citadel/modules/openid/serv_openid_rp.c

   1 /*
   2  * $Id$
   3  *
   4  * This is an implementation of OpenID 1.1 Relying Party support, in stateless mode.
   5  *
   6  */
   7
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13 #include <signal.h>
  14 #include <pwd.h>
  15 #include <errno.h>
  16 #include <sys/types.h>
  17
  18 #if TIME_WITH_SYS_TIME
  19 # include <sys/time.h>
  20 # include <time.h>
  21 #else
  22 # if HAVE_SYS_TIME_H
  23 #  include <sys/time.h>
  24 # else
  25 #  include <time.h>
  26 # endif
  27 #endif
  28
  29 #include <sys/wait.h>
  30 #include <string.h>
  31 #include <limits.h>
  32 #include <curl/curl.h>
  33 #include "ctdl_module.h"
  34 #include "config.h"
  35 #include "citserver.h"
  36 #include "user_ops.h"
  37
  38 struct ctdl_openid {
  39         char claimed_id[1024];
  40         char server[1024];
  41         int validated;
  42 };
  43
  44
  45
  46
  47
  48 /**************************************************************************/
  49 /*                                                                        */
  50 /* Functions in this section handle Citadel internal OpenID mapping stuff */
  51 /*                                                                        */
  52 /**************************************************************************/
  53
  54
  55 /*
  56  * The structure of an openid record *key* is:
  57  *
  58  * |--------------claimed_id-------------|
  59  *     (auctual length of claimed id)
  60  *
  61  *
  62  * The structure of an openid record *value* is:
  63  *
  64  * |-----user_number----|------------claimed_id---------------|
  65  *    (sizeof long)          (actual length of claimed id)
  66  *
  67  */
  68
  69
  70 /*
  71  * Attach an OpenID to a Citadel account
  72  */
  73 int attach_openid(struct ctdluser *who, char *claimed_id)
  74 {
  75         struct cdbdata *cdboi;
  76         long fetched_usernum;
  77         char *data;
  78         int data_len;
  79
  80         if (!who) return(1);
  81         if (!claimed_id) return(1);
  82         if (IsEmptyStr(claimed_id)) return(1);
  83
  84         /* Check to see if this OpenID is already in the database */
  85
  86         cdboi = cdb_fetch(CDB_OPENID, claimed_id, strlen(claimed_id));
  87         if (cdboi != NULL) {
  88                 memcpy(&fetched_usernum, cdboi->ptr, sizeof(long));
  89                 cdb_free(cdboi);
  90
  91                 if (fetched_usernum == who->usernum) {
  92                         CtdlLogPrintf(CTDL_INFO, "%s already associated; no action is taken\n", claimed_id);
  93                         return(0);
  94                 }
  95                 else {
  96                         CtdlLogPrintf(CTDL_INFO, "%s already belongs to another user\n", claimed_id);
  97                         return(3);
  98                 }
  99         }
 100
 101         /* Not already in the database, so attach it now */
 102
 103         data_len = sizeof(long) + strlen(claimed_id) + 1;
 104         data = malloc(data_len);
 105
 106         memcpy(data, &who->usernum, sizeof(long));
 107         memcpy(&data[sizeof(long)], claimed_id, strlen(claimed_id) + 1);
 108
 109         cdb_store(CDB_OPENID, claimed_id, strlen(claimed_id), data, data_len);
