+++ /dev/null
-/*
- * Copyright notice from original mutt:
- * Copyright (C) 1998 Michael R. Elkins <me@mutt.org>
- * Copyright (C) 1999-2005 Brendan Cully <brendan@kublai.com>
- * Copyright (C) 1999-2000 Tommi Komulainen <Tommi.Komulainen@iki.fi>
- *
- * 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 <lib-lib/mem.h>
-#include <lib-lib/str.h>
-#include <lib-lib/macros.h>
-#include <lib-lib/debug.h>
-
-#include "mutt.h"
-#include "globals.h"
-#include "mutt_socket.h"
-#include "mutt_tunnel.h"
-#if defined(USE_SSL) || defined(USE_GNUTLS)
-# include "mutt_ssl.h"
-#endif
-
-#include "mutt_idna.h"
-
-
-#include <unistd.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <string.h>
-#include <errno.h>
-
-/* support for multiple socket connections */
-static CONNECTION *Connections = NULL;
-
-/* forward declarations */
-static int socket_preconnect (void);
-static int socket_connect (int fd, struct sockaddr *sa);
-static CONNECTION *socket_new_conn (void);
-
-/* Wrappers */
-int mutt_socket_open (CONNECTION * conn)
-{
- if (socket_preconnect ())
- return -1;
-
- return conn->conn_open (conn);
-}
-
-int mutt_socket_close (CONNECTION * conn)
-{
- int rc = -1;
-
- if (conn->fd < 0)
- debug_print (1, ("Attempt to close closed connection.\n"));
- else
- rc = conn->conn_close (conn);
-
- conn->fd = -1;
- conn->ssf = 0;
-
- return rc;
-}
-
-int mutt_socket_read (CONNECTION * conn, char *buf, size_t len)
-{
- int rc;
-
- if (conn->fd < 0) {
- debug_print (1, ("attempt to read from closed connection\n"));
- return -1;
- }
-
- rc = conn->conn_read (conn, buf, len);
- /* EOF */
- if (rc == 0) {
- mutt_error (_("Connection to %s closed"), conn->account.host);
- mutt_sleep (2);
- }
- if (rc <= 0)
- mutt_socket_close (conn);
-
- return rc;
-}
-
-int mutt_socket_write_d (CONNECTION * conn, const char *buf, int dbg)
-{
- int rc;
- int len;
-
- debug_print (dbg, ("> %s", buf));
-
- if (conn->fd < 0) {
- debug_print (1, ("attempt to write to closed connection\n"));
- return -1;
- }
-
- len = m_strlen(buf);
- if ((rc = conn->conn_write (conn, buf, len)) < 0) {
- debug_print (1, ("error writing, closing socket\n"));
- mutt_socket_close (conn);
-
- return -1;
- }
-
- if (rc < len) {
- debug_print (1, ("ERROR: wrote %d of %d bytes!\n", rc, len));
- }
-
- return rc;
-}
-
-/* simple read buffering to speed things up. */
-int mutt_socket_readchar (CONNECTION * conn, char *c)
-{
- if (conn->bufpos >= conn->available) {
- if (conn->fd >= 0)
- conn->available =
- conn->conn_read (conn, conn->inbuf, sizeof (conn->inbuf));
- else {
- debug_print (1, ("attempt to read from closed connection.\n"));
- return -1;
- }
- conn->bufpos = 0;
- if (conn->available == 0) {
- mutt_error (_("Connection to %s closed"), conn->account.host);
- mutt_sleep (2);
- }
- if (conn->available <= 0) {
- mutt_socket_close (conn);
- return -1;
- }
- }
- *c = conn->inbuf[conn->bufpos];
- conn->bufpos++;
- return 1;
-}
-
-int mutt_socket_readln_d (char *buf, ssize_t buflen, CONNECTION * conn,
- int dbg)
-{
- char ch;
- ssize_t i;
-
- for (i = 0; i < buflen - 1; i++) {
- if (mutt_socket_readchar (conn, &ch) != 1) {
- buf[i] = '\0';
- return -1;
- }
-
- if (ch == '\n')
- break;
- buf[i] = ch;
- }
-
- /* strip \r from \r\n termination */
- if (i && buf[i - 1] == '\r')
- buf[--i] = '\0';
- else
- buf[i] = '\0';
-
- debug_print (dbg, ("< %s\n", buf));
-
- /* number of bytes read, not m_strlen*/
- return i + 1;
-}
-
-CONNECTION *mutt_socket_head (void)
