From 189a4d74c07aeb58f990fd27133a2caf0e7df176 Mon Sep 17 00:00:00 2001
From: Jacob Barthelmeh <jacob@wolfssl.com>
Date: Thu, 27 Apr 2017 11:03:07 -0600
Subject: [PATCH] implement get error line data function

---
 src/ssl.c   | 28 +++++++++++++++++++---------
 tests/api.c |  5 +++++
 2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/src/ssl.c b/src/ssl.c
index 3df58aa42..2bfa76695 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -14674,20 +14674,30 @@ int wolfSSL_EVP_MD_type(const WOLFSSL_EVP_MD *md)
     }
 
 
-    #ifndef NO_WOLFSSL_STUB
+    /* Similar to wolfSSL_ERR_get_error_line but takes in a flags argument for
+     * more flexability.
+     *
+     * file  output pointer to file where error happened
+     * line  output to line number of error
+     * data  output data. Is a string if ERR_TXT_STRING flag is used
+     * flags bit flag to adjust data output
+     *
+     * Returns the error value
+     */
     unsigned long wolfSSL_ERR_get_error_line_data(const char** file, int* line,
                                                   const char** data, int *flags)
     {
-        /* Not implemented */
-        (void)file;
-        (void)line;
-        (void)data;
-        (void)flags;
-        WOLFSSL_STUB("ERR_get_error_line_data");
+        WOLFSSL_STUB("wolfSSL_ERR_get_error_line_data");
 
-        return 0;
+        if (flags != NULL) {
+            if ((*flags & ERR_TXT_STRING) == ERR_TXT_STRING) {
+                return wc_PullErrorNode(file, data, line);
+            }
+        }
+
+        return wc_PullErrorNode(file, NULL, line);
     }
-    #endif
+
 
     WOLFSSL_API pem_password_cb* wolfSSL_CTX_get_default_passwd_cb(
                                                                WOLFSSL_CTX *ctx)
diff --git a/tests/api.c b/tests/api.c
index 918bf5541..690778740 100644
--- a/tests/api.c
+++ b/tests/api.c
@@ -14236,7 +14236,9 @@ static void test_wolfSSL_ERR_peek_last_error_line(void)
     callback_functions client_cb;
     callback_functions server_cb;
     int         line = 0;
+    int         flag = ERR_TXT_STRING;
     const char* file = NULL;
+    const char* data = NULL;
 
     printf(testingFmt, "wolfSSL_ERR_peek_last_error_line()");
 
@@ -14269,6 +14271,9 @@ static void test_wolfSSL_ERR_peek_last_error_line(void)
 
     FreeTcpReady(&ready);
 
+    AssertIntGT(ERR_get_error_line_data(NULL, NULL, &data, &flag), 0);
+    AssertNotNull(data);
+
     /* check clearing error state */
     ERR_remove_state(0);
     AssertIntEQ((int)ERR_peek_last_error_line(NULL, NULL), 0);