From 76fdb2419bfec0e747db2530379484a3dc571f34 Mon Sep 17 00:00:00 2001
From: Tao Bao <tbao@google.com>
Date: Mon, 20 Mar 2017 17:09:13 -0700
Subject: verify_file: Add constness to a few addresses.

We should not touch any data while verifying packages (or parsing the
in-memory ASN.1 structures).

Test: mmma bootable/recovery
Test: recovery_component_test passes.
Test: recovery_unit_test passes.
Change-Id: Ie990662c6451ec066a1807b3081c9296afbdb0bf
---
 asn1_decoder.cpp | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

(limited to 'asn1_decoder.cpp')

diff --git a/asn1_decoder.cpp b/asn1_decoder.cpp
index e7aef781c..ca4ee5267 100644
--- a/asn1_decoder.cpp
+++ b/asn1_decoder.cpp
@@ -22,9 +22,9 @@
 
 
 typedef struct asn1_context {
-    size_t length;
-    uint8_t* p;
-    int app_type;
+  size_t length;
+  const uint8_t* p;
+  int app_type;
 } asn1_context_t;
 
 
@@ -38,7 +38,7 @@ static const int kTagSequence = 0x30;
 static const int kTagSet = 0x31;
 static const int kTagConstructed = 0xA0;
 
-asn1_context_t* asn1_context_new(uint8_t* buffer, size_t length) {
+asn1_context_t* asn1_context_new(const uint8_t* buffer, size_t length) {
     asn1_context_t* ctx = (asn1_context_t*) calloc(1, sizeof(asn1_context_t));
     if (ctx == NULL) {
         return NULL;
@@ -168,7 +168,7 @@ bool asn1_sequence_next(asn1_context_t* ctx) {
     return true;
 }
 
-bool asn1_oid_get(asn1_context_t* ctx, uint8_t** oid, size_t* length) {
+bool asn1_oid_get(asn1_context_t* ctx, const uint8_t** oid, size_t* length) {
     if (get_byte(ctx) != kTagOid) {
         return false;
     }
@@ -179,7 +179,7 @@ bool asn1_oid_get(asn1_context_t* ctx, uint8_t** oid, size_t* length) {
     return true;
 }
 
-bool asn1_octet_string_get(asn1_context_t* ctx, uint8_t** octet_string, size_t* length) {
+bool asn1_octet_string_get(asn1_context_t* ctx, const uint8_t** octet_string, size_t* length) {
     if (get_byte(ctx) != kTagOctetString) {
         return false;
     }
-- 
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