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authorMax Kellermann <max@duempel.org>2009-07-23 12:01:03 +0200
committerMax Kellermann <max@duempel.org>2009-07-23 12:01:03 +0200
commit54889c72e3469027a852d9e8ff029d659e612094 (patch)
tree19864296a3807db7b0384d8052c4b12775c33ba6 /src/pcm_convert.c
parentcba126ceb8f1830614a8df04a6b4c1a45f955417 (diff)
downloadmpd-54889c72e3469027a852d9e8ff029d659e612094.tar.gz
mpd-54889c72e3469027a852d9e8ff029d659e612094.tar.xz
mpd-54889c72e3469027a852d9e8ff029d659e612094.zip
pcm_convert: use GError for error handling
Don't abort the whole MPD process when the conversion fails. This has been a denial-of-service attack vector for years.
Diffstat (limited to 'src/pcm_convert.c')
-rw-r--r--src/pcm_convert.c109
1 files changed, 77 insertions, 32 deletions
diff --git a/src/pcm_convert.c b/src/pcm_convert.c
index 8a35d807e..4879dc0ab 100644
--- a/src/pcm_convert.c
+++ b/src/pcm_convert.c
@@ -56,8 +56,8 @@ static const int16_t *
pcm_convert_16(struct pcm_convert_state *state,
const struct audio_format *src_format,
const void *src_buffer, size_t src_size,
- const struct audio_format *dest_format,
- size_t *dest_size_r)
+ const struct audio_format *dest_format, size_t *dest_size_r,
+ GError **error_r)
{
const int16_t *buf;
size_t len;
@@ -67,24 +67,37 @@ pcm_convert_16(struct pcm_convert_state *state,
buf = pcm_convert_to_16(&state->format_buffer, &state->dither,
src_format->bits, src_buffer, src_size,
&len);
- if (!buf)
- g_error("pcm_convert_to_16() failed");
+ if (buf == NULL) {
+ g_set_error(error_r, pcm_convert_quark(), 0,
+ "Conversion from %u to 16 bit is not implemented",
+ src_format->bits);
+ return NULL;
+ }
if (src_format->channels != dest_format->channels) {
buf = pcm_convert_channels_16(&state->channels_buffer,
dest_format->channels,
src_format->channels,
buf, len, &len);
- if (!buf)
- g_error("pcm_convert_channels_16() failed");
+ if (buf == NULL) {
+ g_set_error(error_r, pcm_convert_quark(), 0,
+ "Conversion from %u to %u channels "
+ "is not implemented",
+ src_format->channels,
+ dest_format->channels);
+ return NULL;
+ }
}
- if (src_format->sample_rate != dest_format->sample_rate)
+ if (src_format->sample_rate != dest_format->sample_rate) {
buf = pcm_resample_16(&state->resample,
dest_format->channels,
src_format->sample_rate, buf, len,
- dest_format->sample_rate,
- &len);
+ dest_format->sample_rate, &len,
+ error_r);
+ if (buf == NULL)
+ return NULL;
+ }
if (dest_format->reverse_endian) {
buf = pcm_byteswap_16(&state->byteswap_buffer, buf, len);
@@ -99,8 +112,8 @@ static const int32_t *
pcm_convert_24(struct pcm_convert_state *state,
const struct audio_format *src_format,
const void *src_buffer, size_t src_size,
- const struct audio_format *dest_format,
- size_t *dest_size_r)
+ const struct audio_format *dest_format, size_t *dest_size_r,
+ GError **error_r)
{
const int32_t *buf;
size_t len;
@@ -109,24 +122,37 @@ pcm_convert_24(struct pcm_convert_state *state,
buf = pcm_convert_to_24(&state->format_buffer, src_format->bits,
src_buffer, src_size, &len);
- if (!buf)
- g_error("pcm_convert_to_24() failed");
+ if (buf == NULL) {
+ g_set_error(error_r, pcm_convert_quark(), 0,
+ "Conversion from %u to 24 bit is not implemented",
+ src_format->bits);
+ return NULL;
+ }
if (src_format->channels != dest_format->channels) {