 110         free(data);
 111
 112         CtdlLogPrintf(CTDL_INFO, "%s has been associated with %s (%ld)\n",
 113                 claimed_id, who->fullname, who->usernum);
 114         return(0);
 115 }
 116
 117
 118 /*
 119  * When a user is being deleted, we have to delete any OpenID associations
 120  */
 121 void openid_purge(struct ctdluser *usbuf) {
 122         struct cdbdata *cdboi;
 123
 124         cdb_rewind(CDB_OPENID);
 125         while (cdboi = cdb_next_item(CDB_OPENID), cdboi != NULL) {
 126                 if (cdboi->len > sizeof(long)) {
 127                         if (((long)*(cdboi->ptr)) == usbuf->usernum) {
 128                                 CtdlLogPrintf(CTDL_DEBUG, "FIXME we have to delete an openid\n");
 129                         }
 130                 }
 131                 cdb_free(cdboi);
 132         }
 133
 134         /* FIXME finish this */
 135 }
 136
 137
 138
 139 /*
 140  * List the OpenIDs associated with the currently logged in account
 141  */
 142 void cmd_oidl(char *argbuf) {
 143         struct cdbdata *cdboi;
 144
 145         if (CtdlAccessCheck(ac_logged_in)) return;
 146         cdb_rewind(CDB_OPENID);
 147         cprintf("%d Associated OpenIDs:\n", LISTING_FOLLOWS);
 148
 149         while (cdboi = cdb_next_item(CDB_OPENID), cdboi != NULL) {
 150                 if (cdboi->len > sizeof(long)) {
 151                         if (((long)*(cdboi->ptr)) == CC->user.usernum) {
 152                                 cprintf("%s\n", cdboi->ptr + sizeof(long));
 153                         }
 154                 }
 155                 cdb_free(cdboi);
 156         }
 157         cprintf("000\n");
 158 }
 159
 160
 161
 162 /*
 163  * Detach an OpenID from the currently logged in account
 164  */
 165 void cmd_oidd(char *argbuf) {
 166         struct cdbdata *cdboi;
 167         char id_to_detach[1024];
 168         int this_is_mine = 0;
 169
 170         if (CtdlAccessCheck(ac_logged_in)) return;
 171         extract_token(id_to_detach, argbuf, 0, '|', sizeof id_to_detach);
 172         if (IsEmptyStr(id_to_detach)) {
 173                 cprintf("%d An empty OpenID URL is not allowed.\n", ERROR + ILLEGAL_VALUE);
 174         }
 175
 176         cdb_rewind(CDB_OPENID);
 177         while (cdboi = cdb_next_item(CDB_OPENID), cdboi != NULL) {
 178                 if (cdboi->len > sizeof(long)) {
 179                         if (((long)*(cdboi->ptr)) == CC->user.usernum) {
 180                                 this_is_mine = 1;
 181                         }
 182                 }
 183                 cdb_free(cdboi);
 184         }
 185
 186         if (!this_is_mine) {
 187                 cprintf("%d That OpenID was not found or not associated with your account.\n",
 188                         ERROR + ILLEGAL_VALUE);
 189                 return;
 190         }
 191
 192         cdb_delete(CDB_OPENID, id_to_detach, strlen(id_to_detach));
 193         cprintf("%d %s detached from your account.\n", CIT_OK, id_to_detach);
 194 }
 195
 196
 197
 198 /*
 199  * getuserbyopenid() works the same way as getuser() and getuserbynumber().
 200  * If a user account exists which is associated with the Claimed ID, it fills usbuf and returns zero.
 201  * Otherwise it returns nonzero.
