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196 lines
6.1 KiB
196 lines
6.1 KiB
6 years ago
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diff -uNr pulseaudio-12.2/src/daemon/caps.c pulseaudio-12.2.mod/src/daemon/caps.c
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--- pulseaudio-12.2/src/daemon/caps.c 2018-07-13 22:06:14.000000000 +0300
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+++ pulseaudio-12.2.mod/src/daemon/caps.c 2018-09-23 11:34:28.598244818 +0300
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@@ -36,64 +36,11 @@
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#include "caps.h"
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-/* Glibc <= 2.2 has broken unistd.h */
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-#if defined(__linux__) && (__GLIBC__ <= 2 && __GLIBC_MINOR__ <= 2)
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-int setresgid(gid_t r, gid_t e, gid_t s);
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-int setresuid(uid_t r, uid_t e, uid_t s);
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-#endif
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-
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-/* Drop root rights when called SUID root */
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+/* Disable privilege dropping on Android. */
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void pa_drop_root(void) {
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-
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-#ifdef HAVE_GETUID
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- uid_t uid;
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- gid_t gid;
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-
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- pa_log_debug("Cleaning up privileges.");
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- uid = getuid();
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- gid = getgid();
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-
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-#if defined(HAVE_SETRESUID)
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- pa_assert_se(setresuid(uid, uid, uid) >= 0);
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- pa_assert_se(setresgid(gid, gid, gid) >= 0);
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-#elif defined(HAVE_SETREUID)
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- pa_assert_se(setreuid(uid, uid) >= 0);
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- pa_assert_se(setregid(gid, gid) >= 0);
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-#else
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- pa_assert_se(setuid(uid) >= 0);
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- pa_assert_se(seteuid(uid) >= 0);
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- pa_assert_se(setgid(gid) >= 0);
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- pa_assert_se(setegid(gid) >= 0);
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-#endif
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-
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- pa_assert_se(getuid() == uid);
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- pa_assert_se(geteuid() == uid);
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- pa_assert_se(getgid() == gid);
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- pa_assert_se(getegid() == gid);
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-
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- if (uid != 0)
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- pa_drop_caps();
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-#endif
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+ return;
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}
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void pa_drop_caps(void) {
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-#ifdef HAVE_SYS_CAPABILITY_H
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-#if defined(__linux__)
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- cap_t caps;
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- pa_assert_se(caps = cap_init());
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- pa_assert_se(cap_clear(caps) == 0);
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- pa_assert_se(cap_set_proc(caps) == 0);
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- pa_assert_se(cap_free(caps) == 0);
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-#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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- /* FreeBSD doesn't have this functionality, even though sys/capability.h is
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- * available. See https://bugs.freedesktop.org/show_bug.cgi?id=72580 */
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- pa_log_warn("FreeBSD cannot drop extra capabilities, implementation needed.");
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-#else
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-#error "Don't know how to do capabilities on your system. Please send a patch."
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-#endif /* __linux__ */
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-#else /* HAVE_SYS_CAPABILITY_H */
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- pa_log_warn("Normally all extra capabilities would be dropped now, but "
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- "that's impossible because PulseAudio was built without "
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- "capabilities support.");
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-#endif
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+ return;
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}
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diff -uNr pulseaudio-12.2/src/daemon/main.c pulseaudio-12.2.mod/src/daemon/main.c
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--- pulseaudio-12.2/src/daemon/main.c 2018-07-16 17:40:33.000000000 +0300
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+++ pulseaudio-12.2.mod/src/daemon/main.c 2018-09-23 11:32:53.513876685 +0300
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@@ -147,119 +147,11 @@
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}
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}
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-#if defined(HAVE_PWD_H) && defined(HAVE_GRP_H)
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-
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+// Disable privilege dropping on Android.
