static ngx_int_t
ngx_http_header_filter(ngx_http_request_t *r)
{
u_char *p;
size_t len;
ngx_str_t host, *status_line;
ngx_buf_t *b;
ngx_uint_t status, i, port;
ngx_chain_t out;
ngx_list_part_t *part;
ngx_table_elt_t *header;
ngx_connection_t *c;
ngx_http_core_loc_conf_t *clcf;
ngx_http_core_srv_conf_t *cscf;
struct sockaddr_in *sin;
#if (NGX_HAVE_INET6)
struct sockaddr_in6 *sin6;
#endif
u_char addr[NGX_SOCKADDR_STRLEN];
if (r->header_sent) {
return NGX_OK;
}
r->header_sent = 1;
if (r != r->main) {
return NGX_OK;
}
if (r->http_version < NGX_HTTP_VERSION_10) {
return NGX_OK;
}
if (r->method == NGX_HTTP_HEAD) {
r->header_only = 1;
}
if (r->headers_out.last_modified_time != -1) {
if (r->headers_out.status != NGX_HTTP_OK
&& r->headers_out.status != NGX_HTTP_PARTIAL_CONTENT
&& r->headers_out.status != NGX_HTTP_NOT_MODIFIED)
{
r->headers_out.last_modified_time = -1;
r->headers_out.last_modified = NULL;
}
}
len = sizeof("HTTP/1.x ") - 1 + sizeof(CRLF) - 1
/* the end of the header */
+ sizeof(CRLF) - 1;
/* status line */
if (r->headers_out.status_line.len) {
len += r->headers_out.status_line.len;
status_line = &r->headers_out.status_line;
#if (NGX_SUPPRESS_WARN)
status = 0;
#endif
} else {
status = r->headers_out.status;
if (status >= NGX_HTTP_OK
&& status < NGX_HTTP_LAST_2XX)
{
/* 2XX */
if (status == NGX_HTTP_NO_CONTENT) {
r->header_only = 1;
ngx_str_null(&r->headers_out.content_type);
r->headers_out.last_modified_time = -1;
r->headers_out.last_modified = NULL;
r->headers_out.content_length = NULL;
r->headers_out.content_length_n = -1;
}
status -= NGX_HTTP_OK;
status_line = &ngx_http_status_lines[status];
len += ngx_http_status_lines[status].len;
} else if (status >= NGX_HTTP_MOVED_PERMANENTLY
&& status < NGX_HTTP_LAST_3XX)
{
/* 3XX */
if (status == NGX_HTTP_NOT_MODIFIED) {
r->header_only = 1;
}
status = status - NGX_HTTP_MOVED_PERMANENTLY + NGX_HTTP_OFF_3XX;
status_line = &ngx_http_status_lines[status];
len += ngx_http_status_lines[status].len;
} else if (status >= NGX_HTTP_BAD_REQUEST
&& status < NGX_HTTP_LAST_4XX)
{
/* 4XX */
status = status - NGX_HTTP_BAD_REQUEST
+ NGX_HTTP_OFF_4XX;
status_line = &ngx_http_status_lines[status];
len += ngx_http_status_lines[status].len;
} else if (status >= NGX_HTTP_INTERNAL_SERVER_ERROR
&& status < NGX_HTTP_LAST_5XX)
{
/* 5XX */
status = status - NGX_HTTP_INTERNAL_SERVER_ERROR
+ NGX_HTTP_OFF_5XX;
status_line = &ngx_http_status_lines[status];
len += ngx_http_status_lines[status].len;
} else {
len += NGX_INT_T_LEN + 1 /* SP */;
status_line = NULL;
}
if (status_line && status_line->len == 0) {
status = r->headers_out.status;
len += NGX_INT_T_LEN + 1 /* SP */;
status_line = NULL;
}
}
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (r->headers_out.server == NULL) {
len += clcf->server_tokens ? sizeof(ngx_http_server_full_string) - 1:
sizeof(ngx_http_server_string) - 1;
}
if (r->headers_out.date == NULL) {
len += sizeof("Date: Mon, 28 Sep 1970 06:00:00 GMT" CRLF) - 1;
}
if (r->headers_out.content_type.len) {
len += sizeof("Content-Type: ") - 1
+ r->headers_out.content_type.len + 2;
if (r->headers_out.content_type_len == r->headers_out.content_type.len
&& r->headers_out.charset.len)
{
len += sizeof("; charset=") - 1 + r->headers_out.charset.len;
}
}
if (r->headers_out.content_length == NULL
&& r->headers_out.content_length_n >= 0)
{
len += sizeof("Content-Length: ") - 1 + NGX_OFF_T_LEN + 2;
