mirror of
https://codeberg.org/grunfink/snac2.git
synced 2024-11-22 13:25:04 +00:00
334 lines
9.7 KiB
C
334 lines
9.7 KiB
C
/* 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 "xs_time.h"
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#include "xs_openssl.h"
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#include "xs_random.h"
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#include "snac.h"
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#include <sys/stat.h>
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#include <stdlib.h>
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const char *default_srv_config = "{"
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"\"host\": \"\","
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"\"prefix\": \"\","
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"\"address\": \"127.0.0.1\","
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"\"port\": 8001,"
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"\"layout\": 0.0,"
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"\"dbglevel\": 0,"
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"\"queue_retry_minutes\": 2,"
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"\"queue_retry_max\": 10,"
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"\"cssurls\": [\"\"],"
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"\"max_timeline_entries\": 128,"
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"\"timeline_purge_days\": 120,"
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"\"local_purge_days\": 0,"
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"\"admin_email\": \"\","
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"\"admin_account\": \"\""
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"}";
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const char *default_css =
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"body { max-width: 48em; margin: auto; line-height: 1.5; padding: 0.8em; word-wrap: break-word; }\n"
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"pre { overflow-x: scroll; }\n"
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".snac-embedded-video, img { max-width: 100% }\n"
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".snac-origin { font-size: 85% }\n"
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".snac-score { float: right; font-size: 85% }\n"
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".snac-top-user { text-align: center; padding-bottom: 2em }\n"
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".snac-top-user-name { font-size: 200% }\n"
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".snac-top-user-id { font-size: 150% }\n"
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".snac-avatar { float: left; height: 2.5em; padding: 0.25em }\n"
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".snac-author { font-size: 90%; text-decoration: none }\n"
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".snac-author-tag { font-size: 80% }\n"
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".snac-pubdate { color: #a0a0a0; font-size: 90% }\n"
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".snac-top-controls { padding-bottom: 1.5em }\n"
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".snac-post { border-top: 1px solid #a0a0a0; }\n"
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".snac-children { padding-left: 2em; border-left: 1px solid #a0a0a0; }\n"
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".snac-textarea { font-family: inherit; width: 100% }\n"
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".snac-history { border: 1px solid #606060; border-radius: 3px; margin: 2.5em 0; padding: 0 2em }\n"
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".snac-btn-mute { float: right; margin-left: 0.5em }\n"
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".snac-btn-unmute { float: right; margin-left: 0.5em }\n"
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".snac-btn-follow { float: right; margin-left: 0.5em }\n"
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".snac-btn-unfollow { float: right; margin-left: 0.5em }\n"
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".snac-btn-hide { float: right; margin-left: 0.5em }\n"
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".snac-btn-delete { float: right; margin-left: 0.5em }\n"
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".snac-footer { margin-top: 2em; font-size: 75% }\n"
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".snac-poll-result { margin-left: auto; margin-right: auto; }\n"
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;
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const char *greeting_html =
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"<!DOCTYPE html>\n"
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"<html><head>\n"
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"<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\"/>\n"
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"<title>Welcome to %host%</title>\n"
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"<body style=\"margin: auto; max-width: 50em\">\n"
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"<h1>Welcome to %host%</h1>\n"
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"<p>This is a <a href=\"https://en.wikipedia.org/wiki/Fediverse\">Fediverse</a> instance\n"
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"that uses the <a href=\"https://en.wikipedia.org/wiki/ActivityPub\">ActivityPub</a> protocol.\n"
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"In other words, users at this host can communicate with people that use software like\n"
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"Mastodon, Pleroma, Friendica, etc. all around the world.</p>\n"
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"\n"
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"<p>There is no automatic sign up process for this server. If you want to be a part of\n"
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"this community, please write an email to %admin_email%\n"
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"and ask politely indicating what is your preferred user id (alphanumeric characters\n"
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"only).</p>\n"
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"\n"
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"<p>The following users are already part of this community:</p>\n"
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"\n"
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"%userlist%\n"
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"\n"
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"<p>This site is powered by <abbr title=\"Social Networks Are Crap\">snac</abbr>.</p>\n"
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"</body></html>\n";
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int snac_init(const char *basedir)
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{
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FILE *f;
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if (basedir == NULL) {
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printf("Base directory: "); fflush(stdout);
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srv_basedir = xs_strip_i(xs_readline(stdin));
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}
