2.67 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 (min_id == NULL && 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            /* get the entry */
1370            if (user) {
1371                if (!valid_status(timeline_get_by_md5(user, md5, &msg)))
1372                    continue;
1373            }
1374            else {
1375                if (!valid_status(object_get_by_md5(md5, &msg)))
1376                    continue;
1377            }
1378
1379            /* discard non-Notes */
1380            const char *id   = xs_dict_get(msg, "id");
1381            const char *type = xs_dict_get(msg, "type");
1382            if (!xs_match(type, POSTLIKE_OBJECT_TYPE))
1383                continue;
1384
1385            if (id && is_instance_blocked(id))
1386                continue;
1387
1388            const char *from = NULL;
1389            if (strcmp(type, "Page") == 0)
1390                from = xs_dict_get(msg, "audience");
1391
1392            if (from == NULL)
1393                from = get_atto(msg);
1394
1395            if (from == NULL)
1396                continue;
1397
1398            if (user) {
1399                /* is this message from a person we don't follow? */
1400                if (strcmp(from, user->actor) && !following_check(user, from)) {
1401                    /* discard if it was not boosted */
1402                    xs *idx = object_announces(id);
1403
1404                    if (xs_list_len(idx) == 0)
1405                        continue;
1406                }
1407
1408                /* discard notes from muted morons */
1409                if (is_muted(user, from))
1410                    continue;
1411
1412                /* discard hidden notes */
1413                if (is_hidden(user, id))
1414                    continue;
1415            }
1416            else {
1417                /* skip non-public messages */
1418                if (!is_msg_public(msg))
1419                    continue;
1420
1421                /* discard messages from private users */
1422                if (is_msg_from_private_user(msg))
1423                    continue;
1424            }
1425
1426            /* if it has a name and it's not a Page or a Video,
1427               it's a poll vote, so discard it */
1428            if (!xs_is_null(xs_dict_get(msg, "name")) && !xs_match(type, "Page|Video"))
1429                continue;
1430
1431            /* convert the Note into a Mastodon status */
1432            xs *st = mastoapi_status(user, msg);
1433
1434            if (st != NULL) {
1435                out = xs_list_append(out, st);
1436                cnt++;
1437            }
1438
1439        } while (cnt < limit && index_desc_next(f, md5));
1440    }
1441
1442    int more = index_desc_next(f, md5);
1443
1444    fclose(f);
1445
1446    srv_debug(1, xs_fmt("mastoapi_timeline ret %d%s", cnt, more ? " (+)" : ""));
1447
1448    return out;
1449}
1450
1451
1452xs_str *timeline_link_header(const char *endpoint, xs_list *timeline)
1453/* returns a Link header with paging information */
1454{
1455    xs_str *s = NULL;
1456
1457    if (xs_list_len(timeline) == 0)
1458        return NULL;
1459
1460    const xs_dict *first_st = xs_list_get(timeline, 0);
1461    const xs_dict *last_st  = xs_list_get(timeline, -1);
1462    const char *first_id    = xs_dict_get(first_st, "id");
1463    const char *last_id     = xs_dict_get(last_st, "id");
1464    const char *host        = xs_dict_get(srv_config, "host");
1465    const char *protocol    = xs_dict_get_def(srv_config, "protocol", "https");
1466
1467    s = xs_fmt(
1468        "<%s:/" "/%s%s?max_id=%s>; rel=\"next\", "
1469        "<%s:/" "/%s%s?since_id=%s>; rel=\"prev\"",
1470        protocol, host, endpoint, last_id,
1471        protocol, host, endpoint, first_id);
1472
1473    srv_debug(1, xs_fmt("timeline_link_header %s", s));
1474
1475    return s;
1476}
1477
1478
1479int mastoapi_get_handler(const xs_dict *req, const char *q_path,
1480                         char **body, int *b_size, char **ctype, xs_str **link)
1481{
1482    (void)b_size;
1483
1484    if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
1485        return 0;
1486
1487    int status    = HTTP_STATUS_NOT_FOUND;
1488    const xs_dict *args = xs_dict_get(req, "q_vars");
1489    xs *cmd       = xs_replace_n(q_path, "/api", "", 1);
1490
1491    snac snac1 = {0};
1492    int logged_in = process_auth_token(&snac1, req);
1493
1494    if (strcmp(cmd, "/v1/accounts/verify_credentials") == 0) { /** **/
1495        if (logged_in) {
1496            credentials_get(body, ctype, &status, snac1);
1497        }
1498        else {
1499            status = HTTP_STATUS_UNPROCESSABLE_CONTENT; // (no login)
1500        }
1501    }
1502    else
1503    if (strcmp(cmd, "/v1/accounts/relationships") == 0) { /** **/
1504        /* find if an account is followed, blocked, etc. */
1505        /* the account to get relationships about is in args "id[]" */
1506
1507        if (logged_in) {
1508            xs *res         = xs_list_new();
1509            const char *md5 = xs_dict_get(args, "id[]");
1510
1511            if (xs_is_null(md5))
1512                md5 = xs_dict_get(args, "id");
1513
1514            if (!xs_is_null(md5)) {
1515                if (xs_type(md5) == XSTYPE_LIST)
1516                    md5 = xs_list_get(md5, 0);
1517
1518                xs *rel = mastoapi_relationship(&snac1, md5);
1519
1520                if (rel != NULL)
1521                    res = xs_list_append(res, rel);
1522            }
1523
1524            *body  = xs_json_dumps(res, 4);
1525            *ctype = "application/json";
1526            status = HTTP_STATUS_OK;
1527        }
1528        else
1529            status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
1530    }
1531    else
1532    if (strcmp(cmd, "/v1/accounts/lookup") == 0) { /** **/
1533        /* lookup an account */
1534        const char *acct = xs_dict_get(args, "acct");
1535
1536        if (!xs_is_null(acct)) {
1537            xs *s = xs_strip_chars_i(xs_dup(acct), "@");
1538            xs *l = xs_split_n(s, "@", 1);
1539            const char *uid = xs_list_get(l, 0);
1540            const char *host = xs_list_get(l, 1);
1541
1542            if (uid && (!host || strcmp(host, xs_dict_get(srv_config, "host")) == 0)) {
1543                snac user;
1544
1545                if (user_open(&user, uid)) {
1546                    xs *actor = msg_actor(&user);
1547                    xs *macct = mastoapi_account(NULL, actor);
1548
1549                    *body  = xs_json_dumps(macct, 4);
1550                    *ctype = "application/json";
1551                    status = HTTP_STATUS_OK;
1552
1553                    user_free(&user);
1554                }
1555            }
1556        }
1557    }
1558    else
1559    if (xs_startswith(cmd, "/v1/accounts/")) { /** **/
1560        /* account-related information */
1561        xs *l = xs_split(cmd, "/");
1562        const char *uid = xs_list_get(l, 3);
1563        const char *opt = xs_list_get(l, 4);
1564
1565        if (uid != NULL) {
1566            snac snac2;
1567            xs *out   = NULL;
1568            xs *actor = NULL;
1569
1570            if (logged_in && strcmp(uid, "search") == 0) { /** **/
1571                /* search for accounts starting with q */
1572                const char *aq = xs_dict_get(args, "q");
1573
1574                if (!xs_is_null(aq)) {
1575                    xs *q    = xs_tolower_i(xs_dup(aq));
1576                    out      = xs_list_new();
1577                    xs *wing = following_list(&snac1);
1578                    xs *wers = follower_list(&snac1);
1579                    xs *ulst = user_list();
1580                    xs_list *p;
1581                    const xs_str *v;
1582                    xs_set seen;
1583
1584                    xs_set_init(&seen);
1585
1586                    /* user relations */
1587                    xs_list *lsts[] = { wing, wers, NULL };
1588                    int n;
1589                    for (n = 0; (p = lsts[n]) != NULL; n++) {
1590
1591                        while (xs_list_iter(&p, &v)) {
1592                            /* already seen? skip */
1593                            if (xs_set_add(&seen, v) == 0)
1594                                continue;
1595
1596                            xs *actor = NULL;
1597
1598                            if (valid_status(object_get(v, &actor))) {
1599                                const char *uname = xs_dict_get(actor, "preferredUsername");
1600
1601                                if (!xs_is_null(uname)) {
1602                                    xs *luname = xs_tolower_i(xs_dup(uname));
1603
1604                                    if (xs_startswith(luname, q)) {
1605                                        xs *acct = mastoapi_account(&snac1, actor);
1606
1607                                        out = xs_list_append(out, acct);
1608                                    }
1609                                }
1610                            }
1611                        }
1612                    }
1613
1614                    /* local users */
1615                    p = ulst;
1616                    while (xs_list_iter(&p, &v)) {
1617                        snac user;
1618
1619                        /* skip this same user */
1620                        if (strcmp(v, xs_dict_get(snac1.config, "uid")) == 0)
1621                            continue;
1622
1623                        /* skip if the uid does not start with the query */
1624                        xs *v2 = xs_tolower_i(xs_dup(v));
1625                        if (!xs_startswith(v2, q))
1626                            continue;
1627
1628                        if (user_open(&user, v)) {
1629                            /* if it's not already seen, add it */
1630                            if (xs_set_add(&seen, user.actor) == 1) {
1631                                xs *actor = msg_actor(&user);
1632                                xs *acct  = mastoapi_account(&snac1, actor);
1633
1634                                out = xs_list_append(out, acct);
1635                            }
1636
1637                            user_free(&user);
1638                        }
1639                    }
1640
1641                    xs_set_free(&seen);
1642                }
1643            }
1644            else
1645            /* is it a local user? */
1646            if (user_open(&snac2, uid) || user_open_by_md5(&snac2, uid)) {
