2010-03-25 17:46:16 +02:00
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/*
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* uhttpd - Tiny single-threaded httpd - Utility functions
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*
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* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define _XOPEN_SOURCE 500 /* crypt() */
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#define _BSD_SOURCE /* strcasecmp(), strncasecmp() */
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#include "uhttpd.h"
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#include "uhttpd-utils.h"
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#ifdef HAVE_TLS
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#include "uhttpd-tls.h"
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#endif
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static char *uh_index_files[] = {
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"index.html",
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"index.htm",
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"default.html",
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"default.htm"
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};
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const char * sa_straddr(void *sa)
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{
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static char str[INET6_ADDRSTRLEN];
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struct sockaddr_in *v4 = (struct sockaddr_in *)sa;
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struct sockaddr_in6 *v6 = (struct sockaddr_in6 *)sa;
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if( v4->sin_family == AF_INET )
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return inet_ntop(AF_INET, &(v4->sin_addr), str, sizeof(str));
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else
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return inet_ntop(AF_INET6, &(v6->sin6_addr), str, sizeof(str));
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}
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const char * sa_strport(void *sa)
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{
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static char str[6];
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snprintf(str, sizeof(str), "%i", sa_port(sa));
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return str;
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}
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int sa_port(void *sa)
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{
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return ntohs(((struct sockaddr_in6 *)sa)->sin6_port);
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}
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2010-08-11 03:05:34 +03:00
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int sa_rfc1918(void *sa)
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{
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struct sockaddr_in *v4 = (struct sockaddr_in *)sa;
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unsigned long a = htonl(v4->sin_addr.s_addr);
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if( v4->sin_family == AF_INET )
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{
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return ((a >= 0x0A000000) && (a <= 0x0AFFFFFF)) ||
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((a >= 0xAC100000) && (a <= 0xAC1FFFFF)) ||
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((a >= 0xC0A80000) && (a <= 0xC0A8FFFF));
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}
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return 0;
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}
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2010-03-25 17:46:16 +02:00
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/* Simple strstr() like function that takes len arguments for both haystack and needle. */
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char *strfind(char *haystack, int hslen, const char *needle, int ndlen)
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{
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int match = 0;
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int i, j;
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for( i = 0; i < hslen; i++ )
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{
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if( haystack[i] == needle[0] )
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{
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match = ((ndlen == 1) || ((i + ndlen) <= hslen));
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for( j = 1; (j < ndlen) && ((i + j) < hslen); j++ )
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{
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if( haystack[i+j] != needle[j] )
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{
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match = 0;
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break;
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}
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}
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if( match )
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return &haystack[i];
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}
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}
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return NULL;
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}
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2010-03-27 16:31:35 +02:00
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/* interruptable select() */
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int select_intr(int n, fd_set *r, fd_set *w, fd_set *e, struct timeval *t)
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{
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int rv;
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sigset_t ssn, sso;
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/* unblock SIGCHLD */
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sigemptyset(&ssn);
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sigaddset(&ssn, SIGCHLD);
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2010-08-18 03:04:52 +03:00
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sigaddset(&ssn, SIGPIPE);
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2010-03-27 16:31:35 +02:00
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sigprocmask(SIG_UNBLOCK, &ssn, &sso);
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rv = select(n, r, w, e, t);
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/* restore signal mask */
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sigprocmask(SIG_SETMASK, &sso, NULL);
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return rv;
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}
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2010-03-25 17:46:16 +02:00
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2011-11-05 05:19:07 +02:00
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int uh_tcp_send_lowlevel(struct client *cl, const char *buf, int len)
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2010-03-25 17:46:16 +02:00
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{
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fd_set writer;
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struct timeval timeout;
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FD_ZERO(&writer);
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FD_SET(cl->socket, &writer);
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2010-04-15 22:46:35 +03:00
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timeout.tv_sec = cl->server->conf->network_timeout;
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timeout.tv_usec = 0;
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2010-03-25 17:46:16 +02:00
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2011-11-05 05:19:07 +02:00
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if (select(cl->socket + 1, NULL, &writer, NULL, &timeout) > 0)
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return send(cl->socket, buf, len, 0);
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2010-03-25 17:46:16 +02:00
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return -1;
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}
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2011-11-05 05:19:07 +02:00
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int uh_tcp_send(struct client *cl, const char *buf, int len)
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{
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#ifdef HAVE_TLS
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if (cl->tls)
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return cl->server->conf->tls_send(cl, (void *)buf, len);
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else
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#endif
