+++ /dev/null
-/*
- * Copyright notice from original mutt:
- * Copyright (C) 2000-2003 Vsevolod Volkov <vvv@mutt.org.ua>
- *
- * This file is part of mutt-ng, see http://www.muttng.org/.
- * It's licensed under the GNU General Public License,
- * please see the file GPL in the top level source directory.
- */
-
-#if HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include "mutt.h"
-#include "mx.h"
-#include "url.h"
-#include "pop.h"
-#ifdef USE_SSL
-# include "mutt_ssl.h"
-#endif
-
-#include <string.h>
-#include <unistd.h>
-#include <ctype.h>
-
-/* given an POP mailbox name, return host, port, username and password */
-int pop_parse_path (const char *path, ACCOUNT * acct)
-{
- ciss_url_t url;
- char *c;
- int ret = -1;
-
- /* Defaults */
- acct->flags = 0;
- acct->port = POP_PORT;
- acct->type = M_ACCT_TYPE_POP;
-
- c = safe_strdup (path);
- url_parse_ciss (&url, c);
-
- if (url.scheme == U_POP || url.scheme == U_POPS) {
- if (url.scheme == U_POPS) {
- acct->flags |= M_ACCT_SSL;
- acct->port = POP_SSL_PORT;
- }
-
- if ((!url.path || !*url.path) && mutt_account_fromurl (acct, &url) == 0)
- ret = 0;
- }
-
- FREE (&c);
- return ret;
-}
-
-/* Copy error message to err_msg buffer */
-void pop_error (POP_DATA * pop_data, char *msg)
-{
- char *t, *c, *c2;
-
- t = strchr (pop_data->err_msg, '\0');
- c = msg;
-
- if (!mutt_strncmp (msg, "-ERR ", 5)) {
- c2 = msg + 5;
- SKIPWS (c2);
-
- if (*c2)
- c = c2;
- }
-
- strfcpy (t, c, sizeof (pop_data->err_msg) - mutt_strlen (pop_data->err_msg));
- mutt_remove_trailing_ws (pop_data->err_msg);
-}
-
-/* Parse CAPA output */
-static int fetch_capa (char *line, void *data)
-{
- POP_DATA *pop_data = (POP_DATA *) data;
- char *c;
-
- if (!ascii_strncasecmp (line, "SASL", 4)) {
- FREE (&pop_data->auth_list);
- c = line + 4;
- SKIPWS (c);
- pop_data->auth_list = safe_strdup (c);
- }
-
- else if (!ascii_strncasecmp (line, "STLS", 4))
- pop_data->cmd_stls = 1;
-
- else if (!ascii_strncasecmp (line, "USER", 4))
- pop_data->cmd_user = 1;
-
- else if (!ascii_strncasecmp (line, "UIDL", 4))
- pop_data->cmd_uidl = 1;
-
- else if (!ascii_strncasecmp (line, "TOP", 3))
- pop_data->cmd_top = 1;
-
- return 0;
-}
-
-/* Fetch list of the authentication mechanisms */
-static int fetch_auth (char *line, void *data)
-{
- POP_DATA *pop_data = (POP_DATA *) data;
-
- if (!pop_data->auth_list) {
- pop_data->auth_list = safe_malloc (mutt_strlen (line) + 1);
- *pop_data->auth_list = '\0';
- }
- else {
- safe_realloc (&pop_data->auth_list,
- mutt_strlen (pop_data->auth_list) + mutt_strlen (line) + 2);
- strcat (pop_data->auth_list, " "); /* __STRCAT_CHECKED__ */
- }
- strcat (pop_data->auth_list, line); /* __STRCAT_CHECKED__ */
-
- return 0;
-}
-
-/*
- * Get capabilities
- * 0 - successful,
- * -1 - conection lost,
- * -2 - execution error.
