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Avoid using COM_DefaultExtension() whenever possible: it may lead

Browse source 
to unpredictable results. Use a new procedure COM_AddExtension()
which appends the given extension to the path if the one it has,
if any, doesn't match. In Host_Game_f(), reject "." as the path.

git-svn-id: svn://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@902 af15c1b1-3010-417e-b628-4374ebc0bcbd
This commit is contained in:
Ozkan Sezer 2014-04-26 07:50:54 +00:00
parent f784b8a769
commit 53e10c7098
5 changed files with 31 additions and 19 deletions
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4
Quake/cl_demo.c
View file

@ -283,7 +283,7 @@ void CL_Record_f (void)
}
// open the demo file
COM_DefaultExtension (name, ".dem", sizeof(name));
COM_AddExtension (name, ".dem", sizeof(name));
Con_Printf ("recording to %s.\n", name);
cls.demofile = fopen (name, "wb");
@ -398,7 +398,7 @@ void CL_PlayDemo_f (void)
// open the demo file
q_strlcpy (name, Cmd_Argv(1), sizeof(name));
COM_DefaultExtension (name, ".dem", sizeof(name));
COM_AddExtension (name, ".dem", sizeof(name));
Con_Printf ("Playing demo from %s.\n", name);

31
Quake/common.c
View file

@ -1052,31 +1052,40 @@ void COM_FileBase (const char *in, char *out, size_t outsize)
/*
==================
COM_DefaultExtension
if path doesn't have a .EXT, append extension
(extension should include the leading ".")
==================
*/
void COM_DefaultExtension (char *path, const char *extension, size_t len)
{
char *src;
size_t l;
//
// if path doesn't have a .EXT, append extension
// (extension should include the .)
//
if (!*path)
return;
l = strlen(path);
src = path + l - 1;
while (*src != '/' && src != path)
if (!*path) return;
src = path + strlen(path) - 1;
while (*src != '/' && *src != '\\' && src != path)
{
if (*src == '.')
return; // it has an extension
return; // it has an extension
src--;
}
q_strlcat(path, extension, len);
}
/*
==================
COM_AddExtension
if path extension doesn't match .EXT, append it
(extension should include the leading ".")
==================
*/
void COM_AddExtension (char *path, const char *extension, size_t len)
{
if (strcmp(COM_FileGetExtension(path), extension + 1) != 0)
q_strlcat(path, extension, len);
}
/*
==============

1
Quake/common.h
View file

@ -179,6 +179,7 @@ void COM_InitFilesystem (void);
const char *COM_SkipPath (const char *pathname);
void COM_StripExtension (const char *in, char *out, size_t outsize);
void COM_FileBase (const char *in, char *out, size_t outsize);
void COM_AddExtension (char *path, const char *extension, size_t len);
void COM_DefaultExtension (char *path, const char *extension, size_t len);
const char *COM_FileGetExtension (const char *in); /* doesn't return NULL */
void COM_ExtractExtension (const char *in, char *out, size_t outsize);

2
Quake/console.c
View file

@ -174,7 +174,7 @@ static void Con_Dump_f (void)
return;
}
q_snprintf (name, sizeof(name), "%s/%s", com_gamedir, Cmd_Argv(1));
COM_DefaultExtension (name, ".txt", sizeof(name));
COM_AddExtension (name, ".txt", sizeof(name));
}
else
q_snprintf (name, sizeof(name), "%s/condump.txt", com_gamedir);

12
Quake/host_cmd.c
View file

@ -136,19 +136,21 @@ void Host_Game_f (void)
if (Cmd_Argc() > 1)
{
const char *p = Cmd_Argv(1);
if (!registered.value) //disable command for shareware quake
{
Con_Printf("You must have the registered version to use modified games\n");
return;
}
if (strstr(Cmd_Argv(1), ".."))
if (!strcmp(p, ".") || strstr(p, ".."))
{
Con_Printf ("Relative pathnames are not allowed.\n");
return;
}
q_strlcpy (pakfile, va("%s/%s", host_parms->basedir, Cmd_Argv(1)), sizeof(pakfile));
q_strlcpy (pakfile, va("%s/%s", host_parms->basedir, p), sizeof(pakfile));
if (!q_strcasecmp(pakfile, com_gamedir)) //no change
{
Con_Printf("\"game\" is already \"%s\"\n", COM_SkipPath(com_gamedir));
@ -170,7 +172,7 @@ void Host_Game_f (void)
q_strlcpy (com_gamedir, pakfile, sizeof(com_gamedir));
if (q_strcasecmp(Cmd_Argv(1), GAMENAME)) //game is not id1
if (q_strcasecmp(p, GAMENAME)) //game is not id1
{
// assign a path_id to this game directory
if (com_searchpaths)
@ -1046,7 +1048,7 @@ void Host_Savegame_f (void)
}
q_snprintf (name, sizeof(name), "%s/%s", com_gamedir, Cmd_Argv(1));
COM_DefaultExtension (name, ".sav", sizeof(name));
COM_AddExtension (name, ".sav", sizeof(name));
Con_Printf ("Saving game to %s...\n", name);
f = fopen (name, "w");
@ -1118,7 +1120,7 @@ void Host_Loadgame_f (void)
cls.demonum = -1; // stop demo loop in case this fails
q_snprintf (name, sizeof(name), "%s/%s", com_gamedir, Cmd_Argv(1));
COM_DefaultExtension (name, ".sav", sizeof(name));
COM_AddExtension (name, ".sav", sizeof(name));
// we can't call SCR_BeginLoadingPlaque, because too much stack space has
// been used. The menu calls it before stuffing loadgame command