void ftp_got_user_info(struct connection *c, struct read_buffer *rb)
{
int g = get_ftp_response(c, rb, 0);
if (g == -1) { setcstate(c, S_FTP_ERROR); abort_connection(c); return; }
if (!g) { read_from_socket(c, c->sock1, rb, ftp_got_user_info); return; }
if (g >= 530 && g < 540) { setcstate(c, S_FTP_LOGIN); retry_connection(c); return; }
if (g >= 400) { setcstate(c, S_FTP_UNAVAIL); retry_connection(c); return; }
if (g >= 200 && g < 300) {
if (ftp_options.fast_ftp) ftp_dummy_info(c, rb);
else ftp_send_retr_req(c, S_GETH);
} else {
if (ftp_options.fast_ftp) ftp_pass_info(c, rb);
else {
unsigned char *login;
unsigned char *u;
int logl = 0;
login = init_str();
add_to_str(&login, &logl, "PASS ");
if ((u = get_pass(c->url)) && *u) add_to_str(&login, &logl, u);
else add_to_str(&login, &logl, ftp_options.anon_pass);
if (u) mem_free(u);
add_to_str(&login, &logl, "\r\n");
write_to_socket(c, c->sock1, login, strlen(login), ftp_sent_passwd);
mem_free(login);
setcstate(c, S_LOGIN);
}
}
}
void dns_found(struct connection *c, int state)
{
int s;
struct conn_info *b = c->newconn;
if (state) {
setcstate(c, S_NO_DNS);
abort_connection(c);
return;
}
if ((s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) {
setcstate(c, get_error_from_errno(errno));
retry_connection(c);
return;
}
*b->sock = s;
fcntl(s, F_SETFL, O_NONBLOCK);
memset(&b->sa, 0, sizeof(struct sockaddr_in));
b->sa.sin_family = AF_INET;
b->sa.sin_addr.s_addr = b->addr;
b->sa.sin_port = htons(b->port);
if (connect(s, (struct sockaddr *)&b->sa, sizeof b->sa)) {
if (errno != EALREADY && errno != EINPROGRESS) {
#ifdef BEOS
if (errno == EWOULDBLOCK) errno = ETIMEDOUT;
#endif
setcstate(c, get_error_from_errno(errno));
retry_connection(c);
return;
}
set_handlers(s, NULL, (void(*)(void *))connected, (void(*)(void *))exception, c);
setcstate(c, S_CONN);
} else {
connected(c);
}
}
static void ftp_pass_info(struct connection *c, struct read_buffer *rb)
{
int g = get_ftp_response(c, rb, 0);
if (g == -1) {
setcstate(c, S_FTP_ERROR);
abort_connection(c);
return;
}
if (!g) {
read_from_socket(c, c->sock1, rb, ftp_pass_info);
setcstate(c, S_LOGIN);
return;
}
if (g >= 530 && g < 540) {
setcstate(c, S_FTP_LOGIN);
abort_connection(c);
return;
}
if (g >= 400) {
setcstate(c, S_FTP_UNAVAIL);
abort_connection(c);
return;
}
if (ftp_options.fast_ftp) ftp_retr_file(c, rb);
else ftp_send_retr_req(c, S_GETH);
}
void make_connection(struct connection *c, int port, int *sock, void (*func)(struct connection *))
{
int as;
unsigned char *host;
struct conn_info *b;
if (!(host = get_host_name(c->url))) {
setcstate(c, S_INTERNAL);
abort_connection(c);
return;
}
if (c->newconn)
internal("already making a connection");
b = mem_alloc(sizeof(struct conn_info));
b->func = func;
b->sock = sock;
b->port = port;
c->newconn = b;
log_data("\nCONNECTION: ", 13);
log_data(host, strlen(host));
log_data("\n", 1);
if (c->no_cache >= NC_RELOAD) as = find_host_no_cache(host, &b->addr, &c->dnsquery, (void(*)(void *, int))dns_found, c);
else as = find_host(host, &b->addr, &c->dnsquery, (void(*)(void *, int))dns_found, c);
mem_free(host);
if (as) setcstate(c, S_DNS);
}
void finger_get_response(struct connection *c, struct read_buffer *rb)
{
struct cache_entry *e;
int l;
set_timeout(c);
if (get_cache_entry(c->url, &e)) {
setcstate(c, S_OUT_OF_MEM);
abort_connection(c);
return;
}
c->cache = e;
if (rb->close == 2) {
setcstate(c, S_OK);
finger_end_request(c);
return;
}
l = rb->len;
if (c->from + l < 0) {
setcstate(c, S_LARGE_FILE);
abort_connection(c);
return;
}
c->received += l;
if (add_fragment(c->cache, c->from, rb->data, l) == 1) c->tries = 0;
c->from += l;
kill_buffer_data(rb, l);
read_from_socket(c, c->sock1, rb, finger_get_response);
setcstate(c, S_TRANS);
}
void ftp_got_info(struct connection *c, struct read_buffer *rb)
{
int g = get_ftp_response(c, rb, 0);
if (g == -1) { setcstate(c, S_FTP_ERROR); abort_connection(c); return; }
if (!g) { read_from_socket(c, c->sock1, rb, ftp_got_info); return; }
if (g >= 400) { setcstate(c, S_FTP_UNAVAIL); retry_connection(c); return; }
ftp_got_user_info(c, rb);
}
void read_select(struct connection *c)
{
struct read_buffer *rb;
int rd;
if (!(rb = c->buffer)) {
internal("read socket has no buffer");
setcstate(c, S_INTERNAL);
abort_connection(c);
return;
}
set_handlers(rb->sock, NULL, NULL, NULL, NULL);
if ((unsigned)rb->len > MAXINT - sizeof(struct read_buffer) - READ_SIZE) overalloc();
rb = mem_realloc(rb, sizeof(struct read_buffer) + rb->len + READ_SIZE);
c->buffer = rb;
#ifdef HAVE_SSL
if(c->ssl) {
if ((rd = SSL_read(c->ssl, rb->data + rb->len, READ_SIZE)) <= 0) {
int err;
if ((err = SSL_get_error(c->ssl, rd)) == SSL_ERROR_WANT_READ) {
read_from_socket(c, rb->sock, rb, rb->done);
return;
}
if (rb->close && !rd) {
rb->close = 2;
rb->done(c, rb);
return;
}
setcstate(c, rd ? (err == SSL_ERROR_SYSCALL ? get_error_from_errno(errno) : S_SSL_ERROR) : S_CANT_READ);
/*mem_free(rb);*/
