refactor conns.[ch], put conn_s into child struct

this allows to access the conn member from the main thread handling
the childs, plus simplifies the code.

src/child.c

@@ -33,25 +33,26 @@
 #include "conf.h"
 #include "sblist.h"
 #include "loop.h"
+#include "conns.h"
 #include <pthread.h>
 
 static vector_t listen_fds;
 
 struct client {
         union sockaddr_union addr;
-        int fd;
 };
 
 struct child {
 	pthread_t thread;
 	struct client client;
+	struct conn_s conn;
 	volatile int done;
 };
 
 static void* child_thread(void* data)
 {
 	struct child *c = data;
-	handle_connection (c->client.fd, &c->client.addr);
+	handle_connection (&c->conn, &c->client.addr);
 	c->done = 1;
 	return NULL;
 }
@@ -185,7 +186,7 @@ void child_main_loop (void)
                         continue;
                 }
 
-                child = safemalloc(sizeof(struct child));
+                child = safecalloc(1, sizeof(struct child));
                 if (!child) {
 oom:
                         close(connfd);
@@ -202,7 +203,9 @@ oom:
                         goto oom;
                 }
 
-                child->client.fd = connfd;
+                conn_struct_init(&child->conn);
+                child->conn.client_fd = connfd;
+
                 memcpy(&child->client.addr, &cliaddr_storage, sizeof(cliaddr_storage));
 
                 attrp = 0;
@@ -233,7 +236,7 @@ void child_kill_children (int sig)
 		if (!c->done) {
 			/* interrupt blocking operations.
 			   this should cause the threads to shutdown orderly. */
-			close(c->client.fd);
+			close(c->conn.client_fd);
 		}
 	}
 	usleep(16);

src/conns.c

@@ -30,13 +30,20 @@
 #include "log.h"
 #include "stats.h"
 
-struct conn_s *initialize_conn (int client_fd, const char *ipaddr,
+void conn_struct_init(struct conn_s *connptr) {
+        connptr->error_number = -1;
+        connptr->client_fd = -1;
+        connptr->server_fd = -1;
+        /* There is _no_ content length initially */
+        connptr->content_length.server = connptr->content_length.client = -1;
+}
+
+int conn_init_contents (struct conn_s *connptr, const char *ipaddr,
                                 const char *sock_ipaddr)
 {
-        struct conn_s *connptr;
         struct buffer_s *cbuffer, *sbuffer;
 
-        assert (client_fd >= 0);
+        assert (connptr->client_fd >= 0);
 
         /*
          * Allocate the memory for all the internal components
@@ -47,47 +54,16 @@ struct conn_s *initialize_conn (int client_fd, const char *ipaddr,
         if (!cbuffer || !sbuffer)
                 goto error_exit;
 
-        /*
-         * Allocate the space for the conn_s structure itself.
-         */
-        connptr = (struct conn_s *) safemalloc (sizeof (struct conn_s));
-        if (!connptr)
-                goto error_exit;
-
-        connptr->client_fd = client_fd;
-        connptr->server_fd = -1;
-
         connptr->cbuffer = cbuffer;
         connptr->sbuffer = sbuffer;
 
-        connptr->request_line = NULL;
-
-        /* These store any error strings */
-        connptr->error_variables = NULL;
-        connptr->error_string = NULL;
-        connptr->error_number = -1;
-
-        connptr->connect_method = FALSE;
-        connptr->show_stats = FALSE;
-
-        connptr->protocol.major = connptr->protocol.minor = 0;
-
-        /* There is _no_ content length initially */
-        connptr->content_length.server = connptr->content_length.client = -1;
-
         connptr->server_ip_addr = (sock_ipaddr ?
                                    safestrdup (sock_ipaddr) : NULL);
         connptr->client_ip_addr = safestrdup (ipaddr);
 
-        connptr->upstream_proxy = NULL;
-
         update_stats (STAT_OPEN);
 
