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monero/external/unbound/util/net_help.c
Erik de Castro Lopo a85b5759f3 Upgrade unbound library 
These files were pulled from the 1.6.3 release tarball.

This new version builds against OpenSSL version 1.1 which will be
the default in the new Debian Stable which is due to be released
RealSoonNow (tm).
2017-06-17 23:04:00 +10:00

841 lines
22 KiB
C
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/*
* util/net_help.c - implementation of the network helper code
*
* Copyright (c) 2007, NLnet Labs. All rights reserved.
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the NLNET LABS nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \file
* Implementation of net_help.h.
*/
#include "config.h"
#include "util/net_help.h"
#include "util/log.h"
#include "util/data/dname.h"
#include "util/module.h"
#include "util/regional.h"
#include "sldns/parseutil.h"
#include "sldns/wire2str.h"
#include <fcntl.h>
#ifdef HAVE_OPENSSL_SSL_H
#include <openssl/ssl.h>
#endif
#ifdef HAVE_OPENSSL_ERR_H
#include <openssl/err.h>
#endif
/** max length of an IP address (the address portion) that we allow */
#define MAX_ADDR_STRLEN 128 /* characters */
/** default value for EDNS ADVERTISED size */
uint16_t EDNS_ADVERTISED_SIZE = 4096;
/** minimal responses when positive answer: default is no */
int MINIMAL_RESPONSES = 0;
/** rrset order roundrobin: default is no */
int RRSET_ROUNDROBIN = 0;
/* returns true is string addr is an ip6 specced address */
int
str_is_ip6(const char* str)
{
if(strchr(str, ':'))
return 1;
else return 0;
}
int
fd_set_nonblock(int s)
{
#ifdef HAVE_FCNTL
int flag;
if((flag = fcntl(s, F_GETFL)) == -1) {
log_err("can't fcntl F_GETFL: %s", strerror(errno));
flag = 0;
}
flag |= O_NONBLOCK;
if(fcntl(s, F_SETFL, flag) == -1) {
log_err("can't fcntl F_SETFL: %s", strerror(errno));
return 0;
}
#elif defined(HAVE_IOCTLSOCKET)
unsigned long on = 1;
if(ioctlsocket(s, FIONBIO, &on) != 0) {
log_err("can't ioctlsocket FIONBIO on: %s",
wsa_strerror(WSAGetLastError()));
}
#endif
return 1;
}
int
fd_set_block(int s)
{
#ifdef HAVE_FCNTL
int flag;
if((flag = fcntl(s, F_GETFL)) == -1) {
log_err("cannot fcntl F_GETFL: %s", strerror(errno));
flag = 0;
}
flag &= ~O_NONBLOCK;
if(fcntl(s, F_SETFL, flag) == -1) {
log_err("cannot fcntl F_SETFL: %s", strerror(errno));
return 0;
}
#elif defined(HAVE_IOCTLSOCKET)
unsigned long off = 0;
if(ioctlsocket(s, FIONBIO, &off) != 0) {
log_err("can't ioctlsocket FIONBIO off: %s",
wsa_strerror(WSAGetLastError()));
}
#endif
return 1;
}
int
is_pow2(size_t num)
{
if(num == 0) return 1;
return (num & (num-1)) == 0;
}
void*
memdup(void* data, size_t len)
{
void* d;
if(!data) return NULL;
if(len == 0) return NULL;
d = malloc(len);
if(!d) return NULL;
memcpy(d, data, len);
return d;
}
void
log_addr(enum verbosity_value v, const char* str,
struct sockaddr_storage* addr, socklen_t addrlen)
{
uint16_t port;
const char* family = "unknown";
char dest[100];
int af = (int)((struct sockaddr_in*)addr)->sin_family;
