static int mbox_write_content_length(struct mbox_save_context *ctx)
{
uoff_t end_offset;
const char *str;
size_t len;
i_assert(ctx->eoh_offset != (uoff_t)-1);
if (ctx->mbox->mbox_writeonly) {
/* we can't seek, don't set Content-Length */
return 0;
}
end_offset = ctx->output->offset;
/* write Content-Length headers */
str = t_strdup_printf("\nContent-Length: %s",
dec2str(end_offset - ctx->eoh_offset));
len = strlen(str);
/* flush manually here so that we don't confuse seek() errors with
buffer flushing errors */
if (o_stream_flush(ctx->output) < 0) {
write_error(ctx);
return -1;
}
if (o_stream_seek(ctx->output, ctx->extra_hdr_offset +
ctx->space_end_idx - len) < 0) {
mbox_set_syscall_error(ctx->mbox, "lseek()");
return -1;
}
if (o_stream_send(ctx->output, str, len) < 0 ||
o_stream_flush(ctx->output) < 0) {
write_error(ctx);
return -1;
}
if (o_stream_seek(ctx->output, end_offset) < 0) {
mbox_set_syscall_error(ctx->mbox, "lseek()");
return -1;
}
return 0;
}
static inline bool _save_skip
(struct sieve_binary *sbin, struct ostream *stream, size_t size)
{
if ( (o_stream_seek(stream, stream->offset + size)) <= 0 ) {
sieve_sys_error(sbin->svinst,
"binary save: failed to skip output stream "
"to position %"PRIuUOFF_T": %s", stream->offset + size,
strerror(stream->stream_errno));
return FALSE;
}
return TRUE;
}
int mbox_move(struct mbox_sync_context *sync_ctx,
uoff_t dest, uoff_t source, uoff_t size)
{
struct istream *input;
struct ostream *output;
off_t ret;
i_assert(size < OFF_T_MAX);
if (size == 0 || source == dest)
return 0;
i_stream_sync(sync_ctx->input);
output = o_stream_create_fd_file(sync_ctx->write_fd, (uoff_t)-1, FALSE);
i_stream_seek(sync_ctx->file_input, source);
if (o_stream_seek(output, dest) < 0) {
mbox_set_syscall_error(sync_ctx->mbox,
"o_stream_seek()");
o_stream_unref(&output);
return -1;
}
input = i_stream_create_limit(sync_ctx->file_input, size);
ret = o_stream_send_istream(output, input);
i_stream_unref(&input);
if (ret == (off_t)size)
ret = 0;
else if (ret >= 0) {
mbox_sync_set_critical(sync_ctx,
"mbox_move(%"PRIuUOFF_T", %"PRIuUOFF_T", %"PRIuUOFF_T
") moved only %"PRIuUOFF_T" bytes",
dest, source, size, (uoff_t)ret);
ret = -1;
} else if (ret < 0) {
errno = output->stream_errno;
mbox_set_syscall_error(sync_ctx->mbox,
"o_stream_send_istream()");
}
mbox_sync_file_updated(sync_ctx, FALSE);
o_stream_destroy(&output);
return (int)ret;
}
static inline bool _save_skip_aligned
(struct sieve_binary *sbin, struct ostream *stream, size_t size,
uoff_t *offset)
{
uoff_t aligned_offset = SIEVE_BINARY_ALIGN(stream->offset);
if ( (o_stream_seek(stream, aligned_offset + size)) <= 0 ) {
sieve_sys_error(sbin->svinst, "binary save: failed to skip output stream "
"to position %"PRIuUOFF_T": %s", aligned_offset + size,
strerror(stream->stream_errno));
return FALSE;
}
if ( offset != NULL )
*offset = aligned_offset;
return TRUE;
}
static void out_clear(void)
{
o_stream_seek(server->output, 0);
str_truncate(out, 0);
}
static void test_ostream_file_send_istream_file(void)
{
struct istream *input, *input2;
struct ostream *output;
char buf[10];
int fd;
test_begin("ostream file send istream file");
/* temp file istream */
fd = open(".temp.istream", O_RDWR | O_CREAT | O_TRUNC, 0600);
if (fd == -1)
i_fatal("creat(.temp.istream) failed: %m");
test_assert(write(fd, "1234567890", 10) == 10);
test_assert(lseek(fd, 0, SEEK_SET) == 0);
input = i_stream_create_fd_autoclose(&fd, 1024);
/* temp file ostream */
fd = open(".temp.ostream", O_RDWR | O_CREAT | O_TRUNC, 0600);
