/*
 * Setupapi install routines
 *
 * Copyright 2002 Alexandre Julliard for CodeWeavers
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <memory.h>

#include "windef.h"
#include "winbase.h"
#include "winternl.h"
#include "winerror.h"
#include "setupapi.h"
#include "wine/unicode.h"
#include "setupapi_private.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(setupapi);

/* info passed to callback functions dealing with files */
struct files_callback_info
{
    HSPFILEQ queue;
    PCWSTR   src_root;
    UINT     copy_flags;
    HINF     layout;
};

/* info passed to callback functions dealing with the registry */
struct registry_callback_info
{
    HKEY default_root;
    BOOL delete;
};

typedef BOOL (*iterate_fields_func)( HINF hinf, PCWSTR field, void *arg );

/* Unicode constants */
static const WCHAR CopyFiles[]  = {'C','o','p','y','F','i','l','e','s',0};
static const WCHAR DelFiles[]   = {'D','e','l','F','i','l','e','s',0};
static const WCHAR RenFiles[]   = {'R','e','n','F','i','l','e','s',0};
static const WCHAR Ini2Reg[]    = {'I','n','i','2','R','e','g',0};
static const WCHAR LogConf[]    = {'L','o','g','C','o','n','f',0};
static const WCHAR AddReg[]     = {'A','d','d','R','e','g',0};
static const WCHAR DelReg[]     = {'D','e','l','R','e','g',0};
static const WCHAR UpdateInis[] = {'U','p','d','a','t','e','I','n','i','s',0};
static const WCHAR UpdateIniFields[] = {'U','p','d','a','t','e','I','n','i','F','i','e','l','d','s',0};


/***********************************************************************
 *            get_field_string
 *
 * Retrieve the contents of a field, dynamically growing the buffer if necessary.
 */
static WCHAR *get_field_string( INFCONTEXT *context, DWORD index, WCHAR *buffer,
                                WCHAR *static_buffer, DWORD *size )
{
    DWORD required;

    if (SetupGetStringFieldW( context, index, buffer, *size, &required )) return buffer;
    if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
    {
        /* now grow the buffer */
        if (buffer != static_buffer) HeapFree( GetProcessHeap(), 0, buffer );
        if (!(buffer = HeapAlloc( GetProcessHeap(), 0, required*sizeof(WCHAR) ))) return NULL;
        *size = required;
        if (SetupGetStringFieldW( context, index, buffer, *size, &required )) return buffer;
    }
    if (buffer != static_buffer) HeapFree( GetProcessHeap(), 0, buffer );
    return NULL;
}


/***********************************************************************
 *            copy_files_callback
 *
 * Called once for each CopyFiles entry in a given section.
 */
static BOOL copy_files_callback( HINF hinf, PCWSTR field, void *arg )
{
    struct files_callback_info *info = arg;

    if (field[0] == '@')  /* special case: copy single file */
        SetupQueueDefaultCopyW( info->queue, info->layout, info->src_root, NULL, field, info->copy_flags );
    else
        SetupQueueCopySectionW( info->queue, info->src_root, info->layout, hinf, field, info->copy_flags );
    return TRUE;
}


/***********************************************************************
 *            delete_files_callback
 *
 * Called once for each DelFiles entry in a given section.
 */
static BOOL delete_files_callback( HINF hinf, PCWSTR field, void *arg )
{
    struct files_callback_info *info = arg;
    SetupQueueDeleteSectionW( info->queue, hinf, 0, field );
    return TRUE;
}


/***********************************************************************
 *            rename_files_callback
 *
 * Called once for each RenFiles entry in a given section.
 */
static BOOL rename_files_callback( HINF hinf, PCWSTR field, void *arg )
{
    struct files_callback_info *info = arg;
    SetupQueueRenameSectionW( info->queue, hinf, 0, field );
    return TRUE;
}