-#ifdef REVERSE_SUPPORT
-        connptr->reversepath = NULL;
-#endif
-
-        return connptr;
+        return 1;
 
 error_exit:
         /*
@@ -98,10 +74,10 @@ error_exit:
         if (sbuffer)
                 delete_buffer (sbuffer);
 
-        return NULL;
+        return 0;
 }
 
-void destroy_conn (struct conn_s *connptr)
+void conn_destroy_contents (struct conn_s *connptr)
 {
         assert (connptr != NULL);
 
@@ -109,10 +85,12 @@ void destroy_conn (struct conn_s *connptr)
                 if (close (connptr->client_fd) < 0)
                         log_message (LOG_INFO, "Client (%d) close message: %s",
                                      connptr->client_fd, strerror (errno));
+        connptr->client_fd = -1;
         if (connptr->server_fd != -1)
                 if (close (connptr->server_fd) < 0)
                         log_message (LOG_INFO, "Server (%d) close message: %s",
                                      connptr->server_fd, strerror (errno));
+        connptr->server_fd = -1;
 
         if (connptr->cbuffer)
                 delete_buffer (connptr->cbuffer);
@@ -146,7 +124,5 @@ void destroy_conn (struct conn_s *connptr)
                 safefree (connptr->reversepath);
 #endif
 
-        safefree (connptr);
-
         update_stats (STAT_CLOSE);
 }

src/conns.h

@@ -87,11 +87,13 @@ struct conn_s {
         struct upstream *upstream_proxy;
 };
 
-/*
- * Functions for the creation and destruction of a connection structure.
- */
-extern struct conn_s *initialize_conn (int client_fd, const char *ipaddr,
+/* expects pointer to zero-initialized struct, set up struct
+   with default values for initial use */
+extern void conn_struct_init(struct conn_s *connptr);
+
+/* second stage initializiation, sets up buffers and connection details */
+extern int conn_init_contents (struct conn_s *connptr, const char *ipaddr,
                                        const char *sock_ipaddr);
-extern void destroy_conn (struct conn_s *connptr);
+extern void conn_destroy_contents (struct conn_s *connptr);
 
 #endif

src/reqs.c

@@ -1509,16 +1509,15 @@ static void handle_connection_failure(struct conn_s *connptr, int got_headers)
  * tinyproxy code, which was confusing, redundant. Hail progress.
  * 	- rjkaes
  */
-void handle_connection (int fd, union sockaddr_union* addr)
+void handle_connection (struct conn_s *connptr, union sockaddr_union* addr)
 {
 
 #define HC_FAIL() \
         do {handle_connection_failure(connptr, got_headers); goto done;} \
         while(0)
 
-        int got_headers = 0;
+        int got_headers = 0, fd = connptr->client_fd;
         ssize_t i;
-        struct conn_s *connptr;
         struct request_s *request = NULL;
         struct timeval tv;
         orderedmap hashofheaders = NULL;
@@ -1536,9 +1535,8 @@ void handle_connection (int fd, union sockaddr_union* addr)
                      "Connect (file descriptor %d): %s",
                      fd, peer_ipaddr, sock_ipaddr);
 
-        connptr = initialize_conn (fd, peer_ipaddr,
-                                   config->bindsame ? sock_ipaddr : NULL);
-        if (!connptr) {
+        if(!conn_init_contents (connptr, peer_ipaddr,
+                                   config->bindsame ? sock_ipaddr : NULL)) {
                 close (fd);
                 return;
         }
@@ -1739,7 +1737,7 @@ e401:
 done:
         free_request_struct (request);
         orderedmap_destroy (hashofheaders);
-        destroy_conn (connptr);
+        conn_destroy_contents (connptr);
         return;
 #undef HC_FAIL
 }

src/reqs.h

@@ -24,6 +24,7 @@
 
 #include "common.h"
 #include "sock.h"
+#include "conns.h"
 
 /*
  * Port constants for HTTP (80) and SSL (443)
@@ -44,6 +45,6 @@ struct request_s {
         char *path;
 };
 
-extern void handle_connection (int fd, union sockaddr_union* addr);
+extern void handle_connection (struct conn_s *, union sockaddr_union* addr);
 
 #endif