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udhcpd: add code which rejects lease files with suspicious or old timestamp.

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*: s/time(0)/time(NULL)/g
This commit is contained in:
Denis Vlasenko 2009-02-02 10:48:06 +00:00
parent 512c8ae053
commit 04158e0459
11 changed files with 45 additions and 43 deletions
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4
e2fsprogs/old_e2fsprogs/blkid/devname.c
View File

@ -273,7 +273,7 @@ int blkid_probe_all(blkid_cache cache)
return -BLKID_ERR_PARAM;
if (cache->bic_flags & BLKID_BIC_FL_PROBED &&
time(0) - cache->bic_time < BLKID_PROBE_INTERVAL)
time(NULL) - cache->bic_time < BLKID_PROBE_INTERVAL)
return 0;
blkid_read_cache(cache);
@ -335,7 +335,7 @@ int blkid_probe_all(blkid_cache cache)
fclose(proc);
cache->bic_time = time(0);
cache->bic_time = time(NULL);
cache->bic_flags |= BLKID_BIC_FL_PROBED;
blkid_flush_cache(cache);
return 0;

4
e2fsprogs/old_e2fsprogs/blkid/probe.c
View File

@ -562,7 +562,7 @@ blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev)
if (!dev)
return NULL;
now = time(0);
now = time(NULL);
diff = now - dev->bid_time;
if ((now < dev->bid_time) ||
@ -659,7 +659,7 @@ try_again:
found_type:
if (dev && type) {
dev->bid_devno = st.st_rdev;
dev->bid_time = time(0);
dev->bid_time = time(NULL);
dev->bid_flags |= BLKID_BID_FL_VERIFIED;
cache->bic_flags |= BLKID_BIC_FL_CHANGED;

28
e2fsprogs/old_e2fsprogs/e2fsck.c
View File

@ -2270,7 +2270,7 @@ static void e2fsck_move_ext3_journal(e2fsck_t ctx)
ext2fs_mark_super_dirty(fs);
fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
inode.i_links_count = 0;
inode.i_dtime = time(0);
inode.i_dtime = time(NULL);
if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0)
goto err_out;
@ -3381,7 +3381,7 @@ static void e2fsck_pass1(e2fsck_t ctx)
*/
if (!LINUX_S_ISDIR(inode->i_mode)) {
if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx)) {
inode->i_dtime = time(0);
inode->i_dtime = time(NULL);
inode->i_links_count = 0;
ext2fs_icount_store(ctx->inode_link_info,
ino, 0);
@ -3475,7 +3475,7 @@ static void e2fsck_pass1(e2fsck_t ctx)
inode->i_dtime < ctx->fs->super->s_inodes_count) {
if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
inode->i_dtime = inode->i_links_count ?
0 : time(0);
0 : time(NULL);
e2fsck_write_inode(ctx, ino, inode,
"pass1");
}
@ -3489,7 +3489,7 @@ static void e2fsck_pass1(e2fsck_t ctx)
if (!inode->i_dtime && inode->i_mode) {
if (fix_problem(ctx,
PR_1_ZERO_DTIME, &pctx)) {
inode->i_dtime = time(0);
inode->i_dtime = time(NULL);
e2fsck_write_inode(ctx, ino, inode,
"pass1");
}
@ -3659,7 +3659,7 @@ static void e2fsck_pass1(e2fsck_t ctx)
}
e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
"recreate inode");
inode->i_mtime = time(0);
inode->i_mtime = time(NULL);
e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
"recreate inode");
fs->block_map = save_bmap;
@ -4169,7 +4169,7 @@ static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
if (pb.clear) {
inode->i_links_count = 0;
ext2fs_icount_store(ctx->inode_link_info, ino, 0);
inode->i_dtime = time(0);
inode->i_dtime = time(NULL);
dirty_inode++;
ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino);
@ -4202,7 +4202,7 @@ static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
inode->i_links_count = 0;
ext2fs_icount_store(ctx->inode_link_info, ino, 0);
inode->i_dtime = time(0);
inode->i_dtime = time(NULL);
dirty_inode++;
ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino);
@ -5147,7 +5147,7 @@ static void delete_file(e2fsck_t ctx, ext2_ino_t ino,
/* Inode may have changed by block_iterate, so reread it */
e2fsck_read_inode(ctx, ino, &inode, "delete_file");
inode.i_links_count = 0;
inode.i_dtime = time(0);
inode.i_dtime = time(NULL);
if (inode.i_file_acl &&
(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR)) {
count = 1;
@ -6393,7 +6393,7 @@ static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf)
ext2fs_icount_store(ctx->inode_link_info, ino, 0);
e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode");
inode.i_links_count = 0;
inode.i_dtime = time(0);
inode.i_dtime = time(NULL);
e2fsck_write_inode(ctx, ino, &inode, "deallocate_inode");
clear_problem_context(&pctx);
pctx.ino = ino;
@ -6890,7 +6890,7 @@ static void check_root(e2fsck_t ctx)
memset(&inode, 0, sizeof(inode));
inode.i_mode = 040755;
inode.i_size = fs->blocksize;
inode.i_atime = inode.i_ctime = inode.i_mtime = time(0);
inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
inode.i_links_count = 2;
inode.i_blocks = fs->blocksize / 512;
inode.i_block[0] = blk;
@ -7138,7 +7138,7 @@ ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix)
memset(&inode, 0, sizeof(inode));
inode.i_mode = 040700;
inode.i_size = fs->blocksize;
inode.i_atime = inode.i_ctime = inode.i_mtime = time(0);
inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
inode.i_links_count = 2;
inode.i_blocks = fs->blocksize / 512;
inode.i_block[0] = blk;
@ -7492,7 +7492,7 @@ static int disconnect_inode(e2fsck_t ctx, ext2_ino_t i)
if (fix_problem(ctx, PR_4_ZERO_LEN_INODE, &pctx)) {
ext2fs_icount_store(ctx->inode_link_info, i, 0);
inode.i_links_count = 0;
inode.i_dtime = time(0);
inode.i_dtime = time(NULL);
e2fsck_write_inode(ctx, i, &inode,
"disconnect_inode");
/*
@ -11558,7 +11558,7 @@ static int release_orphan_inodes(e2fsck_t ctx)
if (!inode.i_links_count) {
ext2fs_inode_alloc_stats2(fs, ino, -1,
LINUX_S_ISDIR(inode.i_mode));
inode.i_dtime = time(0);
inode.i_dtime = time(NULL);
} else {
inode.i_dtime = 0;
}
@ -12714,7 +12714,7 @@ static void check_if_skip(e2fsck_t ctx)
unsigned int reason_arg = 0;
long next_check;
int batt = is_on_batt();
time_t now = time(0);
time_t now = time(NULL);
if ((ctx->options & E2F_OPT_FORCE) || cflag || swapfs)
return;

