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activitypub.c
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/* snac - A simple, minimalistic ActivityPub instance */
/* copyright (c) 2022 grunfink - MIT license */
#include "xs.h"
#include "xs_encdec.h"
#include "xs_json.h"
#include "xs_curl.h"
#include "xs_mime.h"
#include "xs_openssl.h"
#include "xs_regex.h"
#include "xs_time.h"
#include "xs_set.h"
#include "snac.h"
const char *public_address = "https:/" "/www.w3.org/ns/activitystreams#Public";
int activitypub_request(snac *snac, char *url, d_char **data)
/* request an object */
{
int status;
xs *response = NULL;
xs *payload = NULL;
int p_size;
char *ctype;
/* check if it's an url for this same site */
/* ... */
/* get from the net */
response = http_signed_request(snac, "GET", url,
NULL, NULL, 0, &status, &payload, &p_size);
if (valid_status(status)) {
/* ensure it's ActivityPub data */
ctype = xs_dict_get(response, "content-type");
if (xs_str_in(ctype, "application/activity+json") != -1 ||
xs_str_in(ctype, "application/ld+json") != -1)
*data = xs_json_loads(payload);
else
status = 500;
}
if (!valid_status(status))
*data = NULL;
return status;
}
int actor_request(snac *snac, char *actor, d_char **data)
/* request an actor */
{
int status, status2;
xs *payload = NULL;
/* get from disk first */
status = actor_get(snac, actor, data);
if (status == 200)
return status;
/* actor data non-existent or stale: get from the net */
status2 = activitypub_request(snac, actor, &payload);
if (valid_status(status2)) {
/* renew data */
status = actor_add(snac, actor, payload);
if (data != NULL) {
*data = payload;
payload = NULL;
}
}
return status;
}
int timeline_request(snac *snac, char *id, char *referrer)
/* ensures that an entry and its ancestors are in the timeline */
{
int status = 0;
if (!xs_is_null(id)) {
/* is the admired object already there? */
if (!object_here(id)) {
xs *object = NULL;
/* no; download it */
status = activitypub_request(snac, id, &object);
if (valid_status(status)) {
char *type = xs_dict_get(object, "type");
if (!xs_is_null(type) && strcmp(type, "Note") == 0) {
char *actor = xs_dict_get(object, "attributedTo");
/* request (and drop) the actor for this entry */
if (!xs_is_null(actor))
actor_request(snac, actor, NULL);
/* does it have an ancestor? */
char *in_reply_to = xs_dict_get(object, "inReplyTo");
/* recurse! */
timeline_request(snac, in_reply_to, referrer);
/* finally store */
timeline_add(snac, id, object, in_reply_to, referrer);
}
}
}
}
return status;
}
int send_to_inbox(snac *snac, char *inbox, char *msg, d_char **payload, int *p_size)
/* sends a message to an Inbox */
{
int status;
d_char *response;
xs *j_msg = xs_json_dumps_pp(msg, 4);
response = http_signed_request(snac, "POST", inbox,
NULL, j_msg, strlen(j_msg), &status, payload, p_size);
if (status == 400) {
snac_debug(snac, 0, xs_fmt("send_to_inbox error %d (response date: '%s')",
status, xs_dict_get(response, "date")));
}
xs_free(response);
return status;
}
d_char *get_actor_inbox(snac *snac, char *actor)
/* gets an actor's inbox */
{
xs *data = NULL;
char *v = NULL;
if (valid_status(actor_request(snac, actor, &data))) {
/* try first endpoints/sharedInbox */