/***********************************************************************
 *            get_root_key
 *
 * Retrieve the registry root key from its name.
 */
static HKEY get_root_key( const WCHAR *name, HKEY def_root )
{
    static const WCHAR HKCR[] = {'H','K','C','R',0};
    static const WCHAR HKCU[] = {'H','K','C','U',0};
    static const WCHAR HKLM[] = {'H','K','L','M',0};
    static const WCHAR HKU[]  = {'H','K','U',0};
    static const WCHAR HKR[]  = {'H','K','R',0};

    if (!strcmpiW( name, HKCR )) return HKEY_CLASSES_ROOT;
    if (!strcmpiW( name, HKCU )) return HKEY_CURRENT_USER;
    if (!strcmpiW( name, HKLM )) return HKEY_LOCAL_MACHINE;
    if (!strcmpiW( name, HKU )) return HKEY_USERS;
    if (!strcmpiW( name, HKR )) return def_root;
    return 0;
}


/***********************************************************************
 *            append_multi_sz_value
 *
 * Append a multisz string to a multisz registry value.
 */
static void append_multi_sz_value( HKEY hkey, const WCHAR *value, const WCHAR *strings,
                                   DWORD str_size )
{
    DWORD size, type, total;
    WCHAR *buffer, *p;

    if (RegQueryValueExW( hkey, value, NULL, &type, NULL, &size )) return;
    if (type != REG_MULTI_SZ) return;

    if (!(buffer = HeapAlloc( GetProcessHeap(), 0, (size + str_size) * sizeof(WCHAR) ))) return;
    if (RegQueryValueExW( hkey, value, NULL, NULL, (BYTE *)buffer, &size )) goto done;

    /* compare each string against all the existing ones */
    total = size;
    while (*strings)
    {
        int len = strlenW(strings) + 1;

        for (p = buffer; *p; p += strlenW(p) + 1)
            if (!strcmpiW( p, strings )) break;

        if (!*p)  /* not found, need to append it */
        {
            memcpy( p, strings, len * sizeof(WCHAR) );
            p[len] = 0;
            total += len;
        }
        strings += len;
    }
    if (total != size)
    {
        TRACE( "setting value %s to %s\n", debugstr_w(value), debugstr_w(buffer) );
        RegSetValueExW( hkey, value, 0, REG_MULTI_SZ, (BYTE *)buffer, total );
    }
 done:
    HeapFree( GetProcessHeap(), 0, buffer );
}


/***********************************************************************
 *            delete_multi_sz_value
 *
 * Remove a string from a multisz registry value.
 */
static void delete_multi_sz_value( HKEY hkey, const WCHAR *value, const WCHAR *string )
{
    DWORD size, type;
    WCHAR *buffer, *src, *dst;

    if (RegQueryValueExW( hkey, value, NULL, &type, NULL, &size )) return;
    if (type != REG_MULTI_SZ) return;
    /* allocate double the size, one for value before and one for after */
    if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size * 2 * sizeof(WCHAR) ))) return;
    if (RegQueryValueExW( hkey, value, NULL, NULL, (BYTE *)buffer, &size )) goto done;
    src = buffer;
    dst = buffer + size;
    while (*src)
    {
        int len = strlenW(src) + 1;
        if (strcmpiW( src, string ))
        {
            memcpy( dst, src, len * sizeof(WCHAR) );
            dst += len;
        }
        src += len;
    }
    *dst++ = 0;
    if (dst != buffer + 2*size)  /* did we remove something? */
    {
        TRACE( "setting value %s to %s\n", debugstr_w(value), debugstr_w(buffer + size) );
        RegSetValueExW( hkey, value, 0, REG_MULTI_SZ,
                        (BYTE *)(buffer + size), dst - (buffer + size) );
    }
 done:
    HeapFree( GetProcessHeap(), 0, buffer );
}