if (!rd || err == SSL_ERROR_SYSCALL) retry_connection(c);
else abort_connection(c);
return;
}
} else
#endif
if ((rd = read(rb->sock, rb->data + rb->len, READ_SIZE)) <= 0) {
if (rb->close && !rd) {
rb->close = 2;
rb->done(c, rb);
return;
}
setcstate(c, rd ? get_error_from_errno(errno) : S_CANT_READ);
/*mem_free(rb);*/
retry_connection(c);
return;
}
log_data(rb->data + rb->len, rd);
rb->len += rd;
rb->done(c, rb);
}
void write_select(struct connection *c)
{
struct write_buffer *wb;
int wr;
if (!(wb = c->buffer)) {
internal("write socket has no buffer");
setcstate(c, S_INTERNAL);
abort_connection(c);
return;
}
set_timeout(c);
/*printf("ws: %d\n",wb->len-wb->pos);
for (wr = wb->pos; wr < wb->len; wr++) printf("%c", wb->data[wr]);
printf("-\n");*/
#ifdef HAVE_SSL
if(c->ssl) {
if ((wr = SSL_write(c->ssl, wb->data + wb->pos, wb->len - wb->pos)) <= 0) {
int err;
if ((err = SSL_get_error(c->ssl, wr)) != SSL_ERROR_WANT_WRITE) {
setcstate(c, wr ? (err == SSL_ERROR_SYSCALL ? get_error_from_errno(errno) : S_SSL_ERROR) : S_CANT_WRITE);
if (!wr || err == SSL_ERROR_SYSCALL) retry_connection(c);
else abort_connection(c);
return;
}
else return;
}
} else
#endif
if ((wr = write(wb->sock, wb->data + wb->pos, wb->len - wb->pos)) <= 0) {
#ifdef ATHEOS
/* Workaround for a bug in Syllable */
if (wr && errno == EAGAIN) {
return;
}
#endif
setcstate(c, wr ? get_error_from_errno(errno) : S_CANT_WRITE);
retry_connection(c);
return;
}
/*printf("wr: %d\n", wr);*/
if ((wb->pos += wr) == wb->len) {
void (*f)(struct connection *) = wb->done;
c->buffer = NULL;
set_handlers(wb->sock, NULL, NULL, NULL, NULL);
mem_free(wb);
f(c);
}
}
void ssl_want_read(struct connection *c)
{
struct conn_info *b = c->newconn;
set_timeout(c);
if (c->no_tsl) c->ssl->options |= SSL_OP_NO_TLSv1;
switch (SSL_get_error(c->ssl, SSL_connect(c->ssl))) {
case SSL_ERROR_NONE:
c->newconn = NULL;
b->func(c);
mem_free(b);
break;
case SSL_ERROR_WANT_READ:
set_handlers(*b->sock, (void(*)(void *))ssl_want_read, NULL, (void(*)(void *))exception, c);
break;
case SSL_ERROR_WANT_WRITE:
set_handlers(*b->sock, NULL, (void(*)(void *))ssl_want_read, (void(*)(void *))exception, c);
break;
default:
c->no_tsl++;
setcstate(c, S_SSL_ERROR);
retry_connection(c);
break;
}
}
void ftp_dummy_info(struct connection *c, struct read_buffer *rb)
{
int g = get_ftp_response(c, rb, 0);
if (g == -1) { setcstate(c, S_FTP_ERROR); abort_connection(c); return; }
if (!g) { read_from_socket(c, c->sock1, rb, ftp_dummy_info); return; }
ftp_retr_file(c, rb);
}
static void ftp_login(struct connection *c)
{
unsigned char *login;
unsigned char *u;
int logl = 0;
set_timeout(c);
login = init_str();
add_to_str(&login, &logl, cast_uchar "USER ");
if ((u = get_user_name(c->url)) && *u) add_to_str(&login, &logl, u);
else add_to_str(&login, &logl, cast_uchar "anonymous");
if (u) mem_free(u);
if (ftp_options.fast_ftp) {
struct ftp_connection_info *fi;
add_to_str(&login, &logl, cast_uchar "\r\nPASS ");
if ((u = get_pass(c->url)) && *u) add_to_str(&login, &logl, u);
else add_to_str(&login, &logl, ftp_options.anon_pass);
if (u) mem_free(u);
add_to_str(&login, &logl, cast_uchar "\r\n");
if (!(fi = add_file_cmd_to_str(c))) {
mem_free(login);
return;
}
add_to_str(&login, &logl, fi->cmdbuf);
} else add_to_str(&login, &logl, cast_uchar "\r\n");
write_to_socket(c, c->sock1, login, strlen(cast_const_char login), ftp_logged);
mem_free(login);
setcstate(c, S_SENT);
}
int get_pasv_socket(struct connection *c, int cc, int *sock, unsigned char *port)
{
int s;
struct sockaddr_in sa;
struct sockaddr_in sb;
socklen_t len = sizeof(sa);
memset(&sa, 0, sizeof sa);
memset(&sb, 0, sizeof sb);
if (getsockname(cc, (struct sockaddr *)&sa, &len)) {
e:
setcstate(c, get_error_from_errno(errno));
retry_connection(c);
return -1;
}
if ((s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) goto e;
*sock = s;
fcntl(s, F_SETFL, O_NONBLOCK);
memcpy(&sb, &sa, sizeof(struct sockaddr_in));
sb.sin_port = 0;
if (bind(s, (struct sockaddr *)&sb, sizeof sb)) goto e;
len = sizeof(sa);
if (getsockname(s, (struct sockaddr *)&sa, &len)) goto e;
if (listen(s, 1)) goto e;
memcpy(port, &sa.sin_addr.s_addr, 4);
memcpy(port + 4, &sa.sin_port, 2);
return 0;
}
void connected(struct connection *c)
{
struct conn_info *b = c->newconn;
int err = 0;
socklen_t len = sizeof(int);
if (getsockopt(*b->sock, SOL_SOCKET, SO_ERROR, (void *)&err, &len))
if (!(err = errno)) {
err = -(S_STATE);
goto bla;
}
if (err >= 10000) err -= 10000; /* Why does EMX return so large values? */
if (err > 0) {
bla:
setcstate(c, get_error_from_errno(err));
retry_connection(c);
return;
}
set_timeout(c);
#ifdef HAVE_SSL
if (c->ssl) {
c->ssl = getSSL();
SSL_set_fd(c->ssl, *b->sock);
if (c->no_tsl) c->ssl->options |= SSL_OP_NO_TLSv1;
switch (SSL_get_error(c->ssl, SSL_connect(c->ssl))) {
case SSL_ERROR_WANT_READ:
setcstate(c, S_SSL_NEG);
set_handlers(*b->sock, (void(*)(void *))ssl_want_read, NULL, (void(*)(void *))exception, c);
