2.78 main.c
  1/* snac - A simple, minimalistic ActivityPub instance */
  2/* copyright (c) 2022 - 2025 grunfink et al. / MIT license */
  3
  4#include "xs.h"
  5#include "xs_io.h"
  6#include "xs_json.h"
  7#include "xs_time.h"
  8#include "xs_openssl.h"
  9#include "xs_match.h"
 10
 11#include "snac.h"
 12
 13#include <sys/stat.h>
 14#include <sys/wait.h>
 15
 16int usage(void)
 17{
 18    printf("snac " VERSION " - A simple, minimalistic ActivityPub instance\n");
 19    printf("Copyright (c) 2022 - 2025 grunfink et al. / MIT license\n");
 20    printf("\n");
 21    printf("Commands:\n");
 22    printf("\n");
 23    printf("init [{basedir}]                     Initializes the data storage\n");
 24    printf("upgrade {basedir}                    Upgrade to a new version\n");
 25    printf("adduser {basedir} [{uid}]            Adds a new user\n");
 26    printf("deluser {basedir} {uid}              Deletes a user\n");
 27    printf("httpd {basedir}                      Starts the HTTPD daemon\n");
 28    printf("purge {basedir}                      Purges old data\n");
 29    printf("state {basedir}                      Prints server state\n");
 30    printf("webfinger {basedir} {account}        Queries about an account (@user@host or actor url)\n");
 31    printf("queue {basedir} {uid}                Processes a user queue\n");
 32    printf("follow {basedir} {uid} {actor}       Follows an actor\n");
 33    printf("unfollow {basedir} {uid} {actor}     Unfollows an actor\n");
 34    printf("request {basedir} {uid} {url}        Requests an object\n");
 35    printf("insert {basedir} {uid} {url}         Requests an object and inserts it into the timeline\n");
 36    printf("actor {basedir} [{uid}] {url}        Requests an actor\n");
 37    printf("note {basedir} {uid} {text} [files...] Sends a note with optional attachments\n");
 38    printf("note_unlisted {basedir} {uid} {text} [files...] Sends an unlisted note with optional attachments\n");
 39    printf("note_mention {basedir} {uid} {text} [files...] Sends a note only to mentioned accounts\n");
 40    printf("boost|announce {basedir} {uid} {url} Boosts (announces) a post\n");
 41    printf("unboost {basedir} {uid} {url}        Unboosts a post\n");
 42    printf("resetpwd {basedir} {uid}             Resets the password of a user\n");
 43    printf("ping {basedir} {uid} {actor}         Pings an actor\n");
 44    printf("webfinger_s {basedir} {uid} {account} Queries about an account (@user@host or actor url)\n");
 45    printf("pin {basedir} {uid} {msg_url}        Pins a message\n");
 46    printf("unpin {basedir} {uid} {msg_url}      Unpins a message\n");
 47    printf("bookmark {basedir} {uid} {msg_url}   Bookmarks a message\n");
 48    printf("unbookmark {basedir} {uid} {msg_url} Unbookmarks a message\n");
 49    printf("block {basedir} {instance_url}       Blocks a full instance\n");
 50    printf("unblock {basedir} {instance_url}     Unblocks a full instance\n");
 51    printf("limit {basedir} {uid} {actor}        Limits an actor (drops their announces)\n");
 52    printf("unlimit {basedir} {uid} {actor}      Unlimits an actor\n");
 53    printf("unmute {basedir} {uid} {actor}       Unmutes a previously muted actor\n");
 54    printf("verify_links {basedir} {uid}         Verifies a user's links (in the metadata)\n");
 55    printf("search {basedir} {uid} {regex}       Searches posts by content\n");
 56    printf("export_csv {basedir} {uid}           Exports data as CSV files\n");
 57    printf("alias {basedir} {uid} {account}      Sets account (@user@host or actor url) as an alias\n");
 58    printf("migrate {basedir} {uid}              Migrates to the account defined as the alias\n");
 59    printf("import_csv {basedir} {uid}           Imports data from CSV files\n");
