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reqs.c
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1758 lines (1521 loc) · 60.4 KB
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/* tinyproxy - A fast light-weight HTTP proxy
* Copyright (C) 1998 Steven Young <[email protected]>
* Copyright (C) 1999-2005 Robert James Kaes <[email protected]>
* Copyright (C) 2000 Chris Lightfoot <[email protected]>
* Copyright (C) 2002 Petr Lampa <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* This is where all the work in tinyproxy is actually done. Incoming
* connections have a new child created for them. The child then
* processes the headers from the client, the response from the server,
* and then relays the bytes between the two.
*/
#include "main.h"
#include "acl.h"
#include "anonymous.h"
#include "buffer.h"
#include "conns.h"
#include "filter.h"
#include "hsearch.h"
#include "pseudomap.h"
#include "heap.h"
#include "html-error.h"
#include "log.h"
#include "network.h"
#include "reqs.h"
#include "sock.h"
#include "stats.h"
#include "text.h"
#include "utils.h"
#include "sblist.h"
#include "reverse-proxy.h"
#include "transparent-proxy.h"
#include "upstream.h"
#include "connect-ports.h"
#include "conf.h"
#include "basicauth.h"
#include "loop.h"
#include "mypoll.h"
/*
* Maximum length of a HTTP line
*/
#define HTTP_LINE_LENGTH (MAXBUFFSIZE / 6)
/*
* Macro to help test if the Upstream proxy supported is compiled in and
* enabled.
*/
#ifdef UPSTREAM_SUPPORT
# define UPSTREAM_CONFIGURED() (config->upstream_list != NULL)
# define UPSTREAM_HOST(host) upstream_get(host, config->upstream_list)
# define UPSTREAM_IS_HTTP(conn) (conn->upstream_proxy != NULL && conn->upstream_proxy->type == PT_HTTP)
#else
# define UPSTREAM_CONFIGURED() (0)
# define UPSTREAM_HOST(host) (NULL)
# define UPSTREAM_IS_HTTP(up) (0)
#endif
/*
* Codify the test for the carriage return and new line characters.
*/
#define CHECK_CRLF(header, len) \
(((len) == 1 && header[0] == '\n') || \
((len) == 2 && header[0] == '\r' && header[1] == '\n'))
/*
* Codify the test for header fields folded over multiple lines.
*/
#define CHECK_LWS(header, len) \
((len) > 0 && (header[0] == ' ' || header[0] == '\t'))
/*
* Read in the first line from the client (the request line for HTTP
* connections. The request line is allocated from the heap, but it must
* be freed in another function.
*/
static int read_request_line (struct conn_s *connptr)
{
ssize_t len;
retry:
len = readline (connptr->client_fd, &connptr->request_line);
if (len <= 0) {
log_message (LOG_ERR,
"read_request_line: Client (file descriptor: %d) "
"closed socket before read.", connptr->client_fd);
return -1;
}
/*
* Strip the new line and carriage return from the string.
*/
if (chomp (connptr->request_line, len) == len) {
/*
* If the number of characters removed is the same as the
* length then it was a blank line. Free the buffer and
* try again (since we're looking for a request line.)
*/
safefree (connptr->request_line);
goto retry;
}
log_message (LOG_CONN, "Request (file descriptor %d): %s",
connptr->client_fd, connptr->request_line);
return 0;
}
/*
* Free all the memory allocated in a request.
*/
static void free_request_struct (struct request_s *request)
{
if (!request)
return;
safefree (request->method);
safefree (request->protocol);
if (request->host)
safefree (request->host);
if (request->path)
safefree (request->path);
safefree (request);
}
/*
* Take a host string and if there is a username/password part, strip
* it off.
*/
static void strip_username_password (char *host)
{
char *p;
assert (host);
assert (strlen (host) > 0);
if ((p = strchr (host, '@')) == NULL)
return;
/*
* Move the pointer past the "@" and then copy from that point
* until the NUL to the beginning of the host buffer.
