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http_admin.c
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http_admin.c
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/* http_admin.c -- Routines for handling Cyrus admin/info requests in httpd
*
* Copyright (c) 1994-2015 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
/*
* TODO:
*/
#include <config.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <ctype.h>
#include <string.h>
#include <syslog.h>
#include <assert.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/types.h>
#include "global.h"
#include "httpd.h"
#include "http_proxy.h"
#include "../master/masterconf.h"
#include "proc.h"
#include "proxy.h"
#include "ptrarray.h"
#include "time.h"
#include "tok.h"
#include "util.h"
#include "version.h"
#include "xmalloc.h"
#include "xstrlcat.h"
#include "xstrlcpy.h"
/* config.c stuff */
const char *MASTER_CONFIG_FILENAME = DEFAULT_MASTER_CONFIG_FILENAME;
/* generated headers are not necessarily in current directory */
#include "imap/http_err.h"
static time_t compile_time;
static void admin_init(struct buf *serverinfo);
static int meth_get(struct transaction_t *txn, void *params);
static int action_murder(struct transaction_t *txn);
static int action_menu(struct transaction_t *txn);
static int action_proc(struct transaction_t *txn);
static int action_df(struct transaction_t *txn);
static int action_conf(struct transaction_t *txn);
/* Namespace for admin service */
struct namespace_t namespace_admin = {
URL_NS_ADMIN, 1, "admin", "/admin", NULL,
http_allow_noauth_get, /*authschemes*/0,
/*mbtype*/0,
ALLOW_READ,
admin_init, NULL, NULL, NULL, NULL, NULL,
{
{ NULL, NULL }, /* ACL */
{ NULL, NULL }, /* BIND */
{ NULL, NULL }, /* COPY */
{ NULL, NULL }, /* DELETE */
{ &meth_get, NULL }, /* GET */
{ &meth_get, NULL }, /* HEAD */
{ NULL, NULL }, /* LOCK */
{ NULL, NULL }, /* MKCALENDAR */
{ NULL, NULL }, /* MKCOL */
{ NULL, NULL }, /* MOVE */
{ &meth_options, NULL }, /* OPTIONS */
{ NULL, NULL }, /* PATCH */
{ NULL, NULL }, /* POST */
{ NULL, NULL }, /* PROPFIND */
{ NULL, NULL }, /* PROPPATCH */
{ NULL, NULL }, /* PUT */
{ NULL, NULL }, /* REPORT */
{ &meth_trace, NULL }, /* TRACE */
{ NULL, NULL }, /* UNBIND */
{ NULL, NULL } /* UNLOCK */
}
};
static void admin_init(struct buf *serverinfo __attribute__((unused)))
{
namespace_admin.enabled = config_httpmodules & IMAP_ENUM_HTTPMODULES_ADMIN;
if (!namespace_admin.enabled) return;
compile_time = calc_compile_time(__TIME__, __DATE__);
}
const struct action_t {
const char *name;
const char *desc;
int (*func)(struct transaction_t *txn);
} actions[] = {
{ "", "Available Admin Functions", &action_menu },
{ "proc", "Currently Running Services", &action_proc },
{ "df", "Spool Partition Disk Usage", &action_df },
{ "conf", "Cyrus Configuration File", &action_conf },
{ NULL, NULL, NULL }
};
/* Perform a GET/HEAD request */
static int meth_get(struct transaction_t *txn,
void *params __attribute__((unused)))
{
struct request_target_t *tgt = &txn->req_tgt;
int (*action)(struct transaction_t *txn) = NULL;
size_t len;
char *p;
int i;
if (!httpd_userid) return HTTP_UNAUTHORIZED;
/* Admins only */
if (!(httpd_userisadmin || httpd_userisproxyadmin)) return HTTP_FORBIDDEN;
/* Make a working copy of target path */
strlcpy(tgt->path, txn->req_uri->path, sizeof(tgt->path));
p = tgt->path;
/* Skip namespace */
p += strlen(namespace_admin.prefix);
if (*p == '/') *p++ = '\0';
/* Check if we're in murder space */
len = strcspn(p, "/");
if (config_mupdate_server && len == 6 && !strncmp(p, "murder", len)) {
p += len;
if (!*p || !*++p) return action_murder(txn);
/* Get backend server */
len = strcspn(p, "/");
tgt->userid = xstrndup(p, len);
p += len;
if (*p == '/') *p++ = '\0';
}
/* Get collection (action) */
tgt->collection = p;
p += strcspn(p, "/");
if (*p == '/') *p++ = '\0';
/* Find the matching action */
for (i = 0; actions[i].name; i++) {
