Add function for translating error numbers to a message.

2 files changed, 137 insertions, 1 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 09db8ca..b2b8c56 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -23,7 +23,7 @@ libpwquality_la_LDFLAGS = -no-undefined $(libpwquality_version_script) \
 
 libpwquality_la_LIBADD = @LIBCRACK@
 
-libpwquality_la_SOURCES = generate.c check.c settings.c
+libpwquality_la_SOURCES = generate.c check.c settings.c error.c
 
 pam_pwquality_la_LDFLAGS = -no-undefined -avoid-version -module
 
diff --git a/src/error.c b/src/error.c
new file mode 100644
index 0000000..c1f6e26
--- /dev/null
+++ b/src/error.c
@@ -0,0 +1,136 @@
+/*
+ * libpwquality main API code for translation of errors
+ *
+ * See the end of the file for Copyright and License Information
+ */
+#include "config.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "pwquality.h"
+#include "pwqprivate.h"
+
+/* Create an error message, the auxerror is generated by the library call
+ * and so it can be an arbitrary thing - it does not have to be a pointer
+ * to string. Also in future it might be a string that will have to be
+ * deallocated inside this function. */
+char *
+pwquality_strerror(char *buf, size_t len, int rv, char *auxerror)
+{
+        static char intbuf[PWQ_MAX_ERROR_MESSAGE_LEN];
+
+        if (buf == NULL) {
+                buf = intbuf;
+                len = sizeof(intbuf);
+        }
+
+        switch(rv) {
+        case PWQ_ERROR_MEM_ALLOC:
+                return _("Memory allocation error");
+        case PWQ_ERROR_SAME_PASSWORD:
+                return _("The password is the same as the old one");
+        case PWQ_ERROR_PALINDROME:
+                return _("The password is a palindrome");
+        case PWQ_ERROR_CASE_CHANGES_ONLY:
+                return _("The password differs with case changes only");
+        case PWQ_ERROR_TOO_SIMILAR:
+                return _("The password is too similar to the old one");
+        case PWQ_ERROR_MIN_DIGITS:
+                if (auxerror) {
+                        snprintf(buf, len, _("The password contains less than %d digits"), (int)auxerror);
+                        return buf;
+                }
+                return _("The password contains too few digits");
+        case PWQ_ERROR_MIN_UPPERS:
+                if (auxerror) {
+                        snprintf(buf, len, _("The password contains less than %d uppercase letters"), (int)auxerror);
+                        return buf;
+                }
+                return _("The password contains too few uppercase letters");
+        case PWQ_ERROR_MIN_LOWERS:
+                if (auxerror) {
+                        snprintf(buf, len, _("The password contains less than %d lowercase letters"), (int)auxerror);
+                        return buf;
+                }
+                return _("The password contains too few lowercase letters");
+        case PWQ_ERROR_MIN_OTHERS:
+                if (auxerror) {
+                        snprintf(buf, len, _("The password contains less than %d non-alphanumeric characters"), (int)auxerror);
+                        return buf;
+                }
+                return _("The password contains too few non-alphanumeric characters");
+        case PWQ_ERROR_MIN_LENGTH:
+                if (auxerror) {
+                        snprintf(buf, len, _("The password is shorter than %d characters"), (int)auxerror);
+                        return buf;
+                }
+                return _("The password is too short");
+        case PWQ_ERROR_ROTATED:
+                return _("The password is just rotated old one");
+        case PWQ_ERROR_MIN_CLASSES:
+                if (auxerror) {
+                        snprintf(buf, len, _("The password contains less than %d character classes"), (int)auxerror);
+                        return buf;
+                }
+                return _("The password does not contain enough character classes");
+        case PWQ_ERROR_MAX_CONSECUTIVE:
+                if (auxerror) {
+                        snprintf(buf, len, _("The password contains more than %d same characters consecutively"), (int)auxerror);
+                        return buf;
+                }
+                return _("The password contains too many same characters consecutively");
+        case PWQ_ERROR_EMPTY_PASSWORD:
+                return _("No password supplied");
+        case PWQ_ERROR_RNG:
+                return _("Cannot obtain random numbers from the RNG device");
+        case PWQ_ERROR_GENERATION_FAILED:
+                return _("Password generation failed - required entropy too low for settings");
+        case PWQ_ERROR_CRACKLIB_CHECK:
+                if (auxerror) {
+                        snprintf(buf, len, "%s - %s", _("The password fails the dictionary check"), auxerror);
+                        return buf;
+                }
+                return _("The password fails the dictionary check");
+        default:
+                return _("Unknown error");
+        }
+}
+
+
+/*
+ * Copyright (c) Red Hat, Inc, 2011
+ * Copyright (c) Tomas Mraz <tm@t8m.info>, 2011
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, and the entire permission notice in its entirety,
+ *    including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior
+ *    written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions.  (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+