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return uh_tcp_send_lowlevel(cl, buf, len);
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}
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2010-03-25 17:46:16 +02:00
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int uh_tcp_peek(struct client *cl, char *buf, int len)
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{
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2011-11-05 05:19:07 +02:00
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/* sanity check, prevent overflowing peek buffer */
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if (len > sizeof(cl->peekbuf))
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return -1;
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2010-03-25 17:46:16 +02:00
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int sz = uh_tcp_recv(cl, buf, len);
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/* store received data in peek buffer */
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if( sz > 0 )
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{
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cl->peeklen = sz;
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memcpy(cl->peekbuf, buf, sz);
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}
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return sz;
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}
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2011-11-05 05:19:07 +02:00
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int uh_tcp_recv_lowlevel(struct client *cl, char *buf, int len)
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{
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fd_set reader;
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struct timeval timeout;
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FD_ZERO(&reader);
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FD_SET(cl->socket, &reader);
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timeout.tv_sec = cl->server->conf->network_timeout;
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timeout.tv_usec = 0;
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if (select(cl->socket + 1, &reader, NULL, NULL, &timeout) > 0)
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return recv(cl->socket, buf, len, 0);
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return -1;
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}
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2010-03-25 17:46:16 +02:00
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int uh_tcp_recv(struct client *cl, char *buf, int len)
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{
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int sz = 0;
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int rsz = 0;
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/* first serve data from peek buffer */
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2011-11-05 05:19:07 +02:00
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if (cl->peeklen > 0)
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2010-03-25 17:46:16 +02:00
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{
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sz = min(cl->peeklen, len);
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len -= sz; cl->peeklen -= sz;
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memcpy(buf, cl->peekbuf, sz);
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memmove(cl->peekbuf, &cl->peekbuf[sz], cl->peeklen);
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}
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/* caller wants more */
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2011-11-05 05:19:07 +02:00
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if (len > 0)
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2010-03-25 17:46:16 +02:00
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{
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#ifdef HAVE_TLS
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2011-11-05 05:19:07 +02:00
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if (cl->tls)
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rsz = cl->server->conf->tls_recv(cl, (void *)&buf[sz], len);
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else
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2010-03-25 17:46:16 +02:00
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#endif
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2011-11-05 05:19:07 +02:00
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rsz = uh_tcp_recv_lowlevel(cl, (void *)&buf[sz], len);
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2010-03-25 17:46:16 +02:00
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2011-11-05 05:19:07 +02:00
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if (rsz < 0)
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return rsz;
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sz += rsz;
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2010-03-25 17:46:16 +02:00
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}
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return sz;
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}
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int uh_http_sendhf(struct client *cl, int code, const char *summary, const char *fmt, ...)
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{
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va_list ap;
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char buffer[UH_LIMIT_MSGHEAD];
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int len;
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len = snprintf(buffer, sizeof(buffer),
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"HTTP/1.1 %03i %s\r\n"
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"Connection: close\r\n"
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"Content-Type: text/plain\r\n"
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"Transfer-Encoding: chunked\r\n\r\n",
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code, summary
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);
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2010-08-18 03:04:52 +03:00
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ensure_ret(uh_tcp_send(cl, buffer, len));
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2010-03-25 17:46:16 +02:00
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va_start(ap, fmt);
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len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
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va_end(ap);
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2010-08-18 03:04:52 +03:00
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ensure_ret(uh_http_sendc(cl, buffer, len));
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ensure_ret(uh_http_sendc(cl, NULL, 0));
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2010-03-25 17:46:16 +02:00
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return 0;
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}
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int uh_http_sendc(struct client *cl, const char *data, int len)
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{
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char chunk[8];
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int clen;
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if( len == -1 )
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len = strlen(data);
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if( len > 0 )
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{
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2011-01-10 01:35:45 +02:00
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clen = snprintf(chunk, sizeof(chunk), "%X\r\n", len);
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2010-08-18 03:04:52 +03:00
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ensure_ret(uh_tcp_send(cl, chunk, clen));
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ensure_ret(uh_tcp_send(cl, data, len));
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ensure_ret(uh_tcp_send(cl, "\r\n", 2));
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2010-03-25 17:46:16 +02:00
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}
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else
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{
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2010-08-18 03:04:52 +03:00
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ensure_ret(uh_tcp_send(cl, "0\r\n\r\n", 5));
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2010-03-25 17:46:16 +02:00
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}
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return 0;
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}
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int uh_http_sendf(
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struct client *cl, struct http_request *req, const char *fmt, ...
