mirror of
https://codeberg.org/grunfink/snac2.git
synced 2024-11-14 17:45:04 +00:00
150 lines
2.8 KiB
C
150 lines
2.8 KiB
C
/* snac - A simple, minimalistic ActivityPub instance */
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/* copyright (c) 2022 - 2023 grunfink / MIT license */
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#define XS_IMPLEMENTATION
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#include "xs.h"
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#include "xs_io.h"
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#include "xs_encdec.h"
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#include "xs_json.h"
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#include "xs_curl.h"
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#include "xs_openssl.h"
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#include "xs_socket.h"
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#include "xs_httpd.h"
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#include "xs_mime.h"
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#include "xs_regex.h"
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#include "xs_set.h"
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#include "xs_time.h"
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#include "xs_glob.h"
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#include "snac.h"
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#include <sys/time.h>
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#include <sys/stat.h>
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d_char *srv_basedir = NULL;
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d_char *srv_config = NULL;
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d_char *srv_baseurl = NULL;
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int srv_running = 0;
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int dbglevel = 0;
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int mkdirx(const char *pathname)
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/* creates a directory with special permissions */
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{
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int ret;
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if ((ret = mkdir(pathname, DIR_PERM)) != -1)
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ret = chmod(pathname, DIR_PERM);
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return ret;
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}
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int valid_status(int status)
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/* is this HTTP status valid? */
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{
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return status >= 200 && status <= 299;
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}
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d_char *tid(int offset)
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/* returns a time-based Id */
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return xs_fmt("%10d.%06d", tv.tv_sec + offset, tv.tv_usec);
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}
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double ftime(void)
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/* returns the UNIX time as a float */
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{
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xs *ntid = tid(0);
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return atof(ntid);
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}
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int validate_uid(const char *uid)
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/* returns if uid is a valid identifier */
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{
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while (*uid) {
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if (!(isalnum(*uid) || *uid == '_'))
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return 0;
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uid++;
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}
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return 1;
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}
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void srv_debug(int level, d_char *str)
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/* logs a debug message */
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{
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if (xs_str_in(str, srv_basedir) != -1) {
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/* replace basedir with ~ */
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str = xs_replace_i(str, srv_basedir, "~");
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}
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if (dbglevel >= level) {
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xs *tm = xs_str_localtime(0, "%H:%M:%S");
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fprintf(stderr, "%s %s\n", tm, str);
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}
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xs_free(str);
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}
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void snac_debug(snac *snac, int level, d_char *str)
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/* prints a user debugging information */
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{
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xs *o_str = str;
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d_char *msg = xs_fmt("[%s] %s", snac->uid, o_str);
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if (xs_str_in(msg, snac->basedir) != -1) {
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/* replace long basedir references with ~ */
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msg = xs_replace_i(msg, snac->basedir, "~");
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}
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srv_debug(level, msg);
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}
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d_char *hash_password(const char *uid, const char *passwd, const char *nonce)
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/* hashes a password */
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{
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xs *d_nonce = NULL;
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xs *combi;
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xs *hash;
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if (nonce == NULL) {
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d_nonce = xs_fmt("%08x", arc4random());
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nonce = d_nonce;
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}
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combi = xs_fmt("%s:%s:%s", nonce, uid, passwd);
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hash = xs_sha1_hex(combi, strlen(combi));
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return xs_fmt("%s:%s", nonce, hash);
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}
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int check_password(const char *uid, const char *passwd, const char *hash)
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/* checks a password */
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{
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int ret = 0;
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xs *spl = xs_split_n(hash, ":", 1);
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if (xs_list_len(spl) == 2) {
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xs *n_hash = hash_password(uid, passwd, xs_list_get(spl, 0));
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ret = (strcmp(hash, n_hash) == 0);
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}
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return ret;
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}
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