}
if (r->headers_out.last_modified == NULL
&& r->headers_out.last_modified_time != -1)
{
len += sizeof("Last-Modified: Mon, 28 Sep 1970 06:00:00 GMT" CRLF) - 1;
}
c = r->connection;
if (r->headers_out.location
&& r->headers_out.location->value.len
&& r->headers_out.location->value.data[0] == '/')
{
r->headers_out.location->hash = 0;
if (clcf->server_name_in_redirect) {
cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
host = cscf->server_name;
} else if (r->headers_in.server.len) {
host = r->headers_in.server;
} else {
host.len = NGX_SOCKADDR_STRLEN;
host.data = addr;
if (ngx_connection_local_sockaddr(c, &host, 0) != NGX_OK) {
return NGX_ERROR;
}
}
switch (c->local_sockaddr->sa_family) {
#if (NGX_HAVE_INET6)
case AF_INET6:
sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
port = ntohs(sin6->sin6_port);
break;
#endif
#if (NGX_HAVE_UNIX_DOMAIN)
case AF_UNIX:
port = 0;
break;
#endif
default: /* AF_INET */
sin = (struct sockaddr_in *) c->local_sockaddr;
port = ntohs(sin->sin_port);
break;
}
len += sizeof("Location: https://") - 1
+ host.len
+ r->headers_out.location->value.len + 2;
if (clcf->port_in_redirect) {
#if (NGX_HTTP_SSL)
if (c->ssl)
port = (port == 443) ? 0 : port;
else
#endif
port = (port == 80) ? 0 : port;
} else {
port = 0;
}
if (port) {
len += sizeof(":65535") - 1;
}
} else {
ngx_str_null(&host);
port = 0;
}
if (r->chunked) {
len += sizeof("Transfer-Encoding: chunked" CRLF) - 1;
}
if (r->headers_out.status == NGX_HTTP_SWITCHING_PROTOCOLS) {
len += sizeof("Connection: upgrade" CRLF) - 1;
} else if (r->keepalive) {
len += sizeof("Connection: keep-alive" CRLF) - 1;
/*
* MSIE and Opera ignore the "Keep-Alive: timeout=<N>" header.
* MSIE keeps the connection alive for about 60-65 seconds.
* Opera keeps the connection alive very long.
* Mozilla keeps the connection alive for N plus about 1-10 seconds.
* Konqueror keeps the connection alive for about N seconds.
*/
if (clcf->keepalive_header) {
len += sizeof("Keep-Alive: timeout=") - 1 + NGX_TIME_T_LEN + 2;
}
} else {
len += sizeof("Connection: close" CRLF) - 1;
}
#if (NGX_HTTP_GZIP)
if (r->gzip_vary) {
if (clcf->gzip_vary) {
len += sizeof("Vary: Accept-Encoding" CRLF) - 1;
} else {
r->gzip_vary = 0;
}
}
#endif
part = &r->headers_out.headers.part;
header = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
if (header[i].hash == 0) {
continue;
}
len += header[i].key.len + sizeof(": ") - 1 + header[i].value.len
+ sizeof(CRLF) - 1;
}
b = ngx_create_temp_buf(r->pool, len);
if (b == NULL) {
return NGX_ERROR;
}
/* "HTTP/1.x " */
b->last = ngx_cpymem(b->last, "HTTP/1.1 ", sizeof("HTTP/1.x ") - 1);
/* status line */
if (status_line) {
b->last = ngx_copy(b->last, status_line->data, status_line->len);
} else {
b->last = ngx_sprintf(b->last, "%03ui ", status);
}
*b->last++ = CR; *b->last++ = LF;
if (r->headers_out.server == NULL) {
if (clcf->server_tokens) {
p = (u_char *) ngx_http_server_full_string;
len = sizeof(ngx_http_server_full_string) - 1;
} else {
p = (u_char *) ngx_http_server_string;
len = sizeof(ngx_http_server_string) - 1;
}
b->last = ngx_cpymem(b->last, p, len);
}
if (r->headers_out.date == NULL) {
b->last = ngx_cpymem(b->last, "Date: ", sizeof("Date: ") - 1);
b->last = ngx_cpymem(b->last, ngx_cached_http_time.data,
ngx_cached_http_time.len);
*b->last++ = CR; *b->last++ = LF;
}
if (r->headers_out.content_type.len) {