-*/
-static int pop_capabilities (POP_DATA * pop_data, int mode)
-{
- char buf[LONG_STRING];
-
- /* don't check capabilities on reconnect */
- if (pop_data->capabilities)
- return 0;
-
- /* init capabilities */
- if (mode == 0) {
- pop_data->cmd_capa = 0;
- pop_data->cmd_stls = 0;
- pop_data->cmd_user = 0;
- pop_data->cmd_uidl = 0;
- pop_data->cmd_top = 0;
- pop_data->resp_codes = 0;
- pop_data->expire = 1;
- pop_data->login_delay = 0;
- FREE (&pop_data->auth_list);
- }
-
- /* Execute CAPA command */
- if (mode == 0 || pop_data->cmd_capa) {
- strfcpy (buf, "CAPA\r\n", sizeof (buf));
- switch (pop_fetch_data (pop_data, buf, NULL, fetch_capa, pop_data)) {
- case 0:
- {
- pop_data->cmd_capa = 1;
- break;
- }
- case -1:
- return -1;
- }
- }
-
- /* CAPA not supported, use defaults */
- if (mode == 0 && !pop_data->cmd_capa) {
- pop_data->cmd_user = 2;
- pop_data->cmd_uidl = 2;
- pop_data->cmd_top = 2;
-
- strfcpy (buf, "AUTH\r\n", sizeof (buf));
- if (pop_fetch_data (pop_data, buf, NULL, fetch_auth, pop_data) == -1)
- return -1;
- }
-
- /* Check capabilities */
- if (mode == 2) {
- char *msg = NULL;
-
- if (!pop_data->expire)
- msg = _("Unable to leave messages on server.");
- if (!pop_data->cmd_top)
- msg = _("Command TOP is not supported by server.");
- if (!pop_data->cmd_uidl)
- msg = _("Command UIDL is not supported by server.");
- if (msg && pop_data->cmd_capa) {
- mutt_error (msg);
- return -2;
- }
- pop_data->capabilities = 1;
- }
-
- return 0;
-}
-
-/*
- * Open connection
- * 0 - successful,
- * -1 - conection lost,
- * -2 - invalid response.
-*/
-int pop_connect (POP_DATA * pop_data)
-{
- char buf[LONG_STRING];
-
- pop_data->status = POP_NONE;
- if (mutt_socket_open (pop_data->conn) < 0 ||
- mutt_socket_readln (buf, sizeof (buf), pop_data->conn) < 0) {
- mutt_error (_("Error connecting to server: %s"),
- pop_data->conn->account.host);
- return -1;
- }
-
- pop_data->status = POP_CONNECTED;
-
- if (mutt_strncmp (buf, "+OK", 3)) {
- *pop_data->err_msg = '\0';
- pop_error (pop_data, buf);
- mutt_error ("%s", pop_data->err_msg);
- return -2;
- }
-
- pop_apop_timestamp (pop_data, buf);
-
- return 0;
-}
-
-/*
- * Open connection and authenticate
- * 0 - successful,
- * -1 - conection lost,
- * -2 - invalid command or execution error,
- * -3 - authentication canceled.