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static int change_user(void) {
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- struct passwd *pw;
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- struct group * gr;
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- int r;
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-
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- /* This function is called only in system-wide mode. It creates a
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- * runtime dir in /var/run/ with proper UID/GID and drops privs
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- * afterwards. */
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-
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- if (!(pw = getpwnam(PA_SYSTEM_USER))) {
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- pa_log(_("Failed to find user '%s'."), PA_SYSTEM_USER);
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- return -1;
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- }
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-
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- if (!(gr = getgrnam(PA_SYSTEM_GROUP))) {
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- pa_log(_("Failed to find group '%s'."), PA_SYSTEM_GROUP);
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- return -1;
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- }
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-
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- pa_log_info("Found user '%s' (UID %lu) and group '%s' (GID %lu).",
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- PA_SYSTEM_USER, (unsigned long) pw->pw_uid,
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- PA_SYSTEM_GROUP, (unsigned long) gr->gr_gid);
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-
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- if (pw->pw_gid != gr->gr_gid) {
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- pa_log(_("GID of user '%s' and of group '%s' don't match."), PA_SYSTEM_USER, PA_SYSTEM_GROUP);
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- return -1;
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- }
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-
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- if (!pa_streq(pw->pw_dir, PA_SYSTEM_RUNTIME_PATH))
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- pa_log_warn(_("Home directory of user '%s' is not '%s', ignoring."), PA_SYSTEM_USER, PA_SYSTEM_RUNTIME_PATH);
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-
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- if (pa_make_secure_dir(PA_SYSTEM_RUNTIME_PATH, 0755, pw->pw_uid, gr->gr_gid, true) < 0) {
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- pa_log(_("Failed to create '%s': %s"), PA_SYSTEM_RUNTIME_PATH, pa_cstrerror(errno));
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- return -1;
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- }
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-
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- if (pa_make_secure_dir(PA_SYSTEM_STATE_PATH, 0700, pw->pw_uid, gr->gr_gid, true) < 0) {
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- pa_log(_("Failed to create '%s': %s"), PA_SYSTEM_STATE_PATH, pa_cstrerror(errno));
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- return -1;
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- }
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-
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- /* We don't create the config dir here, because we don't need to write to it */
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-
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- if (initgroups(PA_SYSTEM_USER, gr->gr_gid) != 0) {
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- pa_log(_("Failed to change group list: %s"), pa_cstrerror(errno));
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- return -1;
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- }
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-
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-#if defined(HAVE_SETRESGID)
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- r = setresgid(gr->gr_gid, gr->gr_gid, gr->gr_gid);
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-#elif defined(HAVE_SETEGID)
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- if ((r = setgid(gr->gr_gid)) >= 0)
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- r = setegid(gr->gr_gid);
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-#elif defined(HAVE_SETREGID)
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- r = setregid(gr->gr_gid, gr->gr_gid);
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-#else
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-#error "No API to drop privileges"
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-#endif
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-
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- if (r < 0) {
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- pa_log(_("Failed to change GID: %s"), pa_cstrerror(errno));
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- return -1;
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- }
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-
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-#if defined(HAVE_SETRESUID)
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- r = setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid);
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-#elif defined(HAVE_SETEUID)
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- if ((r = setuid(pw->pw_uid)) >= 0)
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- r = seteuid(pw->pw_uid);
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-#elif defined(HAVE_SETREUID)
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- r = setreuid(pw->pw_uid, pw->pw_uid);
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-#else
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-#error "No API to drop privileges"
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-#endif
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-
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- if (r < 0) {
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- pa_log(_("Failed to change UID: %s"), pa_cstrerror(errno));
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- return -1;
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- }
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-
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- pa_drop_caps();
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-
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- pa_set_env("USER", PA_SYSTEM_USER);
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- pa_set_env("USERNAME", PA_SYSTEM_USER);
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- pa_set_env("LOGNAME", PA_SYSTEM_USER);
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- pa_set_env("HOME", PA_SYSTEM_RUNTIME_PATH);
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-
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- /* Relevant for pa_runtime_path() */
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- if (!getenv("PULSE_RUNTIME_PATH"))
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- pa_set_env("PULSE_RUNTIME_PATH", PA_SYSTEM_RUNTIME_PATH);
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-
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- if (!getenv("PULSE_CONFIG_PATH"))
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- pa_set_env("PULSE_CONFIG_PATH", PA_SYSTEM_CONFIG_PATH);
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-
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- if (!getenv("PULSE_STATE_PATH"))
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- pa_set_env("PULSE_STATE_PATH", PA_SYSTEM_STATE_PATH);
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-
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- pa_log_info("Successfully changed user to \"" PA_SYSTEM_USER "\".");
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-
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return 0;
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}
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-#else /* HAVE_PWD_H && HAVE_GRP_H */
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-
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-static int change_user(void) {
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- pa_log(_("System wide mode unsupported on this platform."));
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- return -1;
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-}
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-
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-#endif /* HAVE_PWD_H && HAVE_GRP_H */
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-
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#ifdef HAVE_SYS_RESOURCE_H
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static int set_one_rlimit(const pa_rlimit *r, int resource, const char *name) {
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