#include <regex.h>
#include <langinfo.h>
#include <sys/utsname.h>
+#include <sys/socket.h>
#ifdef HAVE_STRTOF_L
#include <locale.h>
#ifdef HAVE_SCHED_H
#include <sched.h>
+
+#if defined(__linux__) && !defined(SCHED_RESET_ON_FORK)
+#define SCHED_RESET_ON_FORK 0x40000000
+#endif
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <samplerate.h>
#endif
+#ifdef __APPLE__
+#include <xlocale.h>
+#endif
+
+#ifdef HAVE_DBUS
+#include "rtkit.h"
+#endif
+
+#ifdef __linux__
+#include <sys/personality.h>
+#endif
+
#include <pulse/xmalloc.h>
#include <pulse/util.h>
#include <pulse/utf8.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include <pulsecore/thread.h>
+#include <pulsecore/strbuf.h>
+#include <pulsecore/usergroup.h>
#include "core-util.h"
#endif
- return read(fd, buf, count);
+ for (;;) {
+ ssize_t r;
+
+ if ((r = read(fd, buf, count)) < 0)
+ if (errno == EINTR)
+ continue;
+
+ return r;
+ }
}
/** Similar to pa_read(), but handles writes */
if (!type || *type == 0) {
ssize_t r;
- if ((r = send(fd, buf, count, MSG_NOSIGNAL)) >= 0)
+ for (;;) {
+ if ((r = send(fd, buf, count, MSG_NOSIGNAL)) < 0) {
+
+ if (errno == EINTR)
+ continue;
+
+ break;
+ }
+
return r;
+ }
#ifdef OS_IS_WIN32
if (WSAGetLastError() != WSAENOTSOCK) {
*type = 1;
}
- return write(fd, buf, count);
+ for (;;) {
+ ssize_t r;
+
+ if ((r = write(fd, buf, count)) < 0)
+ if (errno == EINTR)
+ continue;
+
+ return r;
+ }
}
/** Calls read() in a loop. Makes sure that as much as 'size' bytes,
- * unless EOF is reached or an error occured */
+ * unless EOF is reached or an error occurred */
ssize_t pa_loop_read(int fd, void*data, size_t size, int *type) {
ssize_t ret = 0;
int _type;
for (;;) {
int r;
- if ((r = close(fd)) >= 0)
- return r;
+ if ((r = close(fd)) < 0)
+ if (errno == EINTR)
+ continue;
- if (errno != EINTR)
- return r;
+ return r;
}
}
/* Similar to OpenBSD's strlcpy() function */
char *pa_strlcpy(char *b, const char *s, size_t l) {
+ size_t k;
+
pa_assert(b);
pa_assert(s);
pa_assert(l > 0);
- strncpy(b, s, l);
- b[l-1] = 0;
+ k = strlen(s);
+
+ if (k > l-1)
+ k = l-1;
+
+ memcpy(b, s, k);
+ b[k] = 0;
+
return b;
}
-/* Make the current thread a realtime thread, and acquire the highest
- * rtprio we can get that is less or equal the specified parameter. If
- * the thread is already realtime, don't do anything. */
-int pa_make_realtime(int rtprio) {
-
-#ifdef _POSIX_PRIORITY_SCHEDULING
+static int set_scheduler(int rtprio) {
struct sched_param sp;
- int r, policy;
+ int r;
+#ifdef HAVE_DBUS
+ DBusError error;
+ DBusConnection *bus;
+
+ dbus_error_init(&error);
+#endif
- memset(&sp, 0, sizeof(sp));
- policy = 0;
+ pa_zero(sp);
+ sp.sched_priority = rtprio;
- if ((r = pthread_getschedparam(pthread_self(), &policy, &sp)) != 0) {
- pa_log("pthread_getschedgetparam(): %s", pa_cstrerror(r));
- return -1;
+#ifdef SCHED_RESET_ON_FORK
+ if ((r = pthread_setschedparam(pthread_self(), SCHED_RR|SCHED_RESET_ON_FORK, &sp)) == 0) {
+ pa_log_debug("SCHED_RR|SCHED_RESET_ON_FORK worked.");
+ return 0;
}
+#endif
- if (policy == SCHED_FIFO && sp.sched_priority >= rtprio) {
- pa_log_info("Thread already being scheduled with SCHED_FIFO with priority %i.", sp.sched_priority);
