 bitrate= 896.8kbits/s speed=1.04x    
    
Past duration 0.610893 too large    8179kB time=00:01:14.94 bitrate= 894.0kbits/s speed=1.04x    
    
Past duration 0.664711 too large
    
Past duration 0.639565 too large    8263kB time=00:01:15.47 bitrate= 896.8kbits/s speed=1.04x    
    
Past duration 0.668999 too large    8339kB time=00:01:15.94 bitrate= 899.5kbits/s speed=1.04x    
    
Past duration 0.605766 too large
    
Past duration 0.633049 too large    8399kB time=00:01:16.48 bitrate= 899.6kbits/s speed=1.04x    
    
Past duration 0.674599 too large
    
Past duration 0.616035 too large    8451kB time=00:01:16.95 bitrate= 899.7kbits/s speed=1.04x    
    
Past duration 0.656136 too large
    
Past duration 0.604195 too large
    
Past duration 0.601387 too large    8512kB time=00:01:17.46 bitrate= 900.2kbits/s speed=1.04x    
    
Past duration 0.621895 too large    8565kB time=00:01:17.95 bitrate= 900.1kbits/s speed=1.04x    
    
Past duration 0.670937 too large    8605kB time=00:01:18.46 bitrate= 898.4kbits/s speed=1.04x    
    
Past duration 0.604500 too large    8642kB time=00:01:18.99 bitrate= 896.2kbits/s speed=1.04x    
    
frame= 1913 fps= 25 q=-1.0 Lsize=    8670kB time=00:01:19.48 bitrate= 893.6kbits/s speed=1.04x    
    
video:7290kB audio:1280kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.160292%
    
[libx264 @ 0x55e22cfa4f00] frame I:8     Avg QP:18.25  size: 15502
    
[libx264 @ 0x55e22cfa4f00] frame P:1905  Avg QP:20.95  size:  3853
    
[libx264 @ 0x55e22cfa4f00] mb I  I16..4: 100.0%  0.0%  0.0%
    
[libx264 @ 0x55e22cfa4f00] mb P  I16..4:  6.4%  0.0%  0.0%  P16..4: 38.1%  0.0%  0.0%  0.0%  0.0%    skip:55.5%
    
[libx264 @ 0x55e22cfa4f00] coded y,uvDC,uvAC intra: 46.0% 30.3% 13.4% inter: 20.1% 9.8% 1.1%
    
[libx264 @ 0x55e22cfa4f00] i16 v,h,dc,p: 47% 34% 10%  9%
    
[libx264 @ 0x55e22cfa4f00] i8c dc,h,v,p: 45% 28% 22%  5%
    
[libx264 @ 0x55e22cfa4f00] kb/s:750.98
    
[aac @ 0x55e22cfa62a0] Qavg: 579.067
    
Exiting normally, received signal 2.

    First everything is fine and then comes

    Past duration 0.616035 too large    8451kB time=00:01:16.95 bitrate= 899.7kbits/s speed=1.04x    
    
Past duration 0.656136 too large
    
Past duration 0.604195 too large
    
Past duration 0.601387 too large    8512kB time=00:01:17.46 bitrate= 900.2kbits/s speed=1.04x

    And then when that comes, dives in the first window, so in the ffmpeg sends the input :

    Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> rawvideo (native))
    
  Stream #0:1 -> #1:0 (aac (native) -> pcm_s16le (native))
    
Press [q] to stop, [?] for help
    
frame=    9 fps=0.0 q=-0.0 size=N/A time=00:00:00.36 bitrate=N/A dup=1 drop=0 spframe=   21 fps= 21 q=-0.0 size=N/A time=00:00:00.84 bitrate=N/A dup=1 drop=0 sp[alsa @ 0x5643b3293160] ALSA buffer xrun.
    
    Last message repeated 1 times
    
frame=   33 fps= 22 q=-0.0 size=N/A time=00:00:01.32 bitrate=N/A dup=1 drop=0 sp[alsa @ 0x5643b3293160] ALSA buffer xrun.
    
    Last message repeated 1 times
    
frame=   46 fps= 23 q=-0.0 size=N/A time=00:00:01.84 bitrate=N/A dup=1 drop=0 spframe=   58 fps= 23 q=-0.0 size=N/A time=00:00:02.32 bitrate=N/A dup=1 drop=0 spframe=   71 fps= 24 q=-0.0 size=N/A time=00:00:02.84 bitrate=N/A dup=1 drop=0 spframe=   83 fps= 24 q=-0.0 size=N/A time=00:00:03.32 bitrate=N/A dup=1 drop=0 sp[alsa @ 0x5643b3293160] ALSA buffer xrun.
    
frame=   96 fps= 24 q=-0.0 size=N/A time=00:00:03.84 bitrate=N/A dup=1 drop=0 sp[alsa @ 0x5643b3293160] ALSA buffer xrun.

    The sound is then absolutely unsynchronized ...

    Does anyone have any advice and can help me ?

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