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Author: Vaclav Dolezal <vdolezal@redhat.com>
Date: Mon Aug 12 14:51:39 2019 +0200
Use functions from OpenSSL for HMAC, MD5 and random bytes
diff --git a/bacula/src/dird/dird_conf.c b/bacula/src/dird/dird_conf.c
index 02fae0bab..dff241356 100644
--- a/bacula/src/dird/dird_conf.c
+++ b/bacula/src/dird/dird_conf.c
@@ -42,6 +42,10 @@
#include "bacula.h"
#include "dird.h"
+#if HAVE_OPENSSL
+# include <openssl/evp.h>
+#endif
+
/* Define the first and last resource ID record
* types. Note, these should be unique for each
* daemon though not a requirement.
@@ -1645,6 +1649,11 @@ void free_resource(RES *rres, int type)
free(res->res_fs.exclude_items);
}
res->res_fs.num_excludes = 0;
+#if HAVE_OPENSSL
+ EVP_MD_CTX_free(res->res_fs.md5c);
+ res->res_fs.md5c = NULL;
+ res->res_fs.have_MD5 = false;
+#endif
break;
case R_POOL:
if (res->res_pool.pool_type) {
diff --git a/bacula/src/dird/dird_conf.h b/bacula/src/dird/dird_conf.h
index 5174a7a14..4e910c5bd 100644
--- a/bacula/src/dird/dird_conf.h
+++ b/bacula/src/dird/dird_conf.h
@@ -24,6 +24,10 @@
/* NOTE: #includes at the end of this file */
+#if HAVE_OPENSSL
+# include <openssl/evp.h>
+#endif
+
/*
* Resource codes -- they must be sequential for indexing
*/
@@ -591,7 +595,11 @@ public:
INCEXE **exclude_items;
int32_t num_excludes;
bool have_MD5; /* set if MD5 initialized */
+#if HAVE_OPENSSL
+ EVP_MD_CTX *md5c; /* MD5 of include/exclude */
+#else
struct MD5Context md5c; /* MD5 of include/exclude */
+#endif
char MD5[30]; /* base 64 representation of MD5 */
bool ignore_fs_changes; /* Don't force Full if FS changed */
bool enable_vss; /* Enable Volume Shadow Copy */
diff --git a/bacula/src/dird/inc_conf.c b/bacula/src/dird/inc_conf.c
index 3f4fbf55e..64b422242 100644
--- a/bacula/src/dird/inc_conf.c
+++ b/bacula/src/dird/inc_conf.c
@@ -32,6 +32,10 @@
#include <regex.h>
#endif
+#if HAVE_OPENSSL
+# include <openssl/evp.h>
+#endif
+
/* Forward referenced subroutines */
void store_inc(LEX *lc, RES_ITEM *item, int index, int pass);
@@ -354,7 +358,17 @@ static void store_newinc(LEX *lc, RES_ITEM *item, int index, int pass)
bool options;
if (!res_all.res_fs.have_MD5) {
+#if HAVE_OPENSSL
+ res_all.res_fs.md5c = EVP_MD_CTX_new();
+ if (!res_all.res_fs.md5c
+ || !EVP_DigestInit_ex(res_all.res_fs.md5c, EVP_md5(), NULL)
+ ) {
+ Emsg1(M_ERROR_TERM, 0, "MD5 computation failed: %s\n",
+ ERR_reason_error_string(ERR_peek_last_error()));
+ }
+#else
MD5Init(&res_all.res_fs.md5c);
+#endif
res_all.res_fs.have_MD5 = true;
}
memset(&res_incexe, 0, sizeof(INCEXE));
@@ -620,7 +634,13 @@ static void store_fname(LEX *lc, RES_ITEM2 *item, int index, int pass, bool excl
}
case T_QUOTED_STRING:
if (res_all.res_fs.have_MD5) {
+#if HAVE_OPENSSL
+ if (!EVP_DigestUpdate(res_all.res_fs.md5c, (void *)lc->str, (size_t) lc->str_len))
+ Emsg1(M_ERROR_TERM, 0, "MD5 computation failed: %s\n",
+ ERR_reason_error_string(ERR_peek_last_error()));
+#else
MD5Update(&res_all.res_fs.md5c, (unsigned char *)lc->str, lc->str_len);
+#endif
}
incexe = &res_incexe;
if (incexe->name_list.size() == 0) {