void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr;
if(verbosity < v)
return;
switch(af) {
case AF_INET: family="ip4"; break;
case AF_INET6: family="ip6";
sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr;
break;
case AF_LOCAL:
dest[0]=0;
(void)inet_ntop(af, sinaddr, dest,
(socklen_t)sizeof(dest));
verbose(v, "%s local %s", str, dest);
return; /* do not continue and try to get port */
default: break;
}
if(inet_ntop(af, sinaddr, dest, (socklen_t)sizeof(dest)) == 0) {
(void)strlcpy(dest, "(inet_ntop error)", sizeof(dest));
}
dest[sizeof(dest)-1] = 0;
port = ntohs(((struct sockaddr_in*)addr)->sin_port);
if(verbosity >= 4)
verbose(v, "%s %s %s port %d (len %d)", str, family, dest,
(int)port, (int)addrlen);
else verbose(v, "%s %s port %d", str, dest, (int)port);
}
int
extstrtoaddr(const char* str, struct sockaddr_storage* addr,
socklen_t* addrlen)
{
char* s;
int port = UNBOUND_DNS_PORT;
if((s=strchr(str, '@'))) {
char buf[MAX_ADDR_STRLEN];
if(s-str >= MAX_ADDR_STRLEN) {
return 0;
}
(void)strlcpy(buf, str, sizeof(buf));
buf[s-str] = 0;
port = atoi(s+1);
if(port == 0 && strcmp(s+1,"0")!=0) {
return 0;
}
return ipstrtoaddr(buf, port, addr, addrlen);
}
return ipstrtoaddr(str, port, addr, addrlen);
}
int
ipstrtoaddr(const char* ip, int port, struct sockaddr_storage* addr,
socklen_t* addrlen)
{
uint16_t p;
if(!ip) return 0;
p = (uint16_t) port;
if(str_is_ip6(ip)) {
char buf[MAX_ADDR_STRLEN];
char* s;
struct sockaddr_in6* sa = (struct sockaddr_in6*)addr;
*addrlen = (socklen_t)sizeof(struct sockaddr_in6);
memset(sa, 0, *addrlen);
sa->sin6_family = AF_INET6;
sa->sin6_port = (in_port_t)htons(p);
if((s=strchr(ip, '%'))) { /* ip6%interface, rfc 4007 */
if(s-ip >= MAX_ADDR_STRLEN)
return 0;
(void)strlcpy(buf, ip, sizeof(buf));
buf[s-ip]=0;
sa->sin6_scope_id = (uint32_t)atoi(s+1);
ip = buf;
}
if(inet_pton((int)sa->sin6_family, ip, &sa->sin6_addr) <= 0) {
return 0;
}
} else { /* ip4 */
struct sockaddr_in* sa = (struct sockaddr_in*)addr;
*addrlen = (socklen_t)sizeof(struct sockaddr_in);
memset(sa, 0, *addrlen);
sa->sin_family = AF_INET;
sa->sin_port = (in_port_t)htons(p);
if(inet_pton((int)sa->sin_family, ip, &sa->sin_addr) <= 0) {
return 0;
}
}
return 1;
}
int netblockstrtoaddr(const char* str, int port, struct sockaddr_storage* addr,
socklen_t* addrlen, int* net)
{
char* s = NULL;
*net = (str_is_ip6(str)?128:32);
if((s=strchr(str, '/'))) {
if(atoi(s+1) > *net) {
log_err("netblock too large: %s", str);
return 0;
}
*net = atoi(s+1);
if(*net == 0 && strcmp(s+1, "0") != 0) {
log_err("cannot parse netblock: '%s'", str);
return 0;
}
if(!(s = strdup(str))) {
log_err("out of memory");
return 0;
}
*strchr(s, '/') = '\0';
}
if(!ipstrtoaddr(s?s:str, port, addr, addrlen)) {
free(s);
log_err("cannot parse ip address: '%s'", str);
return 0;
}
if(s) {
free(s);
addr_mask(addr, *addrlen, *net);
}
return 1;
}
void
log_nametypeclass(enum verbosity_value v, const char* str, uint8_t* name,
uint16_t type, uint16_t dclass)
{
char buf[LDNS_MAX_DOMAINLEN+1];
char t[12], c[12];
const char *ts, *cs;
if(verbosity < v)
