-/* $Id$ */
-
/***
This file is part of PulseAudio.
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
+#include <dirent.h>
+#include <regex.h>
+#include <langinfo.h>
+#include <sys/utsname.h>
#ifdef HAVE_STRTOF_L
#include <locale.h>
#define MSG_NOSIGNAL 0
#endif
-#ifndef OS_IS_WIN32
-#define PA_USER_RUNTIME_PATH_PREFIX "/tmp/pulse-"
-#else
-#define PA_USER_RUNTIME_PATH_PREFIX "%TEMP%\\pulse-"
-#endif
-
#ifdef OS_IS_WIN32
#define PULSE_ROOTENV "PULSE_ROOT"
strcpy(library_path, PULSE_ROOTENV "=");
+ /* FIXME: Needs to set errno */
+
if (!GetModuleFileName(handle, library_path + sizeof(PULSE_ROOTENV), MAX_PATH))
return 0;
/** Creates a directory securely */
int pa_make_secure_dir(const char* dir, mode_t m, uid_t uid, gid_t gid) {
struct stat st;
- int r;
+ int r, saved_errno;
pa_assert(dir);
#else
{
mode_t u;
- u = umask(~m);
+ u = umask((~m) & 0777);
r = mkdir(dir, m);
umask(u);
}
goto fail;
}
#else
- pa_log_warn("secure directory creation not supported on Win32.");
+ pa_log_warn("Secure directory creation not supported on Win32.");
#endif
return 0;
fail:
+ saved_errno = errno;
rmdir(dir);
+ errno = saved_errno;
+
return -1;
}
if ((slash = (char*) pa_path_get_filename(dir)) == dir) {
pa_xfree(dir);
+ errno = ENOENT;
return NULL;
}
ret += r;
data = (uint8_t*) data + r;
- size -= r;
+ size -= (size_t) r;
}
return ret;
ret += r;
data = (const uint8_t*) data + r;
- size -= r;
+ size -= (size_t) r;
}
return ret;
}
#endif
- return close(fd);
+ for (;;) {
+ int r;
+
+ if ((r = close(fd)) >= 0)
+ return r;
+
+ if (errno != EINTR)
+ return r;
+ }
}
/* Print a warning messages in case that the given signal is not
/* The following function is based on an example from the GNU libc
* documentation. This function is similar to GNU's asprintf(). */
char *pa_sprintf_malloc(const char *format, ...) {
- int size = 100;
+ size_t size = 100;
char *c = NULL;
pa_assert(format);
c[size-1] = 0;
- if (r > -1 && r < size)
+ if (r > -1 && (size_t) r < size)
return c;
if (r > -1) /* glibc 2.1 */
- size = r+1;
+ size = (size_t) r+1;
else /* glibc 2.0 */
size *= 2;
}
/* Same as the previous function, but use a va_list instead of an
* ellipsis */
char *pa_vsprintf_malloc(const char *format, va_list ap) {
- int size = 100;
+ size_t size = 100;
char *c = NULL;
pa_assert(format);
c[size-1] = 0;
- if (r > -1 && r < size)
+ if (r > -1 && (size_t) r < size)
return c;
if (r > -1) /* glibc 2.1 */
- size = r+1;
+ size = (size_t) r+1;
else /* glibc 2.0 */
size *= 2;
}
pa_log_info("Successfully enabled SCHED_FIFO scheduling for thread, with priority %i.", sp.sched_priority);
return 0;
#else
+
+ errno = ENOTSUP;
return -1;
#endif
}
+/* This is merely used for giving the user a hint. This is not correct
+ * for anything security related */
+pa_bool_t pa_can_realtime(void) {
+
+ if (geteuid() == 0)
+ return TRUE;
+
+#if defined(HAVE_SYS_RESOURCE_H) && defined(RLIMIT_RTPRIO)
+ {
+ struct rlimit rl;
+
+ if (getrlimit(RLIMIT_RTPRIO, &rl) >= 0)
+ if (rl.rlim_cur > 0 || rl.rlim_cur == RLIM_INFINITY)
+ return TRUE;
+ }
+#endif
+
+#if defined(HAVE_SYS_CAPABILITY_H) && defined(CAP_SYS_NICE)
+ {
+ cap_t cap;
+
+ if ((cap = cap_get_proc())) {
+ cap_flag_value_t flag = CAP_CLEAR;
+
+ if (cap_get_flag(cap, CAP_SYS_NICE, CAP_EFFECTIVE, &flag) >= 0)
+ if (flag == CAP_SET) {
+ cap_free(cap);
+ return TRUE;
+ }
+
+ cap_free(cap);
+ }
+ }
+#endif
+
+ return FALSE;
+}
+
+/* This is merely used for giving the user a hint. This is not correct
+ * for anything security related */
+pa_bool_t pa_can_high_priority(void) {
+
+ if (geteuid() == 0)
+ return TRUE;
+
+#if defined(HAVE_SYS_RESOURCE_H) && defined(RLIMIT_RTPRIO)
+ {
+ struct rlimit rl;
+
+ if (getrlimit(RLIMIT_NICE, &rl) >= 0)
+ if (rl.rlim_cur >= 21 || rl.rlim_cur == RLIM_INFINITY)
+ return TRUE;
+ }
+#endif
+
+#if defined(HAVE_SYS_CAPABILITY_H) && defined(CAP_SYS_NICE)
+ {
+ cap_t cap;
+
+ if ((cap = cap_get_proc())) {
+ cap_flag_value_t flag = CAP_CLEAR;
+
+ if (cap_get_flag(cap, CAP_SYS_NICE, CAP_EFFECTIVE, &flag) >= 0)
+ if (flag == CAP_SET) {
+ cap_free(cap);
+ return TRUE;
+ }
+
+ cap_free(cap);
+ }
+ }
+#endif
+
+ return FALSE;
+}
+
