2005-01-12 17:37:31 +00:00
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/* $Id$ */
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/***
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This file is part of polypaudio.
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polypaudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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polypaudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with polypaudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <assert.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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2006-02-17 12:10:58 +00:00
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#include <polypcore/ioline.h>
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#include <polypcore/xmalloc.h>
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#include <polypcore/log.h>
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#include <polypcore/namereg.h>
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#include <polypcore/cli-text.h>
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2005-01-12 17:37:31 +00:00
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#include "protocol-http.h"
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/* Don't allow more than this many concurrent connections */
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#define MAX_CONNECTIONS 10
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#define internal_server_error(c) http_message((c), 500, "Internal Server Error", NULL)
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#define URL_ROOT "/"
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2005-01-12 18:51:38 +00:00
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#define URL_CSS "/style"
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#define URL_STATUS "/status"
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2005-01-12 17:37:31 +00:00
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struct connection {
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2006-01-11 01:17:39 +00:00
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pa_protocol_http *protocol;
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pa_ioline *line;
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2005-01-12 17:37:31 +00:00
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enum { REQUEST_LINE, MIME_HEADER, DATA } state;
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char *url;
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};
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struct pa_protocol_http {
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2006-01-11 01:17:39 +00:00
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pa_module *module;
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pa_core *core;
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pa_socket_server*server;
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pa_idxset *connections;
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2005-01-12 17:37:31 +00:00
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};
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static void http_response(struct connection *c, int code, const char *msg, const char *mime) {
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char s[256];
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assert(c);
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assert(msg);
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assert(mime);
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snprintf(s, sizeof(s),
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"HTTP/1.0 %i %s\n"
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"Connection: close\n"
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"Content-Type: %s\n"
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2005-01-12 18:51:38 +00:00
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"Cache-Control: no-cache\n"
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"Expires: 0\n"
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"Server: "PACKAGE_NAME"/"PACKAGE_VERSION"\n"
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2005-01-12 17:37:31 +00:00
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"\n", code, msg, mime);
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pa_ioline_puts(c->line, s);
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}
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static void http_message(struct connection *c, int code, const char *msg, const char *text) {
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char s[256];
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assert(c);
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http_response(c, code, msg, "text/html");
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if (!text)
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text = msg;
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2005-01-12 18:51:38 +00:00
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snprintf(s, sizeof(s),
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"<?xml version=\"1.0\"?>\n"
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"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n"
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"<html xmlns=\"http://www.w3.org/1999/xhtml\"><head><title>%s</title></head>\n"
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2005-01-12 17:37:31 +00:00
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"<body>%s</body></html>\n",
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text, text);
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pa_ioline_puts(c->line, s);
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pa_ioline_defer_close(c->line);
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}
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static void connection_free(struct connection *c, int del) {
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assert(c);
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if (c->url)
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pa_xfree(c->url);
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if (del)
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pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
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pa_ioline_unref(c->line);
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pa_xfree(c);
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}
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2006-01-11 01:17:39 +00:00
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static void line_callback(pa_ioline *line, const char *s, void *userdata) {
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2005-01-12 17:37:31 +00:00
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struct connection *c = userdata;
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assert(line);
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assert(c);
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if (!s) {
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/* EOF */
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connection_free(c, 1);
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return;
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}
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switch (c->state) {
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case REQUEST_LINE: {
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if (memcmp(s, "GET ", 4))
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goto fail;
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s +=4;
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2005-01-12 18:51:38 +00:00
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c->url = pa_xstrndup(s, strcspn(s, " \r\n\t?"));
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2005-01-12 17:37:31 +00:00
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c->state = MIME_HEADER;
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break;
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}
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case MIME_HEADER: {
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/* Ignore MIME headers */
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if (strcspn(s, " \r\n") != 0)
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break;
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/* We're done */
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c->state = DATA;
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2005-01-12 18:51:38 +00:00
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pa_log_info(__FILE__": request for %s\n", c->url);
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2005-01-12 17:37:31 +00:00
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if (!strcmp(c->url, URL_ROOT)) {
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char txt[256];
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http_response(c, 200, "OK", "text/html");
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pa_ioline_puts(c->line,
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2005-01-12 18:51:38 +00:00
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"<?xml version=\"1.0\"?>\n"
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"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n"
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"<html xmlns=\"http://www.w3.org/1999/xhtml\"><title>"PACKAGE_NAME" "PACKAGE_VERSION"</title>\n"
