Blame SOURCES/check-password.patch

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--- a/check_password.c	2009-10-31 18:59:06.000000000 +0100
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+++ b/check_password.c	2014-12-17 12:25:00.148900907 +0100
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@@ -10,7 +10,7 @@
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 #include <slap.h>
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 #ifdef HAVE_CRACKLIB
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-#include "crack.h"
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+#include <crack.h>
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 #endif
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 #if defined(DEBUG)
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@@ -34,18 +34,77 @@
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 #define PASSWORD_TOO_SHORT_SZ \
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 	"Password for dn=\"%s\" is too short (%d/6)"
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 #define PASSWORD_QUALITY_SZ \
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-	"Password for dn=\"%s\" does not pass required number of strength checks (%d of %d)"
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+	"Password for dn=\"%s\" does not pass required number of strength checks for the required character sets (%d of %d)"
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 #define BAD_PASSWORD_SZ \
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 	"Bad password for dn=\"%s\" because %s"
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+#define UNKNOWN_ERROR_SZ \
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+	"An unknown error occurred, please see your systems administrator"
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 typedef int (*validator) (char*);
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-static int read_config_file (char *);
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+static int read_config_file ();
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 static validator valid_word (char *);
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 static int set_quality (char *);
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 static int set_cracklib (char *);
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 int check_password (char *pPasswd, char **ppErrStr, Entry *pEntry);
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+struct config_entry {
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+	char* key;
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+	char* value;
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+	char* def_value;
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+} config_entries[] = { { "minPoints", NULL, "3"},
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+		       { "useCracklib", NULL, "1"},
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+		       { "minUpper", NULL, "0"},
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+		       { "minLower", NULL, "0"},
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+		       { "minDigit", NULL, "0"},
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+		       { "minPunct", NULL, "0"},
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+		       { NULL, NULL, NULL }};
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+
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+int get_config_entry_int(char* entry) {
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+	struct config_entry* centry = config_entries;
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+
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+	int i = 0;
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+	char* key = centry[i].key;
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+	while (key != NULL) {
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+		if ( strncmp(key, entry, strlen(key)) == 0 ) {
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+			if ( centry[i].value == NULL ) {
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+				return atoi(centry[i].def_value);
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+			}
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+			else {
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+				return atoi(centry[i].value);
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+			}
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+		}
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+		i++;
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+		key = centry[i].key;
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+	}
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+
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+	return -1;
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+}
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+
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+void dealloc_config_entries() {
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+	struct config_entry* centry = config_entries;
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+
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+	int i = 0;
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+	while (centry[i].key != NULL) {
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+		if ( centry[i].value != NULL ) {
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+			ber_memfree(centry[i].value);
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+		}
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+		i++;
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+	}
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+}
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+
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+char* chomp(char *s)
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+{
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+	char* t = ber_memalloc(strlen(s)+1);
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+	strncpy (t,s,strlen(s)+1);
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+
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+	if ( t[strlen(t)-1] == '\n' ) {
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+		t[strlen(t)-1] = '\0';
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+	}
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+
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+	return t;
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+}
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+
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 static int set_quality (char *value)
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 {
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 #if defined(DEBUG)
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@@ -84,12 +143,12 @@
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 		char * parameter;
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 		validator dealer;
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 	} list[] = { { "minPoints", set_quality },
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-		{ "useCracklib", set_cracklib },
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-		{ "minUpper", set_digit },
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-		{ "minLower", set_digit },
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-		{ "minDigit", set_digit },
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-		{ "minPunct", set_digit },
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-		{ NULL, NULL } };
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+		     { "useCracklib", set_cracklib },
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+		     { "minUpper", set_digit },
