/*
- * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2003 Hiroyuki Yamamoto & the Sylpheed-Claws team
+ * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
+ * Copyright (C) 1999-2014 the Claws Mail team
*
* 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
+ * the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
+#include "claws-features.h"
#endif
#ifdef USE_GPGME
#include "defs.h"
#include <glib.h>
+#include <glib/gi18n.h>
#include <gpgme.h>
+#include <ctype.h>
+#include <errno.h>
#include "utils.h"
#include "privacy.h"
#include "procmime.h"
+#include "plugin.h"
+
#include "pgpmime.h"
-#include "sgpgme.h"
+#include <plugins/pgpcore/sgpgme.h>
+#include <plugins/pgpcore/prefs_gpg.h>
+#include <plugins/pgpcore/passphrase.h>
+#include <plugins/pgpcore/pgp_utils.h>
+
#include "prefs_common.h"
typedef struct _PrivacyDataPGP PrivacyDataPGP;
gboolean done_sigtest;
gboolean is_signed;
- GpgmeSigStat sigstatus;
- GpgmeCtx ctx;
+ gpgme_verify_result_t sigstatus;
+ gpgme_ctx_t ctx;
};
static PrivacySystem pgpmime_system;
static PrivacyDataPGP *pgpmime_new_privacydata()
{
PrivacyDataPGP *data;
+ gpgme_error_t err;
data = g_new0(PrivacyDataPGP, 1);
data->data.system = &pgpmime_system;
data->done_sigtest = FALSE;
data->is_signed = FALSE;
- data->sigstatus = GPGME_SIG_STAT_NONE;
- gpgme_new(&data->ctx);
+ data->sigstatus = NULL;
+ if ((err = gpgme_new(&data->ctx)) != GPG_ERR_NO_ERROR) {
+ g_warning(_("Couldn't initialize GPG context, %s"), gpgme_strerror(err));
+ return NULL;
+ }
return data;
}
static void pgpmime_free_privacydata(PrivacyData *_data)
{
PrivacyDataPGP *data = (PrivacyDataPGP *) _data;
-
+ gpgme_release(data->ctx);
g_free(data);
}
const gchar *protocol;
PrivacyDataPGP *data = NULL;
- g_return_val_if_fail(mimeinfo != NULL, FALSE);
+ cm_return_val_if_fail(mimeinfo != NULL, FALSE);
if (mimeinfo->privacy != NULL) {
data = (PrivacyDataPGP *) mimeinfo->privacy;
if (data->done_sigtest)
if (parent == NULL)
return FALSE;
if ((parent->type != MIMETYPE_MULTIPART) ||
- g_strcasecmp(parent->subtype, "signed"))
+ g_ascii_strcasecmp(parent->subtype, "signed"))
return FALSE;
protocol = procmime_mimeinfo_get_parameter(parent, "protocol");
- if ((protocol == NULL) || g_strcasecmp(protocol, "application/pgp-signature"))
+ if ((protocol == NULL) ||
+ (g_ascii_strcasecmp(protocol, "application/pgp-signature")))
return FALSE;
/* check if mimeinfo is the first child */
if (signature == NULL)
return FALSE;
if ((signature->type != MIMETYPE_APPLICATION) ||
- g_strcasecmp(signature->subtype, "pgp-signature"))
+ (g_ascii_strcasecmp(signature->subtype, "pgp-signature")))
return FALSE;
if (data == NULL) {
data = pgpmime_new_privacydata();
mimeinfo->privacy = (PrivacyData *) data;
}
- data->done_sigtest = TRUE;
- data->is_signed = TRUE;
+ if (data != NULL) {
+ data->done_sigtest = TRUE;
+ data->is_signed = TRUE;
+ }
- if (prefs_common.auto_check_signatures)