1647                if (opt == NULL) {
1648                    /* account information */
1649                    actor = msg_actor(&snac2);
1650                    out   = mastoapi_account(NULL, actor);
1651                }
1652                else
1653                if (strcmp(opt, "statuses") == 0) { /** **/
1654                    /* the public list of posts of a user */
1655                    xs *timeline = timeline_simple_list(&snac2, "public", 0, 256);
1656                    xs_list *p   = timeline;
1657                    const xs_str *v;
1658
1659                    out = xs_list_new();
1660
1661                    while (xs_list_iter(&p, &v)) {
1662                        xs *msg = NULL;
1663
1664                        if (valid_status(timeline_get_by_md5(&snac2, v, &msg))) {
1665                            /* add only posts by the author */
1666                            if (strcmp(xs_dict_get(msg, "type"), "Note") == 0 &&
1667                                xs_startswith(xs_dict_get(msg, "id"), snac2.actor)) {
1668                                xs *st = mastoapi_status(&snac2, msg);
1669
1670                                if (st)
1671                                    out = xs_list_append(out, st);
1672                            }
1673                        }
1674                    }
1675                }
1676                else
1677                if (strcmp(opt, "featured_tags") == 0) {
1678                    /* snac doesn't have features tags, yet? */
1679                    /* implement empty response so apps like Tokodon don't show an error */
1680                    out = xs_list_new();
1681                }
1682                else
1683                if (strcmp(opt, "following") == 0) {
1684                    xs *wing = following_list(&snac1);
1685                    out = xs_list_new();
1686                    int c = 0;
1687                    const char *v;
1688
1689                    while (xs_list_next(wing, &v, &c)) {
1690                        xs *actor = NULL;
1691
1692                        if (valid_status(object_get(v, &actor))) {
1693                            xs *acct = mastoapi_account(NULL, actor);
1694                            out = xs_list_append(out, acct);
1695                        }
1696                    }
1697                }
1698                else
1699                if (strcmp(opt, "followers") == 0) {
1700                    out = xs_list_new();
1701                }
1702
1703                user_free(&snac2);
1704            }
1705            else {
1706                /* try the uid as the md5 of a possibly loaded actor */
1707                if (logged_in && valid_status(object_get_by_md5(uid, &actor))) {
1708                    if (opt == NULL) {
1709                        /* account information */
1710                        out = mastoapi_account(&snac1, actor);
1711                    }
1712                    else
1713                    if (strcmp(opt, "statuses") == 0) {
1714                        /* we don't serve statuses of others; return the empty list */ 
1715                        out = xs_list_new();
1716                    }
1717                    else
1718                    if (strcmp(opt, "featured_tags") == 0) {
1719                        /* snac doesn't have features tags, yet? */
1720                        /* implement empty response so apps like Tokodon don't show an error */
1721                        out = xs_list_new();
1722                    }
1723                }
1724            }
1725
1726            if (out != NULL) {
1727                *body  = xs_json_dumps(out, 4);
1728                *ctype = "application/json";
1729                status = HTTP_STATUS_OK;
1730            }
1731        }
1732    }
1733    else
1734    if (strcmp(cmd, "/v1/timelines/home") == 0) { /** **/
1735        /* the private timeline */
1736        if (logged_in) {
1737            xs *ifn = user_index_fn(&snac1, "private");
1738            xs *out = mastoapi_timeline(&snac1, args, ifn);
1739
1740            *link = timeline_link_header("/api/v1/timelines/home", out);
1741
1742            *body  = xs_json_dumps(out, 4);
1743            *ctype = "application/json";
1744            status = HTTP_STATUS_OK;
1745
1746            srv_debug(2, xs_fmt("mastoapi timeline: returned %d entries", xs_list_len(out)));
1747        }
1748        else {
1749            status = HTTP_STATUS_UNAUTHORIZED;
1750        }
1751    }
1752    else
1753    if (strcmp(cmd, "/v1/timelines/public") == 0) { /** **/
1754        /* the instance public timeline (public timelines for all users) */
1755        xs *ifn = instance_index_fn();
1756        xs *out = mastoapi_timeline(NULL, args, ifn);
1757
1758        *body  = xs_json_dumps(out, 4);
1759        *ctype = "application/json";
1760        status = HTTP_STATUS_OK;
1761    }
1762    else
1763    if (xs_startswith(cmd, "/v1/timelines/tag/")) { /** **/
1764        /* get the tag */
1765        xs *l = xs_split(cmd, "/");
1766        const char *tag = xs_list_get(l, -1);
1767
1768        xs *ifn = tag_fn(tag);
1769        xs *out = mastoapi_timeline(NULL, args, ifn);
1770
1771        *body  = xs_json_dumps(out, 4);
1772        *ctype = "application/json";
1773        status = HTTP_STATUS_OK;
1774    }
1775    else
1776    if (xs_startswith(cmd, "/v1/timelines/list/")) { /** **/
1777        /* get the list id */
1778        if (logged_in) {
1779            xs *l = xs_split(cmd, "/");
1780            const char *list = xs_list_get(l, -1);
1781
1782            xs *ifn = list_timeline_fn(&snac1, list);
1783            xs *out = mastoapi_timeline(NULL, args, ifn);
1784
1785            *body  = xs_json_dumps(out, 4);
1786            *ctype = "application/json";
1787            status = HTTP_STATUS_OK;
1788        }
1789        else
1790            status = HTTP_STATUS_MISDIRECTED_REQUEST;
1791    }
1792    else
1793    if (strcmp(cmd, "/v1/conversations") == 0) { /** **/
1794        /* TBD */
1795        *body  = xs_dup("[]");
1796        *ctype = "application/json";
1797        status = HTTP_STATUS_OK;
1798    }
1799    else
1800    if (strcmp(cmd, "/v1/notifications") == 0) { /** **/
1801        if (logged_in) {
1802            xs *l      = notify_list(&snac1, 0, 64);
1803            xs *out    = xs_list_new();
1804            const xs_dict *v;
1805            const xs_list *excl = xs_dict_get(args, "exclude_types[]");
1806            const char *min_id = xs_dict_get(args, "min_id");
1807            const char *max_id = xs_dict_get(args, "max_id");
1808
1809            if (dbglevel) {
1810                xs *js = xs_json_dumps(args, 0);
1811                srv_debug(1, xs_fmt("mastoapi_notifications args %s", js));
1812            }
1813
1814            xs_list_foreach(l, v) {
1815                xs *noti = notify_get(&snac1, v);
1816
1817                if (noti == NULL)
1818                    continue;
1819
1820                const char *type  = xs_dict_get(noti, "type");
1821                const char *utype = xs_dict_get(noti, "utype");
1822                const char *objid = xs_dict_get(noti, "objid");
1823                const char *id    = xs_dict_get(noti, "id");
1824                xs *fid = xs_replace(id, ".", "");
1825                xs *actor = NULL;
1826                xs *entry = NULL;
1827
1828                if (!valid_status(actor_get(xs_dict_get(noti, "actor"), &actor)))
1829                    continue;
1830
1831                if (objid != NULL && !valid_status(object_get(objid, &entry)))
1832                    continue;
1833
1834                if (is_hidden(&snac1, objid))
1835                    continue;
1836
1837                if (max_id) {
1838                    if (strcmp(fid, max_id) == 0)
1839                        max_id = NULL;
1840
1841                    continue;
1842                }
1843
1844                if (min_id) {
1845                    if (strcmp(fid, min_id) <= 0) {
1846                        continue;
1847                    }
1848                }
1849
1850                /* convert the type */
1851                if (strcmp(type, "Like") == 0 || strcmp(type, "EmojiReact") == 0)
1852                    type = "favourite";
1853                else
1854                if (strcmp(type, "Announce") == 0)
1855                    type = "reblog";
1856                else
1857                if (strcmp(type, "Follow") == 0)
1858                    type = "follow";
1859                else
1860                if (strcmp(type, "Create") == 0)
1861                    type = "mention";
1862                else
1863                if (strcmp(type, "Update") == 0 && strcmp(utype, "Question") == 0)
1864                    type = "poll";
1865                else
1866                    continue;
1867
1868                /* excluded type? */
1869                if (!xs_is_null(excl) && xs_list_in(excl, type) != -1)
1870                    continue;
1871
1872                xs *mn = xs_dict_new();
1873
1874                mn = xs_dict_append(mn, "type", type);
1875
1876                mn = xs_dict_append(mn, "id", fid);
1877
1878                mn = xs_dict_append(mn, "created_at", xs_dict_get(noti, "date"));
1879
1880                xs *acct = mastoapi_account(&snac1, actor);
1881
1882                if (acct == NULL)
1883                    continue;
1884
1885                mn = xs_dict_append(mn, "account", acct);
1886
1887                if (strcmp(type, "follow") != 0 && !xs_is_null(objid)) {
1888                    xs *st = mastoapi_status(&snac1, entry);
1889
1890                    if (st)
1891                        mn = xs_dict_append(mn, "status", st);
1892                }
1893
1894                out = xs_list_append(out, mn);
1895            }
1896
1897            srv_debug(1, xs_fmt("mastoapi_notifications count %d", xs_list_len(out)));
1898
1899            *body  = xs_json_dumps(out, 4);
1900            *ctype = "application/json";
1901            status = HTTP_STATUS_OK;
1902        }
1903        else
1904            status = HTTP_STATUS_UNAUTHORIZED;
1905    }
1906    else
1907    if (strcmp(cmd, "/v1/filters") == 0) { /** **/
1908        /* snac will never have filters */
1909        *body  = xs_dup("[]");
1910        *ctype = "application/json";
1911        status = HTTP_STATUS_OK;
1912    }
1913    else
1914    if (strcmp(cmd, "/v2/filters") == 0) { /** **/