/* Raise the priority of the current process as much as possible that
* is <= the specified nice level..*/
int pa_raise_priority(int nice_level) {
if (nice_level < 0) {
if (!SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS)) {
pa_log_warn("SetPriorityClass() failed: 0x%08X", GetLastError());
+ errno = EPERM;
return .-1;
} else
pa_log_info("Successfully gained high priority class.");
#endif
}
+static int match(const char *expr, const char *v) {
+ int k;
+ regex_t re;
+ int r;
+
+ if (regcomp(&re, expr, REG_NOSUB|REG_EXTENDED) != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if ((k = regexec(&re, v, 0, NULL, 0)) == 0)
+ r = 1;
+ else if (k == REG_NOMATCH)
+ r = 0;
+ else
+ r = -1;
+
+ regfree(&re);
+
+ if (r < 0)
+ errno = EINVAL;
+
+ return r;
+}
+
/* Try to parse a boolean string value.*/
int pa_parse_boolean(const char *v) {
+ const char *expr;
+ int r;
+ pa_assert(v);
+ /* First we check language independant */
if (!strcmp(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on"))
return 1;
else if (!strcmp(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off"))
return 0;
+ /* And then we check language dependant */
+ if ((expr = nl_langinfo(YESEXPR)))
+ if (expr[0])
+ if ((r = match(expr, v)) > 0)
+ return 1;
+
+ if ((expr = nl_langinfo(NOEXPR)))
+ if (expr[0])
+ if ((r = match(expr, v)) > 0)
+ return 0;
+
+ errno = EINVAL;
return -1;
}
#else
n = -1;
#endif
- if (n < 0) n = 512;
- data = pa_xmalloc(n);
+ if (n <= 0)
+ n = 512;
+
+ data = pa_xmalloc((size_t) n);
+
+ errno = 0;
+ if (getgrgid_r(gid, &group, data, (size_t) n, &result) < 0 || !result) {
+ pa_log("getgrgid_r(%u): %s", (unsigned) gid, pa_cstrerror(errno));
+
+ if (!errno)
+ errno = ENOENT;
- if (getgrgid_r(gid, &group, data, n, &result) < 0 || !result) {
- pa_log("getgrgid_r(%u): %s", (unsigned)gid, pa_cstrerror(errno));
goto finish;
}
#else
/* XXX Not thread-safe, but needed on OSes (e.g. FreeBSD 4.X) that do not
* support getgrgid_r. */
- if ((result = getgrgid(gid)) == NULL) {
+
+ errno = 0;
+ if (!(result = getgrgid(gid))) {
pa_log("getgrgid(%u): %s", gid, pa_cstrerror(errno));
+
+ if (!errno)
+ errno = ENOENT;
+
goto finish;
}
/* Check the current user is member of the specified group */
int pa_own_uid_in_group(const char *name, gid_t *gid) {
GETGROUPS_T *gids, tgid;
- int n = sysconf(_SC_NGROUPS_MAX);
- int r = -1, i;
+ long n = sysconf(_SC_NGROUPS_MAX);
+ int r = -1, i, k;
pa_assert(n > 0);
- gids = pa_xmalloc(sizeof(GETGROUPS_T)*n);
+ gids = pa_xmalloc(sizeof(GETGROUPS_T) * (size_t) n);
- if ((n = getgroups(n, gids)) < 0) {
+ if ((n = getgroups((int) n, gids)) < 0) {
pa_log("getgroups(): %s", pa_cstrerror(errno));
goto finish;
}
for (i = 0; i < n; i++) {
- if (is_group(gids[i], name) > 0) {
+
+ if ((k = is_group(gids[i], name)) < 0)
+ goto finish;
+ else if (k > 0) {
*gid = gids[i];
r = 1;
goto finish;
}
}
- if (is_group(tgid = getgid(), name) > 0) {
+ if ((k = is_group(tgid = getgid(), name)) < 0)
+ goto finish;
+ else if (k > 0) {
*gid = tgid;
r = 1;
goto finish;
char **i;
int r = -1;
+#ifdef _SC_GETGR_R_SIZE_MAX
g_n = sysconf(_SC_GETGR_R_SIZE_MAX);
- g_buf = pa_xmalloc(g_n);
+#else
+ g_n = -1;
+#endif
+ if (g_n <= 0)
+ g_n = 512;
+
+ g_buf = pa_xmalloc((size_t) g_n);
+#ifdef _SC_GETPW_R_SIZE_MAX
p_n = sysconf(_SC_GETPW_R_SIZE_MAX);
- p_buf = pa_xmalloc(p_n);
+#else
+ p_n = -1;
+#endif
+ if (p_n <= 0)
+ p_n = 512;
+ p_buf = pa_xmalloc((size_t) p_n);
+
+ errno = 0;
+#ifdef HAVE_GETGRNAM_R
if (getgrnam_r(name, &grbuf, g_buf, (size_t) g_n, &gr) != 0 || !gr)
+#else
+ if (!(gr = getgrnam(name)))
+#endif
+ {
+ if (!errno)
+ errno = ENOENT;
goto finish;
+ }
r = 0;
for (i = gr->gr_mem; *i; i++) {
struct passwd pwbuf, *pw;
+#ifdef HAVE_GETPWNAM_R
if (getpwnam_r(*i, &pwbuf, p_buf, (size_t) p_n, &pw) != 0 || !pw)
+#else
+ if (!(pw = getpwnam(*i)))
+#endif
continue;
if (pw->pw_uid == uid) {
long g_n;
struct group grbuf, *gr;
+#ifdef _SC_GETGR_R_SIZE_MAX
g_n = sysconf(_SC_GETGR_R_SIZE_MAX);
- g_buf = pa_xmalloc(g_n);
+#else
+ g_n = -1;
+#endif
+ if (g_n <= 0)
+ g_n = 512;
+
+ g_buf = pa_xmalloc((size_t) g_n);
+ errno = 0;
+#ifdef HAVE_GETGRNAM_R
