X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=mime-node.c;h=3133ca44af41c2fc0accc9fe534339277deb7975;hp=f719422ec678bbe340cd670861bb5cf0b0ca347e;hb=33382c2b5ba2537952a60ea378feff36961e4713;hpb=d877240f4e097eb3dd477409a24155c10e0b3c17 diff --git a/mime-node.c b/mime-node.c index f719422e..3133ca44 100644 --- a/mime-node.c +++ b/mime-node.c @@ -21,19 +21,23 @@ * Austin Clements */ +#include +#include +#include + #include "notmuch-client.h" /* Context that gets inherited from the root node. */ typedef struct mime_node_context { /* Per-message resources. These are allocated internally and must * be destroyed. */ - FILE *file; GMimeStream *stream; GMimeParser *parser; GMimeMessage *mime_message; + _notmuch_message_crypto_t *msg_crypto; /* Context provided by the caller. */ - notmuch_crypto_t *crypto; + _notmuch_crypto_t *crypto; } mime_node_context_t; static int @@ -48,20 +52,24 @@ _mime_node_context_free (mime_node_context_t *res) if (res->stream) g_object_unref (res->stream); - if (res->file) - fclose (res->file); - return 0; } +const _notmuch_message_crypto_t * +mime_node_get_message_crypto_status (mime_node_t *node) +{ + return node->ctx->msg_crypto; +} + notmuch_status_t mime_node_open (const void *ctx, notmuch_message_t *message, - notmuch_crypto_t *crypto, mime_node_t **root_out) + _notmuch_crypto_t *crypto, mime_node_t **root_out) { const char *filename = notmuch_message_get_filename (message); mime_node_context_t *mctx; mime_node_t *root; notmuch_status_t status; + int fd; root = talloc_zero (ctx, mime_node_t); if (root == NULL) { @@ -79,35 +87,55 @@ mime_node_open (const void *ctx, notmuch_message_t *message, } talloc_set_destructor (mctx, _mime_node_context_free); - mctx->file = fopen (filename, "r"); - if (! mctx->file) { - fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno)); - status = NOTMUCH_STATUS_FILE_ERROR; - goto DONE; + /* Fast path */ + fd = open (filename, O_RDONLY); + if (fd == -1) { + /* Slow path - for some reason the first file in the list is + * not available anymore. This is clearly a problem in the + * database, but we are not going to let this problem be a + * show stopper */ + notmuch_filenames_t *filenames; + for (filenames = notmuch_message_get_filenames (message); + notmuch_filenames_valid (filenames); + notmuch_filenames_move_to_next (filenames)) { + filename = notmuch_filenames_get (filenames); + fd = open (filename, O_RDONLY); + if (fd != -1) + break; + } + + talloc_free (filenames); + if (fd == -1) { + /* Give up */ + fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno)); + status = NOTMUCH_STATUS_FILE_ERROR; + goto DONE; + } } - mctx->stream = g_mime_stream_file_new (mctx->file); - if (!mctx->stream) { + mctx->stream = g_mime_stream_gzfile_new (fd); + if (! mctx->stream) { fprintf (stderr, "Out of memory.\n"); status = NOTMUCH_STATUS_OUT_OF_MEMORY; goto DONE; } - g_mime_stream_file_set_owner (GMIME_STREAM_FILE (mctx->stream), FALSE); mctx->parser = g_mime_parser_new_with_stream (mctx->stream); - if (!mctx->parser) { + if (! mctx->parser) { fprintf (stderr, "Out of memory.\n"); status = NOTMUCH_STATUS_OUT_OF_MEMORY; goto DONE; } - mctx->mime_message = g_mime_parser_construct_message (mctx->parser); - if (!mctx->mime_message) { + mctx->mime_message = g_mime_parser_construct_message (mctx->parser, NULL); + if (! mctx->mime_message) { fprintf (stderr, "Failed to parse %s\n", filename); status = NOTMUCH_STATUS_FILE_ERROR; goto DONE; } + mctx->msg_crypto = _notmuch_message_crypto_new (mctx); + mctx->crypto = crypto; /* Create the root node */ @@ -124,12 +152,12 @@ mime_node_open (const void *ctx, notmuch_message_t *message, *root_out = root; return NOTMUCH_STATUS_SUCCESS; -DONE: + DONE: talloc_free (root); return status; } -/* Signature