1915        /* snac will never have filters 
1916         * but still, without a v2 endpoint a short delay is introduced
1917         * in some apps */
1918        *body  = xs_dup("[]");
1919        *ctype = "application/json";
1920        status = HTTP_STATUS_OK;
1921    }
1922    else
1923    if (strcmp(cmd, "/v1/favourites") == 0) { /** **/
1924        /* snac will never support a list of favourites */
1925        *body  = xs_dup("[]");
1926        *ctype = "application/json";
1927        status = HTTP_STATUS_OK;
1928    }
1929    else
1930    if (strcmp(cmd, "/v1/bookmarks") == 0) { /** **/
1931        if (logged_in) {
1932            xs *ifn = bookmark_index_fn(&snac1);
1933            xs *out = mastoapi_timeline(&snac1, args, ifn);
1934
1935            *body  = xs_json_dumps(out, 4);
1936            *ctype = "application/json";
1937            status = HTTP_STATUS_OK;
1938        }
1939        else
1940            status = HTTP_STATUS_UNAUTHORIZED;
1941    }
1942    else
1943    if (strcmp(cmd, "/v1/lists") == 0) { /** list of lists **/
1944        if (logged_in) {
1945            xs *lol = list_maint(&snac1, NULL, 0);
1946            xs *l   = xs_list_new();
1947            int c = 0;
1948            const xs_list *li;
1949
1950            while (xs_list_next(lol, &li, &c)) {
1951                xs *d = xs_dict_new();
1952
1953                d = xs_dict_append(d, "id", xs_list_get(li, 0));
1954                d = xs_dict_append(d, "title", xs_list_get(li, 1));
1955                d = xs_dict_append(d, "replies_policy", "list");
1956                d = xs_dict_append(d, "exclusive", xs_stock(XSTYPE_FALSE));
1957
1958                l = xs_list_append(l, d);
1959            }
1960
1961            *body  = xs_json_dumps(l, 4);
1962            *ctype = "application/json";
1963            status = HTTP_STATUS_OK;
1964        }
1965        else
1966            status = HTTP_STATUS_UNAUTHORIZED;
1967    }
1968    else
1969    if (xs_startswith(cmd, "/v1/lists/")) { /** list information **/
1970        if (logged_in) {
1971            xs *l = xs_split(cmd, "/");
1972            const char *p = xs_list_get(l, -1);
1973
1974            if (p) {
1975                if (strcmp(p, "accounts") == 0) {
1976                    p = xs_list_get(l, -2);
1977
1978                    if (p && xs_is_hex(p)) {
1979                        xs *actors = list_content(&snac1, p, NULL, 0);
1980                        xs *out = xs_list_new();
1981                        int c = 0;
1982                        const char *v;
1983
1984                        while (xs_list_next(actors, &v, &c)) {
1985                            xs *actor = NULL;
1986
1987                            if (valid_status(object_get_by_md5(v, &actor))) {
1988                                xs *acct = mastoapi_account(&snac1, actor);
1989                                out = xs_list_append(out, acct);
1990                            }
1991                        }
1992
1993                        *body  = xs_json_dumps(out, 4);
1994                        *ctype = "application/json";
1995                        status = HTTP_STATUS_OK;
1996                    }
1997                }
1998                else
1999                if (xs_is_hex(p)) {
2000                    xs *out = xs_list_new();
2001                    xs *lol = list_maint(&snac1, NULL, 0);
2002                    int c = 0;
2003                    const xs_list *v;
2004
2005                    while (xs_list_next(lol, &v, &c)) {
2006                        const char *id = xs_list_get(v, 0);
2007
2008                        if (id && strcmp(id, p) == 0) {
2009                            xs *d = xs_dict_new();
2010
2011                            d = xs_dict_append(d, "id", p);
2012                            d = xs_dict_append(d, "title", xs_list_get(v, 1));
2013                            d = xs_dict_append(d, "replies_policy", "list");
2014                            d = xs_dict_append(d, "exclusive", xs_stock(XSTYPE_FALSE));
2015
2016                            out = xs_dup(d);
2017                            break;
2018                        }
2019                    }
2020
2021                    *body  = xs_json_dumps(out, 4);
2022                    *ctype = "application/json";
2023                    status = HTTP_STATUS_OK;
2024                }
2025            }
2026        }
2027        else
2028            status = HTTP_STATUS_UNAUTHORIZED;
2029    }
2030    else
2031    if (strcmp(cmd, "/v1/scheduled_statuses") == 0) { /** **/
2032        /* snac does not schedule notes */
2033        *body  = xs_dup("[]");
2034        *ctype = "application/json";
2035        status = HTTP_STATUS_OK;
2036    }
2037    else
2038    if (strcmp(cmd, "/v1/follow_requests") == 0) { /** **/
2039        /* snac does not support optional follow confirmations */
2040        *body  = xs_dup("[]");
2041        *ctype = "application/json";
2042        status = HTTP_STATUS_OK;
2043    }
2044    else
2045    if (strcmp(cmd, "/v1/announcements") == 0) { /** **/
2046        if (logged_in) {
2047            xs *resp = xs_list_new();
2048            double la = 0.0;
2049            xs *user_la = xs_dup(xs_dict_get(snac1.config, "last_announcement"));
2050            if (user_la != NULL)
2051                la = xs_number_get(user_la);
2052            xs *val_date = xs_str_utctime(la, ISO_DATE_SPEC);
2053
2054            /* contrary to html, we always send the announcement and set the read flag instead */
2055
2056            const t_announcement *annce = announcement(la);
2057            if (annce != NULL && annce->text != NULL) {
2058                xs *an = xs_dict_new();
2059                xs *id = xs_fmt("%d", annce->timestamp);
2060                xs *ct = xs_fmt("<p>%s</p>", annce->text);
2061
2062                an = xs_dict_set(an, "id",           id);
2063                an = xs_dict_set(an, "content",      ct);
2064                an = xs_dict_set(an, "starts_at",    xs_stock(XSTYPE_NULL));
2065                an = xs_dict_set(an, "ends_at",      xs_stock(XSTYPE_NULL));
2066                an = xs_dict_set(an, "all_day",      xs_stock(XSTYPE_TRUE));
2067                an = xs_dict_set(an, "published_at", val_date);
2068                an = xs_dict_set(an, "updated_at",   val_date);
2069                an = xs_dict_set(an, "read",         (annce->timestamp >= la)
2070                    ? xs_stock(XSTYPE_FALSE) : xs_stock(XSTYPE_TRUE));
2071                an = xs_dict_set(an, "mentions",     xs_stock(XSTYPE_LIST));
2072                an = xs_dict_set(an, "statuses",     xs_stock(XSTYPE_LIST));
2073                an = xs_dict_set(an, "tags",         xs_stock(XSTYPE_LIST));
2074                an = xs_dict_set(an, "emojis",       xs_stock(XSTYPE_LIST));
2075                an = xs_dict_set(an, "reactions",    xs_stock(XSTYPE_LIST));
2076                resp = xs_list_append(resp, an);
2077            }
2078
2079            *body  = xs_json_dumps(resp, 4);
2080            *ctype = "application/json";
2081            status = HTTP_STATUS_OK;
2082        }
2083    }
2084    else
2085    if (strcmp(cmd, "/v1/custom_emojis") == 0) { /** **/
2086        /* are you kidding me? */
2087        *body  = xs_dup("[]");
2088        *ctype = "application/json";
2089        status = HTTP_STATUS_OK;
2090    }
2091    else
2092    if (strcmp(cmd, "/v1/instance") == 0) { /** **/
2093        /* returns an instance object */
2094        xs *ins = xs_dict_new();
2095        const char *host  = xs_dict_get(srv_config, "host");
2096        const char *title = xs_dict_get(srv_config, "title");
2097        const char *sdesc = xs_dict_get(srv_config, "short_description");
2098
2099        ins = xs_dict_append(ins, "uri",         host);
2100        ins = xs_dict_append(ins, "domain",      host);
2101        ins = xs_dict_append(ins, "title",       title && *title ? title : host);
2102        ins = xs_dict_append(ins, "version",     "4.0.0 (not true; really " USER_AGENT ")");
2103        ins = xs_dict_append(ins, "source_url",  WHAT_IS_SNAC_URL);
2104        ins = xs_dict_append(ins, "description", host);
2105
2106        ins = xs_dict_append(ins, "short_description", sdesc && *sdesc ? sdesc : host);
2107
2108        xs *susie = xs_fmt("%s/susie.png", srv_baseurl);
2109        ins = xs_dict_append(ins, "thumbnail", susie);
2110
2111        const char *v = xs_dict_get(srv_config, "admin_email");
2112        if (xs_is_null(v) || *v == '\0')
2113            v = "admin@localhost";
2114
2115        ins = xs_dict_append(ins, "email", v);
2116
2117        ins = xs_dict_append(ins, "rules", xs_stock(XSTYPE_LIST));
2118
2119        xs *l1 = xs_list_append(xs_list_new(), "en");
2120        ins = xs_dict_append(ins, "languages", l1);
2121
2122        xs *wss = xs_fmt("wss:/" "/%s", xs_dict_get(srv_config, "host"));
2123        xs *urls = xs_dict_new();
2124        urls = xs_dict_append(urls, "streaming_api", wss);
2125
2126        ins = xs_dict_append(ins, "urls", urls);
2127
2128        xs *d2 = xs_dict_append(xs_dict_new(), "user_count", xs_stock(0));
2129        d2 = xs_dict_append(d2, "status_count", xs_stock(0));
2130        d2 = xs_dict_append(d2, "domain_count", xs_stock(0));
2131        ins = xs_dict_append(ins, "stats", d2);
2132
2133        ins = xs_dict_append(ins, "registrations",     xs_stock(XSTYPE_FALSE));
2134        ins = xs_dict_append(ins, "approval_required", xs_stock(XSTYPE_FALSE));
2135        ins = xs_dict_append(ins, "invites_enabled",   xs_stock(XSTYPE_FALSE));
2136
2137        xs *cfg = xs_dict_new();
2138
2139        {
2140            xs *d11 = xs_json_loads("{\"characters_reserved_per_url\":32,"
2141                "\"max_characters\":100000,\"max_media_attachments\":8}");
2142            cfg = xs_dict_append(cfg, "statuses", d11);
2143
2144            xs *d12 = xs_json_loads("{\"max_featured_tags\":0}");
2145            cfg = xs_dict_append(cfg, "accounts", d12);
2146
2147            xs *d13 = xs_json_loads("{\"image_matrix_limit\":33177600,"
2148                        "\"image_size_limit\":16777216,"
2149                        "\"video_frame_rate_limit\":120,"
2150                        "\"video_matrix_limit\":8294400,"
2151                        "\"video_size_limit\":103809024}"
2152            );
2153
2154            {
2155                /* get the supported mime types from the internal list */
2156                const char **p = xs_mime_types;
2157                xs_set mtypes;
