[270] | 1 | /*
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| 2 | * TOPPERS ECHONET Lite Communication Middleware
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| 3 | *
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| 4 | * Copyright (C) 2015 Cores Co., Ltd. Japan
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| 5 | *
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| 6 | * ä¸è¨èä½æ¨©è
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| 7 | ã¯ï¼ä»¥ä¸ã®(1)ï½(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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| 8 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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| 9 | * å¤ã»åé
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| 10 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 11 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 12 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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| 13 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 14 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 15 | * ç¨ã§ããå½¢ã§åé
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| 16 | å¸ããå ´åã«ã¯ï¼åé
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| 17 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 18 | * è
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| 19 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 20 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 21 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 22 | * ç¨ã§ããªãå½¢ã§åé
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| 23 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 24 | * ã¨ï¼
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| 25 | * (a) åé
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| 26 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 27 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 28 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 29 | * (b) åé
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| 30 | å¸ã®å½¢æ
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| 31 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 32 | * å ±åãããã¨ï¼
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| 33 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 34 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 35 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 36 | 責ãããã¨ï¼
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| 37 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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| 38 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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| 39 | ããã³TOPPERSããã¸ã§ã¯ãã
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| 40 | * å
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| 41 | 責ãããã¨ï¼
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| 42 | *
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| 43 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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[279] | 44 | ã
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[270] | 45 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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| 46 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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| 47 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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| 48 | * ã®è²¬ä»»ãè² ããªãï¼
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| 49 | *
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| 50 | * @(#) $Id: websocket.c 279 2017-04-29 07:33:37Z coas-nagasima $
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| 51 | */
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| 52 |
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| 53 | #include <string.h>
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| 54 | #include "websocket.h"
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| 55 | #include "kernel.h"
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[279] | 56 | #include "kernel_cfg.h"
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[270] | 57 | #include "syssvc/syslog.h"
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| 58 |
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| 59 | static WS_FBS_ID cur_out_msg;
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| 60 |
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[279] | 61 | void websocket_init(struct websocket *ws, ID wbsid)
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[270] | 62 | {
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| 63 | memset(ws, 0, sizeof(*ws));
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| 64 | ws->wbsid = wbsid;
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| 65 | }
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| 66 |
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| 67 | void websocket_destroy(struct websocket *ws)
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| 68 | {
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| 69 | if ((cur_out_msg.ptr != NULL) && (((ID *)cur_out_msg.ptr->_gap)[0] == ws->wbsid))
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| 70 | {
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| 71 | _ws_fbs_del(cur_out_msg);
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| 72 | memset(&cur_out_msg, 0, sizeof(cur_out_msg));
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| 73 | }
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| 74 |
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| 75 | if (ws->cur_in_msg.ptr != NULL) {
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| 76 | _ws_fbs_del(ws->cur_in_msg);
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| 77 | memset(&ws->cur_in_msg, 0, sizeof(ws->cur_in_msg));
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| 78 | }
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| 79 |
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| 80 | ws->wbsid = 0;
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| 81 | }
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| 82 |
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| 83 | int websocket_input(struct websocket *ws, const void *data, int len)
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| 84 | {
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| 85 | ws_state_t *s = &ws->rstate;
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| 86 | const uint8_t *pos = (const uint8_t *)data, *end = &((const uint8_t *)data)[len];
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| 87 |
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| 88 | for(; pos < end; pos++){
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| 89 | switch (s->state)
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| 90 | {
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| 91 | // FIN RSV1-3 OPECODE
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| 92 | case 0:
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| 93 | s->fin = (*pos & 0x80) != 0;
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| 94 | s->opecode = (enum opecode_t)(*pos & 0x0F);
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| 95 | s->state = 1;
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| 96 | break;
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| 97 | // MASK Payload len
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| 98 | case 1:
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| 99 | // MASK=0ã¯NG
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| 100 | if((*pos & 0x80) == 0)
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| 101 | return -1/*MASK_ERROR*/;
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| 102 |
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| 103 | switch(*pos & 0x7F){
