diff options
Diffstat (limited to 'camel/providers/imap/camel-imap-command.c')
| -rw-r--r-- | camel/providers/imap/camel-imap-command.c | 740 |
1 files changed, 0 insertions, 740 deletions
diff --git a/camel/providers/imap/camel-imap-command.c b/camel/providers/imap/camel-imap-command.c deleted file mode 100644 index 428ecf565d..0000000000 --- a/camel/providers/imap/camel-imap-command.c +++ /dev/null @@ -1,740 +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 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., 59 Temple Street #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 %S", - 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) - * - * %S strings will be passed as literals if the server supports LITERAL+ - * and quoted strings otherwise. (%S does not support strings that - * contain newlines.) - * - * 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 NULL; - 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 - * @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, - CamelException *ex) -{ - if (camel_remote_store_send_string (CAMEL_REMOTE_STORE (store), ex, - "%s\r\n", cmd) < 0) { - 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 '*': - type = CAMEL_IMAP_RESPONSE_UNTAGGED; - - /* Read the rest of the response if it is multi-line. */ - respbuf = imap_read_untagged (store, respbuf, ex); - if (!respbuf) - type = CAMEL_IMAP_RESPONSE_ERROR; - else if (!g_strncasecmp (respbuf, "* BYE", 5)) { - /* Connection was lost, no more data to fetch */ - store->connected = FALSE; - g_free (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, strerror(errno)); - camel_service_disconnect (CAMEL_SERVICE (store), FALSE, NULL); - goto lose; - } - if (nread < length) { - camel_exception_setv (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; - - 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': - string = va_arg (ap, char *); - g_ptr_array_add (args, string); - if (store->capabilities & IMAP_CAPABILITY_LITERALPLUS) - len += strlen (string) + 15; - else - len += strlen (string) * 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': - string = args->pdata[i++]; - 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); - } - 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; -} |