2.68 mastoapi.c
   1/* snac - A simple, minimalistic ActivityPub instance */
   2/* copyright (c) 2022 - 2024 grunfink et al. / MIT license */
   3
   4#ifndef NO_MASTODON_API
   5
   6#include "xs.h"
   7#include "xs_hex.h"
   8#include "xs_openssl.h"
   9#include "xs_json.h"
  10#include "xs_io.h"
  11#include "xs_time.h"
  12#include "xs_glob.h"
  13#include "xs_set.h"
  14#include "xs_random.h"
  15#include "xs_url.h"
  16#include "xs_mime.h"
  17#include "xs_match.h"
  18
  19#include "snac.h"
  20
  21#include <sys/time.h>
  22
  23static xs_str *random_str(void)
  24/* just what is says in the tin */
  25{
  26    unsigned int data[4] = {0};
  27
  28    xs_rnd_buf(data, sizeof(data));
  29    return xs_hex_enc((char *)data, sizeof(data));
  30}
  31
  32
  33int app_add(const char *id, const xs_dict *app)
  34/* stores an app */
  35{
  36    if (!xs_is_hex(id))
  37        return HTTP_STATUS_INTERNAL_SERVER_ERROR;
  38
  39    int status = HTTP_STATUS_CREATED;
  40    xs *fn     = xs_fmt("%s/app/", srv_basedir);
  41    FILE *f;
  42
  43    mkdirx(fn);
  44    fn = xs_str_cat(fn, id);
  45    fn = xs_str_cat(fn, ".json");
  46
  47    if ((f = fopen(fn, "w")) != NULL) {
  48        xs_json_dump(app, 4, f);
  49        fclose(f);
  50    }
  51    else
  52        status = HTTP_STATUS_INTERNAL_SERVER_ERROR;
  53
  54    return status;
  55}
  56
  57
  58xs_str *_app_fn(const char *id)
  59{
  60    return xs_fmt("%s/app/%s.json", srv_basedir, id);
  61}
  62
  63
  64xs_dict *app_get(const char *id)
  65/* gets an app */
  66{
  67    if (!xs_is_hex(id))
  68        return NULL;
  69
  70    xs *fn       = _app_fn(id);
  71    xs_dict *app = NULL;
  72    FILE *f;
  73
  74    if ((f = fopen(fn, "r")) != NULL) {
  75        app = xs_json_load(f);
  76        fclose(f);
  77
  78    }
  79
  80    return app;
  81}
  82
  83
  84int app_del(const char *id)
  85/* deletes an app */
  86{
  87    if (!xs_is_hex(id))
  88        return -1;
  89
  90    xs *fn = _app_fn(id);
  91
  92    return unlink(fn);
  93}
  94
  95
  96int token_add(const char *id, const xs_dict *token)
  97/* stores a token */
  98{
  99    if (!xs_is_hex(id))
 100        return HTTP_STATUS_INTERNAL_SERVER_ERROR;
 101
 102    int status = HTTP_STATUS_CREATED;
 103    xs *fn     = xs_fmt("%s/token/", srv_basedir);
 104    FILE *f;
 105
 106    mkdirx(fn);
 107    fn = xs_str_cat(fn, id);
 108    fn = xs_str_cat(fn, ".json");
 109
 110    if ((f = fopen(fn, "w")) != NULL) {
 111        xs_json_dump(token, 4, f);
 112        fclose(f);
 113    }
 114    else
 115        status = HTTP_STATUS_INTERNAL_SERVER_ERROR;
 116
 117    return status;
 118}
 119
 120
 121xs_dict *token_get(const char *id)
 122/* gets a token */
 123{
 124    if (!xs_is_hex(id))
 125        return NULL;
 126
 127    xs *fn         = xs_fmt("%s/token/%s.json", srv_basedir, id);
 128    xs_dict *token = NULL;
 129    FILE *f;
 130
 131    if ((f = fopen(fn, "r")) != NULL) {
 132        token = xs_json_load(f);
 133        fclose(f);
 134
 135        /* 'touch' the file */
 136        utimes(fn, NULL);
 137
 138        /* also 'touch' the app */
 139        const char *app_id = xs_dict_get(token, "client_id");
 140
 141        if (app_id) {
 142            xs *afn = xs_fmt("%s/app/%s.json", srv_basedir, app_id);
 143            utimes(afn, NULL);
 144        }
 145    }
 146
 147    return token;
 148}
 149
 150
 151int token_del(const char *id)
 152/* deletes a token */
 153{
 154    if (!xs_is_hex(id))
 155        return -1;
 156
 157    xs *fn = xs_fmt("%s/token/%s.json", srv_basedir, id);
 158
 159    return unlink(fn);
 160}
 161
 162
 163const char *login_page = ""
 164"<!DOCTYPE html>\n"
 165"<html>\n"
 166"<head>\n"
 167"<title>%s OAuth - Snac2</title>\n"
 168"<meta content=\"width=device-width, initial-scale=1, minimum-scale=1, user-scalable=no\" name=\"viewport\">"
 169"<style>:root {color-scheme: light dark}</style>\n"
 170"</head>\n"
 171"<body><h1>%s OAuth identify</h1>\n"
 172"<div style=\"background-color: red; color: white\">%s</div>\n"
 173"<form method=\"post\" action=\"%s:/" "/%s/%s\">\n"
 174"<p>Login: <input type=\"text\" name=\"login\" autocapitalize=\"off\"></p>\n"
 175"<p>Password: <input type=\"password\" name=\"passwd\"></p>\n"
 176"<input type=\"hidden\" name=\"redir\" value=\"%s\">\n"
 177"<input type=\"hidden\" name=\"cid\" value=\"%s\">\n"
 178"<input type=\"hidden\" name=\"state\" value=\"%s\">\n"
 179"<input type=\"submit\" value=\"OK\">\n"
 180"</form><p>%s</p></body></html>\n"
 181"";
 182
 183int oauth_get_handler(const xs_dict *req, const char *q_path,
 184                      char **body, int *b_size, char **ctype)
 185{
 186    (void)b_size;
 187
 188    if (!xs_startswith(q_path, "/oauth/"))
 189        return 0;
 190
 191    int status   = HTTP_STATUS_NOT_FOUND;
 192    const xs_dict *msg = xs_dict_get(req, "q_vars");
 193    xs *cmd      = xs_replace_n(q_path, "/oauth", "", 1);
 194
 195    srv_debug(1, xs_fmt("oauth_get_handler %s", q_path));
 196
 197    if (strcmp(cmd, "/authorize") == 0) { /** **/
 198        const char *cid   = xs_dict_get(msg, "client_id");
 199        const char *ruri  = xs_dict_get(msg, "redirect_uri");
 200        const char *rtype = xs_dict_get(msg, "response_type");
 201        const char *state = xs_dict_get(msg, "state");
 202
 203        status = HTTP_STATUS_BAD_REQUEST;
 204
 205        if (cid && ruri && rtype && strcmp(rtype, "code") == 0) {
 206            xs *app = app_get(cid);
 207
 208            if (app != NULL) {
 209                const char *host = xs_dict_get(srv_config, "host");
 210                const char *proto = xs_dict_get_def(srv_config, "protocol", "https");
 211
 212                if (xs_is_null(state))
 213                    state = "";
 214
 215                *body  = xs_fmt(login_page, host, host, "", proto, host, "oauth/x-snac-login",
 216                                ruri, cid, state, USER_AGENT);
 217                *ctype = "text/html";
 218                status = HTTP_STATUS_OK;
 219
 220                srv_debug(1, xs_fmt("oauth authorize: generating login page"));
 221            }
 222            else
 223                srv_debug(1, xs_fmt("oauth authorize: bad client_id %s", cid));
 224        }
 225        else
 226            srv_debug(1, xs_fmt("oauth authorize: invalid or unset arguments"));
 227    }
 228    else
 229    if (strcmp(cmd, "/x-snac-get-token") == 0) { /** **/
 230        const char *host = xs_dict_get(srv_config, "host");
 231        const char *proto = xs_dict_get_def(srv_config, "protocol", "https");
 232
 233        *body  = xs_fmt(login_page, host, host, "", proto, host, "oauth/x-snac-get-token",
 234                        "", "", "", USER_AGENT);
 235        *ctype = "text/html";
 236        status = HTTP_STATUS_OK;
 237
 238    }
 239
 240    return status;
 241}
 242
 243
 244int oauth_post_handler(const xs_dict *req, const char *q_path,
 245                       const char *payload, int p_size,
 246                       char **body, int *b_size, char **ctype)
 247{
 248    (void)p_size;
 249    (void)b_size;
 250
 251    if (!xs_startswith(q_path, "/oauth/"))
 252        return 0;
 253
 254    int status   = HTTP_STATUS_NOT_FOUND;
 255
 256    const char *i_ctype = xs_dict_get(req, "content-type");
 257    xs *args      = NULL;
 258
 259    if (i_ctype && xs_startswith(i_ctype, "application/json")) {
 260        if (!xs_is_null(payload))
 261            args = xs_json_loads(payload);
 262    }
 263    else
 264    if (i_ctype && xs_startswith(i_ctype, "application/x-www-form-urlencoded") && payload) {
 265        args    = xs_url_vars(payload);
 266    }
 267    else
 268        args = xs_dup(xs_dict_get(req, "p_vars"));
 269
 270    if (args == NULL)
 271        return HTTP_STATUS_BAD_REQUEST;
 272
 273    xs *cmd = xs_replace_n(q_path, "/oauth", "", 1);
 274
 275    srv_debug(1, xs_fmt("oauth_post_handler %s", q_path));
 276
 277    if (strcmp(cmd, "/x-snac-login") == 0) { /** **/
 278        const char *login  = xs_dict_get(args, "login");
 279        const char *passwd = xs_dict_get(args, "passwd");
 280        const char *redir  = xs_dict_get(args, "redir");
 281        const char *cid    = xs_dict_get(args, "cid");
 282        const char *state  = xs_dict_get(args, "state");
 283        const char *host   = xs_dict_get(srv_config, "host");
 284        const char *proto = xs_dict_get_def(srv_config, "protocol", "https");
 285
 286        /* by default, generate another login form with an error */
 287        *body  = xs_fmt(login_page, host, host, "LOGIN INCORRECT", proto, host, "oauth/x-snac-login",
 288                        redir, cid, state, USER_AGENT);
 289        *ctype = "text/html";
 290        status = HTTP_STATUS_OK;
 291
 292        if (login && passwd && redir && cid) {
 293            snac snac;
 294
 295            if (user_open(&snac, login)) {
 296                const char *addr = xs_or(xs_dict_get(req, "remote-addr"),
 297                                         xs_dict_get(req, "x-forwarded-for"));
 298
 299                if (badlogin_check(login, addr)) {
 300                    /* check the login + password */
 301                    if (check_password(login, passwd, xs_dict_get(snac.config, "passwd"))) {
 302                        /* success! redirect to the desired uri */
 303                        xs *code = random_str();
 304
 305                        xs_free(*body);
 306
 307                        if (strcmp(redir, "urn:ietf:wg:oauth:2.0:oob") == 0) {
 308                            *body = xs_dup(code);
 309                        }
 310                        else {
 311                            if (xs_str_in(redir, "?") != -1)
 312                                *body = xs_fmt("%s&code=%s", redir, code);
 313                            else
 314                                *body = xs_fmt("%s?code=%s", redir, code);
 315
 316                            status = HTTP_STATUS_SEE_OTHER;
 317                        }
 318
 319                        /* if there is a state, add it */
 320                        if (!xs_is_null(state) && *state) {
 321                            *body = xs_str_cat(*body, "&state=");
 322                            *body = xs_str_cat(*body, state);
 323                        }
 324
 325                        srv_log(xs_fmt("oauth x-snac-login: '%s' success, redirect to %s",
 326                                   login, *body));
 327
 328                        /* assign the login to the app */
 329                        xs *app = app_get(cid);
 330
 331                        if (app != NULL) {
 332                            app = xs_dict_set(app, "uid",  login);
 333                            app = xs_dict_set(app, "code", code);
 334                            app_add(cid, app);
 335                        }
 336                        else
 337                            srv_log(xs_fmt("oauth x-snac-login: error getting app %s", cid));
 338                    }
 339                    else {
 340                        srv_debug(1, xs_fmt("oauth x-snac-login: login '%s' incorrect", login));
 341                        badlogin_inc(login, addr);
 342                    }
 343                }
 344
 345                user_free(&snac);
 346            }
 347            else
 348                srv_debug(1, xs_fmt("oauth x-snac-login: bad user '%s'", login));
 349        }
 350        else
 351            srv_debug(1, xs_fmt("oauth x-snac-login: invalid or unset arguments"));
 352    }
 353    else
 354    if (strcmp(cmd, "/token") == 0) { /** **/
 355        xs *wrk = NULL;
 356        const char *gtype = xs_dict_get(args, "grant_type");
 357        const char *code  = xs_dict_get(args, "code");
 358        const char *cid   = xs_dict_get(args, "client_id");
 359        const char *csec  = xs_dict_get(args, "client_secret");
 360        const char *ruri  = xs_dict_get(args, "redirect_uri");
 361        const char *scope = xs_dict_get(args, "scope");
 362
 363        /* no client_secret? check if it's inside an authorization header
 364           (AndStatus does it this way) */
 365        if (xs_is_null(csec)) {
 366            const char *auhdr = xs_dict_get(req, "authorization");
 367
 368            if (!xs_is_null(auhdr) && xs_startswith(auhdr, "Basic ")) {
 369                xs *s1 = xs_replace_n(auhdr, "Basic ", "", 1);
 370                int size;
 371                xs *s2 = xs_base64_dec(s1, &size);
 372
 373                if (!xs_is_null(s2)) {
 374                    xs *l1 = xs_split(s2, ":");
 375
 376                    if (xs_list_len(l1) == 2) {
 377                        wrk = xs_dup(xs_list_get(l1, 1));
 378                        csec = wrk;
 379                    }
 380                }
 381            }
 382        }
 383
 384        /* no code? 
