ref: 2707beb7b46cf29fb1ebafad33edf8d48041ed50
dir: /sys/src/cmd/venti/srv/httpd.c/
#include "stdinc.h"
#include "dat.h"
#include "fns.h"
#include "xml.h"
typedef struct HttpObj HttpObj;
extern QLock memdrawlock;
enum
{
ObjNameSize = 64,
MaxObjs = 64
};
struct HttpObj
{
char name[ObjNameSize];
int (*f)(HConnect*);
};
static HttpObj objs[MaxObjs];
static char *webroot;
static void listenproc(void*);
static int estats(HConnect *c);
static int dindex(HConnect *c);
static int xindex(HConnect *c);
static int xlog(HConnect *c);
static int sindex(HConnect *c);
static int hempty(HConnect *c);
static int hlcacheempty(HConnect *c);
static int hdcacheempty(HConnect *c);
static int hicacheempty(HConnect *c);
static int hicachekick(HConnect *c);
static int hdcachekick(HConnect *c);
static int hicacheflush(HConnect *c);
static int hdcacheflush(HConnect *c);
static int httpdobj(char *name, int (*f)(HConnect*));
static int xgraph(HConnect *c);
static int xset(HConnect *c);
static int fromwebdir(HConnect *c);
int
httpdinit(char *address, char *dir)
{
fmtinstall('D', hdatefmt);
/* fmtinstall('H', httpfmt); */
fmtinstall('U', hurlfmt);
if(address == nil)
address = "tcp!*!http";
webroot = dir;
httpdobj("/stats", estats);
httpdobj("/index", dindex);
httpdobj("/storage", sindex);
httpdobj("/xindex", xindex);
httpdobj("/flushicache", hicacheflush);
httpdobj("/flushdcache", hdcacheflush);
httpdobj("/kickicache", hicachekick);
httpdobj("/kickdcache", hdcachekick);
httpdobj("/graph", xgraph);
httpdobj("/set", xset);
httpdobj("/log", xlog);
httpdobj("/empty", hempty);
httpdobj("/emptyicache", hicacheempty);
httpdobj("/emptylumpcache", hlcacheempty);
httpdobj("/emptydcache", hdcacheempty);
httpdobj("/disk", hdisk);
httpdobj("/debug", hdebug);
httpdobj("/proc/", hproc);
if(vtproc(listenproc, address) < 0)
return -1;
return 0;
}
static int
httpdobj(char *name, int (*f)(HConnect*))
{
int i;
if(name == nil || strlen(name) >= ObjNameSize)
return -1;
for(i = 0; i < MaxObjs; i++){
if(objs[i].name[0] == '\0'){
strcpy(objs[i].name, name);
objs[i].f = f;
return 0;
}
if(strcmp(objs[i].name, name) == 0)
return -1;
}
return -1;
}
static HConnect*
mkconnect(void)
{
HConnect *c;
c = mallocz(sizeof(HConnect), 1);
if(c == nil)
sysfatal("out of memory");
c->replog = nil;
c->hpos = c->header;
c->hstop = c->header;
return c;
}
void httpproc(void*);
static void
listenproc(void *vaddress)
{
HConnect *c;
char *address, ndir[NETPATHLEN], dir[NETPATHLEN];
int ctl, nctl, data;
address = vaddress;
ctl = announce(address, dir);
if(ctl < 0){
fprint(2, "venti: httpd can't announce on %s: %r\n", address);
return;
}
if(0) print("announce ctl %d dir %s\n", ctl, dir);
for(;;){
/*
* wait for a call (or an error)
*/
nctl = listen(dir, ndir);
if(0) print("httpd listen %d %s...\n", nctl, ndir);
if(nctl < 0){
fprint(2, "venti: httpd can't listen on %s: %r\n", address);
return;
}
data = accept(ctl, ndir);
if(0) print("httpd accept %d...\n", data);
if(data < 0){
fprint(2, "venti: httpd accept: %r\n");
close(nctl);
continue;
}
if(0) print("httpd close nctl %d\n", nctl);
close(nctl);
c = mkconnect();
hinit(&c->hin, data, Hread);
hinit(&c->hout, data, Hwrite);
vtproc(httpproc, c);
}
}
void
httpproc(void *v)
{
HConnect *c;
int ok, i, n;
c = v;
for(;;){
/*
* No timeout because the signal appears to hit every
* proc, not just us.