b->last = ngx_cpymem(b->last, "Content-Type: ",
sizeof("Content-Type: ") - 1);
p = b->last;
b->last = ngx_copy(b->last, r->headers_out.content_type.data,
r->headers_out.content_type.len);
if (r->headers_out.content_type_len == r->headers_out.content_type.len
&& r->headers_out.charset.len)
{
b->last = ngx_cpymem(b->last, "; charset=",
sizeof("; charset=") - 1);
b->last = ngx_copy(b->last, r->headers_out.charset.data,
r->headers_out.charset.len);
/* update r->headers_out.content_type for possible logging */
r->headers_out.content_type.len = b->last - p;
r->headers_out.content_type.data = p;
}
*b->last++ = CR; *b->last++ = LF;
}
if (r->headers_out.content_length == NULL
&& r->headers_out.content_length_n >= 0)
{
b->last = ngx_sprintf(b->last, "Content-Length: %O" CRLF,
r->headers_out.content_length_n);
}
if (r->headers_out.last_modified == NULL
&& r->headers_out.last_modified_time != -1)
{
b->last = ngx_cpymem(b->last, "Last-Modified: ",
sizeof("Last-Modified: ") - 1);
b->last = ngx_http_time(b->last, r->headers_out.last_modified_time);
*b->last++ = CR; *b->last++ = LF;
}
if (host.data) {
p = b->last + sizeof("Location: ") - 1;
b->last = ngx_cpymem(b->last, "Location: http",
sizeof("Location: http") - 1);
#if (NGX_HTTP_SSL)
if (c->ssl) {
*b->last++ ='s';
}
#endif
*b->last++ = ':'; *b->last++ = '/'; *b->last++ = '/';
b->last = ngx_copy(b->last, host.data, host.len);
if (port) {
b->last = ngx_sprintf(b->last, ":%ui", port);
}
b->last = ngx_copy(b->last, r->headers_out.location->value.data,
r->headers_out.location->value.len);
/* update r->headers_out.location->value for possible logging */
r->headers_out.location->value.len = b->last - p;
r->headers_out.location->value.data = p;
ngx_str_set(&r->headers_out.location->key, "Location");
*b->last++ = CR; *b->last++ = LF;
}
if (r->chunked) {
b->last = ngx_cpymem(b->last, "Transfer-Encoding: chunked" CRLF,
sizeof("Transfer-Encoding: chunked" CRLF) - 1);
}
if (r->headers_out.status == NGX_HTTP_SWITCHING_PROTOCOLS) {
b->last = ngx_cpymem(b->last, "Connection: upgrade" CRLF,
sizeof("Connection: upgrade" CRLF) - 1);
} else if (r->keepalive) {
b->last = ngx_cpymem(b->last, "Connection: keep-alive" CRLF,
sizeof("Connection: keep-alive" CRLF) - 1);
if (clcf->keepalive_header) {
b->last = ngx_sprintf(b->last, "Keep-Alive: timeout=%T" CRLF,
clcf->keepalive_header);
}
} else {
b->last = ngx_cpymem(b->last, "Connection: close" CRLF,
sizeof("Connection: close" CRLF) - 1);
}
#if (NGX_HTTP_GZIP)
if (r->gzip_vary) {
b->last = ngx_cpymem(b->last, "Vary: Accept-Encoding" CRLF,
sizeof("Vary: Accept-Encoding" CRLF) - 1);
}
#endif
part = &r->headers_out.headers.part;
header = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
if (header[i].hash == 0) {
continue;
}
b->last = ngx_copy(b->last, header[i].key.data, header[i].key.len);
*b->last++ = ':'; *b->last++ = ' ';
b->last = ngx_copy(b->last, header[i].value.data, header[i].value.len);
*b->last++ = CR; *b->last++ = LF;
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
"%*s", (size_t) (b->last - b->pos), b->pos);
/* the end of HTTP header */
*b->last++ = CR; *b->last++ = LF;
r->header_size = b->last - b->pos;
if (r->header_only) {
b->last_buf = 1;
}
out.buf = b;
out.next = NULL;
return ngx_http_write_filter(r, &out);
}
static ngx_int_t ngx_http_header_filter(ngx_http_request_t *r)
{
u_char *p;
size_t len;
