DKIM support and several cleanups for baseline C sanity.

This patch came from http://notes.sagredo.eu/node/92
icculus · Mar 23, 2017 · ada26bf · ada26bf
1 parent adae8a5
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Showing 81 changed files with 12,254 additions and 88 deletions.
diff --git a/MakeArgs.c b/MakeArgs.c
@@ -0,0 +1,144 @@
+/*
+ * $Log: MakeArgs.c,v $
+ * Revision 2.8  2007-12-21 14:35:42+05:30  Cprogrammer
+ * included env.h to prevent compiler warning
+ *
+ * Revision 2.7  2007-12-20 12:45:28+05:30  Cprogrammer
+ * expand environment variables with '$' sign
+ *
+ * Revision 2.6  2005-08-23 17:31:28+05:30  Cprogrammer
+ * removed sccsid variable
+ *
+ * Revision 2.5  2005-04-02 19:06:02+05:30  Cprogrammer
+ * djb version
+ *
+ * Revision 2.4  2005-03-30 22:52:47+05:30  Cprogrammer
+ * BUG - Incorrect free
+ *
+ * Revision 2.3  2004-07-12 22:47:58+05:30  Cprogrammer
+ * bug fix. Free all allocated members
+ *
+ * Revision 2.2  2002-12-21 18:21:09+05:30  Cprogrammer
+ * added functionality of escaping text via quotes
+ *
+ * Revision 2.1  2002-08-13 20:35:44+05:30  Cprogrammer
+ * addition spaces were not getting skipped
+ *
+ * Revision 1.2  2002-03-03 17:23:05+05:30  Cprogrammer
+ * replaced strcpy with scopy
+ *
+ * Revision 1.1  2001-12-13 01:46:09+05:30  Cprogrammer
+ * Initial revision
+ *
+ */
+#include "alloc.h"
+#include "str.h"
+#include "stralloc.h"
+#include "env.h"
+#include <ctype.h>
+
+#define isEscape(ch) ((ch) == '"' || (ch) == '\'')
+
+/*
+ * function to expand a string into command line
+ * arguments. To free memory allocated by this
+ * function the following should be done
+ *
+ * free(argv);
+ *
+ */
+char          **
+MakeArgs(char *cmmd)
+{
+	char           *ptr, *marker;
+	char          **argv;
+	int             argc, idx;
+	static stralloc sptr = { 0 };
+
+	for (ptr = cmmd;*ptr && isspace((int) *ptr);ptr++);
+	idx = str_len(ptr);
+	if (!stralloc_copys(&sptr, ptr))
+		return((char **) 0);
+	if (!stralloc_0(&sptr))
+		return((char **) 0);
+	/*-
+	 * Get the number of arguments by counting
+	 * white spaces. Allow escape via the double
+	 * quotes character at the first word
+	 */
+	for (argc = 0, ptr = sptr.s;*ptr;)
+	{
+		for (;*ptr && isspace((int) *ptr);ptr++);
+		if (!*ptr)
+			break;
+		argc++;
+		marker = ptr;
+		/*- Move till you hit the next white space */
+		for (;*ptr && !isspace((int) *ptr);ptr++)
+		{
+			/*-
+			 * 1. If escape char is encounted skip till you
+			 *    hit the terminating escape char
+			 * 2. If terminating escape char is missing, come
+			 *    back to the start escape char
+			 */
+			if (ptr == marker && isEscape(*ptr))
+			{
+				for (ptr++;*ptr && !isEscape(*ptr);ptr++);
+				if (!*ptr)
+					ptr = marker;
+			}
+		} /*- for(;*ptr && !isspace((int) *ptr);ptr++) */
+	} /*- for (argc = 0, ptr = sptr.s;*ptr;) */
+	/*
+	 * Allocate memory to store the arguments
+	 * Do not bother extra bytes occupied by
+	 * white space characters.
+	 */
+	if (!(argv = (char **) alloc((argc + 1) * sizeof(char *))))
+		return ((char **) 0);
+	for (idx = 0, ptr = sptr.s;*ptr;)
+	{
+		for (;*ptr && isspace((int) *ptr);ptr++)
+			*ptr = 0;
+		if (!*ptr)
+			break;
+		if (*ptr == '$')
+			argv[idx++] = env_get(ptr + 1);
+		else
+			argv[idx++] = ptr;
+		marker = ptr;
+		for (;*ptr && !isspace((int) *ptr);ptr++)
+		{
+			if (ptr == marker && isEscape(*ptr))
+			{
+				for (ptr++;*ptr && !isEscape(*ptr);ptr++);
+				if (!*ptr)
+					ptr = marker;
+				else /*- Remove the quotes */
+				{
+					argv[idx - 1] += 1;
+					*ptr = 0;
+				}
+			}
+		}
+	} /*- for (idx = 0, ptr = sptr.s;*ptr;) */
+	argv[idx++] = (char *) 0;
+	return (argv);
+}
+
+void
+FreeMakeArgs(char **argv)
+{
+	alloc_free(argv);
+	return;
+}
+
+void
+getversion_MakeArgs__c()
+{
+	static char     *x = "$Id: MakeArgs.c,v 2.8 2007-12-21 14:35:42+05:30 Cprogrammer Stab mbhangui $";
+	x++;
+	x--;
+	return;
+}