/***********************************************************************
 *            do_reg_operation
 *
 * Perform an add/delete registry operation depending on the flags.
 */
static BOOL do_reg_operation( HKEY hkey, const WCHAR *value, INFCONTEXT *context, INT flags )
{
    DWORD type, size;

    if (flags & (FLG_ADDREG_DELREG_BIT | FLG_ADDREG_DELVAL))  /* deletion */
    {
        if (*value && !(flags & FLG_DELREG_KEYONLY_COMMON))
        {
            if ((flags & FLG_DELREG_MULTI_SZ_DELSTRING) == FLG_DELREG_MULTI_SZ_DELSTRING)
            {
                WCHAR *str;

                if (!SetupGetStringFieldW( context, 5, NULL, 0, &size ) || !size) return TRUE;
                if (!(str = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) ))) return FALSE;
                SetupGetStringFieldW( context, 5, str, size, NULL );
                delete_multi_sz_value( hkey, value, str );
                HeapFree( GetProcessHeap(), 0, str );
            }
            else RegDeleteValueW( hkey, value );
        }
        else RegDeleteKeyW( hkey, NULL );
        return TRUE;
    }

    if (flags & (FLG_ADDREG_KEYONLY|FLG_ADDREG_KEYONLY_COMMON)) return TRUE;

    if (flags & (FLG_ADDREG_NOCLOBBER|FLG_ADDREG_OVERWRITEONLY))
    {
        BOOL exists = !RegQueryValueExW( hkey, value, NULL, NULL, NULL, NULL );
        if (exists && (flags & FLG_ADDREG_NOCLOBBER)) return TRUE;
        if (!exists & (flags & FLG_ADDREG_OVERWRITEONLY)) return TRUE;
    }

    switch(flags & FLG_ADDREG_TYPE_MASK)
    {
    case FLG_ADDREG_TYPE_SZ:        type = REG_SZ; break;
    case FLG_ADDREG_TYPE_MULTI_SZ:  type = REG_MULTI_SZ; break;
    case FLG_ADDREG_TYPE_EXPAND_SZ: type = REG_EXPAND_SZ; break;
    case FLG_ADDREG_TYPE_BINARY:    type = REG_BINARY; break;
    case FLG_ADDREG_TYPE_DWORD:     type = REG_DWORD; break;
    case FLG_ADDREG_TYPE_NONE:      type = REG_NONE; break;
    default:                        type = flags >> 16; break;
    }

    if (!(flags & FLG_ADDREG_BINVALUETYPE) ||
        (type == REG_DWORD && SetupGetFieldCount(context) == 5))
    {
        static const WCHAR empty;
        WCHAR *str = NULL;

        if (type == REG_MULTI_SZ)
        {
            if (!SetupGetMultiSzFieldW( context, 5, NULL, 0, &size )) size = 0;
            if (size)
            {
                if (!(str = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) ))) return FALSE;
                SetupGetMultiSzFieldW( context, 5, str, size, NULL );
            }
            if (flags & FLG_ADDREG_APPEND)
            {
                if (!str) return TRUE;
                append_multi_sz_value( hkey, value, str, size );
                HeapFree( GetProcessHeap(), 0, str );
                return TRUE;
            }
            /* else fall through to normal string handling */
        }
        else
        {
            if (!SetupGetStringFieldW( context, 5, NULL, 0, &size )) size = 0;
            if (size)
            {
                if (!(str = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) ))) return FALSE;
                SetupGetStringFieldW( context, 5, str, size, NULL );
            }
        }

        if (type == REG_DWORD)
        {
            DWORD dw = str ? strtolW( str, NULL, 16 ) : 0;
            TRACE( "setting dword %s to %lx\n", debugstr_w(value), dw );
            RegSetValueExW( hkey, value, 0, type, (BYTE *)&dw, sizeof(dw) );
        }
        else
        {
            TRACE( "setting value %s to %s\n", debugstr_w(value), debugstr_w(str) );
            if (str) RegSetValueExW( hkey, value, 0, type, (BYTE *)str, size * sizeof(WCHAR) );
            else RegSetValueExW( hkey, value, 0, type, (BYTE *)&empty, sizeof(WCHAR) );
        }
        HeapFree( GetProcessHeap(), 0, str );
        return TRUE;
    }
    else  /* get the binary data */
    {
        BYTE *data = NULL;

        if (!SetupGetBinaryField( context, 5, NULL, 0, &size )) size = 0;
        if (size)
        {
            if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
            TRACE( "setting binary data %s len %ld\n", debugstr_w(value), size );
            SetupGetBinaryField( context, 5, data, size, NULL );
        }
        RegSetValueExW( hkey, value, 0, type, data, size );
        HeapFree( GetProcessHeap(), 0, data );
        return TRUE;
    }
}