if (getgrnam_r(name, &grbuf, g_buf, (size_t) g_n, &gr) != 0 || !gr)
+#else
+ if (!(gr = getgrnam(name)))
+#endif
+ {
+ if (!errno)
+ errno = ENOENT;
goto finish;
+ }
ret = gr->gr_gid;
#else /* HAVE_GRP_H */
int pa_own_uid_in_group(const char *name, gid_t *gid) {
+ errno = ENOSUP;
return -1;
}
int pa_uid_in_group(uid_t uid, const char *name) {
+ errno = ENOSUP;
return -1;
}
gid_t pa_get_gid_of_group(const char *name) {
+ errno = ENOSUP;
return (gid_t) -1;
}
int pa_check_in_group(gid_t g) {
+ errno = ENOSUP;
return -1;
}
/* Try a R/W lock first */
- flock.l_type = b ? F_WRLCK : F_UNLCK;
+ flock.l_type = (short) (b ? F_WRLCK : F_UNLCK);
flock.l_whence = SEEK_SET;
flock.l_start = 0;
flock.l_len = 0;
return 0;
pa_log("%slock failed: 0x%08X", !b ? "un" : "", GetLastError());
+
+ /* FIXME: Needs to set errno! */
#endif
return -1;
fail:
- if (fd >= 0)
+ if (fd >= 0) {
+ int saved_errno = errno;
pa_close(fd);
+ errno = saved_errno;
+ }
return -1;
}
/* Unlock a temporary lcok file */
int pa_unlock_lockfile(const char *fn, int fd) {
int r = 0;
- pa_assert(fn);
pa_assert(fd >= 0);
- if (unlink(fn) < 0) {
- pa_log_warn("Unable to remove lock file '%s': %s", fn, pa_cstrerror(errno));
- r = -1;
+ if (fn) {
+ if (unlink(fn) < 0) {
+ pa_log_warn("Unable to remove lock file '%s': %s", fn, pa_cstrerror(errno));
+ r = -1;
+ }
}
if (pa_lock_fd(fd, 0) < 0) {
return r;
}
+static char *get_pulse_home(void) {
+ char h[PATH_MAX];
+ struct stat st;
+
+ if (!pa_get_home_dir(h, sizeof(h))) {
+ pa_log_error("Failed to get home directory.");
+ return NULL;
+ }
+
+ if (stat(h, &st) < 0) {
+ pa_log_error("Failed to stat home directory %s: %s", h, pa_cstrerror(errno));
+ return NULL;
+ }
+
+ if (st.st_uid != getuid()) {
+ pa_log_error("Home directory %s not ours.", h);
+ errno = EACCES;
+ return NULL;
+ }
+
+ return pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse", h);
+}
+
char *pa_get_state_dir(void) {
- const char *e;
char *d;
- if ((e = getenv("PULSE_STATE_PATH")))
- d = pa_xstrdup(e);
- else {
- char h[PATH_MAX];
+ /* The state directory shall contain dynamic data that should be
+ * kept across reboots, and is private to this user */
+
+ if (!(d = pa_xstrdup(getenv("PULSE_STATE_PATH"))))
+ if (!(d = get_pulse_home()))
+ return NULL;
+
+ /* If PULSE_STATE_PATH and PULSE_RUNTIME_PATH point to the same
+ * dir then this will break. */
- if (!pa_get_home_dir(h, sizeof(h))) {
- pa_log_error("Failed to get home directory.");
+ if (pa_make_secure_dir(d, 0700U, (uid_t) -1, (gid_t) -1) < 0) {
+ pa_log_error("Failed to create secure directory: %s", pa_cstrerror(errno));
+ pa_xfree(d);
+ return NULL;
+ }
+
+ return d;
+}
+
+static char* make_random_dir(mode_t m) {
+ static const char table[] =
+ "abcdefghijklmnopqrstuvwxyz"
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ "0123456789";
+
+ const char *tmpdir;
+ char *fn;
+ size_t pathlen;
+
+ if (!(tmpdir = getenv("TMPDIR")))
+ if (!(tmpdir = getenv("TMP")))
+ if (!(tmpdir = getenv("TEMP")))
+ tmpdir = getenv("TEMPDIR");
+
+ if (!tmpdir || !pa_is_path_absolute(tmpdir))
+ tmpdir = "/tmp";
+
+ fn = pa_sprintf_malloc("%s/pulse-XXXXXXXXXXXX", tmpdir);
+ pathlen = strlen(fn);
+
+ for (;;) {
+ size_t i;
+ int r;
+ mode_t u;
+ int saved_errno;
+
+ for (i = pathlen - 12; i < pathlen; i++)
+ fn[i] = table[rand() % (sizeof(table)-1)];
+
+ u = umask((~m) & 0777);
+ r = mkdir(fn, m);
+
+ saved_errno = errno;
+ umask(u);
+ errno = saved_errno;
+
+ if (r >= 0)
+ return fn;
+
+ if (errno != EEXIST) {
+ pa_log_error("Failed to create random directory %s: %s", fn, pa_cstrerror(errno));
+ pa_xfree(fn);
return NULL;
}
+ }
+}
+
+static int make_random_dir_and_link(mode_t m, const char *k) {
+ char *p;
+
+ if (!(p = make_random_dir(m)))
+ return -1;
+
+ if (symlink(p, k) < 0) {
+ int saved_errno = errno;
+
+ if (errno != EEXIST)
+ pa_log_error("Failed to symlink %s to %s: %s", k, p, pa_cstrerror(errno));
+
+ rmdir(p);
+ pa_xfree(p);
+
+ errno = saved_errno;
+ return -1;
+ }
+
+ return 0;
+}
+
+char *pa_get_runtime_dir(void) {
+ char *d, *k = NULL, *p = NULL, *t = NULL, *mid;
+ struct stat st;
+ mode_t m;
+
+ /* The runtime directory shall contain dynamic data that needs NOT
