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java.lang.Objectnet.i2p.router.Blocklist
public class Blocklist
Manage blocking by IP address, in a manner similar to the Banlist, which blocks by router hash. We also try to keep the two lists in sync: if a router at a given IP is blocked, we will also banlist it "forever" (until the next reboot). While the reverse case (blocking the IP of a router banlisted forever) is not automatic, the transports will call add() below to block the IP, which allows the transports to terminate an inbound connection before the router ident handshake. And the on-disk blocklist can also contain router hashes to be banlisted. So, this class maintains three separate lists:
1) The list of IP ranges, read in from a file at startup 2) The list of hashes, read in from the same file 3) A list of single IPs, initially empty, added to as neededRead in the IP blocklist from a file, store it in-memory as efficiently as we can, and perform tests against it as requested. When queried for a peer that is blocklisted but isn't banlisted, banlist it forever, then go back to the file to get the original entry so we can add the reason to the banlist text. On-disk blocklist supports IPv4 only. In-memory supports both IPv4 and IPv6.
Constructor Summary | |
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Blocklist(RouterContext context)
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Method Summary | |
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void |
add(byte[] ip)
Maintain a simple in-memory single-IP blocklist This is used for new additions, NOT for the main list of IP ranges read in from the file. |
void |
add(String ip)
Maintain a simple in-memory single-IP blocklist This is used for new additions, NOT for the main list of IP ranges read in from the file. |
void |
disable()
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boolean |
isBlocklisted(byte[] ip)
calling this externally won't banlist the peer, this is just an IP check |
boolean |
isBlocklisted(Hash peer)
Does the peer's IP address appear in the blocklist? If so, and it isn't banlisted, banlist it forever... |
boolean |
isBlocklisted(String ip)
calling this externally won't banlist the peer, this is just an IP check |
void |
renderStatusHTML(Writer out)
Write directly to the stream so we don't OOM on a huge list. |
void |
startup()
Loads the following files in-order: $I2P/blocklist.txt ~/.i2p/blocklist.txt File if specified with router.blocklist.file |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Blocklist(RouterContext context)
Method Detail |
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public void startup()
public void disable()
public void add(String ip)
ip
- IPv4 or IPv6public void add(byte[] ip)
ip
- IPv4 or IPv6public boolean isBlocklisted(Hash peer)
public boolean isBlocklisted(String ip)
ip
- IPv4 or IPv6public boolean isBlocklisted(byte[] ip)
ip
- IPv4 or IPv6public void renderStatusHTML(Writer out) throws IOException
IOException
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