X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/fb6aa8d1be147ccb9f82238f7531bf334ea801f7..02eaa49dd0cc62690c72e28f456326a249325f31:/server/dcgi.c diff --git a/server/dcgi.c b/server/dcgi.c index caaea64..bf6fbe5 100644 --- a/server/dcgi.c +++ b/server/dcgi.c @@ -1,25 +1,3 @@ -/* - * This file is part of DisOrder. - * Copyright (C) 2004, 2005, 2006, 2007 Richard Kettlewell - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - * USA - */ - -#include -#include "types.h" #include #include @@ -38,7 +16,7 @@ #include "mem.h" #include "vector.h" #include "sink.h" -#include "cgi.h" +#include "server-cgi.h" #include "log.h" #include "configuration.h" #include "table.h" @@ -57,15 +35,7 @@ #include "url.h" #include "mime.h" #include "sendmail.h" - -char *login_cookie; - -static void expand(cgi_sink *output, - const char *template, - dcgi_state *ds); -static void expandstring(cgi_sink *output, - const char *string, - dcgi_state *ds); +#include "base64.h" struct entry { const char *path; @@ -73,17 +43,6 @@ struct entry { const char *display; }; -static const char *nonce(void) { - static unsigned long count; - char *s; - - byte_xasprintf(&s, "%lx%lx%lx", - (unsigned long)time(0), - (unsigned long)getpid(), - count++); - return s; -} - static int compare_entry(const void *a, const void *b) { const struct entry *ea = a, *eb = b; @@ -104,32 +63,6 @@ static const char *front_url(void) { return config->url; } -static void header_cookie(struct sink *output) { - struct dynstr d[1]; - struct url u; - - memset(&u, 0, sizeof u); - dynstr_init(d); - parse_url(config->url, &u); - if(login_cookie) { - dynstr_append_string(d, "disorder="); - dynstr_append_string(d, quote822(login_cookie, 0)); - } else { - /* Force browser to discard cookie */ - dynstr_append_string(d, "disorder=none;Max-Age=0"); - } - if(u.path) { - /* The default domain matches the request host, so we need not override - * that. But the default path only goes up to the rightmost /, which would - * cause the browser to expose the cookie to other CGI programs on the same - * web server. */ - dynstr_append_string(d, ";Path="); - dynstr_append_string(d, quote822(u.path, 0)); - } - dynstr_terminate(d); - cgi_header(output, "Set-Cookie", d->vec); -} - static void redirect(struct sink *output) { const char *back; @@ -147,497 +80,8 @@ static void expand_template(dcgi_state *ds, cgi_sink *output, expand(output, action, ds); } -static void lookups(dcgi_state *ds, unsigned want) { - unsigned need; - struct queue_entry *r, *rnext; - const char *dir, *re; - char *rights; - - if(ds->g->client && (need = want ^ (ds->g->flags & want)) != 0) { - if(need & DC_QUEUE) - disorder_queue(ds->g->client, &ds->g->queue); - if(need & DC_PLAYING) - disorder_playing(ds->g->client, &ds->g->playing); - if(need & DC_NEW) - disorder_new_tracks(ds->g->client, &ds->g->new, &ds->g->nnew, 0); - if(need & DC_RECENT) { - /* we need to reverse the order of the list */ - disorder_recent(ds->g->client, &r); - while(r) { - rnext = r->next; - r->next = ds->g->recent; - ds->g->recent = r; - r = rnext; - } - } - if(need & DC_VOLUME) - disorder_get_volume(ds->g->client, - &ds->g->volume_left, &ds->g->volume_right); - if(need & (DC_FILES|DC_DIRS)) { - if(!(dir = cgi_get("directory"))) - dir = ""; - re = cgi_get("regexp"); - if(need & DC_DIRS) - if(disorder_directories(ds->g->client, dir, re, - &ds->g->dirs, &ds->g->ndirs)) - ds->g->ndirs = 0; - if(need & DC_FILES) - if(disorder_files(ds->g->client, dir, re, - &ds->g->files, &ds->g->nfiles)) - ds->g->nfiles = 0; - } - if(need & DC_RIGHTS) { - ds->g->rights = RIGHT_READ; /* fail-safe */ - if(!disorder_userinfo(ds->g->client, disorder_user(ds->g->client), - "rights", &rights)) - parse_rights(rights, &ds->g->rights, 1); - } - ds->g->flags |= need; - } -} - -/* actions ********************************************************************/ - -static void act_disable(cgi_sink *output, - dcgi_state *ds) { - if(ds->g->client) - disorder_disable(ds->g->client); - redirect(output->sink); -} - -static void act_enable(cgi_sink *output, - dcgi_state *ds) { - if(ds->g->client) - disorder_enable(ds->g->client); - redirect(output->sink); -} - -static void act_random_disable(cgi_sink *output, - dcgi_state *ds) { - if(ds->g->client) - disorder_random_disable(ds->g->client); - redirect(output->sink); -} - -static void act_random_enable(cgi_sink *output, - dcgi_state *ds) { - if(ds->g->client) - disorder_random_enable(ds->g->client); - redirect(output->sink); -} - -static void act_remove(cgi_sink *output, - dcgi_state *ds) { - const char *id; - - if(!(id = cgi_get("id"))) fatal(0, "missing id argument"); - if(ds->g->client) - disorder_remove(ds->g->client, id); - redirect(output->sink); -} - -static void act_move(cgi_sink *output, - dcgi_state *ds) { - const char *id, *delta; - - if(!(id = cgi_get("id"))) fatal(0, "missing id argument"); - if(!