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"<link rel=\"stylesheet\" type=\"text/css\" href=\"style\"/></head><body>\n");
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2005-01-12 17:37:31 +00:00
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pa_ioline_puts(c->line,
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"<h1>"PACKAGE_NAME" "PACKAGE_VERSION"</h1>\n"
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"<table>");
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#define PRINTF_FIELD(a,b) pa_ioline_printf(c->line, "<tr><td><b>%s</b></td><td>%s</td></tr>\n",(a),(b))
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PRINTF_FIELD("User Name:", pa_get_user_name(txt, sizeof(txt)));
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PRINTF_FIELD("Fully Qualified Domain Name:", pa_get_fqdn(txt, sizeof(txt)));
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PRINTF_FIELD("Default Sample Specification:", pa_sample_spec_snprint(txt, sizeof(txt), &c->protocol->core->default_sample_spec));
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PRINTF_FIELD("Default Sink:", pa_namereg_get_default_sink_name(c->protocol->core));
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PRINTF_FIELD("Default Source:", pa_namereg_get_default_source_name(c->protocol->core));
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2005-01-12 18:51:38 +00:00
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2005-01-12 17:37:31 +00:00
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pa_ioline_puts(c->line, "</table>");
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2005-01-12 18:51:38 +00:00
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pa_ioline_puts(c->line, "<p><a href=\"/status\">Click here</a> for an extensive server status report.</p>");
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2005-01-12 17:37:31 +00:00
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pa_ioline_puts(c->line, "</body></html>\n");
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pa_ioline_defer_close(c->line);
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} else if (!strcmp(c->url, URL_CSS)) {
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http_response(c, 200, "OK", "text/css");
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pa_ioline_puts(c->line,
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"body { color: black; background-color: white; margin: 0.5cm; }\n"
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"a:link, a:visited { color: #900000; }\n"
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"p { margin-left: 0.5cm; margin-right: 0.5cm; }\n"
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"h1 { color: #00009F; }\n"
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"h2 { color: #00009F; }\n"
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"ul { margin-left: .5cm; }\n"
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"ol { margin-left: .5cm; }\n"
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"pre { margin-left: .5cm; background-color: #f0f0f0; padding: 0.4cm;}\n"
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".grey { color: #afafaf; }\n"
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"table { margin-left: 1cm; border:1px solid lightgrey; padding: 0.2cm; }\n"
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"td { padding-left:10px; padding-right:10px; }\n");
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2005-01-12 18:51:38 +00:00
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pa_ioline_defer_close(c->line);
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} else if (!strcmp(c->url, URL_STATUS)) {
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2006-01-11 01:17:39 +00:00
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char *r;
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2005-01-12 18:51:38 +00:00
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http_response(c, 200, "OK", "text/plain");
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2006-01-11 01:17:39 +00:00
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r = pa_full_status_string(c->protocol->core);
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pa_ioline_puts(c->line, r);
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pa_xfree(r);
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2005-01-12 18:51:38 +00:00
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pa_ioline_defer_close(c->line);
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2005-01-12 17:37:31 +00:00
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} else
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http_message(c, 404, "Not Found", NULL);
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break;
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}
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default:
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;
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}
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return;
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fail:
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internal_server_error(c);
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}
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2006-01-11 01:17:39 +00:00
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static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata) {
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pa_protocol_http *p = userdata;
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2005-01-12 17:37:31 +00:00
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struct connection *c;
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assert(s && io && p);
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2006-01-11 01:17:39 +00:00
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if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
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2005-01-12 18:51:38 +00:00
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pa_log_warn(__FILE__": Warning! Too many connections (%u), dropping incoming connection.\n", MAX_CONNECTIONS);
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2005-01-12 17:37:31 +00:00
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pa_iochannel_free(io);
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return;
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}
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c = pa_xmalloc(sizeof(struct connection));
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c->protocol = p;
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c->line = pa_ioline_new(io);
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c->state = REQUEST_LINE;
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c->url = NULL;
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pa_ioline_set_callback(c->line, line_callback, c);
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pa_idxset_put(p->connections, c, NULL);
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}
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2006-01-11 01:17:39 +00:00
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pa_protocol_http* pa_protocol_http_new(pa_core *core, pa_socket_server *server, pa_module *m, PA_GCC_UNUSED pa_modargs *ma) {
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pa_protocol_http* p;
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2005-01-12 17:37:31 +00:00
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assert(core && server);
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2006-01-11 01:17:39 +00:00
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p = pa_xmalloc(sizeof(pa_protocol_http));
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2005-01-12 17:37:31 +00:00
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p->module = m;
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p->core = core;
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p->server = server;
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p->connections = pa_idxset_new(NULL, NULL);
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pa_socket_server_set_callback(p->server, on_connection, p);
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return p;
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}
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2006-01-11 01:17:39 +00:00
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static void free_connection(void *p, PA_GCC_UNUSED void *userdata) {
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2005-01-12 17:37:31 +00:00
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assert(p);
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connection_free(p, 0);
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}
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2006-01-11 01:17:39 +00:00
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void pa_protocol_http_free(pa_protocol_http *p) {
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2005-01-12 17:37:31 +00:00
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assert(p);
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pa_idxset_free(p->connections, free_connection, NULL);
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pa_socket_server_unref(p->server);
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pa_xfree(p);
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}
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