ngx_uint_t status, i;
ngx_buf_t *b;
ngx_chain_t *ln;
ngx_list_part_t *part;
ngx_table_elt_t *header;
ngx_http_core_loc_conf_t *clcf;
if (r->http_version < NGX_HTTP_VERSION_10) {
return NGX_OK;
}
if (r->method == NGX_HTTP_HEAD) {
r->header_only = 1;
}
if (r->headers_out.last_modified_time != -1) {
if (r->headers_out.status != NGX_HTTP_OK
&& r->headers_out.status != NGX_HTTP_NOT_MODIFIED
&& r->headers_out.status != NGX_HTTP_PARTIAL_CONTENT)
{
r->headers_out.last_modified_time = -1;
r->headers_out.last_modified = NULL;
}
}
/* 2 is for trailing "\r\n" and 2 is for "\r\n" in the end of header */
len = sizeof("HTTP/1.x ") - 1 + 2 + 2;
/* status line */
if (r->headers_out.status_line.len) {
len += r->headers_out.status_line.len;
#if (NGX_SUPPRESS_WARN)
status = NGX_INVALID_ARRAY_INDEX;
#endif
} else {
if (r->headers_out.status < NGX_HTTP_MOVED_PERMANENTLY) {
/* 2XX */
status = r->headers_out.status - NGX_HTTP_OK;
} else if (r->headers_out.status < NGX_HTTP_BAD_REQUEST) {
/* 3XX */
status = r->headers_out.status - NGX_HTTP_MOVED_PERMANENTLY + 8;
if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) {
r->header_only = 1;
}
} else if (r->headers_out.status < NGX_HTTP_INTERNAL_SERVER_ERROR) {
/* 4XX */
status = r->headers_out.status - NGX_HTTP_BAD_REQUEST + 8 + 4;
} else {
/* 5XX */
status = r->headers_out.status
- NGX_HTTP_INTERNAL_SERVER_ERROR + 8 + 4 + 17;
}
len += http_codes[status].len;
}
if (r->headers_out.server && r->headers_out.server->key.len) {
len += r->headers_out.server->key.len
+ r->headers_out.server->value.len + 2;
} else {
len += sizeof(server_string) - 1;
}
if (r->headers_out.date && r->headers_out.date->key.len) {
len += r->headers_out.date->key.len
+ r->headers_out.date->value.len + 2;
} else {
len += sizeof("Date: Mon, 28 Sep 1970 06:00:00 GMT" CRLF) - 1;
}
if (r->headers_out.content_length == NULL) {
if (r->headers_out.content_length_n >= 0) {
len += sizeof("Content-Length: ") - 1 + NGX_OFF_T_LEN + 2;
}
}
if (r->headers_out.content_type && r->headers_out.content_type->value.len) {
r->headers_out.content_type->key.len = 0;
len += sizeof("Content-Type: ") - 1
+ r->headers_out.content_type->value.len + 2;
if (r->headers_out.charset.len) {
len += sizeof("; charset=") - 1 + r->headers_out.charset.len;
}
}
if (r->headers_out.location
&& r->headers_out.location->value.len
&& r->headers_out.location->value.data[0] == '/')
{
r->headers_out.location->key.len = 0;
len += sizeof("Location: http://") - 1
+ r->server_name->len + r->headers_out.location->value.len + 2;
if (r->port != 80) {
len += r->port_text->len;
}
}
if (r->headers_out.last_modified && r->headers_out.last_modified->key.len) {
len += r->headers_out.last_modified->key.len
+ r->headers_out.last_modified->value.len + 2;
} else if (r->headers_out.last_modified_time != -1) {
len += sizeof("Last-Modified: Mon, 28 Sep 1970 06:00:00 GMT" CRLF) - 1;
}
if (r->chunked) {
len += sizeof("Transfer-Encoding: chunked" CRLF) - 1;
}
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (r->keepalive) {
len += sizeof("Connection: keep-alive" CRLF) - 1;
/*
* MSIE and Opera ignore the "Keep-Alive: timeout=<N>" header.
* MSIE keeps the connection alive for about 60-65 seconds.
* Opera keeps the connection alive very long.
* Mozilla keeps the connection alive for N plus about 1-10 seconds.
* Konqueror keeps the connection alive for about N seconds.