+ if ((r = pthread_setschedparam(pthread_self(), SCHED_RR, &sp)) == 0) {
+ pa_log_debug("SCHED_RR worked.");
return 0;
}
- sp.sched_priority = rtprio;
- if ((r = pthread_setschedparam(pthread_self(), SCHED_FIFO, &sp)) != 0) {
+#ifdef HAVE_DBUS
+ /* Try to talk to RealtimeKit */
- while (sp.sched_priority > 1) {
- sp.sched_priority --;
+ if (!(bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error))) {
+ pa_log("Failed to connect to system bus: %s\n", error.message);
+ dbus_error_free(&error);
+ errno = -EIO;
+ return -1;
+ }
- if ((r = pthread_setschedparam(pthread_self(), SCHED_FIFO, &sp)) == 0) {
- pa_log_info("Successfully enabled SCHED_FIFO scheduling for thread, with priority %i, which is lower than the requested %i.", sp.sched_priority, rtprio);
- return 0;
- }
- }
+ r = rtkit_make_realtime(bus, 0, rtprio);
+ dbus_connection_unref(bus);
- pa_log_warn("pthread_setschedparam(): %s", pa_cstrerror(r));
- return -1;
+ if (r >= 0) {
+ pa_log_debug("RealtimeKit worked.");
+ return 0;
}
- pa_log_info("Successfully enabled SCHED_FIFO scheduling for thread, with priority %i.", sp.sched_priority);
- return 0;
+ errno = -r;
#else
+ errno = r;
+#endif
- 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;
+/* Make the current thread a realtime thread, and acquire the highest
+ * rtprio we can get that is less or equal the specified parameter. If
+ * the thread is already realtime, don't do anything. */
+int pa_make_realtime(int rtprio) {
-#if defined(HAVE_SYS_RESOURCE_H) && defined(RLIMIT_RTPRIO)
- {
- struct rlimit rl;
+#ifdef _POSIX_PRIORITY_SCHEDULING
+ int p;
- if (getrlimit(RLIMIT_RTPRIO, &rl) >= 0)
- if (rl.rlim_cur > 0 || rl.rlim_cur == RLIM_INFINITY)
- return TRUE;
+ if (set_scheduler(rtprio) >= 0) {
+ pa_log_info("Successfully enabled SCHED_RR scheduling for thread, with priority %i.", rtprio);
+ return 0;
}
-#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;
+ for (p = rtprio-1; p >= 1; p--)
+ if (set_scheduler(p)) {
+ pa_log_info("Successfully enabled SCHED_RR scheduling for thread, with priority %i, which is lower than the requested %i.", p, rtprio);
+ return 0;
+ }
- if (cap_get_flag(cap, CAP_SYS_NICE, CAP_EFFECTIVE, &flag) >= 0)
- if (flag == CAP_SET) {
- cap_free(cap);
- return TRUE;
- }
+ pa_log_info("Failed to acquire real-time scheduling: %s", pa_cstrerror(errno));
+ return -1;
+#else
- cap_free(cap);
- }
- }
+ errno = ENOTSUP;
+ return -1;
#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;
+static int set_nice(int nice_level) {
+#ifdef HAVE_DBUS
+ DBusError error;
+ DBusConnection *bus;
+ int r;
-#if defined(HAVE_SYS_RESOURCE_H) && defined(RLIMIT_RTPRIO)
- {
- struct rlimit rl;
+ dbus_error_init(&error);
+#endif
- if (getrlimit(RLIMIT_NICE, &rl) >= 0)
- if (rl.rlim_cur >= 21 || rl.rlim_cur == RLIM_INFINITY)
- return TRUE;
+ if (setpriority(PRIO_PROCESS, 0, nice_level) >= 0) {
+ pa_log_debug("setpriority() worked.");
+ return 0;
}
-#endif
-#if defined(HAVE_SYS_CAPABILITY_H) && defined(CAP_SYS_NICE)
- {
- cap_t cap;
+#ifdef HAVE_DBUS
+ /* Try to talk to RealtimeKit */
- if ((cap = cap_get_proc())) {
