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Diffstat (limited to 'librpc/ndr/ndr_string.c')
-rw-r--r--librpc/ndr/ndr_string.c266
1 files changed, 87 insertions, 179 deletions
diff --git a/librpc/ndr/ndr_string.c b/librpc/ndr/ndr_string.c
index 6e20333f04..840776fa3a 100644
--- a/librpc/ndr/ndr_string.c
+++ b/librpc/ndr/ndr_string.c
@@ -30,8 +30,8 @@ _PUBLIC_ enum ndr_err_code ndr_pull_string(struct ndr_pull *ndr, int ndr_flags,
char *as=NULL;
uint32_t len1, ofs, len2;
uint16_t len3;
- size_t converted_size;
- int chset = CH_UTF16;
+ size_t conv_src_len = 0, converted_size;
+ int do_convert = 1, chset = CH_UTF16;
unsigned byte_mul = 2;
unsigned flags = ndr->flags;
unsigned c_len_term = 0;
@@ -56,6 +56,12 @@ _PUBLIC_ enum ndr_err_code ndr_pull_string(struct ndr_pull *ndr, int ndr_flags,
flags &= ~LIBNDR_FLAG_STR_UTF8;
}
+ if (flags & LIBNDR_FLAG_STR_RAW8) {
+ do_convert = 0;
+ byte_mul = 1;
+ flags &= ~LIBNDR_FLAG_STR_RAW8;
+ }
+
flags &= ~LIBNDR_FLAG_STR_CONFORMANT;
if (flags & LIBNDR_FLAG_STR_CHARLEN) {
c_len_term = 1;
@@ -73,77 +79,19 @@ _PUBLIC_ enum ndr_err_code ndr_pull_string(struct ndr_pull *ndr, int ndr_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",
+ return ndr_pull_error(ndr, NDR_ERR_STRING,
+ "Bad string lengths len1=%u ofs=%u len2=%u\n",
len1, ofs, len2);
- }
- NDR_PULL_NEED_BYTES(ndr, (len2 + c_len_term)*byte_mul);
- if (len2 == 0) {
- as = talloc_strdup(ndr->current_mem_ctx, "");
- } else {
- if (!convert_string_talloc(ndr->current_mem_ctx, chset,
- CH_UNIX,
- ndr->data+ndr->offset,
- (len2 + c_len_term)*byte_mul,
- (void **)(void *)&as,
- &converted_size))
- {
- return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
- "Bad character conversion with flags 0x%x", flags);
- }
- }
- NDR_CHECK(ndr_pull_advance(ndr, (len2 + c_len_term)*byte_mul));
-
- if (len1 != len2) {
+ } else if (len1 != len2) {
DEBUG(6,("len1[%u] != len2[%u] '%s'\n", len1, len2, as));
}
-
- /* 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;
+ conv_src_len = len2 + c_len_term;
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) {
- as = talloc_strdup(ndr->current_mem_ctx, "");
- } else {
- if (!convert_string_talloc(ndr->current_mem_ctx, chset,
- CH_UNIX,
- ndr->data+ndr->offset,
- (len1 + c_len_term)*byte_mul,
- (void **)(void *)&as,
- &converted_size))
- {
- return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
- "Bad character conversion with flags 0x%x", flags);
- }
- }
- 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;
+ conv_src_len = len1 + c_len_term;
break;
case LIBNDR_FLAG_STR_LEN4:
@@ -154,108 +102,28 @@ _PUBLIC_ enum ndr_err_code ndr_pull_string(struct ndr_pull *ndr, int ndr_flags,
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) {
- as = talloc_strdup(ndr->current_mem_ctx, "");
- } else {
- if (!convert_string_talloc(ndr->current_mem_ctx, chset,
- CH_UNIX,
- ndr->data+ndr->offset,
- (len1 + c_len_term)*byte_mul,
- (void **)(void *)&as,
- &converted_size))
- {
- return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
- "Bad character conversion with flags 0x%x", flags);
- }
- }
- 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;
