c7dc79e71d
Also fixes attacks possible via DHCPDECLINE / DHCPRELEASE function old new delta udhcpd_main 1846 1949 +103 send_renew 105 142 +37 send_NAK 61 - -61 send_ACK 180 - -180 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 2/0 up/down: 140/-241) Total: -101 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/* vi: set sw=4 ts=4: */
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/* dhcpc.h */
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#ifndef UDHCP_DHCPC_H
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#define UDHCP_DHCPC_H 1
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PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
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struct client_config_t {
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uint8_t client_mac[6]; /* Our mac address */
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char no_default_options; /* Do not include default options in request */
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IF_FEATURE_UDHCP_PORT(uint16_t port;)
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int ifindex; /* Index number of the interface to use */
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int verbose;
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uint8_t opt_mask[256 / 8]; /* Bitmask of options to send (-O option) */
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const char *interface; /* The name of the interface to use */
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char *pidfile; /* Optionally store the process ID */
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const char *script; /* User script to run at dhcp events */
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uint8_t *clientid; /* Optional client id to use */
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uint8_t *vendorclass; /* Optional vendor class-id to use */
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uint8_t *hostname; /* Optional hostname to use */
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uint8_t *fqdn; /* Optional fully qualified domain name to use */
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} FIX_ALIASING;
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/* server_config sits in 1st half of bb_common_bufsiz1 */
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#define client_config (*(struct client_config_t*)(&bb_common_bufsiz1[COMMON_BUFSIZE / 2]))
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#if ENABLE_FEATURE_UDHCP_PORT
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#define CLIENT_PORT (client_config.port)
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#else
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#define CLIENT_PORT 68
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#endif
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/*** clientpacket.h ***/
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uint32_t random_xid(void) FAST_FUNC;
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int send_discover(uint32_t xid, uint32_t requested) FAST_FUNC;
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int send_select(uint32_t xid, uint32_t server, uint32_t requested) FAST_FUNC;
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#if ENABLE_FEATURE_UDHCPC_ARPING
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int send_decline(uint32_t xid, uint32_t server, uint32_t requested) FAST_FUNC;
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#endif
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int send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr) FAST_FUNC;
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int send_release(uint32_t server, uint32_t ciaddr) FAST_FUNC;
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int udhcp_recv_raw_packet(struct dhcp_packet *dhcp_pkt, int fd) FAST_FUNC;
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POP_SAVED_FUNCTION_VISIBILITY
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#endif
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