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gSOAP HTTP Content-MD5 digest plugin example application.

gSOAP XML Web services tools
Copyright (C) 2000-2004, Robert van Engelen, Genivia, Inc., All Rights Reserved.

gSOAP public license.

The contents of this file are subject to the gSOAP Public License Version 1.3
(the "License"); you may not use this file except in compliance with the
License. You may obtain a copy of the License at
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
for the specific language governing rights and limitations under the License.

The Initial Developer of the Original Code is Robert A. van Engelen.
Copyright (C) 2000-2004, Robert van Engelen, Genivia, Inc., All Rights Reserved.
GPL license.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later

This program 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 a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA

Author contact information:
engelen@genivia.com / engelen@acm.org

Requires OpenSSL


soapcpp2 -c httpmd5test.h
cc -DWITH_OPENSSL -o httpmd5test httpmd5test.c soapC.c soapClient.c soapServer.c httpmd5.c stdsoap2.c -lssl -lcrypto -lz


#include "httpmd5.h"
#include "soapH.h"
#include "ns.nsmap"

static int http_md5_handler(struct soap *soap, void **context, enum http_md5_action, char *buf, size_t len);

int main(int argc, char **argv)
{ struct soap soap;
  struct ns__echoString r;
  soap_register_plugin_arg(&soap, http_md5, http_md5_handler);
  if (argc < 2)
  else if (soap_call_ns__echoString(&soap, "http://", NULL, argv[1], &r))
    soap_print_fault(&soap, stderr);
  return 0;

int ns__echoString(struct soap *soap, char *arg, struct ns__echoString *response)
{ response->arg = arg;
  return SOAP_OK;

static int http_md5_handler(struct soap *soap, void **context, enum http_md5_action action, char *buf, size_t len)
{ const EVP_MD *m;
  EVP_MD_CTX *ctx;
  unsigned char hash[EVP_MAX_MD_SIZE];
  unsigned int size;
  switch (action)
  { case HTTP_MD5_INIT:
      if (!(m = EVP_get_digestbyname("md5")))
        return SOAP_PLUGIN_ERROR;
      if (!*context)
        *context = (void*)malloc(sizeof(EVP_MD_CTX));
      ctx = (EVP_MD_CTX*)*context;
#ifdef DEBUG
      fprintf(stderr, "MD5 Init %p\n", ctx);
      EVP_DigestInit(ctx, m);
    case HTTP_MD5_UPDATE:
      ctx = (EVP_MD_CTX*)*context;
#ifdef DEBUG
      fprintf(stderr, "MD5 Update %p: ", ctx);
      fwrite(buf, len, 1, stderr);
      fprintf(stderr, "\n");
      EVP_DigestUpdate(ctx, (void*)buf, (unsigned int)len);
    case HTTP_MD5_FINAL:
      ctx = (EVP_MD_CTX*)*context;
#ifdef DEBUG
      fprintf(stderr, "MD5 Final %p\n", ctx);
      EVP_DigestFinal(ctx, (void*)hash, &size);
      memcpy(buf, hash, 16);
    case HTTP_MD5_DELETE:
      ctx = (EVP_MD_CTX*)*context;
#ifdef DEBUG
      fprintf(stderr, "MD5 Delete %p\n", ctx);
  return SOAP_OK;

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