 202  */
 203 int getuserbyopenid(struct ctdluser *usbuf, char *claimed_id)
 204 {
 205         struct cdbdata *cdboi;
 206         long usernum = 0;
 207
 208         cdboi = cdb_fetch(CDB_OPENID, claimed_id, strlen(claimed_id));
 209         if (cdboi == NULL) {
 210                 return(-1);
 211         }
 212
 213         memcpy(&usernum, cdboi->ptr, sizeof(long));
 214         cdb_free(cdboi);
 215
 216         return(getuserbynumber(usbuf, usernum));
 217 }
 218
 219
 220
 221 /**************************************************************************/
 222 /*                                                                        */
 223 /* Functions in this section handle OpenID protocol                       */
 224 /*                                                                        */
 225 /**************************************************************************/
 226
 227
 228 /*
 229  * Locate a <link> tag and, given its 'rel=' parameter, return its 'href' parameter
 230  */
 231 void extract_link(char *target_buf, int target_size, char *rel, char *source_buf)
 232 {
 233         char *ptr = source_buf;
 234
 235         if (!target_buf) return;
 236         if (!rel) return;
 237         if (!source_buf) return;
 238
 239         target_buf[0] = 0;
 240
 241         while (ptr = bmstrcasestr(ptr, "<link"), ptr != NULL) {
 242
 243                 char work_buffer[2048];
 244                 char *link_tag_start = NULL;
 245                 char *link_tag_end = NULL;
 246
 247                 char rel_tag[2048];
 248                 char href_tag[2048];
 249
 250                 link_tag_start = ptr;
 251                 link_tag_end = strchr(ptr, '>');
 252                 rel_tag[0] = 0;
 253                 href_tag[0] = 0;
 254
 255                 if ((link_tag_end) && (link_tag_end > link_tag_start)) {
 256                         int len;
 257                         len = link_tag_end - link_tag_start;
 258                         if (len > sizeof work_buffer) len = sizeof work_buffer;
 259                         memcpy(work_buffer, link_tag_start, len);
 260
 261                         char *rel_start = NULL;
 262                         char *rel_end = NULL;
 263                         rel_start = bmstrcasestr(work_buffer, "rel=");
 264                         if (rel_start) {
 265                                 rel_start = strchr(rel_start, '\"');
 266                                 if (rel_start) {
 267                                         ++rel_start;
 268                                         rel_end = strchr(rel_start, '\"');
 269                                         if ((rel_end) && (rel_end > rel_start)) {
 270                                                 safestrncpy(rel_tag, rel_start, rel_end - rel_start + 1);
 271                                         }
 272                                 }
 273                         }
 274
 275                         char *href_start = NULL;
 276                         char *href_end = NULL;
 277                         href_start = bmstrcasestr(work_buffer, "href=");
 278                         if (href_start) {
 279                                 href_start = strchr(href_start, '\"');
 280                                 if (href_start) {
 281                                         ++href_start;
 282                                         href_end = strchr(href_start, '\"');
 283                                         if ((href_end) && (href_end > href_start)) {
 284                                                 safestrncpy(href_tag, href_start, href_end - href_start + 1);
 285                                         }
 286                                 }
 287                         }
 288
 289                         if (!strcasecmp(rel, rel_tag)) {
 290                                 safestrncpy(target_buf, href_tag, target_size);
 291                                 return;
 292                         }
 293
 294                 }
 295
 296         ++ptr;
 297         }
 298
 299
 300 }
 301
 302
 303
 304 struct fh_data {
 305         char *buf;
 306         int total_bytes_received;
 307         int maxbytes;
 308 };
 309
 310
 311 size_t fh_callback(void *ptr, size_t size, size_t nmemb, void *stream)
 312 {
 313         struct fh_data *fh = (struct fh_data *) stream;
 314         int got_bytes = (size * nmemb);
 315
 316         if (fh->total_bytes_received + got_bytes > fh->maxbytes) {
 317                 got_bytes = fh->maxbytes - fh->total_bytes_received;
 318         }
 319         if (got_bytes > 0) {
 320                 memcpy(&fh->buf[fh->total_bytes_received], ptr, got_bytes);
 321                 fh->total_bytes_received += got_bytes;
 322         }
 323
 324         return (size * nmemb);  /* always succeed; libcurl doesn't need to know if we truncated it */
 325 }
 326
 327
 328
 329 /*
 330  * Begin an HTTP fetch (returns number of bytes actually fetched, or -1 for error) using libcurl.
 331  *
 332  * If 'normalize_len' is nonzero, the caller is specifying the buffer size of 'url', and is
 333  * requesting that the effective (normalized) URL be copied back to it.
