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/*
* userv - lib.c
* useful utility routines, used in daemon, but not very dependent on it
*
* userv is copyright Ian Jackson and other contributors.
* See README for full authorship information.
*
* This 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 3 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 userv; if not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <syslog.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <sys/types.h>
#include "config.h"
#include "common.h"
#include "lib.h"
#include "both.h"
char *xstrcat3save(const char *a, const char *b, const char *c) {
char *r;
r= xmalloc(strlen(a)+strlen(b)+strlen(c)+1);
strcpy(r,a);
strcat(r,b);
strcat(r,c);
return r;
}
char *xstrsubsave(const char *begin, int len) {
char *r;
r= xmalloc(len+1);
memcpy(r,begin,len);
r[len]= 0;
return r;
}
int makeroom(char **buffer, int *size, int needed) {
if (needed > MAX_GENERAL_STRING) return -1;
if (*size >= needed) return 0;
*buffer= xrealloc(*buffer,needed);
*size= needed;
return 0;
}
void vsnyprintf(char *buffer, size_t size, const char *fmt, va_list al) {
vsnprintf(buffer,size,fmt,al);
buffer[size-1]= 0;
}
void snyprintf(char *buffer, size_t size, const char *fmt, ...) {
va_list al;
va_start(al,fmt);
vsnyprintf(buffer,size,fmt,al);
va_end(al);
}
void strnycpy(char *dest, const char *src, size_t size) {
strncpy(dest,src,size-1);
dest[size-1]= 0;
}
void strnytcat(char *dest, const char *src, size_t size) {
size_t l;
l= strlen(dest);
strnycpy(dest+l,src,size-l);
}
void vsnytprintfcat(char *buffer, size_t size, const char *fmt, va_list al) {
size_t l;
l= strlen(buffer);
vsnyprintf(buffer+l,size-l,fmt,al);
}
void snytprintfcat(char *buffer, size_t size, const char *fmt, ...) {
va_list al;
va_start(al,fmt);
vsnytprintfcat(buffer,size,fmt,al);
va_end(al);
}
#ifndef HAVE_SETENV
int setenv(const char *name, const char *value, int overwrite) {
char *buffer= 0;
assert(overwrite==1);
buffer= xmalloc(strlen(name)+strlen(value)+2);
sprintf(buffer,"%s=%s",name,value);
return putenv(buffer);
}
#endif /* HAVE_SETENV */
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