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check input of length
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@aelnosu
aelnosu committed Sep 12, 2023
1 parent 08a3ace commit 57353d3
Showing 1 changed file with 91 additions and 38 deletions.
129 changes: 91 additions & 38 deletions passward.cpp
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Original file line number Diff line number Diff line change
@@ -1,30 +1,37 @@
#include <iostream>
#include <cstring>
#include <string>
#include <sstream>
#include <random>

using namespace std;

char *safeStrcat(const char *s1, const char *s2){
char *safeStrcat(const char *s1, const char *s2)
{
char *result = (char *)malloc(strlen(s1) + strlen(s2) + 1);
if (result == NULL){
if (result == NULL)
{
return NULL;
}
strcpy(result, s1);
strcat(result, s2);
return result;
}
static const char char_set[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
char *base64Encoder(const char input_str[], int len_str){
char *base64Encoder(const char input_str[], int len_str)
{
char *res_str = (char *)malloc(((len_str * 4 / 3) + 4) * sizeof(char));
if (res_str == NULL){
if (res_str == NULL)
{
return NULL;
}
int index, no_of_bits = 0, padding = 0, val = 0, count = 0, temp;
int i, j, k = 0;
for (i = 0; i < len_str; i += 3){
for (i = 0; i < len_str; i += 3)
{
val = 0, count = 0, no_of_bits = 0;
for (j = i; j < len_str && j <= i + 2; j++){
for (j = i; j < len_str && j <= i + 2; j++)
{
val = val << 8;
val = val | input_str[j];
count++;
Expand All @@ -33,26 +40,30 @@ char *base64Encoder(const char input_str[], int len_str){
padding = no_of_bits % 3;
while (no_of_bits != 0)
{
if (no_of_bits >= 6){
if (no_of_bits >= 6)
{
temp = no_of_bits - 6;
index = (val >> temp) & 63;
no_of_bits -= 6;
}
else{
else
{
temp = 6 - no_of_bits;
index = (val << temp) & 63;
no_of_bits = 0;
}
res_str[k++] = char_set[index];
}
}
for (i = 1; i <= padding; i++){
for (i = 1; i <= padding; i++)
{
res_str[k++] = '=';
}
res_str[k] = '\0';
return res_str;
}
int main(){
int main()
{
random_device rd;
mt19937 gen(rd());
uniform_int_distribution<int> distribution_26(0, 25);
Expand All @@ -71,24 +82,44 @@ int main(){
cin >> name;
cout << "Passward:>Please type the webside you are going to craete a passward for:";
cin >> webside;
cout << "Passward:>Please type how long you want your passward:";
cin >> passwardlength;
while (true){
bool validInput = false;
string input;
while (!validInput)
{
cout << "Passward:>Please type how long you want your passward:";
cin >> input;
stringstream ss(input);
if (ss >> passwardlength)
{
validInput = true;
}
else
{
cout << "Invalid input. Please enter an integer." << std::endl;
cin.clear();
cin.ignore(numeric_limits<streamsize>::max(), '\n');
}
}
while (true)
{
cout << "Passward:>Do you want to use CAPITALIZED letter? [yes/no]:";
cin >> capitalized;
if (capitalized == "yes"){
if (capitalized == "yes")
{
capitalized_int = 1;
cout << "Passward:>Imput accepted as yes. "
<< "Your imput is:" << capitalized;
break;
}
else if (capitalized == "no"){
else if (capitalized == "no")
{
capitalized_int = 0;
cout << "Passward:>Imput accepted as no. "
<< "Your imput is:" << capitalized;
break;
}
else{
else
{
cout << "Error:invalid input please try again.";
}
}
Expand All @@ -97,19 +128,22 @@ int main(){
cout << endl
<< "Passward:>Do you want special letters? [yes/no]:";
cin >> special;
if (special == "yes"){
if (special == "yes")
{
special_int = 1;
cout << "Passward:>Imput accepted as yes. "
<< "Your imput is:" << special;
break;
}
else if (special == "no"){
else if (special == "no")
{
special_int = 0;
cout << "Passward:>Imput accepted as no. "
<< "Your imput is:" << special;
break;
}
else{
else
{
cout << "Passward:>Error:invalid input please try again.";
}
}
Expand All @@ -120,20 +154,23 @@ int main(){
<< "Passward:>Warning:Choosing yes will ignore all settings." << endl
<< "Passward:>Yor input[yes/no]:";
cin >> reversable;
if (reversable == "yes"){
if (reversable == "yes")
{
reversable_int = 1;
// set it to one when algerism is complete.
