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resync with udhcp cvs

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This commit is contained in:
Russ Dill 2002-12-11 21:12:45 +00:00
parent d7e1a6c6eb
commit 1eb7a17b12
9 changed files with 47 additions and 84 deletions
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9
networking/udhcp/Config.in
View File

@ -38,14 +38,5 @@ config CONFIG_FEATURE_UDHCP_DEBUG
help
Please submit a patch to add help text for this item.
config CONFIG_FEATURE_UDHCPC_IP
bool " Compile udhcpc with ip support"
default n
depends on CONFIG_UDHCPC
help
Say yes if you are using the ip command instead of route and ifconfig
in your scripts to bring up the interface.
This is needed as ip wants the subnet as a bitprefix not an ip value.
endmenu

1
networking/udhcp/README.udhcpc
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@ -69,6 +69,7 @@ The paramaters for enviromental variables are as follows:
$1 - What action the script should perform
interface - The interface this was obtained on
ip - The obtained IP
mask - The number of bits in the netmask (ie: 24)
siaddr - The bootp next server option
sname - The bootp server name option
boot_file - The bootp boot file option

4
networking/udhcp/dhcpc.c
View File

@ -248,7 +248,7 @@ int main(int argc, char *argv[])
switch (c) {
case 'c':
len = strlen(optarg) > 255 ? 255 : strlen(optarg);
free(client_config.clientid);
if (client_config.clientid) free(client_config.clientid);
client_config.clientid = xmalloc(len + 2);
client_config.clientid[OPT_CODE] = DHCP_CLIENT_ID;
client_config.clientid[OPT_LEN] = len;
@ -264,7 +264,7 @@ int main(int argc, char *argv[])
case 'h':
case 'H':
len = strlen(optarg) > 255 ? 255 : strlen(optarg);
free(client_config.hostname);
if (client_config.hostname) free(client_config.hostname);
client_config.hostname = xmalloc(len + 2);
client_config.hostname[OPT_CODE] = DHCP_HOST_NAME;
client_config.hostname[OPT_LEN] = len;

2
networking/udhcp/dumpleases.c
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@ -28,7 +28,7 @@ struct lease_t {
u_int32_t expires;
};
#ifdef COMBINED_BINARY
#ifdef BB_VER
int dumpleases_main(int argc, char *argv[])
#else
int main(int argc, char *argv[])

2
networking/udhcp/files.c
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@ -38,7 +38,7 @@ static int read_str(char *line, void *arg)
{
char **dest = arg;
free(*dest);
if (*dest) free(*dest);
*dest = strdup(line);
return 1;

5
networking/udhcp/options.c
View File

@ -13,16 +13,11 @@
#include "options.h"
#include "leases.h"
#include "config.h"
/* supported options are easily added here */
struct dhcp_option options[] = {
/* name[10] flags code */
#ifdef CONFIG_FEATURE_UDHCPC_IP
{"subnet", OPTION_IP | OPTION_REQ | OPTION_PREFIX, 0x01},
#else
{"subnet", OPTION_IP | OPTION_REQ, 0x01},
#endif
{"timezone", OPTION_S32, 0x02},
{"router", OPTION_IP | OPTION_LIST | OPTION_REQ, 0x03},
{"timesvr", OPTION_IP | OPTION_LIST, 0x04},

3
networking/udhcp/options.h
View File

@ -4,8 +4,6 @@
#include "packet.h"
#include "config.h"
#define TYPE_MASK 0x0F
enum {
@ -22,7 +20,6 @@ enum {
#define OPTION_REQ 0x10 /* have the client request this option */
#define OPTION_LIST 0x20 /* There can be a list of 1 or more of these */
#define OPTION_PREFIX 0x40 /* ip wants a prefix instead of a ip for subnet */
struct dhcp_option {
char name[10];