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) {
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va_list ap;
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char buffer[UH_LIMIT_MSGHEAD];
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int len;
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va_start(ap, fmt);
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len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
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va_end(ap);
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if( (req != NULL) && (req->version > 1.0) )
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2010-08-18 03:04:52 +03:00
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ensure_ret(uh_http_sendc(cl, buffer, len));
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2010-03-25 17:46:16 +02:00
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else if( len > 0 )
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2010-08-18 03:04:52 +03:00
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ensure_ret(uh_tcp_send(cl, buffer, len));
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2010-03-25 17:46:16 +02:00
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return 0;
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}
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int uh_http_send(
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struct client *cl, struct http_request *req, const char *buf, int len
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) {
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if( len < 0 )
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len = strlen(buf);
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if( (req != NULL) && (req->version > 1.0) )
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2010-08-18 03:04:52 +03:00
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ensure_ret(uh_http_sendc(cl, buf, len));
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2010-03-25 17:46:16 +02:00
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else if( len > 0 )
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2010-08-18 03:04:52 +03:00
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ensure_ret(uh_tcp_send(cl, buf, len));
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2010-03-25 17:46:16 +02:00
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return 0;
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}
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int uh_urldecode(char *buf, int blen, const char *src, int slen)
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{
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int i;
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int len = 0;
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#define hex(x) \
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(((x) <= '9') ? ((x) - '0') : \
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(((x) <= 'F') ? ((x) - 'A' + 10) : \
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((x) - 'a' + 10)))
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for( i = 0; (i <= slen) && (i <= blen); i++ )
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{
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if( src[i] == '%' )
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{
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if( ((i+2) <= slen) && isxdigit(src[i+1]) && isxdigit(src[i+2]) )
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{
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buf[len++] = (char)(16 * hex(src[i+1]) + hex(src[i+2]));
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i += 2;
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}
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else
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{
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buf[len++] = '%';
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}
