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Revert "tdb: Add tdbdump -u"

This reverts commit ea53e86c25.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Fri Sep 18 14:03:12 CEST 2015 on sn-devel-104
This commit is contained in:
Ralph Boehme 2015-09-18 10:58:37 +02:00 committed by Ralph Böhme
parent 6ce3643e45
commit a36a734717
2 changed files with 1 additions and 293 deletions

View File

@ -22,7 +22,6 @@
<command>tdbdump</command>
<arg choice="opt">-k <replaceable>keyname</replaceable></arg>
<arg choice="opt">-e</arg>
<arg choice="opt">-u</arg>
<arg choice="opt">-h</arg>
<arg choice="req">filename</arg>
</cmdsynopsis>
@ -70,14 +69,6 @@
</para></listitem>
</varlistentry>
<varlistentry>
<term>-u</term>
<listitem><para>
'Undumps' a database, turning the tdbdump output on stdin
into a tdb again.
</para></listitem>
</varlistentry>
</variablelist>
</refsect1>

View File

@ -23,7 +23,6 @@
#include "system/filesys.h"
#include "system/wait.h"
#include "tdb.h"
#include <regex.h>
static void print_data(TDB_DATA d)
{
@ -135,293 +134,18 @@ static int dump_tdb(const char *fname, const char *keyname, bool emergency)
return 0;
}
static bool file_parse_lines(FILE *f,
bool (*cb)(char *buf, size_t buflen,
void *private_data),
void *private_data)
{
char *buf;
size_t buflen;
buflen = 1024;
buf = malloc(1024);
if (buf == NULL) {
return false;
}
while (true) {
size_t pos = 0;
int c;
bool ok;
while ((c = fgetc(f)) != EOF) {
buf[pos++] = c;
if (pos == (buflen-1)) {
char *tmp;
tmp = realloc(buf, buflen*2);
if (tmp == NULL) {
free(buf);
return false;
}
buf = tmp;
buflen *= 2;
}
if (c == '\n') {
break;
}
}
if (c == EOF) {
free(buf);
return (pos == 0);
}
buf[pos] = '\0';
ok = cb(buf, buflen, private_data);
if (!ok) {
break;
}
}
free(buf);
return true;
}
struct undump_state {
struct tdb_context *tdb;
TDB_DATA key;
TDB_DATA data;
int line;
};
static ssize_t match_len(const regmatch_t *m, size_t buflen)
{
if ((m->rm_eo < m->rm_so) ||
(m->rm_eo > buflen) || (m->rm_so > buflen)) {
return -1;
}
return m->rm_eo - m->rm_so;
}
static int nibble(char c)
{
if ((c >= '0') && (c <= '9')) {
return c - '0';
}
if ((c >= 'A') && (c <= 'F')) {
return c - 'A' + 10;
}
if ((c >= 'a') && (c <= 'f')) {
return c - 'a' + 10;
}
return -1;
}
static bool undump_regmatch(int line, char *buf, size_t buflen,
const regmatch_t *nummatch,
const regmatch_t *datamatch,
TDB_DATA *pret)
{
ssize_t numlen = match_len(nummatch, buflen);
ssize_t datalen = match_len(datamatch, buflen);
long long num;
size_t col;
TDB_DATA ret = {0};
if ((numlen == -1) || (datalen == -1)) {
fprintf(stderr, "No matches in line %d\n", line);
return false;
}
{
char numbuf[numlen+1];
memcpy(numbuf, buf+nummatch->rm_so, numlen);
numbuf[numlen] = '\0';
num = atoll(numbuf);
}
if (num == 0) {
*pret = ret;
return true;
}
ret.dptr = malloc(datalen);
if (ret.dptr == NULL) {
fprintf(stderr, "malloc failed for line %d\n", line);
return false;
}
col = datamatch->rm_so;
while (col < datamatch->rm_eo) {
int n;
if (buf[col] != '\\') {
ret.dptr[ret.dsize++] = buf[col++];
continue;
}
if ((datamatch->rm_eo - col) < 3) {
fprintf(stderr, "hex char too short in line %d, "
"col %d\n", line, (int)col);
goto fail;
}
n = nibble(buf[col+1]);
if (n == -1) {
fprintf(stderr, "Could not convert '%c' in line %d "