- pgpmime_check_signature(mimeinfo);
-
return TRUE;
}
-static gint pgpmime_check_signature(MimeInfo *mimeinfo)
+static gchar *get_canonical_content(FILE *fp, const gchar *boundary)
{
- PrivacyDataPGP *data;
- MimeInfo *parent, *signature;
- FILE *fp;
+ gchar *ret;
+ GString *textbuffer;
+ guint boundary_len;
gchar buf[BUFFSIZE];
- gchar *boundary;
- GString *textstr;
- gint boundary_len;
- GpgmeData sigdata, textdata;
-
- g_return_val_if_fail(mimeinfo != NULL, -1);
- g_return_val_if_fail(mimeinfo->privacy != NULL, -1);
- data = (PrivacyDataPGP *) mimeinfo->privacy;
-
- debug_print("Checking PGP/MIME signature\n");
- parent = procmime_mimeinfo_parent(mimeinfo);
-
- fp = fopen(parent->filename, "rb");
- g_return_val_if_fail(fp != NULL, SIGNATURE_INVALID);
-
- boundary = g_hash_table_lookup(parent->parameters, "boundary");
- if (!boundary)
- return 0;
boundary_len = strlen(boundary);
while (fgets(buf, sizeof(buf), fp) != NULL)
if (IS_BOUNDARY(buf, boundary, boundary_len))
break;
- textstr = g_string_new("");
+ textbuffer = g_string_new("");
while (fgets(buf, sizeof(buf), fp) != NULL) {
gchar *buf2;
break;
buf2 = canonicalize_str(buf);
- g_string_append(textstr, buf2);
+ g_string_append(textbuffer, buf2);
g_free(buf2);
}
- g_string_truncate(textstr, textstr->len - 2);
+ g_string_truncate(textbuffer, textbuffer->len - 2);
- gpgme_data_new_from_mem(&textdata, textstr->str, textstr->len, 0);
+ ret = textbuffer->str;
+ g_string_free(textbuffer, FALSE);
+
+ return ret;
+}
+
+static gint pgpmime_check_signature(MimeInfo *mimeinfo)
+{
+ PrivacyDataPGP *data;
+ MimeInfo *parent, *signature;
+ FILE *fp;
+ gchar *boundary;
+ gchar *textstr;
+ gpgme_data_t sigdata = NULL, textdata = NULL;
+ gpgme_error_t err;
+ cm_return_val_if_fail(mimeinfo != NULL, -1);
+ cm_return_val_if_fail(mimeinfo->privacy != NULL, -1);
+ data = (PrivacyDataPGP *) mimeinfo->privacy;
+ if ((err = gpgme_new(&data->ctx)) != GPG_ERR_NO_ERROR) {
+ debug_print(("Couldn't initialize GPG context, %s"), gpgme_strerror(err));
+ privacy_set_error(_("Couldn't initialize GPG context, %s"), gpgme_strerror(err));
+ return 0;
+ }
+
+
+ debug_print("Checking PGP/MIME signature\n");
+
+ err = gpgme_set_protocol(data->ctx, GPGME_PROTOCOL_OpenPGP);
+
+ if (err) {
+ debug_print ("gpgme_set_protocol failed: %s\n",
+ gpgme_strerror (err));
+ }
+ parent = procmime_mimeinfo_parent(mimeinfo);
+
+ fp = g_fopen(parent->data.filename, "rb");
+ cm_return_val_if_fail(fp != NULL, SIGNATURE_INVALID);
+
+ boundary = g_hash_table_lookup(parent->typeparameters, "boundary");
+ if (!boundary) {
+ privacy_set_error(_("Signature boundary not found."));
+ fclose(fp);
+ return 0;
+ }
+ textstr = get_canonical_content(fp, boundary);
+
+ err = gpgme_data_new_from_mem(&textdata, textstr, (size_t)strlen(textstr), 0);
+ if (err) {
+ debug_print ("gpgme_data_new_from_mem failed: %s\n",
+ gpgme_strerror (err));
+ }
signature = (MimeInfo *) mimeinfo->node->next->data;