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+		     { "minLower", set_digit },
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+		     { "minDigit", set_digit },
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+		     { "minPunct", set_digit },
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+		     { NULL, NULL } };
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 	int index = 0;
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 #if defined(DEBUG)
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@@ -98,7 +157,7 @@
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 	while (list[index].parameter != NULL) {
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 		if (strlen(word) == strlen(list[index].parameter) &&
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-				strcmp(list[index].parameter, word) == 0) {
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+		    strcmp(list[index].parameter, word) == 0) {
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 #if defined(DEBUG)
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 			syslog(LOG_NOTICE, "check_password: Parameter accepted.");
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 #endif
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@@ -114,13 +173,15 @@
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 	return NULL;
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 }
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-static int read_config_file (char *keyWord)
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+static int read_config_file ()
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 {
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 	FILE * config;
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 	char * line;
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 	int returnValue =  -1;
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-	if ((line = ber_memcalloc(260, sizeof(char))) == NULL) {
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+	line = ber_memcalloc(260, sizeof(char));
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+
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+	if ( line == NULL ) {
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 		return returnValue;
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 	}
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@@ -133,6 +194,8 @@
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 		return returnValue;
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 	}
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+	returnValue = 0;
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+
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 	while (fgets(line, 256, config) != NULL) {
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 		char *start = line;
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 		char *word, *value;
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@@ -145,23 +208,40 @@
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 		while (isspace(*start) && isascii(*start)) start++;
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-		if (! isascii(*start))
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+		/* If we've got punctuation, just skip the line. */
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+		if ( ispunct(*start)) {
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+#if defined(DEBUG)
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+			/* Debug traces to syslog. */
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+			syslog(LOG_NOTICE, "check_password: Skipped line |%s|", line);
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+#endif
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 			continue;
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+		}
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-		if ((word = strtok(start, " \t")) && (dealer = valid_word(word)) && (strcmp(keyWord,word)==0)) {
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-			if ((value = strtok(NULL, " \t")) == NULL)
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-				continue;
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+		if( isascii(*start)) {
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+
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+			struct config_entry* centry = config_entries;
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+			int i = 0;
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+			char* keyWord = centry[i].key;
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+			if ((word = strtok(start, " \t")) && (value = strtok(NULL, " \t"))) {
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+				while ( keyWord != NULL ) {
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+					if ((strncmp(keyWord,word,strlen(keyWord)) == 0) && (dealer = valid_word(word)) ) {
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 #if defined(DEBUG)
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-			syslog(LOG_NOTICE, "check_password: Word = %s, value = %s", word, value);
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+						syslog(LOG_NOTICE, "check_password: Word = %s, value = %s", word, value);
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 #endif
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-			returnValue = (*dealer)(value);
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+						centry[i].value = chomp(value);
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+						break;
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+					}
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+					i++;
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+					keyWord = centry[i].key;
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+				}
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+			}
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 		}
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 	}
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-
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 	fclose(config);
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 	ber_memfree(line);
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+
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 	return returnValue;
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 }
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@@ -170,7 +250,7 @@
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 	if (curlen < nextlen + MEMORY_MARGIN) {
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 #if defined(DEBUG)
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 		syslog(LOG_WARNING, "check_password: Reallocating szErrStr from %d to %d",
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-				curlen, nextlen + MEMORY_MARGIN);
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+		       curlen, nextlen + MEMORY_MARGIN);
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 #endif
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 		ber_memfree(*target);
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 		curlen = nextlen + MEMORY_MARGIN;
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@@ -180,7 +260,7 @@
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 	return curlen;
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 }
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-	int
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+int
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 check_password (char *pPasswd, char **ppErrStr, Entry *pEntry)
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 {
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@@ -210,20 +290,22 @@
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 	nLen = strlen (pPasswd);
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 	if ( nLen < 6) {