(delta = cgi_get("delta"))) fatal(0, "missing delta argument"); - if(ds->g->client) - disorder_move(ds->g->client, id, atoi(delta)); - redirect(output->sink); -} - -static void act_scratch(cgi_sink *output, - dcgi_state *ds) { - if(ds->g->client) - disorder_scratch(ds->g->client, cgi_get("id")); - redirect(output->sink); -} - -static void act_playing(cgi_sink *output, dcgi_state *ds) { - char r[1024]; - long refresh = config->refresh, length; - time_t now, fin; - int random_enabled = 0; - int enabled = 0; - - lookups(ds, DC_PLAYING|DC_QUEUE); - cgi_header(output->sink, "Content-Type", "text/html"); - disorder_random_enabled(ds->g->client, &random_enabled); - disorder_enabled(ds->g->client, &enabled); - if(ds->g->playing - && ds->g->playing->state == playing_started /* i.e. not paused */ - && !disorder_length(ds->g->client, ds->g->playing->track, &length) - && length - && ds->g->playing->sofar >= 0) { - /* Try to put the next refresh at the start of the next track. */ - time(&now); - fin = now + length - ds->g->playing->sofar + config->gap; - if(now + refresh > fin) - refresh = fin - now; - } - if(ds->g->queue && ds->g->queue->state == playing_isscratch) { - /* next track is a scratch, don't leave more than the inter-track gap */ - if(refresh > config->gap) - refresh = config->gap; - } - if(!ds->g->playing && ((ds->g->queue - && ds->g->queue->state != playing_random) - || random_enabled) && enabled) { - /* no track playing but playing is enabled and there is something coming - * up, must be in a gap */ - if(refresh > config->gap) - refresh = config->gap; - } - byte_snprintf(r, sizeof r, "%ld;url=%s", refresh > 0 ? refresh : 1, - front_url()); - cgi_header(output->sink, "Refresh", r); - header_cookie(output->sink); - cgi_body(output->sink); - expand(output, "playing", ds); -} - -static void act_play(cgi_sink *output, - dcgi_state *ds) { - const char *track, *dir; - char **tracks; - int ntracks, n; - struct entry *e; - - if((track = cgi_get("file"))) { - disorder_play(ds->g->client, track); - } else if((dir = cgi_get("directory"))) { - if(disorder_files(ds->g->client, dir, 0, &tracks, &ntracks)) ntracks = 0; - if(ntracks) { - e = xmalloc(ntracks * sizeof (struct entry)); - for(n = 0; n < ntracks; ++n) { - e[n].path = tracks[n]; - e[n].sort = trackname_transform("track", tracks[n], "sort"); - e[n].display = trackname_transform("track", tracks[n], "display"); - } - qsort(e, ntracks, sizeof (struct entry), compare_entry); - for(n = 0; n < ntracks; ++n) - disorder_play(ds->g->client, e[n].path); - } - } - /* XXX error handling */ - redirect(output->sink); -} - -static int clamp(int n, int min, int max) { - if(n < min) - return min; - if(n > max) - return max; - return n; -} - -static const char *volume_url(void) { - char *url; - - byte_xasprintf(&url, "%s?action=volume", config->url); - return url; -} - -static void act_volume(cgi_sink *output, dcgi_state *ds) { - const char *l, *r, *d, *back; - int nd, changed = 0;; - - if((d = cgi_get("delta"))) { - lookups(ds, DC_VOLUME); - nd = clamp(atoi(d), -255, 255); - disorder_set_volume(ds->g->client, - clamp(ds->g->volume_left + nd, 0, 255), - clamp(ds->g->volume_right + nd, 0, 255)); - changed = 1; - } else if((l = cgi_get("left")) && (r = cgi_get("right"))) { - disorder_set_volume(ds->g->client, atoi(l), atoi(r)); - changed = 1; - } - if(changed) { - /* redirect back to ourselves (but without the volume-changing bits in the - * URL) */ - cgi_header(output->sink, "Location", - (back = cgi_get("back")) ? back : volume_url()); - header_cookie(output->sink); - cgi_body(output->sink); - } else { - cgi_header(output->sink, "Content-Type", "text/html"); - header_cookie(output->sink); - cgi_body(output->sink); - expand(output, "volume", ds); - } -} - -static void act_prefs_errors(const char *msg, - void attribute((unused)) *u) { - fatal(0, "error splitting parts list: %s", msg); -} - -static const char *numbered_arg(const char *argname, int numfile) { - char *fullname; - - byte_xasprintf(&fullname, "%d_%s", numfile, argname); - return cgi_get(fullname); -} - -static void process_prefs(dcgi_state *ds, int numfile) { - const char *file, *name, *value, *part, *parts, *current, *context; - char **partslist; - - if(!(file = numbered_arg("file", numfile))) - /* The first file doesn't need numbering. */ - if(numfile > 0 || !(file = cgi_get("file"))) - return; - if((parts = numbered_arg("parts", numfile)) - || (parts = cgi_get("parts"))) { - /* Default context is display. Other contexts not actually tested. */ - if(!(context = numbered_arg("context", numfile))) context = "display"; - partslist = split(parts, 0, 0, act_prefs_errors, 0); - while((part = *partslist++)) { - if(!