commit 49f58cff06c690ec8b1ae0a48687aeac4d3a4505 Author: Minecon724 Date: Sat Oct 25 20:48:52 2025 +0200 Initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b1dff0d --- /dev/null +++ b/.gitignore @@ -0,0 +1,45 @@ +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### IntelliJ IDEA ### +.idea/modules.xml +.idea/jarRepositories.xml +.idea/compiler.xml +.idea/libraries/ +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### Kotlin ### +.kotlin + +### Eclipse ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ + +### Mac OS ### +.DS_Store \ No newline at end of file diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..26d3352 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,3 @@ +# Default ignored files +/shelf/ +/workspace.xml diff --git a/.idea/gradle.xml b/.idea/gradle.xml new file mode 100644 index 0000000..2a65317 --- /dev/null +++ b/.idea/gradle.xml @@ -0,0 +1,17 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..5cd9a10 --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,7 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/vcs.xml b/.idea/vcs.xml new file mode 100644 index 0000000..94a25f7 --- /dev/null +++ b/.idea/vcs.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/build.gradle.kts b/build.gradle.kts new file mode 100644 index 0000000..509efa0 --- /dev/null +++ b/build.gradle.kts @@ -0,0 +1,47 @@ +plugins { + kotlin("multiplatform") version "2.2.21" +} + +group = "dn42.m724" +version = "1.0-SNAPSHOT" + +repositories { + mavenCentral() +} + +kotlin { + val hostOs = System.getProperty("os.name") + val isArm64 = System.getProperty("os.arch") == "aarch64" + val isMingwX64 = hostOs.startsWith("Windows") + val nativeTarget = when { + hostOs == "Mac OS X" && isArm64 -> macosArm64("native") + hostOs == "Mac OS X" && !isArm64 -> macosX64("native") + hostOs == "Linux" && isArm64 -> linuxArm64("native") + hostOs == "Linux" && !isArm64 -> linuxX64("native") + isMingwX64 -> mingwX64("native") + else -> throw GradleException("Host OS is not supported in Kotlin/Native.") + } + + nativeTarget.apply { + compilations.getByName("main") { + cinterops { + val bgpdump by creating + } + } + binaries { + executable { + entryPoint = "dn42.m724.pathtools.main" + } + } + } + + sourceSets { + nativeMain.dependencies { + //implementation("io.ktor:ktor-server-core:3.3.1") + //implementation("io.ktor:ktor-server-cio:3.3.1") + } + nativeTest.dependencies { + implementation(kotlin("test")) + } + } +} \ No newline at end of file diff --git a/gradle.properties b/gradle.properties new file mode 100644 index 0000000..7fc6f1f --- /dev/null +++ b/gradle.properties @@ -0,0 +1 @@ +kotlin.code.style=official diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..249e583 Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..27b5eb7 --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +#Thu Oct 23 15:15:03 CEST 2025 +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/gradlew b/gradlew new file mode 100755 index 0000000..1b6c787 --- /dev/null +++ b/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/settings.gradle.kts b/settings.gradle.kts new file mode 100644 index 0000000..abeaf1a --- /dev/null +++ b/settings.gradle.kts @@ -0,0 +1,4 @@ +plugins { + id("org.gradle.toolchains.foojay-resolver-convention") version "0.8.0" +} +rootProject.name = "faucet6" \ No newline at end of file diff --git a/src/nativeInterop/cinterop/bgpdump.def b/src/nativeInterop/cinterop/bgpdump.def new file mode 100644 index 0000000..b22b293 --- /dev/null +++ b/src/nativeInterop/cinterop/bgpdump.def @@ -0,0 +1,4 @@ +headers = bgpdump_lib.h + +compilerOpts = -I/usr/local/include +linkerOpts = -L/usr/local/lib64 -lbgpdump \ No newline at end of file diff --git a/src/nativeMain/kotlin/dn42/m724/pathtools/AsnStats.kt b/src/nativeMain/kotlin/dn42/m724/pathtools/AsnStats.kt new file mode 100644 index 0000000..b1b6e32 --- /dev/null +++ b/src/nativeMain/kotlin/dn42/m724/pathtools/AsnStats.kt @@ -0,0 +1,6 @@ +package dn42.m724.pathtools + +data class AsnStats( + val peers: Int, + val weight: Double +) \ No newline at end of file diff --git a/src/nativeMain/kotlin/dn42/m724/pathtools/ExportFile.kt b/src/nativeMain/kotlin/dn42/m724/pathtools/ExportFile.kt new file mode 100644 index 0000000..0d9096e --- /dev/null +++ b/src/nativeMain/kotlin/dn42/m724/pathtools/ExportFile.kt @@ -0,0 +1,56 @@ +package dn42.m724.pathtools + +import kotlinx.cinterop.ExperimentalForeignApi +import kotlinx.cinterop.LongVar +import kotlinx.cinterop.addressOf +import kotlinx.cinterop.alloc +import kotlinx.cinterop.memScoped +import kotlinx.cinterop.ptr +import kotlinx.cinterop.toKString +import kotlinx.cinterop.usePinned +import kotlinx.cinterop.value +import platform.posix.errno +import platform.posix.fclose +import platform.posix.fopen +import platform.posix.fwrite +import platform.posix.strerror + +@OptIn(ExperimentalForeignApi::class) +fun exportAsnStats( + path: String, + timestamp: Long, + stats: Map +) { + val fd = fopen(path, "wb") + ?: throw RuntimeException("Failed to open export file for writing: " + strerror(errno)?.toKString()) + + try { + memScoped { + val longVar = alloc() + longVar.value = timestamp + + if (fwrite(longVar.ptr, 8u, 1u, fd) != 1.toULong()) { + throw RuntimeException("Failed to write to export file: " + strerror(errno)?.toKString()) + } + } + + val buffer = IntArray(3) + + stats.forEach { (asn, stats) -> + buffer[0] = asn.toInt() + buffer[1] = stats.peers + buffer[2] = stats.weight.toFloat().toBits() + + buffer.usePinned { + val pointer = it.addressOf(0) + if (fwrite(pointer, 4u, 3u, fd) != 3.toULong()) { + throw RuntimeException("Failed to write to export file: " + strerror(errno)?.toKString()) + } + } + } + } finally { + fclose(fd) + } + + +} \ No newline at end of file diff --git a/src/nativeMain/kotlin/dn42/m724/pathtools/Main.kt b/src/nativeMain/kotlin/dn42/m724/pathtools/Main.kt new file mode 100644 index 0000000..8290731 --- /dev/null +++ b/src/nativeMain/kotlin/dn42/m724/pathtools/Main.kt @@ -0,0 +1,63 @@ +package dn42.m724.pathtools + +import kotlinx.cinterop.ExperimentalForeignApi + +private lateinit var statsMap: Map + +@OptIn(ExperimentalForeignApi::class) +fun main() { + val (timestamp, peerMap) = readPeerMapFromDump("/home/user/Downloads/master6_latest.mrt") + + val statsMap = peerMap.toStatsMap() + + //val smallest90 = peerMap.values.sortedBy { it.size }.take(peerMap.size / 10) + //val average = peerMap.values.sumOf { it.size } / peerMap.values.size + + /*stats.entries + .sortedByDescending { it.value } + .forEach { (asn, share) -> + println("$asn: weight: ${share}%, corrected: ${2 * share * (1-share)}") + }*/ + + exportAsnStats("./export.bin", timestamp, statsMap) + + /*embeddedServer(CIO, configure = { + this.reuseAddress = true + }) { + routing { + get("/") { + call.response.header("content-type", "application/json") + + val response = """{"timestamp": $timestamp, "networks": {${statsMap.map { (asn, stats) -> "\"$asn\": " + stats.toJsonString() }.joinToString(", ")}}}""" + + call.respondText(response) + } + get("/as/{asn}") { + val asn = call.parameters["asn"]?.toUInt() + ?: throw BadRequestException("ASN not provided") + + val stats = statsMap[asn] + ?: throw NotFoundException("ASN not found") + + val response = stats.toJsonString() + call.respondText(response, ContentType.Application.Json) + } + } + }.start(wait = true)*/ +} + +private fun AsnStats.toJsonString(): String = + """{"peers": $peers, "weight": $weight}""" + +private fun Map>.toStatsMap(): Map { + val totalPeerings = this.values.sumOf { it.size } + + return this.mapValues { (_, peers) -> + AsnStats( + peers = peers.size, + weight = peers.size.toDouble() / totalPeerings + ) + + //2 * weight * (1 - weight) + } +} \ No newline at end of file diff --git a/src/nativeMain/kotlin/dn42/m724/pathtools/RoutingTable.kt