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-rw-r--r--camel/providers/imap/camel-imap-command.c781
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diff --git a/camel/providers/imap/camel-imap-command.c b/camel/providers/imap/camel-imap-command.c
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--- a/camel/providers/imap/camel-imap-command.c
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@@ -1,781 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/* camel-imap-command.c: IMAP command sending/parsing routines */
-
-/*
- * Authors:
- * Dan Winship <danw@ximian.com>
- * Jeffrey Stedfast <fejj@ximian.com>
- *
- * Copyright 2000, 2001 Ximian, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * 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., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdarg.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-
-#include "camel-imap-command.h"
-#include "camel-imap-utils.h"
-#include "camel-imap-folder.h"
-#include "camel-imap-store.h"
-#include "camel-imap-private.h"
-#include <camel/camel-exception.h>
-
-static gboolean imap_command_start (CamelImapStore *store, CamelFolder *folder,
- const char *cmd, CamelException *ex);
-CamelImapResponse *imap_read_response (CamelImapStore *store,
- CamelException *ex);
-static char *imap_read_untagged (CamelImapStore *store, char *line,
- CamelException *ex);
-static char *imap_command_strdup_vprintf (CamelImapStore *store,
- const char *fmt, va_list ap);
-static char *imap_command_strdup_printf (CamelImapStore *store,
- const char *fmt, ...);
-
-/**
- * camel_imap_command:
- * @store: the IMAP store
- * @folder: The folder to perform the operation in (or %NULL if not
- * relevant).
- * @ex: a CamelException
- * @fmt: a sort of printf-style format string, followed by arguments
- *
- * This function calls camel_imap_command_start() to send the
- * command, then reads the complete response to it using
- * camel_imap_command_response() and returns a CamelImapResponse
- * structure.
- *
- * As a special case, if @fmt is %NULL, it will just select @folder
- * and return the response from doing so.
- *
- * See camel_imap_command_start() for details on @fmt.
- *
- * On success, the store's command_lock will be locked. It will be freed
- * when you call camel_imap_response_free. (The lock is recursive, so
- * callers can grab and release it themselves if they need to run
- * multiple commands atomically.)
- *
- * Return value: %NULL if an error occurred (in which case @ex will
- * be set). Otherwise, a CamelImapResponse describing the server's
- * response, which the caller must free with camel_imap_response_free().
- **/
-CamelImapResponse *
-camel_imap_command (CamelImapStore *store, CamelFolder *folder,
- CamelException *ex, const char *fmt, ...)
-{
- va_list ap;
- char *cmd;
-
- CAMEL_IMAP_STORE_LOCK (store, command_lock);
-
- if (fmt) {
- va_start (ap, fmt);
- cmd = imap_command_strdup_vprintf (store, fmt, ap);
- va_end (ap);
- } else {
- if (store->current_folder) {
- camel_object_unref (CAMEL_OBJECT (store->current_folder));
- store->current_folder = NULL;
- }
- store->current_folder = folder;
- camel_object_ref (CAMEL_OBJECT (folder));
- cmd = imap_command_strdup_printf (store, "SELECT %F",
- folder->full_name);
- }
-
- if (!imap_command_start (store, folder, cmd, ex)) {
- g_free (cmd);
- CAMEL_IMAP_STORE_UNLOCK (store, command_lock);
- return NULL;
- }
- g_free (cmd);
-
- return imap_read_response (store, ex);
-}
-
-/**
- * camel_imap_command_start:
- * @store: the IMAP store
- * @folder: The folder to perform the operation in (or %NULL if not
- * relevant).
- * @ex: a CamelException
- * @fmt: a sort of printf-style format string, followed by arguments
- *
- * This function makes sure that @folder (if non-%NULL) is the
- * currently-selected folder on @store and then sends the IMAP command
- * specified by @fmt and the following arguments.
