aboutsummaryrefslogtreecommitdiffstats
path: root/mail/mail-crypto.c
diff options
context:
space:
mode:
Diffstat (limited to 'mail/mail-crypto.c')
-rw-r--r--mail/mail-crypto.c694
1 files changed, 0 insertions, 694 deletions
diff --git a/mail/mail-crypto.c b/mail/mail-crypto.c
deleted file mode 100644
index c99b30ba3b..0000000000
--- a/mail/mail-crypto.c
+++ /dev/null
@@ -1,694 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-
-/*
- * mail-crypto.c: OpenPGP en/decryption & signature code
- *
- * FIXME FIXME FIXME: This should be in its own library or component
- */
-
-/*
- * Authors:
- * Nathan Thompson-Amato <ndt@jps.net>
- * Dan Winship <danw@helixcode.com>
- * Jeffrey Stedfast <fejj@helixcode.com>
- *
- * Copyright 2000, Helix Code, Inc. (http://www.helixcode.com)
- * Copyright 2000, Nathan Thompson-Amato
- * Copyright 1999, 2000, Anthony Mulcahy
- *
- * 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.
- *
- */
-
-#include <config.h>
-
-#ifdef PGP_PROGRAM
-#include <stdlib.h>
-#include <string.h>
-
-#include "mail-crypto.h"
-#include "mail-session.h"
-
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <signal.h>
-#include <stdio.h>
-#include <sys/ioctl.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <termios.h>
-#include <unistd.h>
-#include <signal.h>
-
-static int
-cleanup_child (pid_t child)
-{
- int status;
- pid_t wait_result;
- sigset_t mask, omask;
-
- /* PGP5 closes fds before exiting, meaning this might be called
- * too early. So wait a bit for the result.
- */
- sigemptyset (&mask);
- sigaddset (&mask, SIGALRM);
- sigprocmask (SIG_BLOCK, &mask, &omask);
- alarm (1);
- wait_result = waitpid (child, &status, 0);
- alarm (0);
- sigprocmask (SIG_SETMASK, &omask, NULL);
-
- if (wait_result == -1 && errno == EINTR) {
- /* The child is hanging: send a friendly reminder. */
- kill (child, SIGTERM);
- sleep (1);
- wait_result = waitpid (child, &status, WNOHANG);
- if (wait_result == 0) {
- /* Still hanging; use brute force. */
- kill (child, SIGKILL);
- sleep (1);
- wait_result = waitpid (child, &status, WNOHANG);
- }
- }
-
- if (wait_result != -1 && WIFEXITED (status))
- return WEXITSTATUS (status);
- else
- return -1;
-}
-
-static void
-cleanup_before_exec (int fd)
-{
- int maxfd, i;
-
- maxfd = sysconf (_SC_OPEN_MAX);
- if (maxfd < 0)
- return;
-
- /* Loop over all fds. */
- for (i = 0; i < maxfd; i++) {
- if ((STDIN_FILENO != i) &&
- (STDOUT_FILENO != i) &&
- (STDERR_FILENO != i) &&
- (fd != i))
- close (i);
- }
-}
-
-static int
-crypto_exec_with_passwd (char *path, char *argv[], const char *input,
- int passwd_fds[], const char *passphrase,
- char **output, char **diagnostics)
-{
- fd_set fdset, write_fdset;
- int ip_fds[2], op_fds[2], diag_fds[2];
- int select_result, read_len, write_len;
- size_t tmp_len;
- pid_t child;
- char *buf, *diag_buf;
- const char *passwd_next, *input_next;
- size_t size, alloc_size, diag_size, diag_alloc_size;
- gboolean eof_seen, diag_eof_seen, passwd_eof_seen, input_eof_seen;
- size_t passwd_remaining, passwd_incr, input_remaining, input_incr;
- struct timeval timeout;
-
- if ((pipe (ip_fds) < 0 ) ||
- (pipe (op_fds) < 0 ) ||
- (pipe (diag_fds) < 0 )) {
- *diagnostics = g_strdup_printf (_("Couldn't create pipe to "
- "%s: %s"), PGP_PROGRAM,
- g_strerror (errno));
- return 0;
- }
-
- if (!(child = fork ())) {
- /* In child */
-
- if ((dup2 (ip_fds[0], STDIN_FILENO) < 0 ) ||
- (dup2 (op_fds[1], STDOUT_FILENO) < 0 ) ||
- (dup2 (diag_fds[1], STDERR_FILENO) < 0 )) {
- _exit (255);
- }
-
- /* Dissociate from evolution-mail's controlling
- * terminal so that pgp/gpg won't be able to read from
- * it: PGP 2 will fall back to asking for the password
- * on /dev/tty if the passed-in password is incorrect.
