[313] | 1 | /*
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| 2 | * TINET (TCP/IP Protocol Stack)
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| 3 | *
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| 4 | * Copyright (C) 2001-2017 by Dep. of Computer Science and Engineering
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| 5 | * Tomakomai National College of Technology, JAPAN
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| 6 | *
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| 7 | * ä¸è¨èä½æ¨©è
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| 8 | ã¯ï¼ä»¥ä¸ã® (1)ï½(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 9 | * ã«ãã£ã¦å
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| 10 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 11 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 12 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 13 | å¸ï¼ä»¥ä¸ï¼
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| 14 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 16 | * 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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| 17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 19 | * ç¨ã§ããå½¢ã§åé
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| 20 | å¸ããå ´åã«ã¯ï¼åé
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| 21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 22 | * è
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| 23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 26 | * ç¨ã§ããªãå½¢ã§åé
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| 27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®æ¡ä»¶ãæºãããã¨ï¼
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| 28 | * (a) åé
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| 29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 32 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 33 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 34 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 35 | 責ãããã¨ï¼
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| 36 | *
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| 37 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 38 | ã
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| 39 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 40 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 41 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 42 | *
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| 43 | * @(#) $Id: ppp_modem.c 313 2017-07-23 04:50:32Z coas-nagasima $
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| 44 | */
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| 45 |
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| 46 | /*
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| 47 | * PPP ã¢ãã å¶å¾¡
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| 48 | */
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| 49 |
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| 50 | #include <string.h>
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| 51 |
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| 52 | #include <t_services.h>
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| 53 | #include "kernel_id.h"
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| 54 |
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| 55 | #include <tinet_defs.h>
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| 56 | #include <tinet_config.h>
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| 57 |
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| 58 | #include <net/if.h>
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| 59 | #include <net/if_ppp.h>
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| 60 | #include <net/net.h>
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| 61 | #include <net/net_endian.h>
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| 62 | #include <net/net_buf.h>
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| 63 | #include <net/net_count.h>
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| 64 | #include <net/ppp.h>
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| 65 | #include <net/ppp_var.h>
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| 66 | #include <net/ppp_fsm.h>
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| 67 | #include <net/ppp_hdlc.h>
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| 68 | #include <net/ppp_modem.h>
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| 69 | #include <net/ppp_lcp.h>
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| 70 |
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| 71 | #ifdef SUPPORT_PPP
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| 72 |
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| 73 | /*
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| 74 | * å
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| 75 | ¨åå¤æ°
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| 76 | */
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| 77 |
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| 78 | uint8_t modem_state = PPP_MODEM_DOWN; /* ã¢ãã ã®ç¶æ
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| 79 | */
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| 80 |
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| 81 | /*
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| 82 | * ã¢ãã å
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| 83 | ¥åæåå
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| 84 | */
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| 85 |
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| 86 | #define MODEM_RCODE_OK 0
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| 87 | #define MODEM_RCODE_CONNECT 1
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| 88 | #define MODEM_RCODE_RING 2
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| 89 | #define MODEM_RCODE_NO_CARRIER 3
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| 90 | #define MODEM_RCODE_ERROR 4
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| 91 | #define MODEM_RCODE_NO_DIALTONE 5
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| 92 | #define MODEM_RCODE_BUSY 6
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| 93 | #define MODEM_RCODE_DELAYED 7
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| 94 |
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| 95 | /*
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| 96 | * å¤æ°
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| 97 | */
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| 98 |
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| 99 | static uint8_t *modem_rcode[] = {
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| 100 | "OK",
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| 101 | "CONNECT",
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| 102 | "RING",
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| 103 | "NO CARRIER",
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| 104 | "ERROR",
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| 105 | "NO DIALTONE",
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| 106 | "BUSY",
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| 107 | "DELAYED"
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| 108 | };
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| 109 |
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| 110 | static int_t dial_retry;
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| 111 |
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| 112 | /*
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| 113 | * é¢æ°
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| 114 | */
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| 115 |
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| 116 | static void do_dial (void);
