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/* Copyright (c) 2002-2018 Pigeonhole authors, see the included COPYING file
*/
#include "lib.h"
#include "ostream.h"
#include "istream.h"
#include "iostream.h"
#include "sieve-script.h"
#include "sieve-storage.h"
#include "managesieve-common.h"
#include "managesieve-commands.h"
struct cmd_getscript_context {
struct client *client;
struct client_command_context *cmd;
struct sieve_storage *storage;
uoff_t script_size;
const char *scriptname;
struct sieve_script *script;
struct istream *script_stream;
bool failed:1;
};
static bool cmd_getscript_finish(struct cmd_getscript_context *ctx)
{
struct client_command_context *cmd = ctx->cmd;
struct client *client = ctx->client;
if (ctx->script != NULL)
sieve_script_unref(&ctx->script);
if (ctx->failed) {
if (client->output->closed) {
client_disconnect(client, NULL);
return TRUE;
}
client_command_storage_error(
cmd, "Failed to retrieve script `%s'", ctx->scriptname);
return TRUE;
}
client->get_count++;
client->get_bytes += ctx->script_size;
struct event_passthrough *e =
client_command_create_finish_event(cmd);
e_debug(e->event(), "Retrieved script `%s'", ctx->scriptname);
client_send_line(client, "");
client_send_ok(client, "Getscript completed.");
return TRUE;
}
static bool cmd_getscript_continue(struct client_command_context *cmd)
{
struct client *client = cmd->client;
struct cmd_getscript_context *ctx = cmd->context;
switch (o_stream_send_istream(client->output, ctx->script_stream)) {
case OSTREAM_SEND_ISTREAM_RESULT_FINISHED:
if (ctx->script_stream->v_offset != ctx->script_size &&
!ctx->failed) {
/* Input stream gave less data than expected */
sieve_storage_set_critical(
ctx->storage, "GETSCRIPT for script `%s' "
"from %s got too little data: "
"%"PRIuUOFF_T" vs %"PRIuUOFF_T,
sieve_script_name(ctx->script),
sieve_script_location(ctx->script),
ctx->script_stream->v_offset, ctx->script_size);
client_disconnect(ctx->client, "GETSCRIPT failed");
ctx->failed = TRUE;
}
break;
case OSTREAM_SEND_ISTREAM_RESULT_WAIT_INPUT:
i_unreached();
case OSTREAM_SEND_ISTREAM_RESULT_WAIT_OUTPUT:
return FALSE;
case OSTREAM_SEND_ISTREAM_RESULT_ERROR_INPUT:
sieve_storage_set_critical(ctx->storage,
"o_stream_send_istream() failed for script `%s' "
"from %s: %s",
sieve_script_name(ctx->script),
sieve_script_location(ctx->script),
i_stream_get_error(ctx->script_stream));
ctx->failed = TRUE;
break;
case OSTREAM_SEND_ISTREAM_RESULT_ERROR_OUTPUT:
client_disconnect(ctx->client, NULL);
ctx->failed = TRUE;
break;
}
return cmd_getscript_finish(ctx);
}
bool cmd_getscript(struct client_command_context *cmd)
{
struct client *client = cmd->client;
struct cmd_getscript_context *ctx;
const char *scriptname;
enum sieve_error error;
/* <scriptname> */
if (!client_read_string_args(cmd, TRUE, 1, &scriptname))
return FALSE;
event_add_str(cmd->event, "script_name", scriptname);
ctx = p_new(cmd->pool, struct cmd_getscript_context, 1);
ctx->cmd = cmd;
ctx->client = client;
ctx->scriptname = p_strdup(cmd->pool, scriptname);
ctx->storage = client->storage;
ctx->failed = FALSE;
ctx->script = sieve_storage_open_script(client->storage, scriptname,
NULL);
if (ctx->script == NULL) {
ctx->failed = TRUE;
return cmd_getscript_finish(ctx);
}
if (sieve_script_get_stream(ctx->script, &ctx->script_stream,
&error) < 0 ) {
if (error == SIEVE_ERROR_NOT_FOUND) {
sieve_storage_set_error(client->storage, error,
"Script does not exist.");
}
ctx->failed = TRUE;
return cmd_getscript_finish(ctx);
}
if (sieve_script_get_size(ctx->script, &ctx->script_size) <= 0) {
sieve_storage_set_critical(ctx->storage,
"failed to obtain script size for script `%s' from %s",
sieve_script_name(ctx->script),
sieve_script_location(ctx->script));
ctx->failed = TRUE;
return cmd_getscript_finish(ctx);
}
i_assert(ctx->script_stream->v_offset == 0);
client_send_line(client, t_strdup_printf("{%"PRIuUOFF_T"}",
ctx->script_size));
client->command_pending = TRUE;
cmd->func = cmd_getscript_continue;
cmd->context = ctx;
return cmd_getscript_continue(cmd);
}
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