- cap_flag_value_t flag = CAP_CLEAR;
+ if (!(bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error))) {
+ pa_log("Failed to connect to system bus: %s\n", error.message);
+ dbus_error_free(&error);
+ errno = -EIO;
+ return -1;
+ }
- if (cap_get_flag(cap, CAP_SYS_NICE, CAP_EFFECTIVE, &flag) >= 0)
- if (flag == CAP_SET) {
- cap_free(cap);
- return TRUE;
- }
+ r = rtkit_make_high_priority(bus, 0, nice_level);
+ dbus_connection_unref(bus);
- cap_free(cap);
- }
+ if (r >= 0) {
+ pa_log_debug("RealtimeKit worked.");
+ return 0;
}
+
+ errno = -r;
#endif
- return FALSE;
+ return -1;
}
/* Raise the priority of the current process as much as possible that
int pa_raise_priority(int nice_level) {
#ifdef HAVE_SYS_RESOURCE_H
- if (setpriority(PRIO_PROCESS, 0, nice_level) < 0) {
- int n;
+ int n;
- for (n = nice_level+1; n < 0; n++) {
+ if (set_nice(nice_level) >= 0) {
+ pa_log_info("Successfully gained nice level %i.", nice_level);
+ return 0;
+ }
- if (setpriority(PRIO_PROCESS, 0, n) == 0) {
- pa_log_info("Successfully acquired nice level %i, which is lower than the requested %i.", n, nice_level);
- return 0;
- }
+ for (n = nice_level+1; n < 0; n++)
+ if (set_nice(n) > 0) {
+ pa_log_info("Successfully acquired nice level %i, which is lower than the requested %i.", n, nice_level);
+ return 0;
}
- pa_log_warn("setpriority(): %s", pa_cstrerror(errno));
- return -1;
- }
-
- pa_log_info("Successfully gained nice level %i.", nice_level);
+ pa_log_info("Failed to acquire high-priority scheduling: %s", pa_cstrerror(errno));
+ return -1;
#endif
#ifdef OS_IS_WIN32
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.");
+ return -1;
+ }
+
+ pa_log_info("Successfully gained high priority class.");
}
#endif
setpriority(PRIO_PROCESS, 0, 0);
- memset(&sp, 0, sizeof(sp));
- pa_assert_se(pthread_setschedparam(pthread_self(), SCHED_OTHER, &sp) == 0);
+ pa_zero(sp);
+ pthread_setschedparam(pthread_self(), SCHED_OTHER, &sp);
#endif
#ifdef OS_IS_WIN32
#endif
}
-static int match(const char *expr, const char *v) {
+int pa_match(const char *expr, const char *v) {
int k;
regex_t re;
int r;
/* And then we check language dependant */
if ((expr = nl_langinfo(YESEXPR)))
if (expr[0])
- if ((r = match(expr, v)) > 0)
+ if ((r = pa_match(expr, v)) > 0)
return 1;
if ((expr = nl_langinfo(NOEXPR)))
if (expr[0])
- if ((r = match(expr, v)) > 0)
+ if ((r = pa_match(expr, v)) > 0)
return 0;
errno = EINVAL;
/* Check whether the specified GID and the group name match */
static int is_group(gid_t gid, const char *name) {
- struct group group, *result = NULL;
- long n;
- void *data;
+ struct group *group = NULL;
int r = -1;
-#ifdef HAVE_GETGRGID_R
-#ifdef _SC_GETGR_R_SIZE_MAX
- n = sysconf(_SC_GETGR_R_SIZE_MAX);
-#else
- n = -1;
-#endif
- 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 (!(group = pa_getgrgid_malloc(gid)))
+ {
if (!errno)
errno = ENOENT;
- goto finish;
- }
-
- r = strcmp(name, result->gr_name) == 0;
-
-finish:
- pa_xfree(data);
-#else
- /* XXX Not thread-safe, but needed on OSes (e.g. FreeBSD 4.X) that do not
- * support getgrgid_r. */
-
- errno = 0;
- if (!(result = getgrgid(gid))) {
- pa_log("getgrgid(%u): %s", gid, pa_cstrerror(errno));
