/*
ldb database library
Copyright (C) Andrew Tridgell 2004
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
** under the LGPL
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see .
*/
/*
* Name: ldb
*
* Component: ldif routines
*
* Description: ldif pack/unpack routines
*
* Author: Andrew Tridgell
*/
/*
see RFC2849 for the LDIF format definition
*/
#include "ldb_private.h"
#include "system/locale.h"
/*
*/
static int ldb_read_data_file(TALLOC_CTX *mem_ctx, struct ldb_val *value)
{
struct stat statbuf;
char *buf;
int count, size, bytes;
int ret;
int f;
const char *fname = (const char *)value->data;
if (strncmp(fname, "file://", 7) != 0) {
return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
}
fname += 7;
f = open(fname, O_RDONLY);
if (f == -1) {
return -1;
}
if (fstat(f, &statbuf) != 0) {
ret = -1;
goto done;
}
if (statbuf.st_size == 0) {
ret = -1;
goto done;
}
value->data = (uint8_t *)talloc_size(mem_ctx, statbuf.st_size + 1);
if (value->data == NULL) {
ret = -1;
goto done;
}
value->data[statbuf.st_size] = 0;
count = 0;
size = statbuf.st_size;
buf = (char *)value->data;
while (count < statbuf.st_size) {
bytes = read(f, buf, size);
if (bytes == -1) {
talloc_free(value->data);
ret = -1;
goto done;
}
count += bytes;
buf += bytes;
size -= bytes;
}
value->length = statbuf.st_size;
ret = statbuf.st_size;
done:
close(f);
return ret;
}
/*
this base64 decoder was taken from jitterbug (written by tridge).
we might need to replace it with a new version
*/
int ldb_base64_decode(char *s)
{
const char *b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
int bit_offset=0, byte_offset, idx, i, n;
uint8_t *d = (uint8_t *)s;
char *p=NULL;
n=i=0;
while (*s && (p=strchr(b64,*s))) {
idx = (int)(p - b64);
byte_offset = (i*6)/8;
bit_offset = (i*6)%8;
d[byte_offset] &= ~((1<<(8-bit_offset))-1);
if (bit_offset < 3) {
d[byte_offset] |= (idx << (2-bit_offset));
n = byte_offset+1;
} else {
d[byte_offset] |= (idx >> (bit_offset-2));
d[byte_offset+1] = 0;
d[byte_offset+1] |= (idx << (8-(bit_offset-2))) & 0xFF;
n = byte_offset+2;
}
s++; i++;
}
if (bit_offset >= 3) {
n--;
}
if (*s && !p) {
/* the only termination allowed */
if (*s != '=') {
return -1;
}
}
/* null terminate */
d[n] = 0;
return n;
}
/*
encode as base64
caller frees
*/
char *ldb_base64_encode(TALLOC_CTX *mem_ctx, const char *buf, int len)
{
const char *b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
int bit_offset, byte_offset, idx, i;
const uint8_t *d = (const uint8_t *)buf;
int bytes = (len*8 + 5)/6, pad_bytes = (bytes % 4) ? 4 - (bytes % 4) : 0;
char *out;
out = talloc_array(mem_ctx, char, bytes+pad_bytes+1);
if (!out) return NULL;
for (i=0;i> (2-bit_offset)) & 0x3F;
} else {
idx = (d[byte_offset] << (bit_offset-2)) & 0x3F;
if (byte_offset+1 < len) {
idx |= (d[byte_offset+1] >> (8-(bit_offset-2)));
}
}
out[i] = b64[idx];
}
for (;idata;
if (val->length == 0) {
return 0;
}
if (p[0] == ' ' || p[0] == ':') {
return 1;
}
for (i=0; ilength; i++) {
if (!isprint(p[i]) || p[i] == '\n') {
return 1;
}
}
return 0;
}
/* this macro is used to handle the return checking on fprintf_fn() */
#define CHECK_RET do { if (ret < 0) return ret; total += ret; } while (0)
/*
write a line folded string onto a file
