From 143c8289c2a75a9ff8d1db6136baa56fbb8ac19f Mon Sep 17 00:00:00 2001
From: paulr <me@pjr.cc>
Date: Sun, 7 Aug 2011 03:16:11 +1000
Subject: [PATCH] updating apt repo's now work.... apt really annoys

---
 bin/updateaptrepo.php |   86 ++++++++++++++++++++++++++++++++++++++++++++++++-
 plugins/repo.php      |   25 +++++++++++++-
 2 files changed, 109 insertions(+), 2 deletions(-)

diff --git a/bin/updateaptrepo.php b/bin/updateaptrepo.php
index 38aae68..dadd382 100644
--- a/bin/updateaptrepo.php
+++ b/bin/updateaptrepo.php
@@ -27,10 +27,94 @@ if(file_exists("$file/update.lock")) {
 	} else {
 		error_log("weird problem");
 	}
+	fclose($lf);
 }
-fclose($lf);
 $lf = fopen("$file/update.lock", "w");
 flock($lf, LOCK_EX|LOCK_NB);
 
+// next we go into $file/dists and open each dir
+// download "release"
+// then check every file in release against what we have... this is giong to be a nightmare
+$dh = opendir("$file/dists/");
+while(($fn = readdir($dh))!==false) {
+	if($fn != "." && $fn != "..") {
+		echo "checkin dist, $fn with $url\n";
+		$releasefile = file_get_contents("$url/dists/$fn/Release");
+		file_put_contents("$file/dists/$fn/Release.new", $releasefile);
+		if(file_exists("$file/dists/$fn/Release")) {
+			unlink("$file/dists/$fn/Release");
+			rename("$file/dists/$fn/Release.new", "$file/dists/$fn/Release");
+		} else {
+			rename("$file/dists/$fn/Release.new", "$file/dists/$fn/Release");
+		}
+		
+		echo "got release file\n";
+		
+		// now open that release file and check all our ... versions and stuff, this bit sucks, i hate parsing text files
+		$relfile = fopen("$file/dists/$fn/Release", "r");
+		$continue = true;
+		$chkfile = false;
+		if($relfile) while($continue) {
+			$line = fgets($relfile);
+			if(feof($relfile)) $continue = false;
+			// first try to parse a tag
+			$tags = explode(":", $line);
+			// check for a tag we're into
+			if(strcasecmp($tags[0], "md5sum") == 0) {
+				$chkfile = true;
+				$chktype = "md5";
+							
+			} else if(strcasecmp($tags[0], "SHA1") == 0) {
+				$chkfile = true;
+				$chktype = "sha1";
+				
+			} else if(strcasecmp($tags[0], "SHA256") == 0) {
+				$chkfile = true;
+				$chktype = "sha256";
+				
+				
+			} else if($chkfile) {
+				//echo "in chkfile on $line\n";
+				$line = trim($line);
+				$lspl = preg_split("/ +/", $line);
+				if(isset($lspl[2])) {
+					$sum = $lspl[0];
+					$size = ((int)($lspl[1]));
+					$distrofile = $lspl[2];
+					if(file_exists("$file/dists/$fn/$distrofile")) {
+						$updatefile = false;
+						$mysum = hash_file($chktype, "$file/dists/$fn/$distrofile");
+						$mysize = filesize("$file/dists/$fn/$distrofile");
+						//echo "would check $sum, $size, $distrofile against $distrofile/dists/$fn, $sum\n";
+						if(strtolower($mysum) == strtolower($sum)) {
+							echo "file $distrofile is clean for sum\n";
+						} else {
+							echo "File $distrofile needs updating with $sum, $mysum, $chktype, $url\n";
+							$updatefile = true;
+						}
+						
+						if($size != $mysize) {
+							echo "File $distrofile needs updating with $size, $mysize, $url\n";
+							$updatefile = true;
+						} else {
+							echo "file $distrofile is clean for size\n";
+						}
+						if($updatefile) {
+							$getthisfile = file_get_contents("$url/dists/$fn/$distrofile");
+							unlink("$file/dists/$fn/$distrofile");
+							file_put_contents("$file/dists/$fn/$distrofile", $getthisfile);
+							echo "Updated file\n";
+						}
+					}
+				} else {
+					$chkfile = false;
+				}
+			}
+		}
+	}
+}
+fclose($lf);
+unlink("$file/update.lock");
+echo "im at an end\n";
 
 ?>
\ No newline at end of file
diff --git a/plugins/repo.php b/plugins/repo.php
index 9d1de84..f794c29 100644
--- a/plugins/repo.php
+++ b/plugins/repo.php
@@ -63,7 +63,23 @@ class GLCASRepo {
 				}
 				echo " - Expire time is ".$repo["expiretime"]." days, checking repo<br>";
 				$maxtdiff = $repo["expiretime"] * 24 * 3600;
-				$this->updateRepo($rkey);
+				// now we check for outdated release files
+				$dh = opendir("$repostore/$rkey/dists/");
+				$needsupdate = false;
+				while(($fn = readdir($dh))!==false) {
+					if($fn != "." && $fn != "..") {
+						if(file_exists("$repostore/$rkey/dists/$fn/Release")) {
+							$tdiff = time() -  filemtime("$repostore/$rkey/dists/$fn/Release");
+							if($tdiff > $maxtdiff) $needsupdate = true;
+						}
+					}
+				}
+				if($needsupdate) {
+					echo " - Spawn updater<br>";
+					$this->updateRepo($rkey);
+				} else {
+					echo " - Up to date<br>";
+				}
 			}
 		}
 	}
@@ -795,6 +811,13 @@ class GLCASRepo {
 		if(!file_exists("$repostore/$repokey")) {
 			mkdir("$repostore/$repokey");
 		}
+		
+		if(!file_exists("$repostore/$repokey/dists/")) {
+			mkdir("$repostore/$repokey/dists/");
+			// no point trying to update if we have no dists directory
+			return;
+		}
+		
 
 		error_log("background apt repo update, start");
 		global $WEB_ROOT_FS, $URL_HANDLERS, $BASE_URL;
-- 
1.7.0.4