/***********************************************************************
 *            registry_callback
 *
 * Called once for each AddReg and DelReg entry in a given section.
 */
static BOOL registry_callback( HINF hinf, PCWSTR field, void *arg )
{
    struct registry_callback_info *info = arg;
    INFCONTEXT context;
    HKEY root_key, hkey;

    BOOL ok = SetupFindFirstLineW( hinf, field, NULL, &context );

    for (; ok; ok = SetupFindNextLine( &context, &context ))
    {
        WCHAR buffer[MAX_INF_STRING_LENGTH];
        INT flags;

        /* get root */
        if (!SetupGetStringFieldW( &context, 1, buffer, sizeof(buffer)/sizeof(WCHAR), NULL ))
            continue;
        if (!(root_key = get_root_key( buffer, info->default_root )))
            continue;

        /* get key */
        if (!SetupGetStringFieldW( &context, 2, buffer, sizeof(buffer)/sizeof(WCHAR), NULL ))
            *buffer = 0;

        /* get flags */
        if (!SetupGetIntField( &context, 4, &flags )) flags = 0;

        if (!info->delete)
        {
            if (flags & FLG_ADDREG_DELREG_BIT) continue;  /* ignore this entry */
        }
        else
        {
            if (!flags) flags = FLG_ADDREG_DELREG_BIT;
            else if (!(flags & FLG_ADDREG_DELREG_BIT)) continue;  /* ignore this entry */
        }

        if (info->delete || (flags & FLG_ADDREG_OVERWRITEONLY))
        {
            if (RegOpenKeyW( root_key, buffer, &hkey )) continue;  /* ignore if it doesn't exist */
        }
        else if (RegCreateKeyW( root_key, buffer, &hkey ))
        {
            ERR( "could not create key %p %s\n", root_key, debugstr_w(buffer) );
            continue;
        }
        TRACE( "key %p %s\n", root_key, debugstr_w(buffer) );

        /* get value name */
        if (!SetupGetStringFieldW( &context, 3, buffer, sizeof(buffer)/sizeof(WCHAR), NULL ))
            *buffer = 0;

        /* and now do it */
        if (!do_reg_operation( hkey, buffer, &context, flags ))
        {
            RegCloseKey( hkey );
            return FALSE;
        }
        RegCloseKey( hkey );
    }
    return TRUE;
}


static BOOL update_ini_callback( HINF hinf, PCWSTR field, void *arg )
{
    INFCONTEXT context;

    BOOL ok = SetupFindFirstLineW( hinf, field, NULL, &context );

    for (; ok; ok = SetupFindNextLine( &context, &context ))
    {
        WCHAR buffer[MAX_INF_STRING_LENGTH];
        WCHAR  filename[MAX_INF_STRING_LENGTH];
        WCHAR  section[MAX_INF_STRING_LENGTH];
        WCHAR  entry[MAX_INF_STRING_LENGTH];
        WCHAR  string[MAX_INF_STRING_LENGTH];
        LPWSTR divider;

        if (!SetupGetStringFieldW( &context, 1, filename,
                                   sizeof(filename)/sizeof(WCHAR), NULL ))
            continue;

        if (!SetupGetStringFieldW( &context, 2, section,
                                   sizeof(section)/sizeof(WCHAR), NULL ))
            continue;

        if (!SetupGetStringFieldW( &context, 4, buffer,
                                   sizeof(buffer)/sizeof(WCHAR), NULL ))
            continue;

        divider = strchrW(buffer,'=');
        if (divider)
        {
            *divider = 0;
            strcpyW(entry,buffer);
            divider++;
            strcpyW(string,divider);
        }
        else
        {
            strcpyW(entry,buffer);
            string[0]=0;
        }

