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authorTavian Barnes <tavianator@tavianator.com>2024-05-07 15:42:46 -0400
committerTavian Barnes <tavianator@tavianator.com>2024-05-07 15:42:46 -0400
commit452d6697e0f92326ab139eed4eadd9c2fd8b55ca (patch)
tree0feeb3722dcf6debb6c33c5175342bf1d70a1dba /tests/xspawn.c
parenta4299f9bc1d3e60a7e628561e8d650c2a241e1c2 (diff)
parentc5cf2cf90834f2f56b2940d2a499a1a614ebfd21 (diff)
downloadbfs-452d6697e0f92326ab139eed4eadd9c2fd8b55ca.tar.xz
Merge branch 'main' into find2fdfind2fd
Diffstat (limited to 'tests/xspawn.c')
-rw-r--r--tests/xspawn.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/tests/xspawn.c b/tests/xspawn.c
new file mode 100644
index 0000000..785ea48
--- /dev/null
+++ b/tests/xspawn.c
@@ -0,0 +1,197 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+#include "prelude.h"
+#include "tests.h"
+#include "alloc.h"
+#include "bfstd.h"
+#include "dstring.h"
+#include "xspawn.h"
+#include <stdlib.h>
+#include <string.h>
+#include <sys/wait.h>
+
+/** Duplicate the current environment. */
+static char **envdup(void) {
+ extern char **environ;
+
+ char **envp = NULL;
+ size_t envc = 0;
+
+ for (char **var = environ; ; ++var) {
+ char *copy = NULL;
+ if (*var) {
+ copy = strdup(*var);
+ if (!copy) {
+ goto fail;
+ }
+ }
+
+ char **dest = RESERVE(char *, &envp, &envc);
+ if (!dest) {
+ free(copy);
+ goto fail;
+ }
+ *dest = copy;
+
+ if (!*var) {
+ break;
+ }
+ }
+
+ return envp;
+
+fail:
+ for (size_t i = 0; i < envc; ++i) {
+ free(envp[i]);
+ }
+ free(envp);
+ return NULL;
+}
+
+/** Check that we resolve executables in $PATH correctly. */
+static bool check_use_path(bool use_posix) {
+ bool ret = true;
+
+ struct bfs_spawn spawn;
+ ret &= bfs_pcheck(bfs_spawn_init(&spawn) == 0);
+ if (!ret) {
+ goto out;
+ }
+
+ spawn.flags |= BFS_SPAWN_USE_PATH;
+ if (!use_posix) {
+ spawn.flags &= ~BFS_SPAWN_USE_POSIX;
+ }
+
+ ret &= bfs_pcheck(bfs_spawn_addopen(&spawn, 10, "bin", O_RDONLY | O_DIRECTORY, 0) == 0);
+ ret &= bfs_pcheck(bfs_spawn_adddup2(&spawn, 10, 11) == 0);
+ ret &= bfs_pcheck(bfs_spawn_addclose(&spawn, 10) == 0);
+ ret &= bfs_pcheck(bfs_spawn_addfchdir(&spawn, 11) == 0);
+ ret &= bfs_pcheck(bfs_spawn_addclose(&spawn, 11) == 0);
+ if (!ret) {
+ goto destroy;
+ }
+
+ // Check that $PATH is resolved in the parent's environment
+ char **envp;
+ ret &= bfs_pcheck(envp = envdup());
+ if (!ret) {
+ goto destroy;
+ }
+
+ // Check that $PATH is resolved after the file actions
+ char *old_path = getenv("PATH");
+ dchar *new_path = NULL;
+ if (old_path) {
+ ret &= bfs_pcheck(old_path = strdup(old_path));
+ if (!ret) {
+ goto env;
+ }
+ new_path = dstrprintf("tests:%s", old_path);
+ } else {
+ new_path = dstrdup("tests");
+ }
+ ret &= bfs_check(new_path);
+ if (!ret) {
+ goto path;
+ }
+
+ ret &= bfs_pcheck(setenv("PATH", new_path, true) == 0);
+ if (!ret) {
+ goto path;
+ }
+
+ char *argv[] = {"xspawnee", old_path, NULL};
+ pid_t pid = bfs_spawn("xspawnee", &spawn, argv, envp);
+ ret &= bfs_pcheck(pid >= 0, "bfs_spawn()");
+ if (!ret) {
+ goto unset;
+ }
+
+ int wstatus;
+ ret &= bfs_pcheck(xwaitpid(pid, &wstatus, 0) == pid)
+ && bfs_check(WIFEXITED(wstatus));
+ if (ret) {
+ int wexit = WEXITSTATUS(wstatus);
+ ret &= bfs_check(wexit == EXIT_SUCCESS, "xspawnee: exit(%d)", wexit);
+ }
+
+unset:
+ if (old_path) {
+ ret &= bfs_pcheck(setenv("PATH", old_path, true) == 0);
+ } else {
+ ret &= bfs_pcheck(unsetenv("PATH") == 0);
+ }
+path:
+ dstrfree(new_path);
+ free(old_path);
+env:
+ for (char **var = envp; *var; ++var) {
+ free(*var);
+ }
+ free(envp);
+destroy:
+ ret &= bfs_pcheck(bfs_spawn_destroy(&spawn) == 0);
+out:
+ return ret;
+}
+
+/** Check path resolution of non-existent executables. */
+static bool check_enoent(bool use_posix) {
+ bool ret = true;
+
+ struct bfs_spawn spawn;
+ ret &= bfs_pcheck(bfs_spawn_init(&spawn) == 0);
+ if (!ret) {
+ goto out;
+ }
+
+ spawn.flags |= BFS_SPAWN_USE_PATH;
+ if (!use_posix) {
+ spawn.flags &= ~BFS_SPAWN_USE_POSIX;
+ }
+
+ char *argv[] = {"eW6f5RM9Qi", NULL};
+ pid_t pid = bfs_spawn("eW6f5RM9Qi", &spawn, argv, NULL);
+ ret &= bfs_pcheck(pid < 0 && errno == ENOENT, "bfs_spawn()");
+
+ ret &= bfs_pcheck(bfs_spawn_destroy(&spawn) == 0);
+out:
+ return ret;
+}
+
+static bool check_resolve(void) {
+ bool ret = true;
+ char *exe;
+
+ exe = bfs_spawn_resolve("sh");
+ ret &= bfs_pcheck(exe, "bfs_spawn_resolve('sh')");
+ free(exe);
+
+ exe = bfs_spawn_resolve("/bin/sh");
+ ret &= bfs_pcheck(exe && strcmp(exe, "/bin/sh") == 0);
+ free(exe);
+
+ exe = bfs_spawn_resolve("bin/tests/xspawnee");
+ ret &= bfs_pcheck(exe && strcmp(exe, "bin/tests/xspawnee") == 0);
+ free(exe);
+
+ ret &= bfs_pcheck(!bfs_spawn_resolve("eW6f5RM9Qi") && errno == ENOENT);
+
+ return ret;
+}
+
+bool check_xspawn(void) {
+ bool ret = true;
+
+ ret &= check_use_path(true);
+ ret &= check_use_path(false);
+
+ ret &= check_enoent(true);
+ ret &= check_enoent(false);
+
+ ret &= check_resolve();
+
+ return ret;
+}