4
e2fsprogs/old_e2fsprogs/ext2fs/bb_inode.c
View File

@ -125,9 +125,9 @@ errcode_t ext2fs_update_bb_inode(ext2_filsys fs, ext2_badblocks_list bb_list)
if (retval)
goto cleanup;
inode.i_atime = inode.i_mtime = time(0);
inode.i_atime = inode.i_mtime = time(NULL);
if (!inode.i_ctime)
inode.i_ctime = time(0);
inode.i_ctime = time(NULL);
inode.i_blocks = rec.bad_block_count * (fs->blocksize / 512);
inode.i_size = rec.bad_block_count * fs->blocksize;

2
e2fsprogs/old_e2fsprogs/ext2fs/mkjournal.c
View File

@ -231,7 +231,7 @@ static errcode_t write_journal_inode(ext2_filsys fs, ext2_ino_t journal_ino,
inode.i_size += fs->blocksize * size;
inode.i_blocks += (fs->blocksize / 512) * es.newblocks;
inode.i_mtime = inode.i_ctime = time(0);
inode.i_mtime = inode.i_ctime = time(NULL);
inode.i_links_count = 1;
inode.i_mode = LINUX_S_IFREG | 0600;

4
e2fsprogs/old_e2fsprogs/ext2fs/res_gdt.c
View File

@ -117,7 +117,7 @@ errcode_t ext2fs_create_resize_inode(ext2_filsys fs)
sb->s_feature_ro_compat |=
EXT2_FEATURE_RO_COMPAT_LARGE_FILE;
}
inode.i_ctime = time(0);
inode.i_ctime = time(NULL);
}
for (rsv_off = 0, gdt_off = fs->desc_blocks,
@ -209,7 +209,7 @@ out_inode:
inode.i_size);
#endif
if (inode_dirty) {
inode.i_atime = inode.i_mtime = time(0);
inode.i_atime = inode.i_mtime = time(NULL);
retval2 = ext2fs_write_inode(fs, EXT2_RESIZE_INO, &inode);
if (!retval)
retval = retval2;