+ conv_src_len = len1 + c_len_term;
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) {
- as = talloc_strdup(ndr->current_mem_ctx, "");
- } else {
- if (!convert_string_talloc(ndr->current_mem_ctx, chset,
- CH_UNIX,
- ndr->data+ndr->offset,
- (len3 + c_len_term)*byte_mul,
- (void **)(void *)&as,
- &converted_size))
- {
- return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
- "Bad character conversion with flags 0x%x", flags);
- }
- }
- 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;
+ conv_src_len = len3 + c_len_term;
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) {
- as = talloc_strdup(ndr->current_mem_ctx, "");
- } else {
- if (!convert_string_talloc(ndr->current_mem_ctx, chset,
- CH_UNIX,
- ndr->data+ndr->offset, len3,
- (void **)(void *)&as,
- &converted_size))
- {
- return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
- "Bad character conversion with flags 0x%x", flags);
- }
- }
- NDR_CHECK(ndr_pull_advance(ndr, len3));
- *s = as;
+ conv_src_len = len3;
+ byte_mul = 1; /* the length is now absolute */
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);
+ conv_src_len = 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);
- }
- if (!convert_string_talloc(ndr->current_mem_ctx, chset, CH_UNIX,
- ndr->data+ndr->offset, len1,
- (void **)(void *)&as,
- &converted_size))
- {
- return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
- "Bad character conversion with flags 0x%x", flags);
+ conv_src_len = utf16_len_n(ndr->data+ndr->offset, ndr->data_size - ndr->offset);
}
- NDR_CHECK(ndr_pull_advance(ndr, len1));
- *s = as;
+ byte_mul = 1; /* the length is now absolute */
break;
case LIBNDR_FLAG_STR_NOTERM:
@@ -263,26 +131,8 @@ _PUBLIC_ enum ndr_err_code ndr_pull_string(struct ndr_pull *ndr, int ndr_flags,
return ndr_pull_error(ndr, NDR_ERR_STRING, "Bad string flags 0x%x (missing NDR_REMAINING)\n",
ndr->flags & LIBNDR_STRING_FLAGS);
}
-
- len1 = ndr->data_size - ndr->offset;
-
- NDR_PULL_NEED_BYTES(ndr, len1);
- if (len1 == 0) {
- as = talloc_strdup(ndr->current_mem_ctx, "");
- } else {
- if (!convert_string_talloc(ndr->current_mem_ctx, chset,
- CH_UNIX,
- ndr->data+ndr->offset, len1,
- (void **)(void *)&as,
- &converted_size))
- {
- return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
- "Bad character conversion with flags 0x%x", flags);
- }
- }
- NDR_CHECK(ndr_pull_advance(ndr, len1));
-
- *s = as;
+ conv_src_len = ndr->data_size - ndr->offset;
+ byte_mul = 1; /* the length is now absolute */
break;
default:
@@ -290,6 +140,45 @@ _PUBLIC_ enum ndr_err_code ndr_pull_string(struct ndr_pull *ndr, int ndr_flags,
ndr->flags & LIBNDR_STRING_FLAGS);
}
+ NDR_PULL_NEED_BYTES(ndr, conv_src_len * byte_mul);
+ if (conv_src_len == 0) {
+ as = talloc_strdup(ndr->current_mem_ctx, "");
+ converted_size = 0;
+ } else {
+ if (!do_convert) {
+ as = talloc_strndup(ndr->current_mem_ctx,
+ (char *)ndr->data + ndr->offset,
+ conv_src_len);
+ if (!as) {
+ return ndr_pull_error(ndr, NDR_ERR_ALLOC,
+ "Failed to talloc_strndup() in RAW8 ndr_string_pull()");
+ }
+ converted_size = MIN(strlen(as)+1, conv_src_len);