2158                xs_set_init(&mtypes);
2159
2160                while (*p) {
2161                    const char *type = p[1];
2162
2163                    if (xs_startswith(type, "image/") ||
2164                        xs_startswith(type, "video/") ||
2165                        xs_startswith(type, "audio/"))
2166                        xs_set_add(&mtypes, type);
2167
2168                    p += 2;
2169                }
2170
2171                xs *l = xs_set_result(&mtypes);
2172                d13 = xs_dict_append(d13, "supported_mime_types", l);
2173            }
2174
2175            cfg = xs_dict_append(cfg, "media_attachments", d13);
2176
2177            xs *d14 = xs_json_loads("{\"max_characters_per_option\":50,"
2178                "\"max_expiration\":2629746,"
2179                "\"max_options\":8,\"min_expiration\":300}");
2180            cfg = xs_dict_append(cfg, "polls", d14);
2181        }
2182
2183        ins = xs_dict_append(ins, "configuration", cfg);
2184
2185        const char *admin_account = xs_dict_get(srv_config, "admin_account");
2186
2187        if (!xs_is_null(admin_account) && *admin_account) {
2188            snac admin;
2189
2190            if (user_open(&admin, admin_account)) {
2191                xs *actor = msg_actor(&admin);
2192                xs *acct  = mastoapi_account(NULL, actor);
2193
2194                ins = xs_dict_append(ins, "contact_account", acct);
2195
2196                user_free(&admin);
2197            }
2198        }
2199
2200        *body  = xs_json_dumps(ins, 4);
2201        *ctype = "application/json";
2202        status = HTTP_STATUS_OK;
2203    }
2204    else
2205    if (xs_startswith(cmd, "/v1/statuses/")) { /** **/
2206        /* information about a status */
2207        if (logged_in) {
2208            xs *l = xs_split(cmd, "/");
2209            const char *id = xs_list_get(l, 3);
2210            const char *op = xs_list_get(l, 4);
2211
2212            if (!xs_is_null(id)) {
2213                xs *msg = NULL;
2214                xs *out = NULL;
2215
2216                /* skip the 'fake' part of the id */
2217                id = MID_TO_MD5(id);
2218
2219                if (valid_status(object_get_by_md5(id, &msg))) {
2220                    if (op == NULL) {
2221                        if (!is_muted(&snac1, get_atto(msg))) {
2222                            /* return the status itself */
2223                            out = mastoapi_status(&snac1, msg);
2224                        }
2225                    }
2226                    else
2227                    if (strcmp(op, "context") == 0) { /** **/
2228                        /* return ancestors and children */
2229                        xs *anc = xs_list_new();
2230                        xs *des = xs_list_new();
2231                        xs_list *p;
2232                        const xs_str *v;
2233                        char pid[MD5_HEX_SIZE];
2234
2235                        /* build the [grand]parent list, moving up */
2236                        strncpy(pid, id, sizeof(pid));
2237
2238                        while (object_parent(pid, pid)) {
2239                            xs *m2 = NULL;
2240
2241                            if (valid_status(timeline_get_by_md5(&snac1, pid, &m2))) {
2242                                xs *st = mastoapi_status(&snac1, m2);
2243
2244                                if (st)
2245                                    anc = xs_list_insert(anc, 0, st);
2246                            }
2247                            else
2248                                break;
2249                        }
2250
2251                        /* build the children list */
2252                        xs *children = object_children(xs_dict_get(msg, "id"));
2253                        p = children;
2254
2255                        while (xs_list_iter(&p, &v)) {
2256                            xs *m2 = NULL;
2257
2258                            if (valid_status(timeline_get_by_md5(&snac1, v, &m2))) {
2259                                if (xs_is_null(xs_dict_get(m2, "name"))) {
2260                                    xs *st = mastoapi_status(&snac1, m2);
2261
2262                                    if (st)
2263                                        des = xs_list_append(des, st);
2264                                }
2265                            }
2266                        }
2267
2268                        out = xs_dict_new();
2269                        out = xs_dict_append(out, "ancestors",   anc);
2270                        out = xs_dict_append(out, "descendants", des);
2271                    }
2272                    else
2273                    if (strcmp(op, "reblogged_by") == 0 || /** **/
2274                        strcmp(op, "favourited_by") == 0) { /** **/
2275                        /* return the list of people who liked or boosted this */
2276                        out = xs_list_new();
2277
2278                        xs *l = NULL;
2279
2280                        if (op[0] == 'r')
2281                            l = object_announces(xs_dict_get(msg, "id"));
2282                        else
2283                            l = object_likes(xs_dict_get(msg, "id"));
2284
2285                        xs_list *p = l;
2286                        const xs_str *v;
2287
2288                        while (xs_list_iter(&p, &v)) {
2289                            xs *actor2 = NULL;
2290
2291                            if (valid_status(object_get_by_md5(v, &actor2))) {
2292                                xs *acct2 = mastoapi_account(&snac1, actor2);
2293
2294                                out = xs_list_append(out, acct2);
2295                            }
2296                        }
2297                    }
2298                    else
2299                    if (strcmp(op, "source") == 0) { /** **/
2300                        out = xs_dict_new();
2301
2302                        /* get the mastoapi status id */
2303                        out = xs_dict_append(out, "id", xs_list_get(l, 3));
2304
2305                        out = xs_dict_append(out, "text", xs_dict_get(msg, "sourceContent"));
2306                        out = xs_dict_append(out, "spoiler_text", xs_dict_get(msg, "summary"));
2307                    }
2308                }
2309                else
2310                    srv_debug(1, xs_fmt("mastoapi status: bad id %s", id));
2311
2312                if (out != NULL) {
2313                    *body  = xs_json_dumps(out, 4);
2314                    *ctype = "application/json";
2315                    status = HTTP_STATUS_OK;
2316                }
2317            }
2318        }
2319        else
2320            status = HTTP_STATUS_UNAUTHORIZED;
2321    }
2322    else
2323    if (strcmp(cmd, "/v1/preferences") == 0) { /** **/
2324        *body  = xs_dup("{}");
2325        *ctype = "application/json";
2326        status = HTTP_STATUS_OK;
2327    }
2328    else
2329    if (strcmp(cmd, "/v1/markers") == 0) { /** **/
2330        if (logged_in) {
2331            const xs_list *timeline = xs_dict_get(args, "timeline[]");
2332            xs_str *json = NULL;
2333            if (!xs_is_null(timeline)) 
2334                json = xs_json_dumps(markers_get(&snac1, timeline), 4);
2335
2336            if (!xs_is_null(json))
2337                *body = json;
2338            else
2339                *body = xs_dup("{}");
2340
2341            *ctype = "application/json";
2342            status = HTTP_STATUS_OK;
2343        }
2344        else
2345            status = HTTP_STATUS_UNAUTHORIZED;
2346    }
2347    else
2348    if (strcmp(cmd, "/v1/followed_tags") == 0) { /** **/
2349        *body  = xs_dup("[]");
2350        *ctype = "application/json";
2351        status = HTTP_STATUS_OK;
2352    }
2353    else
2354    if (strcmp(cmd, "/v1/trends/tags") == 0) { /** **/
2355        *body  = xs_dup("[]");
2356        *ctype = "application/json";
2357        status = HTTP_STATUS_OK;
2358    }
2359    else
2360    if (strcmp(cmd, "/v1/trends/statuses") == 0) { /** **/
2361        *body  = xs_dup("[]");
2362        *ctype = "application/json";
2363        status = HTTP_STATUS_OK;
2364    }
2365    else
2366    if (strcmp(cmd, "/v2/search") == 0) { /** **/
2367        if (logged_in) {
2368            const char *q      = xs_dict_get(args, "q");
2369            const char *type   = xs_dict_get(args, "type");
2370            const char *offset = xs_dict_get(args, "offset");
2371
2372            xs *acl = xs_list_new();
2373            xs *stl = xs_list_new();
2374            xs *htl = xs_list_new();
2375            xs *res = xs_dict_new();
2376
2377            if (xs_is_null(offset) || strcmp(offset, "0") == 0) {
2378                /* reply something only for offset 0; otherwise,
2379                   apps like Tusky keep asking again and again */
2380                if (xs_startswith(q, "https://")) {
2381                    xs *md5 = xs_md5_hex(q, strlen(q));
2382
2383                    if (!timeline_here(&snac1, md5)) {
2384                        xs *object = NULL;
2385                        int status;
2386
2387                        status = activitypub_request(&snac1, q, &object);
2388                        snac_debug(&snac1, 1, xs_fmt("Request searched URL %s %d", q, status));
2389
2390                        if (valid_status(status)) {
2391                            /* got it; also request the actor */
2392                            const char *attr_to = get_atto(object);
2393                            xs *actor_obj = NULL;
2394
2395                            if (!xs_is_null(attr_to)) {
2396                                status = actor_request(&snac1, attr_to, &actor_obj);
2397
2398                                snac_debug(&snac1, 1, xs_fmt("Request author %s of %s %d", attr_to, q, status));
2399
2400                                if (valid_status(status)) {
2401                                    /* add the actor */
2402                                    actor_add(attr_to, actor_obj);
2403
2404                                    /* add the post to the timeline */
2405                                    timeline_add(&snac1, q, object);
2406                                }
2407                            }
2408                        }
2409                    }
2410                }
2411
2412                if (!xs_is_null(q)) {
2413                    if (xs_is_null(type) || strcmp(type, "accounts") == 0) {
