aboutsummaryrefslogtreecommitdiffstats
path: root/camel/camel-pgp-context.c
diff options
context:
space:
mode:
Diffstat (limited to 'camel/camel-pgp-context.c')
-rw-r--r--camel/camel-pgp-context.c1359
1 files changed, 0 insertions, 1359 deletions
diff --git a/camel/camel-pgp-context.c b/camel/camel-pgp-context.c
deleted file mode 100644
index 47e912a903..0000000000
--- a/camel/camel-pgp-context.c
+++ /dev/null
@@ -1,1359 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/*
- * Authors: Jeffrey Stedfast <fejj@ximian.com>
- *
- * Copyright 2001 Ximian, Inc. (www.ximian.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * 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.
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include "camel-pgp-context.h"
-
-#include "camel-stream-fs.h"
-#include "camel-stream-mem.h"
-
-#include "camel-operation.h"
-
-#include "camel-charset-map.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <dirent.h>
-
-#include <ctype.h>
-
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <termios.h>
-#include <unistd.h>
-
-#include <ctype.h>
-
-#include <iconv.h>
-#include <gal/unicode/gunicode.h>
-#include <gal/util/e-iconv.h>
-
-#define d(x)
-
-struct _CamelPgpContextPrivate {
- CamelPgpType type;
- char *path;
-};
-
-static int pgp_sign (CamelCipherContext *ctx, const char *userid, CamelCipherHash hash,
- CamelStream *istream, CamelStream *ostream, CamelException *ex);
-static CamelCipherValidity *pgp_verify (CamelCipherContext *context, CamelCipherHash hash,
- CamelStream *istream, CamelStream *sigstream,
- CamelException *ex);
-static int pgp_encrypt (CamelCipherContext *context, gboolean sign, const char *userid,
- GPtrArray *recipients, CamelStream *istream, CamelStream *ostream,
- CamelException *ex);
-static int pgp_decrypt (CamelCipherContext *context, CamelStream *istream,
- CamelStream *ostream, CamelException *ex);
-
-static const char *pgp_hash_to_id(CamelCipherContext *context, CamelCipherHash hash);
-static CamelCipherHash pgp_id_to_hash(CamelCipherContext *context, const char *id);
-
-static CamelCipherContextClass *parent_class;
-
-static void
-camel_pgp_context_init (CamelPgpContext *context)
-{
- CamelCipherContext *ciph = (CamelCipherContext *)context;
-
- context->priv = g_new0 (struct _CamelPgpContextPrivate, 1);
-
- ciph->sign_protocol = "application/pgp-signature";
- ciph->encrypt_protocol = "application/pgp-encrypted";
-}
-
-static void
-camel_pgp_context_finalise (CamelObject *o)
-{
- CamelPgpContext *context = (CamelPgpContext *)o;
-
- g_free (context->priv->path);
-
- g_free (context->priv);
-}
-
-static void
-camel_pgp_context_class_init (CamelPgpContextClass *camel_pgp_context_class)
-{
- CamelCipherContextClass *camel_cipher_context_class =
- CAMEL_CIPHER_CONTEXT_CLASS (camel_pgp_context_class);
-
- parent_class = CAMEL_CIPHER_CONTEXT_CLASS (camel_type_get_global_classfuncs (camel_cipher_context_get_type ()));
-
- camel_cipher_context_class->sign = pgp_sign;
- camel_cipher_context_class->verify = pgp_verify;
- camel_cipher_context_class->encrypt = pgp_encrypt;
- camel_cipher_context_class->decrypt = pgp_decrypt;
- camel_cipher_context_class->hash_to_id = pgp_hash_to_id;
- camel_cipher_context_class->id_to_hash = pgp_id_to_hash;
-}
-
-CamelType
-camel_pgp_context_get_type (void)
-{
- static CamelType type = CAMEL_INVALID_TYPE;
-
- if (type == CAMEL_INVALID_TYPE) {
- type = camel_type_register (camel_cipher_context_get_type (),
- "CamelPgpContext",
- sizeof (CamelPgpContext),
- sizeof (CamelPgpContextClass),
- (CamelObjectClassInitFunc) camel_pgp_context_class_init,
- NULL,
- (CamelObjectInitFunc) camel_pgp_context_init,
- (CamelObjectFinalizeFunc) camel_pgp_context_finalise);
- }
-
- return type;
-}
-
-
-/**
- * camel_pgp_context_new:
- * @session: CamelSession
- * @type: One of CAMEL_PGP_TYPE_PGP2, PGP5, GPG, or PGP6
- * @path: path to PGP binary
- * @remember: Remember the pgp passphrase
- *
- * This creates a new CamelPgpContext object which is used to sign,
- * verify, encrypt and decrypt streams.