*/
if(hparsereq(c, 0) < 0)
break;
for(i = 0; i < MaxObjs && objs[i].name[0]; i++){
n = strlen(objs[i].name);
if((objs[i].name[n-1] == '/' && strncmp(c->req.uri, objs[i].name, n) == 0)
|| (objs[i].name[n-1] != '/' && strcmp(c->req.uri, objs[i].name) == 0)){
ok = (*objs[i].f)(c);
goto found;
}
}
ok = fromwebdir(c);
found:
hflush(&c->hout);
if(c->head.closeit)
ok = -1;
hreqcleanup(c);
if(ok < 0)
break;
}
hreqcleanup(c);
close(c->hin.fd);
free(c);
}
char*
hargstr(HConnect *c, char *name, char *def)
{
HSPairs *p;
for(p=c->req.searchpairs; p; p=p->next)
if(strcmp(p->s, name) == 0)
return p->t;
return def;
}
vlong
hargint(HConnect *c, char *name, vlong def)
{
char *a;
if((a = hargstr(c, name, nil)) == nil)
return def;
return atoll(a);
}
static int
percent(ulong v, ulong total)
{
if(total == 0)
total = 1;
if(v < 1000*1000)
return (v * 100) / total;
total /= 100;
if(total == 0)
total = 1;
return v / total;
}
static int
preq(HConnect *c)
{
if(hparseheaders(c, 0) < 0)
return -1;
if(strcmp(c->req.meth, "GET") != 0
&& strcmp(c->req.meth, "HEAD") != 0)
return hunallowed(c, "GET, HEAD");
if(c->head.expectother || c->head.expectcont)
return hfail(c, HExpectFail, nil);
return 0;
}
int
hsettype(HConnect *c, char *type)
{
Hio *hout;
int r;
r = preq(c);
if(r < 0)
return r;
hout = &c->hout;
if(c->req.vermaj){
hokheaders(c);
hprint(hout, "Content-type: %s\r\n", type);
if(http11(c))
hprint(hout, "Transfer-Encoding: chunked\r\n");
hprint(hout, "\r\n");
}
if(http11(c))
hxferenc(hout, 1);
else
c->head.closeit = 1;
return 0;
}
int
hsethtml(HConnect *c)
{
return hsettype(c, "text/html; charset=utf-8");
}
int
hsettext(HConnect *c)
{
return hsettype(c, "text/plain; charset=utf-8");
}
static int
herror(HConnect *c)
{
int n;
Hio *hout;
hout = &c->hout;
n = snprint(c->xferbuf, HBufSize, "<html><head><title>Error</title></head>\n<body><h1>Error</h1>\n<pre>%r</pre>\n</body></html>");
hprint(hout, "%s %s\r\n", hversion, "400 Bad Request");
hprint(hout, "Date: %D\r\n", time(nil));
hprint(hout, "Server: Venti\r\n");
hprint(hout, "Content-Type: text/html\r\n");
hprint(hout, "Content-Length: %d\r\n", n);
if(c->head.closeit)
hprint(hout, "Connection: close\r\n");
else if(!http11(c))
hprint(hout, "Connection: Keep-Alive\r\n");
hprint(hout, "\r\n");
if(c->req.meth == nil || strcmp(c->req.meth, "HEAD") != 0)
hwrite(hout, c->xferbuf, n);
return hflush(hout);
}
int
hnotfound(HConnect *c)
{
int r;
r = preq(c);
if(r < 0)
return r;
return hfail(c, HNotFound, c->req.uri);
}
struct {
char *ext;
char *type;
} exttab[] = {
".html", "text/html",
".txt", "text/plain",
".xml", "text/xml",
".png", "image/png",
".gif", "image/gif",
0
};
static int
fromwebdir(HConnect *c)
{
char buf[4096], *p, *ext, *type;
int i, fd, n, defaulted;
Dir *d;
if(webroot == nil || strstr(c->req.uri, ".."))