 385           I'm not sure of the impacts of this right now, but Subway Tooter does not
 386           provide a code so one must be generated */
 387        if (xs_is_null(code)){
 388            code = random_str();
 389        }
 390        if (gtype && code && cid && csec && ruri) {
 391            xs *app = app_get(cid);
 392
 393            if (app == NULL) {
 394                status = HTTP_STATUS_UNAUTHORIZED;
 395                srv_log(xs_fmt("oauth token: invalid app %s", cid));
 396            }
 397            else
 398            if (strcmp(csec, xs_dict_get(app, "client_secret")) != 0) {
 399                status = HTTP_STATUS_UNAUTHORIZED;
 400                srv_log(xs_fmt("oauth token: invalid client_secret for app %s", cid));
 401            }
 402            else {
 403                xs *rsp   = xs_dict_new();
 404                xs *cat   = xs_number_new(time(NULL));
 405                xs *tokid = random_str();
 406
 407                rsp = xs_dict_append(rsp, "access_token", tokid);
 408                rsp = xs_dict_append(rsp, "token_type",   "Bearer");
 409                rsp = xs_dict_append(rsp, "created_at",   cat);
 410
 411                if (!xs_is_null(scope))
 412                    rsp = xs_dict_append(rsp, "scope", scope);
 413
 414                *body  = xs_json_dumps(rsp, 4);
 415                *ctype = "application/json";
 416                status = HTTP_STATUS_OK;
 417
 418                const char *uid = xs_dict_get(app, "uid");
 419
 420                srv_debug(1, xs_fmt("oauth token: "
 421                                "successful login for %s, new token %s", uid, tokid));
 422
 423                xs *token = xs_dict_new();
 424                token = xs_dict_append(token, "token",         tokid);
 425                token = xs_dict_append(token, "client_id",     cid);
 426                token = xs_dict_append(token, "client_secret", csec);
 427                token = xs_dict_append(token, "uid",           uid);
 428                token = xs_dict_append(token, "code",          code);
 429
 430                token_add(tokid, token);
 431            }
 432        }
 433        else {
 434            srv_debug(1, xs_fmt("oauth token: invalid or unset arguments"));
 435            status = HTTP_STATUS_BAD_REQUEST;
 436        }
 437    }
 438    else
 439    if (strcmp(cmd, "/revoke") == 0) { /** **/
 440        const char *cid   = xs_dict_get(args, "client_id");
 441        const char *csec  = xs_dict_get(args, "client_secret");
 442        const char *tokid = xs_dict_get(args, "token");
 443
 444        if (cid && csec && tokid) {
 445            xs *token = token_get(tokid);
 446
 447            *body  = xs_str_new("{}");
 448            *ctype = "application/json";
 449
 450            if (token == NULL || strcmp(csec, xs_dict_get(token, "client_secret")) != 0) {
 451                srv_debug(1, xs_fmt("oauth revoke: bad secret for token %s", tokid));
 452                status = HTTP_STATUS_FORBIDDEN;
 453            }
 454            else {
 455                token_del(tokid);
 456                srv_debug(1, xs_fmt("oauth revoke: revoked token %s", tokid));
 457                status = HTTP_STATUS_OK;
 458
 459                /* also delete the app, as it serves no purpose from now on */
 460                app_del(cid);
 461            }
 462        }
 463        else {
 464            srv_debug(1, xs_fmt("oauth revoke: invalid or unset arguments"));
 465            status = HTTP_STATUS_FORBIDDEN;
 466        }
 467    }
 468    if (strcmp(cmd, "/x-snac-get-token") == 0) { /** **/
 469        const char *login  = xs_dict_get(args, "login");
 470        const char *passwd = xs_dict_get(args, "passwd");
 471        const char *host   = xs_dict_get(srv_config, "host");
 472        const char *proto  = xs_dict_get_def(srv_config, "protocol", "https");
 473
 474        /* by default, generate another login form with an error */
 475        *body  = xs_fmt(login_page, host, host, "LOGIN INCORRECT", proto, host, "oauth/x-snac-get-token",
 476                        "", "", "", USER_AGENT);
 477        *ctype = "text/html";
 478        status = HTTP_STATUS_OK;
 479
 480        if (login && passwd) {
 481            snac user;
 482
 483            if (user_open(&user, login)) {
 484                const char *addr = xs_or(xs_dict_get(req, "remote-addr"),
 485                                         xs_dict_get(req, "x-forwarded-for"));
 486
 487                if (badlogin_check(login, addr)) {
 488                    /* check the login + password */
 489                    if (check_password(login, passwd, xs_dict_get(user.config, "passwd"))) {
 490                        /* success! create a new token */
 491                        xs *tokid = random_str();
 492
 493                        srv_debug(1, xs_fmt("x-snac-new-token: "
 494                                    "successful login for %s, new token %s", login, tokid));
 495
 496                        xs *token = xs_dict_new();
 497                        token = xs_dict_append(token, "token",         tokid);
 498                        token = xs_dict_append(token, "client_id",     "snac-client");
 499                        token = xs_dict_append(token, "client_secret", "");
 500                        token = xs_dict_append(token, "uid",           login);
 501                        token = xs_dict_append(token, "code",          "");
 502
 503                        token_add(tokid, token);
 504
 505                        *ctype = "text/plain";
 506                        xs_free(*body);
 507                        *body = xs_dup(tokid);
 508                    }
 509                    else
 510                        badlogin_inc(login, addr);
 511
 512                    user_free(&user);
 513                }
 514            }
 515        }
 516    }
 517
 518    return status;
 519}
 520
 521
 522xs_str *mastoapi_id(const xs_dict *msg)
 523/* returns a somewhat Mastodon-compatible status id */
 524{
 525    const char *id = xs_dict_get(msg, "id");
 526    xs *md5        = xs_md5_hex(id, strlen(id));
 527
 528    return xs_fmt("%10.0f%s", object_ctime_by_md5(md5), md5);
 529}
 530
 531#define MID_TO_MD5(id) (id + 10)
 532
 533
 534xs_dict *mastoapi_account(snac *logged, const xs_dict *actor)
 535/* converts an ActivityPub actor to a Mastodon account */
 536{
 537    const char *id  = xs_dict_get(actor, "id");
 538    const char *pub = xs_dict_get(actor, "published");
 539    const char *proxy = NULL;
 540
 541    if (xs_type(id) != XSTYPE_STRING)
 542        return NULL;
 543
 544    if (logged && xs_is_true(xs_dict_get(srv_config, "proxy_media")))
 545        proxy = logged->actor;
 546
 547    const char *prefu = xs_dict_get(actor, "preferredUsername");
 548
 549    const char *display_name = xs_dict_get(actor, "name");
 550    if (xs_is_null(display_name) || *display_name == '\0')
 551        display_name = prefu;
 552
 553    xs_dict *acct = xs_dict_new();
 554    xs *acct_md5  = xs_md5_hex(id, strlen(id));
 555    acct = xs_dict_append(acct, "id",           acct_md5);
 556    acct = xs_dict_append(acct, "username",     prefu);
 557    acct = xs_dict_append(acct, "display_name", display_name);
 558    acct = xs_dict_append(acct, "discoverable", xs_stock(XSTYPE_TRUE));
 559    acct = xs_dict_append(acct, "group",        xs_stock(XSTYPE_FALSE));
 560    acct = xs_dict_append(acct, "hide_collections", xs_stock(XSTYPE_FALSE));
 561    acct = xs_dict_append(acct, "indexable",    xs_stock(XSTYPE_TRUE));
 562    acct = xs_dict_append(acct, "noindex",      xs_stock(XSTYPE_FALSE));
 563    acct = xs_dict_append(acct, "roles",        xs_stock(XSTYPE_LIST));
 564
 565    {
 566        /* create the acct field as user@host */
 567        xs *l     = xs_split(id, "/");
 568        xs *fquid = xs_fmt("%s@%s", prefu, xs_list_get(l, 2));
 569        acct      = xs_dict_append(acct, "acct", fquid);
 570    }
 571
 572    if (pub)
 573        acct = xs_dict_append(acct, "created_at", pub);
 574    else {
 575        /* unset created_at crashes Tusky, so lie like a mf */
 576        xs *date = xs_str_utctime(0, ISO_DATE_SPEC);
 577        acct = xs_dict_append(acct, "created_at", date);
 578    }
 579
 580    xs *last_status_at = xs_str_utctime(0, "%Y-%m-%d");
 581    acct = xs_dict_append(acct, "last_status_at", last_status_at);
 582
 583    const char *note = xs_dict_get(actor, "summary");
 584    if (xs_is_null(note))
 585        note = "";
 586
 587    if (strcmp(xs_dict_get(actor, "type"), "Service") == 0)
 588        acct = xs_dict_append(acct, "bot", xs_stock(XSTYPE_TRUE));
 589    else
 590        acct = xs_dict_append(acct, "bot", xs_stock(XSTYPE_FALSE));
 591
 592    acct = xs_dict_append(acct, "note", note);
 593
 594    acct = xs_dict_append(acct, "url", id);
 595    acct = xs_dict_append(acct, "uri", id);
 596
 597    xs *avatar  = NULL;
 598    const xs_dict *av = xs_dict_get(actor, "icon");
 599
 600    if (xs_type(av) == XSTYPE_DICT) {
 601        const char *url = xs_dict_get(av, "url");
 602
 603        if (url != NULL)
 604            avatar = make_url(url, proxy, 1);
 605    }
 606
 607    if (avatar == NULL)
 608        avatar = xs_fmt("%s/susie.png", srv_baseurl);
 609
 610    acct = xs_dict_append(acct, "avatar", avatar);
 611    acct = xs_dict_append(acct, "avatar_static", avatar);
 612
 613    xs *header  = NULL;
 614    const xs_dict *hd = xs_dict_get(actor, "image");
 615
 616    if (xs_type(hd) == XSTYPE_DICT)
 617        header = make_url(xs_dict_get(hd, "url"), proxy, 1);
 618
 619    if (xs_is_null(header))
 620        header = xs_str_new(NULL);
 621
 622    acct = xs_dict_append(acct, "header", header);
 623    acct = xs_dict_append(acct, "header_static", header);
 624
 625    /* emojis */
 626    const xs_list *p;
 627    if (!xs_is_null(p = xs_dict_get(actor, "tag"))) {
 628        xs *eml = xs_list_new();
 629        const xs_dict *v;
 630        int c = 0;
 631
 632        while (xs_list_next(p, &v, &c)) {
 633            const char *type = xs_dict_get(v, "type");
 634
 635            if (!xs_is_null(type) && strcmp(type, "Emoji") == 0) {
 636                const char *name    = xs_dict_get(v, "name");
 637                const xs_dict *icon = xs_dict_get(v, "icon");
 638
 639                if (!xs_is_null(name) && !xs_is_null(icon)) {
 640                    const char *o_url = xs_dict_get(icon, "url");
 641
 642                    if (!xs_is_null(o_url)) {
 643                        xs *url = make_url(o_url, proxy, 1);
 644                        xs *nm = xs_strip_chars_i(xs_dup(name), ":");
 645                        xs *d1 = xs_dict_new();
 646
 647                        d1 = xs_dict_append(d1, "shortcode",         nm);
 648                        d1 = xs_dict_append(d1, "url",               url);
 649                        d1 = xs_dict_append(d1, "static_url",        url);
 650                        d1 = xs_dict_append(d1, "visible_in_picker", xs_stock(XSTYPE_TRUE));
 651
 652                        eml = xs_list_append(eml, d1);
 653                    }
 654                }
 655            }
 656        }
 657
 658        acct = xs_dict_append(acct, "emojis", eml);
 659    }
 660
 661    acct = xs_dict_append(acct, "locked", xs_stock(XSTYPE_FALSE));
 662    acct = xs_dict_append(acct, "followers_count", xs_stock(0));
 663    acct = xs_dict_append(acct, "following_count", xs_stock(0));
 664    acct = xs_dict_append(acct, "statuses_count", xs_stock(0));
 665
 666    xs *fields = xs_list_new();
 667    p = xs_dict_get(actor, "attachment");
 668    const xs_dict *v;
 669
 670    /* dict of validated links */
 671    xs_dict *val_links = NULL;
 672    const xs_dict *metadata  = xs_stock(XSTYPE_DICT);
 673    snac user = {0};
 674
 675    if (xs_startswith(id, srv_baseurl)) {
 676        /* if it's a local user, open it and pick its validated links */
 677        if (user_open(&user, prefu)) {
 678            val_links = user.links;
 679            metadata  = xs_dict_get_def(user.config, "metadata", xs_stock(XSTYPE_DICT));
 680
 681            /* does this user want to publish their contact metrics? */
 682            if (xs_is_true(xs_dict_get(user.config, "show_contact_metrics"))) {
 683                xs *fwing = following_list(&user);
 684                xs *fwers = follower_list(&user);
 685                xs *ni = xs_number_new(xs_list_len(fwing));
 686                xs *ne = xs_number_new(xs_list_len(fwers));
 687
 688                acct = xs_dict_append(acct, "followers_count", ne);
 689                acct = xs_dict_append(acct, "following_count", ni);
 690            }
 691        }
 692    }
 693
 694    if (xs_is_null(val_links))
 695        val_links = xs_stock(XSTYPE_DICT);
 696
 697    int c = 0;
 698    while (xs_list_next(p, &v, &c)) {
 699        const char *type  = xs_dict_get(v, "type");
 700        const char *name  = xs_dict_get(v, "name");
 701        const char *value = xs_dict_get(v, "value");
 702
 703        if (!xs_is_null(type) && !xs_is_null(name) &&
 704            !xs_is_null(value) && strcmp(type, "PropertyValue") == 0) {
 705            xs *val_date = NULL;
 706
 707            const char *url = xs_dict_get(metadata, name);
 708
 709            if (!xs_is_null(url) && xs_startswith(url, "https:/" "/")) {
 710                const xs_number *verified_time = xs_dict_get(val_links, url);
 711                if (xs_type(verified_time) == XSTYPE_NUMBER) {
 712                    time_t t = xs_number_get(verified_time);
 713
 714                    if (t > 0)
 715                        val_date = xs_str_utctime(t, ISO_DATE_SPEC);
 716                }
 717            }
 718
 719            xs *d = xs_dict_new();
 720
 721            d = xs_dict_append(d, "name", name);
 722            d = xs_dict_append(d, "value", value);
 723            d = xs_dict_append(d, "verified_at",
 724                xs_type(val_date) == XSTYPE_STRING && *val_date ?
 725                    val_date : xs_stock(XSTYPE_NULL));
 726
 727            fields = xs_list_append(fields, d);
 728        }
 729    }
 730
 731    user_free(&user);
 732
 733    acct = xs_dict_append(acct, "fields", fields);
 734
 735    return acct;
 736}
 737
 738
 739xs_str *mastoapi_date(const char *date)
 740/* converts an ISO 8601 date to whatever format Mastodon uses */
 741{
 742    xs_str *s = xs_crop_i(xs_dup(date), 0, 19);
 743    s = xs_str_cat(s, ".000Z");
 744
 745    return s;
 746}
 747
 748
 749xs_dict *mastoapi_poll(snac *snac, const xs_dict *msg)
 750/* creates a mastoapi Poll object */
 751{
 752    xs_dict *poll = xs_dict_new();
 753    xs *mid       = mastoapi_id(msg);
 754    const xs_list *opts = NULL;
 755    const xs_val *v;
 756    int num_votes = 0;
 757    xs *options = xs_list_new();
 758
 759    poll = xs_dict_append(poll, "id", mid);
 760    const char *date = xs_dict_get(msg, "endTime");
 761    if (date == NULL)
 762        date = xs_dict_get(msg, "closed");
 763    if (date == NULL)
 764        return NULL;
 765
 766    xs *fd = mastoapi_date(date);
 767    poll = xs_dict_append(poll, "expires_at", fd);
 768
 769    date = xs_dict_get(msg, "closed");
 770    time_t t = 0;
 771
 772    if (date != NULL)
 773        t = xs_parse_iso_date(date, 0);
 774
 775    poll = xs_dict_append(poll, "expired",
 776            t < time(NULL) ? xs_stock(XSTYPE_FALSE) : xs_stock(XSTYPE_TRUE));
 777
 778    if ((opts = xs_dict_get(msg, "oneOf")) != NULL)
 779        poll = xs_dict_append(poll, "multiple", xs_stock(XSTYPE_FALSE));
 780    else {
 781        opts = xs_dict_get(msg, "anyOf");
 782        poll = xs_dict_append(poll, "multiple", xs_stock(XSTYPE_TRUE));
 783    }
 784
 785    int c = 0;
 786    while (xs_list_next(opts, &v, &c)) {
 787        const char *title   = xs_dict_get(v, "name");
 788        const char *replies = xs_dict_get(v, "replies");
 789
 790        if (title && replies) {
 791            const char *votes_count = xs_dict_get(replies, "totalItems");
 792
 793            if (xs_type(votes_count) == XSTYPE_NUMBER) {
 794                xs *d = xs_dict_new();
 795                d = xs_dict_append(d, "title",  title);
 796                d = xs_dict_append(d, "votes_count", votes_count);
 797
 798                options = xs_list_append(options, d);
 799                num_votes += xs_number_get(votes_count);
 800            }
 801        }
 802    }
 803
 804    poll = xs_dict_append(poll, "options", options);
 805    xs *vc = xs_number_new(num_votes);
 806    poll = xs_dict_append(poll, "votes_count", vc);
 807
 808    poll = xs_dict_append(poll, "emojis", xs_stock(XSTYPE_LIST));
 809
 810    poll = xs_dict_append(poll, "voted",
 811            (snac && was_question_voted(snac, xs_dict_get(msg, "id"))) ?
