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nuke home-grown CRAM-MD5 support

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it was obsoleted by SASL support.
i deem the additional dependency acceptable when one wants the feature.
This commit is contained in:
Oswald Buddenhagen 2014-07-27 18:41:22 +02:00
parent eb1005151c
commit 7ee0483436
2 changed files with 0 additions and 96 deletions
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41
src/drv_imap.c
View File

@ -1454,28 +1454,6 @@ imap_cleanup_p2( imap_store_t *ctx,
/******************* imap_open_store *******************/
#ifdef HAVE_LIBSSL
static int
do_cram_auth( imap_store_t *ctx, struct imap_cmd *cmdp, const char *prompt )
{
imap_server_conf_t *srvc = ((imap_store_conf_t *)ctx->gen.conf)->server;
char *resp;
int l;
cmdp->param.cont = 0;
cram( prompt, srvc->user, srvc->pass, &resp, &l );
if (DFlags & VERBOSE) {
printf( "%s>+> %s\n", ctx->label, resp );
fflush( stdout );
}
if (socket_write( &ctx->conn, resp, l, GiveOwn ) < 0)
return -1;
return socket_write( &ctx->conn, "\r\n", 2, KeepOwn );
}
#endif
static void imap_open_store_connected( int, void * );
#ifdef HAVE_LIBSSL
static void imap_open_store_tlsstarted1( int, void * );
@ -1888,9 +1866,6 @@ imap_open_store_authenticate2( imap_store_t *ctx )
imap_store_conf_t *cfg = (imap_store_conf_t *)ctx->gen.conf;
imap_server_conf_t *srvc = cfg->server;
string_list_t *mech, *cmech;
#ifdef HAVE_LIBSSL
int auth_cram = 0;
#endif
int auth_login = 0;
#ifdef HAVE_LIBSASL
char saslmechs[1024], *saslend = saslmechs;
@ -1906,10 +1881,6 @@ imap_open_store_authenticate2( imap_store_t *ctx )
if (ctx->conn.ssl || !any)
#endif
auth_login = 1;
#ifdef HAVE_LIBSSL
} else if (!strcasecmp( cmech->string, "CRAM-MD5" )) {
auth_cram = 1;
#endif
} else {
#ifdef HAVE_LIBSASL
int len = strlen( cmech->string );
@ -1974,18 +1945,6 @@ imap_open_store_authenticate2( imap_store_t *ctx )
free( enc );
return;
}
#endif
#ifdef HAVE_LIBSSL
if (auth_cram) {
struct imap_cmd *cmd = new_imap_cmd( sizeof(*cmd) );
if (!ensure_user( srvc ) || !ensure_password( srvc ))
goto bail;
info( "Authenticating with CRAM-MD5...\n" );
cmd->param.cont = do_cram_auth;
imap_exec( ctx, cmd, imap_open_store_authenticate2_p2, "AUTHENTICATE CRAM-MD5" );
return;
}
#endif
if (auth_login) {
if (!ensure_user( srvc ) || !ensure_password( srvc ))

55
src/socket.c
View File

@ -717,58 +717,3 @@ socket_fd_cb( int events, void *aux )
if (events & POLLIN)
socket_fill( conn );
}
#ifdef HAVE_LIBSSL
/* this isn't strictly socket code, but let's have all OpenSSL use in one file. */
#define ENCODED_SIZE(n) (4*((n+2)/3))
static char
hexchar( unsigned int b )
{
if (b < 10)
return '0' + b;
return 'a' + (b - 10);
}
void
cram( const char *challenge, const char *user, const char *pass, char **_final, int *_finallen )
{
char *response, *final;
unsigned hashlen;
int i, clen, blen, flen, olen;
unsigned char hash[16];
char buf[256], hex[33];
HMAC_CTX hmac;
HMAC_Init( &hmac, (unsigned char *)pass, strlen( pass ), EVP_md5() );
clen = strlen( challenge );
/* response will always be smaller than challenge because we are decoding. */
response = nfcalloc( 1 + clen );
EVP_DecodeBlock( (unsigned char *)response, (unsigned char *)challenge, clen );
HMAC_Update( &hmac, (unsigned char *)response, strlen( response ) );
free( response );
hashlen = sizeof(hash);
HMAC_Final( &hmac, hash, &hashlen );
assert( hashlen == sizeof(hash) );
hex[32] = 0;
for (i = 0; i < 16; i++) {
hex[2 * i] = hexchar( (hash[i] >> 4) & 0xf );
hex[2 * i + 1] = hexchar( hash[i] & 0xf );
}
blen = nfsnprintf( buf, sizeof(buf), "%s %s", user, hex );
flen = ENCODED_SIZE( blen );
final = nfmalloc( flen + 1 );
final[flen] = 0;
olen = EVP_EncodeBlock( (unsigned char *)final, (unsigned char *)buf, blen );
assert( olen == flen );
*_final = final;
*_finallen = flen;
}
#endif