- *
- * @fmt can include the following %-escapes ONLY:
- * %s, %d, %%: as with printf
- * %S: an IMAP "string" (quoted string or literal)
- * %F: an IMAP folder name
- *
- * %S strings will be passed as literals if the server supports LITERAL+
- * and quoted strings otherwise. (%S does not support strings that
- * contain newlines.)
- *
- * %F will have the imap store's namespace prepended and then be processed
- * like %S.
- *
- * On success, the store's command_lock will be locked. It will be
- * freed when %CAMEL_IMAP_RESPONSE_TAGGED or %CAMEL_IMAP_RESPONSE_ERROR
- * is returned from camel_imap_command_response(). (The lock is
- * recursive, so callers can grab and release it themselves if they
- * need to run multiple commands atomically.)
- *
- * Return value: %TRUE if the command was sent successfully, %FALSE if
- * an error occurred (in which case @ex will be set).
- **/
-gboolean
-camel_imap_command_start (CamelImapStore *store, CamelFolder *folder,
- CamelException *ex, const char *fmt, ...)
-{
- va_list ap;
- char *cmd;
- gboolean ok;
-
- va_start (ap, fmt);
- cmd = imap_command_strdup_vprintf (store, fmt, ap);
- va_end (ap);
-
- CAMEL_IMAP_STORE_LOCK (store, command_lock);
- ok = imap_command_start (store, folder, cmd, ex);
- g_free (cmd);
-
- if (!ok)
- CAMEL_IMAP_STORE_UNLOCK (store, command_lock);
- return ok;
-}
-
-static gboolean
-imap_command_start (CamelImapStore *store, CamelFolder *folder,
- const char *cmd, CamelException *ex)
-{
- /* Check for current folder */
- if (folder && folder != store->current_folder) {
- CamelImapResponse *response;
- CamelException internal_ex;
-
- response = camel_imap_command (store, folder, ex, NULL);
- if (!response)
- return FALSE;
- camel_exception_init (&internal_ex);
- camel_imap_folder_selected (folder, response, &internal_ex);
- camel_imap_response_free (store, response);
- if (camel_exception_is_set (&internal_ex)) {
- camel_exception_xfer (ex, &internal_ex);
- return FALSE;
- }
- }
-
- /* Send the command */
- return camel_remote_store_send_string (CAMEL_REMOTE_STORE (store), ex,
- "%c%.5d %s\r\n",
- store->tag_prefix,
- store->command++, cmd) != -1;
-}
-
-/**
- * camel_imap_command_continuation:
- * @store: the IMAP store
- * @cmd: buffer containing the response/request data
- * @cmdlen: command length
- * @ex: a CamelException
- *
- * This method is for sending continuing responses to the IMAP server
- * after camel_imap_command() or camel_imap_command_response() returns
- * a continuation response.
- *
- * This function assumes you have an exclusive lock on the remote stream.
- *
- * Return value: as for camel_imap_command(). On failure, the store's
- * command_lock will be released.
- **/
-CamelImapResponse *
-camel_imap_command_continuation (CamelImapStore *store, const char *cmd,
- size_t cmdlen, CamelException *ex)
-{
- CamelStream *stream;
-
- if (!camel_remote_store_connected (CAMEL_REMOTE_STORE (store), ex))
- return NULL;
-
- stream = CAMEL_REMOTE_STORE (store)->ostream;
-
- if (camel_stream_write (stream, cmd, cmdlen) == -1 ||
- camel_stream_write (stream, "\r\n", 2) == -1) {
- if (errno == EINTR)
- camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
- _("Operation cancelled"));
- else
- camel_exception_set (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
- g_strerror (errno));
- camel_service_disconnect (CAMEL_SERVICE (store), FALSE, NULL);
- CAMEL_IMAP_STORE_UNLOCK (store, command_lock);
- return NULL;
- }
-
- return imap_read_response (store, ex);
-}
-
-/**
- * camel_imap_command_response:
- * @store: the IMAP store
- * @response: a pointer to pass back the response data in
- * @ex: a CamelException
- *
- * This reads a single tagged, untagged, or continuation response from
- * @store into *@response. The caller must free the string when it is
- * done with it.