- *
- * Return value: the new CamelPgpContext
- **/
-CamelCipherContext *
-camel_pgp_context_new (CamelSession *session, CamelPgpType type, const char *path)
-{
- CamelPgpContext *context;
-
- g_return_val_if_fail (session != NULL, NULL);
-
- if (type == CAMEL_PGP_TYPE_NONE || !path || !*path)
- return NULL;
-
- context = CAMEL_PGP_CONTEXT (camel_object_new (CAMEL_PGP_CONTEXT_TYPE));
-
- camel_cipher_context_construct (CAMEL_CIPHER_CONTEXT (context), session);
-
- context->priv->type = type;
- context->priv->path = g_strdup (path);
-
- return (CamelCipherContext *) context;
-}
-
-
-
-static const gchar *
-pgp_get_type_as_string (CamelPgpType type)
-{
- switch (type) {
- case CAMEL_PGP_TYPE_PGP2:
- return "PGP 2.6.x";
- case CAMEL_PGP_TYPE_PGP5:
- return "PGP 5.0";
- case CAMEL_PGP_TYPE_PGP6:
- return "PGP 6.5.8";
- case CAMEL_PGP_TYPE_GPG:
- return "GnuPG";
- default:
- g_assert_not_reached ();
- return NULL;
- }
-}
-
-static gchar *
-pgp_get_passphrase (CamelSession *session, CamelPgpType pgp_type, char *userid)
-{
- gchar *passphrase, *prompt;
- const char *type;
-
- type = pgp_get_type_as_string (pgp_type);
-
- if (userid)
- prompt = g_strdup_printf (_("Please enter your %s passphrase for %s"),
- type, userid);
- else
- prompt = g_strdup_printf (_("Please enter your %s passphrase"),
- type);
-
- /* Use the userid as a key if possible, else be generic and use the type */
- passphrase = camel_session_get_password (session, prompt, TRUE,
- NULL, userid ? userid : type,
- NULL);
- g_free (prompt);
-
- return passphrase;
-}
-
-static void
-pgp_forget_passphrase (CamelSession *session, CamelPgpType pgp_type, char *userid)
-{
- const char *type = NULL;
-
- if (!userid)
- type = pgp_get_type_as_string (pgp_type);
-
- camel_session_forget_password (session, NULL, userid ? userid : type, NULL);
-}
-
-static void
-pass_free (char *passphrase)
-{
- if (passphrase) {
- memset (passphrase, 0, strlen (passphrase));
- g_free (passphrase);
- }
-}
-
-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 (const char *path, char *argv[], const char *input, int inlen,
- int passwd_fds[], const char *passphrase,
- char **output, int *outlen, char **diagnostics)
-{
- gboolean eof_seen, diag_eof_seen, passwd_eof_seen, input_eof_seen;
- size_t passwd_remaining, passwd_incr, input_remaining, input_incr;
- size_t size, alloc_size, diag_size, diag_alloc_size;
- int select_result, read_len, write_len, cancel_fd;
- int fds[6], *ip_fds, *op_fds, *diag_fds;
- const char *passwd_next, *input_next;
- char *buf = NULL, *diag_buf = NULL;
- fd_set fdset, write_fdset;
- struct timeval timeout;
- size_t tmp_len;
- pid_t child;
- int i;
-
- if (camel_operation_cancel_check (NULL)) {
- errno = EINTR;
- return -1;
- }
-
- for (i = 0; i < 6; i++)
- fds[i] = -1;
-
- ip_fds = fds;
- op_fds = fds + 2;
- diag_fds = fds + 4;
-
- if ((pipe (ip_fds) == -1) || (pipe (op_fds) == -1) || (pipe (diag_fds) == -1)) {
- *diagnostics = g_strdup_printf ("Couldn't create pipe to %s: %s",
- path, g_strerror (errno));
-
- for (i = 0; i < 6; i++)
- close (fds[i]);
-
- close (passwd_fds[0]);
- close (passwd_fds[1]);
-
- return -1;
- }
-
- 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 -1;
- }
-
- /* Parent */
- close (ip_fds[0]);
- close (op_fds[1]);
- close (diag_fds[1]);
- close (passwd_fds[0]);
-
- fcntl (ip_fds[1], F_SETFL, O_NONBLOCK);
