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+/*
+ curlx.c Authors: Peter Sylvester, Jean-Paul Merlin
+
+ This is a little program to demonstrate the usage of
+
+ - an ssl initialisation callback setting a user key and trustbases
+ coming from a pkcs12 file
+ - using an ssl application callback to find a URI in the
+ certificate presented during ssl session establishment.
+
+*/
+
+
+/*
+ * Copyright (c) 2003 The OpenEvidence Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, the following disclaimer,
+ * and the original OpenSSL and SSLeay Licences below.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions, the following disclaimer
+ * and the original OpenSSL and SSLeay Licences below in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgments:
+ * "This product includes software developed by the Openevidence Project
+ * for use in the OpenEvidence Toolkit. (http://www.openevidence.org/)"
+ * This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com)."
+ *
+ * 4. The names "OpenEvidence Toolkit" and "OpenEvidence Project" must not be
+ * used to endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * openevidence-core@openevidence.org.
+ *
+ * 5. Products derived from this software may not be called "OpenEvidence"
+ * nor may "OpenEvidence" appear in their names without prior written
+ * permission of the OpenEvidence Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgments:
+ * "This product includes software developed by the OpenEvidence Project
+ * for use in the OpenEvidence Toolkit (http://www.openevidence.org/)
+ * This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com)."
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenEvidence PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenEvidence PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <curl/curl.h>
+#include <openssl/x509v3.h>
+#include <openssl/x509_vfy.h>
+#include <openssl/crypto.h>
+#include <openssl/lhash.h>
+#include <openssl/objects.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+#include <openssl/pkcs12.h>
+#include <openssl/bio.h>
+#include <openssl/ssl.h>
+
+static const char *curlx_usage[]={
+ "usage: curlx args\n",
+ " -p12 arg - tia file ",
+ " -envpass arg - environement variable which content the tia private key password",
+ " -out arg - output file (response)- default stdout",
+ " -in arg - input file (request)- default stdin",
+ " -connect arg - URL of the server for the connection ex: www.openevidence.org",
+ " -mimetype arg - MIME type for data in ex : application/timestamp-query or application/dvcs -default application/timestamp-query",
+ " -acceptmime arg - MIME type acceptable for the response ex : application/timestamp-response or application/dvcs -default none",
+ " -accesstype arg - an Object identifier in an AIA/SIA method, e.g. AD_DVCS or ad_timestamping",
+ NULL
+};
+
+/*
+
+./curlx -p12 psy.p12 -envpass XX -in request -verbose -accesstype AD_DVCS
+-mimetype application/dvcs -acceptmime application/dvcs -out response
+
+*/
+
+/*
+ * We use this ZERO_NULL to avoid picky compiler warnings,
+ * when assigning a NULL pointer to a function pointer var.
+ */
+
+#define ZERO_NULL 0
+
+/* This is a context that we pass to all callbacks */
+
+typedef struct sslctxparm_st {
+ unsigned char * p12file ;
+ const char * pst ;
+ PKCS12 * p12 ;
+ EVP_PKEY * pkey ;
+ X509 * usercert ;
+ STACK_OF(X509) * ca ;
+ CURL * curl;
+ BIO * errorbio;
+ int accesstype ;
+ int verbose;
+
+} sslctxparm;
+
+/* some helper function. */
+
+static char *i2s_ASN1_IA5STRING( ASN1_IA5STRING *ia5)
+{
+ char *tmp;
+ if(!ia5 || !ia5->length)
+ return NULL;
+ tmp = OPENSSL_malloc(ia5->length + 1);
+ memcpy(tmp, ia5->data, ia5->length);
+ tmp[ia5->length] = 0;
+ return tmp;
+}
+
+/* A conveniance routine to get an access URI. */
+
+static unsigned char *my_get_ext(X509 * cert, const int type, int extensiontype) {
+
+ int i;
+ STACK_OF(ACCESS_DESCRIPTION) * accessinfo ;
+ accessinfo = X509_get_ext_d2i(cert, extensiontype, NULL, NULL) ;
+
+ if (!sk_ACCESS_DESCRIPTION_num(accessinfo))
+ return NULL;
+ for (i = 0; i < sk_ACCESS_DESCRIPTION_num(accessinfo); i++) {
+ ACCESS_DESCRIPTION * ad = sk_ACCESS_DESCRIPTION_value(accessinfo, i);
+ if (OBJ_obj2nid(ad->method) == type) {
+ if (ad->location->type == GEN_URI) {
+ return i2s_ASN1_IA5STRING(ad->location->d.ia5);
+ }
+ return NULL;
+ }
+ }
+ return NULL;
+}
+
+/* This is an application verification call back, it does not
+ perform any addition verification but tries to find a URL
+ in the presented certificat. If found, this will become
+ the URL to be used in the POST.
