snac2/mastoapi.c

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/* snac - A simple, minimalistic ActivityPub instance */
/* copyright (c) 2022 - 2023 grunfink / MIT license */
#ifndef NO_MASTODON_API
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#include "xs.h"
#include "xs_encdec.h"
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#include "xs_openssl.h"
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#include "xs_json.h"
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#include "xs_io.h"
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#include "xs_time.h"
#include "snac.h"
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static xs_str *random_str(void)
/* just what is says in the tin */
{
unsigned int data[4] = {0};
FILE *f;
if ((f = fopen("/dev/random", "r")) != NULL) {
fread(data, sizeof(data), 1, f);
fclose(f);
}
else {
data[0] = random() % 0xffffffff;
data[1] = random() % 0xffffffff;
data[2] = random() % 0xffffffff;
data[3] = random() % 0xffffffff;
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}
return xs_hex_enc((char *)data, sizeof(data));
}
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int app_add(const char *id, const xs_dict *app)
/* stores an app */
{
if (!xs_is_hex(id))
return 500;
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int status = 201;
xs *fn = xs_fmt("%s/app/", srv_basedir);
FILE *f;
mkdirx(fn);
fn = xs_str_cat(fn, id);
fn = xs_str_cat(fn, ".json");
if ((f = fopen(fn, "w")) != NULL) {
xs *j = xs_json_dumps_pp(app, 4);
fwrite(j, strlen(j), 1, f);
fclose(f);
}
else
status = 500;
return status;
}
xs_dict *app_get(const char *id)
/* gets an app */
{
if (!xs_is_hex(id))
return NULL;
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xs *fn = xs_fmt("%s/app/%s.json", srv_basedir, id);
xs_dict *app = NULL;
FILE *f;
if ((f = fopen(fn, "r")) != NULL) {
xs *j = xs_readall(f);
fclose(f);
app = xs_json_loads(j);
}
return app;
}
int app_del(const char *id)
/* deletes an app */
{
if (!xs_is_hex(id))
return -1;
xs *fn = xs_fmt("%s/app/%s.json", srv_basedir, id);
return unlink(fn);
}
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int token_add(const char *id, const xs_dict *token)
/* stores a token */
{
if (!xs_is_hex(id))
return 500;
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int status = 201;
xs *fn = xs_fmt("%s/token/", srv_basedir);
FILE *f;
mkdirx(fn);
fn = xs_str_cat(fn, id);
fn = xs_str_cat(fn, ".json");
if ((f = fopen(fn, "w")) != NULL) {
xs *j = xs_json_dumps_pp(token, 4);
fwrite(j, strlen(j), 1, f);
fclose(f);
}
else
status = 500;
return status;
}
xs_dict *token_get(const char *id)
/* gets a token */
{
if (!xs_is_hex(id))
return NULL;
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xs *fn = xs_fmt("%s/token/%s.json", srv_basedir, id);
xs_dict *token = NULL;
FILE *f;
if ((f = fopen(fn, "r")) != NULL) {
xs *j = xs_readall(f);
fclose(f);
token = xs_json_loads(j);
}
return token;
}
int token_del(const char *id)
/* deletes a token */
{
if (!xs_is_hex(id))
return -1;
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xs *fn = xs_fmt("%s/token/%s.json", srv_basedir, id);
return unlink(fn);
}
const char *login_page = ""
"<!DOCTYPE html>\n"
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"<body><h1>%s OAuth identify</h1>\n"
"<div style=\"background-color: red; color: white\">%s</div>\n"
"<form method=\"post\" action=\"https:/" "/%s/oauth/x-snac-login\">\n"
"<p>Login: <input type=\"text\" name=\"login\"></p>\n"
"<p>Password: <input type=\"password\" name=\"passwd\"></p>\n"
"<input type=\"hidden\" name=\"redir\" value=\"%s\">\n"
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"<input type=\"hidden\" name=\"cid\" value=\"%s\">\n"
"<input type=\"hidden\" name=\"state\" value=\"%s\">\n"
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"<input type=\"submit\" value=\"OK\">\n"
"</form><p>%s</p></body>\n"
"";
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int oauth_get_handler(const xs_dict *req, const char *q_path,
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char **body, int *b_size, char **ctype)
{
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if (!xs_startswith(q_path, "/oauth/"))
return 0;
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/* {
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xs *j = xs_json_dumps_pp(req, 4);
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printf("oauth get:\n%s\n", j);
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}*/
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int status = 404;
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xs_dict *msg = xs_dict_get(req, "q_vars");
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xs *cmd = xs_replace(q_path, "/oauth", "");
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srv_debug(1, xs_fmt("oauth_get_handler %s", q_path));
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if (strcmp(cmd, "/authorize") == 0) {
const char *cid = xs_dict_get(msg, "client_id");
const char *ruri = xs_dict_get(msg, "redirect_uri");
const char *rtype = xs_dict_get(msg, "response_type");
const char *state = xs_dict_get(msg, "state");
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status = 400;
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if (cid && ruri && rtype && strcmp(rtype, "code") == 0) {
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xs *app = app_get(cid);
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if (app != NULL) {
const char *host = xs_dict_get(srv_config, "host");
if (xs_is_null(state))
state = "";
*body = xs_fmt(login_page, host, "", host, ruri, cid, state, USER_AGENT);
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*ctype = "text/html";
status = 200;
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srv_debug(0, xs_fmt("oauth authorize: generating login page"));
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}
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else
srv_debug(0, xs_fmt("oauth authorize: bad client_id %s", cid));
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}
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else
srv_debug(0, xs_fmt("oauth authorize: invalid or unset arguments"));
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}
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return status;
}
int oauth_post_handler(const xs_dict *req, const char *q_path,
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const char *payload, int p_size,