- *
- * Return value: One of %CAMEL_IMAP_RESPONSE_CONTINUATION,
- * %CAMEL_IMAP_RESPONSE_UNTAGGED, %CAMEL_IMAP_RESPONSE_TAGGED, or
- * %CAMEL_IMAP_RESPONSE_ERROR. If either of the last two, @store's
- * command lock will be unlocked.
- **/
-CamelImapResponseType
-camel_imap_command_response (CamelImapStore *store, char **response,
- CamelException *ex)
-{
- CamelImapResponseType type;
- char *respbuf;
-
- if (camel_remote_store_recv_line (CAMEL_REMOTE_STORE (store),
- &respbuf, ex) < 0) {
- CAMEL_IMAP_STORE_UNLOCK (store, command_lock);
- return CAMEL_IMAP_RESPONSE_ERROR;
- }
-
- switch (*respbuf) {
- case '*':
- if (!g_strncasecmp (respbuf, "* BYE", 5)) {
- /* Connection was lost, no more data to fetch */
- camel_service_disconnect (CAMEL_SERVICE (store), FALSE, NULL);
- camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
- _("Server unexpectedly disconnected: %s"),
- _("Unknown error")); /* g_strerror (104)); FIXME after 1.0 is released */
- store->connected = FALSE;
- g_free (respbuf);
- respbuf = NULL;
- type = CAMEL_IMAP_RESPONSE_ERROR;
- break;
- }
-
- /* Read the rest of the response. */
- type = CAMEL_IMAP_RESPONSE_UNTAGGED;
- respbuf = imap_read_untagged (store, respbuf, ex);
- if (!respbuf)
- type = CAMEL_IMAP_RESPONSE_ERROR;
-
- break;
- case '+':
- type = CAMEL_IMAP_RESPONSE_CONTINUATION;
- break;
- default:
- type = CAMEL_IMAP_RESPONSE_TAGGED;
- break;
- }
- *response = respbuf;
-
- if (type == CAMEL_IMAP_RESPONSE_ERROR ||
- type == CAMEL_IMAP_RESPONSE_TAGGED)
- CAMEL_IMAP_STORE_UNLOCK (store, command_lock);
-
- return type;
-}
-
-CamelImapResponse *
-imap_read_response (CamelImapStore *store, CamelException *ex)
-{
- CamelImapResponse *response;
- CamelImapResponseType type;
- char *respbuf, *p;
-
- /* Get another lock so that when we reach the tagged
- * response and camel_imap_command_response unlocks,
- * we're still locked. This lock is owned by response
- * and gets unlocked when response is freed.
- */
- CAMEL_IMAP_STORE_LOCK (store, command_lock);
-
- response = g_new0 (CamelImapResponse, 1);
- if (store->current_folder && camel_disco_store_status (CAMEL_DISCO_STORE (store)) != CAMEL_DISCO_STORE_RESYNCING) {
- response->folder = store->current_folder;
- camel_object_ref (CAMEL_OBJECT (response->folder));
- }
-
- response->untagged = g_ptr_array_new ();
- while ((type = camel_imap_command_response (store, &respbuf, ex))
- == CAMEL_IMAP_RESPONSE_UNTAGGED)
- g_ptr_array_add (response->untagged, respbuf);
-
- if (type == CAMEL_IMAP_RESPONSE_ERROR) {
- camel_imap_response_free_without_processing (store, response);
- return NULL;
- }
-
- response->status = respbuf;
-
- /* Check for OK or continuation response. */
- if (*respbuf == '+')
- return response;
- p = strchr (respbuf, ' ');
- if (p && !g_strncasecmp (p, " OK", 3))
- return response;
-
- /* We should never get BAD, or anything else but +, OK, or NO
- * for that matter.
