index.php

   1 <?php
   2 error_reporting(E_ALL);
   3
   4 require_once('inc/config.php');
   5
   6 /**
   7  * Formats "git diff" output into xhtml.
   8  * @return array(array of filenames, xhtml)
   9  */
  10 function format_diff($text)
  11 {
  12         $files = array();
  13
  14         // match every "^diff --git a/<path> b/<path>$" line
  15         foreach (explode("\n", $text) as $line) {
  16                 if (preg_match('#^diff --git a/(.*) b/(.*)$#', $line, $matches) > 0) {
  17                         $files[$matches[1]] = urlencode($matches[1]);
  18                 }
  19         }
  20
  21         $text = htmlentities($text);
  22
  23         $text = preg_replace(
  24                 array(
  25                         '/^(\+.*)$/m',
  26                         '/^(-.*)$/m',
  27                         '/^(@.*)$/m',
  28                         '/^([^d\+-@].*)$/m',
  29                 ),
  30                 array(
  31                         '<span class="add">$1</span>',
  32                         '<span class="del">$1</span>',
  33                         '<span class="pos">$1</span>',
  34                         '<span class="etc">$1</span>',
  35                 ),
  36                 $text);
  37         $text = preg_replace_callback('#^diff --git a/(.*) b/(.*)$#m',
  38                 create_function(
  39                         '$m',
  40                         'return "<span class=\"diffline\"><a name=\"". urlencode($m[1]) ."\">diff --git a/$m[1] b/$m[2]</a></span>";'
  41                 ),
  42                 $text);
  43
  44         return array($files, $text);
  45 }
  46
  47 function get_project_info($name)
  48 {
  49         global $conf;
  50
  51         $info = $conf['projects'][$name];
  52         $info['name'] = $name;
  53         $info['description'] = file_get_contents($info['repo'] .'/description');
  54
  55         $headinfo = git_get_commit_info($name, 'HEAD');
  56         $info['head_stamp'] = $headinfo['author_utcstamp'];
  57         $info['head_datetime'] = strftime($conf['datetime'], $headinfo['author_utcstamp']);
  58         $info['head_hash'] = $headinfo['h'];
  59         $info['head_tree'] = $headinfo['tree'];
  60
  61         return $info;
  62 }
  63
  64 /**
  65  * Get details of a commit: tree, parent, author/committer (name, mail, date), message
  66  */
  67 function git_get_commit_info($project, $hash = 'HEAD')
  68 {
  69         global $conf;
  70
  71         $info = array();
  72         $info['h'] = $hash;
  73         $info['message_full'] = '';
  74
  75         $output = run_git($project, "git rev-list --header --max-count=1 $hash");
  76         // tree <h>
  77         // parent <h>
  78         // author <name> "<"<mail>">" <stamp> <timezone>
  79         // committer
  80         // <empty>
  81         //     <message>
  82         $pattern = '/^(author|committer) ([^<]+) <([^>]*)> ([0-9]+) (.*)$/';
  83         foreach ($output as $line) {
  84                 if (substr($line, 0, 4) === 'tree') {
  85                         $info['tree'] = substr($line, 5);
  86                 }
  87                 elseif (substr($line, 0, 6) === 'parent') {
  88                         $info['parent']  = substr($line, 7);
  89                 }
  90                 elseif (preg_match($pattern, $line, $matches) > 0) {
  91                         $info[$matches[1] .'_name'] = $matches[2];
  92                         $info[$matches[1] .'_mail'] = $matches[3];
  93                         $info[$matches[1] .'_stamp'] = $matches[4];
  94                         $info[$matches[1] .'_timezone'] = $matches[5];
  95                         $info[$matches[1] .'_utcstamp'] = $matches[4] - ((intval($matches[5]) / 100.0) * 3600);
  96                 }
  97                 elseif (substr($line, 0, 4) === '    ') {
  98                         $info['message_full'] .= substr($line, 4) ."\n";
  99                         if (!isset($info['message'])) {
 100                                 $info['message'] = substr($line, 4, $conf['commit_message_maxlen']);
 101                                 $info['message_firstline'] = substr($line, 4);
 102                         }
 103                 }
 104                 elseif (preg_match('/^[0-9a-f]{40}$/', $line) > 0) {
 105                         $info['h'] = $line;
 106                 }
 107         }
 108
 109         return $info;
 110 }
 111
 112 function git_get_heads($project)
 113 {
 114         $heads = array();
 115
 116         $output = run_git($project, 'git show-ref --heads');
 117         foreach ($output as $line) {
 118                 $fullname = substr($line, 41);
