src/ssl/crtd_message.cc

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