Darran Shepherd
/
Bonjour
First step: AutoIP compiled in and working
if/lwip/lwipNetDnsRequest.cpp@0:55a05330f8cc, 2010-06-18 (annotated)
- Committer:
- darran
- Date:
- Fri Jun 18 09:11:35 2010 +0000
- Revision:
- 0:55a05330f8cc
- Child:
- 1:4218cacaf696
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
darran | 0:55a05330f8cc | 1 | |
darran | 0:55a05330f8cc | 2 | /* |
darran | 0:55a05330f8cc | 3 | Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) |
darran | 0:55a05330f8cc | 4 | |
darran | 0:55a05330f8cc | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy |
darran | 0:55a05330f8cc | 6 | of this software and associated documentation files (the "Software"), to deal |
darran | 0:55a05330f8cc | 7 | in the Software without restriction, including without limitation the rights |
darran | 0:55a05330f8cc | 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
darran | 0:55a05330f8cc | 9 | copies of the Software, and to permit persons to whom the Software is |
darran | 0:55a05330f8cc | 10 | furnished to do so, subject to the following conditions: |
darran | 0:55a05330f8cc | 11 | |
darran | 0:55a05330f8cc | 12 | The above copyright notice and this permission notice shall be included in |
darran | 0:55a05330f8cc | 13 | all copies or substantial portions of the Software. |
darran | 0:55a05330f8cc | 14 | |
darran | 0:55a05330f8cc | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
darran | 0:55a05330f8cc | 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
darran | 0:55a05330f8cc | 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
darran | 0:55a05330f8cc | 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
darran | 0:55a05330f8cc | 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
darran | 0:55a05330f8cc | 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
darran | 0:55a05330f8cc | 21 | THE SOFTWARE. |
darran | 0:55a05330f8cc | 22 | */ |
darran | 0:55a05330f8cc | 23 | |
darran | 0:55a05330f8cc | 24 | #include "lwipNetDnsRequest.h" |
darran | 0:55a05330f8cc | 25 | #include "lwip/err.h" //err_t, ERR_xxx |
darran | 0:55a05330f8cc | 26 | #include "lwip/dns.h" |
darran | 0:55a05330f8cc | 27 | |
darran | 0:55a05330f8cc | 28 | #include "netCfg.h" |
darran | 0:55a05330f8cc | 29 | #if NET_LWIP_STACK |
darran | 0:55a05330f8cc | 30 | |
darran | 0:55a05330f8cc | 31 | //#define __DEBUG |
darran | 0:55a05330f8cc | 32 | #include "dbg/dbg.h" |
darran | 0:55a05330f8cc | 33 | |
darran | 0:55a05330f8cc | 34 | LwipNetDnsRequest::LwipNetDnsRequest(const char* hostname) : NetDnsRequest(hostname), m_state(LWIPNETDNS_START), m_cbFired(false) |
darran | 0:55a05330f8cc | 35 | { |
darran | 0:55a05330f8cc | 36 | DBG("New LwipNetDnsRequest %p\n", this); |
darran | 0:55a05330f8cc | 37 | } |
darran | 0:55a05330f8cc | 38 | |
darran | 0:55a05330f8cc | 39 | LwipNetDnsRequest::LwipNetDnsRequest(Host* pHost) : NetDnsRequest(pHost), m_state(LWIPNETDNS_START), m_cbFired(false) |
darran | 0:55a05330f8cc | 40 | { |
darran | 0:55a05330f8cc | 41 | DBG("New LwipNetDnsRequest %p\n", this); |
darran | 0:55a05330f8cc | 42 | } |
darran | 0:55a05330f8cc | 43 | |
darran | 0:55a05330f8cc | 44 | LwipNetDnsRequest::~LwipNetDnsRequest() |
darran | 0:55a05330f8cc | 45 | { |
darran | 0:55a05330f8cc | 46 | DBG("LwipNetDnsRequest %p destroyed\n", this); |
darran | 0:55a05330f8cc | 47 | } |
darran | 0:55a05330f8cc | 48 | |
darran | 0:55a05330f8cc | 49 | /* |
darran | 0:55a05330f8cc | 50 | Main useful function here (see lwip/dns.h): |
darran | 0:55a05330f8cc | 51 | err_t dns_gethostbyname(const char *hostname, ip_addr_t *addr, |
darran | 0:55a05330f8cc | 52 | dns_found_callback found, void *callback_arg); |
darran | 0:55a05330f8cc | 53 | */ |
darran | 0:55a05330f8cc | 54 | |
darran | 0:55a05330f8cc | 55 | //Execute request & return OK if found, NOTFOUND or ERROR on error, or PROCESSING if the request has not completed yet |
darran | 0:55a05330f8cc | 56 | void LwipNetDnsRequest::poll() |