*/
p++;
while (*p)
*host++ = *p++;
*host = '\0';
}
/*
* Take a host string and if there is a port part, strip
* it off and set proper port variable i.e. for www.host.com:8001
*/
static int strip_return_port (char *host)
{
char *ptr1;
char *ptr2;
unsigned port;
ptr1 = strrchr (host, ':');
if (ptr1 == NULL)
return 0;
/* Check for IPv6 style literals */
ptr2 = strchr (ptr1, ']');
if (ptr2 != NULL)
return 0;
*ptr1++ = '\0';
port = atoi(ptr1);
/* check that port string is in the valid range 1-0xffff) */
if(strlen(ptr1) > 5 || (port & 0xffff0000)) return 0;
return port;
}
/*
* Pull the information out of the URL line.
* This expects urls with the initial '<proto>://'
* part stripped and hence can handle http urls,
* (proxied) ftp:// urls and https-requests that
* come in without the proto:// part via CONNECT.
*/
static int extract_url (const char *url, int default_port,
struct request_s *request)
{
char *p;
int port;
/* Split the URL on the slash to separate host from path */
p = strchr (url, '/');
if (p != NULL) {
int len;
len = p - url;
request->host = (char *) safemalloc (len + 1);
memcpy (request->host, url, len);
request->host[len] = '\0';
request->path = safestrdup (p);
} else {
request->host = safestrdup (url);
request->path = safestrdup ("/");
}
if (!request->host || !request->path)
goto ERROR_EXIT;
/* Remove the username/password if they're present */
strip_username_password (request->host);
/* Find a proper port in www.site.com:8001 URLs */
port = strip_return_port (request->host);
request->port = (port != 0) ? port : default_port;
/* Remove any surrounding '[' and ']' from IPv6 literals */
p = strrchr (request->host, ']');
if (p && (*(request->host) == '[')) {
memmove(request->host, request->host + 1,
strlen(request->host) - 2);
*p = '\0';
p--;
*p = '\0';
}
return 0;
ERROR_EXIT:
if (request->host)
safefree (request->host);
if (request->path)
safefree (request->path);
return -1;
}
/*
* Create a connection for HTTP connections.
*/
static int
establish_http_connection (struct conn_s *connptr, struct request_s *request)
{
char portbuff[7];
char dst[sizeof(struct in6_addr)];
/* Build a port string if it's not a standard port */
if (request->port != HTTP_PORT && request->port != HTTP_PORT_SSL)
snprintf (portbuff, 7, ":%u", request->port);
else
portbuff[0] = '\0';
if (inet_pton(AF_INET6, request->host, dst) > 0) {
/* host is an IPv6 address literal, so surround it with
* [] */
return write_message (connptr->server_fd,
"%s %s HTTP/1.%u\r\n"
"Host: [%s]%s\r\n"
"Connection: close\r\n",
request->method, request->path,
connptr->protocol.major != 1 ? 0 :
connptr->protocol.minor,
request->host, portbuff);
} else if (connptr->upstream_proxy &&
connptr->upstream_proxy->type == PT_HTTP &&
connptr->upstream_proxy->ua.authstr) {
return write_message (connptr->server_fd,
"%s %s HTTP/1.%u\r\n"
"Host: %s%s\r\n"
"Connection: close\r\n"
"Proxy-Authorization: Basic %s\r\n",
request->method, request->path,
connptr->protocol.major != 1 ? 0 :
connptr->protocol.minor,
request->host, portbuff,
connptr->upstream_proxy->ua.authstr);
} else {
return write_message (connptr->server_fd,
"%s %s HTTP/1.%u\r\n"
"Host: %s%s\r\n"
"Connection: close\r\n",
request->method, request->path,
connptr->protocol.major != 1 ? 0 :
connptr->protocol.minor,
request->host, portbuff);
}
}
/*
* Send the appropriate response to the client to establish a
* connection via CONNECT method.
*/
static int send_connect_method_response (struct conn_s *connptr)
{
return write_message (connptr->client_fd,
"HTTP/1.%u 200 Connection established\r\n"
"Proxy-agent: " PACKAGE "\r\n"
"\r\n", connptr->protocol.major != 1 ? 0 :
connptr->protocol.minor);
}
/* determine whether a hostname with optional trailing colon/port is the
stathost */
static int is_stathost (const char* host)
{
const char *p = config->stathost;
const char *q = host;
if (!p || !q) return 0;
while (*p && *(p++) == *(q++));
return *p == 0 && (*q == 0 || *q == ':');
}
/*
* Break the request line apart and figure out where to connect and
* build a new request line. Finally connect to the remote server.