+ * to be kept accross reboots and is usuallly private to the user,
+ * except in system mode, where it might be accessible by other
+ * users, too. Since we need POSIX locking and UNIX sockets in
+ * this directory, we link it to a random subdir in /tmp, if it
+ * was not explicitly configured. */
+
+ m = pa_in_system_mode() ? 0755U : 0700U;
+
+ if ((d = getenv("PULSE_RUNTIME_PATH"))) {
+
+ if (pa_make_secure_dir(d, m, (uid_t) -1, (gid_t) -1) < 0) {
+ pa_log_error("Failed to create secure directory: %s", pa_cstrerror(errno));
+ goto fail;
+ }
- d = pa_sprintf_malloc("%s/.pulse", h);
+ return pa_xstrdup(d);
}
- mkdir(d, 0755);
+ if (!(d = get_pulse_home()))
+ goto fail;
- if (access(d, W_OK) == 0)
- return d;
+ if (pa_make_secure_dir(d, m, (uid_t) -1, (gid_t) -1) < 0) {
+ pa_log_error("Failed to create secure directory: %s", pa_cstrerror(errno));
+ goto fail;
+ }
- pa_log_error("Failed to set up state directory %s", d);
+ if (!(mid = pa_machine_id())) {
+ pa_xfree(d);
+ goto fail;
+ }
+ k = pa_sprintf_malloc("%s" PA_PATH_SEP "%s:runtime", d, mid);
pa_xfree(d);
+ pa_xfree(mid);
+
+ for (;;) {
+ /* OK, first let's check if the "runtime" symlink is already
+ * existant */
+
+ if (!(p = pa_readlink(k))) {
+
+ if (errno != ENOENT) {
+ pa_log_error("Failed to stat runtime directory %s: %s", k, pa_cstrerror(errno));
+ goto fail;
+ }
+
+ /* Hmm, so the runtime directory didn't exist yet, so let's
+ * create one in /tmp and symlink that to it */
+
+ if (make_random_dir_and_link(0700, k) < 0) {
+
+ /* Mhmm, maybe another process was quicker than us,
+ * let's check if that was valid */
+ if (errno == EEXIST)
+ continue;
+
+ goto fail;
+ }
+
+ return k;
+ }
+
+ /* Make sure that this actually makes sense */
+ if (!pa_is_path_absolute(p)) {
+ pa_log_error("Path %s in link %s is not absolute.", p, k);
+ errno = ENOENT;
+ goto fail;
+ }
+
+ /* Hmm, so this symlink is still around, make sure nobody fools
+ * us */
+
+ if (lstat(p, &st) < 0) {
+
+ if (errno != ENOENT) {
+ pa_log_error("Failed to stat runtime directory %s: %s", p, pa_cstrerror(errno));
+ goto fail;
+ }
+
+ } else {
+
+ if (S_ISDIR(st.st_mode) &&
+ (st.st_uid == getuid()) &&
+ ((st.st_mode & 0777) == 0700)) {
+
+ pa_xfree(p);
+ return k;
+ }
+
+ pa_log_info("Hmm, runtime path exists, but points to an invalid directory. Changing runtime directory.");
+ }
+
+ pa_xfree(p);
+ p = NULL;
+
+ /* Hmm, so the link points to some nonexisting or invalid
+ * dir. Let's replace it by a new link. We first create a
+ * temporary link and then rename that to allow concurrent
+ * execution of this function. */
+
+ t = pa_sprintf_malloc("%s.tmp", k);
+
+ if (make_random_dir_and_link(0700, t) < 0) {
+
+ if (errno != EEXIST) {
+ pa_log_error("Failed to symlink %s: %s", t, pa_cstrerror(errno));
+ goto fail;
+ }
+
+ pa_xfree(t);
+ t = NULL;
+
+ /* Hmm, someone lese was quicker then us. Let's give
+ * him some time to finish, and retry. */
+ pa_msleep(10);
+ continue;
+ }
+
+ /* OK, we succeeded in creating the temporary symlink, so
+ * let's rename it */
+ if (rename(t, k) < 0) {
+ pa_log_error("Failed to rename %s to %s: %s", t, k, pa_cstrerror(errno));
+ goto fail;
+ }
+
+ pa_xfree(t);
+ return k;
+ }
+
+fail:
+ pa_xfree(p);
+ pa_xfree(k);
+ pa_xfree(t);
return NULL;
}
* file system. If "result" is non-NULL, a pointer to a newly
* allocated buffer containing the used configuration file is
* stored there.*/
-FILE *pa_open_config_file(const char *global, const char *local, const char *env, char **result, const char *mode) {
+FILE *pa_open_config_file(const char *global, const char *local, const char *env, char **result) {
const char *fn;
- char h[PATH_MAX];
-
#ifdef OS_IS_WIN32
char buf[PATH_MAX];
#endif
if (env && (fn = getenv(env))) {
+ FILE *f;
+
#ifdef OS_IS_WIN32
if (!ExpandEnvironmentStrings(fn, buf, PATH_MAX))
+ /* FIXME: Needs to set errno! */
return NULL;
fn = buf;
#endif
- if (result)
- *result = pa_xstrdup(fn);
+ if ((f = fopen(fn, "r"))) {
+ if (result)
+ *result = pa_xstrdup(fn);
+
+ return f;
+ }
- return fopen(fn, mode);
+ pa_log_warn("Failed to open configuration file '%s': %s", fn, pa_cstrerror(errno));