return;
case SSL_ERROR_WANT_WRITE:
setcstate(c, S_SSL_NEG);
set_handlers(*b->sock, NULL, (void(*)(void *))ssl_want_read, (void(*)(void *))exception, c);
return;
case SSL_ERROR_NONE:
break;
default:
c->no_tsl++;
setcstate(c, S_SSL_ERROR);
retry_connection(c);
return;
}
}
#endif
c->newconn = NULL;
b->func(c);
mem_free(b);
}
static void ftp_get_banner(struct connection *c)
{
struct read_buffer *rb;
set_timeout(c);
setcstate(c, S_SENT);
if (!(rb = alloc_read_buffer(c))) return;
read_from_socket(c, c->sock1, rb, ftp_got_banner);
}
void finger_func(struct connection *c)
{
int p;
if ((p = get_port(c->url)) == -1) {
setcstate(c, S_INTERNAL);
abort_connection(c);
return;
}
c->from = 0;
make_connection(c, p, &c->sock1, finger_send_request);
}
static void finger_end_request(struct connection *c, int state)
{
if (state == S__OK) {
if (c->cache) {
truncate_entry(c->cache, c->from, 1);
c->cache->incomplete = 0;
}
}
setcstate(c, state);
abort_connection(c);
}
void ftp_func(struct connection *c)
{
/*setcstate(c, S_CONN);*/
/*set_timeout(c);*/
if (get_keepalive_socket(c)) {
int p;
if ((p = get_port(c->url)) == -1) {
setcstate(c, S_INTERNAL);
abort_connection(c);
return;
}
make_connection(c, p, &c->sock1, ftp_options.fast_ftp ? ftp_login : ftp_get_banner);
} else ftp_send_retr_req(c, S_SENT);
}
void http_func(struct connection *c)
{
/*setcstate(c, S_CONN);*/
/*set_timeout(c);*/
if (get_keepalive_socket(c)) {
int p;
if ((p = get_port(c->url)) == -1) {
setcstate(c, S_INTERNAL);
abort_connection(c);
return;
}
make_connection(c, p, &c->sock1, http_send_header);
} else http_send_header(c);
}
static void finger_get_response(struct connection *c, struct read_buffer *rb)
{
int l;
int a;
set_timeout(c);
if (!c->cache) {
if (get_cache_entry(c->url, &c->cache)) {
setcstate(c, S_OUT_OF_MEM);
abort_connection(c);
return;
}
c->cache->refcount--;
}
if (rb->close == 2) {
finger_end_request(c, S__OK);
return;
}
l = rb->len;
if ((off_t)(0UL + c->from + l) < 0) {
setcstate(c, S_LARGE_FILE);
abort_connection(c);
return;
}
c->received += l;
a = add_fragment(c->cache, c->from, rb->data, l);
if (a < 0) {
setcstate(c, a);
abort_connection(c);
return;
}
if (a == 1) c->tries = 0;
c->from += l;
kill_buffer_data(rb, l);
read_from_socket(c, c->sock1, rb, finger_get_response);
setcstate(c, S_TRANS);
}
void finger_send_request(struct connection *c)
{
unsigned char *req = init_str();
int rl = 0;
unsigned char *user;
add_to_str(&req, &rl, "/W");
if ((user = get_user_name(c->url))) {
add_to_str(&req, &rl, " ");
add_to_str(&req, &rl, user);
mem_free(user);
}
add_to_str(&req, &rl, "\r\n");
write_to_socket(c, c->sock1, req, rl, finger_sent_request);
mem_free(req);
setcstate(c, S_SENT);
}
void ftp_send_retr_req(struct connection *c, int state)
{
struct ftp_connection_info *fi;
unsigned char *login;
int logl = 0;
set_timeout(c);
login = init_str();
if (!c->info && !(fi = add_file_cmd_to_str(c))) {
mem_free(login);
return;
} else fi = c->info;
if (ftp_options.fast_ftp) a:add_to_str(&login, &logl, fi->cmdbuf);
else {
unsigned char *nl = strchr(fi->cmdbuf, '\n');
if (!nl) goto a;
nl++;
add_bytes_to_str(&login, &logl, fi->cmdbuf, nl - fi->cmdbuf);
memmove(fi->cmdbuf, nl, strlen(nl) + 1);
}
write_to_socket(c, c->sock1, login, strlen(login), ftp_retr_1);
mem_free(login);
setcstate(c, state);
}
void http_send_header(struct connection *c)
{
static unsigned char *accept_charset = NULL;
struct http_connection_info *info;
int http10 = http_bugs.http10;
struct cache_entry *e = NULL;
unsigned char *hdr;
unsigned char *h, *u;
int l = 0;
int la;
unsigned char *post;
unsigned char *host;
find_in_cache(c->url, &c->cache);
host = upcase(c->url[0]) != 'P' ? c->url : get_url_data(c->url);
set_timeout(c);
info = mem_calloc(sizeof(struct http_connection_info));
c->info = info;
if ((h = get_host_name(host))) {
info->bl_flags = get_blacklist_flags(h);
mem_free(h);
}
if (info->bl_flags & BL_HTTP10) http10 = 1;
info->http10 = http10;
post = strchr(host, POST_CHAR);
if (post) post++;
hdr = init_str();
if (!post) add_to_str(&hdr, &l, "GET ");
else {
add_to_str(&hdr, &l, "POST ");
c->unrestartable = 2;
}
if (upcase(c->url[0]) != 'P') add_to_str(&hdr, &l, "/");
if (!(u = get_url_data(c->url))) {
mem_free(hdr);
setcstate(c, S_BAD_URL);
http_end_request(c, 0);
return;
}
if (post && post < u) {
mem_free(hdr);
setcstate(c, S_BAD_URL);
http_end_request(c, 0);
return;
}
add_url_to_str(&hdr, &l, u);
if (!http10) add_to_str(&hdr, &l, " HTTP/1.1\r\n");
else add_to_str(&hdr, &l, " HTTP/1.0\r\n");
if ((h = get_host_name(host))) {
add_to_str(&hdr, &l, "Host: ");
add_to_str(&hdr, &l, h);
mem_free(h);
if ((h = get_port_str(host))) {
add_to_str(&hdr, &l, ":");
add_to_str(&hdr, &l, h);
mem_free(h);
}
add_to_str(&hdr, &l, "\r\n");
}
add_to_str(&hdr, &l, "User-Agent: ");
if (!(*http_bugs.fake_useragent)) {
add_to_str(&hdr, &l, "Links (" VERSION_STRING "; ");
add_to_str(&hdr, &l, system_name);
if (!F && !list_empty(terminals)) {