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| 104 | case 127:
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| 105 | s->payload_len = 0;
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| 106 | s->state = 2/*7+64bit*/;
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| 107 | break;
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| 108 | case 126:
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| 109 | s->payload_len = 0;
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| 110 | s->state = 8/*7+16bit*/;
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| 111 | break;
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| 112 | default:
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| 113 | s->payload_len = *pos & 0x7F;
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| 114 | s->state = 10/*7bit*/;
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| 115 | break;
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| 116 | }
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| 117 | break;
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| 118 | // 64bit Extended payload length
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| 119 | case 2: case 3: case 4: case 5: case 6: case 7:
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| 120 | // 16bit Extended payload length
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| 121 | case 8: case 9:
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| 122 | s->payload_len = (s->payload_len << 8) + *pos;
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[279] | 123 | s->state++;
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[270] | 124 | break;
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| 125 | // Masking-key
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| 126 | case 10: case 11: case 12:
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| 127 | s->masking_key[s->state - 10] = *pos;
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| 128 | s->state++;
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| 129 | break;
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[279] | 130 | case 13:
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[270] | 131 | s->masking_key[3] = *pos;
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| 132 |
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| 133 | s->data_pos = 0;
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| 134 | if (s->payload_len <= 0) {
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| 135 | s->state = 0;
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| 136 | }
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| 137 | else {
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| 138 | _ws_fbs_cre(1, &ws->cur_in_msg);
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[279] | 139 | s->state++;
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[270] | 140 | }
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[279] | 141 | break;
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| 142 | // Payload buffer
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[270] | 143 | default:
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| 144 | if(ws->cur_in_msg.ptr != NULL)
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| 145 | _ws_fbs_poke(ws->cur_in_msg, s->data_pos, *pos ^ s->masking_key[s->data_pos % 4]);
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| 146 |
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| 147 | s->data_pos++;
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| 148 | if (s->data_pos >= s->payload_len) {
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| 149 | ER ret;
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| 150 | s->state = 0;
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| 151 |
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| 152 | if (ws->cur_in_msg.ptr != NULL) {
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| 153 | ((ID *)ws->cur_in_msg.ptr->_gap)[0] = ws->wbsid;
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| 154 | ret = psnd_dtq(ws_api_mailboxid, (intptr_t)ws->cur_in_msg.ptr);
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| 155 | if (ret != E_OK) {
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| 156 | syslog(LOG_WARNING, "websocket_input() : psnd_dtq(%d) result = %d", ws_api_mailboxid, ret);
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| 157 | _ws_fbs_del(ws->cur_in_msg);
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| 158 | }
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[279] | 159 | }
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[270] | 160 | memset(&ws->cur_in_msg, 0, sizeof(ws->cur_in_msg));
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| 161 | }
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| 162 | break;
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| 163 | }
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| 164 | }
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| 165 |
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| 166 | return 0;
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| 167 | }
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| 168 |
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| 169 | bool_t websocket_newdata(struct websocket *ws)
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| 170 | {
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| 171 | ws_state_t *s = &ws->wstate;
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| 172 | struct websocket *mws;
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| 173 | ER ret;
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| 174 | WS_FBS_ID data;
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| 175 | ID wbsid;
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| 176 |
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| 177 | if(s->state != 0)
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| 178 | return true;
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| 179 |
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| 180 | if (cur_out_msg.ptr != NULL)
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| 181 | return (((ID *)cur_out_msg.ptr->_gap)[0] == ws->wbsid);
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| 182 |
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[279] | 183 | for (;;) {
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[270] | 184 | ret = prcv_dtq(WEBSOCKET_MBXID, (intptr_t *)&data.ptr);
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| 185 | if (ret == E_TMOUT)
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| 186 | return false;
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| 187 |
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| 188 | if (ret != E_OK) {
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| 189 | TOPPERS_assert_abort();
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| 190 | return false;
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| 191 | }
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| 192 |
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| 193 | wbsid = ((ID *)data.ptr->_gap)[0];
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| 194 | mws = websocket_getws(wbsid);
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| 195 | if ((mws != NULL) && (mws->wbsid != 0))
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| 196 | break;
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| 197 |
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| 198 | _ws_fbs_del(cur_out_msg);
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| 199 | }
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| 200 |
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| 201 | cur_out_msg.ptr = data.ptr;
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| 202 |
