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https://github.com/kernelkit/infix.git
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Joachim Wiberg
c529f06cf0
error: format not a string literal and no format arguments [-Werror=format-security] Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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#include <stdio.h>
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#include <stdlib.h>
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#include <jansson.h>
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#include <srx/common.h>
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#include <srx/helpers.h>
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json_t *json_get_output(const char *cmd)
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{
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json_error_t j_err;
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json_t *j_root;
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FILE *proc;
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proc = popenf("re", "%s", cmd);
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if (!proc) {
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ERROR("Error, running command %s", cmd);
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return NULL;
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}
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j_root = json_loadf(proc, 0, &j_err);
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pclose(proc);
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if (!j_root) {
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ERROR("Error, parsing command JSON (%s)", cmd);
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return NULL;
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}
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return j_root;
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}
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int ip_link_check_group(const char *ifname, const char *group)
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{
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char cmd[512] = {}; /* Size is arbitrary */
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json_t *j_iface;
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json_t *j_root;
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json_t *j_val;
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snprintf(cmd, sizeof(cmd), "ip -s -d -j link show dev %s 2>/dev/null", ifname);
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j_root = json_get_output(cmd);
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if (!j_root) {
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ERROR("Error, parsing ip-link JSON");
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return -1;
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}
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if (json_array_size(j_root) != 1) {
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ERROR("Error, expected JSON array of single iface");
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json_decref(j_root);
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return -1;
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}
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j_iface = json_array_get(j_root, 0);
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j_val = json_object_get(j_iface, "group");
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if (!json_is_string(j_val)) {
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ERROR("Error, expected a JSON string for 'group'");
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json_decref(j_root);
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return -1;
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}
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if (strcmp(json_string_value(j_val), group) == 0) {
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json_decref(j_root);
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return 1;
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}
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json_decref(j_root);
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return 0;
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}
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