struct terminal *t = terminals.prev;
if (!t->spec->braille) {
add_to_str(&hdr, &l, "; ");
add_num_to_str(&hdr, &l, t->x);
add_to_str(&hdr, &l, "x");
add_num_to_str(&hdr, &l, t->y);
} else {
add_to_str(&hdr, &l, "; braille");
}
}
#ifdef G
if (F && drv) {
add_to_str(&hdr, &l, "; ");
add_to_str(&hdr, &l, drv->name);
}
#endif
add_to_str(&hdr, &l, ")\r\n");
}
else {
add_to_str(&hdr, &l, http_bugs.fake_useragent);
add_to_str(&hdr, &l, "\r\n");
}
switch (http_bugs.referer)
{
case REFERER_FAKE:
add_to_str(&hdr, &l, "Referer: ");
add_to_str(&hdr, &l, http_bugs.fake_referer);
add_to_str(&hdr, &l, "\r\n");
break;
case REFERER_SAME_URL:
add_to_str(&hdr, &l, "Referer: ");
add_url_to_str(&hdr, &l, host);
add_to_str(&hdr, &l, "\r\n");
break;
case REFERER_REAL_SAME_SERVER:
{
unsigned char *h, *j;
int brk = 1;
if ((h = get_host_name(host))) {
if ((j = get_host_name(c->prev_url))) {
if (!strcasecmp(h, j)) brk = 0;
mem_free(j);
}
mem_free(h);
}
if (brk) break;
/* fall through */
}
case REFERER_REAL:
{
unsigned char *ref;
unsigned char *user, *ins;
int ulen;
if (!(c->prev_url)) break; /* no referrer */
ref = stracpy(c->prev_url);
if (!parse_url(ref, NULL, &user, &ulen, NULL, NULL, &ins, NULL, NULL, NULL, NULL, NULL, NULL) && ulen && ins) {
memmove(user, ins, strlen(ins) + 1);
}
add_to_str(&hdr, &l, "Referer: ");
add_url_to_str(&hdr, &l, ref);
add_to_str(&hdr, &l, "\r\n");
mem_free(ref);
}
break;
}
add_to_str(&hdr, &l, "Accept: */*\r\n");
#if defined(HAVE_ZLIB) || defined(HAVE_BZIP2)
if (!http_bugs.no_compression && !(info->bl_flags & BL_NO_COMPRESSION)) {
int q = strlen(c->url);
if (q >= 2 && !strcasecmp(c->url + q - 2, ".Z")) goto skip_compress;
if (q >= 3 && !strcasecmp(c->url + q - 3, ".gz")) goto skip_compress;
if (q >= 4 && !strcasecmp(c->url + q - 4, ".bz2")) goto skip_compress;
add_to_str(&hdr, &l, "Accept-Encoding: ");
#if defined(HAVE_ZLIB)
add_to_str(&hdr, &l, "gzip, deflate, ");
#endif
#if defined(HAVE_BZIP2)
add_to_str(&hdr, &l, "bzip2, ");
#endif
hdr[l-2] = '\r';
hdr[l-1] = '\n';
skip_compress:
;
}
#endif
if (!(accept_charset)) {
int i;
unsigned char *cs, *ac;
int aclen = 0;
ac = init_str();
for (i = 0; (cs = get_cp_mime_name(i)); i++) {
if (aclen) add_to_str(&ac, &aclen, ", ");
else add_to_str(&ac, &aclen, "Accept-Charset: ");
add_to_str(&ac, &aclen, cs);
}
if (aclen) add_to_str(&ac, &aclen, "\r\n");
if ((accept_charset = malloc(strlen(ac) + 1))) strcpy(accept_charset, ac);
else accept_charset = "";
mem_free(ac);
}
if (!(info->bl_flags & BL_NO_CHARSET) && !http_bugs.no_accept_charset) add_to_str(&hdr, &l, accept_charset);
if (!(info->bl_flags & BL_NO_ACCEPT_LANGUAGE)) {
add_to_str(&hdr, &l, "Accept-Language: ");
la = l;
add_to_str(&hdr, &l, _(TEXT(T__ACCEPT_LANGUAGE), NULL));
add_to_str(&hdr, &l, ", ");
if (!strstr(hdr + la, "en,") && !strstr(hdr + la, "en;")) add_to_str(&hdr, &l, "en;q=0.2, ");
add_to_str(&hdr, &l, "*;q=0.1\r\n");
}
if (!http10) {
if (upcase(c->url[0]) != 'P') add_to_str(&hdr, &l, "Connection: ");
else add_to_str(&hdr, &l, "Proxy-Connection: ");
if (!post || !http_bugs.bug_post_no_keepalive) add_to_str(&hdr, &l, "Keep-Alive\r\n");
else add_to_str(&hdr, &l, "close\r\n");
}
if ((e = c->cache)) {
int code, vers;
if (get_http_code(e->head, &code, &vers) || code >= 400) goto skip_ifmod_and_range;
if (!e->incomplete && e->head && c->no_cache <= NC_IF_MOD) {
unsigned char *m;
if (e->last_modified) m = stracpy(e->last_modified);
else if ((m = parse_http_header(e->head, "Date", NULL))) ;
else if ((m = parse_http_header(e->head, "Expires", NULL))) ;
else goto skip_ifmod;
add_to_str(&hdr, &l, "If-Modified-Since: ");
add_to_str(&hdr, &l, m);
add_to_str(&hdr, &l, "\r\n");
mem_free(m);
}
skip_ifmod:
;
}
if (c->from && (c->est_length == -1 || c->from < c->est_length) && c->no_cache < NC_IF_MOD && !(info->bl_flags & BL_NO_RANGE)) {
/* If the cached entity is compressed and we turned off compression,
request the whole file */
if ((info->bl_flags & BL_NO_COMPRESSION || http_bugs.no_compression) && e) {
unsigned char *d;
if ((d = parse_http_header(e->head, "Transfer-Encoding", NULL))) {
mem_free(d);
goto skip_range;
}
}
add_to_str(&hdr, &l, "Range: bytes=");
add_num_to_str(&hdr, &l, c->from);
add_to_str(&hdr, &l, "-\r\n");
skip_range:
;
}
skip_ifmod_and_range:
if (c->no_cache >= NC_PR_NO_CACHE) add_to_str(&hdr, &l, "Pragma: no-cache\r\nCache-Control: no-cache\r\n");
if ((h = get_auth_string(c->url))) {
add_to_str(&hdr, &l, h);
mem_free(h);
}
if (post) {
unsigned char *pd = strchr(post, '\n');
if (pd) {
add_to_str(&hdr, &l, "Content-Type: ");
add_bytes_to_str(&hdr, &l, post, pd - post);
add_to_str(&hdr, &l, "\r\n");
post = pd + 1;
}
add_to_str(&hdr, &l, "Content-Length: ");
add_num_to_str(&hdr, &l, strlen(post) / 2);
add_to_str(&hdr, &l, "\r\n");
}
send_cookies(&hdr, &l, host);
add_to_str(&hdr, &l, "\r\n");
if (post) {
while (post[0] && post[1]) {
int h1, h2;
h1 = post[0] <= '9' ? (unsigned)post[0] - '0' : post[0] >= 'A' ? upcase(post[0]) - 'A' + 10 : 0;
