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CFE-4256: Fallback on /usr/bin/getent when /bin/getent does not exist #5329

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Nov 20, 2023
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CFE-4256: Fallback on /usr/bin/getent when /bin/getent does not exist #5329

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13 changes: 12 additions & 1 deletion libpromises/unix.c
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Original file line number Diff line number Diff line change
Expand Up @@ -246,8 +246,19 @@ static bool GetUserGroupInfoFromGetent(const char *type, const char *query,
char *name, size_t name_size, uintmax_t *id,
LogLevel error_log_level)
{
struct stat sb;
char* getent_bin;
if (stat("/bin/getent", &sb) == 0)
{
getent_bin = "/bin/getent";
}
else
{
getent_bin = "/usr/bin/getent";
}

char buf[CF_BUFSIZE];
NDEBUG_UNUSED int print_ret = snprintf(buf, sizeof(buf), "/bin/getent %s %s", type, query);
NDEBUG_UNUSED int print_ret = snprintf(buf, sizeof(buf), "%s %s %s", getent_bin, type, query);
assert(print_ret < sizeof(buf));

FILE *out = cf_popen(buf, "r", OUTPUT_SELECT_STDOUT);
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