- fcntl (op_fds[0], F_SETFL, O_NONBLOCK);
- fcntl (diag_fds[0], F_SETFL, O_NONBLOCK);
-
- 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 = passphrase ? strlen (passphrase) : 0;
- 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 = inlen;
- input_incr = fpathconf (ip_fds[1], _PC_PIPE_BUF);
- if (input_incr <= 0)
- input_incr = 1024;
- input_eof_seen = FALSE;
-
- cancel_fd = camel_operation_cancel_fd (NULL);
-
- while (!(eof_seen && diag_eof_seen)) {
- int max = 0;
-
- FD_ZERO (&fdset);
- if (!eof_seen) {
- FD_SET (op_fds[0], &fdset);
- max = op_fds[0];
- }
- if (!diag_eof_seen) {
- FD_SET (diag_fds[0], &fdset);
- max = MAX (max, diag_fds[0]);
- }
- if (cancel_fd != -1) {
- FD_SET (cancel_fd, &fdset);
- max = MAX (max, cancel_fd);
- }
-
- FD_ZERO (&write_fdset);
- if (!passwd_eof_seen) {
- FD_SET (passwd_fds[1], &write_fdset);
- max = MAX (max, passwd_fds[1]);
- }
- if (!input_eof_seen) {
- FD_SET (ip_fds[1], &write_fdset);
- max = MAX (max, ip_fds[1]);
- }
-
- select_result = select (max + 1, &fdset, &write_fdset,
- NULL, &timeout);
-
- if (select_result < 0) {
- if (errno == EINTR)
- continue;
- break;
- } else if (select_result == 0) {
- /* timeout */
- break;
- }
-
- if (cancel_fd != -1 && FD_ISSET (cancel_fd, &fdset)) {
- /* user-cancelled */
- 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]);
-
- if (!passwd_eof_seen)
- close (passwd_fds[1]);
-
- *output = buf;
- if (outlen)
- *outlen = size;
- *diagnostics = diag_buf;
-
- return cleanup_child (child);
-}
-
-
-/*----------------------------------------------------------------------*
- * Public crypto functions
- *----------------------------------------------------------------------*/
-
-static char *
-hash_string (CamelPgpContext *ctx, CamelCipherHash hash)
-{
- if (hash == CAMEL_CIPHER_HASH_DEFAULT)
- return NULL;
-
- switch (ctx->priv->type) {
- case CAMEL_PGP_TYPE_GPG:
- switch (hash) {
- case CAMEL_CIPHER_HASH_MD2:
- return "MD2";
- case CAMEL_CIPHER_HASH_MD5:
- return "MD5";
- case CAMEL_CIPHER_HASH_SHA1:
- return "SHA1";
- case CAMEL_CIPHER_HASH_RIPEMD160:
- return "RIPEMD160";
- default:
- g_assert_not_reached ();
- }
- break;
- case CAMEL_PGP_TYPE_PGP2:
- /* FIXME: find a way to specify a hash algorithm for pgp2 */
- return NULL;
- case CAMEL_PGP_TYPE_PGP5:
- case CAMEL_PGP_TYPE_PGP6:
- switch (hash) {
- case CAMEL_CIPHER_HASH_MD2:
- return "+hashnum=5";
- case CAMEL_CIPHER_HASH_MD5:
- return "+hashnum=1";
- case CAMEL_CIPHER_HASH_SHA1:
- return "+hashnum=2";
- case CAMEL_CIPHER_HASH_RIPEMD160:
- return "+hashnum=3";
- default:
- g_assert_not_reached ();
- }
- break;
- default:
- g_assert_not_reached ();
- break;
- }
-
- return NULL;
-}
-
-static int
-pgp_sign (CamelCipherContext *ctx, const char *userid, CamelCipherHash hash,
- CamelStream *istream, CamelStream *ostream, CamelException *ex)
-{
- CamelPgpContext *context = CAMEL_PGP_CONTEXT (ctx);
- GByteArray *plaintext;
- CamelStream *stream;
- char *argv[20];
- char *ciphertext = NULL;
- char *diagnostics = NULL;
- char *passphrase = NULL;
- char *hash_str = NULL;
- int passwd_fds[2];
- char passwd_fd[32];
- int retval, i;
-
- /* check for the now unsupported pgp 2.6.x type */
- if (context->priv->type == CAMEL_PGP_TYPE_PGP2) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- "PGP 2.6.x is no longer supported.");
- return -1;
- }
-
- /* get the plaintext in a form we can use */