if (h1 < 0 || h1 >= 16) h1 = 0;
h2 = post[1] <= '9' ? (unsigned)post[1] - '0' : post[1] >= 'A' ? upcase(post[1]) - 'A' + 10 : 0;
if (h2 < 0 || h2 >= 16) h2 = 0;
add_chr_to_str(&hdr, &l, h1 * 16 + h2);
post += 2;
}
}
write_to_socket(c, c->sock1, hdr, l, http_get_header);
mem_free(hdr);
setcstate(c, S_SENT);
}
static struct ftp_connection_info *add_file_cmd_to_str(struct connection *c)
{
unsigned char *d = get_url_data(c->url);
unsigned char *de;
int del;
unsigned char port_string[50];
struct ftp_connection_info *inf, *inf2;
unsigned char *s;
int l;
if (!d) {
internal("get_url_data failed");
setcstate(c, S_INTERNAL);
abort_connection(c);
return NULL;
}
de = init_str(), del = 0;
add_conv_str(&de, &del, d, strlen(cast_const_char d), -2);
d = de;
inf = mem_alloc(sizeof(struct ftp_connection_info));
memset(inf, 0, sizeof(struct ftp_connection_info));
l = 0;
s = init_str();
inf->pasv = ftp_options.passive_ftp;
#ifdef LINKS_2
if (*c->socks_proxy) inf->pasv = 1;
if (ftp_options.eprt_epsv || is_ipv6(c->sock1)) inf->eprt_epsv = 1;
#endif
c->info = inf;
if (!inf->pasv) {
int ps;
#ifdef SUPPORT_IPV6
if (is_ipv6(c->sock1)) {
ps = get_pasv_socket_ipv6(c, c->sock1, &c->sock2, port_string);
if (ps) {
mem_free(d);
mem_free(s);
return NULL;
}
} else
#endif
{
unsigned char pc[6];
ps = get_pasv_socket(c, c->sock1, &c->sock2, pc);
if (ps) {
mem_free(d);
mem_free(s);
return NULL;
}
if (inf->eprt_epsv)
sprintf(cast_char port_string, "|1|%d.%d.%d.%d|%d|", pc[0], pc[1], pc[2], pc[3], (pc[4] << 8) | pc[5]);
else
sprintf(cast_char port_string, "%d,%d,%d,%d,%d,%d", pc[0], pc[1], pc[2], pc[3], pc[4], pc[5]);
}
if (strlen(cast_const_char port_string) >= sizeof(port_string))
internal("buffer overflow in get_pasv_socket_ipv6: %d > %d", (int)strlen(cast_const_char port_string), (int)sizeof(port_string));
}
#ifdef HAVE_IPTOS
if (ftp_options.set_tos) {
int rx;
int on = IPTOS_THROUGHPUT;
EINTRLOOP(rx, setsockopt(c->sock2, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int)));
}
#endif
if (!(de = cast_uchar strchr(cast_const_char d, POST_CHAR))) de = d + strlen(cast_const_char d);
if (d == de || de[-1] == '/') {
inf->dir = 1;
inf->pending_commands = 4;
add_to_str(&s, &l, cast_uchar "TYPE A\r\n");
add_port_pasv(&s, &l, inf, port_string);
add_to_str(&s, &l, cast_uchar "CWD /");
add_bytes_to_str(&s, &l, d, de - d);
add_to_str(&s, &l, cast_uchar "\r\nLIST\r\n");
c->from = 0;
} else {
inf->dir = 0;
inf->pending_commands = 3;
add_to_str(&s, &l, cast_uchar "TYPE I\r\n");
add_port_pasv(&s, &l, inf, port_string);
if (c->from && c->no_cache < NC_IF_MOD) {
add_to_str(&s, &l, cast_uchar "REST ");
add_num_to_str(&s, &l, c->from);
add_to_str(&s, &l, cast_uchar "\r\n");
inf->rest_sent = 1;
inf->pending_commands++;
} else c->from = 0;
add_to_str(&s, &l, cast_uchar "RETR /");
add_bytes_to_str(&s, &l, d, de - d);
add_to_str(&s, &l, cast_uchar "\r\n");
}
inf->opc = inf->pending_commands;
if ((unsigned)l > MAXINT - sizeof(struct ftp_connection_info) - 1) overalloc();
inf2 = mem_realloc(inf, sizeof(struct ftp_connection_info) + l + 1);
strcpy(cast_char (inf = inf2)->cmdbuf, cast_const_char s);
mem_free(s);
c->info = inf;
mem_free(d);
return inf;
}
void exception(struct connection *c)
{
setcstate(c, S_EXCEPT);
retry_connection(c);
}
struct ftp_connection_info *add_file_cmd_to_str(struct connection *c)
{
unsigned char *d = get_url_data(c->url);
unsigned char *de;
int del;
unsigned char pc[6];
int ps;
struct ftp_connection_info *inf, *inf2;
unsigned char *s;
int l;
if (!d) {
internal("get_url_data failed");
setcstate(c, S_INTERNAL);
abort_connection(c);
return NULL;
}
de = init_str(), del = 0;
add_conv_str(&de, &del, d, strlen(d), -2);
d = de;
inf = mem_alloc(sizeof(struct ftp_connection_info));
memset(inf, 0, sizeof(struct ftp_connection_info));
l = 0;
s = init_str();
inf->pasv = ftp_options.passive_ftp;
if (*c->socks_proxy) inf->pasv = 1;
c->info = inf;
if (!inf->pasv) if ((ps = get_pasv_socket(c, c->sock1, &c->sock2, pc))) {
mem_free(d);
return NULL;
}
#ifdef HAVE_IPTOS
if (ftp_options.set_tos) {
int on = IPTOS_THROUGHPUT;
setsockopt(c->sock2, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int));
}
#endif
if (!(de = strchr(d, POST_CHAR))) de = d + strlen(d);
if (d == de || de[-1] == '/') {
inf->dir = 1;
inf->pending_commands = 4;
add_to_str(&s, &l, "TYPE A\r\n");
if (!inf->pasv) {
add_to_str(&s, &l, "PORT ");
add_num_to_str(&s, &l, pc[0]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[1]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[2]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[3]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[4]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[5]);
add_to_str(&s, &l, "\r\n");
} else {
add_to_str(&s, &l, "PASV\r\n");
}
add_to_str(&s, &l, "CWD /");
add_bytes_to_str(&s, &l, d, de - d);
add_to_str(&s, &l, "\r\nLIST\r\n");
c->from = 0;
} else {
inf->dir = 0;