return hnotfound(c);
snprint(buf, sizeof buf-20, "%s/%s", webroot, c->req.uri+1);
defaulted = 0;
reopen:
if((fd = open(buf, OREAD)) < 0)
return hnotfound(c);
d = dirfstat(fd);
if(d == nil){
close(fd);
return hnotfound(c);
}
if(d->mode&DMDIR){
if(!defaulted){
defaulted = 1;
strcat(buf, "/index.html");
free(d);
close(fd);
goto reopen;
}
free(d);
return hnotfound(c);
}
free(d);
p = buf+strlen(buf);
type = "application/octet-stream";
for(i=0; exttab[i].ext; i++){
ext = exttab[i].ext;
if(p-strlen(ext) >= buf && strcmp(p-strlen(ext), ext) == 0){
type = exttab[i].type;
break;
}
}
if(hsettype(c, type) < 0){
close(fd);
return 0;
}
while((n = read(fd, buf, sizeof buf)) > 0)
if(hwrite(&c->hout, buf, n) < 0)
break;
close(fd);
hflush(&c->hout);
return 0;
}
static struct
{
char *name;
int *p;
} namedints[] =
{
"compress", &compressblocks,
"devnull", &writestodevnull,
"logging", &ventilogging,
"stats", &collectstats,
"icachesleeptime", &icachesleeptime,
"minicachesleeptime", &minicachesleeptime,
"arenasumsleeptime", &arenasumsleeptime,
"l0quantum", &l0quantum,
"l1quantum", &l1quantum,
"manualscheduling", &manualscheduling,
"ignorebloom", &ignorebloom,
"syncwrites", &syncwrites,
"icacheprefetch", &icacheprefetch,
0
};
static int
xset(HConnect *c)
{
int i, old;
char *name, *value;
if(hsettext(c) < 0)
return -1;
if((name = hargstr(c, "name", nil)) == nil || name[0] == 0){
for(i=0; namedints[i].name; i++)
hprint(&c->hout, "%s = %d\n", namedints[i].name, *namedints[i].p);
hflush(&c->hout);
return 0;
}
for(i=0; namedints[i].name; i++)
if(strcmp(name, namedints[i].name) == 0)
break;
if(!namedints[i].name){
hprint(&c->hout, "%s not found\n", name);
hflush(&c->hout);
return 0;
}
if((value = hargstr(c, "value", nil)) == nil || value[0] == 0){
hprint(&c->hout, "%s = %d\n", namedints[i].name, *namedints[i].p);
hflush(&c->hout);
return 0;
}
old = *namedints[i].p;
*namedints[i].p = atoll(value);
hprint(&c->hout, "%s = %d (was %d)\n", name, *namedints[i].p, old);
hflush(&c->hout);
return 0;
}
static int
estats(HConnect *c)
{
Hio *hout;
int r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
/*
hprint(hout, "lump writes=%,ld\n", stats.lumpwrites);
hprint(hout, "lump reads=%,ld\n", stats.lumpreads);
hprint(hout, "lump cache read hits=%,ld\n", stats.lumphit);
hprint(hout, "lump cache read misses=%,ld\n", stats.lumpmiss);
hprint(hout, "clump disk writes=%,ld\n", stats.clumpwrites);
hprint(hout, "clump disk bytes written=%,lld\n", stats.clumpbwrites);
hprint(hout, "clump disk bytes compressed=%,lld\n", stats.clumpbcomp);
hprint(hout, "clump disk reads=%,ld\n", stats.clumpreads);
hprint(hout, "clump disk bytes read=%,lld\n", stats.clumpbreads);
hprint(hout, "clump disk bytes uncompressed=%,lld\n", stats.clumpbuncomp);
hprint(hout, "clump directory disk writes=%,ld\n", stats.ciwrites);
hprint(hout, "clump directory disk reads=%,ld\n", stats.cireads);
hprint(hout, "index disk writes=%,ld\n", stats.indexwrites);
hprint(hout, "index disk reads=%,ld\n", stats.indexreads);
hprint(hout, "index disk bloom filter hits=%,ld %d%% falsemisses=%,ld %d%%\n",
stats.indexbloomhits,
percent(stats.indexbloomhits, stats.indexreads),
stats.indexbloomfalsemisses,
percent(stats.indexbloomfalsemisses, stats.indexreads));