+*/
+
+static int ssl_app_verify_callback(X509_STORE_CTX *ctx, void *arg)
+{
+ sslctxparm * p = (sslctxparm *) arg;
+ int ok;
+
+ if (p->verbose > 2)
+ BIO_printf(p->errorbio,"entering ssl_app_verify_callback\n");
+
+ if ((ok= X509_verify_cert(ctx)) && ctx->cert) {
+ unsigned char * accessinfo ;
+ if (p->verbose > 1)
+ X509_print_ex(p->errorbio,ctx->cert,0,0);
+
+ if (accessinfo = my_get_ext(ctx->cert,p->accesstype ,NID_sinfo_access)) {
+ if (p->verbose)
+ BIO_printf(p->errorbio,"Setting URL from SIA to: %s\n", accessinfo);
+
+ curl_easy_setopt(p->curl, CURLOPT_URL,accessinfo);
+ }
+ else if (accessinfo = my_get_ext(ctx->cert,p->accesstype,
+ NID_info_access)) {
+ if (p->verbose)
+ BIO_printf(p->errorbio,"Setting URL from AIA to: %s\n", accessinfo);
+
+ curl_easy_setopt(p->curl, CURLOPT_URL,accessinfo);
+ }
+ }
+ if (p->verbose > 2)
+ BIO_printf(p->errorbio,"leaving ssl_app_verify_callback with %d\n", ok);
+ return(ok);
+}
+
+
+/* This is an example of an curl SSL initialisation call back. The callback sets:
+ - a private key and certificate
+ - a trusted ca certificate
+ - a preferred cipherlist
+ - an application verification callback (the function above)
+*/
+
+static CURLcode sslctxfun(CURL * curl, void * sslctx, void * parm) {
+
+ sslctxparm * p = (sslctxparm *) parm;
+ SSL_CTX * ctx = (SSL_CTX *) sslctx ;
+
+ if (!SSL_CTX_use_certificate(ctx,p->usercert)) {
+ BIO_printf(p->errorbio, "SSL_CTX_use_certificate problem\n"); goto err;
+ }
+ if (!SSL_CTX_use_PrivateKey(ctx,p->pkey)) {
+ BIO_printf(p->errorbio, "SSL_CTX_use_PrivateKey\n"); goto err;
+ }
+
+ if (!SSL_CTX_check_private_key(ctx)) {
+ BIO_printf(p->errorbio, "SSL_CTX_check_private_key\n"); goto err;
+ }
+
+ SSL_CTX_set_quiet_shutdown(ctx,1);
+ SSL_CTX_set_cipher_list(ctx,"RC4-MD5");
+ SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
+
+ X509_STORE_add_cert(SSL_CTX_get_cert_store(ctx), sk_X509_value(p->ca, sk_X509_num(p->ca)-1));
+
+ SSL_CTX_set_verify_depth(ctx,2);
+
+ SSL_CTX_set_verify(ctx,SSL_VERIFY_PEER,ZERO_NULL);
+
+ SSL_CTX_set_cert_verify_callback(ctx, ssl_app_verify_callback, parm);
+
+
+ return CURLE_OK ;
+ err:
+ ERR_print_errors(p->errorbio);
+ return CURLE_SSL_CERTPROBLEM;
+
+}
+
+int main(int argc, char **argv) {
+
+ BIO* in=NULL;
+ BIO* out=NULL;
+
+ char * outfile = NULL;
+ char * infile = NULL ;
+
+ int tabLength=100;
+ char *binaryptr;
+ char* mimetype;
+ char* mimetypeaccept=NULL;
+ char* contenttype;
+ const char** pp;
+ unsigned char* hostporturl = NULL;
+ BIO * p12bio ;
+ char **args = argv + 1;
+ unsigned char * serverurl;
+ sslctxparm p;
+ char *response;
+
+ CURLcode res;
+ struct curl_slist * headers=NULL;
+ int badarg=0;
+
+ binaryptr = malloc(tabLength);
+
+ p.verbose = 0;
+ p.errorbio = BIO_new_fp (stderr, BIO_NOCLOSE);
+
+ curl_global_init(CURL_GLOBAL_DEFAULT);
+
+ /* we need some more for the P12 decoding */
+
+ OpenSSL_add_all_ciphers();
+ OpenSSL_add_all_digests();
+ ERR_load_crypto_strings();
+
+
+