if (fd == -1)
i_fatal("creat(.temp.ostream) failed: %m");
output = o_stream_create_fd(fd, 0);
/* test that writing works between two files */
i_stream_seek(input, 3);
input2 = i_stream_create_limit(input, 4);
test_assert(o_stream_send_istream(output, input2) == OSTREAM_SEND_ISTREAM_RESULT_FINISHED);
test_assert(output->offset == 4);
test_assert(pread(fd, buf, sizeof(buf), 0) == 4 &&
memcmp(buf, "4567", 4) == 0);
i_stream_unref(&input2);
/* test that writing works within the same file */
i_stream_destroy(&input);
input = i_stream_create_fd(fd, 1024);
/* forwards: 4567 -> 4677 */
o_stream_seek(output, 1);
i_stream_seek(input, 2);
input2 = i_stream_create_limit(input, 2);
test_assert(o_stream_send_istream(output, input2) == OSTREAM_SEND_ISTREAM_RESULT_FINISHED);
test_assert(output->offset == 3);
test_assert(pread(fd, buf, sizeof(buf), 0) == 4 &&
memcmp(buf, "4677", 4) == 0);
i_stream_destroy(&input2);
i_stream_destroy(&input);
/* backwards: 1234 -> 11234 */
memcpy(buf, "1234", 4);
test_assert(pwrite(fd, buf, 4, 0) == 4);
input = i_stream_create_fd(fd, 1024);
o_stream_seek(output, 1);
test_assert(o_stream_send_istream(output, input) == OSTREAM_SEND_ISTREAM_RESULT_FINISHED);
test_assert(output->offset == 5);
test_assert(pread(fd, buf, sizeof(buf), 0) == 5 &&
memcmp(buf, "11234", 5) == 0);
i_stream_destroy(&input);
o_stream_destroy(&output);
i_close_fd(&fd);
i_unlink(".temp.istream");
i_unlink(".temp.ostream");
test_end();
}
static bool _sieve_binary_save
(struct sieve_binary *sbin, struct ostream *stream)
{
struct sieve_binary_header header;
struct sieve_binary_extension_reg *const *regs;
struct sieve_binary_block *ext_block;
unsigned int ext_count, blk_count, i;
uoff_t block_index;
blk_count = sieve_binary_block_count(sbin);
/* Signal all extensions to finish generating their blocks */
regs = array_get(&sbin->extensions, &ext_count);
for ( i = 0; i < ext_count; i++ ) {
const struct sieve_binary_extension *binext = regs[i]->binext;
if ( binext != NULL && binext->binary_save != NULL )
binext->binary_save(regs[i]->extension, sbin, regs[i]->context);
}
/* Create header */
header.magic = SIEVE_BINARY_MAGIC;
header.version_major = SIEVE_BINARY_VERSION_MAJOR;
header.version_minor = SIEVE_BINARY_VERSION_MINOR;
header.blocks = blk_count;
if ( !_save_aligned(sbin, stream, &header, sizeof(header), NULL) ) {
sieve_sys_error(sbin->svinst, "binary save: failed to save header");
return FALSE;
}
/* Skip block index for now */
if ( !_save_skip_aligned(sbin, stream,
sizeof(struct sieve_binary_block_index) * blk_count, &block_index) )
return FALSE;
/* Create block containing all used extensions */
ext_block = sieve_binary_block_get(sbin, SBIN_SYSBLOCK_EXTENSIONS);
i_assert( ext_block != NULL );
sieve_binary_block_clear(ext_block);
ext_count = array_count(&sbin->linked_extensions);
sieve_binary_emit_unsigned(ext_block, ext_count);
for ( i = 0; i < ext_count; i++ ) {
struct sieve_binary_extension_reg * const *ext
= array_idx(&sbin->linked_extensions, i);
sieve_binary_emit_cstring
(ext_block, sieve_extension_name((*ext)->extension));
sieve_binary_emit_unsigned
(ext_block, sieve_extension_version((*ext)->extension));
sieve_binary_emit_unsigned(ext_block, (*ext)->block_id);
}
/* Save all blocks into the binary */
for ( i = 0; i < blk_count; i++ ) {
if ( !_save_block(sbin, stream, i) )
return FALSE;
}
/* Create the block index */
o_stream_seek(stream, block_index);
for ( i = 0; i < blk_count; i++ ) {
if ( !_save_block_index_record(sbin, stream, i) )
return FALSE;
}
return TRUE;
}