 812                xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
 813
 814    return poll;
 815}
 816
 817
 818xs_dict *mastoapi_status(snac *snac, const xs_dict *msg)
 819/* converts an ActivityPub note to a Mastodon status */
 820{
 821    xs *actor = NULL;
 822    actor_get_refresh(snac, get_atto(msg), &actor);
 823    const char *proxy = NULL;
 824
 825    /* if the author is not here, discard */
 826    if (actor == NULL)
 827        return NULL;
 828
 829    if (snac && xs_is_true(xs_dict_get(srv_config, "proxy_media")))
 830        proxy = snac->actor;
 831
 832    const char *type = xs_dict_get(msg, "type");
 833    const char *id   = xs_dict_get(msg, "id");
 834
 835    /* fail if it's not a valid actor */
 836    if (xs_is_null(type) || xs_is_null(id))
 837        return NULL;
 838
 839    xs *acct = mastoapi_account(snac, actor);
 840    if (acct == NULL)
 841        return NULL;
 842
 843    xs *idx = NULL;
 844    xs *ixc = NULL;
 845    const char *tmp;
 846    xs *mid  = mastoapi_id(msg);
 847
 848    xs_dict *st = xs_dict_new();
 849
 850    st = xs_dict_append(st, "id",           mid);
 851    st = xs_dict_append(st, "uri",          id);
 852    st = xs_dict_append(st, "url",          id);
 853    st = xs_dict_append(st, "account",      acct);
 854
 855    const char *published = xs_dict_get(msg, "published");
 856    xs *fd = NULL;
 857
 858    if (published)
 859        fd = mastoapi_date(published);
 860    else {
 861        xs *p = xs_str_iso_date(0);
 862        fd = mastoapi_date(p);
 863    }
 864
 865    st = xs_dict_append(st, "created_at", fd);
 866
 867    {
 868        const char *content = xs_dict_get(msg, "content");
 869        const char *name    = xs_dict_get(msg, "name");
 870        xs *s1 = NULL;
 871
 872        if (name && content)
 873            s1 = xs_fmt("%s<br><br>%s", name, content);
 874        else
 875        if (name)
 876            s1 = xs_dup(name);
 877        else
 878        if (content)
 879            s1 = xs_dup(content);
 880        else
 881            s1 = xs_str_new(NULL);
 882
 883        st = xs_dict_append(st, "content", s1);
 884    }
 885
 886    st = xs_dict_append(st, "visibility",
 887        is_msg_public(msg) ? "public" : "private");
 888
 889    tmp = xs_dict_get(msg, "sensitive");
 890    if (xs_is_null(tmp))
 891        tmp = xs_stock(XSTYPE_FALSE);
 892
 893    st = xs_dict_append(st, "sensitive",    tmp);
 894
 895    tmp = xs_dict_get(msg, "summary");
 896    if (xs_is_null(tmp))
 897        tmp = "";
 898
 899    st = xs_dict_append(st, "spoiler_text", tmp);
 900
 901    /* create the list of attachments */
 902    xs *attach = get_attachments(msg);
 903
 904    {
 905        xs_list *p = attach;
 906        const xs_dict *v;
 907
 908        xs *matt = xs_list_new();
 909
 910        while (xs_list_iter(&p, &v)) {
 911            const char *type = xs_dict_get(v, "type");
 912            const char *o_href = xs_dict_get(v, "href");
 913            const char *name = xs_dict_get(v, "name");
 914
 915            if (xs_match(type, "image/*|video/*|audio/*|Image|Video")) { /* */
 916                xs *matteid = xs_fmt("%s_%d", id, xs_list_len(matt));
 917                xs *href = make_url(o_href, proxy, 1);
 918
 919                xs *d = xs_dict_new();
 920
 921                d = xs_dict_append(d, "id",          matteid);
 922                d = xs_dict_append(d, "url",         href);
 923                d = xs_dict_append(d, "preview_url", href);
 924                d = xs_dict_append(d, "remote_url",  href);
 925                d = xs_dict_append(d, "description", name);
 926
 927                d = xs_dict_append(d, "type", (*type == 'v' || *type == 'V') ? "video" :
 928                                              (*type == 'a' || *type == 'A') ? "audio" : "image");
 929
 930                matt = xs_list_append(matt, d);
 931            }
 932        }
 933
 934        st = xs_dict_append(st, "media_attachments", matt);
 935    }
 936
 937    {
 938        xs *ml  = xs_list_new();
 939        xs *htl = xs_list_new();
 940        xs *eml = xs_list_new();
 941        const xs_list *tag = xs_dict_get(msg, "tag");
 942        int n = 0;
 943
 944        xs *tag_list = NULL;
 945
 946        if (xs_type(tag) == XSTYPE_DICT) {
 947            tag_list = xs_list_new();
 948            tag_list = xs_list_append(tag_list, tag);
 949        }
 950        else
 951        if (xs_type(tag) == XSTYPE_LIST)
 952            tag_list = xs_dup(tag);
 953        else
 954            tag_list = xs_list_new();
 955
 956        tag = tag_list;
 957        const xs_dict *v;
 958
 959        int c = 0;
 960        while (xs_list_next(tag, &v, &c)) {
 961            const char *type = xs_dict_get(v, "type");
 962
 963            if (xs_is_null(type))
 964                continue;
 965
 966            xs *d1 = xs_dict_new();
 967
 968            if (strcmp(type, "Mention") == 0) {
 969                const char *name = xs_dict_get(v, "name");
 970                const char *href = xs_dict_get(v, "href");
 971
 972                if (!xs_is_null(name) && !xs_is_null(href) &&
 973                    (snac == NULL || strcmp(href, snac->actor) != 0)) {
 974                    xs *nm = xs_strip_chars_i(xs_dup(name), "@");
 975
 976                    xs *id = xs_fmt("%d", n++);
 977                    d1 = xs_dict_append(d1, "id", id);
 978                    d1 = xs_dict_append(d1, "username", nm);
 979                    d1 = xs_dict_append(d1, "acct", nm);
 980                    d1 = xs_dict_append(d1, "url", href);
 981
 982                    ml = xs_list_append(ml, d1);
 983                }
 984            }
 985            else
 986            if (strcmp(type, "Hashtag") == 0) {
 987                const char *name = xs_dict_get(v, "name");
 988                const char *href = xs_dict_get(v, "href");
 989
 990                if (!xs_is_null(name) && !xs_is_null(href)) {
 991                    xs *nm = xs_strip_chars_i(xs_dup(name), "#");
 992
 993                    d1 = xs_dict_append(d1, "name", nm);
 994                    d1 = xs_dict_append(d1, "url", href);
 995
 996                    htl = xs_list_append(htl, d1);
 997                }
 998            }
 999            else
1000            if (strcmp(type, "Emoji") == 0) {
1001                const char *name    = xs_dict_get(v, "name");
1002                const xs_dict *icon = xs_dict_get(v, "icon");
1003
1004                if (!xs_is_null(name) && !xs_is_null(icon)) {
1005                    const char *o_url = xs_dict_get(icon, "url");
1006
1007                    if (!xs_is_null(o_url)) {
1008                        xs *url = make_url(o_url, snac ? snac->actor : NULL, 1);
1009                        xs *nm = xs_strip_chars_i(xs_dup(name), ":");
1010
1011                        d1 = xs_dict_append(d1, "shortcode", nm);
1012                        d1 = xs_dict_append(d1, "url", url);
1013                        d1 = xs_dict_append(d1, "static_url", url);
1014                        d1 = xs_dict_append(d1, "visible_in_picker", xs_stock(XSTYPE_TRUE));
1015                        d1 = xs_dict_append(d1, "category", "Emojis");
1016
1017                        eml = xs_list_append(eml, d1);
1018                    }
1019                }
1020            }
1021        }
1022
1023        st = xs_dict_append(st, "mentions", ml);
1024        st = xs_dict_append(st, "tags",     htl);
1025        st = xs_dict_append(st, "emojis",   eml);
1026    }
1027
1028    xs_free(idx);
1029    xs_free(ixc);
1030    idx = object_likes(id);
1031    ixc = xs_number_new(xs_list_len(idx));
1032
1033    st = xs_dict_append(st, "favourites_count", ixc);
1034    st = xs_dict_append(st, "favourited",
1035        (snac && xs_list_in(idx, snac->md5) != -1) ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
1036
1037    xs_free(idx);
1038    xs_free(ixc);
1039    idx = object_announces(id);
1040    ixc = xs_number_new(xs_list_len(idx));
1041
1042    st = xs_dict_append(st, "reblogs_count", ixc);
1043    st = xs_dict_append(st, "reblogged",
1044        (snac && xs_list_in(idx, snac->md5) != -1) ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
1045
1046    /* get the last person who boosted this */
1047    xs *boosted_by_md5 = NULL;
1048    if (xs_list_len(idx))
1049        boosted_by_md5 = xs_dup(xs_list_get(idx, -1));
1050
1051    xs_free(idx);
1052    xs_free(ixc);
1053    idx = object_children(id);
1054    ixc = xs_number_new(xs_list_len(idx));
1055
1056    st = xs_dict_append(st, "replies_count", ixc);
1057
1058    /* default in_reply_to values */
1059    st = xs_dict_append(st, "in_reply_to_id",         xs_stock(XSTYPE_NULL));
1060    st = xs_dict_append(st, "in_reply_to_account_id", xs_stock(XSTYPE_NULL));
1061
1062    tmp = get_in_reply_to(msg);
1063    if (!xs_is_null(tmp)) {
1064        xs *irto = NULL;
1065
1066        if (valid_status(object_get(tmp, &irto))) {
1067            xs *irt_mid = mastoapi_id(irto);
1068            st = xs_dict_set(st, "in_reply_to_id", irt_mid);
1069
1070            const char *at = NULL;
1071            if (!xs_is_null(at = get_atto(irto))) {
1072                xs *at_md5 = xs_md5_hex(at, strlen(at));
1073                st = xs_dict_set(st, "in_reply_to_account_id", at_md5);
1074            }
1075        }
1076    }
1077
1078    st = xs_dict_append(st, "reblog",   xs_stock(XSTYPE_NULL));
1079    st = xs_dict_append(st, "card",     xs_stock(XSTYPE_NULL));
1080    st = xs_dict_append(st, "language", "en");
1081
1082    st = xs_dict_append(st, "filtered", xs_stock(XSTYPE_LIST));
1083    st = xs_dict_append(st, "muted",    xs_stock(XSTYPE_FALSE));
1084
1085    tmp = xs_dict_get(msg, "sourceContent");
1086    if (xs_is_null(tmp))
1087        tmp = "";
1088
1089    st = xs_dict_append(st, "text", tmp);
1090
1091    tmp = xs_dict_get(msg, "updated");
1092    xs *fd2 = NULL;
1093    if (xs_is_null(tmp))
1094        tmp = xs_stock(XSTYPE_NULL);
1095    else {
1096        fd2 = mastoapi_date(tmp);
1097        tmp = fd2;
1098    }
1099
1100    st = xs_dict_append(st, "edited_at", tmp);
1101
1102    if (strcmp(type, "Question") == 0) {
1103        xs *poll = mastoapi_poll(snac, msg);
1104        st = xs_dict_append(st, "poll", poll);
1105    }
1106    else
1107        st = xs_dict_append(st, "poll", xs_stock(XSTYPE_NULL));
1108
1109    st = xs_dict_append(st, "bookmarked",
1110        (snac && is_bookmarked(snac, id)) ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
1111
1112    st = xs_dict_append(st, "pinned",
1113        (snac && is_pinned(snac, id)) ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
1114
1115    /* is it a boost? */
1116    if (!xs_is_null(boosted_by_md5)) {
1117        /* create a new dummy status, using st as the 'reblog' field */
1118        xs_dict *bst = xs_dup(st);
1119        xs *b_actor = NULL;
1120
1121        if (valid_status(object_get_by_md5(boosted_by_md5, &b_actor))) {
1122            xs *b_acct   = mastoapi_account(snac, b_actor);
1123            xs *fake_uri = NULL;
1124
1125            if (snac)
1126                fake_uri = xs_fmt("%s/d/%s/Announce", snac->actor, mid);
1127            else
1128                fake_uri = xs_fmt("%s#%s", srv_baseurl, mid);
1129
1130            bst = xs_dict_set(bst, "uri", fake_uri);
1131            bst = xs_dict_set(bst, "url", fake_uri);
1132            bst = xs_dict_set(bst, "account", b_acct);
1133            bst = xs_dict_set(bst, "content", "");
1134            bst = xs_dict_set(bst, "reblog", st);
1135
1136            xs_free(st);
1137            st = bst;
1138        }
1139    }
1140
1141    return st;
1142}
1143
1144
1145xs_dict *mastoapi_relationship(snac *snac, const char *md5)
1146{
1147    xs_dict *rel = NULL;
1148    xs *actor_o  = NULL;
1149
1150    if (valid_status(object_get_by_md5(md5, &actor_o))) {
1151        rel = xs_dict_new();
1152
1153        const char *actor = xs_dict_get(actor_o, "id");
1154
1155        rel = xs_dict_append(rel, "id",                   md5);
1156        rel = xs_dict_append(rel, "following",
1157            following_check(snac, actor) ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
1158
1159        rel = xs_dict_append(rel, "showing_reblogs",      xs_stock(XSTYPE_TRUE));
1160        rel = xs_dict_append(rel, "notifying",            xs_stock(XSTYPE_FALSE));
1161        rel = xs_dict_append(rel, "followed_by",
1162            follower_check(snac, actor) ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
1163
1164        rel = xs_dict_append(rel, "blocking",
1165            is_muted(snac, actor) ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
1166
1167        rel = xs_dict_append(rel, "muting",               xs_stock(XSTYPE_FALSE));
1168        rel = xs_dict_append(rel, "muting_notifications", xs_stock(XSTYPE_FALSE));
1169        rel = xs_dict_append(rel, "requested",            xs_stock(XSTYPE_FALSE));
1170        rel = xs_dict_append(rel, "domain_blocking",      xs_stock(XSTYPE_FALSE));
1171        rel = xs_dict_append(rel, "endorsed",             xs_stock(XSTYPE_FALSE));
1172        rel = xs_dict_append(rel, "note",                 "");
1173    }
1174
1175    return rel;
1176}
1177
1178
1179int process_auth_token(snac *snac, const xs_dict *req)
1180/* processes an authorization token, if there is one */
1181{
1182    int logged_in = 0;
1183    const char *v;
1184
1185    /* if there is an authorization field, try to validate it */
1186    if (!xs_is_null(v = xs_dict_get(req, "authorization")) && xs_startswith(v, "Bearer ")) {
1187        xs *tokid = xs_replace_n(v, "Bearer ", "", 1);
1188        xs *token = token_get(tokid);
1189
1190        if (token != NULL) {
1191            const char *uid = xs_dict_get(token, "uid");
1192
1193            if (!xs_is_null(uid) && user_open(snac, uid)) {
1194                logged_in = 1;
1195
1196                /* this counts as a 'login' */
1197                lastlog_write(snac, "mastoapi");
1198
1199                srv_debug(2, xs_fmt("mastoapi auth: valid token for user '%s'", uid));
1200            }
1201            else
1202                srv_log(xs_fmt("mastoapi auth: corrupted token '%s'", tokid));
1203        }
1204        else
1205            srv_log(xs_fmt("mastoapi auth: invalid token '%s'", tokid));
1206    }
1207
1208    return logged_in;
1209}
1210
1211
1212void credentials_get(char **body, char **ctype, int *status, snac snac)
1213{
1214    xs *acct = xs_dict_new();
1215
1216    const xs_val *bot = xs_dict_get(snac.config, "bot");
1217
1218    acct = xs_dict_append(acct, "id", snac.md5);
1219    acct = xs_dict_append(acct, "username", xs_dict_get(snac.config, "uid"));
1220    acct = xs_dict_append(acct, "acct", xs_dict_get(snac.config, "uid"));
1221    acct = xs_dict_append(acct, "display_name", xs_dict_get(snac.config, "name"));
1222    acct = xs_dict_append(acct, "created_at", xs_dict_get(snac.config, "published"));
1223    acct = xs_dict_append(acct, "last_status_at", xs_dict_get(snac.config, "published"));
1224    acct = xs_dict_append(acct, "note", xs_dict_get(snac.config, "bio"));
1225    acct = xs_dict_append(acct, "url", snac.actor);
1226    acct = xs_dict_append(acct, "locked", xs_stock(XSTYPE_FALSE));
1227    acct = xs_dict_append(acct, "bot", xs_stock(xs_is_true(bot) ? XSTYPE_TRUE : XSTYPE_FALSE));
1228    acct = xs_dict_append(acct, "emojis", xs_stock(XSTYPE_LIST));
1229
1230    xs *src = xs_json_loads("{\"privacy\":\"public\", \"language\":\"en\","
1231        "\"follow_requests_count\": 0,"
1232        "\"sensitive\":false,\"fields\":[],\"note\":\"\"}");
1233    /* some apps take the note from the source object */
1234    src = xs_dict_set(src, "note", xs_dict_get(snac.config, "bio"));
1235    src = xs_dict_set(src, "privacy", xs_type(xs_dict_get(snac.config, "private")) == XSTYPE_TRUE ? "private" : "public");
1236
1237    const xs_str *cw = xs_dict_get(snac.config, "cw");
1238    src = xs_dict_set(src, "sensitive",
1239        strcmp(cw, "open") == 0 ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
1240
1241    src = xs_dict_set(src, "bot", xs_stock(xs_is_true(bot) ? XSTYPE_TRUE : XSTYPE_FALSE));
1242
1243    xs *avatar = NULL;
1244    const char *av = xs_dict_get(snac.config, "avatar");
1245
1246    if (xs_is_null(av) || *av == '\0')
1247        avatar = xs_fmt("%s/susie.png", srv_baseurl);
1248    else
1249        avatar = xs_dup(av);
1250
1251    acct = xs_dict_append(acct, "avatar", avatar);
1252    acct = xs_dict_append(acct, "avatar_static", avatar);
1253
1254    xs *header = NULL;
1255    const char *hd = xs_dict_get(snac.config, "header");
1256
1257    if (!xs_is_null(hd))
1258        header = xs_dup(hd);
1259    else
1260        header = xs_str_new(NULL);
1261
1262    acct = xs_dict_append(acct, "header", header);
1263    acct = xs_dict_append(acct, "header_static", header);
1264
1265    const xs_dict *metadata = xs_dict_get(snac.config, "metadata");
1266    if (xs_type(metadata) == XSTYPE_DICT) {
1267        xs *fields = xs_list_new();
1268        const xs_str *k;
1269        const xs_str *v;
1270
1271        xs_dict *val_links = snac.links;
1272        if (xs_is_null(val_links))
1273            val_links = xs_stock(XSTYPE_DICT);
1274
1275        int c = 0;
1276        while (xs_dict_next(metadata, &k, &v, &c)) {
1277            xs *val_date = NULL;
1278
1279            const xs_number *verified_time = xs_dict_get(val_links, v);
