snac2/main.c

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/* snac - A simple, minimalistic ActivityPub instance */
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/* copyright (c) 2022 - 2023 grunfink et al. / MIT license */
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#include "xs.h"
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#include "xs_io.h"
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#include "xs_json.h"
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#include "snac.h"
#include <sys/stat.h>
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int usage(void)
{
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printf("snac " VERSION " - A simple, minimalistic ActivityPub instance\n");
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printf("Copyright (c) 2022 - 2023 grunfink et al. / MIT license\n");
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printf("\n");
printf("Commands:\n");
printf("\n");
printf("init [{basedir}] Initializes the data storage\n");
printf("upgrade {basedir} Upgrade to a new version\n");
printf("adduser {basedir} [{uid}] Adds a new user\n");
printf("deluser {basedir} {uid} Deletes a user\n");
printf("httpd {basedir} Starts the HTTPD daemon\n");
printf("purge {basedir} Purges old data\n");
printf("webfinger {basedir} {actor} Queries about an actor (@user@host or actor url)\n");
printf("queue {basedir} {uid} Processes a user queue\n");
printf("follow {basedir} {uid} {actor} Follows an actor\n");
printf("unfollow {basedir} {uid} {actor} Unfollows an actor\n");
printf("request {basedir} {uid} {url} Requests an object\n");
printf("actor {basedir} {uid} {url} Requests an actor\n");
printf("note {basedir} {uid} {'text'} Sends a note to followers\n");
printf("resetpwd {basedir} {uid} Resets the password of a user\n");
printf("ping {basedir} {uid} {actor} Pings an actor\n");
printf("webfinger_s {basedir} {uid} {actor} Queries about an actor (@user@host or actor url)\n");
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printf("pin {basedir} {uid} {msg_url} Pins a message\n");
printf("unpin {basedir} {uid} {msg_url} Unpins a message\n");
printf("block {basedir} {instance_url} Blocks a full instance\n");
printf("unblock {basedir} {instance_url} Unblocks a full instance\n");
printf("limit {basedir} {uid} {actor} Limits an actor (drops their announces)\n");
printf("unlimit {basedir} {uid} {actor} Unlimits an actor\n");
/* printf("question {basedir} {uid} 'opts' Generates a poll (;-separated opts)\n");*/
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return 1;
}
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char *get_argv(int *argi, int argc, char *argv[])
{
if (*argi < argc)
return argv[(*argi)++];
else
return NULL;
}
#define GET_ARGV() get_argv(&argi, argc, argv)
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int main(int argc, char *argv[])
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{
char *cmd;
char *basedir;
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char *user;
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char *url;
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int argi = 1;
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snac snac;
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/* ensure group has write access */
umask(0007);
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if ((cmd = GET_ARGV()) == NULL)
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return usage();
if (strcmp(cmd, "init") == 0) { /** **/
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/* initialize the data storage */
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/* ... */
basedir = GET_ARGV();
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return snac_init(basedir);
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}
if (strcmp(cmd, "upgrade") == 0) { /** **/
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int ret;
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/* upgrade */
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if ((basedir = GET_ARGV()) == NULL)
return usage();
if ((ret = srv_open(basedir, 1)) == 1)
srv_log(xs_dup("OK"));
return ret;
}
if (strcmp(cmd, "markdown") == 0) { /** **/
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/* undocumented, for testing only */
xs *c = xs_readall(stdin);
xs *fc = not_really_markdown(c, NULL);
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printf("<html>\n%s\n</html>\n", fc);
return 0;
}