return;
dname_str(name, buf);
if(type == LDNS_RR_TYPE_TSIG) ts = "TSIG";
else if(type == LDNS_RR_TYPE_IXFR) ts = "IXFR";
else if(type == LDNS_RR_TYPE_AXFR) ts = "AXFR";
else if(type == LDNS_RR_TYPE_MAILB) ts = "MAILB";
else if(type == LDNS_RR_TYPE_MAILA) ts = "MAILA";
else if(type == LDNS_RR_TYPE_ANY) ts = "ANY";
else if(sldns_rr_descript(type) && sldns_rr_descript(type)->_name)
ts = sldns_rr_descript(type)->_name;
else {
snprintf(t, sizeof(t), "TYPE%d", (int)type);
ts = t;
}
if(sldns_lookup_by_id(sldns_rr_classes, (int)dclass) &&
sldns_lookup_by_id(sldns_rr_classes, (int)dclass)->name)
cs = sldns_lookup_by_id(sldns_rr_classes, (int)dclass)->name;
else {
snprintf(c, sizeof(c), "CLASS%d", (int)dclass);
cs = c;
}
log_info("%s %s %s %s", str, buf, ts, cs);
}
void log_name_addr(enum verbosity_value v, const char* str, uint8_t* zone,
struct sockaddr_storage* addr, socklen_t addrlen)
{
uint16_t port;
const char* family = "unknown_family ";
char namebuf[LDNS_MAX_DOMAINLEN+1];
char dest[100];
int af = (int)((struct sockaddr_in*)addr)->sin_family;
void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr;
if(verbosity < v)
return;
switch(af) {
case AF_INET: family=""; break;
case AF_INET6: family="";
sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr;
break;
case AF_LOCAL: family="local "; break;
default: break;
}
if(inet_ntop(af, sinaddr, dest, (socklen_t)sizeof(dest)) == 0) {
(void)strlcpy(dest, "(inet_ntop error)", sizeof(dest));
}
dest[sizeof(dest)-1] = 0;
port = ntohs(((struct sockaddr_in*)addr)->sin_port);
dname_str(zone, namebuf);
if(af != AF_INET && af != AF_INET6)
verbose(v, "%s <%s> %s%s#%d (addrlen %d)",
str, namebuf, family, dest, (int)port, (int)addrlen);
else verbose(v, "%s <%s> %s%s#%d",
str, namebuf, family, dest, (int)port);
}
void log_err_addr(const char* str, const char* err,
struct sockaddr_storage* addr, socklen_t addrlen)
{
uint16_t port;
char dest[100];
int af = (int)((struct sockaddr_in*)addr)->sin_family;
void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr;
if(af == AF_INET6)
sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr;
if(inet_ntop(af, sinaddr, dest, (socklen_t)sizeof(dest)) == 0) {
(void)strlcpy(dest, "(inet_ntop error)", sizeof(dest));
}
dest[sizeof(dest)-1] = 0;
port = ntohs(((struct sockaddr_in*)addr)->sin_port);
if(verbosity >= 4)
log_err("%s: %s for %s port %d (len %d)", str, err, dest,
(int)port, (int)addrlen);
else log_err("%s: %s for %s", str, err, dest);
}
int
sockaddr_cmp(struct sockaddr_storage* addr1, socklen_t len1,
struct sockaddr_storage* addr2, socklen_t len2)
{
struct sockaddr_in* p1_in = (struct sockaddr_in*)addr1;
struct sockaddr_in* p2_in = (struct sockaddr_in*)addr2;
struct sockaddr_in6* p1_in6 = (struct sockaddr_in6*)addr1;
struct sockaddr_in6* p2_in6 = (struct sockaddr_in6*)addr2;
if(len1 < len2)
return -1;
if(len1 > len2)
return 1;
log_assert(len1 == len2);
if( p1_in->sin_family < p2_in->sin_family)
return -1;
if( p1_in->sin_family > p2_in->sin_family)
return 1;
log_assert( p1_in->sin_family == p2_in->sin_family );