1280            if (xs_type(verified_time) == XSTYPE_NUMBER) {
1281                time_t t = xs_number_get(verified_time);
1282
1283                if (t > 0)
1284                    val_date = xs_str_utctime(t, ISO_DATE_SPEC);
1285            }
1286
1287            xs *d = xs_dict_new();
1288
1289            d = xs_dict_append(d, "name", k);
1290            d = xs_dict_append(d, "value", v);
1291            d = xs_dict_append(d, "verified_at",
1292                               xs_type(val_date) == XSTYPE_STRING && *val_date ? val_date : xs_stock(XSTYPE_NULL));
1293
1294            fields = xs_list_append(fields, d);
1295        }
1296
1297        acct = xs_dict_set(acct, "fields", fields);
1298        /* some apps take the fields from the source object */
1299        src = xs_dict_set(src, "fields", fields);
1300    }
1301
1302    acct = xs_dict_append(acct, "source", src);
1303    acct = xs_dict_append(acct, "followers_count", xs_stock(0));
1304    acct = xs_dict_append(acct, "following_count", xs_stock(0));
1305    acct = xs_dict_append(acct, "statuses_count", xs_stock(0));
1306
1307    /* does this user want to publish their contact metrics? */
1308    if (xs_is_true(xs_dict_get(snac.config, "show_contact_metrics"))) {
1309        xs *fwing = following_list(&snac);
1310        xs *fwers = follower_list(&snac);
1311        xs *ni = xs_number_new(xs_list_len(fwing));
1312        xs *ne = xs_number_new(xs_list_len(fwers));
1313
1314        acct = xs_dict_append(acct, "followers_count", ne);
1315        acct = xs_dict_append(acct, "following_count", ni);
1316    }
1317
1318    *body = xs_json_dumps(acct, 4);
1319    *ctype = "application/json";
1320    *status = HTTP_STATUS_OK;
1321}
1322
1323
1324xs_list *mastoapi_timeline(snac *user, const xs_dict *args, const char *index_fn)
1325{
1326    xs_list *out = xs_list_new();
1327    FILE *f;
1328    char md5[MD5_HEX_SIZE];
1329
1330    if (dbglevel) {
1331        xs *js = xs_json_dumps(args, 0);
1332        srv_debug(1, xs_fmt("mastoapi_timeline args %s", js));
1333    }
1334
1335    if ((f = fopen(index_fn, "r")) == NULL)
1336        return out;
1337
1338    const char *max_id   = xs_dict_get(args, "max_id");
1339    const char *since_id = xs_dict_get(args, "since_id");
1340    const char *min_id   = xs_dict_get(args, "min_id"); /* unsupported old-to-new navigation */
1341    const char *limit_s  = xs_dict_get(args, "limit");
1342    int limit = 0;
1343    int cnt   = 0;
1344
1345    if (!xs_is_null(limit_s))
1346        limit = atoi(limit_s);
1347
1348    if (limit == 0)
1349        limit = 20;
1350
1351    if (index_desc_first(f, md5, 0)) {
1352        do {
1353            xs *msg = NULL;
1354
1355            /* only return entries older that max_id */
1356            if (max_id) {
1357                if (strcmp(md5, MID_TO_MD5(max_id)) == 0)
1358                    max_id = NULL;
1359
1360                continue;
1361            }
1362
1363            /* only returns entries newer than since_id */
1364            if (since_id) {
1365                if (strcmp(md5, MID_TO_MD5(since_id)) == 0)
1366                    break;
1367            }
1368
1369            if (min_id) {
1370                if (strcmp(md5, MID_TO_MD5(min_id)) == 0)
1371                    break;
1372            }
1373
1374            /* get the entry */
1375            if (user) {
1376                if (!valid_status(timeline_get_by_md5(user, md5, &msg)))
1377                    continue;
1378            }
1379            else {
1380                if (!valid_status(object_get_by_md5(md5, &msg)))
1381                    continue;
1382            }
1383
1384            /* discard non-Notes */
1385            const char *id   = xs_dict_get(msg, "id");
1386            const char *type = xs_dict_get(msg, "type");
1387            if (!xs_match(type, POSTLIKE_OBJECT_TYPE))
1388                continue;
1389
1390            if (id && is_instance_blocked(id))
1391                continue;
1392
1393            const char *from = NULL;
1394            if (strcmp(type, "Page") == 0)
1395                from = xs_dict_get(msg, "audience");
1396
1397            if (from == NULL)
1398                from = get_atto(msg);
1399
1400            if (from == NULL)
1401                continue;
1402
1403            if (user) {
1404                /* is this message from a person we don't follow? */
1405                if (strcmp(from, user->actor) && !following_check(user, from)) {
1406                    /* discard if it was not boosted */
1407                    xs *idx = object_announces(id);
1408
1409                    if (xs_list_len(idx) == 0)
1410                        continue;
1411                }
1412
1413                /* discard notes from muted morons */
1414                if (is_muted(user, from))
1415                    continue;
1416
1417                /* discard hidden notes */
1418                if (is_hidden(user, id))
1419                    continue;
1420            }
1421            else {
1422                /* skip non-public messages */
1423                if (!is_msg_public(msg))
1424                    continue;
1425
1426                /* discard messages from private users */
1427                if (is_msg_from_private_user(msg))
1428                    continue;
1429            }
1430
1431            /* if it has a name and it's not a Page or a Video,
1432               it's a poll vote, so discard it */
1433            if (!xs_is_null(xs_dict_get(msg, "name")) && !xs_match(type, "Page|Video"))
1434                continue;
1435
1436            /* convert the Note into a Mastodon status */
1437            xs *st = mastoapi_status(user, msg);
1438
1439            if (st != NULL) {
1440                out = xs_list_append(out, st);
1441                cnt++;
1442            }
1443            if (min_id) {
1444                while (cnt > limit) {
1445                    out = xs_list_del(out, 0);
1446                    cnt--;
1447                }
1448            }
1449
1450        } while ((min_id || (cnt < limit)) && index_desc_next(f, md5));
1451    }
1452
1453    int more = index_desc_next(f, md5);
1454
1455    fclose(f);
1456
1457    srv_debug(1, xs_fmt("mastoapi_timeline ret %d%s", cnt, more ? " (+)" : ""));
1458
1459    return out;
1460}
1461
1462
1463xs_str *timeline_link_header(const char *endpoint, xs_list *timeline)
1464/* returns a Link header with paging information */
1465{
1466    xs_str *s = NULL;
1467
1468    if (xs_list_len(timeline) == 0)
1469        return NULL;
1470
1471    const xs_dict *first_st = xs_list_get(timeline, 0);
1472    const xs_dict *last_st  = xs_list_get(timeline, -1);
1473    const char *first_id    = xs_dict_get(first_st, "id");
1474    const char *last_id     = xs_dict_get(last_st, "id");
1475    const char *host        = xs_dict_get(srv_config, "host");
1476    const char *protocol    = xs_dict_get_def(srv_config, "protocol", "https");
1477
1478    s = xs_fmt(
1479        "<%s:/" "/%s%s?max_id=%s>; rel=\"next\", "
1480        "<%s:/" "/%s%s?since_id=%s>; rel=\"prev\"",
1481        protocol, host, endpoint, last_id,
1482        protocol, host, endpoint, first_id);
1483
1484    srv_debug(1, xs_fmt("timeline_link_header %s", s));
1485
1486    return s;
1487}
1488
1489
1490int mastoapi_get_handler(const xs_dict *req, const char *q_path,
1491                         char **body, int *b_size, char **ctype, xs_str **link)
1492{
1493    (void)b_size;
1494
1495    if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
1496        return 0;
1497
1498    int status    = HTTP_STATUS_NOT_FOUND;
1499    const xs_dict *args = xs_dict_get(req, "q_vars");
1500    xs *cmd       = xs_replace_n(q_path, "/api", "", 1);
1501
1502    snac snac1 = {0};
1503    int logged_in = process_auth_token(&snac1, req);
1504
1505    if (strcmp(cmd, "/v1/accounts/verify_credentials") == 0) { /** **/
1506        if (logged_in) {
1507            credentials_get(body, ctype, &status, snac1);
1508        }
1509        else {
1510            status = HTTP_STATUS_UNPROCESSABLE_CONTENT; // (no login)
1511        }
1512    }
1513    else
1514    if (strcmp(cmd, "/v1/accounts/relationships") == 0) { /** **/
1515        /* find if an account is followed, blocked, etc. */
1516        /* the account to get relationships about is in args "id[]" */
1517
1518        if (logged_in) {
1519            xs *res         = xs_list_new();
1520            const char *md5 = xs_dict_get(args, "id[]");
1521
1522            if (xs_is_null(md5))
1523                md5 = xs_dict_get(args, "id");
1524
1525            if (!xs_is_null(md5)) {
1526                if (xs_type(md5) == XSTYPE_LIST)
1527                    md5 = xs_list_get(md5, 0);
1528
1529                xs *rel = mastoapi_relationship(&snac1, md5);
1530
1531                if (rel != NULL)
1532                    res = xs_list_append(res, rel);
1533            }
1534
1535            *body  = xs_json_dumps(res, 4);
1536            *ctype = "application/json";
1537            status = HTTP_STATUS_OK;
1538        }
1539        else
1540            status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
1541    }
1542    else
1543    if (strcmp(cmd, "/v1/accounts/lookup") == 0) { /** **/
1544        /* lookup an account */
1545        const char *acct = xs_dict_get(args, "acct");
1546
1547        if (!xs_is_null(acct)) {
1548            xs *s = xs_strip_chars_i(xs_dup(acct), "@");
1549            xs *l = xs_split_n(s, "@", 1);
1550            const char *uid = xs_list_get(l, 0);
1551            const char *host = xs_list_get(l, 1);
1552
1553            if (uid && (!host || strcmp(host, xs_dict_get(srv_config, "host")) == 0)) {
1554                snac user;
1555
1556                if (user_open(&user, uid)) {
1557                    xs *actor = msg_actor(&user);
1558                    xs *macct = mastoapi_account(NULL, actor);
1559
1560                    *body  = xs_json_dumps(macct, 4);
1561                    *ctype = "application/json";
1562                    status = HTTP_STATUS_OK;
1563
1564                    user_free(&user);
1565                }
1566            }
1567        }
1568    }
1569    else
1570    if (xs_startswith(cmd, "/v1/accounts/")) { /** **/
1571        /* account-related information */
1572        xs *l = xs_split(cmd, "/");
1573        const char *uid = xs_list_get(l, 3);
1574        const char *opt = xs_list_get(l, 4);
1575
1576        if (uid != NULL) {
1577            snac snac2;
1578            xs *out   = NULL;
1579            xs *actor = NULL;
1580
1581            if (logged_in && strcmp(uid, "search") == 0) { /** **/
1582                /* search for accounts starting with q */
1583                const char *aq = xs_dict_get(args, "q");
1584
1585                if (!xs_is_null(aq)) {
1586                    xs *q    = xs_tolower_i(xs_dup(aq));
1587                    out      = xs_list_new();
1588                    xs *wing = following_list(&snac1);
1589                    xs *wers = follower_list(&snac1);
1590                    xs *ulst = user_list();
1591                    xs_list *p;
1592                    const xs_str *v;
1593                    xs_set seen;
1594
1595                    xs_set_init(&seen);
1596
1597                    /* user relations */
1598                    xs_list *lsts[] = { wing, wers, NULL };
1599                    int n;
1600                    for (n = 0; (p = lsts[n]) != NULL; n++) {
1601
1602                        while (xs_list_iter(&p, &v)) {
1603                            /* already seen? skip */
1604                            if (xs_set_add(&seen, v) == 0)
1605                                continue;
1606
1607                            xs *actor = NULL;
1608
1609                            if (valid_status(object_get(v, &actor))) {
1610                                const char *uname = xs_dict_get(actor, "preferredUsername");
1611
1612                                if (!xs_is_null(uname)) {
1613                                    xs *luname = xs_tolower_i(xs_dup(uname));
1614
1615                                    if (xs_startswith(luname, q)) {
1616                                        xs *acct = mastoapi_account(&snac1, actor);
1617
1618                                        out = xs_list_append(out, acct);
1619                                    }
1620                                }
1621                            }
1622                        }
1623                    }
1624
1625                    /* local users */
1626                    p = ulst;
1627                    while (xs_list_iter(&p, &v)) {
1628                        snac user;
1629
1630                        /* skip this same user */
1631                        if (strcmp(v, xs_dict_get(snac1.config, "uid")) == 0)
1632                            continue;
1633
1634                        /* skip if the uid does not start with the query */
1635                        xs *v2 = xs_tolower_i(xs_dup(v));
1636                        if (!xs_startswith(v2, q))
1637                            continue;
1638
1639                        if (user_open(&user, v)) {
1640                            /* if it's not already seen, add it */
1641                            if (xs_set_add(&seen, user.actor) == 1) {
1642                                xs *actor = msg_actor(&user);
1643                                xs *acct  = mastoapi_account(&snac1, actor);
1644
1645                                out = xs_list_append(out, acct);
1646                            }
1647
1648                            user_free(&user);
1649                        }
1650                    }
1651
1652                    xs_set_free(&seen);
1653                }
1654            }
1655            else
1656            /* is it a local user? */
1657            if (user_open(&snac2, uid) || user_open_by_md5(&snac2, uid)) {
1658                if (opt == NULL) {
1659                    /* account information */
1660                    actor = msg_actor(&snac2);
1661                    out   = mastoapi_account(NULL, actor);
1662                }
1663                else
1664                if (strcmp(opt, "statuses") == 0) { /** **/
1665                    /* the public list of posts of a user */
1666                    xs *timeline = timeline_simple_list(&snac2, "public", 0, 256);
1667                    xs_list *p   = timeline;
1668                    const xs_str *v;
1669
1670                    out = xs_list_new();
1671
1672                    while (xs_list_iter(&p, &v)) {
1673                        xs *msg = NULL;
1674
1675                        if (valid_status(timeline_get_by_md5(&snac2, v, &msg))) {
1676                            /* add only posts by the author */
1677                            if (strcmp(xs_dict_get(msg, "type"), "Note") == 0 &&
1678                                xs_startswith(xs_dict_get(msg, "id"), snac2.actor)) {
1679                                xs *st = mastoapi_status(&snac2, msg);
1680
1681                                if (st)
1682                                    out = xs_list_append(out, st);
1683                            }
1684                        }
1685                    }
1686                }
1687                else
1688                if (strcmp(opt, "featured_tags") == 0) {
1689                    /* snac doesn't have features tags, yet? */
1690                    /* implement empty response so apps like Tokodon don't show an error */
1691                    out = xs_list_new();
1692                }
1693                else
1694                if (strcmp(opt, "following") == 0) {
1695                    xs *wing = following_list(&snac1);
1696                    out = xs_list_new();
1697                    int c = 0;
1698                    const char *v;
1699
1700                    while (xs_list_next(wing, &v, &c)) {
1701                        xs *actor = NULL;
1702
1703                        if (valid_status(object_get(v, &actor))) {
1704                            xs *acct = mastoapi_account(NULL, actor);
1705                            out = xs_list_append(out, acct);
1706                        }
1707                    }
1708                }
1709                else
1710                if (strcmp(opt, "followers") == 0) {
1711                    out = xs_list_new();
1712                }
1713
1714                user_free(&snac2);
1715            }
1716            else {
1717                /* try the uid as the md5 of a possibly loaded actor */
1718                if (logged_in && valid_status(object_get_by_md5(uid, &actor))) {
1719                    if (opt == NULL) {
1720                        /* account information */
1721                        out = mastoapi_account(&snac1, actor);
1722                    }
1723                    else
1724                    if (strcmp(opt, "statuses") == 0) {
1725                        /* we don't serve statuses of others; return the empty list */ 
1726                        out = xs_list_new();
1727                    }
1728                    else
1729                    if (strcmp(opt, "featured_tags") == 0) {
1730                        /* snac doesn't have features tags, yet? */
1731                        /* implement empty response so apps like Tokodon don't show an error */
1732                        out = xs_list_new();
1733                    }
1734                }
1735            }
1736
1737            if (out != NULL) {