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 		mem_len = realloc_error_message(&szErrStr, mem_len,
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-				strlen(PASSWORD_TOO_SHORT_SZ) +
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-				strlen(pEntry->e_name.bv_val) + 1);
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+						strlen(PASSWORD_TOO_SHORT_SZ) +
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+						strlen(pEntry->e_name.bv_val) + 1);
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 		sprintf (szErrStr, PASSWORD_TOO_SHORT_SZ, pEntry->e_name.bv_val, nLen);
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 		goto fail;
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 	}
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-	/* Read config file */
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-	minQuality = read_config_file("minPoints");
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+	if (read_config_file() == -1) {
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+		syslog(LOG_ERR, "Warning: Could not read values from config file %s. Using defaults.", CONFIG_FILE);
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+	}
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-	useCracklib = read_config_file("useCracklib");
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-	minUpper = read_config_file("minUpper");
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-	minLower = read_config_file("minLower");
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-	minDigit = read_config_file("minDigit");
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-	minPunct = read_config_file("minPunct");
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+	minQuality = get_config_entry_int("minPoints");
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+	useCracklib = get_config_entry_int("useCracklib");
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+	minUpper = get_config_entry_int("minUpper");
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+	minLower = get_config_entry_int("minLower");
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+	minDigit = get_config_entry_int("minDigit");
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+	minPunct = get_config_entry_int("minPunct");
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 	/** The password must have at least minQuality strength points with one
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 	 * point for the first occurrance of a lower, upper, digit and
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@@ -232,8 +314,6 @@
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 	for ( i = 0; i < nLen; i++ ) {
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-		if ( nQuality >= minQuality ) break;
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-
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 		if ( islower (pPasswd[i]) ) {
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 			minLower--;
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 			if ( !nLower && (minLower < 1)) {
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@@ -279,12 +359,23 @@
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 		}
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 	}
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-	if ( nQuality < minQuality ) {
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+	/*
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+	 * If you have a required field, then it should be required in the strength
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+	 * checks.
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+	 */
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+
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+	if (
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+		(minLower > 0 ) ||
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+		(minUpper > 0 ) ||
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+		(minDigit > 0 ) ||
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+		(minPunct > 0 ) ||
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+		(nQuality < minQuality)
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+		) {
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 		mem_len = realloc_error_message(&szErrStr, mem_len,
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-				strlen(PASSWORD_QUALITY_SZ) +
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-				strlen(pEntry->e_name.bv_val) + 2);
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+						strlen(PASSWORD_QUALITY_SZ) +
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+						strlen(pEntry->e_name.bv_val) + 2);
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 		sprintf (szErrStr, PASSWORD_QUALITY_SZ, pEntry->e_name.bv_val,
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-				nQuality, minQuality);
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+			 nQuality, minQuality);
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 		goto fail;
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 	}
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@@ -306,7 +397,7 @@
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 		for ( j = 0; j < 3; j++ ) {
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 			snprintf (filename, FILENAME_MAXLEN - 1, "%s.%s", \
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-					CRACKLIB_DICTPATH, ext[j]);
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+				  CRACKLIB_DICTPATH, ext[j]);
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 			if (( fp = fopen ( filename, "r")) == NULL ) {
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@@ -326,9 +417,9 @@
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 			r = (char *) FascistCheck (pPasswd, CRACKLIB_DICTPATH);
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 			if ( r != NULL ) {
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 				mem_len = realloc_error_message(&szErrStr, mem_len,
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-						strlen(BAD_PASSWORD_SZ) +
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-						strlen(pEntry->e_name.bv_val) +
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-						strlen(r));
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+								strlen(BAD_PASSWORD_SZ) +
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+								strlen(pEntry->e_name.bv_val) +
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+								strlen(r));
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 				sprintf (szErrStr, BAD_PASSWORD_SZ, pEntry->e_name.bv_val, r);
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 				goto fail;
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 			}
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@@ -342,15 +433,15 @@
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 	}
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 #endif
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-
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+	dealloc_config_entries();
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 	*ppErrStr = strdup ("");
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 	ber_memfree(szErrStr);
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 	return (LDAP_SUCCESS);
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 fail:
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+	dealloc_config_entries();
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 	*ppErrStr = strdup (szErrStr);
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 	ber_memfree(szErrStr);
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 	return (EXIT_FAILURE);
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 }
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-