diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..e48961d --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,57 @@ +# Copyright (C) 2018 by Intevation GmbH +# +# This file is Free Software under the GNU GPL (v>=2) +# and comes with ABSOLUTELY NO WARRANTY! +# See LICENSE.txt for details. + +cmake_minimum_required(VERSION 2.8.8) +project(gpg4win-tools) +set(PRETTY_NAME cryp.do) + +### Generic Setup +set(GPGME_REQUIRED_VERSION "1.8.0") +set(QT_REQUIRED_VERSION "5.6.0") +set(LIBKLEO_VERSION "5.7.20") + +#Old qtmain linking behavior to be compatible with cmake versions < 2.8.11 + +if(POLICY CMP0020) + cmake_policy(SET CMP0020 OLD) +endif() + +find_package(Qt5 ${QT_REQUIRED_VERSION} CONFIG REQUIRED Widgets) + +find_package(Gpgmepp ${GPGME_REQUIRED_VERSION} CONFIG REQUIRED) +find_package(QGpgme ${GPGME_REQUIRED_VERSION} CONFIG REQUIRED) +find_package(KF5Libkleo ${LIBKLEO_VERSION} CONFIG REQUIRED) + +set(CMAKE_AUTOMOC ON) +set(CMAKE_INCLUDE_CURRENT_DIR ON) + +### Hardening flags + +if(NOT APPLE) + set(HARDENING_FLAGS " -Wall -s -fstack-protector-all -fno-exceptions") + set(HARDENING_FLAGS " ${HARDENING_FLAGS} -Wstack-protector") + set(HARDENING_FLAGS " ${HARDENING_FLAGS} --param ssp-buffer-size=4") + set(HARDENING_FLAGS " ${HARDENING_FLAGS} -D_FORTIFY_SOURCE=2 -O0") +endif(NOT APPLE) + +if(WIN32) + add_definitions(-D_WIN32_WINNT=0x0600) # Windows vista + add_definitions(-DWINVER=0x0600) + add_definitions(-DUNICODE -D_UNICODE) + add_definitions(-DMINGW_HAS_SECURE_API) # for _s functions +endif(WIN32) + +set(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS} ${HARDENING_FLAGS}") + +# Cmake does not correctly identify gcc windres when cross compiling +# making this line neccessary to set the correct flags for it. +# See: http://public.kitware.com/Bug/view.php?id=11773 +SET(CMAKE_RC_COMPILE_OBJECT + " -Ocoff ") + +#add_subdirectory(img) +### Include the actual source directories +add_subdirectory(src) diff --git a/LICENSE.txt b/LICENSE.txt new file mode 100644 index 0000000..630ff2f --- /dev/null +++ b/LICENSE.txt @@ -0,0 +1,346 @@ +NOTE! The GPL below is copyrighted by the Free Software Foundation, but +the instance of code that it refers to (the kde programs) are copyrighted +by the authors who actually wrote it. + +--------------------------------------------------------------------------- + + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. 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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) 19yy + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) 19yy name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt new file mode 100644 index 0000000..c9149c9 --- /dev/null +++ b/src/CMakeLists.txt @@ -0,0 +1,13 @@ +# Copyright (C) 2018 Intevation GmbH +# +# This file is Free Software under the GNU GPL (v>=2) +# and comes with ABSOLUTELY NO WARRANTY! +# See LICENSE.txt for details. + +include_directories(${Qt5Core_INCLUDE_DIRS}) + +include_directories(${CMAKE_CURRENT_SOURCE_DIR}) + +include_directories(util) + +add_subdirectory(resolver) diff --git a/src/resolver/CMakeLists.txt b/src/resolver/CMakeLists.txt new file mode 100644 index 0000000..3905f4c --- /dev/null +++ b/src/resolver/CMakeLists.txt @@ -0,0 +1,28 @@ +# Copyright (C) 2018 Intevation GmbH +# +# This file is Free Software under the GNU GPL (v>=2) +# and comes with ABSOLUTELY NO WARRANTY! +# See LICENSE.txt for details. + +set(EXECUTABLE_NAME "resolver") + +set(EXECUTABLE_SRC + main.cpp + resolver.cpp + ${CMAKE_SOURCE_DIR}/src//util/strhelp.c +) + +add_executable(${EXECUTABLE_NAME} + ${_add_executable_params} + ${EXECUTABLE_SRC} +) + +target_link_libraries(${EXECUTABLE_NAME} + Qt5::Widgets + Gpgmepp + QGpgme +) + +if (WIN32) + set_target_properties(${PROJECT_NAME} PROPERTIES LINK_FLAGS "-municode") +endif(WIN32) diff --git a/src/resolver/main.cpp b/src/resolver/main.cpp new file mode 100644 index 0000000..e6cc83f --- /dev/null +++ b/src/resolver/main.cpp @@ -0,0 +1,149 @@ +/* Copyright (C) 2018 by Intevation GmbH + * + * This file is Free Software under the GNU GPL (v>=2) + * and comes with ABSOLUTELY NO WARRANTY! + * See LICENSE.txt for details. + */ + +/** @file Main entry point for the application. + */ +#include "strhelp.h" +#include "resolver-options.h" + +#include "resolver.h" + +#include +#include + +#include + +#include +#include +#include + +#ifdef Q_OS_WIN + #include + #include +#endif + +#ifndef APPNAME +#define APPNAME "Resolver" +#endif + +#ifndef VERSION +#define VERSION "0.0" +#endif + +bool g_debug = false; + +QtMessageHandler g_default_msg_handler = NULL; + +void filterDebugOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg) +{ + if (!g_debug && type == QtDebugMsg) { + return; + } + + if (g_default_msg_handler) { + (*g_default_msg_handler)(type, context, msg); + } +} + +int realMain(int argc, char **argv); + +#if defined(WIN32) && defined(UNICODE) + +/** @brief Unicode entry point. + * + * Converts arguments to UTF-8 and executes the real + * entry point realMain. + */ +int wmain(int argc, wchar_t **argv, wchar_t **envp) +{ + char **utf8args = NULL; + + utf8args = (char**) xmalloc0 ((argc + 1) * sizeof(char*)); + + for (int i = 0; i < argc; i++) { + utf8args[i] = wchar_to_utf8(argv[i], wcslen(argv[i])); + if (utf8args[i] == NULL) { + printf ("Fatal: could not convert arguments to UTF-8.\n"); + exit(-1); + } + } + int ret = realMain(argc, utf8args); + strv_free(utf8args); + + return ret; +} +#else +int main(int argc, char **argv) +{ + return realMain(argc, argv); +} +#endif + +/** @brief The real entry point to the application. + * + * @param [in] argc the count of the arguments. + * @param [in] argv On GNU/Linux this function expects argv to be in the + * native system encoding. On Windows the arguments + * shall be UTF-8 + * + * @returns 0 on success an error code otherwise. */ +int realMain(int argc, char **argv) +{ + /* QApplication setup */ + Resolver app(argc, argv); + QApplication::setOrganizationName(QStringLiteral(APPNAME)); + QApplication::setApplicationName(QStringLiteral(APPNAME)); + QApplication::setApplicationVersion(QStringLiteral(VERSION)); + +#if 0 + /* Setup translations */ + QTranslator translator; + if (QLocale::system().name() == "C") { + /* Useful for testing / development as the primary target is german */ + translator.load(":/l10n/main_de_DE"); + } else { + translator.load(":/l10n/main_" + QLocale::system().name()); + } + app.installTranslator(&translator); +#endif + + /* Parse the command line */ + QCommandLineParser parser; + options(parser); + +#ifdef Q_OS_WIN + auto oldCodec = QTextCodec::codecForLocale(); + QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8")); +#endif + parser.process(app); +#ifdef Q_OS_WIN + QTextCodec::setCodecForLocale(oldCodec); +#endif + + g_debug = parser.isSet("debug"); + g_default_msg_handler = qInstallMessageHandler(filterDebugOutput); + + // Initialize GpgME + const GpgME::Error gpgmeInitError = GpgME::initializeLibrary(0); + + if (gpgmeInitError) { + QMessageBox::critical(nullptr, QObject::tr("Installation Error"), + QObject::tr("Could not initialize GPGME.") + "
