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Diffstat (limited to 'source4/librpc/ndr/ndr_string.c')
-rw-r--r--source4/librpc/ndr/ndr_string.c499
1 files changed, 499 insertions, 0 deletions
diff --git a/source4/librpc/ndr/ndr_string.c b/source4/librpc/ndr/ndr_string.c
new file mode 100644
index 0000000000..ee76508393
--- /dev/null
+++ b/source4/librpc/ndr/ndr_string.c
@@ -0,0 +1,499 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ routines for marshalling/unmarshalling string types
+
+ Copyright (C) Andrew Tridgell 2003
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "system/network.h"
+
+/*
+ pull a general string from the wire
+*/
+NTSTATUS ndr_pull_string(struct ndr_pull *ndr, int ndr_flags, const char **s)
+{
+ char *as=NULL;
+ uint32_t len1, ofs, len2;
+ uint16_t len3;
+ int ret;
+ int chset = CH_UTF16;
+ unsigned byte_mul = 2;
+ unsigned flags = ndr->flags;
+ unsigned c_len_term = 0;
+
+ if (!(ndr_flags & NDR_SCALARS)) {
+ return NT_STATUS_OK;
+ }
+
+ if (NDR_BE(ndr)) {
+ chset = CH_UTF16BE;
+ }
+
+ if (flags & LIBNDR_FLAG_STR_ASCII) {
+ chset = CH_DOS;
+ byte_mul = 1;
+ flags &= ~LIBNDR_FLAG_STR_ASCII;
+ }
+
+ if (flags & LIBNDR_FLAG_STR_UTF8) {
+ chset = CH_UTF8;
+ byte_mul = 1;
+ flags &= ~LIBNDR_FLAG_STR_UTF8;
+ }
+
+ flags &= ~LIBNDR_FLAG_STR_CONFORMANT;
+ if (flags & LIBNDR_FLAG_STR_CHARLEN) {
+ c_len_term = 1;
+ flags &= ~LIBNDR_FLAG_STR_CHARLEN;
+ }
+
+ switch (flags & LIBNDR_STRING_FLAGS) {
+ case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_SIZE4:
+ case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_SIZE4|LIBNDR_FLAG_STR_NOTERM:
+ NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &len1));
+ NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &ofs));
+ if (ofs != 0) {
+ return ndr_pull_error(ndr, NDR_ERR_STRING, "non-zero array offset with string flags 0x%x\n",
+ ndr->flags & LIBNDR_STRING_FLAGS);
+ }
+ NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &len2));
+ if (len2 > len1) {
+ return ndr_pull_error(ndr, NDR_ERR_STRING,
+ "Bad string lengths len1=%u ofs=%u len2=%u\n",
+ len1, ofs, len2);
+ }
+ if (len2 == 0) {
+ *s = talloc_strdup(ndr, "");
+ break;
+ }
+ NDR_PULL_NEED_BYTES(ndr, (len2 + c_len_term)*byte_mul);
+ ret = convert_string_talloc(ndr, chset, CH_UNIX,
+ ndr->data+ndr->offset,
+ (len2 + c_len_term)*byte_mul,
+ (void **)&as);
+ if (ret == -1) {
+ return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ NDR_CHECK(ndr_pull_advance(ndr, (len2 + c_len_term)*byte_mul));
+
+ /* this is a way of detecting if a string is sent with the wrong
+ termination */
+ if (ndr->flags & LIBNDR_FLAG_STR_NOTERM) {
+ if (strlen(as) < (len2 + c_len_term)) {
+ DEBUG(6,("short string '%s'\n", as));
+ }
+ } else {
+ if (strlen(as) == (len2 + c_len_term)) {
+ DEBUG(6,("long string '%s'\n", as));
+ }
+ }
+ *s = as;
+ break;
+
+ case LIBNDR_FLAG_STR_SIZE4:
+ case LIBNDR_FLAG_STR_SIZE4|LIBNDR_FLAG_STR_NOTERM:
+ NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &len1));
+ NDR_PULL_NEED_BYTES(ndr, (len1 + c_len_term)*byte_mul);
+ if (len1 == 0) {
+ *s = talloc_strdup(ndr, "");
+ break;
+ }
+ ret = convert_string_talloc(ndr, chset, CH_UNIX,
+ ndr->data+ndr->offset,
+ (len1 + c_len_term)*byte_mul,
+ (void **)&as);
+ if (ret == -1) {
