psyced/world/net/http/oauth.c

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/*
current specification:
http://tools.ietf.org/html/draft-hammer-oauth-10
older ones:
http://oauth.net/core/1.0a/
http://oauth.net/core/1.0/
*/
#include <net.h>
#include <tls.h>
#include <ht/http.h>
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volatile string consumer_key;
volatile string consumer_secret;
volatile string request_token_url;
persistent mapping request_params = ([ ]);
persistent mapping access_params = ([ ]);
volatile string access_token_url;
volatile string authorize_url;
volatile string callback_url = HTTPS_OR_HTTP_URL + "/oauth";
volatile object user;
volatile int authorized = 0;
oauth_success() {}
oauth_error() {}
varargs void fetch(object ua, string url, string method, mapping post, mapping oauth) {
P3((">> oauth:fetch(%O, %O, %O)\n", url, method, oauth))
unless (method) method = "GET";
unless (post) post = ([]);
unless (oauth) oauth = ([]);
mapping get = ([]);
string qs, base_url = url;
if (sscanf(url, "%s?%s", base_url, qs))
url_parse_query(get, qs);
oauth["oauth_consumer_key"] = consumer_key;
string token;
if (token = access_params["oauth_token"] || request_params["oauth_token"])
oauth["oauth_token"] = token;
string token_secret = access_params["oauth_token_secret"] || request_params["oauth_token_secret"] || "";
oauth["oauth_timestamp"] = time();
oauth["oauth_nonce"] = sprintf("%x", random(oauth["oauth_timestamp"] ^ 98987));
oauth["oauth_signature_method"] = "HMAC-SHA1";
oauth["oauth_version"] = "1.0";
P3(("token: %O, token_secret: %O, access: %O, request: %O\n", token, token_secret, access_params, request_params))
string base_str = method + "&" + urlencode(base_url) + "&" + urlencode(make_query_string(get + post + oauth, 1));
oauth["oauth_signature"] = hmac_base64(TLS_HASH_SHA1, urlencode(consumer_secret) + "&" + urlencode(token_secret), base_str);
string p = "";
foreach (string key, string value : oauth)
p += (strlen(p) ? "," : "") + key + "=\"" + urlencode(to_string(value)) + "\"";
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ua->fetch(url, method, post, (["authorization": "OAuth " + p]));
}
void parse_request_token(string body, mapping headers, int http_status) {
P3((">> oauth:parse_request_token(%O, %O, %O)\n", body, headers, http_status))
if (http_status == R_OK) {
request_params = ([]);
url_parse_query(request_params, body);
if (strlen(request_params["oauth_token"]) && strlen(request_params["oauth_token_secret"])) {
shared_memory("oauth_request_tokens")[request_params["oauth_token"]] = ME;
//P3((">>> adding token: %O to shm: %O\n", request_params["oauth_token"], shared_memory("oauth_request_tokens")))
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if (user) sendmsg(user, "_notice_oauth_authorize_url", "Open [_url] to perform authorization.",
(["_url": authorize_url + "?oauth_token=" + request_params["oauth_token"]]));
P1(("OAuth: open %s to perform authorization.\n", authorize_url + "?oauth_token=" + request_params["oauth_token"]));
return;
}
}
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if (user) sendmsg(user, "_error_oauth_token_request", "OAuth failed: could not get a request token.");
P1(("OAuth failed: could not get a request token.\n"));
authorized = -1;
oauth_error();
}
void parse_access_token(string body, mapping headers, int http_status) {
P3((">> oauth:parse_access_token(%O, %O, %O)\n", body, headers, http_status))
if (http_status == R_OK) {
access_params = ([]);
url_parse_query(access_params, body);
if (strlen(access_params["oauth_token"]) && strlen(access_params["oauth_token_secret"])) {
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if (user) sendmsg(user, "_notice_oauth_success", "OAuth successful.");
P1(("OAuth successful.\n"));
authorized = 1;
oauth_success();
return;
}
}
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if (user) sendmsg(user, "_error_oauth_token_access", "OAuth failed: could not get an access token.");
P1(("OAuth failed: could not get an access token.\n"));
authorized = -1;
oauth_error();
}
void verified(string verifier) {
P3((">> oauth:verified(%O)\n", verifier))
object ua = clone_object(NET_PATH "http/fetch");
ua->content(#'parse_access_token, 1, 1); //');
fetch(ua, access_token_url, "POST", 0, (["oauth_verifier": verifier]));
}
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void oauth() {
if (!request_token_url) return;
request_params = ([ ]);
access_params = ([ ]);
authorized = 0;
object ua = clone_object(NET_PATH "http/fetch");
ua->content(#'parse_request_token, 1, 1); //');
fetch(ua, request_token_url, "POST", 0, (["oauth_callback": callback_url]));
}
object load(object usr, mapping opts) {
if (usr) user = usr;
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unless (mappingp(opts)) opts = ([]);
if (opts["consumer_key"]) consumer_key = opts["consumer_key"];
if (opts["consumer_secret"]) consumer_secret = opts["consumer_secret"];
if (opts["request_token_url"]) request_token_url = opts["request_token_url"];
if (opts["access_token_url"]) access_token_url = opts["access_token_url"];
if (opts["authorize_url"]) authorize_url = opts["authorize_url"];
if (access_params["oauth_token"])
authorized = 1;
else
oauth();
return ME;
}