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authorJeffrey Stedfast <fejj@helixcode.com>2000-12-16 07:05:55 +0800
committerJeffrey Stedfast <fejj@src.gnome.org>2000-12-16 07:05:55 +0800
commit96c13f461a2aa25578b766c56a895791108171f5 (patch)
tree93e3a995bf620854a80d25f215a19395e3edbd9f
parent7fbf92b1d677fdb27942e3e5e5b99577f0276275 (diff)
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New callback to handle multipart/signed parts. (decode_pgp): Update to
2000-12-15 Jeffrey Stedfast <fejj@helixcode.com> * mail-format.c (handle_multipart_signed): New callback to handle multipart/signed parts. (decode_pgp): Update to account for the cipherlen argument needed for openpgp_decrypt. (is_rfc2015): Removed as we now have a better version in mail-crypto. (handle_multipart_encrypted): Updated to use the PGP/MIME utility functions. * mail-crypto.c (mail_crypto_openpgp_decrypt): Don't check (!*plaintext) as it could be a binary stream. Now also takes a cipherlen argument. (mail_crypto_openpgp_sign): New function. (pgp_mime_part_sign): New function to replace a mime part with the pgp signed equivalent. (pgp_mime_part_encrypt): New function to replace a mime part with the pgp encrypted equivalent. (pgp_mime_part_decrypt): New function to decrypt a pgp encrypted mime part (like from pgp_mime_part_encrypt) and replace it. (is_rfc2015_signed): New function to determine if a mime part is an rfc2015 signed part. (is_rfc2015_encrypted): New function to determine if a mime part is an rfc2015 encrypted part. (mail_crypto_openpgp_verify): New openpgp function to verify a signature. svn path=/trunk/; revision=7056
-rw-r--r--mail/ChangeLog28
-rw-r--r--mail/mail-crypto.c674
-rw-r--r--mail/mail-crypto.h33
-rw-r--r--mail/mail-format.c124
4 files changed, 766 insertions, 93 deletions
diff --git a/mail/ChangeLog b/mail/ChangeLog
index 0108799e21..1e8079c66d 100644
--- a/mail/ChangeLog
+++ b/mail/ChangeLog
@@ -1,3 +1,31 @@
+2000-12-15 Jeffrey Stedfast <fejj@helixcode.com>
+
+ * mail-format.c (handle_multipart_signed): New callback to handle
+ multipart/signed parts.
+ (decode_pgp): Update to account for the cipherlen argument needed
+ for openpgp_decrypt.
+ (is_rfc2015): Removed as we now have a better version in
+ mail-crypto.
+ (handle_multipart_encrypted): Updated to use the PGP/MIME utility
+ functions.
+
+ * mail-crypto.c (mail_crypto_openpgp_decrypt): Don't check
+ (!*plaintext) as it could be a binary stream. Now also takes a
+ cipherlen argument.
+ (mail_crypto_openpgp_sign): New function.
+ (pgp_mime_part_sign): New function to replace a mime part with the
+ pgp signed equivalent.
+ (pgp_mime_part_encrypt): New function to replace a mime part with
+ the pgp encrypted equivalent.
+ (pgp_mime_part_decrypt): New function to decrypt a pgp encrypted
+ mime part (like from pgp_mime_part_encrypt) and replace it.
+ (is_rfc2015_signed): New function to determine if a mime part is
+ an rfc2015 signed part.
+ (is_rfc2015_encrypted): New function to determine if a mime part
+ is an rfc2015 encrypted part.
+ (mail_crypto_openpgp_verify): New openpgp function to verify a
+ signature.
+
2000-12-14 Christopher James Lahey <clahey@helixcode.com>
* mail-threads.c (update_active_views): Unref the iterator when
diff --git a/mail/mail-crypto.c b/mail/mail-crypto.c
index de866bcda3..a013b72878 100644
--- a/mail/mail-crypto.c
+++ b/mail/mail-crypto.c
@@ -57,6 +57,8 @@
#include <unistd.h>
#include <signal.h>
+#include <camel/camel-mime-filter-from.h>
+
static int
cleanup_child (pid_t child)
{
@@ -338,7 +340,8 @@ crypto_exec_with_passwd (const char *path, char *argv[], const char *input, int
* the case that the cleartext is a binary stream.