2414                        /* do a webfinger query */
2415                        char *actor = NULL;
2416                        char *user  = NULL;
2417
2418                        if (valid_status(webfinger_request(q, &actor, &user)) && actor) {
2419                            xs *actor_o = NULL;
2420
2421                            if (valid_status(actor_request(&snac1, actor, &actor_o))) {
2422                                xs *acct = mastoapi_account(NULL, actor_o);
2423
2424                                acl = xs_list_append(acl, acct);
2425
2426                                if (!object_here(actor))
2427                                    object_add(actor, actor_o);
2428                            }
2429                        }
2430                    }
2431
2432                    if (xs_is_null(type) || strcmp(type, "hashtags") == 0) {
2433                        /* search this tag */
2434                        xs *tl = tag_search((char *)q, 0, 1);
2435
2436                        if (xs_list_len(tl)) {
2437                            xs *d = xs_dict_new();
2438
2439                            d = xs_dict_append(d, "name", q);
2440                            xs *url = xs_fmt("%s?t=%s", srv_baseurl, q);
2441                            d = xs_dict_append(d, "url", url);
2442                            d = xs_dict_append(d, "history", xs_stock(XSTYPE_LIST));
2443
2444                            htl = xs_list_append(htl, d);
2445                        }
2446                    }
2447
2448                    if (xs_is_null(type) || strcmp(type, "statuses") == 0) {
2449                        int to = 0;
2450                        int cnt = 40;
2451                        xs *tl = content_search(&snac1, q, 1, 0, cnt, 0, &to);
2452                        int c = 0;
2453                        const char *v;
2454
2455                        while (xs_list_next(tl, &v, &c) && --cnt) {
2456                            xs *post = NULL;
2457
2458                            if (!valid_status(timeline_get_by_md5(&snac1, v, &post)))
2459                                continue;
2460
2461                            xs *s = mastoapi_status(&snac1, post);
2462
2463                            if (!xs_is_null(s))
2464                                stl = xs_list_append(stl, s);
2465                        }
2466                    }
2467                }
2468            }
2469
2470            res = xs_dict_append(res, "accounts", acl);
2471            res = xs_dict_append(res, "statuses", stl);
2472            res = xs_dict_append(res, "hashtags", htl);
2473
2474            *body  = xs_json_dumps(res, 4);
2475            *ctype = "application/json";
2476            status = HTTP_STATUS_OK;
2477        }
2478        else
2479            status = HTTP_STATUS_UNAUTHORIZED;
2480    }
2481
2482    /* user cleanup */
2483    if (logged_in)
2484        user_free(&snac1);
2485
2486    srv_debug(1, xs_fmt("mastoapi_get_handler %s %d", q_path, status));
2487
2488    return status;
2489}
2490
2491
2492int mastoapi_post_handler(const xs_dict *req, const char *q_path,
2493                          const char *payload, int p_size,
2494                          char **body, int *b_size, char **ctype)
2495{
2496    (void)p_size;
2497    (void)b_size;
2498
2499    if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
2500        return 0;
2501
2502    int status    = HTTP_STATUS_NOT_FOUND;
2503    xs *args      = NULL;
2504    const char *i_ctype = xs_dict_get(req, "content-type");
2505
2506    if (i_ctype && xs_startswith(i_ctype, "application/json")) {
2507        if (!xs_is_null(payload))
2508            args = xs_json_loads(payload);
2509    }
2510    else if (i_ctype && xs_startswith(i_ctype, "application/x-www-form-urlencoded"))
2511    {
2512        // Some apps send form data instead of json so we should cater for those
2513        if (!xs_is_null(payload)) {
2514            args    = xs_url_vars(payload);
2515        }
2516    }
2517    else
2518        args = xs_dup(xs_dict_get(req, "p_vars"));
2519
2520    if (args == NULL)
2521        return HTTP_STATUS_BAD_REQUEST;
2522
2523    xs *cmd = xs_replace_n(q_path, "/api", "", 1);
2524
2525    snac snac = {0};
2526    int logged_in = process_auth_token(&snac, req);
2527
2528    if (strcmp(cmd, "/v1/apps") == 0) { /** **/
2529        const char *name  = xs_dict_get(args, "client_name");
2530        const char *ruri  = xs_dict_get(args, "redirect_uris");
2531        const char *scope = xs_dict_get(args, "scope");
2532
2533        /* Ice Cubes sends these values as query parameters, so try these */
2534        if (name == NULL && ruri == NULL && scope == NULL) {
2535            args = xs_dup(xs_dict_get(req, "q_vars"));
2536            name  = xs_dict_get(args, "client_name");
2537            ruri  = xs_dict_get(args, "redirect_uris");
2538            scope = xs_dict_get(args, "scope");
2539        }
2540
2541        if (xs_type(ruri) == XSTYPE_LIST)
2542            ruri = xs_dict_get(ruri, 0);
2543
2544        if (name && ruri) {
2545            xs *app  = xs_dict_new();
2546            xs *id   = xs_replace_i(tid(0), ".", "");
2547            xs *csec = random_str();
2548            xs *vkey = random_str();
2549            xs *cid  = NULL;
2550
2551            /* pick a non-existent random cid */
2552            for (;;) {
2553                cid = random_str();
2554                xs *p_app = app_get(cid);
2555
2556                if (p_app == NULL)
2557                    break;
2558
2559                xs_free(cid);
2560            }
2561
2562            app = xs_dict_append(app, "name",          name);
2563            app = xs_dict_append(app, "redirect_uri",  ruri);
2564            app = xs_dict_append(app, "client_id",     cid);
2565            app = xs_dict_append(app, "client_secret", csec);
2566            app = xs_dict_append(app, "vapid_key",     vkey);
2567            app = xs_dict_append(app, "id",            id);
2568
2569            *body  = xs_json_dumps(app, 4);
2570            *ctype = "application/json";
2571            status = HTTP_STATUS_OK;
2572
2573            app = xs_dict_append(app, "code", "");
2574
2575            if (scope)
2576                app = xs_dict_append(app, "scope", scope);
2577
2578            app_add(cid, app);
2579
2580            srv_debug(1, xs_fmt("mastoapi apps: new app %s", cid));
2581        }
2582    }
2583    else
2584    if (strcmp(cmd, "/v1/statuses") == 0) { /** **/
2585        if (logged_in) {
2586            /* post a new Note */
2587            const char *content    = xs_dict_get(args, "status");
2588            const char *mid        = xs_dict_get(args, "in_reply_to_id");
2589            const char *visibility = xs_dict_get(args, "visibility");
2590            const char *summary    = xs_dict_get(args, "spoiler_text");
2591            const char *media_ids  = xs_dict_get(args, "media_ids");
2592
2593            if (xs_is_null(media_ids))
2594                media_ids = xs_dict_get(args, "media_ids[]");
2595
2596            if (xs_is_null(media_ids))
2597                media_ids = xs_dict_get(args, "media_ids");
2598
2599            if (xs_is_null(visibility))
2600                visibility = "public";
2601
2602            xs *attach_list = xs_list_new();
2603            xs *irt         = NULL;
2604
2605            /* is it a reply? */
2606            if (mid != NULL) {
2607                xs *r_msg = NULL;
2608                const char *md5 = MID_TO_MD5(mid);
2609
2610                if (valid_status(object_get_by_md5(md5, &r_msg)))
2611                    irt = xs_dup(xs_dict_get(r_msg, "id"));
2612            }
2613
2614            /* does it have attachments? */
2615            if (!xs_is_null(media_ids)) {
2616                xs *mi = NULL;
2617
2618                if (xs_type(media_ids) == XSTYPE_LIST)
2619                    mi = xs_dup(media_ids);
2620                else {
2621                    mi = xs_list_new();
2622                    mi = xs_list_append(mi, media_ids);
2623                }
2624
2625                xs_list *p = mi;
2626                const xs_str *v;
2627
2628                while (xs_list_iter(&p, &v)) {
2629                    xs *l    = xs_list_new();
2630                    xs *url  = xs_fmt("%s/s/%s", snac.actor, v);
2631                    xs *desc = static_get_meta(&snac, v);
2632
2633                    l = xs_list_append(l, url);
2634                    l = xs_list_append(l, desc);
2635
2636                    attach_list = xs_list_append(attach_list, l);
2637                }
2638            }
2639
2640            /* prepare the message */
2641            xs *msg = msg_note(&snac, content, NULL, irt, attach_list,
2642                        strcmp(visibility, "public") == 0 ? 0 : 1);
2643
2644            if (!xs_is_null(summary) && *summary) {
2645                msg = xs_dict_set(msg, "sensitive", xs_stock(XSTYPE_TRUE));
2646                msg = xs_dict_set(msg, "summary",   summary);
2647            }
2648
2649            /* store */
2650            timeline_add(&snac, xs_dict_get(msg, "id"), msg);
2651
2652            /* 'Create' message */
2653            xs *c_msg = msg_create(&snac, msg);
2654            enqueue_message(&snac, c_msg);
2655
2656            timeline_touch(&snac);
2657
2658            /* convert to a mastodon status as a response code */
2659            xs *st = mastoapi_status(&snac, msg);
2660
2661            *body  = xs_json_dumps(st, 4);
2662            *ctype = "application/json";
2663            status = HTTP_STATUS_OK;
2664        }
2665        else
2666            status = HTTP_STATUS_UNAUTHORIZED;
2667    }
2668    else
2669    if (xs_startswith(cmd, "/v1/statuses")) { /** **/
2670        if (logged_in) {
2671            /* operations on a status */
2672            xs *l = xs_split(cmd, "/");
2673            const char *mid = xs_list_get(l, 3);
2674            const char *op  = xs_list_get(l, 4);
2675
2676            if (!xs_is_null(mid)) {
2677                xs *msg = NULL;
2678                xs *out = NULL;
2679
2680                /* skip the 'fake' part of the id */
2681                mid = MID_TO_MD5(mid);
2682
2683                if (valid_status(timeline_get_by_md5(&snac, mid, &msg))) {
2684                    const char *id = xs_dict_get(msg, "id");
2685
2686                    if (op == NULL) {
2687                        /* no operation (?) */
2688                    }
2689                    else
