Sweden-Number/dlls/kernel/format_msg.c

547 lines
14 KiB
C

/*
* FormatMessage implementation
*
* Copyright 1996 Marcus Meissner
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winnls.h"
#include "heap.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(resource);
/* Messages...used by FormatMessage32* (KERNEL32.something)
*
* They can be specified either directly or using a message ID and
* loading them from the resource.
*
* The resourcedata has following format:
* start:
* 0: DWORD nrofentries
* nrofentries * subentry:
* 0: DWORD firstentry
* 4: DWORD lastentry
* 8: DWORD offset from start to the stringentries
*
* (lastentry-firstentry) * stringentry:
* 0: WORD len (0 marks end) [ includes the 4 byte header length ]
* 2: WORD flags
* 4: CHAR[len-4]
* (stringentry i of a subentry refers to the ID 'firstentry+i')
*
* Yes, ANSI strings in win32 resources. Go figure.
*/
/**********************************************************************
* load_messageA (internal)
*/
static INT load_messageA( HMODULE instance, UINT id, WORD lang,
LPSTR buffer, INT buflen )
{
HGLOBAL hmem;
HRSRC hrsrc;
PMESSAGE_RESOURCE_DATA mrd;
PMESSAGE_RESOURCE_BLOCK mrb;
PMESSAGE_RESOURCE_ENTRY mre;
int i,slen;
TRACE("instance = %08lx, id = %08lx, buffer = %p, length = %ld\n", (DWORD)instance, (DWORD)id, buffer, (DWORD)buflen);
/*FIXME: I am not sure about the '1' ... But I've only seen those entries*/
hrsrc = FindResourceExW(instance,RT_MESSAGELISTW,(LPWSTR)1,lang);
if (!hrsrc) return 0;
hmem = LoadResource( instance, hrsrc );
if (!hmem) return 0;
mrd = (PMESSAGE_RESOURCE_DATA)LockResource(hmem);
mre = NULL;
mrb = &(mrd->Blocks[0]);
for (i=mrd->NumberOfBlocks;i--;) {
if ((id>=mrb->LowId) && (id<=mrb->HighId)) {
mre = (PMESSAGE_RESOURCE_ENTRY)(((char*)mrd)+mrb->OffsetToEntries);
id -= mrb->LowId;
break;
}
mrb++;
}
if (!mre)
return 0;
for (i=id;i--;) {
if (!mre->Length)
return 0;
mre = (PMESSAGE_RESOURCE_ENTRY)(((char*)mre)+mre->Length);
}
slen=mre->Length;
TRACE(" - strlen=%d\n",slen);
i = min(buflen - 1, slen);
if (buffer == NULL)
return slen;
if (i>0) {
lstrcpynA(buffer,(char*)mre->Text,i);
buffer[i]=0;
} else {
if (buflen>1) {
buffer[0]=0;
return 0;
}
}
if (buffer)
TRACE("'%s' copied !\n", buffer);
return i;
}
#if 0 /* FIXME */
/**********************************************************************
* load_messageW (internal)
*/
static INT load_messageW( HMODULE instance, UINT id, WORD lang,
LPWSTR buffer, INT buflen )
{
INT retval;
LPSTR buffer2 = NULL;
if (buffer && buflen)
buffer2 = HeapAlloc( GetProcessHeap(), 0, buflen );
retval = load_messageA(instance,id,lang,buffer2,buflen);
if (buffer)
{
if (retval) {
lstrcpynAtoW( buffer, buffer2, buflen );
retval = lstrlenW( buffer );
}
HeapFree( GetProcessHeap(), 0, buffer2 );
}
return retval;
}
#endif
/***********************************************************************
* FormatMessageA (KERNEL32.138)
* FIXME: missing wrap,
*/
DWORD WINAPI FormatMessageA(
DWORD dwFlags,
LPCVOID lpSource,
DWORD dwMessageId,
DWORD dwLanguageId,
LPSTR lpBuffer,
DWORD nSize,
LPDWORD args /* va_list *args */
) {
#ifdef __i386__
/* This implementation is completely dependant on the format of the va_list on x86 CPUs */
LPSTR target,t;
DWORD talloced;
LPSTR from,f;
DWORD width = dwFlags & FORMAT_MESSAGE_MAX_WIDTH_MASK;
BOOL eos = FALSE;
INT bufsize;
HMODULE hmodule = (HMODULE)lpSource;
CHAR ch;
TRACE("(0x%lx,%p,%ld,0x%lx,%p,%ld,%p)\n",
dwFlags,lpSource,dwMessageId,dwLanguageId,lpBuffer,nSize,args);
if ((dwFlags & FORMAT_MESSAGE_FROM_SYSTEM)