**/
char *
-mail_crypto_openpgp_decrypt (const char *ciphertext, int *outlen, CamelException *ex)
+mail_crypto_openpgp_decrypt (const char *ciphertext, int cipherlen,
+ int *outlen, CamelException *ex)
{
int retval, i;
char *path, *argv[12];
@@ -398,14 +401,17 @@ mail_crypto_openpgp_decrypt (const char *ciphertext, int *outlen, CamelException
putenv (passwd_fd);
#endif
argv[i++] = NULL;
-
+
+ /* initialize outlen */
+ *outlen = 0;
+
retval = crypto_exec_with_passwd (path, argv,
- ciphertext, strlen (ciphertext),
+ ciphertext, cipherlen,
passwd_fds, passphrase,
&plaintext, outlen,
&diagnostics);
- if (retval != 0 || !*plaintext) {
+ if (retval != 0 || *outlen == 0) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
"%s", diagnostics);
g_free (plaintext);
@@ -599,15 +605,15 @@ mail_crypto_openpgp_encrypt (const char *in, int inlen,
* @plaintext: text to sign
* @userid: user id to sign with
* @hash: Preferred hash function (md5 or sha1)
- * @detach: Specify whether or not to generate a detached clearsign.
* @ex: a CamelException
*
* Clearsigns the plaintext using the user id
**/
char *
-mail_crypto_openpgp_clearsign (const char *plaintext, const char *userid,
- PgpHashType hash, gboolean detach,
+mail_crypto_openpgp_clearsign (const char *plaintext,
+ const char *userid,
+ PgpHashType hash,
CamelException *ex)
{
int retval;
@@ -661,9 +667,6 @@ mail_crypto_openpgp_clearsign (const char *plaintext, const char *userid,
argv[i++] = "--clearsign";
- if (detach)
- argv[i++] = "-b";
-
if (hash_str) {
argv[i++] = "--digest-algo";
argv[i++] = hash_str;
@@ -692,9 +695,6 @@ mail_crypto_openpgp_clearsign (const char *plaintext, const char *userid,
argv[i++] = "pgps";
- if (detach)
- argv[i++] = "-b";
-
if (userid) {
argv[i++] = "-u";
argv[i++] = (char *) userid;
@@ -710,7 +710,7 @@ mail_crypto_openpgp_clearsign (const char *plaintext, const char *userid,
sprintf (passwd_fd, "PGPPASSFD=%d", passwd_fds[0]);
putenv (passwd_fd);
#else
- /* FIXME: modify to respect hash and detach */
+ /* FIXME: modify to respect hash */
path = PGP_PATH;
argv[i++] = "pgp";
@@ -741,7 +741,653 @@ mail_crypto_openpgp_clearsign (const char *plaintext, const char *userid,
}
g_free (diagnostics);
+
return ciphertext;
}
+
+/**
+ * mail_crypto_openpgp_sign:
+ * @in: input data to sign
+ * @inlen: length of input data
+ * @userid: userid to sign with
+ * @hash: preferred hash type (md5 or sha1)
+ * @ex: exception
+ *
+ * Returns an allocated string containing the detached signature using
+ * the preferred hash.
+ **/
+char *
+mail_crypto_openpgp_sign (const char *in, int inlen, const char *userid,
+ PgpHashType hash, CamelException *ex)
+{
+ char *argv[20];
+ char *cyphertext = NULL;
+ char *diagnostics = NULL;
+ char *passphrase = NULL;
+ char *hash_str = NULL;
+ char *path;
+ int passwd_fds[2];
+ char passwd_fd[32];
+ int retval, i;
+
+
+#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) {
+ g_free (passphrase);
+ camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+ _("Couldn't create pipe to GPG/PGP: %s"),
+ g_strerror (errno));
+ return NULL;
+ }
+
+ switch (hash) {
+ case PGP_HASH_TYPE_MD5:
+ hash_str = "MD5";
+ break;
+ case PGP_HASH_TYPE_SHA1:
+ hash_str = "SHA1";
+ break;
+ default:
+ hash_str = NULL;
+ }
+
+ i = 0;
+#if defined(GPG_PATH)
+ path = GPG_PATH;
+ 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++] = "--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;
+
+ /* FIXME: respect hash */
+ argv[i++] = "pgps";
+
+ if (userid) {
+ argv[i++] = "-u";
+ argv[i++] = (char *) userid;
+ }
+
+ argv[i++] = "-b";
+ 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;
+
+ /* FIXME: needs to respect hash and also return only the detached sig */
+ argv[i++] = "pgp";
+
+ if (userid) {
+ argv[i++] = "-u";
+ argv[i++] = (char *) userid;
+ }
+
+ argv[i++] = "-f";
+ 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,