cout << "Passward:>Imput accepted as yes."
<< "Your imput is:" << reversable;
break;
}
else if (reversable == "no"){
else if (reversable == "no")
{
reversable_int = 0;
cout << "Passward:>Imput accepted as no."
<< "Your imput is:" << reversable;
break;
}
else{
else
{
cout << "Passward:>Error:invalid input please try again.";
}
}
Expand All @@ -144,27 +181,35 @@ int main(){
const char *sname = name.c_str();
const char *surl = webside.c_str();
char *combined_str = safeStrcat(sname, "@");
if (combined_str != NULL){
if (combined_str != NULL)
{
combined_str = safeStrcat(combined_str, surl);
char *encoded_str = base64Encoder(combined_str, strlen(combined_str));
if (encoded_str != NULL){
if (encoded_str != NULL)
{
printf("Encoded string: %s\n", encoded_str);
free(encoded_str);
}
else{
else
{
printf("Memory allocation failed for encoded string.\n");
}
free(combined_str);
}
else{
else
{
printf("Memory allocation failed for combined string.\n");
}
}
else{
if (special_int == 1){
if (capitalized_int == 1){
else
{
if (special_int == 1)
{
if (capitalized_int == 1)
{
cout << "debug: specialcar=true, capitialized=ture" << endl;
if (passwardlength % 3 == 0){
if (passwardlength % 3 == 0)
{
char cch;
string ch;
for (int i = 1; i <= passwardlength / 3; ++i)
Expand All @@ -183,7 +228,8 @@ int main(){
}
else
{
if (passwardlength % 3 == 1){
if (passwardlength % 3 == 1)
{
char cch;
string ch;
passwardlength = passwardlength - 1;
Expand All @@ -203,7 +249,8 @@ int main(){
cout << endl
<< "Debug:EOF=1" << endl;
}
else{
else
{
char cch;
string ch;
passwardlength = passwardlength - 2;
Expand All @@ -230,7 +277,8 @@ int main(){
else
{
cout << "debug: specialcar=true, capitialized=flase" << endl;
if (passwardlength % 2 == 0){
if (passwardlength % 2 == 0)
{
char cch;
string ch;
for (int i = 1; i <= passwardlength / 2; ++i)
Expand All @@ -245,7 +293,8 @@ int main(){
cout << endl
<< "Debug:EOF=1" << endl;
}
else{
else
{
char cch;
string ch;
passwardlength = passwardlength - 1;
Expand All @@ -265,11 +314,13 @@ int main(){
}
}
}
else{
else
{
if (capitalized_int == 1)
{
cout << "debug: specialcar=flase, capitialized=true" << endl;
if (passwardlength % 2 == 0){
if (passwardlength % 2 == 0)
{
char cch;
string ch;
for (int i = 1; i <= passwardlength / 2; ++i)
Expand All @@ -284,7 +335,8 @@ int main(){
cout << endl
<< "Debug:EOF=1" << endl;
}
else{
else
{
char cch;
string ch;
passwardlength = passwardlength - 1;
Expand All @@ -303,7 +355,8 @@ int main(){
<< "Debug:EOF=1" << endl;
}
}
else{
else
{
cout << "debug: specialcar=flase, capitialized=false" << endl;
char cch;
string ch;
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