- plaintext = g_byte_array_new ();
- stream = camel_stream_mem_new ();
- camel_stream_mem_set_byte_array (CAMEL_STREAM_MEM (stream), plaintext);
- camel_stream_write_to_stream (istream, stream);
- camel_object_unref (CAMEL_OBJECT (stream));
-
- if (!plaintext->len) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot sign this message: no plaintext to sign"));
- goto exception;
- }
-
- passphrase = pgp_get_passphrase (ctx->session, context->priv->type, (char *) userid);
- if (!passphrase) {
- camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
- _("Cannot sign this message: no password provided"));
- goto exception;
- }
-
- if (pipe (passwd_fds) < 0) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot sign this message: couldn't create pipe to GPG/PGP: %s"),
- g_strerror (errno));
- goto exception;
- }
-
- hash_str = hash_string (context, hash);
-
- i = 0;
- switch (context->priv->type) {
- case CAMEL_PGP_TYPE_GPG:
- argv[i++] = "gpg";
-
- argv[i++] = "--sign";
- argv[i++] = "-b";
- if (hash_str) {
- argv[i++] = "--digest-algo";
- argv[i++] = hash_str;
- }
-
- if (userid) {
- argv[i++] = "-u";
- argv[i++] = (char *) userid;
- }
-
- argv[i++] = "--verbose";
- argv[i++] = "--no-secmem-warning";
- argv[i++] = "--no-greeting";
- argv[i++] = "--yes";
- argv[i++] = "--always-trust";
- 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;
- break;
- case CAMEL_PGP_TYPE_PGP5:
- argv[i++] = "pgps";
-
- if (hash_str)
- argv[i++] = hash_str;
-
- if (userid) {
- argv[i++] = "-u";
- argv[i++] = (char *) userid;
- }
-
- argv[i++] = "-b"; /* -b means break off (detach) the signature */
- argv[i++] = "-f"; /* -f means act as a unix-style filter */
- argv[i++] = "-v"; /* -v means verbose diagnostic messages */
- argv[i++] = "-z"; /* FIXME: do we want this option!? */
- argv[i++] = "-a"; /* -a means ascii armor */
- argv[i++] = "-o"; /* -o specifies an output stream */
- argv[i++] = "-"; /* ...in this case, stdout */
-
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
- break;
- case CAMEL_PGP_TYPE_PGP2:
- case CAMEL_PGP_TYPE_PGP6:
- argv[i++] = "pgp";
-
- if (hash_str)
- argv[i++] = hash_str;
-
- if (userid) {
- argv[i++] = "-u";
- argv[i++] = (char *) userid;
- }
-
- argv[i++] = "-f"; /* -f means act as a unix-style filter */
- argv[i++] = "-l"; /* -l means show longer more descriptive diagnostic messages */
- argv[i++] = "-a"; /* -a means ascii armor */
- argv[i++] = "-o"; /* -o specifies an output stream */
- argv[i++] = "-"; /* ...in this case, stdout */
-
- argv[i++] = "-sb"; /* create a detached signature */
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
- break;
- default:
- g_assert_not_reached ();
- break;
- }
-
- argv[i++] = NULL;
-
- retval = crypto_exec_with_passwd (context->priv->path, argv,
- plaintext->data, plaintext->len,
- passwd_fds, passphrase,
- &ciphertext, NULL,
- &diagnostics);
-
- g_byte_array_free (plaintext, TRUE);
- pass_free (passphrase);
-
- if (retval != 0 || !*ciphertext) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, diagnostics);
- g_free (diagnostics);
- g_free (ciphertext);
- pgp_forget_passphrase (ctx->session, context->priv->type, (char *) userid);
-
- return -1;
- }
-
- g_free (diagnostics);
-
- camel_stream_write (ostream, ciphertext, strlen (ciphertext));
- g_free (ciphertext);
-
- return 0;
-
- exception:
-