 60    printf("import_list {basedir} {uid} {file}   Imports a Mastodon CSV list file\n");
 61    printf("import_block_list {basedir} {uid} {file} Imports a Mastodon CSV block list file\n");
 62    printf("lists {basedir} {uid}                Returns the names of the lists created by the user\n");
 63    printf("list_members {basedir} {uid} {name}  Returns the list of accounts inside a list\n");
 64    printf("create_list {basedir} {uid} {name}   Creates a new list\n");
 65    printf("delete_list {basedir} {uid} {name}   Deletes an existing list\n");
 66    printf("list_add {basedir} {uid} {name} {acct} Adds an account (@user@host or actor url) to a list\n");
 67    printf("list_del {basedir} {uid} {name} {actor} Deletes an actor URL from a list\n");
 68
 69    return 1;
 70}
 71
 72
 73char *get_argv(int *argi, int argc, char *argv[])
 74{
 75    if (*argi < argc)
 76        return argv[(*argi)++];
 77    else
 78        return NULL;
 79}
 80
 81
 82#define GET_ARGV() get_argv(&argi, argc, argv)
 83
 84int main(int argc, char *argv[])
 85{
 86    char *cmd;
 87    char *basedir;
 88    char *user;
 89    char *url;
 90    int argi = 1;
 91    snac snac;
 92
 93    /* ensure group has write access */
 94    umask(0007);
 95
 96    if ((cmd = GET_ARGV()) == NULL)
 97        return usage();
 98
 99    if (strcmp(cmd, "init") == 0) { /** **/
100        /* initialize the data storage */
101        /* ... */
102        basedir = GET_ARGV();
103
104        return snac_init(basedir);
105    }
106
107    if ((basedir = getenv("SNAC_BASEDIR")) == NULL) {
108        if ((basedir = GET_ARGV()) == NULL)
109            return usage();
110    }
111
112    if (strcmp(cmd, "upgrade") == 0) { /** **/
113        int ret;
114
115        /* upgrade */
116        if ((ret = srv_open(basedir, 1)) == 1)
117            srv_log(xs_dup("OK"));
118
119        return ret;
120    }
121
122    if (!srv_open(basedir, 0)) {
123        srv_log(xs_fmt("error opening data storage at %s", basedir));
124        return 1;
125    }
126
127    if (strcmp(cmd, "adduser") == 0) { /** **/
128        user = GET_ARGV();
129
130        return adduser(user);
131
132        return 0;
133    }
134
135    if (strcmp(cmd, "httpd") == 0) { /** **/
136        httpd();
137        srv_free();
138        return 0;
139    }
140
141    if (strcmp(cmd, "purge") == 0) { /** **/
142        purge_all();
143        return 0;
144    }
145
146    if (strcmp(cmd, "poll_hashtag_rss") == 0) { /** **/
147        rss_poll_hashtags();
148        return 0;
149    }
150
151    if (strcmp(cmd, "state") == 0) { /** **/
152        xs *shm_name = NULL;
153        srv_state *p_state = srv_state_op(&shm_name, 1);
154
155        if (p_state == NULL)
156            return 1;
157
158        srv_state ss = *p_state;
159        int n;
160
161        printf("server: %s (%s)\n", xs_dict_get(srv_config, "host"), USER_AGENT);
162        xs *uptime = xs_str_time_diff(time(NULL) - ss.srv_start_time);
163        printf("uptime: %s\n", uptime);
164        printf("job fifo size (cur): %d\n", ss.job_fifo_size);
165        printf("job fifo size (peak): %d\n", ss.peak_job_fifo_size);
166        char *th_states[] = { "stopped", "waiting", "input", "output" };
167
168        for (n = 0; n < ss.n_threads; n++)
169            printf("thread #%d state: %s\n", n, th_states[ss.th_state[n]]);
170
171        return 0;
172    }
173
174    if ((user = GET_ARGV()) == NULL)
175        return usage();
176
177    if (strcmp(cmd, "block") == 0) { /** **/
178        int ret = instance_block(user);
179
180        if (ret < 0) {
181            fprintf(stderr, "Error blocking instance %s: %d\n", user, ret);
182            return 1;
183        }
184
185        return 0;
186    }
187
188    if (strcmp(cmd, "unblock") == 0) { /** **/
