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files >> //proc/thread-self/root/proc/self/root/proc/self/root/usr/include/security/_pam_macros.h
#ifndef PAM_MACROS_H #define PAM_MACROS_H /* * All kind of macros used by PAM, but usable in some other * programs too. * Organized by Cristian Gafton <gafton@redhat.com> */ /* a 'safe' version of strdup */ #include <stdlib.h> #include <string.h> #define x_strdup(s) ( (s) ? strdup(s):NULL ) /* Good policy to strike out passwords with some characters not just free the memory */ #define _pam_overwrite(x) \ do { \ register char *__xx__; \ if ((__xx__=(x))) \ while (*__xx__) \ *__xx__++ = '\0'; \ } while (0) #define _pam_overwrite_n(x,n) \ do { \ register char *__xx__; \ register unsigned int __i__ = 0; \ if ((__xx__=(x))) \ for (;__i__<n; __i__++) \ __xx__[__i__] = 0; \ } while (0) /* * Don't just free it, forget it too. */ #define _pam_drop(X) \ do { \ if (X) { \ free(X); \ X=NULL; \ } \ } while (0) #define _pam_drop_reply(/* struct pam_response * */ reply, /* int */ replies) \ do { \ int reply_i; \ \ for (reply_i=0; reply_i<replies; ++reply_i) { \ if (reply[reply_i].resp) { \ _pam_overwrite(reply[reply_i].resp); \ free(reply[reply_i].resp); \ } \ } \ if (reply) \ free(reply); \ } while (0) /* some debugging code */ #ifdef PAM_DEBUG /* * This provides the necessary function to do debugging in PAM. * Cristian Gafton <gafton@redhat.com> */ #include <stdio.h> #include <sys/types.h> #include <stdarg.h> #include <errno.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> /* * This is for debugging purposes ONLY. DO NOT use on live systems !!! * You have been warned :-) - CG * * to get automated debugging to the log file, it must be created manually. * _PAM_LOGFILE must exist and be writable to the programs you debug. */ #ifndef _PAM_LOGFILE #define _PAM_LOGFILE "/var/run/pam-debug.log" #endif static void _pam_output_debug_info(const char *file, const char *fn , const int line) { FILE *logfile; int must_close = 1, fd; #ifdef O_NOFOLLOW if ((fd = open(_PAM_LOGFILE, O_WRONLY|O_NOFOLLOW|O_APPEND)) != -1) { #else if ((fd = open(_PAM_LOGFILE, O_WRONLY|O_APPEND)) != -1) { #endif if (!(logfile = fdopen(fd,"a"))) { logfile = stderr; must_close = 0; close(fd); } } else { logfile = stderr; must_close = 0; } fprintf(logfile,"[%s:%s(%d)] ",file, fn, line); fflush(logfile); if (must_close) fclose(logfile); } static void _pam_output_debug(const char *format, ...) { va_list args; FILE *logfile; int must_close = 1, fd; va_start(args, format); #ifdef O_NOFOLLOW if ((fd = open(_PAM_LOGFILE, O_WRONLY|O_NOFOLLOW|O_APPEND)) != -1) { #else if ((fd = open(_PAM_LOGFILE, O_WRONLY|O_APPEND)) != -1) { #endif if (!(logfile = fdopen(fd,"a"))) { logfile = stderr; must_close = 0; close(fd); } } else { logfile = stderr; must_close = 0; } vfprintf(logfile, format, args); fprintf(logfile, "\n"); fflush(logfile); if (must_close) fclose(logfile); va_end(args); } #define D(x) do { \ _pam_output_debug_info(__FILE__, __FUNCTION__, __LINE__); \ _pam_output_debug x ; \ } while (0) #define _pam_show_mem(X,XS) do { \ int i; \ register unsigned char *x; \ x = (unsigned char *)X; \ fprintf(stderr, " <start at %p>\n", X); \ for (i = 0; i < XS ; ++x, ++i) { \ fprintf(stderr, " %02X. <%p:%02X>\n", i, x, *x); \ } \ fprintf(stderr, " <end for %p after %d bytes>\n", X, XS); \ } while (0) #define _pam_show_reply(/* struct pam_response * */reply, /* int */replies) \ do { \ int reply_i; \ setbuf(stderr, NULL); \ fprintf(stderr, "array at %p of size %d\n",reply,replies); \ fflush(stderr); \ if (reply) { \ for (reply_i = 0; reply_i < replies; reply_i++) { \ fprintf(stderr, " elem# %d at %p: resp = %p, retcode = %d\n", \ reply_i, reply+reply_i, reply[reply_i].resp, \ reply[reply_i].resp, _retcode); \ fflush(stderr); \ if (reply[reply_i].resp) { \ fprintf(stderr, " resp[%d] = '%s'\n", \ strlen(reply[reply_i].resp), reply[reply_i].resp); \ fflush(stderr); \ } \ } \ } \ fprintf(stderr, "done here\n"); \ fflush(stderr); \ } while (0) #else #define D(x) do { } while (0) #define _pam_show_mem(X,XS) do { } while (0) #define _pam_show_reply(reply, replies) do { } while (0) #endif /* PAM_DEBUG */ #endif /* PAM_MACROS_H */
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