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[MEDIUM] http: add support for proxy authentication

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We're already able to know if a request is a proxy request or a
normal one, and we have an option "http-use-proxy-header" which states
that proxy headers must be checked. So let's switch to use the proxy
authentication headers and responses when this option is set and we're
facing a proxy request. That allows haproxy to enforce auth in front
of a proxy.
This commit is contained in:
Willy Tarreau 2010-01-31 21:46:18 +01:00
parent 8c8bd4593c
commit 844a7e76d2
2 changed files with 25 additions and 2 deletions
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5
doc/configuration.txt
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@ -2691,6 +2691,11 @@ option http-use-proxy-header
that this option can only be specified in a frontend and will affect the that this option can only be specified in a frontend and will affect the
request along its whole life. request along its whole life.
Also, when this option is set, a request which requires authentication will
automatically switch to use proxy authentication headers if it is itself a
proxied request. That makes it possible to check or enforce authentication in
front of an existing proxy.
This option should normally never be used, except in front of a proxy. This option should normally never be used, except in front of a proxy.
See also : "option httpclose", "option forceclose" and "option See also : "option httpclose", "option forceclose" and "option

22
src/proto_http.c
View File

@ -111,6 +111,15 @@ const char *HTTP_401_fmt =
"\r\n" "\r\n"
"<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n"; "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
const char *HTTP_407_fmt =
"HTTP/1.0 407 Unauthorized\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"Proxy-Authenticate: Basic realm=\"%s\"\r\n"
"\r\n"
"<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
const int http_err_codes[HTTP_ERR_SIZE] = { const int http_err_codes[HTTP_ERR_SIZE] = {
[HTTP_ERR_400] = 400, [HTTP_ERR_400] = 400,
@ -1507,7 +1516,16 @@ get_http_auth(struct session *s)
txn->auth.method = HTTP_AUTH_WRONG; txn->auth.method = HTTP_AUTH_WRONG;
ctx.idx = 0; ctx.idx = 0;
if (!http_find_header("Authorization", txn->req.sol, &txn->hdr_idx, &ctx))
if (txn->flags & TX_USE_PX_CONN) {
h = "Proxy-Authorization";
len = strlen(h);
} else {
h = "Authorization";
len = strlen(h);
}
if (!http_find_header2(h, len, txn->req.sol, &txn->hdr_idx, &ctx))
return 0; return 0;
h = ctx.line + ctx.val; h = ctx.line + ctx.val;
@ -2969,7 +2987,7 @@ int http_process_req_common(struct session *s, struct buffer *req, int an_bit, s
if (!realm) if (!realm)
realm = do_stats?STATS_DEFAULT_REALM:px->id; realm = do_stats?STATS_DEFAULT_REALM:px->id;
sprintf(trash, HTTP_401_fmt, realm); sprintf(trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
chunk_initlen(&msg, trash, sizeof(trash), strlen(trash)); chunk_initlen(&msg, trash, sizeof(trash), strlen(trash));
txn->status = 401; txn->status = 401;
stream_int_retnclose(req->prod, &msg); stream_int_retnclose(req->prod, &msg);