"col %d\n", buf[col+1], line, (int)col);
goto fail;
}
ret.dptr[ret.dsize] = n << 4;
n = nibble(buf[col+2]);
if (n == -1) {
fprintf(stderr, "Could not convert '%c' in line %d, "
"col %d\n", buf[col+2], line, (int)col);
goto fail;
}
ret.dptr[ret.dsize] |= n;
ret.dsize += 1;
col += 3;
}
if (ret.dsize != num) {
fprintf(stderr, "Expected %d chars, got %d in line %d\n",
(int)num, (int)ret.dsize, line);
goto fail;
}
*pret = ret;
return true;
fail:
free(ret.dptr);
return false;
}
static bool undump_cb(char *buf, size_t buflen, void *private_data)
{
struct undump_state *state = private_data;
regex_t regex;
regmatch_t matches[3];
int ret;
bool ok;
state->line++;
ret = regcomp(&regex, "^key(\\([[:digit:]]*\\)) = \"\\(.*\\)\"\n$", 0);
if (ret != 0) {
return false;
}
ret = regexec(&regex, buf, 3, matches, 0);
if (ret == 0) {
if (state->key.dsize != 0) {
fprintf(stderr, "line %d has duplicate key\n",
state->line);
regfree(&regex);
return false;
}
ok = undump_regmatch(state->line, buf, buflen,
&matches[1], &matches[2],
&state->key);
if (!ok) {
regfree(&regex);
return false;
}
}
regfree(&regex);
ret = regcomp(&regex, "^data(\\([[:digit:]]*\\)) = \"\\(.*\\)\"\n$",
0);
if (ret != 0) {
return false;
}
ret = regexec(&regex, buf, 3, matches, 0);
if (ret == 0) {
if (state->key.dsize == 0) {
fprintf(stderr, "line %d has data without key\n",
state->line);
regfree(&regex);
return false;
}
if (state->data.dsize != 0) {
fprintf(stderr, "line %d has duplicate data\n",
state->line);
regfree(&regex);
return false;
}
ok = undump_regmatch(state->line, buf, buflen,
&matches[1], &matches[2],
&state->data);
if (!ok) {
return false;
}
ret = tdb_store(state->tdb, state->key, state->data, 0);
free(state->key.dptr);
state->key = (TDB_DATA) {0};
free(state->data.dptr);
state->data = (TDB_DATA) {0};
if (ret == -1) {
fprintf(stderr, "tdb_store for line %d failed: %s\n",
state->line, tdb_errorstr(state->tdb));
return false;
}
}
regfree(&regex);
return true;
}
static int undump_tdb(const char *fname)
{
struct tdb_logging_context logfn = { log_stderr };
struct undump_state state = {0};
bool ok;
state.tdb = tdb_open_ex(fname, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600,
&logfn, NULL);
if (state.tdb == NULL) {
printf("Failed to open %s\n", fname);
return 1;
}
ok = file_parse_lines(stdin, undump_cb, &state);
if (!ok) {
printf("Failed to parse stdin\n");
return 1;
}
tdb_close(state.tdb);
return 0;
}
static void usage( void)
{
printf( "Usage: tdbdump [options] <filename>\n\n");
printf( " -h this help message\n");
printf( " -k keyname dumps value of keyname\n");
printf( " -e emergency dump, for corrupt databases\n");
printf( " -u undump stdin\n");
}
int main(int argc, char *argv[])
{
char *fname, *keyname=NULL;
bool emergency = false;
bool undump = false;
int c;
if (argc < 2) {
@ -429,7 +153,7 @@ static void usage( void)
exit(1);
}
while ((c = getopt( argc, argv, "hk:eu")) != -1) {
while ((c = getopt( argc, argv, "hk:e")) != -1) {
switch (c) {
case 'h':
usage();
@ -440,9 +164,6 @@ static void usage( void)
case 'e':
emergency = true;
break;
case 'u':
undump = true;
break;
default:
usage();
exit( 1);
@ -451,9 +172,5 @@ static void usage( void)
fname = argv[optind];
if (undump) {
return undump_tdb(fname);
}
return dump_tdb(fname, keyname, emergency);
}