From 00b5623d1a21d886b564d031e30749e5d02e4ae6 Mon Sep 17 00:00:00 2001 From: Thomas Jost Date: Fri, 20 Jan 2012 10:39:24 +0100 Subject: [PATCH] Add compatibility with gmime 2.6 There are lots of API changes in gmime 2.6 crypto handling. By adding preprocessor directives, it is however possible to add gmime 2.6 compatibility while preserving compatibility with gmime 2.4 too. This is mostly based on id:"8762i8hrb9.fsf@bookbinder.fernseed.info". This was tested against both gmime 2.6.4 and 2.4.31. With gmime 2.4.31, the crypto tests all work fine (as expected). With gmime 2.6.4, one crypto test is currently broken (signature verification with signer key unavailable), most likely because of a bug in gmime which will hopefully be fixed in a future version. --- mime-node.c | 57 ++++++++++++++++++++++++++++- notmuch-client.h | 30 ++++++++++++++- notmuch-reply.c | 7 ++++ notmuch-show.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++++ show-message.c | 4 ++ test/crypto | 2 + 6 files changed, 191 insertions(+), 4 deletions(-) diff --git a/mime-node.c b/mime-node.c index d26bb445..27077f7f 100644 --- a/mime-node.c +++ b/mime-node.c @@ -33,7 +33,11 @@ typedef struct mime_node_context { GMimeMessage *mime_message; /* Context provided by the caller. */ +#ifdef GMIME_ATLEAST_26 + GMimeCryptoContext *cryptoctx; +#else GMimeCipherContext *cryptoctx; +#endif notmuch_bool_t decrypt; } mime_node_context_t; @@ -57,8 +61,12 @@ _mime_node_context_free (mime_node_context_t *res) notmuch_status_t mime_node_open (const void *ctx, notmuch_message_t *message, - GMimeCipherContext *cryptoctx, notmuch_bool_t decrypt, - mime_node_t **root_out) +#ifdef GMIME_ATLEAST_26 + GMimeCryptoContext *cryptoctx, +#else + GMimeCipherContext *cryptoctx, +#endif + notmuch_bool_t decrypt, mime_node_t **root_out) { const char *filename = notmuch_message_get_filename (message); mime_node_context_t *mctx; @@ -112,12 +120,21 @@ DONE: return status; } +#ifdef GMIME_ATLEAST_26 +static int +_signature_list_free (GMimeSignatureList **proxy) +{ + g_object_unref (*proxy); + return 0; +} +#else static int _signature_validity_free (GMimeSignatureValidity **proxy) { g_mime_signature_validity_free (*proxy); return 0; } +#endif static mime_node_t * _mime_node_create (const mime_node_t *parent, GMimeObject *part) @@ -165,11 +182,25 @@ _mime_node_create (const mime_node_t *parent, GMimeObject *part) GMimeMultipartEncrypted *encrypteddata = GMIME_MULTIPART_ENCRYPTED (part); node->decrypt_attempted = TRUE; +#ifdef GMIME_ATLEAST_26 + GMimeDecryptResult *decrypt_result = NULL; + node->decrypted_child = g_mime_multipart_encrypted_decrypt + (encrypteddata, node->ctx->cryptoctx, &decrypt_result, &err); +#else node->decrypted_child = g_mime_multipart_encrypted_decrypt (encrypteddata, node->ctx->cryptoctx, &err); +#endif if (node->decrypted_child) { node->decrypt_success = node->verify_attempted = TRUE; +#ifdef GMIME_ATLEAST_26 + /* This may be NULL if the part is not signed. */ + node->sig_list = g_mime_decrypt_result_get_signatures (decrypt_result); + if (node->sig_list) + g_object_ref (node->sig_list); + g_object_unref (decrypt_result); +#else node->sig_validity = g_mime_multipart_encrypted_get_signature_validity (encrypteddata); +#endif } else { fprintf (stderr, "Failed to decrypt part: %s\n", (err ? err->message : "no error explanation given")); @@ -182,6 +213,15 @@ _mime_node_create (const mime_node_t *parent, GMimeObject *part) "(must be exactly 2)\n", node->nchildren); } else { +#ifdef GMIME_ATLEAST_26 + node->sig_list = g_mime_multipart_signed_verify + (GMIME_MULTIPART_SIGNED (part), node->ctx->cryptoctx, &err); + node->verify_attempted = TRUE; + + if (!node->sig_list) + fprintf (stderr, "Failed to verify signed part: %s\n", + (err ? err->message : "no error explanation given")); +#else /* For some reason the GMimeSignatureValidity returned * here is not a const (inconsistent with that * returned by @@ -200,12 +240,25 @@ _mime_node_create (const mime_node_t *parent, GMimeObject *part) *proxy = sig_validity; talloc_set_destructor (proxy, _signature_validity_free); } +#endif } } +#ifdef GMIME_ATLEAST_26 + /* sig_list may be created in both above cases, so we need to + * cleanly handle it here. */ + if (node->sig_list) { + GMimeSignatureList **proxy = talloc (node, GMimeSignatureList *); + *proxy = node->sig_list; + talloc_set_destructor (proxy, _signature_list_free); + } +#endif + +#ifndef GMIME_ATLEAST_26 if (node->verify_attempted && !node->sig_validity) fprintf (stderr, "Failed to verify signed part: %s\n", (err ? err->message : "no error explanation given")); +#endif if (err) g_error_free (err); diff --git a/notmuch-client.h b/notmuch-client.h index 62ede28e..9c1d383d 100644 --- a/notmuch-client.h +++ b/notmuch-client.h @@ -30,6 +30,14 @@ #include +/* GMIME_CHECK_VERSION in gmime 2.4 is not usable from the + * preprocessor (it calls a runtime function). But since + * GMIME_MAJOR_VERSION and friends were added in gmime 2.6, we can use + * these to check the version number. */ +#ifdef GMIME_MAJOR_VERSION +#define GMIME_ATLEAST_26 +#endif + #include "notmuch.h" /* This is separate from notmuch-private.h because we're trying to @@ -69,7 +77,11 @@ typedef struct notmuch_show_format { void (*part_start) (GMimeObject *part, int *part_count); void (*part_encstatus) (int status); +#ifdef GMIME_ATLEAST_26 + void (*part_sigstatus) (GMimeSignatureList* siglist); +#else void (*part_sigstatus) (const GMimeSignatureValidity* validity); +#endif void (*part_content) (GMimeObject *part); void (*part_end) (GMimeObject *part); const char *part_sep; @@ -83,7 +95,11 @@ typedef struct notmuch_show_params { int entire_thread; int raw; int part; +#ifdef GMIME_ATLEAST_26 + GMimeCryptoContext* cryptoctx; +#else GMimeCipherContext* cryptoctx; +#endif int decrypt; } notmuch_show_params_t; @@ -290,11 +306,17 @@ typedef struct mime_node { /* True if signature verification on this part was attempted. */ notmuch_bool_t verify_attempted; +#ifdef GMIME_ATLEAST_26 + /* The list of signatures for signed or encrypted containers. If + * there are no signatures, this will be NULL. */ + GMimeSignatureList* sig_list; +#else /* For signed or encrypted containers, the validity of the * signature. May be NULL if signature verification failed. If * there are simply no signatures, this will be non-NULL with an * empty signers list. */ const GMimeSignatureValidity *sig_validity; +#endif /* Internal: Context inherited from the root iterator. */ struct mime_node_context *ctx; @@ -319,8 +341,12 @@ typedef struct mime_node { */ notmuch_status_t mime_node_open (const void *ctx, notmuch_message_t *message, - GMimeCipherContext *cryptoctx, notmuch_bool_t decrypt, - mime_node_t **node_out); +#ifdef GMIME_ATLEAST_26 + GMimeCryptoContext *cryptoctx, +#else + GMimeCipherContext *cryptoctx, +#endif + notmuch_bool_t decrypt, mime_node_t **node_out); /* Return a new MIME node for the requested child part of parent. * parent will be used as the talloc context for the returned child diff --git a/notmuch-reply.c b/notmuch-reply.c index 0f682db4..bf679601 100644 --- a/notmuch-reply.c +++ b/notmuch-reply.c @@ -688,15 +688,22 @@ notmuch_reply_command (void *ctx, int argc, char *argv[]) reply_format_func = notmuch_reply_format_default; if (decrypt) { +#ifdef GMIME_ATLEAST_26 + /* TODO: GMimePasswordRequestFunc */ + params.cryptoctx = g_mime_gpg_context_new (NULL, "gpg"); +#else GMimeSession* session = g_object_new (g_mime_session_get_type(), NULL); params.cryptoctx = g_mime_gpg_context_new (session, "gpg"); +#endif if (params.cryptoctx) { g_mime_gpg_context_set_always_trust ((GMimeGpgContext*) params.cryptoctx, FALSE); params.decrypt = TRUE; } else { fprintf (stderr, "Failed to construct gpg context.\n"); } +#ifndef GMIME_ATLEAST_26 g_object_unref (session); +#endif } config = notmuch_config_open (ctx, NULL, NULL); diff --git a/notmuch-show.c b/notmuch-show.c index c674e250..43ee2112 100644 --- a/notmuch-show.c +++ b/notmuch-show.c @@ -76,7 +76,11 @@ static void format_part_encstatus_json (int status); static void +#ifdef GMIME_ATLEAST_26 +format_part_sigstatus_json (GMimeSignatureList* siglist); +#else format_part_sigstatus_json (const GMimeSignatureValidity* validity); +#endif static void format_part_content_json (GMimeObject *part); @@ -486,6 +490,21 @@ show_text_part_content (GMimeObject *part, GMimeStream *stream_out) g_object_unref(stream_filter); } +#ifdef GMIME_ATLEAST_26 +static const char* +signature_status_to_string (GMimeSignatureStatus x) +{ + switch (x) { + case GMIME_SIGNATURE_STATUS_GOOD: + return "good"; + case GMIME_SIGNATURE_STATUS_BAD: + return "bad"; + case GMIME_SIGNATURE_STATUS_ERROR: + return "error"; + } + return "unknown"; +} +#else static const char* signer_status_to_string (GMimeSignerStatus x) { @@ -501,6 +520,7 @@ signer_status_to_string (GMimeSignerStatus x) } return "unknown"; } +#endif static void format_part_start_text (GMimeObject *part, int *part_count) @@ -592,6 +612,73 @@ format_part_encstatus_json (int status) printf ("}]"); } +#ifdef GMIME_ATLEAST_26 +static void +format_part_sigstatus_json (GMimeSignatureList *siglist) +{ + printf (", \"sigstatus\": ["); + + if (!siglist) { + printf ("]"); + return; + } + + void *ctx_quote = talloc_new (NULL); + int i; + for (i = 0; i < g_mime_signature_list_length (siglist); i++) { + GMimeSignature *signature = g_mime_signature_list_get_signature (siglist, i); + + if (i > 0) + printf (", "); + + printf ("{"); + + /* status */ + GMimeSignatureStatus status = g_mime_signature_get_status (signature); + printf ("\"status\": %s", + json_quote_str (ctx_quote, + signature_status_to_string (status))); + + GMimeCertificate *certificate = g_mime_signature_get_certificate (signature); + if (status == GMIME_SIGNATURE_STATUS_GOOD) { + if (certificate) + printf (", \"fingerprint\": %s", json_quote_str (ctx_quote, g_mime_certificate_get_fingerprint (certificate))); + /* these dates