 334  */
 335 int fetch_http(char *url, char *target_buf, int maxbytes, int normalize_len)
 336 {
 337         CURL *curl;
 338         CURLcode res;
 339         char errmsg[1024] = "";
 340         struct fh_data fh = {
 341                 target_buf,
 342                 0,
 343                 maxbytes
 344         };
 345         char *effective_url = NULL;
 346
 347         if (!url) return(-1);
 348         if (!target_buf) return(-1);
 349         memset(target_buf, 0, maxbytes);
 350
 351         curl = curl_easy_init();
 352         if (!curl) {
 353                 CtdlLogPrintf(CTDL_ALERT, "Unable to initialize libcurl.\n");
 354                 return(-1);
 355         }
 356
 357         curl_easy_setopt(curl, CURLOPT_URL, url);
 358         curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
 359         curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
 360         curl_easy_setopt(curl, CURLOPT_WRITEDATA, &fh);
 361         curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fh_callback);
 362         curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errmsg);
 363         curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
 364         curl_easy_setopt(curl, CURLOPT_USERAGENT, CITADEL);
 365         if (!IsEmptyStr(config.c_ip_addr)) {
 366                 curl_easy_setopt(curl, CURLOPT_INTERFACE, config.c_ip_addr);
 367         }
 368         res = curl_easy_perform(curl);
 369         if (res) {
 370                 CtdlLogPrintf(CTDL_DEBUG, "fetch_http() libcurl error %d: %s\n", res, errmsg);
 371         }
 372         if (normalize_len > 0) {
 373                 curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &effective_url);
 374                 safestrncpy(url, effective_url, normalize_len);
 375         }
 376         curl_easy_cleanup(curl);
 377         return fh.total_bytes_received;
 378 }
 379
 380
 381 /*
 382  * Setup an OpenID authentication
 383  */
 384 void cmd_oids(char *argbuf) {
 385         char return_to[1024];
 386         char trust_root[1024];
 387         int i;
 388         char buf[SIZ];
 389         struct CitContext *CCC = CC;    /* CachedCitContext - performance boost */
 390         struct ctdl_openid *oiddata;
 391
 392         /* commented out because we may be attempting to attach an OpenID to
 393          * an existing account that is logged in
 394          *
 395         if (CCC->logged_in) {
 396                 cprintf("%d Already logged in.\n", ERROR + ALREADY_LOGGED_IN);
 397                 return;
 398         }
 399          */
 400
 401         if (CCC->openid_data != NULL) {
 402                 free(CCC->openid_data);
 403         }
 404         oiddata = malloc(sizeof(struct ctdl_openid));
 405         if (oiddata == NULL) {
 406                 cprintf("%d malloc failed\n", ERROR + INTERNAL_ERROR);
 407                 return;
 408         }
 409         memset(oiddata, 0, sizeof(struct ctdl_openid));
 410         CCC->openid_data = (void *) oiddata;
 411
 412         extract_token(oiddata->claimed_id, argbuf, 0, '|', sizeof oiddata->claimed_id);
 413         extract_token(return_to, argbuf, 1, '|', sizeof return_to);
 414         extract_token(trust_root, argbuf, 2, '|', sizeof trust_root);
 415         oiddata->validated = 0;
 416
 417         i = fetch_http(oiddata->claimed_id, buf, sizeof buf - 1, sizeof oiddata->claimed_id);
 418         CtdlLogPrintf(CTDL_DEBUG, "Normalized URL and Claimed ID is: %s\n", oiddata->claimed_id);
 419         buf[sizeof buf - 1] = 0;
 420         if (i > 0) {
 421                 char openid_delegate[1024];
 422
 423                 extract_link(oiddata->server, sizeof oiddata->server, "openid.server", buf);
 424                 extract_link(openid_delegate, sizeof openid_delegate, "openid.delegate", buf);
 425
 426                 if (IsEmptyStr(oiddata->server)) {
 427                         cprintf("%d There is no OpenID identity provider at this URL.\n", ERROR);
 428                         return;
 429                 }
 430
 431                 /* Empty delegate is legal; we just use the openid_url instead */
 432                 if (IsEmptyStr(openid_delegate)) {
 433                         safestrncpy(openid_delegate, oiddata->claimed_id, sizeof openid_delegate);
 434                 }
 435
 436                 /* Assemble a URL to which the user-agent will be redirected. */
