Refactor PseudoNode into a library.

PseudoNode has been re-factored into a library:
- The PseudoNode API is provided in pseudo_node.h
- The PseudoNode library implementation is in pseudo_node.c
- A basic "reference" PseudoNode implementation is in main.c

The API is hopefully reasonably basic:
- A PseudoNode can be created with the PN_create() call.
- Various events are reported via "callbacks".  Events include:
  * New block
  * New transaction
  * New INV message
  * (low level) any kind of message
  * log and warning messages.
- Messages can be changed/manipulated by the application, e.g. it is
  possible to block or insert inv messages.
- The API is incomplete (PN_destroy is NYI).

The aim is to make it easy to insert arbtiray code into cryptocurrecy
networks (i.e. no long "sync" times).  There are lots of applications
for this...

In addition, several bugs were fixed & improvements made, e.g.
- Now uses BIP34 to find the height.
- TXs are cleaned based on block inclusion or a timeout.a
- Bug fixes...

Author: basil00

Makefile

@@ -1,14 +1,17 @@
 CC = clang
 STRIP = strip
-OBJS = pseudo_node.o sha256.o
-CFLAGS = -std=gnu99 -DLINUX -O2 -Wall -Wno-unused-value
-CLIBS = -lpthread -ldl
+OBJS = pseudo_node.o
+CFLAGS = -std=gnu99 -DLINUX -O2 -Wall -Wno-unused-value -fpic
+CLIBS = -lpthread -ldl -Wl,-R.
 
-pseudonode: $(OBJS)
-	$(CC) $(CFLAGS) -o pseudonode $(OBJS) $(CLIBS)
+pseudonode: libpseudonode.so main.o
+	$(CC) $(CFLAGS) -o pseudonode main.o $(CLIBS) -L. libpseudonode.so
 	$(STRIP) pseudonode
 	cp pseudonode pseudonode.linux
 
+libpseudonode.so: $(OBJS)
+	$(CC) -shared -o libpseudonode.so $(OBJS)
+
 clean:
-	rm -f $(OBJS) pseduonode
+	rm -f $(OBJS) main.o libpseudonode.so pseduonode
 

Makefile.windows

@@ -1,15 +1,18 @@
 CC = x86_64-w64-mingw32-gcc
 STRIP = x86_64-w64-mingw32-strip
-OBJS = pseudo_node.o sha256.o
-CFLAGS = -std=gnu99 -DWINDOWS -O2 -Wno-unused-value -mthreads
+OBJS = pseudo_node.o
+CFLAGS = -std=gnu99 -DWINDOWS -O2 -Wno-unused-value -mthreads -mconsole -fpic
 CLIBS = -lws2_32 -lkernel32
 
-PseudoNode.exe: $(OBJS)
-	$(CC) $(CFLAGS) -o PseudoNode.exe $(OBJS) $(CLIBS)
+PseudoNode.exe: PseudoNode.dll main.o
+	$(CC) $(CFLAGS) -o PseudoNode.exe main.o $(OBJS) $(CLIBS)
 	$(STRIP) PseudoNode.exe
 
+PseudoNode.dll: $(OBJS)
+	$(CC) $(CFLAGS) --shared -o PseudoNode.dll $(OBJS) $(CLIBS)
+
 pseudo_node.o: pseudo_node.c windows.c
 
 clean:
-	rm -f $(OBJS) node
+	rm -f $(OBJS) main.o PseudoNode.dll PseudoNode.exe
 

VERSION

@@ -1 +1 @@
-0.5.0
+0.6.0

linux.c

@@ -42,21 +42,13 @@
 #define MAP_ANONYMOUS   MAP_ANON
 #endif
 
-static bool use_color = false;
-
-#define color_clear(stream)         if (use_color) fputs("\33[0m", stream)
-#define color_error(stream)         if (use_color) fputs("\33[31m", stream)
-#define color_warning(stream)       if (use_color) fputs("\33[33m", stream)
-#define color_log(stream)           if (use_color) fputs("\33[32m", stream)
+#define get_error()                 strerror(errno)
 
 static bool system_init(void)
 {
-    use_color = isatty(1);          // stdout
     return true;
 }
 
-#define get_error()                 strerror(errno)
-
 static bool rand_init(uint64_t *r)
 {
     FILE *stream = fopen("/dev/urandom", "r");
@@ -134,9 +126,7 @@ static bool event_wait(event *e)
     ts.tv_sec = tv.tv_sec;
     ts.tv_nsec = 1000 * tv.tv_usec;
 #endif
-    ts.tv_nsec += rand64() % 1000000000;
-    ts.tv_sec += 1 + ts.tv_nsec / 1000000000;
-    ts.tv_nsec = ts.tv_nsec % 1000000000;
+    ts.tv_sec += 2;
     mutex_lock(&e->mutex);
     while (!e->set)
     {
@@ -224,12 +214,12 @@ static sock socket_accept(sock s, struct in6_addr *addr)
     return s1;
 }
 
-static bool socket_connect(sock s, struct in6_addr addr)
+static bool socket_connect(sock s, struct in6_addr addr, uint16_t port)
 {
     struct sockaddr_in6 sockaddr;
     memset(&sockaddr, 0, sizeof(sockaddr));
     sockaddr.sin6_family = AF_INET6;
-    sockaddr.sin6_port = PORT;
+    sockaddr.sin6_port = port;
     sockaddr.sin6_addr = addr;
     int flags = fcntl(s, F_GETFL, 0);
     if (flags < 0 || fcntl(s, F_SETFL, (flags | O_NONBLOCK)) != 0)
@@ -240,8 +230,8 @@ static bool socket_connect(sock s, struct in6_addr addr)
     if (fcntl(s, F_SETFL, flags) != 0)
         return false;
     struct timeval tv;
-    tv.tv_sec = 5;
-    tv.tv_usec = rand64() % 1000000;
+    tv.tv_sec = 6;
+    tv.tv_usec = 0;
     fd_set fds;
     FD_ZERO(&fds);
     FD_SET(s, &fds);
@@ -255,8 +245,8 @@ static ssize_t socket_recv(sock s, void *buf, size_t len, bool *timeout)
 {
     *timeout = false;
     struct timeval tv;
-    tv.tv_sec = 1;
-    tv.tv_usec = rand64() % 1000000;
+    tv.tv_sec = 2;
+    tv.tv_usec = 0;
     fd_set fds;
     FD_ZERO(&fds);
     FD_SET(s, &fds);
@@ -290,33 +280,3 @@ static void socket_close(sock s, bool err)
     close(s);
 }
 
-static void server(void)
-{
-    daemon(1, 0);
-
-    struct passwd *entry = getpwnam("nobody");
-    if (entry == NULL)
-        return;
-    setgid(entry->pw_gid);
-    setuid(entry->pw_uid);
-}
-
-static void *system_alloc(size_t size)
-{
-    size_t pagesize = sysconf(_SC_PAGESIZE);
-    size = (((size-1) / pagesize) + 1) * pagesize;
-    void *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE,
-        MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0);
-    if (ptr == MAP_FAILED)
-        return NULL;
-    return ptr;
-}
-
-static void system_free(size_t size, void *ptr)
-{
-    size_t pagesize = sysconf(_SC_PAGESIZE);
-    size = (((size-1) / pagesize) + 1) * pagesize;
-    int res = munmap(ptr, size);
-    assert(res == 0);
-}
-