are seconds since the epoch; should we + * provide a more human-readable format string? */ + time_t created = g_mime_signature_get_created (signature); + if (created != -1) + printf (", \"created\": %d", (int) created); + time_t expires = g_mime_signature_get_expires (signature); + if (expires > 0) + printf (", \"expires\": %d", (int) expires); + /* output user id only if validity is FULL or ULTIMATE. */ + /* note that gmime is using the term "trust" here, which + * is WRONG. It's actually user id "validity". */ + if (certificate) { + const char *name = g_mime_certificate_get_name (certificate); + GMimeCertificateTrust trust = g_mime_certificate_get_trust (certificate); + if (name && (trust == GMIME_CERTIFICATE_TRUST_FULLY || trust == GMIME_CERTIFICATE_TRUST_ULTIMATE)) + printf (", \"userid\": %s", json_quote_str (ctx_quote, name)); + } + } else if (certificate) { + const char *key_id = g_mime_certificate_get_key_id (certificate); + if (key_id) + printf (", \"keyid\": %s", json_quote_str (ctx_quote, key_id)); + } + + GMimeSignatureError errors = g_mime_signature_get_errors (signature); + if (errors != GMIME_SIGNATURE_ERROR_NONE) { + printf (", \"errors\": %d", errors); + } + + printf ("}"); + } + + printf ("]"); + + talloc_free (ctx_quote); +} +#else static void format_part_sigstatus_json (const GMimeSignatureValidity* validity) { @@ -652,6 +739,7 @@ format_part_sigstatus_json (const GMimeSignatureValidity* validity) talloc_free (ctx_quote); } +#endif static void format_part_content_json (GMimeObject *part) @@ -1000,13 +1088,20 @@ notmuch_show_command (void *ctx, unused (int argc), unused (char *argv[])) } else if ((STRNCMP_LITERAL (argv[i], "--verify") == 0) || (STRNCMP_LITERAL (argv[i], "--decrypt") == 0)) { if (params.cryptoctx == NULL) { +#ifdef GMIME_ATLEAST_26 + /* TODO: GMimePasswordRequestFunc */ + if (NULL == (params.cryptoctx = g_mime_gpg_context_new(NULL, "gpg"))) +#else GMimeSession* session = g_object_new(g_mime_session_get_type(), NULL); if (NULL == (params.cryptoctx = g_mime_gpg_context_new(session, "gpg"))) +#endif fprintf (stderr, "Failed to construct gpg context.\n"); else g_mime_gpg_context_set_always_trust((GMimeGpgContext*)params.cryptoctx, FALSE); +#ifndef GMIME_ATLEAST_26 g_object_unref (session); session = NULL; +#endif } if (STRNCMP_LITERAL (argv[i], "--decrypt") == 0) params.decrypt = 1; diff --git a/show-message.c b/show-message.c index 8768889e..83ecf813 100644 --- a/show-message.c +++ b/show-message.c @@ -48,7 +48,11 @@ show_message_part (mime_node_t *node, format->part_encstatus (node->decrypt_success); if (node->verify_attempted && format->part_sigstatus) +#ifdef GMIME_ATLEAST_26 + format->part_sigstatus (node->sig_list); +#else format->part_sigstatus (node->sig_validity); +#endif format->part_content (part); diff --git a/test/crypto b/test/crypto index 0af4aa8a..446a58b7 100755 --- a/test/crypto +++ b/test/crypto @@ -104,6 +104,8 @@ test_expect_equal \ "$expected" test_begin_subtest "signature verification with signer key unavailable" +# this is broken with current versions of gmime-2.6 +(ldd $(which notmuch) | grep -Fq gmime-2.6) && test_subtest_known_broken # move the gnupghome temporarily out of the way mv "${GNUPGHOME}"{,.bak} output=$(notmuch show --format=json --verify subject:"test signed message 001" \