inf->pending_commands = 3;
add_to_str(&s, &l, "TYPE I\r\n");
if (!inf->pasv) {
add_to_str(&s, &l, "PORT ");
add_num_to_str(&s, &l, pc[0]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[1]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[2]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[3]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[4]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[5]);
add_to_str(&s, &l, "\r\n");
} else {
add_to_str(&s, &l, "PASV\r\n");
}
if (c->from && c->no_cache < NC_IF_MOD) {
add_to_str(&s, &l, "REST ");
add_num_to_str(&s, &l, c->from);
add_to_str(&s, &l, "\r\n");
inf->rest_sent = 1;
inf->pending_commands++;
} else c->from = 0;
add_to_str(&s, &l, "RETR /");
add_bytes_to_str(&s, &l, d, de - d);
add_to_str(&s, &l, "\r\n");
}
inf->opc = inf->pending_commands;
if ((unsigned)l > MAXINT - sizeof(struct ftp_connection_info) - 1) overalloc();
inf2 = mem_realloc(inf, sizeof(struct ftp_connection_info) + l + 1);
strcpy((inf = inf2)->cmdbuf, s);
mem_free(s);
c->info = inf;
mem_free(d);
return inf;
}
void http_got_header(struct connection *c, struct read_buffer *rb)
{
int cf;
int state = c->state != S_PROC ? S_GETH : S_PROC;
unsigned char *head;
unsigned char *cookie, *ch;
int a, h, version;
unsigned char *d;
struct cache_entry *e;
struct http_connection_info *info;
unsigned char *host = upcase(c->url[0]) != 'P' ? c->url : get_url_data(c->url);
set_timeout(c);
info = c->info;
if (rb->close == 2) {
unsigned char *h;
if (!c->tries && (h = get_host_name(host))) {
if (info->bl_flags & BL_NO_CHARSET) {
del_blacklist_entry(h, BL_NO_CHARSET);
} else {
add_blacklist_entry(h, BL_NO_CHARSET);
c->tries = -1;
}
mem_free(h);
}
setcstate(c, S_CANT_READ);
retry_connection(c);
return;
}
rb->close = 0;
again:
if ((a = get_header(rb)) == -1) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if (!a) {
read_from_socket(c, c->sock1, rb, http_got_header);
setcstate(c, state);
return;
}
if (a != -2) {
head = mem_alloc(a + 1);
memcpy(head, rb->data, a);
head[a] = 0;
kill_buffer_data(rb, a);
} else {
head = stracpy("HTTP/0.9 200 OK\r\nContent-Type: text/html\r\n\r\n");
}
if (get_http_code(head, &h, &version) || h == 101) {
mem_free(head);
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if (check_http_server_bugs(host, c->info, head) && is_connection_restartable(c)) {
mem_free(head);
setcstate(c, S_RESTART);
retry_connection(c);
return;
}
ch = head;
while ((cookie = parse_http_header(ch, "Set-Cookie", &ch))) {
unsigned char *host = upcase(c->url[0]) != 'P' ? c->url : get_url_data(c->url);
set_cookie(NULL, host, cookie);
mem_free(cookie);
}
if (h == 100) {
mem_free(head);
state = S_PROC;
goto again;
}
if (h < 200) {
mem_free(head);
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if (h == 204) {
mem_free(head);
setcstate(c, S_HTTP_204);
http_end_request(c, 0);
return;
}
if (h == 304) {
mem_free(head);
setcstate(c, S_OK);
http_end_request(c, 1);
return;
}
if ((h == 500 || h == 502 || h == 503 || h == 504) && http_bugs.retry_internal_errors && is_connection_restartable(c)) {
/* !!! FIXME: wait some time ... */
mem_free(head);
setcstate(c, S_RESTART);
retry_connection(c);
return;
}
if (!c->cache && get_cache_entry(c->url, &c->cache)) {
mem_free(head);
setcstate(c, S_OUT_OF_MEM);
abort_connection(c);
return;
}
e = c->cache;
e->http_code = h;
if (e->head) mem_free(e->head);
e->head = head;
if ((d = parse_http_header(head, "Expires", NULL))) {
time_t t = parse_http_date(d);
if (t && e->expire_time != 1) e->expire_time = t;
mem_free(d);
}
if ((d = parse_http_header(head, "Pragma", NULL))) {
if (!casecmp(d, "no-cache", 8)) e->expire_time = 1;
mem_free(d);
}
if ((d = parse_http_header(head, "Cache-Control", NULL))) {
char *f = d;
while (1) {
while (*f && (*f == ' ' || *f == ',')) f++;
if (!*f) break;
if (!casecmp(f, "no-cache", 8) || !casecmp(f, "must-revalidate", 15)) {
e->expire_time = 1;
}
if (!casecmp(f, "max-age=", 8)) {
if (e->expire_time != 1) e->expire_time = time(NULL) + atoi(f + 8);
}
while (*f && *f != ',') f++;
}
mem_free(d);
}
#ifdef HAVE_SSL
if (c->ssl) {
int l = 0;
if (e->ssl_info) mem_free(e->ssl_info);
e->ssl_info = init_str();
add_num_to_str(&e->ssl_info, &l, SSL_get_cipher_bits(c->ssl, NULL));
add_to_str(&e->ssl_info, &l, "-bit ");
add_to_str(&e->ssl_info, &l, SSL_get_cipher_version(c->ssl));
add_to_str(&e->ssl_info, &l, " ");
add_to_str(&e->ssl_info, &l, (unsigned char *)SSL_get_cipher_name(c->ssl));
}
#endif
if (e->redirect) mem_free(e->redirect), e->redirect = NULL;
if (h == 301 || h == 302 || h == 303 || h == 307) {
if ((h == 302 || h == 307) && !e->expire_time) e->expire_time = 1;
if ((d = parse_http_header(e->head, "Location", NULL))) {
unsigned char *user, *ins;
unsigned char *newuser, *newpassword;
if (!parse_url(d, NULL, &user, NULL, NULL, NULL, &ins, NULL, NULL, NULL, NULL, NULL, NULL) && !user && ins && (newuser = get_user_name(host))) {
if (*newuser) {
int ins_off = ins - d;
