| 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 | * ãLì ÒÍCȺÌ(1)`(4)Ìðð½·êÉÀèC{\tgEF
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| 7 | * Ai{\tgEFAðüϵ½àÌðÜÞDȺ¯¶jðgpE¡»Eü
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| 8 | * ÏEÄzziȺCpÆÄÔj·é±Æð³Åø·éD
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| 9 | * (1) {\tgEFAð\[XR[hÌ`Åp·éêÉÍCãLÌì
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| 10 | * \¦C±Ìpð¨æѺL̳ÛØKèªC»ÌÜÜÌ`Å\[
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| 11 | * XR[hÉÜÜêÄ¢é±ÆD
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| 12 | * (2) {\tgEFAðCCu`®ÈÇC¼Ì\tgEFAJÉg
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| 13 | * pÅ«é`ÅÄzz·éêÉÍCÄzzɺ¤hL
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| 14 | gip
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| 15 | * Ò}j
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| 16 | AÈÇjÉCãLÌì \¦C±Ìpð¨æѺL
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| 17 | * ̳ÛØKèðfÚ·é±ÆD
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| 18 | * (3) {\tgEFAðC@íÉgÝÞÈÇC¼Ì\tgEFAJÉg
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| 19 | * pÅ«È¢`ÅÄzz·éêÉÍCÌ¢¸ê©Ìðð½·±
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| 20 | * ÆD
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| 21 | * (a) Äzzɺ¤hL
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| 22 | gipÒ}j
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| 23 | AÈÇjÉCãLÌ
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| 24 | * ì \¦C±Ìpð¨æѺL̳ÛØKèðfÚ·é±ÆD
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| 25 | * (b) ÄzzÌ`ÔðCÊÉèßéû@ÉæÁÄCTOPPERSvWFNgÉ
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| 26 | * ñ·é±ÆD
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| 27 | * (4) {\tgEFAÌpÉæè¼ÚIܽÍÔÚIɶ¶é¢©Èé¹
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| 28 | * Q©çàCãLì Ò¨æÑTOPPERSvWFNgðÆÓ·é±ÆD
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| 29 | * ܽC{\tgEFAÌ[UܽÍGh[U©çÌ¢©Èé
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| 30 | * RÉîÿ©çàCãLì Ò¨æÑTOPPERSvWFNgð
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| 31 | * ÆÓ·é±ÆD
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| 32 | *
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| 33 | * {\tgEFAÍC³ÛØÅñ³êÄ¢éàÌÅ éDãLì Ò¨
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| 34 | * æÑTOPPERSvWFNgÍC{\tgEFAÉÖµÄCÁèÌgpÚI
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| 35 | * ÉηéK«àÜßÄC¢©ÈéÛØàsíÈ¢DܽC{\tgEF
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| 36 | * AÌpÉæè¼ÚIܽÍÔÚIɶ¶½¢©Èé¹QÉÖµÄàC»
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| 37 | * ÌÓCðíÈ¢D
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| 38 | *
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| 39 | * @(#) $Id: websocket.c 101 2015-06-02 15:37:23Z coas-nagasima $
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| 40 | */
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| 41 |
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| 42 | #include <string.h>
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| 43 | #include "websocket.h"
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| 44 | #include "uip.h"
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| 45 | #include "kernel.h"
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| 46 | #include "kernel_cfg.h"
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| 47 |
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| 48 | static ECN_FBS_ID cur_out_msg;
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| 49 |
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| 50 | void websocket_init(struct websocket *ws, ID wbsid)
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| 51 | {
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| 52 | memset(ws, 0, sizeof(*ws));
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| 53 | ws->wbsid = wbsid;
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| 54 | }
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| 55 |
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| 56 | void websocket_destroy(struct websocket *ws)
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| 57 | {
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| 58 | if ((cur_out_msg.ptr != NULL) && (((ID *)cur_out_msg.ptr->_gap)[0] == ws->wbsid))
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| 59 | {
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| 60 | _ecn_fbs_del(cur_out_msg);
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| 61 | memset(&cur_out_msg, 0, sizeof(cur_out_msg));
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| 62 | }
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| 63 |
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| 64 | if (ws->cur_in_msg.ptr != NULL) {
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| 65 | _ecn_fbs_del(ws->cur_in_msg);
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| 66 | memset(&ws->cur_in_msg, 0, sizeof(ws->cur_in_msg));
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| 67 | }
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| 68 |
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| 69 | ws->wbsid = 0;
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| 70 | }
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| 71 |
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| 72 | int websocket_input(struct websocket *ws, const void *data, int len)
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| 73 | {
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| 74 | ws_state_t *s = &ws->rstate;
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| 75 | const u8_t *pos = (const u8_t *)data, *end = &((const u8_t *)data)[len];
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| 76 |
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| 77 | for(; pos < end; pos++){
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| 78 | switch (s->state)
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| 79 | {
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| 80 | // FIN RSV1-3 OPECODE
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| 81 | case 0:
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| 82 | s->fin = (*pos & 0x80) != 0;
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| 83 | s->opecode = (enum opecode_t)(*pos & 0x0F);
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| 84 | s->state = 1;
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| 85 | break;
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| 86 | // MASK Payload len
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| 87 | case 1:
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| 88 | // MASK=0ÍNG
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| 89 | if((*pos & 0x80) == 0)
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| 90 | return -1/*MASK_ERROR*/;
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| 91 |
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| 92 | switch(*pos & 0x7F){
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| 93 | case 127:
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| 94 | s->payload_len = 0;
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| 95 | s->state = 2/*7+64bit*/;
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| 96 | break;
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| 97 | case 126:
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| 98 | s->payload_len = 0;