        TRACE("Writing %s = %s in %s of file %s\n",debugstr_w(entry),
               debugstr_w(string),debugstr_w(section),debugstr_w(filename));
        WritePrivateProfileStringW(section,entry,string,filename);

    }
    return TRUE;
}

static BOOL update_ini_fields_callback( HINF hinf, PCWSTR field, void *arg )
{
    FIXME( "should update ini fields %s\n", debugstr_w(field) );
    return TRUE;
}

static BOOL ini2reg_callback( HINF hinf, PCWSTR field, void *arg )
{
    FIXME( "should do ini2reg %s\n", debugstr_w(field) );
    return TRUE;
}

static BOOL logconf_callback( HINF hinf, PCWSTR field, void *arg )
{
    FIXME( "should do logconf %s\n", debugstr_w(field) );
    return TRUE;
}


/***********************************************************************
 *            iterate_section_fields
 *
 * Iterate over all fields of a certain key of a certain section
 */
static BOOL iterate_section_fields( HINF hinf, PCWSTR section, PCWSTR key,
                                    iterate_fields_func callback, void *arg )
{
    WCHAR static_buffer[200];
    WCHAR *buffer = static_buffer;
    DWORD size = sizeof(static_buffer)/sizeof(WCHAR);
    INFCONTEXT context;
    BOOL ret = FALSE;

    BOOL ok = SetupFindFirstLineW( hinf, section, key, &context );
    while (ok)
    {
        UINT i, count = SetupGetFieldCount( &context );
        for (i = 1; i <= count; i++)
        {
            if (!(buffer = get_field_string( &context, i, buffer, static_buffer, &size )))
                goto done;
            if (!callback( hinf, buffer, arg ))
            {
                ERR("callback failed for %s %s\n", debugstr_w(section), debugstr_w(buffer) );
                goto done;
            }
        }
        ok = SetupFindNextMatchLineW( &context, key, &context );
    }
    ret = TRUE;
 done:
    if (buffer && buffer != static_buffer) HeapFree( GetProcessHeap(), 0, buffer );
    return ret;
}


/***********************************************************************
 *            SetupInstallFilesFromInfSectionA   (SETUPAPI.@)
 */
BOOL WINAPI SetupInstallFilesFromInfSectionA( HINF hinf, HINF hlayout, HSPFILEQ queue,
                                              PCSTR section, PCSTR src_root, UINT flags )
{
    UNICODE_STRING sectionW;
    BOOL ret = FALSE;

    if (!RtlCreateUnicodeStringFromAsciiz( &sectionW, section ))
    {
        SetLastError( ERROR_NOT_ENOUGH_MEMORY );
        return FALSE;
    }
    if (!src_root)
        ret = SetupInstallFilesFromInfSectionW( hinf, hlayout, queue, sectionW.Buffer,
                                                NULL, flags );
    else
    {
        UNICODE_STRING srcW;
        if (RtlCreateUnicodeStringFromAsciiz( &srcW, src_root ))
        {
            ret = SetupInstallFilesFromInfSectionW( hinf, hlayout, queue, sectionW.Buffer,
                                                    srcW.Buffer, flags );
            RtlFreeUnicodeString( &srcW );
        }
        else SetLastError( ERROR_NOT_ENOUGH_MEMORY );
    }
    RtlFreeUnicodeString( &sectionW );
    return ret;
}


/***********************************************************************
 *            SetupInstallFilesFromInfSectionW   (SETUPAPI.@)
 */
BOOL WINAPI SetupInstallFilesFromInfSectionW( HINF hinf, HINF hlayout, HSPFILEQ queue,
                                              PCWSTR section, PCWSTR src_root, UINT flags )
{
    struct files_callback_info info;

    info.queue      = queue;
    info.src_root   = src_root;
    info.copy_flags = flags;
    info.layout     = hlayout;
    return iterate_section_fields( hinf, section, CopyFiles, copy_files_callback, &info );
}