*/
if (clcf->keepalive_header
&& (r->headers_in.gecko || r->headers_in.konqueror))
{
len += sizeof("Keep-Alive: timeout=") - 1 + TIME_T_LEN + 2;
}
} else {
len += sizeof("Connection: closed" CRLF) - 1;
}
part = &r->headers_out.headers.part;
header = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
if (header[i].key.len == 0) {
continue;
}
/* 2 is for ": " and 2 is for "\r\n" */
len += header[i].key.len + 2 + header[i].value.len + 2;
}
if (!(b = ngx_create_temp_buf(r->pool, len))) {
return NGX_ERROR;
}
/* "HTTP/1.x " */
b->last = ngx_cpymem(b->last, "HTTP/1.1 ", sizeof("HTTP/1.x ") - 1);
/* status line */
if (r->headers_out.status_line.len) {
b->last = ngx_cpymem(b->last, r->headers_out.status_line.data,
r->headers_out.status_line.len);
} else {
b->last = ngx_cpymem(b->last, http_codes[status].data,
http_codes[status].len);
}
*(b->last++) = CR; *(b->last++) = LF;
if (!(r->headers_out.server && r->headers_out.server->key.len)) {
b->last = ngx_cpymem(b->last, server_string, sizeof(server_string) - 1);
}
if (!(r->headers_out.date && r->headers_out.date->key.len)) {
b->last = ngx_cpymem(b->last, "Date: ", sizeof("Date: ") - 1);
b->last = ngx_cpymem(b->last, ngx_cached_http_time.data,
ngx_cached_http_time.len);
*(b->last++) = CR; *(b->last++) = LF;
}
if (r->headers_out.content_length == NULL) {
if (r->headers_out.content_length_n >= 0) {
b->last += ngx_snprintf((char *) b->last,
sizeof("Content-Length: ") + NGX_OFF_T_LEN + 2,
"Content-Length: " OFF_T_FMT CRLF,
r->headers_out.content_length_n);
}
}
if (r->headers_out.content_type && r->headers_out.content_type->value.len) {
b->last = ngx_cpymem(b->last, "Content-Type: ",
sizeof("Content-Type: ") - 1);
p = b->last;
b->last = ngx_cpymem(b->last, r->headers_out.content_type->value.data,
r->headers_out.content_type->value.len);
if (r->headers_out.charset.len) {
b->last = ngx_cpymem(b->last, "; charset=",
sizeof("; charset=") - 1);
b->last = ngx_cpymem(b->last, r->headers_out.charset.data,
r->headers_out.charset.len);
r->headers_out.content_type->value.len = b->last - p;
r->headers_out.content_type->value.data = p;
}
*(b->last++) = CR; *(b->last++) = LF;
}
if (r->headers_out.location
&& r->headers_out.location->value.len
&& r->headers_out.location->value.data[0] == '/')
{
p = b->last + sizeof("Location: ") - 1;
b->last = ngx_cpymem(b->last, "Location: http://",
sizeof("Location: http://") - 1);
b->last = ngx_cpymem(b->last, r->server_name->data,
r->server_name->len);
if (r->port != 80) {
b->last = ngx_cpymem(b->last, r->port_text->data,
r->port_text->len);
}
b->last = ngx_cpymem(b->last, r->headers_out.location->value.data,
r->headers_out.location->value.len);
r->headers_out.location->value.len = b->last - p;
r->headers_out.location->value.data = p;
*(b->last++) = CR; *(b->last++) = LF;
}
if (!(r->headers_out.last_modified && r->headers_out.last_modified->key.len)
&& r->headers_out.last_modified_time != -1)
{
b->last = ngx_cpymem(b->last, "Last-Modified: ",
sizeof("Last-Modified: ") - 1);
b->last += ngx_http_time(b->last, r->headers_out.last_modified_time);
*(b->last++) = CR; *(b->last++) = LF;
}
if (r->chunked) {
b->last = ngx_cpymem(b->last, "Transfer-Encoding: chunked" CRLF,
sizeof("Transfer-Encoding: chunked" CRLF) - 1);
}
if (r->keepalive) {
b->last = ngx_cpymem(b->last, "Connection: keep-alive" CRLF,
sizeof("Connection: keep-alive" CRLF) - 1);
if (clcf->keepalive_header
