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Buffer overflows are bad for you, m'kay?

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@3029 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Mark Olsen 2008-08-23 19:17:19 +00:00
parent 828b3e99ab
commit 24e178bc37
3 changed files with 18 additions and 10 deletions
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2
engine/server/server.h
View file

@ -952,7 +952,7 @@ void SV_SaveInfos(vfsfile_t *f);
void Master_Heartbeat (void);
void Master_Packet (void);
void SV_FixupName(char *in, char *out);
void SV_FixupName(char *in, char *out, unsigned int outlen);
//
// sv_init.c

20
engine/server/sv_main.c
View file

@ -197,7 +197,7 @@ char cvargroup_servercontrol[] = "server control variables";
vfsfile_t *sv_fraglogfile;
void SV_FixupName(char *in, char *out);
void SV_FixupName(char *in, char *out, unsigned int outlen);
void SV_AcceptClient (netadr_t adr, int userid, char *userinfo);
void Master_Shutdown (void);
void PR_SetPlayerClass(client_t *cl, int classnum, qboolean fromqc);
@ -1754,7 +1754,7 @@ client_t *SVC_DirectConnect(void)
#endif
}
SV_FixupName(name, name);
SV_FixupName(name, name, sizeof(name));
if (!*name)
{
@ -3642,14 +3642,20 @@ void Master_Shutdown (void)
#define iswhite(c) (c == ' ' || c == INVIS_CHAR1 || c == INVIS_CHAR2 || c == INVIS_CHAR3)
#define isinvalid(c) (c == '\r' || c == '\n')
//is allowed to shorten, out must be as long as in and min of "unnamed"+1
void SV_FixupName(char *in, char *out)
void SV_FixupName(char *in, char *out, unsigned int outlen)
{
char *s, *p;
unsigned int len;
if (outlen == 0)
return;
len = outlen;
s = out;
while(iswhite(*in) || isinvalid(*in))
in++;
while(*in)
while(*in && len > 0)
{
if (isinvalid(*in))
{
@ -3657,13 +3663,15 @@ void SV_FixupName(char *in, char *out)
continue;
}
*s++ = *in++;
len--;
}
*s = '\0';
if (!*out)
{ //reached end and it was all whitespace
//white space only
strcpy(out, "unnamed");
strncpy(out, "unnamed", outlen);
out[outlen-1] = 0;
p = out;
}
@ -3756,7 +3764,7 @@ void SV_ExtractFromUserinfo (client_t *cl)
if (cl->protocol != SCP_BAD || *val)
{
SV_FixupName(val, newname);
SV_FixupName(val, newname, sizeof(newname));
if (strlen(newname) > 40)
newname[40] = 0;
}

6
engine/server/sv_rankin.c
View file

@ -480,7 +480,7 @@ void Rank_AddUser_f (void)
return;
}
SV_FixupName(name, name);
SV_FixupName(name, name, sizeof(name));
if (!Rank_OpenRankings())
{
@ -563,7 +563,7 @@ void Rank_SetPass_f (void)
return;
}
SV_FixupName(name, name);
SV_FixupName(name, name, sizeof(name));
id = rankfileheader.leader;
while(id)
@ -592,7 +592,7 @@ int Rank_GetPass (char *name)
return 0;
}
SV_FixupName(name, name);
SV_FixupName(name, name, sizeof(name));
id = rankfileheader.leader;
while(id)