83
networking/udhcp/script.c
View File

@ -37,8 +37,6 @@
#include "options.h"
#include "debug.h"
#include "config.h"
/* get a rough idea of how long an option will be (rounding up...) */
static int max_option_length[] = {
[OPTION_IP] = sizeof("255.255.255.255 "),
@ -60,41 +58,22 @@ static int upper_length(int length, struct dhcp_option *option)
}
static int sprintip(char *dest, char *pre, unsigned char *ip) {
static int sprintip(char *dest, char *pre, unsigned char *ip)
{
return sprintf(dest, "%s%d.%d.%d.%d", pre, ip[0], ip[1], ip[2], ip[3]);
}
#ifdef CONFIG_FEATURE_UDHCPC_IP
/* convert a netmask (255.255.255.0) into the length (24) */
static int inet_ntom (const char *src, short *dst)
/* really simple implementation, just count the bits */
static int mton(struct in_addr *mask)
{
in_addr_t mask, num;
mask = ntohl(*(unsigned int *)src);
for (num = mask; num & 1; num >>= 1);
if (num != 0 && mask != 0)
{
for (num = ~mask; num & 1; num >>= 1);
if (num)
return 0;
int i;
/* note: mask will always be in network byte order, so
* there are no endian issues */
for (i = 31; i >= 0 && !((mask->s_addr >> i) & 1); i--);
return i + 1;
}
for (num = 0; mask; mask <<= 1)
num++;
*dst = num;
return 1;
}
static int sprintprefix(char *dest, char *pre, unsigned char *ip) {
short sdest = 0;
inet_ntom(ip, &sdest);
return sprintf(dest, "%s%hd ", pre, sdest);
}
#endif
/* Fill dest with the text of option 'option'. */
static void fill_options(char *dest, unsigned char *option, struct dhcp_option *type_p)
@ -117,20 +96,9 @@ static void fill_options(char *dest, unsigned char *option, struct dhcp_option *
*(dest++) = '/';
option += 4;
optlen = 4;
#ifndef CONFIG_FEATURE_UDHCPC_IP
case OPTION_IP: /* Works regardless of host byte order. */
#endif
dest += sprintip(dest, "", option);
break;
#ifdef CONFIG_FEATURE_UDHCPC_IP
case OPTION_IP: /* Works regardless of host byte order. */
if (type_p->flags & OPTION_PREFIX) {
dest += sprintprefix(dest, "", option);
} else {
dest += sprintip(dest, "", option);
}
break;
#endif
case OPTION_BOOLEAN:
dest += sprintf(dest, *option ? "yes" : "no");
break;
@ -161,6 +129,7 @@ static void fill_options(char *dest, unsigned char *option, struct dhcp_option *
option += optlen;
len -= optlen;
if (len <= 0) break;
dest += sprintf(dest, " ");
}
}
@ -186,6 +155,7 @@ static char **fill_envp(struct dhcpMessage *packet)
int i, j;
char **envp;
unsigned char *temp;
struct in_addr subnet;
char over = 0;
if (packet == NULL)
@ -202,23 +172,32 @@ static char **fill_envp(struct dhcpMessage *packet)
}
envp = xmalloc((num_options + 5) * sizeof(char *));
envp[0] = xmalloc(sizeof("interface=") + strlen(client_config.interface));
j = 0;
envp[j++] = xmalloc(sizeof("interface=") + strlen(client_config.interface));
sprintf(envp[0], "interface=%s", client_config.interface);
envp[1] = find_env("PATH", "PATH=/bin:/usr/bin:/sbin:/usr/sbin");
envp[2] = find_env("HOME", "HOME=/");
envp[j++] = find_env("PATH", "PATH=/bin:/usr/bin:/sbin:/usr/sbin");
envp[j++] = find_env("HOME", "HOME=/");
if (packet == NULL) {
envp[3] = NULL;
envp[j++] = NULL;
return envp;
}
envp[3] = xmalloc(sizeof("ip=255.255.255.255"));
sprintip(envp[3], "ip=", (unsigned char *) &packet->yiaddr);
for (i = 0, j = 4; options[i].code; i++) {
if ((temp = get_option(packet, options[i].code))) {
envp[j] = xmalloc(sizeof("ip=255.255.255.255"));
sprintip(envp[j++], "ip=", (unsigned char *) &packet->yiaddr);
for (i = 0; options[i].code; i++) {
if (!(temp = get_option(packet, options[i].code)))
continue;
envp[j] = xmalloc(upper_length(temp[OPT_LEN - 2], &options[i]) + strlen(options[i].name) + 2);
fill_options(envp[j], temp, &options[i]);
j++;
fill_options(envp[j++], temp, &options[i]);
/* Fill in a subnet bits option for things like /24 */
if (options[i].code == DHCP_SUBNET) {
envp[j] = xmalloc(sizeof("mask=32"));
memcpy(&subnet, temp, 4);
sprintf(envp[j++], "mask=%d", mton(&subnet));
}
}
if (packet->siaddr) {

2
networking/udhcp/version.h
View File

@ -1,6 +1,6 @@
#ifndef _UDHCP_VERSION_H
#define _UDHCP_VERSION_H
#define VERSION "0.9.8"
#define VERSION "0.9.9-pre"
#endif