gtkradiant/plugins/vfspk3/vfs.cpp

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/*
Copyright (c) 2001, Loki software, inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list
of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
Neither the name of Loki software nor the names of its contributors may be used
to endorse or promote products derived from this software without specific prior
written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT,INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
//
// Rules:
//
// - Directories should be searched in the following order: ~/.q3a/baseq3,
// install dir (/usr/local/games/quake3/baseq3) and cd_path (/mnt/cdrom/baseq3).
//
// - Pak files are searched first inside the directories.
// - Case insensitive.
// - Unix-style slashes (/) (windows is backwards .. everyone knows that)
//
// Leonardo Zide (leo@lokigames.com)
//
#include <glib.h>
#include <stdio.h>
#if defined (__linux__) || defined (__APPLE__)
#include <dirent.h>
#include <unistd.h>
#else
#include <wtypes.h>
#include <io.h>
#define R_OK 04
#define S_ISDIR(mode) (mode & _S_IFDIR)
#endif
// TTimo: String functions
// see http://www.qeradiant.com/faq/index.cgi?file=175
#include "str.h"
#include <stdlib.h>
#include <sys/stat.h>
#include "vfspk3.h"
#include "vfs.h"
#include "unzip-vfspk3.h"
typedef struct
{
char* name;
unz_s zipinfo;
unzFile zipfile;
guint32 size;
} VFS_PAKFILE;
// =============================================================================
// Global variables
static GSList* g_unzFiles;
static GSList* g_pakFiles;
static char g_strDirs[VFS_MAXDIRS][PATH_MAX];
static int g_numDirs;
static bool g_bUsePak = true;
// =============================================================================
// Static functions
static void vfsAddSlash (char *str)
{
int n = strlen (str);
if (n > 0)
{
if (str[n-1] != '\\' && str[n-1] != '/')
strcat (str, "/");
}
}
static void vfsFixDOSName (char *src)
{
if (src == NULL)
return;
while (*src)
{
if (*src == '\\')
*src = '/';
src++;
}
}
static void vfsInitPakFile (const char *filename)
{
unz_global_info gi;
unzFile uf;
guint32 i;
int err;
uf = unzOpen (filename);
if (uf == NULL)
{
g_FuncTable.m_pfnSysFPrintf(SYS_WRN, " failed to init pak file %s\n", filename);
return;
}
g_FuncTable.m_pfnSysPrintf(" pak file: %s\n", filename);
g_unzFiles = g_slist_append (g_unzFiles, uf);
err = unzGetGlobalInfo (uf,&gi);
if (err != UNZ_OK)
return;
unzGoToFirstFile(uf);
for (i = 0; i < gi.number_entry; i++)
{
char filename_inzip[NAME_MAX];
unz_file_info file_info;
VFS_PAKFILE* file;
err = unzGetCurrentFileInfo (uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
if (err != UNZ_OK)
break;
file = (VFS_PAKFILE*)g_malloc (sizeof (VFS_PAKFILE));
g_pakFiles = g_slist_append (g_pakFiles, file);
vfsFixDOSName (filename_inzip);
g_strdown (filename_inzip);
file->name = g_strdup (filename_inzip);
file->size = file_info.uncompressed_size;
file->zipfile = uf;
memcpy (&file->zipinfo, uf, sizeof (unz_s));
if ((i+1) < gi.number_entry)
{
err = unzGoToNextFile(uf);
if (err!=UNZ_OK)
break;
}
}
}
static GSList* vfsGetListInternal (const char *refdir, const char *ext, bool directories)
{
GSList *lst, *lst_aux, *files = NULL;
char dirname[NAME_MAX], extension[NAME_MAX], filename[NAME_MAX];
char basedir[NAME_MAX];
int dirlen;
char *ptr;
char *dirlist;
struct stat st;
GDir *diskdir;
int i;
if (refdir != NULL)
{
strcpy (dirname, refdir);
g_strdown (dirname);