 119                 $name = array_pop(explode('/', $fullname));
 120                 $heads[] = array('h' => substr($line, 0, 40), 'fullname' => "$fullname", 'name' => "$name");
 121         }
 122
 123         return $heads;
 124 }
 125
 126 function git_get_rev_list($project, $max_count = null, $start = 'HEAD')
 127 {
 128         $cmd = "git rev-list $start";
 129         if (!is_null($max_count)) {
 130                 $cmd = "git rev-list --max-count=$max_count $start";
 131         }
 132
 133         return run_git($project, $cmd);
 134 }
 135
 136 function git_get_tags($project)
 137 {
 138         $tags = array();
 139
 140         $output = run_git($project, 'git show-ref --tags');
 141         foreach ($output as $line) {
 142                 $fullname = substr($line, 41);
 143                 $name = array_pop(explode('/', $fullname));
 144                 $tags[] = array('h' => substr($line, 0, 40), 'fullname' => $fullname, 'name' => $name);
 145         }
 146         return $tags;
 147 }
 148
 149 function git_ls_tree($project, $tree)
 150 {
 151         $entries = array();
 152         $output = run_git($project, "git ls-tree $tree");
 153         // 100644 blob 493b7fc4296d64af45dac64bceac2d9a96c958c1    .gitignore
 154         // 040000 tree 715c78b1011dc58106da2a1af2fe0aa4c829542f    doc
 155         foreach ($output as $line) {
 156                 $parts = preg_split('/\s+/', $line, 4);
 157                 $entries[] = array('name' => $parts[3], 'mode' => $parts[0], 'type' => $parts[1], 'hash' => $parts[2]);
 158         }
 159
 160         return $entries;
 161 }
 162
 163 function makelink($dict)
 164 {
 165         $params = array();
 166         foreach ($dict as $k => $v) {
 167                 $params[] = rawurlencode($k) .'='. str_replace('%2F', '/', rawurlencode($v));
 168         }
 169         if (count($params) > 0) {
 170                 return '?'. htmlentities(join('&', $params));
 171         }
 172         return '';
 173 }
 174
 175 /**
 176  * Executes a git command in the project repo.
 177  * @return array of output lines
 178  */
 179 function run_git($project, $command)
 180 {
 181         global $conf;
 182
 183         $output = array();
 184         $cmd = "GIT_DIR=". $conf['projects'][$project]['repo'] ." $command";
 185         exec($cmd, &$output);
 186         return $output;
 187 }
 188
 189 /**
 190  * Executes a git command in the project repo, sending output directly to the
 191  * client.
 192  */
 193 function run_git_passthru($project, $command)
 194 {
 195         global $conf;
 196
 197         $cmd = "GIT_DIR=". $conf['projects'][$project]['repo'] ." $command";
 198         $result = 0;
 199         passthru($cmd, &$result);
 200         return $result;
 201 }
 202
 203 /**
 204  * Makes sure the given project is valid. If it's not, this function will
 205  * die().
 206  * @return the project
 207  */
 208 function validate_project($project)
 209 {
 210         global $conf;
 211
 212         if (!in_array($project, array_keys($conf['projects']))) {
 213                 die('Invalid project');
 214         }
 215         return $project;
 216 }
 217
 218 /**
 219  * Makes sure the given hash is valid. If it's not, this function will die().
 220  * @return the hash
 221  */
 222 function validate_hash($hash)
 223 {
 224         if (strlen($hash) != 40 || !preg_match('/^[0-9a-z]*$/', $hash)) {
 225                 die('Invalid hash');
 226
 227         }
 228         return $hash;
 229 }
 230
 231 $action = 'index';
 232 $template = 'index';
 233 $page['title'] = 'ViewGit';
 234
 235 if (isset($_REQUEST['a'])) {
 236         $action = strtolower($_REQUEST['a']);
 237 }
 238 $page['action'] = $action;
 239
 240 if ($action === 'index') {
 241         $template = 'index';
 242         $page['title'] = 'List of projects - ViewGit';
 243
 244         foreach (array_keys($conf['projects']) as $p) {
 245                 $page['projects'][] = get_project_info($p);
 246         }
 247 }
 248 elseif ($action === 'archive') {
 249         $project = validate_project($_REQUEST['p']);
 250         $tree = validate_hash($_REQUEST['h']);
 251         $type = $_REQUEST['t'];
 252
 253         $basename = "$project-tree-$tree";
 254         if (isset($_REQUEST['n'])) {
 255                 $basename = "$project-$_REQUEST[n]-". substr($tree, 0, 6);
 256         }
 257
 258         if ($type === 'targz') {
 259                 header("Content-Type: application/x-tar-gz");
 260                 header("Content-Transfer-Encoding: binary");
 261                 header("Content-Disposition: attachment; filename=\"$basename.tar.gz\";");
 262                 run_git_passthru($project, "git archive --format=tar $tree |gzip");