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}
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else
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{
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buf[len++] = src[i];
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}
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}
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return len;
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}
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int uh_urlencode(char *buf, int blen, const char *src, int slen)
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{
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int i;
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int len = 0;
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const char hex[] = "0123456789abcdef";
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for( i = 0; (i <= slen) && (i <= blen); i++ )
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{
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if( isalnum(src[i]) || (src[i] == '-') || (src[i] == '_') ||
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(src[i] == '.') || (src[i] == '~') )
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{
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buf[len++] = src[i];
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}
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else if( (len+3) <= blen )
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{
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buf[len++] = '%';
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buf[len++] = hex[(src[i] >> 4) & 15];
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buf[len++] = hex[(src[i] & 15) & 15];
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}
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else
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{
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break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
int uh_b64decode(char *buf, int blen, const unsigned char *src, int slen)
|
|
|
|
{
|
|
|
|
int i = 0;
|
|
|
|
int len = 0;
|
|
|
|
|
|
|
|
unsigned int cin = 0;
|
|
|
|
unsigned int cout = 0;
|
|
|
|
|
|
|
|
|
|
|
|
for( i = 0; (i <= slen) && (src[i] != 0); i++ )
|
|
|
|
{
|
|
|
|
cin = src[i];
|
|
|
|
|
|
|
|
if( (cin >= '0') && (cin <= '9') )
|
|
|
|
cin = cin - '0' + 52;
|
|
|
|
else if( (cin >= 'A') && (cin <= 'Z') )
|
|
|
|
cin = cin - 'A';
|
|
|
|
else if( (cin >= 'a') && (cin <= 'z') )
|
|
|
|
cin = cin - 'a' + 26;
|
|
|
|
else if( cin == '+' )
|
|
|
|
cin = 62;
|
|
|
|
else if( cin == '/' )
|
|
|
|
cin = 63;
|
|
|
|
else if( cin == '=' )
|
|
|
|
cin = 0;
|
|
|
|
else
|
|
|
|
continue;
|
|
|
|
|
|
|
|
cout = (cout << 6) | cin;
|
|
|
|
|
|
|
|
if( (i % 4) == 3 )
|
|
|
|
{
|
|
|
|
if( (len + 3) < blen )
|
|
|
|
{
|
|
|
|
buf[len++] = (char)(cout >> 16);
|
|
|
|
buf[len++] = (char)(cout >> 8);
|
|
|
|
buf[len++] = (char)(cout);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
buf[len++] = 0;
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
2010-04-15 22:46:35 +03:00
|
|
|
static char * canonpath(const char *path, char *path_resolved)
|
|
|
|
{
|
|
|
|
char path_copy[PATH_MAX];
|
|
|
|
char *path_cpy = path_copy;
|
|
|
|
char *path_res = path_resolved;
|
|
|
|
|
|
|
|
struct stat s;
|
|
|
|
|
|
|
|
|
|
|
|
/* relative -> absolute */
|
|
|
|
if( *path != '/' )
|
|
|
|
{
|
|
|
|
getcwd(path_copy, PATH_MAX);
|
|
|
|
strncat(path_copy, "/", PATH_MAX - strlen(path_copy));
|
|
|
|
strncat(path_copy, path, PATH_MAX - strlen(path_copy));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
strncpy(path_copy, path, PATH_MAX);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* normalize */
|
|
|
|
while( (*path_cpy != '\0') && (path_cpy < (path_copy + PATH_MAX - 2)) )
|
|
|
|
{
|
|
|
|
if( *path_cpy == '/' )
|
|
|
|
{
|
|
|
|
/* skip repeating / */
|
|
|
|
if( path_cpy[1] == '/' )
|
|
|
|
{
|
|
|
|