- */
- if (!p || g_strncasecmp (p, " NO", 3) != 0) {
- g_warning ("Unexpected response from IMAP server: %s",
- respbuf);
- camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
- _("Unexpected response from IMAP "
- "server: %s"), respbuf);
- camel_imap_response_free_without_processing (store, response);
- return NULL;
- }
-
- p += 3;
- if (!*p++)
- p = NULL;
- camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
- _("IMAP command failed: %s"),
- p ? p : _("Unknown error"));
- camel_imap_response_free_without_processing (store, response);
- return NULL;
-}
-
-/* Given a line that is the start of an untagged response, read and
- * return the complete response, which may include an arbitrary number
- * of literals.
- */
-static char *
-imap_read_untagged (CamelImapStore *store, char *line, CamelException *ex)
-{
- int fulllen, length, ldigits, nread, i;
- GPtrArray *data;
- GString *str;
- char *end, *p, *s, *d;
-
- p = strrchr (line, '{');
- if (!p)
- return line;
-
- data = g_ptr_array_new ();
- fulllen = 0;
-
- while (1) {
- str = g_string_new (line);
- g_free (line);
- fulllen += str->len;
- g_ptr_array_add (data, str);
-
- p = strrchr (str->str, '{');
- if (!p)
- break;
-
- length = strtoul (p + 1, &end, 10);
- if (*end != '}' || *(end + 1) || end == p + 1)
- break;
- ldigits = end - (p + 1);
-
- /* Read the literal */
- str = g_string_sized_new (length + 2);
- str->str[0] = '\n';
- nread = camel_stream_read (CAMEL_REMOTE_STORE (store)->istream,
- str->str + 1, length);
- if (nread == -1) {
- if (errno == EINTR)
- camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL, _("Operation cancelled"));
- else
- camel_exception_set (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE, g_strerror (errno));
- camel_service_disconnect (CAMEL_SERVICE (store), FALSE, NULL);
- goto lose;
- }
- if (nread < length) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
- _("Server response ended too soon."));
- camel_service_disconnect (CAMEL_SERVICE (store), FALSE, NULL);
- goto lose;
- }
- str->str[length + 1] = '\0';
-
- /* Fix up the literal, turning CRLFs into LF. Also, if
- * we find any embedded NULs, strip them. This is
- * dubious, but:
- * - The IMAP grammar says you can't have NULs here
- * anyway, so this will not affect our behavior
- * against any completely correct server.
- * - WU-imapd 12.264 (at least) will cheerily pass
- * NULs along if they are embedded in the message
- * - The only cause of embedded NULs we've seen is an
- * Evolution base64-encoder bug that sometimes
- * inserts a NUL into the last line when it
- * shouldn't.
- */
-
- s = d = str->str + 1;
- end = str->str + 1 + length;
- while (s < end) {
- while (s < end && *s == '\0') {
- s++;
- length--;
- }
- if (*s == '\r' && *(s + 1) == '\n') {
- s++;
- length--;
- }
- *d++ = *s++;
- }
- *d = '\0';
- str->len = length + 1;
-
- /* p points to the "{" in the line that starts the
- * literal. The length of the CR-less response must be
- * less than or equal to the length of the response
- * with CRs, therefore overwriting the old value with
- * the new value cannot cause an overrun. However, we
- * don't want it to be shorter either, because then the
- * GString's length would be off...
- */
- sprintf (p, "{%0*d}", ldigits, length);
-
- fulllen += str->len;
- g_ptr_array_add (data, str);
-
- /* Read the next line. */
- if (camel_remote_store_recv_line (CAMEL_REMOTE_STORE (store),
- &line, ex) < 0)
- goto lose;
- }
-
- /* Now reassemble the data. */
- p = line = g_malloc (fulllen + 1);
- for (i = 0; i < data->len; i++) {
- str = data->pdata[i];
- memcpy (p, str->str, str->len);
- p += str->len;
- g_string_free (str, TRUE);
- }
- *p = '\0';
- g_ptr_array_free (data, TRUE);
- return line;
-
- lose:
- for (i = 0; i < data->len; i++)
- g_string_free (data->pdata[i], TRUE);
- g_ptr_array_free (data, TRUE);
- return NULL;
-}
-
-
-/**
- * camel_imap_response_free:
- * @store: the CamelImapStore the response is from
- * @response: a CamelImapResponse
- *
- * Frees all of the data in @response and processes any untagged
- * EXPUNGE and EXISTS responses in it. Releases @store's command_lock.
