diff options
Diffstat (limited to 'source4/web_server/web_server.c')
| -rw-r--r-- | source4/web_server/web_server.c | 133 |
1 files changed, 100 insertions, 33 deletions
diff --git a/source4/web_server/web_server.c b/source4/web_server/web_server.c index ac83a3384d..d741992770 100644 --- a/source4/web_server/web_server.c +++ b/source4/web_server/web_server.c @@ -4,6 +4,7 @@ web server startup Copyright (C) Andrew Tridgell 2005 + Copyright (C) Jelmer Vernooij 2008 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 @@ -29,6 +30,7 @@ #include "system/network.h" #include "lib/socket/netif.h" #include "lib/tls/tls.h" +#include "lib/util/dlinklist.h" #include "param/param.h" /* don't allow connections to hang around forever */ @@ -39,9 +41,6 @@ */ static int websrv_destructor(struct websrv_context *web) { - if (web->output.fd != -1) { - close(web->output.fd); - } return 0; } @@ -62,10 +61,90 @@ static void websrv_timeout(struct event_context *event_context, } /* + setup for a raw http level error +*/ +void http_error(struct websrv_context *web, const char *status, const char *info) +{ + char *s; + s = talloc_asprintf(web,"<HTML><HEAD><TITLE>Error %s</TITLE></HEAD><BODY><H1>Error %s</H1><pre>%s</pre><p></BODY></HTML>\r\n\r\n", + status, status, info); + if (s == NULL) { + stream_terminate_connection(web->conn, "http_error: out of memory"); + return; + } + websrv_output_headers(web, status, NULL); + websrv_output(web, s, strlen(s)); +} + +void websrv_output_headers(struct websrv_context *web, const char *status, struct http_header *headers) +{ + char *s; + DATA_BLOB b; + struct http_header *hdr; + + s = talloc_asprintf(web, "HTTP/1.0 %s\r\n", status); + if (s == NULL) return; + for (hdr = headers; hdr; hdr = hdr->next) { + s = talloc_asprintf_append_buffer(s, "%s: %s\r\n", hdr->name, hdr->value); + } + + s = talloc_asprintf_append_buffer(s, "\r\n"); + + b = web->output.content; + web->output.content = data_blob_string_const(s); + websrv_output(web, b.data, b.length); + data_blob_free(&b); +} + +void websrv_output(struct websrv_context *web, void *data, size_t length) +{ + data_blob_append(web, &web->output.content, data, length); + EVENT_FD_NOT_READABLE(web->conn->event.fde); + EVENT_FD_WRITEABLE(web->conn->event.fde); + web->output.output_pending = true; +} + + +/* + parse one line of header input +*/ +NTSTATUS http_parse_header(struct websrv_context *web, const char *line) +{ + if (line[0] == 0) { + web->input.end_of_headers = true; + } else if (strncasecmp(line,"GET ", 4)==0) { + web->input.url = talloc_strndup(web, &line[4], strcspn(&line[4], " \t")); + } else if (strncasecmp(line,"POST ", 5)==0) { + web->input.post_request = true; + web->input.url = talloc_strndup(web, &line[5], strcspn(&line[5], " \t")); + } else if (strchr(line, ':') == NULL) { + http_error(web, "400 Bad request", "This server only accepts GET and POST requests"); + return NT_STATUS_INVALID_PARAMETER; + } else if (strncasecmp(line, "Content-Length: ", 16)==0) { + web->input.content_length = strtoul(&line[16], NULL, 10); + } else { + struct http_header *hdr = talloc_zero(web, struct http_header); + char *colon = strchr(line, ':'); + if (colon == NULL) { + http_error(web, "500 Internal Server Error", "invalidly formatted header"); + return NT_STATUS_INVALID_PARAMETER; + } + + hdr->name = talloc_strndup(hdr, line, colon-line); + hdr->value = talloc_strdup(hdr, colon+1); + DLIST_ADD(web->input.headers, hdr); + } + + /* ignore all other headers for now */ + return NT_STATUS_OK; +} + +/* called when a web connection becomes readable */ static void websrv_recv(struct stream_connection *conn, uint16_t flags) { + struct