 437                 char redirect_string[4096];
 438                 char escaped_identity[512];
 439                 char escaped_return_to[2048];
 440                 char escaped_trust_root[1024];
 441                 char escaped_sreg_optional[256];
 442
 443                 urlesc(escaped_identity, sizeof escaped_identity, openid_delegate);
 444                 urlesc(escaped_return_to, sizeof escaped_return_to, return_to);
 445                 urlesc(escaped_trust_root, sizeof escaped_trust_root, trust_root);
 446                 urlesc(escaped_sreg_optional, sizeof escaped_sreg_optional,
 447                         "nickname,email,fullname,postcode,country");
 448
 449                 snprintf(redirect_string, sizeof redirect_string,
 450                         "%s"
 451                         "?openid.mode=checkid_setup"
 452                         "&openid.identity=%s"
 453                         "&openid.return_to=%s"
 454                         "&openid.trust_root=%s"
 455                         "&openid.sreg.optional=%s"
 456                         ,
 457                         oiddata->server,
 458                         escaped_identity,
 459                         escaped_return_to,
 460                         escaped_trust_root,
 461                         escaped_sreg_optional
 462                 );
 463                 cprintf("%d %s\n", CIT_OK, redirect_string);
 464                 return;
 465         }
 466
 467         cprintf("%d Unable to fetch OpenID URL\n", ERROR);
 468 }
 469
 470
 471
 472 /*
 473  * Callback function to free a pointer (used below in the hash list)
 474  */
 475 void free_oid_key(void *ptr) {
 476         free(ptr);
 477 }
 478
 479
 480 /*
 481  * Finalize an OpenID authentication
 482  */
 483 void cmd_oidf(char *argbuf) {
 484         char buf[2048];
 485         char thiskey[1024];
 486         char thisdata[1024];
 487         HashList *keys = NULL;
 488         HashPos *HashPos;
 489         struct ctdl_openid *oiddata = (struct ctdl_openid *) CC->openid_data;
 490
 491         keys = NewHash(1, NULL);
 492         if (!keys) {
 493                 cprintf("%d NewHash() failed\n", ERROR + INTERNAL_ERROR);
 494                 return;
 495         }
 496
 497         cprintf("%d Transmit OpenID data now\n", START_CHAT_MODE);
 498
 499         while (client_getln(buf, sizeof buf), strcmp(buf, "000")) {
 500                 extract_token(thiskey, buf, 0, '|', sizeof thiskey);
 501                 extract_token(thisdata, buf, 1, '|', sizeof thisdata);
 502                 CtdlLogPrintf(CTDL_DEBUG, "%s: [%d] %s\n", thiskey, strlen(thisdata), thisdata);
 503                 Put(keys, thiskey, strlen(thiskey), strdup(thisdata), free_oid_key);
 504         }
 505
 506
 507         /* Now that we have all of the parameters, we have to validate the signature against the server */
 508         CtdlLogPrintf(CTDL_DEBUG, "About to validate the signature...\n");
 509
 510         CURL *curl;
 511         CURLcode res;
 512         struct curl_httppost *formpost = NULL;
 513         struct curl_httppost *lastptr = NULL;
 514         char errmsg[1024] = "";
 515         char *o_assoc_handle = NULL;
 516         char *o_sig = NULL;
 517         char *o_signed = NULL;
 518         int num_signed_values;
 519         int i;
 520         char k_keyname[128];
 521         char k_o_keyname[128];
 522         char *k_value = NULL;
 523         char valbuf[1024];
 524
 525         struct fh_data fh = {
 526                 valbuf,
 527                 0,
 528                 sizeof valbuf
 529         };
 530
 531         curl_formadd(&formpost, &lastptr,
 532                 CURLFORM_COPYNAME,      "openid.mode",
 533                 CURLFORM_COPYCONTENTS,  "check_authentication",
 534                 CURLFORM_END);
 535         CtdlLogPrintf(CTDL_DEBUG, "%25s : %s\n", "openid.mode", "check_authentication");
 536
 537         if (GetHash(keys, "assoc_handle", 12, (void *) &o_assoc_handle)) {
 538                 curl_formadd(&formpost, &lastptr,
 539                         CURLFORM_COPYNAME,      "openid.assoc_handle",
 540                         CURLFORM_COPYCONTENTS,  o_assoc_handle,
 541                         CURLFORM_END);
 542                 CtdlLogPrintf(CTDL_DEBUG, "%25s : %s\n", "openid.assoc_handle", o_assoc_handle);