- g_byte_array_free (plaintext, TRUE);
-
- if (passphrase) {
- pgp_forget_passphrase (ctx->session, context->priv->type, (char *) userid);
- pass_free (passphrase);
- }
-
- return -1;
-}
-
-
-static char *
-swrite (CamelStream *istream)
-{
- CamelStream *ostream;
- char *template;
- int fd;
-
- template = g_strdup ("/tmp/evolution-pgp.XXXXXX");
- fd = mkstemp (template);
- if (fd == -1) {
- g_free (template);
- return NULL;
- }
-
- ostream = camel_stream_fs_new_with_fd (fd);
- camel_stream_write_to_stream (istream, ostream);
- camel_object_unref (CAMEL_OBJECT (ostream));
-
- return template;
-}
-
-
-static CamelCipherValidity *
-pgp_verify (CamelCipherContext *ctx, CamelCipherHash hash, CamelStream *istream,
- CamelStream *sigstream, CamelException *ex)
-{
- CamelPgpContext *context = CAMEL_PGP_CONTEXT (ctx);
- CamelCipherValidity *valid = NULL;
- GByteArray *plaintext;
- CamelStream *stream;
- char *argv[20];
- char *cleartext = NULL;
- char *diagnostics = NULL;
- int passwd_fds[2];
- char *sigfile = NULL;
- int retval, i, clearlen;
-
- /* check for the now unsupported pgp 2.6.x type */
- if (context->priv->type == CAMEL_PGP_TYPE_PGP2) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- "PGP 2.6.x is no longer supported.");
- return NULL;
- }
-
- /* get the plaintext in a form we can use */
- plaintext = g_byte_array_new ();
- stream = camel_stream_mem_new ();
- camel_stream_mem_set_byte_array (CAMEL_STREAM_MEM (stream), plaintext);
- camel_stream_write_to_stream (istream, stream);
- camel_object_unref (CAMEL_OBJECT (stream));
-
- if (!plaintext->len) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot verify this message: no plaintext to verify"));
- goto exception;
- }
-
- if (pipe (passwd_fds) < 0) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot verify this message: couldn't create pipe to GPG/PGP: %s"),
- g_strerror (errno));
- goto exception;
- }
-
- if (sigstream != NULL) {
- /* We are going to verify a detached signature so save
- the signature to a temp file. */
- sigfile = swrite (sigstream);
- if (!sigfile) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot verify this message: couldn't create temp file: %s"),
- g_strerror (errno));
- goto exception;
- }
- }
-
- i = 0;
- switch (context->priv->type) {
- case CAMEL_PGP_TYPE_GPG:
- argv[i++] = "gpg";
-
- argv[i++] = "--verbose";
- argv[i++] = "--no-secmem-warning";
- argv[i++] = "--no-greeting";
- argv[i++] = "--no-tty";
- if (!camel_session_is_online (ctx->session))
- argv[i++] = "--no-auto-key-retrieve";
-
- argv[i++] = "--yes";
- argv[i++] = "--batch";
-
- argv[i++] = "--verify";
-
- if (sigstream != NULL)
- argv[i++] = sigfile;
-
- argv[i++] = "-";
- break;
- case CAMEL_PGP_TYPE_PGP5:
- argv[i++] = "pgpv";
-
- argv[i++] = "-z";
-
- if (sigstream != NULL)
- argv[i++] = sigfile;
-
- argv[i++] = "-f";
-
- break;
- case CAMEL_PGP_TYPE_PGP2:
- case CAMEL_PGP_TYPE_PGP6:
- argv[i++] = "pgp";
-
- if (sigstream != NULL)
- argv[i++] = sigfile;
-
- argv[i++] = "-f";
-
- break;
- default:
- g_assert_not_reached ();
- break;
- }
-
- argv[i++] = NULL;
-
- clearlen = 0;
- retval = crypto_exec_with_passwd (context->priv->path, argv,
- plaintext->data, plaintext->len,
- passwd_fds, NULL,
- &cleartext, &clearlen,
- &diagnostics);
-
- g_byte_array_free (plaintext, TRUE);
-
- /* cleanup */
- if (sigfile) {
- unlink (sigfile);
- g_free (sigfile);