*/
static int fold_string(int (*fprintf_fn)(void *, const char *, ...), void *private_data,
const char *buf, size_t length, int start_pos)
{
size_t i;
int total=0, ret;
for (i=0;imsg;
p = ldb_dn_get_extended_linearized(mem_ctx, msg->dn, 1);
ret = fprintf_fn(private_data, "dn: %s\n", p);
talloc_free(p);
CHECK_RET;
if (ldif->changetype != LDB_CHANGETYPE_NONE) {
for (i=0;ldb_changetypes[i].name;i++) {
if (ldb_changetypes[i].changetype == ldif->changetype) {
break;
}
}
if (!ldb_changetypes[i].name) {
ldb_debug(ldb, LDB_DEBUG_ERROR, "Error: Invalid ldif changetype %d",
ldif->changetype);
talloc_free(mem_ctx);
return -1;
}
ret = fprintf_fn(private_data, "changetype: %s\n", ldb_changetypes[i].name);
CHECK_RET;
}
for (i=0;inum_elements;i++) {
const struct ldb_schema_attribute *a;
a = ldb_schema_attribute_by_name(ldb, msg->elements[i].name);
if (ldif->changetype == LDB_CHANGETYPE_MODIFY) {
switch (msg->elements[i].flags & LDB_FLAG_MOD_MASK) {
case LDB_FLAG_MOD_ADD:
fprintf_fn(private_data, "add: %s\n",
msg->elements[i].name);
break;
case LDB_FLAG_MOD_DELETE:
fprintf_fn(private_data, "delete: %s\n",
msg->elements[i].name);
break;
case LDB_FLAG_MOD_REPLACE:
fprintf_fn(private_data, "replace: %s\n",
msg->elements[i].name);
break;
}
}
for (j=0;jelements[i].num_values;j++) {
struct ldb_val v;
bool use_b64_encode;
ret = a->syntax->ldif_write_fn(ldb, mem_ctx, &msg->elements[i].values[j], &v);
if (ret != LDB_SUCCESS) {
v = msg->elements[i].values[j];
}
use_b64_encode = !(ldb->flags & LDB_FLG_SHOW_BINARY)
&& ldb_should_b64_encode(ldb, &v);
if (ret != LDB_SUCCESS || use_b64_encode) {
ret = fprintf_fn(private_data, "%s:: ",
msg->elements[i].name);
CHECK_RET;
ret = base64_encode_f(ldb, fprintf_fn, private_data,
(char *)v.data, v.length,
strlen(msg->elements[i].name)+3);
CHECK_RET;
ret = fprintf_fn(private_data, "\n");
CHECK_RET;
} else {
ret = fprintf_fn(private_data, "%s: ", msg->elements[i].name);
CHECK_RET;
if (ldb->flags & LDB_FLG_SHOW_BINARY) {
ret = fprintf_fn(private_data, "%*.*s",
v.length, v.length, (char *)v.data);
} else {
ret = fold_string(fprintf_fn, private_data,
(char *)v.data, v.length,
strlen(msg->elements[i].name)+2);
}
CHECK_RET;
ret = fprintf_fn(private_data, "\n");
CHECK_RET;
}
if (v.data != msg->elements[i].values[j].data) {
talloc_free(v.data);
}
}
if (ldif->changetype == LDB_CHANGETYPE_MODIFY) {
fprintf_fn(private_data, "-\n");
}
}
ret = fprintf_fn(private_data,"\n");
CHECK_RET;
talloc_free(mem_ctx);
return total;
}
#undef CHECK_RET
/*
pull a ldif chunk, which is defined as a piece of data ending in \n\n or EOF
this routine removes any RFC2849 continuations and comments
caller frees
*/
static char *next_chunk(struct ldb_context *ldb,
int (*fgetc_fn)(void *), void *private_data)
{
size_t alloc_size=0, chunk_size = 0;
char *chunk = NULL;
int c;
int in_comment = 0;
while ((c = fgetc_fn(private_data)) != EOF) {
if (chunk_size+1 >= alloc_size) {
char *c2;
alloc_size += 1024;
c2 = talloc_realloc(ldb, chunk, char, alloc_size);
if (!c2) {
talloc_free(chunk);
errno = ENOMEM;
return NULL;
}
chunk = c2;
}
if (in_comment) {
if (c == '\n') {
in_comment = 0;
}
continue;
}
/* handle continuation lines - see RFC2849 */
