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Move HTTP output code from conky.cc to display-http

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This commit is contained in:
François Revol 2018-10-05 04:47:27 +02:00
parent 17ceb82079
commit 7c8d486b9f
4 changed files with 162 additions and 116 deletions
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113
src/conky.cc
View File

@ -135,9 +135,6 @@
#elif defined(__OpenBSD__)
#include "openbsd.h"
#endif /* __OpenBSD__ */
#ifdef BUILD_HTTP
#include <microhttpd.h>
#endif /* BUILD_HTTP */
#ifdef BUILD_HSV_GRADIENT
#include "hsv_gradient.h"
@ -328,63 +325,6 @@ static conky::simple_config_setting<std::string> append_file("append_file",
true);
static FILE *append_fpointer = nullptr;
#ifdef BUILD_HTTP
#ifdef MHD_YES
/* older API */
#define MHD_Result int
#endif /* MHD_YES */
std::string webpage;
struct MHD_Daemon *httpd;
static conky::simple_config_setting<bool> http_refresh("http_refresh", false,
true);
MHD_Result sendanswer(void *cls, struct MHD_Connection *connection,
const char *url, const char *method, const char *version,
const char *upload_data, size_t *upload_data_size,
void **con_cls) {
struct MHD_Response *response = MHD_create_response_from_buffer(
webpage.length(), (void *)webpage.c_str(), MHD_RESPMEM_PERSISTENT);
MHD_Result ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
MHD_destroy_response(response);
if (cls || url || method || version || upload_data || upload_data_size ||
con_cls) {} // make compiler happy
return ret;
}
class out_to_http_setting : public conky::simple_config_setting<bool> {
typedef conky::simple_config_setting<bool> Base;
protected:
virtual void lua_setter(lua::state &l, bool init) {
lua::stack_sentry s(l, -2);
Base::lua_setter(l, init);
if (init && do_convert(l, -1).first) {
httpd = MHD_start_daemon(MHD_USE_SELECT_INTERNALLY, HTTPPORT, nullptr,
NULL, &sendanswer, nullptr, MHD_OPTION_END);
}
++s;
}
virtual void cleanup(lua::state &l) {
lua::stack_sentry s(l, -1);
if (do_convert(l, -1).first) {
MHD_stop_daemon(httpd);
httpd = nullptr;
}
l.pop();
}
public:
out_to_http_setting() : Base("out_to_http", false, false) {}
};
static out_to_http_setting out_to_http;
#endif /* BUILD_HTTP */
#ifdef BUILD_X11
static conky::simple_config_setting<bool> show_graph_scale("show_graph_scale",
@ -1125,19 +1065,6 @@ static inline void set_foreground_color(long c) {
UNUSED(c);
}
std::string string_replace_all(std::string original, const std::string &oldpart,
const std::string &newpart,
std::string::size_type start) {
std::string::size_type i = start;
int oldpartlen = oldpart.length();
while (1) {
i = original.find(oldpart, i);
if (i == std::string::npos) { break; }
original.replace(i, oldpartlen, newpart);
}
return original;
}
static void draw_string(const char *s) {
int i;
int i2;
@ -1171,16 +1098,8 @@ static void draw_string(const char *s) {
#ifdef BUILD_NCURSES
if (out_to_ncurses.get(*state) && draw_mode == FG) { printw("%s", s); }
#endif /* BUILD_NCURSES */
#ifdef BUILD_HTTP
if (out_to_http.get(*state) && draw_mode == FG) {
std::string::size_type origlen = webpage.length();
webpage.append(s);
webpage = string_replace_all(webpage, "\n", "<br />", origlen);
webpage = string_replace_all(webpage, " ", "&nbsp;&nbsp;", origlen);
webpage = string_replace_all(webpage, "&nbsp; ", "&nbsp;&nbsp;", origlen);
webpage.append("<br />");
}
#endif /* BUILD_HTTP */
if (conky::active_display_output != nullptr && draw_mode == FG)
conky::active_display_output->draw_string(s, width_of_s);
int tbs = text_buffer_size.get(*state);
memset(tmpstring1, 0, tbs);
memset(tmpstring2, 0, tbs);
@ -1738,27 +1657,8 @@ static int draw_line(char *s, int special_index) {
}
static void draw_text() {
#ifdef BUILD_HTTP
#define WEBPAGE_START1 \
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" " \
"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html " \
"xmlns=\"http://www.w3.org/1999/xhtml\"><head><meta " \
"http-equiv=\"Content-type\" content=\"text/html;charset=UTF-8\" />"
#define WEBPAGE_START2 \
"<title>Conky</title></head><body style=\"font-family: monospace\"><p>"
#define WEBPAGE_END "</p></body></html>"
if (out_to_http.get(*state)) {
webpage = WEBPAGE_START1;
if (http_refresh.get(*state)) {
webpage.append("<meta http-equiv=\"refresh\" content=\"");
std::stringstream update_interval_str;
update_interval_str << update_interval.get(*state);
webpage.append(update_interval_str.str());
webpage.append("\" />");
}
webpage.append(WEBPAGE_START2);
}
#endif /* BUILD_HTTP */
if (conky::active_display_output)
conky::active_display_output->begin_draw_text();
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
cur_y = text_start_y;
@ -1793,9 +1693,8 @@ static void draw_text() {
attron(COLOR_PAIR(COLOR_WHITE));
#endif /* BUILD_NCURSES */
for_each_line(text_buffer, draw_line);
#ifdef BUILD_HTTP
if (out_to_http.get(*state)) { webpage.append(WEBPAGE_END); }
#endif /* BUILD_HTTP */
if (conky::active_display_output)
conky::active_display_output->end_draw_text();
}
static void draw_stuff() {