(value = numbered_arg(part, numfile))) - continue; - /* If it's already right (whether regexps or db) don't change anything, - * so we don't fill the database up with rubbish. */ - if(disorder_part(ds->g->client, (char **)¤t, - file, context, part)) - fatal(0, "disorder_part() failed"); - if(!strcmp(current, value)) - continue; - byte_xasprintf((char **)&name, "trackname_%s_%s", context, part); - disorder_set(ds->g->client, file, name, value); - } - if((value = numbered_arg("random", numfile))) - disorder_unset(ds->g->client, file, "pick_at_random"); - else - disorder_set(ds->g->client, file, "pick_at_random", "0"); - if((value = numbered_arg("tags", numfile))) - disorder_set(ds->g->client, file, "tags", value); - } else if((name = cgi_get("name"))) { - /* Raw preferences. Not well supported in the templates at the moment. */ - value = cgi_get("value"); - if(value) - disorder_set(ds->g->client, file, name, value); - else - disorder_unset(ds->g->client, file, name); - } -} - -static void act_prefs(cgi_sink *output, dcgi_state *ds) { - const char *files; - int nfiles, numfile; - - if((files = cgi_get("files"))) nfiles = atoi(files); - else nfiles = 1; - for(numfile = 0; numfile < nfiles; ++numfile) - process_prefs(ds, numfile); - cgi_header(output->sink, "Content-Type", "text/html"); - header_cookie(output->sink); - cgi_body(output->sink); - expand(output, "prefs", ds); -} - -static void act_pause(cgi_sink *output, - dcgi_state *ds) { - if(ds->g->client) - disorder_pause(ds->g->client); - redirect(output->sink); -} - -static void act_resume(cgi_sink *output, - dcgi_state *ds) { - if(ds->g->client) - disorder_resume(ds->g->client); - redirect(output->sink); -} - -static void act_login(cgi_sink *output, - dcgi_state *ds) { - const char *username, *password, *back; - disorder_client *c; - - username = cgi_get("username"); - password = cgi_get("password"); - if(!username || !password - || !strcmp(username, "guest")/*bodge to avoid guest cookies*/) { - /* We're just visiting the login page */ - expand_template(ds, output, "login"); - return; - } - /* We'll need a new connection as we are going to stop being guest */ - c = disorder_new(0); - if(disorder_connect_user(c, username, password)) { - cgi_set_option("error", "loginfailed"); - expand_template(ds, output, "login"); - return; - } - if(disorder_make_cookie(c, &login_cookie)) { - cgi_set_option("error", "cookiefailed"); - expand_template(ds, output, "login"); - return; - } - /* Use the new connection henceforth */ - ds->g->client = c; - ds->g->flags = 0; - /* We have a new cookie */ - header_cookie(output->sink); - cgi_set_option("status", "loginok"); - if((back = cgi_get("back")) && *back) - /* Redirect back to somewhere or other */ - redirect(output->sink); - else - /* Stick to the login page */ - expand_template(ds, output, "login"); -} - -static void act_logout(cgi_sink *output, - dcgi_state *ds) { - disorder_revoke(ds->g->client); - login_cookie = 0; - /* Reconnect as guest */ - disorder_cgi_login(ds, output); - /* Back to the login page */ - cgi_set_option("status", "logoutok"); - expand_template(ds, output, "login"); -} - -static void act_register(cgi_sink *output, - dcgi_state *ds) { - const char *username, *password, *email; - char *confirm, *content_type; - const char *text, *encoding, *charset; - - username = cgi_get("username"); - password = cgi_get("password"); - email = cgi_get("email"); - - if(!username || !*username) { - cgi_set_option("error", "nousername"); - expand_template(ds, output, "login"); - return; - } - if(!password || !*password) { - cgi_set_option("error", "nopassword"); - expand_template(ds, output, "login"); - return; - } - if(!email || !*email) { - cgi_set_option("error", "noemail"); - expand_template(ds, output, "login"); - return; - } - /* We could well do better address validation but for now we'll just do the - * minimum */ - if(!strchr(email, '@')) { - cgi_set_option("error", "bademail"); - expand_template(ds, output, "login"); - return; - } - if(disorder_register(ds->g->client, username, password, email, &confirm)) { - cgi_set_option("error", "cannotregister"); - expand_template(ds, output, "login"); - return; - } - /* Send the user a mail */ - /* TODO templatize this */ - byte_xasprintf((char **)&text, - "Welcome to DisOrder. To active your login, please visit this URL:\n" - "\n" - "%s?c=%s\n", config->url, urlencodestring(confirm)); - if(!(text = mime_encode_text(text, &charset, &encoding))) - fatal(0, "cannot encode email"); - byte_xasprintf(&content_type, "text/plain;charset=%s", - quote822(charset, 0)); - sendmail("", config->mail_sender, email, "Welcome to DisOrder", - encoding, content_type, text); /* TODO error checking */ - /* We'll go back to the login page with a suitable message */ - cgi_set_option("status", "registered"); - expand_template(ds, output, "login"); -} - -static void act_confirm(cgi_sink *output, - dcgi_state *ds) { - const char *confirmation; - - if(!