/* compare ip4 */
if( p1_in->sin_family == AF_INET ) {
/* just order it, ntohs not required */
if(p1_in->sin_port < p2_in->sin_port)
return -1;
if(p1_in->sin_port > p2_in->sin_port)
return 1;
log_assert(p1_in->sin_port == p2_in->sin_port);
return memcmp(&p1_in->sin_addr, &p2_in->sin_addr, INET_SIZE);
} else if (p1_in6->sin6_family == AF_INET6) {
/* just order it, ntohs not required */
if(p1_in6->sin6_port < p2_in6->sin6_port)
return -1;
if(p1_in6->sin6_port > p2_in6->sin6_port)
return 1;
log_assert(p1_in6->sin6_port == p2_in6->sin6_port);
return memcmp(&p1_in6->sin6_addr, &p2_in6->sin6_addr,
INET6_SIZE);
} else {
/* eek unknown type, perform this comparison for sanity. */
return memcmp(addr1, addr2, len1);
}
}
int
sockaddr_cmp_addr(struct sockaddr_storage* addr1, socklen_t len1,
struct sockaddr_storage* addr2, socklen_t len2)
{
struct sockaddr_in* p1_in = (struct sockaddr_in*)addr1;
struct sockaddr_in* p2_in = (struct sockaddr_in*)addr2;
struct sockaddr_in6* p1_in6 = (struct sockaddr_in6*)addr1;
struct sockaddr_in6* p2_in6 = (struct sockaddr_in6*)addr2;
if(len1 < len2)
return -1;
if(len1 > len2)
return 1;
log_assert(len1 == len2);
if( p1_in->sin_family < p2_in->sin_family)
return -1;
if( p1_in->sin_family > p2_in->sin_family)
return 1;
log_assert( p1_in->sin_family == p2_in->sin_family );
/* compare ip4 */
if( p1_in->sin_family == AF_INET ) {
return memcmp(&p1_in->sin_addr, &p2_in->sin_addr, INET_SIZE);
} else if (p1_in6->sin6_family == AF_INET6) {
return memcmp(&p1_in6->sin6_addr, &p2_in6->sin6_addr,
INET6_SIZE);
} else {
/* eek unknown type, perform this comparison for sanity. */
return memcmp(addr1, addr2, len1);
}
}
int
addr_is_ip6(struct sockaddr_storage* addr, socklen_t len)
{
if(len == (socklen_t)sizeof(struct sockaddr_in6) &&
((struct sockaddr_in6*)addr)->sin6_family == AF_INET6)
return 1;
else return 0;
}
void
addr_mask(struct sockaddr_storage* addr, socklen_t len, int net)
{
uint8_t mask[8] = {0x0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe};
int i, max;
uint8_t* s;
if(addr_is_ip6(addr, len)) {
s = (uint8_t*)&((struct sockaddr_in6*)addr)->sin6_addr;
max = 128;
} else {
s = (uint8_t*)&((struct sockaddr_in*)addr)->sin_addr;
max = 32;
}
if(net >= max)
return;
for(i=net/8+1; i<max/8; i++) {
s[i] = 0;
}
s[net/8] &= mask[net&0x7];
}
int
addr_in_common(struct sockaddr_storage* addr1, int net1,
struct sockaddr_storage* addr2, int net2, socklen_t addrlen)
{
int min = (net1<net2)?net1:net2;
int i, to;
int match = 0;
uint8_t* s1, *s2;
if(addr_is_ip6(addr1, addrlen)) {
s1 = (uint8_t*)&((struct sockaddr_in6*)addr1)->sin6_addr;
s2 = (uint8_t*)&((struct sockaddr_in6*)addr2)->sin6_addr;
to = 16;
} else {
s1 = (uint8_t*)&((struct sockaddr_in*)addr1)->sin_addr;
s2 = (uint8_t*)&((struct sockaddr_in*)addr2)->sin_addr;
to = 4;
}
/* match = bits_in_common(s1, s2, to); */
for(i=0; i<to; i++) {
if(s1[i] == s2[i]) {
match += 8;
} else {
uint8_t z = s1[i]^s2[i];
log_assert(z);
while(!(z&0x80)) {
match++;
z<<=1;
}
break;
}
}
if(match > min) match = min;