&& (dwFlags & FORMAT_MESSAGE_FROM_HMODULE)) return 0;
if ((dwFlags & FORMAT_MESSAGE_FROM_STRING)
&&((dwFlags & FORMAT_MESSAGE_FROM_SYSTEM)
|| (dwFlags & FORMAT_MESSAGE_FROM_HMODULE))) return 0;
if (width && width != FORMAT_MESSAGE_MAX_WIDTH_MASK)
FIXME("line wrapping (%lu) not supported.\n", width);
from = NULL;
if (dwFlags & FORMAT_MESSAGE_FROM_STRING) {
from = HEAP_strdupA( GetProcessHeap(), 0, (LPSTR)lpSource);
}
else {
dwMessageId &= 0xFFFF;
if (dwFlags & FORMAT_MESSAGE_FROM_SYSTEM)
hmodule = GetModuleHandleA("kernel32");
bufsize=load_messageA(hmodule,dwMessageId,dwLanguageId,NULL,100);
if (!bufsize) {
if (dwLanguageId) {
SetLastError (ERROR_RESOURCE_LANG_NOT_FOUND);
return 0;
}
bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_NEUTRAL,SUBLANG_NEUTRAL),NULL,100);
if (!bufsize) bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),NULL,100);
if (!bufsize) bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_NEUTRAL,SUBLANG_SYS_DEFAULT),NULL,100);
if (!bufsize) bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_NEUTRAL,SUBLANG_SYS_DEFAULT),NULL,100);
if (!bufsize) bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),NULL,100);
if (!bufsize) {
SetLastError (ERROR_RESOURCE_LANG_NOT_FOUND);
return 0;
}
}
from = HeapAlloc( GetProcessHeap(), 0, bufsize + 1 );
load_messageA(hmodule,dwMessageId,dwLanguageId,from,bufsize+1);
}
target = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, 100);
t = target;
talloced= 100;
#define ADD_TO_T(c) do { \
*t++=c;\
if (t-target == talloced) {\
target = (char*)HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,talloced*2);\
t = target+talloced;\
talloced*=2;\
}\
} while (0)
if (from) {
f=from;
while (*f && !eos) {
if (*f=='%') {
int insertnr;
char *fmtstr,*x,*lastf;
DWORD *argliststart;
fmtstr = NULL;
lastf = f;
f++;
if (!*f) {
ADD_TO_T('%');
continue;
}
switch (*f) {
case '1':case '2':case '3':case '4':case '5':
case '6':case '7':case '8':case '9':
insertnr=*f-'0';
switch (f[1]) {
case '0':case '1':case '2':case '3':
case '4':case '5':case '6':case '7':
case '8':case '9':
f++;
insertnr=insertnr*10+*f-'0';
f++;
break;
default:
f++;
break;
}
if (*f=='!') {
f++;
if (NULL!=(x=strchr(f,'!'))) {
*x='\0';
fmtstr=HeapAlloc(GetProcessHeap(),0,strlen(f)+2);
sprintf(fmtstr,"%%%s",f);
f=x+1;
} else {
fmtstr=HeapAlloc(GetProcessHeap(),0,strlen(f)+2);
sprintf(fmtstr,"%%%s",f);
f+=strlen(f); /*at \0*/
}
} else
if(!args)
break;
else
fmtstr=HEAP_strdupA(GetProcessHeap(),0,"%s");
if (args) {
int sz;
LPSTR b = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sz = 100);
if (dwFlags & FORMAT_MESSAGE_ARGUMENT_ARRAY)
argliststart=args+insertnr-1;
else
argliststart=(*(DWORD**)args)+insertnr-1;
/* CMF - This makes a BIG assumption about va_list */
while (vsnprintf(b, sz, fmtstr, (va_list) argliststart) < 0) {
b = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, b, sz += 100);
}
for (x=b; *x; x++) ADD_TO_T(*x);
HeapFree(GetProcessHeap(),0,b);
} else {
/* NULL args - copy formatstr
* (probably wrong)
*/
while ((lastf<f)&&(*lastf)) {
ADD_TO_T(*lastf++);
}
}
HeapFree(GetProcessHeap(),0,fmtstr);
break;
case 'n':
ADD_TO_T('\r');
ADD_TO_T('\n');
f++;
break;
case '0':
eos = TRUE;
f++;
break;
default:
ADD_TO_T(*f++);
break;
}
} else {
ch = *f;
f++;
if (ch == '\r')
{
if (*f == '\n')
f++;
ADD_TO_T(' ');
}
else
if (ch == '\n')
{
ADD_TO_T('\r');
ADD_TO_T('\n');
}
else
ADD_TO_T(ch);
}
}
*t='\0';
}
talloced = strlen(target)+1;
if (nSize && talloced<nSize) {
target = (char*)HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,nSize);
}
TRACE("-- %s\n",debugstr_a(target));