(confirmation = cgi_get("c"))) { - cgi_set_option("error", "noconfirm"); - expand_template(ds, output, "login"); - } - if(disorder_confirm(ds->g->client, confirmation)) { - cgi_set_option("error", "badconfirm"); - expand_template(ds, output, "login"); - } - cgi_set_option("status", "confirmed"); - expand_template(ds, output, "login"); -} - -static const struct action { - const char *name; - void (*handler)(cgi_sink *output, dcgi_state *ds); -} actions[] = { - { "confirm", act_confirm }, - { "disable", act_disable }, - { "enable", act_enable }, - { "login", act_login }, - { "logout", act_logout }, - { "move", act_move }, - { "pause", act_pause }, - { "play", act_play }, - { "playing", act_playing }, - { "prefs", act_prefs }, - { "random-disable", act_random_disable }, - { "random-enable", act_random_enable }, - { "register", act_register }, - { "remove", act_remove }, - { "resume", act_resume }, - { "scratch", act_scratch }, - { "volume", act_volume }, -}; - /* expansions *****************************************************************/ -static void exp_include(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - expand(output, args[0], u); -} - -static void exp_server_version(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - const char *v; - - if(ds->g->client) { - if(disorder_version(ds->g->client, (char **)&v)) v = "(cannot get version)"; - } else - v = "(server not running)"; - cgi_output(output, "%s", v); -} - -static void exp_version(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void attribute((unused)) *u) { - cgi_output(output, "%s", disorder_short_version_string); -} - -static void exp_nonce(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void attribute((unused)) *u) { - cgi_output(output, "%s", nonce()); -} - -static void exp_label(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void attribute((unused)) *u) { - cgi_output(output, "%s", cgi_label(args[0])); -} - struct trackinfo_state { dcgi_state *ds; const struct queue_entry *q; @@ -645,197 +89,6 @@ struct trackinfo_state { time_t when; }; -static void exp_who(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - if(ds->track && ds->track->submitter) - cgi_output(output, "%s", ds->track->submitter); -} - -static void exp_length(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - long length = 0; - - if(ds->track - && (ds->track->state == playing_started - || ds->track->state == playing_paused) - && ds->track->sofar >= 0) - cgi_output(output, "%ld:%02ld/", - ds->track->sofar / 60, ds->track->sofar % 60); - length = 0; - if(ds->track) - disorder_length(ds->g->client, ds->track->track, &length); - else if(ds->tracks) - disorder_length(ds->g->client, ds->tracks[0], &length); - if(length) - cgi_output(output, "%ld:%02ld", length / 60, length % 60); - else - sink_printf(output->sink, "%s", " "); -} - -static void exp_when(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - const struct tm *w = 0; - - if(ds->track) - switch(ds->track->state) { - case playing_isscratch: - case playing_unplayed: - case playing_random: - if(ds->track->expected) - w = localtime(&ds->track->expected); - break; - case playing_failed: - case playing_no_player: - case playing_ok: - case playing_scratched: - case playing_started: - case playing_paused: - case playing_quitting: - if(ds->track->played) - w = localtime(&ds->track->played); - break; - } - if(w) - cgi_output(output, "%d:%02d", w->tm_hour, w->tm_min); - else - sink_printf(output->sink, " "); -} - -static void exp_part(int nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - const char *s, *track, *part, *context; - - if(nargs == 3) - track = args[2]; - else { - if(ds->track) - track = ds->track->track; - else if(ds->tracks) - track = ds->tracks[0]; - else - track = 0; - } - if(track) { - switch(nargs) { - case 1: - context = "display"; - part = args[0]; - break; - case 2: - case 3: - context = args[0]; - part = args[1]; - break; - default: - abort(); - } - if(disorder_part(ds->g->client, (char **)&s, track, - !strcmp(context, "short") ? "display" : context, part)) - fatal(0, "disorder_part() failed"); - if(!strcmp(context, "short")) - s = truncate_for_display(s, config->short_display); - cgi_output(output, "%s", s); - } else - sink_printf(output->sink, " "); -} - -static void exp_playing(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - dcgi_state s; - - lookups(ds, DC_PLAYING); - memset(&s, 0, sizeof s); - s.g = ds->g; - if(ds->g->playing) { - s.track = ds->g->playing; - expandstring(output, args[0], &s); - } -} - -static void exp_queue(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - dcgi_state s; - struct queue_entry *q; - - lookups(ds, DC_QUEUE); - memset(&s, 0, sizeof s); - s.g = ds->g; - s.first = 1; - for(q = ds->g->queue; q; q = q->next) { - s.last = !q->next; - s.track = q; - expandstring(output, args[0], &s); - s.index++; - s.first = 0; - } -} - -static void exp_recent(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - dcgi_state s; - struct queue_entry *q; - - lookups(ds, DC_RECENT); - memset(&s, 0, sizeof s); - s.g = ds->g; - s.first = 1; - for(q = ds->g->recent; q; q = q->next) { - s.last = !q; - s.track = q; - expandstring(output, args[0], &s); - s.index++; - s.first = 0; - } -} - -static void exp_new(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - dcgi_state s; - - lookups(ds, DC_NEW); - memset(&s, 0, sizeof s); - s.g = ds->g; - s.first = 1; - for(s.index = 0; s.index < ds->g->nnew; ++s.index) { - s.last = s.index + 1 < ds->g->nnew; - s.tracks = &ds->g->new[s.index]; - expandstring(output, args[0], &s); - s.first = 