struct io_conn;
-#ifdef DEBUG
-extern bool io_plan_for_other;
-extern bool (*io_debug)(struct io_conn *conn);
-#define io_plan_other() ((io_plan_for_other = true))
-#else
-#define io_plan_other() (void)0
-#endif
-
-struct io_state_read {
- char *buf;
- size_t len;
-};
-
-struct io_state_write {
- const char *buf;
- size_t len;
-};
-
-struct io_state_readpart {
- char *buf;
- size_t *lenp;
-};
-
-struct io_state_writepart {
- const char *buf;
- size_t *lenp;
-};
-
/**
* struct io_plan - returned from a setup function.
*
void *next_arg;
union {
- struct io_state_read read;
- struct io_state_write write;
- struct io_state_readpart readpart;
- struct io_state_writepart writepart;
+ struct {
+ char *buf;
+ size_t len;
+ } read;
+ struct {
+ const char *buf;
+ size_t len;
+ } write;
+ struct {
+ char *buf;
+ size_t *lenp;
+ } readpart;
+ struct {
+ const char *buf;
+ size_t *lenp;
+ } writepart;
+ struct {
+ void *p;
+ size_t len;
+ } ptr_len;
+ struct {
+ void *p1;
+ void *p2;
+ } ptr_ptr;
+ struct {
+ size_t len1;
+ size_t len2;
+ } len_len;
} u;
};
+#ifdef DEBUG
+extern bool io_plan_for_other;
+extern bool (*io_debug)(struct io_conn *conn);
+#define io_plan_other() ((io_plan_for_other = true))
+void io_plan_debug(struct io_plan *plan);
+#else
+#define io_plan_other() (void)0
+static inline void io_plan_debug(struct io_plan *plan) { }
+#endif
+
/**
* io_new_conn - create a new connection.
* @fd: the file descriptor.
--- /dev/null
+#include <ccan/io/io.h>
+/* Include the C files directly. */
+#include <ccan/io/poll.c>
+#include <ccan/io/io.c>
+#include <ccan/tap/tap.h>
+#include <sys/wait.h>
+#include <stdio.h>
+
+#ifndef PORT
+#define PORT "65017"
+#endif
+
+struct packet {
+ int state;
+ size_t len;
+ void *contents;
+};
+
+static void finish_ok(struct io_conn *conn, struct packet *pkt)
+{
+ ok1(pkt->state == 3);
+ pkt->state++;
+ io_break(pkt, io_idle());
+}
+
+static bool do_read_packet(int fd, struct io_plan *plan)
+{
+ struct packet *pkt = plan->u.ptr_len.p;
+ char *dest;
+ ssize_t ret;
+ size_t off, totlen;
+
+ /* Reading len? */
+ if (plan->u.ptr_len.len < sizeof(size_t)) {
+ ok1(pkt->state == 1);
+ pkt->state++;
+ dest = (char *)&pkt->len;
+ off = plan->u.ptr_len.len;
+ totlen = sizeof(pkt->len);
+ } else {
+ ok1(pkt->state == 2);
+ pkt->state++;
+ if (pkt->len == 0)
+ return true;
+ if (!pkt->contents && !(pkt->contents = malloc(pkt->len)))
+ goto fail;
+ else {
+ dest = pkt->contents;
+ off = plan->u.ptr_len.len - sizeof(pkt->len);
+ totlen = pkt->len;
+ }
+ }
+
+ ret = read(fd, dest + off, totlen - off);
+ if (ret <= 0)
+ goto fail;
+
+ plan->u.ptr_len.len += ret;
+
+ /* Finished? */
+ return (plan->u.ptr_len.len >= sizeof(pkt->len)
+ && plan->u.ptr_len.len == pkt->len + sizeof(pkt->len));
+
+fail:
+ free(pkt->contents);
+ /* Override next function to close us. */
+ plan->next = io_close;
+ return true;
+}
+
+static struct io_plan io_read_packet(struct packet *pkt,
+ struct io_plan (*cb)(struct io_conn *, void *),
+ void *arg)
+{
+ struct io_plan plan;
+
+ assert(cb);
+ pkt->contents = NULL;
+ plan.u.ptr_len.p = pkt;
+ plan.u.ptr_len.len = 0;
+ plan.io = do_read_packet;
+ plan.next = cb;
+ plan.next_arg = arg;
+ plan.pollflag = POLLIN;
+
+ io_plan_debug(&plan);
+ return plan;
+}
+
+static void init_conn(int fd, struct packet *pkt)
+{
+ ok1(pkt->state == 0);
+ pkt->state++;
+
+ if (!io_new_conn(fd, io_read_packet(pkt, io_close, pkt), finish_ok, pkt))
+ abort();
+}
+
+static int make_listen_fd(const char *port, struct addrinfo **info)
+{
+ int fd, on = 1;
+ struct addrinfo *addrinfo, hints;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_flags = AI_PASSIVE;
+ hints.ai_protocol = 0;
+
+ if (getaddrinfo(NULL, port, &hints, &addrinfo) != 0)
+ return -1;
+
+ fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+ addrinfo->ai_protocol);
+ if (fd < 0)
+ return -1;
+
+ setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+ if (bind(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0) {
+ close(fd);
+ return -1;
+ }
+ if (listen(fd, 1) != 0) {
+ close(fd);
+ return -1;
+ }
+ *info = addrinfo;
+ return fd;
+}
+
+int main(void)
+{
+ struct packet *pkt = malloc(sizeof(*pkt));
+ struct addrinfo *addrinfo;
+ struct io_listener *l;
+ int fd, status;
+
+ /* This is how many tests you plan to run */
+ plan_tests(13);
+ pkt->state = 0;
+ fd = make_listen_fd(PORT, &addrinfo);
+ ok1(fd >= 0);
+ l = io_new_listener(fd, init_conn, pkt);
+ ok1(l);
+ fflush(stdout);
+ if (!fork()) {
+ struct {
+ size_t len;
+ char data[8];
+ } data;
+
+ io_close_listener(l);
+ fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+ addrinfo->ai_protocol);
+ if (fd < 0)
+ exit(1);
+ if (connect(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0)
+ exit(2);
+ signal(SIGPIPE, SIG_IGN);
+
+ data.len = sizeof(data.data);
+ memcpy(data.data, "hithere!", sizeof(data.data));
+ if (write(fd, &data, sizeof(data)) != sizeof(data))
+ exit(3);
+
+ close(fd);
+ freeaddrinfo(addrinfo);
+ free(pkt);
+ exit(0);
+ }
+ freeaddrinfo(addrinfo);
+ ok1(io_loop() == pkt);
+ ok1(pkt->state == 4);
+ ok1(pkt->len == 8);
+ ok1(memcmp(pkt->contents, "hithere!", 8) == 0);
+ free(pkt->contents);
+ free(pkt);
+ io_close_listener(l);
+
+ ok1(wait(&status));
+ ok1(WIFEXITED(status));
+ ok1(WEXITSTATUS(status) == 0);
+
+ /* This exits depending on whether all tests passed */
+ return exit_status();
+}
projects / ccan / commitdiff