vfsFixDOSName (dirname);
vfsAddSlash (dirname);
} else
dirname[0] = '\0';
dirlen = strlen (dirname);
if (ext != NULL)
strcpy (extension, ext);
else
extension[0] = '\0';
g_strdown (extension);
for (lst = g_pakFiles; lst != NULL; lst = g_slist_next (lst))
{
VFS_PAKFILE* file = (VFS_PAKFILE*)lst->data;
gboolean found = FALSE;
ptr = file->name;
// check that the file name begins with dirname
for (i = 0; (*ptr && i < dirlen); i++, ptr++)
if (*ptr != dirname[i])
break;
if (i != dirlen)
continue;
if (directories)
{
char *sep = strchr (ptr, '/');
if (sep == NULL)
continue;
i = sep-ptr;
// check for duplicates
for (lst_aux = files; lst_aux; lst_aux = g_slist_next (lst_aux))
if (strncmp ((char*)lst_aux->data, ptr, i) == 0)
{
found = TRUE;
break;
}
if (!found)
{
char *name = g_strndup (ptr, i+1);
name[i] = '\0';
files = g_slist_append (files, name);
}
} else
{
// check extension
char *ptr_ext = strrchr (ptr, '.');
if ((ext != NULL) && ((ptr_ext == NULL) || (strcmp (ptr_ext+1, extension) != 0)))
continue;
// check for duplicates
for (lst_aux = files; lst_aux; lst_aux = g_slist_next (lst_aux))
if (strcmp ((char*)lst_aux->data, ptr) == 0)
{
found = TRUE;
break;
}
if (!found)
files = g_slist_append (files, g_strdup (ptr));
}
}
for (i = 0; i < g_numDirs; i++)
{
strcpy (basedir, g_strDirs[i]);
strcat (basedir, dirname);
diskdir = g_dir_open (basedir, 0, NULL);
if (diskdir != NULL)
{
while (1)
{
const char* name = g_dir_read_name(diskdir);
if(name == NULL)
break;
if (directories && (name[0] == '.'))
continue;
sprintf (filename, "%s%s", basedir, name);
stat (filename, &st);
if ((S_ISDIR (st.st_mode) != 0) != directories)
continue;
gboolean found = FALSE;
dirlist = g_strdup(name);
g_strdown (dirlist);
char *ptr_ext = strrchr (dirlist, '.');
if(ext == NULL
|| (ext != NULL && ptr_ext != NULL && ptr_ext[0] != '\0' && strcmp (ptr_ext+1, extension) == 0))
{
// check for duplicates
for (lst_aux = files; lst_aux; lst_aux = g_slist_next (lst_aux))
if (strcmp ((char*)lst_aux->data, dirlist) == 0)
{
found = TRUE;
break;
}
if (!found)
files = g_slist_append (files, g_strdup (dirlist));
}
g_free(dirlist);
}
g_dir_close (diskdir);
}
}
return files;
}
/*!
This behaves identically to -stricmp(a,b), except that ASCII chars
[\]^`_ come AFTER alphabet chars instead of before. This is because
it effectively converts all alphabet chars to uppercase before comparison,
while stricmp converts them to lowercase.
*/
//!\todo Analyse the code in rtcw/q3 to see how it behaves.
static int vfsPakSort (const void *a, const void *b)
{
char *s1, *s2;
int c1, c2;
s1 = (char*)a;
s2 = (char*)b;
do {
c1 = *s1++;
c2 = *s2++;
if (c1 >= 'a' && c1 <= 'z')
{
c1 -= ('a' - 'A');
}
if (c2 >= 'a' && c2 <= 'z')
{
c2 -= ('a' - 'A');
}
if ( c1 == '\\' || c1 == ':' )
{
c1 = '/';
}
if ( c2 == '\\' || c2 == ':' )
{
c2 = '/';
}
// Arnout: note - sort pakfiles in reverse order. This ensures that
// later pakfiles override earlier ones. This because the vfs module
// returns a filehandle to the first file it can find (while it should
// return the filehandle to the file in the most overriding pakfile, the
// last one in the list that is).
if (c1 < c2)
{
//return -1; // strings not equal
return 1; // strings not equal
}
if (c1 > c2)
{
//return 1;
return -1;
}
} while (c1);
return 0; // strings are equal
}
// =============================================================================
// Global functions
// reads all pak files from a dir
/*!
