Const-ify the world (or at least a good part of it)

This patch adds 'const' tags to a number of Asterisk APIs where they are appropriate (where the API already demanded that the function argument not be modified, but the compiler was not informed of that fact). The list includes:

- CLI command handlers
- CLI command handler arguments
- AGI command handlers
- AGI command handler arguments
- Dialplan application handler arguments
- Speech engine API function arguments

In addition, various file-scope and function-scope constant arrays got 'const' and/or 'static' qualifiers where they were missing.

Review: https://reviewboard.asterisk.org/r/251/



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@196072 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 4 insertions, 4 deletions

diff --git a/main/utils.c b/main/utils.c
index e724160f4..59a29ce5a 100644
--- a/main/utils.c
+++ b/main/utils.c
@@ -227,7 +227,7 @@ struct hostent *ast_gethostbyname(const char *host, struct ast_hostent *hp)
 }
 
 /*! \brief Produce 32 char MD5 hash of value. */
-void ast_md5_hash(char *output, char *input)
+void ast_md5_hash(char *output, const char *input)
 {
 	struct MD5Context md5;
 	unsigned char digest[16];
@@ -235,7 +235,7 @@ void ast_md5_hash(char *output, char *input)
 	int x;
 
 	MD5Init(&md5);
-	MD5Update(&md5, (unsigned char *)input, strlen(input));
+	MD5Update(&md5, (const unsigned char *) input, strlen(input));
 	MD5Final(digest, &md5);
 	ptr = output;
 	for (x = 0; x < 16; x++)
@@ -243,7 +243,7 @@ void ast_md5_hash(char *output, char *input)
 }
 
 /*! \brief Produce 40 char SHA1 hash of value. */
-void ast_sha1_hash(char *output, char *input)
+void ast_sha1_hash(char *output, const char *input)
 {
 	struct SHA1Context sha;
 	char *ptr;
@@ -1446,7 +1446,7 @@ char *ast_process_quotes_and_slashes(char *start, char find, char replace_with)
 	return dataPut;
 }
 
-void ast_join(char *s, size_t len, char * const w[])
+void ast_join(char *s, size_t len, const char * const w[])
 {
 	int x, ofs = 0;
 	const char *src;