Add SHA256 hash to Program interface

Implements the first part of #291

Signed-off-by: Christian Blichmann <cblichmann@google.com>

Ghidra/Features/Base/src/main/java/ghidra/app/util/opinion/AbstractProgramLoader.java

@@ -41,6 +41,7 @@ import ghidra.program.util.DefaultLanguageService;
 import ghidra.program.util.GhidraProgramUtilities;
 import ghidra.util.InvalidNameException;
 import ghidra.util.MD5Utilities;
+import ghidra.util.HashUtilities;
 import ghidra.util.exception.*;
 import ghidra.util.task.TaskMonitor;
 
@@ -285,6 +286,8 @@ public abstract class AbstractProgramLoader implements Loader {
 			}
 			String md5 = computeBinaryMD5(provider);
 			prog.setExecutableMD5(md5);
+			String sha256 = computeBinarySHA256(provider);
+			prog.setExecutableSHA256(sha256);
 
 			if (shouldSetImageBase(prog, imageBase)) {
 				try {
@@ -465,6 +468,12 @@ public abstract class AbstractProgramLoader implements Loader {
 		}
 	}
 
+	private String computeBinarySHA256(ByteProvider provider) throws IOException {
+		try (InputStream in = provider.getInputStream(0)) {
+			return HashUtilities.getHash(HashUtilities.SHA256_ALGORITHM, in);
+		}
+	}
+
 	private boolean shouldSetImageBase(Program prog, Address imageBase) {
 		if (imageBase == null || imageBase instanceof SegmentedAddress) {
 			return false;

Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/ProgramDB.java

@@ -128,6 +128,7 @@ public class ProgramDB extends DomainObjectAdapterDB implements Program, ChangeM
 	private static final String EXECUTABLE_PATH = "Executable Location";
 	private static final String EXECUTABLE_FORMAT = "Executable Format";
 	private static final String EXECUTABLE_MD5 = "Executable MD5";
+	private static final String EXECUTABLE_SHA256 = "Executable SHA256";
 	private static final String TABLE_NAME = "Program";
 	private static final String EXECUTE_PATH = "Execute Path";
 	private static final String EXECUTE_FORMAT = "Execute Format";
@@ -716,7 +717,6 @@ public class ProgramDB extends DomainObjectAdapterDB implements Program, ChangeM
 	}
 
 	/**
-	 * 
 	 * @see ghidra.program.model.listing.Program#setExecutableFormat(java.lang.String)
 	 */
 	@Override
@@ -742,7 +742,6 @@ public class ProgramDB extends DomainObjectAdapterDB implements Program, ChangeM
 	}
 
 	/**
-	 * 
 	 * @see ghidra.program.model.listing.Program#setExecutableMD5(java.lang.String)
 	 */
 	@Override
@@ -752,6 +751,31 @@ public class ProgramDB extends DomainObjectAdapterDB implements Program, ChangeM
 		changed = true;
 	}
 
+	/**
+	 * @see ghidra.program.model.listing.Program#getExecutableSHA256()
+	 */
+	@Override
+	public String getExecutableSHA256() {
+		String format = null;
+		try {
+			Options pl = getOptions(PROGRAM_INFO);
+			format = pl.getString(EXECUTABLE_SHA256, (String) null);
+		}
+		catch (Exception e) {
+		}
+		return format == null ? UNKNOWN : format;
+	}
+
+	/**
+	 * @see ghidra.program.model.listing.Program#setExecutableSHA256(java.lang.String)
+	 */
+	@Override
+	public void setExecutableSHA256(String sha256) {
+		Options pl = getOptions(PROGRAM_INFO);
+		pl.setString(EXECUTABLE_SHA256, sha256);
+		changed = true;
+	}
+
 	/**
 	 * @see ghidra.program.model.listing.Program#getCreationDate()
 	 */

Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/listing/Program.java

@@ -190,6 +190,18 @@ public interface Program extends DataTypeManagerDomainObject {
 	 */
 	public void setExecutableMD5(String md5);
 
+	/**
+	 * Sets the value corresponding to the original binary file SHA256 hash.
+	 * @param sha256 SHA256 binary file hash
+	 */
+	public void setExecutableSHA256(String sha256);
+
+	/**
+	 * Returns a value corresponding to the original binary file SHA256 hash.
+	 * May be null if program source did not correspond to a binary file.
+	 */
+	public String getExecutableSHA256();
+
 	/**
 	 * Returns the creation date of this program.
 	 * If the program was created before this property

Ghidra/Framework/SoftwareModeling/src/test/java/ghidra/program/model/ProgramTestDouble.java

@@ -406,6 +406,16 @@ public class ProgramTestDouble implements Program {
 		throw new UnsupportedOperationException();
 	}
 
+	@Override
+	public String getExecutableSHA256() {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void setExecutableSHA256(String sha256) {
+		throw new UnsupportedOperationException();
+	}
+
 	@Override
 	public Date getCreationDate() {
 		throw new UnsupportedOperationException();

Ghidra/Test/IntegrationTest/src/test.slow/java/ghidra/server/remote/ServerTestUtil.java

@@ -786,7 +786,7 @@ public class ServerTestUtil {
 				funcAddr += 2;
 			}
 
-			setProgramMd5(program);
+			setProgramHashes(program);
 
 			ContentHandler contentHandler = DomainObjectAdapter.getContentHandler(program);
 			long checkoutId = contentHandler.createFile(repoFilesystem, null, folderPath, name,
@@ -856,15 +856,17 @@ public class ServerTestUtil {
 	}
 
 	/**
-	 * Sets a dummy MD5 value for the given program.
+	 * Sets dummy hash values for the given program.
 	 *
 	 * @param program the current program
 	 */
-	private static void setProgramMd5(Program program) {
+	private static void setProgramHashes(Program program) {
-		int id = program.startTransaction("setmd5");
+		int id = program.startTransaction("sethashes");
 		try {
 			String md5 = RandomStringUtils.randomNumeric(32);
 			program.setExecutableMD5(md5);
+			String sha256 = RandomStringUtils.randomNumeric(64);
+			program.setExecutableSHA256(sha256);
 		}
 		finally {
 			program.endTransaction(id, true);