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Expand support of POSIX temp folders
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Semphris
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Oct 14, 2024
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| /* | ||
| Simple DirectMedia Layer | ||
| Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org> | ||
| This software is provided 'as-is', without any express or implied | ||
| warranty. In no event will the authors be held liable for any damages | ||
| arising from the use of this software. | ||
| Permission is granted to anyone to use this software for any purpose, | ||
| including commercial applications, and to alter it and redistribute it | ||
| freely, subject to the following restrictions: | ||
| 1. The origin of this software must not be misrepresented; you must not | ||
| claim that you wrote the original software. If you use this software | ||
| in a product, an acknowledgment in the product documentation would be | ||
| appreciated but is not required. | ||
| 2. Altered source versions must be plainly marked as such, and must not be | ||
| misrepresented as being the original software. | ||
| 3. This notice may not be removed or altered from any source distribution. | ||
| */ | ||
|
|
||
| #include "SDL_internal.h" | ||
| #include "../SDL_sysfilesystem.h" | ||
|
|
||
| SDL_IOStream *SDL_SYS_CreateSafeTempFile(void) | ||
| { | ||
| SDL_Unsupported(); | ||
| return NULL; | ||
| } | ||
|
|
||
| char *SDL_SYS_CreateUnsafeTempFile(void) | ||
| { | ||
| SDL_Unsupported(); | ||
| return NULL; | ||
| } | ||
|
|
||
| char *SDL_SYS_CreateTempFolder(void) | ||
| { | ||
| SDL_Unsupported(); | ||
| return NULL; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| /* | ||
| Simple DirectMedia Layer | ||
| Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org> | ||
| This software is provided 'as-is', without any express or implied | ||
| warranty. In no event will the authors be held liable for any damages | ||
| arising from the use of this software. | ||
| Permission is granted to anyone to use this software for any purpose, | ||
| including commercial applications, and to alter it and redistribute it | ||
| freely, subject to the following restrictions: | ||
| 1. The origin of this software must not be misrepresented; you must not | ||
| claim that you wrote the original software. If you use this software | ||
| in a product, an acknowledgment in the product documentation would be | ||
| appreciated but is not required. | ||
| 2. Altered source versions must be plainly marked as such, and must not be | ||
| misrepresented as being the original software. | ||
| 3. This notice may not be removed or altered from any source distribution. | ||
| */ | ||
|
|
||
| #include "SDL_internal.h" | ||
| #include "../SDL_sysfilesystem.h" | ||
| #include "../../file/SDL_iostream_c.h" | ||
|
|
||
| #include <unistd.h> | ||
| #include <string.h> | ||
| #include <errno.h> | ||
|
|
||
| SDL_IOStream *SDL_SYS_CreateSafeTempFile(void) | ||
| { | ||
| FILE *file = tmpfile(); | ||
|
|
||
| if (!file) { | ||
| SDL_SetError("Could not tmpfile(): %s", strerror(errno)); | ||
| return NULL; | ||
| } | ||
|
|
||
| return SDL_IOFromFP(file, true); | ||
| } | ||
|
|
||
| char *SDL_SYS_CreateUnsafeTempFile(void) | ||
| { | ||
| /* TODO: Check for possible alternatives to /tmp, like $TMP */ | ||
| char template[] = "/tmp/tmp.XXXXXX"; | ||
|
|
||
| char *file = SDL_strdup(template); | ||
|
|
||
| if (!file) { | ||
| return NULL; | ||
| } | ||
|
|
||
| int fd = mkstemp(file); | ||
|
|
||
| if (fd < 0) { | ||
| SDL_free(file); | ||
| SDL_SetError("Could not mkstemp(): %s", strerror(errno)); | ||
| return NULL; | ||
| } | ||
|
|
||
| /* Normal usage of mkstemp() would use the file descriptor rather than the | ||
| path, to avoid issues. In this function, security is assumed to be | ||
| unimportant, so no need to worry about it. */ | ||
| /* See https://stackoverflow.com/questions/27680807/mkstemp-is-it-safe-to-close-descriptor-and-reopen-it-again */ | ||
| close(fd); | ||
|
|
||
| return file; | ||
| } | ||
|
|
||
| char *SDL_SYS_CreateTempFolder(void) | ||
| { | ||
| /* TODO: Check for possible alternatives to /tmp, like $TMP */ | ||
| char template[] = "/tmp/tmp.XXXXXX"; | ||
|
|
||
| char *folder = SDL_strdup(template); | ||
|
|
||
| if (!folder) { | ||
| return NULL; | ||
| } | ||
|
|
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| char *res = mkdtemp(folder); | ||
|
|
||
| if (!res) { | ||
| SDL_free(folder); | ||
| SDL_SetError("Could not mkdtemp(): %s", strerror(errno)); | ||
| return NULL; | ||
| } | ||
|
|
||
| return folder; | ||
| } |
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