+ in, inlen,
+ passwd_fds, passphrase,
+ &cyphertext, NULL,
+ &diagnostics);
+
+ g_free (passphrase);
+
+ if (retval != 0 || !*cyphertext) {
+ camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+ "%s", diagnostics);
+ g_free (cyphertext);
+ cyphertext = NULL;
+ }
+
+ g_free (diagnostics);
+
+ return cyphertext;
+}
+
+gboolean
+mail_crypto_openpgp_verify (const char *in, int inlen, const char *sigin, int siglen, CamelException *ex)
+{
+ char *argv[20];
+ char *cleartext = NULL;
+ char *diagnostics = NULL;
+ char *path;
+ int passwd_fds[2];
+ char passwd_fd[32];
+ char *tmp = "/tmp/mail-crypto-XXXXXX";
+ int retval, i, clearlen;
+ gboolean valid = TRUE;
+
+
+#ifndef PGP_PROGRAM
+ camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+ _("No GPG/PGP program available."));
+ return FALSE;
+#endif
+
+ if (pipe (passwd_fds) < 0) {
+ camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+ _("Couldn't create pipe to GPG/PGP: %s"),
+ g_strerror (errno));
+ return FALSE;
+ }
+
+ i = 0;
+#if defined(GPG_PATH)
+ path = GPG_PATH;
+
+ argv[i++] = "gpg";
+
+ argv[i++] = "--verify";
+
+ if (sigin != NULL && siglen) {
+ /* We are going to verify a detached signature so save
+ the signature to a temp file and write the data to
+ verify to stdin */
+ int fd;
+
+ fd = mkstemp (tmp);
+ if (fd == -1) {
+ camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+ _("Couldn't create temp file: %s"),
+ g_strerror (errno));
+ return FALSE;
+ }
+
+ write (fd, sigin, siglen);
+ close (fd);
+
+ argv[i++] = tmp;
+ argv[i++] = "-";
+ } else {
+ /* We are going to verify using stdin */
+ argv[i++] = "-";
+ }
+
+ argv[i++] = "--verbose";
+ argv[i++] = "--yes";
+ argv[i++] = "--batch";
+
+ argv[i++] = "--output";
+ argv[i++] = "-"; /* output to stdout */
+#elif defined (PGP5_PATH)
+ path = PGP5_PATH;
+
+ argv[i++] = "pgpv";
+#else
+ path = PGP_PATH;
+
+ argv[i++] = "pgp";
+#endif
+
+ argv[i++] = NULL;
+
+ clearlen = 0;
+ retval = crypto_exec_with_passwd (path, argv,
+ in, inlen,
+ passwd_fds, NULL,
+ &cleartext, &clearlen,
+ &diagnostics);
+
+ /* FIXME: maybe we should always set an exception? */
+ if (retval != 0 || clearlen == 0) {
+ camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
+ "%s", diagnostics);
+ valid = FALSE;
+ }
+
+ g_free (diagnostics);
+ g_free (cleartext);
+
+ return valid;
+}
+
+/** rfc2015 stuff *******************************/
+
+gboolean
+is_rfc2015_signed (CamelMimePart *mime_part)
+{
+ CamelDataWrapper *wrapper;
+ CamelMultipart *mp;
+ CamelMimePart *part;
+ GMimeContentField *type;
+ const gchar *param;
+ int nparts;
+
+ /* check that we have a multipart/signed */
+ type = camel_mime_part_get_content_type (mime_part);
+ if (!gmime_content_field_is_type (type, "multipart", "signed"))
+ return FALSE;
+
+ /* check that we have a protocol param with the value: "application/pgp-signed" */
+ param = gmime_content_field_get_parameter (type, "protocol");
+ if (!param || g_strcasecmp (param, "\"application/pgp-signed\""))
+ return FALSE;
+
+ /* check that we have exactly 2 subparts */
+ wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (mime_part));
+ mp = CAMEL_MULTIPART (wrapper);
+ nparts = camel_multipart_get_number (mp);
+ if (nparts != 2)
+ return FALSE;
+
+ /* The first part may be of any type except for
+ * application/pgp-signature - check it. */
+ part = camel_multipart_get_part (mp, 0);
+ type = camel_mime_part_get_content_type (part);
+ if (gmime_content_field_is_type (type, "application","pgp-signature"))
+ return FALSE;
+
+ /* The second part should be application/pgp-signature. */
+ part = camel_multipart_get_part (mp, 1);
+ type = camel_mime_part_get_content_type (part);
+ if (!gmime_content_field_is_type (type, "application","pgp-siganture"))
+ return FALSE;
+
+ /* FIXME: Implement multisig stuff */
+
+ return TRUE;
+}
+
+gboolean
+is_rfc2015_encrypted (CamelMimePart *mime_part)
