jack2/windows/JackWinServerLaunch.cpp at develop · jackaudio/jack2 · GitHub

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This program is free software; you can redistribute it and/or modify

it under the terms of the GNU Lesser General Public License as published by

the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser 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.

#include "JackChannel.h"

#include "JackLibGlobals.h"

#include "JackServerLaunch.h"

#include "JackPlatformPlug.h"

using namespace Jack;

#include <shlobj.h>

#include <process.h>

#include <string.h>

#include <fcntl.h>

#include <io.h>

#if defined(_MSC_VER) || defined(__MINGW__) || defined(__MINGW32__)

static char*

find_path_to_jackdrc(char *path_to_jackdrc)

{

char user_jackdrc[1024];

char *ret = NULL;

user_jackdrc[0] = user_jackdrc[1] = 0; // Initialise

if (S_OK == SHGetFolderPath(NULL, CSIDL_PROFILE, NULL, SHGFP_TYPE_CURRENT, user_jackdrc))

{

// The above call should have given us the path to the user's home folder

char ch = user_jackdrc[strlen(user_jackdrc)-1];

if (('/' != ch) && ('\\' != ch))

strcat(user_jackdrc, "\\");

if (user_jackdrc[1] == ':')

{

// Assume we have a valid path

strcat(user_jackdrc, ".jackdrc");

strcpy(path_to_jackdrc, user_jackdrc);

ret = path_to_jackdrc;

}

else

path_to_jackdrc[0] = '\0';

}

else

path_to_jackdrc[0] = '\0';

return (ret);

}

#else

static char*

find_path_to_jackdrc(char *path_to_jackdrc)

{

return 0;

}

#endif

/* 'start_server_aux()' - this function might need to be modified (though probably

* not) to cope with compilers other than MSVC (e.g. MinGW). The function

* 'find_path_to_jackdrc()' might also need to be written for MinGW, though for

* Cygwin, JackPosixServerLaunch.cpp can be used instead of this file.

#include <direct.h>

static int start_server_aux(const char* server_name)

{

FILE* fp = 0;

size_t pos = 0;

size_t result = 0;

int i = 0;

int good = 0;

int ret = 0;

char* command = 0;

char** argv = 0;

char* p;

char* back_slash;

char* forward_slash;

char arguments [256];

char buffer [MAX_PATH];

char filename [MAX_PATH];

char curr_wd [MAX_PATH];

curr_wd[0] = '\0';

if (find_path_to_jackdrc(filename))

fp = fopen(filename, "r");

/* if still not found, check old config name for backwards compatibility */

/* JE - hopefully won't be needed for the Windows build

if (!fp) {

fp = fopen("/etc/jackd.conf", "r");

}

if (fp) {

arguments[0] = '\0';

fgets(filename, MAX_PATH, fp);

_strlwr(filename);

if ((p = strstr(filename, ".exe"))) {

p += 4;

*p = '\0';

pos = (size_t)(p - filename);

fseek(fp, 0, SEEK_SET);

if ((command = (char*)malloc(pos+1)))

ret = fread(command, 1, pos, fp);

if (ret && !ferror(fp)) {

command[pos] = '\0'; // NULL terminator

back_slash = strrchr(command, '\\');

forward_slash = strrchr(command, '/');

if (back_slash > forward_slash)

p = back_slash + 1;

else

p = forward_slash + 1;

strcpy(buffer, p);

while (ret != 0 && ret != EOF) {

strcat(arguments, buffer);

strcat(arguments, " ");

ret = fscanf(fp, "%s", buffer);

}

if (strlen(arguments) > 0) {

good = 1;

}

fclose(fp);

}

if (!good) {

strcpy(buffer, JACK_LOCATION "/jackd.exe");

command = (char*)malloc((strlen(buffer))+1);

strcpy(command, buffer);

strncpy(arguments, "jackd.exe -S -d " JACK_DEFAULT_DRIVER, 255);