The gamemode hacks in here will do undefined things with files called zz_*.
This is simple to fix by cleaning up the hacks, but may be better left alone
if the engine code does the same thing.
*/
void vfsInitDirectory (const char *path)
{
char filename[PATH_MAX];
GDir *dir;
GSList *dirlistptr, *dirlist = NULL;
int iGameMode; // 0: no filtering 1: SP 2: MP
if (g_numDirs == (VFS_MAXDIRS-1))
return;
// See if we are in "sp" or "mp" mapping mode
const char* gamemode = g_FuncTable.m_pfnReadProjectKey("gamemode");
if (gamemode)
{
if (strcmp (gamemode, "sp") == 0)
iGameMode = 1;
else if (strcmp (gamemode, "mp") == 0)
iGameMode = 2;
else
iGameMode = 0;
} else
iGameMode = 0;
strcpy (g_strDirs[g_numDirs], path);
vfsFixDOSName (g_strDirs[g_numDirs]);
vfsAddSlash (g_strDirs[g_numDirs]);
g_numDirs++;
if (g_bUsePak)
{
dir = g_dir_open (path, 0, NULL);
if (dir != NULL)
{
g_FuncTable.m_pfnSysPrintf("vfs directory: %s\n", path);
for(;;)
{
const char* name = g_dir_read_name(dir);
if(name == NULL)
break;
char *ext = (char*)strrchr(name, '.');
if ((ext == NULL) || (strcasecmp (ext, ".pk3") != 0))
continue;
char* direntry = g_strdup(name);
// using the same kludge as in engine to ensure consistency
switch (iGameMode)
{
case 1: // SP
if (strncmp(direntry,"sp_",3) == 0)
memcpy(direntry,"zz",2);
break;
case 2: // MP
if (strncmp(direntry,"mp_",3) == 0)
memcpy(direntry,"zz",2);
break;
}
dirlist = g_slist_append (dirlist, direntry);
}
g_dir_close (dir);
// sort them
dirlist = g_slist_sort (dirlist, vfsPakSort);
// add the entries to the vfs and free the list
while (dirlist)
{
GSList *cur = dirlist;
char* name = (char*)cur->data;
switch (iGameMode)
{
case 1: // SP
if (strncmp(name,"mp_",3) == 0)
{
g_free (name);
dirlist = g_slist_remove (cur, name);
continue;
} else if (strncmp(name,"zz_",3) == 0)
memcpy(name,"sp",2);
break;
case 2: // MP
if (strncmp(name,"sp_",3) == 0)
{
g_free (name);
dirlist = g_slist_remove (cur, name);
continue;
} else if (strncmp(name,"zz_",3) == 0)
memcpy(name,"mp",2);
break;
}
sprintf (filename, "%s/%s", path, name);
vfsInitPakFile (filename);
g_free (name);
dirlist = g_slist_remove (cur, name);
}
}
else
g_FuncTable.m_pfnSysFPrintf(SYS_WRN, "vfs directory not found: %s\n", path);
}
}
// frees all memory that we allocated
// FIXME TTimo this should be improved so that we can shutdown and restart the VFS without exiting Radiant?
