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#include <sys/types.h>
#include <sys/mman.h>
#include <netinet/in.h>
#include <string.h>
#include <netdb.h>
#include <ctype.h>
#include "parselib.h"
static struct state __ps;
void setservent(int stayopen) {
(void)stayopen;
__prepare_parse(_PATH_SERVICES,&__ps);
}
void endservent(void) {
__end_parse(&__ps);
}
#define ALIASES 16
/* "tcpmux 1/tcp # TCP port multiplexer (RFC1078)" */
int getservent_r(struct servent *res, char *buf, size_t buflen,
struct servent **res_sig) {
size_t i,j,n,g;
unsigned long l;
if (!__ps.buffirst) setservent(0);
if (!__ps.buffirst) goto error;
if (__ps.cur>=__ps.buflen) goto error;
res->s_aliases=(char**)buf;
/* getservent */
again:
n=ALIASES*sizeof(char*); g=0;
for (i=0; i<3; ++i) {
char found;
__ps.cur+=__parse_ws(&__ps);
if (__ps.cur>=__ps.buflen) { if (i==2) break; else goto error; }
j=__parse_nws(&__ps);
if (i==2 && j==0) break;
if (!isblank(found=__ps.buffirst[__ps.cur+j])) {
if (found=='#' || (i>1 && found!='\n')) {
parseerror:
while (__ps.cur+j<__ps.buflen) {
if (__ps.buffirst[__ps.cur+j]=='\n') {
__ps.cur+=j+1;
goto again;
}
++j;
}
goto error;
}
}
switch (i) {
case 0:
res->s_name=buf+n;
copy:
if (!j) goto parseerror;
if ((size_t)buflen<=n+j) goto error;
memcpy(buf+n,__ps.buffirst+__ps.cur,j);
buf[n+j]=0;
n+=j+1;
if ((found=='\n' || found=='#') && i==1) i=3;
break;
case 1:
{
int k;
k=scan_ulong(__ps.buffirst+__ps.cur,&l);
if (__ps.buffirst[__ps.cur+k]!='/') {
goto parseerror;
}
res->s_port=htons(l);
res->s_proto=buf+n;
j-=k+1; __ps.cur+=k+1;
goto copy;
}
case 2:
res->s_aliases[g]=buf+n;
++g;
if (g==(ALIASES-1)) break;
--i; /* again */
goto copy;
}
__ps.cur+=j+1;
}
res->s_aliases[g]=0;
*res_sig=res;
return 0;
error:
*res_sig=0;/* the glibc people should be taken behind the barn and shot */
return -1;
}
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