sigdata = sgpgme_data_from_mimeinfo(signature);
- data->sigstatus =
- sgpgme_verify_signature (data->ctx, sigdata, textdata);
+ err = 0;
+ if (signature->encoding_type == ENC_BASE64) {
+ err = gpgme_data_set_encoding (sigdata, GPGME_DATA_ENCODING_BASE64);
+ }
+ if (err) {
+ debug_print ("gpgme_data_set_encoding failed: %s\n",
+ gpgme_strerror (err));
+ }
+
+ data->sigstatus =
+ sgpgme_verify_signature (data->ctx, sigdata, textdata, NULL);
+
gpgme_data_release(sigdata);
gpgme_data_release(textdata);
- g_string_free(textstr, TRUE);
+ g_free(textstr);
fclose(fp);
return 0;
{
PrivacyDataPGP *data = (PrivacyDataPGP *) mimeinfo->privacy;
- g_return_val_if_fail(data != NULL, SIGNATURE_INVALID);
+ cm_return_val_if_fail(data != NULL, SIGNATURE_INVALID);
return sgpgme_sigstat_gpgme_to_privacy(data->ctx, data->sigstatus);
}
{
PrivacyDataPGP *data = (PrivacyDataPGP *) mimeinfo->privacy;
- g_return_val_if_fail(data != NULL, g_strdup("Error"));
+ cm_return_val_if_fail(data != NULL, g_strdup("Error"));
return sgpgme_sigstat_info_short(data->ctx, data->sigstatus);
}
static gchar *pgpmime_get_sig_info_full(MimeInfo *mimeinfo)
{
PrivacyDataPGP *data = (PrivacyDataPGP *) mimeinfo->privacy;
-
- g_return_val_if_fail(data != NULL, g_strdup("Error"));
+
+ cm_return_val_if_fail(data != NULL, g_strdup("Error"));
return sgpgme_sigstat_info_full(data->ctx, data->sigstatus);
}
{
MimeInfo *tmpinfo;
const gchar *tmpstr;
-
+ const gchar *begin_indicator = "-----BEGIN PGP MESSAGE-----";
+ const gchar *end_indicator = "-----END PGP MESSAGE-----";
+ gchar *textdata;
+
if (mimeinfo->type != MIMETYPE_MULTIPART)
return FALSE;
- if (g_strcasecmp(mimeinfo->subtype, "encrypted"))
+ if (g_ascii_strcasecmp(mimeinfo->subtype, "encrypted"))
return FALSE;
tmpstr = procmime_mimeinfo_get_parameter(mimeinfo, "protocol");
- if ((tmpstr == NULL) || g_strcasecmp(tmpstr, "application/pgp-encrypted"))
+ if ((tmpstr == NULL) || g_ascii_strcasecmp(tmpstr, "application/pgp-encrypted"))
return FALSE;
if (g_node_n_children(mimeinfo->node) != 2)
return FALSE;
tmpinfo = (MimeInfo *) g_node_nth_child(mimeinfo->node, 0)->data;
if (tmpinfo->type != MIMETYPE_APPLICATION)
return FALSE;
- if (g_strcasecmp(tmpinfo->subtype, "pgp-encrypted"))
+ if (g_ascii_strcasecmp(tmpinfo->subtype, "pgp-encrypted"))
return FALSE;
tmpinfo = (MimeInfo *) g_node_nth_child(mimeinfo->node, 1)->data;
if (tmpinfo->type != MIMETYPE_APPLICATION)
return FALSE;
- if (g_strcasecmp(tmpinfo->subtype, "octet-stream"))
+ if (g_ascii_strcasecmp(tmpinfo->subtype, "octet-stream"))
+ return FALSE;
+
+ textdata = get_part_as_string(tmpinfo);
+ if (!textdata)
return FALSE;
+ if (!pgp_locate_armor_header(textdata, begin_indicator)) {
+ g_free(textdata);
+ return FALSE;
+ }
+ if (!pgp_locate_armor_header(textdata, end_indicator)) {
+ g_free(textdata);
+ return FALSE;
+ }
+
+ g_free(textdata);
+
return TRUE;
}
