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/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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
*
* http://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.
*/
#include "common.h"
#include <android/api-level.h>
#include <arpa/inet.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
namespace {
bool strEqual(const char *a, const char *b) {
return strcmp(a, b) == 0;
}
// Allow specifying network handles in decimal and hexadecimal.
bool parseNetworkHandle(const char *arg, net_handle_t *nethandle) {
if (arg == nullptr || !isdigit(arg[0]) || nethandle == nullptr) {
return false;
}
net_handle_t nh;
char *end = nullptr;
nh = strtoull(arg, &end, 0);
if (end != nullptr && *end == '\0') {
*nethandle = nh;
return true;
}
return false;
}
} // namespace
void printUsage(const char *progname) {
std::cerr << "Usage: " << progname
<< " [--nethandle <nethandle>]"
<< " [--mode explicit|process]"
<< " [--family unspec|ipv4|ipv6]"
<< " <argument>"
<< std::endl;
std::cerr << std::endl;
std::cerr << "Learn nethandle values from 'dumpsys connectivity --short' "
<< "or 'dumpsys connectivity --diag'"
<< std::endl;
}
Arguments::~Arguments() {}
bool Arguments::parseArguments(int argc, const char* argv[]) {
if (argc < 1 || argv == nullptr) { return false; }
for (int i = 1; i < argc; i++) {
if (strEqual(argv[i], "--nethandle")) {
i++;
if (argc == i) break;
if (!parseNetworkHandle(argv[i], &nethandle)) {
std::cerr << "Failed to parse nethandle: '" << argv[i] << "'"
<< std::endl;
break;
}
} else if (strEqual(argv[i], "--family")) {
i++;
if (argc == i) break;
if (strEqual(argv[i], "unspec")) {
family = AF_UNSPEC;
} else if (strEqual(argv[i], "ipv4")) {
family = AF_INET;
} else if (strEqual(argv[i], "ipv6")) {
family = AF_INET6;
} else {
break;
}
} else if (strEqual(argv[i], "--mode")) {
i++;
if (argc == i) break;
if (strEqual(argv[i], "explicit")) {
api_mode = ApiMode::EXPLICIT;
} else if (strEqual(argv[i], "process")) {
api_mode = ApiMode::PROCESS;
} else {
break;
}
} else if (arg1 == nullptr) {
arg1 = argv[i];
} else {
arg1 = nullptr;
break;
}
}
if (arg1 != nullptr) {
return true;
}
printUsage(argv[0]);
return false;
}
std::string inetSockaddrToString(const sockaddr* sa) {
const bool is_ipv6 = (sa->sa_family == AF_INET6);
char host[INET6_ADDRSTRLEN];
char port[sizeof("65535")];
getnameinfo(sa, is_ipv6 ? sizeof(sockaddr_in6) : sizeof(sockaddr_in),
host, sizeof(host),
port, sizeof(port),
NI_NUMERICHOST | NI_NUMERICSERV);
if (port[0] == '0' || port[0] == '\0') {
return std::string(host);
}
return (is_ipv6 ? "[" : "") + std::string(host) + (is_ipv6 ? "]:" : ":") + std::string(port);
}
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