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MD5: OOM fix

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check whether md5 initialization succeeded before updating digest of
buffers onto it
This commit is contained in:
Gokhan Sengun
2012-05-02 23:34:45 +03:00
committed by Daniel Stenberg
parent 6f998400d9
commit d6773834f2
1 changed files with 12 additions and 0 deletions
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12
lib/smtp.c
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@@ -933,6 +933,9 @@ static CURLcode smtp_state_authdigest_resp(struct connectdata *conn,
/* So far so good, now calculate A1 and H(A1) according to RFC 2831 */
ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
if(!ctxt)
return CURLE_OUT_OF_MEMORY;
Curl_MD5_update(ctxt, (const unsigned char *) conn->user,
curlx_uztoui(strlen(conn->user)));
Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
@@ -944,6 +947,9 @@ static CURLcode smtp_state_authdigest_resp(struct connectdata *conn,
Curl_MD5_final(ctxt, digest);
ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
if(!ctxt)
return CURLE_OUT_OF_MEMORY;
Curl_MD5_update(ctxt, (const unsigned char *) digest, MD5_DIGEST_LEN);
Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
Curl_MD5_update(ctxt, (const unsigned char *) nonce,
@@ -962,6 +968,9 @@ static CURLcode smtp_state_authdigest_resp(struct connectdata *conn,
/* Calculate H(A2) */
ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
if(!ctxt)
return CURLE_OUT_OF_MEMORY;
Curl_MD5_update(ctxt, (const unsigned char *) method,
curlx_uztoui(strlen(method)));
Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
@@ -974,6 +983,9 @@ static CURLcode smtp_state_authdigest_resp(struct connectdata *conn,
/* Now calculate the response hash */
ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
if(!ctxt)
return CURLE_OUT_OF_MEMORY;
Curl_MD5_update(ctxt, (const unsigned char *) HA1_hex, 2 * MD5_DIGEST_LEN);
Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
Curl_MD5_update(ctxt, (const unsigned char *) nonce,