implementing #4449

2 files changed, 265 insertions, 1 deletions

diff --git a/src/exchange-tools/taler-exchange-wire.c b/src/exchange-tools/taler-exchange-wire.c
index 81f292a1d..c84c0b693 100644
--- a/src/exchange-tools/taler-exchange-wire.c
+++ b/src/exchange-tools/taler-exchange-wire.c
@@ -177,9 +177,18 @@ run (void *cls,
 
   if (NULL != output_filename)
   {
-    fclose (stdout);
+    if (NULL != stdout)
+      fclose (stdout);
     stdout = fopen (output_filename,
 		    "w+");
+    if (NULL == stdout)
+    {
+      fprintf (stderr,
+               "Failed to open `%s': %s\n",
+               output_filename,
+               STRERROR (errno));
+      return;
+    }
   }
   fprintf (stdout,
 	   "%s",
diff --git a/src/exchange/taler-config-generate b/src/exchange/taler-config-generate
new file mode 100755
index 000000000..5693f920c
--- /dev/null
+++ b/src/exchange/taler-config-generate
@@ -0,0 +1,255 @@
+# This file is in the public domain.
+#!/bin/bash
+#
+
+# Options are:
+# -c FILENAME, --config=FILENAME (where to write config, defaults to ~/.config/taler.conf)
+# -C CURRENCY, --currency=CURRENCY (name of the currency)
+# -e, --exchange (generate configuration for the exchange)
+# -j WIREJSON, --wire-json-merchant=WIREJSON (wire plugin details in JSON)
+# -J WIREJSON, --wire-json-exchange=WIREJSON (wire plugin details in JSON)
+# -m, --merchant (generate configuration for the merchant)
+# -t, --trusted (generate configuration for exchange and merchant, with exchange set as trusted with merchant)
+# -w WIREFORMAT, --wire=WIREFORMAT (which wire plugin should we use)
+# --bank-uri=URI (only for WIREFORMAT='test')
+# --exchange-bank-account=NUMBER (only for WIREFORMAT='test')
+# --merchant-bank-account=NUMBER (only for WIREFORMAT='test')
+
+##########################################
+# set an initial value for the flags
+ARG_CONFIG=~/.config/taler.conf
+ARG_CURRENCY=
+ARG_E=0
+ARG_H=0
+ARG_JE=
+ARG_JM=
+ARG_M=0
+ARG_T=0
+ARG_W=test
+ARG_BANK_URI=
+ARG_EXCHANGE_BANK_ACCOUNT=
+ARG_MERCHANT_BANK_ACCOUNT=
+
+##################################
+# read the options
+TEMP=`getopt -o c:C:ehj:J:mtw: --long config:,currency:,exchange,help,wire-json-exchange:,wire-json-merchant:,merchant,trusted,wire:,bank-uri:,exchange-bank-account:,merchant-bank-account: -n 'taler-config-generate' -- "$@"`
+eval set -- "$TEMP"
+
+####################################################
+# extract options and their arguments into variables.