- }
-
- valid = camel_cipher_validity_new ();
-
- if (retval != 0) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, diagnostics);
-
- camel_cipher_validity_set_valid (valid, FALSE);
- } else {
- camel_cipher_validity_set_valid (valid, TRUE);
- }
-
- if (diagnostics) {
- const char *locale;
- char *desc, *outbuf;
- size_t inlen, outlen;
- iconv_t cd;
-
- inlen = strlen (diagnostics);
- outlen = inlen * 4;
-
- desc = outbuf = g_new (unsigned char, outlen + 1);
-
- locale = e_iconv_locale_charset ();
- if (!locale)
- locale = "iso-8859-1";
-
- cd = e_iconv_open ("UTF-8", locale);
- if (cd != (iconv_t) -1) {
- const char *inbuf;
- size_t ret;
-
- inbuf = diagnostics;
- ret = e_iconv (cd, &inbuf, &inlen, &outbuf, &outlen);
- if (ret != (size_t) -1) {
- e_iconv (cd, NULL, 0, &outbuf, &outlen);
- }
- e_iconv_close (cd);
-
- *outbuf = '\0';
- } else {
- const char *inptr, *inend;
-
- g_warning ("CamelPgpContext::pgp_verify: cannot convert from %s to UTF-8", locale);
-
- inptr = diagnostics;
- inend = inptr + inlen;
-
- while (inptr && inptr < inend && g_unichar_validate (g_utf8_get_char (inptr))) {
- *outbuf++ = g_utf8_get_char (inptr) & 0xff;
- inptr = g_utf8_next_char (inptr);
- }
-
- *outbuf = '\0';
- }
-
- camel_cipher_validity_set_description (valid, desc);
- g_free (desc);
- }
-
- g_free (diagnostics);
- g_free (cleartext);
-
- return valid;
-
- exception:
-
- g_byte_array_free (plaintext, TRUE);
-
- return NULL;
-}
-
-
-static int
-pgp_encrypt (CamelCipherContext *ctx, gboolean sign, const char *userid, GPtrArray *recipients,
- CamelStream *istream, CamelStream *ostream, CamelException *ex)
-{
- CamelPgpContext *context = CAMEL_PGP_CONTEXT (ctx);
- GByteArray *plaintext;
- CamelStream *stream;
- GPtrArray *argv;
- int retval, r;
- char *ciphertext = NULL;
- char *diagnostics = NULL;
- int passwd_fds[2];
- char passwd_fd[32];
- char *passphrase = NULL;
-
- /* check for the now unsupported pgp 2.6.x type */
- if (context->priv->type == CAMEL_PGP_TYPE_PGP2) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- "PGP 2.6.x is no longer supported.");
- return -1;
- }
-
- /* get the plaintext in a form we can use */
- plaintext = g_byte_array_new ();
- stream = camel_stream_mem_new ();
- camel_stream_mem_set_byte_array (CAMEL_STREAM_MEM (stream), plaintext);
- camel_stream_write_to_stream (istream, stream);
- camel_object_unref (CAMEL_OBJECT (stream));
-
- if (!plaintext->len) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot encrypt this message: no plaintext to encrypt"));
- goto exception;
- }
-
- if (sign) {
- /* we only need a passphrase if we intend on signing */
- passphrase = pgp_get_passphrase (ctx->session, context->priv->type,
- (char *) userid);
- if (!passphrase) {
- camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
- _("Cannot encrypt this message: no password provided"));
- goto exception;
- }
- }
-
- if (pipe (passwd_fds) < 0) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot encrypt this message: couldn't create pipe to GPG/PGP: %s"),
- g_strerror (errno));
-
- goto exception;
- }
-
- /* check to make sure we have recipients */
- if (recipients->len == 0) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot encrypt this message: no recipients specified"));
-
- goto exception;
- }
-
- argv = g_ptr_array_new ();
-
- switch (context->priv->type) {