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| 203 | return (wbsid == ws->wbsid);
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[279] | 204 | }
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[270] | 205 |
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| 206 | int websocket_output(struct websocket *ws, void *data, int len)
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| 207 | {
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| 208 | ws_state_t *s = &ws->wstate;
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| 209 | uint8_t *pos = (uint8_t *)data, *end = &((uint8_t *)data)[len];
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| 210 |
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| 211 | for(; pos < end; pos++){
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| 212 | switch (s->state)
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| 213 | {
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| 214 | // FIN RSV1-3 OPECODE
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| 215 | case 0:
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| 216 | if ((cur_out_msg.ptr == NULL) || (((ID *)cur_out_msg.ptr->_gap)[0] != ws->wbsid))
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| 217 | return (intptr_t)pos - (intptr_t)data;
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| 218 |
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| 219 | s->payload_len = _ws_fbs_get_datalen(cur_out_msg);
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| 220 | if(s->payload_len == 0){
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| 221 | goto next;
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| 222 | }
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| 223 |
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| 224 | s->fin = 1;
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| 225 | s->opecode = text_frame;
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| 226 | s->masked = 0;//
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| 227 | s->masking_key[0] = 0;//0x01;
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| 228 | s->masking_key[1] = 0;//0x23;
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| 229 | s->masking_key[2] = 0;//0x45;
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| 230 | s->masking_key[3] = 0;//0x67;
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| 231 |
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| 232 | *pos = ((s->fin != 0) ? 0x80 : 0)
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| 233 | | ((char)s->opecode & 0x0F);
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| 234 | s->state = 1;
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| 235 | break;
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| 236 | // MASK Payload len
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| 237 | case 1:
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| 238 | if(s->payload_len < 126){
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| 239 | *pos = ((s->masked != 0) ? 0x80 : 0) | s->payload_len;
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| 240 | if (s->masked != 0) {
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| 241 | s->state = 10/*7bit*/;
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| 242 | }
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| 243 | else{
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| 244 | goto payload_check;
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| 245 | }
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| 246 | }
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| 247 | else if(s->payload_len < 0x10000){
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| 248 | *pos = ((s->masked != 0) ? 0x80 : 0) | 126;
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| 249 | s->state = 8/*7+16bit*/;
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| 250 | }
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| 251 | else{
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| 252 | *pos = ((s->masked != 0) ? 0x80 : 0) | 127;
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| 253 | s->state = 2/*7+64bit*/;
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| 254 | }
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| 255 | break;
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| 256 | // 64bit Extended payload length
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| 257 | case 2: case 3: case 4: case 5: case 6: case 7:
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| 258 | // 16bit Extended payload length
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| 259 | case 8: case 9:
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| 260 | *pos = (s->payload_len >> (8 * (9 - s->state)));
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| 261 | s->state++;
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| 262 | if((s->state == 10) && (s->masked == 0)){
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| 263 | goto payload_check;
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| 264 | }
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| 265 | break;
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| 266 | // Masking-key
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| 267 | case 10: case 11: case 12:
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[279] | 268 | *pos = s->masking_key[s->state - 10];
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[270] | 269 | s->state++;
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| 270 | break;
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| 271 | case 13:
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| 272 | *pos = s->masking_key[3];
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| 273 | s->state++;
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| 274 | payload_check:
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| 275 | s->data_pos = 0;
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[279] | 276 | if (s->data_pos < s->payload_len)
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[270] | 277 | s->state = 14;
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| 278 | else
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| 279 | goto next;
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| 280 | break;
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| 281 | // Payload buffer
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| 282 | default:
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| 283 | *pos = _ws_fbs_peek(cur_out_msg, s->data_pos) ^ s->masking_key[s->data_pos % 4];
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| 284 |
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| 285 | s->data_pos++;
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| 286 | if(s->data_pos >= s->payload_len){
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| 287 | goto next;
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| 288 | }
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| 289 | break;
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| 290 | next:
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| 291 | _ws_fbs_del(cur_out_msg);
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| 292 | memset(&cur_out_msg, 0, sizeof(cur_out_msg));
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| 293 | s->state = 0;
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| 294 | websocket_newdata(ws);
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| 295 | break;
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| 296 | }
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| 297 | }
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| 298 |
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| 299 | return (intptr_t)pos - (intptr_t)data;
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| 300 | }
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