-{
- return Connections;
-}
-
-/* mutt_socket_free: remove connection from connection list and free it */
-void mutt_socket_free (CONNECTION * conn)
-{
- CONNECTION *iter;
- CONNECTION *tmp;
-
- iter = Connections;
-
- /* head is special case, doesn't need prev updated */
- if (iter == conn) {
- Connections = iter->next;
- p_delete(&iter);
- return;
- }
-
- while (iter->next) {
- if (iter->next == conn) {
- tmp = iter->next;
- iter->next = tmp->next;
- p_delete(&tmp);
- return;
- }
- iter = iter->next;
- }
-}
-
-/* mutt_conn_find: find a connection off the list of connections whose
- * account matches account. If start is not null, only search for
- * connections after the given connection (allows higher level socket code
- * to make more fine-grained searches than account info - eg in IMAP we may
- * wish to find a connection which is not in IMAP_SELECTED state) */
-CONNECTION *mutt_conn_find (const CONNECTION * start, const ACCOUNT * account)
-{
- CONNECTION *conn;
- ciss_url_t url;
- char hook[LONG_STRING];
-
- /* account isn't actually modified, since url isn't either */
- mutt_account_tourl ((ACCOUNT *) account, &url);
- url.path = NULL;
- url_ciss_tostring (&url, hook, sizeof (hook), 0);
- mutt_account_hook (hook);
-
- conn = start ? start->next : Connections;
- while (conn) {
- if (mutt_account_match (account, &(conn->account)))
- return conn;
- conn = conn->next;
- }
-
- conn = socket_new_conn ();
- memcpy (&conn->account, account, sizeof (ACCOUNT));
-
- conn->next = Connections;
- Connections = conn;
-
- if (Tunnel && *Tunnel)
- mutt_tunnel_socket_setup (conn);
- else if (account->flags & M_ACCT_SSL) {
-#if defined (USE_SSL) || defined (USE_GNUTLS)
- if (mutt_ssl_socket_setup (conn) < 0) {
- mutt_socket_free (conn);
- return NULL;
- }
-#else
- mutt_error _("SSL is unavailable.");
-
- mutt_sleep (2);
- mutt_socket_free (conn);
-
- return NULL;
-#endif
- }
- else {
- conn->conn_read = raw_socket_read;
- conn->conn_write = raw_socket_write;
- conn->conn_open = raw_socket_open;
- conn->conn_close = raw_socket_close;
- }
-
- return conn;
-}
-
-static int socket_preconnect (void)
-{
- int rc;
- int save_errno;
-
- if (m_strlen(Preconnect)) {
- debug_print (2, ("Executing preconnect: %s\n", Preconnect));
- rc = mutt_system (Preconnect);
- debug_print (2, ("Preconnect result: %d\n", rc));
- if (rc) {
- save_errno = errno;
- mutt_perror (_("Preconnect command failed."));
- mutt_sleep (1);
-
- return save_errno;
- }
- }
-
- return 0;
-}
-
-/* socket_connect: set up to connect to a socket fd. */
-static int socket_connect (int fd, struct sockaddr *sa)
-{
- int sa_size;
- int save_errno;
-
- if (sa->sa_family == AF_INET)
- sa_size = sizeof (struct sockaddr_in);
-#ifdef HAVE_GETADDRINFO
- else if (sa->sa_family == AF_INET6)
- sa_size = sizeof (struct sockaddr_in6);
-#endif
- else {
- debug_print (1, ("Unknown address family!\n"));
- return -1;
- }
-
- if (ConnectTimeout > 0)
- alarm (ConnectTimeout);
-
- mutt_allow_interrupt (1);
-
- save_errno = 0;
-
- if (connect (fd, sa, sa_size) < 0) {
- save_errno = errno;
- debug_print (2, ("Connection failed. errno: %d...\n", errno));
- SigInt = 0; /* reset in case we caught SIGINTR while in connect() */
- }
-
- if (ConnectTimeout > 0)
- alarm (0);
- mutt_allow_interrupt (0);
-
- return save_errno;
-}
-
-/* socket_new_conn: allocate and initialise a new connection. */
-static CONNECTION *socket_new_conn (void)
-{
- CONNECTION *conn;
-
- conn = p_new(CONNECTION, 1);