+ return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ NDR_CHECK(ndr_pull_advance(ndr, (len1 + c_len_term)*byte_mul));
+
+ /* this is a way of detecting if a string is sent with the wrong
+ termination */
+ if (ndr->flags & LIBNDR_FLAG_STR_NOTERM) {
+ if (strlen(as) < (len1 + c_len_term)) {
+ DEBUG(6,("short string '%s'\n", as));
+ }
+ } else {
+ if (strlen(as) == (len1 + c_len_term)) {
+ DEBUG(6,("long string '%s'\n", as));
+ }
+ }
+ *s = as;
+ break;
+
+ case LIBNDR_FLAG_STR_LEN4:
+ case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_NOTERM:
+ NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &ofs));
+ if (ofs != 0) {
+ return ndr_pull_error(ndr, NDR_ERR_STRING, "non-zero array offset with string flags 0x%x\n",
+ ndr->flags & LIBNDR_STRING_FLAGS);
+ }
+ NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &len1));
+ NDR_PULL_NEED_BYTES(ndr, (len1 + c_len_term)*byte_mul);
+ if (len1 == 0) {
+ *s = talloc_strdup(ndr, "");
+ break;
+ }
+ ret = convert_string_talloc(ndr, chset, CH_UNIX,
+ ndr->data+ndr->offset,
+ (len1 + c_len_term)*byte_mul,
+ (void **)&as);
+ if (ret == -1) {
+ return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ NDR_CHECK(ndr_pull_advance(ndr, (len1 + c_len_term)*byte_mul));
+
+ /* this is a way of detecting if a string is sent with the wrong
+ termination */
+ if (ndr->flags & LIBNDR_FLAG_STR_NOTERM) {
+ if (strlen(as) < (len1 + c_len_term)) {
+ DEBUG(6,("short string '%s'\n", as));
+ }
+ } else {
+ if (strlen(as) == (len1 + c_len_term)) {
+ DEBUG(6,("long string '%s'\n", as));
+ }
+ }
+ *s = as;
+ break;
+
+
+ case LIBNDR_FLAG_STR_SIZE2:
+ case LIBNDR_FLAG_STR_SIZE2|LIBNDR_FLAG_STR_NOTERM:
+ NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &len3));
+ NDR_PULL_NEED_BYTES(ndr, (len3 + c_len_term)*byte_mul);
+ if (len3 == 0) {
+ *s = talloc_strdup(ndr, "");
+ break;
+ }
+ ret = convert_string_talloc(ndr, chset, CH_UNIX,
+ ndr->data+ndr->offset,
+ (len3 + c_len_term)*byte_mul,
+ (void **)&as);
+ if (ret == -1) {
+ return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ NDR_CHECK(ndr_pull_advance(ndr, (len3 + c_len_term)*byte_mul));
+
+ /* this is a way of detecting if a string is sent with the wrong
+ termination */
+ if (ndr->flags & LIBNDR_FLAG_STR_NOTERM) {
+ if (strlen(as) < (len3 + c_len_term)) {
+ DEBUG(6,("short string '%s'\n", as));
+ }
+ } else {
+ if (strlen(as) == (len3 + c_len_term)) {
+ DEBUG(6,("long string '%s'\n", as));
+ }
+ }
+ *s = as;
+ break;
+
+ case LIBNDR_FLAG_STR_SIZE2|LIBNDR_FLAG_STR_NOTERM|LIBNDR_FLAG_STR_BYTESIZE:
+ NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &len3));
+ NDR_PULL_NEED_BYTES(ndr, len3);
+ if (len3 == 0) {
+ *s = talloc_strdup(ndr, "");
+ break;
+ }
+ ret = convert_string_talloc(ndr, chset, CH_UNIX,
+ ndr->data+ndr->offset,
+ len3,
+ (void **)&as);
+ if (ret == -1) {
+ return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ NDR_CHECK(ndr_pull_advance(ndr, len3));
+ *s = as;
+ break;
+
+ case LIBNDR_FLAG_STR_NULLTERM:
+ if (byte_mul == 1) {
+ len1 = ascii_len_n((const char *)(ndr->data+ndr->offset), ndr->data_size - ndr->offset);
+ } else {
+ len1 = utf16_len_n(ndr->data+ndr->offset, ndr->data_size - ndr->offset);
+ }
+ ret = convert_string_talloc(ndr, chset, CH_UNIX,
+ ndr->data+ndr->offset,