1738                *body  = xs_json_dumps(out, 4);
1739                *ctype = "application/json";
1740                status = HTTP_STATUS_OK;
1741            }
1742        }
1743    }
1744    else
1745    if (strcmp(cmd, "/v1/timelines/home") == 0) { /** **/
1746        /* the private timeline */
1747        if (logged_in) {
1748            xs *ifn = user_index_fn(&snac1, "private");
1749            xs *out = mastoapi_timeline(&snac1, args, ifn);
1750
1751            *link = timeline_link_header("/api/v1/timelines/home", out);
1752
1753            *body  = xs_json_dumps(out, 4);
1754            *ctype = "application/json";
1755            status = HTTP_STATUS_OK;
1756
1757            srv_debug(2, xs_fmt("mastoapi timeline: returned %d entries", xs_list_len(out)));
1758        }
1759        else {
1760            status = HTTP_STATUS_UNAUTHORIZED;
1761        }
1762    }
1763    else
1764    if (strcmp(cmd, "/v1/timelines/public") == 0) { /** **/
1765        /* the instance public timeline (public timelines for all users) */
1766        xs *ifn = instance_index_fn();
1767        xs *out = mastoapi_timeline(NULL, args, ifn);
1768
1769        *body  = xs_json_dumps(out, 4);
1770        *ctype = "application/json";
1771        status = HTTP_STATUS_OK;
1772    }
1773    else
1774    if (xs_startswith(cmd, "/v1/timelines/tag/")) { /** **/
1775        /* get the tag */
1776        xs *l = xs_split(cmd, "/");
1777        const char *tag = xs_list_get(l, -1);
1778
1779        xs *ifn = tag_fn(tag);
1780        xs *out = mastoapi_timeline(NULL, args, ifn);
1781
1782        *body  = xs_json_dumps(out, 4);
1783        *ctype = "application/json";
1784        status = HTTP_STATUS_OK;
1785    }
1786    else
1787    if (xs_startswith(cmd, "/v1/timelines/list/")) { /** **/
1788        /* get the list id */
1789        if (logged_in) {
1790            xs *l = xs_split(cmd, "/");
1791            const char *list = xs_list_get(l, -1);
1792
1793            xs *ifn = list_timeline_fn(&snac1, list);
1794            xs *out = mastoapi_timeline(NULL, args, ifn);
1795
1796            *body  = xs_json_dumps(out, 4);
1797            *ctype = "application/json";
1798            status = HTTP_STATUS_OK;
1799        }
1800        else
1801            status = HTTP_STATUS_MISDIRECTED_REQUEST;
1802    }
1803    else
1804    if (strcmp(cmd, "/v1/conversations") == 0) { /** **/
1805        /* TBD */
1806        *body  = xs_dup("[]");
1807        *ctype = "application/json";
1808        status = HTTP_STATUS_OK;
1809    }
1810    else
1811    if (strcmp(cmd, "/v1/notifications") == 0) { /** **/
1812        if (logged_in) {
1813            xs *l      = notify_list(&snac1, 0, 64);
1814            xs *out    = xs_list_new();
1815            const xs_dict *v;
1816            const xs_list *excl = xs_dict_get(args, "exclude_types[]");
1817            const char *min_id = xs_dict_get(args, "min_id");
1818            const char *max_id = xs_dict_get(args, "max_id");
1819
1820            if (dbglevel) {
1821                xs *js = xs_json_dumps(args, 0);
1822                srv_debug(1, xs_fmt("mastoapi_notifications args %s", js));
1823            }
1824
1825            xs_list_foreach(l, v) {
1826                xs *noti = notify_get(&snac1, v);
1827
1828                if (noti == NULL)
1829                    continue;
1830
1831                const char *type  = xs_dict_get(noti, "type");
1832                const char *utype = xs_dict_get(noti, "utype");
1833                const char *objid = xs_dict_get(noti, "objid");
1834                const char *id    = xs_dict_get(noti, "id");
1835                xs *fid = xs_replace(id, ".", "");
1836                xs *actor = NULL;
1837                xs *entry = NULL;
1838
1839                if (!valid_status(actor_get(xs_dict_get(noti, "actor"), &actor)))
1840                    continue;
1841
1842                if (objid != NULL && !valid_status(object_get(objid, &entry)))
1843                    continue;
1844
1845                if (is_hidden(&snac1, objid))
1846                    continue;
1847
1848                if (max_id) {
1849                    if (strcmp(fid, max_id) == 0)
1850                        max_id = NULL;
1851
1852                    continue;
1853                }
1854
1855                if (min_id) {
1856                    if (strcmp(fid, min_id) <= 0) {
1857                        continue;
1858                    }
1859                }
1860
1861                /* convert the type */
1862                if (strcmp(type, "Like") == 0 || strcmp(type, "EmojiReact") == 0)
1863                    type = "favourite";
1864                else
1865                if (strcmp(type, "Announce") == 0)
1866                    type = "reblog";
1867                else
1868                if (strcmp(type, "Follow") == 0)
1869                    type = "follow";
1870                else
1871                if (strcmp(type, "Create") == 0)
1872                    type = "mention";
1873                else
1874                if (strcmp(type, "Update") == 0 && strcmp(utype, "Question") == 0)
1875                    type = "poll";
1876                else
1877                    continue;
1878
1879                /* excluded type? */
1880                if (!xs_is_null(excl) && xs_list_in(excl, type) != -1)
1881                    continue;
1882
1883                xs *mn = xs_dict_new();
1884
1885                mn = xs_dict_append(mn, "type", type);
1886
1887                mn = xs_dict_append(mn, "id", fid);
1888
1889                mn = xs_dict_append(mn, "created_at", xs_dict_get(noti, "date"));
1890
1891                xs *acct = mastoapi_account(&snac1, actor);
1892
1893                if (acct == NULL)
1894                    continue;
1895
1896                mn = xs_dict_append(mn, "account", acct);
1897
1898                if (strcmp(type, "follow") != 0 && !xs_is_null(objid)) {
1899                    xs *st = mastoapi_status(&snac1, entry);
1900
1901                    if (st)
1902                        mn = xs_dict_append(mn, "status", st);
1903                }
1904
1905                out = xs_list_append(out, mn);
1906            }
1907
1908            srv_debug(1, xs_fmt("mastoapi_notifications count %d", xs_list_len(out)));
1909
1910            *body  = xs_json_dumps(out, 4);
1911            *ctype = "application/json";
1912            status = HTTP_STATUS_OK;
1913        }
1914        else
1915            status = HTTP_STATUS_UNAUTHORIZED;
1916    }
1917    else
1918    if (strcmp(cmd, "/v1/filters") == 0) { /** **/
1919        /* snac will never have filters */
1920        *body  = xs_dup("[]");
1921        *ctype = "application/json";
1922        status = HTTP_STATUS_OK;
1923    }
1924    else
1925    if (strcmp(cmd, "/v2/filters") == 0) { /** **/
1926        /* snac will never have filters 
1927         * but still, without a v2 endpoint a short delay is introduced
1928         * in some apps */
1929        *body  = xs_dup("[]");
1930        *ctype = "application/json";
1931        status = HTTP_STATUS_OK;
1932    }
1933    else
1934    if (strcmp(cmd, "/v1/favourites") == 0) { /** **/
1935        /* snac will never support a list of favourites */
1936        *body  = xs_dup("[]");
1937        *ctype = "application/json";
1938        status = HTTP_STATUS_OK;
1939    }
1940    else
1941    if (strcmp(cmd, "/v1/bookmarks") == 0) { /** **/
1942        if (logged_in) {
1943            xs *ifn = bookmark_index_fn(&snac1);
1944            xs *out = mastoapi_timeline(&snac1, args, ifn);
1945
1946            *body  = xs_json_dumps(out, 4);
1947            *ctype = "application/json";
1948            status = HTTP_STATUS_OK;
1949        }
1950        else
1951            status = HTTP_STATUS_UNAUTHORIZED;
1952    }
1953    else
1954    if (strcmp(cmd, "/v1/lists") == 0) { /** list of lists **/
1955        if (logged_in) {
1956            xs *lol = list_maint(&snac1, NULL, 0);
1957            xs *l   = xs_list_new();
1958            int c = 0;
1959            const xs_list *li;
1960
1961            while (xs_list_next(lol, &li, &c)) {
1962                xs *d = xs_dict_new();
1963
1964                d = xs_dict_append(d, "id", xs_list_get(li, 0));
1965                d = xs_dict_append(d, "title", xs_list_get(li, 1));
1966                d = xs_dict_append(d, "replies_policy", "list");
1967                d = xs_dict_append(d, "exclusive", xs_stock(XSTYPE_FALSE));
1968
1969                l = xs_list_append(l, d);
1970            }
1971
1972            *body  = xs_json_dumps(l, 4);
1973            *ctype = "application/json";
1974            status = HTTP_STATUS_OK;
1975        }
1976        else
1977            status = HTTP_STATUS_UNAUTHORIZED;
1978    }
1979    else
1980    if (xs_startswith(cmd, "/v1/lists/")) { /** list information **/
1981        if (logged_in) {
1982            xs *l = xs_split(cmd, "/");
1983            const char *p = xs_list_get(l, -1);
1984
1985            if (p) {
1986                if (strcmp(p, "accounts") == 0) {
1987                    p = xs_list_get(l, -2);
1988
1989                    if (p && xs_is_hex(p)) {
1990                        xs *actors = list_content(&snac1, p, NULL, 0);
1991                        xs *out = xs_list_new();
1992                        int c = 0;
1993                        const char *v;
1994
1995                        while (xs_list_next(actors, &v, &c)) {
1996                            xs *actor = NULL;
1997
1998                            if (valid_status(object_get_by_md5(v, &actor))) {
1999                                xs *acct = mastoapi_account(&snac1, actor);
2000                                out = xs_list_append(out, acct);
2001                            }
2002                        }
2003
2004                        *body  = xs_json_dumps(out, 4);
2005                        *ctype = "application/json";
2006                        status = HTTP_STATUS_OK;
2007                    }
2008                }
2009                else
2010                if (xs_is_hex(p)) {
2011                    xs *out = xs_list_new();
2012                    xs *lol = list_maint(&snac1, NULL, 0);
2013                    int c = 0;
2014                    const xs_list *v;
2015
2016                    while (xs_list_next(lol, &v, &c)) {
2017                        const char *id = xs_list_get(v, 0);
2018
2019                        if (id && strcmp(id, p) == 0) {
2020                            xs *d = xs_dict_new();
2021
2022                            d = xs_dict_append(d, "id", p);
2023                            d = xs_dict_append(d, "title", xs_list_get(v, 1));
2024                            d = xs_dict_append(d, "replies_policy", "list");
2025                            d = xs_dict_append(d, "exclusive", xs_stock(XSTYPE_FALSE));
2026
2027                            out = xs_dup(d);
2028                            break;
2029                        }
2030                    }
2031
2032                    *body  = xs_json_dumps(out, 4);
2033                    *ctype = "application/json";
2034                    status = HTTP_STATUS_OK;
2035                }
2036            }
2037        }
2038        else
2039            status = HTTP_STATUS_UNAUTHORIZED;
2040    }
2041    else
2042    if (strcmp(cmd, "/v1/scheduled_statuses") == 0) { /** **/
2043        /* snac does not schedule notes */
2044        *body  = xs_dup("[]");
2045        *ctype = "application/json";
2046        status = HTTP_STATUS_OK;
2047    }
2048    else
2049    if (strcmp(cmd, "/v1/follow_requests") == 0) { /** **/
2050        /* snac does not support optional follow confirmations */
2051        *body  = xs_dup("[]");
2052        *ctype = "application/json";
2053        status = HTTP_STATUS_OK;
2054    }
2055    else
2056    if (strcmp(cmd, "/v1/announcements") == 0) { /** **/
2057        if (logged_in) {
2058            xs *resp = xs_list_new();
2059            double la = 0.0;
2060            xs *user_la = xs_dup(xs_dict_get(snac1.config, "last_announcement"));
2061            if (user_la != NULL)
2062                la = xs_number_get(user_la);
2063            xs *val_date = xs_str_utctime(la, ISO_DATE_SPEC);
2064
2065            /* contrary to html, we always send the announcement and set the read flag instead */
2066
2067            const t_announcement *annce = announcement(la);
2068            if (annce != NULL && annce->text != NULL) {
2069                xs *an = xs_dict_new();
2070                xs *id = xs_fmt("%d", annce->timestamp);
2071                xs *ct = xs_fmt("<p>%s</p>", annce->text);
2072
2073                an = xs_dict_set(an, "id",           id);
2074                an = xs_dict_set(an, "content",      ct);
2075                an = xs_dict_set(an, "starts_at",    xs_stock(XSTYPE_NULL));
2076                an = xs_dict_set(an, "ends_at",      xs_stock(XSTYPE_NULL));
2077                an = xs_dict_set(an, "all_day",      xs_stock(XSTYPE_TRUE));
2078                an = xs_dict_set(an, "published_at", val_date);
2079                an = xs_dict_set(an, "updated_at",   val_date);
2080                an = xs_dict_set(an, "read",         (annce->timestamp >= la)
2081                    ? xs_stock(XSTYPE_FALSE) : xs_stock(XSTYPE_TRUE));
2082                an = xs_dict_set(an, "mentions",     xs_stock(XSTYPE_LIST));
2083                an = xs_dict_set(an, "statuses",     xs_stock(XSTYPE_LIST));
2084                an = xs_dict_set(an, "tags",         xs_stock(XSTYPE_LIST));
2085                an = xs_dict_set(an, "emojis",       xs_stock(XSTYPE_LIST));
2086                an = xs_dict_set(an, "reactions",    xs_stock(XSTYPE_LIST));
2087                resp = xs_list_append(resp, an);
2088            }
2089
2090            *body  = xs_json_dumps(resp, 4);
2091            *ctype = "application/json";
2092            status = HTTP_STATUS_OK;
2093        }
2094    }
2095    else
2096    if (strcmp(cmd, "/v1/custom_emojis") == 0) { /** **/
2097        /* are you kidding me? */
2098        *body  = xs_dup("[]");
2099        *ctype = "application/json";
2100        status = HTTP_STATUS_OK;
2101    }
2102    else
2103    if (strcmp(cmd, "/v1/instance") == 0) { /** **/
2104        /* returns an instance object */
2105        xs *ins = xs_dict_new();
2106        const char *host  = xs_dict_get(srv_config, "host");
2107        const char *title = xs_dict_get(srv_config, "title");
2108        const char *sdesc = xs_dict_get(srv_config, "short_description");
2109
2110        ins = xs_dict_append(ins, "uri",         host);
2111        ins = xs_dict_append(ins, "domain",      host);
2112        ins = xs_dict_append(ins, "title",       title && *title ? title : host);
2113        ins = xs_dict_append(ins, "version",     "4.0.0 (not true; really " USER_AGENT ")");
2114        ins = xs_dict_append(ins, "source_url",  WHAT_IS_SNAC_URL);
2115        ins = xs_dict_append(ins, "description", host);
2116
2117        ins = xs_dict_append(ins, "short_description", sdesc && *sdesc ? sdesc : host);
2118
2119        xs *susie = xs_fmt("%s/susie.png", srv_baseurl);
2120        ins = xs_dict_append(ins, "thumbnail", susie);
2121
2122        const char *v = xs_dict_get(srv_config, "admin_email");
2123        if (xs_is_null(v) || *v == '\0')
2124            v = "admin@localhost";
2125
2126        ins = xs_dict_append(ins, "email", v);
2127
2128        ins = xs_dict_append(ins, "rules", xs_stock(XSTYPE_LIST));
2129
2130        xs *l1 = xs_list_append(xs_list_new(), "en");
2131        ins = xs_dict_append(ins, "languages", l1);
2132
2133        xs *wss = xs_fmt("wss:/" "/%s", xs_dict_get(srv_config, "host"));
2134        xs *urls = xs_dict_new();
2135        urls = xs_dict_append(urls, "streaming_api", wss);
2136
2137        ins = xs_dict_append(ins, "urls", urls);
2138
2139        xs *d2 = xs_dict_append(xs_dict_new(), "user_count", xs_stock(0));
2140        d2 = xs_dict_append(d2, "status_count", xs_stock(0));
2141        d2 = xs_dict_append(d2, "domain_count", xs_stock(0));
2142        ins = xs_dict_append(ins, "stats", d2);
2143
2144        ins = xs_dict_append(ins, "registrations",     xs_stock(XSTYPE_FALSE));
2145        ins = xs_dict_append(ins, "approval_required", xs_stock(XSTYPE_FALSE));
2146        ins = xs_dict_append(ins, "invites_enabled",   xs_stock(XSTYPE_FALSE));
2147
2148        xs *cfg = xs_dict_new();
2149
2150        {
2151            xs *d11 = xs_json_loads("{\"characters_reserved_per_url\":32,"
2152                "\"max_characters\":100000,\"max_media_attachments\":8}");
2153            cfg = xs_dict_append(cfg, "statuses", d11);
2154
2155            xs *d12 = xs_json_loads("{\"max_featured_tags\":0}");
2156            cfg = xs_dict_append(cfg, "accounts", d12);
2157
2158            xs *d13 = xs_json_loads("{\"image_matrix_limit\":33177600,"
2159                        "\"image_size_limit\":16777216,"
2160                        "\"video_frame_rate_limit\":120,"
2161                        "\"video_matrix_limit\":8294400,"
2162                        "\"video_size_limit\":103809024}"
2163            );
2164
2165            {
2166                /* get the supported mime types from the internal list */
2167                const char **p = xs_mime_types;
2168                xs_set mtypes;
2169                xs_set_init(&mtypes);
2170
2171                while (*p) {
2172                    const char *type = p[1];