if (!strcmp(tgt->collection, actions[i].name) && !*p) {
action = actions[i].func;
break;
}
}
if (!action) return HTTP_NOT_FOUND;
else if (tgt->userid && !config_getstring(IMAPOPT_PROXYSERVERS)) {
/* Proxy to backend */
struct backend *be;
be = proxy_findserver(tgt->userid,
&http_protocol, httpd_userid,
&backend_cached, NULL, NULL, httpd_in);
if (!be) return HTTP_UNAVAILABLE;
return http_pipe_req_resp(be, txn);
}
else return action(txn);
}
/* Perform a murder action */
static int action_murder(struct transaction_t *txn)
{
int precond;
struct message_guid guid;
const char *etag, *serverlist = config_getstring(IMAPOPT_SERVERLIST);
static time_t lastmod = 0;
unsigned level = 0;
static struct buf resp = BUF_INITIALIZER;
struct stat sbuf;
time_t mtime;
if (!serverlist) {
/* Add HTML header */
buf_reset(&resp);
buf_printf_markup(&resp, level, HTML_DOCTYPE);
buf_printf_markup(&resp, level++, "<html>");
buf_printf_markup(&resp, level++, "<head>");
buf_printf_markup(&resp, level, "<title>%s</title>",
"Available Backend Servers");
buf_printf_markup(&resp, --level, "</head>");
buf_printf_markup(&resp, level++, "<body>");
buf_printf_markup(&resp, level, "<h2>%s</h2>",
"Error: Can not generate a list of backend servers "
"without <tt>serverlist</tt> option being set "
"in <tt>imapd.conf</tt>");
/* Finish HTML */
buf_printf_markup(&resp, --level, "</body>");
buf_printf_markup(&resp, --level, "</html>");
/* Output the HTML response */
txn->resp_body.type = "text/html; charset=utf-8";
write_body(HTTP_UNAVAILABLE, txn, buf_cstring(&resp), buf_len(&resp));
return 0;
}
/* Generate ETag based on compile date/time of this source file,
and the config file size/mtime */
assert(!buf_len(&txn->buf));
stat(config_filename, &sbuf);
buf_printf(&txn->buf, "%ld-%ld-%ld", (long) compile_time,
sbuf.st_mtime, sbuf.st_size);
message_guid_generate(&guid, buf_cstring(&txn->buf), buf_len(&txn->buf));
etag = message_guid_encode(&guid);
mtime = MAX(compile_time, sbuf.st_mtime);
/* Check any preconditions, including range request */
txn->flags.ranges = 1;
precond = check_precond(txn, etag, mtime);
switch (precond) {
case HTTP_OK:
case HTTP_PARTIAL:
case HTTP_NOT_MODIFIED:
/* Fill in Etag, Last-Modified, Expires */
txn->resp_body.etag = etag;
txn->resp_body.lastmod = mtime;
txn->resp_body.maxage = 86400; /* 24 hrs */
txn->flags.cc |= CC_MAXAGE;
if (precond != HTTP_NOT_MODIFIED) break;
GCC_FALLTHROUGH
default:
/* We failed a precondition - don't perform the request */
return precond;
}
if (txn->resp_body.lastmod > lastmod) {
/* Add HTML header */
const char *sep =
txn->req_uri->path[strlen(txn->req_uri->path)-1] == '/' ? "" : "/";
char *server;
tok_t tok;
buf_reset(&resp);
buf_printf_markup(&resp, level, HTML_DOCTYPE);
buf_printf_markup(&resp, level++, "<html>");
buf_printf_markup(&resp, level++, "<head>");
buf_printf_markup(&resp, level, "<title>%s</title>",
"Available Backend Servers");
buf_printf_markup(&resp, --level, "</head>");
buf_printf_markup(&resp, level++, "<body>");
buf_printf_markup(&resp, level, "<h2>%s @ %s</h2>",
"Available Backend Servers", config_servername);
/* Add servers */
tok_init(&tok, serverlist, " \t", TOK_TRIMLEFT|TOK_TRIMRIGHT);
while ((server = tok_next(&tok))) {
buf_printf_markup(&resp, level, "<p><a href=\"%s%s%s\">%s</a>",
txn->req_uri->path, sep, server, server);
}
tok_fini(&tok);
/* Finish HTML */
buf_printf_markup(&resp, --level, "</body>");
buf_printf_markup(&resp, --level, "</html>");
/* Update lastmod */
lastmod = txn->resp_body.lastmod;
}
/* Output the HTML response */
txn->resp_body.type = "text/html; charset=utf-8";
write_body(precond, txn, buf_cstring(&resp), buf_len(&resp));
return 0;
}
/* Perform a menu action */
static int action_menu(struct transaction_t *txn)
{
int precond;
struct message_guid guid;
const char *etag;
static time_t lastmod = 0;
unsigned level = 0, i;
static struct buf resp = BUF_INITIALIZER;
/* Generate ETag based on compile date/time of this source file.