 263         }
 264         elseif ($type === 'zip') {
 265                 header("Content-Type: application/x-zip");
 266                 header("Content-Transfer-Encoding: binary");
 267                 header("Content-Disposition: attachment; filename=\"$basename.zip\";");
 268                 run_git_passthru($project, "git archive --format=zip $tree");
 269         }
 270         else {
 271                 die('Invalid archive type requested');
 272         }
 273
 274         die();
 275 }
 276 // blob: send a blob to browser with filename suggestion
 277 elseif ($action === 'blob') {
 278         $project = validate_project($_REQUEST['p']);
 279         $hash = validate_hash($_REQUEST['h']);
 280         $name = $_REQUEST['n'];
 281
 282         header('Content-type: application/octet-stream');
 283         header("Content-Disposition: attachment; filename=$name"); // FIXME needs quotation
 284
 285         run_git_passthru($project, "git cat-file blob $hash");
 286         die();
 287 }
 288 elseif ($action === 'commit') {
 289         $template = 'commit';
 290         $page['project'] = validate_project($_REQUEST['p']);
 291         $page['title'] = "$page[project] - Commit - ViewGit";
 292         $page['commit_id'] = validate_hash($_REQUEST['h']);
 293
 294         $info = git_get_commit_info($page['project'], $page['commit_id']);
 295
 296         $page['author_name'] = $info['author_name'];
 297         $page['author_mail'] = $info['author_mail'];
 298         $page['author_datetime'] = strftime($conf['datetime'], $info['author_utcstamp']);
 299         $page['author_datetime_local'] = strftime($conf['datetime'], $info['author_stamp']) .' '. $info['author_timezone'];
 300         $page['committer_name'] = $info['committer_name'];
 301         $page['committer_mail'] = $info['committer_mail'];
 302         $page['committer_datetime'] = strftime($conf['datetime'], $info['committer_utcstamp']);
 303         $page['committer_datetime_local'] = strftime($conf['datetime'], $info['committer_stamp']) .' '. $info['committer_timezone'];
 304         $page['tree_id'] = $info['tree'];
 305         $page['parent'] = $info['parent'];
 306         $page['message'] = $info['message'];
 307         $page['message_firstline'] = $info['message_firstline'];
 308         $page['message_full'] = $info['message_full'];
 309
 310 }
 311 elseif ($action === 'commitdiff') {
 312         $template = 'commitdiff';
 313         $page['project'] = validate_project($_REQUEST['p']);
 314         $page['title'] = "$page[project] - Commitdiff - ViewGit";
 315         $hash = validate_hash($_REQUEST['h']);
 316         $page['commit_id'] = $hash;
 317
 318         $info = git_get_commit_info($page['project'], $hash);
 319
 320         $page['tree_id'] = $info['tree'];
 321
 322         $page['message'] = $info['message'];
 323         $page['message_firstline'] = $info['message_firstline'];
 324         $page['message_full'] = $info['message_full'];
 325         $page['author_name'] = $info['author_name'];
 326         $page['author_mail'] = $info['author_mail'];
 327         $page['author_datetime'] = strftime($conf['datetime'], $info['author_utcstamp']);
 328
 329         $text = join("\n", run_git($page['project'], "git diff $hash^..$hash"));
 330         list($page['files'], $page['diffdata']) = format_diff($text);
 331         //$page['diffdata'] = format_diff($text);
 332 }
 333 elseif ($action === 'shortlog') {
 334         $template = 'shortlog';
 335         $page['project'] = validate_project($_REQUEST['p']);
 336         $page['title'] = "$page[project] - Shortlog - ViewGit";
 337         if (isset($_REQUEST['h'])) {
 338                 $page['ref'] = validate_hash($_REQUEST['h']);
 339         } else {
 340                 $page['ref'] = 'HEAD';
 341         }
 342
 343         $info = git_get_commit_info($page['project']);
 344         $page['commit_id'] = $info['h'];
 345         $page['tree_id'] = $info['tree'];
 346
 347         // TODO merge the logic with 'summary' below
 348         $revs = git_get_rev_list($page['project'], $conf['summary_shortlog'], $page['ref']); // TODO pass first rev as parameter
 349         foreach ($revs as $rev) {
 350                 $info = git_get_commit_info($page['project'], $rev);
 351                 $page['shortlog'][] = array(
 352                         'author' => $info['author_name'],
 353                         'date' => strftime($conf['datetime'], $info['author_utcstamp']),
 354                         'message' => $info['message'],
 355                         'commit_id' => $rev,
 356                         'tree' => $info['tree'],
