From 24836d30f516976b5f11a7e5a34a14cbbf67eb66 Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Fri, 3 Oct 2003 13:46:27 +0000 Subject: Peter Sylvester's curlx.c code example added --- docs/examples/Makefile.am | 2 +- docs/examples/curlx.c | 480 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 481 insertions(+), 1 deletion(-) create mode 100644 docs/examples/curlx.c (limited to 'docs/examples') diff --git a/docs/examples/Makefile.am b/docs/examples/Makefile.am index c21d00bdf..69d9dff33 100644 --- a/docs/examples/Makefile.am +++ b/docs/examples/Makefile.am @@ -9,7 +9,7 @@ EXTRA_DIST = README curlgtk.c sepheaders.c simple.c postit2.c \ multithread.c getinmemory.c ftpupload.c httpput.c \ simplessl.c ftpgetresp.c http-post.c post-callback.c \ multi-app.c multi-double.c multi-single.c multi-post.c \ - fopen.c simplepost.c makefile.dj + fopen.c simplepost.c makefile.dj curlx.c all: @echo "done" diff --git a/docs/examples/curlx.c b/docs/examples/curlx.c new file mode 100644 index 000000000..c5aabd344 --- /dev/null +++ b/docs/examples/curlx.c @@ -0,0 +1,480 @@ +/* + 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static 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.openevidenve.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 + +*/ + +/* 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(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,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; + char** pp; + unsigned char* hostporturl = NULL; + binaryptr=(char*)malloc(tabLength); + BIO * p12bio ; + char **args = argv + 1; + unsigned char * serverurl; + sslctxparm p; + char *response; + p.verbose = 0; + + CURLcode res; + struct curl_slist * headers=NULL; + + 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(); + + + int badarg=0; + + 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=(char*) 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))) { + BIO_printf(p.errorbio,"no service URL in user cert cherching in others certificats\n"); + int j=0; + int find=0; + for (j=0;j\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,tabLength); + + /* pass our list of custom made headers */ + + contenttype=(char*) 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 %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=(char*)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,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); +} + + + + -- cgit v1.2.3