- * This will make that fail rather than hanging.
- */
- setsid ();
-
- /* Close excess fds */
- cleanup_before_exec(passwd_fds[0]);
-
- execvp (path, argv);
- fprintf (stderr, _("Could not execute %s: %s\n"), argv[0],
- g_strerror (errno));
- _exit (255);
- } else if (child < 0) {
- *diagnostics = g_strdup_printf (_("Cannot fork %s: %s"),
- argv[0], g_strerror (errno));
- return 0;
- }
-
- /* Parent */
- close (ip_fds[0]);
- close (op_fds[1]);
- close (diag_fds[1]);
- close (passwd_fds[0]);
-
- timeout.tv_sec = 10; /* timeout in seconds */
- timeout.tv_usec = 0;
-
- size = diag_size = 0;
- alloc_size = 4096;
- diag_alloc_size = 1024;
- eof_seen = diag_eof_seen = FALSE;
-
- buf = g_malloc (alloc_size);
- diag_buf = g_malloc (diag_alloc_size);
-
- passwd_next = passphrase;
- passwd_remaining = strlen (passphrase);
- passwd_incr = fpathconf (passwd_fds[1], _PC_PIPE_BUF);
- /* Use a reasonable default value on error. */
- if (passwd_incr <= 0)
- passwd_incr = 1024;
- passwd_eof_seen = FALSE;
-
- input_next = input;
- input_remaining = strlen (input);
- input_incr = fpathconf (ip_fds[1], _PC_PIPE_BUF);
- if (input_incr <= 0)
- input_incr = 1024;
- input_eof_seen = FALSE;
-
- while (!(eof_seen && diag_eof_seen)) {
- FD_ZERO (&fdset);
- if (!eof_seen)
- FD_SET (op_fds[0], &fdset);
- if (!diag_eof_seen)
- FD_SET (diag_fds[0], &fdset);
-
- FD_ZERO (&write_fdset);
- if (!passwd_eof_seen)
- FD_SET (passwd_fds[1], &write_fdset);
- if (!input_eof_seen)
- FD_SET (ip_fds[1], &write_fdset);
-
- select_result = select (FD_SETSIZE, &fdset, &write_fdset,
- NULL, &timeout);
- if (select_result < 0) {
- if (errno == EINTR)
- continue;
- break;
- }
- if (select_result == 0) {
- /* timeout */
- break;
- }
-
- if (FD_ISSET (op_fds[0], &fdset)) {
- /* More output is available. */
-
- if (size + 4096 > alloc_size) {
- alloc_size += 4096;
- buf = g_realloc (buf , alloc_size);
- }
- read_len = read (op_fds[0], &buf[size],
- alloc_size - size - 1);
- if (read_len < 0) {
- if (errno == EINTR)
- continue;
- break;
- }
- if (read_len == 0)
- eof_seen = TRUE;
- size += read_len;
- }
-
- if (FD_ISSET(diag_fds[0], &fdset) ) {
- /* More stderr is available. */
-
- if (diag_size + 1024 > diag_alloc_size) {
- diag_alloc_size += 1024;
- diag_buf = g_realloc (diag_buf,
- diag_alloc_size);
- }
-
- read_len = read (diag_fds[0], &diag_buf[diag_size],
- diag_alloc_size - diag_size - 1);
- if (read_len < 0) {
- if (errno == EINTR)
- continue;
- break;
- }
- if (read_len == 0)
- diag_eof_seen = TRUE;
- diag_size += read_len;
- }
-
- if (FD_ISSET(passwd_fds[1], &write_fdset)) {
- /* Ready for more password input. */
-
- tmp_len = passwd_incr;
- if (tmp_len > passwd_remaining)
- tmp_len = passwd_remaining;
- write_len = write (passwd_fds[1], passwd_next,
- tmp_len);
- if (write_len < 0) {
- if (errno == EINTR)
- continue;
- break;
- }
- passwd_next += write_len;
- passwd_remaining -= write_len;
- if (passwd_remaining == 0) {
- close (passwd_fds[1]);
- passwd_eof_seen = TRUE;
- }
- }
-
- if (FD_ISSET(ip_fds[1], &write_fdset)) {
- /* Ready for more ciphertext input. */