char **body, int *b_size, char **ctype)
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{
if (!xs_startswith(q_path, "/oauth/"))
return 0;
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/* {
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xs *j = xs_json_dumps_pp(req, 4);
printf("oauth post:\n%s\n", j);
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}*/
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int status = 404;
char *i_ctype = xs_dict_get(req, "content-type");
xs *args = NULL;
if (i_ctype && xs_startswith(i_ctype, "application/json"))
args = xs_json_loads(payload);
else
args = xs_dup(xs_dict_get(req, "p_vars"));
xs *cmd = xs_replace(q_path, "/oauth", "");
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srv_debug(1, xs_fmt("oauth_post_handler %s", q_path));
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if (strcmp(cmd, "/x-snac-login") == 0) {
const char *login = xs_dict_get(args, "login");
const char *passwd = xs_dict_get(args, "passwd");
const char *redir = xs_dict_get(args, "redir");
const char *cid = xs_dict_get(args, "cid");
const char *state = xs_dict_get(args, "state");
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const char *host = xs_dict_get(srv_config, "host");
/* by default, generate another login form with an error */
*body = xs_fmt(login_page, host, "LOGIN INCORRECT", host, redir, cid, state, USER_AGENT);
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*ctype = "text/html";
status = 200;
if (login && passwd && redir && cid) {
snac snac;
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if (user_open(&snac, login)) {
/* check the login + password */
if (check_password(login, passwd,
xs_dict_get(snac.config, "passwd"))) {
/* success! redirect to the desired uri */
xs *code = random_str();
xs_free(*body);
*body = xs_fmt("%s?code=%s", redir, code);
status = 303;
/* if there is a state, add it */
if (!xs_is_null(state) && *state) {
*body = xs_str_cat(*body, "&state=");
*body = xs_str_cat(*body, state);
}
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srv_log(xs_fmt("oauth x-snac-login: '%s' success, redirect to %s",
login, *body));
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/* assign the login to the app */
xs *app = app_get(cid);
if (app != NULL) {
app = xs_dict_set(app, "uid", login);
app = xs_dict_set(app, "code", code);
app_add(cid, app);
}
else
srv_log(xs_fmt("oauth x-snac-login: error getting app %s", cid));
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}
else
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srv_debug(1, xs_fmt("oauth x-snac-login: login '%s' incorrect", login));
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user_free(&snac);
}
else
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srv_debug(1, xs_fmt("oauth x-snac-login: bad user '%s'", login));
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}
else
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srv_debug(1, xs_fmt("oauth x-snac-login: invalid or unset arguments"));
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}
else
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if (strcmp(cmd, "/token") == 0) {
xs *wrk = NULL;
const char *gtype = xs_dict_get(args, "grant_type");
const char *code = xs_dict_get(args, "code");
const char *cid = xs_dict_get(args, "client_id");
const char *csec = xs_dict_get(args, "client_secret");
const char *ruri = xs_dict_get(args, "redirect_uri");
/* FIXME: this 'scope' parameter is mandatory for the official Mastodon API,
but if it's enabled, it makes it crash after some more steps, which
is FAR WORSE */
// const char *scope = xs_dict_get(args, "scope");
const char *scope = NULL;
/* no client_secret? check if it's inside an authorization header
(AndStatus does it this way) */
if (xs_is_null(csec)) {
const char *auhdr = xs_dict_get(req, "authorization");
if (!xs_is_null(auhdr) && xs_startswith(auhdr, "Basic ")) {
xs *s1 = xs_replace(auhdr, "Basic ", "");
int size;
xs *s2 = xs_base64_dec(s1, &size);
if (!xs_is_null(s2)) {
xs *l1 = xs_split(s2, ":");
if (xs_list_len(l1) == 2) {
wrk = xs_dup(xs_list_get(l1, 1));
csec = wrk;
}
}
}
}
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if (gtype && code && cid && csec && ruri) {
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xs *app = app_get(cid);
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if (app == NULL) {
status = 401;
srv_log(xs_fmt("oauth token: invalid app %s", cid));
}
else
if (strcmp(csec, xs_dict_get(app, "client_secret")) != 0) {
status = 401;
srv_log(xs_fmt("oauth token: invalid client_secret for app %s", cid));
}
else {
xs *rsp = xs_dict_new();
xs *cat = xs_number_new(time(NULL));
xs *tokid = random_str();
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rsp = xs_dict_append(rsp, "access_token", tokid);
rsp = xs_dict_append(rsp, "token_type", "Bearer");
rsp = xs_dict_append(rsp, "created_at", cat);
if (!xs_is_null(scope))
rsp = xs_dict_append(rsp, "scope", scope);
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*body = xs_json_dumps_pp(rsp, 4);
*ctype = "application/json";
status = 200;
const char *uid = xs_dict_get(app, "uid");
srv_debug(0, xs_fmt("oauth token: "
"successful login for %s, new token %s", uid, tokid));
xs *token = xs_dict_new();
token = xs_dict_append(token, "token", tokid);
token = xs_dict_append(token, "client_id", cid);
token = xs_dict_append(token, "client_secret", csec);
token = xs_dict_append(token, "uid", uid);
token = xs_dict_append(token, "code", code);
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token_add(tokid, token);
}
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}
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else {
srv_debug(0, xs_fmt("oauth token: invalid or unset arguments"));
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status = 400;
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}
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}
else
if (strcmp(cmd, "/revoke") == 0) {
const char *cid = xs_dict_get(args, "client_id");
const char *csec = xs_dict_get(args, "client_secret");
const char *tokid = xs_dict_get(args, "token");
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if (cid && csec && tokid) {
xs *token = token_get(tokid);
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*body = xs_str_new("{}");
*ctype = "application/json";
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if (token == NULL || strcmp(csec, xs_dict_get(token, "client_secret")) != 0) {