146
src/display-http.cc
View File

@ -4,7 +4,11 @@
*
* Please see COPYING for details
*
* Copyright (C) 2010 Pavel Labath et al.
* Copyright (C) 2018 François Revol et al.
* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
* Copyright (c) 2005-2019 Brenden Matthews, Philip Kovacs, et. al.
* (see AUTHORS)
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -29,6 +33,10 @@
#include <sstream>
#include <unordered_map>
#ifdef BUILD_HTTP
#include <microhttpd.h>
#endif /* BUILD_HTTP */
namespace conky {
namespace {
@ -40,27 +48,147 @@ conky::disabled_display_output http_output_disabled("http", "BUILD_HTTP");
} // namespace
namespace priv {} // namespace priv
// TODO: cleanup namespace
// namespace priv {
#ifdef BUILD_HTTP
#ifdef MHD_YES
/* older API */
#define MHD_Result int
#endif /* MHD_YES */
std::string webpage;
struct MHD_Daemon *httpd;
static conky::simple_config_setting<bool> http_refresh("http_refresh", false,
true);
MHD_Result sendanswer(void *cls, struct MHD_Connection *connection,
const char *url, const char *method, const char *version,
const char *upload_data, size_t *upload_data_size,
void **con_cls) {
struct MHD_Response *response = MHD_create_response_from_buffer(
webpage.length(), (void *)webpage.c_str(), MHD_RESPMEM_PERSISTENT);
MHD_Result ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
MHD_destroy_response(response);
if (cls || url || method || version || upload_data || upload_data_size ||
con_cls) {} // make compiler happy
return ret;
}
class out_to_http_setting : public conky::simple_config_setting<bool> {
typedef conky::simple_config_setting<bool> Base;
protected:
virtual void lua_setter(lua::state &l, bool init) {
lua::stack_sentry s(l, -2);
Base::lua_setter(l, init);
if (init && do_convert(l, -1).first) {
httpd = MHD_start_daemon(MHD_USE_SELECT_INTERNALLY, HTTPPORT, nullptr,
NULL, &sendanswer, nullptr, MHD_OPTION_END);
}
++s;
}
virtual void cleanup(lua::state &l) {
lua::stack_sentry s(l, -1);
if (do_convert(l, -1).first) {
MHD_stop_daemon(httpd);
httpd = nullptr;
}
l.pop();
}
public:
out_to_http_setting() : Base("out_to_http", false, false) {}
};
static out_to_http_setting out_to_http;
std::string string_replace_all(std::string original, const std::string &oldpart,
const std::string &newpart,
std::string::size_type start) {
std::string::size_type i = start;
int oldpartlen = oldpart.length();
while (1) {
i = original.find(oldpart, i);
if (i == std::string::npos) { break; }
original.replace(i, oldpartlen, newpart);
}
return original;
}
#endif /* BUILD_HTTP */
//} // namespace priv
#ifdef BUILD_HTTP
display_output_http::display_output_http() : display_output_base("http") {
priority = 1;
httpd = NULL;
}
bool display_output_http::detect() {
/* TODO:
if (out_to_http.get(*state)) {
std::cerr << "Display output '" << name << "' enabled in config." <<
std::endl; return true;
if (/*priv::*/ out_to_http.get(*state)) {
std::cerr << "Display output '" << name << "' enabled in config."