* Extend this to include config file size/mtime if we add run-time options.
*/
assert(!buf_len(&txn->buf));
buf_printf(&txn->buf, "%ld", (long) compile_time);
message_guid_generate(&guid, buf_cstring(&txn->buf), buf_len(&txn->buf));
etag = message_guid_encode(&guid);
/* Check any preconditions, including range request */
txn->flags.ranges = 1;
precond = check_precond(txn, etag, compile_time);
switch (precond) {
case HTTP_OK:
case HTTP_PARTIAL:
case HTTP_NOT_MODIFIED:
/* Fill in Etag, Last-Modified, Expires */
txn->resp_body.etag = etag;
txn->resp_body.lastmod = compile_time;
txn->resp_body.maxage = 86400; /* 24 hrs */
txn->flags.cc |= CC_MAXAGE;
if (precond != HTTP_NOT_MODIFIED) break;
GCC_FALLTHROUGH
default:
/* We failed a precondition - don't perform the request */
return precond;
}
if (txn->resp_body.lastmod > lastmod) {
/* Add HTML header */
const char *sep =
txn->req_uri->path[strlen(txn->req_uri->path)-1] == '/' ? "" : "/";
buf_reset(&resp);
buf_printf_markup(&resp, level, HTML_DOCTYPE);
buf_printf_markup(&resp, level++, "<html>");
buf_printf_markup(&resp, level++, "<head>");
buf_printf_markup(&resp, level, "<title>%s</title>", actions[0].desc);
buf_printf_markup(&resp, --level, "</head>");
buf_printf_markup(&resp, level++, "<body>");
buf_printf_markup(&resp, level, "<h2>%s @ %s</h2>",
actions[0].desc, config_servername);
/* Add actions */
for (i = 1; actions[i].name; i++) {
buf_printf_markup(&resp, level, "<p><a href=\"%s%s%s\">%s</a>",
txn->req_uri->path, sep, actions[i].name,
actions[i].desc);
}
/* Finish HTML */
buf_printf_markup(&resp, --level, "</body>");
buf_printf_markup(&resp, --level, "</html>");
/* Update lastmod */
lastmod = txn->resp_body.lastmod;
}
/* Output the HTML response */
txn->resp_body.type = "text/html; charset=utf-8";
write_body(precond, txn, buf_cstring(&resp), buf_len(&resp));
return 0;
}
struct proc_info {
pid_t pid;
char *servicename;
char *user;
char *host;
char *mailbox;
char *cmdname;
char state;
time_t start;
unsigned long vmsize;
};
typedef struct {
unsigned count;
unsigned alloc;
struct proc_info **data;
} piarray_t;
static int add_procinfo(pid_t pid,
const char *servicename, const char *host,
const char *user, const char *mailbox,
const char *cmdname,
void *rock)
{
piarray_t *piarray = (piarray_t *) rock;
struct proc_info *pinfo;
char procpath[100];
struct stat sbuf;
FILE *f;
snprintf(procpath, sizeof(procpath), "/proc/%d", pid);
if (stat(procpath, &sbuf)) return 0;
if (piarray->count >= piarray->alloc) {
piarray->alloc += 100;
piarray->data = xrealloc(piarray->data,
piarray->alloc * sizeof(struct proc_info *));
}
pinfo = piarray->data[piarray->count++] =
(struct proc_info *) xzmalloc(sizeof(struct proc_info));
pinfo->pid = pid;
pinfo->servicename = xstrdupsafe(servicename);
pinfo->host = xstrdupsafe(host);
pinfo->user = xstrdupsafe(user);
pinfo->mailbox = xstrdupsafe(mailbox);
pinfo->cmdname = xstrdupsafe(cmdname);
strlcat(procpath, "/stat", sizeof(procpath));
f = fopen(procpath, "r");
if (f) {
int d;
long ld;
unsigned u;