2
networking/httpd.c
View File

@ -969,7 +969,7 @@ static void send_headers(int responseNum)
const char *error_page = NULL;
#endif
unsigned i;
time_t timer = time(0);
time_t timer = time(NULL);
char tmp_str[80];
int len;

4
networking/udhcp/dhcpd.c
View File

@ -255,13 +255,13 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
DEBUG("Received DECLINE");
if (lease) {
memset(lease->chaddr, 0, 16);
lease->expires = time(0) + server_config.decline_time;
lease->expires = time(NULL) + server_config.decline_time;
}
break;
case DHCPRELEASE:
DEBUG("Received RELEASE");
if (lease)
lease->expires = time(0);
lease->expires = time(NULL);
break;
case DHCPINFORM:
DEBUG("Received INFORM");

30
networking/udhcp/files.c
View File

@ -36,6 +36,7 @@ static int read_ip(const char *line, void *arg)
return 1;
}
static int read_mac(const char *line, void *arg)
{
return NULL == ether_aton_r(line, (struct ether_addr *)arg);
@ -362,7 +363,7 @@ void FAST_FUNC write_leases(void)
if (leases[i].yiaddr == 0)
continue;
/* screw with the time in the struct, for easier writing */
/* Screw with the time in the struct, for easier writing */
tmp_time = leases[i].expires;
leases[i].expires -= curr;
@ -374,7 +375,7 @@ void FAST_FUNC write_leases(void)
* we lose some leases on restart. Oh well. */
full_write(fd, &leases[i], sizeof(leases[i]));
/* then restore it when done */
/* Then restore it when done */
leases[i].expires = tmp_time;
}
close(fd);
@ -390,10 +391,10 @@ void FAST_FUNC write_leases(void)
void FAST_FUNC read_leases(const char *file)
{
int fd;
unsigned i;
struct dhcpOfferedAddr lease;
int64_t written_at, curr;
int64_t written_at, time_passed;
int fd;
USE_UDHCP_DEBUG(unsigned i;)
fd = open_or_warn(file, O_RDONLY);
if (fd < 0)
@ -402,18 +403,19 @@ void FAST_FUNC read_leases(const char *file)
if (full_read(fd, &written_at, sizeof(written_at)) != sizeof(written_at))
goto ret;
written_at = ntoh64(written_at);
curr = time(NULL);
if (curr < written_at)
written_at = curr; /* lease file from future! :) */
i = 0;
while (i < server_config.max_leases
&& full_read(fd, &lease, sizeof(lease)) == sizeof(lease)
) {
time_passed = time(NULL) - written_at;
/* Strange written_at, or lease file from old version of udhcpd
* which had no "written_at" field? */
if ((uint64_t)time_passed > 12 * 60 * 60)
goto ret;
USE_UDHCP_DEBUG(i = 0;)
while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
/* ADDME: what if it matches some static lease? */
uint32_t y = ntohl(lease.yiaddr);
if (y >= server_config.start_ip && y <= server_config.end_ip) {
int64_t expires = ntohl(lease.expires) + written_at - curr;
signed_leasetime_t expires = ntohl(lease.expires) - (signed_leasetime_t)time_passed;
if (expires <= 0)
continue;
/* NB: add_lease takes "relative time", IOW,
@ -422,7 +424,7 @@ void FAST_FUNC read_leases(const char *file)
bb_error_msg("too many leases while loading %s", file);
break;
}
i++;
USE_UDHCP_DEBUG(i++;)
}
}
DEBUG("Read %d leases", i);

4
runit/sv.c
View File

@ -445,7 +445,7 @@ int sv_main(int argc, char **argv)
service = argv;
services = argc - 1;
tnow = time(0) + 0x400000000000000aULL;
tnow = time(NULL) + 0x400000000000000aULL;
tstart = tnow;
curdir = open_read(".");
if (curdir == -1)
@ -592,7 +592,7 @@ int sv_main(int argc, char **argv)
}
if (want_exit) break;
usleep(420000);
tnow = time(0) + 0x400000000000000aULL;
tnow = time(NULL) + 0x400000000000000aULL;
}
return rc > 99 ? 99 : rc;
}

2
util-linux/rtcwake.c
View File

@ -159,7 +159,7 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
bb_error_msg_and_die("%s not enabled for wakeup events", rtcname);
/* relative or absolute alarm time, normalized to time_t */
sys_time = time(0);
sys_time = time(NULL);
if (sys_time == (time_t)-1)
bb_perror_msg_and_die("read system time");
rtc_time = rtc_read_time(fd, utc);