buf = pcm_convert_channels_24(&state->channels_buffer,
dest_format->channels,
src_format->channels,
buf, len, &len);
- if (!buf)
- g_error("pcm_convert_channels_24() failed");
+ if (buf == NULL) {
+ g_set_error(error_r, pcm_convert_quark(), 0,
+ "Conversion from %u to %u channels "
+ "is not implemented",
+ src_format->channels,
+ dest_format->channels);
+ return NULL;
+ }
}
- if (src_format->sample_rate != dest_format->sample_rate)
+ if (src_format->sample_rate != dest_format->sample_rate) {
buf = pcm_resample_24(&state->resample,
dest_format->channels,
src_format->sample_rate, buf, len,
- dest_format->sample_rate,
- &len);
+ dest_format->sample_rate, &len,
+ error_r);
+ if (buf == NULL)
+ return NULL;
+ }
if (dest_format->reverse_endian) {
buf = pcm_byteswap_32(&state->byteswap_buffer, buf, len);
@@ -141,8 +167,8 @@ static const int32_t *
pcm_convert_32(struct pcm_convert_state *state,
const struct audio_format *src_format,
const void *src_buffer, size_t src_size,
- const struct audio_format *dest_format,
- size_t *dest_size_r)
+ const struct audio_format *dest_format, size_t *dest_size_r,
+ GError **error_r)
{
const int32_t *buf;
size_t len;
@@ -151,24 +177,37 @@ pcm_convert_32(struct pcm_convert_state *state,
buf = pcm_convert_to_32(&state->format_buffer, src_format->bits,
src_buffer, src_size, &len);
- if (!buf)
- g_error("pcm_convert_to_32() failed");
+ if (buf == NULL) {
+ g_set_error(error_r, pcm_convert_quark(), 0,
+ "Conversion from %u to 24 bit is not implemented",
+ src_format->bits);
+ return NULL;
+ }
if (src_format->channels != dest_format->channels) {
buf = pcm_convert_channels_32(&state->channels_buffer,
dest_format->channels,
src_format->channels,
buf, len, &len);
- if (!buf)
- g_error("pcm_convert_channels_32() failed");
+ if (buf == NULL) {
+ g_set_error(error_r, pcm_convert_quark(), 0,
+ "Conversion from %u to %u channels "
+ "is not implemented",
+ src_format->channels,
+ dest_format->channels);
+ return NULL;
+ }
}
- if (src_format->sample_rate != dest_format->sample_rate)
+ if (src_format->sample_rate != dest_format->sample_rate) {
buf = pcm_resample_32(&state->resample,
dest_format->channels,
src_format->sample_rate, buf, len,
- dest_format->sample_rate,
- &len);
+ dest_format->sample_rate, &len,
+ error_r);
+ if (buf == NULL)
+ return buf;
+ }
if (dest_format->reverse_endian) {
buf = pcm_byteswap_32(&state->byteswap_buffer, buf, len);
@@ -184,26 +223,32 @@ pcm_convert(struct pcm_convert_state *state,
const struct audio_format *src_format,
const void *src, size_t src_size,
const struct audio_format *dest_format,
- size_t *dest_size_r)
+ size_t *dest_size_r,
+ GError **error_r)
{
switch (dest_format->bits) {
case 16:
return pcm_convert_16(state,
src_format, src, src_size,
- dest_format, dest_size_r);
+ dest_format, dest_size_r,
+ error_r);
case 24:
return pcm_convert_24(state,
src_format, src, src_size,
- dest_format, dest_size_r);
+ dest_format, dest_size_r,
+ error_r);
case 32:
return pcm_convert_32(state,
src_format, src, src_size,
- dest_format, dest_size_r);
+ dest_format, dest_size_r,
+ error_r);
default:
- g_error("cannot convert to %u bit\n", dest_format->bits);
+ g_set_error(error_r, pcm_convert_quark(), 0,
+ "PCM conversion to %u bit is not implemented",
+ dest_format->bits);
return NULL;
}
}