+ while (*args && *args[0] == '-') {
+ if (!strcmp (*args, "-in")) {
+ if (args[1]) {
+ infile=*(++args);
+ } else badarg=1;
+ } else if (!strcmp (*args, "-out")) {
+ if (args[1]) {
+ outfile=*(++args);
+ } else badarg=1;
+ } else if (!strcmp (*args, "-p12")) {
+ if (args[1]) {
+ p.p12file = *(++args);
+ } else badarg=1;
+ } else if (strcmp(*args,"-envpass") == 0) {
+ if (args[1]) {
+ p.pst = getenv(*(++args));
+ } else badarg=1;
+ } else if (strcmp(*args,"-connect") == 0) {
+ if (args[1]) {
+ hostporturl = *(++args);
+ } else badarg=1;
+ } else if (strcmp(*args,"-mimetype") == 0) {
+ if (args[1]) {
+ mimetype = *(++args);
+ } else badarg=1;
+ } else if (strcmp(*args,"-acceptmime") == 0) {
+ if (args[1]) {
+ mimetypeaccept = *(++args);
+ } else badarg=1;
+ } else if (strcmp(*args,"-accesstype") == 0) {
+ if (args[1]) {
+ if ((p.accesstype = OBJ_obj2nid(OBJ_txt2obj(*++args,0))) == 0) badarg=1;
+ } else badarg=1;
+ } else if (strcmp(*args,"-verbose") == 0) {
+ p.verbose++;
+ } else badarg=1;
+ args++;
+ }
+
+ if (mimetype==NULL || mimetypeaccept == NULL) badarg = 1;
+
+ if (badarg) {
+ for (pp=curlx_usage; (*pp != NULL); pp++)
+ BIO_printf(p.errorbio,"%s\n",*pp);
+ BIO_printf(p.errorbio,"\n");
+ goto err;
+ }
+
+
+
+ /* set input */
+
+ if ((in=BIO_new(BIO_s_file())) == NULL) {
+ BIO_printf(p.errorbio, "Error setting input bio\n");
+ goto err;
+ } else if (infile == NULL)
+ BIO_set_fp(in,stdin,BIO_NOCLOSE|BIO_FP_TEXT);
+ else if (BIO_read_filename(in,infile) <= 0) {
+ BIO_printf(p.errorbio, "Error opening input file %s\n", infile);
+ BIO_free(in);
+ goto err;
+ }
+
+ /* set output */
+
+ if ((out=BIO_new(BIO_s_file())) == NULL) {
+ BIO_printf(p.errorbio, "Error setting output bio.\n");
+ goto err;
+ } else if (outfile == NULL)
+ BIO_set_fp(out,stdout,BIO_NOCLOSE|BIO_FP_TEXT);
+ else if (BIO_write_filename(out,outfile) <= 0) {
+ BIO_printf(p.errorbio, "Error opening output file %s\n", outfile);
+ BIO_free(out);
+ goto err;
+ }
+
+
+ p.errorbio = BIO_new_fp (stderr, BIO_NOCLOSE);
+
+ if (!(p.curl = curl_easy_init())) {
+ BIO_printf(p.errorbio, "Cannot init curl lib\n");
+ goto err;
+ }
+
+
+
+ if (!(p12bio = BIO_new_file(p.p12file , "rb"))) {
+ BIO_printf(p.errorbio, "Error opening P12 file %s\n", p.p12file); goto err;
+ }
+ if (!(p.p12 = d2i_PKCS12_bio (p12bio, NULL))) {
+ BIO_printf(p.errorbio, "Cannot decode P12 structure %s\n", p.p12file); goto err;
+ }
+
+ p.ca= NULL;
+ if (!(PKCS12_parse (p.p12, p.pst, &(p.pkey), &(p.usercert), &(p.ca) ) )) {
+ BIO_printf(p.errorbio,"Invalid P12 structure in %s\n", p.p12file); goto err;
+ }
+
+ if (sk_X509_num(p.ca) <= 0) {
+ BIO_printf(p.errorbio,"No trustworthy CA given.%s\n", p.p12file); goto err;
+ }
+
+ if (p.verbose > 1)
+ X509_print_ex(p.errorbio,p.usercert,0,0);
+
+ /* determine URL to go */
+
+ if (hostporturl) {
+ serverurl = malloc(9+strlen(hostporturl));
+ sprintf(serverurl,"https://%s",hostporturl);
+ }
+ else if (p.accesstype != 0) { /* see whether we can find an AIA or SIA for a given access type */
