diff options
Diffstat (limited to 'src/libsystemd-network/fuzz-dhcp-client.c')
-rw-r--r-- | src/libsystemd-network/fuzz-dhcp-client.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/libsystemd-network/fuzz-dhcp-client.c b/src/libsystemd-network/fuzz-dhcp-client.c new file mode 100644 index 0000000000..1812a61950 --- /dev/null +++ b/src/libsystemd-network/fuzz-dhcp-client.c @@ -0,0 +1,79 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> +#include <sys/socket.h> +#include <unistd.h> + +#include "alloc-util.h" +#include "fuzz.h" +#include "sd-event.h" + +#include "sd-dhcp-client.c" + +int dhcp_network_bind_raw_socket( + int ifindex, + union sockaddr_union *link, + uint32_t id, + const uint8_t *addr, size_t addr_len, + const uint8_t *bcaddr, size_t bcaddr_len, + uint16_t arp_type, uint16_t port) { + + int fd; + fd = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0); + if (fd < 0) + return -errno; + + return fd; +} + +int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link, const void *packet, size_t len) { + return len; +} + +int dhcp_network_bind_udp_socket(int ifindex, be32_t address, uint16_t port, int ip_service_type) { + int fd; + + fd = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0); + if (fd < 0) + return -errno; + + return fd; +} + +int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port, const void *packet, size_t len) { + return len; +} + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { + uint8_t mac_addr[] = {'A', 'B', 'C', '1', '2', '3'}; + uint8_t bcast_addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; + _cleanup_(sd_dhcp_client_unrefp) sd_dhcp_client *client = NULL; + _cleanup_(sd_event_unrefp) sd_event *e = NULL; + int res, r; + + if (!getenv("SYSTEMD_LOG_LEVEL")) + log_set_max_level(LOG_CRIT); + + r = sd_dhcp_client_new(&client, false); + assert_se(r >= 0); + assert_se(client); + + assert_se(sd_event_new(&e) >= 0); + + r = sd_dhcp_client_attach_event(client, e, 0); + assert_se(r >= 0); + + assert_se(sd_dhcp_client_set_ifindex(client, 42) >= 0); + assert_se(sd_dhcp_client_set_mac(client, mac_addr, bcast_addr, ETH_ALEN, ARPHRD_ETHER) >= 0); + dhcp_client_set_test_mode(client, true); + + res = sd_dhcp_client_start(client); + assert_se(IN_SET(res, 0, -EINPROGRESS)); + client->xid = 2; + + (void) client_handle_offer(client, (DHCPMessage*) data, size); + + assert_se(sd_dhcp_client_stop(client) >= 0); + + return 0; +} |