net-p2p/ctorrent: workaround broken rTorrent files

1 files changed, 38 insertions, 0 deletions

diff --git a/net-p2p/ctorrent/files/ctorrent-3.3.2-empty-path-components.patch b/net-p2p/ctorrent/files/ctorrent-3.3.2-empty-path-components.patch
new file mode 100644
index 000000000000..fce41d4feff5
--- /dev/null
+++ b/net-p2p/ctorrent/files/ctorrent-3.3.2-empty-path-components.patch
@@ -0,0 +1,38 @@
+rTorrent sometimes creates invalid torrents which has empty path components.
+the bitorrent spec allows for "" strings, but they make no sense in paths.
+so instead of always adding a / in between, skip them.  ugh.
+
+for example:
+dict {
+	'info' => dict {
+		'name' => str = "some dir" (len = 8)
+		'files' => list [
+			dict {
+				'length' => int = 12345567
+				'path' => list [
+					str = "" (len = 0)
+					str = "foo.bin" (len = 7)
+				]
+			}
+			...
+		]
+		...
+	}
+	...
+}
+
+ctorrent will then try to fetch the file "/some dir/foo.bin" instead of
+"some dir/foo.bin" (relative to $PWD).
+
+--- a/bencode.cpp
++++ b/bencode.cpp
+@@ -258,7 +258,8 @@
+     n -= r; 
+     if( 'e' == *pb ) break;
+     if( pathname >= endmax ) return 0;
+-    *pathname++ = PATH_SP;
++    if (q)
++      *pathname++ = PATH_SP;
+   }
+   *pathname = '\0';
+   return (pb - b + 1);