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authorDenis Vlasenko <vda.linux@googlemail.com>2007-01-07 01:24:12 +0000
committerDenis Vlasenko <vda.linux@googlemail.com>2007-01-07 01:24:12 +0000
commitfa85b86f388fb037b67fa7fcc3b5502c8d0fa84a (patch)
tree0d2f47866709f0a555d28166b4aeca04dfb7808c /networking/interface.c
parentb05955e0a5aa5c16ef9460cf4bfed1ee589f5f64 (diff)
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add arp applet - thanks to
"Eric Spakman" <E.Spakman@inter.nl.net>
Diffstat (limited to 'networking/interface.c')
-rw-r--r--networking/interface.c200
1 files changed, 165 insertions, 35 deletions
diff --git a/networking/interface.c b/networking/interface.c
index b39298cfe..6d23e9bfc 100644
--- a/networking/interface.c
+++ b/networking/interface.c
@@ -91,26 +91,6 @@ struct in6_ifreq {
91#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */ 91#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
92#endif 92#endif
93 93
94/* This structure defines protocol families and their handlers. */
95struct aftype {
96 const char *name;
97 const char *title;
98 int af;
99 int alen;
100 char *(*print) (unsigned char *);
101 char *(*sprint) (struct sockaddr *, int numeric);
102 int (*input) (int type, char *bufp, struct sockaddr *);
103 void (*herror) (char *text);
104 int (*rprint) (int options);
105 int (*rinput) (int typ, int ext, char **argv);
106
107 /* may modify src */
108 int (*getmask) (char *src, struct sockaddr * mask, char *name);
109
110 int fd;
111 char *flag_file;
112};
113
114/* Display an Internet socket address. */ 94/* Display an Internet socket address. */
115static char *INET_sprint(struct sockaddr *sap, int numeric) 95static char *INET_sprint(struct sockaddr *sap, int numeric)
116{ 96{
@@ -126,12 +106,66 @@ static char *INET_sprint(struct sockaddr *sap, int numeric)
126 return buff; 106 return buff;
127} 107}
128 108
109static int INET_getsock(char *bufp, struct sockaddr *sap)
110{
111 char *sp = bufp, *bp;
112 unsigned int i;
113 unsigned val;
114 struct sockaddr_in *sock_in;
115
116 sock_in = (struct sockaddr_in *) sap;
117 sock_in->sin_family = AF_INET;
118 sock_in->sin_port = 0;
119
120 val = 0;
121 bp = (char *) &val;
122 for (i = 0; i < sizeof(sock_in->sin_addr.s_addr); i++) {
123 *sp = toupper(*sp);
124
125 if ((unsigned)(*sp - 'A') <= 5)
126 bp[i] |= (int) (*sp - ('A' - 10));
127 else if (isdigit(*sp))
128 bp[i] |= (int) (*sp - '0');
129 else
130 return -1;
131
132 bp[i] <<= 4;
133 sp++;
134 *sp = toupper(*sp);
135
136 if ((unsigned)(*sp - 'A') <= 5)
137 bp[i] |= (int) (*sp - ('A' - 10));
138 else if (isdigit(*sp))
139 bp[i] |= (int) (*sp - '0');
140 else
141 return -1;
142
143 sp++;
144 }
145 sock_in->sin_addr.s_addr = htonl(val);
146
147 return (sp - bufp);
148}
149
150static int INET_input(int type, char *bufp, struct sockaddr *sap)
151{
152 switch (type) {
153 case 1:
154 return (INET_getsock(bufp, sap));
155 case 256:
156 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1));
157 default:
158 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0));
159 }
160}
161
129static struct aftype inet_aftype = { 162static struct aftype inet_aftype = {
130 .name = "inet", 163 .name = "inet",
131 .title = "DARPA Internet", 164 .title = "DARPA Internet",
132 .af = AF_INET, 165 .af = AF_INET,
133 .alen = 4, 166 .alen = 4,
134 .sprint = INET_sprint, 167 .sprint = INET_sprint,
168 .input = INET_input,
135 .fd = -1 169 .fd = -1
136}; 170};
137 171
@@ -151,12 +185,37 @@ static char *INET6_sprint(struct sockaddr *sap, int numeric)
151 return buff; 185 return buff;
152} 186}
153 187
188static int INET6_getsock(char *bufp, struct sockaddr *sap)
189{
190 struct sockaddr_in6 *sin6;
191
192 sin6 = (struct sockaddr_in6 *) sap;
193 sin6->sin6_family = AF_INET6;
194 sin6->sin6_port = 0;
195
196 if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0)
197 return -1;
198
199 return 16; /* ?;) */
200}
201
202static int INET6_input(int type, char *bufp, struct sockaddr *sap)
203{
204 switch (type) {
205 case 1:
206 return (INET6_getsock(bufp, sap));
207 default:
208 return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap));
209 }
210}
211