path_cpy++;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* /./ or /../ */
|
|
|
|
else if( path_cpy[1] == '.' )
|
|
|
|
{
|
|
|
|
/* skip /./ */
|
|
|
|
if( (path_cpy[2] == '/') || (path_cpy[2] == '\0') )
|
|
|
|
{
|
|
|
|
path_cpy += 2;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* collapse /x/../ */
|
2010-04-15 23:08:56 +03:00
|
|
|
else if( (path_cpy[2] == '.') &&
|
|
|
|
((path_cpy[3] == '/') || (path_cpy[3] == '\0'))
|
|
|
|
) {
|
2010-04-15 22:46:35 +03:00
|
|
|
while( (path_res > path_resolved) && (*--path_res != '/') )
|
|
|
|
;
|
|
|
|
|
|
|
|
path_cpy += 3;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
*path_res++ = *path_cpy++;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* remove trailing slash if not root / */
|
|
|
|
if( (path_res > (path_resolved+1)) && (path_res[-1] == '/') )
|
|
|
|
path_res--;
|
|
|
|
else if( path_res == path_resolved )
|
|
|
|
*path_res++ = '/';
|
|
|
|
|
|
|
|
*path_res = '\0';
|
|
|
|
|
|
|
|
/* test access */
|
|
|
|
if( !stat(path_resolved, &s) && (s.st_mode & S_IROTH) )
|
|
|
|
return path_resolved;
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
2010-03-25 17:46:16 +02:00
|
|
|
|
|
|
|
struct path_info * uh_path_lookup(struct client *cl, const char *url)
|
|
|
|
{
|
|
|
|
static char path_phys[PATH_MAX];
|
|
|
|
static char path_info[PATH_MAX];
|
|
|
|
static struct path_info p;
|
|
|
|
|
|
|
|
char buffer[UH_LIMIT_MSGHEAD];
|
|
|
|
char *docroot = cl->server->conf->docroot;
|
|
|
|
char *pathptr = NULL;
|
|
|
|
|
2010-11-10 22:52:30 +02:00
|
|
|
int slash = 0;
|
2010-04-15 22:46:35 +03:00
|
|
|
int no_sym = cl->server->conf->no_symlinks;
|
2010-03-25 17:46:16 +02:00
|
|
|
int i = 0;
|
|
|
|
struct stat s;
|
|
|
|
|
2010-07-23 16:15:22 +03:00
|
|
|
/* back out early if url is undefined */
|
|
|
|
if ( url == NULL )
|
|
|
|
return NULL;
|
2010-03-25 17:46:16 +02:00
|
|
|
|
|
|
|
memset(path_phys, 0, sizeof(path_phys));
|
|
|
|
memset(path_info, 0, sizeof(path_info));
|
|
|
|
memset(buffer, 0, sizeof(buffer));
|
|
|
|
memset(&p, 0, sizeof(p));
|
|
|
|
|
|
|
|
/* copy docroot */
|
|
|
|
memcpy(buffer, docroot,
|
|
|
|
min(strlen(docroot), sizeof(buffer) - 1));
|
|
|
|
|
|
|
|
/* separate query string from url */
|
|
|
|
if( (pathptr = strchr(url, '?')) != NULL )
|
|
|
|
{
|
|
|
|
p.query = pathptr[1] ? pathptr + 1 : NULL;
|
|
|
|
|
|
|
|
/* urldecode component w/o query */
|
|
|
|
if( pathptr > url )
|
|
|
|
uh_urldecode(
|
|
|
|
&buffer[strlen(docroot)],
|
|
|
|
sizeof(buffer) - strlen(docroot) - 1,
|
|
|
|
url, (int)(pathptr - url) - 1
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* no query string, decode all of url */
|
|
|
|
else
|
|
|
|
{
|
|
|
|
uh_urldecode(
|
|
|
|
&buffer[strlen(docroot)],
|
|
|
|
sizeof(buffer) - strlen(docroot) - 1,
|
|
|
|
url, strlen(url)
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* create canon path */
|
2010-11-10 22:52:30 +02:00
|
|
|
for( i = strlen(buffer), slash = (buffer[max(0, i-1)] == '/'); i >= 0; i-- )
|
2010-03-25 17:46:16 +02:00
|
|
|
{
|
|
|
|
if( (buffer[i] == 0) || (buffer[i] == '/') )
|
|
|
|
{
|
|
|
|
memset(path_info, 0, sizeof(path_info));
|
|
|
|
memcpy(path_info, buffer, min(i + 1, sizeof(path_info) - 1));
|
|
|
|
|
2010-04-15 22:46:35 +03:00
|
|
|
if( no_sym ? realpath(path_info, path_phys)
|
|
|
|
: canonpath(path_info, path_phys)
|
|
|
|
) {
|
2010-03-25 17:46:16 +02:00
|
|
|
memset(path_info, 0, sizeof(path_info));
|
|
|
|
memcpy(path_info, &buffer[i],
|
|
|
|
min(strlen(buffer) - i, sizeof(path_info) - 1));
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* check whether found path is within docroot */
|
|
|
|
if( strncmp(path_phys, docroot, strlen(docroot)) ||
|
|
|
|
((path_phys[strlen(docroot)] != 0) &&
|
|
|
|
(path_phys[strlen(docroot)] != '/'))
|
|
|
|
) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* test current path */
|
|
|
|
if( ! stat(path_phys, &p.stat) )
|
|
|
|
{
|
|
|
|
/* is a regular file */
|
|
|
|
if( p.stat.st_mode & S_IFREG )
|
|
|
|
{
|
|
|
|
p.root = docroot;
|
|
|
|
