[Spice-devel] [PATCH 2/2 v4] add a program to test redirection on Windows
Frediano Ziglio
fziglio at redhat.com
Tue May 3 11:31:14 UTC 2016
>
> Frediano,
>
> On Tue, May 3, 2016 at 11:26 AM, Frediano Ziglio <fziglio at redhat.com> wrote:
> > This program attempt multiple redirection combination:
> > - passing handles using either CreateProcess or SetStdHandle;
> > - having a console or not;
> > - redirection stdout/stderr yes or not.
>
> Would worth to mention (even if it looks obvious) that the test needs
> to be executed in a native MingW (no cross compilation).
>
> If you agree, I'll add this to the commit log and push both patches.
>
Agreed.
Note that this apply to all tests in tests directory so it's not a new
issue. To execute binaries compiled with MingW you need either native
MingW or Wine (with .exe executables enabled in Linux binfmt).
Frediano
> >
> > Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
> > ---
> > tests/Makefile.am | 7 ++
> > tests/redirect-test.c | 335
> > ++++++++++++++++++++++++++++++++++++++++++++++++++
> > 2 files changed, 342 insertions(+)
> > create mode 100644 tests/redirect-test.c
> >
> > Changes since v3:
> > - moved source to tests directory;
> > - added missing config.h include;
> > - remove some unused warnings.
> >
> > diff --git a/tests/Makefile.am b/tests/Makefile.am
> > index 15907eb..a1bdf85 100644
> > --- a/tests/Makefile.am
> > +++ b/tests/Makefile.am
> > @@ -26,4 +26,11 @@ test_monitor_mapping_SOURCES = \
> > test-monitor-mapping.c \
> > $(NULL)
> >
> > +if OS_WIN32
> > +TESTS += redirect-test
> > +redirect_test_SOURCES = redirect-test.c
> > +redirect_test_LDFLAGS = -Wl,--subsystem,windows
> > +redirect_test_CPPFLAGS = $(GLIB2_CFLAGS)
> > +endif
> > +
> > -include $(top_srcdir)/git.mk
> > diff --git a/tests/redirect-test.c b/tests/redirect-test.c
> > new file mode 100644
> > index 0000000..be96cd0
> > --- /dev/null
> > +++ b/tests/redirect-test.c
> > @@ -0,0 +1,335 @@
> > +/*
> > + * Copyright (C) 2016 Red Hat, Inc.
> > + *
> > + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
> > USA
> > + */
> > +
> > +/* This small program test redirection inside Remote Viewer
> > + */
> > +
> > +#include <config.h>
> > +
> > +/* force assert to be compiler, on Windows are usually disabled */
> > +#undef NDEBUG
> > +#undef DEBUG
> > +#define DEBUG 1
> > +
> > +#include <windows.h>
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <assert.h>
> > +#include <io.h>
> > +#include <glib.h>
> > +
> > +static BOOL has_console = FALSE;
> > +static HANDLE h_console = INVALID_HANDLE_VALUE;
> > +static FILE *log_f = NULL;
> > +static int num_test = 0;
> > +
> > +static int
> > +has_inherit(HANDLE h)
> > +{
> > + DWORD flags;
> > + if (GetHandleInformation(h, &flags))
> > + return flags & HANDLE_FLAG_INHERIT;
> > + return 0;
> > +}
> > +
> > +static BOOL is_handle_valid(HANDLE h)
> > +{
> > + if (h == INVALID_HANDLE_VALUE || h == NULL)
> > + return FALSE;
> > +
> > + DWORD flags;
> > + return GetHandleInformation(h, &flags);
> > +}
> > +
> > +static int
> > +called_test(int argc G_GNUC_UNUSED, char **argv)
> > +{
> > + STARTUPINFO si;
> > + memset(&si, 0, sizeof(si));
> > + si.cb = sizeof(si);
> > + si.dwFlags = STARTF_USESTDHANDLES;
> > + GetStartupInfo(&si);
> > + fprintf(log_f, "handles %p %p - %p %p %d %d\n", si.hStdOutput,
> > si.hStdError,
> > + GetStdHandle(STD_OUTPUT_HANDLE),
> > GetStdHandle(STD_ERROR_HANDLE),
> > + has_inherit(GetStdHandle(STD_OUTPUT_HANDLE)),
> > has_inherit(GetStdHandle(STD_ERROR_HANDLE)));
> > +
> > + /* Get redirection from parent */
> > + BOOL out_valid = is_handle_valid(GetStdHandle(STD_OUTPUT_HANDLE));
> > + BOOL err_valid = is_handle_valid(GetStdHandle(STD_ERROR_HANDLE));
> > +
> > + /*
> > + * If not all output are redirected try to redirect to parent console.
