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darwinssl: Fixed inability to disable peer verification

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... on Snow Leopard and Lion

Snow Leopard introduced the SSLSetSessionOption() function, but it
doesn't disable peer verification as expected on Snow Leopard or
Lion (it works as expected in Mountain Lion). So we now use sysctl()
to detect whether or not the user is using Snow Leopard or Lion,
and if that's the case, then we now use the deprecated
SSLSetEnableCertVerify() function instead to disable peer verification.
This commit is contained in:
Nick Zitzmann 2012-12-26 17:29:50 -08:00 committed by Daniel Stenberg
parent 311151beab
commit e3ed2b82e6
1 changed files with 46 additions and 1 deletions
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47
lib/curl_darwinssl.c
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@ -38,6 +38,9 @@
#include <Security/SecureTransport.h>
#include <CoreFoundation/CoreFoundation.h>
#include <CommonCrypto/CommonDigest.h>
#if (TARGET_OS_MAC && !(TARGET_OS_EMBEDDED || TARGET_OS_IPHONE))
#include <sys/sysctl.h>
#endif
#include "urldata.h"
#include "sendf.h"
@ -623,6 +626,41 @@ CF_INLINE const char *TLSCipherNameForNumber(SSLCipherSuite cipher) {
return "TLS_NULL_WITH_NULL_NULL";
}
CF_INLINE bool IsRunningMountainLionOrLater(void)
{
#if (TARGET_OS_MAC && !(TARGET_OS_EMBEDDED || TARGET_OS_IPHONE))
int mib[2];
char *os_version;
size_t os_version_len;
char *os_version_major/*, *os_version_minor, *os_version_point*/;
int os_version_major_int;
/* Get the Darwin kernel version from the kernel using sysctl(): */
mib[0] = CTL_KERN;
mib[1] = KERN_OSRELEASE;
if(sysctl(mib, 2, NULL, &os_version_len, NULL, 0) == -1)
return false;
os_version = malloc(os_version_len*sizeof(char));
if(!os_version)
return false;
if(sysctl(mib, 2, os_version, &os_version_len, NULL, 0) == -1) {
free(os_version);
return false;
}
/* Parse the version. If it's version 12.0.0 or later, then this user is
using Mountain Lion. */
os_version_major = strtok(os_version, ".");
/*os_version_minor = strtok(NULL, ".");
os_version_point = strtok(NULL, ".");*/
os_version_major_int = atoi(os_version_major);
free(os_version);
return os_version_major_int >= 12;
#else
return true; /* iOS users: this doesn't concern you */
#endif
}
static CURLcode darwinssl_connect_step1(struct connectdata *conn,
int sockindex)
{
@ -772,7 +810,14 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
* anyway. In the latter case the result of the verification is checked with
* SSL_get_verify_result() below. */
#if defined(__MAC_10_6) || defined(__IPHONE_5_0)
if(SSLSetSessionOption != NULL) {
/* Snow Leopard introduced the SSLSetSessionOption() function, but due to
a library bug with the way the kSSLSessionOptionBreakOnServerAuth flag
works, it doesn't work as expected under Snow Leopard or Lion.
So we need to call SSLSetEnableCertVerify() on those older cats in order
to disable certificate validation if the user turned that off.
(SecureTransport will always validate the certificate chain by
default.) */
if(SSLSetSessionOption != NULL && IsRunningMountainLionOrLater()) {
err = SSLSetSessionOption(connssl->ssl_ctx,
kSSLSessionOptionBreakOnServerAuth,
data->set.ssl.verifypeer?false:true);