Taint: internal documentation

[users/jgh/exim.git] / src / src / tlscert-openssl.c

diff --git a/src/src/tlscert-openssl.c b/src/src/tlscert-openssl.c
index f9808b3542435f68d50326aba26f9792022b51a9..403dc4236c89975f8b63032fabe91b8bb54cd80d 100644 (file)
--- a/src/src/tlscert-openssl.c
+++ b/src/src/tlscert-openssl.c
@@ -33,12 +33,14 @@ library. It is #included into the tls.c file when that library is used.
 
 /*****************************************************
 *  Export/import a certificate, binary/printable
-*****************************************************/
-int
+******************************************************
+Return booolean success
+*/
+BOOL
 tls_export_cert(uschar * buf, size_t buflen, void * cert)
 {
 BIO * bp = BIO_new(BIO_s_mem());
-int fail;
+BOOL fail;
 
 if ((fail = PEM_write_bio_X509(bp, (X509 *)cert) ? 0 : 1))
   log_write(0, LOG_MAIN, "TLS error in certificate export: %s",
@@ -59,32 +61,29 @@ else
   }
 
 BIO_free(bp);
-return fail;
+return !fail;
 }
 
-int
+/* On error, NULL out the destination */
+BOOL
 tls_import_cert(const uschar * buf, void ** cert)
 {
-void * reset_point = store_get(0);
+rmark reset_point = store_mark();
 const uschar * cp = string_unprinting(US buf);
 BIO * bp;
 X509 * x = *(X509 **)cert;
-int fail = 0;
 
 if (x) X509_free(x);
 
 bp = BIO_new_mem_buf(US cp, -1);
 if (!(x = PEM_read_bio_X509(bp, NULL, 0, NULL)))
-  {
   log_write(0, LOG_MAIN, "TLS error in certificate import: %s",
     ERR_error_string(ERR_get_error(), NULL));
-  fail = 1;
-  }
-else
-  *cert = (void *)x;
+
+*cert = (void *)x;
 BIO_free(bp);
 store_reset(reset_point);
-return fail;
+return !!x;
 }
 
 void
@@ -172,7 +171,7 @@ else
 
       /* convert to string in our format */
       len = 32;
-      s = store_get(len);
+      s = store_get(len, FALSE);
       strftime(CS s, (size_t)len, "%b %e %T %Y %z", tm_p);
       }
     }
@@ -336,7 +335,7 @@ M_ASN1_OCTET_STRING_print(bp, adata);
 /* binary data, DER encoded */
 /* just dump for now */
 len = BIO_get_mem_data(bp, &cp1);
-cp3 = cp2 = store_get(len*3+1);
+cp3 = cp2 = store_get(len*3+1, TRUE);
 
 while(len)
   {
@@ -503,7 +502,7 @@ if (!X509_digest(cert,fdig,md,&n))
   expand_string_message = US"tls_cert_fprt: out of mem\n";
   return NULL;
   }
-cp = store_get(n*2+1);
+cp = store_get(n*2+1, TRUE);
 for (int j = 0; j < (int)n; j++) sprintf(CS cp+2*j, "%02X", md[j]);
 return(cp);
 }