-
- tmp_len = input_incr;
- if (tmp_len > input_remaining)
- tmp_len = input_remaining;
- write_len = write (ip_fds[1], input_next, tmp_len);
- if (write_len < 0) {
- if (errno == EINTR)
- continue;
- break;
- }
- input_next += write_len;
- input_remaining -= write_len;
- if (input_remaining == 0 ) {
- close (ip_fds[1]);
- input_eof_seen = TRUE;
- }
- }
- }
-
- buf[size] = 0;
- diag_buf[diag_size] = 0;
- close (op_fds[0]);
- close (diag_fds[0]);
-
- *output = buf;
- *diagnostics = diag_buf;
-
- return cleanup_child (child);
-}
-
-/*----------------------------------------------------------------------*
- * Public crypto functions
- *----------------------------------------------------------------------*/
-
-/**
- * mail_crypto_openpgp_decrypt: pgp decrypt ciphertext
- * @ciphertext: ciphertext to decrypt
- * @ex: a CamelException
- *
- * Decrypts the ciphertext
- **/
-
-char *
-mail_crypto_openpgp_decrypt (const char *ciphertext, CamelException *ex)
-{
- int retval, i;
- char *path, *argv[12];
- char *passphrase, *plaintext = NULL, *diagnostics = NULL;
- int passwd_fds[2];
- char passwd_fd[32];
-
- passphrase = mail_session_request_dialog (
- _("Please enter your PGP/GPG passphrase."),
- TRUE, "pgp", FALSE);
- if (!passphrase) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("No password provided."));
- return NULL;
- }
-
- if (pipe (passwd_fds) < 0) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Couldn't create pipe to GPG/PGP: %s"),
- g_strerror (errno));
- return NULL;
- }
-
- i = 0;
-#if defined(GPG_PATH)
- path = GPG_PATH;
-
- argv[i++] = "gpg";
- argv[i++] = "--verbose";
- argv[i++] = "--yes";
- argv[i++] = "--batch";
-
- argv[i++] = "--output";
- argv[i++] = "-"; /* output to stdout */
-
- argv[i++] = "--decrypt";
-
- argv[i++] = "--passphrase-fd";
- sprintf (passwd_fd, "%d", passwd_fds[0]);
- argv[i++] = passwd_fd;
-#elif defined(PGP5_PATH)
- path = PGP5_PATH;
-
- argv[i++] = "pgpv";
- argv[i++] = "-f";
- argv[i++] = "+batchmode=1";
-
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
-#else
- path = PGP_PATH;
-
- argv[i++] = "pgp";
- argv[i++] = "-f";
-
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
-#endif
- argv[i++] = NULL;
-
- retval = crypto_exec_with_passwd (path, argv, ciphertext, passwd_fds,
- passphrase, &plaintext,
- &diagnostics);
- if (retval != 0 || !*plaintext) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- "%s", diagnostics);
- g_free (plaintext);
- g_free (diagnostics);
- return NULL;
- }
-
- g_free (diagnostics);
- return plaintext;
-}
-
-/**
- * mail_crypto_openpgp_encrypt: pgp encrypt plaintext
- * @plaintext: text to encrypt
- * @recipients: an array of recipients to encrypt to (preferably each
- * element should be a pgp keyring ID however sometimes email
- * addresses will work assuming that your pgp keyring has an
- * entry for that address)
- * @sign: TRUE if you wish to sign the encrypted text as well, FALSE otherwise
- * @ex: a CamelException
- *
- * Encrypts the plaintext to the list of recipients and optionally signs
- **/
-
-char *
