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LookupServer: Load hostnames
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parent
4f62176c3e
commit
70a37f9a26
Notes:
sideshowbarker
2024-07-19 13:42:31 +09:00
Author: https://github.com/alexispurslane Commit: https://github.com/SerenityOS/serenity/commit/70a37f9a266 Pull-request: https://github.com/SerenityOS/serenity/pull/210 Reviewed-by: https://github.com/awesomekling
1
.gitignore
vendored
1
.gitignore
vendored
@ -13,3 +13,4 @@ Toolchain/Build
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Toolchain/Local
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.vscode
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compile_commands.json
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.clang_complete
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@ -1,3 +1,2 @@
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[DNS]
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IPAddress=8.8.8.8
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1
Base/etc/hosts
Normal file
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Base/etc/hosts
Normal file
@ -0,0 +1 @@
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127.0.0.1 localhost
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@ -39,7 +39,27 @@ int main(int argc, char** argv)
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config->file_name().characters());
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auto DNS_IP = config->read_entry("DNS", "IPAddress", "127.0.0.53");
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HashMap<String, IPv4Address> dns_cache;
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dbgprintf("LookupServer: Loading hosts from /etc/hosts:\n");
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HashMap<String, IPv4Address> dns_custom_hostnames;
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auto* file = fopen("/etc/hosts", "r");
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auto linebuf = ByteBuffer::create_uninitialized(256);
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while (fgets((char*)linebuf.pointer(), linebuf.size(), file)) {
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auto str_line = String::copy(linebuf);
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auto fields = str_line.split('\t');
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auto sections = fields[0].split('.');
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IPv4Address addr {
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(byte)atoi(sections[0].characters()),
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(byte)atoi(sections[1].characters()),
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(byte)atoi(sections[2].characters()),
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(byte)atoi(sections[3].characters()),
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};
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int len = 0;
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while ((fields[1][len++]) != -123)
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;
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auto name = fields[1].substring(0, len - 3);
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dbgprintf("LookupServer: Hosts: %s\t%s\n", name.characters(), addr.to_string().characters());
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dns_custom_hostnames.set(name, addr);
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}
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int server_fd = socket(AF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0);
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if (server_fd < 0) {
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@ -111,7 +131,10 @@ int main(int argc, char** argv)
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Vector<String> responses;
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if (!hostname.is_empty()) {
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if (dns_custom_hostnames.contains(hostname)) {
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addresses.append(dns_custom_hostnames.get(hostname));
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dbgprintf("LookupServer: Found preconfigured host (from /etc/hosts): %s\n", addresses[0].to_string().characters());
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} else if (!hostname.is_empty()) {
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bool did_timeout;
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int retries = 3;
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do {
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