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71cbe86566
This introduces a new way of linking Serval executables and dynamic libraries from static libraries like libservald.a -- called "feature-driven" linking. The Makefile now links servald and serval-tests from libservald.a, rather than from an explicit list of object (.o) files. Thanks to the section-based method for registering functions such as HTTP handlers, CLI commands and MDP handlers, these object files had become "stand-alone" and hence were no longer included in the link because there was no unresolved reference that required them to be linked in. The new "feature.h" provides the DECLARE_FEATURE(name) macro that each stand-alone source file uses to declare the named feature(s) it provides. Each executable can call the USE_FEATURE(name) macro in any of its explicitly-linked source files to cause the corresponding object(s) to be included in the link, eg, servald_features.c. The DEFINE_BINDING() macro has been extended so that every individual MDP binding is given a feature name based on its port number macro, eg, "mdp_binding_MDP_PORT_ECHO". Some features have been factored into their own separate source files so they can be omitted or included in a build independently of each other: - the MDP bindings for MDP_PORT_DNALOOKUP, MDP_PORT_ECHO, MDP_PORT_TRACE, MDP_PORT_KEYMAPREQUEST, MDP_PORT_RHIZOME_xxx, MDP_PORT_PROBE, MDP_PORT_STUN, MDP_PORT_STUNREQ - the CLI "log" and "echo" commands - the CLI "rhizome direct" command The JNI source files are only compiled if the <jni.h> header is present, otherwise they are omitted from libservald.so.
176 lines
5.7 KiB
C
176 lines
5.7 KiB
C
/*
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Serval DNA essential server HTTP pages
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Copyright (C) 2016 Flinders University
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Copyright (C) 2015 Serval Project Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "serval.h"
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#include "httpd.h"
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#include "conf.h"
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#include "overlay_address.h"
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#include "overlay_interface.h"
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#include "os.h"
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#include "route_link.h"
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DEFINE_FEATURE(http_server);
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DECLARE_HANDLER("/", root_page);
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DECLARE_HANDLER("/static/", static_page);
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DECLARE_HANDLER("/interface/", interface_page);
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DECLARE_HANDLER("/neighbour/", neighbour_page);
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DECLARE_HANDLER("/favicon.ico", fav_icon_header);
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static int root_page(httpd_request *r, const char *remainder)
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{
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if (*remainder)
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return 404;
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if (r->http.verb != HTTP_VERB_GET)
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return 405;
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char temp[8192];
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strbuf b = strbuf_local_buf(temp);
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strbuf_sprintf(b, "<html><head><meta http-equiv=\"refresh\" content=\"5\" ></head><body>"
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"<h1>Hello, I'm %s*</h1>",
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alloca_tohex_sid_t_trunc(get_my_subscriber()->sid, 16));
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if (config.server.motd[0]) {
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strbuf_puts(b, "<p>");
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strbuf_html_escape(b, config.server.motd, strlen(config.server.motd));
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strbuf_puts(b, "</p>");
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}
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strbuf_puts(b, "Interfaces;<br />");
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int i;
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for (i=0;i<OVERLAY_MAX_INTERFACES;i++){
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if (overlay_interfaces[i].state==INTERFACE_STATE_UP)
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strbuf_sprintf(b, "<a href=\"/interface/%d\">%d: %s, TX: %d, RX: %d</a><br />",
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i, i, overlay_interfaces[i].name, overlay_interfaces[i].tx_count, overlay_interfaces[i].recv_count);
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}
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strbuf_puts(b, "Neighbours;<br />");
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link_neighbour_short_status_html(b, "/neighbour");
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if (is_rhizome_http_enabled()){
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strbuf_puts(b, "<a href=\"/rhizome/status\">Rhizome Status</a><br />");
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}
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strbuf_puts(b, "</body></html>");
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if (strbuf_overrun(b)) {
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WHY("HTTP Root page buffer overrun");
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return 500;
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}
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http_request_response_static(&r->http, 200, CONTENT_TYPE_HTML, temp, strbuf_len(b));
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return 1;
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}
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static int fav_icon_header(httpd_request *r, const char *remainder)
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{
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if (*remainder)
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return 404;
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http_request_response_static(&r->http, 200, "image/vnd.microsoft.icon", (const char *)favicon_bytes, favicon_len);
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return 1;
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}
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static int neighbour_page(httpd_request *r, const char *remainder)
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{
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if (r->http.verb != HTTP_VERB_GET)
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return 405;