darran | 0:55a05330f8cc | 57 | { |
darran | 0:55a05330f8cc | 58 | err_t err; |
darran | 0:55a05330f8cc | 59 | switch(m_state) |
darran | 0:55a05330f8cc | 60 | { |
darran | 0:55a05330f8cc | 61 | case LWIPNETDNS_START: //First req, let's call dns_gethostbyname |
darran | 0:55a05330f8cc | 62 | ip_addr_t ipStruct; |
darran | 0:55a05330f8cc | 63 | err = dns_gethostbyname(m_hostname, &ipStruct, LwipNetDnsRequest::sFoundCb, (void*) this ); |
darran | 0:55a05330f8cc | 64 | if( err == ERR_OK ) |
darran | 0:55a05330f8cc | 65 | { |
darran | 0:55a05330f8cc | 66 | m_ip = IpAddr(&ipStruct); |
darran | 0:55a05330f8cc | 67 | m_state = LWIPNETDNS_OK; |
darran | 0:55a05330f8cc | 68 | DBG("DNS: Ip found in cache.\n"); |
darran | 0:55a05330f8cc | 69 | } |
darran | 0:55a05330f8cc | 70 | else if( err == ERR_INPROGRESS) |
darran | 0:55a05330f8cc | 71 | { |
darran | 0:55a05330f8cc | 72 | DBG("DNS: Processing.\n"); |
darran | 0:55a05330f8cc | 73 | m_state = LWIPNETDNS_PROCESSING; |
darran | 0:55a05330f8cc | 74 | } |
darran | 0:55a05330f8cc | 75 | else //Likely ERR_VAL |
darran | 0:55a05330f8cc | 76 | { |
darran | 0:55a05330f8cc | 77 | DBG("DNS: Error on init.\n"); |
darran | 0:55a05330f8cc | 78 | m_state = LWIPNETDNS_ERROR; |
darran | 0:55a05330f8cc | 79 | } |
darran | 0:55a05330f8cc | 80 | break; |
darran | 0:55a05330f8cc | 81 | case LWIPNETDNS_PROCESSING: |
darran | 0:55a05330f8cc | 82 | break; //Nothing to do, DNS is polled on interrupt |
darran | 0:55a05330f8cc | 83 | case LWIPNETDNS_OK: |
darran | 0:55a05330f8cc | 84 | if(!m_cbFired) |
darran | 0:55a05330f8cc | 85 | { |
darran | 0:55a05330f8cc | 86 | DBG("DNS: Ip found.\n"); |
darran | 0:55a05330f8cc | 87 | m_cbFired = true; |
darran | 0:55a05330f8cc | 88 | onReply(NETDNS_FOUND); //Raise callback |
darran | 0:55a05330f8cc | 89 | } |
darran | 0:55a05330f8cc | 90 | break; |
darran | 0:55a05330f8cc | 91 | case LWIPNETDNS_NOTFOUND: |
darran | 0:55a05330f8cc | 92 | if(!m_cbFired) |
darran | 0:55a05330f8cc | 93 | { |
darran | 0:55a05330f8cc | 94 | DBG("DNS: could not be resolved.\n"); |
darran | 0:55a05330f8cc | 95 | m_cbFired = true; |
darran | 0:55a05330f8cc | 96 | onReply(NETDNS_NOTFOUND); //Raise callback |
darran | 0:55a05330f8cc | 97 | } |
darran | 0:55a05330f8cc | 98 | break; |
darran | 0:55a05330f8cc | 99 | case LWIPNETDNS_ERROR: |
darran | 0:55a05330f8cc | 100 | default: |
darran | 0:55a05330f8cc | 101 | if(!m_cbFired) |
darran | 0:55a05330f8cc | 102 | { |
darran | 0:55a05330f8cc | 103 | DBG("DNS: Error.\n"); |
darran | 0:55a05330f8cc | 104 | m_cbFired = true; |
darran | 0:55a05330f8cc | 105 | onReply(NETDNS_ERROR); //Raise callback |
darran | 0:55a05330f8cc | 106 | } |
darran | 0:55a05330f8cc | 107 | break; |
darran | 0:55a05330f8cc | 108 | } |
darran | 0:55a05330f8cc | 109 | // return m_state; |
darran | 0:55a05330f8cc | 110 | } |
darran | 0:55a05330f8cc | 111 | |
darran | 0:55a05330f8cc | 112 | void LwipNetDnsRequest::foundCb(const char *name, ip_addr_t *ipaddr) |
darran | 0:55a05330f8cc | 113 | { |
darran | 0:55a05330f8cc | 114 | if( ipaddr == NULL ) |
darran | 0:55a05330f8cc | 115 | { |
darran | 0:55a05330f8cc | 116 | m_state = LWIPNETDNS_NOTFOUND; |
darran | 0:55a05330f8cc | 117 | return; |
darran | 0:55a05330f8cc | 118 | } |
darran | 0:55a05330f8cc | 119 | m_ip = IpAddr(ipaddr); |
darran | 0:55a05330f8cc | 120 | m_state = LWIPNETDNS_OK; |
darran | 0:55a05330f8cc | 121 | } |
darran | 0:55a05330f8cc | 122 | |
darran | 0:55a05330f8cc | 123 | |
darran | 0:55a05330f8cc | 124 | void LwipNetDnsRequest::sFoundCb(const char *name, ip_addr_t *ipaddr, void *arg) |
darran | 0:55a05330f8cc | 125 | { |
darran | 0:55a05330f8cc | 126 | LwipNetDnsRequest* pMe = (LwipNetDnsRequest*) arg; |
darran | 0:55a05330f8cc | 127 | return pMe->foundCb( name, ipaddr ); |
darran | 0:55a05330f8cc | 128 | } |
darran | 0:55a05330f8cc | 129 | |
darran | 0:55a05330f8cc | 130 | #endif |
darran | 0:55a05330f8cc | 131 |