static MimeInfo *pgpmime_decrypt(MimeInfo *mimeinfo)
{
MimeInfo *encinfo, *decinfo, *parseinfo;
- GpgmeData cipher, plain;
+ gpgme_data_t cipher = NULL, plain = NULL;
static gint id = 0;
FILE *dstfp;
- gint nread;
gchar *fname;
- gchar buf[BUFFSIZE];
- GpgmeSigStat sigstat = 0;
+ gpgme_verify_result_t sigstat = NULL;
PrivacyDataPGP *data = NULL;
- GpgmeCtx ctx;
-
- if (gpgme_new(&ctx) != GPGME_No_Error)
+ gpgme_ctx_t ctx;
+ gchar *chars;
+ size_t len;
+ gpgme_error_t err;
+
+ if ((err = gpgme_new(&ctx)) != GPG_ERR_NO_ERROR) {
+ debug_print(("Couldn't initialize GPG context, %s"), gpgme_strerror(err));
+ privacy_set_error(_("Couldn't initialize GPG context, %s"), gpgme_strerror(err));
return NULL;
-
+ }
- g_return_val_if_fail(pgpmime_is_encrypted(mimeinfo), NULL);
+ cm_return_val_if_fail(pgpmime_is_encrypted(mimeinfo), NULL);
encinfo = (MimeInfo *) g_node_nth_child(mimeinfo->node, 1)->data;
plain = sgpgme_decrypt_verify(cipher, &sigstat, ctx);
gpgme_data_release(cipher);
- if (plain == NULL)
+ if (plain == NULL) {
+ debug_print("plain is null!\n");
+ gpgme_release(ctx);
return NULL;
-
+ }
+
fname = g_strdup_printf("%s%cplaintext.%08x",
get_mime_tmp_dir(), G_DIR_SEPARATOR, ++id);
- if ((dstfp = fopen(fname, "wb")) == NULL) {
+ if ((dstfp = g_fopen(fname, "wb")) == NULL) {
FILE_OP_ERROR(fname, "fopen");
+ privacy_set_error(_("Couldn't open decrypted file %s"), fname);
g_free(fname);
gpgme_data_release(plain);
+ gpgme_release(ctx);
+ debug_print("can't open!\n");
return NULL;
}
- fprintf(dstfp, "MIME-Version: 1.0\n");
- gpgme_data_rewind (plain);
- while (gpgme_data_read(plain, buf, sizeof(buf), &nread) == GPGME_No_Error) {
- fwrite (buf, nread, 1, dstfp);
+ if (fprintf(dstfp, "MIME-Version: 1.0\n") < 0) {
+ FILE_OP_ERROR(fname, "fprintf");
+ fclose(dstfp);
+ privacy_set_error(_("Couldn't write to decrypted file %s"), fname);
+ g_free(fname);
+ gpgme_data_release(plain);
+ gpgme_release(ctx);
+ debug_print("can't open!\n");
+ return NULL;
+ }
+
+ chars = sgpgme_data_release_and_get_mem(plain, &len);
+ if (len > 0) {
+ if (fwrite(chars, 1, len, dstfp) < len) {
+ FILE_OP_ERROR(fname, "fwrite");
+ g_free(chars);
+ fclose(dstfp);
+ privacy_set_error(_("Couldn't write to decrypted file %s"), fname);
+ g_free(fname);
+ gpgme_data_release(plain);
+ gpgme_release(ctx);
+ debug_print("can't open!\n");
+ return NULL;
+ }
+ }
+ g_free(chars);
+
+ if (fclose(dstfp) == EOF) {
+ FILE_OP_ERROR(fname, "fclose");
+ privacy_set_error(_("Couldn't close decrypted file %s"), fname);
+ g_free(fname);
+ gpgme_data_release(plain);
+ gpgme_release(ctx);
+ debug_print("can't open!\n");
+ return NULL;
}
- fclose(dstfp);
-
- gpgme_data_release(plain);
parseinfo = procmime_scan_file(fname);
g_free(fname);
- if (parseinfo == NULL)
+ if (parseinfo == NULL) {
+ gpgme_release(ctx);
+ privacy_set_error(_("Couldn't parse decrypted file."));
return NULL;
+ }
decinfo = g_node_first_child(parseinfo->node) != NULL ?