- conn->fd = -1;
-
- return conn;
-}
-
-int raw_socket_close (CONNECTION * conn)
-{
- return close (conn->fd);
-}
-
-int raw_socket_read (CONNECTION * conn, char *buf, size_t len)
-{
- int rc;
-
- if ((rc = read (conn->fd, buf, len)) == -1) {
- mutt_error (_("Error talking to %s (%s)"), conn->account.host,
- strerror (errno));
- mutt_sleep (2);
- }
-
- return rc;
-}
-
-int raw_socket_write (CONNECTION * conn, const char *buf, size_t count)
-{
- int rc;
-
- if ((rc = write (conn->fd, buf, count)) == -1) {
- mutt_error (_("Error talking to %s (%s)"), conn->account.host,
- strerror (errno));
- mutt_sleep (2);
- }
-
- return rc;
-}
-
-int raw_socket_open (CONNECTION * conn)
-{
- int rc;
- int fd;
-
- char *host_idna = NULL;
-
-#ifdef HAVE_GETADDRINFO
-/* --- IPv4/6 --- */
-
- /* "65536\0" */
- char port[6];
- struct addrinfo hints;
- struct addrinfo *res;
- struct addrinfo *cur;
-
- /* we accept v4 or v6 STREAM sockets */
- p_clear(&hints, 1);
-
- if (option (OPTUSEIPV6))
- hints.ai_family = AF_UNSPEC;
- else
- hints.ai_family = AF_INET;
-
- hints.ai_socktype = SOCK_STREAM;
-
- snprintf (port, sizeof (port), "%d", conn->account.port);
-
-# ifdef HAVE_LIBIDN
- if (idna_to_ascii_lz (conn->account.host, &host_idna, 1) != IDNA_SUCCESS) {
- mutt_error (_("Bad IDN \"%s\"."), conn->account.host);
- return -1;
- }
-# else
- host_idna = conn->account.host;
-# endif
-
- mutt_message (_("Looking up %s..."), conn->account.host);
-
-
- rc = getaddrinfo (host_idna, port, &hints, &res);
-
-# ifdef HAVE_LIBIDN
- p_delete(&host_idna);
-# endif
-
- if (rc) {
- mutt_error (_("Could not find the host \"%s\""), conn->account.host);
- mutt_sleep (2);
- return -1;
- }
-
- mutt_message (_("Connecting to %s..."), conn->account.host);
-
- rc = -1;
- for (cur = res; cur != NULL; cur = cur->ai_next) {
- fd = socket (cur->ai_family, cur->ai_socktype, cur->ai_protocol);
- if (fd >= 0) {
- if ((rc = socket_connect (fd, cur->ai_addr)) == 0) {
- fcntl (fd, F_SETFD, FD_CLOEXEC);
- conn->fd = fd;
- break;
- }
- else
- close (fd);
- }
- }
-
- freeaddrinfo (res);
-
-#else
- /* --- IPv4 only --- */
-
- struct sockaddr_in sin;
- struct hostent *he;
- int i;
-
- p_clear(&sin, 1);
- sin.sin_port = htons (conn->account.port);
- sin.sin_family = AF_INET;
-
-# ifdef HAVE_LIBIDN
- if (idna_to_ascii_lz (conn->account.host, &host_idna, 1) != IDNA_SUCCESS) {
- mutt_error (_("Bad IDN \"%s\"."), conn->account.host);
- return -1;
- }
-# else
- host_idna = conn->account.host;
-# endif
-
- mutt_message (_("Looking up %s..."), conn->account.host);
-
- if ((he = gethostbyname (host_idna)) == NULL) {
-# ifdef HAVE_LIBIDN
- p_delete(&host_idna);
-# endif
- mutt_error (_("Could not find the host \"%s\""), conn->account.host);
-
- return -1;
- }
-
-# ifdef HAVE_LIBIDN
- p_delete(&host_idna);
-# endif
-
- mutt_message (_("Connecting to %s..."), conn->account.host);
-
- rc = -1;
- for (i = 0; he->h_addr_list[i] != NULL; i++) {
- memcpy (&sin.sin_addr, he->h_addr_list[i], he->h_length);
- fd = socket (PF_INET, SOCK_STREAM, IPPROTO_IP);
-
- if (fd >= 0) {
- if ((rc = socket_connect (fd, (struct sockaddr *) &sin)) == 0) {
- fcntl (fd, F_SETFD, FD_CLOEXEC);
- conn->fd = fd;
- break;
- }
- else
- close (fd);
- }
- }
-
-#endif
- if (rc) {
- mutt_error (_("Could not connect to %s (%s)."), conn->account.host,
- (rc > 0) ? strerror (rc) : _("unknown error"));
- mutt_sleep (2);
- return -1;
- }
-
- return 0;
-}
projects / apps / madmutt.git / blobdiff