*/
static struct request_s *process_request (struct conn_s *connptr,
pseudomap *hashofheaders)
{
char *url;
struct request_s *request;
int ret, skip_trans;
size_t request_len;
skip_trans = 0;
/* NULL out all the fields so frees don't cause segfaults. */
request =
(struct request_s *) safecalloc (1, sizeof (struct request_s));
if (!request)
return NULL;
request_len = strlen (connptr->request_line) + 1;
request->method = (char *) safemalloc (request_len);
url = (char *) safemalloc (request_len);
request->protocol = (char *) safemalloc (request_len);
if (!request->method || !url || !request->protocol) {
goto fail;
}
/* zero-terminate the strings so they don't contain junk in error page */
request->method[0] = url[0] = request->protocol[0] = 0;
ret = sscanf (connptr->request_line, "%[^ ] %[^ ] %[^ ]",
request->method, url, request->protocol);
if (ret == 2 && !strcasecmp (request->method, "GET")) {
request->protocol[0] = 0;
/* Indicate that this is a HTTP/0.9 GET request */
connptr->protocol.major = 0;
connptr->protocol.minor = 9;
} else if (ret == 3 && !strncasecmp (request->protocol, "HTTP/", 5)) {
/*
* Break apart the protocol and update the connection
* structure.
*/
ret = sscanf (request->protocol + 5, "%u.%u",
&connptr->protocol.major,
&connptr->protocol.minor);
/*
* If the conversion doesn't succeed, drop down below and
* send the error to the user.
*/
if (ret != 2)
goto BAD_REQUEST_ERROR;
} else {
BAD_REQUEST_ERROR:
log_message (LOG_ERR,
"process_request: Bad Request on file descriptor %d",
connptr->client_fd);
indicate_http_error (connptr, 400, "Bad Request",
"detail", "Request has an invalid format",
"url", url, NULL);
goto fail;
}
/*
* Check to see if they're requesting the stat host
*/
if (is_stathost (pseudomap_find (hashofheaders, "host"))) {
got_stathost:
log_message (LOG_NOTICE, "Request for the stathost.");
connptr->show_stats = TRUE;
goto fail;
}
#ifdef REVERSE_SUPPORT
if (config->reversepath_list != NULL) {
/*
* Rewrite the URL based on the reverse path. After calling
* reverse_rewrite_url "url" can be freed since we either
* have the newly rewritten URL, or something failed and
* we'll be closing anyway.
*/
char *reverse_url;
int reverse_status;
reverse_url = reverse_rewrite_url (connptr, hashofheaders, url, &reverse_status);
if (reverse_url != NULL) {
if (reverse_status == 301) {
char buf[PATH_MAX];
snprintf (buf, sizeof buf, "Location: %s\r\n", reverse_url);
send_http_headers (connptr, 301, "Moved Permanently", buf);
goto fail;
}
safefree (url);
url = reverse_url;
skip_trans = 1;
} else if (config->reverseonly) {
log_message (LOG_ERR,
"Bad request, no mapping for '%s' found",
url);
indicate_http_error (connptr, 400, "Bad Request",
"detail", "No mapping found for "
"requested url", "url", url, NULL);
goto fail;
}
}
#endif
if (strncasecmp (url, "http://", 7) == 0
|| (UPSTREAM_CONFIGURED () && strncasecmp (url, "ftp://", 6) == 0))
{
char *skipped_type = strstr (url, "//") + 2;
if (extract_url (skipped_type, HTTP_PORT, request) < 0) {
indicate_http_error (connptr, 400, "Bad Request",
"detail", "Could not parse URL",
"url", url, NULL);
goto fail;
}
} else if (strcmp (request->method, "CONNECT") == 0) {
if (extract_url (url, HTTP_PORT_SSL, request) < 0) {
indicate_http_error (connptr, 400, "Bad Request",
"detail", "Could not parse URL",
"url", url, NULL);
goto fail;
}
/* Verify that the port in the CONNECT method is allowed */
if (!check_allowed_connect_ports (request->port,
config->connect_ports))
{
indicate_http_error (connptr, 403, "Access violation",
"detail",
"The CONNECT method not allowed "
"with the port you tried to use.",
"url", url, NULL);
log_message (LOG_INFO,
"Refused CONNECT method on port %d",
request->port);
goto fail;