<< std::endl;
return true;
}
*/
return false;
}
bool display_output_http::initialize() { return false; }
bool display_output_http::initialize() {
if (/*priv::*/ out_to_http.get(*state)) {
is_active = true;
return true;
}
return false;
}
bool display_output_http::shutdown() { return false; }
bool display_output_http::shutdown() { return true; }
bool display_output_http::begin_draw_text() {
#ifdef BUILD_HTTP
#define WEBPAGE_START1 \
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" " \
"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html " \
"xmlns=\"http://www.w3.org/1999/xhtml\"><head><meta " \
"http-equiv=\"Content-type\" content=\"text/html;charset=UTF-8\" />"
#define WEBPAGE_START2 \
"<title>Conky</title></head><body style=\"font-family: monospace\"><p>"
#define WEBPAGE_END "</p></body></html>"
if (out_to_http.get(*state)) {
webpage = WEBPAGE_START1;
if (http_refresh.get(*state)) {
webpage.append("<meta http-equiv=\"refresh\" content=\"");
std::stringstream update_interval_str;
update_interval_str << update_interval.get(*state);
webpage.append(update_interval_str.str());
webpage.append("\" />");
}
webpage.append(WEBPAGE_START2);
}
#endif /* BUILD_HTTP */
return true;
}
bool display_output_http::end_draw_text() {
webpage.append(WEBPAGE_END);
return true;
}
bool display_output_http::draw_string(const char *s, int w) {
std::string::size_type origlen = webpage.length();
webpage.append(s);
webpage = string_replace_all(webpage, "\n", "<br />", origlen);
webpage = string_replace_all(webpage, " ", "&nbsp;&nbsp;", origlen);
webpage = string_replace_all(webpage, "&nbsp; ", "&nbsp;&nbsp;", origlen);
webpage.append("<br />");
return true;
}
#endif

8
src/display-http.hh
View File

@ -47,7 +47,15 @@ class display_output_http : public display_output_base {
virtual bool initialize();
virtual bool shutdown();
// drawing primitives
virtual bool begin_draw_text();
virtual bool end_draw_text();
virtual bool draw_string(const char *s, int w);
// HTTP-specific
private:
// std::string webpage;
// struct MHD_Daemon *httpd;
};
} // namespace conky

11
src/display-output.hh
View File

@ -72,6 +72,11 @@ class display_output_base {
virtual bool initialize() { return false; };
virtual bool shutdown() { return false; };
// drawing primitives
virtual bool begin_draw_text() { return false; };
virtual bool end_draw_text() { return false; };
virtual bool draw_string(const char *s, int w) { return false; };
friend bool conky::initialize_display_outputs();
friend bool conky::shutdown_display_outputs();
@ -79,6 +84,12 @@ class display_output_base {
virtual bool active() { return is_active; };
};
/*
* The selected and active display output.
* XXX: do we want to support multiple outputs???
*/
extern display_output_base *active_display_output;
/*
* Use this to declare a display output that has been disabled during
* compilation. We can then print a nice error message telling the used which