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/* 
 * $Id: make_csr.pike,v 1.9 1999/02/15 23:23:27 per Exp $ 
 */ 
 
inherit "wizard"; 
 
import Standards.PKCS; 
import Standards.ASN1.Encode; 
 
#if 0 
#define WERROR werror 
#else 
#define WERROR(x) 
#endif 
 
constant name = "Security//Generate a Certificate Signing Request and an RSA key..."; 
 
constant doc =  
("In order to use the SSL on your server, " 
 "you first have to create a random RSA key pair." 
 "One part of the key is kept secret. The " 
 "other part should be submitted to a certificate " 
 "authority, such as Thawte or VeriSign. The " 
 "certificate authority will return the signed " 
 "certificate that is needed to run a secure server."); 
 
#if !constant(_Crypto) || !constant(Crypto.rsa) 
 
constant action_disabled = 1; 
 
#else /* constant(_Crypto) && constant(Crypto.rsa) */ 
 
 
// Change this page to generate the key... 
mixed page_0(object id, object mc) 
{ 
  string msg; 
   
  if (id->variables->_error) 
  { 
    msg = "<font color=red>" + id->variables->_error 
      + "</font><p>"; 
    id->variables->_error = 0; 
  } 
   
  return (msg || "" ) 
    + ("<font size=+1>How large key do you want to generate?</font><p>" 
       "<b>Key size</b><br>" 
       "<var name=key_size type=int default=1031><br>\n" 
       "<blockquote>" 
       "The desired key size. This is a security parameter; larger " 
       "keys gives better security, but it also makes connecting to " 
       "the server a little slower.<p>" 
       "The largest RSA key that is publicly known to have been broken " 
       "was 130 decimal digits, or about 430 bits large. This " 
       "effort required 500 MIPS-years.<p>" 
       "A key 1000 bits large should be secure enough for most " 
       "applications, but of course you can you use an even larger key " 
       "if you so wish." 
       "</blockquote>" 
       "<b>Key file</b><br>" 
       "<var name=key_file type=string default=ssl3key><br>\n" 
       "<blockquote>" 
       "A filename in the real filesystem, where the secret key should " 
       "be stored." 
       "</blockquote>"); 
} 
 
mixed verify_0(object id, object mc) 
{ 
  int key_size = (int) id->variables->key_size; 
  if (key_size < 300) 
  { 
    id->variables->_error = 
      "Keys smaller than 300 bits are ridiculous."; 
    return 1; 
  } 
  if (key_size > 5000) 
  { 
    id->variables->_error = 
      "Keys larger than 5000 bits would take too long to generate."; 
    return 1; 
  } 
 
  object file = Stdio.File(); 
  object privs = Privs("Storing private RSA key."); 
  if (!file->open(id->variables->key_file, "wct", 0600)) 
  { 
    id->variables->_error = 
      "Could not open file: " 
      + (strerror(file->errno()) || (string) file->errno()) 
      + "."; 
    privs = 0; 
    return 1; 
  } 
 
  privs = 0; 
 
  object rsa = Crypto.rsa(); 
  rsa->generate_key(key_size, Crypto.randomness.reasonably_random()->read); 
 
  string key = Tools.PEM.simple_build_pem 
    ("RSA PRIVATE KEY", 
     Standards.PKCS.RSA.rsa_private_key(rsa)); 
  WERROR(key); 
   
  if (strlen(key) != file->write(key)) 
  { 
    id->variables->_error = 
      "Write failed: " 
      + (strerror(file->errno()) || (string) file->errno()) 
      + "."; 
    return 1; 
  } 
  destruct(file); 
 
  if (!file_stat(id->variables->key_file)) 
  { 
    id->variables->_error = "File not found."; 
    return 1; 
  } 
  return 0; 
} 
 
mixed page_1(mixed id, mixed mc) 
{ 
  return ("<font size=+1>Your Distinguished Name?</font><p>" 
          "<blockquote>" 
          "Your X.501 Distinguished Name consists of a chain of attributes " 
          "and values, where each link in the chain defines more precisely " 
          "who you are. Which attributes are necessary or useful " 
          "depends on what you will use the certificate for, and which " 
          "Certificate Authority you use. This page lets you specify " 
          "the most useful attributes. If you leave a field blank, " 
          "that attribute will be omitted from your name.<p>\n" 
          "Unfortunately, all fields should be in US-ASCII." 
          "</blockquote>" 
 
