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xs_webmention.h new file.

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grunfink
2025-05-04 11:05:47 +02:00
parent bca51ef5ba
commit 64d99af19c
6 changed files with 128 additions and 8 deletions
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Makefile
+3 -3
View File
@@ -56,7 +56,7 @@ format.o: format.c xs.h xs_regex.h xs_mime.h xs_html.h xs_json.h \
xs_time.h xs_match.h snac.h http_codes.h
html.o: html.c xs.h xs_io.h xs_json.h xs_regex.h xs_set.h xs_openssl.h \
xs_time.h xs_mime.h xs_match.h xs_html.h xs_curl.h xs_unicode.h xs_url.h \
snac.h http_codes.h
xs_random.h snac.h http_codes.h
http.o: http.c xs.h xs_io.h xs_openssl.h xs_curl.h xs_time.h xs_json.h \
snac.h http_codes.h
httpd.o: httpd.c xs.h xs_io.h xs_json.h xs_socket.h xs_unix_socket.h \
@@ -71,10 +71,10 @@ sandbox.o: sandbox.c xs.h snac.h http_codes.h
snac.o: snac.c xs.h xs_hex.h xs_io.h xs_unicode_tbl.h xs_unicode.h \
xs_json.h xs_curl.h xs_openssl.h xs_socket.h xs_unix_socket.h xs_url.h \
xs_httpd.h xs_mime.h xs_regex.h xs_set.h xs_time.h xs_glob.h xs_random.h \
xs_match.h xs_fcgi.h xs_html.h xs_po.h snac.h http_codes.h
xs_match.h xs_fcgi.h xs_html.h xs_po.h xs_webmention.h snac.h \
http_codes.h
upgrade.o: upgrade.c xs.h xs_io.h xs_json.h xs_glob.h snac.h http_codes.h
utils.o: utils.c xs.h xs_io.h xs_json.h xs_time.h xs_openssl.h \
xs_random.h xs_glob.h xs_curl.h xs_regex.h snac.h http_codes.h
webfinger.o: webfinger.c xs.h xs_json.h xs_curl.h xs_mime.h snac.h \
http_codes.h
tests/smtp.o: tests/smtp.c xs.h xs_curl.h
Makefile.NetBSD
+3 -2
View File
@@ -45,7 +45,7 @@ format.o: format.c xs.h xs_regex.h xs_mime.h xs_html.h xs_json.h \
xs_time.h xs_match.h snac.h http_codes.h
html.o: html.c xs.h xs_io.h xs_json.h xs_regex.h xs_set.h xs_openssl.h \
xs_time.h xs_mime.h xs_match.h xs_html.h xs_curl.h xs_unicode.h xs_url.h \
snac.h http_codes.h
xs_random.h snac.h http_codes.h
http.o: http.c xs.h xs_io.h xs_openssl.h xs_curl.h xs_time.h xs_json.h \
snac.h http_codes.h
httpd.o: httpd.c xs.h xs_io.h xs_json.h xs_socket.h xs_unix_socket.h \
@@ -60,7 +60,8 @@ sandbox.o: sandbox.c xs.h snac.h http_codes.h
snac.o: snac.c xs.h xs_hex.h xs_io.h xs_unicode_tbl.h xs_unicode.h \
xs_json.h xs_curl.h xs_openssl.h xs_socket.h xs_unix_socket.h xs_url.h \
xs_httpd.h xs_mime.h xs_regex.h xs_set.h xs_time.h xs_glob.h xs_random.h \
xs_match.h xs_fcgi.h xs_html.h xs_po.h snac.h http_codes.h
xs_match.h xs_fcgi.h xs_html.h xs_po.h xs_webmention.h snac.h \
http_codes.h
upgrade.o: upgrade.c xs.h xs_io.h xs_json.h xs_glob.h snac.h http_codes.h
utils.o: utils.c xs.h xs_io.h xs_json.h xs_time.h xs_openssl.h \
xs_random.h xs_glob.h xs_curl.h xs_regex.h snac.h http_codes.h
snac.c
+1
View File
@@ -25,6 +25,7 @@
#include "xs_fcgi.h"
#include "xs_html.h"
#include "xs_po.h"
#include "xs_webmention.h"
#include "snac.h"
xs_curl.h
+2 -2
View File
@@ -225,7 +225,7 @@ int xs_smtp_request(const char *url, const char *user, const char *pass,
if (use_ssl)
curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_ALL);
curl_easy_setopt(curl, CURLOPT_MAIL_FROM, from);
rcpt = curl_slist_append(rcpt, to);
@@ -236,7 +236,7 @@ int xs_smtp_request(const char *url, const char *user, const char *pass,
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
curl_slist_free_all(rcpt);
xs_version.h
+1 -1
View File
@@ -1 +1 @@
/* d467dc71e518603250a55c8a67e26cf40e1710e9 2025-02-14T10:21:15+01:00 */
/* 871d420cef893b6efe32869407294baf084ce3ab 2025-05-04T11:01:01+02:00 */
xs_webmention.h
+118
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@@ -0,0 +1,118 @@
/* copyright (c) 2025 grunfink et al. / MIT license */
#ifndef _XS_WEBMENTION_H
#define _XS_WEBMENTION_H
int xs_webmention_send(const char *source, const char *target, const char *user_agent);
#ifdef XS_IMPLEMENTATION
int xs_webmention_send(const char *source, const char *target, const char *user_agent)
/* sends a Webmention to target.