" + + QObject::tr("Please reinstall") + " " APPNAME "."); + return EXIT_FAILURE; + } + + // Go with the app + const QString err = app.newInstance(parser); + if (!err.isEmpty()) { + std::cerr << QObject::tr("Invalid arguments: %1").arg(err).toLocal8Bit().constData() << "\n"; + return EXIT_FAILURE; + } + + app.exec(); + return EXIT_SUCCESS; +} diff --git a/src/resolver/resolver-options.h b/src/resolver/resolver-options.h new file mode 100644 index 0000000..e588e01 --- /dev/null +++ b/src/resolver/resolver-options.h @@ -0,0 +1,40 @@ +#ifndef RESOLVER_OPTIONS +#define RESOLVER_OPTIONS +/* Copyright (C) 2018 by Intevation GmbH + * + * This file is Free Software under the GNU GPL (v>=2) + * and comes with ABSOLUTELY NO WARRANTY! + * See LICENSE.txt for details. + */ + +#include +#include + +/** @file Commandline options*/ +static void options(QCommandLineParser &parser) +{ + QList options; + + options + << QCommandLineOption(QStringList() << QStringLiteral("debug"), + QStringLiteral("Print debug output.")) + << QCommandLineOption(QStringLiteral("protocol"), + QStringLiteral("Specify a forced protocol"), + QStringLiteral("pgp or cms")) + << QCommandLineOption(QStringLiteral("sender"), + QStringLiteral("The sender"), + QStringLiteral("sender mailbox")) + << QCommandLineOption(QStringLiteral("sign"), + QStringLiteral("Should be signed")); + + for (const auto &opt: options) { + parser.addOption(opt); + } + parser.addVersionOption(); + parser.addHelpOption(); + + parser.addPositionalArgument(QStringLiteral("recipients"), + QStringLiteral("Recipient Mailboxes"), + QStringLiteral("[recipients]")); +} +#endif // RESOLVER_OPTIONS diff --git a/src/resolver/resolver.cpp b/src/resolver/resolver.cpp new file mode 100644 index 0000000..4e06fdb --- /dev/null +++ b/src/resolver/resolver.cpp @@ -0,0 +1,34 @@ +/* Copyright (C) 2018 by Intevation GmbH + * + * This file is Free Software under the GNU GPL (v>=2) + * and comes with ABSOLUTELY NO WARRANTY! + * See LICENSE.txt for details. + */ + +#include "resolver.h" + +#include + +class Resolver::Private +{ +public: + Private(Resolver *qq): q(qq) + { + + } + + Resolver *q; +}; + +Resolver::Resolver(int &argc, char *argv[]) : + QApplication(argc, argv), + d(new Private(this)) +{ + +} + +QString Resolver::newInstance(const QCommandLineParser &parser, + const QString &workingDirectry) +{ + return QString(); +} diff --git a/src/resolver/resolver.h b/src/resolver/resolver.h new file mode 100644 index 0000000..3f43ca7 --- /dev/null +++ b/src/resolver/resolver.h @@ -0,0 +1,62 @@ +#ifndef RESOLVER_H +#define RESOLVER_H +/* Copyright (C) 2018 by Intevation GmbH + * + * This file is Free Software under the GNU GPL (v>=2) + * and comes with ABSOLUTELY NO WARRANTY! + * See LICENSE.txt for details. + */ + + +#include +#include + +class QCommandLineParser; +class QStringList; +class QString; + +/** @brief Resolver Application entry point. + * + * The Resolver application exists to resolve Mailboxes + * to key fingerprints. A typical task for a MUA. + * + * The main user of this app is GpgOL so it is tailored + * to GpgOL's needs. + * + * This is the global qApp singleton. */ +class Resolver: public QApplication +{ + Q_OBJECT +public: + /** Create a new Application obejct. You have to + * make sure to call init afterwards to get a valid object. + * This is to delay initialisation after the UniqueService + * call is done and our init / call might be forwarded to + * another instance. */ + explicit Resolver(int &argc, char *argv[]); + + static Resolver *instance() + { + return static_cast (qApp); + } + + /** Starts a new instance or a command from the command line. + * + * Handles the parser