newpassword = get_pass(host);
if (!newpassword) newpassword = stracpy("");
add_to_strn(&newuser, ":");
add_to_strn(&newuser, newpassword);
add_to_strn(&newuser, "@");
extend_str(&d, strlen(newuser));
ins = d + ins_off;
memmove(ins + strlen(newuser), ins, strlen(ins) + 1);
memcpy(ins, newuser, strlen(newuser));
mem_free(newpassword);
}
mem_free(newuser);
}
if (e->redirect) mem_free(e->redirect);
e->redirect = d;
e->redirect_get = h == 303;
}
}
if (!e->expire_time && strchr(c->url, POST_CHAR)) e->expire_time = 1;
info->close = 0;
info->length = -1;
info->version = version;
if ((d = parse_http_header(e->head, "Connection", NULL)) || (d = parse_http_header(e->head, "Proxy-Connection", NULL))) {
if (!strcasecmp(d, "close")) info->close = 1;
mem_free(d);
} else if (version < 11) info->close = 1;
cf = c->from;
c->from = 0;
if ((d = parse_http_header(e->head, "Content-Range", NULL))) {
if (strlen(d) > 6) {
d[5] = 0;
if (!(strcasecmp(d, "bytes")) && d[6] >= '0' && d[6] <= '9') {
#if defined(HAVE_STRTOLL)
long long f = strtoll(d + 6, NULL, 10);
#elif defined(HAVE_STRTOQ)
longlong f = strtoq(d + 6, NULL, 10);
#else
long f = strtol(d + 6, NULL, 10);
if (f == MAXLONG) f = -1;
#endif
if (f >= 0 && (off_t)f >= 0 && (off_t)f == f) c->from = f;
}
}
mem_free(d);
}
if (cf && !c->from && !c->unrestartable) c->unrestartable = 1;
if (c->from > cf || c->from < 0) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if ((d = parse_http_header(e->head, "Content-Length", NULL))) {
unsigned char *ep;
#if defined(HAVE_STRTOLL)
long long l = strtoll(d, (char **)(void *)&ep, 10);
#elif defined(HAVE_STRTOQ)
longlong l = strtoq(d, (char **)(void *)&ep, 10);
#else
long l = strtol(d, (char **)(void *)&ep, 10);
if (l == MAXLONG) l = -1;
#endif
if (!*ep && l >= 0 && (off_t)l >= 0 && (off_t)l == l) {
if (!info->close || version >= 11) info->length = l;
if (c->from + l >= 0) c->est_length = c->from + l;
}
mem_free(d);
}
if ((d = parse_http_header(e->head, "Accept-Ranges", NULL))) {
if (!strcasecmp(d, "none") && !c->unrestartable) c->unrestartable = 1;
mem_free(d);
} else {
if (!c->unrestartable && !c->from) c->unrestartable = 1;
}
if (info->bl_flags & BL_NO_RANGE && !c->unrestartable) c->unrestartable = 1;
if ((d = parse_http_header(e->head, "Transfer-Encoding", NULL))) {
if (!strcasecmp(d, "chunked")) {
info->length = -2;
info->chunk_remaining = -1;
}
mem_free(d);
}
if (!info->close && info->length == -1) info->close = 1;
if ((d = parse_http_header(e->head, "Last-Modified", NULL))) {
if (e->last_modified && strcasecmp(e->last_modified, d)) {
delete_entry_content(e);
if (c->from) {
c->from = 0;
mem_free(d);
setcstate(c, S_MODIFIED);
retry_connection(c);
return;
}
}
if (!e->last_modified) e->last_modified = d;
else mem_free(d);
}
if (!e->last_modified && (d = parse_http_header(e->head, "Date", NULL)))
e->last_modified = d;
if (info->length == -1 || (version < 11 && info->close)) rb->close = 1;
read_http_data(c, rb);
}
void https_func(struct connection *c)
{
setcstate(c, S_NO_SSL);
abort_connection(c);
}
void file_func(struct connection *c)
{
struct cache_entry *e;
unsigned char *file, *name, *head;
int fl;
DIR *d;
int h, r;
struct stat stt;
if (anonymous && !anonymousGinga) {
setcstate(c, S_BAD_URL);
abort_connection(c);
return;
}
if (!(name = get_filename(c->url))) {
setcstate(c, S_OUT_OF_MEM); abort_connection(c); return;
}
if (anonymousGinga && !allowedPath(name)){
setcstate(c, S_BAD_URL);
abort_connection(c);
return;
}
if (stat(name, &stt)) {
mem_free(name);
setcstate(c, -errno); abort_connection(c); return;
}
if (!S_ISDIR(stt.st_mode) && !S_ISREG(stt.st_mode)) {
mem_free(name);
setcstate(c, S_FILE_TYPE); abort_connection(c); return;
}
if ((h = open(name, O_RDONLY | O_NOCTTY)) == -1) {
int er = errno;
if ((d = opendir(name))) goto dir;
mem_free(name);
setcstate(c, -er); abort_connection(c); return;
}
set_bin(h);
if (S_ISDIR(stt.st_mode)) {
struct dirs *dir;
int dirl;
int i;
struct dirent *de;
d = opendir(name);
close(h);
if (!d) {
mem_free(name);
setcstate(c, -errno); abort_connection(c); return;
}
dir:
dir = DUMMY, dirl = 0;
if (name[0] && !dir_sep(name[strlen(name) - 1])) {
if (get_cache_entry(c->url, &e)) {
mem_free(name);
closedir(d);
setcstate(c, S_OUT_OF_MEM); abort_connection(c); return;
}
c->cache = e;
if (e->redirect) mem_free(e->redirect);
e->redirect = stracpy(c->url);
e->redirect_get = 1;
add_to_strn(&e->redirect, "/");
mem_free(name);
closedir(d);
goto end;
}
last_uid = -1;
last_gid = -1;
file = init_str();
fl = 0;
add_to_str(&file, &fl, "<html><head><title>");
add_conv_str(&file, &fl, name, strlen(name), -1);
add_to_str(&file, &fl, "</title></head><body><h2>Directory ");
add_conv_str(&file, &fl, name, strlen(name), -1);
add_to_str(&file, &fl, "</h2><pre>");
while ((de = readdir(d))) {
struct stat stt, *stp;
unsigned char **p;
int l;
unsigned char *n;
if (!strcmp(de->d_name, ".")) continue;
if ((unsigned)dirl > MAXINT / sizeof(struct dirs) - 1) overalloc();
