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Diffstat (limited to 'src/pulse/util.c')
| -rw-r--r-- | src/pulse/util.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/src/pulse/util.c b/src/pulse/util.c new file mode 100644 index 00000000..d3ac9f66 --- /dev/null +++ b/src/pulse/util.c @@ -0,0 +1,262 @@ +/* $Id$ */ + +/*** + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with PulseAudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> +#include <sys/types.h> + +#ifdef HAVE_PWD_H +#include <pwd.h> +#endif + +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif + +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#ifdef HAVE_WINDOWS_H +#include <windows.h> +#endif + +#ifdef HAVE_SYS_PRCTL_H +#include <sys/prctl.h> +#endif + +#include <pulse/xmalloc.h> +#include <pulsecore/winsock.h> +#include <pulsecore/core-error.h> +#include <pulsecore/log.h> +#include <pulsecore/core-util.h> +#include <pulsecore/macro.h> + +#include "util.h" + +char *pa_get_user_name(char *s, size_t l) { + char *p; + char buf[1024]; + +#ifdef HAVE_PWD_H + struct passwd pw, *r; +#endif + + pa_assert(s); + pa_assert(l > 0); + + if (!(p = getenv("USER")) && !(p = getenv("LOGNAME")) && !(p = getenv("USERNAME"))) { +#ifdef HAVE_PWD_H + +#ifdef HAVE_GETPWUID_R + if (getpwuid_r(getuid(), &pw, buf, sizeof(buf), &r) != 0 || !r) { +#else + /* XXX Not thread-safe, but needed on OSes (e.g. FreeBSD 4.X) + * that do not support getpwuid_r. */ + if ((r = getpwuid(getuid())) == NULL) { +#endif + pa_snprintf(s, l, "%lu", (unsigned long) getuid()); + return s; + } + + p = r->pw_name; + +#elif defined(OS_IS_WIN32) /* HAVE_PWD_H */ + DWORD size = sizeof(buf); + + if (!GetUserName(buf, &size)) + return NULL; + + p = buf; + +#else /* HAVE_PWD_H */ + return NULL; +#endif /* HAVE_PWD_H */ + } + + return pa_strlcpy(s, p, l); +} + +char *pa_get_host_name(char *s, size_t l) { + + pa_assert(s); + pa_assert(l > 0); + + if (gethostname(s, l) < 0) { + pa_log("gethostname(): %s", pa_cstrerror(errno)); + return NULL; + } + + s[l-1] = 0; + return s; +} + +char *pa_get_home_dir(char *s, size_t l) { + char *e; + +#ifdef HAVE_PWD_H + char buf[1024]; + struct passwd pw, *r; +#endif + + pa_assert(s); + pa_assert(l > 0); + + if ((e = getenv("HOME"))) + return pa_strlcpy(s, e, l); + + if ((e = getenv("USERPROFILE"))) + return pa_strlcpy(s, e, l); + +#ifdef HAVE_PWD_H +#ifdef HAVE_GETPWUID_R + if (getpwuid_r(getuid(), &pw, buf, sizeof(buf), &r) != 0 || !r) { + pa_log("getpwuid_r() failed"); +#else + /* XXX Not thread-safe, but needed on OSes (e.g. FreeBSD 4.X) + * that do not support getpwuid_r. */ + if ((r = getpwuid(getuid())) == NULL) { + pa_log("getpwuid_r() failed"); +#endif + return NULL; + } + + return pa_strlcpy(s, r->pw_dir, l); +#else /* HAVE_PWD_H */ + return NULL; +#endif +} + +char *pa_get_binary_name(char *s, size_t l) { + + pa_assert(s); + pa_assert(l > 0); + +#if defined(OS_IS_WIN32) + { + char path[PATH_MAX]; + + if (GetModuleFileName(NULL, path, PATH_MAX)) + return pa_strlcpy(s, pa_path_get_filename(path), l); + } +#endif + +#ifdef __linux__ + { + char *rp; + /* This works on Linux only */ + + if ((rp = pa_readlink("/proc/self/exe"))) { + pa_strlcpy(s, pa_path_get_filename(rp), l); + pa_xfree(rp); + return s; + } + } + +#endif + +#if defined(HAVE_SYS_PRCTL_H) && defined(PR_GET_NAME) + { + + #ifndef TASK_COMM_LEN + /* Actually defined in linux/sched.h */ + #define TASK_COMM_LEN 16 + #endif + + char tcomm[TASK_COMM_LEN+1]; + memset(tcomm, 0, sizeof(tcomm)); + + /* This works on Linux only */ + if (prctl(PR_GET_NAME, (unsigned long) tcomm, 0, 0, 0) == 0) + return pa_strlcpy(s, tcomm, l); + + } +#endif + + return NULL; +} + +char *pa_path_get_filename(const char *p) { + char *fn; + + pa_assert(p); + + if ((fn = strrchr(p, PA_PATH_SEP_CHAR))) + return fn+1; + + return (char*) p; +} + +char *pa_get_fqdn(char *s, size_t l) { + char hn[256]; +#ifdef HAVE_GETADDRINFO + struct addrinfo *a, hints; +#endif + + pa_assert(s); + pa_assert(l > 0); + + if (!pa_get_host_name(hn, sizeof(hn))) + return NULL; + +#ifdef HAVE_GETADDRINFO + memset(&hints, 0, sizeof(hints)); + hints.ai_family = AF_UNSPEC; + hints.ai_flags = AI_CANONNAME; + + if (getaddrinfo(hn, NULL, &hints, &a) < 0 || !a || !a->ai_canonname || !*a->ai_canonname) + return pa_strlcpy(s, hn, l); + + pa_strlcpy(s, a->ai_canonname, l); + freeaddrinfo(a); + return s; +#else + return pa_strlcpy(s, hn, l); +#endif +} + +int pa_msleep(unsigned long t) { +#ifdef OS_IS_WIN32 + Sleep(t); + return 0; +#elif defined(HAVE_NANOSLEEP) + struct timespec ts; + + ts.tv_sec = t/1000; + ts.tv_nsec = (t % 1000) * 1000000; + + return nanosleep(&ts, NULL); +#else +#error "Platform lacks a sleep function." +#endif +} |