+{
+ CamelDataWrapper *wrapper;
+ CamelMultipart *mp;
+ CamelMimePart *part;
+ GMimeContentField *type;
+ const gchar *param;
+ int nparts;
+
+ /* check that we have a multipart/encrypted */
+ type = camel_mime_part_get_content_type (mime_part);
+ if (!gmime_content_field_is_type (type, "multipart", "encrypted"))
+ return FALSE;
+
+ /* check that we have a protocol param with the value: "application/pgp-encrypted" */
+ param = gmime_content_field_get_parameter (type, "protocol");
+ if (!param || g_strcasecmp (param, "\"application/pgp-encrypted\""))
+ return FALSE;
+
+ /* check that we have at least 2 subparts */
+ wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (mime_part));
+ mp = CAMEL_MULTIPART (wrapper);
+ nparts = camel_multipart_get_number (mp);
+ if (nparts < 2)
+ return FALSE;
+
+ /* The first part should be application/pgp-encrypted */
+ part = camel_multipart_get_part (mp, 0);
+ type = camel_mime_part_get_content_type (part);
+ if (!gmime_content_field_is_type (type, "application","pgp-encrypted"))
+ return FALSE;
+
+ /* The second part should be application/octet-stream - this
+ is the one we care most about */
+ part = camel_multipart_get_part (mp, 1);
+ type = camel_mime_part_get_content_type (part);
+ if (!gmime_content_field_is_type (type, "application","octet-stream"))
+ return FALSE;
+
+ return TRUE;
+}
+
+/**
+ * pgp_mime_part_sign:
+ * @mime_part: a MIME part that will be replaced by a pgp signed part
+ * @userid: userid to sign with
+ * @hash: one of PGP_HASH_TYPE_MD5 or PGP_HASH_TYPE_SHA1
+ * @ex: exception which will be set if there are any errors.
+ *
+ * Constructs a PGP/MIME multipart in compliance with rfc2015 and
+ * replaces #part with the generated multipart/signed. On failure,
+ * #ex will be set and #part will remain untouched.
+ **/
+void
+pgp_mime_part_sign (CamelMimePart **mime_part, const gchar *userid, PgpHashType hash, CamelException *ex)
+{
+ CamelMimePart *part, *signed_part;
+ CamelMultipart *multipart;
+ CamelMimePartEncodingType encoding;
+ GMimeContentField *mime_type;
+ CamelStreamFilter *filtered_stream;
+ CamelMimeFilter *crlf_filter, *from_filter;
+ CamelStream *stream;
+ GByteArray *array;
+ gchar *cleartext, *signature;
+ gchar *hash_type;
+ gint clearlen;
+
+ g_return_if_fail (*mime_part != NULL);
+ g_return_if_fail (userid != NULL);
+ g_return_if_fail (hash != PGP_HASH_TYPE_NONE);
+
+ part = *mime_part;
+ encoding = camel_mime_part_get_encoding (part);
+
+ /* the encoding should really be QP or Base64 */
+ if (encoding != CAMEL_MIME_PART_ENCODING_BASE64)
+ camel_mime_part_set_encoding (part, CAMEL_MIME_PART_ENCODING_QUOTEDPRINTABLE);
+
+ /* get the cleartext */
+ array = g_byte_array_new ();
+ stream = camel_stream_mem_new_with_byte_array (array);
+ crlf_filter = camel_mime_filter_crlf_new (CAMEL_MIME_FILTER_CRLF_ENCODE,
+ CAMEL_MIME_FILTER_CRLF_MODE_CRLF_ONLY);
+ from_filter = CAMEL_MIME_FILTER (camel_mime_filter_from_new ());
+ filtered_stream = camel_stream_filter_new_with_stream (stream);
+ camel_stream_filter_add (filtered_stream, CAMEL_MIME_FILTER (crlf_filter));
+ camel_stream_filter_add (filtered_stream, CAMEL_MIME_FILTER (from_filter));
+ camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (part), CAMEL_STREAM (filtered_stream));
+ camel_object_unref (CAMEL_OBJECT (filtered_stream));
+ camel_object_unref (CAMEL_OBJECT (stream));
+ cleartext = array->data;
+ clearlen = array->len;
+
+ /* get the signature */
+ signature = mail_crypto_openpgp_sign (cleartext, clearlen, userid, hash, ex);
+ g_byte_array_free (array, TRUE);
+ if (camel_exception_is_set (ex)) {
+ /* restore the original encoding */
+ camel_mime_part_set_encoding (part, encoding);
+ return;
+ }
+
+ /* construct the pgp-signature mime part */
+ fprintf (stderr, "signature:\n%s\n", signature);
+ signed_part = camel_mime_part_new ();
