[ios] Automate upload of build output to Fabric

This adds a script that automates the process of uploading the
required build output to Fabric. It requires the `FABRIC_KIT_API_KEY`
env variable and another new script called `validate-fabric-zip.sh`.

platform/ios/scripts/release-fabric.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+set -u
+
+export PUBLISH_VERSION=$1
+export BINARY_DIRECTORY=$2
+export ZIP_OUTPUT=mapbox-ios-sdk-${PUBLISH_VERSION}-fabric
+export FILE_NAME=mapbox-ios-sdk-${PUBLISH_VERSION}-fabric.zip
+export ZIP_ARCHIVE_PATH=${BINARY_DIRECTORY}/${FILE_NAME}
+export BUNDLE_ID="com.mapbox.sdk.ios"
+
+echo "Downloading ${FILE_NAME}:"
+wget -P ${BINARY_DIRECTORY} http://mapbox.s3.amazonaws.com/mapbox-gl-native/ios/builds/${FILE_NAME}
+
+echo "Extracting ${ZIP_ARCHIVE_PATH} to ${BINARY_DIRECTORY}/${ZIP_OUTPUT}"
+unzip -q ${ZIP_ARCHIVE_PATH} -d ${BINARY_DIRECTORY}/${ZIP_OUTPUT}  
+ditto ${BINARY_DIRECTORY}/${ZIP_OUTPUT}/static/Mapbox.framework ${BINARY_DIRECTORY}/Mapbox.framework
+
+echo "Zipping framework:"
+cd ${BINARY_DIRECTORY}
+zip -q -r Mapbox.framework.zip Mapbox.framework
+cd $OLDPWD
+
+echo "Validating framework:"
+./validate-fabric-zip.sh ${BINARY_DIRECTORY}/Mapbox.framework.zip
+
+echo "Uploading ${BINARY_DIRECTORY}/Mapbox.framework.zip to https://kits.fabric.io/manage-api/v1/kit-releases/ios/$BUNDLE_ID/$PUBLISH_VERSION with key ${FABRIC_KIT_API_KEY}"
+curl --fail -v -X PUT -H "X-FabricKits-ApiKey: ${FABRIC_KIT_API_KEY}" \
+    -F "release_artifact=@${BINARY_DIRECTORY}/Mapbox.framework.zip;type=application/octet-stream" \
+    https://kits.fabric.io/manage-api/v1/kit-releases/ios/$BUNDLE_ID/$PUBLISH_VERSION
+
+echo "Cleaning up"
+rm -r #{BINARY_DIRECTORY}
+
+echo "Done"