+ if (!(serverurl = my_get_ext(p.usercert,p.accesstype,NID_info_access))) {
+ int j=0;
+ BIO_printf(p.errorbio,"no service URL in user cert "
+ "cherching in others certificats\n");
+ for (j=0;j<sk_X509_num(p.ca);j++) {
+ if ((serverurl = my_get_ext(sk_X509_value(p.ca,j),p.accesstype,
+ NID_info_access)))
+ break;
+ if ((serverurl = my_get_ext(sk_X509_value(p.ca,j),p.accesstype,
+ NID_sinfo_access)))
+ break;
+ }
+ }
+ }
+
+ if (!serverurl) {
+ BIO_printf(p.errorbio, "no service URL in certificats,"
+ " check '-accesstype (AD_DVCS | ad_timestamping)'"
+ " or use '-connect'\n");
+ goto err;
+ }
+
+ if (p.verbose)
+ BIO_printf(p.errorbio, "Service URL: <%s>\n", serverurl);
+
+ curl_easy_setopt(p.curl, CURLOPT_URL, serverurl);
+
+ /* Now specify the POST binary data */
+
+ curl_easy_setopt(p.curl, CURLOPT_POSTFIELDS, binaryptr);
+ curl_easy_setopt(p.curl, CURLOPT_POSTFIELDSIZE,(long)tabLength);
+
+ /* pass our list of custom made headers */
+
+ contenttype = malloc(15+strlen(mimetype));
+ sprintf(contenttype,"Content-type: %s",mimetype);
+ headers = curl_slist_append(headers,contenttype);
+ curl_easy_setopt(p.curl, CURLOPT_HTTPHEADER, headers);
+
+ if (p.verbose)
+ BIO_printf(p.errorbio, "Service URL: <%s>\n", serverurl);
+
+ {
+ FILE *outfp;
+ BIO_get_fp(out,&outfp);
+ curl_easy_setopt(p.curl, CURLOPT_WRITEDATA, outfp);
+ }
+
+ res = curl_easy_setopt(p.curl, CURLOPT_SSL_CTX_FUNCTION, sslctxfun) ;
+
+ if (res != CURLE_OK)
+ BIO_printf(p.errorbio,"%d %s=%d %d\n", __LINE__, "CURLOPT_SSL_CTX_FUNCTION",CURLOPT_SSL_CTX_FUNCTION,res);
+
+ curl_easy_setopt(p.curl, CURLOPT_SSL_CTX_DATA, &p);
+
+ {
+ int lu; int i=0;
+ while ((lu = BIO_read (in,&binaryptr[i],tabLength-i)) >0 ) {
+ i+=lu;
+ if (i== tabLength) {
+ tabLength+=100;
+ binaryptr=realloc(binaryptr,tabLength); /* should be more careful */
+ }
+ }
+ tabLength = i;
+ }
+ /* Now specify the POST binary data */
+
+ curl_easy_setopt(p.curl, CURLOPT_POSTFIELDS, binaryptr);
+ curl_easy_setopt(p.curl, CURLOPT_POSTFIELDSIZE,(long)tabLength);
+
+
+ /* Perform the request, res will get the return code */
+
+ BIO_printf(p.errorbio,"%d %s %d\n", __LINE__, "curl_easy_perform",
+ res = curl_easy_perform(p.curl));
+ {
+ int result =curl_easy_getinfo(p.curl,CURLINFO_CONTENT_TYPE,&response);
+ if( mimetypeaccept && p.verbose)
+ if(!strcmp(mimetypeaccept,response))
+ BIO_printf(p.errorbio,"the response has a correct mimetype : %s\n",
+ response);
+ else
+ BIO_printf(p.errorbio,"the reponse doesn\'t has an acceptable "
+ "mime type, it is %s instead of %s\n",
+ response,mimetypeaccept);
+ }
+
+ /*** code d'erreur si accept mime ***, egalement code return HTTP != 200 ***/
+
+/* free the header list*/
+
+ curl_slist_free_all(headers);
+
+ /* always cleanup */
+ curl_easy_cleanup(p.curl);
+
+ BIO_free(in);
+ BIO_free(out);
+ return (EXIT_SUCCESS);
+
+ err: BIO_printf(p.errorbio,"error");
+ exit(1);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 01:43:23 +0000