[tor-bugs] #16251 [Tor]: Tor does not recognise libressl version and fails to compile on OpenBSD 5.6
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Sun May 31 15:38:44 UTC 2015
#16251: Tor does not recognise libressl version and fails to compile on OpenBSD 5.6
----------------------+----------------------------------
Reporter: cwk | Owner:
Type: defect | Status: new
Priority: normal | Milestone:
Component: Tor | Version: Tor: unspecified
Keywords: libressl | Actual Points:
Parent ID: | Points:
----------------------+----------------------------------
Compiling tor from git returns:
{{{src/common/tortls.c:1451: undefined reference to `SSL_CIPHER_find'}}}
Latest commit on the git repo is, for reference:
{{{90e07ab338cd59caeaeb31a3d207bb34d433b8ab}}}
User 'mancha' on #tor helped me pin the problem. They supplied the
following source code to test the SSL version currently in use:
{{{#include <stdio.h>
#include <openssl/crypto.h>
#define OPENSSL_VER(a,b,c,d,e) \
(((a)<<28) | \
((b)<<20) | \
((c)<<12) | \
((d)<< 4) | \
(e))
#define OPENSSL_V_SERIES(a,b,c) OPENSSL_VER((a),(b),(c),0,0)
int main()
{
printf("OPENSSL_VERSION_NUMBER : %x\n", OPENSSL_VERSION_NUMBER);
printf("OPENSSL_V_SERIES(1,0,2): %x\n", OPENSSL_V_SERIES(1,0,2));
return 0;
}
}}}
Compiling with {{{cc -o foo foo.c -lcrypto}}} returns:
{{{
OPENSSL_VERSION_NUMBER : 20000000
OPENSSL_V_SERIES(1,0,2): 10002000
}}}
Mancha also suggested the following patch:
{{{
--- a/src/common/tortls.c
+++ b/src/common/tortls.c
@@ -1440,7 +1440,7 @@ static int
find_cipher_by_id(const SSL *ssl, const SSL_METHOD *m, uint16_t cipher)
{
const SSL_CIPHER *c;
-#if OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,0,2)
+#if 0
{
unsigned char cipherid[3];
tor_assert(ssl);
}}}
Applying the patch makes tor compile successfully.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16251>
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