+ camel_mime_part_set_content (signed_part, signature, strlen (signature),
+ "application/pgp-signature");
+ g_free (signature);
+ camel_mime_part_set_encoding (signed_part, CAMEL_MIME_PART_ENCODING_DEFAULT);
+
+ /* construct the container multipart/signed */
+ multipart = camel_multipart_new ();
+ camel_data_wrapper_set_mime_type (CAMEL_DATA_WRAPPER (multipart),
+ "multipart/signed");
+ switch (hash) {
+ case PGP_HASH_TYPE_MD5:
+ hash_type = "pgp-md5";
+ break;
+ case PGP_HASH_TYPE_SHA1:
+ hash_type = "pgp-sha1";
+ break;
+ default:
+ hash_type = NULL;
+ }
+ mime_type = camel_data_wrapper_get_mime_type_field (CAMEL_DATA_WRAPPER (multipart));
+ gmime_content_field_set_parameter (mime_type, "micalg", hash_type);
+ gmime_content_field_set_parameter (mime_type, "protocol", "application/pgp-signature");
+ camel_multipart_set_boundary (multipart, NULL);
+
+ /* add the parts to the multipart */
+ camel_multipart_add_part (multipart, part);
+ camel_object_unref (CAMEL_OBJECT (part));
+ camel_multipart_add_part (multipart, signed_part);
+ camel_object_unref (CAMEL_OBJECT (signed_part));
+
+ /* replace the input part with the output part */
+ *mime_part = camel_mime_part_new ();
+ camel_medium_set_content_object (CAMEL_MEDIUM (*mime_part),
+ CAMEL_DATA_WRAPPER (multipart));
+ camel_object_unref (CAMEL_OBJECT (multipart));
+}
+
+
+/**
+ * pgp_mime_part_verify:
+ * @mime_part: a multipart/signed MIME Part
+ * @ex: exception
+ *
+ * Returns TRUE if the signature is valid otherwise returns
+ * FALSE. Note: you may want to check the exception if it fails as
+ * there may be useful information to give to the user; example:
+ * verification may have failed merely because the user doesn't have
+ * the sender's key on her system.
+ **/
+gboolean
+pgp_mime_part_verify (CamelMimePart *mime_part, CamelException *ex)
+{
+ CamelDataWrapper *wrapper;
+ CamelMultipart *multipart;
+ CamelMimePart *part, *sigpart;
+ GByteArray *content, *sig;
+ CamelStreamFilter *filtered_stream;
+ CamelMimeFilter *crlf_filter;
+ CamelStream *stream;
+ gboolean valid = FALSE;
+
+ g_return_val_if_fail (mime_part != NULL, FALSE);
+
+ if (!is_rfc2015_signed (mime_part))
+ return FALSE;
+
+ wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (mime_part));
+ multipart = CAMEL_MULTIPART (wrapper);
+
+ /* get the plain part */
+ part = camel_multipart_get_part (multipart, 0);
+ content = g_byte_array_new ();
+ stream = camel_stream_mem_new_with_byte_array (content);
+ crlf_filter = camel_mime_filter_crlf_new (CAMEL_MIME_FILTER_CRLF_ENCODE,
+ CAMEL_MIME_FILTER_CRLF_MODE_CRLF_ONLY);
+ filtered_stream = camel_stream_filter_new_with_stream (stream);
+ camel_stream_filter_add (filtered_stream, CAMEL_MIME_FILTER (crlf_filter));
+ camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (part), CAMEL_STREAM (filtered_stream));
+ camel_object_unref (CAMEL_OBJECT (filtered_stream));
+ camel_object_unref (CAMEL_OBJECT (stream));
+
+ /* get the signed part */
+ sigpart = camel_multipart_get_part (multipart, 1);
+ sig = g_byte_array_new ();
+ stream = camel_stream_mem_new_with_byte_array (sig);
+ camel_data_wrapper_write_to_stream (camel_medium_get_content_object (CAMEL_MEDIUM (sigpart)), stream);
+ camel_object_unref (CAMEL_OBJECT (stream));
+
+ /* verify */
+ valid = mail_crypto_openpgp_verify (content->data, content->len,
+ sig->data, sig->len, ex);
+
+ g_byte_array_free (content, TRUE);
+ g_byte_array_free (sig, TRUE);
+
+ return valid;
+}
+
+
+/**
+ * pgp_mime_part_encrypt:
+ * @mime_part: a MIME part that will be replaced by a pgp encrypted part
+ * @recipients: list of recipient PGP Key IDs
+ * @ex: exception which will be set if there are any errors.
+ *
+ * Constructs a PGP/MIME multipart in compliance with rfc2015 and
+ * replaces #mime_part with the generated multipart/signed. On failure,
+ * #ex will be set and #part will remain untouched.