-
- if (!errno)
- errno = ENOENT;
+ pa_log("pa_getgrgid_malloc(%u): %s", gid, pa_cstrerror(errno));
goto finish;
}
- r = strcmp(name, result->gr_name) == 0;
+ r = strcmp(name, group->gr_name) == 0;
finish:
-#endif
+ pa_getgrgid_free(group);
return r;
}
/* Check whether the specifc user id is a member of the specified group */
int pa_uid_in_group(uid_t uid, const char *name) {
- char *g_buf, *p_buf;
- long g_n, p_n;
- struct group grbuf, *gr;
+ struct group *group = NULL;
char **i;
int r = -1;
-#ifdef _SC_GETGR_R_SIZE_MAX
- g_n = sysconf(_SC_GETGR_R_SIZE_MAX);
-#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);
-#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 (!(group = pa_getgrnam_malloc(name)))
{
if (!errno)
errno = ENOENT;
}
r = 0;
- for (i = gr->gr_mem; *i; i++) {
- struct passwd pwbuf, *pw;
+ for (i = group->gr_mem; *i; i++) {
+ struct passwd *pw = NULL;
-#ifdef HAVE_GETPWNAM_R
- if (getpwnam_r(*i, &pwbuf, p_buf, (size_t) p_n, &pw) != 0 || !pw)
-#else
- if (!(pw = getpwnam(*i)))
-#endif
+ errno = 0;
+ if (!(pw = pa_getpwnam_malloc(*i)))
continue;
- if (pw->pw_uid == uid) {
+ if (pw->pw_uid == uid)
r = 1;
+
+ pa_getpwnam_free(pw);
+
+ if (r == 1)
break;
- }
}
finish:
- pa_xfree(g_buf);
- pa_xfree(p_buf);
+ pa_getgrnam_free(group);
return r;
}
/* Get the GID of a gfiven group, return (gid_t) -1 on failure. */
gid_t pa_get_gid_of_group(const char *name) {
gid_t ret = (gid_t) -1;
- char *g_buf;
- long g_n;
- struct group grbuf, *gr;
-
-#ifdef _SC_GETGR_R_SIZE_MAX
- g_n = sysconf(_SC_GETGR_R_SIZE_MAX);
-#else
- g_n = -1;
-#endif
- if (g_n <= 0)
- g_n = 512;
-
- g_buf = pa_xmalloc((size_t) g_n);
+ struct group *gr = NULL;
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 (!(gr = pa_getgrnam_malloc(name)))
{
if (!errno)
errno = ENOENT;
ret = gr->gr_gid;
finish:
- pa_xfree(g_buf);
+ pa_getgrnam_free(gr);
return ret;
}
(advisory on UNIX, mandatory on Windows) */
int pa_lock_fd(int fd, int b) {
#ifdef F_SETLKW
- struct flock flock;
+ struct flock f_lock;
/* Try a R/W lock first */
- flock.l_type = (short) (b ? F_WRLCK : F_UNLCK);
- flock.l_whence = SEEK_SET;
- flock.l_start = 0;
- flock.l_len = 0;
+ f_lock.l_type = (short) (b ? F_WRLCK : F_UNLCK);
+ f_lock.l_whence = SEEK_SET;
+ f_lock.l_start = 0;
+ f_lock.l_len = 0;
- if (fcntl(fd, F_SETLKW, &flock) >= 0)
+ if (fcntl(fd, F_SETLKW, &f_lock) >= 0)
return 0;
/* Perhaps the file descriptor qas opened for read only, than try again with a read lock. */
if (b && errno == EBADF) {
- flock.l_type = F_RDLCK;
- if (fcntl(fd, F_SETLKW, &flock) >= 0)
+ f_lock.l_type = F_RDLCK;
+ if (fcntl(fd, F_SETLKW, &f_lock) >= 0)
return 0;
}
goto fail;
}
- /* Check wheter the file has been removed meanwhile. When yes,
+ /* Check whether the file has been removed meanwhile. When yes,
* restart this loop, otherwise, we're done */
if (st.st_nlink >= 1)
break;
}
static char *get_pulse_home(void) {
- char h[PATH_MAX];
+ char *h;
struct stat st;
+ char *ret = NULL;
- if (!pa_get_home_dir(h, sizeof(h))) {
+ if (!(h = pa_get_home_dir_malloc())) {
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;
+ goto finish;
}
