Commit | Line | Data |
---|---|---|
bca4e2b7 RK |
1 | /* |
2 | * This file is part of DisOrder. | |
3 | * Copyright (C) 2004-2008 Richard Kettlewell | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "types.h" | |
23 | ||
71634563 RK |
24 | #include <string.h> |
25 | #include <stdio.h> | |
26 | #include <errno.h> | |
27 | #include <time.h> | |
28 | #include <ctype.h> | |
29 | #include <stddef.h> | |
30 | ||
31 | #include "hash.h" | |
32 | #include "table.h" | |
33 | #include "client.h" | |
34 | #include "rights.h" | |
35 | #include "mem.h" | |
36 | #include "sink.h" | |
37 | #include "vector.h" | |
38 | #include "printf.h" | |
448d3570 | 39 | #include "actions.h" |
71634563 RK |
40 | #include "lookup.h" |
41 | #include "url.h" | |
42 | #include "configuration.h" | |
43 | #include "cgi.h" | |
44 | #include "log.h" | |
45 | #include "queue.h" | |
46 | #include "macros.h" | |
47 | #include "macros-disorder.h" | |
448d3570 | 48 | |
bca4e2b7 RK |
49 | /** @brief Login cookie */ |
50 | char *login_cookie; | |
51 | ||
5a7df048 RK |
52 | /** @brief Return a Cookie: header */ |
53 | static char *cookie(void) { | |
54 | struct dynstr d[1]; | |
55 | struct url u; | |
56 | char *s; | |
57 | ||
58 | memset(&u, 0, sizeof u); | |
59 | dynstr_init(d); | |
60 | parse_url(config->url, &u); | |
61 | if(login_cookie) { | |
62 | dynstr_append_string(d, "disorder="); | |
63 | dynstr_append_string(d, login_cookie); | |
64 | } else { | |
65 | /* Force browser to discard cookie */ | |
66 | dynstr_append_string(d, "disorder=none;Max-Age=0"); | |
67 | } | |
68 | if(u.path) { | |
69 | /* The default domain matches the request host, so we need not override | |
70 | * that. But the default path only goes up to the rightmost /, which would | |
71 | * cause the browser to expose the cookie to other CGI programs on the same | |
72 | * web server. */ | |
73 | dynstr_append_string(d, ";Version=1;Path="); | |
74 | /* Formally we are supposed to quote the path, since it invariably has a | |
75 | * slash in it. However Safari does not parse quoted paths correctly, so | |
76 | * this won't work. Fortunately nothing else seems to care about proper | |
77 | * quoting of paths, so in practice we get with it. (See also | |
78 | * parse_cookie() where we are liberal about cookie paths on the way back | |
79 | * in.) */ | |
80 | dynstr_append_string(d, u.path); | |
81 | } | |
82 | dynstr_terminate(d); | |
83 | byte_xasprintf(&s, "Set-Cookie: %s", d->vec); | |
84 | return s; | |
85 | } | |
86 | ||
87 | /** @brief Redirect to some other action or URL */ | |
88 | static void redirect(const char *url) { | |
89 | /* By default use the 'back' argument */ | |
90 | if(!url) | |
71634563 | 91 | url = cgi_get("back"); |
5a7df048 RK |
92 | if(url) { |
93 | if(!strncmp(url, "http", 4)) | |
94 | /* If the target is not a full URL assume it's the action */ | |
95 | url = cgi_makeurl(config->url, "action", url, (char *)0); | |
96 | } else { | |
97 | /* If back= is not set just go back to the front page */ | |
98 | url = config->url; | |
99 | } | |
100 | if(printf("Location: %s\n" | |
101 | "%s\n" | |
102 | "\n", url, cookie()) < 0) | |
103 | fatal(errno, "error writing to stdout"); | |
104 | } | |
105 | ||
448d3570 RK |
106 | /* 'playing' and 'manage' just add a Refresh: header */ |
107 | static void act_playing(void) { | |
108 | long refresh = config->refresh; | |
109 | long length; | |
110 | time_t now, fin; | |
111 | char *url; | |
71634563 | 112 | const char *action; |
448d3570 | 113 | |
71634563 | 114 | lookup(DC_PLAYING|DC_QUEUE|DC_ENABLED|DC_RANDOM_ENABLED); |
448d3570 RK |
115 | if(playing |
116 | && playing->state == playing_started /* i.e. not paused */ | |
117 | && !disorder_length(client, playing->track, &length) | |
118 | && length | |
119 | && playing->sofar >= 0) { | |
120 | /* Try to put the next refresh at the start of the next track. */ | |
121 | time(&now); | |
122 | fin = now + length - playing->sofar + config->gap; | |
123 | if(now + refresh > fin) | |
124 | refresh = fin - now; | |
125 | } | |
126 | if(queue && queue->state == playing_isscratch) { | |
127 | /* next track is a scratch, don't leave more than the inter-track gap */ | |
128 | if(refresh > config->gap) | |
129 | refresh = config->gap; | |
130 | } | |
131 | if(!playing | |
132 | && ((queue | |
133 | && queue->state != playing_random) | |
134 | || random_enabled) | |
135 | && enabled) { | |
136 | /* no track playing but playing is enabled and there is something coming | |
137 | * up, must be in a gap */ | |
138 | if(refresh > config->gap) | |
139 | refresh = config->gap; | |
140 | } | |
141 | if((action = cgi_get("action"))) | |
142 | url = cgi_makeurl(config->url, "action", action, (char *)0); | |
143 | else | |