2173
2174                    if (xs_startswith(type, "image/") ||
2175                        xs_startswith(type, "video/") ||
2176                        xs_startswith(type, "audio/"))
2177                        xs_set_add(&mtypes, type);
2178
2179                    p += 2;
2180                }
2181
2182                xs *l = xs_set_result(&mtypes);
2183                d13 = xs_dict_append(d13, "supported_mime_types", l);
2184            }
2185
2186            cfg = xs_dict_append(cfg, "media_attachments", d13);
2187
2188            xs *d14 = xs_json_loads("{\"max_characters_per_option\":50,"
2189                "\"max_expiration\":2629746,"
2190                "\"max_options\":8,\"min_expiration\":300}");
2191            cfg = xs_dict_append(cfg, "polls", d14);
2192        }
2193
2194        ins = xs_dict_append(ins, "configuration", cfg);
2195
2196        const char *admin_account = xs_dict_get(srv_config, "admin_account");
2197
2198        if (!xs_is_null(admin_account) && *admin_account) {
2199            snac admin;
2200
2201            if (user_open(&admin, admin_account)) {
2202                xs *actor = msg_actor(&admin);
2203                xs *acct  = mastoapi_account(NULL, actor);
2204
2205                ins = xs_dict_append(ins, "contact_account", acct);
2206
2207                user_free(&admin);
2208            }
2209        }
2210
2211        *body  = xs_json_dumps(ins, 4);
2212        *ctype = "application/json";
2213        status = HTTP_STATUS_OK;
2214    }
2215    else
2216    if (xs_startswith(cmd, "/v1/statuses/")) { /** **/
2217        /* information about a status */
2218        if (logged_in) {
2219            xs *l = xs_split(cmd, "/");
2220            const char *id = xs_list_get(l, 3);
2221            const char *op = xs_list_get(l, 4);
2222
2223            if (!xs_is_null(id)) {
2224                xs *msg = NULL;
2225                xs *out = NULL;
2226
2227                /* skip the 'fake' part of the id */
2228                id = MID_TO_MD5(id);
2229
2230                if (valid_status(object_get_by_md5(id, &msg))) {
2231                    if (op == NULL) {
2232                        if (!is_muted(&snac1, get_atto(msg))) {
2233                            /* return the status itself */
2234                            out = mastoapi_status(&snac1, msg);
2235                        }
2236                    }
2237                    else
2238                    if (strcmp(op, "context") == 0) { /** **/
2239                        /* return ancestors and children */
2240                        xs *anc = xs_list_new();
2241                        xs *des = xs_list_new();
2242                        xs_list *p;
2243                        const xs_str *v;
2244                        char pid[MD5_HEX_SIZE];
2245
2246                        /* build the [grand]parent list, moving up */
2247                        strncpy(pid, id, sizeof(pid));
2248
2249                        while (object_parent(pid, pid)) {
2250                            xs *m2 = NULL;
2251
2252                            if (valid_status(timeline_get_by_md5(&snac1, pid, &m2))) {
2253                                xs *st = mastoapi_status(&snac1, m2);
2254
2255                                if (st)
2256                                    anc = xs_list_insert(anc, 0, st);
2257                            }
2258                            else
2259                                break;
2260                        }
2261
2262                        /* build the children list */
2263                        xs *children = object_children(xs_dict_get(msg, "id"));
2264                        p = children;
2265
2266                        while (xs_list_iter(&p, &v)) {
2267                            xs *m2 = NULL;
2268
2269                            if (valid_status(timeline_get_by_md5(&snac1, v, &m2))) {
2270                                if (xs_is_null(xs_dict_get(m2, "name"))) {
2271                                    xs *st = mastoapi_status(&snac1, m2);
2272
2273                                    if (st)
2274                                        des = xs_list_append(des, st);
2275                                }
2276                            }
2277                        }
2278
2279                        out = xs_dict_new();
2280                        out = xs_dict_append(out, "ancestors",   anc);
2281                        out = xs_dict_append(out, "descendants", des);
2282                    }
2283                    else
2284                    if (strcmp(op, "reblogged_by") == 0 || /** **/
2285                        strcmp(op, "favourited_by") == 0) { /** **/
2286                        /* return the list of people who liked or boosted this */
2287                        out = xs_list_new();
2288
2289                        xs *l = NULL;
2290
2291                        if (op[0] == 'r')
2292                            l = object_announces(xs_dict_get(msg, "id"));
2293                        else
2294                            l = object_likes(xs_dict_get(msg, "id"));
2295
2296                        xs_list *p = l;
2297                        const xs_str *v;
2298
2299                        while (xs_list_iter(&p, &v)) {
2300                            xs *actor2 = NULL;
2301
2302                            if (valid_status(object_get_by_md5(v, &actor2))) {
2303                                xs *acct2 = mastoapi_account(&snac1, actor2);
2304
2305                                out = xs_list_append(out, acct2);
2306                            }
2307                        }
2308                    }
2309                    else
2310                    if (strcmp(op, "source") == 0) { /** **/
2311                        out = xs_dict_new();
2312
2313                        /* get the mastoapi status id */
2314                        out = xs_dict_append(out, "id", xs_list_get(l, 3));
2315
2316                        out = xs_dict_append(out, "text", xs_dict_get(msg, "sourceContent"));
2317                        out = xs_dict_append(out, "spoiler_text", xs_dict_get(msg, "summary"));
2318                    }
2319                }
2320                else
2321                    srv_debug(1, xs_fmt("mastoapi status: bad id %s", id));
2322
2323                if (out != NULL) {
2324                    *body  = xs_json_dumps(out, 4);
2325                    *ctype = "application/json";
2326                    status = HTTP_STATUS_OK;
2327                }
2328            }
2329        }
2330        else
2331            status = HTTP_STATUS_UNAUTHORIZED;
2332    }
2333    else
2334    if (strcmp(cmd, "/v1/preferences") == 0) { /** **/
2335        *body  = xs_dup("{}");
2336        *ctype = "application/json";
2337        status = HTTP_STATUS_OK;
2338    }
2339    else
2340    if (strcmp(cmd, "/v1/markers") == 0) { /** **/
2341        if (logged_in) {
2342            const xs_list *timeline = xs_dict_get(args, "timeline[]");
2343            xs_str *json = NULL;
2344            if (!xs_is_null(timeline)) 
2345                json = xs_json_dumps(markers_get(&snac1, timeline), 4);
2346
2347            if (!xs_is_null(json))
2348                *body = json;
2349            else
2350                *body = xs_dup("{}");
2351
2352            *ctype = "application/json";
2353            status = HTTP_STATUS_OK;
2354        }
2355        else
2356            status = HTTP_STATUS_UNAUTHORIZED;
2357    }
2358    else
2359    if (strcmp(cmd, "/v1/followed_tags") == 0) { /** **/
2360        *body  = xs_dup("[]");
2361        *ctype = "application/json";
2362        status = HTTP_STATUS_OK;
2363    }
2364    else
2365    if (strcmp(cmd, "/v1/trends/tags") == 0) { /** **/
2366        *body  = xs_dup("[]");
2367        *ctype = "application/json";
2368        status = HTTP_STATUS_OK;
2369    }
2370    else
2371    if (strcmp(cmd, "/v1/trends/statuses") == 0) { /** **/
2372        *body  = xs_dup("[]");
2373        *ctype = "application/json";
2374        status = HTTP_STATUS_OK;
2375    }
2376    else
2377    if (strcmp(cmd, "/v2/search") == 0) { /** **/
2378        if (logged_in) {
2379            const char *q      = xs_dict_get(args, "q");
2380            const char *type   = xs_dict_get(args, "type");
2381            const char *offset = xs_dict_get(args, "offset");
2382
2383            xs *acl = xs_list_new();
2384            xs *stl = xs_list_new();
2385            xs *htl = xs_list_new();
2386            xs *res = xs_dict_new();
2387
2388            if (xs_is_null(offset) || strcmp(offset, "0") == 0) {
2389                /* reply something only for offset 0; otherwise,
2390                   apps like Tusky keep asking again and again */
2391                if (xs_startswith(q, "https://")) {
2392                    xs *md5 = xs_md5_hex(q, strlen(q));
2393
2394                    if (!timeline_here(&snac1, md5)) {
2395                        xs *object = NULL;
2396                        int status;
2397
2398                        status = activitypub_request(&snac1, q, &object);
2399                        snac_debug(&snac1, 1, xs_fmt("Request searched URL %s %d", q, status));
2400
2401                        if (valid_status(status)) {
2402                            /* got it; also request the actor */
2403                            const char *attr_to = get_atto(object);
2404                            xs *actor_obj = NULL;
2405
2406                            if (!xs_is_null(attr_to)) {
2407                                status = actor_request(&snac1, attr_to, &actor_obj);
2408
2409                                snac_debug(&snac1, 1, xs_fmt("Request author %s of %s %d", attr_to, q, status));
2410
2411                                if (valid_status(status)) {
2412                                    /* add the actor */
2413                                    actor_add(attr_to, actor_obj);
2414
2415                                    /* add the post to the timeline */
2416                                    timeline_add(&snac1, q, object);
2417                                }
2418                            }
2419                        }
2420                    }
2421                }
2422
2423                if (!xs_is_null(q)) {
2424                    if (xs_is_null(type) || strcmp(type, "accounts") == 0) {
2425                        /* do a webfinger query */
2426                        char *actor = NULL;
2427                        char *user  = NULL;
2428
2429                        if (valid_status(webfinger_request(q, &actor, &user)) && actor) {
2430                            xs *actor_o = NULL;
2431
2432                            if (valid_status(actor_request(&snac1, actor, &actor_o))) {
2433                                xs *acct = mastoapi_account(NULL, actor_o);
2434
2435                                acl = xs_list_append(acl, acct);
2436
2437                                if (!object_here(actor))
2438                                    object_add(actor, actor_o);
2439                            }
2440                        }
2441                    }
2442
2443                    if (xs_is_null(type) || strcmp(type, "hashtags") == 0) {
2444                        /* search this tag */
2445                        xs *tl = tag_search((char *)q, 0, 1);
2446
2447                        if (xs_list_len(tl)) {
2448                            xs *d = xs_dict_new();
2449
2450                            d = xs_dict_append(d, "name", q);
2451                            xs *url = xs_fmt("%s?t=%s", srv_baseurl, q);
2452                            d = xs_dict_append(d, "url", url);
2453                            d = xs_dict_append(d, "history", xs_stock(XSTYPE_LIST));
2454
2455                            htl = xs_list_append(htl, d);
2456                        }
2457                    }
2458
2459                    if (xs_is_null(type) || strcmp(type, "statuses") == 0) {
2460                        int to = 0;
2461                        int cnt = 40;
2462                        xs *tl = content_search(&snac1, q, 1, 0, cnt, 0, &to);
2463                        int c = 0;
2464                        const char *v;
2465
2466                        while (xs_list_next(tl, &v, &c) && --cnt) {
2467                            xs *post = NULL;
2468
2469                            if (!valid_status(timeline_get_by_md5(&snac1, v, &post)))
2470                                continue;
2471
2472                            xs *s = mastoapi_status(&snac1, post);
2473
2474                            if (!xs_is_null(s))
2475                                stl = xs_list_append(stl, s);
2476                        }
2477                    }
2478                }
2479            }
2480
2481            res = xs_dict_append(res, "accounts", acl);
2482            res = xs_dict_append(res, "statuses", stl);
2483            res = xs_dict_append(res, "hashtags", htl);
2484
2485            *body  = xs_json_dumps(res, 4);
2486            *ctype = "application/json";
2487            status = HTTP_STATUS_OK;
2488        }
2489        else
2490            status = HTTP_STATUS_UNAUTHORIZED;
2491    }
2492
2493    /* user cleanup */
2494    if (logged_in)
2495        user_free(&snac1);
2496
2497    srv_debug(1, xs_fmt("mastoapi_get_handler %s %d", q_path, status));
2498
2499    return status;
2500}
2501
2502
2503int mastoapi_post_handler(const xs_dict *req, const char *q_path,
2504                          const char *payload, int p_size,
2505                          char **body, int *b_size, char **ctype)
2506{
2507    (void)p_size;
2508    (void)b_size;
2509
2510    if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
2511        return 0;
2512
2513    int status    = HTTP_STATUS_NOT_FOUND;
2514    xs *args      = NULL;
2515    const char *i_ctype = xs_dict_get(req, "content-type");
2516
2517    if (i_ctype && xs_startswith(i_ctype, "application/json")) {
2518        if (!xs_is_null(payload))
2519            args = xs_json_loads(payload);
2520    }
2521    else if (i_ctype && xs_startswith(i_ctype, "application/x-www-form-urlencoded"))
2522    {
2523        // Some apps send form data instead of json so we should cater for those
2524        if (!xs_is_null(payload)) {
2525            args    = xs_url_vars(payload);
2526        }
2527    }
2528    else
2529        args = xs_dup(xs_dict_get(req, "p_vars"));
2530
2531    if (args == NULL)
2532        return HTTP_STATUS_BAD_REQUEST;
2533
2534    xs *cmd = xs_replace_n(q_path, "/api", "", 1);
2535
2536    snac snac = {0};
2537    int logged_in = process_auth_token(&snac, req);
2538
2539    if (strcmp(cmd, "/v1/apps") == 0) { /** **/
2540        const char *name  = xs_dict_get(args, "client_name");
2541        const char *ruri  = xs_dict_get(args, "redirect_uris");
2542        const char *scope = xs_dict_get(args, "scope");
2543
2544        /* Ice Cubes sends these values as query parameters, so try these */
2545        if (name == NULL && ruri == NULL && scope == NULL) {
2546            args = xs_dup(xs_dict_get(req, "q_vars"));
2547            name  = xs_dict_get(args, "client_name");
2548            ruri  = xs_dict_get(args, "redirect_uris");
2549            scope = xs_dict_get(args, "scope");
2550        }
2551
2552        if (xs_type(ruri) == XSTYPE_LIST)
2553            ruri = xs_dict_get(ruri, 0);
2554
2555        if (name && ruri) {
2556            xs *app  = xs_dict_new();
2557            xs *id   = xs_replace_i(tid(0), ".", "");
2558            xs *csec = random_str();
2559            xs *vkey = random_str();
2560            xs *cid  = NULL;
2561
2562            /* pick a non-existent random cid */
2563            for (;;) {
2564                cid = random_str();
2565                xs *p_app = app_get(cid);
2566
2567                if (p_app == NULL)
2568                    break;
2569
2570                xs_free(cid);
2571            }
2572
2573            app = xs_dict_append(app, "name",          name);
2574            app = xs_dict_append(app, "redirect_uri",  ruri);
2575            app = xs_dict_append(app, "client_id",     cid);
2576            app = xs_dict_append(app, "client_secret", csec);
2577            app = xs_dict_append(app, "vapid_key",     vkey);
2578            app = xs_dict_append(app, "id",            id);
2579
2580            *body  = xs_json_dumps(app, 4);
2581            *ctype = "application/json";
2582            status = HTTP_STATUS_OK;
2583
2584            app = xs_dict_append(app, "code", "");
2585
2586            if (scope)
2587                app = xs_dict_append(app, "scope", scope);
2588
2589            app_add(cid, app);
2590
2591            srv_debug(1, xs_fmt("mastoapi apps: new app %s", cid));
2592        }
2593    }
2594    else
2595    if (strcmp(cmd, "/v1/statuses") == 0) { /** **/
2596        if (logged_in) {
2597            /* post a new Note */
2598            const char *content    = xs_dict_get(args, "status");
2599            const char *mid        = xs_dict_get(args, "in_reply_to_id");
2600            const char *visibility = xs_dict_get(args, "visibility");
2601            const char *summary    = xs_dict_get(args, "spoiler_text");
2602            const char *media_ids  = xs_dict_get(args, "media_ids");
2603            const char *language   = xs_dict_get(args, "language");
2604
2605            if (xs_is_null(media_ids))
2606                media_ids = xs_dict_get(args, "media_ids[]");
2607
