src/ssl/crtd_message.cc

   1 /*
   2  * $Id$
   3  */
   4
   5 #include "config.h"
   6 #include "ssl/gadgets.h"
   7 #include "ssl/crtd_message.h"
   8 #if HAVE_CSTDLIB
   9 #include <cstdlib>
  10 #endif
  11 #if HAVE_CSTRING
  12 #include <cstring>
  13 #endif
  14
  15 Ssl::CrtdMessage::CrtdMessage()
  16         :   body_size(0), state(BEFORE_CODE)
  17 {}
  18
  19 Ssl::CrtdMessage::ParseResult Ssl::CrtdMessage::parse(const char * buffer, size_t len)
  20 {
  21     char const *current_pos = buffer;
  22     while (current_pos != buffer + len && state != END) {
  23         switch (state) {
  24         case BEFORE_CODE: {
  25             if (xisspace(*current_pos)) {
  26                 current_pos++;
  27                 break;
  28             }
  29             if (xisalpha(*current_pos)) {
  30                 state = CODE;
  31                 break;
  32             }
  33             clear();
  34             return ERROR;
  35         }
  36         case CODE: {
  37             if (xisalnum(*current_pos) || *current_pos == '_') {
  38                 current_block += *current_pos;
  39                 current_pos++;
  40                 break;
  41             }
  42             if (xisspace(*current_pos)) {
  43                 code = current_block;
  44                 current_block.clear();
  45                 state = BEFORE_LENGTH;
  46                 break;
  47             }
  48             clear();
  49             return ERROR;
  50         }
  51         case BEFORE_LENGTH: {
  52             if (xisspace(*current_pos)) {
  53                 current_pos++;
  54                 break;
  55             }
  56             if (xisdigit(*current_pos)) {
  57                 state = LENGTH;
  58                 break;
  59             }
  60             clear();
  61             return ERROR;
  62         }
  63         case LENGTH: {
  64             if (xisdigit(*current_pos)) {
  65                 current_block += *current_pos;
  66                 current_pos++;
  67                 break;
  68             }
  69             if (xisspace(*current_pos)) {
  70                 body_size = atoi(current_block.c_str());
  71                 current_block.clear();
  72                 state = BEFORE_BODY;
  73                 break;
  74             }
  75             clear();
  76             return ERROR;
  77         }
  78         case BEFORE_BODY: {
  79             if (body_size == 0) {
  80                 state = END;
  81                 break;
  82             }
  83             if (xisspace(*current_pos)) {
  84                 current_pos++;
  85                 break;
  86             } else {
  87                 state = BODY;
  88                 break;
  89             }
  90         }
  91         case BODY: {
  92             size_t body_len = (static_cast<size_t>(buffer + len - current_pos) >= body_size - current_block.length())
  93                               ? body_size - current_block.length()
  94                               : static_cast<size_t>(buffer + len - current_pos);
  95             current_block += std::string(current_pos, body_len);
  96             current_pos += body_len;
  97             if (current_block.length() == body_size) {
  98                 body = current_block;
  99                 state = END;
 100             }
 101             if (current_block.length() > body_size) {
 102                 clear();
 103                 return ERROR;
 104             }
 105             break;
 106         }
 107         case END: {
 108             return OK;
 109         }
 110         }
 111     }
 112     if (state != END) return INCOMPLETE;
 113     return OK;
 114 }
 115
 116 std::string const & Ssl::CrtdMessage::getBody() const { return body; }
 117
 118 std::string const & Ssl::CrtdMessage::getCode() const { return code; }
 119
 120 void Ssl::CrtdMessage::setBody(std::string const & aBody) { body = aBody; }
 121
 122 void Ssl::CrtdMessage::setCode(std::string const & aCode) { code = aCode; }
 123
 124
 125 std::string Ssl::CrtdMessage::compose() const
 126 {
 127     if (code.empty()) return std::string();
 128     char buffer[10];
 129     snprintf(buffer, sizeof(buffer), "%zd", body.length());
 130     return code + ' ' + buffer + ' ' + body;
 131 }
 132
 133 void Ssl::CrtdMessage::clear()
 134 {
 135     body_size = 0;
 136     state = BEFORE_CODE;
 137     body.clear();
 138     code.clear();
 139     current_block.clear();
 140 }
 141
 142 void Ssl::CrtdMessage::parseBody(CrtdMessage::BodyParams & map, std::string & other_part) const
 143 {
 144     other_part.clear();
 145     // Copy string for using it as temp buffer.
 146     std::string temp_body(body.c_str(), body.length());
 147     char * buffer = const_cast<char *>(temp_body.c_str());
 148     char * token = strtok(buffer, "\r\n");
 149     while (token != NULL) {
 150         std::string current_string(token);
 151         size_t equal_pos = current_string.find('=');
 152         if (equal_pos == std::string::npos) {
 153             size_t offset_body_part = token - temp_body.c_str();
 154             other_part = std::string(body.c_str() + offset_body_part, body.length() - offset_body_part);
 155             break;
 156         } else {
 157             std::string param(current_string.c_str(), current_string.c_str() + equal_pos);
 158             std::string value(current_string.c_str() + equal_pos + 1);
 159             map.insert(std::make_pair(param, value));
 160         }
 161         token = strtok(NULL, "\r\n");
 162     }
 163 }
 164
 165 void Ssl::CrtdMessage::composeBody(CrtdMessage::BodyParams const & map, std::string const & other_part)
 166 {
 167     body.clear();
 168     for (BodyParams::const_iterator i = map.begin(); i != map.end(); i++) {
 169         if (i != map.begin())
 170             body += "\n";
 171         body += i->first + "=" + i->second;
 172     }
 173     if (!other_part.empty())
 174         body += '\n' + other_part;
 175 }
 176
 177 const std::string Ssl::CrtdMessage::code_new_certificate("new_certificate");
 178 const std::string Ssl::CrtdMessage::param_host("host");
 179 const std::string Ssl::CrtdMessage::param_SetValidAfter(Ssl::CertAdaptAlgorithmStr[algSetValidAfter]);
 180 const std::string Ssl::CrtdMessage::param_SetValidBefore(Ssl::CertAdaptAlgorithmStr[algSetValidBefore]);
 181 const std::string Ssl::CrtdMessage::param_SetCommonName(Ssl::CertAdaptAlgorithmStr[algSetCommonName]);
 182 const std::string Ssl::CrtdMessage::param_Sign("Sign");