2690                    if (strcmp(op, "favourite") == 0) { /** **/
2691                        xs *n_msg = msg_admiration(&snac, id, "Like");
2692
2693                        if (n_msg != NULL) {
2694                            enqueue_message(&snac, n_msg);
2695                            timeline_admire(&snac, xs_dict_get(n_msg, "object"), snac.actor, 1);
2696
2697                            out = mastoapi_status(&snac, msg);
2698                        }
2699                    }
2700                    else
2701                    if (strcmp(op, "unfavourite") == 0) { /** **/
2702                        xs *n_msg = msg_repulsion(&snac, id, "Like");
2703
2704                        if (n_msg != NULL) {
2705                            enqueue_message(&snac, n_msg);
2706
2707                            out = mastoapi_status(&snac, msg);
2708                        }
2709                    }
2710                    else
2711                    if (strcmp(op, "reblog") == 0) { /** **/
2712                        xs *n_msg = msg_admiration(&snac, id, "Announce");
2713
2714                        if (n_msg != NULL) {
2715                            enqueue_message(&snac, n_msg);
2716                            timeline_admire(&snac, xs_dict_get(n_msg, "object"), snac.actor, 0);
2717
2718                            out = mastoapi_status(&snac, msg);
2719                        }
2720                    }
2721                    else
2722                    if (strcmp(op, "unreblog") == 0) { /** **/
2723                        xs *n_msg = msg_repulsion(&snac, id, "Announce");
2724
2725                        if (n_msg != NULL) {
2726                            enqueue_message(&snac, n_msg);
2727
2728                            out = mastoapi_status(&snac, msg);
2729                        }
2730                    }
2731                    else
2732                    if (strcmp(op, "bookmark") == 0) { /** **/
2733                        /* bookmark this message */
2734                        if (bookmark(&snac, id) == 0)
2735                            out = mastoapi_status(&snac, msg);
2736                        else
2737                            status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
2738                    }
2739                    else
2740                    if (strcmp(op, "unbookmark") == 0) { /** **/
2741                        /* unbookmark this message */
2742                        unbookmark(&snac, id);
2743                        out = mastoapi_status(&snac, msg);
2744                    }
2745                    else
2746                    if (strcmp(op, "pin") == 0) { /** **/
2747                        /* pin this message */
2748                        if (pin(&snac, id) == 0)
2749                            out = mastoapi_status(&snac, msg);
2750                        else
2751                            status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
2752                    }
2753                    else
2754                    if (strcmp(op, "unpin") == 0) { /** **/
2755                        /* unpin this message */
2756                        unpin(&snac, id);
2757                        out = mastoapi_status(&snac, msg);
2758                    }
2759                    else
2760                    if (strcmp(op, "mute") == 0) { /** **/
2761                        /* Mastodon's mute is snac's hide */
2762                    }
2763                    else
2764                    if (strcmp(op, "unmute") == 0) { /** **/
2765                        /* Mastodon's unmute is snac's unhide */
2766                    }
2767                }
2768
2769                if (out != NULL) {
2770                    *body  = xs_json_dumps(out, 4);
2771                    *ctype = "application/json";
2772                    status = HTTP_STATUS_OK;
2773                }
2774            }
2775        }
2776        else
2777            status = HTTP_STATUS_UNAUTHORIZED;
2778    }
2779    else
2780    if (strcmp(cmd, "/v1/notifications/clear") == 0) { /** **/
2781        if (logged_in) {
2782            notify_clear(&snac);
2783            timeline_touch(&snac);
2784
2785            *body  = xs_dup("{}");
2786            *ctype = "application/json";
2787            status = HTTP_STATUS_OK;
2788        }
2789        else
2790            status = HTTP_STATUS_UNAUTHORIZED;
2791    }
2792    else
2793    if (strcmp(cmd, "/v1/push/subscription") == 0) { /** **/
2794        /* I don't know what I'm doing */
2795        if (logged_in) {
2796            const char *v;
2797
2798            xs *wpush = xs_dict_new();
2799
2800            wpush = xs_dict_append(wpush, "id", "1");
2801
2802            v = xs_dict_get(args, "data");
2803            v = xs_dict_get(v, "alerts");
2804            wpush = xs_dict_append(wpush, "alerts", v);
2805
2806            v = xs_dict_get(args, "subscription");
2807            v = xs_dict_get(v, "endpoint");
2808            wpush = xs_dict_append(wpush, "endpoint", v);
2809
2810            xs *server_key = random_str();
2811            wpush = xs_dict_append(wpush, "server_key", server_key);
2812
2813            *body  = xs_json_dumps(wpush, 4);
2814            *ctype = "application/json";
2815            status = HTTP_STATUS_OK;
2816        }
2817        else
2818            status = HTTP_STATUS_UNAUTHORIZED;
2819    }
2820    else
2821    if (strcmp(cmd, "/v1/media") == 0 || strcmp(cmd, "/v2/media") == 0) { /** **/
2822        if (logged_in) {
2823            const xs_list *file = xs_dict_get(args, "file");
2824            const char *desc    = xs_dict_get(args, "description");
2825
2826            if (xs_is_null(desc))
2827                desc = "";
2828
2829            status = HTTP_STATUS_BAD_REQUEST;
2830
2831            if (xs_type(file) == XSTYPE_LIST) {
2832                const char *fn = xs_list_get(file, 0);
2833
2834                if (*fn != '\0') {
2835                    char *ext = strrchr(fn, '.');
2836                    xs *hash  = xs_md5_hex(fn, strlen(fn));
2837                    xs *id    = xs_fmt("%s%s", hash, ext);
2838                    xs *url   = xs_fmt("%s/s/%s", snac.actor, id);
2839                    int fo    = xs_number_get(xs_list_get(file, 1));
2840                    int fs    = xs_number_get(xs_list_get(file, 2));
2841
2842                    /* store */
2843                    static_put(&snac, id, payload + fo, fs);
2844                    static_put_meta(&snac, id, desc);
2845
2846                    /* prepare a response */
2847                    xs *rsp = xs_dict_new();
2848
2849                    rsp = xs_dict_append(rsp, "id",          id);
2850                    rsp = xs_dict_append(rsp, "type",        "image");
2851                    rsp = xs_dict_append(rsp, "url",         url);
2852                    rsp = xs_dict_append(rsp, "preview_url", url);
2853                    rsp = xs_dict_append(rsp, "remote_url",  url);
2854                    rsp = xs_dict_append(rsp, "description", desc);
2855
2856                    *body  = xs_json_dumps(rsp, 4);
2857                    *ctype = "application/json";
2858                    status = HTTP_STATUS_OK;
2859                }
2860            }
2861        }
2862        else
2863            status = HTTP_STATUS_UNAUTHORIZED;
2864    }
2865    else
2866    if (xs_startswith(cmd, "/v1/accounts")) { /** **/
2867        if (logged_in) {
2868            /* account-related information */
2869            xs *l = xs_split(cmd, "/");
2870            const char *md5 = xs_list_get(l, 3);
2871            const char *opt = xs_list_get(l, 4);
2872            xs *rsp = NULL;
2873
2874            if (!xs_is_null(md5) && *md5) {
2875                xs *actor_o = NULL;
2876
2877                if (xs_is_null(opt)) {
2878                    /* ? */
2879                }
2880                else
2881                if (strcmp(opt, "follow") == 0) { /** **/
2882                    if (valid_status(object_get_by_md5(md5, &actor_o))) {
2883                        const char *actor = xs_dict_get(actor_o, "id");
2884
2885                        xs *msg = msg_follow(&snac, actor);
2886
2887                        if (msg != NULL) {
2888                            /* reload the actor from the message, in may be different */
2889                            actor = xs_dict_get(msg, "object");
2890
2891                            following_add(&snac, actor, msg);
2892
2893                            enqueue_output_by_actor(&snac, msg, actor, 0);
2894
2895                            rsp = mastoapi_relationship(&snac, md5);
2896                        }
2897                    }
2898                }
2899                else
2900                if (strcmp(opt, "unfollow") == 0) { /** **/
2901                    if (valid_status(object_get_by_md5(md5, &actor_o))) {
2902                        const char *actor = xs_dict_get(actor_o, "id");
2903
2904                        /* get the following object */
2905                        xs *object = NULL;
2906
2907                        if (valid_status(following_get(&snac, actor, &object))) {
2908                            xs *msg = msg_undo(&snac, xs_dict_get(object, "object"));
2909
2910                            following_del(&snac, actor);
2911
2912                            enqueue_output_by_actor(&snac, msg, actor, 0);
2913
2914                            rsp = mastoapi_relationship(&snac, md5);
2915                        }
2916                    }
2917                }
2918                else
2919                if (strcmp(opt, "block") == 0) { /** **/
2920                    if (valid_status(object_get_by_md5(md5, &actor_o))) {
2921                        const char *actor = xs_dict_get(actor_o, "id");
2922
2923                        mute(&snac, actor);
2924
2925                        rsp = mastoapi_relationship(&snac, md5);
2926                    }
2927                }
2928                else
2929                if (strcmp(opt, "unblock") == 0) { /** **/
2930                    if (valid_status(object_get_by_md5(md5, &actor_o))) {
2931                        const char *actor = xs_dict_get(actor_o, "id");
2932
2933                        unmute(&snac, actor);
2934
2935                        rsp = mastoapi_relationship(&snac, md5);
2936                    }
2937                }
2938            }
2939
2940            if (rsp != NULL) {
2941                *body  = xs_json_dumps(rsp, 4);