hprint(hout, "bloom filter bits=%,ld of %,ld %d%%\n",
stats.bloomones, stats.bloombits, percent(stats.bloomones, stats.bloombits));
hprint(hout, "index disk reads for modify=%,ld\n", stats.indexwreads);
hprint(hout, "index disk reads for allocation=%,ld\n", stats.indexareads);
hprint(hout, "index block splits=%,ld\n", stats.indexsplits);
hprint(hout, "index cache lookups=%,ld\n", stats.iclookups);
hprint(hout, "index cache hits=%,ld %d%%\n", stats.ichits,
percent(stats.ichits, stats.iclookups));
hprint(hout, "index cache fills=%,ld %d%%\n", stats.icfills,
percent(stats.icfills, stats.iclookups));
hprint(hout, "index cache inserts=%,ld\n", stats.icinserts);
hprint(hout, "disk cache hits=%,ld\n", stats.pchit);
hprint(hout, "disk cache misses=%,ld\n", stats.pcmiss);
hprint(hout, "disk cache reads=%,ld\n", stats.pcreads);
hprint(hout, "disk cache bytes read=%,lld\n", stats.pcbreads);
hprint(hout, "disk cache writes=%,ld\n", stats.dirtydblocks);
hprint(hout, "disk cache writes absorbed=%,ld %d%%\n", stats.absorbedwrites,
percent(stats.absorbedwrites, stats.dirtydblocks));
hprint(hout, "disk cache flushes=%,ld\n", stats.dcacheflushes);
hprint(hout, "disk cache flush writes=%,ld (%,ld per flush)\n",
stats.dcacheflushwrites,
stats.dcacheflushwrites/(stats.dcacheflushes ? stats.dcacheflushes : 1));
hprint(hout, "disk writes=%,ld\n", stats.diskwrites);
hprint(hout, "disk bytes written=%,lld\n", stats.diskbwrites);
hprint(hout, "disk reads=%,ld\n", stats.diskreads);
hprint(hout, "disk bytes read=%,lld\n", stats.diskbreads);
*/
hflush(hout);
return 0;
}
static int
sindex(HConnect *c)
{
Hio *hout;
Index *ix;
Arena *arena;
vlong clumps, cclumps, uncsize, used, size;
int i, r, active;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
ix = mainindex;
hprint(hout, "index=%s\n", ix->name);
active = 0;
clumps = 0;
cclumps = 0;
uncsize = 0;
used = 0;
size = 0;
for(i = 0; i < ix->narenas; i++){
arena = ix->arenas[i];
if(arena != nil && arena->memstats.clumps != 0){
active++;
clumps += arena->memstats.clumps;
cclumps += arena->memstats.cclumps;
uncsize += arena->memstats.uncsize;
used += arena->memstats.used;
}
size += arena->size;
}
hprint(hout, "total arenas=%,d active=%,d\n", ix->narenas, active);
hprint(hout, "total space=%,lld used=%,lld\n", size, used + clumps * ClumpInfoSize);
hprint(hout, "clumps=%,lld compressed clumps=%,lld data=%,lld compressed data=%,lld\n",
clumps, cclumps, uncsize, used - clumps * ClumpSize);
hflush(hout);
return 0;
}
static void
darena(Hio *hout, Arena *arena)
{
hprint(hout, "arena='%s' on %s at [%lld,%lld)\n\tversion=%d created=%d modified=%d",
arena->name, arena->part->name, arena->base, arena->base + arena->size + 2 * arena->blocksize,
arena->version, arena->ctime, arena->wtime);
if(arena->memstats.sealed)
hprint(hout, " mem=sealed");
if(arena->diskstats.sealed)
hprint(hout, " disk=sealed");
hprint(hout, "\n");
if(scorecmp(zeroscore, arena->score) != 0)
hprint(hout, "\tscore=%V\n", arena->score);
hprint(hout, "\twritten: clumps=%d compressed clumps=%d data=%,lld compressed data=%,lld storage=%,lld\n",
arena->memstats.clumps, arena->memstats.cclumps, arena->memstats.uncsize,
arena->memstats.used - arena->memstats.clumps * ClumpSize,