&& (r->headers_in.gecko || r->headers_in.konqueror))
{
b->last += ngx_snprintf((char *) b->last,
sizeof("Keep-Alive: timeout=") + TIME_T_LEN + 2,
"Keep-Alive: timeout=" TIME_T_FMT CRLF,
clcf->keepalive_header);
}
} else {
b->last = ngx_cpymem(b->last, "Connection: close" CRLF,
sizeof("Connection: close" CRLF) - 1);
}
part = &r->headers_out.headers.part;
header = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
if (header[i].key.len == 0) {
continue;
}
b->last = ngx_cpymem(b->last, header[i].key.data, header[i].key.len);
*(b->last++) = ':' ; *(b->last++) = ' ' ;
b->last = ngx_cpymem(b->last, header[i].value.data,
header[i].value.len);
*(b->last++) = CR; *(b->last++) = LF;
}
#if (NGX_DEBUG)
*(b->last) = '\0';
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "%s\n", b->pos);
#endif
/* the end of HTTP header */
*(b->last++) = CR; *(b->last++) = LF;
r->header_size = b->last - b->pos;
if (r->header_only) {
b->last_buf = 1;
}
if (!(ln = ngx_alloc_chain_link(r->pool))) {
return NGX_ERROR;
}
ln->buf = b;
ln->next = NULL;
return ngx_http_write_filter(r, ln);
}
static ngx_int_t
ngx_http_header_filter(ngx_http_request_t *r)
{
u_char *p;
size_t len;
ngx_str_t host;
ngx_buf_t *b;
ngx_uint_t status, i;
ngx_chain_t out;
ngx_list_part_t *part;
ngx_table_elt_t *header;
ngx_http_core_loc_conf_t *clcf;
ngx_http_core_srv_conf_t *cscf;
/* AF_INET only */
u_char addr[INET_ADDRSTRLEN];
r->header_sent = 1;
if (r != r->main) {
return NGX_OK;
}
if (r->http_version < NGX_HTTP_VERSION_10) {
return NGX_OK;
}
if (r->method == NGX_HTTP_HEAD) {
r->header_only = 1;
}
if (r->headers_out.last_modified_time != -1) {
if (r->headers_out.status != NGX_HTTP_OK
&& r->headers_out.status != NGX_HTTP_PARTIAL_CONTENT
&& r->headers_out.status != NGX_HTTP_NOT_MODIFIED)
{
r->headers_out.last_modified_time = -1;
r->headers_out.last_modified = NULL;
}
}
len = sizeof("HTTP/1.x ") - 1 + sizeof(CRLF) - 1
/* the end of the header */
+ sizeof(CRLF) - 1;
/* status line */
if (r->headers_out.status_line.len) {
len += r->headers_out.status_line.len;
#if (NGX_SUPPRESS_WARN)
status = NGX_INVALID_ARRAY_INDEX;
#endif
} else {
if (r->headers_out.status < NGX_HTTP_MOVED_PERMANENTLY) {
/* 2XX */
status = r->headers_out.status - NGX_HTTP_OK;
if (r->headers_out.status == NGX_HTTP_NO_CONTENT) {
r->header_only = 1;
r->headers_out.content_type.len = 0;
r->headers_out.content_type.data = NULL;
r->headers_out.last_modified_time = -1;
r->headers_out.last_modified = NULL;
r->headers_out.content_length = NULL;
r->headers_out.content_length_n = -1;
}
} else if (r->headers_out.status < NGX_HTTP_BAD_REQUEST) {
/* 3XX */
status = r->headers_out.status - NGX_HTTP_MOVED_PERMANENTLY
+ NGX_HTTP_LEVEL_200;
if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) {
r->header_only = 1;
}
} else if (r->headers_out.status < NGX_HTTP_INTERNAL_SERVER_ERROR) {
/* 4XX */
status = r->headers_out.status - NGX_HTTP_BAD_REQUEST
+ NGX_HTTP_LEVEL_200
+ NGX_HTTP_LEVEL_300;
} else {
/* 5XX */
status = r->headers_out.status - NGX_HTTP_INTERNAL_SERVER_ERROR
+ NGX_HTTP_LEVEL_200
+ NGX_HTTP_LEVEL_300
+ NGX_HTTP_LEVEL_400;
}
len += ngx_http_status_lines[status].len;
}
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (r->headers_out.server == NULL) {
len += clcf->server_tokens ? sizeof(ngx_http_server_full_string) - 1:
sizeof(ngx_http_server_string) - 1;
}
if (r->headers_out.date == NULL) {
len += sizeof("Date: Mon, 28 Sep 1970 06:00:00 GMT" CRLF) - 1;
}