if (st.st_uid != getuid()) {
pa_log_error("Home directory %s not ours.", h);
errno = EACCES;
- return NULL;
+ goto finish;
}
- return pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse", h);
+ ret = pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse", h);
+
+finish:
+ pa_xfree(h);
+
+ return ret;
}
char *pa_get_state_dir(void) {
return d;
}
+char *pa_get_home_dir_malloc(void) {
+ char *homedir;
+ size_t allocated = 128;
+
+ for (;;) {
+ homedir = pa_xmalloc(allocated);
+
+ if (!pa_get_home_dir(homedir, allocated)) {
+ pa_xfree(homedir);
+ return NULL;
+ }
+
+ if (strlen(homedir) < allocated - 1)
+ break;
+
+ pa_xfree(homedir);
+ allocated *= 2;
+ }
+
+ return homedir;
+}
+
+char *pa_get_binary_name_malloc(void) {
+ char *t;
+ size_t allocated = 128;
+
+ for (;;) {
+ t = pa_xmalloc(allocated);
+
+ if (!pa_get_binary_name(t, allocated)) {
+ pa_xfree(t);
+ return NULL;
+ }
+
+ if (strlen(t) < allocated - 1)
+ break;
+
+ pa_xfree(t);
+ allocated *= 2;
+ }
+
+ return t;
+}
+
static char* make_random_dir(mode_t m) {
static const char table[] =
"abcdefghijklmnopqrstuvwxyz"
return -1;
}
+ pa_xfree(p);
return 0;
}
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));
+ pa_xfree(d);
goto fail;
}
goto fail;
}
- k = pa_sprintf_malloc("%s" PA_PATH_SEP "%s:runtime", d, mid);
+ k = pa_sprintf_malloc("%s" PA_PATH_SEP "%s-runtime", d, mid);
pa_xfree(d);
pa_xfree(mid);
if (local) {
const char *e;
char *lfn;
- char h[PATH_MAX];
+ char *h;
FILE *f;
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)))
+ else if ((h = pa_get_home_dir_malloc())) {
fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse" PA_PATH_SEP "%s", h, local);
- else
+ pa_xfree(h);
+ } else
return NULL;
#ifdef OS_IS_WIN32
if (local) {
const char *e;
char *lfn;
- char h[PATH_MAX];
+ char *h;
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)))
+ else if ((h = pa_get_home_dir_malloc())) {
fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse" PA_PATH_SEP "%s", h, local);
- else
+ pa_xfree(h);
+ } else
return NULL;
#ifdef OS_IS_WIN32
return NULL;
}
- r = pa_sprintf_malloc("%s" PA_PATH_SEP "%s:%s", rtp, mid, fn);
+ 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);
va_end(ap);
r = pa_close_allv(p);
- free(p);
+ pa_xfree(p);
return r;
}
int pa_close_allv(const int except_fds[]) {
struct rlimit rl;
- int fd;
- int saved_errno;
+ int maxfd, fd;
#ifdef __linux__
-
+ int saved_errno;
DIR *d;
if ((d = opendir("/proc/self/fd"))) {
#endif
- if (getrlimit(RLIMIT_NOFILE, &rl) < 0)
- return -1;
+ if (getrlimit(RLIMIT_NOFILE, &rl) >= 0)
+ maxfd = (int) rl.rlim_max;
+ else
+ maxfd = sysconf(_SC_OPEN_MAX);
- for (fd = 3; fd < (int) rl.rlim_max; fd++) {
+ for (fd = 3; fd < maxfd; fd++) {
int i;
pa_bool_t found;
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. */
+char *pa_get_user_name_malloc(void) {
+ ssize_t k;
+ char *u;
- if ((f = fopen(PA_MACHINE_ID, "r"))) {
- char ln[34] = "", *r;
+#ifdef _SC_LOGIN_NAME_MAX
+ k = (ssize_t) sysconf(_SC_LOGIN_NAME_MAX);
- r = fgets(ln, sizeof(ln)-1, f);
- fclose(f);
+ if (k <= 0)
+#endif
+ k = 32;
- pa_strip_nl(ln);
+ u = pa_xnew(char, k+1);
- if (ln[0])
- return pa_xstrdup(ln);