189        int ret = instance_unblock(user);
190
191        if (ret < 0) {
192            fprintf(stderr, "Error unblocking instance %s: %d\n", user, ret);
193            return 1;
194        }
195
196        return 0;
197    }
198
199    if (strcmp(cmd, "webfinger") == 0) { /** **/
200        xs *actor = NULL;
201        xs *uid = NULL;
202        int status;
203
204        status = webfinger_request(user, &actor, &uid);
205
206        printf("status: %d\n", status);
207        if (actor != NULL)
208            printf("actor: %s\n", actor);
209        if (uid != NULL)
210            printf("uid: %s\n", uid);
211
212        return 0;
213    }
214
215    if (argi == argc && strcmp(cmd, "actor") == 0) { /** **/
216        /* query an actor without user (non-signed) */
217        xs *actor = NULL;
218        int status;
219
220        status = actor_request(NULL, user, &actor);
221
222        printf("status: %d\n", status);
223        if (valid_status(status)) {
224            xs_json_dump(actor, 4, stdout);
225            printf("\n");
226        }
227
228        return 0;
229    }
230
231    if (!user_open(&snac, user)) {
232        printf("invalid user '%s'\n", user);
233        return 1;
234    }
235
236    lastlog_write(&snac, "cmdline");
237
238    if (strcmp(cmd, "resetpwd") == 0) { /** **/
239        return resetpwd(&snac);
240    }
241
242    if (strcmp(cmd, "deluser") == 0) { /** **/
243        return deluser(&snac);
244    }
245
246    if (strcmp(cmd, "update") == 0) { /** **/
247        xs *a_msg = msg_actor(&snac);
248        xs *u_msg = msg_update(&snac, a_msg);
249        enqueue_message(&snac, u_msg);
250        return 0;
251    }
252
253    if (strcmp(cmd, "queue") == 0) { /** **/
254        process_user_queue(&snac);
255        return 0;
256    }
257
258    if (strcmp(cmd, "verify_links") == 0) { /** **/
259        verify_links(&snac);
260        return 0;
261    }
262
263    if (strcmp(cmd, "timeline") == 0) { /** **/
264#if 0
265        xs *list = local_list(&snac, XS_ALL);
266        xs *body = html_timeline(&snac, list, 1);
267
268        printf("%s\n", body);
269        user_free(&snac);
270        srv_free();
271#endif
272
273        xs *idx  = xs_fmt("%s/private.idx", snac.basedir);
274        xs *list = index_list_desc(idx, 0, 256);
275        xs *tl   = timeline_top_level(&snac, list);
276
277        xs_json_dump(tl, 4, stdout);
278
279        return 0;
280    }
281
282    if (strcmp(cmd, "export_csv") == 0) { /** **/
283        export_csv(&snac);
284        return 0;
285    }
286
287    if (strcmp(cmd, "import_csv") == 0) { /** **/
288        import_csv(&snac);
289        return 0;
290    }
291
292    if (strcmp(cmd, "migrate") == 0) { /** **/
293        return migrate_account(&snac);
294    }
295
296    if (strcmp(cmd, "lists") == 0) { /** **/
297        xs *lol = list_maint(&snac, NULL, 0);
298        const xs_list *l;
299
300        xs_list_foreach(lol, l) {
301            printf("%s (%s)\n", xs_list_get(l, 1), xs_list_get(l, 0));
302        }
303
304        return 0;
305    }
306
307    if ((url = GET_ARGV()) == NULL)
308        return usage();
309
310    if (strcmp(cmd, "list_members") == 0) { /** **/
311        xs *lid = list_maint(&snac, url, 4);
312
313        if (lid != NULL) {
314            xs *lcont = list_content(&snac, lid, NULL, 0);
315            const char *md5;
316
317            xs_list_foreach(lcont, md5) {
318                xs *actor = NULL;
319
320                if (valid_status(object_get_by_md5(md5, &actor))) {
321                    printf("%s (%s)\n", xs_dict_get(actor, "id"), xs_dict_get_def(actor, "preferredUsername", ""));
322                }
323            }
324        }
325        else
326            fprintf(stderr, "Cannot find a list named '%s'\n", url);