@@ -663,7 +683,13 @@ static void store_plugin_name(LEX *lc, RES_ITEM2 *item, int index, int pass, boo
}
case T_QUOTED_STRING:
if (res_all.res_fs.have_MD5) {
+#if HAVE_OPENSSL
+ if (!EVP_DigestUpdate(res_all.res_fs.md5c, (void *)lc->str, (size_t) lc->str_len))
+ Emsg1(M_ERROR_TERM, 0, "MD5 computation failed: %s\n",
+ ERR_reason_error_string(ERR_peek_last_error()));
+#else
MD5Update(&res_all.res_fs.md5c, (unsigned char *)lc->str, lc->str_len);
+#endif
}
incexe = &res_incexe;
if (incexe->plugin_list.size() == 0) {
diff --git a/bacula/src/dird/job.c b/bacula/src/dird/job.c
index b5b39c7d5..7d69f0157 100644
--- a/bacula/src/dird/job.c
+++ b/bacula/src/dird/job.c
@@ -25,6 +25,10 @@
#include "bacula.h"
#include "dird.h"
+#if HAVE_OPENSSL
+# include <openssl/evp.h>
+#endif
+
/* Forward referenced subroutines */
static void *job_thread(void *arg);
static void job_monitor_watchdog(watchdog_t *self);
@@ -1308,10 +1312,27 @@ bool get_or_create_fileset_record(JCR *jcr)
memset(&fsr, 0, sizeof(FILESET_DBR));
bstrncpy(fsr.FileSet, jcr->fileset->hdr.name, sizeof(fsr.FileSet));
if (jcr->fileset->have_MD5) {
+#if HAVE_OPENSSL
+ EVP_MD_CTX *mdctx = EVP_MD_CTX_new();
+ if (!mdctx)
+ Emsg1(M_ERROR_TERM, 0, "MD5 computation failed: %s\n",
+ ERR_reason_error_string(ERR_peek_last_error()));
+#else
struct MD5Context md5c;
+#endif
unsigned char digest[MD5HashSize];
+#if HAVE_OPENSSL
+ if (!EVP_MD_CTX_copy_ex(mdctx, jcr->fileset->md5c)
+ || !EVP_DigestFinal_ex(mdctx, digest, NULL)
+ ) {
+ Emsg1(M_ERROR_TERM, 0, "MD5 computation failed: %s\n",
+ ERR_reason_error_string(ERR_peek_last_error()));
+ }
+ EVP_MD_CTX_free(mdctx);
+#else
memcpy(&md5c, &jcr->fileset->md5c, sizeof(md5c));
MD5Final(digest, &md5c);
+#endif
/*
* Keep the flag (last arg) set to false otherwise old FileSets will
* get new MD5 sums and the user will get Full backups on everything
diff --git a/bacula/src/lib/hmac.c b/bacula/src/lib/hmac.c
index a8d5e3dc0..dc3b78383 100644
--- a/bacula/src/lib/hmac.c
+++ b/bacula/src/lib/hmac.c
@@ -26,6 +26,10 @@
*/
#include "bacula.h"
+#if HAVE_OPENSSL
+# include <openssl/hmac.h>
+#endif
+
#define PAD_LEN 64 /* PAD length */
#define SIG_LEN MD5HashSize /* MD5 digest length */
@@ -36,6 +40,19 @@ hmac_md5(
uint8_t* key, /* pointer to authentication key */
int key_len, /* length of authentication key */
uint8_t *hmac) /* returned hmac-md5 */
+#if HAVE_OPENSSL
+{
+ if (!HMAC(
+ EVP_md5(),
+ key, key_len,
+ text, text_len,
+ hmac, NULL
+ )) {
+ Emsg0(M_ERROR_TERM, 0, "HMAC computation failed\n");
+ }
+
+}
+#else
{
MD5Context md5c;
uint8_t k_ipad[PAD_LEN]; /* inner padding - key XORd with ipad */
@@ -90,6 +107,7 @@ hmac_md5(
MD5Update(&md5c, hmac, SIG_LEN); /* hash inner hash */
MD5Final(hmac, &md5c); /* store results */
}
+#endif
/*
Test Vectors (Trailing '\0' of a character string not included in test):
diff --git a/bacula/src/lib/parse_conf.c b/bacula/src/lib/parse_conf.c
index cb3573fbd..3f3f93fdc 100644
--- a/bacula/src/lib/parse_conf.c
+++ b/bacula/src/lib/parse_conf.c
@@ -59,6 +59,10 @@
#define MAX_PATH 1024
#endif
+#if HAVE_OPENSSL
+# include <openssl/evp.h>
+#endif
+
/*
* Define the Union of all the common resource structure definitions.