          "<b>Your country code</b><br>\n" 
          "<var name=countryName type=string default=SE><br>" 
          "<blockquote>" 
          "Your two-letter country code, for example GB (United Kingdom). " 
          "This attribute is required." 
          "</blockquote>" 
 
          "<b>State/Province</b><br>\n" 
          "<var name=stateOrProvinceName type=string><br>" 
          "<blockquote>" 
          "The state where you are operating. VeriSign requires this attribute " 
          "to be present for US and Canadian customers. Do not abbreviate." 
          "</blockquote>" 
 
          "<b>City/Locality</b><br>\n" 
          "<var name=localityName type=string default=Stockholm><br>" 
          "<blockquote>" 
          "The city or locality where you are registered. VeriSign " 
          "requires that at least one of the locality and the state " 
          "attributes are present. Do not abbreviate." 
          "</blockquote>" 
           
          "<b>Organization/Company</b><br>\n" 
          "<var name=organizationName type=string default=\"Idonex AB\"><br>" 
          "<blockquote>" 
          "The organization name under which you are registered with some " 
          "national or regional authority." 
          "</blockquote>" 
           
          "<b>Organizational unit</b><br>\n" 
          "<var name=organizationUnitName type=string " 
          "default=\"Roxen Development\"><br>" 
          "<blockquote>" 
          "This attribute is optional, and there are no " 
          "specific requirements on the value of this attribute." 
          "</blockquote>" 
 
          "<b>Common Name</b><br>\n" 
          "<var name=commonName type=string default=\"www.idonex.se\"><br>" 
          "This is the DNS name of your server (i.e. the host part of " 
          "the URL).\n" 
          "<blockquote>" 
          "Browsers will compare the URL they are connecting to with " 
          "the Common Name in the server's certificate, and warn the user " 
          "if they don't match.<p>" 
          "Some Certificate Authorities allow wild cards in the Common " 
          "Name. This means that you can have a certificate for " 
          "<tt>*.idonex.se</tt> which will match all servers at Idonex." 
          "Thawte allows wild card certificates, while VeriSign does not." 
          "</blockquote>"); 
} 
 
mixed page_2(object id, object mc) 
{ 
  return ("<font size=+1>Certificate Attributes?</font><p>" 
          "<blockquote>" 
          "An X.509 certificate associates a Common Name\n" 
          "with a public key. Some certificate authorities support\n" 
          "\"extended certificates\", defined in PKCS#10. An extended\n" 
          "certificate may contain other useful information associated\n" 
          "with the name and the key. This information is signed by the\n" 
          "CA, together with the X.509 certificate.\n" 
          "</blockquote>\n" 
 
          "<br><b>Email address</b><br><var name=emailAddress type=string>" 
          "<blockquote>" 
          "An email address to be embedded in the certificate." 
          "</blockquote>\n"); 
} 
 
mixed page_3(object id, object mc) 
{ 
  return ("<font size=+1>CSR Attributes?</font><p>" 
          "At last, you can add attributes to the Certificate Signing " 
          "Request, which are meant for the Certificate Authority " 
          "and are not included in the issued Certificate." 
 