if ((v = xs_dict_get(data, "endpoints")))
v = xs_dict_get(v, "sharedInbox");
/* try then the regular inbox */
if (xs_is_null(v))
v = xs_dict_get(data, "inbox");
}
return xs_is_null(v) ? NULL : xs_dup(v);
}
int send_to_actor(snac *snac, char *actor, char *msg, d_char **payload, int *p_size)
/* sends a message to an actor */
{
int status = 400;
xs *inbox = get_actor_inbox(snac, actor);
if (!xs_is_null(inbox))
status = send_to_inbox(snac, inbox, msg, payload, p_size);
return status;
}
d_char *recipient_list(snac *snac, char *msg, int expand_public)
/* returns the list of recipients for a message */
{
char *to = xs_dict_get(msg, "to");
char *cc = xs_dict_get(msg, "cc");
xs_set rcpts;
int n;
xs_set_init(&rcpts);
char *lists[] = { to, cc, NULL };
for (n = 0; lists[n]; n++) {
char *l = lists[n];
char *v;
xs *tl = NULL;
/* if it's a string, create a list with only one element */
if (xs_type(l) == XSTYPE_STRING) {
tl = xs_list_new();
tl = xs_list_append(tl, l);
l = tl;
}
while (xs_list_iter(&l, &v)) {
if (expand_public && strcmp(v, public_address) == 0) {
/* iterate the followers and add them */
xs *fwers = follower_list(snac);
char *actor;
char *p = fwers;
while (xs_list_iter(&p, &actor))
xs_set_add(&rcpts, actor);
}
else
xs_set_add(&rcpts, v);
}
}
return xs_set_result(&rcpts);
}
d_char *inbox_list(snac *snac, char *msg)
/* returns the list of inboxes that are recipients of this message */
{
xs *rcpts = recipient_list(snac, msg, 1);
xs_set inboxes;
char *p, *v;
xs_set_init(&inboxes);
p = rcpts;
while (xs_list_iter(&p, &v)) {
xs *inbox;
if ((inbox = get_actor_inbox(snac, v)) != NULL) {
/* add the inbox if it's not already there */
xs_set_add(&inboxes, inbox);
}
}
return xs_set_result(&inboxes);
}
int is_msg_public(snac *snac, char *msg)
/* checks if a message is public */
{
int ret = 0;
xs *rcpts = recipient_list(snac, msg, 0);
char *p, *v;
p = rcpts;
while (!ret && xs_list_iter(&p, &v)) {
if (strcmp(v, public_address) == 0)
ret = 1;
}
return ret;
}
void process_tags(const char *content, d_char **n_content, d_char **tag)
/* parses mentions and tags from content */
{
d_char *nc = xs_str_new(NULL);
d_char *tl = xs_list_new();
xs *split;
char *p, *v;
int n = 0;
split = xs_regex_split(content, "(@[A-Za-z0-9_]+@[A-Za-z0-9\\.-]+|#[^ ,\\.:;]+)");
p = split;
while (xs_list_iter(&p, &v)) {
if ((n & 0x1)) {
if (*v == '@') {
/* query the webfinger about this fellow */
xs *actor = NULL;
xs *uid = NULL;
int status;
status = webfinger_request(v + 1, &actor, &uid);
if (valid_status(status)) {
xs *d = xs_dict_new();
xs *n = xs_fmt("@%s", uid);
xs *l = xs_fmt("<a href=\"%s\" class=\"u-url mention\">%s</a>", actor, n);
d = xs_dict_append(d, "type", "Mention");
d = xs_dict_append(d, "href", actor);
d = xs_dict_append(d, "name", n);
tl = xs_list_append(tl, d);
/* add the code */
nc = xs_str_cat(nc, l);
}
else
/* store as is */
nc = xs_str_cat(nc, v);
}
else
if (*v == '#') {
/* hashtag */
/* store as is by now */
nc = xs_str_cat(nc, v);
}
}
else
nc = xs_str_cat(nc, v);
n++;
}
*n_content = nc;
*tag = tl;
}
/** messages **/
d_char *msg_base(snac *snac, char *type, char *id, char *actor, char *date, char *object)
/* creates a base ActivityPub message */
{
xs *did = NULL;
xs *published = NULL;
/* generated values */
