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Add support for using file descriptors as input and output

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Fixes #12
This commit is contained in:
Paul Schaub 2022-11-11 15:56:33 +01:00
parent 3ee42ea2ed
commit 4bc45a0692
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
4 changed files with 40 additions and 7 deletions
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41
sop-java-picocli/src/main/java/sop/cli/picocli/commands/AbstractSopCmd.java
View file

@ -13,6 +13,7 @@ import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
@ -21,6 +22,7 @@ import java.util.Collection;
import java.util.Date;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.regex.Pattern;
public abstract class AbstractSopCmd implements Runnable {
@ -40,6 +42,8 @@ public abstract class AbstractSopCmd implements Runnable {
public static final Date BEGINNING_OF_TIME = new Date(0);
public static final Date END_OF_TIME = new Date(8640000000000000L);
public static final Pattern PATTERN_FD = Pattern.compile("^\\d{1,3}$");
protected final ResourceBundle messages;
protected EnvironmentVariableResolver envResolver = System::getenv;
@ -141,9 +145,14 @@ public abstract class AbstractSopCmd implements Runnable {
throw new SOPGPException.AmbiguousInput(errorMsg);
}
String errorMsg = getMsg("sop.error.indirect_data_type.designator_fd_not_supported");
throw new SOPGPException.UnsupportedSpecialPrefix(errorMsg);
File fdFile = fileDescriptorFromString(trimmed);
try {
FileInputStream fileIn = new FileInputStream(fdFile);
return fileIn;
} catch (FileNotFoundException e) {
String errorMsg = getMsg("sop.error.indirect_data_type.file_descriptor_not_found", fdFile.getAbsolutePath());
throw new IOException(errorMsg, e);
}
} else {
File file = new File(trimmed);
if (!file.exists()) {
@ -176,9 +185,16 @@ public abstract class AbstractSopCmd implements Runnable {
throw new SOPGPException.UnsupportedSpecialPrefix(errorMsg);
}
// File Descriptor
if (trimmed.startsWith(PRFX_FD)) {
String errorMsg = getMsg("sop.error.indirect_data_type.designator_fd_not_supported");
throw new SOPGPException.UnsupportedSpecialPrefix(errorMsg);
File fdFile = fileDescriptorFromString(trimmed);
try {
FileOutputStream fout = new FileOutputStream(fdFile);
return fout;
} catch (FileNotFoundException e) {
String errorMsg = getMsg("sop.error.indirect_data_type.file_descriptor_not_found", fdFile.getAbsolutePath());
throw new IOException(errorMsg, e);
}
}
File file = new File(trimmed);
@ -194,6 +210,21 @@ public abstract class AbstractSopCmd implements Runnable {
return new FileOutputStream(file);
}
public File fileDescriptorFromString(String fdString) {
File fdDir = new File("/dev/fd/");
if (!fdDir.exists()) {
String errorMsg = getMsg("sop.error.indirect_data_type.designator_fd_not_supported");
throw new SOPGPException.UnsupportedSpecialPrefix(errorMsg);
}
String fdNumber = fdString.substring(PRFX_FD.length());
if (!PATTERN_FD.matcher(fdNumber).matches()) {
throw new IllegalArgumentException("File descriptor must be a 1-3 digit, positive number.");
}
File descriptor = new File(fdDir, fdNumber);
return descriptor;
}
public static String stringFromInputStream(InputStream inputStream) throws IOException {
try {
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();

1
sop-java-picocli/src/main/resources/msg_sop.properties
View file

@ -48,6 +48,7 @@ sop.error.input.stdin_not_openpgp_data=Standard Input appears not to contain val
sop.error.indirect_data_type.ambiguous_filename=File name '%s' is ambiguous. File with the same name exists on the filesystem.
sop.error.indirect_data_type.environment_variable_not_set=Environment variable '%s' not set.
sop.error.indirect_data_type.environment_variable_empty=Environment variable '%s' is empty.
sop.error.indirect_data_type.file_descriptor_not_found=File descriptor '%s' not found.
sop.error.indirect_data_type.input_file_does_not_exist=Input file '%s' does not exist.
sop.error.indirect_data_type.input_not_a_file=Input file '%s' is not a file.
sop.error.indirect_data_type.output_file_already_exists=Output file '%s' already exists.

1
sop-java-picocli/src/main/resources/msg_sop_de.properties
View file

@ -48,6 +48,7 @@ sop.error.input.stdin_not_openpgp_data=Standard-Eingabe enth
sop.error.indirect_data_type.ambiguous_filename=Dateiname '%s' ist mehrdeutig. Datei mit dem selben Namen existiert im Dateisystem.
sop.error.indirect_data_type.environment_variable_not_set=Umgebungsvariable '%s' nicht gesetzt.
sop.error.indirect_data_type.environment_variable_empty=Umgebungsvariable '%s' ist leer.
sop.error.indirect_data_type.file_descriptor_not_found=File Descriptor '%s' nicht gefunden.
sop.error.indirect_data_type.input_file_does_not_exist=Quelldatei '%s' existiert nicht.
sop.error.indirect_data_type.input_not_a_file=Quelldatei '%s' ist keine Datei.
sop.error.indirect_data_type.output_file_already_exists=Zieldatei '%s' existiert bereits.

4
sop-java-picocli/src/test/java/sop/cli/picocli/commands/AbstractSopCmdTest.java
View file

@ -145,8 +145,8 @@ public class AbstractSopCmdTest {
}
@Test
public void getOutput_fdUnsupportedSpecialPrefix() {
assertThrows(SOPGPException.UnsupportedSpecialPrefix.class, () -> abstractCmd.getOutput("@FD:IS_ILLEGAL"));
public void getOutput_malformedFileDescriptor() {
assertThrows(IllegalArgumentException.class, () -> abstractCmd.getOutput("@FD:IS_ILLEGAL"));
}
@Test