0; - } -} - -static void exp_url(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void attribute((unused)) *u) { - cgi_output(output, "%s", config->url); -} - struct result { char *track; const char *sort; @@ -850,83 +103,6 @@ static int compare_result(const void *a, const void *b) { return c; } -static void exp_search(int nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u, substate; - char **tracks; - const char *q, *context, *part, *template; - int ntracks, n, m; - struct result *r; - - switch(nargs) { - case 2: - part = args[0]; - context = "sort"; - template = args[1]; - break; - case 3: - part = args[0]; - context = args[1]; - template = args[2]; - break; - default: - assert(!"should never happen"); - part = context = template = 0; /* quieten compiler */ - } - if(ds->tracks == 0) { - /* we are the top level, let's get some search results */ - if(!(q = cgi_get("query"))) return; /* no results yet */ - if(disorder_search(ds->g->client, q, &tracks, &ntracks)) return; - if(!ntracks) return; - } else { - tracks = ds->tracks; - ntracks = ds->ntracks; - } - assert(ntracks != 0); - /* sort tracks by the appropriate part */ - r = xmalloc(ntracks * sizeof *r); - for(n = 0; n < ntracks; ++n) { - r[n].track = tracks[n]; - if(disorder_part(ds->g->client, (char **)&r[n].sort, - tracks[n], context, part)) - fatal(0, "disorder_part() failed"); - } - qsort(r, ntracks, sizeof (struct result), compare_result); - /* expand the 2nd arg once for each group. We re-use the passed-in tracks - * array as we know it's guaranteed to be big enough and isn't going to be - * used for anything else any more. */ - memset(&substate, 0, sizeof substate); - substate.g = ds->g; - substate.first = 1; - n = 0; - while(n < ntracks) { - substate.tracks = tracks; - substate.ntracks = 0; - m = n; - while(m < ntracks - && !strcmp(r[m].sort, r[n].sort)) - tracks[substate.ntracks++] = r[m++].track; - substate.last = (m == ntracks); - expandstring(output, template, &substate); - substate.index++; - substate.first = 0; - n = m; - } - assert(substate.last != 0); -} - -static void exp_arg(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void attribute((unused)) *u) { - const char *v; - - if((v = cgi_get(args[0]))) - cgi_output(output, "%s", v); -} - static void exp_stats(int attribute((unused)) nargs, char attribute((unused)) **args, cgi_sink *output, @@ -942,60 +118,6 @@ static void exp_stats(int attribute((unused)) nargs, cgi_closetag(output->sink, "pre"); } -static void exp_volume(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - lookups(ds, DC_VOLUME); - if(!strcmp(args[0], "left")) - cgi_output(output, "%d", ds->g->volume_left); - else - cgi_output(output, "%d", ds->g->volume_right); -} - -static void exp_shell(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void attribute((unused)) *u) { - int w, p[2], n; - char buffer[4096]; - pid_t pid; - - xpipe(p); - if(!(pid = xfork())) { - exitfn = _exit; - xclose(p[0]); - xdup2(p[1], 1); - xclose(p[1]); - execlp("sh", "sh", "-c", args[0], (char *)0); - fatal(errno, "error executing sh"); - } - xclose(p[1]); - while((n = read(p[0], buffer, sizeof buffer))) { - if(n < 0) { - if(errno == EINTR) continue; - else fatal(errno, "error reading from pipe"); - } - output->sink->write(output->sink, buffer, n); - } - xclose(p[0]); - while((n = waitpid(pid, &w, 0)) < 0 && errno == EINTR) - ; - if(n < 0) fatal(errno, "error calling waitpid"); - if(w) - error(0, "shell command '%s' %s", args[0], wstat(w)); -} - -static inline int str2bool(const char *s) { - return !strcmp(s, "true"); -} - -static inline const char *bool2str(int n) { - return n ? "true" : "false"; -} - static char *expandarg(const char *arg, dcgi_state *ds) { struct dynstr d; cgi_sink output; @@ -1008,317 +130,6 @@ static char *expandarg(const char *arg, dcgi_state *ds) { return d.vec; } -static void exp_prefs(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - dcgi_state substate; - struct kvp *k; - const char *file = expandarg(args[0], ds); - - memset(&substate, 0, sizeof substate); - substate.g = ds->g; - substate.first = 1; - if(disorder_prefs(ds->g->client, file, &k)) return; - while(k) { - substate.last = !k->next; - substate.pref = k; - expandstring(output, args[1], &substate); - ++substate.index; - k = k->next; - substate.first = 0; - } -} - -static void exp_pref(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - char *value; - dcgi_state *ds = u; - - if(!disorder_get(ds->g->client, args[0], args[1], &value)) - cgi_output(output, "%s", value); -} - -static void exp_if(int nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - int n = str2bool(expandarg(args[0], ds)) ? 