[PATCH] *.sh: Fix kornsh-ism test(1) invocations

[Bernhard Reutner-Fischer]

s/==/=/g
s/]]/]/g
s/\[\[/[/g

The POSIXly correct shorthand of test(1) is [, not [[
and string comparison is POSIXly correct =, not ==.
---
 android/fetch.sh       |  4 ++--
 trojans/csd-post.sh    |  8 ++++----
 trojans/csd-wrapper.sh | 24 ++++++++++++------------
 3 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/android/fetch.sh b/android/fetch.sh
index 9012eec5..97a87c0b 100755
--- a/android/fetch.sh
+++ b/android/fetch.sh
@@ -51,7 +51,7 @@ function make_url
 	local pkg="${tarball%-*}"
 	pkg="${pkg/-/_}"
 
-	if [[ "$pkg" =~ [^[:alnum:]_] ]]; then
+	if [ "$pkg" =~ [^[:alnum:]_] ]; then
 		echo ""
 		return
 	fi
@@ -64,7 +64,7 @@ function make_url
 		return
 	fi
 
-	if [[ "${mirror_base}" = *//github.com*/archive* ]]; then
+	if [ "${mirror_base}" = *//github.com*/archive* ]; then
 		# typical format: https://github.com/USER/PKG/archive/TAG.tar.gz
 		echo "${mirror_base}/${tarball#*-}"
 	else
diff --git a/trojans/csd-post.sh b/trojans/csd-post.sh
index b7c935ac..fb18f2da 100755
--- a/trojans/csd-post.sh
+++ b/trojans/csd-post.sh
@@ -26,12 +26,12 @@ fi
 # to true if using an earlier version of cURL.
 
 MISSING_OPTION_PINNEDPUBKEY=false
-if [[ "$MISSING_OPTION_PINNEDPUBKEY" == "true" ]]; then
+if [ "$MISSING_OPTION_PINNEDPUBKEY" = "true" ]; then
     echo "*********************************************************************" >&2
     echo "WARNING: running insecurely; will not validate CSD server certificate" >&2
     echo "*********************************************************************" >&2
     PINNEDPUBKEY="-k"
-elif [[ -z "$CSD_SHA256" ]]; then
+elif [ -z "$CSD_SHA256" ]; then
     # We must be running with a version of OpenConnect prior to v8.00 if CSD_SHA256
     # is unset. In that case, fallback to cURL's default certificate validation so
     # as to fail-closed rather than fail-open in the case of an unknown or untrusted
@@ -91,8 +91,8 @@ TICKET=
 STUB=0
 
 while [ "$1" ]; do
-    if [ "$1" == "-ticket" ];   then shift; TICKET=${1//\"/}; fi
-    if [ "$1" == "-stub" ];     then shift; STUB=${1//\"/}; fi
+    if [ "$1" = "-ticket" ];   then shift; TICKET=${1//\"/}; fi
+    if [ "$1" = "-stub" ];     then shift; STUB=${1//\"/}; fi
     shift
 done
 
diff --git a/trojans/csd-wrapper.sh b/trojans/csd-wrapper.sh
index 275b7ecc..b6187cee 100755
--- a/trojans/csd-wrapper.sh
+++ b/trojans/csd-wrapper.sh
@@ -21,13 +21,13 @@ BIN_DIR="$HOSTSCAN_DIR/bin"
 # to true if using an earlier version of cURL.
 
 MISSING_OPTION_PINNEDPUBKEY=false
-if [[ "$MISSING_OPTION_PINNEDPUBKEY" == "true" ]]; then
+if [ "$MISSING_OPTION_PINNEDPUBKEY" = "true" ]; then
     # Don't validate server certificate at all
     echo "*********************************************************************" >&2
     echo "WARNING: running insecurely; will not validate CSD server certificate" >&2
     echo "*********************************************************************" >&2
     PINNEDPUBKEY="-k"
-elif [[ -z "$CSD_SHA256" ]]; then
+elif [ -z "$CSD_SHA256" ]; then
     # We must be running with a version of OpenConnect prior to v8.00 if CSD_SHA256
     # is unset. In that case, fallback to cURL's default certificate validation so
     # as to fail-closed rather than fail-open in the case of an unknown or untrusted
@@ -52,18 +52,18 @@ CERTHASH=
 LANGSELEN=
 
 while [ "$1" ]; do
-    if [ "$1" == "-ticket" ];   then shift; TICKET=$1; fi
-    if [ "$1" == "-stub" ];     then shift; STUB=$1; fi
-    if [ "$1" == "-group" ];    then shift; GROUP=$1; fi
-    if [ "$1" == "-certhash" ]; then shift; CERTHASH=$1; fi
-    if [ "$1" == "-url" ];      then shift; URL=$(echo $1|tr -d '"'); fi # strip quotes
-    if [ "$1" == "-langselen" ];then shift; LANGSELEN=$1; fi
+    if [ "$1" = "-ticket" ];   then shift; TICKET=$1; fi
+    if [ "$1" = "-stub" ];     then shift; STUB=$1; fi
+    if [ "$1" = "-group" ];    then shift; GROUP=$1; fi
+    if [ "$1" = "-certhash" ]; then shift; CERTHASH=$1; fi
+    if [ "$1" = "-url" ];      then shift; URL=$(echo $1|tr -d '"'); fi # strip quotes
+    if [ "$1" = "-langselen" ];then shift; LANGSELEN=$1; fi
     shift
 done
 
 ARCH=$(uname -m)
 
-if [[ "$ARCH" == "x86_64" ]]
+if [ "$ARCH" = "x86_64" ]
 then
     ARCH="linux_x64"
 else
@@ -72,7 +72,7 @@ fi
 
 # creating dirs
 for dir in $HOSTSCAN_DIR $LIB_DIR $BIN_DIR ; do
-    if [[ ! -f $dir ]]
+    if [ ! -f $dir ]
     then
         mkdir -p $dir
     fi
@@ -121,10 +121,10 @@ while read HASHTYPE FILE EQU HASHVAL; do
         curl $PINNEDPUBKEY -s "${URL}/sdesktop/hostscan/$ARCH/$FILE" -o "${TMPFILE}"
 
         # some files are in gz (don't understand logic here)
-        if [[ ! -f "${TMPFILE}" || ! -s "${TMPFILE}" ]]
+        if [ ! -f "${TMPFILE}" || ! -s "${TMPFILE}" ]
         then
             # remove 0 size files
-            if [[ ! -s ${TMPFILE} ]]; then
+            if [ ! -s ${TMPFILE} ]; then
                 rm ${TMPFILE}
             fi
 
-- 
2.37.2