/usr/include/security/_pam_macros.h is in libpam0g-dev 1.1.8-3.2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | #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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