list destructor (GMime 2.6) */ +/* Signature list destructor */ static int _signature_list_free (GMimeSignatureList **proxy) { @@ -137,27 +165,28 @@ _signature_list_free (GMimeSignatureList **proxy) return 0; } -/* Set up signature list destructor (GMime 2.6) */ +/* Set up signature list destructor */ static void set_signature_list_destructor (mime_node_t *node) { GMimeSignatureList **proxy = talloc (node, GMimeSignatureList *); + if (proxy) { *proxy = node->sig_list; talloc_set_destructor (proxy, _signature_list_free); } } -/* Verify a signed mime node (GMime 2.6) */ +/* Verify a signed mime node */ static void -node_verify (mime_node_t *node, GMimeObject *part, - notmuch_crypto_context_t *cryptoctx) +node_verify (mime_node_t *node, GMimeObject *part) { GError *err = NULL; + notmuch_status_t status; - node->verify_attempted = TRUE; - node->sig_list = g_mime_multipart_signed_verify - (GMIME_MULTIPART_SIGNED (part), cryptoctx, &err); + node->verify_attempted = true; + node->sig_list = g_mime_multipart_signed_verify ( + GMIME_MULTIPART_SIGNED (part), GMIME_ENCRYPT_NONE, &err); if (node->sig_list) set_signature_list_destructor (node); @@ -167,52 +196,84 @@ node_verify (mime_node_t *node, GMimeObject *part, if (err) g_error_free (err); + + status = _notmuch_message_crypto_potential_sig_list (node->ctx->msg_crypto, node->sig_list); + if (status) /* this is a warning, not an error */ + fprintf (stderr, "Warning: failed to note signature status: %s.\n", notmuch_status_to_string (status)); } -/* Decrypt and optionally verify an encrypted mime node (GMime 2.6) */ +/* Decrypt and optionally verify an encrypted mime node */ static void -node_decrypt_and_verify (mime_node_t *node, GMimeObject *part, - notmuch_crypto_context_t *cryptoctx) +node_decrypt_and_verify (mime_node_t *node, GMimeObject *part) { GError *err = NULL; GMimeDecryptResult *decrypt_result = NULL; + notmuch_status_t status; GMimeMultipartEncrypted *encrypteddata = GMIME_MULTIPART_ENCRYPTED (part); + notmuch_message_t *message = NULL; - node->decrypt_attempted = TRUE; - node->decrypted_child = g_mime_multipart_encrypted_decrypt - (encrypteddata, cryptoctx, &decrypt_result, &err); + if (! node->decrypted_child) { + for (mime_node_t *parent = node; parent; parent = parent->parent) + if (parent->envelope_file) { + message = parent->envelope_file; + break; + } + + node->decrypted_child = _notmuch_crypto_decrypt (&node->decrypt_attempted, + node->ctx->crypto->decrypt, + message, + encrypteddata, &decrypt_result, &err); + } if (! node->decrypted_child) { fprintf (stderr, "Failed to decrypt part: %s\n", err ? err->message : "no error explanation given"); goto DONE; } - node->decrypt_success = TRUE; - node->verify_attempted = TRUE; + node->decrypt_success = true; + status = _notmuch_message_crypto_successful_decryption (node->ctx->msg_crypto); + if (status) /* this is a warning, not an error */ + fprintf (stderr, "Warning: failed to note decryption status: %s.\n", notmuch_status_to_string (status)); + + if (decrypt_result) { + /* 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) { + node->verify_attempted = true; + g_object_ref (node->sig_list); + set_signature_list_destructor (node); + status = _notmuch_message_crypto_potential_sig_list (node->ctx->msg_crypto, node->sig_list); + if (status) /* this is a warning, not an error */ + fprintf (stderr, "Warning: failed to note signature status: %s.