platform/ios/scripts/validate-fabric-zip.sh

@@ -0,0 +1,131 @@
+#!/usr/bin/env bash
+# Created by Cory Dolphin on 03/21/16.
+# Copyright (c) 2016 Twitter. All rights reserved.
+
+# Verifies a zip archive submission of SDKs passes basic static checks for format and contents.
+# This test is likely to generate false positives, e.g. even if your SDK passes this, you still must
+# test integration of your code fully.
+
+# Usage: $ ./validate_zip.sh <path to zip>
+
+set -e
+
+if [ ! -f "$1" ]; then
+	printf "No file found at ${1}\n"
+	printf "Usage: $ ./validate_zip.sh <path to zip>\n"; exit 1; 
+fi
+
+function verifyFramework() {
+	# set -x
+	local FRAMEWORK_PATH=$1
+	local FRAMEWORK_NAME=$(basename $FRAMEWORK_PATH)
+	local PRODUCT="${FRAMEWORK_NAME%.*}"
+	local BINARY_PATH="${FRAMEWORK_PATH}/${PRODUCT}"
+	local HEADER_PATH="${FRAMEWORK_PATH}/Headers"
+	printf "Found $FRAMEWORK_NAME. Verifying...\n"
+
+	local MODULE_MAP=( $(find $FRAMEWORK_PATH -name "*.modulemap") )
+	if [[ -z "$MODULE_MAP" ]]; then
+		printf "ERROR: No modulemap found in $FRAMEWORK_NAME\n";
+		exit 3;
+	fi
+	printf "$FRAMEWORK_NAME contains modulemap: ✓\n"
+
+	# Verify there is a modulemap so Swift can use the framework
+	if grep -q "link" "$MODULE_MAP"; then 
+		printf "$FRAMEWORK_NAME modulemap contains dependent system frameworks ✓\n"
+	else
+		printf "Warning: ${FRAMEWORK_NAME} does not list any system library dependencies. Double check all dependent frameworks and libraries are listed. \n";
+	fi
+
+	# Verify there is at least one header listed in the module map
+	if grep -q ".*.h" "$MODULE_MAP"; then 
+		printf "$FRAMEWORK_NAME modulemap contains headers ✓\n";
+	else
+		printf "Error: ${FRAMEWORK_NAME} does not list any headers in the modulemap\n";
+		exit 4;	
+	fi
+
+	# Verify there is at least a headers folder
+	if [[ ! -d "$HEADER_PATH" ]]; then 
+		printf "ERROR: Headers not not found in ${FRAMEWORK_NAME}\n";
+		exit 5;
+	fi
+
+	# Verify the static lib at least has simulator and the two common ARM architectures
+	local PRESENT_ARCHITECTURES=$( xcrun lipo -info "${BINARY_PATH}" )
+	for arch in "armv7" "arm64" "i386" "x86_64"; do
+		if [[ ! $PRESENT_ARCHITECTURES == *$arch* ]]; then 
+			printf "ERROR: Architecture ${arch} not found in ${FRAMEWORK_NAME}\n";
+			exit 6;
+		fi
+	done
+	printf "$FRAMEWORK_NAME contains simulator and device architectures: ✓\n"
+
+	# Verify there are at least some bitcode segments in the rmv7 and arm64 slices
+	# Note, this is not conclusive, it is possible some symbols are missing the segment
+	for arch in "armv7" "arm64"; do
+		local SYMBOLS=$(otool -l -arch "${arch}" "${BINARY_PATH}")
+ 		if [[ ! $SYMBOLS == *"LLVM"* ]]; then
+			printf "ERROR: Bitcode segments not found in ${FRAMEWORK_NAME}. Users will fail to archive their builds \n";
+			exit 7;
+ 		fi 
+	done
+	printf "$FRAMEWORK_NAME contains bitcode: ✓\n"
+
+	# Verify there is a plist file
+	local PLIST_PATH=( $(find $FRAMEWORK_PATH -name Info.plist) )
+	if [[ -z "$PLIST_PATH" ]]; then
+		printf "ERROR: No Info.plist found in $FRAMEWORK_NAME\n"
+		exit 8;
+	fi
+	printf "$FRAMEWORK_NAME contains Info.plist: ✓\n"
+
+	# Verify there is a bundle identifier in Info.plist
+	# And verify it does not contain any vestigial string templating 
+	local BUNDLE_NAME=$(/usr/libexec/PlistBuddy -c "Print :CFBundleIdentifier" "${PLIST_PATH}")
+	if [[ -z "$BUNDLE_NAME" ]]; then
+		printf "ERROR: Info.plist not found in $FRAMEWORK_NAME or CFBundleIdentifier not set\n";
+		exit 9;
+	elif [[ "$BUNDLE_NAME" == *"$"* ]]; then 
+		printf "ERROR: CFBundleIdentifier is invalid: $BUNDLE_NAME\n";
+		exit 10;
+	else
+		printf "$FRAMEWORK_NAME has bundle: $BUNDLE_NAME ✓\n"
+	fi
+
+	# Verify there is a bundle version in the Info.plist 
+	local BUNDLE_VERSION=$(/usr/libexec/PlistBuddy -c "Print :CFBundleShortVersionString" "${PLIST_PATH}")
+	if [[ -z "$BUNDLE_VERSION" ]]; then
+		printf "ERROR: No CFBundleShortVersionString found in $FRAMEWORK_NAME\n";
+		exit 11;
+	else
+		printf "$FRAMEWORK_NAME has version: $BUNDLE_VERSION ✓\n"
+	fi
+
+	printf "===========================================\n"
+	printf "Analyzed $PRODUCT version $BUNDLE_VERSION. \n"
+	printf "Basic static verifications passed. 🚀🚀🚀 \n"
+	printf "Please perform final verification testing \n\n"
+}
+
+# Extract the zip archive to a temporary location
+TEMP_DIR=$(mktemp -d /tmp/fabric_framework_validation.XXXXX)
+printf "Unzipping $(basename "$1") to $TEMP_DIR\n"
+unzip "$1" -d "$TEMP_DIR" &> /dev/null
+
+# Find frameworks and ensure they are at the top level, e.g. NOT nested within a sub directory
+printf "Scanning for frameworks...\n"
+FRAMEWORKS=( $(find "$TEMP_DIR" -name "*.framework" -maxdepth 1) )
+if [ -z "$FRAMEWORKS" ]; then
+	printf "ERROR: No frameworks found at the top level within the zip archive.";
+	exit 2; 
+fi
+
+# Verify each framework found individually
+for framework in "${FRAMEWORKS[@]}"; do
+	verifyFramework "$framework"
+	printf ""
+done
+
+rm -r "$TEMP_DIR"