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pulse-server: add another check for the return value of snprintf()

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In addition to checking if the resulting string would
be too long, also check whether or not snprintf failed.
This commit is contained in:
Barnabás Pőcze 2021-07-25 01:47:13 +02:00
parent 67b422fa18
commit 30e3884a75
1 changed files with 6 additions and 2 deletions
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8
src/modules/module-protocol-pulse/utils.c
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@ -68,11 +68,15 @@ int get_runtime_dir(char *buf, size_t buflen, const char *dir)
if (getpwuid_r(getuid(), &pwd, buffer, sizeof(buffer), &result) == 0)
runtime_dir = result ? result->pw_dir : NULL;
}
size = snprintf(buf, buflen, "%s/%s", runtime_dir, dir) + 1;
if (size > (int) buflen) {
size = snprintf(buf, buflen, "%s/%s", runtime_dir, dir);
if (size < 0)
return -errno;
if ((size_t) size >= buflen) {
pw_log_error(NAME": path %s/%s too long", runtime_dir, dir);
return -ENAMETOOLONG;
}
if (stat(buf, &stat_buf) < 0) {
res = -errno;
if (res != -ENOENT) {