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#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <err.h>
#include "dpi.h"
#include "io.h"
static void check_auth() {
char buf[30];
int rc;
char key[4], local_key[4];
char keys[128];
char *home;
ssize_t sz;
rc = read_all(STDIN_FILENO, buf, 29);
if (rc < 0) err(1, "read auth");
buf[30] = '\0';
rc = sscanf(buf, "<cmd='auth' msg='%4x' '>", key);
if (rc < 0) err(1, "auth: %.*s", 29, buf);
if (rc < 1) errx(1, "auth: %.*s", 29, buf);
home = getenv("HOME");
if (!home) home = ".";
sz = read_file(keys, sizeof(keys), "%s/.dillo/dpid_comm_keys", home);
if (sz < 0) err(1, "read dillo comm keys");
rc = sscanf(keys, "%*d %4x' '>", local_key);
if (rc < 0) err(1, "comm key: %.*s", sz, keys);
if (rc < 1) errx(1, "comm key: %.*s", sz, keys);
if (memcmp(key, local_key, 4)) errx(1, "wrong dillo key");
}
static void get_url(char *url_buf, size_t url_len) {
char buf[21];
size_t len;
int rc;
int i;
rc = read_all(STDIN_FILENO, buf, sizeof(buf));
if (rc < 0) err(1, "read open_url");
if (strncmp(buf, "<cmd='open_url' url='", 21)) {
err(1, "bad open_url cmd: %.*s", sizeof(buf), buf);
}
len = url_len;
rc = read_some(STDIN_FILENO, url_buf, &len);
if (rc < 0) err(1, "read url");
for (i = 0; i < len-1; i++) {
if (url_buf[i] == '\'' && url_buf[i+1] == ' ') break;
}
if (i > len-3 || strncmp(url_buf + i, "' '>", 4)) {
err(1, "bad url end: %.*s", len, url_buf);
}
url_buf[i] = '\0';
}
void dpi_read_request(char *url_buf, size_t url_len) {
check_auth();
get_url(url_buf, url_len);
}
void dpi_send_status(const char *status) {
int rc = printf("<cmd='send_status_msg' msg='%s' '>", status);
if (rc < 0) err(1, "send_status_msg");
}
void dpi_send_header(const char *url, const char *content_type) {
int rc;
if (!url) url = "";
rc = printf("<cmd='start_send_page' url='%s' '>"
"Content-Type: %s\n\n", url, content_type);
if (rc < 0) err(1, "start_send_page");
}
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