Add m-esr52 at 52.6.0

1 files changed, 198 insertions, 0 deletions

diff --git a/modules/libmar/src/mar.h b/modules/libmar/src/mar.h
new file mode 100644
index 000000000..98b454d94
--- /dev/null
+++ b/modules/libmar/src/mar.h
@@ -0,0 +1,198 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MAR_H__
+#define MAR_H__
+
+#include "mozilla/Assertions.h"
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* We have a MAX_SIGNATURES limit so that an invalid MAR will never
+ * waste too much of either updater's or signmar's time.
+ * It is also used at various places internally and will affect memory usage.
+ * If you want to increase this value above 9 then you need to adjust parsing
+ * code in tool/mar.c.
+*/
+#define MAX_SIGNATURES 8
+#ifdef __cplusplus
+static_assert(MAX_SIGNATURES <= 9, "too many signatures");
+#else
+MOZ_STATIC_ASSERT(MAX_SIGNATURES <= 9, "too many signatures");
+#endif
+
+struct ProductInformationBlock {
+  const char *MARChannelID;
+  const char *productVersion;
+};
+
+/**
+ * The MAR item data structure.
+ */
+typedef struct MarItem_ {
+  struct MarItem_ *next;  /* private field */
+  uint32_t offset;        /* offset into archive */
+  uint32_t length;        /* length of data in bytes */
+  uint32_t flags;         /* contains file mode bits */
+  char name[1];           /* file path */
+} MarItem;
+
+#define TABLESIZE 256
+
+struct MarFile_ {
+  FILE *fp;
+  MarItem *item_table[TABLESIZE];
+};
+
+typedef struct MarFile_ MarFile;
+
+/**
+ * Signature of callback function passed to mar_enum_items.
+ * @param mar       The MAR file being visited.
+ * @param item      The MAR item being visited.
+ * @param data      The data parameter passed by the caller of mar_enum_items.
+ * @return          A non-zero value to stop enumerating.
+ */
+typedef int (* MarItemCallback)(MarFile *mar, const MarItem *item, void *data);
+
+/**
+ * Open a MAR file for reading.
+ * @param path      Specifies the path to the MAR file to open.  This path must
+ *                  be compatible with fopen.
+ * @return          NULL if an error occurs.
+ */
+MarFile *mar_open(const char *path);
+
+#ifdef XP_WIN
+MarFile *mar_wopen(const wchar_t *path);
+#endif
+
+/**
+ * Close a MAR file that was opened using mar_open.
+ * @param mar       The MarFile object to close.
+ */
+void mar_close(MarFile *mar);
+
+/**
+ * Find an item in the MAR file by name.
+ * @param mar       The MarFile object to query.
+ * @param item      The name of the item to query.
+ * @return          A const reference to a MAR item or NULL if not found.
+ */
+const MarItem *mar_find_item(MarFile *mar, const char *item);
+
+/**
+ * Enumerate all MAR items via callback function.
+ * @param mar       The MAR file to enumerate.
+ * @param callback  The function to call for each MAR item.
+ * @param data      A caller specified value that is passed along to the
+ *                  callback function.
+ * @return          0 if the enumeration ran to completion.  Otherwise, any
+ *                  non-zero return value from the callback is returned.
+ */
+int mar_enum_items(MarFile *mar, MarItemCallback callback, void *data);
+
+/**
+ * Read from MAR item at given offset up to bufsize bytes.
+ * @param mar       The MAR file to read.
+ * @param item      The MAR item to read.
+ * @param offset    The byte offset relative to the start of the item.
+ * @param buf       A pointer to a buffer to copy the data into.
+ * @param bufsize   The length of the buffer to copy the data into.
+ * @return          The number of bytes written or a negative value if an
+ *                  error occurs.
+ */
+int mar_read(MarFile *mar, const MarItem *item, int offset, char *buf,
+             int bufsize);
+
+/**
+ * Create a MAR file from a set of files.
+ * @param dest      The path to the file to create.  This path must be
+ *                  compatible with fopen.
+ * @param numfiles  The number of files to store in the archive.
+ * @param files     The list of null-terminated file paths.  Each file
+ *                  path must be compatible with fopen.
+ * @param infoBlock The information to store in the product information block.
+ * @return          A non-zero value if an error occurs.
+ */
+int mar_create(const char *dest, 
+               int numfiles, 
+               char **files, 
+               struct ProductInformationBlock *infoBlock);
+
+/**
+ * Extract a MAR file to the current working directory.
+ * @param path      The path to the MAR file to extract.  This path must be
+ *                  compatible with fopen.
+ * @return          A non-zero value if an error occurs.
+ */
+int mar_extract(const char *path);
+
+#define MAR_MAX_CERT_SIZE (16*1024) // Way larger than necessary
+
+/* Read the entire file (not a MAR file) into a newly-allocated buffer.
+ * This function does not write to stderr. Instead, the caller should
+ * write whatever error messages it sees fit. The caller must free the returned
+ * buffer using free().
+ *
+ * @param filePath The path to the file that should be read.
+ * @param maxSize  The maximum valid file size.
+ * @param data     On success, *data will point to a newly-allocated buffer
+ *                 with the file's contents in it.
+ * @param size     On success, *size will be the size of the created buffer.
+ * 
+ * @return 0 on success, -1 on error
+ */
+int mar_read_entire_file(const char * filePath,
+                         uint32_t maxSize,
+                         /*out*/ const uint8_t * *data,
+                         /*out*/ uint32_t *size);
+
+/**
+ * Verifies a MAR file by verifying each signature with the corresponding
+ * certificate. That is, the first signature will be verified using the first
+ * certificate given, the second signature will be verified using the second
+ * certificate given, etc. The signature count must exactly match the number of
+ * certificates given, and all signature verifications must succeed.
+ * We do not check that the certificate was issued by any trusted authority. 
+ * We assume it to be self-signed.  We do not check whether the certificate 
+ * is valid for this usage.
+ * 
+ * @param mar            The already opened MAR file.
+ * @param certData       Pointer to the first element in an array of certificate
+ *                       file data.
+ * @param certDataSizes  Pointer to the first element in an array for size of
+ *                       the cert data.
+ * @param certCount      The number of elements in certData and certDataSizes
+ * @return 0 on success
+ *         a negative number if there was an error
+ *         a positive number if the signature does not verify
+ */
+int mar_verify_signatures(MarFile *mar,
+                          const uint8_t * const *certData,
+                          const uint32_t *certDataSizes,
+                          uint32_t certCount);
+
+/** 
+ * Reads the product info block from the MAR file's additional block section.
+ * The caller is responsible for freeing the fields in infoBlock
+ * if the return is successful.
+ *
+ * @param infoBlock Out parameter for where to store the result to
+ * @return 0 on success, -1 on failure
+*/
+int
+mar_read_product_info_block(MarFile *mar, 
+                            struct ProductInformationBlock *infoBlock);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* MAR_H__ */