diff --git a/httpd.c b/httpd.c index 81d2f9e..0eff657 100644 --- a/httpd.c +++ b/httpd.c @@ -279,6 +279,7 @@ void httpd_connection(FILE *f) xs *payload = NULL; xs *etag = NULL; xs *last_modified = NULL; + xs *link = NULL; int p_size = 0; const char *p; int fcgi_id; @@ -326,7 +327,7 @@ void httpd_connection(FILE *f) status = oauth_get_handler(req, q_path, &body, &b_size, &ctype); if (status == 0) - status = mastoapi_get_handler(req, q_path, &body, &b_size, &ctype); + status = mastoapi_get_handler(req, q_path, &body, &b_size, &ctype, &link); #endif /* NO_MASTODON_API */ if (status == 0) @@ -426,6 +427,8 @@ void httpd_connection(FILE *f) headers = xs_dict_append(headers, "etag", etag); if (!xs_is_null(last_modified)) headers = xs_dict_append(headers, "last-modified", last_modified); + if (!xs_is_null(link)) + headers = xs_dict_append(headers, "Link", link); /* if there are any additional headers, add them */ const xs_dict *more_headers = xs_dict_get(srv_config, "http_headers"); diff --git a/mastoapi.c b/mastoapi.c index be8be80..6b816f4 100644 --- a/mastoapi.c +++ b/mastoapi.c @@ -1434,8 +1434,35 @@ xs_list *mastoapi_timeline(snac *user, const xs_dict *args, const char *index_fn } +xs_str *timeline_link_header(const char *endpoint, xs_list *timeline) +/* returns a Link header with paging information */ +{ + xs_str *s = NULL; + + if (xs_list_len(timeline) == 0) + return NULL; + + const xs_dict *first_st = xs_list_get(timeline, 0); + const xs_dict *last_st = xs_list_get(timeline, -1); + const char *first_id = xs_dict_get(first_st, "id"); + const char *last_id = xs_dict_get(last_st, "id"); + const char *host = xs_dict_get(srv_config, "host"); + const char *protocol = xs_dict_get_def(srv_config, "protocol", "https"); + + s = xs_fmt( + "<%s:/" "/%s%s?max_id=%s>; rel=\"next\", " + "<%s:/" "/%s%s?since_id=%s>; rel=\"prev\"", + protocol, host, endpoint, last_id, + protocol, host, endpoint, first_id); + + srv_debug(1, xs_fmt("timeline_link_header %s", s)); + + return s; +} + + int mastoapi_get_handler(const xs_dict *req, const char *q_path, - char **body, int *b_size, char **ctype) + char **body, int *b_size, char **ctype, xs_str **link) { (void)b_size; @@ -1695,6 +1722,8 @@ int mastoapi_get_handler(const xs_dict *req, const char *q_path, xs *ifn = user_index_fn(&snac1, "private"); xs *out = mastoapi_timeline(&snac1, args, ifn); + *link = timeline_link_header(cmd, out); + *body = xs_json_dumps(out, 4); *ctype = "application/json"; status = HTTP_STATUS_OK; diff --git a/snac.h b/snac.h index acc175f..5b8b2f8 100644 --- a/snac.h +++ b/snac.h @@ -384,7 +384,7 @@ int oauth_post_handler(const xs_dict *req, const char *q_path, const char *payload, int p_size, char **body, int *b_size, char **ctype); int mastoapi_get_handler(const xs_dict *req, const char *q_path, - char **body, int *b_size, char **ctype); + char **body, int *b_size, char **ctype, xs_str **link); int mastoapi_post_handler(const xs_dict *req, const char *q_path, const char *payload, int p_size, char **body, int *b_size, char **ctype);