2608            if (xs_is_null(media_ids))
2609                media_ids = xs_dict_get(args, "media_ids");
2610
2611            if (xs_is_null(visibility))
2612                visibility = "public";
2613
2614            xs *attach_list = xs_list_new();
2615            xs *irt         = NULL;
2616
2617            /* is it a reply? */
2618            if (mid != NULL) {
2619                xs *r_msg = NULL;
2620                const char *md5 = MID_TO_MD5(mid);
2621
2622                if (valid_status(object_get_by_md5(md5, &r_msg)))
2623                    irt = xs_dup(xs_dict_get(r_msg, "id"));
2624            }
2625
2626            /* does it have attachments? */
2627            if (!xs_is_null(media_ids)) {
2628                xs *mi = NULL;
2629
2630                if (xs_type(media_ids) == XSTYPE_LIST)
2631                    mi = xs_dup(media_ids);
2632                else {
2633                    mi = xs_list_new();
2634                    mi = xs_list_append(mi, media_ids);
2635                }
2636
2637                xs_list *p = mi;
2638                const xs_str *v;
2639
2640                while (xs_list_iter(&p, &v)) {
2641                    xs *l    = xs_list_new();
2642                    xs *url  = xs_fmt("%s/s/%s", snac.actor, v);
2643                    xs *desc = static_get_meta(&snac, v);
2644
2645                    l = xs_list_append(l, url);
2646                    l = xs_list_append(l, desc);
2647
2648                    attach_list = xs_list_append(attach_list, l);
2649                }
2650            }
2651
2652            /* prepare the message */
2653            xs *msg = msg_note(&snac, content, NULL, irt, attach_list,
2654                        strcmp(visibility, "public") == 0 ? 0 : 1, language);
2655
2656            if (!xs_is_null(summary) && *summary) {
2657                msg = xs_dict_set(msg, "sensitive", xs_stock(XSTYPE_TRUE));
2658                msg = xs_dict_set(msg, "summary",   summary);
2659            }
2660
2661            /* store */
2662            timeline_add(&snac, xs_dict_get(msg, "id"), msg);
2663
2664            /* 'Create' message */
2665            xs *c_msg = msg_create(&snac, msg);
2666            enqueue_message(&snac, c_msg);
2667
2668            timeline_touch(&snac);
2669
2670            /* convert to a mastodon status as a response code */
2671            xs *st = mastoapi_status(&snac, msg);
2672
2673            *body  = xs_json_dumps(st, 4);
2674            *ctype = "application/json";
2675            status = HTTP_STATUS_OK;
2676        }
2677        else
2678            status = HTTP_STATUS_UNAUTHORIZED;
2679    }
2680    else
2681    if (xs_startswith(cmd, "/v1/statuses")) { /** **/
2682        if (logged_in) {
2683            /* operations on a status */
2684            xs *l = xs_split(cmd, "/");
2685            const char *mid = xs_list_get(l, 3);
2686            const char *op  = xs_list_get(l, 4);
2687
2688            if (!xs_is_null(mid)) {
2689                xs *msg = NULL;
2690                xs *out = NULL;
2691
2692                /* skip the 'fake' part of the id */
2693                mid = MID_TO_MD5(mid);
2694
2695                if (valid_status(timeline_get_by_md5(&snac, mid, &msg))) {
2696                    const char *id = xs_dict_get(msg, "id");
2697
2698                    if (op == NULL) {
2699                        /* no operation (?) */
2700                    }
2701                    else
2702                    if (strcmp(op, "favourite") == 0) { /** **/
2703                        xs *n_msg = msg_admiration(&snac, id, "Like");
2704
2705                        if (n_msg != NULL) {
2706                            enqueue_message(&snac, n_msg);
2707                            timeline_admire(&snac, xs_dict_get(n_msg, "object"), snac.actor, 1);
2708
2709                            out = mastoapi_status(&snac, msg);
2710                        }
2711                    }
2712                    else
2713                    if (strcmp(op, "unfavourite") == 0) { /** **/
2714                        xs *n_msg = msg_repulsion(&snac, id, "Like");
2715
2716                        if (n_msg != NULL) {
2717                            enqueue_message(&snac, n_msg);
2718
2719                            out = mastoapi_status(&snac, msg);
2720                        }
2721                    }
2722                    else
2723                    if (strcmp(op, "reblog") == 0) { /** **/
2724                        xs *n_msg = msg_admiration(&snac, id, "Announce");
2725
2726                        if (n_msg != NULL) {
2727                            enqueue_message(&snac, n_msg);
2728                            timeline_admire(&snac, xs_dict_get(n_msg, "object"), snac.actor, 0);
2729
2730                            out = mastoapi_status(&snac, msg);
2731                        }
2732                    }
2733                    else
2734                    if (strcmp(op, "unreblog") == 0) { /** **/
2735                        xs *n_msg = msg_repulsion(&snac, id, "Announce");
2736
2737                        if (n_msg != NULL) {
2738                            enqueue_message(&snac, n_msg);
2739
2740                            out = mastoapi_status(&snac, msg);
2741                        }
2742                    }
2743                    else
2744                    if (strcmp(op, "bookmark") == 0) { /** **/
2745                        /* bookmark this message */
2746                        if (bookmark(&snac, id) == 0)
2747                            out = mastoapi_status(&snac, msg);
2748                        else
2749                            status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
2750                    }
2751                    else
2752                    if (strcmp(op, "unbookmark") == 0) { /** **/
2753                        /* unbookmark this message */
2754                        unbookmark(&snac, id);
2755                        out = mastoapi_status(&snac, msg);
2756                    }
2757                    else
2758                    if (strcmp(op, "pin") == 0) { /** **/
2759                        /* pin this message */
2760                        if (pin(&snac, id) == 0)
2761                            out = mastoapi_status(&snac, msg);
2762                        else
2763                            status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
2764                    }
2765                    else
2766                    if (strcmp(op, "unpin") == 0) { /** **/
2767                        /* unpin this message */
2768                        unpin(&snac, id);
2769                        out = mastoapi_status(&snac, msg);
2770                    }
2771                    else
2772                    if (strcmp(op, "mute") == 0) { /** **/
2773                        /* Mastodon's mute is snac's hide */
2774                    }
2775                    else
2776                    if (strcmp(op, "unmute") == 0) { /** **/
2777                        /* Mastodon's unmute is snac's unhide */
2778                    }
2779                }
2780
2781                if (out != NULL) {
2782                    *body  = xs_json_dumps(out, 4);
2783                    *ctype = "application/json";
2784                    status = HTTP_STATUS_OK;
2785                }
2786            }
2787        }
2788        else
2789            status = HTTP_STATUS_UNAUTHORIZED;
2790    }
2791    else
2792    if (strcmp(cmd, "/v1/notifications/clear") == 0) { /** **/
2793        if (logged_in) {
2794            notify_clear(&snac);
2795            timeline_touch(&snac);
2796
2797            *body  = xs_dup("{}");
2798            *ctype = "application/json";
2799            status = HTTP_STATUS_OK;
2800        }
2801        else
2802            status = HTTP_STATUS_UNAUTHORIZED;
2803    }
2804    else
2805    if (strcmp(cmd, "/v1/push/subscription") == 0) { /** **/
2806        /* I don't know what I'm doing */
2807        if (logged_in) {
2808            const char *v;
2809
2810            xs *wpush = xs_dict_new();
2811
2812            wpush = xs_dict_append(wpush, "id", "1");
2813
2814            v = xs_dict_get(args, "data");
2815            v = xs_dict_get(v, "alerts");
2816            wpush = xs_dict_append(wpush, "alerts", v);
2817
2818            v = xs_dict_get(args, "subscription");
2819            v = xs_dict_get(v, "endpoint");
2820            wpush = xs_dict_append(wpush, "endpoint", v);
2821
2822            xs *server_key = random_str();
2823            wpush = xs_dict_append(wpush, "server_key", server_key);
2824
2825            *body  = xs_json_dumps(wpush, 4);
2826            *ctype = "application/json";
2827            status = HTTP_STATUS_OK;
2828        }
2829        else
2830            status = HTTP_STATUS_UNAUTHORIZED;
2831    }
2832    else
2833    if (strcmp(cmd, "/v1/media") == 0 || strcmp(cmd, "/v2/media") == 0) { /** **/
2834        if (logged_in) {
2835            const xs_list *file = xs_dict_get(args, "file");
2836            const char *desc    = xs_dict_get(args, "description");
2837
2838            if (xs_is_null(desc))
2839                desc = "";
2840
2841            status = HTTP_STATUS_BAD_REQUEST;
2842
2843            if (xs_type(file) == XSTYPE_LIST) {
2844                const char *fn = xs_list_get(file, 0);
2845
2846                if (*fn != '\0') {
2847                    char *ext = strrchr(fn, '.');
2848                    xs *hash  = xs_md5_hex(fn, strlen(fn));
2849                    xs *id    = xs_fmt("%s%s", hash, ext);
2850                    xs *url   = xs_fmt("%s/s/%s", snac.actor, id);
2851                    int fo    = xs_number_get(xs_list_get(file, 1));
2852                    int fs    = xs_number_get(xs_list_get(file, 2));
2853
2854                    /* store */
2855                    static_put(&snac, id, payload + fo, fs);
2856                    static_put_meta(&snac, id, desc);
2857
2858                    /* prepare a response */
2859                    xs *rsp = xs_dict_new();
2860
2861                    rsp = xs_dict_append(rsp, "id",          id);
2862                    rsp = xs_dict_append(rsp, "type",        "image");
2863                    rsp = xs_dict_append(rsp, "url",         url);
2864                    rsp = xs_dict_append(rsp, "preview_url", url);
2865                    rsp = xs_dict_append(rsp, "remote_url",  url);
2866                    rsp = xs_dict_append(rsp, "description", desc);
2867
2868                    *body  = xs_json_dumps(rsp, 4);
2869                    *ctype = "application/json";
2870                    status = HTTP_STATUS_OK;
2871                }
2872            }
2873        }
2874        else
2875            status = HTTP_STATUS_UNAUTHORIZED;
2876    }
2877    else
2878    if (xs_startswith(cmd, "/v1/accounts")) { /** **/
2879        if (logged_in) {
2880            /* account-related information */
2881            xs *l = xs_split(cmd, "/");
2882            const char *md5 = xs_list_get(l, 3);
2883            const char *opt = xs_list_get(l, 4);
2884            xs *rsp = NULL;
2885
2886            if (!xs_is_null(md5) && *md5) {
2887                xs *actor_o = NULL;
2888
2889                if (xs_is_null(opt)) {
2890                    /* ? */
2891                }
2892                else
2893                if (strcmp(opt, "follow") == 0) { /** **/
2894                    if (valid_status(object_get_by_md5(md5, &actor_o))) {
2895                        const char *actor = xs_dict_get(actor_o, "id");
2896
2897                        xs *msg = msg_follow(&snac, actor);
2898
2899                        if (msg != NULL) {
2900                            /* reload the actor from the message, in may be different */
2901                            actor = xs_dict_get(msg, "object");
2902
2903                            following_add(&snac, actor, msg);
2904
2905                            enqueue_output_by_actor(&snac, msg, actor, 0);
2906
2907                            rsp = mastoapi_relationship(&snac, md5);
2908                        }
2909                    }
2910                }
2911                else
2912                if (strcmp(opt, "unfollow") == 0) { /** **/
2913                    if (valid_status(object_get_by_md5(md5, &actor_o))) {
2914                        const char *actor = xs_dict_get(actor_o, "id");
2915
2916                        /* get the following object */
2917                        xs *object = NULL;
2918
2919                        if (valid_status(following_get(&snac, actor, &object))) {
2920                            xs *msg = msg_undo(&snac, xs_dict_get(object, "object"));
2921
2922                            following_del(&snac, actor);
2923
2924                            enqueue_output_by_actor(&snac, msg, actor, 0);
2925
2926                            rsp = mastoapi_relationship(&snac, md5);
2927                        }
2928                    }
2929                }
2930                else
2931                if (strcmp(opt, "block") == 0) { /** **/
2932                    if (valid_status(object_get_by_md5(md5, &actor_o))) {
2933                        const char *actor = xs_dict_get(actor_o, "id");
2934
2935                        mute(&snac, actor);
2936
2937                        rsp = mastoapi_relationship(&snac, md5);
2938                    }
2939                }
2940                else
2941                if (strcmp(opt, "unblock") == 0) { /** **/
2942                    if (valid_status(object_get_by_md5(md5, &actor_o))) {
2943                        const char *actor = xs_dict_get(actor_o, "id");
2944
2945                        unmute(&snac, actor);
2946
2947                        rsp = mastoapi_relationship(&snac, md5);
2948                    }
2949                }
2950            }
2951
2952            if (rsp != NULL) {
2953                *body  = xs_json_dumps(rsp, 4);
2954                *ctype = "application/json";
2955                status = HTTP_STATUS_OK;
2956            }
2957        }
2958        else
2959            status = HTTP_STATUS_UNAUTHORIZED;
2960    }
2961    else
2962    if (xs_startswith(cmd, "/v1/polls")) { /** **/
2963        if (logged_in) {
2964            /* operations on a status */
2965            xs *l = xs_split(cmd, "/");
2966            const char *mid = xs_list_get(l, 3);
2967            const char *op  = xs_list_get(l, 4);
2968
2969            if (!xs_is_null(mid)) {
2970                xs *msg = NULL;
2971                xs *out = NULL;
2972
2973                /* skip the 'fake' part of the id */
2974                mid = MID_TO_MD5(mid);
2975
2976                if (valid_status(timeline_get_by_md5(&snac, mid, &msg))) {
2977                    const char *id   = xs_dict_get(msg, "id");
2978                    const char *atto = get_atto(msg);
2979
2980                    const xs_list *opts = xs_dict_get(msg, "oneOf");
2981                    if (opts == NULL)
2982                        opts = xs_dict_get(msg, "anyOf");
2983
2984                    if (op == NULL) {
2985                    }
2986                    else
2987                    if (strcmp(op, "votes") == 0) {
2988                        const xs_list *choices = xs_dict_get(args, "choices[]");
2989
2990                        if (xs_is_null(choices))
2991                            choices = xs_dict_get(args, "choices");
2992
2993                        if (xs_type(choices) == XSTYPE_LIST) {
2994                            const xs_str *v;
2995
2996                            int c = 0;
2997                            while (xs_list_next(choices, &v, &c)) {
2998                                int io           = atoi(v);
2999                                const xs_dict *o = xs_list_get(opts, io);
3000
3001                                if (o) {
3002                                    const char *name = xs_dict_get(o, "name");
3003
3004                                    xs *msg = msg_note(&snac, "", atto, (char *)id, NULL, 1, NULL);
3005                                    msg = xs_dict_append(msg, "name", name);
3006
3007                                    xs *c_msg = msg_create(&snac, msg);
3008                                    enqueue_message(&snac, c_msg);
3009                                    timeline_add(&snac, xs_dict_get(msg, "id"), msg);
3010                                }
3011                            }
3012
3013                            out = mastoapi_poll(&snac, msg);
3014                        }
3015                    }
3016                }
3017
3018                if (out != NULL) {
3019                    *body  = xs_json_dumps(out, 4);
3020                    *ctype = "application/json";
3021                    status = HTTP_STATUS_OK;
3022                }
3023            }
3024        }
3025        else
3026            status = HTTP_STATUS_UNAUTHORIZED;
3027    }
3028    else
3029    if (strcmp(cmd, "/v1/lists") == 0) {
3030        if (logged_in) {
3031            const char *title = xs_dict_get(args, "title");
3032
3033            if (xs_type(title) == XSTYPE_STRING) {
3034                /* add the list */
3035                xs *out = xs_dict_new();
3036                xs *lid = list_maint(&snac, title, 1);
3037
3038                if (!xs_is_null(lid)) {
3039                    out = xs_dict_append(out, "id", lid);
3040                    out = xs_dict_append(out, "title", title);