+ return NULL;
}
if (local) {
const char *e;
- char *lfn = NULL;
+ char *lfn;
+ char h[PATH_MAX];
+ FILE *f;
if ((e = getenv("PULSE_CONFIG_PATH")))
- fn = lfn = pa_sprintf_malloc("%s/%s", e, local);
- else if (pa_get_home_dir(h, sizeof(h))) {
- char *d;
-
- d = pa_sprintf_malloc("%s/.pulse", h);
- mkdir(d, 0755);
- pa_xfree(d);
-
- fn = lfn = pa_sprintf_malloc("%s/.pulse/%s", h, local);
- }
-
- if (lfn) {
- FILE *f;
+ fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", e, local);
+ else if (pa_get_home_dir(h, sizeof(h)))
+ fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse" PA_PATH_SEP "%s", h, local);
+ else
+ return NULL;
#ifdef OS_IS_WIN32
- if (!ExpandEnvironmentStrings(lfn, buf, PATH_MAX))
- return NULL;
- fn = buf;
+ if (!ExpandEnvironmentStrings(lfn, buf, PATH_MAX)) {
+ /* FIXME: Needs to set errno! */
+ pa_xfree(lfn);
+ return NULL;
+ }
+ fn = buf;
#endif
- f = fopen(fn, mode);
- if (f != NULL) {
- if (result)
- *result = pa_xstrdup(fn);
- pa_xfree(lfn);
- return f;
- }
+ if ((f = fopen(fn, "r"))) {
+ if (result)
+ *result = pa_xstrdup(fn);
- if (errno != ENOENT)
- pa_log_warn("Failed to open configuration file '%s': %s", lfn, pa_cstrerror(errno));
+ pa_xfree(lfn);
+ return f;
+ }
+ if (errno != ENOENT) {
+ pa_log_warn("Failed to open configuration file '%s': %s", fn, pa_cstrerror(errno));
pa_xfree(lfn);
+ return NULL;
}
- }
- if (!global) {
- if (result)
- *result = NULL;
- errno = ENOENT;
- return NULL;
+ pa_xfree(lfn);
}
+ if (global) {
+ FILE *f;
+
#ifdef OS_IS_WIN32
- if (!ExpandEnvironmentStrings(global, buf, PATH_MAX))
- return NULL;
- global = buf;
+ if (!ExpandEnvironmentStrings(global, buf, PATH_MAX))
+ /* FIXME: Needs to set errno! */
+ return NULL;
+ global = buf;
#endif
- if (result)
- *result = pa_xstrdup(global);
+ if ((f = fopen(global, "r"))) {
- return fopen(global, mode);
-}
+ if (result)
+ *result = pa_xstrdup(global);
-/* Format the specified data as a hexademical string */
-char *pa_hexstr(const uint8_t* d, size_t dlength, char *s, size_t slength) {
- size_t i = 0, j = 0;
- const char hex[] = "0123456789abcdef";
+ return f;
+ }
+ }
- pa_assert(d);
- pa_assert(s);
- pa_assert(slength > 0);
+ errno = ENOENT;
+ return NULL;
+}
+
+char *pa_find_config_file(const char *global, const char *local, const char *env) {
+ const char *fn;
+#ifdef OS_IS_WIN32
+ char buf[PATH_MAX];
+
+ if (!getenv(PULSE_ROOTENV))
+ pa_set_root(NULL);
+#endif
+
+ if (env && (fn = getenv(env))) {
+
+#ifdef OS_IS_WIN32
+ if (!ExpandEnvironmentStrings(fn, buf, PATH_MAX))
+ /* FIXME: Needs to set errno! */
+ return NULL;
+ fn = buf;
+#endif
+
+ if (access(fn, R_OK) == 0)
+ return pa_xstrdup(fn);
+
+ pa_log_warn("Failed to access configuration file '%s': %s", fn, pa_cstrerror(errno));
+ return NULL;
+ }
+
+ if (local) {
+ const char *e;
+ char *lfn;
+ char h[PATH_MAX];
+
+ if ((e = getenv("PULSE_CONFIG_PATH")))
+ fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", e, local);
+ else if (pa_get_home_dir(h, sizeof(h)))
+ fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse" PA_PATH_SEP "%s", h, local);
+ else
+ return NULL;
+
+#ifdef OS_IS_WIN32
+ if (!ExpandEnvironmentStrings(lfn, buf, PATH_MAX)) {
+ /* FIXME: Needs to set errno! */
+ pa_xfree(lfn);
+ return NULL;
+ }
+ fn = buf;
+#endif
+
+ if (access(fn, R_OK) == 0) {
+ char *r = pa_xstrdup(fn);
+ pa_xfree(lfn);
+ return r;
+ }
+
+ if (errno != ENOENT) {
+ pa_log_warn("Failed to access configuration file '%s': %s", fn, pa_cstrerror(errno));
+ pa_xfree(lfn);
+ return NULL;
+ }
+
+ pa_xfree(lfn);
+ }
+
+ if (global) {
+#ifdef OS_IS_WIN32
+ if (!ExpandEnvironmentStrings(global, buf, PATH_MAX))
+ /* FIXME: Needs to set errno! */
+ return NULL;
+ global = buf;
+#endif
+
+ if (access(global, R_OK) == 0)
+ return pa_xstrdup(global);
+ }
+
+ errno = ENOENT;
+
+ return NULL;
+}
+
+/* Format the specified data as a hexademical string */
+char *pa_hexstr(const uint8_t* d, size_t dlength, char *s, size_t slength) {
+ size_t i = 0, j = 0;
+ const char hex[] = "0123456789abcdef";
+
+ pa_assert(d);
+ pa_assert(s);
+ pa_assert(slength > 0);