+while true ; do
+    case "$1" in
+        -c|--config)
+            ARG_CONFIG="$2"
+            shift 2 ;;
+        -C|--currency)
+            ARG_CURRENCY="$2"
+            shift 2 ;;
+        -e|--exchange)
+            ARG_E=1
+            shift ;;
+        -h|--help)
+            ARG_H=1
+            shift ;;
+        -j|--wire-json-merchant)
+            ARG_JM="$2"
+            shift 2 ;;
+        -J|--wire-json-exchange)
+            ARG_JE="$2"
+            shift 2 ;;
+        -m|--merchant)
+            ARG_M=1
+            shift ;;
+        -t|--trusted)
+            ARG_T=1
+            shift ;;
+        -w|--wire)
+            ARG_W="$2"
+            shift 2 ;;
+        --bank-uri)
+            ARG_BANK_URI="$2"
+            shift 2 ;;
+        --exchange-bank-account)
+            ARG_EXCHANGE_BANK_ACCOUNT="$2"
+            shift 2 ;;
+        --merchant-bank-account)
+            ARG_MERCHANT_BANK_ACCOUNT="$2"
+            shift 2 ;;
+        --) shift ; break ;;
+        *) echo "Internal error!" ; exit 1 ;;
+    esac
+done
+
+##########################################
+# Handle -h
+if (test 1 == "$ARG_H")
+then
+  exec man taler-config-generate
+  exit 1
+fi
+
+#########################################
+# General preparations
+CS="taler-config -c $ARG_CONFIG"
+touch "$ARG_CONFIG"
+
+
+#########################################
+# Configure currency in main configuration
+if (test ! -z "$ARG_CURRENCY")
+then
+  $CS -s taler -o CURRENCY -V "$ARG_CURRENCY" || exit 1
+else
+  ARG_CURRENCY=`$CS -s taler -o CURRENCY`
+fi
+
+##########################################
+# Assemble JSON description of wireformat for "test" if we can
+if (test "test" = "$ARG_W")
+then
+  if (test ! -z "$ARG_BANK_URI" -a ! -z "$ARG_MERCHANT_BANK_ACCOUNT")
+  then
+    ARG_JM="{\"type\":\"test\",\"bank_uri\":\"$ARG_BANK_URI\",\"account_number\":$ARG_MERCHANT_BANK_ACCOUNT}"
+#    echo "Account detail: $ARG_JM"
+  else
+    echo "Bank URI or account not given, skipping JSON generation for merchant"
+  fi
+  if (test ! -z "$ARG_BANK_URI" -a ! -z "$ARG_EXCHANGE_BANK_ACCOUNT")
+  then
+    ARG_JE="{\"type\":\"test\",\"bank_uri\":\"$ARG_BANK_URI\",\"account_number\":$ARG_EXCHANGE_BANK_ACCOUNT}"
+#    echo "Account detail: $ARG_JE"
+  else
+    echo "Bank URI or account not given, skipping JSON generation for exchange"
+  fi
+else
+  echo "Wire format is not 'test', not auto-generating JSON"
+fi
+
+###########################################
+# Generate merchant-specific configuration
+if (test 1 = "$ARG_M")
+then
+  $CS -s merchant -o WIREFORMAT -V "$ARG_W" || exit 1
+
+  if (test ! -z "$ARG_JM")
+  then
+    JSONF=`$CS -s merchant-wireformat -o ${ARG_W}_RESPONSE_FILE -f`
+    mkdir -p `dirname "$JSONF"`
+    echo "$ARG_J" > "$JSONF" || exit 1
+  else
+    echo "Skipped generating wire details for merchant"
+  fi
+else
+  echo "Skipped merchant setup"
+fi
+
+
+############################################
+# Generate exchange-specific configuration
+
+if (test 1 = "$ARG_E")
+then
+
+  MASTER_KEY=`$CS -f -s exchange -o MASTER_PRIV_FILE`
+
+# Generate master key (if missing)
+  if (test ! -e "$MASTER_KEY")
+  then
+    mkdir -p `dirname "$MASTER_KEY"`
+    gnunet-ecc -g 1 "$MASTER_KEY" || exit 1
+  fi
+
+# Obtain public master key of exchange
+  MASTER_PUB=`gnunet-ecc -p "$MASTER_KEY"`
+
+# Setup wire format
+  $CS -s exchange -o WIREFORMAT -V "$ARG_W" || exit 1
+# Setup master public key
