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41 results

pgp-encode.c

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    • Niels Möller's avatar
      c72c16b7
      Interface change, let all rsa signature functions have a return value. · c72c16b7
      Niels Möller authored
      Rev: nettle/ChangeLog:1.54
      Rev: nettle/NEWS:1.4
      Rev: nettle/examples/rsa-sign.c:1.2
      Rev: nettle/pgp-encode.c:1.3
      Rev: nettle/pkcs1-rsa-md5.c:1.3
      Rev: nettle/pkcs1-rsa-sha1.c:1.3
      Rev: nettle/pkcs1-rsa-sha256.c:1.3
      Rev: nettle/pkcs1-rsa-sha512.c:1.2
      Rev: nettle/pkcs1.c:1.3
      Rev: nettle/pkcs1.h:1.3
      Rev: nettle/rsa-compat.c:1.3
      Rev: nettle/rsa-md5-sign.c:1.3
      Rev: nettle/rsa-md5-verify.c:1.3
      Rev: nettle/rsa-sha1-sign.c:1.3
      Rev: nettle/rsa-sha1-verify.c:1.3
      Rev: nettle/rsa-sha256-sign.c:1.3
      Rev: nettle/rsa-sha256-verify.c:1.3
      Rev: nettle/rsa-sha512-sign.c:1.2
      Rev: nettle/rsa-sha512-verify.c:1.2
      Rev: nettle/rsa.h:1.4
      Rev: nettle/testsuite/cxx-test.cxx:1.3
      Rev: nettle/testsuite/pkcs1-test.c:1.3
      Rev: nettle/testsuite/testutils.c:1.5
      c72c16b7
      History
      Interface change, let all rsa signature functions have a return value.
      Niels Möller authored
      Rev: nettle/ChangeLog:1.54
      Rev: nettle/NEWS:1.4
      Rev: nettle/examples/rsa-sign.c:1.2
      Rev: nettle/pgp-encode.c:1.3
      Rev: nettle/pkcs1-rsa-md5.c:1.3
      Rev: nettle/pkcs1-rsa-sha1.c:1.3
      Rev: nettle/pkcs1-rsa-sha256.c:1.3
      Rev: nettle/pkcs1-rsa-sha512.c:1.2
      Rev: nettle/pkcs1.c:1.3
      Rev: nettle/pkcs1.h:1.3
      Rev: nettle/rsa-compat.c:1.3
      Rev: nettle/rsa-md5-sign.c:1.3
      Rev: nettle/rsa-md5-verify.c:1.3
      Rev: nettle/rsa-sha1-sign.c:1.3
      Rev: nettle/rsa-sha1-verify.c:1.3
      Rev: nettle/rsa-sha256-sign.c:1.3
      Rev: nettle/rsa-sha256-verify.c:1.3
      Rev: nettle/rsa-sha512-sign.c:1.2
      Rev: nettle/rsa-sha512-verify.c:1.2
      Rev: nettle/rsa.h:1.4
      Rev: nettle/testsuite/cxx-test.cxx:1.3
      Rev: nettle/testsuite/pkcs1-test.c:1.3
      Rev: nettle/testsuite/testutils.c:1.5
    parse.c 4.25 KiB
    /* parse.c
    
       Copyright (C) 2002, 2003, 2008 Niels Möller
    
       This file is part of GNU Nettle.
    
       GNU Nettle is free software: you can redistribute it and/or
       modify it under the terms of either:
    
         * the GNU Lesser General Public License as published by the Free
           Software Foundation; either version 3 of the License, or (at your
           option) any later version.
    
       or
    
         * the GNU General Public License as published by the Free
           Software Foundation; either version 2 of the License, or (at your
           option) any later version.
    
       or both in parallel, as here.
    
       GNU Nettle is distributed in the hope that it will be useful,
       but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       General Public License for more details.
    
