1 | /*
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2 | * Redistribution and use in source and binary forms, with or without modification,
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3 | * are permitted provided that the following conditions are met:
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4 | *
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5 | * 1. Redistributions of source code must retain the above copyright notice,
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6 | * this list of conditions and the following disclaimer.
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7 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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8 | * this list of conditions and the following disclaimer in the documentation
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9 | * and/or other materials provided with the distribution.
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10 | * 3. The name of the author may not be used to endorse or promote products
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11 | * derived from this software without specific prior written permission.
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12 | *
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13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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14 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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15 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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16 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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17 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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18 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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19 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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20 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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21 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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22 | * OF SUCH DAMAGE.
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23 | *
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24 | * This file is part of the lwIP TCP/IP stack.
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25 | *
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26 | * Author: Dirk Ziegelmeier <dziegel@gmx.de>
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27 | *
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28 | */
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29 |
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30 | #include "lwip/dns.h"
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31 |
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32 | #ifndef PPPOS_SUPPORT
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33 | #define PPPOS_SUPPORT 0
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34 | #endif /* PPPOS_SUPPORT */
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35 |
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36 | #if PPPOS_SUPPORT
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37 | #include "netif/ppp/pppos.h"
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38 | #include "lwip/sio.h"
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39 | #define PPP_PTY_TEST 1
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40 | #endif /* PPPOS_SUPPORT */
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41 |
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42 | #include "pppos_example.h"
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43 |
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44 | #if PPPOS_SUPPORT
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45 | static sio_fd_t ppp_sio;
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46 | static ppp_pcb *ppp;
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47 | static struct netif pppos_netif;
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48 |
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49 | static void
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50 | pppos_rx_thread(void *arg)
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51 | {
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52 | u32_t len;
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53 | u8_t buffer[128];
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54 | LWIP_UNUSED_ARG(arg);
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55 |
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56 | /* Please read the "PPPoS input path" chapter in the PPP documentation. */
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57 | while (1) {
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58 | len = sio_read(ppp_sio, buffer, sizeof(buffer));
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59 | if (len > 0) {
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60 | /* Pass received raw characters from PPPoS to be decoded through lwIP
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61 | * TCPIP thread using the TCPIP API. This is thread safe in all cases
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62 | * but you should avoid passing data byte after byte. */
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63 | pppos_input_tcpip(ppp, buffer, len);
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64 | }
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65 | }
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66 | }
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67 |
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68 | static void
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69 | ppp_link_status_cb(ppp_pcb *pcb, int err_code, void *ctx)
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70 | {
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71 | struct netif *pppif = ppp_netif(pcb);
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72 | LWIP_UNUSED_ARG(ctx);
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73 |
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74 | switch(err_code) {
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75 | case PPPERR_NONE: /* No error. */
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76 | {
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77 | #if LWIP_DNS
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78 | const ip_addr_t *ns;
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79 | #endif /* LWIP_DNS */
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80 | fprintf(stderr, "ppp_link_status_cb: PPPERR_NONE\n\r");
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81 | #if LWIP_IPV4
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82 | fprintf(stderr, " our_ip4addr = %s\n\r", ip4addr_ntoa(netif_ip4_addr(pppif)));
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83 | fprintf(stderr, " his_ipaddr = %s\n\r", ip4addr_ntoa(netif_ip4_gw(pppif)));
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84 | fprintf(stderr, " netmask = %s\n\r", ip4addr_ntoa(netif_ip4_netmask(pppif)));
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85 | #endif /* LWIP_IPV4 */
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86 | #if LWIP_IPV6
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87 | fprintf(stderr, " our_ip6addr = %s\n\r", ip6addr_ntoa(netif_ip6_addr(pppif, 0)));
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88 | #endif /* LWIP_IPV6 */
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89 |
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90 | #if LWIP_DNS
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91 | ns = dns_getserver(0);
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92 | fprintf(stderr, " dns1 = %s\n\r", ipaddr_ntoa(ns));
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93 | ns = dns_getserver(1);
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94 | fprintf(stderr, " dns2 = %s\n\r", ipaddr_ntoa(ns));
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95 | #endif /* LWIP_DNS */
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96 | #if PPP_IPV6_SUPPORT
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97 | fprintf(stderr, " our6_ipaddr = %s\n\r", ip6addr_ntoa(netif_ip6_addr(pppif, 0)));
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98 | #endif /* PPP_IPV6_SUPPORT */
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99 | }
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100 | break;
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101 |
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102 | case PPPERR_PARAM: /* Invalid parameter. */
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103 | printf("ppp_link_status_cb: PPPERR_PARAM\n");
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104 | break;
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105 |
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106 | case PPPERR_OPEN: /* Unable to open PPP session. */
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107 | printf("ppp_link_status_cb: PPPERR_OPEN\n");
