summaryrefslogtreecommitdiffstats
path: root/toolchain/musl/patches-0.9.7/001-bsd_ether_h.patch
blob: be3a0217ac0c20576f9f19b596ce124f176662ab (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
Date: Sat, 20 Oct 2012 22:15:44 +0200
From: Abdoulaye Walsimou Gaye <awg@...toolkit.org>
To: musl@...ts.openwall.com
Cc: Abdoulaye Walsimou Gaye <awg@...toolkit.org>
Subject: [PATCH 3/4] Import BSD functions defined in <netinet/ether.h> from NetBSD

Signed-off-by: Abdoulaye Walsimou Gaye <awg@...toolkit.org>
---
 include/netinet/ether.h |   14 ++++
 src/network/ethers.c    |  180 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 194 insertions(+)
 create mode 100644 include/netinet/ether.h
 create mode 100644 src/network/ethers.c

diff --git a/include/netinet/ether.h b/include/netinet/ether.h
new file mode 100644
index 0000000..44c614e
--- /dev/null
+++ b/include/netinet/ether.h
@@ -0,0 +1,10 @@
+#ifndef _NETINET_ETHER_H
+#define _NETINET_ETHER_H
+
+char	*ether_ntoa(const struct ether_addr *);
+struct 	ether_addr *ether_aton(const char *);
+int	ether_ntohost(char *, const struct ether_addr *);
+int	ether_hostton(const char *, struct ether_addr *);
+int	ether_line(const char *, struct ether_addr *, char *);
+
+#endif /* !_NETINET_ETHER_H */
diff --git a/src/network/ethers.c b/src/network/ethers.c
new file mode 100644
index 0000000..8014581
--- /dev/null
+++ b/src/network/ethers.c
@@ -0,0 +1,180 @@
+/* Origin NetBSD: src/lib/libc/net/ethers.c */
+
+/*
+ * ethers(3N) a la Sun.
+ *
+ * Written by Roland McGrath <roland@...b.com> 10/14/93.
+ * Public domain.
+ *
+ * port for musl by Abdoulaye Walsimou GAYE <awg@...toolkit.org> 2012/10/15
+ */
+
+#define _BSD_SOURCE
+#include <net/ethernet.h>
+#include <netinet/ether.h>
+
+#include <sys/param.h>
+#include <assert.h>
+#include <errno.h>
+#include <paths.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef _PATH_ETHERS
+#define _PATH_ETHERS "/etc/ethers"
+#endif
+
+/*
+ * ether_ntoa():
+ * This function converts this structure into an ASCII string of the form
+ * ``xx:xx:xx:xx:xx:xx'', consisting of 6 hexadecimal numbers separated
+ * by colons.  It returns a pointer to a static buffer that is reused for
+ * each call.
+ */
+char *ether_ntoa(const struct ether_addr *e)
+{
+	static char a[18];
+
+	assert(e != NULL);
+
+	(void) snprintf(a, sizeof a, "%02x:%02x:%02x:%02x:%02x:%02x",
+	    e->ether_addr_octet[0], e->ether_addr_octet[1],
+	    e->ether_addr_octet[2], e->ether_addr_octet[3],
+	    e->ether_addr_octet[4], e->ether_addr_octet[5]);
+	return a;
+}
+
+/*
+ * ether_aton():
+ * This function converts an ASCII string of the same form and to a structure
+ * containing the 6 octets of the address.  It returns a pointer to a
+ * static structure that is reused for each call.
+ */
+struct ether_addr *ether_aton(const char *s)
+{
+	static struct ether_addr n;
+	unsigned int i[6];
+
+	assert(s != NULL);
+
+	if (sscanf(s, " %x:%x:%x:%x:%x:%x ", &i[0], &i[1],
+	    &i[2], &i[3], &i[4], &i[5]) == 6) {
+		n.ether_addr_octet[0] = (unsigned char)i[0];
+		n.ether_addr_octet[1] = (unsigned char)i[1];
+		n.ether_addr_octet[2] = (unsigned char)i[2];
+		n.ether_addr_octet[3] = (unsigned char)i[3];
+		n.ether_addr_octet[4] = (unsigned char)i[4];
+		n.ether_addr_octet[5] = (unsigned char)i[5];
+		return &n;
+	}
+	return NULL;
+}
+
+/*
+ * ether_ntohost():
+ * This function interrogates the data base mapping host names to Ethernet
+ * addresses, /etc/ethers.