> > + * If parent has no console (for instance as launched from GUI) just
> > + * rely on default (no output).
> > + */
> > + if ((!out_valid || !err_valid) &&
> > AttachConsole(ATTACH_PARENT_PROCESS)) {
> > + fprintf(log_f, "attached\n");
> > + if (!out_valid) {
> > + freopen("CONOUT$", "w", stdout);
> > + dup2(fileno(stdout), STDOUT_FILENO);
> > + }
> > + if (!err_valid) {
> > + freopen("CONOUT$", "w", stderr);
> > + dup2(fileno(stderr), STDERR_FILENO);
> > + }
> > + }
> > +
> > + printf("stdout %s line\n", argv[0]);
> > + fflush(stdout);
> > + fprintf(stderr, "stderr %s line\n", argv[0]);
> > + fflush(stderr);
> > + return 0;
> > +}
> > +
> > +static enum {
> > + METHOD_CREATEPROCESS,
> > + METHOD_STDHANDLE
> > +} redir_method = METHOD_CREATEPROCESS;
> > +
> > +static void
> > +exec(HANDLE redir_out, HANDLE redir_err)
> > +{
> > + char program[MAX_PATH+128];
> > + GetModuleFileName(NULL, program+1, MAX_PATH);
> > + program[0] = '\"';
> > + sprintf(strchr(program, 0) , "\" %d", num_test);
> > +
> > + HANDLE old_out = GetStdHandle(STD_OUTPUT_HANDLE);
> > + HANDLE old_err = GetStdHandle(STD_ERROR_HANDLE);
> > +
> > + BOOL inherit = FALSE;
> > + STARTUPINFO si;
> > + memset(&si, 0, sizeof(si));
> > + si.cb = sizeof(si);
> > + si.dwFlags = 0;
> > + si.hStdOutput = si.hStdError = si.hStdInput = INVALID_HANDLE_VALUE;
> > + if (redir_out != INVALID_HANDLE_VALUE || redir_err !=
> > INVALID_HANDLE_VALUE) {
> > + if (redir_method == METHOD_CREATEPROCESS)
> > + si.dwFlags |= STARTF_USESTDHANDLES;
> > + inherit = TRUE;
> > + if (redir_out != INVALID_HANDLE_VALUE) {
> > + SetHandleInformation(redir_out, HANDLE_FLAG_INHERIT,
> > HANDLE_FLAG_INHERIT);
> > + if (redir_method == METHOD_CREATEPROCESS) {
> > + si.hStdOutput = redir_out;
> > + } else {
> > + SetStdHandle(STD_OUTPUT_HANDLE, redir_out);
> > + }
> > + }
> > + if (redir_err != INVALID_HANDLE_VALUE) {
> > + SetHandleInformation(redir_err, HANDLE_FLAG_INHERIT,
> > HANDLE_FLAG_INHERIT);
> > + if (redir_method == METHOD_CREATEPROCESS) {
> > + si.hStdError = redir_err;
> > + } else {
> > + SetStdHandle(STD_ERROR_HANDLE, redir_err);
> > + }
> > + }
> > + }
> > +
> > + fprintf(log_f, "handles %p %p - %p %p %d %d\n", si.hStdOutput,
> > si.hStdError,
> > + GetStdHandle(STD_OUTPUT_HANDLE),
> > GetStdHandle(STD_ERROR_HANDLE),
> > + has_inherit(GetStdHandle(STD_OUTPUT_HANDLE)),
> > has_inherit(GetStdHandle(STD_ERROR_HANDLE)));
> > +
> > + fprintf(log_f, "sub command ---->\n");
> > + fclose(log_f);
> > + log_f = NULL;
> > +
> > + PROCESS_INFORMATION pi = { 0, };
> > + assert(CreateProcess(NULL, program, NULL, NULL, inherit, 0, NULL,
> > NULL, &si, &pi));
> > + CloseHandle(pi.hThread);
> > + WaitForSingleObject(pi.hProcess, INFINITE);
