X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fui%2Fui_lib.c;h=139485dcd1548555af8f7ede5989fa8bb65d948c;hp=e48e4add1de355d875b4de9d80e4b81fd5ddacbd;hb=28428130db13fe5d1b956a622747db2e0e0b1458;hpb=076fc55527a1499391fa6de109c8387895199ee9

diff --git a/crypto/ui/ui_lib.c b/crypto/ui/ui_lib.c
index e48e4add1d..139485dcd1 100644
--- a/crypto/ui/ui_lib.c
+++ b/crypto/ui/ui_lib.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -17,7 +17,7 @@
 
 UI *UI_new(void)
 {
-    return (UI_new_method(NULL));
+    return UI_new_method(NULL);
 }
 
 UI *UI_new_method(const UI_METHOD *method)
@@ -37,9 +37,10 @@ UI *UI_new_method(const UI_METHOD *method)
     }
 
     if (method == NULL)
-        ret->meth = UI_get_default_method();
-    else
-        ret->meth = method;
+        method = UI_get_default_method();
+    if (method == NULL)
+        method = UI_null();
+    ret->meth = method;
 
     if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_UI, ret, &ret->ex_data)) {
         OPENSSL_free(ret);
@@ -73,6 +74,9 @@ void UI_free(UI *ui)
 {
     if (ui == NULL)
         return;
+    if ((ui->flags & UI_FLAG_DUPL_DATA) != 0) {
+        ui->meth->ui_destroy_data(ui, ui->user_data);
+    }
     sk_UI_STRING_pop_free(ui->strings, free_string);
     CRYPTO_free_ex_data(CRYPTO_EX_INDEX_UI, ui, &ui->ex_data);
     CRYPTO_THREAD_lock_free(ui->lock);
@@ -370,9 +374,10 @@ char *UI_construct_prompt(UI *ui, const char *object_desc,
             len += sizeof(prompt2) - 1 + strlen(object_name);
         len += sizeof(prompt3) - 1;
 
-        prompt = OPENSSL_malloc(len + 1);
-        if (prompt == NULL)
+        if ((prompt = OPENSSL_malloc(len + 1)) == NULL) {
+            UIerr(UI_F_UI_CONSTRUCT_PROMPT, ERR_R_MALLOC_FAILURE);
             return NULL;
+        }
         OPENSSL_strlcpy(prompt, prompt1, len + 1);
         OPENSSL_strlcat(prompt, object_desc, len + 1);
         if (object_name != NULL) {
@@ -387,10 +392,38 @@ char *UI_construct_prompt(UI *ui, const char *object_desc,
 void *UI_add_user_data(UI *ui, void *user_data)
 {
     void *old_data = ui->user_data;
+
+    if ((ui->flags & UI_FLAG_DUPL_DATA) != 0) {
+        ui->meth->ui_destroy_data(ui, old_data);
+        old_data = NULL;
+    }
     ui->user_data = user_data;
+    ui->flags &= ~UI_FLAG_DUPL_DATA;
     return old_data;
 }
 
+int UI_dup_user_data(UI *ui, void *user_data)
+{
+    void *duplicate = NULL;
+
+    if (ui->meth->ui_duplicate_data == NULL
+        || ui->meth->ui_destroy_data == NULL) {
+        UIerr(UI_F_UI_DUP_USER_DATA, UI_R_USER_DATA_DUPLICATION_UNSUPPORTED);
+        return -1;
+    }
+
+    duplicate = ui->meth->ui_duplicate_data(ui, user_data);
+    if (duplicate == NULL) {
+        UIerr(UI_F_UI_DUP_USER_DATA, ERR_R_MALLOC_FAILURE);
+        return -1;
+    }
+
+    (void)UI_add_user_data(ui, duplicate);
+    ui->flags |= UI_FLAG_DUPL_DATA;
+
+    return 0;
+}
+
 void *UI_get0_user_data(UI *ui)
 {
     return ui->user_data;
@@ -409,6 +442,19 @@ const char *UI_get0_result(UI *ui, int i)
     return UI_get0_result_string(sk_UI_STRING_value(ui->strings, i));
 }
 
+int UI_get_result_length(UI *ui, int i)
+{
+    if (i < 0) {
+        UIerr(UI_F_UI_GET_RESULT_LENGTH, UI_R_INDEX_TOO_SMALL);
+        return -1;
+    }
+    if (i >= sk_UI_STRING_num(ui->strings)) {
+        UIerr(UI_F_UI_GET_RESULT_LENGTH, UI_R_INDEX_TOO_LARGE);
+        return -1;
+    }
+    return UI_get_result_string_length(sk_UI_STRING_value(ui->strings, i));
+}
+
 static int print_error(const char *str, size_t len, UI *ui)
 {
     UI_STRING uis;
@@ -483,6 +529,8 @@ int UI_process(UI *ui)
             }
         }
     }
+
+    state = NULL;
  err:
     if (ui->meth->ui_close_session != NULL
         && ui->meth->ui_close_session(ui) <= 0) {
@@ -525,12 +573,12 @@ int UI_ctrl(UI *ui, int cmd, long i, void *p, void (*f) (void))
 
 int UI_set_ex_data(UI *r, int idx, void *arg)
 {
-    return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
+    return CRYPTO_set_ex_data(&r->ex_data, idx, arg);
 }
 
 void *UI_get_ex_data(UI *r, int idx)
 {
-    return (CRYPTO_get_ex_data(&r->ex_data, idx));
+    return CRYPTO_get_ex_data(&r->ex_data, idx);
 }
 
 const UI_METHOD *UI_get_method(UI *ui)
@@ -624,6 +672,18 @@ int UI_method_set_closer(UI_METHOD *method, int (*closer) (UI *ui))
     return -1;
 }
 
