1 /*
2 * Copyright (c) 2018-2022 The strace developers.
3 * All rights reserved.
4 *
5 * SPDX-License-Identifier: LGPL-2.1-or-later
6 */
7
8 #include "defs.h"
9
10 #include "error_prints.h"
11 #include "xstring.h"
12
13 #define XLAT_MACROS_ONLY
14 # include "xlat/arp_hardware_types.h"
15 #undef XLAT_MACROS_ONLY
16
17 DIAG_PUSH_IGNORE_OVERRIDE_INIT
18
19 static uint8_t hwaddr_sizes[] = {
20 [0 ... ARPHRD_VSOCKMON] = 255,
21
22 [ARPHRD_NETROM] = 7 /* AX25_ADDR_LEN */,
23 [ARPHRD_ETHER] = 6 /* ETH_ALEN */,
24 /* ARPHRD_EETHER - no actual devices in Linux */
25 [ARPHRD_AX25] = 7 /* AX25_ADDR_LEN */,
26 /* ARPHRD_PRONET - no actual devices in Linux */
27 /* ARPHRD_CHAOS - no actual devices in Linux */
28 [ARPHRD_IEEE802] = 6 /* FC_ALEN */,
29 [ARPHRD_ARCNET] = 1 /* ARCNET_ALEN */,
30 /* ARPHRD_APPLETLK - no actual devices in Linux */
31 [ARPHRD_DLCI] = sizeof(short),
32 /* ARPHRD_ATM - no explicit setting */
33 /* ARPHRD_METRICOM - no actual devices in Linux */
34 [ARPHRD_IEEE1394] = 16 /* FWNET_ALEN */,
35 [ARPHRD_EUI64] = 8 /* EUI64_ADDR_LEN */,
36 [ARPHRD_INFINIBAND] = 20 /* INFINIBAND_ALEN */,
37 [ARPHRD_SLIP] = 0,
38 /* ARPHRD_CSLIP - no actual devices in Linux */
39 /* ARPHRD_SLIP6 - no actual devices in Linux */
40 /* ARPHRD_CSLIP6 - no actual devices in Linux */
41 /* ARPHRD_RSRVD - no actual devices in Linux */
42 /* ARPHRD_ADAPT - no actual devices in Linux */
43 [ARPHRD_ROSE] = 5 /* ROSE_ADDR_LEN */,
44 [ARPHRD_X25] = 0,
45 /* ARPHRD_HWX25 - no actual devices in Linux */
46 [ARPHRD_CAN] = 0,
47 [ARPHRD_MCTP] = 1,
48 [ARPHRD_PPP] = 0,
49 /* ARPHRD_CISCO - no actual devices in Linux */
50 /* ARPHRD_LAPB - no actual devices in Linux */
51 /* ARPHRD_DDCMP - no actual devices in Linux */
52 [ARPHRD_RAWHDLC] = 0,
53 [ARPHRD_RAWIP] = 0,
54 [ARPHRD_TUNNEL] = 4 /* IPIP */,
55 [ARPHRD_TUNNEL6] = 16 /* sizeof(struct in6_addr) */,
56 /* ARPHRD_FRAD - no actual devices in Linux */
57 /* ARPHRD_SKIP - no actual devices in Linux */
58 [ARPHRD_LOOPBACK] = 6 /* ETH_ALEN */,
59 [ARPHRD_LOCALTLK] = 1 /* LTALK_ALEN */,
60 [ARPHRD_FDDI] = 6 /* FDDI_K_ALEN */,
61 /* ARPHRD_BIF - no actual devices in Linux */
62 [ARPHRD_SIT] = 4,
63 [ARPHRD_IPDDP] = 0,
64 [ARPHRD_IPGRE] = 4,
65 [ARPHRD_PIMREG] = 0,
66 [ARPHRD_HIPPI] = 6 /* HIPPI_ALEN */,
67 /* ARPHRD_ASH - no actual devices in Linux */
68 /* ARPHRD_ECONET - no actual devices in Linux */
69 [ARPHRD_IRDA] = 4 /* LAP_ALEN */,
70 /* ARPHRD_FCPP - no actual devices in Linux */
71 /* ARPHRD_FCAL - no actual devices in Linux */