if (r->headers_out.content_type.len) {
len += sizeof("Content-Type: ") - 1
+ r->headers_out.content_type.len + 2;
if (r->headers_out.content_type_len == r->headers_out.content_type.len
&& r->headers_out.charset.len)
{
len += sizeof("; charset=") - 1 + r->headers_out.charset.len;
}
}
if (r->headers_out.content_length == NULL
&& r->headers_out.content_length_n >= 0)
{
len += sizeof("Content-Length: ") - 1 + NGX_OFF_T_LEN + 2;
}
if (r->headers_out.last_modified == NULL
&& r->headers_out.last_modified_time != -1)
{
len += sizeof("Last-Modified: Mon, 28 Sep 1970 06:00:00 GMT" CRLF) - 1;
}
if (r->headers_out.location
&& r->headers_out.location->value.len
&& r->headers_out.location->value.data[0] == '/')
{
r->headers_out.location->hash = 0;
if (clcf->server_name_in_redirect) {
cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
host = cscf->server_name;
} else if (r->headers_in.server.len) {
host = r->headers_in.server;
} else {
host.data = addr;
if (ngx_http_server_addr(r, &host) != NGX_OK) {
return NGX_ERROR;
}
}
#if (NGX_HTTP_SSL)
if (r->connection->ssl) {
len += sizeof("Location: https://") - 1
+ host.len
+ r->headers_out.location->value.len + 2;
if (clcf->port_in_redirect && r->port != 443) {
len += r->port_text->len;
}
} else
#endif
{
len += sizeof("Location: http://") - 1
+ host.len
+ r->headers_out.location->value.len + 2;
if (clcf->port_in_redirect && r->port != 80) {
len += r->port_text->len;
}
}
} else {
host.len = 0;
host.data = NULL;
}
if (r->chunked) {
len += sizeof("Transfer-Encoding: chunked" CRLF) - 1;
}
if (r->keepalive) {
len += sizeof("Connection: keep-alive" CRLF) - 1;
/*
* MSIE and Opera ignore the "Keep-Alive: timeout=<N>" header.
* MSIE keeps the connection alive for about 60-65 seconds.
* Opera keeps the connection alive very long.
* Mozilla keeps the connection alive for N plus about 1-10 seconds.
* Konqueror keeps the connection alive for about N seconds.
*/
if (clcf->keepalive_header) {
len += sizeof("Keep-Alive: timeout=") - 1 + NGX_TIME_T_LEN + 2;
}
} else {
len += sizeof("Connection: closed" CRLF) - 1;
}
#if (NGX_HTTP_GZIP)
if (r->gzip && clcf->gzip_vary) {
len += sizeof("Vary: Accept-Encoding" CRLF) - 1;
}
#endif
part = &r->headers_out.headers.part;
header = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
if (header[i].hash == 0) {
continue;
}
len += header[i].key.len + sizeof(": ") - 1 + header[i].value.len
+ sizeof(CRLF) - 1;
}
b = ngx_create_temp_buf(r->pool, len);
if (b == NULL) {
return NGX_ERROR;
}
/* "HTTP/1.x " */
b->last = ngx_cpymem(b->last, "HTTP/1.1 ", sizeof("HTTP/1.x ") - 1);
/* status line */
if (r->headers_out.status_line.len) {
b->last = ngx_copy(b->last, r->headers_out.status_line.data,
r->headers_out.status_line.len);
} else {
b->last = ngx_copy(b->last, ngx_http_status_lines[status].data,
ngx_http_status_lines[status].len);
}
*b->last++ = CR; *b->last++ = LF;
if (r->headers_out.server == NULL) {
if (clcf->server_tokens) {
p = (u_char *) ngx_http_server_full_string;
len = sizeof(ngx_http_server_full_string) - 1;
} else {
p = (u_char *) ngx_http_server_string;
len = sizeof(ngx_http_server_string) - 1;
}
b->last = ngx_cpymem(b->last, p, len);
}
if (r->headers_out.date == NULL) {
b->last = ngx_cpymem(b->last, "Date: ", sizeof("Date: ") - 1);
b->last = ngx_cpymem(b->last, ngx_cached_http_time.data,
ngx_cached_http_time.len);
*b->last++ = CR; *b->last++ = LF;
}
if (r->headers_out.content_type.len) {
