diff options
Diffstat (limited to 'camel/providers/pop3/camel-pop3-store.c')
| -rw-r--r-- | camel/providers/pop3/camel-pop3-store.c | 681 |
1 files changed, 0 insertions, 681 deletions
diff --git a/camel/providers/pop3/camel-pop3-store.c b/camel/providers/pop3/camel-pop3-store.c deleted file mode 100644 index fac9cae931..0000000000 --- a/camel/providers/pop3/camel-pop3-store.c +++ /dev/null @@ -1,681 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* camel-pop3-store.c : class for a pop3 store */ - -/* - * Authors: - * Dan Winship <danw@helixcode.com> - * - * Copyright (C) 2000 Helix Code, Inc. (www.helixcode.com) - * - * 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 Place, Suite 330, Boston, MA 02111-1307 - * USA - */ - -#include "config.h" - -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> - -#include "camel-operation.h" - -#ifdef HAVE_KRB4 -/* Specified nowhere */ -#define KPOP_PORT 1109 - -#include <krb.h> -/* MIT krb4 des.h #defines _. Sigh. We don't need it. */ -#undef _ - -#ifdef NEED_KRB_SENDAUTH_PROTO -extern int krb_sendauth(long options, int fd, KTEXT ticket, char *service, - char *inst, char *realm, unsigned KRB4_32 checksum, - MSG_DAT *msg_data, CREDENTIALS *cred, - Key_schedule schedule, struct sockaddr_in *laddr, - struct sockaddr_in *faddr, char *version); -#endif -#endif - -#include "camel-pop3-store.h" -#include "camel-pop3-folder.h" -#include "camel-stream-buffer.h" -#include "camel-stream-fs.h" -#include "camel-session.h" -#include "camel-exception.h" -#include "camel-url.h" -#include "e-util/md5-utils.h" - -/* Specified in RFC 1939 */ -#define POP3_PORT 110 - -static CamelRemoteStoreClass *parent_class = NULL; - -static void finalize (CamelObject *object); - -static gboolean pop3_connect (CamelService *service, CamelException *ex); -static gboolean pop3_disconnect (CamelService *service, gboolean clean, CamelException *ex); -static GList *query_auth_types (CamelService *service, gboolean connect, CamelException *ex); - -static CamelFolder *get_folder (CamelStore *store, const char *folder_name, - guint32 flags, CamelException *ex); - -static int pop3_get_response (CamelPop3Store *store, char **ret, CamelException *ex); - - -static void -camel_pop3_store_class_init (CamelPop3StoreClass *camel_pop3_store_class) -{ - CamelServiceClass *camel_service_class = - CAMEL_SERVICE_CLASS (camel_pop3_store_class); - CamelStoreClass *camel_store_class = - CAMEL_STORE_CLASS (camel_pop3_store_class); - - parent_class = CAMEL_REMOTE_STORE_CLASS(camel_type_get_global_classfuncs - (camel_remote_store_get_type ())); - - /* virtual method overload */ - camel_service_class->query_auth_types = query_auth_types; - camel_service_class->connect = pop3_connect; - camel_service_class->disconnect = pop3_disconnect; - - camel_store_class->get_folder = get_folder; -} - - - -static void -camel_pop3_store_init (gpointer object, gpointer klass) -{ - CamelRemoteStore *remote_store = CAMEL_REMOTE_STORE (object); - - remote_store->default_port = 110; -} - -CamelType -camel_pop3_store_get_type (void) -{ - static CamelType camel_pop3_store_type = CAMEL_INVALID_TYPE; - - if (!camel_pop3_store_type) { - camel_pop3_store_type = camel_type_register (CAMEL_REMOTE_STORE_TYPE, "CamelPop3Store", - sizeof (CamelPop3Store), - sizeof (CamelPop3StoreClass), - (CamelObjectClassInitFunc) camel_pop3_store_class_init, - NULL, - (CamelObjectInitFunc) camel_pop3_store_init, - finalize); - } - - return camel_pop3_store_type; -} - -static void -finalize (CamelObject *object) -{ - CamelPop3Store *pop3_store = CAMEL_POP3_STORE (object); - - if (pop3_store->apop_timestamp) - g_free (pop3_store->apop_timestamp); -} - -static CamelServiceAuthType password_authtype = { - N_("Password"), - - N_("This option will connect to the POP server using a plaintext " - "password. This is the only option supported by many POP servers."), - - "", - TRUE -}; - -static CamelServiceAuthType apop_authtype = { - "APOP", - - N_("This option will connect to the POP server using an encrypted " - "password via the APOP protocol. This may not work for all users " - "even on servers that claim to support it."), - - "+APOP", - TRUE -}; - -#ifdef HAVE_KRB4 -static CamelServiceAuthType kpop_authtype = { - "Kerberos 4 (KPOP)", - - N_("This will connect to the POP server and use Kerberos 4 " - "to authenticate to it."), - - "+KPOP", - FALSE -}; -#endif - -static gboolean -connect_to_server (CamelService *service, /*gboolean real, */CamelException *ex) -{ - CamelPop3Store *store = CAMEL_POP3_STORE (service); - char *buf, *apoptime, *apopend; - gint status; -#ifdef HAVE_KRB4 - gboolean kpop = service->url->authmech && - !strcmp (service->url->authmech, "+KPOP"); -#endif - -#ifdef HAVE_KRB4 - if (kpop) { - KTEXT_ST ticket_st; - MSG_DAT msg_data; - CREDENTIALS cred; - Key_schedule schedule; - char *hostname; - struct hostent *h; - int fd; - - /* Need to copy hostname, because krb_realmofhost will - * call gethostbyname as well, and gethostbyname uses - * static storage. - */ - h = camel_service_gethost (service, ex); - hostname = g_strdup (h->h_name); - - fd = CAMEL_STREAM_FS (CAMEL_REMOTE_STORE (service)->ostream)->fd; - - status = krb_sendauth (0, fd, &ticket_st, "pop", hostname, - krb_realmofhost (hostname), 0, - &msg_data, &cred, schedule, - NULL, NULL, "KPOPV0.1"); - g_free (hostname); - if (status != KSUCCESS) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE, - _("Could not authenticate to " - "KPOP server: %s"), - krb_err_txt[status]); - return FALSE; - } - - if (!service->url->passwd) - service->url->passwd = g_strdup (service->url->user); - } -#endif /* HAVE_KRB4 */ - - /* Read the greeting, check status */ - status = pop3_get_response (store, &buf, ex); - if (status != CAMEL_POP3_OK) - return FALSE; - - if (buf) { - apoptime = strchr (buf, '<'); - apopend = apoptime ? strchr (apoptime, '>') : NULL; - if (apopend) { - store->apop_timestamp = - g_strndup (apoptime, apopend - apoptime + 1); - memmove (apoptime, apopend + 1, strlen (apopend + 1)); - } - store->implementation = buf; - } - - /* Check extensions */ - store->login_delay = -1; - store->supports_top = -1; - store->supports_uidl = -1; - store->expires = -1; - - status = camel_pop3_command (store, NULL, ex, "CAPA"); - if (status == CAMEL_POP3_OK) { - char *p; - int len; - - buf = camel_pop3_command_get_additional_data (store, 0, ex); - if (camel_exception_is_set (ex)) - return FALSE; - - p = buf; - while (*p) { - len = strcspn (p, "\n"); - if (!strncmp (p, "IMPLEMENTATION ", 15)) { - g_free (store->implementation); - store->implementation = - g_strndup (p + 15, len - 15); - } else if (len == 3 && !strncmp (p, "TOP", 3)) - store->supports_top = TRUE; - else if (len == 4 && !strncmp (p, "UIDL", 4)) - store->supports_uidl = TRUE; - else if (!strncmp (p, "LOGIN-DELAY ", 12)) - store->login_delay = atoi (p + 12); - else if (!strncmp (p, "EXPIRE NEVER", 12)) - store->expires = FALSE; - else if (!strncmp (p, "EXPIRE ", 7)) - store->expires = TRUE; - - p += len; - if (*p) - p++; - } - - g_free (buf); - } - - return TRUE; -} - -static GList * -query_auth_types (CamelService *service, gboolean connect, CamelException *ex) -{ - CamelPop3Store *store = CAMEL_POP3_STORE (service); - GList *types = NULL; - gboolean passwd = TRUE, apop = TRUE; -#ifdef HAVE_KRB4 - gboolean kpop = TRUE; - int saved_port; -#endif - - types = CAMEL_SERVICE_CLASS (parent_class)->query_auth_types (service, connect, ex); - - if (connect) { - passwd = camel_service_connect (service, ex); - /*ignore the exception here; the server may just not support passwd */ - - /* should we check apop too? */ - apop = store->apop_timestamp != NULL; - if (passwd) - camel_service_disconnect (service, TRUE, ex); - camel_exception_clear (ex); - -#ifdef HAVE_KRB4 - saved_port = service->url->port; - service->url->port = KPOP_PORT; - kpop = camel_service_connect (service, ex); - service->url->port = saved_port; - /*ignore the exception here; the server may just not support kpop */ - - if (kpop) - camel_service_disconnect (service, TRUE, ex); - camel_exception_clear (ex); -#endif - - if (passwd) - types = g_list_append (types, &password_authtype); - if (apop) - types = g_list_append (types, &apop_authtype); -#ifdef HAVE_KRB4 - if (kpop) - types = g_list_append (types, &kpop_authtype); -#endif - - if (!types) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE, - _("Could not connect to POP server on " - "%s."), service->url->host); - } - } else { - types = g_list_append (types, &password_authtype); - types = g_list_append (types, &apop_authtype); -#ifdef HAVE_KRB4 - types = g_list_append (types, &kpop_authtype); -#endif - } - - return types; -} - -/** - * camel_pop3_store_expunge: - * @store: the store - * @ex: a CamelException - * - * Expunge messages from the store. This will result in the connection - * being closed, which may cause later commands to fail if they can't - * reconnect. - **/ -void -camel_pop3_store_expunge (CamelPop3Store *store, CamelException *ex) -{ - camel_pop3_command (store, NULL, ex, "QUIT"); - camel_service_disconnect (CAMEL_SERVICE (store), FALSE, ex); -} - - -static gboolean -pop3_try_authenticate (CamelService *service, gboolean kpop, - const char *errmsg, CamelException *ex) -{ - CamelPop3Store *store = (CamelPop3Store *)service; - int status; - char *msg; - - /* The KPOP code will have set the password to be the username - * in connect_to_server. Password and APOP are the only other - * cases, and they both need a password. So if there's no - * password stored, query for it. - */ - if (!service->url->passwd) { - char *prompt; - - prompt = g_strdup_printf (_("%sPlease enter the POP3 password " - "for %s@%s"), errmsg ? errmsg : "", - service->url->user, - service->url->host); - service->url->passwd = camel_session_query_authenticator ( - camel_service_get_session (service), - CAMEL_AUTHENTICATOR_ASK, prompt, TRUE, - service, "password", ex); - g_free (prompt); - if (!service->url->passwd) - return FALSE; - } - - if (!service->url->authmech || kpop) { - status = camel_pop3_command (store, &msg, ex, "USER %s", - service->url->user); - switch (status) { - case CAMEL_POP3_ERR: - camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_CANT_AUTHENTICATE, - _("Unable to connect to POP " - "server.