girineko/dhcpd-pools
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Version 2.10

Browse source 
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2009-02-18 00:00:00 +02:00
parent 573418a9e4
commit e4282e8a3d
40 changed files with 4398 additions and 22737 deletions
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44
src/getdata.c
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@ -45,6 +45,9 @@ extern char *malloc();
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#define _XOPEN_SOURCE 600
#include <fcntl.h>
#include <errno.h>
#include "dhcpd-pools.h"
#include "defaults.h"
@ -65,7 +68,16 @@ int parse_leases(void)
eprintf("parse_leases: %s:", config.dhcpdlease_file);
exit(EXIT_FAILURE);
}
posix_fadvise((long) dhcpd_leases, 0, 0, POSIX_FADV_NOREUSE);
if (errno) {
eprintf("parse_leases: fadvise:");
exit(EXIT_FAILURE);
}
posix_fadvise((long) dhcpd_leases, 0, 0, POSIX_FADV_SEQUENTIAL);
if (errno) {
eprintf("parse_leases: fadvise:");
exit(EXIT_FAILURE);
}
/* I found out that there's one lease address per 300 bytes in
* dhcpd.leases file. Malloc is little bit pessimistic and uses
* 250. If someone has higher density in lease file I'm
@ -86,24 +98,20 @@ int parse_leases(void)
while (!feof(dhcpd_leases)) {
fgets(line, MAXLEN, dhcpd_leases);
/* It's a lease */
/* It's a lease, save IP */
if (strstr(line, "lease") == line) {
strncpy(ipstring, line, (size_t) MAXLEN - 1);
}
/* And this is lease state which we are interested about */
else if (strstr(line, "binding state active")) {
strncpy(ipstring, line, (size_t) MAXLEN);
nth_field(2, ipstring, ipstring);
inet_aton(ipstring, &inp);
}
/* Copy IP to correct array */
else if (strstr(line, "binding state active")) {
leases[num_leases] = htonl(inp.s_addr);
num_leases++;
} else if (strstr(line, " binding state free")) {
nth_field(2, ipstring, ipstring);
inet_aton(ipstring, &inp);
touches[num_touches] = htonl(inp.s_addr);
num_touches++;
} else if (strstr(line, " binding state backup")) {
nth_field(2, ipstring, ipstring);
inet_aton(ipstring, &inp);
if (num_backups == 0) {
backups =
safe_malloc((size_t) sizeof(long int) *
@ -125,9 +133,11 @@ int parse_leases(void)
* come. */
int nth_field(int n, char *dest, const char *src)
{
int i, j = 0, wordn = 0;
int i, j = 0, wordn = 0, len;
for (i = 0; i < MAXLEN; i++) {
len = strlen(src);
for (i = 0; i < len; i++) {
if (isspace(src[i])) {
if (!(wordn < n)) {
dest[j] = '\0';
@ -188,6 +198,16 @@ char *parse_config(char *config_file, char *current_shared_name,
eprintf("parse_config: %s:", config_file);
exit(EXIT_FAILURE);
}
posix_fadvise((long) dhcpd_config, 0, 0, POSIX_FADV_NOREUSE);
if (errno) {
eprintf("parse_config: fadvise:");
exit(EXIT_FAILURE);
}
posix_fadvise((long) dhcpd_config, 0, 0, POSIX_FADV_SEQUENTIAL);
if (errno) {
eprintf("parse_config: fadvise:");
exit(EXIT_FAILURE);
}
/* Very hairy stuff begins. */
while (!feof(dhcpd_config)) {