327
328        return 0;
329    }
330
331    if (strcmp(cmd, "create_list") == 0) { /** **/
332        xs *lid = list_maint(&snac, url, 4);
333
334        if (lid == NULL) {
335            xs *n_lid = list_maint(&snac, url, 1);
336            printf("New list named '%s' created (%s)\n", url, n_lid);
337        }
338        else
339            fprintf(stderr, "A list named '%s' already exist\n", url);
340
341        return 0;
342    }
343
344    if (strcmp(cmd, "delete_list") == 0) { /** **/
345        xs *lid = list_maint(&snac, url, 4);
346
347        if (lid != NULL) {
348            list_maint(&snac, lid, 2);
349            printf("List '%s' (%s) deleted\n", url, lid);
350        }
351        else
352            fprintf(stderr, "Cannot find a list named '%s'\n", url);
353
354        return 0;
355    }
356
357    if (strcmp(cmd, "list_add") == 0) { /** **/
358        const char *account = GET_ARGV();
359
360        if (account != NULL) {
361            xs *lid = list_maint(&snac, url, 4);
362
363            if (lid != NULL) {
364                xs *actor = NULL;
365                xs *uid = NULL;
366
367                if (valid_status(webfinger_request(account, &actor, &uid))) {
368                    xs *md5 = xs_md5_hex(actor, strlen(actor));
369
370                    list_content(&snac, lid, md5, 1);
371                    printf("Actor %s (%s) added to list '%s' (%s)\n", actor, uid, url, lid);
372                }
373                else
374                    fprintf(stderr, "Cannot resolve account '%s'\n", account);
375            }
376            else
377                fprintf(stderr, "Cannot find a list named '%s'\n", url);
378
379        }
380
381        return 0;
382    }
383
384    if (strcmp(cmd, "list_del") == 0) { /** **/
385        const char *account = GET_ARGV();
386
387        if (account != NULL) {
388            xs *lid = list_maint(&snac, url, 4);
389
390            if (lid != NULL) {
391                xs *md5 = xs_md5_hex(account, strlen(account));
392
393                list_content(&snac, lid, md5, 2);
394                printf("Actor %s deleted from list '%s' (%s)\n", account, url, lid);
395            }
396            else
397                fprintf(stderr, "Cannot find a list named '%s'\n", url);
398
399        }
400
401        return 0;
402    }
403
404    if (strcmp(cmd, "alias") == 0) { /** **/
405        xs *actor = NULL;
406        xs *uid = NULL;
407        int status = HTTP_STATUS_OK;
408
409        if (*url == '\0')
410            actor = xs_dup("");
411        else
412            status = webfinger_request(url, &actor, &uid);
413
414        if (valid_status(status)) {
415            if (strcmp(actor, snac.actor) == 0) {
416                snac_log(&snac, xs_fmt("You can't be your own alias"));
417                return 1;
418            }
419            else {
420                snac.config = xs_dict_set(snac.config, "alias", actor);
421                snac.config = xs_dict_set(snac.config, "alias_raw", url);
422
423                user_persist(&snac, 1);
424            }
425        }
426        else {
427            snac_log(&snac, xs_fmt("Webfinger error for %s %d", url, status));
428            return 1;
429        }
430
431        return 0;
432    }
433
434    if (strcmp(cmd, "webfinger_s") == 0) { /** **/
435        xs *actor = NULL;
436        xs *uid = NULL;
437        int status;
438
439        status = webfinger_request_signed(&snac, url, &actor, &uid);
440
441        printf("status: %d\n", status);
442        if (actor != NULL)
443            printf("actor: %s\n", actor);
444        if (uid != NULL)
445            printf("uid: %s\n", uid);
446
447        return 0;
448    }
449
450    if (strcmp(cmd, "boost") == 0 || strcmp(cmd, "announce") == 0) { /** **/