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| 117 | static void modem_putstr (uint8_t *str);
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| 118 | static void modem_wait (uint8_t *line);
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| 119 | static void modem_putline (uint8_t *line);
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| 120 |
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| 121 | /*
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| 122 | * modem_getline -- ã¢ãã è¡å
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| 123 | ¥å
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| 124 | */
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| 125 |
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| 126 | T_NET_BUF *
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| 127 | modem_getline (T_NET_BUF *nbuf, uint16_t size)
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| 128 | {
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| 129 | uint8_t *buf;
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| 130 |
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| 131 | buf = nbuf->buf;
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| 132 | size --; /* '\0' ã®å */
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| 133 | while (size > 0 && (*buf = HDLC_raw_getoctet()) != '\r') {
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| 134 | buf ++;
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| 135 | size --;
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| 136 | }
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| 137 | *buf = '\0';
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| 138 | HDLC_raw_getoctet(); /* \n ãèªã¿é£ã°ãã*/
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| 139 | nbuf->len = buf - nbuf->buf;
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| 140 | return nbuf;
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| 141 | }
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| 142 |
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| 143 | /*
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| 144 | * ã¢ãã å¶å¾¡
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| 145 | *
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| 146 | * æ»ãå¤: ã¢ãã ããã®ãªã¶ã«ãã³ã¼ã
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| 147 | */
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| 148 |
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| 149 | int_t
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| 150 | modem_cntl (T_NET_BUF *input)
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| 151 | {
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| 152 | int_t code;
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| 153 |
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| 154 | code = sizeof(modem_rcode) / sizeof(uint8_t*) - 1;
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| 155 | while (strcmp(modem_rcode[code], input->buf) != 0) {
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| 156 | if (code == 0)
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| 157 | return modem_state;
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| 158 | code --;
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| 159 | }
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| 160 |
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| 161 | switch (modem_state) {
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| 162 |
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| 163 | case PPP_MODEM_UP:
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| 164 | if (code == MODEM_RCODE_RING)
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| 165 | modem_state = PPP_MODEM_RING;
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| 166 | break;
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| 167 |
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| 168 | case PPP_MODEM_DIAL:
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| 169 | if (code == MODEM_RCODE_CONNECT) {
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| 170 | syslog(LOG_NOTICE, "[MODEM] up.");
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| 171 | modem_state = PPP_MODEM_CONNECT;
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| 172 | lcp_open(PPP_OPEN_ACTIVE);
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| 173 | sig_sem(SEM_MODEM_READY);
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| 174 | }
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| 175 | else {
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| 176 | syslog(LOG_NOTICE, "[MODEM] dial failed '%s'.", modem_rcode[code]);
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| 177 | if (-- dial_retry == 0) {
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| 178 | syslog(LOG_WARNING, "[MODEM] dial failed %d times.", MODEM_CFG_RETRY_CNT);
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| 179 | modem_state = PPP_MODEM_UP;
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| 180 | }
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| 181 | else {
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| 182 | syscall(dly_tsk(MODEM_CFG_RETRY_WAIT));
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| 183 | do_dial();
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| 184 | }
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| 185 | }
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| 186 | break;
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| 187 |
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| 188 | case PPP_MODEM_RING:
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| 189 | if (code == MODEM_RCODE_CONNECT) {
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| 190 | syslog(LOG_NOTICE, "[MODEM] up.");
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| 191 | modem_state = PPP_MODEM_CONNECT;
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| 192 | lcp_open(PPP_OPEN_PASSIVE);
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| 193 | }
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| 194 | else
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| 195 | modem_state = PPP_MODEM_UP;
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| 196 | break;
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| 197 |
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| 198 | default:
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| 199 | if (code == MODEM_RCODE_NO_CARRIER) {
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| 200 | if (lcp_fsm.state == PPP_FSM_OPENED)
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| 201 | lcp_close();
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| 202 | syslog(LOG_NOTICE, "[MODEM] down.");
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| 203 | modem_state = PPP_MODEM_UP;
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| 204 | }
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| 205 | break;
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| 206 |
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| 207 | }
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| 208 |
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| 209 | return code;
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| 210 | }
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| 211 |
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| 212 | /*
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| 213 | * init_modem -- ã¢ãã ãåæåããã
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| 214 | */
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| 215 |
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| 216 | void
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| 217 | init_modem (void)
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| 218 | {