-*/
-int pop_open_connection (POP_DATA * pop_data)
-{
- int ret;
- unsigned int n, size;
- char buf[LONG_STRING];
-
- ret = pop_connect (pop_data);
- if (ret < 0) {
- mutt_sleep (2);
- return ret;
- }
-
- ret = pop_capabilities (pop_data, 0);
- if (ret == -1)
- goto err_conn;
- if (ret == -2) {
- mutt_sleep (2);
- return -2;
- }
-
-#if (defined(USE_SSL) || defined(USE_GNUTLS)) && !defined(USE_NSS)
- /* Attempt STLS if available and desired. */
- if (pop_data->cmd_stls && !pop_data->conn->ssf) {
- if (pop_data->use_stls == 0) {
- ret = query_quadoption (OPT_SSLSTARTTLS,
- _("Secure connection with TLS?"));
- if (ret == -1)
- return -2;
- pop_data->use_stls = 1;
- if (ret == M_YES)
- pop_data->use_stls = 2;
- }
- if (pop_data->use_stls == 2) {
- strfcpy (buf, "STLS\r\n", sizeof (buf));
- ret = pop_query (pop_data, buf, sizeof (buf));
- if (ret == -1)
- goto err_conn;
- if (ret != 0) {
- mutt_error ("%s", pop_data->err_msg);
- mutt_sleep (2);
- }
-#ifdef USE_SSL
- else if (mutt_ssl_starttls (pop_data->conn))
-#elif USE_GNUTLS
- else if (mutt_gnutls_starttls (pop_data->conn))
-#endif
- {
- mutt_error (_("Could not negotiate TLS connection"));
- mutt_sleep (2);
- return -2;
- }
- else {
- /* recheck capabilities after STLS completes */
- ret = pop_capabilities (pop_data, 1);
- if (ret == -1)
- goto err_conn;
- if (ret == -2) {
- mutt_sleep (2);
- return -2;
- }
- }
- }
- }
-#endif
-
- ret = pop_authenticate (pop_data);
- if (ret == -1)
- goto err_conn;
- if (ret == -3)
- mutt_clear_error ();
- if (ret != 0)
- return ret;
-
- /* recheck capabilities after authentication */
- ret = pop_capabilities (pop_data, 2);
- if (ret == -1)
- goto err_conn;
- if (ret == -2) {
- mutt_sleep (2);
- return -2;
- }
-
- /* get total size of mailbox */
- strfcpy (buf, "STAT\r\n", sizeof (buf));
- ret = pop_query (pop_data, buf, sizeof (buf));
- if (ret == -1)
- goto err_conn;
- if (ret == -2) {
- mutt_error ("%s", pop_data->err_msg);
- mutt_sleep (2);
- return ret;
- }
-
- sscanf (buf, "+OK %u %u", &n, &size);
- pop_data->size = size;
- return 0;
-
-err_conn:
- pop_data->status = POP_DISCONNECTED;
- mutt_error _("Server closed connection!");
-
- mutt_sleep (2);
- return -1;
-}
-
-/* logout from POP server */
-void pop_logout (CONTEXT * ctx)
-{
- int ret = 0;
- char buf[LONG_STRING];
- POP_DATA *pop_data = (POP_DATA *) ctx->data;
-
- if (pop_data->status == POP_CONNECTED) {
- mutt_message _("Closing connection to POP server...");
-
- if (ctx->readonly) {
- strfcpy (buf, "RSET\r\n", sizeof (buf));
- ret = pop_query (pop_data, buf, sizeof (buf));
- }
-
- if (ret != -1) {
- strfcpy (buf, "QUIT\r\n", sizeof (buf));
- pop_query (pop_data, buf, sizeof (buf));
- }
-
- mutt_clear_error ();
- }
-
- pop_data->status = POP_DISCONNECTED;
- return;
-}
-
-/*
- * Send data from buffer and receive answer to the same buffer
- * 0 - successful,
- * -1 - conection lost,
- * -2 - invalid command or execution error.
-*/
-int pop_query_d (POP_DATA * pop_data, char *buf, size_t buflen, char *msg)
-{
- int dbg = M_SOCK_LOG_CMD;
- char *c;
-
- if (pop_data->status != POP_CONNECTED)
- return -1;
-
-#ifdef DEBUG
- /* print msg instaed of real command */
- if (msg) {
- dbg = M_SOCK_LOG_FULL;
- dprint (M_SOCK_LOG_CMD, (debugfile, "> %s", msg));
- }
-#endif
-
- mutt_socket_write_d (pop_data->conn, buf, dbg);
-
- c = strpbrk (buf, " \r\n");
- *c = '\0';
- snprintf (pop_data->err_msg, sizeof (pop_data->err_msg), "%s: ", buf);
-
- if (mutt_socket_readln (buf, buflen, pop_data->conn) < 0) {
- pop_data->status = POP_DISCONNECTED;
- return -1;
- }
- if (!mutt_strncmp (buf, "+OK", 3))
- return 0;
-
- pop_error (pop_data, buf);
- return -2;
-}
-
-/*
- * This function calls funct(*line, *data) for each received line,
- * funct(NULL, *data) if rewind(*data) needs, exits when fail or done.
