libansilove

commit 18af8c3b004442ac6cbdd08920ec75493d9de26c
parent 169bba1abc4989fdb6b03fcf7824ea69a239c440
Author: Frederic Cambus <fred@statdns.com>
Date:   Sun, 11 Oct 2020 09:27:21 +0200

Error out early with ANSILOVE_FORMAT_ERROR in case ctx->length is 0.

Diffstat:
M
src/loaders/ansi.c
 | 
5
+++++
M
src/loaders/binary.c
 | 
5
+++++
M
src/loaders/pcboard.c
 | 
5
+++++

3 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/src/loaders/ansi.c b/src/loaders/ansi.c
@@ -57,6 +57,11 @@ ansilove_ansi(struct ansilove_ctx *ctx, struct ansilove_options *options)
 		return -1;
 	}
 
+	if (!ctx->length) {
+		ctx->error = ANSILOVE_FORMAT_ERROR;
+		goto error;
+	}
+
 	/* ladies and gentlemen, it's type declaration time */
 	struct fontStruct fontData;
 
diff --git a/src/loaders/binary.c b/src/loaders/binary.c
@@ -33,6 +33,11 @@ ansilove_binary(struct ansilove_ctx *ctx, struct ansilove_options *options)
 		return -1;
 	}
 
+	if (!ctx->length) {
+		ctx->error = ANSILOVE_FORMAT_ERROR;
+		return -1;
+	}
+
 	struct fontStruct fontData;
 
 	/* font selection */
diff --git a/src/loaders/pcboard.c b/src/loaders/pcboard.c
@@ -47,6 +47,11 @@ ansilove_pcboard(struct ansilove_ctx *ctx, struct ansilove_options *options)
 		return -1;
 	}
 
+	if (!ctx->length) {
+		ctx->error = ANSILOVE_FORMAT_ERROR;
+		goto error;
+	}
+
 	struct fontStruct fontData;
 	size_t loop = 0, structIndex = 0;