+ if (!(pa_get_user_name(u, k))) {
+ pa_xfree(u);
+ return NULL;
}
- /* The we fall back to the host name. It supposed to be somewhat
- * unique, at least in a network, but may change. */
+ return u;
+}
+
+char *pa_get_host_name_malloc(void) {
+ size_t l;
l = 100;
for (;;) {
break;
} else if (strlen(c) < l-1) {
+ char *u;
if (*c == 0) {
pa_xfree(c);
break;
}
- return c;
+ u = pa_utf8_filter(c);
+ pa_xfree(c);
+ return u;
}
/* Hmm, the hostname is as long the space we offered the
l *= 2;
}
+ return NULL;
+}
+
+char *pa_machine_id(void) {
+ FILE *f;
+ char *h;
+
+ /* 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 (r && ln[0])
+ return pa_utf8_filter(ln);
+ }
+
+ if ((h = pa_get_host_name_malloc()))
+ return h;
+
/* If no hostname was set we use the POSIX hostid. It's usually
- * the IPv4 address. Mit not be that stable. */
+ * the IPv4 address. Might not be that stable. */
return pa_sprintf_malloc("%08lx", (unsigned long) gethostid);
}
+char *pa_session_id(void) {
+ const char *e;
+
+ if (!(e = getenv("XDG_SESSION_COOKIE")))
+ return NULL;
+
+ return pa_utf8_filter(e);
+}
+
char *pa_uname_string(void) {
struct utsname u;
- pa_assert_se(uname(&u) == 0);
+ pa_assert_se(uname(&u) >= 0);
return pa_sprintf_malloc("%s %s %s %s", u.sysname, u.machine, u.release, u.version);
}
return ncpus <= 0 ? 1 : (unsigned) ncpus;
}
+
+char *pa_replace(const char*s, const char*a, const char *b) {
+ pa_strbuf *sb;
+ size_t an;
+
+ pa_assert(s);
+ pa_assert(a);
+ pa_assert(b);
+
+ an = strlen(a);
+ sb = pa_strbuf_new();
+
+ for (;;) {
+ const char *p;
+
+ if (!(p = strstr(s, a)))
+ break;
+
+ pa_strbuf_putsn(sb, s, p-s);
+ pa_strbuf_puts(sb, b);
+ s = p + an;
+ }
+
+ pa_strbuf_puts(sb, s);
+
+ return pa_strbuf_tostring_free(sb);
+}
+
+char *pa_escape(const char *p, const char *chars) {
+ const char *s;
+ const char *c;
+ pa_strbuf *buf = pa_strbuf_new();
+
+ for (s = p; *s; ++s) {
+ if (*s == '\\')
+ pa_strbuf_putc(buf, '\\');
+ else if (chars) {
+ for (c = chars; *c; ++c) {
+ if (*s == *c) {
+ pa_strbuf_putc(buf, '\\');
+ break;
+ }
+ }
+ }
+ pa_strbuf_putc(buf, *s);
+ }
+
+ return pa_strbuf_tostring_free(buf);
+}
+
+char *pa_unescape(char *p) {
+ char *s, *d;
+ pa_bool_t escaped = FALSE;
+
+ for (s = p, d = p; *s; s++) {
+ if (!escaped && *s == '\\') {
+ escaped = TRUE;
+ continue;
+ }
+
+ *(d++) = *s;
+ escaped = FALSE;
+ }
+
+ *d = 0;
+
+ return p;
+}
+
+char *pa_realpath(const char *path) {
+ char *t;
+ pa_assert(path);
+
+ /* We want only abolsute paths */
+ if (path[0] != '/') {
+ errno = EINVAL;
+ return NULL;
+ }
+
+#if defined(__GLIBC__) || defined(__APPLE__)
+ {
+ char *r;
+
+ if (!(r = realpath(path, NULL)))
+ return NULL;
+
+ /* We copy this here in case our pa_xmalloc() is not
+ * implemented on top of libc malloc() */
+ t = pa_xstrdup(r);
+ pa_xfree(r);
+ }
+#elif defined(PATH_MAX)
+ {
+ char *path_buf;
+ path_buf = pa_xmalloc(PATH_MAX);
+
+ if (!(t = realpath(path, path_buf))) {
+ pa_xfree(path_buf);
+ return NULL;
+ }
+ }
+#else
+#error "It's not clear whether this system supports realpath(..., NULL) like GNU libc does. If it doesn't we need a private version of realpath() here."