p.phys = path_phys;
|
|
|
|
p.name = &path_phys[strlen(docroot)];
|
|
|
|
p.info = path_info[0] ? path_info : NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* is a directory */
|
|
|
|
else if( (p.stat.st_mode & S_IFDIR) && !strlen(path_info) )
|
|
|
|
{
|
|
|
|
/* ensure trailing slash */
|
|
|
|
if( path_phys[strlen(path_phys)-1] != '/' )
|
|
|
|
path_phys[strlen(path_phys)] = '/';
|
|
|
|
|
|
|
|
/* try to locate index file */
|
|
|
|
memset(buffer, 0, sizeof(buffer));
|
|
|
|
memcpy(buffer, path_phys, sizeof(buffer));
|
|
|
|
pathptr = &buffer[strlen(buffer)];
|
|
|
|
|
2010-11-10 22:52:30 +02:00
|
|
|
/* if requested url resolves to a directory and a trailing slash
|
|
|
|
is missing in the request url, redirect the client to the same
|
|
|
|
url with trailing slash appended */
|
|
|
|
if( !slash )
|
|
|
|
{
|
|
|
|
uh_http_sendf(cl, NULL,
|
|
|
|
"HTTP/1.1 302 Found\r\n"
|
|
|
|
"Location: %s%s%s\r\n"
|
|
|
|
"Connection: close\r\n\r\n",
|
|
|
|
&path_phys[strlen(docroot)],
|
|
|
|
p.query ? "?" : "",
|
|
|
|
p.query ? p.query : ""
|
|
|
|
);
|
|
|
|
|
|
|
|
p.redirected = 1;
|
|
|
|
}
|
|
|
|
else if( cl->server->conf->index_file )
|
2010-03-25 17:46:16 +02:00
|
|
|
{
|
2010-07-23 16:15:22 +03:00
|
|
|
strncat(buffer, cl->server->conf->index_file, sizeof(buffer));
|
2010-03-25 17:46:16 +02:00
|
|
|
|
|
|
|
if( !stat(buffer, &s) && (s.st_mode & S_IFREG) )
|
|
|
|
{
|
|
|
|
memcpy(path_phys, buffer, sizeof(path_phys));
|
|
|
|
memcpy(&p.stat, &s, sizeof(p.stat));
|
|
|
|
}
|
2010-07-23 16:15:22 +03:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
for( i = 0; i < array_size(uh_index_files); i++ )
|
|
|
|
{
|
|
|
|
strncat(buffer, uh_index_files[i], sizeof(buffer));
|
2010-03-25 17:46:16 +02:00
|
|
|
|
2010-07-23 16:15:22 +03:00
|
|
|
if( !stat(buffer, &s) && (s.st_mode & S_IFREG) )
|
|
|
|
{
|
|
|
|
memcpy(path_phys, buffer, sizeof(path_phys));
|
|
|
|
memcpy(&p.stat, &s, sizeof(p.stat));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
*pathptr = 0;
|
|
|
|
}
|
2010-03-25 17:46:16 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
p.root = docroot;
|
|
|
|
p.phys = path_phys;
|
|
|
|
p.name = &path_phys[strlen(docroot)];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return p.phys ? &p : NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
static struct auth_realm *uh_realms = NULL;
|
2010-03-25 17:46:16 +02:00
|
|
|
|
|
|
|
struct auth_realm * uh_auth_add(char *path, char *user, char *pass)
|
|
|
|
{
|
|
|
|
struct auth_realm *new = NULL;
|
|
|
|
struct passwd *pwd;
|
2010-11-06 18:19:04 +02:00
|
|
|
|
|
|
|
#ifdef HAVE_SHADOW
|
2010-03-25 17:46:16 +02:00
|
|
|
struct spwd *spwd;
|
2010-11-06 18:19:04 +02:00
|
|
|
#endif
|
2010-03-25 17:46:16 +02:00
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
if((new = (struct auth_realm *)malloc(sizeof(struct auth_realm))) != NULL)
|
2010-03-25 17:46:16 +02:00
|
|
|
{
|
|
|
|
memset(new, 0, sizeof(struct auth_realm));
|
|
|
|
|
|
|
|
memcpy(new->path, path,
|
|
|
|
min(strlen(path), sizeof(new->path) - 1));
|
|
|
|
|
|
|
|
memcpy(new->user, user,
|
|
|
|
min(strlen(user), sizeof(new->user) - 1));
|
|
|
|
|
|
|
|
/* given password refers to a passwd entry */
|
|
|
|
if( (strlen(pass) > 3) && !strncmp(pass, "$p$", 3) )
|
|
|
|
{
|
2010-11-06 18:19:04 +02:00
|
|
|
#ifdef HAVE_SHADOW
|
2010-03-25 17:46:16 +02:00
|
|
|
/* try to resolve shadow entry */
|
|
|
|
if( ((spwd = getspnam(&pass[3])) != NULL) && spwd->sp_pwdp )
|
|
|
|
{
|
|
|
|
memcpy(new->pass, spwd->sp_pwdp,
|
|
|
|
min(strlen(spwd->sp_pwdp), sizeof(new->pass) - 1));
|
|
|
|
}
|
|
|
|
|
2010-11-06 18:19:04 +02:00
|
|
|
else
|
|
|
|
#endif
|
|
|
|
|
2010-03-25 17:46:16 +02:00
|
|
|
/* try to resolve passwd entry */
|
2010-11-06 18:19:04 +02:00
|
|
|
if( ((pwd = getpwnam(&pass[3])) != NULL) && pwd->pw_passwd &&
|
2010-03-25 17:46:16 +02:00
|
|
|
(pwd->pw_passwd[0] != '!') && (pwd->pw_passwd[0] != 0)
|
|
|
|
) {
|
|
|
|
memcpy(new->pass, pwd->pw_passwd,
|
|
|
|
min(strlen(pwd->pw_passwd), sizeof(new->pass) - 1));
|