+ **/
+void
+pgp_mime_part_encrypt (CamelMimePart **mime_part, const GPtrArray *recipients, CamelException *ex)
+{
+ CamelMultipart *multipart;
+ CamelMimePart *part, *version_part, *encrypted_part;
+ GMimeContentField *mime_type;
+ CamelStream *stream;
+ GByteArray *contents;
+ gchar *ciphertext;
+
+ g_return_if_fail (*mime_part != NULL);
+ g_return_if_fail (recipients != NULL);
+
+ part = *mime_part;
+
+ /* get the contents */
+ contents = g_byte_array_new ();
+ stream = camel_stream_mem_new_with_byte_array (contents);
+ camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (part), stream);
+ camel_object_unref (CAMEL_OBJECT (stream));
+
+ /* pgp encrypt */
+ ciphertext = mail_crypto_openpgp_encrypt (contents->data,
+ contents->len,
+ recipients, FALSE, NULL, ex);
+ if (camel_exception_is_set (ex))
+ return;
+
+ /* construct the version part */
+ version_part = camel_mime_part_new ();
+ camel_mime_part_set_encoding (version_part, CAMEL_MIME_PART_ENCODING_7BIT);
+ camel_mime_part_set_content (version_part, "Version: 1", strlen ("Version: 1"),
+ "application/pgp-encrypted");
+
+ /* construct the pgp-encrypted mime part */
+ encrypted_part = camel_mime_part_new ();
+ camel_mime_part_set_encoding (encrypted_part, CAMEL_MIME_PART_ENCODING_7BIT);
+ camel_mime_part_set_content (encrypted_part, ciphertext, strlen (ciphertext),
+ "application/octet-stream");
+ g_free (ciphertext);
+
+ /* construct the container multipart/signed */
+ multipart = camel_multipart_new ();
+ camel_data_wrapper_set_mime_type (CAMEL_DATA_WRAPPER (multipart),
+ "multipart/encrypted");
+ camel_multipart_set_boundary (multipart, NULL);
+ mime_type = camel_data_wrapper_get_mime_type_field (CAMEL_DATA_WRAPPER (multipart));
+ gmime_content_field_set_parameter (mime_type, "protocol", "application/pgp-encrypted");
+
+ /* add the parts to the multipart */
+ camel_multipart_add_part (multipart, version_part);
+ camel_object_unref (CAMEL_OBJECT (version_part));
+ camel_multipart_add_part (multipart, encrypted_part);
+ camel_object_unref (CAMEL_OBJECT (encrypted_part));
+
+ /* replace the input part with the output part */
+ *mime_part = camel_mime_part_new ();
+ camel_medium_set_content_object (CAMEL_MEDIUM (*mime_part),
+ CAMEL_DATA_WRAPPER (multipart));
+ camel_object_unref (CAMEL_OBJECT (multipart));
+
+ /* destroy the original part */
+ camel_object_unref (CAMEL_OBJECT (part));
+}
+
+
+/**
+ * pgp_mime_part_decrypt:
+ * @mime_part: a multipart/encrypted MIME Part
+ * @ex: exception
+ *
+ * Returns the decrypted MIME Part on success or NULL on fail.
+ **/
+CamelMimePart *
+pgp_mime_part_decrypt (CamelMimePart *mime_part, CamelException *ex)
+{
+ CamelDataWrapper *wrapper;
+ CamelMultipart *multipart;
+ CamelMimeParser *parser;
+ CamelMimePart *encrypted_part, *part;
+ GMimeContentField *mime_type;
+ CamelStream *stream;
+ GByteArray *content;
+ gchar *cleartext, *ciphertext = NULL;
+ int cipherlen, clearlen;
+
+ g_return_val_if_fail (mime_part != NULL, NULL);
+
+ /* make sure the mime part is a multipart/encrypted */
+ if (!is_rfc2015_encrypted (mime_part))
+ return NULL;
+
+ wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (mime_part));
+ multipart = CAMEL_MULTIPART (wrapper);
+
+ /* get the encrypted part (second part) */
+ encrypted_part = camel_multipart_get_part (multipart, 1 /* second part starting at 0 */);
+ mime_type = camel_mime_part_get_content_type (encrypted_part);
+ if (!gmime_content_field_is_type (mime_type, "application", "octet-stream"))
+ return NULL;
+
+ /* get the ciphertext */
+ content = g_byte_array_new ();
+ stream = camel_stream_mem_new_with_byte_array (content);
+ camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (encrypted_part), stream);
+ camel_object_unref (CAMEL_OBJECT (stream));
+ ciphertext = content->data;
+ cipherlen = content->len;
+
+ /* get the cleartext */
+ cleartext = mail_crypto_openpgp_decrypt (ciphertext, cipherlen, &clearlen, ex);
+ g_byte_array_free (content, TRUE);
