+#include <cstring>
+#include <string>
+
+#ifndef APT_8_CLEANER_HEADERS
+using std::min;
+using std::vector;
+#endif
+#ifndef APT_10_CLEANER_HEADERS
+#include <apt-pkg/fileutl.h>
+#include <algorithm>
+#include <vector>
+#endif
+
+
+class FileFd;
+
+// helper class that contains hash function name
+// and hash
+class HashString
+{
+ protected:
+ std::string Type;
+ std::string Hash;
+ static const char * _SupportedHashes[10];
+
+ // internal helper
+ std::string GetHashForFile(std::string filename) const;
+
+ public:
+ HashString(std::string Type, std::string Hash);
+ HashString(std::string StringedHashString); // init from str as "type:hash"
+ HashString();
+
+ // get hash type used
+ std::string HashType() const { return Type; };
+ std::string HashValue() const { return Hash; };
+ APT_DEPRECATED_MSG("method was const-ified") std::string HashType() { return Type; };
+ APT_DEPRECATED_MSG("method was const-ified") std::string HashValue() { return Hash; };
+
+ // verify the given filename against the currently loaded hash
+ bool VerifyFile(std::string filename) const;
+
+ // generate a hash string from the given filename
+ bool FromFile(std::string filename);
+
+
+ // helper
+ std::string toStr() const; // convert to str as "type:hash"
+ bool empty() const;
+ bool usable() const;
+ bool operator==(HashString const &other) const;
+ bool operator!=(HashString const &other) const;
+
+ // return the list of hashes we support
+ static APT_CONST const char** SupportedHashes();
+};
+
+class HashStringList
+{
+ public:
+ /** find best hash if no specific one is requested
+ *
+ * @param type of the checksum to return, can be \b NULL
+ * @return If type is \b NULL (or the empty string) it will
+ * return the 'best' hash; otherwise the hash which was
+ * specifically requested. If no hash is found \b NULL will be returned.
+ */
+ HashString const * find(char const * const type) const;
+ HashString const * find(std::string const &type) const { return find(type.c_str()); }
+
+ /** finds the filesize hash and returns it as number
+ *
+ * @return beware: if the size isn't known we return \b 0 here,
+ * just like we would do for an empty file. If that is a problem
+ * for you have to get the size manually out of the list.
+ */
+ unsigned long long FileSize() const;
+
+ /** sets the filesize hash
+ *
+ * @param Size of the file
+ * @return @see #push_back
+ */
+ bool FileSize(unsigned long long const Size);
+
+ /** check if the given hash type is supported
+ *
+ * @param type to check
+ * @return true if supported, otherwise false
+ */
+ static APT_PURE bool supported(char const * const type);
+ /** add the given #HashString to the list
+ *
+ * @param hashString to add
+ * @return true if the hash is added because it is supported and
+ * not already a different hash of the same type included, otherwise false
+ */
+ bool push_back(const HashString &hashString);
+ /** @return size of the list of HashStrings */
+ size_t size() const { return list.size(); }
+
+ /** verify file against all hashes in the list
+ *
+ * @param filename to verify
+ * @return true if the file matches the hashsum, otherwise false
+ */
+ bool VerifyFile(std::string filename) const;
+
+ /** is the list empty ?
+ *
+ * @return \b true if the list is empty, otherwise \b false
+ */
+ bool empty() const { return list.empty(); }
+
+ /** has the list at least one good entry
+ *
+ * similar to #empty, but handles forced hashes.
+ *
+ * @return if no hash is forced, same result as #empty,
+ * if one is forced \b true if this has is available, \b false otherwise
+ */
+ bool usable() const;
+
+ typedef std::vector<HashString>::const_iterator const_iterator;
+
+ /** iterator to the first element */
+ const_iterator begin() const { return list.begin(); }
+
+ /** iterator to the end element */
+ const_iterator end() const { return list.end(); }
+
+ /** start fresh with a clear list */
+ void clear() { list.clear(); }
+
+ /** compare two HashStringList for similarity.
+ *
+ * Two lists are similar if at least one hashtype is in both lists
+ * and the hashsum matches. All hashes are checked by default,
+ * if one doesn't match false is returned regardless of how many
+ * matched before. If a hash is forced, only this hash is compared,
+ * all others are ignored.
+ */
+ bool operator==(HashStringList const &other) const;
+ bool operator!=(HashStringList const &other) const;
+
+ HashStringList() {}
+
+ // simplifying API-compatibility constructors
+ HashStringList(std::string const &hash) {
+ if (hash.empty() == false)
+ list.push_back(HashString(hash));
+ }
+ HashStringList(char const * const hash) {
+ if (hash != NULL && hash[0] != '\0')
+ list.push_back(HashString(hash));
+ }
+
+ private:
+ std::vector<HashString> list;
+};
+
+class PrivateHashes;
projects / apt.git / blobdiff