       You should have received copies of the GNU General Public License and
       the GNU Lesser General Public License along with this program.  If
       not, see http://www.gnu.org/licenses/.
    */
    
    #if HAVE_CONFIG_H
    # include "config.h"
    #endif
    
    #include <assert.h>
    #include <stdlib.h>
    
    #include "parse.h"
    
    #include "input.h"
    
    void
    sexp_compound_token_init(struct sexp_compound_token *token)
    {
      token->type = 0;
      nettle_buffer_init(&token->display);
      nettle_buffer_init(&token->string);
    }
    
    void
    sexp_compound_token_clear(struct sexp_compound_token *token)
    {
      nettle_buffer_clear(&token->display);
      nettle_buffer_clear(&token->string);
    }
    
    void
    sexp_parse_init(struct sexp_parser *parser,
    		struct sexp_input *input,
    		enum sexp_mode mode)
    {
      parser->input = input;
      parser->mode = mode;
    
      /* Start counting with 1 for the top level, to make comparisons
       * between transport and level simpler.
       *
       * FIXME: Is that trick ugly? */
      parser->level = 1;
      parser->transport = 0;
    }
    
    /* Get next token, and check that it is of the expected kind. */
    static void
    sexp_check_token(struct sexp_parser *parser,
    		 enum sexp_token token,
    		 struct nettle_buffer *string)
    {
      sexp_get_token(parser->input,
    		 parser->transport ? SEXP_CANONICAL : parser->mode,
    		 string);
    
      if (parser->input->token != token)
        die("Syntax error.\n");
    }
    
    /* Performs further processing of the input, in particular display
     * types and transport decoding.
     *
     * This is complicated a little by the requirement that a
     * transport-encoded block, {xxxxx}, must include exactly one
     * expression. We check at the end of strings and list whether or not
     * we should expect a SEXP_CODING_END as the next token. */
    void
    sexp_parse(struct sexp_parser *parser,
    	   struct sexp_compound_token *token)
    {
      for (;;)
        {
          sexp_get_token(parser->input,
    		     parser->transport ? SEXP_CANONICAL : parser->mode,
    		     &token->string);
    
          switch(parser->input->token)
    	{
    	case SEXP_LIST_END:
    	  if (parser->level == parser->transport)
    	    die("Unmatched end of list in transport encoded data.\n");
    	  parser->level--;
    
    	  if (!parser->level)
    	    die("Unmatched end of list.\n");
    
    	  token->type = SEXP_LIST_END;
    
    	check_transport_end:
    	  if (parser->level == parser->transport)
    	    {
    	      sexp_check_token(parser, SEXP_CODING_END, &token->string);
    	      assert(parser->transport);
    	      assert(parser->level == parser->transport);
    
    	      parser->level--;
    	      parser->transport = 0;
    	    }
    	  return;
        
    	case SEXP_EOF:
    	  if (parser->level > 1)
    	    die("Unexpected end of file.\n");
    
    	  token->type = SEXP_EOF;
    	  return;
    
    	case SEXP_LIST_START:
    	  parser->level++;
    	  token->type = SEXP_LIST_START;
    	  return;
    
    	case SEXP_DISPLAY_START:
    	  sexp_check_token(parser, SEXP_STRING, &token->display);
    	  sexp_check_token(parser, SEXP_DISPLAY_END, &token->display);
    	  sexp_check_token(parser, SEXP_STRING, &token->string);
    
    	  token->type = SEXP_DISPLAY;
    	  goto check_transport_end;
    
    	case SEXP_STRING:
    	  token->type = SEXP_STRING;
    	  goto check_transport_end;
    
    	case SEXP_COMMENT:
    	  token->type = SEXP_COMMENT;
    	  return;
    
    	case SEXP_TRANSPORT_START:
    	  if (parser->mode == SEXP_CANONICAL)
    	    die("Base64 not allowed in canonical mode.\n");
    	  parser->level++;
    	  parser->transport = parser->level;
    
    	  continue;
    
    	case SEXP_CODING_END:
    	  die("Unexpected end of transport encoding.\n");
    	  
    	case SEXP_DISPLAY_END:
    	  die("Unexpected end of display tag.\n");
    
    	case SEXP_DISPLAY:
    	  /* Internal error. */
    	  abort();
    	}
        }
    }