username=johndoe&password=password123

password123

void httpString(char **dest, char *input, const char *find) {
char *start;
char *o_input = input;
const char *o_find = find;
size_t length = 0;
size_t i = 0;
while (*input) {
    if (*input == '&' || input == o_input) {
        if (*input == '&') {
            input++;
            if (*input == 0) {
                return;
            }
        }
        while (*input == *find) {
            if (*input == 0 || *find == 0) {
                return;
            }
            input++;
            find++;
            if (*input == '=' && *find == 0) {
                input++;
                if (*input == 0) {
                    return;
                }
                start = input;
                while (*input != '&' && *input) {
                    input++;
                    length++;
                }
                *dest = malloc(length + 1);
                input = start;
                while (*input != '&' && *input) {
                    (*dest)[i] = *input;
                    input++;
                    i++;
                }
                (*dest)[i] = 0;
                return;
            }
        }
    }
    find = o_find;
    input++;
}
}