if (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) {
*((LPVOID*)lpBuffer) = (LPVOID)LocalAlloc(GMEM_ZEROINIT,max(nSize, talloced));
memcpy(*(LPSTR*)lpBuffer,target,talloced);
} else {
lstrcpynA(lpBuffer,target,nSize);
}
HeapFree(GetProcessHeap(),0,target);
if (from) HeapFree(GetProcessHeap(),0,from);
TRACE("-- returning %d\n", (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) ? strlen(*(LPSTR*)lpBuffer):strlen(lpBuffer));
return (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) ?
strlen(*(LPSTR*)lpBuffer):
strlen(lpBuffer);
#else
return 0;
#endif /* __i386__ */
}
#undef ADD_TO_T
/***********************************************************************
* FormatMessageW (KERNEL32.138)
*/
DWORD WINAPI FormatMessageW(
DWORD dwFlags,
LPCVOID lpSource,
DWORD dwMessageId,
DWORD dwLanguageId,
LPWSTR lpBuffer,
DWORD nSize,
LPDWORD args /* va_list *args */
) {
#ifdef __i386__
/* This implementation is completely dependant on the format of the va_list on x86 CPUs */
LPSTR target,t;
DWORD talloced;
LPSTR from,f;
DWORD width = dwFlags & FORMAT_MESSAGE_MAX_WIDTH_MASK;
BOOL eos = FALSE;
INT bufsize;
HMODULE hmodule = (HMODULE)lpSource;
CHAR ch;
TRACE("(0x%lx,%p,%ld,0x%lx,%p,%ld,%p)\n",
dwFlags,lpSource,dwMessageId,dwLanguageId,lpBuffer,nSize,args);
if ((dwFlags & FORMAT_MESSAGE_FROM_SYSTEM)
&& (dwFlags & FORMAT_MESSAGE_FROM_HMODULE)) return 0;
if ((dwFlags & FORMAT_MESSAGE_FROM_STRING)
&&((dwFlags & FORMAT_MESSAGE_FROM_SYSTEM)
|| (dwFlags & FORMAT_MESSAGE_FROM_HMODULE))) return 0;
if (width && width != FORMAT_MESSAGE_MAX_WIDTH_MASK)
FIXME("line wrapping not supported.\n");
from = NULL;
if (dwFlags & FORMAT_MESSAGE_FROM_STRING) {
from = HEAP_strdupWtoA(GetProcessHeap(),0,(LPWSTR)lpSource);
}
else {
dwMessageId &= 0xFFFF;
if (dwFlags & FORMAT_MESSAGE_FROM_SYSTEM)
hmodule = GetModuleHandleA("kernel32");
bufsize=load_messageA(hmodule,dwMessageId,dwLanguageId,NULL,100);
if (!bufsize) {
if (dwLanguageId) {
SetLastError (ERROR_RESOURCE_LANG_NOT_FOUND);
return 0;
}
bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_NEUTRAL,SUBLANG_NEUTRAL),NULL,100);
if (!bufsize) bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),NULL,100);
if (!bufsize) bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_NEUTRAL,SUBLANG_SYS_DEFAULT),NULL,100);
if (!bufsize) bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_NEUTRAL,SUBLANG_SYS_DEFAULT),NULL,100);
if (!bufsize) bufsize=load_messageA(hmodule,dwMessageId,
MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),NULL,100);
if (!bufsize) {
SetLastError (ERROR_RESOURCE_LANG_NOT_FOUND);
return 0;
}
}
from = HeapAlloc( GetProcessHeap(), 0, bufsize + 1 );
load_messageA(hmodule,dwMessageId,dwLanguageId,from,bufsize+1);
}
target = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, 100 );
t = target;
talloced= 100;
#define ADD_TO_T(c) do {\
*t++=c;\
if (t-target == talloced) {\
target = (char*)HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,talloced*2);\
t = target+talloced;\
talloced*=2;\
} \
} while (0)
if (from) {
f=from;
while (*f && !eos) {
if (*f=='%') {
int insertnr;
char *fmtstr,*sprintfbuf,*x;
DWORD *argliststart;
fmtstr = NULL;
f++;
if (!*f) {
ADD_TO_T('%');
continue;
}
switch (*f) {
case '1':case '2':case '3':case '4':case '5':
case '6':case '7':case '8':case '9':
insertnr=*f-'0';
switch (f[1]) {
case '0':case '1':case '2':case '3':
case '4':case '5':case '6':case '7':
case '8':case '9':
f++;
insertnr=insertnr*10+*f-'0';
f++;
break;
default:
f++;
break;
}
if (*f=='!') {
f++;
if (NULL!=(x=strchr(f,'!')))
