mime-node: split out _mime_node_set_up_part

[notmuch] / mime-node.c

diff --git a/mime-node.c b/mime-node.c
index 3492bcd039463bca7f0c6421b32437210f7d5471..d2125f90e625de2a07e8de4b00ef0e48bb882ddc 100644 (file)
--- a/mime-node.c
+++ b/mime-node.c
@@ -55,7 +55,7 @@ _mime_node_context_free (mime_node_context_t *res)
     return 0;
 }
 
-const _notmuch_message_crypto_t*
+const _notmuch_message_crypto_t *
 mime_node_get_message_crypto_status (mime_node_t *node)
 {
     return node->ctx->msg_crypto;
@@ -97,8 +97,7 @@ mime_node_open (const void *ctx, notmuch_message_t *message,
        notmuch_filenames_t *filenames;
        for (filenames = notmuch_message_get_filenames (message);
             notmuch_filenames_valid (filenames);
-            notmuch_filenames_move_to_next (filenames))
-       {
+            notmuch_filenames_move_to_next (filenames)) {
            filename = notmuch_filenames_get (filenames);
            fd = open (filename, O_RDONLY);
            if (fd != -1)
@@ -109,27 +108,27 @@ mime_node_open (const void *ctx, notmuch_message_t *message,
        if (fd == -1) {
            /* Give up */
            fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno));
-               status = NOTMUCH_STATUS_FILE_ERROR;
-               goto DONE;
-           }
+           status = NOTMUCH_STATUS_FILE_ERROR;
+           goto DONE;
        }
+    }
 
     mctx->stream = g_mime_stream_gzfile_new (fd);
-    if (!mctx->stream) {
+    if (! mctx->stream) {
        fprintf (stderr, "Out of memory.\n");
        status = NOTMUCH_STATUS_OUT_OF_MEMORY;
        goto DONE;
     }
 
     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, NULL);
-    if (!mctx->mime_message) {
+    if (! mctx->mime_message) {
        fprintf (stderr, "Failed to parse %s\n", filename);
        status = NOTMUCH_STATUS_FILE_ERROR;
        goto DONE;
@@ -153,7 +152,7 @@ mime_node_open (const void *ctx, notmuch_message_t *message,
     *root_out = root;
     return NOTMUCH_STATUS_SUCCESS;
 
-DONE:
+  DONE:
     talloc_free (root);
     return status;
 }
@@ -171,6 +170,7 @@ 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);
@@ -185,8 +185,8 @@ node_verify (mime_node_t *node, GMimeObject *part)
     notmuch_status_t status;
 
     node->verify_attempted = true;
-    node->sig_list = g_mime_multipart_signed_verify
-       (GMIME_MULTIPART_SIGNED (part), GMIME_ENCRYPT_NONE, &err);
+    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);
@@ -259,21 +259,22 @@ node_decrypt_and_verify (mime_node_t *node, GMimeObject *part)
        g_object_unref (decrypt_result);
     }
 
- DONE:
+  DONE:
     if (err)
        g_error_free (err);
 }
 
+static bool
+_mime_node_set_up_part (mime_node_t *node, GMimeObject *part, int numchild);
+
 static mime_node_t *
 _mime_node_create (mime_node_t *parent, GMimeObject *part, int numchild)
 {
     mime_node_t *node = talloc_zero (parent, mime_node_t);
-    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;
@@ -282,10 +283,24 @@ _mime_node_create (mime_node_t *parent, GMimeObject *part, int numchild)
     node->part_num = node->next_part_num = -1;
     node->next_child = 0;
 
+    if (_mime_node_set_up_part (node, part, numchild))
+       return node;
+    talloc_free (node);
+    return NULL;
+}
+
+/* associate a MIME part with a node. */
+static bool
+_mime_node_set_up_part (mime_node_t *node, GMimeObject *part, int numchild)
+{
+    notmuch_status_t status;
+
     /* Deal with the different types of parts */
     if (GMIME_IS_PART (part)) {
+       node->part = part;
        node->nchildren = 0;
     } else if (GMIME_IS_MULTIPART (part)) {
+       node->part = part;
        node->nchildren = g_mime_multipart_get_count (GMIME_MULTIPART (part));
     } else if (GMIME_IS_MESSAGE_PART (part)) {
        /* Promote part to an envelope and open it */
@@ -297,11 +312,10 @@ _mime_node_create (mime_node_t *parent, GMimeObject *part, int numchild)
     } else {
        fprintf (stderr, "Warning: Unknown mime part type: %s.\n",
                 g_type_name (G_OBJECT_TYPE (part)));
-       talloc_free (node);
-       return NULL;
+       return false;
     }
 
-    /* Handle PGP/MIME parts */
+    /* Handle PGP/MIME parts (by definition not cryptographic payload parts) */
     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. */
@@ -321,12 +335,12 @@ _mime_node_create (mime_node_t *parent, GMimeObject *part, int numchild)
            node_verify (node, part);
        }
     } else {
-       status = _notmuch_message_crypto_potential_payload (node->ctx->msg_crypto, part, parent ? parent->part : NULL, numchild);
+       status = _notmuch_message_crypto_potential_payload (node->ctx->msg_crypto, part, node->parent ? node->parent->part : NULL, numchild);
        if (status)
            fprintf (stderr, "Warning: failed to record potential crypto payload (%s).\n", notmuch_status_to_string (status));
     }
 
-    return node;
+    return true;
 }
 
 mime_node_t *
@@ -335,19 +349,19 @@ 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 {
-       /* This should have been caught by message_part_create */
+       /* This should have been caught by _mime_node_set_up_part */
        INTERNAL_ERROR ("Unexpected GMimeObject type: %s",
                        g_type_name (G_OBJECT_TYPE (parent->part)));
     }