if (date && strcmp(date, "@now") == 0) {
published = xs_str_utctime(0, "%Y-%m-%dT%H:%M:%SZ");
date = published;
}
if (id != NULL) {
if (strcmp(id, "@dummy") == 0) {
xs *ntid = tid(0);
did = xs_fmt("%s/d/%s/%s", snac->actor, ntid, type);
id = did;
}
else
if (strcmp(id, "@object") == 0) {
if (object != NULL) {
did = xs_fmt("%s/%s", xs_dict_get(object, "id"), type);
id = did;
}
else
id = NULL;
}
}
d_char *msg = xs_dict_new();
msg = xs_dict_append(msg, "@context", "https:/" "/www.w3.org/ns/activitystreams");
msg = xs_dict_append(msg, "type", type);
if (id != NULL)
msg = xs_dict_append(msg, "id", id);
if (actor != NULL)
msg = xs_dict_append(msg, "actor", actor);
if (date != NULL)
msg = xs_dict_append(msg, "published", date);
if (object != NULL)
msg = xs_dict_append(msg, "object", object);
return msg;
}
d_char *msg_collection(snac *snac, char *id)
/* creates an empty OrderedCollection message */
{
d_char *msg = msg_base(snac, "OrderedCollection", id, NULL, NULL, NULL);
xs *ol = xs_list_new();
xs *nz = xs_number_new(0);
msg = xs_dict_append(msg, "attributedTo", snac->actor);
msg = xs_dict_append(msg, "orderedItems", ol);
msg = xs_dict_append(msg, "totalItems", nz);
return msg;
}
d_char *msg_accept(snac *snac, char *object, char *to)
/* creates an Accept message (as a response to a Follow) */
{
d_char *msg = msg_base(snac, "Accept", "@dummy", snac->actor, NULL, object);
msg = xs_dict_append(msg, "to", to);
return msg;
}
d_char *msg_update(snac *snac, char *object)
/* creates an Update message */
{
d_char *msg = msg_base(snac, "Update", "@object", snac->actor, "@now", object);
msg = xs_dict_append(msg, "to", public_address);
return msg;
}
d_char *msg_admiration(snac *snac, char *object, char *type)
/* creates a Like or Announce message */
{
xs *a_msg = NULL;
d_char *msg = NULL;
/* call the object */
timeline_request(snac, object, snac->actor);
if (valid_status(object_get(object, &a_msg, NULL))) {
xs *rcpts = xs_list_new();
msg = msg_base(snac, type, "@dummy", snac->actor, "@now", object);
rcpts = xs_list_append(rcpts, public_address);
rcpts = xs_list_append(rcpts, xs_dict_get(a_msg, "attributedTo"));
msg = xs_dict_append(msg, "to", rcpts);
}
else
snac_log(snac, xs_fmt("msg_admiration cannot retrieve object %s", object));
return msg;
}
d_char *msg_actor(snac *snac)
/* create a Person message for this actor */
{
xs *ctxt = xs_list_new();
xs *icon = xs_dict_new();
xs *keys = xs_dict_new();
xs *avtr = NULL;
xs *kid = NULL;
xs *f_bio = NULL;
d_char *msg = msg_base(snac, "Person", snac->actor, NULL, NULL, NULL);
char *p;
int n;
/* change the @context (is this really necessary?) */
ctxt = xs_list_append(ctxt, "https:/" "/www.w3.org/ns/activitystreams");
ctxt = xs_list_append(ctxt, "https:/" "/w3id.org/security/v1");
msg = xs_dict_set(msg, "@context", ctxt);
msg = xs_dict_set(msg, "url", snac->actor);
msg = xs_dict_set(msg, "name", xs_dict_get(snac->config, "name"));
msg = xs_dict_set(msg, "preferredUsername", snac->uid);
msg = xs_dict_set(msg, "published", xs_dict_get(snac->config, "published"));
f_bio = not_really_markdown(xs_dict_get(snac->config, "bio"));
msg = xs_dict_set(msg, "summary", f_bio);
char *folders[] = { "inbox", "outbox", "followers", "following", NULL };