 543         }
 544
 545         if (GetHash(keys, "sig", 3, (void *) &o_sig)) {
 546                 curl_formadd(&formpost, &lastptr,
 547                         CURLFORM_COPYNAME,      "openid.sig",
 548                         CURLFORM_COPYCONTENTS,  o_sig,
 549                         CURLFORM_END);
 550                         CtdlLogPrintf(CTDL_DEBUG, "%25s : %s\n", "openid.sig", o_sig);
 551         }
 552
 553         if (GetHash(keys, "signed", 6, (void *) &o_signed)) {
 554                 curl_formadd(&formpost, &lastptr,
 555                         CURLFORM_COPYNAME,      "openid.signed",
 556                         CURLFORM_COPYCONTENTS,  o_signed,
 557                         CURLFORM_END);
 558                 CtdlLogPrintf(CTDL_DEBUG, "%25s : %s\n", "openid.signed", o_signed);
 559
 560                 num_signed_values = num_tokens(o_signed, ',');
 561                 for (i=0; i<num_signed_values; ++i) {
 562                         extract_token(k_keyname, o_signed, i, ',', sizeof k_keyname);
 563                         if (strcasecmp(k_keyname, "mode")) {    // work around phpMyID bug
 564                                 if (GetHash(keys, k_keyname, strlen(k_keyname), (void *) &k_value)) {
 565                                         snprintf(k_o_keyname, sizeof k_o_keyname, "openid.%s", k_keyname);
 566                                         curl_formadd(&formpost, &lastptr,
 567                                                 CURLFORM_COPYNAME,      k_o_keyname,
 568                                                 CURLFORM_COPYCONTENTS,  k_value,
 569                                                 CURLFORM_END);
 570                                         CtdlLogPrintf(CTDL_DEBUG, "%25s : %s\n", k_o_keyname, k_value);
 571                                 }
 572                                 else {
 573                                         CtdlLogPrintf(CTDL_INFO, "OpenID: signed field '%s' is missing\n",
 574                                                 k_keyname);
 575                                 }
 576                         }
 577                 }
 578         }
 579
 580         curl = curl_easy_init();
 581         curl_easy_setopt(curl, CURLOPT_URL, oiddata->server);
 582         curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
 583         curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
 584         curl_easy_setopt(curl, CURLOPT_WRITEDATA, &fh);
 585         curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fh_callback);
 586         curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
 587         curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errmsg);
 588         curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
 589         curl_easy_setopt(curl, CURLOPT_USERAGENT, CITADEL);
 590         if (!IsEmptyStr(config.c_ip_addr)) {
 591                 curl_easy_setopt(curl, CURLOPT_INTERFACE, config.c_ip_addr);
 592         }
 593
 594         res = curl_easy_perform(curl);
 595         if (res) {
 596                 CtdlLogPrintf(CTDL_DEBUG, "cmd_oidf() libcurl error %d: %s\n", res, errmsg);
 597         }
 598         curl_easy_cleanup(curl);
 599         curl_formfree(formpost);
 600
 601         valbuf[fh.total_bytes_received] = 0;
 602
 603         if (bmstrcasestr(valbuf, "is_valid:true")) {
 604                 oiddata->validated = 1;
 605         }
 606
 607         CtdlLogPrintf(CTDL_DEBUG, "Authentication %s.\n", (oiddata->validated ? "succeeded" : "failed") );
 608
 609         /* Respond to the client */
 610
 611         if (oiddata->validated) {
 612
 613                 /* If we were already logged in, attach the OpenID to the user's account */
 614                 if (CC->logged_in) {
 615                         if (attach_openid(&CC->user, oiddata->claimed_id) == 0) {
 616                                 cprintf("attach\n");
 617                         }
 618                         else {
 619                                 cprintf("fail\n");
 620                         }
 621                 }
 622
 623                 /* Otherwise, a user is attempting to log in using the validated OpenID */
 624                 else {
 625                         struct ctdluser usbuf;
 626
 627                         /*
 628                          * Existing user who has claimed this OpenID?
