external/bsd/atf/dist/atf-sh/atf-sh.cpp

   1 //
   2 // Automated Testing Framework (atf)
   3 //
   4 // Copyright (c) 2010 The NetBSD Foundation, Inc.
   5 // All rights reserved.
   6 //
   7 // Redistribution and use in source and binary forms, with or without
   8 // modification, are permitted provided that the following conditions
   9 // are met:
  10 // 1. Redistributions of source code must retain the above copyright
  11 //    notice, this list of conditions and the following disclaimer.
  12 // 2. Redistributions in binary form must reproduce the above copyright
  13 //    notice, this list of conditions and the following disclaimer in the
  14 //    documentation and/or other materials provided with the distribution.
  15 //
  16 // THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  17 // CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  18 // INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  19 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20 // IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
  21 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23 // GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25 // IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  27 // IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28 //
  29
  30 extern "C" {
  31 #include <unistd.h>
  32 }
  33
  34 #include <cerrno>
  35 #include <cstdlib>
  36 #include <cstring>
  37 #include <iostream>
  38
  39 #include "atf-c++/config.hpp"
  40
  41 #include "atf-c++/detail/application.hpp"
  42 #include "atf-c++/detail/fs.hpp"
  43 #include "atf-c++/detail/sanity.hpp"
  44
  45 // ------------------------------------------------------------------------
  46 // Auxiliary functions.
  47 // ------------------------------------------------------------------------
  48
  49 namespace {
  50
  51 static
  52 std::string
  53 fix_plain_name(const char *filename)
  54 {
  55     const atf::fs::path filepath(filename);
  56     if (filepath.branch_path().str() == ".")
  57         return std::string("./") + filename;
  58     else
  59         return std::string(filename);
  60 }
  61
  62 static
  63 std::string*
  64 construct_script(const char* filename)
  65 {
  66     const std::string libexecdir = atf::config::get("atf_libexecdir");
  67     const std::string pkgdatadir = atf::config::get("atf_pkgdatadir");
  68     const std::string shell = atf::config::get("atf_shell");
  69
  70     std::string* command = new std::string();
  71     command->reserve(512);
  72     (*command) += ("Atf_Check='" + libexecdir + "/atf-check' ; " +
  73                    "Atf_Shell='" + shell + "' ; " +
  74                    ". " + pkgdatadir + "/libatf-sh.subr ; " +
  75                    ". " + fix_plain_name(filename) + " ; " +
  76                    "main \"${@}\"");
  77     return command;
  78 }
  79
  80 static
  81 const char**
  82 construct_argv(const std::string& shell, const int interpreter_argc,
  83                const char* const* interpreter_argv)
  84 {
  85     PRE(interpreter_argc >= 1);
  86     PRE(interpreter_argv[0] != NULL);
  87
  88     const std::string* script = construct_script(interpreter_argv[0]);
  89
  90     const int count = 4 + (interpreter_argc - 1) + 1;
  91     const char** argv = new const char*[count];
  92     argv[0] = shell.c_str();
  93     argv[1] = "-c";
  94     argv[2] = script->c_str();
  95     argv[3] = interpreter_argv[0];
  96
  97     for (int i = 1; i < interpreter_argc; i++)
  98         argv[4 + i - 1] = interpreter_argv[i];
  99
 100     argv[count - 1] = NULL;
 101
 102     return argv;
 103 }
 104
 105 } // anonymous namespace
 106
 107 // ------------------------------------------------------------------------
 108 // The "atf_sh" class.
 109 // ------------------------------------------------------------------------
 110
 111 class atf_sh : public atf::application::app {
 112     static const char* m_description;
 113
 114 public:
 115     atf_sh(void);
 116
 117     int main(void);
 118 };
 119
 120 const char* atf_sh::m_description =
 121     "atf-sh is a shell interpreter that extends the functionality of the "
 122     "system sh(1) with the atf-sh library.";
 123
 124 atf_sh::atf_sh(void) :
 125     app(m_description, "atf-sh(1)")
 126 {
 127 }
 128
 129 int
 130 atf_sh::main(void)
 131 {
 132     if (m_argc < 1)
 133         throw atf::application::usage_error("No test program provided");
 134
 135     const atf::fs::path script(m_argv[0]);
 136     if (!atf::fs::exists(script))
 137         throw std::runtime_error("The test program '" + script.str() + "' "
 138                                  "does not exist");
 139
 140     const std::string shell = atf::config::get("atf_shell");
 141     const char** argv = construct_argv(shell, m_argc, m_argv);
 142     // Don't bother keeping track of the memory allocated by construct_argv:
 143     // we are going to exec or die immediately.
 144
 145 #if defined(__minix) && !defined(NDEBUG)
 146     const int ret =
 147 #endif /* defined(__minix) && !defined(NDEBUG) */
 148     execv(shell.c_str(), const_cast< char** >(argv));
 149     INV(ret == -1);
 150     std::cerr << "Failed to execute " << shell << ": " << std::strerror(errno)
 151               << "\n";
 152     return EXIT_FAILURE;
 153 }
 154
 155 int
 156 main(int argc, char* const* argv)
 157 {
 158     return atf_sh().run(argc, argv);
 159 }