unsigned long vmsize = 0, lu;
unsigned long long starttime = 0;
char state = 0, *s = NULL;
int c = fscanf(f, "%d %ms %c " /* 1-3 */
"%d %d %d %d %d %u " /* 4-9 */
"%lu %lu %lu %lu %lu %lu " /* 10-15 */
"%ld %ld %ld %ld %ld %ld " /* 16-21 */
"%llu %lu %ld", /* 22-24 */
&d, &s, &state,
&d, &d, &d, &d, &d, &u,
&lu, &lu, &lu, &lu, &lu, &lu,
&ld, &ld, &ld, &ld, &ld, &ld,
&starttime, &vmsize, &ld);
free(s);
fclose(f);
if (c != EOF) {
pinfo->state = state;
pinfo->vmsize = vmsize;
pinfo->start = starttime/sysconf(_SC_CLK_TCK);
}
}
return 0;
}
#if defined(_GNU_SOURCE) && defined (__GLIBC__) && \
((__GLIBC__ > 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ >=0)))
#define HAVE_GLIBC_QSORT_R
#endif
#if defined(__NEWLIB__) && \
((__NEWLIB__ > 2) || ((__NEWLIB__ == 2) && (__NEWLIB_MINOR__ >= 2)))
#if defined(_GNU_SOURCE)
#define HAVE_GLIBC_QSORT_R
#else
#define HAVE_BSD_QSORT_R
#endif
#endif
#if !defined(HAVE_GLIBC_QSORT_R) && \
(defined(__FreeBSD__) || defined(__DragonFly__) || defined(__APPLE__))
#define HAVE_BSD_QSORT_R
#endif
#ifdef HAVE_BSD_QSORT_R
#define QSORT_R_COMPAR_ARGS(a,b,c) (c,a,b)
#define cyr_qsort_r(base, nmemb, size, compar, thunk) qsort_r(base, nmemb, size, thunk, compar)
#else
#define QSORT_R_COMPAR_ARGS(a,b,c) (a,b,c)
# if defined(HAVE_GLIBC_QSORT_R)
#define cyr_qsort_r(base, nmemb, size, compar, thunk) qsort_r(base, nmemb, size, compar, thunk)
# elif defined(__GNUC__)
static void cyr_qsort_r(void *base, size_t nmemb, size_t size,
int (*compar)(const void *, const void *, void *),
void *thunk)
{
int compar_func(const void *a, const void *b)
{
return compar(a, b, thunk);
}
qsort(base, nmemb, size, compar_func);
}
# else
# error No qsort_r support
# endif
#endif
static int sort_procinfo QSORT_R_COMPAR_ARGS(
const void *pa, const void *pb,
void *k)
{
int r;
const struct proc_info **a = (const struct proc_info**)pa;
const struct proc_info **b = (const struct proc_info**)pb;
char *key = (char*)k;
int rev = islower((int) *key);
switch (toupper((int) *key)) {
default:
case 'P':
r = (*a)->pid - (*b)->pid;
break;
case 'S':
r = strcmp((*a)->servicename, (*b)->servicename);
break;
case 'Q':
r = (*a)->state - (*b)->state;
break;
case 'T':
r = (*a)->start - (*b)->start;
break;
case 'V':
r = (*a)->vmsize - (*b)->vmsize;
break;
case 'H':
r = strcmp((*a)->host, (*b)->host);
break;
case 'U':
r = strcmp((*a)->user, (*b)->user);
break;
case 'R':
r = strcmp((*a)->mailbox, (*b)->mailbox);
break;
case 'C':
r = strcmp((*a)->cmdname, (*b)->cmdname);
break;
}
return (rev ? -r : r);
}
/* Perform a proc action */
static int action_proc(struct transaction_t *txn)
{
unsigned level = 0, i;
struct buf *body = &txn->resp_body.payload;
piarray_t piarray = { 0, 0, NULL };
time_t now = time(0), boot_time = 0;
struct strlist *param;
struct tm tnow;
char key = 0;
FILE *f;
struct proc_columns {
char key;
const char *name;
} columns[] = {
{ 'P', "PID" },
{ 'S', "Service" },
{ 'Q', "State" },
{ 'T', "Start" },
{ 'V', "VmSize" },
{ 'H', "Client" },
{ 'U', "User" },
{ 'R', "Resource" },
{ 'C', "Command" },