for (n = 0; folders[n]; n++) {
xs *f = xs_fmt("%s/%s", snac->actor, folders[n]);
msg = xs_dict_set(msg, folders[n], f);
}
p = xs_dict_get(snac->config, "avatar");
if (*p == '\0')
avtr = xs_fmt("%s/susie.png", srv_baseurl);
else
avtr = xs_dup(p);
icon = xs_dict_append(icon, "type", "Image");
icon = xs_dict_append(icon, "mediaType", xs_mime_by_ext(avtr));
icon = xs_dict_append(icon, "url", avtr);
msg = xs_dict_set(msg, "icon", icon);
kid = xs_fmt("%s#main-key", snac->actor);
keys = xs_dict_append(keys, "id", kid);
keys = xs_dict_append(keys, "owner", snac->actor);
keys = xs_dict_append(keys, "publicKeyPem", xs_dict_get(snac->key, "public"));
msg = xs_dict_set(msg, "publicKey", keys);
return msg;
}
d_char *msg_create(snac *snac, char *object)
/* creates a 'Create' message */
{
d_char *msg = msg_base(snac, "Create", "@object", snac->actor, "@now", object);
msg = xs_dict_append(msg, "attributedTo", xs_dict_get(object, "attributedTo"));
msg = xs_dict_append(msg, "to", xs_dict_get(object, "to"));
msg = xs_dict_append(msg, "cc", xs_dict_get(object, "cc"));
return msg;
}
d_char *msg_undo(snac *snac, char *object)
/* creates an 'Undo' message */
{
d_char *msg = msg_base(snac, "Undo", "@object", snac->actor, "@now", object);
msg = xs_dict_append(msg, "to", xs_dict_get(object, "object"));
return msg;
}
d_char *msg_delete(snac *snac, char *id)
/* creates a 'Delete' + 'Tombstone' for a local entry */
{
xs *tomb = xs_dict_new();
d_char *msg = NULL;
/* sculpt the tombstone */
tomb = xs_dict_append(tomb, "type", "Tombstone");
tomb = xs_dict_append(tomb, "id", id);
/* now create the Delete */
msg = msg_base(snac, "Delete", "@object", snac->actor, "@now", tomb);
msg = xs_dict_append(msg, "to", public_address);
return msg;
}
d_char *msg_follow(snac *snac, char *url_or_uid)
/* creates a 'Follow' message */
{
xs *actor_o = NULL;
xs *actor = NULL;
d_char *msg = NULL;
int status;
if (xs_startswith(url_or_uid, "https:/"))
actor = xs_dup(url_or_uid);
else
if (!valid_status(webfinger_request(url_or_uid, &actor, NULL))) {
snac_log(snac, xs_fmt("cannot resolve user %s to follow", url_or_uid));
return NULL;
}
/* request the actor */
status = actor_request(snac, actor, &actor_o);
if (valid_status(status)) {
/* check if the actor is an alias */
char *r_actor = xs_dict_get(actor_o, "id");
if (r_actor && strcmp(actor, r_actor) != 0) {
snac_log(snac, xs_fmt("actor to follow is an alias %s -> %s", actor, r_actor));
}
msg = msg_base(snac, "Follow", "@dummy", snac->actor, NULL, r_actor);
}
else
snac_log(snac, xs_fmt("cannot get actor to follow %s %d", actor, status));
return msg;
}
d_char *msg_note(snac *snac, char *content, char *rcpts, char *in_reply_to, char *attach)
/* creates a 'Note' message */
{
xs *ntid = tid(0);
xs *id = xs_fmt("%s/p/%s", snac->actor, ntid);
xs *ctxt = NULL;
xs *fc2 = NULL;
xs *fc1 = NULL;
xs *to = NULL;
xs *cc = xs_list_new();
xs *irt = NULL;
xs *tag = NULL;
xs *atls = NULL;
d_char *msg = msg_base(snac, "Note", id, NULL, "@now", NULL);
char *p, *v;
if (rcpts == NULL)
to = xs_list_new();
else {
if (xs_type(rcpts) == XSTYPE_STRING) {
to = xs_list_new();
to = xs_list_append(to, rcpts);
}
else
to = xs_dup(rcpts);
}
/* format the content */
fc2 = not_really_markdown(content);
