Removed some debug 'warnings', as they should now be displayed at the

2001-01-23  Not Zed  <NotZed@Ximian.com>

        * providers/imap/camel-imap-summary.c (message_info_load): Removed
        some debug 'warnings', as they should now be displayed at the
        toplevel loader, and just made the code match similar code
        elsewhere.

        * providers/local/camel-mbox-summary.c (message_info_load): Error
        handling.
        (message_info_save): more error handling.

        * camel-folder-summary.c (message_info_load): Add error handling
        and sanity checking.
        (camel_folder_summary_load): Add error checks.
        (perform_content_info_load): Error + sanity checks.
        (content_info_load): error + sanity checks.

4 files changed, 87 insertions, 30 deletions

diff --git a/camel/ChangeLog b/camel/ChangeLog
index 3fedcec67..ae517c44a 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,5 +1,20 @@
 2001-01-23  Not Zed  <NotZed@Ximian.com>
 
+	* providers/imap/camel-imap-summary.c (message_info_load): Removed
+	some debug 'warnings', as they should now be displayed at the
+	toplevel loader, and just made the code match similar code
+	elsewhere.
+
+	* providers/local/camel-mbox-summary.c (message_info_load): Error
+	handling.
+	(message_info_save): more error handling.
+
+	* camel-folder-summary.c (message_info_load): Add error handling
+	and sanity checking.
+	(camel_folder_summary_load): Add error checks.
+	(perform_content_info_load): Error + sanity checks.
+	(content_info_load): error + sanity checks.
+
 	* camel-filter-driver.c (close_folder): avoid /0 by updating after
 	we've done the sync.
 	(close_folders): Setup the first progress report to start it off.
diff --git a/camel/camel-folder-summary.c b/camel/camel-folder-summary.c
index 147c8e452..376aea12d 100644
--- a/camel/camel-folder-summary.c
+++ b/camel/camel-folder-summary.c
@@ -498,7 +498,14 @@ perform_content_info_load(CamelFolderSummary *s, FILE *in)
 	CamelMessageContentInfo *ci, *part;
 
 	ci = ((CamelFolderSummaryClass *)(CAMEL_OBJECT_GET_CLASS(s)))->content_info_load(s, in);
-	camel_folder_summary_decode_uint32(in, &count);
+	if (ci == NULL)
+		return NULL;
+
+	if (camel_folder_summary_decode_uint32(in, &count) == -1 || count > 500) {
+		camel_folder_summary_content_info_free(s, ci);
+		return NULL;
+	}
+
 	for (i=0;i<count;i++) {
 		part = perform_content_info_load(s, in);
 		if (part) {
@@ -506,6 +513,8 @@ perform_content_info_load(CamelFolderSummary *s, FILE *in)
 			part->parent = ci;
 		} else {
 			g_warning("Summary file format messed up?");
+			camel_folder_summary_content_info_free(s, ci);
+			return NULL;
 		}
 	}
 	return ci;
@@ -521,24 +530,26 @@ camel_folder_summary_load(CamelFolderSummary *s)
 	g_assert(s->summary_path);
 
 	in = fopen(s->summary_path, "r");
-	if ( in == NULL ) {
+	if (in == NULL)
 		return -1;
-	}
 
 	CAMEL_SUMMARY_LOCK(s, io_lock);
-	if ( ((CamelFolderSummaryClass *)(CAMEL_OBJECT_GET_CLASS(s)))->summary_header_load(s, in) == -1) {
-		fclose(in);
-		CAMEL_SUMMARY_UNLOCK(s, io_lock);
-		return -1;
-	}
+	if ( ((CamelFolderSummaryClass *)(CAMEL_OBJECT_GET_CLASS(s)))->summary_header_load(s, in) == -1)
+		goto error;
 
 	/* now read in each message ... */
-	/* FIXME: check returns */
 	for (i=0;i<s->saved_count;i++) {
 		mi = ((CamelFolderSummaryClass *)(CAMEL_OBJECT_GET_CLASS(s)))->message_info_load(s, in);
-		
+
+		if (mi == NULL)
+			goto error;
+
 		if (s->build_content) {
 			mi->content = perform_content_info_load(s, in);
+			if (mi->content == NULL) {
+				camel_folder_summary_info_free(s, mi);
+				goto error;
+			}
 		}
 
 		camel_folder_summary_add(s, mi);
@@ -552,6 +563,14 @@ camel_folder_summary_load(CamelFolderSummary *s)
 	s->flags &= ~CAMEL_SUMMARY_DIRTY;
 
 	return 0;
+
+error:
+	g_warning("Cannot load summary file: %s", strerror(ferror(in)));
+	CAMEL_SUMMARY_UNLOCK(s, io_lock);
+	fclose(in);
+	s->flags |= ~CAMEL_SUMMARY_DIRTY;
+
+	return -1;
 }
 
 /* saves the content descriptions, recursively */
@@ -1790,7 +1809,9 @@ message_info_load(CamelFolderSummary *s, FILE *in)
 	camel_folder_summary_decode_fixed_int32(in, &mi->message_id.id.part.hi);
 	camel_folder_summary_decode_fixed_int32(in, &mi->message_id.id.part.lo);
 