+ if (camel_exception_is_set (ex))
+ return NULL;
+
+ /* create a stream based on the returned cleartext */
+ stream = camel_stream_mem_new ();
+ camel_stream_write (stream, cleartext, clearlen);
+ camel_stream_reset (stream);
+ g_free (cleartext);
+
+ /* construct the new decrypted mime part from the stream */
+ part = camel_mime_part_new ();
+ parser = camel_mime_parser_new ();
+ camel_mime_parser_init_with_stream (parser, stream);
+ camel_mime_part_construct_from_parser (part, parser);
+ camel_object_unref (CAMEL_OBJECT (parser));
+ camel_object_unref (CAMEL_OBJECT (stream));
+
+ return part;
+}
+
#endif /* PGP_PROGRAM */
diff --git a/mail/mail-crypto.h b/mail/mail-crypto.h
index 44d8a00400..250f46c022 100644
--- a/mail/mail-crypto.h
+++ b/mail/mail-crypto.h
@@ -38,11 +38,11 @@ typedef enum {
} PgpHashType;
char *mail_crypto_openpgp_decrypt (const char *ciphertext,
+ int cipherlen,
int *outlen,
CamelException *ex);
-char *mail_crypto_openpgp_encrypt (const char *plaintext,
- int inlen,
+char *mail_crypto_openpgp_encrypt (const char *in, int inlen,
const GPtrArray *recipients,
gboolean sign,
const char *userid,
@@ -51,9 +51,36 @@ char *mail_crypto_openpgp_encrypt (const char *plaintext,
char *mail_crypto_openpgp_clearsign (const char *plaintext,
const char *userid,
PgpHashType hash,
- gboolean detached,
CamelException *ex);
+char *mail_crypto_openpgp_sign (const char *in, int inlen,
+ const char *userid,
+ PgpHashType hash,
+ CamelException *ex);
+
+gboolean mail_crypto_openpgp_verify (const char *in, int inlen,
+ const char *sigin, int siglen,
+ CamelException *ex);
+
+gboolean is_rfc2015_signed (CamelMimePart *part);
+
+gboolean is_rfc2015_encrypted (CamelMimePart *part);
+
+void pgp_mime_part_sign (CamelMimePart **mime_part,
+ const gchar *userid,
+ PgpHashType hash,
+ CamelException *ex);
+
+gboolean pgp_mime_part_verify (CamelMimePart *mime_part,
+ CamelException *ex);
+
+void pgp_mime_part_encrypt (CamelMimePart **mime_part,
+ const GPtrArray *recipients,
+ CamelException *ex);
+
+CamelMimePart *pgp_mime_part_decrypt (CamelMimePart *mime_part,
+ CamelException *ex);
+
#ifdef __cplusplus
}
#endif /* __cplusplus */
diff --git a/mail/mail-format.c b/mail/mail-format.c
index b7eb7dbea0..b63b9a8d3d 100644
--- a/mail/mail-format.c
+++ b/mail/mail-format.c
@@ -75,6 +75,9 @@ static gboolean handle_multipart_appledouble (CamelMimePart *part,
static gboolean handle_multipart_encrypted (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
+static gboolean handle_multipart_signed (CamelMimePart *part,
+ const char *mime_type,
+ MailDisplay *md);
static gboolean handle_message_rfc822 (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
@@ -305,6 +308,8 @@ setup_mime_tables (void)
handle_multipart_appledouble);
g_hash_table_insert (mime_function_table, "multipart/encrypted",
handle_multipart_encrypted);
+ g_hash_table_insert (mime_function_table, "multipart/signed",
+ handle_multipart_signed);
/* RFC 2046 says unrecognized text subtypes can be treated
* as text/plain (as long as you recognize the character set),
@@ -835,8 +840,9 @@ decode_pgp (const char *ciphertext, int *outlen, MailDisplay *md)
camel_exception_init (&ex);
#ifdef PGP_PROGRAM
/* FIXME: multipart parts */
+ /* another FIXME: this doesn't have to return plaintext you realize... */
if (g_datalist_get_data (md->data, "show_pgp")) {
- plaintext = mail_crypto_openpgp_decrypt (ciphertext, outlen, &ex);
+ plaintext = mail_crypto_openpgp_decrypt (ciphertext, strlen (ciphertext), outlen, &ex);
if (plaintext)
return plaintext;
}
@@ -880,11 +886,12 @@ try_inline_pgp (char *start, MailDisplay *md)
if (!end)
return start;
- end += sizeof ("-----END PGP MESSAGE-----") - 1;
+ end += strlen ("-----END PGP MESSAGE-----") - 1;
mail_html_write (md->html, md->stream, "<hr>");
- /* FIXME: uhm, pgp decrypted data doesn't have to be plaintext */
+ /* FIXME: uhm, pgp decrypted data doesn't have to be plaintext
