Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

1 files changed, 206 insertions, 0 deletions

diff --git a/lib/libesg/encapsulation/container.c b/lib/libesg/encapsulation/container.c
new file mode 100644
index 0000000..15b17bf
--- /dev/null
+++ b/lib/libesg/encapsulation/container.c
@@ -0,0 +1,206 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <libesg/encapsulation/container.h>
+#include <libesg/encapsulation/fragment_management_information.h>
+#include <libesg/encapsulation/data_repository.h>
+#include <libesg/encapsulation/string_repository.h>
+#include <libesg/representation/init_message.h>
+#include <libesg/transport/session_partition_declaration.h>
+
+struct esg_container *esg_container_decode(uint8_t *buffer, uint32_t size) {
+	uint32_t pos;
+	struct esg_container *container;
+	struct esg_container_structure *structure;
+	struct esg_container_structure *last_structure;
+	uint8_t structure_index;
+
+	if ((buffer == NULL) || (size <= 1)) {
+		return NULL;
+	}
+
+	pos = 0;
+
+	container = (struct esg_container *) malloc(sizeof(struct esg_container));
+	memset(container, 0, sizeof(struct esg_container));
+
+	// Container header
+	container->header = (struct esg_container_header *) malloc(sizeof(struct esg_container_header));
+	memset(container->header, 0, sizeof(struct esg_container_header));
+
+	container->header->num_structures = buffer[pos];
+	pos += 1;
+
+	if (size < pos + (container->header->num_structures * 8)) {
+		esg_container_free(container);
+		return NULL;
+	}
+
+	last_structure = NULL;
+	for (structure_index = 0; structure_index < container->header->num_structures; structure_index++) {
+		structure = (struct esg_container_structure *) malloc(sizeof(struct esg_container_structure));
+		memset(structure, 0, sizeof(struct esg_container_structure));
+		structure->_next = NULL;
+
+		if (last_structure == NULL) {
+			container->header->structure_list = structure;
+		} else {
+			last_structure->_next = structure;
+		}
+		last_structure = structure;
+
+		structure->type = buffer[pos];
+		pos += 1;
+
+		structure->id = buffer[pos];
+		pos += 1;
+
+		structure->ptr = (buffer[pos] << 16) | (buffer[pos+1] << 8) | buffer[pos+2];
+		pos += 3;
+
+		structure->length = (buffer[pos] << 16) | (buffer[pos+1] << 8) | buffer[pos+2];
+		pos += 3;
+
+		if (size < (structure->ptr + structure->length)) {
+			esg_container_free(container);
+			return NULL;
+		}
+
+		// Decode structure
+		switch (structure->type) {
+			case 0x01: {
+				switch (structure->id) {
+					case 0x00: {
+						structure->data = (void *) esg_encapsulation_structure_decode(buffer + structure->ptr, structure->length);
+						break;
+					}
+					default: {
+						esg_container_free(container);
+						return NULL;
+					}
+				}
+				break;
+			}
+			case 0x02: {
+				switch (structure->id) {
+					case 0x00: {
+						structure->data = (void *) esg_string_repository_decode(buffer + structure->ptr, structure->length);
+						break;
+					}
+					default: {
+						esg_container_free(container);
+						return NULL;
+					}
+				}
+				break;
+			}
+			case 0x03: {
+				//TODO
+				break;
+			}
+			case 0x04: {
+				//TODO
+				break;
+			}
+			case 0x05: {
+				//TODO
+				break;
+			}
+			case 0xE0: {
+				switch (structure->id) {
+					case 0x00: {
+						structure->data = (void *) esg_data_repository_decode(buffer + structure->ptr, structure->length);
+						break;
+					}
+					default: {
+						esg_container_free(container);
+						return NULL;
+					}
+				}
+				break;
+			}
+			case 0xE1: {
+				switch (structure->id) {
+					case 0xFF: {
+						structure->data = (void *) esg_session_partition_declaration_decode(buffer + structure->ptr, structure->length);
+						break;
+					}
+					default: {
+						esg_container_free(container);
+						return NULL;
+					}
+				}
+				break;
+			}
+			case 0xE2: {
+				switch (structure->id) {
+					case 0x00: {
+						structure->data = (void *) esg_init_message_decode(buffer + structure->ptr, structure->length);
+						break;
+					}
+					default: {
+						esg_container_free(container);
+						return NULL;
+					}
+				}
+				break;
+			}
+			default: {
+				esg_container_free(container);
+				return NULL;
+			}
+		}
+	}
+
+	// Container structure body
+	container->structure_body_ptr = pos;
+	container->structure_body_length = size - pos;
+	container->structure_body = (uint8_t *) malloc(size - pos);
+	memcpy(container->structure_body, buffer + pos, size - pos);
+
+	return container;
+}
+
+void esg_container_free(struct esg_container *container) {
+	struct esg_container_structure *structure;
+	struct esg_container_structure *next_structure;
+
+	if (container == NULL) {
+		return;
+    }
+
+	if (container->header) {
+		for(structure = container->header->structure_list; structure; structure = next_structure) {
+			next_structure = structure->_next;
+			free(structure);
+		}
+
+		free(container->header);
+	}
+
+	if (container->structure_body) {
+		free(container->structure_body);
+	}
+
+	free(container);
+}