ready for PR

www/cgi-bin/atinout_handler.sh

@@ -0,0 +1,61 @@
+#!/bin/sh
+
+# Function to URL-decode the input
+urldecode() {
+    local data="$1"
+    echo -e "$(echo "$data" | sed 's/+/ /g;s/%\(..\)/\\x\1/g;')"
+}
+
+# Set content-type for JSON response
+echo "Content-type: application/json"
+echo ""
+
+# Read the input from POST data
+read INPUT_DATA
+
+# Extract the command from the input data (format: command=AT+COMMAND)
+RAW_COMMAND=$(echo "$INPUT_DATA" | sed 's/command=//g')
+
+# URL-decode the command
+COMMAND=$(urldecode "$RAW_COMMAND")
+
+# Save the command input to a unique at_input file
+AT_INPUT_FILE="/tmp/at_input_$$.txt"
+echo "$COMMAND" > "$AT_INPUT_FILE"
+
+# Define unique input/output files and AT port
+INPUT_FILE="/tmp/input_$$.txt"
+OUTPUT_FILE="/tmp/output_$$.txt"
+AT_PORT="/dev/smd11"
+
+# Ensure exclusive access to the AT port to avoid overloading smd11
+(
+    flock -x 200
+
+    # Copy the user input to the input file
+    cp "$AT_INPUT_FILE" "$INPUT_FILE"
+
+    # Run the command using atinout
+    atinout "$INPUT_FILE" "$AT_PORT" "$OUTPUT_FILE"
+) 200>/tmp/atinout.lock
+
+# Read the output from output.txt
+OUTPUT=$(cat "$OUTPUT_FILE")
+
+# Escape special characters (like newlines and double quotes) for JSON compatibility
+ESCAPED_OUTPUT=$(echo "$OUTPUT" | sed ':a;N;$!ba;s/\n/\\n/g; s/"/\\"/g')
+
+# Escape double quotes in the command for JSON compatibility
+ESCAPED_COMMAND=$(echo "$COMMAND" | sed 's/"/\\"/g')
+
+# Create the JSON response
+JSON_RESPONSE=$(printf "{\"command\":\"%s\",\"output\":\"%s\"}" "$ESCAPED_COMMAND" "$ESCAPED_OUTPUT")
+
+# Log the JSON response to the debug log
+echo "$JSON_RESPONSE" >> /tmp/cgi_debug.log
+
+# Return the output as a valid JSON response
+echo "$JSON_RESPONSE"
+
+# Clean up temporary files
+rm "$AT_INPUT_FILE" "$INPUT_FILE" "$OUTPUT_FILE"