curl -w: handle a blank input file correctly

Previously it would end up with an uninitialized memory buffer that
would lead to a crash or junk getting output.

Added test 1271 to verify.

Reported-by: Brian Carpenter
Closes #4786
This commit is contained in:
Daniel Stenberg 2020-01-04 11:41:35 +01:00
parent 1b71bc532b
commit 4c34af4c99
No known key found for this signature in database
GPG Key ID: 5CC908FDB71E12C2
3 changed files with 51 additions and 3 deletions

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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@ -65,7 +65,7 @@ ParameterError file2string(char **bufp, FILE *file)
size_t alloc_needed;
char buffer[256];
size_t stringlen = 0;
string = malloc(alloc);
string = calloc(1, alloc);
if(!string)
return PARAM_NO_MEM;

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@ -143,7 +143,7 @@ test1236 test1237 test1238 test1239 test1240 test1241 test1242 test1243 \
test1244 test1245 test1246 test1247 test1248 test1249 test1250 test1251 \
test1252 test1253 test1254 test1255 test1256 test1257 test1258 test1259 \
test1260 test1261 test1262 test1263 test1264 test1265 test1266 test1267 \
test1268 test1269 test1270 \
test1268 test1269 test1270 test1271 \
\
test1280 test1281 test1282 test1283 test1284 test1285 test1286 test1287 \
test1288 test1289 test1290 test1291 test1292 test1293 \

48
tests/data/test1271 Normal file
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@ -0,0 +1,48 @@
<testcase>
<info>
<keywords>
HTTP
HTTP GET
--write-out
</keywords>
</info>
# Server-side
<reply>
<data>
HTTP/1.1 200 This is a weirdo text message swsclose
Content-Length: 4
Connection: close
Moo
</data>
</reply>
# Client-side
<client>
<server>
http
</server>
<name>
--write-out from file with empty file
</name>
<command>
http://%HOSTIP:%HTTPPORT/we/want/our/1271 -w @log/blank1271
</command>
<file name="log/blank1271">
</file>
</client>
# Verify data after the test has been "shot"
<verify>
<strip>
^User-Agent:.*
</strip>
<protocol>
GET /we/want/our/1271 HTTP/1.1
Host: %HOSTIP:%HTTPPORT
Accept: */*
</protocol>
</verify>
</testcase>