{
*x='\0';
fmtstr=HeapAlloc( GetProcessHeap(), 0, strlen(f)+2);
sprintf(fmtstr,"%%%s",f);
f=x+1;
} else {
fmtstr=HeapAlloc(GetProcessHeap(),0,strlen(f));
sprintf(fmtstr,"%%%s",f);
f+=strlen(f); /*at \0*/
}
} else
if(!args)
break;
else
fmtstr=HEAP_strdupA( GetProcessHeap(),0,"%s");
if (dwFlags & FORMAT_MESSAGE_ARGUMENT_ARRAY)
argliststart=args+insertnr-1;
else
argliststart=(*(DWORD**)args)+insertnr-1;
if (fmtstr[strlen(fmtstr)-1]=='s' && argliststart[0]) {
DWORD xarr[3];
xarr[0]=(DWORD)HEAP_strdupWtoA(GetProcessHeap(),0,(LPWSTR)(*(argliststart+0)));
/* possible invalid pointers */
xarr[1]=*(argliststart+1);
xarr[2]=*(argliststart+2);
sprintfbuf=HeapAlloc(GetProcessHeap(),0,lstrlenW((LPWSTR)argliststart[0])*2+1);
/* CMF - This makes a BIG assumption about va_list */
vsprintf(sprintfbuf, fmtstr, (va_list) xarr);
} else {
sprintfbuf=HeapAlloc(GetProcessHeap(),0,100);
/* CMF - This makes a BIG assumption about va_list */
vsprintf(sprintfbuf, fmtstr, (va_list) argliststart);
}
x=sprintfbuf;
while (*x) {
ADD_TO_T(*x++);
}
HeapFree(GetProcessHeap(),0,sprintfbuf);
HeapFree(GetProcessHeap(),0,fmtstr);
break;
case 'n':
ADD_TO_T('\r');
ADD_TO_T('\n');
f++;
break;
case '0':
eos = TRUE;
f++;
break;
default:
ADD_TO_T(*f++);
break;
}
} else {
ch = *f;
f++;
if (ch == '\r')
{
if (*f == '\n')
f++;
ADD_TO_T(' ');
}
else
if (ch == '\n')
{
ADD_TO_T('\r');
ADD_TO_T('\n');
}
else
ADD_TO_T(ch);
}
}
*t='\0';
}
talloced = strlen(target)+1;
if (nSize && talloced<nSize)
target = (char*)HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,nSize);
if (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) {
/* nSize is the MINIMUM size */
*((LPVOID*)lpBuffer) = (LPVOID)LocalAlloc(GMEM_ZEROINIT,talloced*2+2);
lstrcpynAtoW(*(LPWSTR*)lpBuffer,target,talloced);
} else
lstrcpynAtoW(lpBuffer,target,nSize);
HeapFree(GetProcessHeap(),0,target);
if (from) HeapFree(GetProcessHeap(),0,from);
return (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) ?
lstrlenW(*(LPWSTR*)lpBuffer):
lstrlenW(lpBuffer);
#else
return 0;
#endif /* __i386__ */
}
#undef ADD_TO_T