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New function content_check().

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default 2024-03-11 06:00:21 +01:00
parent 951e6b2315
commit 60c2a50ed9
3 changed files with 48 additions and 1 deletions
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7
activitypub.c
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@ -1921,10 +1921,15 @@ int process_input_message(snac *snac, xs_dict *msg, xs_dict *req)
snac_debug(snac, 0, xs_fmt("dropped reply %s to hidden post %s", id, in_reply_to));
}
else {
if (content_check("filter_reject.txt", object)) {
snac_log(snac, xs_fmt("rejected by content %s", id));
return 1;
}
timeline_request(snac, &in_reply_to, &wrk, 0);
if (timeline_add(snac, id, object)) {
snac_log(snac, xs_fmt("new 'Note' %s %s", actor, id));
snac_log(snac, xs_fmt("new '%s' %s %s", utype, actor, id));
do_notify = 1;
}

40
data.c
View file

@ -9,6 +9,7 @@
#include "xs_glob.h"
#include "xs_set.h"
#include "xs_time.h"
#include "xs_regex.h"
#include "snac.h"
@ -2006,6 +2007,45 @@ int instance_unblock(const char *instance)
}
/** content filtering **/
int content_check(const char *file, const xs_dict *msg)
/* checks if message content matches any of the regexes in file */
{
xs *fn = xs_fmt("%s/%s", srv_basedir, file);
FILE *f;
int r = 0;
char *v = xs_dict_get(msg, "content");
if (xs_type(v) == XSTYPE_STRING && *v) {
if ((f = fopen(fn, "r")) != NULL) {
srv_debug(1, xs_fmt("content_check: loading regexes from %s", fn));
xs *c = xs_regex_replace(v, "<[^>]+>", " ");
c = xs_regex_replace_i(c, " {2,}", " ");
c = xs_tolower_i(c);
while (!r && !feof(f)) {
xs *rx = xs_strip_i(xs_readline(f));
if (*rx) {
xs *l = xs_regex_select_n(c, rx, 1);
if (xs_list_len(l)) {
srv_debug(1, xs_fmt("content_check: match for '%s'", rx));
r = 1;
}
}
}
fclose(f);
}
}
return r;
}
/** notifications **/
xs_str *notify_check_time(snac *snac, int reset)

2
snac.h
View file

@ -204,6 +204,8 @@ int is_instance_blocked(const char *instance);
int instance_block(const char *instance);
int instance_unblock(const char *instance);
int content_check(const char *file, const xs_dict *msg);
void enqueue_input(snac *snac, const xs_dict *msg, const xs_dict *req, int retries);
void enqueue_shared_input(const xs_dict *msg, const xs_dict *req, int retries);
void enqueue_output_raw(const char *keyid, const char *seckey,