\n", notmuch_status_to_string (status)); + } - /* 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); - set_signature_list_destructor (node); + if (node->ctx->crypto->decrypt == NOTMUCH_DECRYPT_TRUE && message) { + notmuch_database_t *db = notmuch_message_get_database (message); + const char *session_key = g_mime_decrypt_result_get_session_key (decrypt_result); + if (db && session_key) + print_status_message ("Failed to stash session key in the database", + message, + notmuch_message_add_property (message, "session-key", + session_key)); + } + g_object_unref (decrypt_result); } - g_object_unref (decrypt_result); - DONE: + DONE: if (err) g_error_free (err); } static mime_node_t * -_mime_node_create (mime_node_t *parent, GMimeObject *part) +_mime_node_create (mime_node_t *parent, GMimeObject *part, int numchild) { mime_node_t *node = talloc_zero (parent, mime_node_t); - notmuch_crypto_context_t *cryptoctx = NULL; + notmuch_status_t status; /* Set basic node properties */ node->part = part; node->ctx = parent->ctx; - if (!talloc_reference (node, node->ctx)) { + if (! talloc_reference (node, node->ctx)) { fprintf (stderr, "Out of memory.\n"); talloc_free (node); return NULL; @@ -240,32 +301,29 @@ _mime_node_create (mime_node_t *parent, GMimeObject *part) return NULL; } - if ((GMIME_IS_MULTIPART_ENCRYPTED (part) && node->ctx->crypto->decrypt) - || (GMIME_IS_MULTIPART_SIGNED (part) && node->ctx->crypto->verify)) { - GMimeContentType *content_type = g_mime_object_get_content_type (part); - const char *protocol = g_mime_content_type_get_parameter (content_type, "protocol"); - cryptoctx = notmuch_crypto_get_context (node->ctx->crypto, protocol); - } - /* Handle PGP/MIME parts */ - if (GMIME_IS_MULTIPART_ENCRYPTED (part) && node->ctx->crypto->decrypt && cryptoctx) { + if (GMIME_IS_MULTIPART_ENCRYPTED (part) && (node->ctx->crypto->decrypt != NOTMUCH_DECRYPT_FALSE)) { if (node->nchildren != 2) { /* this violates RFC 3156 section 4, so we won't bother with it. */ fprintf (stderr, "Error: %d part(s) for a multipart/encrypted " "message (must be exactly 2)\n", node->nchildren); } else { - node_decrypt_and_verify (node, part, cryptoctx); + node_decrypt_and_verify (node, part); } - } else if (GMIME_IS_MULTIPART_SIGNED (part) && node->ctx->crypto->verify && cryptoctx) { + } else if (GMIME_IS_MULTIPART_SIGNED (part) && node->ctx->crypto->verify) { if (node->nchildren != 2) { /* this violates RFC 3156 section 5, so we won't bother with it. */ fprintf (stderr, "Error: %d part(s) for a multipart/signed message " "(must be exactly 2)\n", node->nchildren); } else { - node_verify (node, part, cryptoctx); + node_verify (node, part); } + } else { + status = _notmuch_message_crypto_potential_payload (node->ctx->msg_crypto, part, parent ? parent->part : NULL, numchild); + if (status) + fprintf (stderr, "Warning: failed to record potential crypto payload (%s).\n", notmuch_status_to_string (status)); } return node; @@ -277,15 +335,15 @@ mime_node_child (mime_node_t *parent, int child) GMimeObject *sub; mime_node_t *node; - if (!parent || !parent->part || child < 0 || child >= parent->nchildren) + if (! parent || ! parent->part || child < 0 || child >= parent->nchildren) return NULL; if (GMIME_IS_MULTIPART (parent->part)) { - if (child == 1 && parent->decrypted_child) + if (child == GMIME_MULTIPART_ENCRYPTED_CONTENT && parent->decrypted_child) sub = parent->decrypted_child; else - sub = g_mime_multipart_get_part - (GMIME_MULTIPART (parent->part), child); + sub = g_mime_multipart_get_part ( + GMIME_MULTIPART (parent->part), child); } else if (GMIME_IS_MESSAGE (parent->part)) { sub = g_mime_message_get_mime_part (GMIME_MESSAGE (parent->part)); } else { @@ -293,7 +351,7 @@ mime_node_child (mime_node_t *parent, int child) INTERNAL_ERROR ("Unexpected GMimeObject type: %s", g_type_name (G_OBJECT_TYPE (parent->part))); } - node = _mime_node_create (parent, sub); + node = _mime_node_create (parent, sub, child); if (child == parent->next_child && parent->next_part_num != -1) { /* We're traversing in depth-first order. Record the child's