Adding upstream version 1.3.1.upstream/1.3.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 196 insertions, 0 deletions

diff --git a/libpam/include/security/_pam_macros.h b/libpam/include/security/_pam_macros.h
new file mode 100644
index 0000000..e891e22
--- /dev/null
+++ b/libpam/include/security/_pam_macros.h
@@ -0,0 +1,196 @@
+#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 */