Constify 'hostname' and 'service' to various resolver functions.

6 files changed, 17 insertions, 17 deletions

diff --git a/lib/hostares.c b/lib/hostares.c
index f08ad5859..af1513ca2 100644
--- a/lib/hostares.c
+++ b/lib/hostares.c
@@ -259,7 +259,7 @@ CURLcode Curl_wait_for_resolv(struct connectdata *conn,
  * Curl_freeaddrinfo(), nothing else.
  */
 Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
-                                char *hostname,
+                                const char *hostname,
                                 int port,
                                 int *waitp)
 {
@@ -314,7 +314,7 @@ struct namebuf {
  * The input parameters ARE NOT checked for validity but they are expected
  * to have been checked already when this is called.
  */
-Curl_addrinfo *Curl_ip2addr(in_addr_t num, char *hostname, int port)
+Curl_addrinfo *Curl_ip2addr(in_addr_t num, const char *hostname, int port)
 {
   Curl_addrinfo *ai;
   struct hostent *h;
diff --git a/lib/hostip.c b/lib/hostip.c
index 21d2297fa..7146bb2bf 100644
--- a/lib/hostip.c
+++ b/lib/hostip.c
@@ -196,7 +196,7 @@ const char *Curl_printable_address(const Curl_addrinfo *ip,
  * the DNS caching.
  */
 static char *
-create_hostcache_id(char *server, int port)
+create_hostcache_id(const char *server, int port)
 {
   /* create and return the new allocated entry */
   return aprintf("%s:%d", server, port);
@@ -327,7 +327,7 @@ sigjmp_buf curl_jmpenv;
 struct Curl_dns_entry *
 Curl_cache_addr(struct SessionHandle *data,
                 Curl_addrinfo *addr,
-                char *hostname,
+                const char *hostname,
                 int port)
 {
   char *entry_id;
@@ -344,7 +344,7 @@ Curl_cache_addr(struct SessionHandle *data,
   entry_len = strlen(entry_id);
 
   /* Create a new cache entry */
-  dns = (struct Curl_dns_entry *) malloc(sizeof(struct Curl_dns_entry));
+  dns = (struct Curl_dns_entry *) calloc(sizeof(struct Curl_dns_entry), 1);
   if (!dns) {
     free(entry_id);
     return NULL;
@@ -394,7 +394,7 @@ Curl_cache_addr(struct SessionHandle *data,
  */
 
 int Curl_resolv(struct connectdata *conn,
-                char *hostname,
+                const char *hostname,
                 int port,
                 struct Curl_dns_entry **entry)
 {
diff --git a/lib/hostip.h b/lib/hostip.h
index 2205aac08..bd3b28dc5 100644
--- a/lib/hostip.h
+++ b/lib/hostip.h
@@ -135,7 +135,7 @@ struct Curl_dns_entry {
 #define CURLRESOLV_ERROR    -1
 #define CURLRESOLV_RESOLVED  0
 #define CURLRESOLV_PENDING   1
-int Curl_resolv(struct connectdata *conn, char *hostname,
+int Curl_resolv(struct connectdata *conn, const char *hostname,
                 int port, struct Curl_dns_entry **dnsentry);
 
 /*
@@ -151,7 +151,7 @@ bool Curl_ipvalid(struct SessionHandle *data);
  * of arguments
  */
 Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
-                                char *hostname,
+                                const char *hostname,
                                 int port,
                                 int *waitp);
 
@@ -192,7 +192,7 @@ int Curl_num_addresses (const Curl_addrinfo *addr);
 #ifdef CURLDEBUG
 void curl_dofreeaddrinfo(struct addrinfo *freethis,
                          int line, const char *source);
-int curl_dogetaddrinfo(char *hostname, char *service,
+int curl_dogetaddrinfo(const char *hostname, const char *service,
                        struct addrinfo *hints,
                        struct addrinfo **result,
                        int line, const char *source);
@@ -220,7 +220,7 @@ CURLcode Curl_addrinfo6_callback(void *arg,
 
 /* [ipv4 only] Creates a Curl_addrinfo struct from a numerical-only IP
    address */
-Curl_addrinfo *Curl_ip2addr(in_addr_t num, char *hostname, int port);
+Curl_addrinfo *Curl_ip2addr(in_addr_t num, const char *hostname, int port);
 
 /* [ipv4 only] Curl_he2ai() converts a struct hostent to a Curl_addrinfo chain
    and returns it */
@@ -247,7 +247,7 @@ const char *Curl_printable_address(const Curl_addrinfo *ip,
  */
 struct Curl_dns_entry *
 Curl_cache_addr(struct SessionHandle *data, Curl_addrinfo *addr,
-                char *hostname, int port);
+                const char *hostname, int port);
 
 /*
  * Curl_destroy_thread_data() cleans up async resolver data.
diff --git a/lib/hostip4.c b/lib/hostip4.c
index e55eb38d8..627b0783a 100644
--- a/lib/hostip4.c
+++ b/lib/hostip4.c
@@ -139,7 +139,7 @@ struct namebuf {
  * The input parameters ARE NOT checked for validity but they are expected
  * to have been checked already when this is called.
  */
-Curl_addrinfo *Curl_ip2addr(in_addr_t num, char *hostname, int port)
+Curl_addrinfo *Curl_ip2addr(in_addr_t num, const char *hostname, int port)
 {
   Curl_addrinfo *ai;
   struct hostent *h;
@@ -185,7 +185,7 @@ Curl_addrinfo *Curl_ip2addr(in_addr_t num, char *hostname, int port)
  *
  */
 Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
-                                char *hostname,
+                                const char *hostname,
                                 int port,
                                 int *waitp)
 {
diff --git a/lib/hostip6.c b/lib/hostip6.c
index b013ee902..3d80166c1 100644
--- a/lib/hostip6.c
+++ b/lib/hostip6.c
@@ -116,7 +116,7 @@ Curl_addrinfo *Curl_addrinfo_copy(void *source, int port)
  * family otherwise present in memdebug.c. I put these ones here since they
  * require a bunch of structs I didn't wanna include in memdebug.c
  */
-int curl_dogetaddrinfo(char *hostname, char *service,
+int curl_dogetaddrinfo(const char *hostname, const char *service,
                        struct addrinfo *hints,
                        struct addrinfo **result,
                        int line, const char *source)
@@ -222,7 +222,7 @@ static void dump_addrinfo(struct connectdata *conn, const struct addrinfo *ai)
  * Curl_freeaddrinfo(), nothing else.
  */
 Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
-                                char *hostname,
+                                const char *hostname,
                                 int port,
                                 int *waitp)
 {
diff --git a/lib/hostthre.c b/lib/hostthre.c
index 8162794e6..65c09372e 100644
--- a/lib/hostthre.c
+++ b/lib/hostthre.c
@@ -726,7 +726,7 @@ int Curl_resolv_getsock(struct connectdata *conn,
  * Curl_getaddrinfo() - for Windows threading without ENABLE_IPV6.
  */
 Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
-                                char *hostname,
+                                const char *hostname,
                                 int port,
                                 int *waitp)
 {
@@ -766,7 +766,7 @@ Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
  * Curl_getaddrinfo() - for Windows threading IPv6 enabled
  */
 Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
-                                char *hostname,
+                                const char *hostname,
                                 int port,
                                 int *waitp)
 {