g_node_first_child(parseinfo->node)->data : NULL;
- if (decinfo == NULL)
+ if (decinfo == NULL) {
+ privacy_set_error(_("Couldn't parse decrypted file parts."));
+ gpgme_release(ctx);
return NULL;
+ }
g_node_unlink(decinfo->node);
procmime_mimeinfo_free_all(parseinfo);
- decinfo->tmpfile = TRUE;
+ decinfo->tmp = TRUE;
- if (sigstat != GPGME_SIG_STAT_NONE) {
+ if (sigstat != NULL && sigstat->signatures != NULL) {
if (decinfo->privacy != NULL) {
data = (PrivacyDataPGP *) decinfo->privacy;
} else {
data = pgpmime_new_privacydata();
decinfo->privacy = (PrivacyData *) data;
}
- data->done_sigtest = TRUE;
- data->is_signed = TRUE;
- data->sigstatus = sigstat;
- if (data->ctx)
- gpgme_release(data->ctx);
- data->ctx = ctx;
+ if (data != NULL) {
+ data->done_sigtest = TRUE;
+ data->is_signed = TRUE;
+ data->sigstatus = sigstat;
+ if (data->ctx)
+ gpgme_release(data->ctx);
+ data->ctx = ctx;
+ }
+ } else
+ gpgme_release(ctx);
+
+ return decinfo;
+}
+
+gboolean pgpmime_sign(MimeInfo *mimeinfo, PrefsAccount *account, const gchar *from_addr)
+{
+ MimeInfo *msgcontent, *sigmultipart, *newinfo;
+ gchar *textstr, *micalg = NULL;
+ FILE *fp;
+ gchar *boundary = NULL;
+ gchar *sigcontent;
+ gpgme_ctx_t ctx;
+ gpgme_data_t gpgtext, gpgsig;
+ gpgme_error_t err;
+ size_t len;
+ struct passphrase_cb_info_s info;
+ gpgme_sign_result_t result = NULL;
+ gchar *test_msg;
+
+ fp = my_tmpfile();
+ if (fp == NULL) {
+ privacy_set_error(_("Couldn't create temporary file: %s"), strerror(errno));
+ return FALSE;
}
+ procmime_write_mimeinfo(mimeinfo, fp);
+ rewind(fp);
+
+ /* read temporary file into memory */
+ test_msg = file_read_stream_to_str(fp);
+ fclose(fp);
+
+ memset (&info, 0, sizeof info);
+
+ /* remove content node from message */
+ msgcontent = (MimeInfo *) mimeinfo->node->children->data;
+ g_node_unlink(msgcontent->node);
+ /* create temporary multipart for content */
+ sigmultipart = procmime_mimeinfo_new();
+ sigmultipart->type = MIMETYPE_MULTIPART;
+ sigmultipart->subtype = g_strdup("signed");
- return decinfo;
+ do {
+ g_free(boundary);
+ boundary = generate_mime_boundary("Sig");
+ } while (strstr(test_msg, boundary) != NULL);
+
+ g_free(test_msg);
+
+ g_hash_table_insert(sigmultipart->typeparameters, g_strdup("boundary"),
+ g_strdup(boundary));
+ g_hash_table_insert(sigmultipart->typeparameters, g_strdup("protocol"),
+ g_strdup("application/pgp-signature"));
+ g_node_append(sigmultipart->node, msgcontent->node);
+ g_node_append(mimeinfo->node, sigmultipart->node);
+
+ /* write message content to temporary file */
+ fp = my_tmpfile();
+ if (fp == NULL) {
+ perror("my_tmpfile");
+ privacy_set_error(_("Couldn't create temporary file: %s"), strerror(errno));
+ return FALSE;
+ }
+ procmime_write_mimeinfo(sigmultipart, fp);
+ rewind(fp);
+
+ /* read temporary file into memory */
