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/* snac - A simple, minimalistic ActivityPub instance */
/* copyright (c) 2022 grunfink - MIT license */
#define XS_IMPLEMENTATION
#include "xs.h"
#include "xs_io.h"
#include "xs_encdec.h"
#include "xs_json.h"
#include "xs_curl.h"
#include "xs_openssl.h"
#include "xs_socket.h"
#include "xs_httpd.h"
#include "snac.h"
#include <sys/time.h>
d_char *srv_basedir = NULL;
d_char *srv_config = NULL;
d_char *srv_baseurl = NULL;
int dbglevel = 0;
d_char *xs_time(char *fmt, int local)
/* returns a d_char with a formated time */
{
time_t t = time(NULL);
struct tm tm;
char tmp[64];
if (local)
localtime_r(&t, &tm);
else
gmtime_r(&t, &tm);
strftime(tmp, sizeof(tmp), fmt, &tm);
return xs_str_new(tmp);
}
d_char *tid(void)
/* returns a time-based Id */
{
struct timeval tv;
struct timezone tz;
gettimeofday(&tv, &tz);
return xs_fmt("%10d.%06d", tv.tv_sec, tv.tv_usec);
}
void srv_debug(int level, d_char *str)
/* logs a debug message */
{
xs *msg = str;
if (dbglevel >= level) {
xs *tm = xs_local_time("%H:%M:%S");
fprintf(stderr, "%s %s\n", tm, msg);
}
}
int srv_open(char *basedir)
/* opens a server */
{
int ret = 0;
xs *cfg_file = NULL;
FILE *f;
srv_basedir = xs_str_new(basedir);
cfg_file = xs_fmt("%s/server.json", basedir);
if ((f = fopen(cfg_file, "r")) == NULL)
srv_log(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)
srv_log(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)
srv_log(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);
srv_log(xs_fmt("DEBUG level set to %d from environment", dbglevel));
}
ret = 1;
}
}
}
return ret;
}
int validate_uid(char *uid)
/* returns if uid is a valid identifier */
{
while (*uid) {
if (!(isalnum(*uid) || *uid == '_'))
return 0;
uid++;
}
return 1;
}
void snac_free(snac *snac)
/* frees a user snac */
{
free(snac->uid);
free(snac->basedir);
free(snac->config);
free(snac->key);
free(snac->actor);
}
int snac_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)
snac_free(snac);
return ret;
}
void snac_debug(snac *snac, int level, d_char *str)
/* prints a user debugging information */
{
xs *msg = str;
if (dbglevel >= level) {
xs *tm = xs_local_time("%H:%M:%S");
fprintf(stderr, "%s [%s] %s\n", tm, snac->uid, msg);
}
}
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