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do not mistake WAD-named directories for actual WAD files (#2118)

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* do not mistake WAD-named directories for actual WAD files

* explicitly check for files not dirs
This commit is contained in:
Fabian Greffrath 2025-01-05 21:47:26 +01:00 committed by GitHub
parent 22a1ee93e2
commit 7e39b8d839
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GPG Key ID: B5690EEEBB952194
3 changed files with 10 additions and 24 deletions
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14
src/d_iwad.c
View File

@ -453,15 +453,6 @@ static void CheckDOSDefaults(void)
#endif
// Returns true if the specified path is a path to a file
// of the specified name.
static boolean DirIsFile(const char *path, const char *filename)
{
return strchr(path, DIR_SEPARATOR) != NULL
&& !strcasecmp(M_BaseName(path), filename);
}
// Add IWAD directories parsed from splitting a path string containing
// paths separated by PATH_SEPARATOR. 'suffix' is a string to concatenate
// to the end of the paths before adding them.
@ -620,7 +611,6 @@ void BuildIWADDirList(void)
char *D_FindWADByName(const char *name)
{
char *path;
char *probe;
// Absolute path?
@ -643,7 +633,7 @@ char *D_FindWADByName(const char *name)
// file.
probe = M_FileCaseExists(*dir);
if (DirIsFile(*dir, name) && probe != NULL)
if (probe != NULL)
{
return probe;
}
@ -651,7 +641,7 @@ char *D_FindWADByName(const char *name)
// Construct a string for the full path
path = M_StringJoin(*dir, DIR_SEPARATOR_S, name);
char *path = M_StringJoin(*dir, DIR_SEPARATOR_S, name);
probe = M_FileCaseExists(path);
if (probe != NULL)

19
src/m_misc.c
View File

@ -36,7 +36,7 @@
// Check if a file exists
boolean M_FileExists(const char *filename)
static boolean M_FileExistsNotDir(const char *filename)
{
FILE *fstream;
@ -45,14 +45,11 @@ boolean M_FileExists(const char *filename)
if (fstream != NULL)
{
fclose(fstream);
return true;
return M_DirExists(filename) == false;
}
else
{
// If we can't open because the file is a directory, the
// "file" exists at least!
return errno == EISDIR;
return false;
}
}
@ -118,7 +115,7 @@ char *M_FileCaseExists(const char *path)
path_dup = M_StringDuplicate(path);
// 0: actual path
if (M_FileExists(path_dup))
if (M_FileExistsNotDir(path_dup))
{
return path_dup;
}
@ -130,7 +127,7 @@ char *M_FileCaseExists(const char *path)
// 1: lowercase filename, e.g. doom2.wad
M_StringToLower(filename);
if (M_FileExists(path_dup))
if (M_FileExistsNotDir(path_dup))
{
return path_dup;
}
@ -138,7 +135,7 @@ char *M_FileCaseExists(const char *path)
// 2: uppercase filename, e.g. DOOM2.WAD
M_StringToUpper(filename);
if (M_FileExists(path_dup))
if (M_FileExistsNotDir(path_dup))
{
return path_dup;
}
@ -149,7 +146,7 @@ char *M_FileCaseExists(const char *path)
{
M_StringToLower(ext + 1);
if (M_FileExists(path_dup))
if (M_FileExistsNotDir(path_dup))
{
return path_dup;
}
@ -160,7 +157,7 @@ char *M_FileCaseExists(const char *path)
{
M_StringToLower(filename + 1);
if (M_FileExists(path_dup))
if (M_FileExistsNotDir(path_dup))
{
return path_dup;
}

1
src/m_misc.h
View File

@ -23,7 +23,6 @@
#include "doomtype.h"
boolean M_FileExists(const char *file);
boolean M_DirExists(const char *path);
int M_FileLength(const char *path);
char *M_TempFile(const char *s);