 357                 );
 358         }
 359 }
 360 elseif ($action === 'summary') {
 361         $template = 'summary';
 362         $page['project'] = validate_project($_REQUEST['p']);
 363         $page['title'] = "$page[project] - Summary - ViewGit";
 364
 365         $info = git_get_commit_info($page['project']);
 366         $page['commit_id'] = $info['h'];
 367         $page['tree_id'] = $info['tree'];
 368
 369         $revs = git_get_rev_list($page['project'], $conf['summary_shortlog']);
 370         foreach ($revs as $rev) {
 371                 $info = git_get_commit_info($page['project'], $rev);
 372                 $page['shortlog'][] = array(
 373                         'author' => $info['author_name'],
 374                         'date' => strftime($conf['datetime'], $info['author_utcstamp']),
 375                         'message' => $info['message'],
 376                         'commit_id' => $rev,
 377                         'tree' => $info['tree'],
 378                 );
 379         }
 380
 381         $tags = git_get_tags($page['project']);
 382         $page['tags'] = array();
 383         foreach ($tags as $tag) {
 384                 $info = git_get_commit_info($page['project'], $tag['h']);
 385                 $page['tags'][] = array(
 386                         'date' => strftime($conf['datetime'], $info['author_utcstamp']),
 387                         'h' => $tag['h'],
 388                         'fullname' => $tag['fullname'],
 389                         'name' => $tag['name'],
 390                 );
 391         }
 392
 393         $heads = git_get_heads($page['project']);
 394         $page['heads'] = array();
 395         foreach ($heads as $h) {
 396                 $info = git_get_commit_info($page['project'], $h['h']);
 397                 $page['heads'][] = array(
 398                         'date' => strftime($conf['datetime'], $info['author_utcstamp']),
 399                         'h' => $h['h'],
 400                         'fullname' => $h['fullname'],
 401                         'name' => $h['name'],
 402                 );
 403         }
 404 }
 405 /*
 406  * Shows a tree, with list of directories/files, links to them and download
 407  * links to archives.
 408  *
 409  * @param p project
 410  * @param h tree hash
 411  * @param hb OPTIONAL base commit (trees can be part of multiple commits, this
 412  * one denotes which commit the user navigated from)
 413  */
 414 elseif ($action === 'tree') {
 415         $template = 'tree';
 416         $page['project'] = validate_project($_REQUEST['p']);
 417         $page['tree_id'] = validate_hash($_REQUEST['h']);
 418         $page['title'] = "$page[project] - Tree - ViewGit";
 419
 420         // 'hb' optionally contains the commit_id this tree is related to
 421         if (isset($_REQUEST['hb'])) {
 422                 $page['commit_id'] = validate_hash($_REQUEST['hb']);
 423         }
 424         else {
 425                 // for the header
 426                 $info = git_get_commit_info($page['project']);
 427                 $page['commit_id'] = $info['h'];
 428         }
 429
 430         $page['path'] = '';
 431         if (isset($_REQUEST['f'])) {
 432                 $page['path'] = $_REQUEST['f']; // TODO validate?
 433         }
 434
 435         $page['entries'] = git_ls_tree($page['project'], $page['tree_id']);
 436 }
 437 /*
 438  * View a blob as inline, embedded on the page.
 439  * @param p project
 440  * @param h blob hash
 441  * @param hb OPTIONAL base commit
 442  */
 443 elseif ($action === 'viewblob') {
 444         $template = 'blob';
 445         $page['project'] = validate_project($_REQUEST['p']);
 446         $page['hash'] = validate_hash($_REQUEST['h']);
 447         $page['title'] = "$page[project] - Blob - ViewGit";
 448         if (isset($_REQUEST['hb'])) {
 449                 $page['commit_id'] = validate_hash($_REQUEST['hb']);
 450         }
 451         else {
 452                 $page['commit_id'] = 'HEAD';
 453         }
 454
 455         $page['path'] = '';
 456         if (isset($_REQUEST['f'])) {
 457                 $page['path'] = $_REQUEST['f']; // TODO validate?
 458         }
 459
 460         // For the header's pagenav
 461         $info = git_get_commit_info($page['project'], $page['commit_id']);
 462         $page['commit_id'] = $info['h'];
 463         $page['tree_id'] = $info['tree'];
 464
 465         $page['data'] = join("\n", run_git($page['project'], "git cat-file blob $page[hash]"));
 466 }
 467 else {
 468         die('Invalid action');
 469 }
 470
 471 require 'templates/header.php';
 472 require "templates/$template.php";
 473 require 'templates/footer.php';