{ 0, NULL}
};
localtime_r(&now, &tnow);
/* Setup for chunked response */
txn->flags.te |= TE_CHUNKED;
txn->resp_body.type = "text/html; charset=utf-8";
/* Short-circuit for HEAD request */
if (txn->meth == METH_HEAD) {
response_header(HTTP_OK, txn);
goto done;
}
/* Check for a sort key */
param = hash_lookup("sort", &txn->req_qparams);
if (param) {
char Ukey = toupper((int) *param->s);
for (i = 0; columns[i].key; i++) {
if (Ukey == columns[i].key) {
key = *param->s;
if (isupper((int) key)) columns[i].key = tolower((int) key);
break;
}
}
}
if (!key) {
key = 'P';
columns[0].key = 'p';
}
/* Find boot time in /proc/stat (needed for calculating process start) */
f = fopen("/proc/stat", "r");
if (f) {
char buf[1024];
while (fgets(buf, sizeof(buf), f)) {
if (sscanf(buf, "btime %ld\n", &boot_time) == 1) break;
while (buf[strlen(buf)-1] != '\n' && fgets(buf, sizeof(buf), f)) {
}
}
fclose(f);
}
/* Get and sort info for running processes */
proc_foreach(add_procinfo, &piarray);
cyr_qsort_r(piarray.data, piarray.count, sizeof(struct proc_info *),
&sort_procinfo, &key);
/* Send HTML header */
buf_reset(body);
buf_printf_markup(body, level, HTML_DOCTYPE);
buf_printf_markup(body, level++, "<html>");
buf_printf_markup(body, level++, "<head>");
buf_printf_markup(body, level, "<meta http-equiv=\"%s\" content=\"%s\">",
"Refresh", "1");
buf_printf_markup(body, level, "<title>%s</title>", actions[1].desc);
buf_printf_markup(body, --level, "</head>");
buf_printf_markup(body, level++, "<body>");
buf_printf_markup(body, level, "<h2>%s @ %s</h2>",
actions[1].desc, config_servername);
buf_printf_markup(body, level++, "<table border cellpadding=5>");
buf_printf_markup(body, level, "<caption><b>%.*s</b></caption>",
24 /* clip LF */, asctime(&tnow));
buf_printf_markup(body, level++, "<tr>");
for (i = 0; columns[i].key; i++) {
buf_printf_markup(body, level, "<th><a href=\"%s?sort=%c\">%s</a></th>",
txn->req_uri->path, columns[i].key, columns[i].name);
}
buf_printf_markup(body, --level, "</tr>");
/* Add processes to table */
for (i = 0; i < piarray.count; i++) {
struct proc_info *pinfo = piarray.data[i];
/* Send a chunk every 100 processes */
if (!(i % 100)) {
write_body(HTTP_OK, txn, buf_cstring(body), buf_len(body));
buf_reset(body);
}
buf_printf_markup(body, level++, "<tr>");
buf_printf_markup(body, level, "<td>%d</td>", (int) pinfo->pid);
buf_printf_markup(body, level, "<td>%s</td>", pinfo->servicename);
if (pinfo->vmsize) {
const char *proc_states[] = {
/* A */ "", /* B */ "", /* C */ "",
/* D */ " (waiting)",
/* E */ "", /* F */ "", /* G */ "", /* H */ "", /* I */ "",
/* J */ "", /* K */ "", /* L */ "", /* M */ "", /* N */ "",
/* O */ "", /* P */ "", /* Q */ "",
/* R */ " (running)",
/* S */ " (sleeping)",
/* T */ " (stopped)",
/* U */ "", /* V */ "",
/* W */ " (paging)",
/* X */ "", /* Y */ "",
/* Z */ " (zombie)"
};
const char *monthname[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
buf_printf_markup(body, level, "<td>%c%s</td>", pinfo->state,
isupper((int) pinfo->state) ?