return match;
}
void
addr_to_str(struct sockaddr_storage* addr, socklen_t addrlen,
char* buf, size_t len)
{
int af = (int)((struct sockaddr_in*)addr)->sin_family;
void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr;
if(addr_is_ip6(addr, addrlen))
sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr;
if(inet_ntop(af, sinaddr, buf, (socklen_t)len) == 0) {
snprintf(buf, len, "(inet_ntop_error)");
}
}
int
addr_is_ip4mapped(struct sockaddr_storage* addr, socklen_t addrlen)
{
/* prefix for ipv4 into ipv6 mapping is ::ffff:x.x.x.x */
const uint8_t map_prefix[16] =
{0,0,0,0, 0,0,0,0, 0,0,0xff,0xff, 0,0,0,0};
uint8_t* s;
if(!addr_is_ip6(addr, addrlen))
return 0;
/* s is 16 octet ipv6 address string */
s = (uint8_t*)&((struct sockaddr_in6*)addr)->sin6_addr;
return (memcmp(s, map_prefix, 12) == 0);
}
int addr_is_broadcast(struct sockaddr_storage* addr, socklen_t addrlen)
{
int af = (int)((struct sockaddr_in*)addr)->sin_family;
void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr;
return af == AF_INET && addrlen>=(socklen_t)sizeof(struct sockaddr_in)
&& memcmp(sinaddr, "\377\377\377\377", 4) == 0;
}
int addr_is_any(struct sockaddr_storage* addr, socklen_t addrlen)
{
int af = (int)((struct sockaddr_in*)addr)->sin_family;
void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr;
void* sin6addr = &((struct sockaddr_in6*)addr)->sin6_addr;
if(af == AF_INET && addrlen>=(socklen_t)sizeof(struct sockaddr_in)
&& memcmp(sinaddr, "\000\000\000\000", 4) == 0)
return 1;
else if(af==AF_INET6 && addrlen>=(socklen_t)sizeof(struct sockaddr_in6)
&& memcmp(sin6addr, "\000\000\000\000\000\000\000\000"
"\000\000\000\000\000\000\000\000", 16) == 0)
return 1;
return 0;
}
void sock_list_insert(struct sock_list** list, struct sockaddr_storage* addr,
socklen_t len, struct regional* region)
{
struct sock_list* add = (struct sock_list*)regional_alloc(region,
sizeof(*add) - sizeof(add->addr) + (size_t)len);
if(!add) {
log_err("out of memory in socketlist insert");
return;
}
log_assert(list);
add->next = *list;
add->len = len;
*list = add;
if(len) memmove(&add->addr, addr, len);
}
void sock_list_prepend(struct sock_list** list, struct sock_list* add)
{
struct sock_list* last = add;
if(!last)
return;
while(last->next)
last = last->next;
last->next = *list;
*list = add;
}
int sock_list_find(struct sock_list* list, struct sockaddr_storage* addr,
socklen_t len)
{
while(list) {
if(len == list->len) {
if(len == 0 || sockaddr_cmp_addr(addr, len,
&list->addr, list->len) == 0)
return 1;
}
list = list->next;
}
return 0;
}
void sock_list_merge(struct sock_list** list, struct regional* region,
struct sock_list* add)
{
struct sock_list* p;
for(p=add; p; p=p->next) {
if(!sock_list_find(*list, &p->addr, p->len))
sock_list_insert(list, &p->addr, p->len, region);
}
}
void
log_crypto_err(const char* str)
{
#ifdef HAVE_SSL
/* error:[error code]:[library name]:[function name]:[reason string] */
char buf[128];
unsigned long e;
ERR_error_string_n(ERR_get_error(), buf, sizeof(buf));
log_err("%s crypto %s", str, buf);
