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diff --git a/modules/libmar/src/mar_cmdline.h b/modules/libmar/src/mar_cmdline.h
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+/* 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_CMDLINE_H__
+#define MAR_CMDLINE_H__
+
+/* We use NSPR here just to import the definition of uint32_t */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct ProductInformationBlock;
+
+/**
+ * Determines MAR file information.
+ *
+ * @param path The path of the MAR file to check.
+ * @param hasSignatureBlock Optional out parameter specifying if the MAR
+ * file has a signature block or not.
+ * @param numSignatures Optional out parameter for storing the number
+ * of signatures in the MAR file.
+ * @param hasAdditionalBlocks Optional out parameter specifying if the MAR
+ * file has additional blocks or not.
+ * @param offsetAdditionalBlocks Optional out parameter for the offset to the
+ * first additional block. Value is only valid if
+ * hasAdditionalBlocks is not equal to 0.
+ * @param numAdditionalBlocks Optional out parameter for the number of
+ * additional blocks. Value is only valid if
+ * has_additional_blocks is not equal to 0.
+ * @return 0 on success and non-zero on failure.
+ */
+int get_mar_file_info(const char *path,
+ int *hasSignatureBlock,
+ uint32_t *numSignatures,
+ int *hasAdditionalBlocks,
+ uint32_t *offsetAdditionalBlocks,
+ uint32_t *numAdditionalBlocks);
+
+/**
+ * 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
+read_product_info_block(char *path,
+ struct ProductInformationBlock *infoBlock);
+
+/**
+ * Refreshes the product information block with the new information.
+ * The input MAR must not be signed or the function call will fail.
+ *
+ * @param path The path to the MAR file whose product info block
+ * should be refreshed.
+ * @param infoBlock Out parameter for where to store the result to
+ * @return 0 on success, -1 on failure
+*/
+int
+refresh_product_info_block(const char *path,
+ struct ProductInformationBlock *infoBlock);
+
+/**
+ * Writes out a copy of the MAR at src but with the signature block stripped.
+ *
+ * @param src The path of the source MAR file
+ * @param dest The path of the MAR file to write out that
+ has no signature block
+ * @return 0 on success
+ * -1 on error
+*/
+int
+strip_signature_block(const char *src, const char * dest);
+
+/**
+ * Extracts a signature from a MAR file, base64 encodes it, and writes it out
+ *
+ * @param src The path of the source MAR file
+ * @param sigIndex The index of the signature to extract
+ * @param dest The path of file to write the signature to
+ * @return 0 on success
+ * -1 on error
+*/
+int
+extract_signature(const char *src, uint32_t sigIndex, const char * dest);
+
+/**
+ * Imports a base64 encoded signature into a MAR file
+ *
+ * @param src The path of the source MAR file
+ * @param sigIndex The index of the signature to import
+ * @param base64SigFile A file which contains the signature to import
+ * @param dest The path of the destination MAR file with replaced signature
+ * @return 0 on success
+ * -1 on error
+*/
+int
+import_signature(const char *src,
+ uint32_t sigIndex,
+ const char * base64SigFile,
+ const char *dest);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MAR_CMDLINE_H__ */