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mod_lua: Use binary strstr for finding endpoints of a multipart object. (How did this EVER work?! *sigh*)

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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1588761 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Daniel Gruno
2014-04-20 13:58:13 +00:00
parent 7b95131a35
commit e1f073ca56
1 changed files with 17 additions and 3 deletions
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20
modules/lua/lua_request.c
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@@ -317,6 +317,20 @@ static int req_parseargs(lua_State *L)
return 2; /* [table<string, string>, table<string, array<string>>] */
}
/* ap_lua_binstrstr: Binary strstr function for uploaded data with NULL bytes */
char* ap_lua_binstrstr (const char * haystack, size_t hsize, const char* needle, size_t nsize)
{
if (haystack == NULL) return NULL;
if (needle == NULL) return NULL;
if (hsize < nsize) return NULL;
for (size_t p = 0; p <= (hsize - nsize); ++p) {
if (memcmp(haystack + p, needle, nsize) == 0) {
return (char*) (haystack + p);
}
}
return NULL;
}
/* r:parsebody(): Parses regular (url-enocded) or multipart POST data and returns two tables*/
static int req_parsebody(lua_State *L)
{
@@ -348,15 +362,15 @@ static int req_parsebody(lua_State *L)
for
(
start = strstr((char *) data, multipart);
start != start + size;
start != NULL;
start = end
) {
i++;
if (i == POST_MAX_VARS) break;
end = strstr((char *) (start + 1), multipart);
if (!end) end = start + size;
crlf = strstr((char *) start, "\r\n\r\n");
if (!crlf) break;
end = ap_lua_binstrstr(crlf, (size - (crlf - data)), multipart, len);
if (end == NULL) break;
key = (char *) apr_pcalloc(r->pool, 256);
filename = (char *) apr_pcalloc(r->pool, 256);
vlen = end - crlf - 8;