          "<p><b>Challenge Password</b><br>" 
          "<var name=challengePassword type=password>" 
          "<blockquote>" 
          "This password could be used if you ever want to revoke " 
          "your certificate. Of course, this depends on the policy of " 
          "your Certificate Authority." 
          "</blockquote>\n"); 
} 
 
object trim = Regexp("^[ \t]*([^ \t](.*[^ \t]|))[ \t]*$"); 
 
mixed page_4(object id, object mc) 
{ 
  object file = Stdio.File(); 
 
  object privs = Privs("Reading private RSA key"); 
  if (!file->open(id->variables->key_file, "r")) 
  { 
    privs = 0; 
 
    return "<font color=red>Could not open key file: " 
      + strerror(file->errno()) + "\n</font>"; 
  } 
  privs = 0; 
  string s = file->read(0x10000); 
  if (!s) 
    return "<font color=red>Could not read private key: " 
      + strerror(file->errno()) + "\n</font>"; 
 
  object msg = Tools.PEM.pem_msg()->init(s); 
  object part = msg->parts["RSA PRIVATE KEY"]; 
   
  if (!part) 
    return "<font color=red>Key file not formatted properly.\n</font>"; 
 
  object rsa = RSA.parse_private_key(part->decoded_body()); 
 
  if (!rsa) 
    return "<font color=red>Invalid key.\n</font>"; 
   
  mapping attrs = ([]); 
  string attr; 
   
  /* Remove initial and trailing whitespace, and ignore 
   * empty attributes. */ 
  foreach( ({ "countryName", "stateOrProvinceName", "localityName", 
              "organizationName", "organizationUnitName", "commonName", 
              "emailAddress", "challengePassword"}), attr) 
  { 
    if (id->variables[attr]) 
      { 
        array a = trim->split(id->variables[attr]); 
        if (a) 
          attrs[attr] = a[0]; 
      } 
  } 
 
  array name = ({ }); 
  foreach( ({ "countryName", "stateOrProvinceName", 
              "localityName", "organizationName", 
              "organizationUnitName", "commonName" }), attr) 
  { 
    if (attrs[attr]) 
      name += ({ ([ attr : asn1_printable_string(attrs[attr]) ]) }); 
  } 
 
  mapping csr_attrs = ([]); 
  foreach( ({ "challengePassword" }), attr) 
  { 
    if (attrs[attr]) 
      csr_attrs[attr] = ({ asn1_printable_string(attrs[attr]) }); 
  } 
 
  mapping cert_attrs = ([ ]); 
  foreach( ({ "emailAddress" }), attr) 
  { 
    if (attrs[attr]) 
      cert_attrs[attr] = ({ asn1_IA5_string(attrs[attr]) }); 
  } 
 
  /* Not all CA:s support extendedCertificateAttributes */ 
  if (sizeof(cert_attrs)) 
    csr_attrs->extendedCertificateAttributes = 
      ({ Certificate.Attributes(Identifiers.attribute_ids, 
                                cert_attrs) }); 
   
  object csr = CSR.build_csr(rsa, 
                             Certificate.build_distinguished_name(@name), 
                             csr_attrs); 
 
  string re; 
  string res=("<font size=+2>This is your Certificate " 
              "Signing Request.</font><textarea name=csr cols=80 rows=12>"); 
 
  res += (re=Tools.PEM.simple_build_pem("CERTIFICATE REQUEST", csr->der())); 
   
  res += "</textarea>"; 
   
  res += "<p>"; 
   
  res += ("<p><font size=+1><var type=checkbox name=save></font>" 
          "<b>Save the request in a file:</b><br>" 
          "<blockquote><b>Filename</b><br><var type=string name=save_in_file></blockquote>"); 
 
 
  res += ("<p>" 
          "<p><font size=+1><var type=checkbox name=send></font>" 
          "<b>Send the request to Thawte</b><br>")   ; 
 
  return res; 
} 
 
 
#include "thawte.form"; 
mapping wizard_done( object id ) 
{ 
  if(id->variables->send[0]=='o') 
  { 
    return http_string_answer(sprintf(thawte_form, id->variables->csr)); 
  } 
} 
 
 
/* 
  https://www.thawte.com/cgi/server/step1.exe 
   
 */ 
 
mixed handle(object id) { return wizard_for(id,0); } 
 
#endif /* constant(_Crypto) && constant(Crypto.rsa) */