}
connptr->connect_method = TRUE;
} else {
#ifdef TRANSPARENT_PROXY
if (!skip_trans) {
if (!do_transparent_proxy
(connptr, hashofheaders, request, config, &url))
goto fail;
} else
#endif
{
indicate_http_error (connptr, 501, "Not Implemented",
"detail",
"Unknown method or unsupported protocol.",
"url", url, NULL);
log_message (LOG_INFO, "Unknown method (%s) or protocol (%s)",
request->method, url);
goto fail;
}
}
#ifdef FILTER_ENABLE
/*
* Filter restricted domains/urls
*/
if (config->filter) {
int fu = config->filter_opts & FILTER_OPT_URL;
ret = filter_run (fu ? url : request->host);
if (ret) {
update_stats (STAT_DENIED);
log_message (LOG_NOTICE,
"Proxying refused on filtered %s \"%s\"",
fu ? "url" : "domain",
fu ? url : request->host);
indicate_http_error (connptr, 403, "Filtered",
"detail",
"The request you made has been filtered",
"url", url, NULL);
goto fail;
}
}
#endif
/* check whether hostname from url is the stathost */
if (is_stathost (request->host))
goto got_stathost;
safefree (url);
return request;
fail:
safefree (url);
free_request_struct (request);
return NULL;
}
/*
* pull_client_data is used to pull across any client data (like in a
* POST) which needs to be handled before an error can be reported, or
* server headers can be processed.
* - rjkaes
*/
static int pull_client_data (struct conn_s *connptr, long int length)
{
char *buffer;
ssize_t len;
buffer =
(char *) safemalloc (min (MAXBUFFSIZE, (unsigned long int) length));
if (!buffer)
return -1;
do {
len = safe_read (connptr->client_fd, buffer,
min (MAXBUFFSIZE, (unsigned long int) length));
if (len <= 0)
goto ERROR_EXIT;
if (!connptr->error_variables) {
if (safe_write (connptr->server_fd, buffer, len) < 0)
goto ERROR_EXIT;
}
length -= len;
} while (length > 0);
safefree (buffer);
return 0;
ERROR_EXIT:
safefree (buffer);
return -1;
}
/* pull chunked client data */
static int pull_client_data_chunked (struct conn_s *connptr) {
char *buffer = 0;
ssize_t len;
long chunklen;
while(1) {
if (buffer) safefree(buffer);
len = readline (connptr->client_fd, &buffer);
if (len <= 0)
goto ERROR_EXIT;
if (!connptr->error_variables) {
if (safe_write (connptr->server_fd, buffer, len) < 0)
goto ERROR_EXIT;
}
chunklen = strtol (buffer, (char**)0, 16);
/* prevent negative or huge values causing overflow */
if (chunklen < 0 || chunklen > 0x0fffffff) goto ERROR_EXIT;
if (pull_client_data (connptr, chunklen+2) < 0)
goto ERROR_EXIT;
if(!chunklen) break;
}
safefree (buffer);
return 0;
ERROR_EXIT:
safefree (buffer);
return -1;
}
#ifdef XTINYPROXY_ENABLE
/*
* Add the X-Tinyproxy header to the collection of headers being sent to
* the server.
* -rjkaes
*/
static int add_xtinyproxy_header (struct conn_s *connptr)
{
assert (connptr && connptr->server_fd >= 0);
return write_message (connptr->server_fd,
"X-Tinyproxy: %s\r\n", connptr->client_ip_addr);
}
#endif /* XTINYPROXY */
/*
* Take a complete header line and break it apart (into a key and the data.)
* Now insert this information into the hashmap for the connection so it
* can be retrieved and manipulated later.
*/
static int
add_header_to_connection (pseudomap *hashofheaders, char *header, size_t len)
{
char *sep;
/* Get rid of the new line and return at the end */
len -= chomp (header, len);
sep = strchr (header, ':');
if (!sep)
return 0; /* just skip invalid header, do not give error */
/* Blank out colons, spaces, and tabs. */
while (*sep == ':' || *sep == ' ' || *sep == '\t')
*sep++ = '\0';
/* Calculate the new length of just the data */
len -= sep - header - 1;
return pseudomap_append (hashofheaders, header, sep);
}
/*
* Define maximum number of headers that we accept.
* This should be big enough to handle legitimate cases,
* but limited to avoid DoS.