1 : 2; - - if(n < nargs) - expandstring(output, args[n], ds); -} - -static void exp_and(int nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - int n, result = 1; - - for(n = 0; n < nargs; ++n) - if(!str2bool(expandarg(args[n], ds))) { - result = 0; - break; - } - sink_printf(output->sink, "%s", bool2str(result)); -} - -static void exp_or(int nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - int n, result = 0; - - for(n = 0; n < nargs; ++n) - if(str2bool(expandarg(args[n], ds))) { - result = 1; - break; - } - sink_printf(output->sink, "%s", bool2str(result)); -} - -static void exp_not(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void attribute((unused)) *u) { - sink_printf(output->sink, "%s", bool2str(!str2bool(args[0]))); -} - -static void exp_isplaying(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - lookups(ds, DC_PLAYING); - sink_printf(output->sink, "%s", bool2str(!!ds->g->playing)); -} - -static void exp_isqueue(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - lookups(ds, DC_QUEUE); - sink_printf(output->sink, "%s", bool2str(!!ds->g->queue)); -} - -static void exp_isrecent(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - lookups(ds, DC_RECENT); - sink_printf(output->sink, "%s", bool2str(!!ds->g->recent)); -} - -static void exp_isnew(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - lookups(ds, DC_NEW); - sink_printf(output->sink, "%s", bool2str(!!ds->g->nnew)); -} - -static void exp_id(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - if(ds->track) - cgi_output(output, "%s", ds->track->id); -} - -static void exp_track(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - if(ds->track) - cgi_output(output, "%s", ds->track->track); -} - -static void exp_parity(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - cgi_output(output, "%s", ds->index % 2 ? "odd" : "even"); -} - -static void exp_comment(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink attribute((unused)) *output, - void attribute((unused)) *u) { - /* do nothing */ -} - -static void exp_prefname(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - if(ds->pref && ds->pref->name) - cgi_output(output, "%s", ds->pref->name); -} - -static void exp_prefvalue(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - if(ds->pref && ds->pref->value) - cgi_output(output, "%s", ds->pref->value); -} - -static void exp_isfiles(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - lookups(ds, DC_FILES); - sink_printf(output->sink, "%s", bool2str(!!ds->g->nfiles)); -} - -static void exp_isdirectories(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - lookups(ds, DC_DIRS); - sink_printf(output->sink, "%s", bool2str(!!ds->g->ndirs)); -} - -static void exp_choose(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - dcgi_state substate; - int nfiles, n; - char **files; - struct entry *e; - const char *type, *what = expandarg(args[0], ds); - - if(!strcmp(what, "files")) { - lookups(ds, DC_FILES); - files = ds->g->files; - nfiles = ds->g->nfiles; - type = "track"; - } else if(!strcmp(what, "directories")) { - lookups(ds, DC_DIRS); - files = ds->g->dirs; - nfiles = ds->g->ndirs; - type = "dir"; - } else { - error(0, "unknown @choose@ argument '%s'", what); - return; - } - e = xmalloc(nfiles * sizeof (struct entry)); - for(n = 0; n < nfiles; ++n) { - e[n].path = files[n]; - e[n].sort = trackname_transform(type, files[n], "sort"); - e[n].display = trackname_transform(type, files[n], "display"); - } - qsort(e, nfiles, sizeof (struct entry), compare_entry); - memset(&substate, 0, sizeof substate); - substate.g = ds->g; - substate.first = 1; - for(n = 0; n < nfiles; ++n) { - substate.last = (n == nfiles - 1); - substate.index = n; - substate.entry = &e[n]; - expandstring(output, args[1], &substate); - substate.first = 0; - } -} - -static void exp_file(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - if(ds->entry) - cgi_output(output, "%s", ds->entry->path); - else if(ds->track) - cgi_output(output, "%s", ds->track->track); - else if(ds->tracks) - cgi_output(output, "%s", ds->tracks[0]); -} - -static void exp_transform(int nargs, - char **args, - cgi_sink *output, - void attribute((unused)) *u) { - const char *context = nargs > 2 ? args[2] : "display"; - - cgi_output(output, "%s", trackname_transform(args[1], args[0], context)); -} - -static void exp_urlquote(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void attribute((unused)) *u) { - cgi_output(output, "%s", urlencodestring(args[0])); -} - -static void exp_scratchable(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void attribute((unused)) *u) { - dcgi_state *ds = u; - - lookups(ds, DC_PLAYING|DC_RIGHTS); - sink_printf(output->sink, "%s", - bool2str(right_scratchable(ds->g->rights, - disorder_user(ds->g->client), - ds->g->playing))); -} - -static void exp_removable(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void attribute((unused)) *u) { - dcgi_state *ds = u; - - lookups(ds, DC_RIGHTS); - sink_printf(output->sink, "%s", - bool2str(right_removable(ds->g->rights, - disorder_user(ds->g->client), - ds->track))); -} - -static void exp_movable(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void attribute((unused)) *u) { - dcgi_state *ds = u; - - lookups(ds, DC_RIGHTS); - sink_printf(output->sink, "%s", - bool2str(right_movable(ds->g->rights, - disorder_user(ds->g->client), - ds->track))); -} - static void exp_navigate(int attribute((unused)) nargs, char **args, cgi_sink *output, @@ -1358,391 +169,6 @@ static void exp_fullname(int attribute((unused)) nargs, cgi_output(output, "%.