2010-08-18 03:04:52 +03:00
|
|
|
}
|
2010-03-25 17:46:16 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* ordinary pwd */
|
|
|
|
else
|
|
|
|
{
|
|
|
|
memcpy(new->pass, pass,
|
|
|
|
min(strlen(pass), sizeof(new->pass) - 1));
|
|
|
|
}
|
|
|
|
|
2010-04-24 14:07:41 +03:00
|
|
|
if( new->pass[0] )
|
|
|
|
{
|
2010-08-14 03:54:24 +03:00
|
|
|
new->next = uh_realms;
|
|
|
|
uh_realms = new;
|
|
|
|
|
2010-04-24 14:07:41 +03:00
|
|
|
return new;
|
|
|
|
}
|
2010-08-14 03:54:24 +03:00
|
|
|
|
|
|
|
free(new);
|
2010-03-25 17:46:16 +02:00
|
|
|
}
|
|
|
|
|
2010-04-24 14:07:41 +03:00
|
|
|
return NULL;
|
2010-03-25 17:46:16 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
int uh_auth_check(
|
|
|
|
struct client *cl, struct http_request *req, struct path_info *pi
|
|
|
|
) {
|
|
|
|
int i, plen, rlen, protected;
|
|
|
|
char buffer[UH_LIMIT_MSGHEAD];
|
|
|
|
char *user = NULL;
|
|
|
|
char *pass = NULL;
|
|
|
|
|
|
|
|
struct auth_realm *realm = NULL;
|
|
|
|
|
|
|
|
plen = strlen(pi->name);
|
|
|
|
protected = 0;
|
|
|
|
|
|
|
|
/* check whether at least one realm covers the requested url */
|
2010-08-14 03:54:24 +03:00
|
|
|
for( realm = uh_realms; realm; realm = realm->next )
|
2010-03-25 17:46:16 +02:00
|
|
|
{
|
|
|
|
rlen = strlen(realm->path);
|
|
|
|
|
|
|
|
if( (plen >= rlen) && !strncasecmp(pi->name, realm->path, rlen) )
|
|
|
|
{
|
|
|
|
req->realm = realm;
|
|
|
|
protected = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* requested resource is covered by a realm */
|
|
|
|
if( protected )
|
|
|
|
{
|
|
|
|
/* try to get client auth info */
|
|
|
|
foreach_header(i, req->headers)
|
|
|
|
{
|
|
|
|
if( !strcasecmp(req->headers[i], "Authorization") &&
|
|
|
|
(strlen(req->headers[i+1]) > 6) &&
|
|
|
|
!strncasecmp(req->headers[i+1], "Basic ", 6)
|
|
|
|
) {
|
|
|
|
memset(buffer, 0, sizeof(buffer));
|
|
|
|
uh_b64decode(buffer, sizeof(buffer) - 1,
|
|
|
|
(unsigned char *) &req->headers[i+1][6],
|
|
|
|
strlen(req->headers[i+1]) - 6);
|
|
|
|
|
|
|
|
if( (pass = strchr(buffer, ':')) != NULL )
|
|
|
|
{
|
|
|
|
user = buffer;
|
|
|
|
*pass++ = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* have client auth */
|
|
|
|
if( user && pass )
|
|
|
|
{
|
|
|
|
/* find matching realm */
|
2010-08-14 03:54:24 +03:00
|
|
|
for( realm = uh_realms; realm; realm = realm->next )
|
2010-03-25 17:46:16 +02:00
|
|
|
{
|
|
|
|
rlen = strlen(realm->path);
|
|
|
|
|
|
|
|
if( (plen >= rlen) &&
|
|
|
|
!strncasecmp(pi->name, realm->path, rlen) &&
|
|
|
|
!strcmp(user, realm->user)
|
|
|
|
) {
|
|
|
|
req->realm = realm;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* found a realm matching the username */
|
|
|
|
if( realm )
|
|
|
|
{
|
|
|
|
/* check user pass */
|
2011-11-09 20:55:28 +02:00
|
|
|
if (!strcmp(pass, realm->pass) ||
|
|
|
|
!strcmp(crypt(pass, realm->pass), realm->pass))
|
2010-03-25 17:46:16 +02:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 401 */
|
|
|
|
uh_http_sendf(cl, NULL,
|
|
|
|
"HTTP/%.1f 401 Authorization Required\r\n"
|
|
|
|
"WWW-Authenticate: Basic realm=\"%s\"\r\n"
|
|
|
|
"Content-Type: text/plain\r\n"
|
|
|
|
"Content-Length: 23\r\n\r\n"
|
|
|
|
"Authorization Required\n",
|
|
|
|
req->version, cl->server->conf->realm
|
|
|
|
);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
static struct listener *uh_listeners = NULL;
|
|
|
|
static struct client *uh_clients = NULL;
|
2010-03-25 17:46:16 +02:00
|
|
|
|
|
|
|
struct listener * uh_listener_add(int sock, struct config *conf)
|
|
|
|
{
|
|
|
|
struct listener *new = NULL;
|
|
|
|
socklen_t sl;
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
if( (new = (struct listener *)malloc(sizeof(struct listener))) != NULL )
|
2010-03-25 17:46:16 +02:00
|
|
|
{
|
2010-08-14 03:54:24 +03:00
|
|
|
memset(new, 0, sizeof(struct listener));
|
2010-03-25 17:46:16 +02:00
|
|
|
|
|
|
|
new->socket = sock;
|
|
|
|
new->conf = conf;
|
|
|
|
|
|
|
|
/* get local endpoint addr */
|
|
|
|
sl = sizeof(struct sockaddr_in6);
|
|
|
|
memset(&(new->addr), 0, sl);
|
|
|
|