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| 99 | s->state = 8/*7+16bit*/;
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| 100 | break;
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| 101 | default:
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| 102 | s->payload_len = *pos & 0x7F;
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| 103 | s->state = 10/*7bit*/;
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| 104 | break;
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| 105 | }
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| 106 | break;
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| 107 | // 64bit Extended payload length
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| 108 | case 2: case 3: case 4: case 5: case 6: case 7:
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| 109 | // 16bit Extended payload length
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| 110 | case 8: case 9:
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| 111 | s->payload_len = (s->payload_len << 8) + *pos;
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| 112 | s->state++;
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| 113 | break;
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| 114 | // Masking-key
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| 115 | case 10: case 11: case 12:
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| 116 | s->masking_key[s->state - 10] = *pos;
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| 117 | s->state++;
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| 118 | break;
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| 119 | case 13:
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| 120 | s->masking_key[3] = *pos;
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| 121 |
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| 122 | s->data_pos = 0;
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| 123 | if (s->payload_len <= 0) {
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| 124 | s->state = 0;
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| 125 | }
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| 126 | else {
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| 127 | _ecn_fbs_cre(1, &ws->cur_in_msg);
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| 128 | s->state++;
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| 129 | }
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| 130 | break;
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| 131 | // Payload buffer
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| 132 | default:
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| 133 | _ecn_fbs_poke(ws->cur_in_msg, s->data_pos, *pos ^ s->masking_key[s->data_pos % 4]);
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| 134 |
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| 135 | s->data_pos++;
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| 136 | if (s->data_pos >= s->payload_len) {
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| 137 | ER ret;
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| 138 | s->state = 0;
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| 139 | ((ID *)ws->cur_in_msg.ptr->_gap)[0] = ws->wbsid;
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| 140 | ret = psnd_dtq(ecn_api_mailboxid, (intptr_t)ws->cur_in_msg.ptr);
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| 141 | if (ret != E_OK) {
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| 142 | syslog(LOG_WARNING, "websocket_input() : psnd_dtq(%d) result = %d", ecn_api_mailboxid, ret);
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| 143 | _ecn_fbs_del(ws->cur_in_msg);
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| 144 | }
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| 145 | memset(&ws->cur_in_msg, 0, sizeof(ws->cur_in_msg));
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| 146 | }
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| 147 | break;
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| 148 | }
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| 149 | }
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| 150 |
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| 151 | return 0;
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| 152 | }
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| 153 |
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| 154 | bool_t websocket_newdata(struct websocket *ws)
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| 155 | {
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| 156 | ws_state_t *s = &ws->wstate;
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| 157 | struct websocket *mws;
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| 158 | ER ret;
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| 159 | ECN_FBS_ID data;
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| 160 | ID wbsid;
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| 161 |
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| 162 | if(s->state != 0)
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| 163 | return true;
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| 164 |
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| 165 | if (cur_out_msg.ptr != NULL)
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| 166 | return (((ID *)cur_out_msg.ptr->_gap)[0] == ws->wbsid);
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| 167 |
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| 168 | for (;;) {
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| 169 | ret = prcv_dtq(WEBSOCKET_MBXID, (intptr_t *)&data.ptr);
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| 170 | if (ret == E_TMOUT)
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| 171 | return false;
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| 172 |
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| 173 | if (ret != E_OK) {
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| 174 | TOPPERS_assert_abort();
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| 175 | return false;
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| 176 | }
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| 177 |
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| 178 | wbsid = ((ID *)data.ptr->_gap)[0];
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| 179 | mws = websocket_getws(wbsid);
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| 180 | if ((mws != NULL) && (mws->wbsid != 0))
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| 181 | break;
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| 182 |
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| 183 | _ecn_fbs_del(cur_out_msg);
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| 184 | }
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| 185 |
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| 186 | cur_out_msg.ptr = data.ptr;
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| 187 |
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| 188 | return (wbsid == ws->wbsid);
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| 189 | }
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| 190 |
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| 191 | int websocket_output(struct websocket *ws, void *data, int len)
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| 192 | {
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| 193 | ws_state_t *s = &ws->wstate;
