minor: fix take const in tls_param, atobv, atoiv

include/optparse.h

@@ -26,51 +26,51 @@
 /// TLS settings.
 typedef struct tls_opts {
     /// Client certificate to present to the server.
-    const char *tls_cert;
+    char const *tls_cert;
     /// Private key corresponding to the certificate.
     /// If tls_cert is set but tls_key is not, tls_cert is used.
-    const char *tls_key;
+    char const *tls_key;
     /// Verify server certificate using this CA bundle. If set to "*", then TLS
     /// is enabled but no cert verification is performed.
-    const char *tls_ca_cert;
+    char const *tls_ca_cert;
     /// Colon-delimited list of acceptable cipher suites.
     /// Names depend on the library used, for example:
     /// ECDH-ECDSA-AES128-GCM-SHA256:DHE-RSA-AES128-SHA256 (OpenSSL)
     /// For OpenSSL the list can be obtained by running "openssl ciphers".
     /// If NULL, a reasonable default is used.
-    const char *tls_cipher_suites;
+    char const *tls_cipher_suites;
     /// Server name verification. If tls_ca_cert is set and the certificate has
     /// passed verification, its subject will be verified against this string.
     /// By default (if tls_server_name is NULL) hostname part of the address will
     /// be used. Wildcard matching is supported. A special value of "*" disables
     /// name verification.
-    const char *tls_server_name;
+    char const *tls_server_name;
     /// PSK identity is a NUL-terminated string.
     /// Note: Default list of cipher suites does not include PSK suites, if you
     /// want to use PSK you will need to set tls_cipher_suites as well.
-    const char *tls_psk_identity;
+    char const *tls_psk_identity;
     /// PSK key hex string, must be either 16 or 32 bytes (32 or 64 hex digits)
     /// for AES-128 or AES-256 respectively.
-    const char *tls_psk_key;
+    char const *tls_psk_key;
 } tls_opts_t;
 
 /// Parse a TLS option.
 ///
 /// @sa tls_opts_t
 /// @return 0 if the option was valid, error code otherwise
-int tls_param(tls_opts_t *tls_opts, char *key, char *val);
+int tls_param(tls_opts_t *tls_opts, char const *key, char const *val);
 
 /// Convert string to bool with fallback default.
 /// Parses "true", "yes", "on", "enable" (not case-sensitive) to 1, atoi() otherwise.
-int atobv(char *arg, int def);
+int atobv(char const *arg, int def);
 
 /// Convert string to int with fallback default.
-int atoiv(char *arg, int def);
+int atoiv(char const *arg, int def);
 
 /// Get the next colon or comma separated arg, NULL otherwise.
 /// Returns string including comma if a comma is found first,
 /// otherwise string after colon if found, NULL otherwise.
-char *arg_param(char *arg);
+char *arg_param(char const *arg);
 
 /// Convert a string with optional leading equals char to a double.
 ///
@@ -79,7 +79,7 @@ char *arg_param(char *arg);
 /// @param str character string to parse
 /// @param error_hint prepended to error output
 /// @return parsed number value
-double arg_float(const char *str, const char *error_hint);
+double arg_float(char const *str, char const *error_hint);
 
 /// Parse param string to host and port.
 /// E.g. ":514", "localhost", "[::1]", "127.0.0.1:514", "[::1]:514",
@@ -96,7 +96,7 @@ char *hostport_param(char *param, char **host, char **port);
 /// @param str character string to parse
 /// @param error_hint prepended to error output
 /// @return parsed number value
-uint32_t atouint32_metric(const char *str, const char *error_hint);
+uint32_t atouint32_metric(char const *str, char const *error_hint);
 
 /// Convert a string to an integer, uses strtod() and accepts
 /// time suffixes of 'd', 'h', 'm', and 's' (also 'D', 'H', 'M', and 'S'),
@@ -107,7 +107,7 @@ uint32_t atouint32_metric(const char *str, const char *error_hint);
 /// @param str character string to parse
 /// @param error_hint prepended to error output
 /// @return parsed number value
-int atoi_time(const char *str, const char *error_hint);
+int atoi_time(char const *str, char const *error_hint);
 
 /// Similar to strsep.
 ///

src/optparse.c

@@ -15,7 +15,7 @@
 #include <limits.h>
 #include <string.h>
 
-int tls_param(tls_opts_t *tls_opts, char *key, char *val)
+int tls_param(tls_opts_t *tls_opts, char const *key, char const *val)
 {
     if (!tls_opts || !key || !*key)
         return 1;
@@ -38,7 +38,7 @@ int tls_param(tls_opts_t *tls_opts, char *key, char *val)
     return 0;
 }
 
-int atobv(char *arg, int def)
+int atobv(char const *arg, int def)
 {
     if (!arg)
         return def;
@@ -47,7 +47,7 @@ int atobv(char *arg, int def)
     return atoi(arg);
 }
 
-int atoiv(char *arg, int def)
+int atoiv(char const *arg, int def)
 {
     if (!arg)
         return def;
@@ -58,7 +58,7 @@ int atoiv(char *arg, int def)
     return val;
 }
 
-char *arg_param(char *arg)
+char *arg_param(char const *arg)
 {
     if (!arg)
         return NULL;
@@ -72,7 +72,7 @@ char *arg_param(char *arg)
         return p;
 }
 
-double arg_float(const char *str, const char *error_hint)
+double arg_float(char const *str, char const *error_hint)
 {
     if (!str) {
         fprintf(stderr, "%smissing number argument\n", error_hint);
@@ -133,7 +133,7 @@ char *hostport_param(char *param, char **host, char **port)
     return NULL;
 }
 
-uint32_t atouint32_metric(const char *str, const char *error_hint)
+uint32_t atouint32_metric(char const *str, char const *error_hint)
 {
     if (!str) {
         fprintf(stderr, "%smissing number argument\n", error_hint);
@@ -195,7 +195,7 @@ uint32_t atouint32_metric(const char *str, const char *error_hint)
     return (uint32_t)val;
 }
 
-int atoi_time(const char *str, const char *error_hint)
+int atoi_time(char const *str, char const *error_hint)
 {
     if (!str) {
         fprintf(stderr, "%smissing time argument\n", error_hint);