while (i < dlength && j+3 <= slength) {
s[j++] = hex[*d >> 4];
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
+ errno = EINVAL;
return -1;
}
}
/* Returns nonzero when *s starts with *pfx */
-int pa_startswith(const char *s, const char *pfx) {
+pa_bool_t pa_startswith(const char *s, const char *pfx) {
size_t l;
pa_assert(s);
}
/* Returns nonzero when *s ends with *sfx */
-int pa_endswith(const char *s, const char *sfx) {
+pa_bool_t pa_endswith(const char *s, const char *sfx) {
size_t l1, l2;
pa_assert(s);
return l1 >= l2 && strcmp(s+l1-l2, sfx) == 0;
}
-/* if fn is null return the PulseAudio run time path in s (/tmp/pulse)
- * if fn is non-null and starts with / return fn in s
- * otherwise append fn to the run time path and return it in s */
-char *pa_runtime_path(const char *fn, char *s, size_t l) {
- const char *e;
+pa_bool_t pa_is_path_absolute(const char *fn) {
+ pa_assert(fn);
#ifndef OS_IS_WIN32
- if (fn && *fn == '/')
+ return *fn == '/';
#else
- if (fn && strlen(fn) >= 3 && isalpha(fn[0]) && fn[1] == ':' && fn[2] == '\\')
+ return strlen(fn) >= 3 && isalpha(fn[0]) && fn[1] == ':' && fn[2] == '\\';
#endif
- return pa_strlcpy(s, fn, l);
+}
+
+char *pa_make_path_absolute(const char *p) {
+ char *r;
+ char *cwd;
- if ((e = getenv("PULSE_RUNTIME_PATH"))) {
+ pa_assert(p);
- if (fn)
- pa_snprintf(s, l, "%s%c%s", e, PA_PATH_SEP_CHAR, fn);
- else
- pa_snprintf(s, l, "%s", e);
+ if (pa_is_path_absolute(p))
+ return pa_xstrdup(p);
- } else {
- char u[256];
+ if (!(cwd = pa_getcwd()))
+ return pa_xstrdup(p);
- if (fn)
- pa_snprintf(s, l, "%s%s%c%s", PA_USER_RUNTIME_PATH_PREFIX, pa_get_user_name(u, sizeof(u)), PA_PATH_SEP_CHAR, fn);
- else
- pa_snprintf(s, l, "%s%s", PA_USER_RUNTIME_PATH_PREFIX, pa_get_user_name(u, sizeof(u)));
- }
+ r = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", cwd, p);
+ pa_xfree(cwd);
+ return r;
+}
+/* if fn is null return the PulseAudio run time path in s (~/.pulse)
+ * if fn is non-null and starts with / return fn
+ * otherwise append fn to the run time path and return it */
+static char *get_path(const char *fn, pa_bool_t prependmid, pa_bool_t rt) {
+ char *rtp;
-#ifdef OS_IS_WIN32
- {
- char buf[l];
- strcpy(buf, s);
- ExpandEnvironmentStrings(buf, s, l);
- }
-#endif
+ if (pa_is_path_absolute(fn))
+ return pa_xstrdup(fn);
- return s;
+ rtp = rt ? pa_get_runtime_dir() : pa_get_state_dir();
+
+ if (!rtp)
+ return NULL;
+
+ if (fn) {
+ char *r;
+
+ if (prependmid) {
+ char *mid;
+
+ if (!(mid = pa_machine_id())) {
+ pa_xfree(rtp);
+ return NULL;
+ }
+
+ r = pa_sprintf_malloc("%s" PA_PATH_SEP "%s:%s", rtp, mid, fn);
+ pa_xfree(mid);
+ } else
+ r = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", rtp, fn);
+
+ pa_xfree(rtp);
+ return r;
+ } else
+ return rtp;
+}
+
+char *pa_runtime_path(const char *fn) {
+ return get_path(fn, FALSE, TRUE);
+}
+
+char *pa_state_path(const char *fn, pa_bool_t appendmid) {
+ return get_path(fn, appendmid, FALSE);
}
/* Convert the string s to a signed integer in *ret_i */
errno = 0;
l = strtol(s, &x, 0);
- if (!x || *x || errno != 0)
+ if (!x || *x || errno) {
+ if (!errno)
+ errno = EINVAL;
return -1;
+ }
- if ((int32_t) l != l)
+ if ((int32_t) l != l) {
+ errno = ERANGE;
return -1;
+ }
*ret_i = (int32_t) l;
errno = 0;
l = strtoul(s, &x, 0);
- if (!x || *x || errno != 0)
+ if (!x || *x || errno) {
+ if (!errno)
+ errno = EINVAL;
return -1;
+ }
- if ((uint32_t) l != l)
+ if ((uint32_t) l != l) {
+ errno = ERANGE;
return -1;
+ }
*ret_u = (uint32_t) l;
}
#endif
-int pa_atof(const char *s, float *ret_f) {
+int pa_atod(const char *s, double *ret_d) {
char *x = NULL;
- float f;
- int r = 0;
+ double f;
pa_assert(s);
- pa_assert(ret_f);
+ pa_assert(ret_d);
/* This should be locale independent */
if (c_locale) {
errno = 0;
- f = strtof_l(s, &x, c_locale);
+ f = strtod_l(s, &x, c_locale);
} else
#endif
{
errno = 0;
-#ifdef HAVE_STRTOF
- f = strtof(s, &x);
-#else
f = strtod(s, &x);
-#endif
}
- if (!x || *x || errno != 0)
- r = -1;
- else
- *ret_f = f;
+ if (!x || *x || errno) {
+ if (!errno)
+ errno = EINVAL;
+ return -1;
+ }
- return r;
+ *ret_d = f;
+
+ return 0;
}