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| 194 | u8_t *pos = (u8_t *)data, *end = &((u8_t *)data)[len];
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| 195 |
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| 196 | for(; pos < end; pos++){
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| 197 | switch (s->state)
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| 198 | {
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| 199 | // FIN RSV1-3 OPECODE
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| 200 | case 0:
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| 201 | if ((cur_out_msg.ptr == NULL) || (((ID *)cur_out_msg.ptr->_gap)[0] != ws->wbsid))
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| 202 | return (intptr_t)pos - (intptr_t)data;
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| 203 |
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| 204 | s->payload_len = _ecn_fbs_get_datalen(cur_out_msg);
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| 205 | if(s->payload_len == 0){
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| 206 | goto next;
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| 207 | }
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| 208 |
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| 209 | s->fin = 1;
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| 210 | s->opecode = text_frame;
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| 211 | s->masked = 0;//
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| 212 | s->masking_key[0] = 0;//0x01;
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| 213 | s->masking_key[1] = 0;//0x23;
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| 214 | s->masking_key[2] = 0;//0x45;
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| 215 | s->masking_key[3] = 0;//0x67;
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| 216 |
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| 217 | *pos = ((s->fin != 0) ? 0x80 : 0)
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| 218 | | ((char)s->opecode & 0x0F);
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| 219 | s->state = 1;
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| 220 | break;
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| 221 | // MASK Payload len
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| 222 | case 1:
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| 223 | if(s->payload_len < 126){
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| 224 | *pos = ((s->masked != 0) ? 0x80 : 0) | s->payload_len;
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| 225 | if (s->masked != 0) {
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| 226 | s->state = 10/*7bit*/;
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| 227 | }
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| 228 | else{
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| 229 | goto payload_check;
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| 230 | }
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| 231 | }
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| 232 | else if(s->payload_len < 0x10000){
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| 233 | *pos = ((s->masked != 0) ? 0x80 : 0) | 126;
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| 234 | s->state = 8/*7+16bit*/;
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| 235 | }
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| 236 | else{
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| 237 | *pos = ((s->masked != 0) ? 0x80 : 0) | 127;
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| 238 | s->state = 2/*7+64bit*/;
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| 239 | }
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| 240 | break;
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| 241 | // 64bit Extended payload length
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| 242 | case 2: case 3: case 4: case 5: case 6: case 7:
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| 243 | // 16bit Extended payload length
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| 244 | case 8: case 9:
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| 245 | *pos = (s->payload_len >> (8 * (9 - s->state)));
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| 246 | s->state++;
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| 247 | if((s->state == 10) && (s->masked == 0)){
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| 248 | goto payload_check;
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| 249 | }
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| 250 | break;
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| 251 | // Masking-key
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| 252 | case 10: case 11: case 12:
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| 253 | *pos = s->masking_key[s->state - 10];
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| 254 | s->state++;
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| 255 | break;
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| 256 | case 13:
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| 257 | *pos = s->masking_key[3];
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| 258 | s->state++;
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| 259 | payload_check:
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| 260 | s->data_pos = 0;
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| 261 | if (s->data_pos < s->payload_len)
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| 262 | s->state = 14;
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| 263 | else
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| 264 | goto next;
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| 265 | break;
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| 266 | // Payload buffer
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| 267 | default:
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| 268 | *pos = _ecn_fbs_peek(cur_out_msg, s->data_pos) ^ s->masking_key[s->data_pos % 4];
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| 269 |
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| 270 | s->data_pos++;
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| 271 | if(s->data_pos >= s->payload_len){
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| 272 | goto next;
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| 273 | }
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| 274 | break;
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| 275 | next:
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| 276 | _ecn_fbs_del(cur_out_msg);
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| 277 | memset(&cur_out_msg, 0, sizeof(cur_out_msg));
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| 278 | s->state = 0;
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| 279 | websocket_newdata(ws);
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| 280 | break;
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| 281 | }
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| 282 | }
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| 283 |
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| 284 | return (intptr_t)pos - (intptr_t)data;
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| 285 | }
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