- case CAMEL_PGP_TYPE_GPG:
- g_ptr_array_add (argv, "gpg");
-
- g_ptr_array_add (argv, "--verbose");
- g_ptr_array_add (argv, "--no-secmem-warning");
- g_ptr_array_add (argv, "--no-greeting");
- g_ptr_array_add (argv, "--yes");
- g_ptr_array_add (argv, "--always-trust");
- g_ptr_array_add (argv, "--batch");
-
- g_ptr_array_add (argv, "--armor");
-
- for (r = 0; r < recipients->len; r++) {
- g_ptr_array_add (argv, "-r");
- g_ptr_array_add (argv, recipients->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, "-u");
- g_ptr_array_add (argv, (char *) userid);
-
- g_ptr_array_add (argv, "--passphrase-fd");
- sprintf (passwd_fd, "%d", passwd_fds[0]);
- g_ptr_array_add (argv, passwd_fd);
- }
- break;
- case CAMEL_PGP_TYPE_PGP5:
- g_ptr_array_add (argv, "pgpe");
-
- for (r = 0; r < recipients->len; r++) {
- g_ptr_array_add (argv, "-r");
- g_ptr_array_add (argv, recipients->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");
-
- g_ptr_array_add (argv, "-u");
- g_ptr_array_add (argv, (gchar *) userid);
-
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
- }
- break;
- case CAMEL_PGP_TYPE_PGP2:
- case CAMEL_PGP_TYPE_PGP6:
- 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 < recipients->len; r++)
- g_ptr_array_add (argv, recipients->pdata[r]);
-
- if (sign) {
- g_ptr_array_add (argv, "-s");
-
- g_ptr_array_add (argv, "-u");
- g_ptr_array_add (argv, (gchar *) userid);
-
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
- }
- break;
- default:
- g_assert_not_reached ();
- break;
- }
-
- g_ptr_array_add (argv, NULL);
-
- retval = crypto_exec_with_passwd (context->priv->path,
- (char **) argv->pdata,
- plaintext->data, plaintext->len,
- passwd_fds, passphrase,
- &ciphertext, NULL,
- &diagnostics);
-
- g_byte_array_free (plaintext, TRUE);
-
- pass_free (passphrase);
- g_ptr_array_free (argv, TRUE);
-
- if (retval != 0 || !*ciphertext) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, diagnostics);
- g_free (diagnostics);
- g_free (ciphertext);
- if (sign)
- pgp_forget_passphrase (ctx->session, context->priv->type,
- (char *) userid);
-
- return -1;
- }
-
- g_free (diagnostics);
-
- camel_stream_write (ostream, ciphertext, strlen (ciphertext));
- g_free (ciphertext);
-
- return 0;
-
- exception:
-
- g_byte_array_free (plaintext, TRUE);
-
- if (sign) {
- pass_free (passphrase);
- pgp_forget_passphrase (ctx->session, context->priv->type, (char *) userid);
- }
-
- return -1;
-}
-
-
-static int
-pgp_decrypt (CamelCipherContext *ctx, CamelStream *istream,
- CamelStream *ostream, CamelException *ex)
-{
- CamelPgpContext *context = CAMEL_PGP_CONTEXT (ctx);
- GByteArray *ciphertext;
- CamelStream *stream;
- char *argv[15];
- char *plaintext = NULL;
- int plainlen;
- char *diagnostics = NULL;
- char *passphrase = NULL;
- int passwd_fds[2];
- char passwd_fd[32];
- int retval, i;
-
- /* check for the now unsupported pgp 2.6.x type */
- if (context->priv->type == CAMEL_PGP_TYPE_PGP2) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- "PGP 2.6.x is no longer supported.");
- return -1;
- }
-
- /* get the ciphertext in a form we can use */
- ciphertext = g_byte_array_new ();
- stream = camel_stream_mem_new ();
- camel_stream_mem_set_byte_array (CAMEL_STREAM_MEM (stream), ciphertext);
- camel_stream_write_to_stream (istream, stream);
- camel_object_unref (CAMEL_OBJECT (stream));
-