/* Same as snprintf, but guarantees NUL-termination on every platform */
-int pa_snprintf(char *str, size_t size, const char *format, ...) {
- int ret;
+size_t pa_snprintf(char *str, size_t size, const char *format, ...) {
+ size_t ret;
va_list ap;
pa_assert(str);
pa_assert(format);
va_start(ap, format);
- ret = vsnprintf(str, size, format, ap);
+ ret = pa_vsnprintf(str, size, format, ap);
va_end(ap);
+ return ret;
+}
+
+/* Same as vsnprintf, but guarantees NUL-termination on every platform */
+size_t pa_vsnprintf(char *str, size_t size, const char *format, va_list ap) {
+ int ret;
+
+ pa_assert(str);
+ pa_assert(size > 0);
+ pa_assert(format);
+
+ ret = vsnprintf(str, size, format, ap);
+
str[size-1] = 0;
- return ret;
+ if (ret < 0)
+ return strlen(str);
+
+ if ((size_t) ret > size-1)
+ return size-1;
+
+ return (size_t) ret;
}
/* Truncate the specified string, but guarantee that the string
size_t l = 128;
for (;;) {
- char *p = pa_xnew(char, l);
+ char *p = pa_xmalloc(l);
if (getcwd(p, l))
return p;
}
}
-char *pa_make_path_absolute(const char *p) {
- char *r;
- char *cwd;
-
- pa_assert(p);
-
- if (p[0] == '/')
- return pa_xstrdup(p);
-
- if (!(cwd = pa_getcwd()))
- return pa_xstrdup(p);
-
- r = pa_sprintf_malloc("%s/%s", cwd, p);
- pa_xfree(cwd);
- return r;
-}
-
void *pa_will_need(const void *p, size_t l) {
#ifdef RLIMIT_MEMLOCK
struct rlimit rlim;
pa_assert(l > 0);
a = PA_PAGE_ALIGN_PTR(p);
- size = (const uint8_t*) p + l - (const uint8_t*) a;
+ size = (size_t) ((const uint8_t*) p + l - (const uint8_t*) a);
#ifdef HAVE_POSIX_MADVISE
if ((r = posix_madvise((void*) a, size, POSIX_MADV_WILLNEED)) == 0) {
if (rlim.rlim_cur < PA_PAGE_SIZE) {
pa_log_debug("posix_madvise() failed (or doesn't exist), resource limits don't allow mlock(), can't page in data: %s", pa_cstrerror(r));
+ errno = EPERM;
return (void*) p;
}
- bs = PA_PAGE_ALIGN(rlim.rlim_cur);
+ bs = PA_PAGE_ALIGN((size_t) rlim.rlim_cur);
#else
bs = PA_PAGE_SIZE*4;
#endif
char *c;
ssize_t n;
- c = pa_xnew(char, l);
+ c = pa_xmalloc(l);
if ((n = readlink(p, c, l-1)) < 0) {
pa_xfree(c);
l *= 2;
}
}
+
+int pa_close_all(int except_fd, ...) {
+ va_list ap;
+ unsigned n = 0, i;
+ int r, *p;
+
+ va_start(ap, except_fd);
+
+ if (except_fd >= 0)
+ for (n = 1; va_arg(ap, int) >= 0; n++)
+ ;
+
+ va_end(ap);
+
+ p = pa_xnew(int, n+1);
+
+ va_start(ap, except_fd);
+
+ i = 0;
+ if (except_fd >= 0) {
+ int fd;
+ p[i++] = except_fd;
+
+ while ((fd = va_arg(ap, int)) >= 0)
+ p[i++] = fd;
+ }
+ p[i] = -1;
+
+ va_end(ap);
+
+ r = pa_close_allv(p);
+ free(p);
+
+ return r;
+}
+
+int pa_close_allv(const int except_fds[]) {
+ struct rlimit rl;
+ int fd;
+ int saved_errno;
+
+#ifdef __linux__
+
+ DIR *d;
+
+ if ((d = opendir("/proc/self/fd"))) {
+
+ struct dirent *de;
+
+ while ((de = readdir(d))) {
+ pa_bool_t found;
+ long l;
+ char *e = NULL;
+ int i;
+
+ if (de->d_name[0] == '.')
+ continue;
+
+ errno = 0;
+ l = strtol(de->d_name, &e, 10);
+ if (errno != 0 || !e || *e) {
+ closedir(d);
+ errno = EINVAL;
+ return -1;
+ }
+
+ fd = (int) l;
+
+ if ((long) fd != l) {
+ closedir(d);
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (fd < 3)
+ continue;
+
+ if (fd == dirfd(d))
+ continue;
+
+ found = FALSE;
+ for (i = 0; except_fds[i] >= 0; i++)
+ if (except_fds[i] == fd) {
+ found = TRUE;
+ break;
+ }
+
+ if (found)
+ continue;
+
+ if (pa_close(fd) < 0) {
+ saved_errno = errno;
+ closedir(d);
+ errno = saved_errno;
+
+ return -1;
+ }
+ }
+
+ closedir(d);
+ return 0;
+ }
+
+#endif
+
+ if (getrlimit(RLIMIT_NOFILE, &rl) < 0)
+ return -1;
+
+ for (fd = 3; fd < (int) rl.rlim_max; fd++) {
+ int i;
+ pa_bool_t found;
+
+ found = FALSE;
+ for (i = 0; except_fds[i] >= 0; i++)
+ if (except_fds[i] == fd) {
+ found = TRUE;
+ break;
+ }
+
+ if (found)
+ continue;
+
+ if (pa_close(fd) < 0 && errno != EBADF)
+ return -1;
+ }
+
+ return 0;
+}
+
+int pa_unblock_sigs(int except, ...) {
+ va_list ap;
+ unsigned n = 0, i;
+ int r, *p;
+
+ va_start(ap, except);
+
+ if (except >= 1)
+ for (n = 1; va_arg(ap, int) >= 0; n++)
+ ;
+
+ va_end(ap);
+
+ p = pa_xnew(int, n+1);
+
+ va_start(ap, except);
+
+ i = 0;
+ if (except >= 1) {
+ int sig;
+ p[i++] = except;