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srv_debug(1, xs_fmt("oauth revoke: bad secret for token %s", tokid));
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status = 403;
}
else {
token_del(tokid);
srv_debug(0, xs_fmt("oauth revoke: revoked token %s", tokid));
status = 200;
/* also delete the app, as it serves no purpose from now on */
app_del(cid);
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}
}
else {
srv_debug(0, xs_fmt("oauth revoke: invalid or unset arguments"));
status = 403;
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}
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}
return status;
}
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xs_str *mastoapi_id(const xs_dict *msg)
/* returns a somewhat Mastodon-compatible status id */
{
const char *id = xs_dict_get(msg, "id");
xs *md5 = xs_md5_hex(id, strlen(id));
return xs_fmt("%10.0f%s", object_ctime_by_md5(md5), md5);
}
#define MID_TO_MD5(id) (id + 10)
xs_dict *mastoapi_account(const xs_dict *actor)
/* converts an ActivityPub actor to a Mastodon account */
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{
xs_dict *acct = xs_dict_new();
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const char *display_name = xs_dict_get(actor, "name");
if (xs_is_null(display_name) || *display_name == '\0')
display_name = xs_dict_get(actor, "preferredUsername");
const char *id = xs_dict_get(actor, "id");
const char *pub = xs_dict_get(actor, "published");
xs *acct_md5 = xs_md5_hex(id, strlen(id));
acct = xs_dict_append(acct, "id", acct_md5);
acct = xs_dict_append(acct, "username", xs_dict_get(actor, "preferredUsername"));
acct = xs_dict_append(acct, "acct", xs_dict_get(actor, "preferredUsername"));
acct = xs_dict_append(acct, "display_name", display_name);
if (pub)
acct = xs_dict_append(acct, "created_at", pub);
else {
/* unset created_at crashes Tusky, so lie like a mf */
xs *date = xs_str_utctime(0, "%Y-%m-%dT%H:%M:%SZ");
acct = xs_dict_append(acct, "created_at", date);
}
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acct = xs_dict_append(acct, "note", xs_dict_get(actor, "summary"));
acct = xs_dict_append(acct, "url", id);
xs *avatar = NULL;
xs_dict *av = xs_dict_get(actor, "icon");
if (xs_type(av) == XSTYPE_DICT)
avatar = xs_dup(xs_dict_get(av, "url"));
else
avatar = xs_fmt("%s/susie.png", srv_baseurl);
acct = xs_dict_append(acct, "avatar", avatar);
return acct;
}
xs_dict *mastoapi_status(snac *snac, const xs_dict *msg)
/* converts an ActivityPub note to a Mastodon status */
{
xs *actor = NULL;
actor_get(snac, xs_dict_get(msg, "attributedTo"), &actor);
/* if the author is not here, discard */
if (actor == NULL)
return NULL;
xs *acct = mastoapi_account(actor);
/** shave the yak converting an ActivityPub Note to a Mastodon status **/
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xs *f = xs_val_new(XSTYPE_FALSE);
xs *t = xs_val_new(XSTYPE_TRUE);
xs *n = xs_val_new(XSTYPE_NULL);
xs *el = xs_list_new();
xs *idx = NULL;
xs *ixc = NULL;
char *tmp;
char *id = xs_dict_get(msg, "id");
xs *mid = mastoapi_id(msg);
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xs_dict *st = xs_dict_new();
st = xs_dict_append(st, "id", mid);
st = xs_dict_append(st, "uri", id);
st = xs_dict_append(st, "url", id);
st = xs_dict_append(st, "created_at", xs_dict_get(msg, "published"));
st = xs_dict_append(st, "account", acct);
st = xs_dict_append(st, "content", xs_dict_get(msg, "content"));
st = xs_dict_append(st, "visibility",
is_msg_public(snac, msg) ? "public" : "private");
tmp = xs_dict_get(msg, "sensitive");
if (xs_is_null(tmp))
tmp = f;
st = xs_dict_append(st, "sensitive", tmp);
tmp = xs_dict_get(msg, "summary");
if (xs_is_null(tmp))
tmp = "";
st = xs_dict_append(st, "spoiler_text", tmp);
/* create the list of attachments */
xs *matt = xs_list_new();
xs_list *att = xs_dict_get(msg, "attachment");
xs_str *aobj;
while (xs_list_iter(&att, &aobj)) {
const char *mtype = xs_dict_get(aobj, "mediaType");
if (!xs_is_null(mtype) && xs_startswith(mtype, "image/")) {
xs *matteid = xs_fmt("%s_%d", id, xs_list_len(matt));
xs *matte = xs_dict_new();
matte = xs_dict_append(matte, "id", matteid);
matte = xs_dict_append(matte, "type", "image");
matte = xs_dict_append(matte, "url", xs_dict_get(aobj, "url"));
matte = xs_dict_append(matte, "preview_url", xs_dict_get(aobj, "url"));
matte = xs_dict_append(matte, "remote_url", xs_dict_get(aobj, "url"));
const char *name = xs_dict_get(aobj, "name");
if (xs_is_null(name))
name = "";
matte = xs_dict_append(matte, "description", name);
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matt = xs_list_append(matt, matte);
}
}
st = xs_dict_append(st, "media_attachments", matt);
st = xs_dict_append(st, "mentions", el);
st = xs_dict_append(st, "tags", el);
st = xs_dict_append(st, "emojis", el);
xs_free(idx);
xs_free(ixc);
idx = object_likes(id);
ixc = xs_number_new(xs_list_len(idx));
st = xs_dict_append(st, "favourites_count", ixc);
st = xs_dict_append(st, "favourited",
xs_list_in(idx, snac->md5) != -1 ? t : f);
xs_free(idx);
xs_free(ixc);
idx = object_announces(id);
ixc = xs_number_new(xs_list_len(idx));
st = xs_dict_append(st, "reblogs_count", ixc);
st = xs_dict_append(st, "reblogged",
xs_list_in(idx, snac->md5) != -1 ? t : f);
xs_free(idx);
xs_free(ixc);
idx = object_children(id);
ixc = xs_number_new(xs_list_len(idx));
st = xs_dict_append(st, "replies_count", ixc);
/* default in_reply_to values */
st = xs_dict_append(st, "in_reply_to_id", n);
st = xs_dict_append(st, "in_reply_to_account_id", n);
tmp = xs_dict_get(msg, "inReplyTo");
if (!xs_is_null(tmp)) {
xs *irto = NULL;
if (valid_status(object_get(tmp, &irto))) {
xs *irt_mid = mastoapi_id(irto);
st = xs_dict_set(st, "in_reply_to_id", irt_mid);
char *at = NULL;
if (!xs_is_null(at = xs_dict_get(irto, "attributedTo"))) {
xs *at_md5 = xs_md5_hex(at, strlen(at));
st = xs_dict_set(st, "in_reply_to_account_id", at_md5);
}
}
}
st = xs_dict_append(st, "reblog", n);
st = xs_dict_append(st, "poll", n);
st = xs_dict_append(st, "card", n);
st = xs_dict_append(st, "language", n);
tmp = xs_dict_get(msg, "sourceContent");
if (xs_is_null(tmp))
tmp = "";
st = xs_dict_append(st, "text", tmp);
tmp = xs_dict_get(msg, "updated");
if (xs_is_null(tmp))
tmp = n;
st = xs_dict_append(st, "edited_at", tmp);
return st;
}
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int process_auth_token(snac *snac, const xs_dict *req)
/* processes an authorization token, if there is one */