options and starts the according commands. + * The parser should have been initialized with options and + * already processed. + * + * @param parser: The command line parser to use. + * @param workingDirectory: Optional working directory for file arguments. + * + * @returns an empty QString on success. A error message otherwise. + * */ + QString newInstance(const QCommandLineParser &parser, + const QString &workingDirectory = QString()); + + +private: + class Private; + std::shared_ptr d; +}; +#endif diff --git a/src/util/strhelp.c b/src/util/strhelp.c new file mode 100644 index 0000000..6ac7fba --- /dev/null +++ b/src/util/strhelp.c @@ -0,0 +1,277 @@ +/* Copyright (C) 2015 by ETH Zürich + * Software engineering by Intevation GmbH + * + * This file is Free Software under the GNU GPL (v>=2) + * and comes with ABSOLUTELY NO WARRANTY! + * See LICENSE.txt for details. + */ +/* Needed to get asprintf */ +#define _GNU_SOURCE 1 + +/** @file See strhelp.h for documentation. */ + +#include +#include +#include +#include +#include +#include +#include + +#ifdef WIN32 +#include +#endif + +static void +out_of_core(void) +{ + fputs("\nfatal: out of memory\n", stderr); + exit(2); +} + +void * +xmalloc( size_t n ) +{ + void *p = malloc( n ); + if( !p ) + out_of_core(); + return p; +} + +void * +xmalloc0( size_t n ) +{ + void *p = malloc( n ); + if( !p ) + out_of_core(); + memset (p, 0, n); + return p; +} + +void * +xrealloc( void *a, size_t n ) +{ + void *p = realloc( a, n ); + if( !p ) + out_of_core(); + return p; +} + +char * +xstrndup( const char *string, const size_t len ) +{ + char *p = xmalloc( len + 1 ); + memcpy( p, string, len ); + p[len] = '\0'; + return p; +} + +unsigned int +strv_length (char **str_array) +{ + unsigned int i = 0; + + if (!str_array) + return 0; + + while (str_array[i]) + ++i; + + return i; +} + +void strv_append (char ***pArray, const char *string, const size_t len) +{ + unsigned int old_len = 0; + + if (!*pArray) + { + *pArray = xmalloc(2 * sizeof(char*)); + (*pArray)[0] = xstrndup(string, len); + (*pArray)[1] = NULL; + return; + } + old_len = strv_length(*pArray); + *pArray = xrealloc(*pArray, sizeof(char**) * (old_len + 2)); + + (*pArray)[old_len] = xstrndup(string, len); + (*pArray)[old_len + 1] = NULL; +} + +void +str_append_str(char **pDst, size_t *dst_len, const char *appendage, const size_t len) +{ + if (!appendage) + return; + + if (!(*pDst)) + { + *pDst = xstrndup(appendage, len); + *dst_len = len; + } + else + { + size_t new_size = (*dst_len) + len + 1; + char *p_old = *pDst; + *pDst = xmalloc(new_size); + strncpy(*pDst, p_old, *dst_len); + strncpy(*pDst + *dst_len, appendage, len); + *dst_len = new_size - 1; + (*pDst)[*dst_len] = '\0'; + free (p_old); + } +} + +void +strv_free (char **str_array) +{ + if (str_array) + { + int i; + + for (i = 0; str_array[i] != NULL; i++) + free (str_array[i]); + + free (str_array); + } +} + +bool +str_equal (char *s1, char *s2) +{ + size_t l1 = strlen(s1); + size_t l2 = strlen(s2); + if ((l1 == l2) && + (strcmp(s1, s2) == 0)) + return true; + else + return false; +} + +bool +str_starts_with (char *s1, char *s2) +{ + size_t l2 = strlen(s2); + if (strncmp(s1, s2, l2) == 0) + return true; + else + return false; +} + +void +str_trim (char **s) +{ + size_t i; + if (*s != NULL) + { + while (isspace(**s)) + (*s)++; + i = strlen(*s); + while (isspace((*s)[--i])) + (*s)[i] = '\0'; + } +} + +void +xfree (void *p) +{ + if (p) + free (p); +} + +int +xasprintf (char **strp, const char *fmt, ...) +{ + int ret; + va_list ap; + va_start(ap, fmt); + ret = vasprintf(strp, fmt, ap); + va_end(ap); + + if (ret == -1) + out_of_core(); + + return ret; +} + +#ifdef WIN32 +/* Adapted from GPGOL rev. e512053 */ +char * +wchar_to_utf8 (const wchar_t *string, size_t len) +{ + int n, ilen; + char *result; + + ilen = (int) len; + if (ilen < 0) + return NULL; + + /* Note, that CP_UTF8 is not defined in Windows versions earlier + than NT.