From e4d0c40f8247214bc0069fc6eafc13122464e413 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Thu, 15 Apr 2021 23:47:40 +0200
Subject: Merge pull request #2672 from rouault/utm_invalid_zone

utm: error out when value of +zone= is not an integer (fixes #2671)
---
 src/param.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/param.cpp')

diff --git a/src/param.cpp b/src/param.cpp
index a716f9b9..21afc57f 100644
--- a/src/param.cpp
+++ b/src/param.cpp
@@ -201,6 +201,14 @@ PROJVALUE pj_param (PJ_CONTEXT *ctx, paralist *pl, const char *opt) {
     switch (type) {
     case 'i':    /* integer input */
         value.i = atoi(opt);
+        for( const char* ptr = opt; *ptr != '\0'; ++ptr )
+        {
+            if( !(*ptr >= '0' && *ptr <= '9') )
+            {
+                proj_context_errno_set (ctx, PROJ_ERR_INVALID_OP_ILLEGAL_ARG_VALUE);
+                value.i = 0;
+            }
+        }
         break;
     case 'd':    /* simple real input */
         value.f = pj_atof(opt);
-- 
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