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/* ========================================================================
* Copyright 2006 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* ========================================================================
*/
#include <system.h>
#include <general.h>
#include "wp_uidmapper_lib.h"
static char *xdigits = "0123456789ABCDEF";
static int do_handshake(char *sockname,
struct iovec *out,int outlen,int *routbytes,
struct iovec *in,int inlen,int *rinbytes) {
int sock,i;
struct msghdr mh;
struct sockaddr_un sun;
#ifdef DGRAM_MODE
sock = socket(AF_UNIX,SOCK_DGRAM,0);
#else
sock = socket(AF_UNIX,SOCK_STREAM,0);
#endif
if(sock < 0) return -1;
sun.sun_family = AF_UNIX;
strcpy(sun.sun_path,sockname);
if(connect(sock,(struct sockaddr*)&sun,sizeof(sun))) return -1;
mh.msg_name = NULL;
mh.msg_namelen = 0;
mh.msg_iov = out;
mh.msg_iovlen = outlen;
mh.msg_control = NULL;
mh.msg_controllen = 0;
mh.msg_flags = 0;
if((i = sendmsg(sock,&mh,0)) == -1) {
close(sock);
return -1;
}
if(routbytes) *routbytes = i;
if(in) {
mh.msg_iov = in;
mh.msg_iovlen = inlen;
mh.msg_flags = 0;
if((i = recvmsg(sock,&mh,0)) == -1) {
close(sock);
return -1;
}
if(rinbytes) *rinbytes = i;
}
close(sock);
return 0;
}
int wp_uidmapper_getuid(char *name,unsigned int *key,int *puid) {
int uid,outbytes,inbytes;
char cmd;
struct iovec out[3],in[1];
cmd = 'u';
out[0].iov_base = &cmd;
out[0].iov_len = 1;
out[1].iov_base = key;
out[1].iov_len = WP_KEY_LEN * sizeof(unsigned int);
out[2].iov_base = name ? name : "";
out[2].iov_len = name ? strlen(name) : 0;
in[0].iov_base = &uid;
in[0].iov_len = sizeof(uid);
if(do_handshake(WP_UIDMAPPER_SOCKET,out,3,&outbytes,in,1,&inbytes))
return -1;
if((outbytes != (1 + out[1].iov_len) + out[2].iov_len) || (inbytes != in[0].iov_len))
return -1;
*puid = uid;
return 0;
}
int wp_uidmapper_getname(int uid,char *name,int namelen) {
int outbytes,inbytes;
char cmd;
struct iovec out[2],in[1];
cmd = 'n';
out[0].iov_base = &cmd;
out[0].iov_len = 1;
out[1].iov_base = &uid;
out[1].iov_len = sizeof(uid);
in[0].iov_base = name;
in[0].iov_len = namelen - 1;
if(do_handshake(WP_UIDMAPPER_SOCKET,out,2,&outbytes,in,1,&inbytes))
return -1;
if(outbytes != (1 + out[1].iov_len)) return -1;
name[inbytes] = 0;
return 0;
}
int wp_uidmapper_clear() {
int outbytes;
char cmd;
struct iovec out[1];
cmd = 'c';
out[0].iov_base = &cmd;
out[0].iov_len = 1;
if(do_handshake(WP_UIDMAPPER_SOCKET,out,1,&outbytes,NULL,0,NULL)) return -1;
if(outbytes != 1) return -1;
return 0;
}
int wp_uidmapper_quit() {
int outbytes;
char cmd;
struct iovec out[1];
cmd = 'q';
out[0].iov_base = &cmd;
out[0].iov_len = 1;
if(do_handshake(WP_UIDMAPPER_SOCKET,out,1,&outbytes,NULL,0,NULL)) return -1;
if(outbytes != 1) return -1;
return 0;
}
int wp_sessid2key(char *ids,unsigned int *ida) {
int i, j, k;
unsigned int n;
char *p;
i = j = 0;
while(1){
n = 0;
for(k = 0; k < 8; k++)
if((p = strchr(xdigits, toupper((int) ids[j++]))) != NULL)
n = (n << 4) | (p - xdigits);
else
return(0);
ida[i] = n;
if(++i == WP_KEY_LEN)
return(ids[j] == '\0');
else if(ids[j++] != '.')
return(0);
}
}
int wp_parse_cookie (char *cookie,char *cname,char *terms,char *cvalue,int vmax) {
char *p, *q;
int i;
if((p = strstr(cookie, cname)) != NULL){
p += strlen(cname) + 1; /* skip cname and equals */
q = cvalue;
while(*p && !strchr(terms, *p)){
*q++ = *p++;
if((q - cvalue) >= vmax)
return(0);
}
*q = '\0';
return(1);
}
return(0);
}
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