arena->memstats.used + arena->memstats.clumps * ClumpInfoSize);
hprint(hout, "\tindexed: clumps=%d compressed clumps=%d data=%,lld compressed data=%,lld storage=%,lld\n",
arena->diskstats.clumps, arena->diskstats.cclumps, arena->diskstats.uncsize,
arena->diskstats.used - arena->diskstats.clumps * ClumpSize,
arena->diskstats.used + arena->diskstats.clumps * ClumpInfoSize);
}
static int
hempty(HConnect *c)
{
Hio *hout;
int r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
emptylumpcache();
emptydcache();
emptyicache();
hprint(hout, "emptied all caches\n");
hflush(hout);
return 0;
}
static int
hlcacheempty(HConnect *c)
{
Hio *hout;
int r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
emptylumpcache();
hprint(hout, "emptied lumpcache\n");
hflush(hout);
return 0;
}
static int
hicacheempty(HConnect *c)
{
Hio *hout;
int r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
emptyicache();
hprint(hout, "emptied icache\n");
hflush(hout);
return 0;
}
static int
hdcacheempty(HConnect *c)
{
Hio *hout;
int r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
emptydcache();
hprint(hout, "emptied dcache\n");
hflush(hout);
return 0;
}
static int
hicachekick(HConnect *c)
{
Hio *hout;
int r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
kickicache();
hprint(hout, "kicked icache\n");
hflush(hout);
return 0;
}
static int
hdcachekick(HConnect *c)
{
Hio *hout;
int r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
kickdcache();
hprint(hout, "kicked dcache\n");
hflush(hout);
return 0;
}
static int
hicacheflush(HConnect *c)
{
Hio *hout;
int r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
flushicache();
hprint(hout, "flushed icache\n");
hflush(hout);
return 0;
}
static int
hdcacheflush(HConnect *c)
{
Hio *hout;
int r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
flushdcache();
hprint(hout, "flushed dcache\n");
hflush(hout);
return 0;
}
static int
dindex(HConnect *c)
{
Hio *hout;
Index *ix;
int i, r;
r = hsettext(c);
if(r < 0)
return r;
hout = &c->hout;
ix = mainindex;
hprint(hout, "index=%s version=%d blocksize=%d tabsize=%d\n",
ix->name, ix->version, ix->blocksize, ix->tabsize);
hprint(hout, "\tbuckets=%d div=%d\n", ix->buckets, ix->div);
for(i = 0; i < ix->nsects; i++)
hprint(hout, "\tsect=%s for buckets [%lld,%lld) buckmax=%d\n", ix->smap[i].name, ix->smap[i].start, ix->smap[i].stop, ix->sects[i]->buckmax);
for(i = 0; i < ix->narenas; i++){
if(ix->arenas[i] != nil && ix->arenas[i]->memstats.clumps != 0){
hprint(hout, "arena=%s at index [%lld,%lld)\n\t", ix->amap[i].name, ix->amap[i].start, ix->amap[i].stop);
darena(hout, ix->arenas[i]);
}
}
hflush(hout);
return 0;
}
typedef struct Arg Arg;
struct Arg
{
int index;
int index2;
};
static long
rawgraph(Stats *s, Stats *t, void *va)
{
Arg *a;
USED(s);
a = va;
return t->n[a->index];
}
static long
diffgraph(Stats *s, Stats *t, void *va)
{
Arg *a;
a = va;
return t->n[a->index] - s->n[a->index];
}
static long
pctgraph(Stats *s, Stats *t, void *va)
{
Arg *a;
USED(s);
a = va;
return percent(t->n[a->index], t->n[a->index2]);
}
static long
pctdiffgraph(Stats *s, Stats *t, void *va)
{
Arg *a;
a = va;
return percent(t->n[a->index]-s->n[a->index], t->n[a->index2]-s->n[a->index2]);
}
static long
xdiv(long a, long b)
{
if(b == 0)
b++;
return a/b;
