gmgauthier/passwdgen
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revisions and code cleanup
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This commit is contained in:
Greg Gauthier 2025-09-05 11:59:22 +01:00
parent 37c156b24a
commit a30101f3aa
1 changed files with 33 additions and 34 deletions
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67
passwdgen.cpp
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@ -10,16 +10,17 @@
std::string random_string(std::size_t length, bool punc) { std::string random_string(std::size_t length, bool punc) {
std::string CHARACTERS; std::string CHARACTERS;
std::string ALPHANUM = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; std::string ALPHANUM = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
std::string SPECIALS = "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~"; const std::string SPECIALS = "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~";
if (punc) { if (punc) {
CHARACTERS = ALPHANUM.append(SPECIALS); CHARACTERS = ALPHANUM.append(SPECIALS);
} else { } else {
CHARACTERS = ALPHANUM; CHARACTERS = ALPHANUM;
} }
std::random_device random_device; std::random_device random_device;
std::mt19937 generator(random_device()); std::mt19937 generator(random_device());
std::uniform_int_distribution<> distribution(0.0, CHARACTERS.size() - 1.0); std::uniform_int_distribution<> distribution(0, static_cast<int>(CHARACTERS.size() - 1));
std::string random_string; std::string random_string;
for (std::size_t i = 0; i < length; ++i) { for (std::size_t i = 0; i < length; ++i) {
@ -28,8 +29,8 @@ std::string random_string(std::size_t length, bool punc) {
return random_string; return random_string;
} }
void show_usage(std::string binname) { void show_usage(const std::string& name) {
std::cerr << "Usage: " << binname << " [OPTIONS] " << std::endl std::cerr << "Usage: " << name << " [OPTIONS] " << std::endl
<< "Options:" << std::endl << "Options:" << std::endl
<< "\t-h, --help \t\tShow this help message" << std::endl << "\t-h, --help \t\tShow this help message" << std::endl
<< "\t-l, --length [n] \t\tThe length of the password (default: 32)" << std::endl << "\t-l, --length [n] \t\tThe length of the password (default: 32)" << std::endl
@ -38,43 +39,41 @@ void show_usage(std::string binname) {
} }
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
std::string passlenstr; int passwordLength = 0;
int passlen = 0;
bool punc = false; bool punc = false;
if (argc < 1) { if (argc < 1) {
std::cout << random_string(32, false) << std::endl; std::cout << random_string(32, false) << std::endl;
return 0; return 0;
} else { }
for (int i = 1; i < argc; ++i) { for (int i = 1; i < argc; ++i) {
std::string arg = argv[i]; std::string arg = argv[i];
if ((arg == "-h") || (arg == "--help")) { if ((arg == "-h") || (arg == "--help")) {
show_usage(argv[0]); show_usage(argv[0]);
return 0; return 0;
} else if (arg == "-p") { }
punc = true; if (arg == "-p") {
} else if ((arg == "-l") || (arg == "--length")) { punc = true;
if (not argv[i +1]) { } else if ((arg == "-l") || (arg == "--length")) {
std::cerr << "Specify a password length" << std::endl; if (not argv[i +1]) {
return 1; std::cerr << "Specify a password length" << std::endl;
} else { return 1;
passlenstr = argv[i + 1]; }
try { std::string passwordLengthStr = argv[i + 1];
passlen = std::stoi(passlenstr); try {
} catch (const std::invalid_argument& e){ passwordLength = std::stoi(passwordLengthStr);
std::cerr << "Length must be a valid integer" << std::endl; } catch ([[maybe_unused]] const std::invalid_argument& e){
return 1; std::cerr << "Length must be a valid integer" << std::endl;
} return 1;
}
} }
} }
if (passlen == 0) {
passlen = 32;
}
std::string password = random_string(passlen, punc);
std::cout << password << std::endl;
return 0;
} }
if (passwordLength == 0) {
passwordLength = 32;
}
std::string password = random_string(passwordLength, punc);
std::cout << password << std::endl;
return 0;
} }