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{
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int logged_in = 0;
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char *v;
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/* if there is an authorization field, try to validate it */
if (!xs_is_null(v = xs_dict_get(req, "authorization")) && xs_startswith(v, "Bearer ")) {
xs *tokid = xs_replace(v, "Bearer ", "");
xs *token = token_get(tokid);
if (token != NULL) {
const char *uid = xs_dict_get(token, "uid");
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if (!xs_is_null(uid) && user_open(snac, uid)) {
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logged_in = 1;
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srv_debug(2, xs_fmt("mastoapi auth: valid token for user %s", uid));
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}
else
srv_log(xs_fmt("mastoapi auth: corrupted token %s", tokid));
}
else
srv_log(xs_fmt("mastoapi auth: invalid token %s", tokid));
}
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return logged_in;
}
int mastoapi_get_handler(const xs_dict *req, const char *q_path,
char **body, int *b_size, char **ctype)
{
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if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
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return 0;
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srv_debug(1, xs_fmt("mastoapi_get_handler %s", q_path));
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/* {
xs *j = xs_json_dumps_pp(req, 4);
printf("mastoapi get:\n%s\n", j);
}*/
int status = 404;
xs_dict *args = xs_dict_get(req, "q_vars");
xs *cmd = xs_replace(q_path, "/api", "");
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snac snac1 = {0};
int logged_in = process_auth_token(&snac1, req);
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if (strcmp(cmd, "/v1/accounts/verify_credentials") == 0) {
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if (logged_in) {
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xs *acct = xs_dict_new();
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acct = xs_dict_append(acct, "id", xs_dict_get(snac1.config, "uid"));
acct = xs_dict_append(acct, "username", xs_dict_get(snac1.config, "uid"));
acct = xs_dict_append(acct, "acct", xs_dict_get(snac1.config, "uid"));
acct = xs_dict_append(acct, "display_name", xs_dict_get(snac1.config, "name"));
acct = xs_dict_append(acct, "created_at", xs_dict_get(snac1.config, "published"));
acct = xs_dict_append(acct, "note", xs_dict_get(snac1.config, "bio"));
acct = xs_dict_append(acct, "url", snac1.actor);
acct = xs_dict_append(acct, "header", "");
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xs *avatar = NULL;
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char *av = xs_dict_get(snac1.config, "avatar");
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if (xs_is_null(av) || *av == '\0')
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avatar = xs_fmt("%s/susie.png", srv_baseurl);
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else
avatar = xs_dup(av);
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acct = xs_dict_append(acct, "avatar", avatar);
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*body = xs_json_dumps_pp(acct, 4);
*ctype = "application/json";
status = 200;
}
else {
status = 422; // "Unprocessable entity" (no login)
}
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}
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else
if (strcmp(cmd, "/v1/accounts/relationships") == 0) {
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/* find if an account is followed, blocked, etc. */
/* the account to get relationships about is in args "id[]" */
if (logged_in) {
xs *res = xs_list_new();
const char *md5 = xs_dict_get(args, "id[]");
xs *actor_o = NULL;
if (!xs_is_null(md5) && valid_status(object_get_by_md5(md5, &actor_o))) {
xs *rel = xs_dict_new();
xs *t = xs_val_new(XSTYPE_TRUE);
xs *f = xs_val_new(XSTYPE_FALSE);
const char *actor = xs_dict_get(actor_o, "id");
rel = xs_dict_append(rel, "id", md5);
rel = xs_dict_append(rel, "following",
following_check(&snac1, actor) ? t : f);
rel = xs_dict_append(rel, "showing_reblogs", t);
rel = xs_dict_append(rel, "notifying", f);
rel = xs_dict_append(rel, "followed_by",
follower_check(&snac1, actor) ? t : f);
rel = xs_dict_append(rel, "blocking",
is_muted(&snac1, actor) ? t : f);
rel = xs_dict_append(rel, "muting", f);
rel = xs_dict_append(rel, "muting_notifications", f);
rel = xs_dict_append(rel, "requested", f);
rel = xs_dict_append(rel, "domain_blocking", f);
rel = xs_dict_append(rel, "endorsed", f);
rel = xs_dict_append(rel, "note", "");
res = xs_list_append(res, rel);
}
*body = xs_json_dumps_pp(res, 4);
*ctype = "application/json";
status = 200;
}
else
status = 422;
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}
else
if (xs_startswith(cmd, "/v1/accounts/")) {
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/* account-related information */
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xs *l = xs_split(cmd, "/");
const char *uid = xs_list_get(l, 3);
const char *opt = xs_list_get(l, 4);
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if (uid != NULL) {
snac snac2;
xs *out = NULL;
xs *actor = NULL;
/* is it a local user? */
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if (user_open(&snac2, uid) || user_open_by_md5(&snac2, uid)) {
if (opt == NULL) {
/* account information */
actor = msg_actor(&snac2);
out = mastoapi_account(actor);
}
else
if (strcmp(opt, "statuses") == 0) {
/* the public list of posts of a user */
xs *timeline = timeline_simple_list(&snac2, "public", 0, 256);
xs_list *p = timeline;
xs_str *v;
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out = xs_list_new();
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while (xs_list_iter(&p, &v)) {
xs *msg = NULL;
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if (valid_status(timeline_get_by_md5(&snac2, v, &msg))) {
/* add only posts by the author */
if (strcmp(xs_dict_get(msg, "type"), "Note") == 0 &&
xs_startswith(xs_dict_get(msg, "id"), snac2.actor)) {
xs *st = mastoapi_status(&snac2, msg);
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out = xs_list_append(out, st);
}
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}
}
}
user_free(&snac2);
}
else {
/* try the uid as the md5 of a possibly loaded actor */
