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https://github.com/libsdl-org/SDL.git
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90e01040c5
Also marked the existing functions as unsafe, as they can cause crashes if used in multi-threaded applications. As a bonus, since the new functions are hashtable based, hint environment lookups are much faster.
85 lines
3.1 KiB
C
85 lines
3.1 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#include "../SDL_sysurl.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <errno.h>
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#ifdef USE_POSIX_SPAWN
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#include <spawn.h>
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extern char **environ;
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#endif
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bool SDL_SYS_OpenURL(const char *url)
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{
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const pid_t pid1 = fork();
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if (pid1 == 0) { // child process
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#ifdef USE_POSIX_SPAWN
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pid_t pid2;
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const char *args[] = { "xdg-open", url, NULL };
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// Clear LD_PRELOAD so Chrome opens correctly when this application is launched by Steam
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SDL_unsetenv_unsafe("LD_PRELOAD");
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if (posix_spawnp(&pid2, args[0], NULL, NULL, (char **)args, environ) == 0) {
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// Child process doesn't wait for possibly-blocking grandchild.
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_exit(EXIT_SUCCESS);
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} else {
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_exit(EXIT_FAILURE);
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}
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#else
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pid_t pid2;
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// Clear LD_PRELOAD so Chrome opens correctly when this application is launched by Steam
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SDL_unsetenv_unsafe("LD_PRELOAD");
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// Notice this is vfork and not fork!
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pid2 = vfork();
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if (pid2 == 0) { // Grandchild process will try to launch the url
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execlp("xdg-open", "xdg-open", url, NULL);
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_exit(EXIT_FAILURE);
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} else if (pid2 < 0) { // There was an error forking
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_exit(EXIT_FAILURE);
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} else {
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// Child process doesn't wait for possibly-blocking grandchild.
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_exit(EXIT_SUCCESS);
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}
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#endif // USE_POSIX_SPAWN
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} else if (pid1 < 0) {
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return SDL_SetError("fork() failed: %s", strerror(errno));
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} else {
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int status;
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if (waitpid(pid1, &status, 0) == pid1) {
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if (WIFEXITED(status)) {
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if (WEXITSTATUS(status) == 0) {
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return true; // success!
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} else {
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return SDL_SetError("xdg-open reported error or failed to launch: %d", WEXITSTATUS(status));
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}
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} else {
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return SDL_SetError("xdg-open failed for some reason");
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}
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} else {
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return SDL_SetError("Waiting on xdg-open failed: %s", strerror(errno));
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}
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}
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}
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