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media/webrtc/signaling/src/sipcc/plat/common/dns_utils.c@ac0c01689b40 (annotated)

media/webrtc/signaling/src/sipcc/plat/common/dns_utils.c

Thu, 15 Jan 2015 15:59:08 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 15 Jan 2015 15:59:08 +0100

branch

TOR_BUG_9701

changeset 10

ac0c01689b40

permissions

-rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	2	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	3	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	4
michael@0	5	#include "cpr_ipc.h"
michael@0	6	#include "cpr_types.h"
michael@0	7
michael@0	8	#ifndef SIP_OS_WINDOWS
michael@0	9	#include "netdb.h"
michael@0	10	#include "arpa/inet.h"
michael@0	11	#endif
michael@0	12
michael@0	13	#include "dns_utils.h"
michael@0	14	#include "phone_debug.h"
michael@0	15	#include "util_string.h"
michael@0	16
michael@0	17	#ifdef SIP_OS_WINDOWS
michael@0	18	cc_int32_t
michael@0	19	dnsGetHostByName (const char *hname,
michael@0	20	cpr_ip_addr_t *ipaddr_ptr,
michael@0	21	cc_int32_t timeout,
michael@0	22	cc_int32_t retries)
michael@0	23	{
michael@0	24	return DNS_ERR_NOHOST;
michael@0	25	}
michael@0	26	#else
michael@0	27	/*
michael@0	28	* dnsGetHostByName
michael@0	29	*
michael@0	30	* DESCRIPTION: Perform an DNS lookup of the name specified
michael@0	31	*
michael@0	32	* RETURNS: returns 0 for success or DNS_ERR_NOHOST
michael@0	33	*
michael@0	34	*/
michael@0	35	cc_int32_t
michael@0	36	dnsGetHostByName (const char *hname,
michael@0	37	cpr_ip_addr_t *ipaddr_ptr,
michael@0	38	cc_int32_t timeout,
michael@0	39	cc_int32_t retries)
michael@0	40	{
michael@0	41	uint32_t ip_address;
michael@0	42	struct hostent *dns_response;
michael@0	43	#ifdef IPV6_STACK_ENABLED
michael@0	44	uint32_t err;
michael@0	45	uint16_t ip_valid;
michael@0	46	char ip_addr[MAX_IPADDR_STR_LEN];
michael@0	47	struct addrinfo hints, *result;
michael@0	48	struct sockaddr sa;
michael@0	49	#endif
michael@0	50
michael@0	51	#ifdef IPV6_STACK_ENABLED
michael@0	52	/* Check if the IPv6 address */
michael@0	53	ip_valid = cpr_inet_pton(AF_INET6, hname, ip_addr);
michael@0	54
michael@0	55	if (ip_valid) {
michael@0	56	ipaddr_ptr->type = CPR_IP_ADDR_IPV6;
michael@0	57	cpr_memcopy(ipaddr_ptr->u.ip6.addr.base8, ip_addr, 16);
michael@0	58	return(0);
michael@0	59	}
michael@0	60	#endif
michael@0	61
michael@0	62	ip_address = inet_addr(hname);
michael@0	63	if (ip_address != INADDR_NONE) {
michael@0	64	ipaddr_ptr->u.ip4 = ip_address;
michael@0	65	ipaddr_ptr->type = CPR_IP_ADDR_IPV4;
michael@0	66	return 0;
michael@0	67	} else {
michael@0	68
michael@0	69	#ifdef IPV6_STACK_ENABLED
michael@0	70	memset(&hints, 0, sizeof(hints));
michael@0	71	hints.ai_family = PF_INET6;
michael@0	72	err = getaddrinfo(hname, NULL, &hints, &result);
michael@0	73
michael@0	74	if (err) {
michael@0	75	return DNS_ERR_NOHOST;
