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Windows: Fix potential crash in version checker.

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1) see if we actually received anything
(if http://eduke32.sourceforge.net/VERSION is unavailable, this returns now
instead of continuing with nonsensical data)
2) check if we're getting a token from strtok()

git-svn-id: https://svn.eduke32.com/eduke32@3244 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2012-11-29 12:49:41 +00:00
parent 7614a78cc5
commit c4abfc405a
1 changed files with 16 additions and 2 deletions
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18
polymer/eduke32/source/winbits.c
View file

@ -42,6 +42,7 @@ int32_t G_GetVersionFromWebsite(char *buffer)
struct hostent *h;
char *host = "eduke32.sourceforge.net";
char *req = "GET http://eduke32.sourceforge.net/VERSION HTTP/1.0\r\n\r\n\r\n";
char *tok;
char tempbuf[2048],otherbuf[16],ver[16];
SOCKET mysock;
@ -94,13 +95,26 @@ int32_t G_GetVersionFromWebsite(char *buffer)
}
// initprintf("sent %d bytes\n",bytes_sent);
recv(mysock, (char *)&tempbuf, sizeof(tempbuf), 0);
i = recv(mysock, (char *)&tempbuf, sizeof(tempbuf), 0);
if (i < 0)
{
// initprintf("update: recv() returned %d\n", i);
return 0;
}
closesocket(mysock);
Bmemcpy(&otherbuf,&tempbuf,sizeof(otherbuf));
strtok(otherbuf," ");
if (Batol(strtok(NULL," ")) == 200)
tok = strtok(NULL," ");
if (tok == NULL)
{
// initprintf("update: strtok() produced no token\n");
return 0;
}
if (Batol(tok) == 200)
{
for (i=0; (unsigned)i<strlen(tempbuf); i++) // HACK: all of this needs to die a fiery death; we just skip to the content
{