while( (e=ERR_get_error()) ) {
ERR_error_string_n(e, buf, sizeof(buf));
log_err("and additionally crypto %s", buf);
}
#else
(void)str;
#endif /* HAVE_SSL */
}
void* listen_sslctx_create(char* key, char* pem, char* verifypem)
{
#ifdef HAVE_SSL
SSL_CTX* ctx = SSL_CTX_new(SSLv23_server_method());
if(!ctx) {
log_crypto_err("could not SSL_CTX_new");
return NULL;
}
/* no SSLv2, SSLv3 because has defects */
if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)
!= SSL_OP_NO_SSLv2){
log_crypto_err("could not set SSL_OP_NO_SSLv2");
SSL_CTX_free(ctx);
return NULL;
}
if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3) & SSL_OP_NO_SSLv3)
!= SSL_OP_NO_SSLv3){
log_crypto_err("could not set SSL_OP_NO_SSLv3");
SSL_CTX_free(ctx);
return NULL;
}
if(!SSL_CTX_use_certificate_chain_file(ctx, pem)) {
log_err("error for cert file: %s", pem);
log_crypto_err("error in SSL_CTX use_certificate_chain_file");
SSL_CTX_free(ctx);
return NULL;
}
if(!SSL_CTX_use_PrivateKey_file(ctx, key, SSL_FILETYPE_PEM)) {
log_err("error for private key file: %s", key);
log_crypto_err("Error in SSL_CTX use_PrivateKey_file");
SSL_CTX_free(ctx);
return NULL;
}
if(!SSL_CTX_check_private_key(ctx)) {
log_err("error for key file: %s", key);
log_crypto_err("Error in SSL_CTX check_private_key");
SSL_CTX_free(ctx);
return NULL;
}
#if HAVE_DECL_SSL_CTX_SET_ECDH_AUTO
if(!SSL_CTX_set_ecdh_auto(ctx,1)) {
log_crypto_err("Error in SSL_CTX_ecdh_auto, not enabling ECDHE");
}
#elif defined(USE_ECDSA)
if(1) {
EC_KEY *ecdh = EC_KEY_new_by_curve_name (NID_X9_62_prime256v1);
if (!ecdh) {
log_crypto_err("could not find p256, not enabling ECDHE");
} else {
if (1 != SSL_CTX_set_tmp_ecdh (ctx, ecdh)) {
log_crypto_err("Error in SSL_CTX_set_tmp_ecdh, not enabling ECDHE");
}
EC_KEY_free (ecdh);
}
}
#endif
if(verifypem && verifypem[0]) {
if(!SSL_CTX_load_verify_locations(ctx, verifypem, NULL)) {
log_crypto_err("Error in SSL_CTX verify locations");
SSL_CTX_free(ctx);
return NULL;
}
SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(
verifypem));
SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
}
return ctx;
#else
(void)key; (void)pem; (void)verifypem;
return NULL;
#endif
}
void* connect_sslctx_create(char* key, char* pem, char* verifypem)
{
#ifdef HAVE_SSL
SSL_CTX* ctx = SSL_CTX_new(SSLv23_client_method());
if(!ctx) {
log_crypto_err("could not allocate SSL_CTX pointer");
return NULL;
}
if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)
!= SSL_OP_NO_SSLv2) {
log_crypto_err("could not set SSL_OP_NO_SSLv2");
SSL_CTX_free(ctx);
return NULL;
}
if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3) & SSL_OP_NO_SSLv3)
!= SSL_OP_NO_SSLv3) {
log_crypto_err("could not set SSL_OP_NO_SSLv3");
SSL_CTX_free(ctx);
return NULL;
}
if(key && key[0]) {
if(!SSL_CTX_use_certificate_chain_file(ctx, pem)) {
log_err("error in client certificate %s", pem);
log_crypto_err("error in certificate file");
SSL_CTX_free(ctx);
return NULL;
}
if(!SSL_CTX_use_PrivateKey_file(ctx, key, SSL_FILETYPE_PEM)) {
log_err("error in client private key %s", key);