451        xs *msg = msg_admiration(&snac, url, "Announce");
452
453        if (msg != NULL) {
454            enqueue_message(&snac, msg);
455
456            if (dbglevel) {
457                xs_json_dump(msg, 4, stdout);
458            }
459        }
460
461        return 0;
462    }
463
464
465    if (strcmp(cmd, "assist") == 0) { /** **/
466        /* undocumented: experimental (do not use) */
467        xs *msg = msg_admiration(&snac, url, "Accept");
468
469        if (msg != NULL) {
470            enqueue_message(&snac, msg);
471
472            if (dbglevel) {
473                xs_json_dump(msg, 4, stdout);
474            }
475        }
476
477        return 0;
478    }
479
480    if (strcmp(cmd, "unboost") == 0) { /** **/
481        xs *msg = msg_repulsion(&snac, url, "Announce");
482
483        if (msg != NULL) {
484            enqueue_message(&snac, msg);
485
486            if (dbglevel) {
487                xs_json_dump(msg, 4, stdout);
488            }
489        }
490
491        return 0;
492    }
493
494    if (strcmp(cmd, "follow") == 0) { /** **/
495        xs *msg = msg_follow(&snac, url);
496
497        if (msg != NULL) {
498            const char *actor = xs_dict_get(msg, "object");
499
500            following_add(&snac, actor, msg);
501
502            enqueue_output_by_actor(&snac, msg, actor, 0);
503
504            if (dbglevel) {
505                xs_json_dump(msg, 4, stdout);
506            }
507        }
508
509        return 0;
510    }
511
512    if (strcmp(cmd, "unfollow") == 0) { /** **/
513        xs *object = NULL;
514
515        if (valid_status(following_get(&snac, url, &object))) {
516            xs *msg = msg_undo(&snac, xs_dict_get(object, "object"));
517
518            following_del(&snac, url);
519
520            enqueue_output_by_actor(&snac, msg, url, 0);
521
522            snac_log(&snac, xs_fmt("unfollowed actor %s", url));
523        }
524        else
525            snac_log(&snac, xs_fmt("actor is not being followed %s", url));
526
527        return 0;
528    }
529
530    if (strcmp(cmd, "limit") == 0) { /** **/
531        int ret;
532
533        if (!following_check(&snac, url))
534            snac_log(&snac, xs_fmt("actor %s is not being followed", url));
535        else
536        if ((ret = limit(&snac, url)) == 0)
537            snac_log(&snac, xs_fmt("actor %s is now limited", url));
538        else
539            snac_log(&snac, xs_fmt("error limiting actor %s (%d)", url, ret));
540
541        return 0;
542    }
543
544    if (strcmp(cmd, "unlimit") == 0) { /** **/
545        int ret;
546
547        if (!following_check(&snac, url))
548            snac_log(&snac, xs_fmt("actor %s is not being followed", url));
549        else
550        if ((ret = unlimit(&snac, url)) == 0)
551            snac_log(&snac, xs_fmt("actor %s is no longer limited", url));
552        else
553            snac_log(&snac, xs_fmt("error unlimiting actor %s (%d)", url, ret));
554
555        return 0;
556    }
557
558    if (strcmp(cmd, "unmute") == 0) { /** **/
559        if (is_muted(&snac, url)) {
560            unmute(&snac, url);
561
562            printf("%s unmuted\n", url);
563        }
564        else
565            printf("%s actor is not muted\n", url);
566
567        return 0;
568    }
569
570    if (strcmp(cmd, "search") == 0) { /** **/
571        int to;
572
573        /* 'url' contains the regex */
574        xs *r = content_search(&snac, url, 1, 0, XS_ALL, 10, &to);
575
576        int c = 0;
577        const char *v;
578
579        /* print results as standalone links */
580        while (xs_list_next(r, &v, &c)) {
581            printf("%s/admin/p/%s\n", snac.actor, v);
582        }
583
584        return 0;
585    }
586
587    if (strcmp(cmd, "ping") == 0) { /** **/