if (logged_in && valid_status(object_get_by_md5(uid, &actor))) {
if (opt == NULL) {
/* account information */
out = mastoapi_account(actor);
}
else
if (strcmp(opt, "statuses") == 0) {
/* we don't serve statuses of others; return the empty list */
out = xs_list_new();
}
}
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}
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if (out != NULL) {
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*body = xs_json_dumps_pp(out, 4);
*ctype = "application/json";
status = 200;
}
}
}
else
if (strcmp(cmd, "/v1/timelines/home") == 0) {
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/* the private timeline */
if (logged_in) {
const char *max_id = xs_dict_get(args, "max_id");
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const char *since_id = xs_dict_get(args, "since_id");
const char *min_id = xs_dict_get(args, "min_id");
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const char *limit_s = xs_dict_get(args, "limit");
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int limit = 0;
int cnt = 0;
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if (!xs_is_null(limit_s))
limit = atoi(limit_s);
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if (limit == 0)
limit = 20;
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xs *timeline = timeline_simple_list(&snac1, "private", 0, XS_ALL);
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xs *out = xs_list_new();
xs_list *p = timeline;
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xs_str *v;
while (xs_list_iter(&p, &v) && cnt < limit) {
xs *msg = NULL;
/* only return entries older that max_id */
if (max_id) {
if (strcmp(v, max_id) == 0)
max_id = NULL;
continue;
}
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/* only returns entries newer than since_id */
if (since_id) {
if (strcmp(v, since_id) == 0)
break;
}
/* only returns entries newer than min_id */
/* what does really "Return results immediately newer than ID" mean? */
if (min_id) {
if (strcmp(v, min_id) == 0)
break;
}
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/* get the entry */
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if (!valid_status(timeline_get_by_md5(&snac1, v, &msg)))
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continue;
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/* discard non-Notes */
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if (strcmp(xs_dict_get(msg, "type"), "Note") != 0)
continue;
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/* convert the Note into a Mastodon status */
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xs *st = mastoapi_status(&snac1, msg);
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if (st != NULL)
out = xs_list_append(out, st);
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cnt++;
}
*body = xs_json_dumps_pp(out, 4);
*ctype = "application/json";
status = 200;
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{
xs *j = xs_json_loads(*body);
if (j == NULL) {
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srv_log(xs_fmt("mastoapi timeline: bad JSON"));
srv_archive_error("mastoapi_timeline", "bad JSON", req, *body);
}
}
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srv_debug(2, xs_fmt("mastoapi timeline: returned %d entries", xs_list_len(out)));
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}
else {
status = 401; // unauthorized
}
}
else
if (strcmp(cmd, "/v1/timelines/public") == 0) {
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/* the public timeline (public timelines for all users) */
/* TBD */
*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/conversations") == 0) {
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/* TBD */
*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/notifications") == 0) {
if (logged_in) {
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xs *l = notify_list(&snac1, 0);
xs *out = xs_list_new();
xs_list *p = l;
xs_dict *v;
while (xs_list_iter(&p, &v)) {
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xs *noti = notify_get(&snac1, v);
if (noti == NULL)
continue;
const char *type = xs_dict_get(noti, "type");
const char *objid = xs_dict_get(noti, "objid");
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xs *actor = NULL;
xs *entry = NULL;
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if (!valid_status(object_get(xs_dict_get(noti, "actor"), &actor)))
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continue;
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if (objid != NULL && !valid_status(object_get(objid, &entry)))
continue;
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if (is_hidden(&snac1, objid))
continue;
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/* convert the type */
if (strcmp(type, "Like") == 0)
type = "favourite";
else
if (strcmp(type, "Announce") == 0)
type = "reblog";
else
if (strcmp(type, "Follow") == 0)
type = "follow";
else
if (strcmp(type, "Create") == 0)
type = "mention";
else
continue;
xs *mn = xs_dict_new();
mn = xs_dict_append(mn, "type", type);
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xs *id = xs_replace(xs_dict_get(noti, "id"), ".", "");
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mn = xs_dict_append(mn, "id", id);
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mn = xs_dict_append(mn, "created_at", xs_dict_get(noti, "date"));
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xs *acct = mastoapi_account(actor);
mn = xs_dict_append(mn, "account", acct);
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if (strcmp(type, "follow") != 0 && !xs_is_null(objid)) {
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xs *st = mastoapi_status(&snac1, entry);
mn = xs_dict_append(mn, "status", st);
}
out = xs_list_append(out, mn);
}
*body = xs_json_dumps_pp(out, 4);
*ctype = "application/json";
status = 200;
}
else
status = 401;
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}
else
if (strcmp(cmd, "/v1/filters") == 0) {
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/* snac will never have filters */
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*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/favourites") == 0) {
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/* snac will never support a list of favourites */
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*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/bookmarks") == 0) {