2942                *ctype = "application/json";
2943                status = HTTP_STATUS_OK;
2944            }
2945        }
2946        else
2947            status = HTTP_STATUS_UNAUTHORIZED;
2948    }
2949    else
2950    if (xs_startswith(cmd, "/v1/polls")) { /** **/
2951        if (logged_in) {
2952            /* operations on a status */
2953            xs *l = xs_split(cmd, "/");
2954            const char *mid = xs_list_get(l, 3);
2955            const char *op  = xs_list_get(l, 4);
2956
2957            if (!xs_is_null(mid)) {
2958                xs *msg = NULL;
2959                xs *out = NULL;
2960
2961                /* skip the 'fake' part of the id */
2962                mid = MID_TO_MD5(mid);
2963
2964                if (valid_status(timeline_get_by_md5(&snac, mid, &msg))) {
2965                    const char *id   = xs_dict_get(msg, "id");
2966                    const char *atto = get_atto(msg);
2967
2968                    const xs_list *opts = xs_dict_get(msg, "oneOf");
2969                    if (opts == NULL)
2970                        opts = xs_dict_get(msg, "anyOf");
2971
2972                    if (op == NULL) {
2973                    }
2974                    else
2975                    if (strcmp(op, "votes") == 0) {
2976                        const xs_list *choices = xs_dict_get(args, "choices[]");
2977
2978                        if (xs_is_null(choices))
2979                            choices = xs_dict_get(args, "choices");
2980
2981                        if (xs_type(choices) == XSTYPE_LIST) {
2982                            const xs_str *v;
2983
2984                            int c = 0;
2985                            while (xs_list_next(choices, &v, &c)) {
2986                                int io           = atoi(v);
2987                                const xs_dict *o = xs_list_get(opts, io);
2988
2989                                if (o) {
2990                                    const char *name = xs_dict_get(o, "name");
2991
2992                                    xs *msg = msg_note(&snac, "", atto, (char *)id, NULL, 1);
2993                                    msg = xs_dict_append(msg, "name", name);
2994
2995                                    xs *c_msg = msg_create(&snac, msg);
2996                                    enqueue_message(&snac, c_msg);
2997                                    timeline_add(&snac, xs_dict_get(msg, "id"), msg);
2998                                }
2999                            }
3000
3001                            out = mastoapi_poll(&snac, msg);
3002                        }
3003                    }
3004                }
3005
3006                if (out != NULL) {
3007                    *body  = xs_json_dumps(out, 4);
3008                    *ctype = "application/json";
3009                    status = HTTP_STATUS_OK;
3010                }
3011            }
3012        }
3013        else
3014            status = HTTP_STATUS_UNAUTHORIZED;
3015    }
3016    else
3017    if (strcmp(cmd, "/v1/lists") == 0) {
3018        if (logged_in) {
3019            const char *title = xs_dict_get(args, "title");
3020
3021            if (xs_type(title) == XSTYPE_STRING) {
3022                /* add the list */
3023                xs *out = xs_dict_new();
3024                xs *lid = list_maint(&snac, title, 1);
3025
3026                if (!xs_is_null(lid)) {
3027                    out = xs_dict_append(out, "id", lid);
3028                    out = xs_dict_append(out, "title", title);
3029                    out = xs_dict_append(out, "replies_policy", xs_dict_get_def(args, "replies_policy", "list"));
3030                    out = xs_dict_append(out, "exclusive", xs_stock(XSTYPE_FALSE));
3031
3032                    status = HTTP_STATUS_OK;
3033                }
3034                else {
3035                    out = xs_dict_append(out, "error", "cannot create list");
3036                    status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
3037                }
3038
3039                *body  = xs_json_dumps(out, 4);
3040                *ctype = "application/json";
3041            }
3042            else
3043                status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
3044        }
3045    }
3046    else
3047    if (xs_startswith(cmd, "/v1/lists/")) { /** list maintenance **/
3048        if (logged_in) {
3049            xs *l = xs_split(cmd, "/");
3050            const char *op = xs_list_get(l, -1);
3051            const char *id = xs_list_get(l, -2);
3052
3053            if (op && id && xs_is_hex(id)) {
3054                if (strcmp(op, "accounts") == 0) {
3055                    const xs_list *accts = xs_dict_get(args, "account_ids[]");
3056
3057                    if (xs_is_null(accts))
3058                        accts = xs_dict_get(args, "account_ids");
3059
3060                    int c = 0;
3061                    const char *v;
3062
3063                    while (xs_list_next(accts, &v, &c)) {
3064                        list_content(&snac, id, v, 1);
3065                    }
3066
3067                    xs *out = xs_dict_new();
3068                    *body   = xs_json_dumps(out, 4);
3069                    *ctype  = "application/json";
3070                    status  = HTTP_STATUS_OK;
3071                }
3072            }
3073        }
3074    }
3075    else if (strcmp(cmd, "/v1/markers") == 0) { /** **/
3076        xs_str *json = NULL;
3077        if (logged_in) {
3078            const xs_str *home_marker = xs_dict_get(args, "home[last_read_id]");
3079            if (xs_is_null(home_marker)) {
3080                const xs_dict *home = xs_dict_get(args, "home");
3081                if (!xs_is_null(home))
3082                    home_marker = xs_dict_get(home, "last_read_id");
3083            }
3084            
3085            const xs_str *notify_marker = xs_dict_get(args, "notifications[last_read_id]");
3086            if (xs_is_null(notify_marker)) {
3087                const xs_dict *notify = xs_dict_get(args, "notifications");
3088                if (!xs_is_null(notify))
3089                    notify_marker = xs_dict_get(notify, "last_read_id");
3090            }
3091            json = xs_json_dumps(markers_set(&snac, home_marker, notify_marker), 4);
3092        }
3093        if (!xs_is_null(json))
3094            *body = json;
3095        else
3096            *body = xs_dup("{}");
3097
3098        *ctype = "application/json";
3099        status = HTTP_STATUS_OK;
3100    }
3101    else
3102        status = HTTP_STATUS_UNPROCESSABLE_CONTENT;
3103
3104    /* user cleanup */
3105    if (logged_in)
3106        user_free(&snac);
3107
3108    srv_debug(1, xs_fmt("mastoapi_post_handler %s %d", q_path, status));
3109
3110    return status;
3111}
3112
3113
3114int mastoapi_delete_handler(const xs_dict *req, const char *q_path,
3115                          const char *payload, int p_size,
3116                          char **body, int *b_size, char **ctype)
3117{
3118    (void)p_size;
3119    (void)body;
3120    (void)b_size;
3121    (void)ctype;
3122
3123    if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
3124        return 0;
3125
3126    int status    = HTTP_STATUS_NOT_FOUND;
3127    xs *args      = NULL;
3128    const char *i_ctype = xs_dict_get(req, "content-type");
3129
3130    if (i_ctype && xs_startswith(i_ctype, "application/json")) {
3131        if (!xs_is_null(payload))
3132            args = xs_json_loads(payload);
3133    }
3134    else if (i_ctype && xs_startswith(i_ctype, "application/x-www-form-urlencoded"))
3135    {
3136        // Some apps send form data instead of json so we should cater for those
3137        if (!xs_is_null(payload)) {
3138            args = xs_url_vars(payload);
3139        }
3140    }
3141    else
3142        args = xs_dup(xs_dict_get(req, "p_vars"));
3143
3144    if (args == NULL)
3145        return HTTP_STATUS_BAD_REQUEST;
3146
3147    snac snac = {0};
3148    int logged_in = process_auth_token(&snac, req);
3149
3150    xs *cmd = xs_replace_n(q_path, "/api", "", 1);
3151
3152    if (xs_startswith(cmd, "/v1/push/subscription") || xs_startswith(cmd, "/v2/push/subscription")) { /** **/
3153        // pretend we deleted it, since it doesn't exist anyway
3154        status = HTTP_STATUS_OK;
3155    }
3156    else
3157    if (xs_startswith(cmd, "/v1/lists/")) {
3158        if (logged_in) {
3159            xs *l = xs_split(cmd, "/");
3160            const char *p = xs_list_get(l, -1);
3161
3162            if (p) {
3163                if (strcmp(p, "accounts") == 0) {
3164                    /* delete account from list */
3165                    p = xs_list_get(l, -2);
3166                    const xs_list *accts = xs_dict_get(args, "account_ids[]");
3167
3168                    if (xs_is_null(accts))
3169                        accts = xs_dict_get(args, "account_ids");
3170
3171                    int c = 0;
3172                    const char *v;
3173
3174                    while (xs_list_next(accts, &v, &c)) {
3175                        list_content(&snac, p, v, 2);
3176                    }
3177                }
3178                else {
3179                    /* delete list */
3180                    if (xs_is_hex(p)) {
3181                        list_maint(&snac, p, 2);
3182                    }
3183                }
3184            }
3185
3186            *ctype = "application/json";
3187            status = HTTP_STATUS_OK;
3188        }
3189        else
3190            status = HTTP_STATUS_UNAUTHORIZED;
3191    }
3192
3193    /* user cleanup */
3194    if (logged_in)
3195        user_free(&snac);
3196
3197    srv_debug(1, xs_fmt("mastoapi_delete_handler %s %d", q_path, status));
3198
3199    return status;
3200}
3201
3202
3203int mastoapi_put_handler(const xs_dict *req, const char *q_path,
3204                          const char *payload, int p_size,
3205                          char **body, int *b_size, char **ctype)
3206{
3207    (void)p_size;
3208    (void)b_size;
3209
3210    if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
3211        return 0;
3212
3213    int status    = HTTP_STATUS_NOT_FOUND;
3214    xs *args      = NULL;
3215    const char *i_ctype = xs_dict_get(req, "content-type");
3216
3217    if (i_ctype && xs_startswith(i_ctype, "application/json")) {
3218        if (!xs_is_null(payload))
3219            args = xs_json_loads(payload);
3220    }
3221    else
3222        args = xs_dup(xs_dict_get(req, "p_vars"));
