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Annotation of embedaddon/sudo/plugins/sudoers/regress/check_symbols/check_symbols.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (c) 2012 Todd C. Miller <Todd.Miller@courtesan.com>
                      3:  *
                      4:  * Permission to use, copy, modify, and distribute this software for any
                      5:  * purpose with or without fee is hereby granted, provided that the above
                      6:  * copyright notice and this permission notice appear in all copies.
                      7:  *
                      8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                      9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     15:  */
                     16: 
                     17: #include <config.h>
                     18: 
                     19: #include <sys/types.h>
                     20: #include <stdio.h>
                     21: #ifdef STDC_HEADERS
                     22: # include <stdlib.h>
                     23: # include <stddef.h>
                     24: #else
                     25: # ifdef HAVE_STDLIB_H
                     26: #  include <stdlib.h>
                     27: # endif
                     28: #endif /* STDC_HEADERS */
                     29: #ifdef HAVE_STRING_H
                     30: # if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
                     31: #  include <memory.h>
                     32: # endif
                     33: # include <string.h>
                     34: #endif /* HAVE_STRING_H */
                     35: #ifdef HAVE_STRINGS_H
                     36: # include <strings.h>
                     37: #endif /* HAVE_STRINGS_H */
                     38: #ifdef HAVE_DLOPEN
                     39: # include <dlfcn.h>
                     40: #else
                     41: # include "compat/dlfcn.h"
                     42: #endif
                     43: #include <errno.h>
                     44: #include <limits.h>
                     45: 
                     46: #include "missing.h"
                     47: #include "error.h"
                     48: 
                     49: #ifndef LINE_MAX
                     50: # define LINE_MAX 2048
                     51: #endif
                     52: 
                     53: static void
                     54: usage(void)
                     55: {
                     56:     fprintf(stderr, "usage: load_symbols plugin.so symbols_file\n");
                     57:     exit(1);
                     58: }
                     59: 
                     60: int
                     61: main(int argc, char *argv[])
                     62: {
                     63:     void *handle, *sym;
                     64:     const char *plugin_path;
                     65:     const char *symbols_file;
                     66:     char *cp, line[LINE_MAX];
                     67:     FILE *fp;
                     68:     int ntests = 0, errors = 0;
                     69: 
                     70: #if !defined(HAVE_GETPROGNAME) && !defined(HAVE___PROGNAME)
                     71:     setprogname(argc > 0 ? argv[0] : "check_symbols");
                     72: #endif
                     73: 
                     74:     if (argc != 3)
                     75:        usage();
                     76:     plugin_path = argv[1];
                     77:     symbols_file = argv[2];
                     78: 
                     79:     handle = dlopen(plugin_path, RTLD_LAZY|RTLD_GLOBAL);
                     80:     if (handle == NULL)
                     81:        errorx2(1, "unable to dlopen %s: %s", plugin_path, dlerror());
                     82: 
                     83:     fp = fopen(symbols_file, "r");
                     84:     if (fp == NULL)
                     85:        error2(1, "unable to open %s", symbols_file);
                     86: 
                     87:     while (fgets(line, sizeof(line), fp) != NULL) {
                     88:        ntests++;
                     89:        if ((cp = strchr(line, '\n')) != NULL)
                     90:            *cp = '\0';
                     91:        sym = dlsym(handle, line);
                     92:        if (sym == NULL) {
                     93:            warningx2("unable to resolve symbol %s: %s", line, dlerror());
                     94:            errors++;
                     95:        }
                     96:     }
                     97: 
                     98:     /*
                     99:      * Make sure unexported symbols are not available.
                    100:      */
                    101:     sym = dlsym(handle, "user_in_group");
                    102:     if (sym != NULL) {
                    103:        warningx2("able to resolve local symbol user_in_group");
                    104:        errors++;
                    105:     }
                    106:     ntests++;
                    107: 
                    108:     dlclose(handle);
                    109: 
                    110:     printf("check_symbols: %d tests run, %d errors, %d%% success rate\n",
                    111:        ntests, errors, (ntests - errors) * 100 / ntests);
                    112: 
                    113:     exit(errors);
                    114: }
                    115: 
                    116: void
                    117: cleanup(int gotsig)
                    118: {
                    119:     return;
                    120: }