if (c == ' ' && chunk_size > 1 && chunk[chunk_size-1] == '\n') {
chunk_size--;
continue;
}
/* chunks are terminated by a double line-feed */
if (c == '\n' && chunk_size > 0 && chunk[chunk_size-1] == '\n') {
chunk[chunk_size-1] = 0;
return chunk;
}
if (c == '#' && (chunk_size == 0 || chunk[chunk_size-1] == '\n')) {
in_comment = 1;
continue;
}
/* ignore leading blank lines */
if (chunk_size == 0 && c == '\n') {
continue;
}
chunk[chunk_size++] = c;
}
if (chunk) {
chunk[chunk_size] = 0;
}
return chunk;
}
/* simple ldif attribute parser */
static int next_attr(TALLOC_CTX *mem_ctx, char **s, const char **attr, struct ldb_val *value)
{
char *p;
int base64_encoded = 0;
int binary_file = 0;
if (strncmp(*s, "-\n", 2) == 0) {
value->length = 0;
*attr = "-";
*s += 2;
return 0;
}
p = strchr(*s, ':');
if (!p) {
return -1;
}
*p++ = 0;
if (*p == ':') {
base64_encoded = 1;
p++;
}
if (*p == '<') {
binary_file = 1;
p++;
}
*attr = *s;
while (*p == ' ' || *p == '\t') {
p++;
}
value->data = (uint8_t *)p;
p = strchr(p, '\n');
if (!p) {
value->length = strlen((char *)value->data);
*s = ((char *)value->data) + value->length;
} else {
value->length = p - (char *)value->data;
*s = p+1;
*p = 0;
}
if (base64_encoded) {
int len = ldb_base64_decode((char *)value->data);
if (len == -1) {
/* it wasn't valid base64 data */
return -1;
}
value->length = len;
}
if (binary_file) {
int len = ldb_read_data_file(mem_ctx, value);
if (len == -1) {
/* an error occurred while trying to retrieve the file */
return -1;
}
}
return 0;
}
/*
free a message from a ldif_read
*/
void ldb_ldif_read_free(struct ldb_context *ldb, struct ldb_ldif *ldif)
{
talloc_free(ldif);
}
int ldb_ldif_parse_modrdn(struct ldb_context *ldb,
const struct ldb_ldif *ldif,
TALLOC_CTX *mem_ctx,
struct ldb_dn **_olddn,
struct ldb_dn **_newrdn,
bool *_deleteoldrdn,
struct ldb_dn **_newsuperior,
struct ldb_dn **_newdn)
{
struct ldb_message *msg = ldif->msg;
struct ldb_val *newrdn_val = NULL;
struct ldb_val *deleteoldrdn_val = NULL;
struct ldb_val *newsuperior_val = NULL;
struct ldb_dn *olddn = NULL;
struct ldb_dn *newrdn = NULL;
bool deleteoldrdn = true;
struct ldb_dn *newsuperior = NULL;
struct ldb_dn *newdn = NULL;
struct ldb_val tmp_false;
struct ldb_val tmp_true;
bool ok;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
if (tmp_ctx == NULL) {
ldb_debug(ldb, LDB_DEBUG_FATAL,
"Error: talloc_new() failed");
goto err_op;
}
if (ldif->changetype != LDB_CHANGETYPE_MODRDN) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: invalid changetype '%d'",
ldif->changetype);
goto err_other;
}
if (msg->num_elements < 2) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: num_elements[%u] < 2",
msg->num_elements);
goto err_other;
}
if (msg->num_elements > 3) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: num_elements[%u] > 3",
msg->num_elements);
goto err_other;
}
#define CHECK_ELEMENT(i, _name, v, needed) do { \
v = NULL; \
if (msg->num_elements < (i + 1)) { \
if (needed) { \
ldb_debug(ldb, LDB_DEBUG_ERROR, \
"Error: num_elements[%u] < (%u + 1)", \
msg->num_elements, i); \
goto err_other; \
} \
} else if (ldb_attr_cmp(msg->elements[i].name, _name) != 0) { \
ldb_debug(ldb, LDB_DEBUG_ERROR, \
"Error: elements[%u].name[%s] != [%s]", \