web_server_data *wdata; struct websrv_context *web = talloc_get_type(conn->private, struct websrv_context); NTSTATUS status; @@ -123,7 +202,9 @@ static void websrv_recv(struct stream_connection *conn, uint16_t flags) destroy the stack variables being used by that rendering process when we handle the timeout. */ if (!talloc_reference(web->task, web)) goto failed; - http_process_input(web); + wdata = talloc_get_type(web->task->private, struct web_server_data); + if (wdata == NULL) goto failed; + wdata->http_process_input(wdata, web); talloc_unlink(web->task, web); } return; @@ -133,6 +214,7 @@ failed: } + /* called when a web connection becomes writable */ @@ -159,29 +241,7 @@ static void websrv_send(struct stream_connection *conn, uint16_t flags) web->output.nsent += nsent; - /* possibly read some more raw data from a file */ - if (web->output.content.length == web->output.nsent && - web->output.fd != -1) { - uint8_t buf[2048]; - ssize_t nread; - - data_blob_free(&web->output.content); - web->output.nsent = 0; - - nread = read(web->output.fd, buf, sizeof(buf)); - if (nread == -1 && errno == EINTR) { - return; - } - if (nread <= 0) { - close(web->output.fd); - web->output.fd = -1; - nread = 0; - } - web->output.content = data_blob_talloc(web, buf, nread); - } - - if (web->output.content.length == web->output.nsent && - web->output.fd == -1) { + if (web->output.content.length == web->output.nsent) { stream_terminate_connection(web->conn, "websrv_send: finished sending"); } } @@ -192,7 +252,7 @@ static void websrv_send(struct stream_connection *conn, uint16_t flags) static void websrv_accept(struct stream_connection *conn) { struct task_server *task = talloc_get_type(conn->private, struct task_server); - struct esp_data *edata = talloc_get_type(task->private, struct esp_data); + struct web_server_data *wdata = talloc_get_type(task->private, struct web_server_data); struct websrv_context *web; struct socket_context *tls_socket; @@ -202,7 +262,6 @@ static void websrv_accept(struct stream_connection *conn) web->task = task; web->conn = conn; conn->private = web; - web->output.fd = -1; talloc_set_destructor(web, websrv_destructor); event_add_timed(conn->event.ctx, web, @@ -210,7 +269,7 @@ static void websrv_accept(struct stream_connection *conn) websrv_timeout, web); /* Overwrite the socket with a (possibly) TLS socket */ - tls_socket = tls_init_server(edata->tls_params, conn->socket, + tls_socket = tls_init_server(wdata->tls_params, conn->socket, conn->event.fde, "GPHO"); /* We might not have TLS, or it might not have initilised */ if (tls_socket) { @@ -243,11 +302,12 @@ static void websrv_task_init(struct task_server *task) NTSTATUS status; uint16_t port = lp_web_port(task->lp_ctx); const struct model_ops *model_ops; + struct web_server_data *wdata; task_server_set_title(task, "task[websrv]"); /* run the web server as a single process */ - model_ops = process_model_byname("single"); + model_ops = process_model_startup(task->event_ctx, "single"); if (!model_ops) goto failed; if (lp_interfaces(task->lp_ctx) && lp_bind_interfaces_only(task->lp_ctx)) { @@ -280,8 +340,15 @@ static void websrv_task_init(struct task_server *task) /* startup the esp processor - unfortunately we can't do this per connection as that wouldn't allow for session variables */ - status = http_setup_esp(task); - if (!NT_STATUS_IS_OK(status)) goto failed; + wdata = talloc_zero(task, struct web_server_data); + if (wdata == NULL)goto failed; + + task->private = wdata; + + wdata->tls_params = tls_initialise(wdata, task->lp_ctx); + if (wdata->tls_params == NULL) goto failed; + + if (!wsgi_initialize(wdata)) goto failed; return; |