static int user_extra_parse(
semanage_handle_t* handle,
parse_info_t* info,
semanage_user_extra_t* user_extra) {
char* str = NULL;
if (parse_skip_space(handle, info) < 0)
goto err;
if (!info->ptr)
goto last;
/* User string */
if (parse_assert_str(handle, info, "user") < 0)
goto err;
if (parse_assert_space(handle, info) < 0)
goto err;
/* Extract name */
if (parse_fetch_string(handle, info, &str, ' ') < 0)
goto err;
if (semanage_user_extra_set_name(handle, user_extra, str) < 0)
goto err;
free(str);
str = NULL;
/* Prefix string */
if (parse_assert_space(handle, info) < 0)
goto err;
if (parse_assert_str(handle, info, "prefix") < 0)
goto err;
if (parse_assert_space(handle, info) < 0)
goto err;
/* Extract prefix */
if (parse_fetch_string(handle, info, &str, ';') < 0)
goto err;
if (semanage_user_extra_set_prefix(handle, user_extra, str) < 0)
goto err;
free(str);
str = NULL;
/* Semicolon */
if (parse_skip_space(handle, info) < 0)
goto err;
if (parse_assert_ch(handle, info, ';') < 0)
goto err;
return STATUS_SUCCESS;
last:
parse_dispose_line(info);
return STATUS_NODATA;
err:
ERR(handle, "could not parse user extra data");
free(str);
parse_dispose_line(info);
return STATUS_ERR;
}
int parse_assert_space(semanage_handle_t * handle, parse_info_t * info)
{
if (parse_assert_noeof(handle, info) < 0)
return STATUS_ERR;
if (*(info->ptr) && !isspace(*(info->ptr))) {
ERR(handle, "missing whitespace (%s: %u):\n%s",
info->filename, info->lineno, info->orig_line);
return STATUS_ERR;
}
if (parse_skip_space(handle, info) < 0)
return STATUS_ERR;
return STATUS_SUCCESS;
}
static int user_base_parse(semanage_handle_t * handle,
parse_info_t * info, semanage_user_base_t * user)
{
int islist = 0;
char *str = NULL;
char *start;
char *name_str = NULL;
if (parse_skip_space(handle, info) < 0)
goto err;
if (!info->ptr)
goto last;
/* Parse user header */
if (parse_assert_str(handle, info, "user") < 0)
goto err;
if (parse_assert_space(handle, info) < 0)
goto err;
/* Parse user name */
if (parse_fetch_string(handle, info, &name_str, ' ') < 0)
goto err;
if (semanage_user_base_set_name(handle, user, name_str) < 0) {
free(name_str);
goto err;
}
free(name_str);
if (parse_assert_space(handle, info) < 0)
goto err;
if (parse_assert_str(handle, info, "roles") < 0)
goto err;
if (parse_assert_space(handle, info) < 0)
goto err;
islist = (parse_optional_ch(info, '{') != STATUS_NODATA);
/* For each role, loop */
do {
char delim;
if (parse_skip_space(handle, info) < 0)
goto err;
if (parse_assert_noeof(handle, info) < 0)
goto err;
start = info->ptr;
while (*(info->ptr) &&
*(info->ptr) != ';' &&
*(info->ptr) != '}' && !isspace(*(info->ptr)))
info->ptr++;
delim = *(info->ptr);
*(info->ptr)++ = '\0';
if (semanage_user_base_add_role(handle, user, start) < 0)
goto err;
if (delim && !isspace(delim)) {
if (islist && delim == '}')
break;
else if (!islist && delim == ';')
goto skip_semicolon;
else
goto err;
}
if (parse_skip_space(handle, info) < 0)
goto err;
if (parse_optional_ch(info, ';') != STATUS_NODATA)
goto skip_semicolon;
if (parse_optional_ch(info, '}') != STATUS_NODATA)
islist = 0;
} while (islist);
/* Handle mls */
/* Parse level header */
if (parse_skip_space(handle, info) < 0)
goto err;
if (parse_optional_str(info, "level") == STATUS_NODATA)
goto semicolon;
if (parse_assert_space(handle, info) < 0)
goto err;
/* NOTE: does not allow spaces/multiline */
if (parse_fetch_string(handle, info, &str, ' ') < 0)
goto err;
if (semanage_user_base_set_mlslevel(handle, user, str) < 0)
goto err;
free(str);
str = NULL;
/* Parse range header */
if (parse_assert_space(handle, info) < 0)
goto err;
if (parse_assert_str(handle, info, "range") < 0)
goto err;
if (parse_assert_space(handle, info) < 0)
goto err;
/* NOTE: does not allow spaces/multiline */
if (parse_fetch_string(handle, info, &str, ';') < 0)
goto err;