+int UI_method_set_data_duplicator(UI_METHOD *method,
+                                  void *(*duplicator) (UI *ui, void *ui_data),
+                                  void (*destructor)(UI *ui, void *ui_data))
+{
+    if (method != NULL) {
+        method->ui_duplicate_data = duplicator;
+        method->ui_destroy_data = destructor;
+        return 0;
+    }
+    return -1;
+}
+
 int UI_method_set_prompt_constructor(UI_METHOD *method,
                                      char *(*prompt_constructor) (UI *ui,
                                                                   const char
@@ -686,6 +746,20 @@ char *(*UI_method_get_prompt_constructor(const UI_METHOD *method))
     return NULL;
 }
 
+void *(*UI_method_get_data_duplicator(const UI_METHOD *method)) (UI *, void *)
+{
+    if (method != NULL)
+        return method->ui_duplicate_data;
+    return NULL;
+}
+
+void (*UI_method_get_data_destructor(const UI_METHOD *method)) (UI *, void *)
+{
+    if (method != NULL)
+        return method->ui_destroy_data;
+    return NULL;
+}
+
 const void *UI_method_get_ex_data(const UI_METHOD *method, int idx)
 {
     return CRYPTO_get_ex_data(&method->ex_data, idx);
@@ -736,6 +810,21 @@ const char *UI_get0_result_string(UI_STRING *uis)
     return NULL;
 }
 
+int UI_get_result_string_length(UI_STRING *uis)
+{
+    switch (uis->type) {
+    case UIT_PROMPT:
+    case UIT_VERIFY:
+        return uis->result_len;
+    case UIT_NONE:
+    case UIT_BOOLEAN:
+    case UIT_INFO:
+    case UIT_ERROR:
+        break;
+    }
+    return -1;
+}
+
 const char *UI_get0_test_string(UI_STRING *uis)
 {
     switch (uis->type) {
@@ -783,8 +872,18 @@ int UI_get_result_maxsize(UI_STRING *uis)
 
 int UI_set_result(UI *ui, UI_STRING *uis, const char *result)
 {
-    int l = strlen(result);
+#if 0
+    /*
+     * This is placed here solely to preserve UI_F_UI_SET_RESULT
+     * To be removed for OpenSSL 1.2.0
+     */
+    UIerr(UI_F_UI_SET_RESULT, ERR_R_DISABLED);
+#endif
+    return UI_set_result_ex(ui, uis, result, strlen(result));
+}
 
+int UI_set_result_ex(UI *ui, UI_STRING *uis, const char *result, int len)
+{
     ui->flags &= ~UI_FLAG_REDOABLE;
 
     switch (uis->type) {
@@ -799,16 +898,16 @@ int UI_set_result(UI *ui, UI_STRING *uis, const char *result)
             BIO_snprintf(number2, sizeof(number2), "%d",
                          uis->_.string_data.result_maxsize);
 
-            if (l < uis->_.string_data.result_minsize) {
+            if (len < uis->_.string_data.result_minsize) {
                 ui->flags |= UI_FLAG_REDOABLE;
-                UIerr(UI_F_UI_SET_RESULT, UI_R_RESULT_TOO_SMALL);
+                UIerr(UI_F_UI_SET_RESULT_EX, UI_R_RESULT_TOO_SMALL);
                 ERR_add_error_data(5, "You must type in ",
                                    number1, " to ", number2, " characters");
                 return -1;
             }
-            if (l > uis->_.string_data.result_maxsize) {
+            if (len > uis->_.string_data.result_maxsize) {
                 ui->flags |= UI_FLAG_REDOABLE;
-                UIerr(UI_F_UI_SET_RESULT, UI_R_RESULT_TOO_LARGE);
+                UIerr(UI_F_UI_SET_RESULT_EX, UI_R_RESULT_TOO_LARGE);
                 ERR_add_error_data(5, "You must type in ",
                                    number1, " to ", number2, " characters");
                 return -1;
@@ -816,19 +915,21 @@ int UI_set_result(UI *ui, UI_STRING *uis, const char *result)
         }
 
         if (uis->result_buf == NULL) {
-            UIerr(UI_F_UI_SET_RESULT, UI_R_NO_RESULT_BUFFER);
+            UIerr(UI_F_UI_SET_RESULT_EX, UI_R_NO_RESULT_BUFFER);
             return -1;
         }
 
-        OPENSSL_strlcpy(uis->result_buf, result,
-                    uis->_.string_data.result_maxsize + 1);
+        memcpy(uis->result_buf, result, len);
+        if (len <= uis->_.string_data.result_maxsize)
+            uis->result_buf[len] = '\0';
+        uis->result_len = len;
         break;
     case UIT_BOOLEAN:
         {
             const char *p;
 
             if (uis->result_buf == NULL) {
-                UIerr(UI_F_UI_SET_RESULT, UI_R_NO_RESULT_BUFFER);
+                UIerr(UI_F_UI_SET_RESULT_EX, UI_R_NO_RESULT_BUFFER);
                 return -1;
             }