> > + CloseHandle(pi.hProcess);
> > +
> > + log_f = fopen("log.txt", "a");
> > + assert(log_f);
> > + setbuf(log_f, NULL);
> > + fprintf(log_f, "<---- sub command\n");
> > +
> > + SetStdHandle(STD_OUTPUT_HANDLE, old_out);
> > + SetStdHandle(STD_ERROR_HANDLE, old_err);
> > +}
> > +
> > +// simple dirty function to read first line in a file
> > +static char *
> > +read_file(const char *fn)
> > +{
> > + FILE *f = fopen(fn, "r");
> > + assert(f);
> > +
> > + // dirty but fast
> > + static char buf[1024];
> > +
> > + memset(buf, 0, sizeof(buf));
> > + if (!fgets(buf, sizeof(buf), f))
> > + memset(buf, 0, sizeof(buf));
> > +
> > + fclose(f);
> > + return buf;
> > +}
> > +
> > +static char *
> > +read_console(void)
> > +{
> > + CONSOLE_SCREEN_BUFFER_INFO csbiInfo;
> > + assert(GetConsoleScreenBufferInfo(h_console, &csbiInfo));
> > +
> > + fprintf(log_f, "size %d %d\n", csbiInfo.dwSize.X, csbiInfo.dwSize.Y);
> > + fprintf(log_f, "win %d %d %d %d\n", csbiInfo.srWindow.Left,
> > csbiInfo.srWindow.Top, csbiInfo.srWindow.Right, csbiInfo.srWindow.Bottom);
> > +
> > + COORD size;
> > + size.Y = csbiInfo.srWindow.Bottom + 1;
> > + size.X = csbiInfo.srWindow.Right + 1;
> > +
> > + COORD coord = { 0, 0 };
> > +
> > + CHAR_INFO *buf = calloc(size.Y * size.X, sizeof(CHAR_INFO));
> > + assert(buf);
> > +
> > + SMALL_RECT rect;
> > + rect.Top = 0;
> > + rect.Left = 0;
> > + rect.Bottom = size.Y - 1;
> > + rect.Right = size.X - 1;
> > +
> > + // read console content
> > + assert(ReadConsoleOutput(h_console, buf, size, coord, &rect));
> > +
> > + // convert to just text
> > + unsigned n;
> > + char *char_buf = (char *) buf;
> > + for (n = 0; n < size.X * size.Y; ++n)
> > + char_buf[n] = buf[n].Char.AsciiChar;
> > + char_buf[n] = 0;
> > +
> > + // remove additional spaces
> > + char *p;
> > + while ((p=strstr(char_buf, " ")) != NULL)
> > + memmove(p, p+1, strlen(p));
> > +
> > + return char_buf;
> > +}
> > +
> > +static void
> > +check(BOOL redir_out, BOOL redir_err)
> > +{
> > + ++num_test;
> > + fprintf(log_f, "check method %d console %d redir_out %d redir_err
> > %d\n",
> > + (int) redir_method, has_console, redir_out, redir_err);
> > +
> > + char stdout_line[64], stderr_line[64];
> > +
> > + sprintf(stdout_line, "stdout %d line", num_test);
> > + sprintf(stderr_line, "stderr %d line", num_test);
> > +
> > + DeleteFile("stdout.txt");
> > + DeleteFile("stderr.txt");
> > +
> > + HANDLE out = CreateFile("stdout.txt", GENERIC_WRITE, 0, NULL,
> > CREATE_ALWAYS, 0, NULL);
> > + assert(out != INVALID_HANDLE_VALUE);
> > + HANDLE err = CreateFile("stderr.txt", GENERIC_WRITE, 0, NULL,
> > CREATE_ALWAYS, 0, NULL);
> > + assert(err != INVALID_HANDLE_VALUE);
> > +