i, msg->elements[i].name, _name); \
goto err_other; \
} else if (msg->elements[i].flags != 0) { \
ldb_debug(ldb, LDB_DEBUG_ERROR, \
"Error: elements[%u].flags[0x%X} != [0x0]", \
i, msg->elements[i].flags); \
goto err_other; \
} else if (msg->elements[i].num_values != 1) { \
ldb_debug(ldb, LDB_DEBUG_ERROR, \
"Error: elements[%u].num_values[%u] != 1", \
i, msg->elements[i].num_values); \
goto err_other; \
} else { \
v = &msg->elements[i].values[0]; \
} \
} while (0)
CHECK_ELEMENT(0, "newrdn", newrdn_val, true);
CHECK_ELEMENT(1, "deleteoldrdn", deleteoldrdn_val, true);
CHECK_ELEMENT(2, "newsuperior", newsuperior_val, false);
#undef CHECK_ELEMENT
olddn = ldb_dn_copy(tmp_ctx, msg->dn);
if (olddn == NULL) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: failed to copy olddn '%s'",
ldb_dn_get_linearized(msg->dn));
goto err_op;
}
newrdn = ldb_dn_from_ldb_val(tmp_ctx, ldb, newrdn_val);
if (!ldb_dn_validate(newrdn)) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: Unable to parse dn '%s'",
(char *)newrdn_val->data);
goto err_dn;
}
tmp_false.length = 1;
tmp_false.data = discard_const_p(uint8_t, "0");
tmp_true.length = 1;
tmp_true.data = discard_const_p(uint8_t, "1");
if (ldb_val_equal_exact(deleteoldrdn_val, &tmp_false) == 1) {
deleteoldrdn = false;
} else if (ldb_val_equal_exact(deleteoldrdn_val, &tmp_true) == 1) {
deleteoldrdn = true;
} else {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: deleteoldrdn value invalid '%s' not '0'/'1'",
(char *)deleteoldrdn_val->data);
goto err_attr;
}
if (newsuperior_val) {
newsuperior = ldb_dn_from_ldb_val(tmp_ctx, ldb, newsuperior_val);
if (!ldb_dn_validate(newsuperior)) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: Unable to parse dn '%s'",
(char *)newsuperior_val->data);
goto err_dn;
}
} else {
newsuperior = ldb_dn_get_parent(tmp_ctx, msg->dn);
if (newsuperior == NULL) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: Unable to get parent dn '%s'",
ldb_dn_get_linearized(msg->dn));
goto err_dn;
}
}
newdn = ldb_dn_copy(tmp_ctx, newrdn);
if (newdn == NULL) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: failed to copy newrdn '%s'",
ldb_dn_get_linearized(newrdn));
goto err_op;
}
ok = ldb_dn_add_base(newdn, newsuperior);
if (!ok) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: failed to base '%s' to newdn '%s'",
ldb_dn_get_linearized(newsuperior),
ldb_dn_get_linearized(newdn));
goto err_op;
}
if (_olddn) {
*_olddn = talloc_move(mem_ctx, &olddn);
}
if (_newrdn) {
*_newrdn = talloc_move(mem_ctx, &newrdn);
}
if (_deleteoldrdn) {
*_deleteoldrdn = deleteoldrdn;
}
if (_newsuperior) {
if (newsuperior_val) {
*_newrdn = talloc_move(mem_ctx, &newrdn);
} else {
*_newrdn = NULL;
}
}
if (_newdn) {
*_newdn = talloc_move(mem_ctx, &newdn);
}
talloc_free(tmp_ctx);
return LDB_SUCCESS;
err_other:
talloc_free(tmp_ctx);
return LDB_ERR_OTHER;
err_op:
talloc_free(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
err_attr:
talloc_free(tmp_ctx);
return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
err_dn:
talloc_free(tmp_ctx);
return LDB_ERR_INVALID_DN_SYNTAX;
}
/*
read from a LDIF source, creating a ldb_message
*/
struct ldb_ldif *ldb_ldif_read(struct ldb_context *ldb,
int (*fgetc_fn)(void *), void *private_data)
