From 6df1437cfc924d2695ec2d77f009996308681444 Mon Sep 17 00:00:00 2001
From: Dane Springmeyer <dane@mapbox.com>
Date: Fri, 11 Nov 2016 13:59:01 -0800
Subject: [PATCH] drop md5sum dependency, depend on node.js script

---
 scripts/md5sum.js  | 94 ++++++++++++++++++++++++++++++++++++++++++++++
 test/data/Makefile |  5 ++-
 2 files changed, 97 insertions(+), 2 deletions(-)
 create mode 100755 scripts/md5sum.js

diff --git a/scripts/md5sum.js b/scripts/md5sum.js
new file mode 100755
index 000000000..0f4b729e7
--- /dev/null
+++ b/scripts/md5sum.js
@@ -0,0 +1,94 @@
+#!/usr/bin/env node
+
+'use strict'
+
+var crypto = require('crypto');
+var fs = require('fs');
+
+var idx = process.argv.indexOf('-c');
+if (idx > -1) {
+  var validate_file = process.argv[idx+1];
+  if (!process.argv[idx+1]) {
+      console.error('Please pass arg to -c with a path to the data.md5sum file used to validate');
+      process.exit(1);
+  }
+  validate(validate_file);
+} else {
+  // we are generating checksums for all filenames passed
+  var args = process.argv.slice(2);
+  if (args.length > 0) {
+      generate(args);
+  } else {
+      console.error('Please pass either a list of files to generate an md5sum for or validate with "-c data.md5sum"');
+      process.exit(1);
+  }
+}
+
+
+function md5FileSync (filename) {
+  var BUFFER_SIZE = 8192;
+  var fd = fs.openSync(filename, 'r');
+  var hash = crypto.createHash('md5');
+  var buffer = new Buffer(BUFFER_SIZE);
+
+  try {
+    var bytesRead;
+
+    do {
+      bytesRead = fs.readSync(fd, buffer, 0, BUFFER_SIZE);
+      hash.update(buffer.slice(0, bytesRead));
+    } while (bytesRead === BUFFER_SIZE)
+  } finally {
+    fs.closeSync(fd);
+  }
+
+  return hash.digest('hex');
+}
+
+function generate(files) {
+  files.forEach(function(filename) {
+    var md5_actual = md5FileSync(filename);
+    console.log(md5_actual,'',filename);
+  })
+}
+
+function validate(validate_file) {
+
+  var sums = {};
+  var lines = fs.readFileSync(validate_file).
+    toString().
+    split('\n').
+    filter(function(line) {
+      return line !== "";
+  });
+
+  var error = 0;
+
+  lines.forEach(function(line) {
+      var parts = line.split('  ');
+      var filename = parts[1];
+      var md5 = parts[0];
+      sums[filename] = md5;
+      var md5_actual = md5FileSync(filename);
+      if (md5_actual !== md5) {
+          error++;
+          console.error(filename + ': FAILED')
+      } else {
+          console.log(filename + ': OK');
+      }
+  })
+
+  if (error > 0) {
+      console.error('ms5sum.js WARNING: 1 computed checksum did NOT match');
+      console.error('\nExpected:')
+      lines.forEach(function(line) {
+          var parts = line.split('  ');
+          var filename = parts[1];
+          var md5 = parts[0];
+          console.log(md5 + '  ' + filename);
+      })
+      process.exit(1);
+  } else {
+      process.exit(0);
+  }
+}
diff --git a/test/data/Makefile b/test/data/Makefile
index c63680322..d593521e8 100755
--- a/test/data/Makefile
+++ b/test/data/Makefile
@@ -8,6 +8,7 @@ OSRM_EXTRACT:=$(OSRM_BUILD_DIR)/osrm-extract
 OSRM_CONTRACT:=$(OSRM_BUILD_DIR)/osrm-contract
 OSRM_ROUTED:=$(OSRM_BUILD_DIR)/osrm-routed
 POLY2REQ:=$(SCRIPT_ROOT)/poly2req.js
+MD5SUM:=$(SCRIPT_ROOT)/md5sum.js
 TIMER:=$(SCRIPT_ROOT)/timer.sh
 PROFILE:=$(PROFILE_ROOT)/car.lua
 
@@ -24,7 +25,7 @@ $(DATA_NAME).poly:
 
 $(DATA_NAME).osrm: $(DATA_NAME).osm.pbf $(DATA_NAME).poly $(PROFILE) $(OSRM_EXTRACT)
 	@echo "Verifiyng data file integrity..."
-	md5sum -c data.md5sum
+	$(MD5SUM) -c data.md5sum
 	@echo "Running osrm-extract..."
 	$(TIMER) "osrm-extract" $(OSRM_EXTRACT) $(DATA_NAME).osm.pbf -p $(PROFILE)
 
@@ -49,6 +50,6 @@ benchmark: $(DATA_NAME).requests osrm-routed.pid
 	@echo "****************"
 
 checksum:
-	md5sum $(DATA_NAME).osm.pbf $(DATA_NAME).poly > data.md5sum
+	$(MD5SUM) $(DATA_NAME).osm.pbf $(DATA_NAME).poly > data.md5sum
 
 .PHONY: clean checksum benchmark