 629                          *
 630                          * Note: if you think that sending the password back over the wire is insecure,
 631                          * check your assumptions.  If someone has successfully asserted an OpenID that
 632                          * is associated with the account, they already have password equivalency and can
 633                          * login, so they could just as easily change the password, etc.
 634                          */
 635                         if (getuserbyopenid(&usbuf, oiddata->claimed_id) == 0) {
 636                                 cprintf("authenticate\n%s\n%s\n", usbuf.fullname, usbuf.password);
 637                         }
 638
 639                         else {
 640                                 cprintf("fail\n");              // FIXME do the login here!!
 641                         }
 642                 }
 643         }
 644         else {
 645                 cprintf("fail\n");
 646         }
 647         cprintf("000\n");
 648
 649         /* Free the hash list */
 650         long len;
 651         void *Value;
 652         char *Key;
 653
 654         HashPos = GetNewHashPos();
 655         while (GetNextHashPos(keys, HashPos, &len, &Key, &Value)!=0)
 656         {
 657                 free(Value);
 658         }
 659         DeleteHashPos(&HashPos);
 660 }
 661
 662
 663 // mode = [6]  id_res
 664 // identity = [50]  http://uncensored.citadel.org/~ajc/MyID.config.php
 665 // assoc_handle = [26]  6ekac3ju181tgepk7v4h9r7ui7
 666 // return_to = [42]  http://jemcaterers.net/finish_openid_login
 667 // sreg.nickname = [17]  IGnatius T Foobar
 668 // sreg.email = [26]  ajc@uncensored.citadel.org
 669 // sreg.fullname = [10]  Art Cancro
 670 // sreg.postcode = [5]  10549
 671 // sreg.country = [2]  US
 672 // signed = [102]  mode,identity,assoc_handle,return_to,sreg.nickname,sreg.email,sreg.fullname,sreg.postcode,sreg.country
 673 // sig = [28]  vixxxU4MAqWfxxxxCfrHv3TxxxhEw=
 674
 675
 676
 677
 678 /**************************************************************************/
 679 /*                                                                        */
 680 /* Functions in this section handle module initialization and shutdown    */
 681 /*                                                                        */
 682 /**************************************************************************/
 683
 684
 685 /*
 686  * This cleanup function blows away the temporary memory used by this module.
 687  */
 688 void openid_cleanup_function(void) {
 689
 690         if (CC->openid_data != NULL) {
 691                 free(CC->openid_data);
 692         }
 693 }
 694
 695
 696 CTDL_MODULE_INIT(openid_rp)
 697 {
 698         if (!threading)
 699         {
 700                 curl_global_init(CURL_GLOBAL_ALL);
 701                 CtdlRegisterProtoHook(cmd_oids, "OIDS", "Setup OpenID authentication");
 702                 CtdlRegisterProtoHook(cmd_oidf, "OIDF", "Finalize OpenID authentication");
 703                 CtdlRegisterProtoHook(cmd_oidl, "OIDL", "List OpenIDs associated with an account");
 704                 CtdlRegisterProtoHook(cmd_oidd, "OIDD", "Detach an OpenID from an account");
 705                 CtdlRegisterSessionHook(openid_cleanup_function, EVT_STOP);
 706                 CtdlRegisterUserHook(openid_purge, EVT_PURGEUSER);
 707         }
 708
 709         /* return our Subversion id for the Log */
 710         return "$Id$";
 711 }
 712
 713
 714 /* FIXME ... we have to add the new openid database to serv_vandelay.c */
 715