compatibility with "pretty" json (fixes #202)

CHANGELOG

@@ -14,6 +14,7 @@ This file contains a log of major changes in letsencrypt.sh
 ### Fixed
 - Fixed bug with uppercase names in domains.txt (script now converts everything to lowercase)
 - mktemp no longer uses the deprecated `-t` parameter.
+- Compatibility with "pretty" json
 
 ## [0.1.0] - 2016-03-25
 ### Changed

letsencrypt.sh

@@ -209,6 +209,11 @@ _exiterr() {
   exit 1
 }
 
+# Remove newlines and whitespace from json
+clean_json() {
+  tr -d '\r\n' | _sed -e 's/ +/ /g' -e 's/\{ /{/g' -e 's/ \}/}/g' -e 's/\[ /[/g' -e 's/ \]/]/g'
+}
+
 # Encode data as url-safe formatted base64
 urlbase64() {
   # urlbase64: base64 encoded string with '+' replaced with '-' and '/' replaced with '_'
@@ -376,7 +381,7 @@ sign_csr() {
   for altname in ${altnames}; do
     # Ask the acme-server for new challenge token and extract them from the resulting json block
     echo " + Requesting challenge for ${altname}..."
-    response="$(signed_request "${CA_NEW_AUTHZ}" '{"resource": "new-authz", "identifier": {"type": "dns", "value": "'"${altname}"'"}}')"
+    response="$(signed_request "${CA_NEW_AUTHZ}" '{"resource": "new-authz", "identifier": {"type": "dns", "value": "'"${altname}"'"}}' | clean_json)"
 
     challenges="$(printf '%s\n' "${response}" | sed -n 's/.*\("challenges":[^\[]*\[[^]]*]\).*/\1/p')"
     repl=$'\n''{' # fix syntax highlighting in Vim
@@ -428,7 +433,7 @@ sign_csr() {
 
     # Ask the acme-server to verify our challenge and wait until it is no longer pending
     echo " + Responding to challenge for ${altname}..."
-    result="$(signed_request "${challenge_uris[${idx}]}" '{"resource": "challenge", "keyAuthorization": "'"${keyauth}"'"}')"
+    result="$(signed_request "${challenge_uris[${idx}]}" '{"resource": "challenge", "keyAuthorization": "'"${keyauth}"'"}' | clean_json)"
 
     reqstatus="$(printf '%s\n' "${result}" | get_json_string_value status)"
 
@@ -678,7 +683,7 @@ command_revoke() {
   echo "Revoking ${cert}"
 
   cert64="$(openssl x509 -in "${cert}" -inform PEM -outform DER | urlbase64)"
-  response="$(signed_request "${CA_REVOKE_CERT}" '{"resource": "revoke-cert", "certificate": "'"${cert64}"'"}')"
+  response="$(signed_request "${CA_REVOKE_CERT}" '{"resource": "revoke-cert", "certificate": "'"${cert64}"'"}' | clean_json)"
   # if there is a problem with our revoke request _request (via signed_request) will report this and "exit 1" out
   # so if we are here, it is safe to assume the request was successful
   echo " + Done."