+ * It looks up the given Ethernet address and writes the associated host name
+ * into the character buffer passed.
+ * It returns zero if it finds the requested host name and -1 if not.
+ */
+int ether_ntohost(char *hostname, const struct ether_addr *e)
+{
+	FILE *f;
+	char *p;
+	size_t len;
+	struct ether_addr try;
+
+	assert(hostname != NULL);
+	assert(e != NULL);
+
+	f = fopen(_PATH_ETHERS, "r");
+	if (f == NULL)
+		return -1;
+	while ((p = fgetln(f, &len)) != NULL) {
+		if (p[len - 1] != '\n')
+			continue;		/* skip lines w/o \n */
+		p[--len] = '\0';
+		if (ether_line(p, &try, hostname) == 0 &&
+		    memcmp(&try, e, sizeof try) == 0) {
+			(void)fclose(f);
+			return 0;
+		}
+	}
+	(void)fclose(f);
+	errno = ENOENT;
+	return -1;
+}
+
+/*
+ * ether_hostton():
+ * This function interrogates the data base mapping host names to Ethernet
+ * addresses, /etc/ethers.
+ * It looks up the given host name and writes the associated Ethernet address
+ * into the structure passed.
+ * It returns zero if it finds the requested address and -1 if not.
+ */
+int ether_hostton(const char *hostname, struct ether_addr *e)
+{
+	FILE *f;
+	char *p;
+	size_t len;
+	char try[MAXHOSTNAMELEN + 1];
+
+	assert(hostname != NULL);
+	assert(e != NULL);
+
+	f = fopen(_PATH_ETHERS, "r");
+	if (f==NULL)
+		return -1;
+
+	while ((p = fgetln(f, &len)) != NULL) {
+		if (p[len - 1] != '\n')
+			continue;		/* skip lines w/o \n */
+		p[--len] = '\0';
+		if (ether_line(p, e, try) == 0 && strcmp(hostname, try) == 0) {
+			(void)fclose(f);
+			return 0;
+		}
+	}
+	(void)fclose(f);
+	errno = ENOENT;
+	return -1;
+}
+
+/*
+ * ether_line():
+ * This function parses a line from the /etc/ethers file and fills in the passed
+ * ``struct ether_addr'' and character buffer with the Ethernet address and host
+ * name on the line.
+ * It returns zero if the line was successfully parsed and -1 if not.
+ */
+int ether_line(const char *l, struct ether_addr *e, char *hostname)
+{
+	unsigned int i[6];
+
+#define S2(arg) #arg
+#define S1(arg) S2(arg)
+	static const char fmt[] = " %x:%x:%x:%x:%x:%x"
+	    " %" S1(MAXHOSTNAMELEN) "s\n";
+#undef S2
+#undef S1
+
+	assert(l != NULL);
+	assert(e != NULL);
+	assert(hostname != NULL);
+
+	if (sscanf(l, fmt,
+	    &i[0], &i[1], &i[2], &i[3], &i[4], &i[5], hostname) == 7) {
+		e->ether_addr_octet[0] = (unsigned char)i[0];
+		e->ether_addr_octet[1] = (unsigned char)i[1];
+		e->ether_addr_octet[2] = (unsigned char)i[2];
+		e->ether_addr_octet[3] = (unsigned char)i[3];
+		e->ether_addr_octet[4] = (unsigned char)i[4];
+		e->ether_addr_octet[5] = (unsigned char)i[5];
+		return 0;
+	}
+	errno = EINVAL;
+	return -1;
+}
-- 
1.7.9.5