1*b1cdbd2cSJim Jagielski /**************************************************************
2*b1cdbd2cSJim Jagielski *
3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one
4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file
5*b1cdbd2cSJim Jagielski * distributed with this work for additional information
6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file
7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the
8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance
9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at
10*b1cdbd2cSJim Jagielski *
11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0
12*b1cdbd2cSJim Jagielski *
13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing,
14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an
15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the
17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations
18*b1cdbd2cSJim Jagielski * under the License.
19*b1cdbd2cSJim Jagielski *
20*b1cdbd2cSJim Jagielski *************************************************************/
21*b1cdbd2cSJim Jagielski
22*b1cdbd2cSJim Jagielski
23*b1cdbd2cSJim Jagielski
24*b1cdbd2cSJim Jagielski
25*b1cdbd2cSJim Jagielski #include <stdio.h>
26*b1cdbd2cSJim Jagielski #include <string.h>
27*b1cdbd2cSJim Jagielski #include <errno.h>
28*b1cdbd2cSJim Jagielski #include <unistd.h>
29*b1cdbd2cSJim Jagielski #include <dlfcn.h>
30*b1cdbd2cSJim Jagielski
31*b1cdbd2cSJim Jagielski /*
32*b1cdbd2cSJim Jagielski * NOTE: Since no one is really interested in correct unload behavior I've
33*b1cdbd2cSJim Jagielski * disabled the shared library unload check. If you want to reenable it comment
34*b1cdbd2cSJim Jagielski * the following line out
35*b1cdbd2cSJim Jagielski */
36*b1cdbd2cSJim Jagielski #define NO_UNLOAD_CHECK
37*b1cdbd2cSJim Jagielski
38*b1cdbd2cSJim Jagielski static const char *pprog_name = "checkdll";
39*b1cdbd2cSJim Jagielski static const char *psymbol = "GetVersionInfo";
40*b1cdbd2cSJim Jagielski
usage()41*b1cdbd2cSJim Jagielski void usage()
42*b1cdbd2cSJim Jagielski {
43*b1cdbd2cSJim Jagielski fprintf(stderr, "usage: %s [-s] <dllname>\n", pprog_name);
44*b1cdbd2cSJim Jagielski return;
45*b1cdbd2cSJim Jagielski }
46*b1cdbd2cSJim Jagielski
main(int argc,char * argv[])47*b1cdbd2cSJim Jagielski int main(int argc, char *argv[])
48*b1cdbd2cSJim Jagielski {
49*b1cdbd2cSJim Jagielski int rc;
50*b1cdbd2cSJim Jagielski int silent=0;
51*b1cdbd2cSJim Jagielski void *phandle;
52*b1cdbd2cSJim Jagielski char *(*pfun)(void);
53*b1cdbd2cSJim Jagielski
54*b1cdbd2cSJim Jagielski if ( argc < 2 || argc > 4) {
55*b1cdbd2cSJim Jagielski usage();
56*b1cdbd2cSJim Jagielski return 1;
57*b1cdbd2cSJim Jagielski }
58*b1cdbd2cSJim Jagielski
59*b1cdbd2cSJim Jagielski if ( !strcmp(argv[1],"-s") ) {
60*b1cdbd2cSJim Jagielski silent = 1;
61*b1cdbd2cSJim Jagielski ++argv, --argc;
62*b1cdbd2cSJim Jagielski }
63*b1cdbd2cSJim Jagielski
64*b1cdbd2cSJim Jagielski if ( (rc = access( argv[1], R_OK )) == -1 ) {
65*b1cdbd2cSJim Jagielski fprintf(stderr, "%s: ERROR: %s: %s\n",
66*b1cdbd2cSJim Jagielski pprog_name, argv[1], strerror(errno));
67*b1cdbd2cSJim Jagielski return 2;
68*b1cdbd2cSJim Jagielski }
69*b1cdbd2cSJim Jagielski
70*b1cdbd2cSJim Jagielski if (!silent) printf("Checking DLL %s ...", argv[1]);
71*b1cdbd2cSJim Jagielski fflush(stdout);
72*b1cdbd2cSJim Jagielski
73*b1cdbd2cSJim Jagielski if ( (phandle = dlopen(argv[1], RTLD_NOW)) != NULL ) {
74*b1cdbd2cSJim Jagielski if ( (pfun = (char *(*)(void))dlsym(phandle, psymbol)) != NULL ) {
75*b1cdbd2cSJim Jagielski if (!silent) printf(": ok\n");
76*b1cdbd2cSJim Jagielski }
77*b1cdbd2cSJim Jagielski else
78*b1cdbd2cSJim Jagielski {
79*b1cdbd2cSJim Jagielski printf(": WARNING: %s\n", dlerror());
80*b1cdbd2cSJim Jagielski }
81*b1cdbd2cSJim Jagielski #ifdef NO_UNLOAD_CHECK
82*b1cdbd2cSJim Jagielski _exit(0);
83*b1cdbd2cSJim Jagielski #else
84*b1cdbd2cSJim Jagielski dlclose(phandle);
85*b1cdbd2cSJim Jagielski #endif
86*b1cdbd2cSJim Jagielski return 0;
87*b1cdbd2cSJim Jagielski }
88*b1cdbd2cSJim Jagielski
89*b1cdbd2cSJim Jagielski printf(": ERROR: %s\n", dlerror());
90*b1cdbd2cSJim Jagielski return 3;
91*b1cdbd2cSJim Jagielski }
92*b1cdbd2cSJim Jagielski
93*b1cdbd2cSJim Jagielski
94