sandboxed-api/oss-internship-2020/libarchive/examples/sapi_minitar_main.cc

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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// This file contains the main function from the original minitar example:
// https://github.com/libarchive/libarchive/blob/master/examples/minitar/minitar.c
// Most of the logic is the same, it was only simplified a bit since this is
// only used for the command line tool.
// No sandboxing takes place in this function.
#include <iostream>
#include "sapi_minitar.h" // NOLINT(build/include)
static void PrintUsage() {
/* Many program options depend on compile options. */
const char* m =
"Usage: minitar [-"
"c"
"j"
"tvx"
"y"
"Z"
"z"
"] [-f file] [file]\n";
std::cout << m << std::endl;
exit(EXIT_FAILURE);
}
int main(int unused_argc, char* argv[]) {
sapi::InitLogging(argv[0]);
const char* filename = nullptr;
int compress;
int flags;
int mode;
int opt;
mode = 'x';
int verbose = 0;
compress = '\0';
flags = ARCHIVE_EXTRACT_TIME;
while (*++argv != nullptr && **argv == '-') {
const char* p = *argv + 1;
while ((opt = *p++) != '\0') {
switch (opt) {
case 'c':
mode = opt;
break;
case 'f':
if (*p != '\0')
filename = p;
else
filename = *++argv;
p += strlen(p);
break;
case 'j':
compress = opt;
break;
case 'p':
flags |= ARCHIVE_EXTRACT_PERM;
flags |= ARCHIVE_EXTRACT_ACL;
flags |= ARCHIVE_EXTRACT_FFLAGS;
break;
case 't':
mode = opt;
break;
case 'v':
verbose++;
break;
case 'x':
mode = opt;
break;
case 'y':
compress = opt;
break;
case 'Z':
compress = opt;
break;
case 'z':
compress = opt;
break;
default:
PrintUsage();
}
}
}
absl::Status status;
switch (mode) {
case 'c':
status = CreateArchive(filename, compress, argv, verbose);
if (!status.ok()) {
LOG(ERROR) << "Archive creation failed with message: "
<< status.message();
return EXIT_FAILURE;
}
break;
case 't':
status = ExtractArchive(filename, 0, flags, verbose);
if (!status.ok()) {
LOG(ERROR) << "Archive extraction failed with message: "
<< status.message();
return EXIT_FAILURE;
}
break;
case 'x':
status = ExtractArchive(filename, 1, flags, verbose);
if (!status.ok()) {
LOG(ERROR) << "Archive extraction failed with message: "
<< status.message();
return EXIT_FAILURE;
}
break;
}
return EXIT_SUCCESS;
}