*/ + n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, NULL, 0, NULL, NULL); + if (n < 0) + return NULL; + + result = xmalloc ((size_t)n+1); + n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, result, n, NULL, NULL); + if (n < 0) + { + xfree (result); + return NULL; + } + result[n] = 0; + return result; +} + +/* Adapted from GPGOL rev. e512053 */ +wchar_t * +utf8_to_wchar (const char *string, size_t len) +{ + int n, ilen; + wchar_t *result; + + ilen = (int) len; + if (ilen < 0) + return NULL; + + n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, NULL, 0); + if (n < 0 || n + 1 < 0) + return NULL; + + result = xmalloc ((size_t)(n+1) * sizeof *result); + n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, result, n); + if (n < 0) + { + xfree (result); + return NULL; + } + result[n] = 0; + return result; +} + +wchar_t +*acp_to_wchar (const char *string, size_t len) +{ + int n, ilen; + wchar_t *result; + + ilen = (int) len; + if (ilen < 0) + return NULL; + + n = MultiByteToWideChar (CP_ACP, 0, string, ilen, NULL, 0); + if (n < 0 || n + 1 < 0) + return NULL; + + result = xmalloc ((size_t)(n+1) * sizeof *result); + n = MultiByteToWideChar (CP_ACP, 0, string, ilen, result, n); + if (n < 0) + { + xfree (result); + return NULL; + } + result[n] = 0; + return result; +} +#endif + diff --git a/src/util/strhelp.h b/src/util/strhelp.h new file mode 100644 index 0000000..ab90958 --- /dev/null +++ b/src/util/strhelp.h @@ -0,0 +1,173 @@ +/* Copyright (C) 2015 by ETH Zürich + * Software engineering by Intevation GmbH + * + * This file is Free Software under the GNU GPL (v>=2) + * and comes with ABSOLUTELY NO WARRANTY! + * See LICENSE.txt for details. + */ +#ifndef STRHELP_H +#define STRHELP_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include + +/** + * @file strhelp.h + * @brief Helper functions for c strings and memory management + * @details strhelp contains terminating memory allocation functions and + * some conveniance functions to work with c strings or arrays of c + * strings. + */ + +/** @def To avoid that a compiler optimizes certain memset calls away */ +#define wipememory2(_ptr,_set,_len) do { \ + volatile char *_vptr=(volatile char *)(_ptr); \ + size_t _vlen=(_len); \ + while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \ + } while(0) +/** @def To avoid that a compiler optimizes certain memset calls away */ +#define wipememory(_ptr,_len) wipememory2(_ptr,0,_len) + + +void *xmalloc( size_t n ); +/** @brief like malloc but initalizes the values with 0 */ +void *xmalloc0( size_t n ); +void *xrealloc( void *a, size_t n ); +void *xcalloc( size_t n, size_t m ); +char *xstrndup( const char *string, const size_t len ); +void xfree ( void *p ); + +/** + * @brief Terminating variant of asprintf + * + * This function behaves exactly like asprintf(3) but will terminate + * when an error occures (usally that means that memoy allocation + * failed). + */ +int xasprintf (char **strp, const char *fmt, ...); + +/** + * @brief Returns the length of the given %NULL-terminated + * string array str_array. + * @param[in] str_array a %NULL-terminated array of strings + * @returns length of str_array. + */ +unsigned int strv_length (char **str_array); + +/** + * @brief append a string to