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char buf[8*1024];
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strbuf b = strbuf_local_buf(buf);
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sid_t neighbour_sid;
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if (str_to_sid_t(&neighbour_sid, remainder) == -1)
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return 404;
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struct subscriber *neighbour = find_subscriber(neighbour_sid.binary, sizeof(neighbour_sid.binary), 0);
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if (!neighbour)
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return 404;
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strbuf_puts(b, "<html><head><meta http-equiv=\"refresh\" content=\"5\" ></head><body>");
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link_neighbour_status_html(b, neighbour);
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strbuf_puts(b, "</body></html>");
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if (strbuf_overrun(b))
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return -1;
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http_request_response_static(&r->http, 200, CONTENT_TYPE_HTML, buf, strbuf_len(b));
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return 1;
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}
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static int interface_page(httpd_request *r, const char *remainder)
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{
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if (r->http.verb != HTTP_VERB_GET)
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return 405;
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char buf[8*1024];
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strbuf b=strbuf_local_buf(buf);
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int index=atoi(remainder);
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if (index<0 || index>=OVERLAY_MAX_INTERFACES)
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return 404;
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strbuf_puts(b, "<html><head><meta http-equiv=\"refresh\" content=\"5\" ></head><body>");
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interface_state_html(b, &overlay_interfaces[index]);
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strbuf_puts(b, "</body></html>");
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if (strbuf_overrun(b))
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return -1;
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http_request_response_static(&r->http, 200, CONTENT_TYPE_HTML, buf, strbuf_len(b));
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return 1;
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}
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static int static_file_generator(struct http_request *hr, unsigned char *buf, size_t bufsz, struct http_content_generator_result *result)
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{
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struct httpd_request *r=(struct httpd_request *)hr;
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uint64_t remain = r->http.response.header.content_length + r->http.response.header.content_range_start - r->u.file.offset;
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if (bufsz < remain)
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remain = bufsz;
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ssize_t bytes = read(r->u.file.fd, buf, remain);
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if (bytes == -1)
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return -1;
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r->u.file.offset+=bytes;
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result->generated = bytes;
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return (r->u.file.offset >= r->http.response.header.content_length + r->http.response.header.content_range_start)?0:1;
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}
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static void finalise_union_close_file(httpd_request *r)
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{
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if (r->u.file.fd==-1)
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return;
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close(r->u.file.fd);
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r->u.file.fd=-1;
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}
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static int static_page(httpd_request *r, const char *remainder)
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{
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if (r->http.verb != HTTP_VERB_GET)
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return 405;
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char path[PATH_MAX];
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if (!*remainder)
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remainder="index.html";
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if (FORMF_SERVAL_ETC_PATH(path, "static/%s", remainder)==0)
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return 500;
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struct stat stat;
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if (lstat(path, &stat))
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return 404;
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r->u.file.fd = open(path, O_RDONLY);
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if (r->u.file.fd==-1)
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return 404;
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r->finalise_union=finalise_union_close_file;
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// TODO find extension and set content type properly
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http_response_init_content_range(r, stat.st_size);
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if (r->http.response.header.content_range_start){
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if (lseek64(r->u.file.fd, r->http.response.header.content_range_start, SEEK_SET)){
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WARNF_perror("lseek(%s)", path);
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return 500;
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}
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}
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r->u.file.offset=r->http.response.header.content_range_start;
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http_request_response_generated(&r->http, 200, CONTENT_TYPE_HTML, static_file_generator);
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return 1;
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}
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