// (for instance when modifying the project settings)
void vfsShutdown ()
{
while (g_unzFiles)
{
unzClose ((unzFile)g_unzFiles->data);
g_unzFiles = g_slist_remove (g_unzFiles, g_unzFiles->data);
}
// avoid dangling pointer operation (makes BC hangry)
GSList *cur = g_pakFiles;
GSList *next = cur;
while (next)
{
cur = next;
VFS_PAKFILE* file = (VFS_PAKFILE*)cur->data;
g_free (file->name);
g_free (file);
next = g_slist_remove (cur, file);
}
g_pakFiles = NULL;
}
void vfsFreeFile (void *p)
{
g_free(p);
}
GSList* vfsGetFileList (const char *dir, const char *ext)
{
return vfsGetListInternal (dir, ext, false);
}
GSList* vfsGetDirList (const char *dir)
{
return vfsGetListInternal (dir, NULL, true);
}
void vfsClearFileDirList (GSList **lst)
{
while (*lst)
{
g_free ((*lst)->data);
*lst = g_slist_remove (*lst, (*lst)->data);
}
}
int vfsGetFileCount (const char *filename, int flag)
{
int i, count = 0;
char fixed[NAME_MAX], tmp[NAME_MAX];
GSList *lst;
strcpy (fixed, filename);
vfsFixDOSName (fixed);
g_strdown (fixed);
if (!flag || (flag & VFS_SEARCH_PAK))
{
for (lst = g_pakFiles; lst != NULL; lst = g_slist_next (lst))
{
VFS_PAKFILE* file = (VFS_PAKFILE*)lst->data;
if (strcmp (file->name, fixed) == 0)
count++;
}
}
if (!flag || (flag & VFS_SEARCH_DIR))
{
for (i = 0; i < g_numDirs; i++)
{
strcpy (tmp, g_strDirs[i]);
strcat (tmp, fixed);
if (access (tmp, R_OK) == 0)
count++;
}
}
return count;
}
// open a full path file
int vfsLoadFullPathFile (const char *filename, void **bufferptr)
{
FILE *f;
long len;
f = fopen (filename, "rb");
if (f == NULL)
return -1;
fseek (f, 0, SEEK_END);
len = ftell (f);
rewind (f);
*bufferptr = g_malloc (len+1);
if (*bufferptr == NULL)
return -1;
fread (*bufferptr, 1, len, f);
fclose (f);
// we need to end the buffer with a 0
((char*) (*bufferptr))[len] = 0;
return len;
}
// NOTE: when loading a file, you have to allocate one extra byte and set it to \0
int vfsLoadFile (const char *filename, void **bufferptr, int index)
{
int i, count = 0;
char tmp[NAME_MAX], fixed[NAME_MAX];
GSList *lst;
*bufferptr = NULL;
strcpy (fixed, filename);
vfsFixDOSName (fixed);
g_strdown (fixed);
for (i = 0; i < g_numDirs; i++)
{
strcpy (tmp, g_strDirs[i]);
strcat (tmp, filename);
if (access (tmp, R_OK) == 0)
{
if (count == index)
{
return vfsLoadFullPathFile(tmp,bufferptr);
}
count++;
}
}
for (lst = g_pakFiles; lst != NULL; lst = g_slist_next (lst))
{
VFS_PAKFILE* file = (VFS_PAKFILE*)lst->data;
if (strcmp (file->name, fixed) != 0)
continue;
if (count == index)
{
memcpy (file->zipfile, &file->zipinfo, sizeof (unz_s));
if (unzOpenCurrentFile (file->zipfile) != UNZ_OK)
return -1;
*bufferptr = g_malloc (file->size+1);
// we need to end the buffer with a 0
((char*) (*bufferptr))[file->size] = 0;
i = unzReadCurrentFile (file->zipfile , *bufferptr, file->size);
unzCloseCurrentFile (file->zipfile);
if (i > 0)
return file->size;
else
return -1;
}
count++;
}
return -1;
}
//#ifdef _DEBUG
#if 1
#define DBG_RLTPATH
#endif
/*!
