Bug 5440 - Add STAT() dialplan function

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7575 65c4cc65-6c06-0410-ace0-fbb531ad65f3

funcs/func_env.c

@@ -23,6 +23,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 
 #include "asterisk.h"
 
@@ -59,6 +60,51 @@ static void builtin_function_env_write(struct ast_channel *chan, char *cmd, char
 	}
 }
 
+static char *builtin_function_stat_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
+{
+	char *action;
+	struct stat s;
+
+	ast_copy_string(buf, "0", len);
+	if (!data) {
+		ast_log(LOG_ERROR, "Out of memory\n");
+		return buf;
+	}
+
+	action = strsep(&data, "|");
+	if (stat(data, &s)) {
+		return buf;
+	} else {
+		switch (*action) {
+		case 'e':
+			ast_copy_string(buf, "1", len);
+			break;
+		case 's':
+			snprintf(buf, len, "%d", (unsigned int)s.st_size);
+			break;
+		case 'f':
+			snprintf(buf, len, "%d", S_ISREG(s.st_mode) ? 1 : 0);
+			break;
+		case 'd':
+			snprintf(buf, len, "%d", S_ISDIR(s.st_mode) ? 1 : 0);
+			break;
+		case 'M':
+			snprintf(buf, len, "%d", (int)s.st_mtime);
+			break;
+		case 'A':
+			snprintf(buf, len, "%d", (int)s.st_mtime);
+			break;
+		case 'C':
+			snprintf(buf, len, "%d", (int)s.st_ctime);
+			break;
+		case 'm':
+			snprintf(buf, len, "%o", (int)s.st_mode);
+			break;
+		}
+	}
+	return buf;
+}
+
 #ifndef BUILTIN_FUNC
 static
 #endif
@@ -69,3 +115,24 @@ struct ast_custom_function env_function = {
 	.read = builtin_function_env_read,
 	.write = builtin_function_env_write,
 };
+
+#ifndef BUILTIN_FUNC
+static
+#endif
+struct ast_custom_function stat_function = {
+	.name = "STAT",
+	.synopsis = "Does a check on the specified file",
+	.syntax = "STAT(<flag>,<filename>)",
+	.read = builtin_function_stat_read,
+	.desc =
+"flag may be one of the following:\n"
+"  d - Checks if the file is a directory\n"
+"  e - Checks if the file exists\n"
+"  f - Checks if the file is a regular file\n"
+"  m - Returns the file mode (in octal)\n"
+"  s - Returns the size (in bytes) of the file\n"
+"  A - Returns the epoch at which the file was last accessed\n"
+"  C - Returns the epoch at which the inode was last changed\n"
+"  M - Returns the epoch at which the file was last modified\n",
+};
+