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xmppipe/src/xmppipe_util.c

143 lines
2.8 KiB
C

/* Copyright (c) 2015, Michael Santos <michael.santos@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "xmppipe.h"
#include <fcntl.h>
int
xmppipe_set_nonblock(int fd)
{
int flags = 0;
flags = fcntl(fd, F_GETFD);
if (flags < 0)
return -1;
if (fcntl(fd, F_SETFD, flags|O_NONBLOCK) < 0)
return -1;
return 0;
}
char *
xmppipe_getenv(const char *s)
{
char *p = getenv(s);
if (!p)
return NULL;
return xmppipe_strdup(p);
}
char *
xmppipe_strdup(const char *s)
{
char *buf = NULL;
if (!*s)
errx(2, "invalid string");
buf = strdup(s);
if (!buf)
err(3, "allocation failure");
return buf;
}
void *
xmppipe_malloc(size_t size)
{
char *buf = NULL;
if (size == 0 || size > 0xffff)
errx(2, "invalid size: %zd", size);
buf = malloc(size);
if (!buf)
err(3, "allocation failure");
return buf;
}
void *
xmppipe_calloc(size_t nmemb, size_t size)
{
char *buf = NULL;
/* XXX overflow */
buf = calloc(nmemb, size);
if (!buf)
err(3, "allocation failure");
return buf;
}
char *
xmppipe_servername(char *jid)
{
char *buf = xmppipe_strdup(jid);
char *p = strchr(buf, '@');
char *q;
if (!p)
return NULL;
*p++ = '\0';
q = xmppipe_strdup(p);
free(buf);
return q;
}
char *
xmppipe_conference(char *room, char *mucservice)
{
size_t len = strlen(room) + 1 + strlen(mucservice) + 1;
char *buf = xmppipe_malloc(len);
(void)snprintf(buf, len, "%s@%s", room, mucservice);
return buf;
}
char *
xmppipe_mucjid(char *muc, char *resource)
{
size_t len = strlen(muc) + 1 + strlen(resource) + 1;
char *buf = xmppipe_malloc(len);
(void)snprintf(buf, len, "%s/%s", muc, resource);
return buf;
}
char *
xmppipe_roomname(char *label)
{
char *buf = NULL;
size_t len = 64;
char name[16] = {0};
buf = xmppipe_malloc(len);
(void)gethostname(name, sizeof(name));
name[sizeof(name)-1] = '\0';
(void)snprintf(buf, len, "%s-%s-%d", label, name, getpid());
return buf;
}