*s", ds->nav_len, ds->nav_path); } -static void exp_basename(int nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - const char *s; - - if(nargs) { - if((s = strrchr(args[0], '/'))) ++s; - else s = args[0]; - cgi_output(output, "%s", s); - } else - cgi_output(output, "%.*s", ds->nav_len - ds->nav_dirlen - 1, - ds->nav_path + ds->nav_dirlen + 1); -} - -static void exp_dirname(int nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - const char *s; - - if(nargs) { - if((s = strrchr(args[0], '/'))) - cgi_output(output, "%.*s", (int)(s - args[0]), args[0]); - } else - cgi_output(output, "%.*s", ds->nav_dirlen, ds->nav_path); -} - -static void exp_eq(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void attribute((unused)) *u) { - cgi_output(output, "%s", bool2str(!strcmp(args[0], args[1]))); -} - -static void exp_ne(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void attribute((unused)) *u) { - cgi_output(output, "%s", bool2str(strcmp(args[0], args[1]))); -} - -static void exp_enabled(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - int enabled = 0; - - if(ds->g->client) - disorder_enabled(ds->g->client, &enabled); - cgi_output(output, "%s", bool2str(enabled)); -} - -static void exp_random_enabled(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - int enabled = 0; - - if(ds->g->client) - disorder_random_enabled(ds->g->client, &enabled); - cgi_output(output, "%s", bool2str(enabled)); -} - -static void exp_trackstate(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - struct queue_entry *q; - char *track; - - if(disorder_resolve(ds->g->client, &track, args[0])) return; - lookups(ds, DC_QUEUE|DC_PLAYING); - if(ds->g->playing && !strcmp(ds->g->playing->track, track)) - cgi_output(output, "playing"); - else { - for(q = ds->g->queue; q && strcmp(q->track, track); q = q->next) - ; - if(q) - cgi_output(output, "queued"); - } -} - -static void exp_thisurl(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void attribute((unused)) *u) { - kvp_set(&cgi_args, "nonce", nonce()); /* nonces had better differ! */ - cgi_output(output, "%s?%s", config->url, kvp_urlencode(cgi_args, 0)); -} - -static void exp_isfirst(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - sink_printf(output->sink, "%s", bool2str(!!ds->first)); -} - -static void exp_islast(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - sink_printf(output->sink, "%s", bool2str(!!ds->last)); -} - -static void exp_action(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void attribute((unused)) *u) { - const char *action = cgi_get("action"), *mgmt; - - if(!action) action = "playing"; - if(!strcmp(action, "playing") - && (mgmt = cgi_get("mgmt")) - && !strcmp(mgmt, "true")) - action = "manage"; - sink_printf(output->sink, "%s", action); -} - -static void exp_resolve(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void attribute((unused)) *u) { - dcgi_state *ds = u; - char *track; - - if(!disorder_resolve(ds->g->client, &track, args[0])) - sink_printf(output->sink, "%s", track); -} - -static void exp_paused(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - int paused = 0; - - lookups(ds, DC_PLAYING); - if(ds->g->playing && ds->g->playing->state == playing_paused) - paused = 1; - cgi_output(output, "%s", bool2str(paused)); -} - -static void exp_state(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - if(ds->track) - cgi_output(output, "%s", playing_states[ds->track->state]); -} - -static void exp_files(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - dcgi_state substate; - const char *nfiles_arg, *directory; - int nfiles, numfile; - struct kvp *k; - - memset(&substate, 0, sizeof substate); - substate.g = ds->g; - if((directory = cgi_get("directory"))) { - /* Prefs for whole directory. */ - lookups(ds, DC_FILES); - /* Synthesize args for the file list. */ - nfiles = ds->g->nfiles; - for(numfile = 0; numfile < nfiles; ++numfile) { - k = xmalloc(sizeof *k); - byte_xasprintf((char **)&k->name, "%d_file", numfile); - k->value = ds->g->files[numfile]; - k->next = cgi_args; - cgi_args = k; - } - } else { - /* Args already present. */ - if((nfiles_arg = cgi_get("files"))) nfiles = atoi(nfiles_arg); - else nfiles = 1; - } - for(numfile = 0; numfile < nfiles; ++numfile) { - substate.index = numfile; - expandstring(output, args[0], &substate); - } -} - -static void exp_index(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - - cgi_output(output, "%d", ds->index); -} - -static void exp_nfiles(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *ds = u; - const char *files_arg; - - if(cgi_get("directory")) { - lookups(ds, DC_FILES); - cgi_output(output, "%d", ds->g->nfiles); - } else if((files_arg = cgi_get("files"))) - cgi_output(output, "%s", files_arg); - else - cgi_output(output, "1"); -} - -static void exp_user(int attribute((unused)) nargs, - char attribute((unused)) **args, - cgi_sink *output, - void *u) { - dcgi_state *const ds = u; - - cgi_output(output, "%s", disorder_user(ds->g->client)); -} - -static void exp_right(int attribute((unused)) nargs, - char **args, - cgi_sink *output, - void *u) { - dcgi_state *const ds = u; - const char *right = expandarg(args[0], ds); - rights_type r; - - lookups(ds, DC_RIGHTS); - if(parse_rights(right, &r, 1/*report*/)) - r = 0; - if(args[1] == 0) - cgi_output(output, "%s", bool2str(!!