curlx.c
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上传日期:2018-10-23
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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 argsn",
- " -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_callbackn");
- 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: %sn", 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: %sn", accessinfo);
- curl_easy_setopt(p->curl, CURLOPT_URL,accessinfo);
- }
- }
- if (p->verbose > 2)
- BIO_printf(p->errorbio,"leaving ssl_app_verify_callback with %dn", 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 problemn"); goto err;
- }
- if (!SSL_CTX_use_PrivateKey(ctx,p->pkey)) {
- BIO_printf(p->errorbio, "SSL_CTX_use_PrivateKeyn"); goto err;
- }
- if (!SSL_CTX_check_private_key(ctx)) {
- BIO_printf(p->errorbio, "SSL_CTX_check_private_keyn"); 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(ctx->cert_store,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,"%sn",*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 bion");
- 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 %sn", 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 %sn", 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 libn");
- goto err;
- }
- if (!(p12bio = BIO_new_file(p.p12file , "rb"))) {
- BIO_printf(p.errorbio, "Error opening P12 file %sn", p.p12file); goto err;
- }
- if (!(p.p12 = d2i_PKCS12_bio (p12bio, NULL))) {
- BIO_printf(p.errorbio, "Cannot decode P12 structure %sn", 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 %sn", p.p12file); goto err;
- }
- if (sk_X509_num(p.ca) <= 0) {
- BIO_printf(p.errorbio,"No trustworthy CA given.%sn", 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 certificatsn");
- 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_FILE,outfp);
- }
- res = curl_easy_setopt(p.curl, CURLOPT_SSL_CTX_FUNCTION, sslctxfun) ;
- if (res != CURLE_OK)
- BIO_printf(p.errorbio,"%d %s=%d %dn", __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 %dn", __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 : %sn",
- response);
- else
- BIO_printf(p.errorbio,"the reponse doesn't has an acceptable "
- "mime type, it is %s instead of %sn",
- 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);
- }