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server: Accept utf-8 data as input in registry files.

This commit is contained in:
Alexandre Julliard 2008-01-07 20:17:24 +01:00
parent 98c133312f
commit 12717397b7
3 changed files with 137 additions and 77 deletions
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87
server/registry.c
View File

@ -168,12 +168,6 @@ static const struct object_ops key_ops =
* - REG_EXPAND_SZ and REG_MULTI_SZ are saved as strings instead of hex
*/
static inline char to_hex( char ch )
{
if (isdigit(ch)) return ch - '0';
return tolower(ch) - 'a' + 10;
}
/* dump the full path of a key */
static void dump_path( const struct key *key, const struct key *base, FILE *f )
{
@ -1076,65 +1070,6 @@ static void file_read_error( const char *err, struct file_load_info *info )
fprintf( stderr, "<fd>:%d: %s '%s'\n", info->line, err, info->buffer );
}
/* parse an escaped string back into Unicode */
/* return the number of chars read from the input, or -1 on output overflow */
static int parse_strW( WCHAR *dest, data_size_t *len, const char *src, char endchar )
{
data_size_t count = sizeof(WCHAR); /* for terminating null */
const char *p = src;
while (*p && *p != endchar)
{
if (*p != '\\') *dest = (WCHAR)*p++;
else
{
p++;
switch(*p)
{
case 'a': *dest = '\a'; p++; break;
case 'b': *dest = '\b'; p++; break;
case 'e': *dest = '\e'; p++; break;
case 'f': *dest = '\f'; p++; break;
case 'n': *dest = '\n'; p++; break;
case 'r': *dest = '\r'; p++; break;
case 't': *dest = '\t'; p++; break;
case 'v': *dest = '\v'; p++; break;
case 'x': /* hex escape */
p++;
if (!isxdigit(*p)) *dest = 'x';
else
{
*dest = to_hex(*p++);
if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
}
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7': /* octal escape */
*dest = *p++ - '0';
if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0');
if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0');
break;
default:
*dest = (WCHAR)*p++;
break;
}
}
if ((count += sizeof(WCHAR)) > *len) return -1; /* dest buffer overflow */
dest++;
}
*dest = 0;
if (!*p) return -1; /* delimiter not found */
*len = count;
return p + 1 - src;
}
/* convert a data type tag to a value type */
static int get_data_type( const char *buffer, int *type, int *parse_type )
{
@ -1176,10 +1111,11 @@ static struct key *load_key( struct key *base, const char *buffer, int flags,
WCHAR *p;
struct unicode_str name;
int res, modif;
data_size_t len = strlen(buffer) * sizeof(WCHAR);
data_size_t len;
if (!get_file_tmp_space( info, len )) return NULL;
if (!get_file_tmp_space( info, strlen(buffer) * sizeof(WCHAR) )) return NULL;
len = info->tmplen;
if ((res = parse_strW( info->tmp, &len, buffer, ']' )) == -1)
{
file_read_error( "Malformed key", info );
@ -1233,10 +1169,10 @@ static struct key_value *parse_value_name( struct key *key, const char *buffer,
struct key_value *value;
struct unicode_str name;
int index;
data_size_t maxlen = strlen(buffer) * sizeof(WCHAR);
if (!get_file_tmp_space( info, maxlen )) return NULL;
if (!get_file_tmp_space( info, strlen(buffer) * sizeof(WCHAR) )) return NULL;
name.str = info->tmp;
name.len = info->tmplen;
if (buffer[0] == '@')
{
name.len = 0;
@ -1244,10 +1180,10 @@ static struct key_value *parse_value_name( struct key *key, const char *buffer,
}
else
{
int r = parse_strW( info->tmp, &maxlen, buffer + 1, '\"' );
int r = parse_strW( info->tmp, &name.len, buffer + 1, '\"' );
if (r == -1) goto error;
*len = r + 1; /* for initial quote */
name.len = maxlen - sizeof(WCHAR);
name.len -= sizeof(WCHAR); /* terminating null */
}
while (isspace(buffer[*len])) (*len)++;
if (buffer[*len] != '=') goto error;
@ -1277,8 +1213,8 @@ static int load_value( struct key *key, const char *buffer, struct file_load_inf
switch(parse_type)
{
case REG_SZ:
len = strlen(buffer) * sizeof(WCHAR);
if (!get_file_tmp_space( info, len )) return 0;
if (!get_file_tmp_space( info, strlen(buffer) * sizeof(WCHAR) )) return 0;
len = info->tmplen;
if ((res = parse_strW( info->tmp, &len, buffer, '\"' )) == -1) goto error;
ptr = info->tmp;
break;
@ -1332,10 +1268,11 @@ static int get_prefix_len( struct key *key, const char *name, struct file_load_i
{
WCHAR *p;
int res;
data_size_t len = strlen(name) * sizeof(WCHAR);
data_size_t len;
if (!get_file_tmp_space( info, len )) return 0;
if (!get_file_tmp_space( info, strlen(name) * sizeof(WCHAR) )) return 0;
len = info->tmplen;
if ((res = parse_strW( info->tmp, &len, name, ']' )) == -1)
{
file_read_error( "Malformed key", info );