> > + exec(redir_out ? out : INVALID_HANDLE_VALUE,
> > + redir_err ? err : INVALID_HANDLE_VALUE);
> > +
> > + CloseHandle(out);
> > + CloseHandle(err);
> > +
> > + // check file output
> > + if (redir_out) {
> > + char *data = read_file("stdout.txt");
> > + assert(strstr(data, stdout_line) != NULL);
> > + }
> > + if (redir_err) {
> > + char *data = read_file("stderr.txt");
> > + assert(strstr(data, stderr_line) != NULL);
> > + }
> > +
> > + DeleteFile("stdout.txt");
> > + DeleteFile("stderr.txt");
> > +
> > + // check console output
> > + if (!has_console)
> > + return;
> > +
> > + char *data = read_console();
> > + fprintf(log_f, "\nconsole: %s\nstdout expected: %s\nstderr expected:
> > %s\n", data, stdout_line, stderr_line);
> > + if (!redir_out)
> > + assert(strstr(data, stdout_line) != NULL);
> > +
> > + if (!redir_err)
> > + assert(strstr(data, stderr_line) != NULL);
> > + free(data);
> > +}
> > +
> > +static void
> > +all_checks(void)
> > +{
> > + check(TRUE, FALSE);
> > + check(FALSE, TRUE);
> > + check(TRUE, TRUE);
> > +
> > + assert(AllocConsole());
> > + has_console = TRUE;
> > + h_console = GetStdHandle(STD_OUTPUT_HANDLE);
> > + fprintf(log_f, "got console handles %p %p\n", h_console,
> > GetStdHandle(STD_ERROR_HANDLE));
> > +
> > + check(FALSE, FALSE);
> > + check(TRUE, FALSE);
> > + check(FALSE, TRUE);
> > + check(TRUE, TRUE);
> > +
> > + assert(FreeConsole());
> > + has_console = FALSE;
> > + h_console = INVALID_HANDLE_VALUE;
> > +}
> > +
> > +int WINAPI WinMain(HINSTANCE hInstance G_GNUC_UNUSED, HINSTANCE
> > hPrevInstance G_GNUC_UNUSED,
> > + LPSTR lpCmdLine, int nShowCmd G_GNUC_UNUSED)
> > +{
> > + static const char cmd_seps[] = " \t\r\n\v";
> > +
> > + char *argv[10], *p;
> > + int argc = 0;
> > +
> > + // parse arguments
> > + for (p = strtok(lpCmdLine, cmd_seps); p && argc < 10; p = strtok(NULL,
> > cmd_seps))
> > + argv[argc++] = p;
> > + argv[argc] = NULL;
> > +
> > + log_f = fopen("log.txt", argc >= 1 ? "a" : "w");
> > + assert(log_f);
> > + setbuf(log_f, NULL);
> > +
> > + fprintf(log_f, "argc %d argv[0] %s \n", argc, argv[0]);
> > +
> > + if (argc >= 1) {
> > + return called_test(argc, argv);
> > + }
> > +
> > + // main program, call ourself with different arguments and settings
> > + redir_method = METHOD_CREATEPROCESS;
> > + all_checks();
> > +
> > + redir_method = METHOD_STDHANDLE;
> > + all_checks();
> > +
> > + fprintf(log_f, "everything ok\n");
> > +
> > + fclose(log_f);
> > + return 0;
> > +}
> > --
> > 2.5.5
> >
> > _______________________________________________
> > Spice-devel mailing list
> > Spice-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/spice-devel
>
>
>
> --
> Fabiano Fidêncio
>
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