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108 | break;
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109 |
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110 | case PPPERR_DEVICE: /* Invalid I/O device for PPP. */
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111 | printf("ppp_link_status_cb: PPPERR_DEVICE\n");
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112 | break;
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113 |
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114 | case PPPERR_ALLOC: /* Unable to allocate resources. */
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115 | printf("ppp_link_status_cb: PPPERR_ALLOC\n");
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116 | break;
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117 |
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118 | case PPPERR_USER: /* User interrupt. */
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119 | printf("ppp_link_status_cb: PPPERR_USER\n");
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120 | break;
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121 |
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122 | case PPPERR_CONNECT: /* Connection lost. */
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123 | printf("ppp_link_status_cb: PPPERR_CONNECT\n");
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124 | break;
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125 |
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126 | case PPPERR_AUTHFAIL: /* Failed authentication challenge. */
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127 | printf("ppp_link_status_cb: PPPERR_AUTHFAIL\n");
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128 | break;
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129 |
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130 | case PPPERR_PROTOCOL: /* Failed to meet protocol. */
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131 | printf("ppp_link_status_cb: PPPERR_PROTOCOL\n");
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132 | break;
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133 |
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134 | case PPPERR_PEERDEAD: /* Connection timeout. */
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135 | printf("ppp_link_status_cb: PPPERR_PEERDEAD\n");
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136 | break;
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137 |
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138 | case PPPERR_IDLETIMEOUT: /* Idle Timeout. */
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139 | printf("ppp_link_status_cb: PPPERR_IDLETIMEOUT\n");
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140 | break;
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141 |
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142 | case PPPERR_CONNECTTIME: /* PPPERR_CONNECTTIME. */
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143 | printf("ppp_link_status_cb: PPPERR_CONNECTTIME\n");
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144 | break;
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145 |
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146 | case PPPERR_LOOPBACK: /* Connection timeout. */
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147 | printf("ppp_link_status_cb: PPPERR_LOOPBACK\n");
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148 | break;
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149 |
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150 | default:
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151 | printf("ppp_link_status_cb: unknown errCode %d\n", err_code);
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152 | break;
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153 | }
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154 | }
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155 |
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156 | static u32_t
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157 | ppp_output_cb(ppp_pcb *pcb, u8_t *data, u32_t len, void *ctx)
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158 | {
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159 | LWIP_UNUSED_ARG(pcb);
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160 | LWIP_UNUSED_ARG(ctx);
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161 | return sio_write(ppp_sio, data, len);
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162 | }
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163 |
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164 | #if LWIP_NETIF_STATUS_CALLBACK
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165 | static void
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166 | netif_status_callback(struct netif *nif)
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167 | {
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168 | printf("PPPNETIF: %c%c%d is %s\n", nif->name[0], nif->name[1], nif->num,
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169 | netif_is_up(nif) ? "UP" : "DOWN");
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170 | #if LWIP_IPV4
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171 | printf("IPV4: Host at %s ", ip4addr_ntoa(netif_ip4_addr(nif)));
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172 | printf("mask %s ", ip4addr_ntoa(netif_ip4_netmask(nif)));
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173 | printf("gateway %s\n", ip4addr_ntoa(netif_ip4_gw(nif)));
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174 | #endif /* LWIP_IPV4 */
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175 | #if LWIP_IPV6
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176 | printf("IPV6: Host at %s\n", ip6addr_ntoa(netif_ip6_addr(nif, 0)));
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177 | #endif /* LWIP_IPV6 */
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178 | #if LWIP_NETIF_HOSTNAME
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179 | printf("FQDN: %s\n", netif_get_hostname(nif));
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180 | #endif /* LWIP_NETIF_HOSTNAME */
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181 | }
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182 | #endif /* LWIP_NETIF_STATUS_CALLBACK */
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183 | #endif
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184 |
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185 | void
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186 | pppos_example_init(void)
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187 | {
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188 | #if PPPOS_SUPPORT
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189 | #if PPP_PTY_TEST
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190 | ppp_sio = sio_open(2);
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191 | #else
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192 | ppp_sio = sio_open(0);
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193 | #endif
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194 | if(!ppp_sio)
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195 | {
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196 | perror("PPPOS example: Error opening device");
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197 | return;
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198 | }
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199 |
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200 | ppp = pppos_create(&pppos_netif, ppp_output_cb, ppp_link_status_cb, NULL);
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201 | if (!ppp)
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202 | {
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203 | printf("PPPOS example: Could not create PPP control interface");
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204 | return;
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205 | }
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206 |
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207 | #ifdef LWIP_PPP_CHAP_TEST
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208 | ppp_set_auth(ppp, PPPAUTHTYPE_CHAP, "lwip", "mysecret");
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209 | #endif
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210 |
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211 | ppp_connect(ppp, 0);
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212 |
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213 | #if LWIP_NETIF_STATUS_CALLBACK
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214 | netif_set_status_callback(&pppos_netif, netif_status_callback);
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215 | #endif /* LWIP_NETIF_STATUS_CALLBACK */
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216 |
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217 | sys_thread_new("pppos_rx_thread", pppos_rx_thread, NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
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218 | #endif /* PPPOS_SUPPORT */
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219 | }
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