*/
#define MAX_HEADERS 10000
/*
* Read all the headers from the stream
*/
static int get_all_headers (int fd, pseudomap *hashofheaders)
{
char *line = NULL;
char *header = NULL;
int count;
char *tmp;
ssize_t linelen;
ssize_t len = 0;
unsigned int double_cgi = FALSE; /* boolean */
assert (fd >= 0);
assert (hashofheaders != NULL);
for (count = 0; count < MAX_HEADERS; count++) {
if ((linelen = readline (fd, &line)) <= 0) {
safefree (header);
safefree (line);
return -1;
}
/*
* If we received a CR LF or a non-continuation line, then add
* the accumulated header field, if any, to the hashmap, and
* reset it.
*/
if (CHECK_CRLF (line, linelen) || !CHECK_LWS (line, linelen)) {
if (!double_cgi
&& len > 0
&& add_header_to_connection (hashofheaders, header,
len) < 0) {
safefree (header);
safefree (line);
return -1;
}
len = 0;
}
/*
* If we received just a CR LF on a line, the headers are
* finished.
*/
if (CHECK_CRLF (line, linelen)) {
safefree (header);
safefree (line);
return 0;
}
/*
* BUG FIX: The following code detects a "Double CGI"
* situation so that we can handle the nonconforming system.
* This problem was found when accessing cgi.ebay.com, and it
* turns out to be a wider spread problem as well.
*
* If "Double CGI" is in effect, duplicate headers are
* ignored.
*
* FIXME: Might need to change this to a more robust check.
*/
if (linelen >= 5 && strncasecmp (line, "HTTP/", 5) == 0) {
double_cgi = TRUE;
}
/*
* Append the new line to the current header field.
*/
tmp = (char *) saferealloc (header, len + linelen);
if (tmp == NULL) {
safefree (header);
safefree (line);
return -1;
}
header = tmp;
memcpy (header + len, line, linelen);
len += linelen;
safefree (line);
}
/*
* If we get here, this means we reached MAX_HEADERS count.
* Bail out with error.
*/
safefree (header);
safefree (line);
return -1;
}
/*
* Extract the headers to remove. These headers were listed in the Connection
* and Proxy-Connection headers.
*/
static int remove_connection_headers (pseudomap *hashofheaders)
{
static const char *headers[] = {
"connection",
"proxy-connection"
};
char *data;
char *ptr;
ssize_t len;
int i,j,df;
for (i = 0; i != (sizeof (headers) / sizeof (char *)); ++i) {
/* Look for the connection header. If it's not found, return. */
data = pseudomap_find(hashofheaders, headers[i]);
if (!data)
return 0;
len = strlen(data);
/*
* Go through the data line and replace any special characters
* with a NULL.
*/
ptr = data;
while ((ptr = strpbrk (ptr, "()<>@,;:\\\"/[]?={} \t")))
*ptr++ = '\0';
/*
* All the tokens are separated by NULLs. Now go through the
* token and remove them from the hashofheaders.
*/
ptr = data;
while (ptr < data + len) {
df = 0;
/* check that ptr isn't one of headers to prevent
double-free (CVE-2023-49606) */
for (j = 0; j != (sizeof (headers) / sizeof (char *)); ++j)
if(!strcasecmp(ptr, headers[j])) df = 1;
if (!df) pseudomap_remove (hashofheaders, ptr);
/* Advance ptr to the next token */
ptr += strlen (ptr) + 1;
while (ptr < data + len && *ptr == '\0')
ptr++;
}
/* Now remove the connection header it self. */
pseudomap_remove (hashofheaders, headers[i]);
}
return 0;
}
/*
* If there is a Content-Length header, then return the value; otherwise, return
* -1.
*/
static long get_content_length (pseudomap *hashofheaders)
{
char *data;
long content_length = -1;
data = pseudomap_find (hashofheaders, "content-length");
if (data)
content_length = atol (data);
return content_length;
}
static int is_chunked_transfer (pseudomap *hashofheaders)
{
char *data;
data = pseudomap_find (hashofheaders, "transfer-encoding");
return data ? !strcasecmp (data, "chunked") : 0;
}
/*
* Search for Via header in a hash of headers and either write a new Via
* header, or append our information to the end of an existing Via header.
*
* FIXME: Need to add code to "hide" our internal information for security
* purposes.