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if ((basedir = GET_ARGV()) == NULL)
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return usage();
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if (!srv_open(basedir, 0)) {
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srv_log(xs_fmt("error opening data storage at %s", basedir));
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return 1;
}
if (strcmp(cmd, "adduser") == 0) { /** **/
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user = GET_ARGV();
return adduser(user);
return 0;
}
if (strcmp(cmd, "httpd") == 0) { /** **/
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httpd();
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srv_free();
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return 0;
}
if (strcmp(cmd, "purge") == 0) { /** **/
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purge_all();
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return 0;
}
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if ((user = GET_ARGV()) == NULL)
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return usage();
if (strcmp(cmd, "block") == 0) { /** **/
int ret = instance_block(user);
if (ret < 0) {
fprintf(stderr, "Error blocking instance %s: %d\n", user, ret);
return 1;
}
return 0;
}
if (strcmp(cmd, "unblock") == 0) { /** **/
int ret = instance_unblock(user);
if (ret < 0) {
fprintf(stderr, "Error unblocking instance %s: %d\n", user, ret);
return 1;
}
return 0;
}
if (strcmp(cmd, "webfinger") == 0) { /** **/
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xs *actor = NULL;
xs *uid = NULL;
int status;
status = webfinger_request(user, &actor, &uid);
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printf("status: %d\n", status);
if (actor != NULL)
printf("actor: %s\n", actor);
if (uid != NULL)
printf("uid: %s\n", uid);
return 0;
}
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if (!user_open(&snac, user)) {
printf("invalid user '%s'\n", user);
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return 1;
}
lastlog_write(&snac, "cmdline");
if (strcmp(cmd, "resetpwd") == 0) { /** **/
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return resetpwd(&snac);
}
if (strcmp(cmd, "deluser") == 0) { /** **/
return deluser(&snac);
}
if (strcmp(cmd, "queue") == 0) { /** **/
process_user_queue(&snac);
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return 0;
}
if (strcmp(cmd, "timeline") == 0) { /** **/
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#if 0
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xs *list = local_list(&snac, XS_ALL);
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xs *body = html_timeline(&snac, list, 1);
printf("%s\n", body);
user_free(&snac);
srv_free();
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#endif
xs *idx = xs_fmt("%s/private.idx", snac.basedir);
xs *list = index_list_desc(idx, 0, 256);
xs *tl = timeline_top_level(&snac, list);
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xs_json_dump(tl, 4, stdout);
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return 0;
}
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if ((url = GET_ARGV()) == NULL)
return usage();
if (strcmp(cmd, "webfinger_s") == 0) { /** **/
xs *actor = NULL;
xs *uid = NULL;
int status;
status = webfinger_request_signed(&snac, url, &actor, &uid);
printf("status: %d\n", status);
if (actor != NULL)
printf("actor: %s\n", actor);
if (uid != NULL)
printf("uid: %s\n", uid);
return 0;
}
if (strcmp(cmd, "announce") == 0) { /** **/
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xs *msg = msg_admiration(&snac, url, "Announce");
if (msg != NULL) {
enqueue_message(&snac, msg);
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if (dbglevel) {
xs_json_dump(msg, 4, stdout);
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}
}
return 0;
}
if (strcmp(cmd, "follow") == 0) { /** **/
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xs *msg = msg_follow(&snac, url);
if (msg != NULL) {
char *actor = xs_dict_get(msg, "object");
following_add(&snac, actor, msg);
enqueue_output_by_actor(&snac, msg, actor, 0);
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if (dbglevel) {
xs_json_dump(msg, 4, stdout);
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}
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}
return 0;
}
if (strcmp(cmd, "unfollow") == 0) { /** **/
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xs *object = NULL;
if (valid_status(following_get(&snac, url, &object))) {
xs *msg = msg_undo(&snac, xs_dict_get(object, "object"));
