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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "utils.h"
#include "log.h"
#include "conf.h"
#include "../config.h"
#include <assert.h>
#include <string.h>
#include <sys/types.h>
#include <pwd.h>
#include <fcntl.h>
#include <glib.h>
#ifdef HAVE_IPV6
#include <sys/socket.h>
#endif
char *myFgets(char *buffer, int bufferSize, FILE * fp)
{
char *ret = fgets(buffer, bufferSize, fp);
if (ret && strlen(buffer) > 0 && buffer[strlen(buffer) - 1] == '\n') {
buffer[strlen(buffer) - 1] = '\0';
}
if (ret && strlen(buffer) > 0 && buffer[strlen(buffer) - 1] == '\r') {
buffer[strlen(buffer) - 1] = '\0';
}
return ret;
}
void stripReturnChar(char *string)
{
while (string && (string = strchr(string, '\n'))) {
*string = ' ';
}
}
void my_usleep(long usec)
{
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = usec;
select(0, NULL, NULL, NULL, &tv);
}
int ipv6Supported(void)
{
#ifdef HAVE_IPV6
int s;
s = socket(AF_INET6, SOCK_STREAM, 0);
if (s == -1)
return 0;
close(s);
return 1;
#else
return 0;
#endif
}
G_GNUC_MALLOC char *xstrdup(const char *s)
{
char *ret = strdup(s);
if (G_UNLIKELY(!ret))
FATAL("OOM: strdup\n");
return ret;
}
/* borrowed from git :) */
G_GNUC_MALLOC void *xmalloc(size_t size)
{
void *ret;
assert(G_LIKELY(size));
ret = malloc(size);
if (G_UNLIKELY(!ret))
FATAL("OOM: malloc\n");
return ret;
}
G_GNUC_MALLOC void *xrealloc(void *ptr, size_t size)
{
void *ret = realloc(ptr, size);
/* some C libraries return NULL when size == 0,
* make sure we get a free()-able pointer (free(NULL)
* doesn't work with all C libraries, either) */
if (G_UNLIKELY(!ret && !size))
ret = realloc(ptr, 1);
if (G_UNLIKELY(!ret))
FATAL("OOM: realloc\n");
return ret;
}
G_GNUC_MALLOC void *xcalloc(size_t nmemb, size_t size)
{
void *ret;
assert(G_LIKELY(nmemb && size));
ret = calloc(nmemb, size);
if (G_UNLIKELY(!ret))
FATAL("OOM: calloc\n");
return ret;
}
char *parsePath(char *path)
{
ConfigParam *param;
struct passwd *passwd;
char *newPath;
char *c;
int foundSlash = 0;
int pos = 1;
if (path[0] != '/' && path[0] != '~') {
ERROR("\"%s\" is not an absolute path\n", path);
return NULL;
} else if (path[0] == '~') {
if (path[1] == '/' || path[1] == '\0') {
param = getConfigParam(CONF_USER);
if (param && param->value) {
passwd = getpwnam(param->value);
if (!passwd) {
ERROR("no such user %s\n",
param->value);
return NULL;
}
} else {
passwd = getpwuid(geteuid());
if (!passwd) {
ERROR("problems getting passwd entry "
"for current user\n");
return NULL;
}
}
} else {
for (c = path + 1; *c != '\0' && *c != '/'; c++);
if (*c == '/') {
foundSlash = 1;
*c = '\0';
}
pos = c - path;
passwd = getpwnam(path + 1);
if (!passwd) {
ERROR("user \"%s\" not found\n", path + 1);
return NULL;
}
if (foundSlash)
*c = '/';
}
newPath = xmalloc(strlen(passwd->pw_dir) + strlen(path + pos) + 1);
strcpy(newPath, passwd->pw_dir);
strcat(newPath, path + pos);
} else {
newPath = xstrdup(path);
}
return newPath;
}
int set_nonblocking(int fd)
{
int ret, flags;
assert(fd >= 0);
while ((flags = fcntl(fd, F_GETFL)) < 0 && errno == EINTR) ;
if (flags < 0)
return flags;
flags |= O_NONBLOCK;
while ((ret = fcntl(fd, F_SETFL, flags)) < 0 && errno == EINTR) ;
return ret;
}
void init_async_pipe(int file_des[2])
{
if (pipe(file_des) < 0)
FATAL("Couldn't open pipe: %s", strerror(errno));
if (set_nonblocking(file_des[0]) < 0)
FATAL("Couldn't set non-blocking I/O: %s\n", strerror(errno));
if (set_nonblocking(file_des[1]) < 0)
FATAL("Couldn't set non-blocking I/O: %s\n", strerror(errno));
}
void xpthread_mutex_init(pthread_mutex_t *m, const pthread_mutexattr_t *a)
{
int err;
if ((err = pthread_mutex_init(m, a)))
FATAL("failed to init mutex: %s\n", strerror(err));
}
void xpthread_cond_init(pthread_cond_t *c, pthread_condattr_t *a)
{
int err;
if ((err = pthread_cond_init(c, a)))
FATAL("failed to init cond: %s\n", strerror(err));
}
void xpthread_mutex_destroy(pthread_mutex_t *mutex)
{
int err;
if ((err = pthread_mutex_destroy(mutex)))
FATAL("failed to destroy mutex: %s\n", strerror(err));
}
void xpthread_cond_destroy(pthread_cond_t *cond)
{
int err;
if ((err = pthread_cond_destroy(cond)))
FATAL("failed to destroy cond: %s\n", strerror(err));
}
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