- * Returned codes:
- * 0 - successful,
- * -1 - conection lost,
- * -2 - invalid command or execution error,
- * -3 - error in funct(*line, *data)
- */
-int pop_fetch_data (POP_DATA * pop_data, char *query, char *msg,
- int (*funct) (char *, void *), void *data)
-{
- char buf[LONG_STRING];
- char *inbuf;
- char *p;
- int ret, chunk, line = 0;
- size_t lenbuf = 0;
-
- strfcpy (buf, query, sizeof (buf));
- ret = pop_query (pop_data, buf, sizeof (buf));
- if (ret < 0)
- return ret;
-
- inbuf = safe_malloc (sizeof (buf));
-
- FOREVER {
- chunk =
- mutt_socket_readln_d (buf, sizeof (buf), pop_data->conn,
- M_SOCK_LOG_HDR);
- if (chunk < 0) {
- pop_data->status = POP_DISCONNECTED;
- ret = -1;
- break;
- }
-
- p = buf;
- if (!lenbuf && buf[0] == '.') {
- if (buf[1] != '.')
- break;
- p++;
- }
-
- strfcpy (inbuf + lenbuf, p, sizeof (buf));
-
- if (chunk >= sizeof (buf)) {
- lenbuf += mutt_strlen (p);
- }
- else {
- line++;
- if (msg && ReadInc && (line % ReadInc == 0))
- mutt_message ("%s %d", msg, line);
- if (ret == 0 && funct (inbuf, data) < 0)
- ret = -3;
- lenbuf = 0;
- }
-
- safe_realloc (&inbuf, lenbuf + sizeof (buf));
- }
-
- FREE (&inbuf);
- return ret;
-}
-
-/* find message with this UIDL and set refno */
-static int check_uidl (char *line, void *data)
-{
- int i;
- unsigned int index;
- CONTEXT *ctx = (CONTEXT *) data;
-
- sscanf (line, "%u %s", &index, line);
- for (i = 0; i < ctx->msgcount; i++) {
- if (!mutt_strcmp (ctx->hdrs[i]->data, line)) {
- ctx->hdrs[i]->refno = index;
- break;
- }
- }
-
- return 0;
-}
-
-/* reconnect and verify idnexes if connection was lost */
-int pop_reconnect (CONTEXT * ctx)
-{
- int ret;
- POP_DATA *pop_data = (POP_DATA *) ctx->data;
-
- if (pop_data->status == POP_CONNECTED)
- return 0;
- if (pop_data->status == POP_BYE)
- return -1;
-
- FOREVER {
- mutt_socket_close (pop_data->conn);
-
- ret = pop_open_connection (pop_data);
- if (ret == 0) {
- char *msg = _("Verifying message indexes...");
- int i;
-
- for (i = 0; i < ctx->msgcount; i++)
- ctx->hdrs[i]->refno = -1;
-
- mutt_message (msg);
-
- ret = pop_fetch_data (pop_data, "UIDL\r\n", msg, check_uidl, ctx);
- if (ret == -2) {
- mutt_error ("%s", pop_data->err_msg);
- mutt_sleep (2);
- }
- }
- if (ret == 0)
- return 0;
-
- pop_logout (ctx);
-
- if (ret < -1)
- return -1;
-
- if (query_quadoption (OPT_POPRECONNECT,
- _("Connection lost. Reconnect to POP server?")) !=
- M_YES)
- return -1;
- }
-}
projects / apps / madmutt.git / blobdiff