/* extract the tags */
process_tags(fc2, &fc1, &tag);
if (tag == NULL)
tag = xs_list_new();
if (in_reply_to != NULL) {
xs *p_msg = NULL;
/* demand this thing */
timeline_request(snac, in_reply_to, NULL);
if (valid_status(object_get(in_reply_to, &p_msg, NULL))) {
/* add this author as recipient */
char *a, *v;
if ((a = xs_dict_get(p_msg, "attributedTo")) && xs_list_in(to, a) == -1)
to = xs_list_append(to, a);
/* add this author to the tag list as a mention */
xs *t_href;
xs *t_name;
if (!xs_is_null(a) && valid_status(webfinger_request(a, &t_href, &t_name))) {
xs *t = xs_dict_new();
t = xs_dict_append(t, "type", "Mention");
t = xs_dict_append(t, "href", t_href);
t = xs_dict_append(t, "name", t_name);
tag = xs_list_append(tag, t);
}
/* get the context, if there is one */
if ((v = xs_dict_get(p_msg, "context")))
ctxt = xs_dup(v);
/* if this message is public, ours will also be */
if (is_msg_public(snac, p_msg) &&
xs_list_in(to, public_address) == -1)
to = xs_list_append(to, public_address);
}
irt = xs_dup(in_reply_to);
}
else
irt = xs_val_new(XSTYPE_NULL);
/* create the attachment list, if there are any */
if (!xs_is_null(attach) && *attach != '\0') {
xs *lsof1 = NULL;
if (xs_type(attach) == XSTYPE_STRING) {
lsof1 = xs_list_append(xs_list_new(), attach);
attach = lsof1;
}
atls = xs_list_new();
while (xs_list_iter(&attach, &v)) {
xs *d = xs_dict_new();
char *mime = xs_mime_by_ext(v);
d = xs_dict_append(d, "mediaType", mime);
d = xs_dict_append(d, "url", v);
d = xs_dict_append(d, "name", "");
d = xs_dict_append(d, "type",
xs_startswith(mime, "image/") ? "Image" : "Document");
atls = xs_list_append(atls, d);
}
}
if (ctxt == NULL)
ctxt = xs_fmt("%s#ctxt", id);
/* add all mentions to the cc */
p = tag;
while (xs_list_iter(&p, &v)) {
if (xs_type(v) == XSTYPE_DICT) {
char *t;
if ((t = xs_dict_get(v, "type")) != NULL && strcmp(t, "Mention") == 0) {
if ((t = xs_dict_get(v, "href")) != NULL)
cc = xs_list_append(cc, t);
}
}
}
/* no recipients? must be for everybody */
if (xs_list_len(to) == 0)
to = xs_list_append(to, public_address);
msg = xs_dict_append(msg, "attributedTo", snac->actor);
msg = xs_dict_append(msg, "summary", "");
msg = xs_dict_append(msg, "content", fc1);
msg = xs_dict_append(msg, "context", ctxt);
msg = xs_dict_append(msg, "url", id);
msg = xs_dict_append(msg, "to", to);
msg = xs_dict_append(msg, "cc", cc);
msg = xs_dict_append(msg, "inReplyTo", irt);
msg = xs_dict_append(msg, "tag", tag);
if (atls != NULL)
msg = xs_dict_append(msg, "attachment", atls);
return msg;
}
void notify(snac *snac, char *type, char *utype, char *actor, char *msg)
/* notifies the user of relevant events */
{
char *email = xs_dict_get(snac->config, "email");
char *object = NULL;
/* no email address? done */
if (xs_is_null(email) || *email == '\0')
return;
if (strcmp(type, "Create") == 0) {
/* only notify of notes specifically for us */
xs *rcpts = recipient_list(snac, msg, 0);
if (xs_list_in(rcpts, snac->actor) == -1)
return;
}
if (strcmp(type, "Undo") == 0 && strcmp(utype, "Follow") != 0)
return;
if (strcmp(type, "Like") == 0 || strcmp(type, "Announce") == 0) {
object = xs_dict_get(msg, "object");
if (xs_is_null(object))
return;
else {
if (xs_type(object) == XSTYPE_DICT)
object = xs_dict_get(object, "id");