3223
3224    if (args == NULL)
3225        return HTTP_STATUS_BAD_REQUEST;
3226
3227    xs *cmd = xs_replace_n(q_path, "/api", "", 1);
3228
3229    snac snac = {0};
3230    int logged_in = process_auth_token(&snac, req);
3231
3232    if (xs_startswith(cmd, "/v1/media") || xs_startswith(cmd, "/v2/media")) { /** **/
3233        if (logged_in) {
3234            xs *l = xs_split(cmd, "/");
3235            const char *stid = xs_list_get(l, 3);
3236
3237            if (!xs_is_null(stid)) {
3238                const char *desc = xs_dict_get(args, "description");
3239
3240                /* set the image metadata */
3241                static_put_meta(&snac, stid, desc);
3242
3243                /* prepare a response */
3244                xs *rsp = xs_dict_new();
3245                xs *url = xs_fmt("%s/s/%s", snac.actor, stid);
3246
3247                rsp = xs_dict_append(rsp, "id",          stid);
3248                rsp = xs_dict_append(rsp, "type",        "image");
3249                rsp = xs_dict_append(rsp, "url",         url);
3250                rsp = xs_dict_append(rsp, "preview_url", url);
3251                rsp = xs_dict_append(rsp, "remote_url",  url);
3252                rsp = xs_dict_append(rsp, "description", desc);
3253
3254                *body  = xs_json_dumps(rsp, 4);
3255                *ctype = "application/json";
3256                status = HTTP_STATUS_OK;
3257            }
3258        }
3259        else
3260            status = HTTP_STATUS_UNAUTHORIZED;
3261    }
3262    else
3263    if (xs_startswith(cmd, "/v1/statuses")) {
3264        if (logged_in) {
3265            xs *l = xs_split(cmd, "/");
3266            const char *mid = xs_list_get(l, 3);
3267
3268            if (!xs_is_null(mid)) {
3269                const char *md5 = MID_TO_MD5(mid);
3270                xs *rsp = NULL;
3271                xs *msg = NULL;
3272
3273                if (valid_status(timeline_get_by_md5(&snac, md5, &msg))) {
3274                    const char *content = xs_dict_get(args, "status");
3275                    xs *atls = xs_list_new();
3276                    xs *f_content = not_really_markdown(content, &atls, NULL);
3277
3278                    /* replace fields with new content */
3279                    msg = xs_dict_set(msg, "sourceContent", content);
3280                    msg = xs_dict_set(msg, "content", f_content);
3281
3282                    xs *updated = xs_str_utctime(0, ISO_DATE_SPEC);
3283                    msg = xs_dict_set(msg, "updated", updated);
3284
3285                    /* overwrite object, not updating the indexes */
3286                    object_add_ow(xs_dict_get(msg, "id"), msg);
3287
3288                    /* update message */
3289                    xs *c_msg = msg_update(&snac, msg);
3290
3291                    enqueue_message(&snac, c_msg);
3292
3293                    rsp = mastoapi_status(&snac, msg);
3294                }
3295
3296                if (rsp != NULL) {
3297                    *body  = xs_json_dumps(rsp, 4);
3298                    *ctype = "application/json";
3299                    status = HTTP_STATUS_OK;
3300                }
3301            }
3302        }
3303        else
3304            status = HTTP_STATUS_UNAUTHORIZED;
3305    }
3306
3307    /* user cleanup */
3308    if (logged_in)
3309        user_free(&snac);
3310
3311    srv_debug(1, xs_fmt("mastoapi_put_handler %s %d", q_path, status));
3312
3313    return status;
3314}
3315
3316void persist_image(const char *key, const xs_val *data, const char *payload, snac *snac)
3317/* Store header or avatar */
3318{
3319    if (data != NULL) {
3320        if (xs_type(data) == XSTYPE_LIST) {
3321            const char *fn = xs_list_get(data, 0);
3322
3323            if (fn && *fn) {
3324                const char *ext = strrchr(fn, '.');
3325
3326                /* Mona iOS sends always jpg as application/octet-stream with no filename */
3327                if (ext == NULL || strcmp(fn, key) == 0) {
3328                    ext = ".jpg";
3329                }
3330
3331                /* Make sure we have a unique file name, otherwise updated images will not be
3332                 * re-loaded by clients. */
3333                xs *rnd         = random_str();
3334                xs *hash        = xs_md5_hex(rnd, strlen(rnd));
3335                xs *id          = xs_fmt("%s%s", hash, ext);
3336                xs *url         = xs_fmt("%s/s/%s", snac->actor, id);
3337                int fo          = xs_number_get(xs_list_get(data, 1));
3338                int fs          = xs_number_get(xs_list_get(data, 2));
3339
3340                /* store */
3341                static_put(snac, id, payload + fo, fs);
3342
3343                snac->config = xs_dict_set(snac->config, key, url);
3344            }
3345        }
3346    }
3347}
3348
3349int mastoapi_patch_handler(const xs_dict *req, const char *q_path,
3350                          const char *payload, int p_size,
3351                          char **body, int *b_size, char **ctype)
3352/* Handle profile updates */
3353{
3354    (void)p_size;
3355    (void)b_size;
3356
3357    if (!xs_startswith(q_path, "/api/v1/"))
3358        return 0;
3359
3360    int status    = HTTP_STATUS_NOT_FOUND;
3361    xs *args      = NULL;
3362    const char *i_ctype = xs_dict_get(req, "content-type");
3363
3364    if (i_ctype && xs_startswith(i_ctype, "application/json")) {
3365        if (!xs_is_null(payload))
3366            args = xs_json_loads(payload);
3367    }
3368    else if (i_ctype && xs_startswith(i_ctype, "application/x-www-form-urlencoded"))
3369    {
3370        // Some apps send form data instead of json so we should cater for those
3371        if (!xs_is_null(payload)) {
3372            args    = xs_url_vars(payload);
3373        }
3374    }
3375    else
3376        args = xs_dup(xs_dict_get(req, "p_vars"));
3377
3378    if (args == NULL)
3379        return HTTP_STATUS_BAD_REQUEST;
3380
3381    xs *cmd = xs_replace_n(q_path, "/api", "", 1);
3382
3383    snac snac = {0};
3384    int logged_in = process_auth_token(&snac, req);
3385
3386    if (xs_startswith(cmd, "/v1/accounts/update_credentials")) {
3387        /* Update user profile fields */
3388        if (logged_in) {
3389            int c = 0;
3390            const xs_str *k;
3391            const xs_val *v;
3392            const xs_str *field_name = NULL;
3393            xs *new_fields = xs_dict_new();
3394            while (xs_dict_next(args, &k, &v, &c)) {
3395                if (strcmp(k, "display_name") == 0) {
3396                    if (v != NULL)
3397                        snac.config = xs_dict_set(snac.config, "name", v);
3398                }
3399                else
3400                if (strcmp(k, "note") == 0) {
3401                    if (v != NULL)
3402                        snac.config = xs_dict_set(snac.config, "bio", v);
3403                }
3404                else
3405                if (strcmp(k, "bot") == 0) {
3406                    if (v != NULL)
3407                        snac.config = xs_dict_set(snac.config, "bot",
3408                            (strcmp(v, "true") == 0 ||
3409                                strcmp(v, "1") == 0) ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
3410                }
3411                else
3412                if (strcmp(k, "source[sensitive]") == 0) {
3413                    if (v != NULL)
3414                        snac.config = xs_dict_set(snac.config, "cw",
3415                            strcmp(v, "true") == 0 ? "open" : "");
3416                }
3417                else
3418                if (strcmp(k, "source[privacy]") == 0) {
3419                    if (v != NULL)
3420                        snac.config = xs_dict_set(snac.config, "private",
3421                            strcmp(v, "private") == 0 ? xs_stock(XSTYPE_TRUE) : xs_stock(XSTYPE_FALSE));
3422                }
3423                else
3424                if (strcmp(k, "header") == 0) {
3425                    persist_image("header", v, payload, &snac);
3426                }
3427                else
3428                if (strcmp(k, "avatar") == 0) {
3429                    persist_image("avatar", v, payload, &snac);
3430                }
3431                else
3432                if (xs_between("fields_attributes", k, "[name]")) {
3433                    field_name = strcmp(v, "") != 0 ? v : NULL;
3434                }
3435                else
3436                if (xs_between("fields_attributes", k, "[value]")) {
3437                    if (field_name != NULL) {
3438                        new_fields = xs_dict_set(new_fields, field_name, v);
3439                        snac.config = xs_dict_set(snac.config, "metadata", new_fields);
3440                    }
3441                }
3442                /* we don't have support for the following options, yet
3443                   - discoverable (0/1)
3444                   - locked (0/1)
3445                 */
3446            }
3447
3448            /* Persist profile */
3449            if (user_persist(&snac, 1) == 0)
3450                credentials_get(body, ctype, &status, snac);
3451            else
3452                status = HTTP_STATUS_INTERNAL_SERVER_ERROR;
3453        }
3454        else
3455            status = HTTP_STATUS_UNAUTHORIZED;
3456    }
3457
3458    /* user cleanup */
3459    if (logged_in)
3460        user_free(&snac);
3461
3462    srv_debug(1, xs_fmt("mastoapi_patch_handler %s %d", q_path, status));
3463
3464    return status;
3465}
3466
3467
3468void mastoapi_purge(void)
3469{
3470    xs *spec   = xs_fmt("%s/app/" "*.json", srv_basedir);
3471    xs *files  = xs_glob(spec, 1, 0);
3472    xs_list *p = files;
3473    const xs_str *v;
3474
3475    time_t mt = time(NULL) - 3600;
3476
3477    while (xs_list_iter(&p, &v)) {
3478        xs *cid = xs_replace(v, ".json", "");
3479        xs *fn  = _app_fn(cid);
3480
3481        if (mtime(fn) < mt) {
3482            /* get the app */
3483            xs *app = app_get(cid);
3484
3485            if (app) {
3486                /* old apps with no uid are incomplete cruft */
3487                const char *uid = xs_dict_get(app, "uid");
3488
3489                if (xs_is_null(uid) || *uid == '\0') {
3490                    unlink(fn);
3491                    srv_debug(2, xs_fmt("purged %s", fn));
3492                }
3493            }
3494        }
3495    }
3496}
3497
3498
3499#endif /* #ifndef NO_MASTODON_API */