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authorDaniel Stenberg <daniel@haxx.se>2016-02-29 20:32:08 +0100
committerDaniel Stenberg <daniel@haxx.se>2016-02-29 20:32:08 +0100
commitc2a809cd265c37e7bbef55e64d70114d2f0d7189 (patch)
tree3af7fc7689976968278a44d7f1662489dc02917d /lib
parentae7d6b715448101caf99ea3555c7b7448711676e (diff)
formpost: fix memory leaks in AddFormData error branches
Reported-by: Dmitry-Me Fixes #688
Diffstat (limited to 'lib')
-rw-r--r--lib/formdata.c36
1 files changed, 25 insertions, 11 deletions
diff --git a/lib/formdata.c b/lib/formdata.c
index 5ccb9d8b7..454be7610 100644
--- a/lib/formdata.c
+++ b/lib/formdata.c
@@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2016, 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
@@ -825,28 +825,34 @@ static CURLcode AddFormData(struct FormData **formp,
curl_off_t length,
curl_off_t *size)
{
- struct FormData *newform = malloc(sizeof(struct FormData));
+ struct FormData *newform;
+ char *alloc2 = NULL;
+ CURLcode result = CURLE_OK;
+ if(length < 0 || (size && *size < 0))
+ return CURLE_BAD_FUNCTION_ARGUMENT;
+
+ newform = malloc(sizeof(struct FormData));
if(!newform)
return CURLE_OUT_OF_MEMORY;
newform->next = NULL;
- if(length < 0 || (size && *size < 0))
- return CURLE_BAD_FUNCTION_ARGUMENT;
-
if(type <= FORM_CONTENT) {
/* we make it easier for plain strings: */
if(!length)
length = strlen((char *)line);
#if (SIZEOF_SIZE_T < CURL_SIZEOF_CURL_OFF_T)
- else if(length >= (curl_off_t)(size_t)-1)
- return CURLE_BAD_FUNCTION_ARGUMENT;
+ else if(length >= (curl_off_t)(size_t)-1) {
+ result = CURLE_BAD_FUNCTION_ARGUMENT;
+ goto error;
+ }
#endif
newform->line = malloc((size_t)length+1);
if(!newform->line) {
- free(newform);
- return CURLE_OUT_OF_MEMORY;
+ result = CURLE_OUT_OF_MEMORY;
+ goto error;
}
+ alloc2 = newform->line;
memcpy(newform->line, line, (size_t)length);
newform->length = (size_t)length;
newform->line[(size_t)length]=0; /* zero terminate for easier debugging */
@@ -877,12 +883,20 @@ static CURLcode AddFormData(struct FormData **formp,
struct_stat file;
if(!stat(newform->line, &file) && !S_ISDIR(file.st_mode))
*size += filesize(newform->line, file);
- else
- return CURLE_BAD_FUNCTION_ARGUMENT;
+ else {
+ result = CURLE_BAD_FUNCTION_ARGUMENT;
+ goto error;
+ }
}
}
}
return CURLE_OK;
+ error:
+ if(newform)
+ free(newform);
+ if(alloc2)
+ free(alloc2);
+ return result;
}
/*