refactor: c/ -> usr/, compiled program blobs out of the source tree

Userland sources live in usr/ (fits the Unix theme better than 'c').
SDCC output .bin blobs land in build/usr/ with the other build artifacts
instead of littering the source dir; programs.asm INCBINs them from there.
Byte-identical ROM.

1 files changed, 43 insertions, 0 deletions

diff --git a/usr/wget.c b/usr/wget.c
new file mode 100644
index 0000000..aafbae0
--- /dev/null
+++ b/usr/wget.c
@@ -0,0 +1,43 @@
+#include "resolve.h"
+/* wget HOST|IP - fetch http://HOST/ over the kernel TCP socket layer and print
+   it. Resolves a hostname via DNS first (resolve.h), then connect()/send()/
+   recv() over TCP - all the SLIP/IP/UDP/TCP lives in the kernel. */
+
+static unsigned char buf[220];        /* first + large so namebuf/dst land arg-safe */
+static unsigned char namebuf[64];
+static unsigned char dst[4];
+
+void main(void) {
+    char *arg, *r;
+    unsigned char s, n, i;
+    arg = getargs();
+    if (!arg || !*arg) { puts("usage: wget HOST|IP"); nl(); sexit(1); }
+    for (i = 0; arg[i] && i < 63; i++) namebuf[i] = (unsigned char)arg[i];
+    namebuf[i] = 0;
+
+    if (!resolve((char *)namebuf, dst)) {
+        puts("wget: cannot resolve "); puts((char *)namebuf); nl(); sexit(1);
+    }
+    puts("connecting "); for (i = 0; i < 4; i++) { putu(dst[i]); if (i < 3) putc('.'); } nl();
+
+    s = net_socket(SOCK_TCP);
+    if (s == 0xFF) { puts("wget: no socket"); nl(); sexit(1); }
+    net_bind(s, 40001);
+    if (net_connect(s, dst, 80) == 0xFF) { puts("wget: connect failed"); nl(); net_close(s); sexit(1); }
+
+    /* GET / HTTP/1.0 with the requested host as the Host header */
+    r = "GET / HTTP/1.0\r\nHost: ";
+    n = 0;
+    while (r[n]) { buf[n] = (unsigned char)r[n]; n++; }
+    for (i = 0; namebuf[i]; i++) buf[n++] = namebuf[i];
+    buf[n++] = '\r'; buf[n++] = '\n'; buf[n++] = '\r'; buf[n++] = '\n';
+    net_send(s, buf, n);
+
+    for (;;) {
+        n = net_recv(s, buf, (unsigned char)sizeof(buf));
+        if (n == 0xFF) { nl(); puts("[timeout]"); nl(); break; }
+        if (n == 0)    { nl(); puts("[eof]");     nl(); break; }
+        for (i = 0; i < n; i++) putc((char)buf[i]);
+    }
+    net_close(s);
+}