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else
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srv_basedir = xs_str_new(basedir);
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if (srv_basedir == NULL || *srv_basedir == '\0')
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return 1;
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if (xs_endswith(srv_basedir, "/"))
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srv_basedir = xs_crop_i(srv_basedir, 0, -1);
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if (mtime(srv_basedir) != 0.0) {
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printf("ERROR: directory '%s' must not exist.\n", srv_basedir);
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return 1;
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}
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srv_config = xs_json_loads(default_srv_config);
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xs *layout = xs_number_new(disk_layout);
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srv_config = xs_dict_set(srv_config, "layout", layout);
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printf("Network address [%s]: ", xs_dict_get(srv_config, "address")); fflush(stdout);
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{
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xs *i = xs_strip_i(xs_readline(stdin));
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if (*i)
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srv_config = xs_dict_set(srv_config, "address", i);
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}
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printf("Network port [%d]: ", (int)xs_number_get(xs_dict_get(srv_config, "port"))); fflush(stdout);
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{
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xs *i = xs_strip_i(xs_readline(stdin));
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if (*i) {
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xs *n = xs_number_new(atoi(i));
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srv_config = xs_dict_set(srv_config, "port", n);
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}
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}
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printf("Host name: "); fflush(stdout);
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{
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xs *i = xs_strip_i(xs_readline(stdin));
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if (*i == '\0')
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return 1;
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srv_config = xs_dict_set(srv_config, "host", i);
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}
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printf("URL prefix: "); fflush(stdout);
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{
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xs *i = xs_strip_i(xs_readline(stdin));
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if (*i) {
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if (xs_endswith(i, "/"))
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i = xs_crop_i(i, 0, -1);
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srv_config = xs_dict_set(srv_config, "prefix", i);
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}
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}
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printf("Admin email address (optional): "); fflush(stdout);
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{
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xs *i = xs_strip_i(xs_readline(stdin));
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srv_config = xs_dict_set(srv_config, "admin_email", i);
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}
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if (mkdirx(srv_basedir) == -1) {
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printf("ERROR: cannot create directory '%s'\n", srv_basedir);
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return 1;
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}
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xs *udir = xs_fmt("%s/user", srv_basedir);
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mkdirx(udir);
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xs *odir = xs_fmt("%s/object", srv_basedir);
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mkdirx(odir);
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xs *qdir = xs_fmt("%s/queue", srv_basedir);
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mkdirx(qdir);
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xs *ibdir = xs_fmt("%s/inbox", srv_basedir);
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mkdirx(ibdir);
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xs *gfn = xs_fmt("%s/greeting.html", srv_basedir);
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if ((f = fopen(gfn, "w")) == NULL) {
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printf("ERROR: cannot create '%s'\n", gfn);
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return 1;
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}
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fwrite(greeting_html, strlen(greeting_html), 1, f);
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fclose(f);
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xs *sfn = xs_fmt("%s/style.css", srv_basedir);
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if ((f = fopen(sfn, "w")) == NULL) {
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printf("ERROR: cannot create '%s'\n", sfn);
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return 1;
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}
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fwrite(default_css, strlen(default_css), 1, f);
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fclose(f);
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xs *cfn = xs_fmt("%s/server.json", srv_basedir);
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if ((f = fopen(cfn, "w")) == NULL) {
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printf("ERROR: cannot create '%s'\n", cfn);
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return 1;
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}
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xs *j = xs_json_dumps_pp(srv_config, 4);
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fwrite(j, strlen(j), 1, f);
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fclose(f);
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printf("Done.\n");
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return 0;
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}
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void new_password(const char *uid, d_char **clear_pwd, d_char **hashed_pwd)
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/* creates a random password */
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{
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int rndbuf[3];
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xs_rnd_buf(rndbuf, sizeof(rndbuf));
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*clear_pwd = xs_base64_enc((char *)rndbuf, sizeof(rndbuf));
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*hashed_pwd = hash_password(uid, *clear_pwd, NULL);