/* if it's not an admiration about something by us, done */
if (xs_is_null(object) || !xs_startswith(object, snac->actor))
return;
}
}
snac_debug(snac, 1, xs_fmt("notify(%s, %s, %s)", type, utype, actor));
/* prepare message */
xs *subject = xs_fmt("snac notify for @%s@%s",
xs_dict_get(snac->config, "uid"), xs_dict_get(srv_config, "host"));
xs *from = xs_fmt("snac-daemon <snac-daemon@%s>", xs_dict_get(srv_config, "host"));
xs *header = xs_fmt(
"From: %s\n"
"To: %s\n"
"Subject: %s\n"
"\n",
from, email, subject);
xs *body = xs_str_new(header);
if (strcmp(utype, "(null)") != 0) {
xs *s1 = xs_fmt("Type : %s + %s\n", type, utype);
body = xs_str_cat(body, s1);
}
else {
xs *s1 = xs_fmt("Type : %s\n", type);
body = xs_str_cat(body, s1);
}
{
xs *s1 = xs_fmt("Actor : %s\n", actor);
body = xs_str_cat(body, s1);
}
if (object != NULL) {
xs *s1 = xs_fmt("Object: %s\n", object);
body = xs_str_cat(body, s1);
}
enqueue_email(snac, body, 0);
}
/** queues **/
int process_message(snac *snac, char *msg, char *req)
/* processes an ActivityPub message from the input queue */
{
/* actor and type exist, were checked previously */
char *actor = xs_dict_get(msg, "actor");
char *type = xs_dict_get(msg, "type");
xs *actor_o = NULL;
int a_status;
int do_notify = 0;
char *object, *utype;
object = xs_dict_get(msg, "object");
if (object != NULL && xs_type(object) == XSTYPE_DICT)
utype = xs_dict_get(object, "type");
else
utype = "(null)";
/* bring the actor */
a_status = actor_request(snac, actor, &actor_o);
/* if the actor does not explicitly exist, discard */
if (a_status == 404 || a_status == 410) {
snac_debug(snac, 1,
xs_fmt("dropping message due to actor error %s %d", actor, a_status));
return 1;
}
if (!valid_status(a_status)) {
/* other actor download errors may need a retry */
snac_debug(snac, 1,
xs_fmt("error requesting actor %s %d -- retry later", actor, a_status));
return 0;
}
/* check the signature */
if (!check_signature(snac, req)) {
snac_log(snac, xs_fmt("bad signature"));
return 1;
}
if (strcmp(type, "Follow") == 0) {
xs *f_msg = xs_dup(msg);
xs *reply = msg_accept(snac, f_msg, actor);
post(snac, reply);
if (xs_is_null(xs_dict_get(f_msg, "published"))) {
/* add a date if it doesn't include one (Mastodon) */
xs *date = xs_str_utctime(0, "%Y-%m-%dT%H:%M:%SZ");
f_msg = xs_dict_set(f_msg, "published", date);
}
timeline_add(snac, xs_dict_get(f_msg, "id"), f_msg, NULL, NULL);
follower_add(snac, actor);
snac_log(snac, xs_fmt("new follower %s", actor));
do_notify = 1;
}
else
if (strcmp(type, "Undo") == 0) {
if (strcmp(utype, "Follow") == 0) {
if (valid_status(follower_del(snac, actor))) {
snac_log(snac, xs_fmt("no longer following us %s", actor));
do_notify = 1;
}
else
snac_log(snac, xs_fmt("error deleting follower %s", actor));
}
else
snac_debug(snac, 1, xs_fmt("ignored 'Undo' for object type '%s'", utype));
}
else
if (strcmp(type, "Create") == 0) {
if (strcmp(utype, "Note") == 0) {
if (is_muted(snac, actor))
snac_log(snac, xs_fmt("ignored 'Note' from muted actor %s", actor));
else {
char *id = xs_dict_get(object, "id");
char *in_reply_to = xs_dict_get(object, "inReplyTo");
timeline_request(snac, in_reply_to, NULL);
if (timeline_add(snac, id, object, in_reply_to, NULL)) {