getsockname(sock, (struct sockaddr *) &(new->addr), &sl);
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
new->next = uh_listeners;
|
|
|
|
uh_listeners = new;
|
|
|
|
|
|
|
|
return new;
|
2010-03-25 17:46:16 +02:00
|
|
|
}
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
return NULL;
|
2010-03-25 17:46:16 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
struct listener * uh_listener_lookup(int sock)
|
|
|
|
{
|
|
|
|
struct listener *cur = NULL;
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
for( cur = uh_listeners; cur; cur = cur->next )
|
2010-03-25 17:46:16 +02:00
|
|
|
if( cur->socket == sock )
|
|
|
|
return cur;
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
struct client * uh_client_add(int sock, struct listener *serv)
|
|
|
|
{
|
|
|
|
struct client *new = NULL;
|
|
|
|
socklen_t sl;
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
if( (new = (struct client *)malloc(sizeof(struct client))) != NULL )
|
2010-03-25 17:46:16 +02:00
|
|
|
{
|
2010-08-14 03:54:24 +03:00
|
|
|
memset(new, 0, sizeof(struct client));
|
2010-03-25 17:46:16 +02:00
|
|
|
|
|
|
|
new->socket = sock;
|
|
|
|
new->server = serv;
|
|
|
|
|
|
|
|
/* get remote endpoint addr */
|
|
|
|
sl = sizeof(struct sockaddr_in6);
|
|
|
|
memset(&(new->peeraddr), 0, sl);
|
|
|
|
getpeername(sock, (struct sockaddr *) &(new->peeraddr), &sl);
|
|
|
|
|
|
|
|
/* get local endpoint addr */
|
|
|
|
sl = sizeof(struct sockaddr_in6);
|
|
|
|
memset(&(new->servaddr), 0, sl);
|
|
|
|
getsockname(sock, (struct sockaddr *) &(new->servaddr), &sl);
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
new->next = uh_clients;
|
|
|
|
uh_clients = new;
|
2010-03-25 17:46:16 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
return new;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct client * uh_client_lookup(int sock)
|
|
|
|
{
|
|
|
|
struct client *cur = NULL;
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
for( cur = uh_clients; cur; cur = cur->next )
|
2010-03-25 17:46:16 +02:00
|
|
|
if( cur->socket == sock )
|
|
|
|
return cur;
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
void uh_client_remove(int sock)
|
|
|
|
{
|
2010-08-14 03:54:24 +03:00
|
|
|
struct client *cur = NULL;
|
|
|
|
struct client *prv = NULL;
|
|
|
|
|
|
|
|
for( cur = uh_clients; cur; prv = cur, cur = cur->next )
|
|
|
|
{
|
|
|
|
if( cur->socket == sock )
|
|
|
|
{
|
|
|
|
if( prv )
|
|
|
|
prv->next = cur->next;
|
|
|
|
else
|
|
|
|
uh_clients = cur->next;
|
|
|
|
|
|
|
|
free(cur);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef HAVE_CGI
|
|
|
|
static struct interpreter *uh_interpreters = NULL;
|
|
|
|
|
|
|
|
struct interpreter * uh_interpreter_add(const char *extn, const char *path)
|
|
|
|
{
|
|
|
|
struct interpreter *new = NULL;
|
2010-03-25 17:46:16 +02:00
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
if( (new = (struct interpreter *)
|
|
|
|
malloc(sizeof(struct interpreter))) != NULL )
|
2010-03-25 17:46:16 +02:00
|
|
|
{
|
2010-08-14 03:54:24 +03:00
|
|
|
memset(new, 0, sizeof(struct interpreter));
|
|
|
|
|
|
|
|
memcpy(new->extn, extn, min(strlen(extn), sizeof(new->extn)-1));
|
|
|
|
memcpy(new->path, path, min(strlen(path), sizeof(new->path)-1));
|
|
|
|
|
|
|
|
new->next = uh_interpreters;
|
|
|
|
uh_interpreters = new;
|
2010-03-25 17:46:16 +02:00
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
return new;
|
2010-03-25 17:46:16 +02:00
|
|
|
}
|
2010-08-14 03:54:24 +03:00
|
|
|
|
|
|
|
return NULL;
|
2010-03-25 17:46:16 +02:00
|
|
|
}
|
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
struct interpreter * uh_interpreter_lookup(const char *path)
|
|
|
|
{
|
|
|
|
struct interpreter *cur = NULL;
|
|
|
|
const char *e;
|
|
|
|
|
|
|
|
for( cur = uh_interpreters; cur; cur = cur->next )
|
|
|
|
{
|
|
|
|
e = &path[max(strlen(path) - strlen(cur->extn), 0)];
|
2010-03-25 17:46:16 +02:00
|
|
|
|
2010-08-14 03:54:24 +03:00
|
|
|
if( !strcmp(e, cur->extn) )
|
|
|
|
return cur;
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
#endif
|