a NULL terminated array of strings. + * + * @param[in,out] pArray pointer to the NULL terminated list of string pointers. + * @param[in] string pointer to the string to append to the list. + * @param[in] len length of the string to append to the list + */ +void strv_append (char ***pArray, const char *string, const size_t len); + +/** + * @brief append a string to another string. + * + * @param[in,out] pDst pointer to the string to be extended. + * @param[in,out] dst_len length of the dst string. Will be modified. + * @param[in] appendage pointer to the string to append. + * @param[in] len length of the string to append. + */ +void str_append_str (char **pDst, size_t *dst_len, const char *appendage, + const size_t len); + +/** + * @brief Frees the given %NULL-terminated string array. + * @param[in,out] str_array a %NULL-terminated array of strings + */ +void strv_free (char **str_array); + +/** + * @brief Checks whether two strings exactly match + * @param[in] s1 the first string + * @param[in] s2 the second string + * @returns true if s1 and s2 are equal + */ +bool str_equal (char *s1, char *s2); + +/** + * @brief Checks whether s2 exactly matches the beginning of s1. + * @param[in] s1 the string who's beginning is searched + * @param[in] s2 the string which is searched for + * @returns true if s1 starts with s2, false otherwise + */ +bool str_starts_with (char *s1, char *s2); + +/** + * @brief Trims all white space from the start and end of string. + * @details the start of the string is trimmed by setting *s to the + * first non white space character. The end is trimmed by setting the + * first character after the last non white space character to \0. + * @param[in,out] s ponter to the string to strip + */ +bool str_trim (char **s); + +/** @brief decode base64 encoded data + * + * The memory allocated for dest needs to be free'd by the + * caller. + * + * _Input warning:_ + * If the input contains invalid base64 characters an error + * is returned. + * + * If the input is invalid base64 but consists of valid + * base64 characters _no error_ is returned and dst contains + * the valid input up to the error. + * + * @param [out] dst Pointer to the destination. Needs to be NULL + * @param [out] dst_size Size allocated for the destination. + * @param [in] src Pointer to the base64 encoded data. + * @param [in] src_size Size of the encoded data. + * + * @returns 0 on success a polarssl error or -1 otherwise + */ +int str_base64_decode(char **dst, size_t *dst_size, char *src, + size_t src_size); + +#ifdef _WIN32 + +/** @brief convert a utf8 string to utf16 wchar + * + * @param[in] string utf8 string. Must be at least len characters long. + * @param[in] len number of characters to be converted. + * + * @returns pointer to a newly allocated wchar array. NULL on error. + * + **/ +wchar_t *utf8_to_wchar (const char *string, size_t len); + +/** @brief convert a local 8 bit (acp) string to utf16 wchar + * + * @param[in] string acp string. Must be at least len characters long. + * @param[in] len number of characters to be converted. + * + * @returns pointer to a newly allocated wchar array. NULL on error. + * + **/ +wchar_t *acp_to_wchar (const char *string, size_t len); + +/** @brief convert a utf16 string to utf8 + * + * @param[in] string utf16 string. Must be at least len characters long. + * @param[in] len number of characters to be converted. + * + * @returns pointer to a newly allocated char array. NULL on error. + * + **/ +char *wchar_to_utf8 (const wchar_t *string, size_t len); +#endif + +#ifdef __cplusplus +} +#endif + +#endif +