removed functions from faked symbol list, not needed anymore with RTLD_LAZY
[strongswan.git] / src / checksum / checksum_builder.c
1 /*
2 * Copyright (C) 2009 Martin Willi
3 * Hochschule fuer Technik Rapperswil, Switzerland
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #include <stdlib.h>
17 #include <stdio.h>
18 #include <dlfcn.h>
19
20 #include <library.h>
21
22 /* we need to fake some charon symbols to dlopen() its plugins */
23 void *charon, *eap_type_names, *auth_class_names, *protocol_id_names,
24 *action_names, *ipsec_mode_names, *ike_sa_state_names, *child_sa_state_names,
25 *policy_dir_names, *ipcomp_transform_names, *debug_names, *controller_cb_empty;
26
27 int main(int argc, char* argv[])
28 {
29 int i;
30 integrity_checker_t *integrity;
31
32 /* avoid confusing leak reports in build process */
33 setenv("LEAK_DETECTIVE_DISABLE", "1", 0);
34 library_init(NULL);
35 atexit(library_deinit);
36
37 integrity = integrity_checker_create(NULL);
38
39 printf("/**\n");
40 printf(" * checksums of files and loaded code segments.\n");
41 printf(" * created by %s\n", argv[0]);
42 printf(" */\n");
43 printf("\n");
44 printf("#include <library.h>\n");
45 printf("\n");
46 printf("integrity_checksum_t checksums[] = {\n");
47 for (i = 1; i < argc; i++)
48 {
49 char *name, *path, *sname;
50 void *handle, *symbol;
51 u_int32_t fsum, ssum;
52
53 path = argv[i];
54
55 if ((name = strstr(path, "libstrongswan-")))
56 {
57 name = strdup(name + strlen("libstrongswan-"));
58 name[strlen(name) - 3] = '"';
59 name[strlen(name) - 2] = ',';
60 name[strlen(name) - 1] = '\0';
61 sname = "plugin_create";
62 }
63 else if (strstr(path, "libstrongswan.so"))
64 {
65 name = strdup("libstrongswan\",");
66 sname = "library_init";
67 }
68 else
69 {
70 fprintf(stderr, "don't know how to handle '%s', ignored", path);
71 continue;
72 }
73
74 fsum = integrity->build_file(integrity, path);
75 ssum = 0;
76 handle = dlopen(path, RTLD_LAZY);
77 if (handle)
78 {
79 symbol = dlsym(handle, sname);
80 if (symbol)
81 {
82 ssum = integrity->build_segment(integrity, symbol);
83 }
84 else
85 {
86 fprintf(stderr, "symbol lookup failed: %s\n", dlerror());
87 }
88 dlclose(handle);
89 }
90 else
91 {
92 fprintf(stderr, "dlopen failed: %s\n", dlerror());
93 }
94
95 printf("\t{\"%-20s0x%08x, 0x%08x},\n", name, fsum, ssum);
96 free(name);
97 }
98 printf("};\n");
99 printf("\n");
100 printf("int checksum_count = countof(checksums);\n");
101 printf("\n");
102 integrity->destroy(integrity);
103
104 exit(0);
105 }
106