- **/
-void
-camel_imap_response_free (CamelImapStore *store, CamelImapResponse *response)
-{
- int i, number, exists = 0;
- GArray *expunged = NULL;
- char *resp, *p;
-
- if (!response)
- return;
-
- for (i = 0; i < response->untagged->len; i++) {
- resp = response->untagged->pdata[i];
-
- if (response->folder) {
- /* Check if it's something we need to handle. */
- number = strtoul (resp + 2, &p, 10);
- if (!g_strcasecmp (p, " EXISTS")) {
- exists = number;
- } else if (!g_strcasecmp (p, " EXPUNGE")) {
- if (!expunged) {
- expunged = g_array_new (FALSE, FALSE,
- sizeof (int));
- }
- g_array_append_val (expunged, number);
- }
- }
- g_free (resp);
- }
-
- g_ptr_array_free (response->untagged, TRUE);
- g_free (response->status);
-
- if (response->folder) {
- if (exists > 0 || expunged) {
- /* Update the summary */
- camel_imap_folder_changed (response->folder,
- exists, expunged, NULL);
- if (expunged)
- g_array_free (expunged, TRUE);
- }
-
- camel_object_unref (CAMEL_OBJECT (response->folder));
- }
-
- g_free (response);
- CAMEL_IMAP_STORE_UNLOCK (store, command_lock);
-}
-
-/**
- * camel_imap_response_free_without_processing:
- * @store: the CamelImapStore the response is from.
- * @response: a CamelImapResponse:
- *
- * Frees all of the data in @response without processing any untagged
- * responses. Releases @store's command lock.
- **/
-void
-camel_imap_response_free_without_processing (CamelImapStore *store,
- CamelImapResponse *response)
-{
- if (response->folder) {
- camel_object_unref (CAMEL_OBJECT (response->folder));
- response->folder = NULL;
- }
- camel_imap_response_free (store, response);
-}
-
-/**
- * camel_imap_response_extract:
- * @store: the store the response came from
- * @response: the response data returned from camel_imap_command
- * @type: the response type to extract
- * @ex: a CamelException
- *
- * This checks that @response contains a single untagged response of
- * type @type and returns just that response data. If @response
- * doesn't contain the right information, the function will set @ex
- * and return %NULL. Either way, @response will be freed and the
- * store's command_lock released.
- *
- * Return value: the desired response string, which the caller must free.
- **/
-char *
-camel_imap_response_extract (CamelImapStore *store,
- CamelImapResponse *response,
- const char *type,
- CamelException *ex)
-{
- int len = strlen (type), i;
- char *resp;
-
- for (i = 0; i < response->untagged->len; i++) {
- resp = response->untagged->pdata[i];
- /* Skip "* ", and initial sequence number, if present */
- strtoul (resp + 2, &resp, 10);
- if (*resp == ' ')
- resp = imap_next_word (resp);
-
- if (!g_strncasecmp (resp, type, len))
- break;
- }
-
- if (i < response->untagged->len) {
- resp = response->untagged->pdata[i];
- g_ptr_array_remove_index (response->untagged, i);
- } else {
- resp = NULL;
- camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
- _("IMAP server response did not contain "
- "%s information"), type);
- }
-
- camel_imap_response_free (store, response);
- return resp;
-}
-
-/**
- * camel_imap_response_extract_continuation:
- * @store: the store the response came from
- * @response: the response data returned from camel_imap_command
- * @ex: a CamelException
- *
- * This checks that @response contains a continuation response, and
- * returns just that data. If @response doesn't contain a continuation
- * response, the function will set @ex, release @store's command_lock,
- * and return %NULL. Either way, @response will be freed.