-mail_crypto_openpgp_encrypt (const char *plaintext,
- const GPtrArray *recipients,
- gboolean sign, CamelException *ex)
-{
- GPtrArray *recipient_list = NULL;
- GPtrArray *argv;
- int retval, r;
- char *path;
- char *passphrase = NULL, *ciphertext = NULL, *diagnostics = NULL;
- int passwd_fds[2];
- char passwd_fd[32];
-
- if (sign) {
- /* we only need the passphrase if we plan to sign */
- passphrase = mail_session_request_dialog (
- _("Please enter your PGP/GPG passphrase."),
- TRUE, "pgp", FALSE);
- if (!passphrase) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("No password provided."));
- return NULL;
- }
-
- if (pipe (passwd_fds) < 0) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Couldn't create pipe to GPG/PGP: %s"),
- g_strerror (errno));
- return NULL;
- }
- }
-
- argv = g_ptr_array_new ();
-#if defined(GPG_PATH)
- path = GPG_PATH;
-
- recipient_list = g_ptr_array_new ();
- for (r = 0; r < recipients->len; r++) {
- char *buf, *recipient;
-
- recipient = recipients->pdata[r];
- buf = g_strdup_printf ("-r %s", recipient);
- g_ptr_array_add (recipient_list, buf);
- }
-
- g_ptr_array_add (argv, "gpg");
- g_ptr_array_add (argv, "--verbose");
- g_ptr_array_add (argv, "--yes");
- g_ptr_array_add (argv, "--batch");
-
- g_ptr_array_add (argv, "--armor");
-
- for (r = 0; r < recipient_list->len; r++)
- g_ptr_array_add (argv, recipient_list->pdata[r]);
-
- g_ptr_array_add (argv, "--output");
- g_ptr_array_add (argv, "-"); /* output to stdout */
-
- g_ptr_array_add (argv, "--encrypt");
-
- if (sign) {
- g_ptr_array_add (argv, "--sign");
-
- g_ptr_array_add (argv, "--passphrase-fd");
- sprintf (passwd_fd, "%d", passwd_fds[0]);
- g_ptr_array_add (argv, passwd_fd);
- }
-#elif defined(PGP5_PATH)
- path = PGP5_PATH;
-
- recipient_list = g_ptr_array_new ();
- for (r = 0; r < recipients->len; r++) {
- char *buf, *recipient;
-
- recipient = recipients->pdata[r];
- buf = g_strdup_printf ("-r %s", recipient);
- g_ptr_array_add (recipient_list, buf);
- }
-
- g_ptr_array_add (argv, "pgpe");
-
- for (r = 0; r < recipient_list->len; r++)
- g_ptr_array_add (argv, recipient_list->pdata[r]);
-
- g_ptr_array_add (argv, "-f");
- g_ptr_array_add (argv, "-z");
- g_ptr_array_add (argv, "-a");
- g_ptr_array_add (argv, "-o");
- g_ptr_array_add (argv, "-"); /* output to stdout */
-
- if (sign) {
- g_ptr_array_add (argv, "-s");
-
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
- }
-#else
- path = PGP_PATH;
-
- recipient_list = g_ptr_array_new ();
- for (r = 0; r < recipients->len; r++) {
- char *buf, *recipient;
-
- recipient = recipients->pdata[r];
- buf = g_strdup_printf ("-r %s", recipient);
- g_ptr_array_add (recipient_list, buf);
- }
-
- g_ptr_array_add (argv, "pgp");
- g_ptr_array_add (argv, "-f");
- g_ptr_array_add (argv, "-e");
- g_ptr_array_add (argv, "-a");
- g_ptr_array_add (argv, "-o");
- g_ptr_array_add (argv, "-");
-
- for (r = 0; r < recipient_list->len; r++)
- g_ptr_array_add (argv, recipient_list->pdata[r]);
-
- if (sign) {
- g_ptr_array_add (argv, "-s");
-
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
