src/captcha.cc

   1 #include "icqconf.h"
   2 #include "icqface.h"
   3 #include "captcha.h"
   4
   5 captcha::captcha() {
   6 }
   7
   8 captcha::~captcha() {
   9         questions_t::iterator i;
  10
  11         for (i = questions.begin() ; i != questions.end() ; i++ ) {
  12                 delete *i;
  13         }
  14 }
  15
  16 bool captcha::docaptcha(imcontact c)
  17 {
  18         if (captchas.find(c) == captchas.end()) {
  19                 return false;
  20         } else {
  21                 captchas_t::iterator i;
  22                 captchaasked_t *ca;
  23                 set<string> *a;
  24                 i = captchas.find(c);
  25                 ca = &(i->second);
  26                 a = ca->answers;
  27                 return true;
  28         }
  29 }
  30
  31 void captcha::donecaptcha(imcontact c)
  32 {
  33         captchas.erase(c);
  34 }
  35
  36 bool captcha::checkcaptcha(imcontact c, string answer)
  37 {
  38         captchas_t::iterator i;
  39         captchaasked_t *ca;
  40
  41         i = captchas.find(c);
  42
  43         if (i != captchas.end()) {
  44                 ca = &(i->second);
  45                 if (ca->expiry < time(NULL)) {
  46                         captchas.erase(c);
  47                         return false;
  48                 } else {
  49                         return (ca->answers->find(lo(answer)) != ca->answers->end());
  50                 }
  51         }
  52         return false;
  53 }
  54
  55 string captcha::getcaptchaquestion(imcontact c) {
  56         question_t *t;
  57         captchaasked_t ca;
  58
  59         t = questions[(int)(questions.size() * (rand() / (RAND_MAX + 1.0)))];
  60         ca.answers = &t->answers;
  61         ca.expiry = conf.getcaptchatimeout() * 60 + time(NULL);
  62         captchas[c] = ca;
  63
  64         return t->question;
  65 }
  66
  67 void captcha::addquestion(string data) {
  68         question_t *q;
  69         string::size_type pos;
  70
  71
  72         pos = data.find("//");
  73         if (pos == string::npos) {
  74                 return;
  75         } else {
  76                 q = new question_t;
  77                 q->question = data.substr(0, pos);
  78                 data.erase(0, pos + 2);
  79
  80                 while (data.length()) {
  81                         pos = data.find("::");
  82                         if (pos == string::npos) {
  83                                 q->answers.insert(lo(data));
  84                                 data.erase();
  85                         } else if (pos == 0) {
  86                                 data.erase();
  87                         } else {
  88                                 q->answers.insert(lo(data.substr(0, pos)));
  89                                 data.erase(0, pos + 2);
  90                         }
  91                 }
  92
  93                 if (q->answers.empty()) {
  94                         delete q;
  95                 } else {
  96                         questions.push_back(q);
  97                 }
  98         }
  99 }
 100
 101 bool captcha::empty()
 102 {
 103         return questions.empty();
 104 }
 105
 106 unsigned int captcha::size()
 107 {
 108         return questions.size();
 109 }