+ len1,
+ (void **)&as);
+ if (ret == -1) {
+ return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ NDR_CHECK(ndr_pull_advance(ndr, len1));
+ *s = as;
+ break;
+
+ case LIBNDR_FLAG_STR_FIXLEN15:
+ case LIBNDR_FLAG_STR_FIXLEN32:
+ len1 = (flags & LIBNDR_FLAG_STR_FIXLEN32)?32:15;
+ NDR_PULL_NEED_BYTES(ndr, len1*byte_mul);
+ ret = convert_string_talloc(ndr, chset, CH_UNIX,
+ ndr->data+ndr->offset,
+ len1*byte_mul,
+ (void **)&as);
+ if (ret == -1) {
+ return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ NDR_CHECK(ndr_pull_advance(ndr, len1*byte_mul));
+ *s = as;
+ break;
+
+ default:
+ return ndr_pull_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x\n",
+ ndr->flags & LIBNDR_STRING_FLAGS);
+ }
+
+ return NT_STATUS_OK;
+}
+
+
+/*
+ push a general string onto the wire
+*/
+NTSTATUS ndr_push_string(struct ndr_push *ndr, int ndr_flags, const char *s)
+{
+ ssize_t s_len, c_len, d_len;
+ int ret;
+ int chset = CH_UTF16;
+ unsigned flags = ndr->flags;
+ unsigned byte_mul = 2;
+ unsigned c_len_term = 1;
+
+ if (!(ndr_flags & NDR_SCALARS)) {
+ return NT_STATUS_OK;
+ }
+
+ if (NDR_BE(ndr)) {
+ chset = CH_UTF16BE;
+ }
+
+ s_len = s?strlen(s):0;
+ c_len = s?strlen_m(s):0;
+
+ if (flags & LIBNDR_FLAG_STR_ASCII) {
+ chset = CH_DOS;
+ byte_mul = 1;
+ flags &= ~LIBNDR_FLAG_STR_ASCII;
+ }
+
+ if (flags & LIBNDR_FLAG_STR_UTF8) {
+ chset = CH_UTF8;
+ byte_mul = 1;
+ flags &= ~LIBNDR_FLAG_STR_UTF8;
+ }
+
+ flags &= ~LIBNDR_FLAG_STR_CONFORMANT;
+
+ if (flags & LIBNDR_FLAG_STR_CHARLEN) {
+ c_len_term = 0;
+ flags &= ~LIBNDR_FLAG_STR_CHARLEN;
+ }
+
+ switch (flags & LIBNDR_STRING_FLAGS) {
+ case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_SIZE4:
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len+c_len_term));
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len+c_len_term));
+ NDR_PUSH_NEED_BYTES(ndr, byte_mul*(c_len+1));
+ ret = convert_string(CH_UNIX, chset,
+ s, s_len+1,
+ ndr->data+ndr->offset,
+ byte_mul*(c_len+1));
+ if (ret == -1) {
+ return ndr_push_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ ndr->offset += byte_mul*(c_len+1);
+ break;
+
+ case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_SIZE4|LIBNDR_FLAG_STR_NOTERM:
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len));
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len));
+ NDR_PUSH_NEED_BYTES(ndr, c_len*byte_mul);
+ ret = convert_string(CH_UNIX, chset,
+ s, s_len,
+ ndr->data+ndr->offset, c_len*byte_mul);
+ if (ret == -1) {
+ return ndr_push_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ ndr->offset += c_len*byte_mul;
+ break;
+
+ case LIBNDR_FLAG_STR_LEN4:
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len + c_len_term));
+ NDR_PUSH_NEED_BYTES(ndr, byte_mul*(c_len+1));
+ ret = convert_string(CH_UNIX, chset,
+ s, s_len + 1,
+ ndr->data+ndr->offset, byte_mul*(c_len+1));
+ if (ret == -1) {
+ return ndr_push_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ ndr->offset += byte_mul*(c_len+1);
+ break;
+
+ case LIBNDR_FLAG_STR_LEN4|LIBNDR_FLAG_STR_NOTERM:
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len));
+ NDR_PUSH_NEED_BYTES(ndr, byte_mul*c_len);
+ ret = convert_string(CH_UNIX, chset,
+ s, s_len,
+ ndr->data+ndr->offset, byte_mul*c_len);