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}
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int adduser(const char *uid)
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/* creates a new user */
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{
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snac snac;
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xs *config = xs_dict_new();
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xs *date = xs_str_utctime(0, ISO_DATE_SPEC);
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xs *pwd = NULL;
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xs *pwd_f = NULL;
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xs *key = NULL;
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FILE *f;
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if (uid == NULL) {
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printf("Username: "); fflush(stdout);
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uid = xs_strip_i(xs_readline(stdin));
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}
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if (!validate_uid(uid)) {
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printf("ERROR: only alphanumeric characters and _ are allowed in user ids.\n");
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return 1;
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}
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if (user_open(&snac, uid)) {
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printf("ERROR: user '%s' already exists\n", uid);
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return 1;
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}
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new_password(uid, &pwd, &pwd_f);
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config = xs_dict_append(config, "uid", uid);
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config = xs_dict_append(config, "name", uid);
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config = xs_dict_append(config, "avatar", "");
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config = xs_dict_append(config, "bio", "");
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config = xs_dict_append(config, "cw", "");
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config = xs_dict_append(config, "published", date);
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config = xs_dict_append(config, "passwd", pwd_f);
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xs *basedir = xs_fmt("%s/user/%s", srv_basedir, uid);
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if (mkdirx(basedir) == -1) {
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printf("ERROR: cannot create directory '%s'\n", basedir);
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return 0;
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}
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const char *dirs[] = {
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"followers", "following", "muted", "hidden",
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"public", "private", "queue", "history",
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"static", NULL };
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int n;
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for (n = 0; dirs[n]; n++) {
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xs *d = xs_fmt("%s/%s", basedir, dirs[n]);
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mkdirx(d);
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}
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xs *cfn = xs_fmt("%s/user.json", basedir);
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if ((f = fopen(cfn, "w")) == NULL) {
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printf("ERROR: cannot create '%s'\n", cfn);
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return 1;
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}
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else {
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xs *j = xs_json_dumps_pp(config, 4);
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fwrite(j, strlen(j), 1, f);
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fclose(f);
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}
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printf("\nCreating RSA key...\n");
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key = xs_evp_genkey(4096);
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printf("Done.\n");
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xs *kfn = xs_fmt("%s/key.json", basedir);
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if ((f = fopen(kfn, "w")) == NULL) {
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printf("ERROR: cannot create '%s'\n", kfn);
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return 1;
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}
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else {
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xs *j = xs_json_dumps_pp(key, 4);
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fwrite(j, strlen(j), 1, f);
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fclose(f);
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}
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printf("\nUser password is %s\n", pwd);
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printf("\nGo to %s/%s and continue configuring your user there.\n", srv_baseurl, uid);
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return 0;
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}
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int resetpwd(snac *snac)
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/* creates a new password for the user */
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{
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xs *clear_pwd = NULL;
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xs *hashed_pwd = NULL;
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xs *fn = xs_fmt("%s/user.json", snac->basedir);
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FILE *f;
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int ret = 0;
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new_password(snac->uid, &clear_pwd, &hashed_pwd);
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snac->config = xs_dict_set(snac->config, "passwd", hashed_pwd);
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if ((f = fopen(fn, "w")) != NULL) {
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xs *j = xs_json_dumps_pp(snac->config, 4);
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fwrite(j, strlen(j), 1, f);
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fclose(f);
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printf("New password for user %s is %s\n", snac->uid, clear_pwd);
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}
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else {
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printf("ERROR: cannot write to %s\n", fn);
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ret = 1;
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}
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return ret;
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}
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