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modules: convert snprintf to strbuf

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Use spa_strbuf instead of snprintf to handle errors better.
This commit is contained in:
Wim Taymans 2026-05-06 13:35:09 +02:00
parent 2c4dc2d22f
commit 51b635cc98
4 changed files with 25 additions and 16 deletions
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11
spa/include/spa/debug/mem.h
View file

@ -8,6 +8,7 @@
#include <inttypes.h>
#include <spa/debug/context.h>
#include <spa/utils/string.h>
#ifdef __cplusplus
extern "C" {
@ -30,13 +31,15 @@ SPA_API_DEBUG_MEM int spa_debugc_mem(struct spa_debug_context *ctx, int indent,
{
const uint8_t *t = (const uint8_t*)data;
char buffer[512];
struct spa_strbuf b;
size_t i;
int pos = 0;
for (i = 0; i < size; i++) {
if (i % 16 == 0)
pos = snprintf(buffer, sizeof(buffer), "%p: ", &t[i]);
pos += snprintf(buffer + pos, sizeof(buffer) - pos, "%02x ", t[i]);
if (i % 16 == 0) {
spa_strbuf_init(&b, buffer, sizeof(buffer));
spa_strbuf_append(&b, "%p: ", &t[i]);
}
spa_strbuf_append(&b, "%02x ", t[i]);
if (i % 16 == 15 || i == size - 1) {
spa_debugc(ctx, "%*s" "%s", indent, "", buffer);
}

10
src/modules/module-protocol-native.c
View file

@ -632,13 +632,15 @@ static struct client_data *client_new(struct server *s, int fd)
pw_log_warn("server %p: security label error: %m", s);
} else {
if (!check_print(buffer, len)) {
char *hex, *p;
char *hex;
struct spa_strbuf b;
static const char *ch = "0123456789abcdef";
p = hex = alloca(len * 2 + 10);
p += snprintf(p, 5, "hex:");
hex = alloca(len * 2 + 10);
spa_strbuf_init(&b, hex, len * 2 + 10);
spa_strbuf_append(&b, "hex:");
for(i = 0; i < (int)len; i++)
p += snprintf(p, 3, "%c%c",
spa_strbuf_append(&b, "%c%c",
ch[buffer[i] >> 4], ch[buffer[i] & 0xf]);
pw_properties_set(props, PW_KEY_SEC_LABEL, hex);

8
src/modules/module-protocol-pulse/module.c
View file

@ -288,13 +288,15 @@ void audioinfo_to_properties(struct spa_audio_info_raw *info, struct pw_properti
if (info->rate)
pw_properties_setf(props, SPA_KEY_AUDIO_RATE, "%u", info->rate);
if (info->channels) {
char *s, *p, pos[8];
char *s, pos[8];
struct spa_strbuf b;
pw_properties_setf(props, SPA_KEY_AUDIO_CHANNELS, "%u", info->channels);
p = s = alloca(info->channels * 8);
s = alloca(info->channels * 8);
spa_strbuf_init(&b, s, info->channels * 8);
for (i = 0; i < info->channels; i++)
p += spa_scnprintf(p, 8, "%s%s", i == 0 ? "" : ", ",
spa_strbuf_append(&b, "%s%s", i == 0 ? "" : ", ",
channel_id2name(info->position[i], pos, sizeof(pos)));
pw_properties_setf(props, SPA_KEY_AUDIO_POSITION, "[ %s ]", s);
}

12
src/modules/module-zeroconf-discover.c
View file

@ -184,18 +184,20 @@ static void pw_properties_from_zeroconf(const char *key, const char *value,
else if (spa_streq(key, "channel_map")) {
struct channel_map channel_map;
uint32_t i, pos[CHANNELS_MAX];
char *p, *s, buf[8];
char *s, buf[8];
spa_zero(channel_map);
channel_map_parse(value, &channel_map);
channel_map_to_positions(&channel_map, pos, CHANNELS_MAX);
p = s = alloca(4 + channel_map.channels * 8);
p += spa_scnprintf(p, 2, "[");
s = alloca(4 + channel_map.channels * 8);
struct spa_strbuf b;
spa_strbuf_init(&b, s, 4 + channel_map.channels * 8);
spa_strbuf_append(&b, "[");
for (i = 0; i < channel_map.channels; i++)
p += spa_scnprintf(p, 8, "%s%s", i == 0 ? "" : ",",
spa_strbuf_append(&b, "%s%s", i == 0 ? "" : ",",
channel_id2name(pos[i], buf, sizeof(buf)));
p += spa_scnprintf(p, 2, "]");
spa_strbuf_append(&b, "]");
pw_properties_set(props, SPA_KEY_AUDIO_POSITION, s);
}
else if (spa_streq(key, "format")) {