(r & ds->g->rights))); - else if(r & ds->g->rights) - expandstring(output, args[1], ds); - else if(args[2]) - expandstring(output, args[2], ds); -} - -static const struct cgi_expansion expansions[] = { - { "#", 0, INT_MAX, EXP_MAGIC, exp_comment }, - { "action", 0, 0, 0, exp_action }, - { "and", 0, INT_MAX, EXP_MAGIC, exp_and }, - { "arg", 1, 1, 0, exp_arg }, - { "basename", 0, 1, 0, exp_basename }, - { "choose", 2, 2, EXP_MAGIC, exp_choose }, - { "dirname", 0, 1, 0, exp_dirname }, - { "enabled", 0, 0, 0, exp_enabled }, - { "eq", 2, 2, 0, exp_eq }, - { "file", 0, 0, 0, exp_file }, - { "files", 1, 1, EXP_MAGIC, exp_files }, - { "fullname", 0, 0, 0, exp_fullname }, - { "id", 0, 0, 0, exp_id }, - { "if", 2, 3, EXP_MAGIC, exp_if }, - { "include", 1, 1, 0, exp_include }, - { "index", 0, 0, 0, exp_index }, - { "isdirectories", 0, 0, 0, exp_isdirectories }, - { "isfiles", 0, 0, 0, exp_isfiles }, - { "isfirst", 0, 0, 0, exp_isfirst }, - { "islast", 0, 0, 0, exp_islast }, - { "isnew", 0, 0, 0, exp_isnew }, - { "isplaying", 0, 0, 0, exp_isplaying }, - { "isqueue", 0, 0, 0, exp_isqueue }, - { "isrecent", 0, 0, 0, exp_isrecent }, - { "label", 1, 1, 0, exp_label }, - { "length", 0, 0, 0, exp_length }, - { "movable", 0, 0, 0, exp_movable }, - { "navigate", 2, 2, EXP_MAGIC, exp_navigate }, - { "ne", 2, 2, 0, exp_ne }, - { "new", 1, 1, EXP_MAGIC, exp_new }, - { "nfiles", 0, 0, 0, exp_nfiles }, - { "nonce", 0, 0, 0, exp_nonce }, - { "not", 1, 1, 0, exp_not }, - { "or", 0, INT_MAX, EXP_MAGIC, exp_or }, - { "parity", 0, 0, 0, exp_parity }, - { "part", 1, 3, 0, exp_part }, - { "paused", 0, 0, 0, exp_paused }, - { "playing", 1, 1, EXP_MAGIC, exp_playing }, - { "pref", 2, 2, 0, exp_pref }, - { "prefname", 0, 0, 0, exp_prefname }, - { "prefs", 2, 2, EXP_MAGIC, exp_prefs }, - { "prefvalue", 0, 0, 0, exp_prefvalue }, - { "queue", 1, 1, EXP_MAGIC, exp_queue }, - { "random-enabled", 0, 0, 0, exp_random_enabled }, - { "recent", 1, 1, EXP_MAGIC, exp_recent }, - { "removable", 0, 0, 0, exp_removable }, - { "resolve", 1, 1, 0, exp_resolve }, - { "right", 1, 3, EXP_MAGIC, exp_right }, - { "scratchable", 0, 0, 0, exp_scratchable }, - { "search", 2, 3, EXP_MAGIC, exp_search }, - { "server-version", 0, 0, 0, exp_server_version }, - { "shell", 1, 1, 0, exp_shell }, - { "state", 0, 0, 0, exp_state }, - { "stats", 0, 0, 0, exp_stats }, - { "thisurl", 0, 0, 0, exp_thisurl }, - { "track", 0, 0, 0, exp_track }, - { "trackstate", 1, 1, 0, exp_trackstate }, - { "transform", 2, 3, 0, exp_transform }, - { "url", 0, 0, 0, exp_url }, - { "urlquote", 1, 1, 0, exp_urlquote }, - { "user", 0, 0, 0, exp_user }, - { "version", 0, 0, 0, exp_version }, - { "volume", 1, 1, 0, exp_volume }, - { "when", 0, 0, 0, exp_when }, - { "who", 0, 0, 0, exp_who } -}; - -static void expand(cgi_sink *output, - const char *template, - dcgi_state *ds) { - cgi_expand(template, - expansions, sizeof expansions / sizeof *expansions, - output, - ds); -} - -static void expandstring(cgi_sink *output, - const char *string, - dcgi_state *ds) { - cgi_expand_string("", - string, - expansions, sizeof expansions / sizeof *expansions, - output, - ds); -} - -static void perform_action(cgi_sink *output, dcgi_state *ds, - const char *action) { - int n; - - /* We don't ever want anything to be cached */ - cgi_header(output->sink, "Cache-Control", "no-cache"); - if((n = TABLE_FIND(actions, struct action, name, action)) >= 0) - actions[n].handler(output, ds); - else - expand_template(ds, output, action); -} - -void disorder_cgi(cgi_sink *output, dcgi_state *ds) { - const char *action = cgi_get("action"); - - if(!action) { - /* We allow URLs which are just confirm=... in order to keep confirmation - * URLs, which are user-facing, as short as possible. */ - if(cgi_get("c")) - action = "confirm"; - else - action = "playing"; - } - perform_action(output, ds, action); -} - -void disorder_cgi_error(cgi_sink *output, dcgi_state *ds, - const char *msg) { - cgi_set_option("error", msg); - perform_action(output, ds, "error"); -} - -/** @brief Log in as the current user or guest if none */ -void disorder_cgi_login(dcgi_state *ds, cgi_sink *output) { - /* Create a new connection */ - ds->g->client = disorder_new(0); - /* Forget everything we knew */ - ds->g->flags = 0; - /* Reconnect */ - if(disorder_connect_cookie(ds->g->client, login_cookie)) { - disorder_cgi_error(output, ds, "connect"); - exit(0); - } - /* If there was a cookie but it went bad, we forget it */ - if(login_cookie && !strcmp(disorder_user(ds->g->client), "guest")) - login_cookie = 0; -} - /* Local Variables: c-basic-offset:2