twitter_oauthtest2.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <oauth.h>

/*
* a example requesting and parsing a request-token from an OAuth service-provider
* using OAuth HTTP Authorization header:
* see http://oauth.net/core/1.0a/#auth_header * and http://oauth.net/core/1.0a/#consumer_req_param */
void request_token_example_get(void) {
#if 0
const char *request_token_uri = "http://localhost/oauthtest.php?test=test";
const char *req_c_key = "17b09ea4c9a4121145936f0d7d8daa28047583796"; //< consumer key
const char *req_c_secret = "942295b08ffce77b399419ee96ac65be"; //< consumer secret
#else
const char *request_token_uri = "http://term.ie/oauth/example/request_token.php";
const char *req_c_key = "key"; //< consumer key
const char *req_c_secret = "secret"; //< consumer secret
#endif
char *res_t_key = NULL; //< replied key
char *res_t_secret = NULL; //< replied secret

char *req_url = NULL;
char *req_hdr = NULL;
char *http_hdr= NULL;
char *reply;

//req_url = oauth_sign_url2(request_token_uri, NULL, OA_HMAC, NULL, req_c_key, req_c_secret, NULL, NULL);

// oauth_sign_url2 (see oauth.h) in steps
int argc;
char **argv = NULL;

argc = oauth_split_url_parameters(request_token_uri, &argv);

oauth_sign_array2_process(&argc, &argv,
NULL, //< postargs (unused)
OA_HMAC,
NULL, //< HTTP method (defaults to "GET")
req_c_key, req_c_secret, NULL, NULL);

// 'default' oauth_sign_url2 would do:
// req_url = oauth_serialize_url(argc, 0, argv);

// we split [x_]oauth_ parameters (for use in HTTP Authorization header)
req_hdr = oauth_serialize_url_sep(argc, 1, argv, ", ", 6);
// and other URL parameters
req_url = oauth_serialize_url_sep(argc, 0, argv, "&", 1);

oauth_free_array(&argc, &argv);

// done with OAuth stuff, now perform the HTTP request.
http_hdr = malloc(strlen(req_hdr) + 55);

// Note that (optional) 'realm' is not to be
// included in the oauth signed parameters and thus only added here.
// see 9.1.1 in http://oauth.net/core/1.0/#anchor14 sprintf(http_hdr, "Authorization: OAuth realm=/"http://example.org//", %s", req_hdr);

printf("request URL=%s/n", req_url);
printf("request header=%s/n/n", http_hdr);
reply = oauth_http_get2(req_url,NULL, http_hdr);
if (!reply)
printf("HTTP request for an oauth request-token failed./n");
else {
// parse reply - example:
//"oauth_token=2a71d1c73d2771b00f13ca0acb9836a10477d3c56&oauth_token_secret=a1b5c00c1f3e23fb314a0aa22e990266"
int rc;
char **rv = NULL;

printf("HTTP-reply: %s/n", reply);
rc = oauth_split_url_parameters(reply, &rv);
qsort(rv, rc, sizeof(char *), oauth_cmpstringp);
if( rc==2
&& !strncmp(rv[0],"oauth_token=",11)
&& !strncmp(rv[1],"oauth_token_secret=",18) ){
res_t_key=strdup(&(rv[0][12]));
res_t_secret=strdup(&(rv[1][19]));
printf("key: '%s'/nsecret: '%s'/n",res_t_key, res_t_secret);
}
if(rv) free(rv);
}

if(req_url) free(req_url);
if(req_hdr) free(req_hdr);
if(http_hdr)free(http_hdr);
if(reply) free(reply);
if(res_t_key) free(res_t_key);
if(res_t_secret) free(res_t_secret);
}

/*
* Main Test and Example Code.
*/
int main (int argc, char **argv) {
request_token_example_get();
return (0);
}