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/* snac does not support bookmarks */
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*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/lists") == 0) {
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/* snac does not support lists */
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*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/scheduled_statuses") == 0) {
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/* snac does not scheduled notes */
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*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/follow_requests") == 0) {
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/* snac does not support optional follow confirmations */
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*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/announcements") == 0) {
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/* snac has no announcements (yet?) */
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*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/custom_emojis") == 0) {
2023-04-11 21:16:12 +03:00
/* are you kidding me? */
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*body = xs_dup("[]");
*ctype = "application/json";
status = 200;
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}
2023-04-10 17:08:26 +03:00
else
if (strcmp(cmd, "/v1/instance") == 0) {
2023-04-10 17:08:26 +03:00
/* returns an instance object */
xs *ins = xs_dict_new();
const char *host = xs_dict_get(srv_config, "host");
ins = xs_dict_append(ins, "uri", host);
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ins = xs_dict_append(ins, "domain", host);
ins = xs_dict_append(ins, "title", host);
ins = xs_dict_append(ins, "version", "4.0.0 (not true; really " USER_AGENT ")");
ins = xs_dict_append(ins, "source_url", "https:/" "/comam.es/what-is-snac");
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ins = xs_dict_append(ins, "description", host);
ins = xs_dict_append(ins, "short_description", host);
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xs *susie = xs_fmt("%s/susie.png", srv_baseurl);
ins = xs_dict_append(ins, "thumbnail", susie);
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const char *v = xs_dict_get(srv_config, "admin_email");
if (xs_is_null(v) || *v == '\0')
v = "admin@localhost";
ins = xs_dict_append(ins, "email", v);
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xs *l1 = xs_list_new();
ins = xs_dict_append(ins, "rules", l1);
l1 = xs_list_append(l1, "en");
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ins = xs_dict_append(ins, "languages", l1);
xs *d1 = xs_dict_new();
ins = xs_dict_append(ins, "urls", d1);
ins = xs_dict_append(ins, "configuration", d1);
xs *z = xs_number_new(0);
d1 = xs_dict_append(d1, "user_count", z);
d1 = xs_dict_append(d1, "status_count", z);
d1 = xs_dict_append(d1, "domain_count", z);
ins = xs_dict_append(ins, "stats", d1);
xs *f = xs_val_new(XSTYPE_FALSE);
ins = xs_dict_append(ins, "registrations", f);
ins = xs_dict_append(ins, "approval_required", f);
ins = xs_dict_append(ins, "invites_enabled", f);
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/* {
snac snac;
user_open(&snac, "test1");
xs *actor = msg_actor(&snac);
xs *acc = mastoapi_account(actor);
ins = xs_dict_append(ins, "contact_account", acc);
user_free(&snac);
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}*/
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*body = xs_json_dumps_pp(ins, 4);
*ctype = "application/json";
status = 200;
}
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else
if (xs_startswith(cmd, "/v1/statuses/")) {
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/* operations on a status */
xs *l = xs_split(cmd, "/");
const char *id = xs_list_get(l, 3);
const char *op = xs_list_get(l, 4);
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if (!xs_is_null(id)) {
xs *msg = NULL;
xs *out = NULL;
/* skip the 'fake' part of the id */
id = MID_TO_MD5(id);
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if (valid_status(timeline_get_by_md5(&snac1, id, &msg))) {
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if (op == NULL) {
/* return the status itself */
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out = mastoapi_status(&snac1, msg);
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}
else
if (strcmp(op, "context") == 0) {
/* return ancestors and children */
xs *anc = xs_list_new();
xs *des = xs_list_new();
xs_list *p;
xs_str *v;
char pid[64];
/* build the [grand]parent list, moving up */
strncpy(pid, id, sizeof(pid));
while (object_parent(pid, pid, sizeof(pid))) {
xs *m2 = NULL;
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if (valid_status(timeline_get_by_md5(&snac1, pid, &m2))) {
xs *st = mastoapi_status(&snac1, m2);
anc = xs_list_insert(anc, 0, st);
}
else
break;
}
/* build the children list */
xs *children = object_children(xs_dict_get(msg, "id"));
p = children;
while (xs_list_iter(&p, &v)) {
xs *m2 = NULL;
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if (valid_status(timeline_get_by_md5(&snac1, v, &m2))) {
xs *st = mastoapi_status(&snac1, m2);
des = xs_list_append(des, st);
}
}
out = xs_dict_new();
out = xs_dict_append(out, "ancestors", anc);
out = xs_dict_append(out, "descendants", des);
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}
else
if (strcmp(op, "reblogged_by") == 0 ||
strcmp(op, "favourited_by") == 0) {
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/* return the list of people who liked or boosted this */
out = xs_list_new();
xs *l = NULL;
if (op[0] == 'r')
l = object_announces(xs_dict_get(msg, "id"));
else
l = object_likes(xs_dict_get(msg, "id"));
xs_list *p = l;
xs_str *v;
while (xs_list_iter(&p, &v)) {
xs *actor2 = NULL;
if (valid_status(object_get_by_md5(v, &actor2))) {
xs *acct2 = mastoapi_account(actor2);
out = xs_list_append(out, acct2);
}
}
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}
}
else
2023-04-13 10:59:00 +03:00
srv_debug(1, xs_fmt("mastoapi status: bad id %s", id));
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if (out != NULL) {
*body = xs_json_dumps_pp(out, 4);
*ctype = "application/json";
status = 200;
}
}
}
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else
if (strcmp(cmd, "/v1/filters") == 0) {
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*body = xs_dup("[]");
*ctype = "application/json";
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status = 200;
}
else