588        xs *actor_o = NULL;
589
590        if (!xs_startswith(url, "https:/")) {
591            /* try to resolve via webfinger */
592            if (!valid_status(webfinger_request(url, &url, NULL))) {
593                srv_log(xs_fmt("cannot resolve %s via webfinger", url));
594                return 1;
595            }
596        }
597
598        if (valid_status(actor_request(&snac, url, &actor_o))) {
599            xs *msg = msg_ping(&snac, url);
600
601            enqueue_output_by_actor(&snac, msg, url, 0);
602
603            if (dbglevel) {
604                xs_json_dump(msg, 4, stdout);
605            }
606
607            srv_log(xs_fmt("Ping sent to %s -- see log for Pong reply", url));
608        }
609        else {
610            srv_log(xs_fmt("Error getting actor %s", url));
611            return 1;
612        }
613
614        return 0;
615    }
616
617    if (strcmp(cmd, "pin") == 0) { /** **/
618        int ret = pin(&snac, url);
619        if (ret < 0) {
620            fprintf(stderr, "error pinning %s %d\n", url, ret);
621            return 1;
622        }
623
624        return 0;
625    }
626
627    if (strcmp(cmd, "unpin") == 0) { /** **/
628        int ret = unpin(&snac, url);
629        if (ret < 0) {
630            fprintf(stderr, "error unpinning %s %d\n", url, ret);
631            return 1;
632        }
633
634        return 0;
635    }
636
637    if (strcmp(cmd, "bookmark") == 0) { /** **/
638        int ret = bookmark(&snac, url);
639        if (ret < 0) {
640            fprintf(stderr, "error bookmarking %s %d\n", url, ret);
641            return 1;
642        }
643
644        return 0;
645    }
646
647    if (strcmp(cmd, "unbookmark") == 0) { /** **/
648        int ret = unbookmark(&snac, url);
649        if (ret < 0) {
650            fprintf(stderr, "error unbookmarking %s %d\n", url, ret);
651            return 1;
652        }
653
654        return 0;
655    }
656
657    if (strcmp(cmd, "question") == 0) { /** **/
658        int end_secs = 5 * 60;
659        xs *opts = xs_split(url, ";");
660
661        xs *msg = msg_question(&snac, "Poll", NULL, opts, 0, end_secs);
662        xs *c_msg = msg_create(&snac, msg);
663
664        if (dbglevel) {
665            xs_json_dump(c_msg, 4, stdout);
666        }
667
668        enqueue_message(&snac, c_msg);
669        enqueue_close_question(&snac, xs_dict_get(msg, "id"), end_secs);
670
671        timeline_add(&snac, xs_dict_get(msg, "id"), msg);
672
673        return 0;
674    }
675
676    if (strcmp(cmd, "request") == 0) { /** **/
677        int status;
678        xs *data = NULL;
679
680        status = activitypub_request(&snac, url, &data);
681
682        printf("status: %d\n", status);
683
684        if (data != NULL) {
685            xs_json_dump(data, 4, stdout);
686        }
687
688        return 0;
689    }
690
691    if (strcmp(cmd, "insert") == 0) { /** **/
692        int status;
693        xs *data = NULL;
694
695        status = activitypub_request(&snac, url, &data);
696
697        printf("status: %d\n", status);
698
699        if (data != NULL) {
700            xs_json_dump(data, 4, stdout);
701            enqueue_actor_refresh(&snac, xs_dict_get(data, "attributedTo"), 0);
702
703            if (!timeline_here(&snac, url))
704                timeline_add(&snac, url, data);
705            else
706                printf("Post %s already here\n", url);
707        }
708
709        return 0;
710    }
711
712    if (strcmp(cmd, "request2") == 0) { /** **/
713        enqueue_object_request(&snac, url, 2);
714
715        return 0;
716    }
717
718    if (strcmp(cmd, "actor") == 0) { /** **/
719        int status;
720        xs *data = NULL;
721
722        status = actor_request(&snac, url, &data);
723
724        printf("status: %d\n", status);