{
struct ldb_ldif *ldif;
struct ldb_message *msg;
const char *attr=NULL;
char *chunk=NULL, *s;
struct ldb_val value;
unsigned flags = 0;
value.data = NULL;
ldif = talloc(ldb, struct ldb_ldif);
if (!ldif) return NULL;
ldif->msg = talloc(ldif, struct ldb_message);
if (ldif->msg == NULL) {
talloc_free(ldif);
return NULL;
}
ldif->changetype = LDB_CHANGETYPE_NONE;
msg = ldif->msg;
msg->dn = NULL;
msg->elements = NULL;
msg->num_elements = 0;
chunk = next_chunk(ldb, fgetc_fn, private_data);
if (!chunk) {
goto failed;
}
talloc_steal(ldif, chunk);
s = chunk;
if (next_attr(ldif, &s, &attr, &value) != 0) {
goto failed;
}
/* first line must be a dn */
if (ldb_attr_cmp(attr, "dn") != 0) {
ldb_debug(ldb, LDB_DEBUG_ERROR, "Error: First line of ldif must be a dn not '%s'",
attr);
goto failed;
}
msg->dn = ldb_dn_from_ldb_val(msg, ldb, &value);
if ( ! ldb_dn_validate(msg->dn)) {
ldb_debug(ldb, LDB_DEBUG_ERROR, "Error: Unable to parse dn '%s'",
(char *)value.data);
goto failed;
}
while (next_attr(ldif, &s, &attr, &value) == 0) {
const struct ldb_schema_attribute *a;
struct ldb_message_element *el;
int ret, empty = 0;
if (ldb_attr_cmp(attr, "changetype") == 0) {
int i;
for (i=0;ldb_changetypes[i].name;i++) {
if (ldb_attr_cmp((char *)value.data, ldb_changetypes[i].name) == 0) {
ldif->changetype = ldb_changetypes[i].changetype;
break;
}
}
if (!ldb_changetypes[i].name) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: Bad ldif changetype '%s'",(char *)value.data);
}
flags = 0;
continue;
}
if (ldb_attr_cmp(attr, "add") == 0) {
flags = LDB_FLAG_MOD_ADD;
empty = 1;
}
if (ldb_attr_cmp(attr, "delete") == 0) {
flags = LDB_FLAG_MOD_DELETE;
empty = 1;
}
if (ldb_attr_cmp(attr, "replace") == 0) {
flags = LDB_FLAG_MOD_REPLACE;
empty = 1;
}
if (ldb_attr_cmp(attr, "-") == 0) {
flags = 0;
continue;
}
if (empty) {
if (ldb_msg_add_empty(msg, (char *)value.data, flags, NULL) != 0) {
goto failed;
}
continue;
}
el = &msg->elements[msg->num_elements-1];
a = ldb_schema_attribute_by_name(ldb, attr);
if (msg->num_elements > 0 && ldb_attr_cmp(attr, el->name) == 0 &&
flags == el->flags) {
/* its a continuation */
el->values =
talloc_realloc(msg->elements, el->values,
struct ldb_val, el->num_values+1);
if (!el->values) {
goto failed;
}
ret = a->syntax->ldif_read_fn(ldb, el->values, &value, &el->values[el->num_values]);
if (ret != 0) {
goto failed;
}
if (value.length == 0) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"Error: Attribute value cannot be empty for attribute '%s'", el->name);
goto failed;
}
if (value.data != el->values[el->num_values].data) {
talloc_steal(el->values, el->values[el->num_values].data);
}
el->num_values++;
} else {
/* its a new attribute */
msg->elements = talloc_realloc(msg, msg->elements,
struct ldb_message_element,
msg->num_elements+1);
if (!msg->elements) {
goto failed;
}
el = &msg->elements[msg->num_elements];
el->flags = flags;
el->name = talloc_strdup(msg->elements, attr);
el->values = talloc(msg->elements, struct ldb_val);
if (!el->values || !el->name) {
goto failed;
}
el->num_values = 1;
ret = a->syntax->ldif_read_fn(ldb, el->values, &value, &el->values[0]);
if (ret != 0) {
goto failed;
}
if (value.data != el->values[0].data) {