+ textstr = get_canonical_content(fp, boundary);
+
+ fclose(fp);
+
+ gpgme_data_new_from_mem(&gpgtext, textstr, (size_t)strlen(textstr), 0);
+ gpgme_data_new(&gpgsig);
+ if ((err = gpgme_new(&ctx)) != GPG_ERR_NO_ERROR) {
+ debug_print(("Couldn't initialize GPG context, %s"), gpgme_strerror(err));
+ privacy_set_error(_("Couldn't initialize GPG context, %s"), gpgme_strerror(err));
+ return FALSE;
+ }
+ gpgme_set_textmode(ctx, 1);
+ gpgme_set_armor(ctx, 1);
+ gpgme_signers_clear (ctx);
+
+ if (!sgpgme_setup_signers(ctx, account, from_addr)) {
+ gpgme_release(ctx);
+ return FALSE;
+ }
+
+ prefs_gpg_enable_agent(prefs_gpg_get_config()->use_gpg_agent);
+ if (getenv("GPG_AGENT_INFO") && prefs_gpg_get_config()->use_gpg_agent) {
+ debug_print("GPG_AGENT_INFO environment defined, running without passphrase callback\n");
+ } else {
+ info.c = ctx;
+ gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
+ }
+
+ err = gpgme_op_sign(ctx, gpgtext, gpgsig, GPGME_SIG_MODE_DETACH);
+ if (err != GPG_ERR_NO_ERROR) {
+ if (err == GPG_ERR_CANCELED) {
+ /* ignore cancelled signing */
+ privacy_reset_error();
+ debug_print("gpgme_op_sign cancelled\n");
+ } else {
+ privacy_set_error(_("Data signing failed, %s"), gpgme_strerror(err));
+ debug_print("gpgme_op_sign error : %x\n", err);
+ }
+ gpgme_release(ctx);
+ return FALSE;
+ }
+ result = gpgme_op_sign_result(ctx);
+ if (result && result->signatures) {
+ gpgme_new_signature_t sig = result->signatures;
+ if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
+ micalg = g_strdup_printf("pgp-%s", g_ascii_strdown(gpgme_hash_algo_name(
+ result->signatures->hash_algo),-1));
+ } else {
+ micalg = g_strdup(gpgme_hash_algo_name(
+ result->signatures->hash_algo));
+ }
+ while (sig) {
+ debug_print("valid signature: %s\n", sig->fpr);
+ sig = sig->next;
+ }
+ } else if (result && result->invalid_signers) {
+ gpgme_invalid_key_t invalid = result->invalid_signers;
+ while (invalid) {
+ g_warning("invalid signer: %s (%s)", invalid->fpr,
+ gpgme_strerror(invalid->reason));
+ privacy_set_error(_("Data signing failed due to invalid signer: %s"),
+ gpgme_strerror(invalid->reason));
+ invalid = invalid->next;
+ }
+ gpgme_release(ctx);
+ return FALSE;
+ } else {
+ /* can't get result (maybe no signing key?) */
+ debug_print("gpgme_op_sign_result error\n");
+ privacy_set_error(_("Data signing failed, no results."));
+ gpgme_release(ctx);
+ return FALSE;
+ }
+
+ sigcontent = sgpgme_data_release_and_get_mem(gpgsig, &len);
+ gpgme_data_release(gpgtext);
+ g_free(textstr);
+
+ if (sigcontent == NULL || len <= 0) {
+ g_warning("sgpgme_data_release_and_get_mem failed");
+ privacy_set_error(_("Data signing failed, no contents."));
+ g_free(micalg);
+ g_free(sigcontent);
+ return FALSE;
+ }
+
+ /* add signature */