if (strcmp(cmd, "/v1/preferences") == 0) {
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*body = xs_dup("{}");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/markers") == 0) {
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*body = xs_dup("{}");
*ctype = "application/json";
status = 200;
}
else
if (strcmp(cmd, "/v1/followed_tags") == 0) {
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*body = xs_dup("[]");
*ctype = "application/json";
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status = 200;
}
else
if (strcmp(cmd, "/v2/search") == 0) {
const char *q = xs_dict_get(args, "q");
const char *type = xs_dict_get(args, "type");
const char *offset = xs_dict_get(args, "offset");
xs *acl = xs_list_new();
xs *stl = xs_list_new();
xs *htl = xs_list_new();
xs *res = xs_dict_new();
if (xs_is_null(offset) || strcmp(offset, "0") == 0) {
/* reply something only for offset 0; otherwise,
apps like Tusky keep asking again and again */
if (!xs_is_null(q) && strcmp(type, "accounts") == 0) {
/* do a webfinger query */
char *actor = NULL;
char *user = NULL;
if (valid_status(webfinger_request(q, &actor, &user))) {
xs *actor_o = NULL;
if (valid_status(actor_request(&snac1, actor, &actor_o))) {
xs *acct = mastoapi_account(actor_o);
acl = xs_list_append(acl, acct);
}
}
}
}
res = xs_dict_append(res, "accounts", acl);
res = xs_dict_append(res, "statuses", stl);
res = xs_dict_append(res, "hashtags", htl);
*body = xs_json_dumps_pp(res, 4);
*ctype = "application/json";
status = 200;
}
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/* user cleanup */
if (logged_in)
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user_free(&snac1);
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return status;
}
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int mastoapi_post_handler(const xs_dict *req, const char *q_path,
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const char *payload, int p_size,
char **body, int *b_size, char **ctype)
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{
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if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
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return 0;
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srv_debug(1, xs_fmt("mastoapi_post_handler %s", q_path));
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/* {
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xs *j = xs_json_dumps_pp(req, 4);
printf("mastoapi post:\n%s\n", j);
}*/
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int status = 404;
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xs *args = NULL;
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char *i_ctype = xs_dict_get(req, "content-type");
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if (i_ctype && xs_startswith(i_ctype, "application/json"))
args = xs_json_loads(payload);
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else
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args = xs_dup(xs_dict_get(req, "p_vars"));
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if (args == NULL)
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return 400;
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/* {
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xs *j = xs_json_dumps_pp(args, 4);
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printf("%s\n", j);
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}*/
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xs *cmd = xs_replace(q_path, "/api", "");
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snac snac = {0};
int logged_in = process_auth_token(&snac, req);
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if (strcmp(cmd, "/v1/apps") == 0) {
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const char *name = xs_dict_get(args, "client_name");
const char *ruri = xs_dict_get(args, "redirect_uris");
const char *scope = xs_dict_get(args, "scope");
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if (xs_type(ruri) == XSTYPE_LIST)
ruri = xs_dict_get(ruri, 0);
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if (name && ruri) {
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xs *app = xs_dict_new();
xs *id = xs_replace_i(tid(0), ".", "");
xs *cid = random_str();
xs *csec = random_str();
xs *vkey = random_str();
app = xs_dict_append(app, "name", name);
app = xs_dict_append(app, "redirect_uri", ruri);
app = xs_dict_append(app, "client_id", cid);
app = xs_dict_append(app, "client_secret", csec);
app = xs_dict_append(app, "vapid_key", vkey);
app = xs_dict_append(app, "id", id);
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*body = xs_json_dumps_pp(app, 4);
*ctype = "application/json";
status = 200;
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app = xs_dict_append(app, "code", "");
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if (scope)
app = xs_dict_append(app, "scope", scope);
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app_add(cid, app);
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srv_debug(0, xs_fmt("mastoapi apps: new app %s", cid));
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}
}
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else
if (strcmp(cmd, "/v1/statuses") == 0) {
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if (logged_in) {
/* post a new Note */
/* {
xs *j = xs_json_dumps_pp(args, 4);
printf("%s\n", j);
}*/
const char *content = xs_dict_get(args, "status");
const char *mid = xs_dict_get(args, "in_reply_to_id");
const char *visibility = xs_dict_get(args, "visibility");
const char *summary = xs_dict_get(args, "spoiler_text");
const char *media_ids = xs_dict_get(args, "media_ids");
if (xs_is_null(media_ids))
media_ids = xs_dict_get(args, "media_ids[]");
xs *attach_list = xs_list_new();
xs *irt = NULL;
/* is it a reply? */
if (mid != NULL) {
xs *r_msg = NULL;
const char *md5 = MID_TO_MD5(mid);
if (valid_status(object_get_by_md5(md5, &r_msg)))
irt = xs_dup(xs_dict_get(r_msg, "id"));
}
/* does it have attachments? */
if (!xs_is_null(media_ids)) {
xs *mi = NULL;
if (xs_type(media_ids) == XSTYPE_LIST)
mi = xs_dup(media_ids);
else {
mi = xs_list_new();
mi = xs_list_append(mi, media_ids);
}
xs_list *p = mi;
xs_str *v;
while (xs_list_iter(&p, &v)) {
xs *l = xs_list_new();
xs *url = xs_fmt("%s/s/%s", snac.actor, v);
xs *desc = static_get_meta(&snac, v);
l = xs_list_append(l, url);
l = xs_list_append(l, desc);