/***********************************************************************
 *            SetupInstallFromInfSectionA   (SETUPAPI.@)
 */
BOOL WINAPI SetupInstallFromInfSectionA( HWND owner, HINF hinf, PCSTR section, UINT flags,
                                         HKEY key_root, PCSTR src_root, UINT copy_flags,
                                         PSP_FILE_CALLBACK_A callback, PVOID context,
                                         HDEVINFO devinfo, PSP_DEVINFO_DATA devinfo_data )
{
    UNICODE_STRING sectionW, src_rootW;
    struct callback_WtoA_context ctx;
    BOOL ret = FALSE;

    src_rootW.Buffer = NULL;
    if (src_root && !RtlCreateUnicodeStringFromAsciiz( &src_rootW, src_root ))
    {
        SetLastError( ERROR_NOT_ENOUGH_MEMORY );
        return FALSE;
    }

    if (RtlCreateUnicodeStringFromAsciiz( &sectionW, section ))
    {
        ctx.orig_context = context;
        ctx.orig_handler = callback;
        ret = SetupInstallFromInfSectionW( owner, hinf, sectionW.Buffer, flags, key_root,
                                           src_rootW.Buffer, copy_flags, QUEUE_callback_WtoA,
                                           &ctx, devinfo, devinfo_data );
        RtlFreeUnicodeString( &sectionW );
    }
    else SetLastError( ERROR_NOT_ENOUGH_MEMORY );

    RtlFreeUnicodeString( &src_rootW );
    return ret;
}


/***********************************************************************
 *            SetupInstallFromInfSectionW   (SETUPAPI.@)
 */
BOOL WINAPI SetupInstallFromInfSectionW( HWND owner, HINF hinf, PCWSTR section, UINT flags,
                                         HKEY key_root, PCWSTR src_root, UINT copy_flags,
                                         PSP_FILE_CALLBACK_W callback, PVOID context,
                                         HDEVINFO devinfo, PSP_DEVINFO_DATA devinfo_data )
{
    if (flags & SPINST_FILES)
    {
        struct files_callback_info info;
        HSPFILEQ queue;
        BOOL ret;

        if (!(queue = SetupOpenFileQueue())) return FALSE;
        info.queue      = queue;
        info.src_root   = src_root;
        info.copy_flags = copy_flags;
        info.layout     = hinf;
        ret = (iterate_section_fields( hinf, section, CopyFiles, copy_files_callback, &info ) &&
               iterate_section_fields( hinf, section, DelFiles, delete_files_callback, &info ) &&
               iterate_section_fields( hinf, section, RenFiles, rename_files_callback, &info ) &&
               SetupCommitFileQueueW( owner, queue, callback, context ));
        SetupCloseFileQueue( queue );
        if (!ret) return FALSE;
    }
    if (flags & SPINST_INIFILES)
    {
        if (!iterate_section_fields( hinf, section, UpdateInis, update_ini_callback, NULL ) ||
            !iterate_section_fields( hinf, section, UpdateIniFields,
                                     update_ini_fields_callback, NULL ))
            return FALSE;
    }
    if (flags & SPINST_INI2REG)
    {
        if (!iterate_section_fields( hinf, section, Ini2Reg, ini2reg_callback, NULL ))
            return FALSE;
    }

    if (flags & SPINST_LOGCONFIG)
    {
        if (!iterate_section_fields( hinf, section, LogConf, logconf_callback, NULL ))
            return FALSE;
    }

    if (flags & SPINST_REGISTRY)
    {
        struct registry_callback_info info;

        info.default_root = key_root;
        info.delete = TRUE;
        if (!iterate_section_fields( hinf, section, DelReg, registry_callback, &info ))
            return FALSE;
        info.delete = FALSE;
        if (!iterate_section_fields( hinf, section, AddReg, registry_callback, &info ))
            return FALSE;
    }
    if (flags & (SPINST_BITREG|SPINST_REGSVR|SPINST_UNREGSVR|SPINST_PROFILEITEMS|SPINST_COPYINF))
        FIXME( "unsupported flags %x\n", flags );
    return TRUE;
}