72 /* ARPHRD_FCPL - no actual devices in Linux */
73 /* ARPHRD_FCFABRIC - no actual devices in Linux */
74 /* ARPHRD_IEEE802_TR - no actual devices in Linux */
75 [ARPHRD_IEEE80211] = 6 /* ETH_ALEN */,
76 [ARPHRD_IEEE80211_PRISM] = 6 /* ETH_ALEN */,
77 [ARPHRD_IEEE80211_RADIOTAP] = 6 /* ETH_ALEN */,
78 [ARPHRD_IEEE802154]
79 = 8 /* IEEE802154_EXTENDED_ADDR_LEN */,
80 [ARPHRD_IEEE802154_MONITOR]
81 = 8 /* IEEE802154_EXTENDED_ADDR_LEN */,
82 [ARPHRD_PHONET] = 1,
83 [ARPHRD_PHONET_PIPE] = 1,
84 [ARPHRD_CAIF] = 0,
85 [ARPHRD_IP6GRE] = 16 /* sizeof(struct in6_addr) */,
86 [ARPHRD_NETLINK] = 0,
87 [ARPHRD_6LOWPAN] = 8 /* EUI64_ADDR_LEN */
88 /* ^ or ETH_ALEN, depending on lltype */,
89 [ARPHRD_VSOCKMON] = 0,
90 };
91
92 DIAG_POP_IGNORE_OVERRIDE_INIT
93
94 static const char *
95 sprint_mac_addr(const uint8_t addr[], size_t size)
96 {
97 static char res[MAX_ADDR_LEN * 3];
98
99 if (size > MAX_ADDR_LEN) {
100 error_func_msg("Address size (%zu) is more than maximum "
101 "supported (%u)", size, MAX_ADDR_LEN);
102
103 return NULL;
104 }
105
106 char *ptr = res;
107
108 for (size_t i = 0; i < size; i++)
109 ptr = xappendstr(res, ptr, "%s%02x", i ? ":" : "", addr[i]);
110
111 return res;
112 }
113
114 void
115 print_mac_addr(const char *prefix, const uint8_t addr[], size_t size)
116 {
117 tprints_string(prefix);
118 if (xlat_verbose(xlat_verbosity) != XLAT_STYLE_ABBREV
119 || size > MAX_ADDR_LEN)
120 print_quoted_string((const char *) addr, size,
121 QUOTE_FORCE_HEX);
122 if (xlat_verbose(xlat_verbosity) == XLAT_STYLE_RAW
123 || size > MAX_ADDR_LEN)
124 return;
125 (xlat_verbose(xlat_verbosity) == XLAT_STYLE_VERBOSE
126 ? tprints_comment : tprints_string)(sprint_mac_addr(addr, size));
127 }
128
129 static const char *
130 sprint_hwaddr(const uint8_t hwaddr[], size_t size, uint32_t devtype)
131 {
132 uint8_t sz = (devtype < ARRAY_SIZE(hwaddr_sizes))
133 ? hwaddr_sizes[devtype] : 255;
134
135 return sprint_mac_addr(hwaddr, MIN(size, sz));
136 }
137
138 void
139 print_hwaddr(const char *prefix, const uint8_t addr[], size_t size,
140 uint32_t devtype)
141 {
142 tprints_string(prefix);
143 if (xlat_verbose(xlat_verbosity) != XLAT_STYLE_ABBREV
144 || size > MAX_ADDR_LEN)
145 print_quoted_string((const char *) addr, size,
146 QUOTE_FORCE_HEX);
147 if (xlat_verbose(xlat_verbosity) == XLAT_STYLE_RAW
148 || size > MAX_ADDR_LEN)
149 return;
150 (xlat_verbose(xlat_verbosity) == XLAT_STYLE_VERBOSE
151 ? tprints_comment : tprints_string)(sprint_hwaddr(addr, size,
152 devtype));
153 }