*/
@@ -538,7 +542,11 @@ void store_dir(LEX *lc, RES_ITEM *item, int index, int pass)
void store_password(LEX *lc, RES_ITEM *item, int index, int pass)
{
unsigned int i, j;
+#if HAVE_OPENSSL
+ EVP_MD_CTX *mdctx = NULL;
+#else
struct MD5Context md5c;
+#endif
unsigned char digest[CRYPTO_DIGEST_MD5_SIZE];
char sig[100];
@@ -548,9 +556,21 @@ void store_password(LEX *lc, RES_ITEM *item, int index, int pass)
} else {
lex_get_token(lc, T_STRING);
if (pass == 1) {
+#if HAVE_OPENSSL
+ mdctx = EVP_MD_CTX_new();
+ if (!mdctx
+ || !EVP_DigestInit_ex(mdctx, EVP_md5(), NULL)
+ || !EVP_DigestUpdate(mdctx, (const void *) lc->str, (size_t) lc->str_len)
+ || !EVP_DigestFinal_ex(mdctx, digest, NULL)
+ ) {
+ Emsg1(M_ERROR_TERM, 0, "MD5 computation failed: %s\n",
+ ERR_reason_error_string(ERR_peek_last_error()));
+ }
+#else
MD5Init(&md5c);
MD5Update(&md5c, (unsigned char *) (lc->str), lc->str_len);
MD5Final(digest, &md5c);
+#endif
for (i = j = 0; i < sizeof(digest); i++) {
sprintf(&sig[j], "%02x", digest[i]);
j += 2;
diff --git a/bacula/src/lib/util.c b/bacula/src/lib/util.c
index 2c425aa4c..e82b907d8 100644
--- a/bacula/src/lib/util.c
+++ b/bacula/src/lib/util.c
@@ -707,6 +707,35 @@ int do_shell_expansion(char *name, int name_len)
from SpeakFreely by John Walker */
void make_session_key(char *key, char *seed, int mode)
+#if HAVE_OPENSSL
+{
+ int j, k;
+ unsigned char buf[16];
+
+ (void) seed;
+
+ if (!RAND_bytes(buf, sizeof(buf)))
+ Emsg1(M_ERROR_TERM, 0, "Random bytes generation failed: %s\n",
+ ERR_reason_error_string(ERR_peek_last_error()));
+
+ if (mode) {
+ for (j = k = 0; j < 16; j++) {
+ unsigned char rb = buf[j];
+
+#define Rad16(x) ((x) + 'A')
+ key[k++] = Rad16((rb >> 4) & 0xF);
+ key[k++] = Rad16(rb & 0xF);
+#undef Rad16
+ if (j & 1) {
+ key[k++] = '-';
+ }
+ }
+ key[--k] = 0;
+ } else {
+ memcpy(key, buf, sizeof(buf));
+ }
+}
+#else
{
int j, k;
struct MD5Context md5c;
@@ -790,6 +819,7 @@ void make_session_key(char *key, char *seed, int mode)
}
}
#undef nextrand
+#endif
void encode_session_key(char *encode, char *session, char *key, int maxlen)
{
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