3041                    out = xs_dict_append(out, "replies_policy", xs_dict_get_def(args, "replies_policy", "list"));
3042                    out = xs_dict_append(out, "exclusive", xs_stock(XSTYPE_FALSE));
3043
3044                    status = HTTP_STATUS_OK;
3045                }
3046                else {
3047                    out = xs_dict_append(out, "error", "cannot create list");
3048                    status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
3049                }
3050
3051                *body  = xs_json_dumps(out, 4);
3052                *ctype = "application/json";
3053            }
3054            else
3055                status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
3056        }
3057    }
3058    else
3059    if (xs_startswith(cmd, "/v1/lists/")) { /** list maintenance **/
3060        if (logged_in) {
3061            xs *l = xs_split(cmd, "/");
3062            const char *op = xs_list_get(l, -1);
3063            const char *id = xs_list_get(l, -2);
3064
3065            if (op && id && xs_is_hex(id)) {
3066                if (strcmp(op, "accounts") == 0) {
3067                    const xs_list *accts = xs_dict_get(args, "account_ids[]");
3068
3069                    if (xs_is_null(accts))
3070                        accts = xs_dict_get(args, "account_ids");
3071
3072                    int c = 0;
3073                    const char *v;
3074
3075                    while (xs_list_next(accts, &v, &c)) {
3076                        list_content(&snac, id, v, 1);
3077                    }
3078
3079                    xs *out = xs_dict_new();
3080                    *body   = xs_json_dumps(out, 4);
3081                    *ctype  = "application/json";
3082                    status  = HTTP_STATUS_OK;
3083                }
3084            }
3085        }
3086    }
3087    else if (strcmp(cmd, "/v1/markers") == 0) { /** **/
3088        xs_str *json = NULL;
3089        if (logged_in) {
3090            const xs_str *home_marker = xs_dict_get(args, "home[last_read_id]");
3091            if (xs_is_null(home_marker)) {
3092                const xs_dict *home = xs_dict_get(args, "home");
3093                if (!xs_is_null(home))
3094                    home_marker = xs_dict_get(home, "last_read_id");
3095            }
3096            
3097            const xs_str *notify_marker = xs_dict_get(args, "notifications[last_read_id]");
3098            if (xs_is_null(notify_marker)) {
3099                const xs_dict *notify = xs_dict_get(args, "notifications");
3100                if (!xs_is_null(notify))
3101                    notify_marker = xs_dict_get(notify, "last_read_id");
3102            }
3103            json = xs_json_dumps(markers_set(&snac, home_marker, notify_marker), 4);
3104        }
3105        if (!xs_is_null(json))
3106            *body = json;
3107        else
3108            *body = xs_dup("{}");
3109
3110        *ctype = "application/json";
3111        status = HTTP_STATUS_OK;
3112    }
3113    else
3114        status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
3115
3116    /* user cleanup */
3117    if (logged_in)
3118        user_free(&snac);
3119
3120    srv_debug(1, xs_fmt("mastoapi_post_handler %s %d", q_path, status));
3121
3122    return status;
3123}
3124
3125
3126int mastoapi_delete_handler(const xs_dict *req, const char *q_path,
3127                          const char *payload, int p_size,
3128                          char **body, int *b_size, char **ctype)
3129{
3130    (void)p_size;
3131    (void)body;
3132    (void)b_size;
3133    (void)ctype;
3134
3135    if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
3136        return 0;
3137
3138    int status    = HTTP_STATUS_NOT_FOUND;
3139    xs *args      = NULL;
3140    const char *i_ctype = xs_dict_get(req, "content-type");
3141
3142    if (i_ctype && xs_startswith(i_ctype, "application/json")) {
3143        if (!xs_is_null(payload))
3144            args = xs_json_loads(payload);
3145    }
3146    else if (i_ctype && xs_startswith(i_ctype, "application/x-www-form-urlencoded"))
3147    {
3148        // Some apps send form data instead of json so we should cater for those
3149        if (!xs_is_null(payload)) {
3150            args = xs_url_vars(payload);
3151        }
3152    }
3153    else
3154        args = xs_dup(xs_dict_get(req, "p_vars"));
3155
3156    if (args == NULL)
3157        return HTTP_STATUS_BAD_REQUEST;
3158
3159    snac snac = {0};
3160    int logged_in = process_auth_token(&snac, req);
3161
3162    xs *cmd = xs_replace_n(q_path, "/api", "", 1);
3163
3164    if (xs_startswith(cmd, "/v1/push/subscription") || xs_startswith(cmd, "/v2/push/subscription")) { /** **/
3165        // pretend we deleted it, since it doesn't exist anyway
3166        status = HTTP_STATUS_OK;
3167    }
3168    else
3169    if (xs_startswith(cmd, "/v1/lists/")) {
3170        if (logged_in) {
3171            xs *l = xs_split(cmd, "/");
3172            const char *p = xs_list_get(l, -1);
3173
3174            if (p) {
3175                if (strcmp(p, "accounts") == 0) {
3176                    /* delete account from list */
3177                    p = xs_list_get(l, -2);
3178                    const xs_list *accts = xs_dict_get(args, "account_ids[]");
3179
3180                    if (xs_is_null(accts))
3181                        accts = xs_dict_get(args, "account_ids");
3182
3183                    int c = 0;
3184                    const char *v;
3185
3186                    while (xs_list_next(accts, &v, &c)) {
3187                        list_content(&snac, p, v, 2);
3188                    }
3189                }
3190                else {
3191                    /* delete list */
3192                    if (xs_is_hex(p)) {
3193                        list_maint(&snac, p, 2);
3194                    }
3195                }
3196            }
3197
3198            *ctype = "application/json";
3199            status = HTTP_STATUS_OK;
3200        }
3201        else
3202            status = HTTP_STATUS_UNAUTHORIZED;
3203    }
3204
3205    /* user cleanup */
3206    if (logged_in)
3207        user_free(&snac);
3208
3209    srv_debug(1, xs_fmt("mastoapi_delete_handler %s %d", q_path, status));
3210
3211    return status;
3212}
3213
3214
3215int mastoapi_put_handler(const xs_dict *req, const char *q_path,
3216                          const char *payload, int p_size,
3217                          char **body, int *b_size, char **ctype)
3218{
3219    (void)p_size;
3220    (void)b_size;
3221
3222    if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
3223        return 0;
3224
3225    int status    = HTTP_STATUS_NOT_FOUND;
3226    xs *args      = NULL;
3227    const char *i_ctype = xs_dict_get(req, "content-type");
3228
3229    if (i_ctype && xs_startswith(i_ctype, "application/json")) {
3230        if (!xs_is_null(payload))
3231            args = xs_json_loads(payload);
3232    }
3233    else
3234        args = xs_dup(xs_dict_get(req, "p_vars"));
3235
3236    if (args == NULL)
3237        return HTTP_STATUS_BAD_REQUEST;
3238
3239    xs *cmd = xs_replace_n(q_path, "/api", "", 1);
3240
3241    snac snac = {0};
3242    int logged_in = process_auth_token(&snac, req);
3243
3244    if (xs_startswith(cmd, "/v1/media") || xs_startswith(cmd, "/v2/media")) { /** **/
3245        if (logged_in) {
3246            xs *l = xs_split(cmd, "/");
3247            const char *stid = xs_list_get(l, 3);
3248
3249            if (!xs_is_null(stid)) {
3250                const char *desc = xs_dict_get(args, "description");
3251
3252                /* set the image metadata */
3253                static_put_meta(&snac, stid, desc);
3254
3255                /* prepare a response */
3256                xs *rsp = xs_dict_new();
3257                xs *url = xs_fmt("%s/s/%s", snac.actor, stid);
3258
3259                rsp = xs_dict_append(rsp, "id",          stid);
3260                rsp = xs_dict_append(rsp, "type",        "image");
3261                rsp = xs_dict_append(rsp, "url",         url);
3262                rsp = xs_dict_append(rsp, "preview_url", url);
3263                rsp = xs_dict_append(rsp, "remote_url",  url);
3264                rsp = xs_dict_append(rsp, "description", desc);
3265
3266                *body  = xs_json_dumps(rsp, 4);
3267                *ctype = "application/json";
3268                status = HTTP_STATUS_OK;
3269            }
3270        }
3271        else
3272            status = HTTP_STATUS_UNAUTHORIZED;
3273    }
3274    else
3275    if (xs_startswith(cmd, "/v1/statuses")) {
3276        if (logged_in) {
3277            xs *l = xs_split(cmd, "/");
3278            const char *mid = xs_list_get(l, 3);
3279
3280            if (!xs_is_null(mid)) {
3281                const char *md5 = MID_TO_MD5(mid);
3282                xs *rsp = NULL;
3283                xs *msg = NULL;
3284
3285                if (valid_status(timeline_get_by_md5(&snac, md5, &msg))) {
3286                    const char *content = xs_dict_get(args, "status");
3287                    xs *atls = xs_list_new();
3288                    xs *f_content = not_really_markdown(content, &atls, NULL);
3289
3290                    /* replace fields with new content */
3291                    msg = xs_dict_set(msg, "sourceContent", content);
3292                    msg = xs_dict_set(msg, "content", f_content);
3293
3294                    xs *updated = xs_str_utctime(0, ISO_DATE_SPEC);
3295                    msg = xs_dict_set(msg, "updated", updated);
3296
3297                    /* overwrite object, not updating the indexes */
3298                    object_add_ow(xs_dict_get(msg, "id"), msg);
3299
3300                    /* update message */
3301                    xs *c_msg = msg_update(&snac, msg);
3302
3303                    enqueue_message(&snac, c_msg);
3304
3305                    rsp = mastoapi_status(&snac, msg);
3306                }
3307
3308                if (rsp != NULL) {
3309                    *body  = xs_json_dumps(rsp, 4);
3310                    *ctype = "application/json";
3311                    status = HTTP_STATUS_OK;
3312                }
3313            }
3314        }
3315        else
3316            status = HTTP_STATUS_UNAUTHORIZED;
3317    }
3318
3319    /* user cleanup */
3320    if (logged_in)
3321        user_free(&snac);
3322
3323    srv_debug(1, xs_fmt("mastoapi_put_handler %s %d", q_path, status));
3324
3325    return status;
3326}
3327
3328void persist_image(const char *key, const xs_val *data, const char *payload, snac *snac)
3329/* Store header or avatar */
3330{
3331    if (data != NULL) {
3332        if (xs_type(data) == XSTYPE_LIST) {
3333            const char *fn = xs_list_get(data, 0);
3334
3335            if (fn && *fn) {
3336                const char *ext = strrchr(fn, '.');
3337
3338                /* Mona iOS sends always jpg as application/octet-stream with no filename */
3339                if (ext == NULL || strcmp(fn, key) == 0) {
3340                    ext = ".jpg";
3341                }
3342
3343                /* Make sure we have a unique file name, otherwise updated images will not be
3344                 * re-loaded by clients. */
3345                xs *rnd         = random_str();
3346                xs *hash        = xs_md5_hex(rnd, strlen(rnd));
3347                xs *id          = xs_fmt("%s%s", hash, ext);
3348                xs *url         = xs_fmt("%s/s/%s", snac->actor, id);
3349                int fo          = xs_number_get(xs_list_get(data, 1));
3350                int fs          = xs_number_get(xs_list_get(data, 2));
3351
3352                /* store */
3353                static_put(snac, id, payload + fo, fs);
3354
3355                snac->config = xs_dict_set(snac->config, key, url);
3356            }
3357        }
3358    }
3359}
3360
3361int mastoapi_patch_handler(const xs_dict *req, const char *q_path,
3362                          const char *payload, int p_size,
3363                          char **body, int *b_size, char **ctype)
3364/* Handle profile updates */
3365{
3366    (void)p_size;
3367    (void)b_size;
3368
3369    if (!xs_startswith(q_path, "/api/v1/"))
3370        return 0;
3371
3372    int status    = HTTP_STATUS_NOT_FOUND;
3373    xs *args      = NULL;
3374    const char *i_ctype = xs_dict_get(req, "content-type");
3375
3376    if (i_ctype && xs_startswith(i_ctype, "application/json")) {
3377        if (!xs_is_null(payload))
3378            args = xs_json_loads(payload);
3379    }
3380    else if (i_ctype && xs_startswith(i_ctype, "application/x-www-form-urlencoded"))
3381    {
3382        // Some apps send form data instead of json so we should cater for those
3383        if (!xs_is_null(payload)) {
3384            args    = xs_url_vars(payload);
3385        }
3386    }
3387    else
3388        args = xs_dup(xs_dict_get(req, "p_vars"));
3389
3390    if (args == NULL)
3391        return HTTP_STATUS_BAD_REQUEST;
3392
3393    xs *cmd = xs_replace_n(q_path, "/api", "", 1);
3394
3395    snac snac = {0};
3396    int logged_in = process_auth_token(&snac, req);
3397
3398    if (xs_startswith(cmd, "/v1/accounts/update_credentials")) {
3399        /* Update user profile fields */
3400        if (logged_in) {
3401            int c = 0;
3402            const xs_str *k;
3403            const xs_val *v;
3404            const xs_str *field_name = NULL;
3405            xs *new_fields = xs_dict_new();
3406            while (xs_dict_next(args, &k, &v, &c)) {
3407                if (strcmp(k, "display_name") == 0) {
3408                    if (v != NULL)
3409                        snac.config = xs_dict_set(snac.config, "name", v);
3410                }
3411                else
3412                if (strcmp(k, "note") == 0) {
3413                    if (v != NULL)
3414                        snac.config = xs_dict_set(snac.config, "bio", v);
3415                }
3416                else
3417                if (strcmp(k, "bot") == 0) {
3418                    if (v != NULL)
3419                        snac.config = xs_dict_set(snac.config, "bot",
3420                            (strcmp(v, "true") == 0 ||
3421                                strcmp(v, "1") == 0) ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
3422                }
3423                else
3424                if (strcmp(k, "source[sensitive]") == 0) {
3425                    if (v != NULL)
3426                        snac.config = xs_dict_set(snac.config, "cw",
3427                            strcmp(v, "true") == 0 ? "open" : "");
3428                }
3429                else
3430                if (strcmp(k, "source[privacy]") == 0) {
3431                    if (v != NULL)
3432                        snac.config = xs_dict_set(snac.config, "private",
3433                            strcmp(v, "private") == 0 ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
3434                }
3435                else
3436                if (strcmp(k, "header") == 0) {
3437                    persist_image("header", v, payload, &snac);
3438                }
3439                else
3440                if (strcmp(k, "avatar") == 0) {
3441                    persist_image("avatar", v, payload, &snac);
3442                }
3443                else
3444                if (xs_between("fields_attributes", k, "[name]")) {
3445                    field_name = strcmp(v, "") != 0 ? v : NULL;
3446                }
3447                else
3448                if (xs_between("fields_attributes", k, "[value]")) {
3449                    if (field_name != NULL) {
3450                        new_fields = xs_dict_set(new_fields, field_name, v);
3451                        snac.config = xs_dict_set(snac.config, "metadata", new_fields);
3452                    }
3453                }
3454                /* we don't have support for the following options, yet
3455                   - discoverable (0/1)
3456                   - locked (0/1)
3457                 */
3458            }
3459
3460            /* Persist profile */
3461            if (user_persist(&snac, 1) == 0)
3462                credentials_get(body, ctype, &status, snac);
3463            else
3464                status = HTTP_STATUS_INTERNAL_SERVER_ERROR;
3465        }
3466        else
3467            status = HTTP_STATUS_UNAUTHORIZED;
3468    }
3469
3470    /* user cleanup */
3471    if (logged_in)
3472        user_free(&snac);
3473
3474    srv_debug(1, xs_fmt("mastoapi_patch_handler %s %d", q_path, status));
3475
3476    return status;
3477}
3478
3479
3480void mastoapi_purge(void)
3481{
3482    xs *spec   = xs_fmt("%s/app/" "*.json", srv_basedir);
3483    xs *files  = xs_glob(spec, 1, 0);
3484    xs_list *p = files;
3485    const xs_str *v;
3486
3487    time_t mt = time(NULL) - 3600;
3488
3489    while (xs_list_iter(&p, &v)) {
3490        xs *cid = xs_replace(v, ".json", "");
3491        xs *fn  = _app_fn(cid);
3492
3493        if (mtime(fn) < mt) {
3494            /* get the app */
3495            xs *app = app_get(cid);
3496
3497            if (app) {
3498                /* old apps with no uid are incomplete cruft */
3499                const char *uid = xs_dict_get(app, "uid");
3500
3501                if (xs_is_null(uid) || *uid == '\0') {
3502                    unlink(fn);
3503                    srv_debug(2, xs_fmt("purged %s", fn));
3504                }
3505            }
3506        }
3507    }
3508}
3509
3510
3511#endif /* #ifndef NO_MASTODON_API */