+ * however, I suppose that since it was 'inline', it probably is */
ciphertext = g_strndup (start, end - start);
plaintext = decode_pgp (ciphertext, &outlen, md);
g_free (ciphertext);
@@ -1189,90 +1196,55 @@ handle_multipart_mixed (CamelMimePart *part, const char *mime_type,
}
static gboolean
-is_rfc2015 (CamelMimePart *part)
+handle_multipart_encrypted (CamelMimePart *part, const char *mime_type,
+ MailDisplay *md)
{
- int nparts;
- char *text;
CamelDataWrapper *wrapper;
- CamelMultipart *mp;
- GMimeContentField *type;
-
- wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
- mp = CAMEL_MULTIPART (wrapper);
- nparts = camel_multipart_get_number (mp);
- if (nparts != 2)
- return FALSE;
-
- /* Check for application/pgp-encrypted in the first part. */
- part = camel_multipart_get_part (mp, 0);
- type = camel_mime_part_get_content_type (part);
- if (!gmime_content_field_is_type (type, "application", "pgp-encrypted"))
- return FALSE;
-
- /* Check version. */
+ CamelMimePart *mime_part;
+ CamelException ex;
+
wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
- text = get_data_wrapper_text (wrapper);
- if (!text || !strstr(text, "Version: 1")) {
- g_free(text);
- return FALSE;
+ g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
+
+ /* Currently we only handle RFC2015-style PGP encryption. */
+ if (!is_rfc2015_encrypted (part))
+ return handle_multipart_mixed (part, mime_type, md);
+
+ camel_exception_init (&ex);
+ mime_part = pgp_mime_part_decrypt (part, &ex);
+ if (camel_exception_is_set (&ex)) {
+ /* I guess we just treat this as a multipart/mixed */
+ return handle_multipart_mixed (part, mime_type, md);
+ } else {
+ gboolean retcode;
+
+ retcode = call_handler_function (mime_part, md);
+ camel_object_unref (CAMEL_OBJECT (mime_part));
+
+ return retcode;
}
- g_free(text);
-
- /* Check for application/octet-stream in the second part. */
- part = camel_multipart_get_part(mp, 1);
- type = camel_mime_part_get_content_type (part);
- if (!gmime_content_field_is_type (type, "application", "octet-stream"))
- return FALSE;
-
- return TRUE;
}
+/* FIXME: So this function is mostly just a place-holder for now */
static gboolean
-handle_multipart_encrypted (CamelMimePart *part, const char *mime_type,
- MailDisplay *md)
+handle_multipart_signed (CamelMimePart *part, const char *mime_type,
+ MailDisplay *md)
{
- CamelDataWrapper *wrapper =
- camel_medium_get_content_object (CAMEL_MEDIUM (part));
- CamelMultipart *mp;
- char *ciphertext, *plaintext;
- int outlen;
-
+ CamelDataWrapper *wrapper;
+ CamelException ex;
+ gboolean valid;
+
+ wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
- mp = CAMEL_MULTIPART (wrapper);
-
- /* Currently we only handle RFC2015-style PGP encryption. */
- if (!is_rfc2015 (part))
+
+ /* Currently we only handle RFC2015-style PGP signatures. */
+ if (!is_rfc2015_signed (part))
return handle_multipart_mixed (part, mime_type, md);
-
- part = camel_multipart_get_part (mp, 1);
- wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
- ciphertext = get_data_wrapper_text (wrapper);
- if (!ciphertext)
- return FALSE;
- /* FIXME: please note that decrypted data does NOT have to be plaintext */
- plaintext = decode_pgp (ciphertext, &outlen, md);
- if (plaintext) {
- CamelStream *memstream;
-
- memstream = camel_stream_mem_new_with_buffer (plaintext,
- strlen (plaintext));
- part = camel_mime_part_new ();
- camel_data_wrapper_construct_from_stream (CAMEL_DATA_WRAPPER (part),
- memstream);
- camel_object_unref (CAMEL_OBJECT (memstream));
-
- mail_html_write (md->html, md->stream,
- "<table width=\"100%%\" border=2 "
- "cellpadding=4><tr><td>");
- call_handler_function (part, md);
- mail_html_write (md->html, md->stream, "</td></tr></table>");
- camel_object_hook_event (CAMEL_OBJECT (md->current_message),
- "finalize", destroy_part, part);
- g_free (plaintext);
- }
-
- return TRUE;
+ camel_exception_init (&ex);
+ valid = pgp_mime_part_verify (part, &ex);
+
+ return valid;
}
/* As seen in RFC 2387! */