talloc_steal(el->values, el->values[0].data);
}
msg->num_elements++;
}
}
if (ldif->changetype == LDB_CHANGETYPE_MODRDN) {
int ret;
ret = ldb_ldif_parse_modrdn(ldb, ldif, ldif,
NULL, NULL, NULL, NULL, NULL);
if (ret != LDB_SUCCESS) {
goto failed;
}
}
return ldif;
failed:
talloc_free(ldif);
return NULL;
}
/*
a wrapper around ldif_read() for reading from FILE*
*/
struct ldif_read_file_state {
FILE *f;
};
static int fgetc_file(void *private_data)
{
struct ldif_read_file_state *state =
(struct ldif_read_file_state *)private_data;
return fgetc(state->f);
}
struct ldb_ldif *ldb_ldif_read_file(struct ldb_context *ldb, FILE *f)
{
struct ldif_read_file_state state;
state.f = f;
return ldb_ldif_read(ldb, fgetc_file, &state);
}
/*
a wrapper around ldif_read() for reading from const char*
*/
struct ldif_read_string_state {
const char *s;
};
static int fgetc_string(void *private_data)
{
struct ldif_read_string_state *state =
(struct ldif_read_string_state *)private_data;
if (state->s[0] != 0) {
return *state->s++;
}
return EOF;
}
struct ldb_ldif *ldb_ldif_read_string(struct ldb_context *ldb, const char **s)
{
struct ldif_read_string_state state;
struct ldb_ldif *ldif;
state.s = *s;
ldif = ldb_ldif_read(ldb, fgetc_string, &state);
*s = state.s;
return ldif;
}
/*
wrapper around ldif_write() for a file
*/
struct ldif_write_file_state {
FILE *f;
};
static int fprintf_file(void *private_data, const char *fmt, ...) PRINTF_ATTRIBUTE(2, 3);
static int fprintf_file(void *private_data, const char *fmt, ...)
{
struct ldif_write_file_state *state =
(struct ldif_write_file_state *)private_data;
int ret;
va_list ap;
va_start(ap, fmt);
ret = vfprintf(state->f, fmt, ap);
va_end(ap);
return ret;
}
int ldb_ldif_write_file(struct ldb_context *ldb, FILE *f, const struct ldb_ldif *ldif)
{
struct ldif_write_file_state state;
state.f = f;
return ldb_ldif_write(ldb, fprintf_file, &state, ldif);
}
/*
wrapper around ldif_write() for a string
*/
struct ldif_write_string_state {
char *string;
};
static int ldif_printf_string(void *private_data, const char *fmt, ...) PRINTF_ATTRIBUTE(2, 3);
static int ldif_printf_string(void *private_data, const char *fmt, ...)
{
struct ldif_write_string_state *state =
(struct ldif_write_string_state *)private_data;
va_list ap;
size_t oldlen = talloc_get_size(state->string);
va_start(ap, fmt);
state->string = talloc_vasprintf_append(state->string, fmt, ap);
va_end(ap);
if (!state->string) {
return -1;
}
return talloc_get_size(state->string) - oldlen;
}
char *ldb_ldif_write_string(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
const struct ldb_ldif *ldif)
{
struct ldif_write_string_state state;
state.string = talloc_strdup(mem_ctx, "");
if (!state.string) {
return NULL;
}
if (ldb_ldif_write(ldb, ldif_printf_string, &state, ldif) == -1) {
return NULL;
}
return state.string;
}
/*
convenient function to turn a ldb_message into a string. Useful for
debugging
*/
char *ldb_ldif_message_string(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
enum ldb_changetype changetype,
const struct ldb_message *msg)
{
struct ldb_ldif ldif;
ldif.changetype = changetype;
ldif.msg = discard_const_p(struct ldb_message, msg);
return ldb_ldif_write_string(ldb, mem_ctx, &ldif);
}