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| 219 | modem_putline("AT");
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| 220 |
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| 221 | #ifdef MODEM_CFG_INIT
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| 222 |
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| 223 | modem_putline(MODEM_CFG_INIT);
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| 224 |
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| 225 | #endif /* of #ifdef MODEM_CFG_INIT */
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| 226 |
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| 227 | modem_state = PPP_MODEM_UP;
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| 228 | }
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| 229 |
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| 230 | /*
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| 231 | * wait_modem -- æ¥ç¶å®äºã¾ã§å¾
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| 232 | ã¤ã
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| 233 | *
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| 234 | * æ»ãå¤: æ¥ç¶ã«å¤±æããã E_OBJ ãè¿ãã
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| 235 | */
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| 236 |
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| 237 | ER
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| 238 | wait_modem (void)
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| 239 | {
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| 240 | ER error = E_OK;
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| 241 |
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| 242 | if (modem_state == PPP_MODEM_UP) {
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| 243 | dial();
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| 244 | }
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| 245 |
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| 246 | if (modem_state != PPP_MODEM_CONNECT) {
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| 247 | /* æ¥ç¶å®äºã¾ã§å¾
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| 248 | ã¤ã*/
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| 249 | wai_sem(SEM_MODEM_READY);
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| 250 | if (modem_state != PPP_MODEM_CONNECT)
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| 251 | error = E_OBJ;
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| 252 | }
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| 253 |
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| 254 | return error;
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| 255 | }
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| 256 |
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| 257 | /*
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| 258 | * dial -- ãã¤ã¤ã«ããããªãã©ã¤åæ°ãã»ããããã
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| 259 | */
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| 260 |
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| 261 | void
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| 262 | dial (void)
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| 263 | {
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| 264 | do_dial();
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| 265 | dial_retry = MODEM_CFG_RETRY_CNT;
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| 266 | modem_state = PPP_MODEM_DIAL;
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| 267 | }
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| 268 |
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| 269 | /*
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| 270 | * do_dial -- ãã¤ã¤ã«ãããdial() ã®ä¸è«ãé¢æ°
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| 271 | */
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| 272 |
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| 273 | static void
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| 274 | do_dial (void)
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| 275 | {
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| 276 | syslog(LOG_NOTICE, "[MODEM] dial: %s.", MODEM_CFG_PHONE_NUMBER);
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| 277 | modem_putstr(MODEM_CFG_DIAL);
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| 278 | modem_putstr(MODEM_CFG_PHONE_NUMBER);
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| 279 | modem_putstr("\r");
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| 280 | }
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| 281 |
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| 282 | /*
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| 283 | * modem_putstr -- ã¢ãã æåååºå
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| 284 | */
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| 285 |
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| 286 | static void
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| 287 | modem_putstr (uint8_t *str)
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| 288 | {
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| 289 | while (*str)
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| 290 | HDLC_raw_putoctet(*str ++);
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| 291 | }
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| 292 |
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| 293 | /*
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| 294 | * modem_wait -- ã¢ãã ããæååãå¾
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| 295 | ã¤
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| 296 | */
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| 297 |
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| 298 | static void
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| 299 | modem_wait (uint8_t *line)
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| 300 | {
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| 301 | int_t ch, state, len = strlen(line);
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| 302 |
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| 303 | state = len;
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| 304 | while (state != 0) {
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| 305 | ch = HDLC_raw_getoctet();
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| 306 | if (ch != line[len - state])
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| 307 | state = len;
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| 308 | if (ch == line[len - state])
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| 309 | state --;
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| 310 | }
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| 311 | }
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| 312 |
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| 313 | /*
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| 314 | * modem_putline -- ã¢ãã è¡åºå
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| 315 | */
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| 316 |
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| 317 | static void
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| 318 | modem_putline (uint8_t *line)
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| 319 | {
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| 320 | modem_putstr(line);
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| 321 | modem_putstr("\r");
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| 322 | modem_wait("OK\r\n");
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| 323 | }
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| 324 |
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| 325 | #endif /* fo #ifdef SUPPORT_PPP */
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