proc_states[pinfo->state - 'A'] : "");
if (boot_time) {
struct tm start;
pinfo->start += boot_time;
localtime_r(&pinfo->start, &start);
if (start.tm_yday != tnow.tm_yday) {
buf_printf_markup(body, level, "<td>%s %02d</td>",
monthname[start.tm_mon], start.tm_mday);
}
else {
buf_printf_markup(body, level, "<td>%02d:%02d</td>",
start.tm_hour, start.tm_min);
}
}
else buf_printf_markup(body, level, "<td></td>");
buf_printf_markup(body, level, "<td>%lu</td>", pinfo->vmsize/1024);
}
else buf_printf_markup(body, level, "<td></td><td></td><td></td>");
buf_printf_markup(body, level, "<td>%s</td>", pinfo->host);
buf_printf_markup(body, level, "<td>%s</td>", pinfo->user);
buf_printf_markup(body, level, "<td>%s</td>", pinfo->mailbox);
buf_printf_markup(body, level, "<td>%s</td>", pinfo->cmdname);
buf_printf_markup(body, --level, "</tr>");
free(pinfo->servicename);
free(pinfo->host);
free(pinfo->user);
free(pinfo->mailbox);
free(pinfo->cmdname);
free(pinfo);
}
free(piarray.data);
/* Finish table */
buf_printf_markup(body, --level, "</table>");
/* Finish HTML */
buf_printf_markup(body, --level, "</body>");
buf_printf_markup(body, --level, "</html>");
write_body(0, txn, buf_cstring(body), buf_len(body));
/* End of output */
write_body(0, txn, NULL, 0);
done:
return 0;
}
/* Perform a disk usage action */
/*
* config_foreachoverflowstring() callback function to find partition-
* options and print filesystem stats
*/
struct part_rock {
const char *defpart;
unsigned meta;
struct buf *body;
unsigned *level;
};
static void get_part_stats(const char *key, const char *val, void *rock)
{
struct part_rock *prock = (struct part_rock *) rock;
struct buf *body = prock->body;
unsigned level = *prock->level;
const char *part, *path;
struct statvfs s;
long blocks_used;
long blocks_percent_used;
if (prock->meta) {
if (strncmp("meta", key, 4)) return;
key += 4;
}
if (strncmp("partition-", key, 10)) return;
part = key+10;
path = val;
if (statvfs(path, &s)) return;
blocks_used = s.f_blocks - s.f_bfree;
blocks_percent_used = (long)
(blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
buf_printf_markup(body, level++, "<tr>");
if (prock->defpart && !strcmp(part, prock->defpart))
buf_printf_markup(body, level, "<td><i>%s</i></td>", part);
else
buf_printf_markup(body, level, "<td>%s</td>", part);
buf_printf_markup(body, level, "<td align=\"right\">%ld</td>",
(long) (s.f_blocks * (s.f_frsize / 1024.0)));
buf_printf_markup(body, level, "<td align=\"right\">%ld</td>",
(long) ((s.f_blocks - s.f_bfree) * (s.f_frsize / 1024.0)));
buf_printf_markup(body, level, "<td align=\"right\">%ld</td>",
(long) (s.f_bavail * (s.f_frsize / 1024.0)));
buf_printf_markup(body, level, "<td align=\"right\">%ld%%</td>",
blocks_percent_used);
buf_printf_markup(body, level, "<td>%s</td>", path);
buf_printf_markup(body, --level, "</tr>");
*prock->level = level;
}
static int action_df(struct transaction_t *txn)
{
int precond;
struct message_guid guid;
const char *etag;
static time_t lastmod = 0;
unsigned level = 0;
static struct buf resp = BUF_INITIALIZER;
struct stat sbuf;
time_t mtime;
/* Generate ETag based on compile date/time of this source file,
and the config file size/mtime */
assert(!buf_len(&txn->buf));
stat(config_filename, &sbuf);
buf_printf(&txn->buf, "%ld-%ld-%ld", (long) compile_time,
sbuf.st_mtime, sbuf.st_size);
message_guid_generate(&guid, buf_cstring(&txn->buf), buf_len(&txn->buf));
etag = message_guid_encode(&guid);
mtime = MAX(compile_time, sbuf.st_mtime);
/* Check any preconditions, including range request */
txn->flags.ranges = 1;
precond = check_precond(txn, etag, mtime);
switch (precond) {
case HTTP_OK:
case HTTP_PARTIAL:
case HTTP_NOT_MODIFIED:
/* Fill in Etag, Last-Modified, Expires */