144 | url = config->url; | |
145 | if(printf("Content-Type: text/html\n" | |
146 | "Refresh: %ld;url=%s\n" | |
5a7df048 | 147 | "%s\n" |
448d3570 | 148 | "\n", |
5a7df048 | 149 | refresh, url, cookie()) < 0) |
448d3570 RK |
150 | fatal(errno, "error writing to stdout"); |
151 | disorder_cgi_expand(action ? action : "playing"); | |
152 | } | |
153 | ||
bca4e2b7 RK |
154 | /** @brief Table of actions */ |
155 | static const struct action { | |
156 | /** @brief Action name */ | |
157 | const char *name; | |
158 | /** @brief Action handler */ | |
159 | void (*handler)(void); | |
160 | } actions[] = { | |
04024c2c | 161 | #if 0 |
bca4e2b7 RK |
162 | { "confirm", act_confirm }, |
163 | { "disable", act_disable }, | |
164 | { "edituser", act_edituser }, | |
165 | { "enable", act_enable }, | |
166 | { "login", act_login }, | |
167 | { "logout", act_logout }, | |
448d3570 | 168 | { "manage", act_playing }, |
bca4e2b7 RK |
169 | { "move", act_move }, |
170 | { "pause", act_pause }, | |
171 | { "play", act_play }, | |
04024c2c | 172 | #endif |
bca4e2b7 | 173 | { "playing", act_playing }, |
04024c2c | 174 | #if 0 |
bca4e2b7 RK |
175 | { "prefs", act_prefs }, |
176 | { "random-disable", act_random_disable }, | |
177 | { "random-enable", act_random_enable }, | |
178 | { "register", act_register }, | |
179 | { "reminder", act_reminder }, | |
180 | { "remove", act_remove }, | |
181 | { "resume", act_resume }, | |
182 | { "scratch", act_scratch }, | |
183 | { "volume", act_volume }, | |
04024c2c | 184 | #endif |
bca4e2b7 RK |
185 | }; |
186 | ||
187 | /** @brief Expand a template | |
188 | * @param name Base name of template, or NULL to consult CGI args | |
189 | */ | |
190 | void disorder_cgi_expand(const char *name) { | |
191 | const char *p; | |
192 | ||
193 | /* For unknown actions check that they aren't evil */ | |
194 | for(p = name; *p && isalnum((unsigned char)*p); ++p) | |
195 | ; | |
196 | if(*p) | |
71634563 RK |
197 | fatal(0, "invalid action name '%s'", name); |
198 | byte_xasprintf((char **)&p, "%s.tmpl", name); | |
199 | if(mx_expand_file(p, sink_stdio("stdout", stdout), 0) == -1 | |
bca4e2b7 RK |
200 | || fflush(stdout) < 0) |
201 | fatal(errno, "error writing to stdout"); | |
202 | } | |
203 | ||
204 | /** @brief Execute a web action | |
205 | * @param action Action to perform, or NULL to consult CGI args | |
206 | * | |
207 | * If no recognized action is specified then 'playing' is assumed. | |
208 | */ | |
209 | void disorder_cgi_action(const char *action) { | |
210 | int n; | |
bca4e2b7 RK |
211 | |
212 | /* Consult CGI args if caller had no view */ | |
213 | if(!action) | |
214 | action = cgi_get("action"); | |
215 | /* Pick a default if nobody cares at all */ | |
216 | if(!action) { | |
217 | /* We allow URLs which are just c=... in order to keep confirmation URLs, | |
218 | * which are user-facing, as short as possible. Actually we could lose the | |
219 | * c= for this... */ | |
220 | if(cgi_get("c")) | |
221 | action = "confirm"; | |
222 | else | |
223 | action = "playing"; | |
5a7df048 RK |
224 | /* Make sure 'action' is always set */ |
225 | cgi_set("action", action); | |
bca4e2b7 RK |
226 | } |
227 | if((n = TABLE_FIND(actions, struct action, name, action)) >= 0) | |
228 | /* Its a known action */ | |
229 | actions[n].handler(); | |
448d3570 | 230 | else { |
bca4e2b7 | 231 | /* Just expand the template */ |
448d3570 | 232 | if(printf("Content-Type: text/html\n" |
5a7df048 RK |
233 | "%s\n" |
234 | "\n", cookie()) < 0) | |
448d3570 | 235 | fatal(errno, "error writing to stdout"); |
bca4e2b7 | 236 | disorder_cgi_expand(action); |
448d3570 | 237 | } |
bca4e2b7 RK |
238 | } |
239 | ||
240 | /** @brief Generate an error page */ | |
241 | void disorder_cgi_error(const char *msg, ...) { | |
242 | va_list ap; | |
243 | ||
244 | va_start(ap, msg); | |
245 | byte_xvasprintf(&error_string, msg, ap); | |
246 | va_end(ap); | |
247 | disorder_cgi_expand("error"); | |
248 | } | |
249 | ||
250 | /** @brief Log in as the current user or guest if none */ | |
71634563 | 251 | void disorder_cgi_login(void) { |
bca4e2b7 | 252 | /* Junk old data */ |
71634563 | 253 | lookup_reset(); |
bca4e2b7 RK |
254 | /* Reconnect */ |
255 | if(disorder_connect_cookie(client, login_cookie)) { | |
256 | disorder_cgi_error("Cannot connect to server"); | |
257 | exit(0); | |
258 | } | |
259 | /* If there was a cookie but it went bad, we forget it */ | |
71634563 | 260 | if(login_cookie && !strcmp(disorder_user(client), "guest")) |
bca4e2b7 RK |
261 | login_cookie = 0; |
262 | } | |
263 | ||
264 | /* | |
265 | Local Variables: | |
266 | c-basic-offset:2 | |
267 | comment-column:40 | |
268 | fill-column:79 | |
269 | indent-tabs-mode:nil | |
270 | End: | |
271 | */ |