+ g_hash_table_insert(sigmultipart->typeparameters, g_strdup("micalg"),
+ micalg);
+
+ newinfo = procmime_mimeinfo_new();
+ newinfo->type = MIMETYPE_APPLICATION;
+ newinfo->subtype = g_strdup("pgp-signature");
+ newinfo->description = g_strdup(_("OpenPGP digital signature"));
+ newinfo->content = MIMECONTENT_MEM;
+ newinfo->data.mem = g_malloc(len + 1);
+ g_memmove(newinfo->data.mem, sigcontent, len);
+ newinfo->data.mem[len] = '\0';
+ g_node_append(sigmultipart->node, newinfo->node);
+
+ g_free(sigcontent);
+ gpgme_release(ctx);
+
+ return TRUE;
+}
+gchar *pgpmime_get_encrypt_data(GSList *recp_names)
+{
+ return sgpgme_get_encrypt_data(recp_names, GPGME_PROTOCOL_OpenPGP);
+}
+
+static const gchar *pgpmime_get_encrypt_warning(void)
+{
+ if (prefs_gpg_should_skip_encryption_warning(pgpmime_system.id))
+ return NULL;
+ else
+ return _("Please note that email headers, like Subject, "
+ "are not encrypted by the PGP/Mime system.");
+}
+
+static void pgpmime_inhibit_encrypt_warning(gboolean inhibit)
+{
+ if (inhibit)
+ prefs_gpg_add_skip_encryption_warning(pgpmime_system.id);
+ else
+ prefs_gpg_remove_skip_encryption_warning(pgpmime_system.id);
+}
+
+gboolean pgpmime_encrypt(MimeInfo *mimeinfo, const gchar *encrypt_data)
+{
+ MimeInfo *msgcontent, *encmultipart, *newinfo;
+ FILE *fp;
+ gchar *boundary, *enccontent;
+ size_t len;
+ gchar *textstr;
+ gpgme_data_t gpgtext = NULL, gpgenc = NULL;
+ gpgme_ctx_t ctx = NULL;
+ gpgme_key_t *kset = NULL;
+ gchar **fprs = g_strsplit(encrypt_data, " ", -1);
+ gint i = 0;
+ gpgme_error_t err;
+
+ while (fprs[i] && strlen(fprs[i])) {
+ i++;
+ }
+
+ kset = g_malloc(sizeof(gpgme_key_t)*(i+1));
+ memset(kset, 0, sizeof(gpgme_key_t)*(i+1));
+ if ((err = gpgme_new(&ctx)) != GPG_ERR_NO_ERROR) {
+ debug_print(("Couldn't initialize GPG context, %s"), gpgme_strerror(err));
+ privacy_set_error(_("Couldn't initialize GPG context, %s"), gpgme_strerror(err));
+ g_free(kset);
+ return FALSE;
+ }
+ i = 0;
+ while (fprs[i] && strlen(fprs[i])) {
+ gpgme_key_t key;
+ err = gpgme_get_key(ctx, fprs[i], &key, 0);
+ if (err) {
+ debug_print("can't add key '%s'[%d] (%s)\n", fprs[i],i, gpgme_strerror(err));
+ privacy_set_error(_("Couldn't add GPG key %s, %s"), fprs[i], gpgme_strerror(err));
+ g_free(kset);
+ return FALSE;
+ }
+ debug_print("found %s at %d\n", fprs[i], i);
+ kset[i] = key;
+ i++;
+ }
+
+ debug_print("Encrypting message content\n");
+
+ /* remove content node from message */
+ msgcontent = (MimeInfo *) mimeinfo->node->children->data;
+ g_node_unlink(msgcontent->node);
+
+ /* create temporary multipart for content */
+ encmultipart = procmime_mimeinfo_new();
+ encmultipart->type = MIMETYPE_MULTIPART;
+ encmultipart->subtype = g_strdup("encrypted");
+ boundary = generate_mime_boundary("Encrypt");
+ g_hash_table_insert(encmultipart->typeparameters, g_strdup("boundary"),