+ if (ret == -1) {
+ return ndr_push_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ ndr->offset += byte_mul*c_len;
+ break;
+
+ case LIBNDR_FLAG_STR_SIZE4:
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, c_len + c_len_term));
+ NDR_PUSH_NEED_BYTES(ndr, byte_mul*(c_len+1));
+ ret = convert_string(CH_UNIX, chset,
+ s, s_len + 1,
+ ndr->data+ndr->offset, byte_mul*(c_len+1));
+ if (ret == -1) {
+ return ndr_push_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ ndr->offset += byte_mul*(c_len+1);
+ break;
+
+ case LIBNDR_FLAG_STR_SIZE2:
+ NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, c_len + c_len_term));
+ NDR_PUSH_NEED_BYTES(ndr, byte_mul*(c_len+1));
+ ret = convert_string(CH_UNIX, chset,
+ s, s_len + 1,
+ ndr->data+ndr->offset, byte_mul*(c_len+1));
+ if (ret == -1) {
+ return ndr_push_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ ndr->offset += byte_mul*(c_len+1);
+ break;
+
+ case LIBNDR_FLAG_STR_NULLTERM:
+ NDR_PUSH_NEED_BYTES(ndr, byte_mul*(c_len+1));
+ ret = convert_string(CH_UNIX, chset,
+ s, s_len+1,
+ ndr->data+ndr->offset, byte_mul*(c_len+1));
+ if (ret == -1) {
+ return ndr_push_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ ndr->offset += byte_mul*(c_len+1);
+ break;
+
+ case LIBNDR_FLAG_STR_SIZE2|LIBNDR_FLAG_STR_NOTERM|LIBNDR_FLAG_STR_BYTESIZE:
+ NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, c_len*byte_mul));
+ NDR_PUSH_NEED_BYTES(ndr, c_len*byte_mul);
+ ret = convert_string(CH_UNIX, chset,
+ s, s_len,
+ ndr->data+ndr->offset, c_len*byte_mul);
+ if (ret == -1) {
+ return ndr_push_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ ndr->offset += c_len*byte_mul;
+ break;
+
+ case LIBNDR_FLAG_STR_FIXLEN15:
+ case LIBNDR_FLAG_STR_FIXLEN32:
+ d_len = (flags & LIBNDR_FLAG_STR_FIXLEN32)?32:15;
+ NDR_PUSH_NEED_BYTES(ndr, byte_mul*d_len);
+ ret = convert_string(CH_UNIX, chset,
+ s, s_len,
+ ndr->data+ndr->offset, byte_mul*d_len);
+ if (ret == -1) {
+ return ndr_push_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion");
+ }
+ ndr->offset += byte_mul*d_len;
+ break;
+
+ default:
+ return ndr_push_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x\n",
+ ndr->flags & LIBNDR_STRING_FLAGS);
+ }
+
+ return NT_STATUS_OK;
+}
+
+/*
+ push a general string onto the wire
+*/
+size_t ndr_string_array_size(struct ndr_push *ndr, const char *s)
+{
+ size_t c_len;
+ unsigned flags = ndr->flags;
+ unsigned byte_mul = 2;
+ unsigned c_len_term = 1;
+
+ if (flags & LIBNDR_FLAG_STR_FIXLEN32) {
+ return 32;
+ }
+ if (flags & LIBNDR_FLAG_STR_FIXLEN15) {
+ return 15;
+ }
+
+ c_len = s?strlen_m(s):0;
+
+ if (flags & (LIBNDR_FLAG_STR_ASCII|LIBNDR_FLAG_STR_UTF8)) {
+ byte_mul = 1;
+ }
+
+ if (flags & LIBNDR_FLAG_STR_NOTERM) {
+ c_len_term = 0;
+ }
+
+ c_len = c_len + c_len_term;
+
+ if (flags & LIBNDR_FLAG_STR_BYTESIZE) {
+ c_len = c_len * byte_mul;
+ }
+
+ return c_len;
+}
+
+void ndr_print_string(struct ndr_print *ndr, const char *name, const char *s)
+{
+ if (s) {
+ ndr->print(ndr, "%-25s: '%s'", name, s);
+ } else {
+ ndr->print(ndr, "%-25s: NULL", name);
+ }
+}
+
+uint32_t ndr_size_string(int ret, const char * const* string, int flags)
+{
+ /* FIXME: Is this correct for all strings ? */
+ if(!(*string)) return ret;
+ return ret+strlen(*string)+1;
+}