Returns: < 0, error; 0, no Webmention endpoint; > 0, Webmention sent */
{
int status = 0;
xs *endpoint = NULL;
xs *ua = xs_fmt("%s (Webmention)", user_agent ? user_agent : "xs_webmention");
xs *headers = xs_dict_new();
headers = xs_dict_set(headers, "accept", "text/html");
headers = xs_dict_set(headers, "user-agent", ua);
xs *h_req = NULL;
int p_size = 0;
/* try first a HEAD, to see if there is a Webmention Link header */
h_req = xs_http_request("HEAD", target, headers, NULL, 0, &status, NULL, &p_size, 0);
/* return immediate failures */
if (status < 200 || status > 299)
return -1;
const char *link = xs_dict_get(h_req, "link");
if (xs_is_string(link) && xs_regex_match(link, "rel *= *(\"|')?webmention")) {
/* endpoint is between < and > */
xs *r = xs_regex_select_n(link, "<[^>]+>", 1);
if (xs_list_len(r) == 1) {
endpoint = xs_dup(xs_list_get(r, 0));
endpoint = xs_strip_chars_i(endpoint, "<>");
}
}
if (endpoint == NULL) {
/* no Link header; get the content */
xs *g_req = NULL;
xs *payload = NULL;
g_req = xs_http_request("GET", target, headers, NULL, 0, &status, &payload, &p_size, 0);
if (status < 200 || status > 299)
return -1;
const char *ctype = xs_dict_get(g_req, "content-type");
/* not HTML? no point in looking inside */
if (!xs_is_string(ctype) || xs_str_in(ctype, "text/html") == -1)
return -2;
if (!xs_is_string(payload))
return -3;
xs *links = xs_regex_select(payload, "<(a +|link +)[^>]+>");
const char *link;
xs_list_foreach(links, link) {
if (xs_regex_match(link, "rel *= *(\"|')?webmention")) {
/* found; extract the href */
xs *r = xs_regex_select_n(link, "href *= *(\"|')?[^\"]+(\"|')", 1);
if (xs_list_len(r) == 1) {
xs *l = xs_split_n(xs_list_get(r, 0), "=", 1);
if (xs_list_len(l) == 2) {
endpoint = xs_dup(xs_list_get(l, 1));
endpoint = xs_strip_chars_i(endpoint, " \"'");
break;
}
}
}
}
}
/* is it a relative endpoint? */
if (xs_is_string(endpoint)) {
if (!xs_startswith(endpoint, "https://") && !xs_startswith(endpoint, "http://")) {
xs *l = xs_split(target, "/");
if (xs_list_len(l) < 3)
endpoint = xs_free(endpoint);
else {
xs *s = xs_fmt("%s/" "/%s", xs_list_get(l, 0), xs_list_get(l, 2));
endpoint = xs_str_wrap_i(s, endpoint, NULL);
}
}
}
if (xs_is_string(endpoint)) {
/* got it! */
headers = xs_dict_set(headers, "content-type", "application/x-www-form-urlencoded");
xs *body = xs_fmt("source=%s&target=%s", source, target);
xs *rsp = xs_http_request("POST", endpoint, headers, body, strlen(body), &status, NULL, 0, 0);
}
else
status = 0;
return status >= 200 && status <= 299;
}
#endif /* XS_IMPLEMENTATION */
#endif /* _XS_WEBMENTION_H */