attach_list = xs_list_append(attach_list, l);
}
}
/* prepare the message */
xs *msg = msg_note(&snac, content, NULL, irt, attach_list,
strcmp(visibility, "public") == 0 ? 0 : 1);
if (!xs_is_null(summary) && *summary) {
xs *t = xs_val_new(XSTYPE_TRUE);
msg = xs_dict_set(msg, "sensitive", t);
msg = xs_dict_set(msg, "summary", summary);
}
/* store */
timeline_add(&snac, xs_dict_get(msg, "id"), msg);
/* 'Create' message */
xs *c_msg = msg_create(&snac, msg);
enqueue_message(&snac, c_msg);
timeline_touch(&snac);
/* convert to a mastodon status as a response code */
xs *st = mastoapi_status(&snac, msg);
*body = xs_json_dumps_pp(st, 4);
*ctype = "application/json";
status = 200;
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}
else
status = 401;
}
else
if (xs_startswith(cmd, "/v1/statuses")) {
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if (logged_in) {
/* operations on a status */
xs *l = xs_split(cmd, "/");
const char *mid = xs_list_get(l, 3);
const char *op = xs_list_get(l, 4);
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if (!xs_is_null(mid)) {
xs *msg = NULL;
xs *out = NULL;
/* skip the 'fake' part of the id */
mid = MID_TO_MD5(mid);
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if (valid_status(timeline_get_by_md5(&snac, mid, &msg))) {
char *id = xs_dict_get(msg, "id");
if (op == NULL) {
/* no operation (?) */
}
else
if (strcmp(op, "favourite") == 0) {
xs *n_msg = msg_admiration(&snac, id, "Like");
if (n_msg != NULL) {
enqueue_message(&snac, n_msg);
timeline_admire(&snac, xs_dict_get(n_msg, "object"), snac.actor, 1);
out = mastoapi_status(&snac, msg);
}
}
else
if (strcmp(op, "unfavourite") == 0) {
/* snac does not support Undo+Like */
}
else
if (strcmp(op, "reblog") == 0) {
xs *n_msg = msg_admiration(&snac, id, "Announce");
if (n_msg != NULL) {
enqueue_message(&snac, n_msg);
timeline_admire(&snac, xs_dict_get(n_msg, "object"), snac.actor, 0);
out = mastoapi_status(&snac, msg);
}
}
else
if (strcmp(op, "unreblog") == 0) {
/* snac does not support Undo+Announce */
}
else
if (strcmp(op, "bookmark") == 0) {
/* snac does not support bookmarks */
}
else
if (strcmp(op, "unbookmark") == 0) {
/* snac does not support bookmarks */
}
else
if (strcmp(op, "pin") == 0) {
/* snac does not support pinning */
}
else
if (strcmp(op, "unpin") == 0) {
/* snac does not support pinning */
}
else
if (strcmp(op, "mute") == 0) {
/* Mastodon's mute is snac's hide */
}
else
if (strcmp(op, "unmute") == 0) {
/* Mastodon's unmute is snac's unhide */
}
}
if (out != NULL) {
*body = xs_json_dumps_pp(out, 4);
*ctype = "application/json";
status = 200;
}
}
}
else
status = 401;
}
else
if (strcmp(cmd, "/v1/notifications/clear") == 0) {
if (logged_in) {
notify_clear(&snac);
timeline_touch(&snac);
*body = xs_dup("{}");
*ctype = "application/json";
status = 200;
}
else
status = 401;
}
else
if (strcmp(cmd, "/v1/push/subscription") == 0) {
/* I don't know what I'm doing */
if (logged_in) {
char *v;
xs *wpush = xs_dict_new();
wpush = xs_dict_append(wpush, "id", "1");
v = xs_dict_get(args, "data");
v = xs_dict_get(v, "alerts");
wpush = xs_dict_append(wpush, "alerts", v);
v = xs_dict_get(args, "subscription");
v = xs_dict_get(v, "endpoint");
wpush = xs_dict_append(wpush, "endpoint", v);
xs *server_key = random_str();
wpush = xs_dict_append(wpush, "server_key", server_key);
*body = xs_json_dumps_pp(wpush, 4);
*ctype = "application/json";
status = 200;
}
else
status = 401;
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}
else
if (strcmp(cmd, "/v1/media") == 0 || strcmp(cmd, "/v2/media") == 0) {
if (logged_in) {
/* {
xs *j = xs_json_dumps_pp(args, 4);
printf("%s\n", j);
}*/
const xs_list *file = xs_dict_get(args, "file");
const char *desc = xs_dict_get(args, "description");
if (xs_is_null(desc))
desc = "";
status = 400;
if (xs_type(file) == XSTYPE_LIST) {
const char *fn = xs_list_get(file, 0);
if (*fn != '\0') {
char *ext = strrchr(fn, '.');
xs *hash = xs_md5_hex(fn, strlen(fn));
xs *id = xs_fmt("%s%s", hash, ext);
xs *url = xs_fmt("%s/s/%s", snac.actor, id);
int fo = xs_number_get(xs_list_get(file, 1));
int fs = xs_number_get(xs_list_get(file, 2));
/* store */
static_put(&snac, id, payload + fo, fs);
static_put_meta(&snac, id, desc);
/* prepare a response */
xs *rsp = xs_dict_new();
rsp = xs_dict_append(rsp, "id", id);
rsp = xs_dict_append(rsp, "type", "image");
rsp = xs_dict_append(rsp, "url", url);
rsp = xs_dict_append(rsp, "preview_url", url);
rsp = xs_dict_append(rsp, "remote_url", url);
rsp = xs_dict_append(rsp, "description", desc);
*body = xs_json_dumps_pp(rsp, 4);
*ctype = "application/json";
status = 200;
}
}
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}
else
status = 401;
}
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/* user cleanup */
if (logged_in)
user_free(&snac);
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return status;
}
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int mastoapi_put_handler(const xs_dict *req, const char *q_path,
const char *payload, int p_size,
char **body, int *b_size, char **ctype)
{
if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
return 0;
srv_debug(1, xs_fmt("mastoapi_post_handler %s", q_path));
/* {
xs *j = xs_json_dumps_pp(req, 4);
printf("mastoapi put:\n%s\n", j);
}*/
int status = 404;
xs *args = NULL;
char *i_ctype = xs_dict_get(req, "content-type");
if (i_ctype && xs_startswith(i_ctype, "application/json"))
args = xs_json_loads(payload);
else
args = xs_dup(xs_dict_get(req, "p_vars"));
if (args == NULL)
return 400;
xs *cmd = xs_replace(q_path, "/api", "");
snac snac = {0};
int logged_in = process_auth_token(&snac, req);
if (xs_startswith(cmd, "/v1/media") || xs_startswith(cmd, "/v2/media")) {
if (logged_in) {
xs *l = xs_split(cmd, "/");
const char *stid = xs_list_get(l, 3);
if (!xs_is_null(stid)) {
const char *desc = xs_dict_get(args, "description");
/* set the image metadata */
static_put_meta(&snac, stid, desc);
/* prepare a response */
xs *rsp = xs_dict_new();
xs *url = xs_fmt("%s/s/%s", snac.actor, stid);
rsp = xs_dict_append(rsp, "id", stid);
rsp = xs_dict_append(rsp, "type", "image");
rsp = xs_dict_append(rsp, "url", url);
rsp = xs_dict_append(rsp, "preview_url", url);
rsp = xs_dict_append(rsp, "remote_url", url);
rsp = xs_dict_append(rsp, "description", desc);
*body = xs_json_dumps_pp(rsp, 4);
*ctype = "application/json";
status = 200;
}
}
else
status = 401;
}
/* user cleanup */
if (logged_in)
user_free(&snac);
return status;
}
#endif /* #ifndef NO_MASTODON_API */