124
server/unicode.c
View File

@ -26,8 +26,130 @@
#include "unicode.h"
/* number of following bytes in sequence based on first byte value (for bytes above 0x7f) */
static const char utf8_length[128] =
{
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x80-0x8f */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x90-0x9f */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xa0-0xaf */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xb0-0xbf */
0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xc0-0xcf */
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xd0-0xdf */
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* 0xe0-0xef */
3,3,3,3,3,0,0,0,0,0,0,0,0,0,0,0 /* 0xf0-0xff */
};
/* first byte mask depending on UTF-8 sequence length */
static const unsigned char utf8_mask[4] = { 0x7f, 0x1f, 0x0f, 0x07 };
/* minimum Unicode value depending on UTF-8 sequence length */
static const unsigned int utf8_minval[4] = { 0x0, 0x80, 0x800, 0x10000 };
static inline char to_hex( char ch )
{
if (isdigit(ch)) return ch - '0';
return tolower(ch) - 'a' + 10;
}
/* parse an escaped string back into Unicode */
/* return the number of chars read from the input, or -1 on output overflow */
int parse_strW( WCHAR *buffer, data_size_t *len, const char *src, char endchar )
{
WCHAR *dest = buffer;
WCHAR *end = buffer + *len / sizeof(WCHAR);
const char *p = src;
unsigned char ch;
while (*p && *p != endchar && dest < end)
{
if (*p == '\\')
{
p++;
if (!*p) break;
switch(*p)
{
case 'a': *dest++ = '\a'; p++; continue;
case 'b': *dest++ = '\b'; p++; continue;
case 'e': *dest++ = '\e'; p++; continue;
case 'f': *dest++ = '\f'; p++; continue;
case 'n': *dest++ = '\n'; p++; continue;
case 'r': *dest++ = '\r'; p++; continue;
case 't': *dest++ = '\t'; p++; continue;
case 'v': *dest++ = '\v'; p++; continue;
case 'x': /* hex escape */
p++;
if (!isxdigit(*p)) *dest = 'x';
else
{
*dest = to_hex(*p++);
if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++);
}
dest++;
continue;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7': /* octal escape */
*dest = *p++ - '0';
if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0');
if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0');
dest++;
continue;
}
/* unrecognized escape: fall through to normal char handling */
}
ch = *p++;
if (ch < 0x80) *dest++ = ch;
else /* parse utf8 char */
{
int charlen = utf8_length[ch-0x80];
unsigned int res = ch & utf8_mask[charlen];
switch(charlen)
{
case 3:
if ((ch = *p ^ 0x80) >= 0x40) break;
res = (res << 6) | ch;
p++;
case 2:
if ((ch = *p ^ 0x80) >= 0x40) break;
res = (res << 6) | ch;
p++;
case 1:
if ((ch = *p ^ 0x80) >= 0x40) break;
res = (res << 6) | ch;
p++;
if (res < utf8_minval[charlen]) break;
if (res > 0x10ffff) break;
if (res <= 0xffff) *dest++ = res;
else /* we need surrogates */
{
res -= 0x10000;
*dest++ = 0xd800 | (res >> 10);
if (dest < end) *dest++ = 0xdc00 | (res & 0x3ff);
}
continue;
}
/* ignore invalid char */
}
}
if (dest >= end) return -1; /* overflow */
*dest++ = 0;
if (!*p) return -1; /* delimiter not found */
*len = (dest - buffer) * sizeof(WCHAR);
return p + 1 - src;
}
/* dump a Unicode string with proper escaping */
int dump_strW( const WCHAR *str, size_t len, FILE *f, const char escape[2] )
int dump_strW( const WCHAR *str, data_size_t len, FILE *f, const char escape[2] )
{
static const char escapes[32] = ".......abtnvfr.............e....";
char buffer[256];

3
server/unicode.h
View File

@ -33,6 +33,7 @@ static inline WCHAR *strdupW( const WCHAR *str )
return memdup( str, len );
}
extern int dump_strW( const WCHAR *str, size_t len, FILE *f, const char escape[2] );
extern int parse_strW( WCHAR *buffer, data_size_t *len, const char *src, char endchar );
extern int dump_strW( const WCHAR *str, data_size_t len, FILE *f, const char escape[2] );
#endif /* __WINE_SERVER_UNICODE_H */