- }
-#endif
- g_ptr_array_add (argv, NULL);
-
- retval = crypto_exec_with_passwd (path, (char **) argv->pdata, plaintext,
- passwd_fds, passphrase, &ciphertext,
- &diagnostics);
-
- if (retval != 0 || !*ciphertext) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- "%s", diagnostics);
- g_free (ciphertext);
- ciphertext = NULL;
- }
-
- if (recipient_list) {
- for (r = 0; r < recipient_list->len; r++)
- g_free (recipient_list->pdata[r]);
- g_ptr_array_free (recipient_list, TRUE);
- }
-
- g_ptr_array_free (argv, TRUE);
-
- g_free (diagnostics);
-
- return ciphertext;
-}
-
-/**
- * mail_crypto_openpgp_clearsign: pgp clearsign plaintext
- * @plaintext: text to sign
- * @userid: user id to sign with
- * @ex: a CamelException
- *
- * Clearsigns the plaintext using the user id
- **/
-
-char *
-mail_crypto_openpgp_clearsign (const char *plaintext, const char *userid,
- CamelException *ex)
-{
- int retval;
- char *path, *argv[20];
- int i;
- char *passphrase;
- char *ciphertext = NULL;
- char *diagnostics = NULL;
- int passwd_fds[2];
- char passwd_fd[32];
-
-#ifndef PGP_PROGRAM
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("No GPG/PGP program available."));
- return NULL;
-#endif
-
- passphrase = mail_session_request_dialog (_("Please enter your PGP/GPG passphrase."),
- TRUE, "pgp", FALSE);
-
- if (!passphrase) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("No password provided."));
- return NULL;
- }
-
- if (pipe (passwd_fds) < 0) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Couldn't create pipe to GPG/PGP: %s"),
- g_strerror (errno));
- return NULL;
- }
-
- i = 0;
-#if defined(GPG_PATH)
- path = GPG_PATH;
-
- argv[i++] = "gpg";
-
- argv[i++] = "--clearsign";
-
- if (userid) {
- argv[i++] = "-u";
- argv[i++] = (char *) userid;
- }
-
- argv[i++] = "--verbose";
- argv[i++] = "--yes";
- argv[i++] = "--batch";
-
- argv[i++] = "--armor";
-
- argv[i++] = "--output";
- argv[i++] = "-"; /* output to stdout */
-
- argv[i++] = "--passphrase-fd";
- sprintf (passwd_fd, "%d", passwd_fds[0]);
- argv[i++] = passwd_fd;
-#elif defined(PGP5_PATH)
- path = PGP5_PATH;
-
- argv[i++] = "pgps";
-
- if (userid) {
- argv[i++] = "-u";
- argv[i++] = (char *) userid;
- }
-
- argv[i++] = "-f";
- argv[i++] = "-z";
- argv[i++] = "-a";
- argv[i++] = "-o";
- argv[i++] = "-"; /* output to stdout */
-
- argv[i++] = "-s";
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
-#else
- path = PGP_PATH;
-
- argv[i++] = "pgp";
- argv[i++] = "-f";
- argv[i++] = "-e";
- argv[i++] = "-a";
- argv[i++] = "-o";
- argv[i++] = "-";
-
- argv[i++] = "-s";
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
-#endif
- argv[i++] = NULL;
-
- retval = crypto_exec_with_passwd (path, argv, plaintext, passwd_fds,
- passphrase, &ciphertext,
- &diagnostics);
-
- if (retval != 0 || !*ciphertext) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- "%s", diagnostics);
- g_free (ciphertext);
- ciphertext = NULL;
- }
-
- g_free (diagnostics);
- return ciphertext;
-}
-
-#endif /* PGP_PROGRAM */
generated by cgit (git 2.34.1) at 2024-11-25 09:11:11 +0800