\param shorten will try to match against the short version
http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=144
recent switch back to short path names in project settings has broken some stuff
with shorten == true, we will convert in to short version before looking for root
FIXME WAAA .. the stuff below is much more simple on linux .. add appropriate #ifdef
*/
char* vfsExtractRelativePath_short(const char *in, bool shorten)
{
int i;
char l_in[PATH_MAX];
char check[PATH_MAX];
static char out[PATH_MAX];
out[0] = 0;
#ifdef DBG_RLTPATH
Sys_Printf("vfsExtractRelativePath: %s\n", in);
#endif
#ifdef _WIN32
if (shorten)
{
// make it short
if (GetShortPathName(in, l_in, PATH_MAX) == 0)
{
#ifdef DBG_RLTPATH
Sys_Printf("GetShortPathName failed\n");
#endif
return NULL;
}
}
else
{
strcpy(l_in,in);
}
vfsCleanFileName(l_in);
#else
strcpy(l_in, in);
vfsCleanFileName(l_in);
#endif // ifdef WIN32
#ifdef DBG_RLTPATH
Sys_Printf("cleaned path: %s\n", l_in);
#endif
for (i = 0; i < g_numDirs; i++)
{
strcpy(check,g_strDirs[i]);
vfsCleanFileName(check);
#ifdef DBG_RLTPATH
Sys_Printf("Matching against %s\n", check);
#endif
// try to find a match
if (strstr(l_in, check))
{
strcpy(out,l_in+strlen(check)+1);
break;
}
}
if (out[0]!=0)
{
#ifdef DBG_RLTPATH
Sys_Printf("vfsExtractRelativePath: success\n");
#endif
return out;
}
#ifdef DBG_RLTPATH
Sys_Printf("vfsExtractRelativePath: failed\n");
#endif
return NULL;
}
// FIXME TTimo: this and the above should be merged at some point
char* vfsExtractRelativePath(const char *in)
{
static char out[PATH_MAX];
unsigned int i, count;
char *chunk, *backup = NULL; // those point to out stuff
char *ret = vfsExtractRelativePath_short(in, false);
if (!ret)
{
#ifdef DBG_RLTPATH
Sys_Printf("trying with a short version\n");
#endif
ret = vfsExtractRelativePath_short(in, true);
if (ret)
{
// ok, but we have a relative short version now
// hack the long relative version out of here
count = 0;
for(i=0;i<strlen(ret);i++)
{
if (ret[i]=='/')
count++;
}
// this is the clean, not short version
strcpy(out, in);
vfsCleanFileName(out);
for(i=0;i<=count;i++)
{
chunk = strrchr(out, '/');
if (backup)
backup[0] = '/';
chunk[0] = '\0';
backup = chunk;
}
return chunk+1;
}
}
return ret;
}
void vfsCleanFileName(char *in)
{
strlwr(in);
vfsFixDOSName(in);
int n = strlen(in);
if (in[n-1] == '/')
in[n-1] = '\0';
}
// HYDRA: this now searches VFS/PAK files in addition to the filesystem
// if FLAG is unspecified then ONLY dirs are searched.
// PAK's are searched before DIRs to mimic engine behaviour
// index is ignored when searching PAK files.
// see ifilesystem.h
char* vfsGetFullPath(const char *in, int index, int flag)
{
int count = 0;
static char out[PATH_MAX];
char tmp[NAME_MAX];
int i;
if (flag & VFS_SEARCH_PAK)
{
char fixed[NAME_MAX];
GSList *lst;
strcpy (fixed, in);
vfsFixDOSName (fixed);
g_strdown (fixed);
for (lst = g_pakFiles; lst != NULL; lst = g_slist_next (lst))
{
VFS_PAKFILE* file = (VFS_PAKFILE*)lst->data;
char *ptr,*lastptr;
lastptr = file->name;
while (ptr = strchr(lastptr,'/'))
lastptr = ptr+1;
if (strcmp (lastptr, fixed) == 0)
{
strncpy(out,file->name,PATH_MAX);
return out;
}
}
}
if (!flag || (flag & VFS_SEARCH_DIR))
{
for (i = 0; i < g_numDirs; i++)
{
strcpy (tmp, g_strDirs[i]);
strcat (tmp, in);
if (access (tmp, R_OK) == 0)
{
if (count == index)
{
strcpy (out, tmp);
return out;
}
count++;
}
}
}
return NULL;
}
// TODO TTimo on linux the base prompt is ~/.q3a/<fs_game>
// given the file dialog, we could push the strFSBasePath and ~/.q3a into the directory shortcuts
// FIXME TTimo is this really a VFS functionality?
// actually .. this should be the decision of the core isn't it?
// or .. add an API so that the base prompt can be set during VFS init
const char* vfsBasePromptPath()
{
#ifdef _WIN32
static char* path = "C:";
#else
static char* path = "/";
#endif
return path;
}