b/src/nativeMain/kotlin/dn42/m724/pathtools/RoutingTable.kt new file mode 100644 index 0000000..790950b --- /dev/null +++ b/src/nativeMain/kotlin/dn42/m724/pathtools/RoutingTable.kt @@ -0,0 +1,153 @@ +package dn42.m724.pathtools + +import bgpdump.ASN16_LEN +import bgpdump.ASN32_LEN +import bgpdump.AS_HEADER_SIZE +import bgpdump.BGPDUMP_ENTRY +import bgpdump.BGPDUMP_SUBTYPE_TABLE_DUMP_V2_RIB_IPV6_UNICAST +import bgpdump.BGPDUMP_SUBTYPE_TABLE_DUMP_V2_RIB_IPV6_UNICAST_ADDPATH +import bgpdump.BGPDUMP_TYPE_TABLE_DUMP_V2 +import bgpdump.aspath +import bgpdump.assegment +import bgpdump.bgpdump_close_dump +import bgpdump.bgpdump_free_mem +import bgpdump.bgpdump_open_dump +import bgpdump.bgpdump_read_next +import kotlinx.cinterop.CPointer +import kotlinx.cinterop.ExperimentalForeignApi +import kotlinx.cinterop.IntVar +import kotlinx.cinterop.ShortVar +import kotlinx.cinterop.get +import kotlinx.cinterop.memScoped +import kotlinx.cinterop.plus +import kotlinx.cinterop.pointed +import kotlinx.cinterop.reinterpret +import kotlinx.cinterop.toKString +import kotlinx.cinterop.value +import platform.posix.errno +import platform.posix.ntohl +import platform.posix.ntohs +import platform.posix.strerror + +@OptIn(ExperimentalForeignApi::class) +fun readPeerMapFromDump( + filename: String +): Pair>> { + var timestamp: Long = 0 + val peerMap = mutableMapOf>() + + memScoped { + val dump = bgpdump_open_dump(filename) + ?: throw RuntimeException("Unable to open dump file: " + strerror(errno)?.toKString()) + + try { + println("Reading entries...") + var entryCount = 0 + + while (dump.pointed.eof == 0) { + bgpdump_read_next(dump)?.let { entry -> + entryCount++ + //println("Read entry #${++entryCount}: Time=${entry.pointed.time}, Type=${entry.pointed.type}, Subtype=${entry.pointed.subtype}") + + if (entry.pointed.type.toInt() == BGPDUMP_TYPE_TABLE_DUMP_V2) { + when (entry.pointed.subtype.toInt()) { + BGPDUMP_SUBTYPE_TABLE_DUMP_V2_RIB_IPV6_UNICAST, BGPDUMP_SUBTYPE_TABLE_DUMP_V2_RIB_IPV6_UNICAST_ADDPATH -> { + readAsPaths(entry) { path -> + calculateAdjacency(path) { asn1, asn2 -> + peerMap + .getOrPut(asn1) { mutableSetOf() } + .add(asn2) + } + } + } + } + } else { + println("Ignoring entry #${entryCount}: Time=${entry.pointed.time}, Type=${entry.pointed.type}, Subtype=${entry.pointed.subtype}") + } + + timestamp = entry.pointed.time + + bgpdump_free_mem(entry) + } + } + + println("Finished reading. Total entries: $entryCount") + } finally { + bgpdump_close_dump(dump) + } + } + + return Pair(timestamp, peerMap) //.mapValues { (_, peers) -> peers.toSet() }.toMap() +} + +@OptIn(ExperimentalForeignApi::class) +private fun readAsPaths( + entry: CPointer, + block: (List) -> Unit +) { + val prefix = entry.pointed.body.mrtd_table_dump_v2_prefix + + //val addressBytes = prefix.prefix.v6_addr.__in6_u.__u6_addr8 + + for (i in 0.. + val path = pointerToAsPath(pointer) + block(path) + } + } +} + +private fun calculateAdjacency( + path: List, + add: (UInt, UInt) -> Unit +) { + for (i in 1..): List { + val aspath = pointer.pointed + + var pos = 0 + + val asnLength = aspath.asn_len.toInt() + + val path = mutableListOf() + + while (pos < pointer.pointed.length) { + val segment: assegment = pointer.pointed.data.plus(pos)!!.reinterpret().pointed + val segmentLength = segment.length.toInt() + + val end = pos + (segmentLength * asnLength) + AS_HEADER_SIZE + if (end > aspath.length) { + throw IndexOutOfBoundsException("Reading segment at position $pos would exceed the aspath length ($end > ${aspath.length})") + } + + for (i in 0..().pointed.value.toUShort()).toUInt() + } else if (asnLength.toULong() == ASN32_LEN) { + ntohl(asnPointer.reinterpret().pointed.value.toUInt()) + } else { + throw RuntimeException("Invalid ASN length") + } + + path.add(asn) + } + + pos += (segmentLength * asnLength) + AS_HEADER_SIZE + } + + return path.toList() +} \ No newline at end of file