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author | Miika Pekkarinen <miipekk@ihme.org> | 2006-07-25 18:12:57 +0000 |
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committer | Miika Pekkarinen <miipekk@ihme.org> | 2006-07-25 18:12:57 +0000 |
commit | b40eb3d6627214a7e5a886f972022576799568ec (patch) | |
tree | 9158eadb70ce070919a1dac0fe8ba8521002f7f8 /firmware/common/unicode.c | |
parent | e0d64b95db0664bcf374dc6c52707adfac910759 (diff) | |
download | rockbox-b40eb3d6627214a7e5a886f972022576799568ec.tar.gz rockbox-b40eb3d6627214a7e5a886f972022576799568ec.zip |
Fixed unicode buffer overflow issue (metadata parser crashed with some
mp3 files).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10324 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/common/unicode.c')
-rw-r--r-- | firmware/common/unicode.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/firmware/common/unicode.c b/firmware/common/unicode.c index 83780393d5..1dc7eedc3e 100644 --- a/firmware/common/unicode.c +++ b/firmware/common/unicode.c | |||
@@ -170,11 +170,11 @@ unsigned char* iso_decode(const unsigned char *iso, unsigned char *utf8, | |||
170 | 170 | ||
171 | /* Recode a UTF-16 string with little-endian byte ordering to UTF-8 */ | 171 | /* Recode a UTF-16 string with little-endian byte ordering to UTF-8 */ |
172 | unsigned char* utf16LEdecode(const unsigned char *utf16, unsigned char *utf8, | 172 | unsigned char* utf16LEdecode(const unsigned char *utf16, unsigned char *utf8, |
173 | unsigned int count) | 173 | int count) |
174 | { | 174 | { |
175 | unsigned long ucs; | 175 | unsigned long ucs; |
176 | 176 | ||
177 | while (count != 0) { | 177 | while (count > 0) { |
178 | /* Check for a surrogate pair */ | 178 | /* Check for a surrogate pair */ |
179 | if (utf16[1] >= 0xD8 && utf16[1] < 0xE0) { | 179 | if (utf16[1] >= 0xD8 && utf16[1] < 0xE0) { |
180 | ucs = 0x10000 + ((utf16[0] << 10) | ((utf16[1] - 0xD8) << 18) | 180 | ucs = 0x10000 + ((utf16[0] << 10) | ((utf16[1] - 0xD8) << 18) |
@@ -193,11 +193,11 @@ unsigned char* utf16LEdecode(const unsigned char *utf16, unsigned char *utf8, | |||
193 | 193 | ||
194 | /* Recode a UTF-16 string with big-endian byte ordering to UTF-8 */ | 194 | /* Recode a UTF-16 string with big-endian byte ordering to UTF-8 */ |
195 | unsigned char* utf16BEdecode(const unsigned char *utf16, unsigned char *utf8, | 195 | unsigned char* utf16BEdecode(const unsigned char *utf16, unsigned char *utf8, |
196 | unsigned int count) | 196 | int count) |
197 | { | 197 | { |
198 | unsigned long ucs; | 198 | unsigned long ucs; |
199 | 199 | ||
200 | while (count != 0) { | 200 | while (count > 0) { |
201 | if (*utf16 >= 0xD8 && *utf16 < 0xE0) { /* Check for a surrogate pair */ | 201 | if (*utf16 >= 0xD8 && *utf16 < 0xE0) { /* Check for a surrogate pair */ |
202 | ucs = 0x10000 + (((utf16[0] - 0xD8) << 18) | (utf16[1] << 10) | 202 | ucs = 0x10000 + (((utf16[0] - 0xD8) << 18) | (utf16[1] << 10) |
203 | | ((utf16[2] - 0xDC) << 8) | utf16[3]); | 203 | | ((utf16[2] - 0xDC) << 8) | utf16[3]); |