+#endif
+
+ return t;
+}
+
+void pa_disable_sigpipe(void) {
+
+#ifdef SIGPIPE
+ struct sigaction sa;
+
+ pa_zero(sa);
+
+ if (sigaction(SIGPIPE, NULL, &sa) < 0) {
+ pa_log("sigaction(): %s", pa_cstrerror(errno));
+ return;
+ }
+
+ sa.sa_handler = SIG_IGN;
+
+ if (sigaction(SIGPIPE, &sa, NULL) < 0) {
+ pa_log("sigaction(): %s", pa_cstrerror(errno));
+ return;
+ }
+#endif
+}
+
+void pa_xfreev(void**a) {
+ void **p;
+
+ if (!a)
+ return;
+
+ for (p = a; *p; p++)
+ pa_xfree(*p);
+
+ pa_xfree(a);
+}
+
+char **pa_split_spaces_strv(const char *s) {
+ char **t, *e;
+ unsigned i = 0, n = 8;
+ const char *state = NULL;
+
+ t = pa_xnew(char*, n);
+ while ((e = pa_split_spaces(s, &state))) {
+ t[i++] = e;
+
+ if (i >= n) {
+ n *= 2;
+ t = pa_xrenew(char*, t, n);
+ }
+ }
+
+ if (i <= 0) {
+ pa_xfree(t);
+ return NULL;
+ }
+
+ t[i] = NULL;
+ return t;
+}
+
+char* pa_maybe_prefix_path(const char *path, const char *prefix) {
+ pa_assert(path);
+
+ if (pa_is_path_absolute(path))
+ return pa_xstrdup(path);
+
+ return pa_sprintf_malloc("%s" PA_PATH_SEP "%s", prefix, path);
+}
+
+size_t pa_pipe_buf(int fd) {
+
+#ifdef _PC_PIPE_BUF
+ long n;
+
+ if ((n = fpathconf(fd, _PC_PIPE_BUF)) >= 0)
+ return (size_t) n;
+#endif
+
+#ifdef PIPE_BUF
+ return PIPE_BUF;
+#else
+ return 4096;
+#endif
+}
+
+void pa_reset_personality(void) {
+
+#ifdef __linux__
+ if (personality(PER_LINUX) < 0)
+ pa_log_warn("Uh, personality() failed: %s", pa_cstrerror(errno));
+#endif
+
+}
+
+#if defined(__linux__) && !defined(__OPTIMIZE__)
+
+pa_bool_t pa_run_from_build_tree(void) {
+ char *rp;
+ pa_bool_t b = FALSE;
+
+ /* We abuse __OPTIMIZE__ as a check whether we are a debug build
+ * or not. */
+
+ if ((rp = pa_readlink("/proc/self/exe"))) {
+ b = pa_startswith(rp, PA_BUILDDIR);
+ pa_xfree(rp);
+ }
+
+ return b;
+}
+
+#endif