725
726        if (valid_status(status)) {
727            xs_json_dump(data, 4, stdout);
728        }
729
730        return 0;
731    }
732
733    if (strcmp(cmd, "import_list") == 0) { /** **/
734        import_list_csv(&snac, url);
735
736        return 0;
737    }
738
739    if (strcmp(cmd, "import_block_list") == 0) { /** **/
740        import_blocked_accounts_csv(&snac, url);
741
742        return 0;
743    }
744
745    if (strcmp(cmd, "note") == 0 ||             /** **/
746        strcmp(cmd, "note_unlisted") == 0 ||    /** **/
747        strcmp(cmd, "note_mention") == 0) {     /** **/
748        xs *content = NULL;
749        xs *msg = NULL;
750        xs *c_msg = NULL;
751        xs *attl = xs_list_new();
752        char *fn = NULL;
753
754        /* iterate possible attachments */
755        while ((fn = GET_ARGV())) {
756            FILE *f;
757
758            if ((f = fopen(fn, "rb")) != NULL) {
759                /* get the file size and content */
760                fseek(f, 0, SEEK_END);
761                int sz = ftell(f);
762                fseek(f, 0, SEEK_SET);
763                xs *atc = xs_readall(f);
764                fclose(f);
765
766                char *ext = strrchr(fn, '.');
767                xs *hash  = xs_md5_hex(fn, strlen(fn));
768                xs *id    = xs_fmt("%s%s", hash, ext);
769                xs *url   = xs_fmt("%s/s/%s", snac.actor, id);
770
771                /* store */
772                static_put(&snac, id, atc, sz);
773
774                xs *l = xs_list_new();
775
776                l = xs_list_append(l, url);
777                l = xs_list_append(l, ""); /* alt text */
778
779                attl = xs_list_append(attl, l);
780            }
781            else
782                fprintf(stderr, "Error opening '%s' as attachment\n", fn);
783        }
784
785        if (strcmp(url, "-e") == 0) {
786            /* get the content from an editor */
787#define EDITOR "$EDITOR "
788            char cmd[] = EDITOR "/tmp/snac-XXXXXX";
789            FILE *f;
790            int fd = mkstemp(cmd + strlen(EDITOR));
791
792            if (fd >= 0) {
793                int status = system(cmd);
794
795                if (WIFEXITED(status) && WEXITSTATUS(status) == 0 && (f = fdopen(fd, "r")) != NULL) {
796                    content = xs_readall(f);
797                    fclose(f);
798                    unlink(cmd + strlen(EDITOR));
799                } else {
800                    printf("Nothing to send\n");
801                    close(fd);
802                    return 1;
803                }
804            } else {
805                fprintf(stderr, "Temp file creation failed\n");
806                return 1;
807            }
808        }
809        else
810        if (strcmp(url, "-") == 0) {
811            /* get the content from stdin */
812            content = xs_readall(stdin);
813        }
814        else
815            content = xs_dup(url);
816
817        if (!content || !*content) {
818            printf("Nothing to send\n");
819            return 1;
820        }
821
822        int scope = 0;
823        if (strcmp(cmd, "note_mention") == 0)
824            scope = 1;
825        else
826        if (strcmp(cmd, "note_unlisted") == 0)
827            scope = 2;
828
829        msg = msg_note(&snac, content, NULL, NULL, attl, scope, getenv("LANG"), NULL);
830
831        c_msg = msg_create(&snac, msg);
832
833        if (dbglevel) {
834            xs_json_dump(c_msg, 4, stdout);
835        }
836
837        enqueue_message(&snac, c_msg);
838        enqueue_webmention(msg);
839
840        timeline_add(&snac, xs_dict_get(msg, "id"), msg);
841
842        return 0;
843    }
844
845    fprintf(stderr, "ERROR: bad command '%s'\n", cmd);
846
847    return 1;
848}