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/* snac - A simple, minimalistic ActivityPub instance */
/* copyright (c) 2022 grunfink - MIT license */
#include "xs.h"
#include "xs_io.h"
#include "xs_json.h"
#include "xs_openssl.h"
#include "snac.h"
#include <glob.h>
int srv_open(char *basedir)
/* opens a server */
{
int ret = 0;
xs *cfg_file = NULL;
FILE *f;
d_char *error = NULL;
srv_basedir = xs_str_new(basedir);
if (xs_endswith(srv_basedir, "/"))
srv_basedir = xs_crop(srv_basedir, 0, -1);
cfg_file = xs_fmt("%s/server.json", basedir);
if ((f = fopen(cfg_file, "r")) == NULL)
error = xs_fmt("error opening '%s'", cfg_file);
else {
xs *cfg_data;
/* read full config file */
cfg_data = xs_readall(f);
/* parse */
srv_config = xs_json_loads(cfg_data);
if (srv_config == NULL)
error = xs_fmt("cannot parse '%s'", cfg_file);
else {
char *host;
char *prefix;
char *dbglvl;
host = xs_dict_get(srv_config, "host");
prefix = xs_dict_get(srv_config, "prefix");
dbglvl = xs_dict_get(srv_config, "dbglevel");
if (host == NULL || prefix == NULL)
error = xs_str_new("cannot get server data");
else {
srv_baseurl = xs_fmt("https://%s%s", host, prefix);
dbglevel = (int) xs_number_get(dbglvl);
if ((dbglvl = getenv("DEBUG")) != NULL) {
dbglevel = atoi(dbglvl);
error = xs_fmt("DEBUG level set to %d from environment", dbglevel);
}
ret = 1;
}
}
}
if (ret == 0 && error != NULL)
srv_log(error);
return ret;
}
void user_free(snac *snac)
/* frees a user snac */
{
free(snac->uid);
free(snac->basedir);
free(snac->config);
free(snac->key);
free(snac->actor);
}
int user_open(snac *snac, char *uid)
/* opens a user */
{
int ret = 0;
memset(snac, '\0', sizeof(struct _snac));
if (validate_uid(uid)) {
xs *cfg_file;
FILE *f;
snac->uid = xs_str_new(uid);
snac->basedir = xs_fmt("%s/user/%s", srv_basedir, uid);
cfg_file = xs_fmt("%s/user.json", snac->basedir);
if ((f = fopen(cfg_file, "r")) != NULL) {
xs *cfg_data;
/* read full config file */
cfg_data = xs_readall(f);
fclose(f);
if ((snac->config = xs_json_loads(cfg_data)) != NULL) {
xs *key_file = xs_fmt("%s/key.json", snac->basedir);
if ((f = fopen(key_file, "r")) != NULL) {
xs *key_data;
key_data = xs_readall(f);
fclose(f);
if ((snac->key = xs_json_loads(key_data)) != NULL) {
snac->actor = xs_fmt("%s/%s", srv_baseurl, uid);
ret = 1;
}
else
srv_log(xs_fmt("cannot parse '%s'", key_file));
}
else
srv_log(xs_fmt("error opening '%s'", key_file));
}
else
srv_log(xs_fmt("cannot parse '%s'", cfg_file));
}
else
srv_log(xs_fmt("error opening '%s'", cfg_file));
}
else
srv_log(xs_fmt("invalid user '%s'", uid));
if (!ret)
user_free(snac);
return ret;
}
d_char *user_list(void)
/* returns the list of user ids */
{
d_char *list;
xs *spec;
glob_t globbuf;
globbuf.gl_offs = 1;
list = xs_list_new();
spec = xs_fmt("%s/user/" "*", srv_basedir);
if (glob(spec, 0, NULL, &globbuf) == 0) {
int n;
char *p;
for (n = 0; (p = globbuf.gl_pathv[n]) != NULL; n++) {
if ((p = strrchr(p, '/')) != NULL)
list = xs_list_append(list, p + 1);
}
}
globfree(&globbuf);
return list;
}
float mtime(char *fn)
/* returns the mtime of a file or directory, or 0.0 */
{
struct stat st;
float r = 0.0;
if (stat(fn, &st) != -1)
r = (float)st.st_mtim.tv_sec;
return r;
}
d_char *_follower_fn(snac *snac, char *actor)
{
xs *md5 = xs_md5_hex(actor, strlen(actor));
return xs_fmt("%s/followers/%s.json", snac->basedir, md5);
}
int follower_add(snac *snac, char *actor, char *msg)
/* adds a follower */
{
int ret = 201; /* created */
xs *fn = _follower_fn(snac, actor);
FILE *f;
if ((f = fopen(fn, "w")) != NULL) {
xs *j = xs_json_dumps_pp(msg, 4);
fwrite(j, 1, strlen(j), f);
fclose(f);
}
else
ret = 500;
snac_debug(snac, 2, xs_fmt("follower_add %s %s", actor, fn));
return ret;
}
int follower_del(snac *snac, char *actor)
/* deletes a follower */
{
xs *fn = _follower_fn(snac, actor);
unlink(fn);
snac_debug(snac, 2, xs_fmt("follower_del %s %s", actor, fn));
return 200;
}
int follower_check(snac *snac, char *actor)
/* checks if someone is a follower */
{
xs *fn = _follower_fn(snac, actor);
return !!(mtime(fn) != 0.0);
}
d_char *follower_list(snac *snac)
/* returns the list of followers */
{
d_char *list;
xs *spec;
glob_t globbuf;
list = xs_list_new();
spec = xs_fmt("%s/followers/" "*.json", snac->basedir);
if (glob(spec, 0, NULL, &globbuf) == 0) {
int n;
char *p;
for (n = 0; (p = globbuf.gl_pathv[n]) != NULL; n++) {
FILE *f;
if ((f = fopen(p, "r")) != NULL) {
}
}
}
globfree(&globbuf);
return list;
}
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