if (semanage_user_base_set_mlsrange(handle, user, str) < 0)
goto err;
free(str);
str = NULL;
/* Check for semicolon */
semicolon:
if (parse_skip_space(handle, info) < 0)
goto err;
if (parse_assert_ch(handle, info, ';') < 0)
goto err;
skip_semicolon:
return STATUS_SUCCESS;
last:
parse_dispose_line(info);
return STATUS_NODATA;
err:
ERR(handle, "could not parse user record");
free(str);
parse_dispose_line(info);
return STATUS_ERR;
}
static int bool_parse(semanage_handle_t * handle,
parse_info_t * info, semanage_bool_t * boolean)
{
int value = 0;
char *str = NULL;
if (parse_skip_space(handle, info) < 0)
goto err;
if (!info->ptr)
goto last;
/* Extract name */
if (parse_fetch_string(handle, info, &str, '=') < 0)
goto err;
if (semanage_bool_set_name(handle, boolean, str) < 0)
goto err;
free(str);
str = NULL;
/* Assert = */
if (parse_skip_space(handle, info) < 0)
goto err;
if (parse_assert_ch(handle, info, '=') < 0)
goto err;
/* Extract value */
if (parse_skip_space(handle, info) < 0)
goto err;
if (parse_optional_str(info, "true") != STATUS_NODATA)
value = 1;
else if (parse_optional_str(info, "TRUE") != STATUS_NODATA)
value = 1;
else if (parse_optional_str(info, "false") != STATUS_NODATA)
value = 0;
else if (parse_optional_str(info, "FALSE") != STATUS_NODATA)
value = 0;
else if (parse_fetch_int(handle, info, &value, ' ') < 0)
goto err;
if (value != 0 && value != 1) {
ERR(handle, "invalid boolean value for \"%s\": %u "
"(%s: %u)\n%s", semanage_bool_get_name(boolean),
value, info->filename, info->lineno, info->orig_line);
goto err;
}
semanage_bool_set_value(boolean, value);
if (parse_assert_space(handle, info) < 0)
goto err;
return STATUS_SUCCESS;
last:
parse_dispose_line(info);
return STATUS_NODATA;
err:
ERR(handle, "could not parse boolean record");
free(str);
parse_dispose_line(info);
return STATUS_ERR;
}
static int node_parse(semanage_handle_t * handle,
parse_info_t * info, semanage_node_t * node)
{
int proto;
char *str = NULL;
semanage_context_t *con = NULL;
if (parse_skip_space(handle, info) < 0)
goto err;
if (!info->ptr)
goto last;
/* Header */
if (parse_assert_str(handle, info, "nodecon") < 0)
goto err;
if (parse_assert_space(handle, info) < 0)
goto err;
/* Protocol */
if (parse_fetch_string(handle, info, &str, ' ') < 0)
goto err;
if (!strcasecmp(str, "ipv4"))
proto = SEMANAGE_PROTO_IP4;
else if (!strcasecmp(str, "ipv6"))
proto = SEMANAGE_PROTO_IP6;
else {
ERR(handle, "invalid protocol \"%s\" (%s: %u):\n%s", str,
info->filename, info->lineno, info->orig_line);
goto err;
}
free(str);
str = NULL;
semanage_node_set_proto(node, proto);
/* Address */
if (parse_assert_space(handle, info) < 0)
goto err;
if (parse_fetch_string(handle, info, &str, ' ') < 0)
goto err;
if (semanage_node_set_addr(handle, node, proto, str) < 0)
goto err;
if (parse_assert_space(handle, info) < 0)
goto err;
free(str);
str = NULL;
/* Netmask */
if (parse_fetch_string(handle, info, &str, ' ') < 0)
goto err;
if (semanage_node_set_mask(handle, node, proto, str) < 0)
goto err;
if (parse_assert_space(handle, info) < 0)
goto err;
free(str);
str = NULL;
/* Port context */
if (parse_fetch_string(handle, info, &str, ' ') < 0)
goto err;
if (semanage_context_from_string(handle, str, &con) < 0) {
ERR(handle, "invalid security context \"%s\" (%s: %u)\n%s",
str, info->filename, info->lineno, info->orig_line);
goto err;
}
if (con == NULL) {
ERR(handle, "<<none>> context is not valid "
"for nodes (%s: %u):\n%s", info->filename,
info->lineno, info->orig_line);
goto err;
}
free(str);
str = NULL;
if (semanage_node_set_con(handle, node, con) < 0)
goto err;
if (parse_assert_space(handle, info) < 0)
goto err;
semanage_context_free(con);
return STATUS_SUCCESS;
last:
parse_dispose_line(info);
return STATUS_NODATA;
err:
ERR(handle, "could not parse node record");
free(str);
semanage_context_free(con);
parse_dispose_line(info);
return STATUS_ERR;
}