\nError sending " - "username: %s"), - msg ? msg : _("(Unknown)")); - g_free (msg); - /*fallll*/ - case CAMEL_POP3_FAIL: - return FALSE; - } - g_free (msg); - - status = camel_pop3_command (store, &msg, ex, "PASS %s", - service->url->passwd); - } else if (!strcmp (service->url->authmech, "+APOP") - && store->apop_timestamp) { - char *secret, md5asc[33], *d; - unsigned char md5sum[16], *s; - - secret = g_strdup_printf ("%s%s", store->apop_timestamp, - service->url->passwd); - md5_get_digest (secret, strlen (secret), md5sum); - g_free (secret); - - for (s = md5sum, d = md5asc; d < md5asc + 32; s++, d += 2) - sprintf (d, "%.2x", *s); - - status = camel_pop3_command (store, &msg, ex, "APOP %s %s", - service->url->user, md5asc); - } else { - camel_exception_set (ex, CAMEL_EXCEPTION_SERVICE_CANT_AUTHENTICATE, - _("Unable to connect to POP server.\n" - "No support for requested " - "authentication mechanism.")); - return FALSE; - } - - if (status == CAMEL_POP3_ERR) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_CANT_AUTHENTICATE, - _("Unable to connect to POP server.\n" - "Error sending password: %s"), - msg ? msg : _("(Unknown)")); - } - - g_free (msg); - return status == CAMEL_POP3_ERR; -} - -static gboolean -pop3_connect (CamelService *service, CamelException *ex) -{ - char *errbuf = NULL; - gboolean tryagain, kpop = FALSE; - gboolean res; - -#ifdef HAVE_KRB4 - gboolean set_port = FALSE; - - kpop = (service->url->authmech && - !strcmp (service->url->authmech, "+KPOP")); - - if (kpop && service->url->port == 0) { - set_port = TRUE; - service->url->port = KPOP_PORT; - } -#endif - - res = CAMEL_SERVICE_CLASS (parent_class)->connect (service, ex); - -#ifdef HAVE_KRB4 - /* This is veeery nasty. When we set the port, we're changing the - * hash value of our URL. service_cache_remove() gets called when - * we're done checking the mail, but the hash table lookup fails - * because the url port has changed. Then, a finalized instance of - * the CamelService is stuck in the hash table, and the next time - * we try to look up the service, with a URL of port 0, we look - * up the freed service and a segfault results. - */ - - if (kpop && set_port) - service->url->port = 0; -#endif - - if (res == FALSE) - return FALSE; - - /*FIXME integrate these functions */ - if (!connect_to_server (service, ex)) - return FALSE; - - camel_exception_clear (ex); - do { - if (camel_exception_is_set (ex)) { - errbuf = g_strdup_printf ( - "%s\n\n", - camel_exception_get_description (ex)); - camel_exception_clear (ex); - - /* Uncache the password before prompting again. */ - camel_session_query_authenticator ( - camel_service_get_session (service), - CAMEL_AUTHENTICATOR_TELL, NULL, TRUE, service, - "password", ex); - g_free (service->url->passwd); - service->url->passwd = NULL; - } - - tryagain = pop3_try_authenticate (service, kpop, errbuf, ex); - g_free (errbuf); - } while (tryagain); - - if (camel_exception_is_set (ex)) { - camel_service_disconnect (service, TRUE, ex); - return FALSE; - } - - return TRUE; -} - -static gboolean -pop3_disconnect (CamelService *service, gboolean clean, CamelException *ex) -{ - CamelPop3Store *store = CAMEL_POP3_STORE (service); - - if (clean) - camel_pop3_command (store, NULL, ex, "QUIT"); - - if (!CAMEL_SERVICE_CLASS (parent_class)->disconnect (service, clean, ex)) - return FALSE; - - return TRUE; -} - -static CamelFolder * -get_folder (CamelStore *store, const char *folder_name, - guint32 flags, CamelException *ex) -{ - if (g_strcasecmp (folder_name, "inbox") != 0) { - camel_exception_setv (ex, CAMEL_EXCEPTION_FOLDER_INVALID, - _("No such folder `%s'."), folder_name); - return NULL; - } - return camel_pop3_folder_new (store, ex); -} - - -/** - * camel_pop3_command: Send a command to a POP3 server. - * @store: the POP3 store - * @ret: a pointer to return the full server response in - * @fmt: a printf-style format string, followed by arguments - * - * This command sends the command specified by @fmt and the following - * arguments to the connected POP3 store specified by @store. It then - * reads the server's response and parses out the status code. If - * the caller passed a non-NULL pointer for @ret, camel_pop3_command - * will set it to point to an buffer containing the rest of the - * response from the POP3 server. (If @ret was passed but there was - * no extended response, @ret will be set to NULL.) The caller must - * free this buffer when it is done with it. - * - * Return value: one of CAMEL_POP3_OK (command executed successfully), - * CAMEL_POP3_ERR (command encounted an error), or CAMEL_POP3_FAIL - * (a protocol-level error occurred, and Camel is uncertain of the - * result of the command.) - **/ -int -camel_pop3_command (CamelPop3Store *store, char **ret, CamelException *ex, char *fmt, ...) -{ - char *cmdbuf; - va_list ap; - - va_start (ap, fmt); - cmdbuf = g_strdup_vprintf (fmt, ap); - va_end (ap); - - /* Send the command */ - if (camel_remote_store_send_string (CAMEL_REMOTE_STORE (store), ex, "%s\r\n", cmdbuf) < 0) { - g_free (cmdbuf); - if (ret) - *ret = NULL; - return CAMEL_POP3_FAIL; - } - g_free (cmdbuf); - - return pop3_get_response (store, ret, ex); -} - -static int -pop3_get_response (CamelPop3Store *store, char **ret, CamelException *ex) -{ - char *respbuf; - int status; - - if (camel_remote_store_recv_line (CAMEL_REMOTE_STORE (store), &respbuf, ex) < 0) { - if (ret) - *ret = NULL; - return CAMEL_POP3_FAIL; - } - - if (!strncmp (respbuf, "+OK", 3)) - status = CAMEL_POP3_OK; - else if (!strncmp (respbuf, "-ERR", 4)) - status = CAMEL_POP3_ERR; - else - status = CAMEL_POP3_FAIL; - - if (ret) { - if (status != CAMEL_POP3_FAIL) { - *ret = strchr (respbuf, ' '); - if (*ret) - *ret = g_strdup (*ret + 1); - } else - *ret = NULL; - } - g_free (respbuf); - - return status; -} - -/** - * camel_pop3_command_get_additional_data: get "additional data" from - * a POP3 command. - * @store: the POP3 store - * @total: Total bytes expected (for progress reporting), use 0 for 'unknown'. - * - * This command gets the additional data returned by "multi-line" POP - * commands, such as LIST, RETR, TOP, and UIDL. This command _must_ - * be called after a successful (CAMEL_POP3_OK) call to - * camel_pop3_command for a command that has a multi-line response. - * The returned data is un-byte-stuffed, and has lines termined by - * newlines rather than CR/LF pairs. - * - * Return value: the data, which the caller must free. - **/ -char * -camel_pop3_command_get_additional_data (CamelPop3Store *store, int total, CamelException *ex) -{ - GPtrArray *data; - char *buf, *p; - int i, len = 0, status = CAMEL_POP3_OK; - int pc = 0; - - data = g_ptr_array_new (); - while (1) { - if (camel_remote_store_recv_line (CAMEL_REMOTE_STORE (store), &buf, ex) < 0) { - status = CAMEL_POP3_FAIL; - break; - } - - if (!strcmp (buf, ".")) - break; - - g_ptr_array_add (data, buf); - len += strlen (buf) + 1; - - if (total) { - pc = (len+1) * 100 / total; - camel_operation_progress(NULL, pc); - } else { - camel_operation_progress_count(NULL, len); - } - } - - if (buf) - g_free (buf); - - if (status == CAMEL_POP3_OK) { - buf = g_malloc0 (len + 1); - - for (i = 0, p = buf; i < data->len; i++) { - char *ptr, *datap; - - datap = (char *) data->pdata[i]; - ptr = (*datap == '.') ? datap + 1 : datap; - len = strlen (ptr); - memcpy (p, ptr, len); - p += len; - *p++ = '\n'; - } - *p = '\0'; - } else - buf = NULL; - - for (i = 0; i < data->len; i++) - g_free (data->pdata[i]); - g_ptr_array_free (data, TRUE); - - return buf; -} - |