b->last = ngx_cpymem(b->last, "Content-Type: ",
sizeof("Content-Type: ") - 1);
p = b->last;
b->last = ngx_copy(b->last, r->headers_out.content_type.data,
r->headers_out.content_type.len);
if (r->headers_out.content_type_len == r->headers_out.content_type.len
&& r->headers_out.charset.len)
{
b->last = ngx_cpymem(b->last, "; charset=",
sizeof("; charset=") - 1);
b->last = ngx_copy(b->last, r->headers_out.charset.data,
r->headers_out.charset.len);
/* update r->headers_out.content_type for possible logging */
r->headers_out.content_type.len = b->last - p;
r->headers_out.content_type.data = p;
}
*b->last++ = CR; *b->last++ = LF;
}
if (r->headers_out.content_length == NULL
&& r->headers_out.content_length_n >= 0)
{
b->last = ngx_sprintf(b->last, "Content-Length: %O" CRLF,
r->headers_out.content_length_n);
}
if (r->headers_out.last_modified == NULL
&& r->headers_out.last_modified_time != -1)
{
b->last = ngx_cpymem(b->last, "Last-Modified: ",
sizeof("Last-Modified: ") - 1);
b->last = ngx_http_time(b->last, r->headers_out.last_modified_time);
*b->last++ = CR; *b->last++ = LF;
}
if (host.data) {
p = b->last + sizeof("Location: ") - 1;
b->last = ngx_cpymem(b->last, "Location: http",
sizeof("Location: http") - 1);
#if (NGX_HTTP_SSL)
if (r->connection->ssl) {
*b->last++ ='s';
}
#endif
*b->last++ = ':'; *b->last++ = '/'; *b->last++ = '/';
b->last = ngx_copy(b->last, host.data, host.len);
if (clcf->port_in_redirect) {
#if (NGX_HTTP_SSL)
if (r->connection->ssl) {
if (r->port != 443) {
b->last = ngx_copy(b->last, r->port_text->data,
r->port_text->len);
}
} else
#endif
{
if (r->port != 80) {
b->last = ngx_copy(b->last, r->port_text->data,
r->port_text->len);
}
}
}
b->last = ngx_copy(b->last, r->headers_out.location->value.data,
r->headers_out.location->value.len);
/* update r->headers_out.location->value for possible logging */
r->headers_out.location->value.len = b->last - p;
r->headers_out.location->value.data = p;
r->headers_out.location->key.len = sizeof("Location: ") - 1;
r->headers_out.location->key.data = (u_char *) "Location: ";
*b->last++ = CR; *b->last++ = LF;
}
if (r->chunked) {
b->last = ngx_cpymem(b->last, "Transfer-Encoding: chunked" CRLF,
sizeof("Transfer-Encoding: chunked" CRLF) - 1);
}
if (r->keepalive) {
b->last = ngx_cpymem(b->last, "Connection: keep-alive" CRLF,
sizeof("Connection: keep-alive" CRLF) - 1);
if (clcf->keepalive_header) {
b->last = ngx_sprintf(b->last, "Keep-Alive: timeout=%T" CRLF,
clcf->keepalive_header);
}
} else {
b->last = ngx_cpymem(b->last, "Connection: close" CRLF,
sizeof("Connection: close" CRLF) - 1);
}
#if (NGX_HTTP_GZIP)
if (r->gzip && clcf->gzip_vary) {
b->last = ngx_cpymem(b->last, "Vary: Accept-Encoding" CRLF,
sizeof("Vary: Accept-Encoding" CRLF) - 1);
}
#endif
part = &r->headers_out.headers.part;
header = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
if (header[i].hash == 0) {
continue;
}
b->last = ngx_copy(b->last, header[i].key.data, header[i].key.len);
*b->last++ = ':'; *b->last++ = ' ';
b->last = ngx_copy(b->last, header[i].value.data, header[i].value.len);
*b->last++ = CR; *b->last++ = LF;
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"%*s\n", (size_t) (b->last - b->pos), b->pos);
/* the end of HTTP header */
*b->last++ = CR; *b->last++ = LF;
r->header_size = b->last - b->pos;
if (r->header_only) {
b->last_buf = 1;
}
out.buf = b;
out.next = NULL;
return ngx_http_write_filter(r, &out);
}