- if (!ciphertext->len) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot decrypt this message: no ciphertext to decrypt"));
-
- goto exception;
- }
-
- passphrase = pgp_get_passphrase (ctx->session, context->priv->type, NULL);
- if (!passphrase) {
- camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
- _("Cannot decrypt this message: no password provided"));
-
- goto exception;
- }
-
- if (pipe (passwd_fds) < 0) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Cannot decrypt this message: couldn't create pipe to GPG/PGP: %s"),
- g_strerror (errno));
-
- goto exception;
- }
-
- i = 0;
- switch (context->priv->type) {
- case CAMEL_PGP_TYPE_GPG:
- argv[i++] = "gpg";
-
- argv[i++] = "--verbose";
- argv[i++] = "--no-secmem-warning";
- argv[i++] = "--no-greeting";
- argv[i++] = "--yes";
- argv[i++] = "--batch";
-
- if (!camel_session_is_online (ctx->session))
- argv[i++] = "--no-auto-key-retrieve";
-
- 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;
- break;
- case CAMEL_PGP_TYPE_PGP5:
- argv[i++] = "pgpv";
-
- argv[i++] = "-f";
- argv[i++] = "+batchmode=1";
-
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
- break;
- case CAMEL_PGP_TYPE_PGP2:
- case CAMEL_PGP_TYPE_PGP6:
- argv[i++] = "pgp";
-
- argv[i++] = "-f";
-
- sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
- putenv (passwd_fd);
- break;
- default:
- g_assert_not_reached ();
- break;
- }
-
- argv[i++] = NULL;
-
- retval = crypto_exec_with_passwd (context->priv->path, argv,
- ciphertext->data, ciphertext->len,
- passwd_fds, passphrase,
- &plaintext, &plainlen,
- &diagnostics);
-
- g_byte_array_free (ciphertext, TRUE);
- pass_free (passphrase);
-
- /* gpg returns '1' if it succeedes in decrypting but can't verify the signature */
- if (retval != 0 || (context->priv->type == CAMEL_PGP_TYPE_GPG && retval == 1) || !*plaintext) {
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, diagnostics);
- g_free (plaintext);
- g_free (diagnostics);
-
- pgp_forget_passphrase (ctx->session, context->priv->type, NULL);
-
- return -1;
- }
-
- g_free (diagnostics);
-
- camel_stream_write (ostream, plaintext, plainlen);
- g_free (plaintext);
-
- return 0;
-
- exception:
-
- g_byte_array_free (ciphertext, TRUE);
-
- if (passphrase) {
- pgp_forget_passphrase (ctx->session, context->priv->type, NULL);
- pass_free (passphrase);
- }
-
- return -1;
-}
-
-/* this has a 1:1 relationship to CamelCipherHash */
-static char *name_table[] = {
- "pgp-sha1", /* we use sha1 as the 'default' */
- "pgp-md2",
- "pgp-md5",
- "pgp-sha1",
- "pgp-ripemd160",
-};
-
-static const char *pgp_hash_to_id(CamelCipherContext *context, CamelCipherHash hash)
-{
- /* if we dont know, just use default? */
- if (hash > sizeof(name_table)/sizeof(name_table[0]))
- hash = CAMEL_CIPHER_HASH_DEFAULT;
-
- return name_table[hash];
-}
-
-static CamelCipherHash pgp_id_to_hash(CamelCipherContext *context, const char *id)
-{
- int i;
- unsigned char *tmpid, *o;
- const char *in;
- unsigned char c;
-
- if (id == NULL)
- return CAMEL_CIPHER_HASH_DEFAULT;
-
- tmpid = alloca(strlen(id)+1);
- in = id;
- o = tmpid;
- while ((c = (unsigned char)*in++))
- *o++ = tolower(c);
-
- for (i=1;i<sizeof(name_table)/sizeof(name_table[0]);i++) {
- if (!strcmp(name_table[i], tmpid))
- return i;
- }
-
- return CAMEL_CIPHER_HASH_DEFAULT;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-06 06:19:06 +0800