+  $CS -s exchange -o MASTER_PUBLIC_KEY -V "$MASTER_PUB" || exit 1
+# If possible, initialize outgoing wire account details ('test' method only)
+  if (test "test" = "$ARG_W" -a ! -z "$ARG_BANK_URI")
+  then
+    $CS -s exchange-wire-outgoing-test -o BANK_URI -V "$ARG_BANK_URI" || exit 1
+  else
+    echo "Skipped generating outgoing wire account details for exchange"
+  fi
+  if (test "test" = "$ARG_W" -a ! -z "$ARG_EXCHANGE_BANK_ACCOUNT")
+  then
+    $CS -s exchange-wire-outgoing-test -o BANK_ACCOUNT_NUMBER -V "$ARG_EXCHANGE_BANK_ACCOUNT" || exit 1
+  else
+    echo "Skipped generating outgoing wire account details for exchange"
+  fi
+# If possible, initialize /wire response from JSON (with signature)
+  if (test ! -z $ARG_JE)
+  then
+    JSONF=`$CS -s exchange-wire-incoming-${ARG_W} -o ${ARG_W}_RESPONSE_FILE -f`
+#    echo "Generating /wire response at $JSONF"
+    mkdir -p `dirname $JSONF`
+    taler-exchange-wire -c "$ARG_CONFIG" -t "$ARG_W" -j "$ARG_JE" -m "$MASTER_KEY" -o "$JSONF" || exit 1
+  else
+    echo "Skipped generating /wire response for exchange"
+  fi
+else
+  echo "Skipped exchange setup"
+fi
+
+########################################
+# setup trust in exchange with merchant
+if (test 1 = "$ARG_T")
+then
+  if (test 1 = "$ARG_E")
+  then
+    EPORT=`$CS -s exchange -o PORT`
+    $CS -s merchant-exchange-test -o URI -V "http://localhost:$EPORT/" || exit
+    $CS -s merchant-exchange-test -o MASTER_KEY -V "$MASTER_KEY"
+  else
+    echo "Need to be configuring exchange as well for -t to be useful."
+  fi
+fi
+
+
+###################################################
+# Generate coin configuration
+for FRACTION in 1 2 4 8 16 32 64
+do
+  SECTION="coin_${ARG_CURRENCY}_ct_${FRACTION}"
+  $CS -s $SECTION -o value -V ${ARG_CURRENCY}:0.${FRACTION} || exit 1
+  $CS -s $SECTION -o duration_overlap -V "1 day" || exit 1
+  $CS -s $SECTION -o duration_withdraw -V "7 days" || exit 1
+  $CS -s $SECTION -o duration_spend -V "2 years" || exit 1
+  $CS -s $SECTION -o duration_legal -V "3 tears" || exit 1
+  $CS -s $SECTION -o fee_withdraw -V "${ARG_CURRENCY}:0.01" || exit 1
+  $CS -s $SECTION -o fee_deposit -V "${ARG_CURRENCY}:0.01" || exit 1
+  $CS -s $SECTION -o fee_refresh -V "${ARG_CURRENCY}:0.01" || exit 1
+  $CS -s $SECTION -o fee_refund -V "${ARG_CURRENCY}:0.01" || exit 1
+  $CS -s $SECTION -o rsa_keysize -V 1024 || exit 1
+done
+
+for VALUE in 1 2 4 8 16 32 64
+do
+  SECTION="coin_${ARG_CURRENCY}_${VALUE}"
+  $CS -s $SECTION -o value -V ${ARG_CURRENCY}:${VALUE} || exit 1
+  $CS -s $SECTION -o duration_overlap -V "1 day" || exit 1
+  $CS -s $SECTION -o duration_withdraw -V "7 days" || exit 1
+  $CS -s $SECTION -o duration_spend -V "2 years" || exit 1
+  $CS -s $SECTION -o duration_legal -V "3 tears" || exit 1
+  $CS -s $SECTION -o fee_withdraw -V "${ARG_CURRENCY}:0.01" || exit 1
+  $CS -s $SECTION -o fee_deposit -V "${ARG_CURRENCY}:0.01" || exit 1
+  $CS -s $SECTION -o fee_refresh -V "${ARG_CURRENCY}:0.01" || exit 1
+  $CS -s $SECTION -o fee_refund -V "${ARG_CURRENCY}:0.01" || exit 1
+  $CS -s $SECTION -o rsa_keysize -V 1024 || exit 1
+done
+
+#######################################################
+# Clean up configuration: only keep differences to defaults
+$CS -w || exit
+
+
+#######################################################
+# Let user know what is next...
+
+echo "All done."
+if (test "$ARG_E" = 1)
+then
+  echo "You probably want to run 'taler-exchange-keyup' next."
+fi