- *
- * Return value: the desired response string, which the caller must free.
- **/
-char *
-camel_imap_response_extract_continuation (CamelImapStore *store,
- CamelImapResponse *response,
- CamelException *ex)
-{
- char *status;
-
- if (response->status && *response->status == '+') {
- status = response->status;
- response->status = NULL;
- camel_imap_response_free (store, response);
- return status;
- }
-
- camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
- _("Unexpected OK response from IMAP server: %s"),
- response->status);
- camel_imap_response_free (store, response);
- return NULL;
-}
-
-static char *
-imap_command_strdup_vprintf (CamelImapStore *store, const char *fmt,
- va_list ap)
-{
- GPtrArray *args;
- const char *p, *start;
- char *out, *op, *string;
- int num, len, i, arglen;
-
- args = g_ptr_array_new ();
-
- /* Determine the length of the data */
- len = strlen (fmt);
- p = start = fmt;
- while (*p) {
- p = strchr (start, '%');
- if (!p)
- break;
-
- switch (*++p) {
- case 'd':
- num = va_arg (ap, int);
- g_ptr_array_add (args, GINT_TO_POINTER (num));
- start = p + 1;
- len += 10;
- break;
-
- case 's':
- string = va_arg (ap, char *);
- g_ptr_array_add (args, string);
- start = p + 1;
- len += strlen (string);
- break;
-
- case 'S':
- case 'F':
- string = va_arg (ap, char *);
- arglen = strlen (string);
- if (*p == 'F') {
- if (store->namespace == NULL) {
- if (*string != '\0') /*ok if foldername is "" */
- g_warning ("trying to list folder \"%s\" but no namespace. Hope for the best", string);
- arglen += 2;
- } else
- arglen += strlen (store->namespace) + 1;
- }
- g_ptr_array_add (args, string);
- if (store->capabilities & IMAP_CAPABILITY_LITERALPLUS)
- len += arglen + 15;
- else
- len += arglen * 2;
- start = p + 1;
- break;
-
- case '%':
- start = p;
- break;
-
- default:
- g_warning ("camel-imap-command is not printf. I don't "
- "know what '%%%c' means.", *p);
- start = *p ? p + 1 : p;
- break;
- }
- }
-
- /* Now write out the string */
- op = out = g_malloc (len + 1);
- p = start = fmt;
- i = 0;
- while (*p) {
- p = strchr (start, '%');
- if (!p) {
- strcpy (op, start);
- break;
- } else {
- strncpy (op, start, p - start);
- op += p - start;
- }
-
- switch (*++p) {
- case 'd':
- num = GPOINTER_TO_INT (args->pdata[i++]);
- op += sprintf (op, "%d", num);
- break;
-
- case 's':
- string = args->pdata[i++];
- op += sprintf (op, "%s", string);
- break;
-
- case 'S':
- case 'F':
- string = args->pdata[i++];
- if (*p == 'F')
- string = imap_namespace_concat (store, string);
- if (store->capabilities & IMAP_CAPABILITY_LITERALPLUS) {
- op += sprintf (op, "{%d+}\r\n%s",
- strlen (string), string);
- } else {
- char *quoted = imap_quote_string (string);
-
- op += sprintf (op, "%s", quoted);
- g_free (quoted);
- }
- if (*p == 'F')
- g_free (string);
- break;
-
- default:
- *op++ = '%';
- *op++ = *p;
- }
-
- start = *p ? p + 1 : p;
- }
-
- return out;
-}
-
-static char *
-imap_command_strdup_printf (CamelImapStore *store, const char *fmt, ...)
-{
- va_list ap;
- char *result;
-
- va_start (ap, fmt);
- result = imap_command_strdup_vprintf (store, fmt, ap);
- va_end (ap);
-
- return result;
-}