snac_log(snac, xs_fmt("new 'Note' %s %s", actor, id));
do_notify = 1;
}
}
}
else
snac_debug(snac, 1, xs_fmt("ignored 'Create' for object type '%s'", utype));
}
else
if (strcmp(type, "Accept") == 0) {
if (strcmp(utype, "Follow") == 0) {
if (following_check(snac, actor)) {
following_add(snac, actor, msg);
snac_log(snac, xs_fmt("confirmed follow from %s", actor));
}
else
snac_log(snac, xs_fmt("spurious follow accept from %s", actor));
}
else
snac_debug(snac, 1, xs_fmt("ignored 'Accept' for object type '%s'", utype));
}
else
if (strcmp(type, "Like") == 0) {
if (xs_type(object) == XSTYPE_DICT)
object = xs_dict_get(object, "id");
timeline_admire(snac, msg, object, actor, 1);
snac_log(snac, xs_fmt("new 'Like' %s %s", actor, object));
do_notify = 1;
}
else
if (strcmp(type, "Announce") == 0) {
xs *a_msg = NULL;
if (xs_type(object) == XSTYPE_DICT)
object = xs_dict_get(object, "id");
timeline_request(snac, object, actor);
if (valid_status(object_get(object, &a_msg, NULL))) {
char *who = xs_dict_get(a_msg, "attributedTo");
if (who && !is_muted(snac, who)) {
/* bring the actor */
xs *who_o = NULL;
if (valid_status(actor_request(snac, who, &who_o))) {
timeline_admire(snac, msg, object, actor, 0);
snac_log(snac, xs_fmt("new 'Announce' %s %s", actor, object));
do_notify = 1;
}
else
snac_log(snac, xs_fmt("dropped 'Announce' on actor request error %s", who));
}
else
snac_log(snac, xs_fmt("ignored 'Announce' about muted actor %s", who));
}
else
snac_log(snac, xs_fmt("error requesting 'Announce' object %s", object));
}
else
if (strcmp(type, "Update") == 0) {
if (strcmp(utype, "Person") == 0) {
actor_add(snac, actor, xs_dict_get(msg, "object"));
snac_log(snac, xs_fmt("updated actor %s", actor));
}
else
snac_log(snac, xs_fmt("ignored 'Update' for object type '%s'", utype));
}
else
if (strcmp(type, "Delete") == 0) {
if (xs_type(object) == XSTYPE_DICT)
object = xs_dict_get(object, "id");
if (valid_status(timeline_del(snac, object)))
snac_debug(snac, 1, xs_fmt("new 'Delete' %s %s", actor, object));
else
snac_debug(snac, 1, xs_fmt("ignored 'Delete' for unknown object %s", object));
}
else
snac_debug(snac, 1, xs_fmt("process_message type '%s' ignored", type));
if (do_notify)
notify(snac, type, utype, actor, msg);
return 1;
}
void process_queue(snac *snac)
/* processes the queue */
{
xs *list;
char *p, *fn;
int queue_retry_max = xs_number_get(xs_dict_get(srv_config, "queue_retry_max"));
list = queue(snac);
p = list;
while (xs_list_iter(&p, &fn)) {
xs *q_item = dequeue(snac, fn);
char *type;
if (q_item == NULL) {
snac_log(snac, xs_fmt("process_queue q_item error"));
continue;
}
if ((type = xs_dict_get(q_item, "type")) == NULL)
type = "output";
if (strcmp(type, "output") == 0) {
int status;
char *inbox = xs_dict_get(q_item, "inbox");
char *msg = xs_dict_get(q_item, "object");
int retries = xs_number_get(xs_dict_get(q_item, "retries"));
xs *payload = NULL;
int p_size = 0;
if (xs_is_null(inbox) || xs_is_null(msg))
continue;
/* deliver */
status = send_to_inbox(snac, inbox, msg, &payload, &p_size);
snac_log(snac, xs_fmt("process_queue sent to inbox %s %d", inbox, status));
if (!valid_status(status)) {
/* error sending; requeue? */
if (status == 404 || status == 410)
/* explicit error: discard */