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