+ g_strdup(boundary));
+ g_hash_table_insert(encmultipart->typeparameters, g_strdup("protocol"),
+ g_strdup("application/pgp-encrypted"));
+ g_node_append(encmultipart->node, msgcontent->node);
+
+ /* write message content to temporary file */
+ fp = my_tmpfile();
+ if (fp == NULL) {
+ privacy_set_error(_("Couldn't create temporary file, %s"), strerror(errno));
+ g_free(kset);
+ return FALSE;
+ }
+ procmime_write_mimeinfo(encmultipart, fp);
+ rewind(fp);
+
+ /* read temporary file into memory */
+ textstr = get_canonical_content(fp, boundary);
+
+ fclose(fp);
+
+ /* encrypt data */
+ gpgme_data_new_from_mem(&gpgtext, textstr, (size_t)strlen(textstr), 0);
+ gpgme_data_new(&gpgenc);
+ gpgme_set_armor(ctx, 1);
+ cm_gpgme_data_rewind(gpgtext);
+
+ err = gpgme_op_encrypt(ctx, kset, GPGME_ENCRYPT_ALWAYS_TRUST, gpgtext, gpgenc);
+
+ enccontent = sgpgme_data_release_and_get_mem(gpgenc, &len);
+ gpgme_data_release(gpgtext);
+ g_free(textstr);
+ g_free(kset);
+
+ if (enccontent == NULL || len <= 0) {
+ g_warning("sgpgme_data_release_and_get_mem failed");
+ privacy_set_error(_("Encryption failed, %s"), gpgme_strerror(err));
+ gpgme_release(ctx);
+ g_free(enccontent);
+ return FALSE;
+ }
+
+ /* create encrypted multipart */
+ g_node_unlink(msgcontent->node);
+ procmime_mimeinfo_free_all(msgcontent);
+ g_node_append(mimeinfo->node, encmultipart->node);
+
+ newinfo = procmime_mimeinfo_new();
+ newinfo->type = MIMETYPE_APPLICATION;
+ newinfo->subtype = g_strdup("pgp-encrypted");
+ newinfo->content = MIMECONTENT_MEM;
+ newinfo->data.mem = g_strdup("Version: 1\n");
+ g_node_append(encmultipart->node, newinfo->node);
+
+ newinfo = procmime_mimeinfo_new();
+ newinfo->type = MIMETYPE_APPLICATION;
+ newinfo->subtype = g_strdup("octet-stream");
+ newinfo->content = MIMECONTENT_MEM;
+ newinfo->data.mem = g_malloc(len + 1);
+ g_memmove(newinfo->data.mem, enccontent, len);
+ newinfo->data.mem[len] = '\0';
+ g_node_append(encmultipart->node, newinfo->node);
+
+ g_free(enccontent);
+ gpgme_release(ctx);
+
+ return TRUE;
}
static PrivacySystem pgpmime_system = {
"pgpmime", /* id */
- "PGP/Mime", /* name */
+ "PGP MIME", /* name */
pgpmime_free_privacydata, /* free_privacydata */
pgpmime_is_encrypted, /* is_encrypted(MimeInfo *) */
pgpmime_decrypt, /* decrypt(MimeInfo *) */
+
+ TRUE,
+ pgpmime_sign,
+
+ TRUE,
+ pgpmime_get_encrypt_data,
+ pgpmime_encrypt,
+ pgpmime_get_encrypt_warning,
+ pgpmime_inhibit_encrypt_warning,
+ prefs_gpg_auto_check_signatures,
};
void pgpmime_init()
privacy_unregister_system(&pgpmime_system);
}
+struct PluginFeature *plugin_provides(void)
+{
+ static struct PluginFeature features[] =
+ { {PLUGIN_PRIVACY, N_("PGP/Mime")},
+ {PLUGIN_NOTHING, NULL}};
+ return features;
+}
#endif /* USE_GPGME */
projects / claws.git / blobdiff