following_del(&snac, url);
enqueue_output_by_actor(&snac, msg, url, 0);
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snac_log(&snac, xs_fmt("unfollowed actor %s", url));
}
else
snac_log(&snac, xs_fmt("actor is not being followed %s", url));
return 0;
}
if (strcmp(cmd, "limit") == 0) { /** **/
int ret;
if (!following_check(&snac, url))
snac_log(&snac, xs_fmt("actor %s is not being followed", url));
else
if ((ret = limit(&snac, url)) == 0)
snac_log(&snac, xs_fmt("actor %s is now limited", url));
else
snac_log(&snac, xs_fmt("error limiting actor %s (%d)", url, ret));
return 0;
}
if (strcmp(cmd, "unlimit") == 0) { /** **/
int ret;
if (!following_check(&snac, url))
snac_log(&snac, xs_fmt("actor %s is not being followed", url));
else
if ((ret = unlimit(&snac, url)) == 0)
snac_log(&snac, xs_fmt("actor %s is no longer limited", url));
else
snac_log(&snac, xs_fmt("error unlimiting actor %s (%d)", url, ret));
return 0;
}
if (strcmp(cmd, "ping") == 0) { /** **/
xs *actor_o = NULL;
if (valid_status(actor_request(&snac, url, &actor_o))) {
xs *msg = msg_ping(&snac, url);
enqueue_output_by_actor(&snac, msg, url, 0);
if (dbglevel) {
xs_json_dump(msg, 4, stdout);
}
}
else {
srv_log(xs_fmt("Error getting actor %s", url));
return 1;
}
return 0;
}
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if (strcmp(cmd, "pin") == 0) { /** **/
int ret = pin(&snac, url);
if (ret < 0) {
fprintf(stderr, "error pinning %s %d\n", url, ret);
return 1;
}
return 0;
}
if (strcmp(cmd, "unpin") == 0) { /** **/
int ret = unpin(&snac, url);
if (ret < 0) {
fprintf(stderr, "error unpinning %s %d\n", url, ret);
return 1;
}
return 0;
}
if (strcmp(cmd, "question") == 0) { /** **/
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int end_secs = 5 * 60;
xs *opts = xs_split(url, ";");
xs *msg = msg_question(&snac, "Poll", NULL, opts, 0, end_secs);
xs *c_msg = msg_create(&snac, msg);
if (dbglevel) {
xs_json_dump(c_msg, 4, stdout);
}
enqueue_message(&snac, c_msg);
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enqueue_close_question(&snac, xs_dict_get(msg, "id"), end_secs);
timeline_add(&snac, xs_dict_get(msg, "id"), msg);
return 0;
}
if (strcmp(cmd, "request") == 0) { /** **/
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int status;
xs *data = NULL;
status = activitypub_request(&snac, url, &data);
printf("status: %d\n", status);
if (data != NULL) {
xs_json_dump(data, 4, stdout);
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}
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return 0;
}
if (strcmp(cmd, "actor") == 0) { /** **/
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int status;
xs *data = NULL;
status = actor_request(&snac, url, &data);
printf("status: %d\n", status);
if (valid_status(status)) {
xs_json_dump(data, 4, stdout);
}
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return 0;
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}
if (strcmp(cmd, "note") == 0) { /** **/
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xs *content = NULL;
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xs *msg = NULL;
xs *c_msg = NULL;
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char *in_reply_to = GET_ARGV();
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if (strcmp(url, "-e") == 0) {
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/* get the content from an editor */
FILE *f;
unlink("/tmp/snac-edit.txt");
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system("$EDITOR /tmp/snac-edit.txt");
if ((f = fopen("/tmp/snac-edit.txt", "r")) != NULL) {
content = xs_readall(f);
fclose(f);
unlink("/tmp/snac-edit.txt");
}
else {
printf("Nothing to send\n");
return 1;
}
}
else
if (strcmp(url, "-") == 0) {
/* get the content from stdin */
content = xs_readall(stdin);
}
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else
content = xs_dup(url);
msg = msg_note(&snac, content, NULL, in_reply_to, NULL, 0);
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c_msg = msg_create(&snac, msg);
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if (dbglevel) {
xs_json_dump(c_msg, 4, stdout);
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}
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enqueue_message(&snac, c_msg);
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timeline_add(&snac, xs_dict_get(msg, "id"), msg);
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return 0;
}
fprintf(stderr, "ERROR: bad command '%s'\n", cmd);
return 1;
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}