txn->resp_body.etag = etag;
txn->resp_body.lastmod = mtime;
txn->resp_body.maxage = 600; /* 10 min */
txn->flags.cc |= CC_MAXAGE;
if (precond != HTTP_NOT_MODIFIED) break;
GCC_FALLTHROUGH
default:
/* We failed a precondition - don't perform the request */
return precond;
}
if (txn->resp_body.lastmod > lastmod) {
/* Add HTML header */
struct part_rock prock = { config_defpartition, 0, &resp, &level };
buf_reset(&resp);
buf_printf_markup(&resp, level, HTML_DOCTYPE);
buf_printf_markup(&resp, level++, "<html>");
buf_printf_markup(&resp, level++, "<head>");
buf_printf_markup(&resp, level, "<title>%s</title>", actions[2].desc);
buf_printf_markup(&resp, --level, "</head>");
buf_printf_markup(&resp, level++, "<body>");
buf_printf_markup(&resp, level, "<h2>%s @ %s</h2>",
actions[2].desc, config_servername);
buf_printf_markup(&resp, level++, "<table border cellpadding=5>");
buf_printf_markup(&resp, level++, "<tr>");
buf_printf_markup(&resp, level, "<th>Partition</th>");
buf_printf_markup(&resp, level, "<th align=\"right\">1k-blocks</th>");
buf_printf_markup(&resp, level, "<th align=\"right\">Used</th>");
buf_printf_markup(&resp, level, "<th align=\"right\">Available</th>");
buf_printf_markup(&resp, level, "<th align=\"right\">Use%%</th>");
buf_printf_markup(&resp, level, "<th>Location</th>");
buf_printf_markup(&resp, --level, "</tr>");
/* Add partition stats */
config_foreachoverflowstring(get_part_stats, &prock);
/* Finish table */
buf_printf_markup(&resp, --level, "</table>");
/* Finish HTML */
buf_printf_markup(&resp, --level, "</body>");
buf_printf_markup(&resp, --level, "</html>");
/* Update lastmod */
lastmod = txn->resp_body.lastmod;
}
/* Output the HTML response */
txn->resp_body.type = "text/html; charset=utf-8";
write_body(precond, txn, buf_cstring(&resp), buf_len(&resp));
return 0;
}
struct service_item {
char *prefix;
int prefixlen;
struct service_item *next;
};
static void add_service(const char *name,
struct entry *e __attribute__((unused)),
void *rock)
{
struct service_item **ksp = (struct service_item **)rock;
struct service_item *knew = xmalloc(sizeof(struct service_item));
knew->prefix = strconcat(name, "_", (char *)NULL);
knew->prefixlen = strlen(knew->prefix);
knew->next = *ksp;
*ksp = knew;
}
enum {
OVER_UNKNOWN = 0,
OVER_SERVICE,
OVER_SASL,
OVER_PARTITION,
OVER_LAST
};
static int known_regular(const char *key)
{
int i;
for (i = 1; i < IMAPOPT_LAST; i++) {
if (!strcmp(imapopts[i].optname, key))
return 1;
}
return 0;
}
static unsigned known_overflow(const char *key)
{
const char *match;
/* any SASL key is OK */
if (!strncmp(key, "sasl_", 5)) return OVER_SASL;
/* any partition is OK */
if (!strncmp(key, "partition-", 10)) return OVER_PARTITION;
/* only valid if there's a partition with the same name */
if (!strncmp(key, "metapartition-", 14) &&
config_getoverflowstring(key+4, NULL)) return OVER_PARTITION;
/* only valid if there's a partition with the same name */
if (!strncmp(key, "archivepartition-", 17) &&
config_getoverflowstring(key+7, NULL)) return OVER_PARTITION;
/* only valid if there's a partition with the same name */
if ((match = strstr(key, "searchpartition-")) &&
config_getoverflowstring(match+6, NULL)) return OVER_PARTITION;
return OVER_UNKNOWN;
}
struct option_t {
const char *key;
const char *val;
};
struct conf_rock {
struct service_item *known_services;
ptrarray_t overflow[OVER_LAST];
};
static void overflow_cb(const char *key, const char *val, void *rock)
{
struct conf_rock *crock = (struct conf_rock *) rock;
struct option_t *newopt = xmalloc(sizeof(struct option_t));
unsigned known = known_overflow(key);
struct service_item *svc;
newopt->key = key;
newopt->val = val;
if (known) {
ptrarray_append(&crock->overflow[known], newopt);
return;