154static struct aftype inet6_aftype = { 212static struct aftype inet6_aftype = {
155 .name = "inet6", 213 .name = "inet6",
156 .title = "IPv6", 214 .title = "IPv6",
157 .af = AF_INET6, 215 .af = AF_INET6,
158 .alen = sizeof(struct in6_addr), 216 .alen = sizeof(struct in6_addr),
159 .sprint = INET6_sprint, 217 .sprint = INET6_sprint,
218 .input = INET6_input,
160 .fd = -1 219 .fd = -1
161}; 220};
162 221
@@ -206,6 +265,20 @@ static struct aftype * const aftypes[] = {
206}; 265};
207 266
208/* Check our protocol family table for this family. */ 267/* Check our protocol family table for this family. */
268struct aftype *get_aftype(const char *name)
269{
270 struct aftype * const *afp;
271
272 afp = aftypes;
273 while (*afp != NULL) {
274 if (!strcmp((*afp)->name, name))
275 return (*afp);
276 afp++;
277 }
278 return NULL;
279}
280
281/* Check our protocol family table for this family. */
209static struct aftype *get_afntype(int af) 282static struct aftype *get_afntype(int af)
210{ 283{
211 struct aftype * const *afp; 284 struct aftype * const *afp;
@@ -714,18 +787,6 @@ static int do_if_fetch(struct interface *ife)
714 return 0; 787 return 0;
715} 788}
716 789
717/* This structure defines hardware protocols and their handlers. */
718struct hwtype {
719 const char * const name;
720 const char *title;
721 int type;
722 int alen;
723 char *(*print) (unsigned char *);
724 int (*input) (char *, struct sockaddr *);
725 int (*activate) (int fd);
726 int suppress_null_addr;
727};
728
729static const struct hwtype unspec_hwtype = { 790static const struct hwtype unspec_hwtype = {
730 .name = "unspec", 791 .name = "unspec",
731 .title = "UNSPEC", 792 .title = "UNSPEC",
@@ -759,14 +820,69 @@ static char *pr_ether(unsigned char *ptr)
759 return buff; 820 return buff;
760} 821}
761 822
762static const struct hwtype ether_hwtype = { 823static int in_ether(char *bufp, struct sockaddr *sap);
824
825static struct hwtype ether_hwtype = {
763 .name = "ether", 826 .name = "ether",
764 .title = "Ethernet", 827 .title = "Ethernet",
765 .type = ARPHRD_ETHER, 828 .type = ARPHRD_ETHER,
766 .alen = ETH_ALEN, 829 .alen = ETH_ALEN,
767 .print = pr_ether 830 .print = pr_ether,
831 .input = in_ether
768}; 832};
769 833
834static unsigned hexchar2int(char c)
835{
836 if (isdigit(c))
837 return c - '0';
838 c &= ~0x20; /* a -> A */
839 if ((unsigned)(c - 'A') <= 5)
840 return c - ('A' - 10);
841 return ~0U;
842}
843
844/* Input an Ethernet address and convert to binary. */
845static int in_ether(char *bufp, struct sockaddr *sap)
846{
847 unsigned char *ptr;
848 char c, *orig;
849 int i;
850 unsigned val;
851
852 sap->sa_family = ether_hwtype.type;
853 ptr = sap->sa_data;
854
855 i = 0;
856 orig = bufp;
857 while ((*bufp != '\0') && (i < ETH_ALEN)) {
858 val = hexchar2int(*bufp++) * 0x10;
859 if (val > 0xff) {
860 errno = EINVAL;
861 return -1;
862 }
863 c = *bufp;
864 if (c == ':' || c == 0)
865 val >>= 4;
866 else {
867 val |= hexchar2int(c);
868 if (val > 0xff) {
869 errno = EINVAL;
870 return -1;
871 }
872 }
873 if (c != 0)
874 bufp++;
875 *ptr++ = (unsigned char) val;
876 i++;
877
878 /* We might get a semicolon here - not required. */
879 if (*bufp == ':') {
880 bufp++;
881 }
882 }
883 return 0;
884}
885
770#include <net/if_arp.h> 886#include <net/if_arp.h>
771 887
772static const struct hwtype ppp_hwtype = { 888static const struct hwtype ppp_hwtype = {
@@ -811,7 +927,21 @@ static const char * const if_port_text[] = {
811#endif 927#endif
812 928
813/* Check our hardware type table for this type. */ 929/* Check our hardware type table for this type. */
814static const struct hwtype *get_hwntype(int type) 930const struct hwtype *get_hwtype(const char *name)
931{
932 const struct hwtype * const *hwp;
933
934 hwp = hwtypes;
935 while (*hwp != NULL) {
936 if (!strcmp((*hwp)->name, name))
937 return (*hwp);
938 hwp++;
939 }
940 return NULL;
941}
942
943/* Check our hardware type table for this type. */
944const struct hwtype *get_hwntype(int type)
815{ 945{
816 const struct hwtype * const *hwp; 946 const struct hwtype * const *hwp;
817 947
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-19 20:20:39 +0000