+ } else if (!convert_string_talloc(ndr->current_mem_ctx, chset,
+ CH_UNIX, ndr->data + ndr->offset,
+ conv_src_len * byte_mul,
+ (void **)(void *)&as,
+ &converted_size)) {
+ return ndr_pull_error(ndr, NDR_ERR_CHARCNV,
+ "Bad character conversion with flags 0x%x", flags);
+ }
+ }
+
+ /* this is a way of detecting if a string is sent with the wrong
+ termination */
+ if (ndr->flags & LIBNDR_FLAG_STR_NOTERM) {
+ if (as && converted_size > 0 && as[converted_size-1] == '\0') {
+ DEBUG(6,("short string '%s', sent with NULL termination despite NOTERM flag in IDL\n", as));
+ }
+ } else {
+ if (as && converted_size > 0 && as[converted_size-1] != '\0') {
+ DEBUG(6,("long string '%s', send without NULL termination (which was expected)\n", as));
+ }
+ }
+
+ NDR_CHECK(ndr_pull_advance(ndr, conv_src_len * byte_mul));
+ *s = as;
+
return NDR_ERR_SUCCESS;
}
@@ -301,7 +190,7 @@ _PUBLIC_ enum ndr_err_code ndr_push_string(struct ndr_push *ndr, int ndr_flags,
{
ssize_t s_len, c_len;
size_t d_len;
- int chset = CH_UTF16;
+ int do_convert = 1, chset = CH_UTF16;
unsigned flags = ndr->flags;
unsigned byte_mul = 2;
uint8_t *dest = NULL;
@@ -328,12 +217,22 @@ _PUBLIC_ enum ndr_err_code ndr_push_string(struct ndr_push *ndr, int ndr_flags,
flags &= ~LIBNDR_FLAG_STR_UTF8;
}
+ if (flags & LIBNDR_FLAG_STR_RAW8) {
+ do_convert = 0;
+ byte_mul = 1;
+ flags &= ~LIBNDR_FLAG_STR_RAW8;
+ }
+
flags &= ~LIBNDR_FLAG_STR_CONFORMANT;
if (!(flags & LIBNDR_FLAG_STR_NOTERM)) {
s_len++;
}
- if (!convert_string_talloc(ndr, CH_UNIX, chset, s, s_len,
+
+ if (!do_convert) {
+ d_len = s_len;
+ dest = (uint8_t *)talloc_strndup(ndr, s, s_len);
+ } else if (!convert_string_talloc(ndr, CH_UNIX, chset, s, s_len,
(void **)(void *)&dest, &d_len))
{
return ndr_push_error(ndr, NDR_ERR_CHARCNV,
@@ -403,9 +302,13 @@ _PUBLIC_ size_t ndr_string_array_size(struct ndr_push *ndr, const char *s)
unsigned byte_mul = 2;
unsigned c_len_term = 1;
- c_len = s?strlen_m(s):0;
+ if (flags & LIBNDR_FLAG_STR_RAW8) {
+ c_len = s?strlen(s):0;
+ } else {
+ c_len = s?strlen_m(s):0;
+ }
- if (flags & (LIBNDR_FLAG_STR_ASCII|LIBNDR_FLAG_STR_UTF8)) {
+ if (flags & (LIBNDR_FLAG_STR_ASCII|LIBNDR_FLAG_STR_RAW8|LIBNDR_FLAG_STR_UTF8)) {
byte_mul = 1;
}
@@ -611,16 +514,22 @@ _PUBLIC_ size_t ndr_size_string_array(const char **a, uint32_t count, int flags)
{
uint32_t i;
size_t size = 0;
+ int rawbytes = 0;
+
+ if (flags & LIBNDR_FLAG_STR_RAW8) {
+ rawbytes = 1;
+ flags &= ~LIBNDR_FLAG_STR_RAW8;
+ }
switch (flags & LIBNDR_STRING_FLAGS) {
case LIBNDR_FLAG_STR_NULLTERM:
for (i = 0; i < count; i++) {
- size += strlen_m_term(a[i]);
+ size += rawbytes?strlen(a[i]) + 1:strlen_m_term(a[i]);
}
break;
case LIBNDR_FLAG_STR_NOTERM:
for (i = 0; i < count; i++) {
- size += strlen_m(a[i]);
+ size += rawbytes?strlen(a[i]):strlen_m(a[i]);
}
break;
default:
@@ -736,7 +645,6 @@ _PUBLIC_ uint32_t ndr_charset_length(const void *var, charset_t chset)
case CH_UTF16MUNGED:
case CH_UTF8:
return strlen_m_ext_term((const char *)var, CH_UNIX, chset);
- case CH_DISPLAY:
case CH_DOS:
case CH_UNIX:
return strlen((const char *)var)+1;
generated by cgit (git 2.34.1) at 2025-02-04 07:19:54 +0000