dir = mem_realloc(dir, (dirl + 1) * sizeof(struct dirs));
dir[dirl].f = stracpy(de->d_name);
*(p = &dir[dirl++].s) = init_str();
l = 0;
n = stracpy(name);
add_to_strn(&n, de->d_name);
#ifdef FS_UNIX_SOFTLINKS
if (lstat(n, &stt))
#else
if (stat(n, &stt))
#endif
stp = NULL;
else stp = &stt;
mem_free(n);
stat_mode(p, &l, stp);
stat_links(p, &l, stp);
stat_user(p, &l, stp, 0);
stat_user(p, &l, stp, 1);
stat_size(p, &l, stp);
stat_date(p, &l, stp);
}
closedir(d);
if (dirl) qsort(dir, dirl, sizeof(struct dirs), (int(*)(const void *, const void *))comp_de);
for (i = 0; i < dirl; i++) {
unsigned char *lnk = NULL;
#ifdef FS_UNIX_SOFTLINKS
if (dir[i].s[0] == 'l') {
unsigned char *buf = NULL;
int size = 0;
int r;
unsigned char *n = stracpy(name);
add_to_strn(&n, dir[i].f);
do {
if (buf) mem_free(buf);
size += ALLOC_GR;
if ((unsigned)size > MAXINT) overalloc();
buf = mem_alloc(size);
r = readlink(n, buf, size);
} while (r == size);
if (r == -1) goto yyy;
buf[r] = 0;
lnk = buf;
goto xxx;
yyy:
mem_free(buf);
xxx:
mem_free(n);
}
#endif
/*add_to_str(&file, &fl, " ");*/
add_to_str(&file, &fl, dir[i].s);
add_to_str(&file, &fl, "<a href=\"");
add_conv_str(&file, &fl, dir[i].f, strlen(dir[i].f), 1);
if (dir[i].s[0] == 'd') add_to_str(&file, &fl, "/");
else if (lnk) {
struct stat st;
unsigned char *n = stracpy(name);
add_to_strn(&n, dir[i].f);
if (!stat(n, &st)) if (S_ISDIR(st.st_mode)) add_to_str(&file, &fl, "/");
mem_free(n);
}
add_to_str(&file, &fl, "\">");
/*if (dir[i].s[0] == 'd') add_to_str(&file, &fl, "<font color=\"yellow\">");*/
add_conv_str(&file, &fl, dir[i].f, strlen(dir[i].f), 0);
/*if (dir[i].s[0] == 'd') add_to_str(&file, &fl, "</font>");*/
add_to_str(&file, &fl, "</a>");
if (lnk) {
add_to_str(&file, &fl, " -> ");
add_to_str(&file, &fl, lnk);
mem_free(lnk);
}
add_to_str(&file, &fl, "\n");
}
mem_free(name);
for (i = 0; i < dirl; i++) mem_free(dir[i].s), mem_free(dir[i].f);
mem_free(dir);
add_to_str(&file, &fl, "</pre></body></html>\n");
head = stracpy("\r\nContent-Type: text/html\r\n");
} else {
mem_free(name);
/* + !stt.st_size is there because of bug in Linux. Read returns
-EACCES when reading 0 bytes to invalid address */
if (stt.st_size > MAXINT) {
close(h);
setcstate(c, S_LARGE_FILE); abort_connection(c);
return;
}
file = mem_alloc(stt.st_size + !stt.st_size);
if ((r = read(h, file, stt.st_size)) != stt.st_size) {
mem_free(file); close(h);
setcstate(c, r == -1 ? -errno : S_FILE_ERROR);
abort_connection(c); return;
}
close(h);
fl = stt.st_size;
head = stracpy("");
}
if (get_cache_entry(c->url, &e)) {
mem_free(file);
setcstate(c, S_OUT_OF_MEM); abort_connection(c); return;
}
if (e->head) mem_free(e->head);
e->head = head;
c->cache = e;
add_fragment(e, 0, file, fl);
truncate_entry(e, fl, 1);
mem_free(file);
end:
c->cache->incomplete = 0;
setcstate(c, S_OK);
abort_connection(c);
}
void read_http_data(struct connection *c, struct read_buffer *rb)
{
struct http_connection_info *info = c->info;
set_timeout(c);
if (rb->close == 2) {
setcstate(c, S_OK);
http_end_request(c, 0);
return;
}
if (info->length != -2) {
int l = rb->len;
if (info->length >= 0 && info->length < l) l = info->length;
if (c->from + l < 0) {
setcstate(c, S_LARGE_FILE);
abort_connection(c);
return;
}
c->received += l;
if (add_fragment(c->cache, c->from, rb->data, l) == 1) c->tries = 0;
if (info->length >= 0) info->length -= l;
c->from += l;
kill_buffer_data(rb, l);
if (!info->length && !rb->close) {
setcstate(c, S_OK);
http_end_request(c, 0);
return;
}
} else {
next_chunk:
if (info->chunk_remaining == -2) {
int l;
if ((l = is_line_in_buffer(rb))) {
if (l == -1) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
kill_buffer_data(rb, l);
if (l <= 2) {
setcstate(c, S_OK);
http_end_request(c, 0);
return;
}
goto next_chunk;
}
} else if (info->chunk_remaining == -1) {
int l;
if ((l = is_line_in_buffer(rb))) {
unsigned char *de;
long n = 0; /* warning, go away */
if (l != -1) n = strtol(rb->data, (char **)(void *)&de, 16);
if (l == -1 || n < 0 || n >= MAXINT || de == rb->data) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
kill_buffer_data(rb, l);
if (!(info->chunk_remaining = n)) info->chunk_remaining = -2;
goto next_chunk;
}
} else {
int l = info->chunk_remaining;
if (l > rb->len) l = rb->len;
if (c->from + l < 0) {
setcstate(c, S_LARGE_FILE);
abort_connection(c);
return;
}
c->received += l;
if (add_fragment(c->cache, c->from, rb->data, l) == 1) c->tries = 0;
info->chunk_remaining -= l;
c->from += l;
kill_buffer_data(rb, l);
if (!info->chunk_remaining && rb->len >= 1) {
if (rb->data[0] == 10) kill_buffer_data(rb, 1);
else {
if (rb->data[0] != 13 || (rb->len >= 2 && rb->data[1] != 10)) {
setcstate(c, S_HTTP_ERROR);
abort_connection(c);
return;
}
if (rb->len < 2) goto read_more;
kill_buffer_data(rb, 2);
}
info->chunk_remaining = -1;
goto next_chunk;
}
}
}
read_more:
read_from_socket(c, c->sock1, rb, read_http_data);
setcstate(c, S_TRANS);
}