*/
static int
write_via_header (int fd, pseudomap *hashofheaders,
unsigned int major, unsigned int minor)
{
char hostname[512];
char *data;
int ret;
if (config->disable_viaheader) {
ret = 0;
goto done;
}
if (config->via_proxy_name) {
strlcpy (hostname, config->via_proxy_name, sizeof (hostname));
} else if (gethostname (hostname, sizeof (hostname)) < 0) {
strlcpy (hostname, "unknown", 512);
}
/*
* See if there is a "Via" header. If so, again we need to do a bit
* of processing.
*/
data = pseudomap_find (hashofheaders, "via");
if (data) {
ret = write_message (fd,
"Via: %s, %hu.%hu %s (%s)\r\n",
data, major, minor, hostname, PACKAGE);
pseudomap_remove (hashofheaders, "via");
} else {
ret = write_message (fd,
"Via: %hu.%hu %s (%s)\r\n",
major, minor, hostname, PACKAGE);
}
done:
return ret;
}
/*
* Here we loop through all the headers the client is sending. If we
* are running in anonymous mode, we will _only_ send the headers listed
* (plus a few which are required for various methods).
* - rjkaes
*/
static int
process_client_headers (struct conn_s *connptr, pseudomap *hashofheaders)
{
static const char *skipheaders[] = {
"host",
"keep-alive",
"proxy-connection",
"te",
"trailers",
"upgrade"
};
int i;
size_t iter;
int ret = 0;
char *data, *header;
/*
* Don't send headers if there's already an error, if the request was
* a stats request, or if this was a CONNECT method (unless upstream
* http proxy is in use.)
*/
if (connptr->server_fd == -1 || connptr->show_stats
|| (connptr->connect_method && ! UPSTREAM_IS_HTTP(connptr))) {
log_message (LOG_INFO,
"Not sending client headers to remote machine");
return 0;
}
/*
* See if there is a "Content-Length" header. If so, again we need
* to do a bit of processing.
*/
connptr->content_length.client = get_content_length (hashofheaders);
/* Check whether client sends chunked data. */
if (connptr->content_length.client == -1 && is_chunked_transfer (hashofheaders))
connptr->content_length.client = -2;
/*
* See if there is a "Connection" header. If so, we need to do a bit
* of processing. :)
*/
remove_connection_headers (hashofheaders);
/*
* Delete the headers listed in the skipheaders list
*/
for (i = 0; i != (sizeof (skipheaders) / sizeof (char *)); i++) {
pseudomap_remove (hashofheaders, skipheaders[i]);
}
/* Send, or add the Via header */
ret = write_via_header (connptr->server_fd, hashofheaders,
connptr->protocol.major,
connptr->protocol.minor);
if (ret < 0) {
indicate_http_error (connptr, 503,
"Could not send data to remote server",
"detail",
"A network error occurred while "
"trying to write data to the remote web server.",
NULL);
goto PULL_CLIENT_DATA;
}
/*
* Output all the remaining headers to the remote machine.
*/
iter = 0;
while((iter = pseudomap_next(hashofheaders, iter, &data, &header))) {
if (!is_anonymous_enabled (config)
|| anonymous_search (config, data) > 0) {
ret =
write_message (connptr->server_fd,
"%s: %s\r\n", data, header);
if (ret < 0) {
indicate_http_error (connptr, 503,
"Could not send data to remote server",
"detail",
"A network error occurred while "
"trying to write data to the "
"remote web server.",
NULL);
goto PULL_CLIENT_DATA;
}
}
}
#if defined(XTINYPROXY_ENABLE)
if (config->add_xtinyproxy)
add_xtinyproxy_header (connptr);
#endif
/* Write the final "blank" line to signify the end of the headers */
if (safe_write (connptr->server_fd, "\r\n", 2) < 0)
return -1;
/*
* Spin here pulling the data from the client.
*/
PULL_CLIENT_DATA:
if (connptr->content_length.client > 0) {
ret = pull_client_data (connptr,
connptr->content_length.client);
} else if (connptr->content_length.client == -2)
ret = pull_client_data_chunked (connptr);
return ret;
}
/*
* Loop through all the headers (including the response code) from the
* server.
*/
static int process_server_headers (struct conn_s *connptr)
{
static const char *skipheaders[] = {