}

int buffer_termination;

bool verbose_mode = false;

argv = (char**)malloc(255);

pos = 0;

while (1) {

/* insert -T and -n server_name in front of arguments */

if (i == 1) {

argv[i] = (char*)malloc(strlen ("-T") + 1);

strcpy (argv[i++], "-T");

if (server_name) {

size_t optlen = strlen("-n");

char* buf = (char*)malloc(optlen + strlen(server_name) + 1);

strcpy(buf, "-n");

strcpy(buf + optlen, server_name);

argv[i++] = buf;

}

// Only get the next character if there's more than 1 character

if ((pos < strlen(arguments)) && (arguments[pos+1]) && (arguments[pos+1] != ' ')) {

strncpy(buffer, arguments + pos++, 1);

buffer_termination = 1;

} else {

buffer[0] = '\0';

buffer_termination = 0;

}

buffer[1] = '\0';

if (buffer[0] == '\"')

result = strcspn(arguments + pos, "\"");

else

result = strcspn(arguments + pos, " ");

if (0 == result)

break;

else

{

strcat(buffer, arguments + pos);

// Terminate the buffer

buffer[result + buffer_termination] = '\0';

if (buffer[0] == '\"') {

strcat(buffer, "\"");

++result;

}

argv[i] = (char*)malloc(strlen(buffer) + 1);

strcpy(argv[i], buffer);

pos += (result + 1);

++i;

if ((0 == strcmp(buffer, "-v")) || (0 == strcmp(buffer, "--verbose")))

verbose_mode = true;

}

argv[i] = 0;

#ifdef SUPPORT_PRE_1_9_8_SERVER

// Get the current working directory

if (_getcwd(curr_wd, MAX_PATH)) {

strcpy(temp_wd, command);

back_slash = strrchr(temp_wd, '\\');

forward_slash = strrchr(temp_wd, '/');

if (back_slash > forward_slash)

p = back_slash;

else

p = forward_slash;

*p = '\0';

// Accommodate older versions of Jack (pre v1.9.8) which

// might need to be started from their installation folder.

_chdir(temp_wd);

}

#endif

if (verbose_mode) {

// Launch the server with a console... (note that

// if the client is a console app, the server might

// also use the client's console)

ret = _spawnv(_P_NOWAIT, command, argv);

} else {

// Launch the server silently... (without a console)

ret = _spawnv(_P_DETACH, command, argv);

}

Sleep(2500); // Give it some time to launch

if ((-1) == ret)

fprintf(stderr, "Execution of JACK server (command = \"%s\") failed: %s\n", command, strerror(errno));

if (strlen(curr_wd)) {

// Change the cwd back to its original setting

_chdir(curr_wd);

}

if (command)

free(command);

if (argv) {

for (i = 0; argv[i] != 0; i++)

free (argv[i]);

free(argv);

}

return (ret == (-1) ? false : true);

}

static int start_server(const char* server_name, jack_options_t options)

{

if ((options & JackNoStartServer) || getenv("JACK_NO_START_SERVER")) {

return 1;

}

return (((-1) != (start_server_aux(server_name)) ? 0 : (-1)));

}

static int server_connect(const char* server_name)

{

JackClientChannel channel;

int res = channel.ServerCheck(server_name);

channel.Close();

JackSleep(2000); // Added by JE - 02-01-2009 (gives

// the channel some time to close)

JackSleep(500);

return res;

}

int try_start_server(jack_varargs_t* va, jack_options_t options, jack_status_t* status)

{

if (server_connect(va->server_name) < 0) {

int trys;

if (start_server(va->server_name, options)) {

int my_status1 = *status | JackFailure | JackServerFailed;

*status = (jack_status_t)my_status1;

return -1;

}

trys = 5;

do {

Sleep(1000);

if (--trys < 0) {

int my_status1 = *status | JackFailure | JackServerFailed;

*status = (jack_status_t)my_status1;

return -1;

}

} while (server_connect(va->server_name) < 0);

int my_status1 = *status | JackServerStarted;

*status = (jack_status_t)my_status1;

}

return 0;

}

jack2/windows/JackWinServerLaunch.cpp at develop · jackaudio/jack2 · GitHub

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