[GNUnet-SVN] [gnurl] 25/163: tftp: make sure error is zero terminated before printfing it

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ng0 pushed a commit to branch master
in repository gnurl.

commit 2e65a920523519440f3768967915f022fae9701f
Author: Daniel Stenberg <address@hidden>
AuthorDate: Tue May 22 10:10:39 2018 +0200

    tftp: make sure error is zero terminated before printfing it
---
 lib/tftp.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/tftp.c b/lib/tftp.c
index b32960f82..d57af6a7a 100644
--- a/lib/tftp.c
+++ b/lib/tftp.c
@@ -1148,8 +1148,11 @@ static CURLcode tftp_receive_packet(struct connectdata 
*conn)
     case TFTP_EVENT_ERROR:
     {
       unsigned short error = getrpacketblock(&state->rpacket);
+      char *str = (char *)state->rpacket.data + 4;
+      size_t strn = state->rbytes - 4;
       state->error = (tftp_error_t)error;
-      infof(data, "%s\n", (const char *)state->rpacket.data + 4);
+      if(Curl_strnlen(str, strn) < strn)
+        infof(data, "TFTP error: %s\n", str);
       break;
     }
     case TFTP_EVENT_ACK:

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