log_crypto_err("error in key file");
SSL_CTX_free(ctx);
return NULL;
}
if(!SSL_CTX_check_private_key(ctx)) {
log_err("error in client key %s", key);
log_crypto_err("error in SSL_CTX_check_private_key");
SSL_CTX_free(ctx);
return NULL;
}
}
if(verifypem && verifypem[0]) {
if(!SSL_CTX_load_verify_locations(ctx, verifypem, NULL)) {
log_crypto_err("error in SSL_CTX verify");
SSL_CTX_free(ctx);
return NULL;
}
SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
}
return ctx;
#else
(void)key; (void)pem; (void)verifypem;
return NULL;
#endif
}
void* incoming_ssl_fd(void* sslctx, int fd)
{
#ifdef HAVE_SSL
SSL* ssl = SSL_new((SSL_CTX*)sslctx);
if(!ssl) {
log_crypto_err("could not SSL_new");
return NULL;
}
SSL_set_accept_state(ssl);
(void)SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);
if(!SSL_set_fd(ssl, fd)) {
log_crypto_err("could not SSL_set_fd");
SSL_free(ssl);
return NULL;
}
return ssl;
#else
(void)sslctx; (void)fd;
return NULL;
#endif
}
void* outgoing_ssl_fd(void* sslctx, int fd)
{
#ifdef HAVE_SSL
SSL* ssl = SSL_new((SSL_CTX*)sslctx);
if(!ssl) {
log_crypto_err("could not SSL_new");
return NULL;
}
SSL_set_connect_state(ssl);
(void)SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);
if(!SSL_set_fd(ssl, fd)) {
log_crypto_err("could not SSL_set_fd");
SSL_free(ssl);
return NULL;
}
return ssl;
#else
(void)sslctx; (void)fd;
return NULL;
#endif
}
#if defined(HAVE_SSL) && defined(OPENSSL_THREADS) && !defined(THREADS_DISABLED) && defined(CRYPTO_LOCK) && OPENSSL_VERSION_NUMBER < 0x10100000L
/** global lock list for openssl locks */
static lock_basic_type *ub_openssl_locks = NULL;
/** callback that gets thread id for openssl */
static unsigned long
ub_crypto_id_cb(void)
{
return (unsigned long)log_thread_get();
}
static void
ub_crypto_lock_cb(int mode, int type, const char *ATTR_UNUSED(file),
int ATTR_UNUSED(line))
{
if((mode&CRYPTO_LOCK)) {
lock_basic_lock(&ub_openssl_locks[type]);
} else {
lock_basic_unlock(&ub_openssl_locks[type]);
}
}
#endif /* OPENSSL_THREADS */
int ub_openssl_lock_init(void)
{
#if defined(HAVE_SSL) && defined(OPENSSL_THREADS) && !defined(THREADS_DISABLED) && defined(CRYPTO_LOCK) && OPENSSL_VERSION_NUMBER < 0x10100000L
int i;
ub_openssl_locks = (lock_basic_type*)reallocarray(
NULL, (size_t)CRYPTO_num_locks(), sizeof(lock_basic_type));
if(!ub_openssl_locks)
return 0;
for(i=0; i<CRYPTO_num_locks(); i++) {
lock_basic_init(&ub_openssl_locks[i]);
}
CRYPTO_set_id_callback(&ub_crypto_id_cb);
CRYPTO_set_locking_callback(&ub_crypto_lock_cb);
#endif /* OPENSSL_THREADS */
return 1;
}
void ub_openssl_lock_delete(void)
{
#if defined(HAVE_SSL) && defined(OPENSSL_THREADS) && !defined(THREADS_DISABLED) && defined(CRYPTO_LOCK) && OPENSSL_VERSION_NUMBER < 0x10100000L
int i;
if(!ub_openssl_locks)
return;
CRYPTO_set_id_callback(NULL);
CRYPTO_set_locking_callback(NULL);
for(i=0; i<CRYPTO_num_locks(); i++) {
lock_basic_destroy(&ub_openssl_locks[i]);
}
free(ub_openssl_locks);
#endif /* OPENSSL_THREADS */
}
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