From 9c21d3312ff12f6d3f56424875ddf13b0c165952 Mon Sep 17 00:00:00 2001
From: Stef Walter <stef@thewalter.net>
Date: Wed, 29 Jan 2025 06:06:53 +0100
Subject: Fix up the build

This copies the last version of the 1.10 clamsmtp common/
files into this project. They used to be shared with the proxsmtp
project but that project has since diverged.
---
 common/stringx.c | 174 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 174 insertions(+)
 create mode 100644 common/stringx.c

(limited to 'common/stringx.c')

diff --git a/common/stringx.c b/common/stringx.c
new file mode 100644
index 0000000..27bf06b
--- /dev/null
+++ b/common/stringx.c
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2004, Stefan Walter
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met:
+ * 
+ *     * Redistributions of source code must retain the above 
+ *       copyright notice, this list of conditions and the 
+ *       following disclaimer.
+ *     * 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.
+ *     * The names of contributors to this software may not be 
+ *       used to endorse or promote products derived from this 
+ *       software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+ * "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 
+ * COPYRIGHT OWNER OR CONTRIBUTORS 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.
+ * 
+ *
+ * CONTRIBUTORS
+ *  Stef Walter <stef@memberwebs.com>
+ *
+ */ 
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <syslog.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <strings.h>
+
+#include "usuals.h"
+#include "compat.h"
+#include "stringx.h"
+
+/* ----------------------------------------------------------------------------------
+ *  Parsing
+ */
+
+int is_first_word(const char* line, const char* word, int len)
+{
+    ASSERT(line);
+    ASSERT(word);
+    ASSERT(len > 0);
+    
+    while(*line && isspace(*line))
+        line++;
+
+    if(strncasecmp(line, word, len) != 0)
+        return 0;
+
+    line += len;
+    return !*line || isspace(*line);
+}
+
+int check_first_word(const char* line, const char* word, int len, char* delims)
+{
+    const char* t;
+    int found = 0;
+    
+    ASSERT(line);
+    ASSERT(word);
+    ASSERT(len > 0);
+    
+    t = line;
+    
+    while(*t && strchr(delims, *t))
+        t++;
+
+    if(strncasecmp(t, word, len) != 0)
+        return 0;
+
+    t += len;
+    
+    while(*t && strchr(delims, *t))
+    {
+        found = 1;
+        t++;
+    }
+    
+    return (!*t || found) ? t - line : 0;
+}
+
+int is_last_word(const char* line, const char* word, int len)
+{
+    const char* t;
+    
+    ASSERT(line);
+    ASSERT(word);
+    ASSERT(len > 0);
+
+    t = line + strlen(line);
+    
+    while(t > line && isspace(*(t - 1)))
+        --t;
+    
+    if(t - len < line)
+        return 0;
+        
+    return strncasecmp(t - len, word, len) == 0;
+}
+
+int is_blank_line(const char* line)
+{
+    /* Small optimization */
+    if(!*line)
+        return 1;
+    
+    while(*line && isspace(*line))
+        line++;
+        
+    return *line == 0;
+}
+
+char* trim_start(const char* data)
+{
+    while(*data && isspace(*data))
+        ++data;
+    return (char*)data;
+}
+
+char* trim_end(char* data)
+{
+    char* t = data + strlen(data);
+  
+    while(t > data && isspace(*(t - 1)))
+    {
+        t--;
+        *t = 0;
+    }
+  
+    return data;
+}
+
+char* trim_space(char* data)
+{
+    data = (char*)trim_start(data);
+    return trim_end(data);
+}
+
+/* String to bool helper function */
+int strtob(const char* str)
+{
+    if(strcasecmp(str, "0") == 0 ||
+       strcasecmp(str, "no") == 0 ||
+       strcasecmp(str, "false") == 0 ||
+       strcasecmp(str, "f") == 0 ||
+       strcasecmp(str, "off") == 0)
+        return 0;
+    
+    if(strcasecmp(str, "1") == 0 ||
+       strcasecmp(str, "yes") == 0 ||
+       strcasecmp(str, "true") == 0 ||
+       strcasecmp(str, "t") == 0 ||
+       strcasecmp(str, "on") == 0)
+        return 1;
+
+    return -1;  
+}
-- 
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