+
+ while ((sig = va_arg(ap, int)) >= 0)
+ p[i++] = sig;
+ }
+ p[i] = -1;
+
+ va_end(ap);
+
+ r = pa_unblock_sigsv(p);
+ pa_xfree(p);
+
+ return r;
+}
+
+int pa_unblock_sigsv(const int except[]) {
+ int i;
+ sigset_t ss;
+
+ if (sigemptyset(&ss) < 0)
+ return -1;
+
+ for (i = 0; except[i] > 0; i++)
+ if (sigaddset(&ss, except[i]) < 0)
+ return -1;
+
+ return sigprocmask(SIG_SETMASK, &ss, NULL);
+}
+
+int pa_reset_sigs(int except, ...) {
+ va_list ap;
+ unsigned n = 0, i;
+ int *p, r;
+
+ va_start(ap, except);
+
+ if (except >= 1)
+ for (n = 1; va_arg(ap, int) >= 0; n++)
+ ;
+
+ va_end(ap);
+
+ p = pa_xnew(int, n+1);
+
+ va_start(ap, except);
+
+ i = 0;
+ if (except >= 1) {
+ int sig;
+ p[i++] = except;
+
+ while ((sig = va_arg(ap, int)) >= 0)
+ sig = p[i++];
+ }
+ p[i] = -1;
+
+ va_end(ap);
+
+ r = pa_reset_sigsv(p);
+ pa_xfree(p);
+
+ return r;
+}
+
+int pa_reset_sigsv(const int except[]) {
+ int sig;
+
+ for (sig = 1; sig < NSIG; sig++) {
+ pa_bool_t reset = TRUE;
+
+ switch (sig) {
+ case SIGKILL:
+ case SIGSTOP:
+ reset = FALSE;
+ break;
+
+ default: {
+ int i;
+
+ for (i = 0; except[i] > 0; i++) {
+ if (sig == except[i]) {
+ reset = FALSE;
+ break;
+ }
+ }
+ }
+ }
+
+ if (reset) {
+ struct sigaction sa;
+
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = SIG_DFL;
+
+ /* On Linux the first two RT signals are reserved by
+ * glibc, and sigaction() will return EINVAL for them. */
+ if ((sigaction(sig, &sa, NULL) < 0))
+ if (errno != EINVAL)
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+void pa_set_env(const char *key, const char *value) {
+ pa_assert(key);
+ pa_assert(value);
+
+ putenv(pa_sprintf_malloc("%s=%s", key, value));
+}
+
+pa_bool_t pa_in_system_mode(void) {
+ const char *e;
+
+ if (!(e = getenv("PULSE_SYSTEM")))
+ return FALSE;
+
+ return !!atoi(e);
+}
+
+char *pa_machine_id(void) {
+ FILE *f;
+ size_t l;
+
+ /* The returned value is supposed be some kind of ascii identifier
+ * that is unique and stable across reboots. */
+
+ /* First we try the D-Bus UUID, which is the best option we have,
+ * since it fits perfectly our needs and is not as volatile as the
+ * hostname which might be set from dhcp. */
+
+ if ((f = fopen(PA_MACHINE_ID, "r"))) {
+ char ln[34] = "", *r;
+
+ r = fgets(ln, sizeof(ln)-1, f);
+ fclose(f);
+
+ pa_strip_nl(ln);
+
+ if (ln[0])
+ return pa_xstrdup(ln);
+ }
+
+ /* The we fall back to the host name. It supposed to be somewhat
+ * unique, at least in a network, but may change. */
+
+ l = 100;
+ for (;;) {
+ char *c;
+
+ c = pa_xmalloc(l);
+
+ if (!pa_get_host_name(c, l)) {
+
+ if (errno != EINVAL && errno != ENAMETOOLONG)
+ break;
+
+ } else if (strlen(c) < l-1) {
+
+ if (*c == 0) {
+ pa_xfree(c);
+ break;
+ }
+
+ return c;
+ }
+
+ /* Hmm, the hostname is as long the space we offered the
+ * function, we cannot know if it fully fit in, so let's play
+ * safe and retry. */
+
+ pa_xfree(c);
+ l *= 2;
+ }
+
+ /* If no hostname was set we use the POSIX hostid. It's usually
+ * the IPv4 address. Mit not be that stable. */
+ return pa_sprintf_malloc("%08lx", (unsigned long) gethostid);
+}
+
+char *pa_uname_string(void) {
+ struct utsname u;
+
+ pa_assert_se(uname(&u) == 0);
+
+ return pa_sprintf_malloc("%s %s %s %s", u.sysname, u.machine, u.release, u.version);
+}
+
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+pa_bool_t pa_in_valgrind(void) {
+ static int b = 0;
+
+ /* To make heisenbugs a bit simpler to find we check for $VALGRIND
+ * here instead of really checking whether we run in valgrind or
+ * not. */
+
+ if (b < 1)
+ b = getenv("VALGRIND") ? 2 : 1;
+
+ return b > 1;
+}
+#endif
+
+unsigned pa_gcd(unsigned a, unsigned b) {
+
+ while (b > 0) {
+ unsigned t = b;
+ b = a % b;
+ a = t;
+ }
+
+ return a;
+}
+
+void pa_reduce(unsigned *num, unsigned *den) {
+
+ unsigned gcd = pa_gcd(*num, *den);
+
+ if (gcd <= 0)
+ return;
+
+ *num /= gcd;
+ *den /= gcd;
+
+ pa_assert(pa_gcd(*num, *den) == 1);
+}
+
+unsigned pa_ncpus(void) {
+ long ncpus;
+
+#ifdef _SC_NPROCESSORS_CONF
+ ncpus = sysconf(_SC_NPROCESSORS_CONF);
+#else
+ ncpus = 1;
+#endif
+
+ return ncpus <= 0 ? 1 : (unsigned) ncpus;
+}