-	camel_folder_summary_decode_uint32(in, &count);
+	if (camel_folder_summary_decode_uint32(in, &count) == -1 || count > 500)
+		goto error;
+
 	if (count > 0) {
 		mi->references = g_malloc(sizeof(*mi->references) + ((count-1) * sizeof(mi->references->references[0])));
 		mi->references->size = count;
@@ -1800,7 +1821,9 @@ message_info_load(CamelFolderSummary *s, FILE *in)
 		}
 	}
 
-	camel_folder_summary_decode_uint32(in, &count);
+	if (camel_folder_summary_decode_uint32(in, &count) == -1 || count > 500)
+		goto error;
+
 	for (i=0;i<count;i++) {
 		char *name;
 		camel_folder_summary_decode_string(in, &name);
@@ -1808,7 +1831,9 @@ message_info_load(CamelFolderSummary *s, FILE *in)
 		g_free(name);
 	}
 
-	camel_folder_summary_decode_uint32(in, &count);
+	if (camel_folder_summary_decode_uint32(in, &count) == -1 || count > 500)
+		goto error;
+
 	for (i=0;i<count;i++) {
 		char *name, *value;
 		camel_folder_summary_decode_string(in, &name);
@@ -1818,7 +1843,13 @@ message_info_load(CamelFolderSummary *s, FILE *in)
 		g_free(value);
 	}
 
-	return mi;
+	if (!ferror(in))
+		return mi;
+
+error:
+	camel_folder_summary_info_free(s, mi);
+
+	return NULL;
 }
 
 static int
@@ -1923,7 +1954,9 @@ content_info_load(CamelFolderSummary *s, FILE *in)
 	ct = header_content_type_new(type, subtype);
 	g_free(type);		/* can this be removed? */
 	g_free(subtype);
-	camel_folder_summary_decode_uint32(in, &count);
+	if (camel_folder_summary_decode_uint32(in, &count) == -1 || count > 500)
+		goto error;
+	    
 	for (i=0;i<count;i++) {
 		char *name, *value;
 		camel_folder_summary_decode_token(in, &name);
@@ -1942,7 +1975,13 @@ content_info_load(CamelFolderSummary *s, FILE *in)
 	camel_folder_summary_decode_uint32(in, &ci->size);
 
 	ci->childs = NULL;
-	return ci;
+
+	if (!ferror(in))
+		return ci;
+
+error:
+	camel_folder_summary_content_info_free(s, ci);
+	return NULL;
 }
 
 static int
diff --git a/camel/providers/imap/camel-imap-summary.c b/camel/providers/imap/camel-imap-summary.c
index 74a024f76..66228649b 100644
--- a/camel/providers/imap/camel-imap-summary.c
+++ b/camel/providers/imap/camel-imap-summary.c
@@ -169,20 +169,17 @@ message_info_load (CamelFolderSummary *s, FILE *in)
 	CamelImapMessageInfo *iinfo;
 
 	info = camel_imap_summary_parent->message_info_load (s, in);
-	if (!info) {
-		g_warning ("eek! encountered a NULL message info!");
-		return NULL;
-	}
-	iinfo = (CamelImapMessageInfo *)info;
+	if (info) {
+		iinfo = (CamelImapMessageInfo *)info;
 
-	if (camel_folder_summary_decode_uint32 (in, &iinfo->server_flags) == -1) {
-		/* wouldn't it just be better to default to certain server flags here? */
-		g_warning ("eek! problems decoding server flags!");
-		camel_folder_summary_info_free (s, info);
-		return NULL;
+		if (camel_folder_summary_decode_uint32 (in, &iinfo->server_flags) == -1)
+			goto error;
 	}
 
 	return info;
+error:
+	camel_folder_summary_info_free (s, info);
+	return NULL;
 }
 
 static int
diff --git a/camel/providers/local/camel-mbox-summary.c b/camel/providers/local/camel-mbox-summary.c
index 5b6274385..ab42e10df 100644
--- a/camel/providers/local/camel-mbox-summary.c
+++ b/camel/providers/local/camel-mbox-summary.c
@@ -197,11 +197,15 @@ message_info_load(CamelFolderSummary *s, FILE *in)
 	mi = ((CamelFolderSummaryClass *)camel_mbox_summary_parent)->message_info_load(s, in);
 	if (mi) {
 		CamelMboxMessageInfo *mbi = (CamelMboxMessageInfo *)mi;
-
-		camel_folder_summary_decode_off_t(in, &mbi->frompos);
+		
+		if (camel_folder_summary_decode_off_t(in, &mbi->frompos) == -1)
+			goto error;
 	}
 	
 	return mi;
+error:
+	camel_folder_summary_info_free(s, mi);
+	return NULL;
 }
 
 static int
@@ -211,9 +215,11 @@ message_info_save(CamelFolderSummary *s, FILE *out, CamelMessageInfo *mi)
 
 	io(printf("saving mbox message info\n"));
 
-	((CamelFolderSummaryClass *)camel_mbox_summary_parent)->message_info_save(s, out, mi);
+	if (((CamelFolderSummaryClass *)camel_mbox_summary_parent)->message_info_save(s, out, mi) == -1
+	    || camel_folder_summary_encode_off_t(out, mbi->frompos) == -1)
+		return -1;
 
-	return camel_folder_summary_encode_off_t(out, mbi->frompos);
+	return 0;
 }
 
 static int