michael@0	76
michael@0	77	}
michael@0	78
michael@0	79	while (result) {
michael@0	80	sa = result->ai_addr;
michael@0	81	if (sa->family == AF_INET) {
michael@0	82	ipaddr_ptr->type = CPR_IP_ADDR_IPV4;
michael@0	83	ip_addr->u.ip4 = ((cpr_sockaddr_in_t *)from)->sin_addr.s_addr;
michael@0	84
michael@0	85	} else if (sa->family == AF_INET6) {
michael@0	86
michael@0	87	//Todo IPv6: Add getaddrinfo() functioncall to get the IPv6 address.
michael@0	88	ipaddr_ptr->type = CPR_IP_ADDR_IPV6;
michael@0	89	ip_addr->u.ip6 = ((cpr_sockaddr_in6_t *)sa)->sin6_addr;
michael@0	90	}
michael@0	91	}
michael@0	92
michael@0	93	freeaddrinfo(result);
michael@0	94	#endif
michael@0	95
michael@0	96	dns_response = gethostbyname(hname);
michael@0	97	if (dns_response) {
michael@0	98	ipaddr_ptr->u.ip4 = *(uint32_t *) dns_response->h_addr_list[0];
michael@0	99	ipaddr_ptr->type = CPR_IP_ADDR_IPV4;
michael@0	100	return 0;
michael@0	101	}
michael@0	102
michael@0	103
michael@0	104	}
michael@0	105	return DNS_ERR_NOHOST;
michael@0	106	}
michael@0	107
michael@0	108	#endif
michael@0	109
michael@0	110	#ifdef SIP_OS_WINDOWS
michael@0	111
michael@0	112	cc_int32_t
michael@0	113	dnsGetHostBySRV (cc_int8_t *service,
michael@0	114	cc_int8_t *protocol,
michael@0	115	cc_int8_t *domain,
michael@0	116	cpr_ip_addr_t *ipaddr_ptr,
michael@0	117	cc_uint16_t *port,
michael@0	118	cc_int32_t timeout,
michael@0	119	cc_int32_t retries,
michael@0	120	srv_handle_t *psrv_handle)
michael@0	121	{
michael@0	122	return DNS_ERR_NOHOST;
michael@0	123	}
michael@0	124
michael@0	125	#else
michael@0	126	/*
michael@0	127	* dnsGetHostBySRV
michael@0	128	*
michael@0	129	* DESCRIPTION: This function calls the dns api to
michael@0	130	* perform a dns srv query
michael@0	131	*
michael@0	132	* RETURNS: returns 0 for success or
michael@0	133	* DNS_ERR_NOHOST, DNS_ERR_HOST_UNAVAIL
michael@0	134	*
michael@0	135	*/
michael@0	136	cc_int32_t
michael@0	137	dnsGetHostBySRV (cc_int8_t *service,
michael@0	138	cc_int8_t *protocol,
michael@0	139	cc_int8_t *domain,
michael@0	140	cpr_ip_addr_t *ipaddr_ptr,
michael@0	141	cc_uint16_t *port,
michael@0	142	cc_int32_t timeout,
michael@0	143	cc_int32_t retries,
michael@0	144	srv_handle_t *psrv_handle)
michael@0	145	{
michael@0	146	uint32_t ip_address;
michael@0	147
michael@0	148
michael@0	149	ip_address = inet_addr(domain);
michael@0	150	if (ip_address != INADDR_NONE) {
michael@0	151	ipaddr_ptr->u.ip4 = ip_address;
michael@0	152	ipaddr_ptr->type = CPR_IP_ADDR_IPV4;
michael@0	153	return 0;
michael@0	154	}
michael@0	155
michael@0	156	return DNS_ERR_NOBUF; /* not yet implemented */
michael@0	157	}
michael@0	158	#endif
michael@0	159
michael@0	160	void
michael@0	161	dnsFreeSrvHandle (srv_handle_t srv_handle)
michael@0	162	{
michael@0	163	// this function does nothing
michael@0	164	// srv_handle = NULL;
michael@0	165	}