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Commit | Line | Data |
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fd4848e4 | 1 | <?php |
c06c1713 | 2 | include "../inc/common.php"; |
fd4848e4 | 3 | |
9c9d2cdf BM |
4 | if(session_status() !== PHP_SESSION_ACTIVE) session_start(); |
5 | ||
fd4848e4 BM |
6 | if (!isset($_SESSION['id'])) |
7 | die("Access denied"); | |
8 | ||
9 | // Close the session now, otherwise other pages block | |
10 | session_write_close(); | |
11 | ||
65b63bbe BM |
12 | // Apache w/FPM is shit because it doesn't have flushpackets=on |
13 | // or not by default anyway, so we will fill up 4k buffers. | |
14 | // Yeah, really silly... I know. | |
15 | $fpm_workaround_needed = false; | |
16 | if (str_contains($_SERVER['SERVER_SOFTWARE'], 'Apache') && | |
17 | function_exists('fpm_get_status') && | |
18 | is_array(fpm_get_status())) | |
19 | { | |
20 | $fpm_workaround_needed = true; | |
21 | } | |
22 | ||
fd4848e4 | 23 | // Only now make the connection (this can take a short while) |
c06c1713 | 24 | include "../inc/connection.php"; |
fd4848e4 | 25 | |
6745a128 | 26 | header("Content-type: application/json; charset=utf-8"); |
fd4848e4 | 27 | // Server Side Events |
63026197 BM |
28 | if (!defined('NO_EVENT_STREAM_HEADER')) |
29 | header('Content-Type: text/event-stream'); | |
fd4848e4 BM |
30 | |
31 | // Explicitly disable caching so Varnish and other upstreams won't cache. | |
32 | header("Cache-Control: no-cache, must-revalidate"); | |
33 | ||
34 | // Setting this header instructs Nginx to disable fastcgi_buffering and disable | |
35 | // gzip for this request. | |
36 | header('X-Accel-Buffering: no'); | |
37 | ||
38 | // No time limit | |
39 | set_time_limit(0); | |
40 | ||
41 | // Send content immediately | |
42 | ob_implicit_flush(1); | |
43 | ||
f9558c92 | 44 | // Flush and stop output buffering (eg fastcgi w/NGINX) |
65b63bbe | 45 | function flush_completely() |
3c5d6298 | 46 | { |
65b63bbe | 47 | while (1) |
3c5d6298 | 48 | { |
65b63bbe BM |
49 | try { |
50 | $ret = @ob_end_flush(); | |
51 | if ($ret === false) | |
52 | break; | |
53 | } catch(Exception $e) | |
54 | { | |
55 | break; | |
56 | } | |
3c5d6298 | 57 | } |
65b63bbe BM |
58 | } |
59 | ||
04e01469 VP |
60 | if (!defined('NO_EVENT_STREAM_HEADER')) |
61 | flush_completely(); | |
fd4848e4 BM |
62 | |
63 | /* Send server-sent events (SSE) message */ | |
64 | function send_sse($json) | |
65 | { | |
65b63bbe BM |
66 | GLOBAL $fpm_workaround_needed; |
67 | $str = "data: ".json_encode($json)."\n\n"; | |
68 | if ($fpm_workaround_needed) | |
69 | $str .= str_repeat(" ", 4096 - ((strlen($str)+1) % 4096))."\n"; | |
70 | echo $str; | |
fd4848e4 BM |
71 | } |
72 | ||
73 | function api_log_loop($sources) | |
74 | { | |
75 | GLOBAL $rpc; | |
65b63bbe | 76 | GLOBAL $fpm_workaround_needed; |
fd4848e4 BM |
77 | |
78 | $rpc->log()->subscribe($sources); | |
79 | if ($rpc->error) | |
80 | { | |
81 | echo $rpc->error; | |
82 | die; | |
83 | } | |
84 | ||
85 | for(;;) | |
86 | { | |
87 | $res = $rpc->eventloop(); | |
88 | if (!$res) | |
0a2b3443 BM |
89 | { |
90 | /* Output at least something every timeout (10) seconds, | |
91 | * otherwise PHP may not | |
92 | * notice when the webclient is gone. | |
93 | */ | |
65b63bbe BM |
94 | if ($fpm_workaround_needed) |
95 | echo str_repeat(" ", 4095)."\n"; | |
96 | else | |
97 | echo "\n"; | |
fd4848e4 | 98 | continue; |
0a2b3443 | 99 | } |
fd4848e4 BM |
100 | send_sse($res); |
101 | } | |
102 | } | |
103 | ||
104 | function api_timer_loop(int $every_msec, string $method, array|null $params = null) | |
105 | { | |
106 | GLOBAL $rpc; | |
107 | ||
c16c239b BM |
108 | /* First, execute it immediately */ |
109 | $res = $rpc->query($method, $params); | |
110 | if (!$res) | |
111 | die; | |
112 | send_sse($res); | |
fd4848e4 BM |
113 | $rpc->rpc()->add_timer("timer", $every_msec, $method, $params); |
114 | if ($rpc->error) | |
115 | { | |
69e00a0c BM |
116 | /* Have to resort to old style: client-side timer */ |
117 | while(1) | |
118 | { | |
119 | $res = $rpc->query($method, $params); | |
120 | if (!$res) | |
121 | die; | |
122 | send_sse($res); | |
563ebce7 | 123 | usleep($every_msec * 1000); |
69e00a0c | 124 | } |
fd4848e4 BM |
125 | } |
126 | ||
69e00a0c | 127 | /* New style: use server-side timers */ |
c16c239b BM |
128 | /* - First, execute it immediately */ |
129 | $res = $rpc->query($method, $params); | |
130 | if (!$res) | |
131 | die; | |
132 | send_sse($res); | |
133 | /* - Then add the timer */ | |
fd4848e4 BM |
134 | for(;;) |
135 | { | |
136 | $res = $rpc->eventloop(); | |
137 | if (!$res) | |
0a2b3443 BM |
138 | { |
139 | /* Output at least something every timeout (10) seconds, | |
140 | * otherwise PHP may not | |
141 | * notice when the webclient is gone. | |
142 | */ | |
65b63bbe BM |
143 | if ($fpm_workaround_needed) |
144 | echo str_repeat(" ", 4095)."\n"; | |
145 | else | |
146 | echo "\n"; | |
fd4848e4 | 147 | continue; |
0a2b3443 | 148 | } |
fd4848e4 BM |
149 | send_sse($res); |
150 | } | |
151 | } |