}
static long
divdiffgraph(Stats *s, Stats *t, void *va)
{
Arg *a;
a = va;
return xdiv(t->n[a->index] - s->n[a->index], t->n[a->index2] - s->n[a->index2]);
}
static long
netbw(Stats *s)
{
ulong *n;
n = s->n;
return n[StatRpcReadBytes]+n[StatRpcWriteBytes]; /* not exactly right */
}
static long
diskbw(Stats *s)
{
ulong *n;
n = s->n;
return n[StatApartReadBytes]+n[StatApartWriteBytes]
+ n[StatIsectReadBytes]+n[StatIsectWriteBytes]
+ n[StatSumReadBytes];
}
static long
iobw(Stats *s)
{
return netbw(s)+diskbw(s);
}
static long
diskgraph(Stats *s, Stats *t, void *va)
{
USED(va);
return diskbw(t)-diskbw(s);
}
static long
netgraph(Stats *s, Stats *t, void *va)
{
USED(va);
return netbw(t)-netbw(s);
}
static long
iograph(Stats *s, Stats *t, void *va)
{
USED(va);
return iobw(t)-iobw(s);
}
static char* graphname[] =
{
"rpctotal",
"rpcread",
"rpcreadok",
"rpcreadfail",
"rpcreadbyte",
"rpcreadtime",
"rpcreadcached",
"rpcreadcachedtime",
"rpcreaduncached",
"rpcreaduncachedtime",
"rpcwrite",
"rpcwritenew",
"rpcwriteold",
"rpcwritefail",
"rpcwritebyte",
"rpcwritetime",
"rpcwritenewtime",
"rpcwriteoldtime",
"lcachehit",
"lcachemiss",
"lcachelookup",
"lcachewrite",
"lcachesize",
"lcachestall",
"lcachelookuptime",
"dcachehit",
"dcachemiss",
"dcachelookup",
"dcacheread",
"dcachewrite",
"dcachedirty",
"dcachesize",
"dcacheflush",
"dcachestall",
"dcachelookuptime",
"dblockstall",
"lumpstall",
"icachehit",
"icachemiss",
"icacheread",
"icachewrite",
"icachefill",
"icacheprefetch",
"icachedirty",
"icachesize",
"icacheflush",
"icachestall",
"icachelookuptime",
"icachelookup",
"scachehit",
"scacheprefetch",
"bloomhit",
"bloommiss",
"bloomfalsemiss",
"bloomlookup",
"bloomones",
"bloombits",
"apartread",
"apartreadbyte",
"apartwrite",
"apartwritebyte",
"isectread",
"isectreadbyte",
"isectwrite",
"isectwritebyte",
"sumread",
"sumreadbyte",
"cigload",
"cigloadtime",
};
static int
findname(char *s)
{
int i;
for(i=0; i<nelem(graphname); i++)
if(strcmp(graphname[i], s) == 0)
return i;
return -1;
}
static void
dotextbin(Hio *io, Graph *g)
{
int i, nbin;
Statbin *b, bin[2000]; /* 32 kB, but whack is worse */
needstack(8192); /* double check that bin didn't kill us */
nbin = 100;
binstats(g->fn, g->arg, g->t0, g->t1, bin, nbin);
hprint(io, "stats\n\n");
for(i=0; i<nbin; i++){
b = &bin[i];
hprint(io, "%d: nsamp=%d min=%d max=%d avg=%d\n",
i, b->nsamp, b->min, b->max, b->avg);
}
}
static int
xgraph(HConnect *c)
{
char *name;
Hio *hout;
Memimage *m;
int dotext;
Graph g;
Arg arg;
char *graph, *a;
name = hargstr(c, "arg", "");
if((arg.index = findname(name)) == -1 && strcmp(name, "*") != 0){
werrstr("unknown name %s", name);
goto error;
}
a = hargstr(c, "arg2", "");
if(a[0] && (arg.index2 = findname(a)) == -1){
werrstr("unknown name %s", a);
goto error;
}
g.arg = &arg;
g.t0 = hargint(c, "t0", -120);
g.t1 = hargint(c, "t1", 0);
g.min = hargint(c, "min", -1);
g.max = hargint(c, "max", -1);
g.wid = hargint(c, "wid", -1);
g.ht = hargint(c, "ht", -1);
dotext = hargstr(c, "text", "")[0] != 0;
g.fill = hargint(c, "fill", -1);
graph = hargstr(c, "graph", "raw");
if(strcmp(graph, "raw") == 0)
g.fn = rawgraph;
else if(strcmp(graph, "diskbw") == 0)
g.fn = diskgraph;
else if(strcmp(graph, "iobw") == 0)
g.fn = iograph;
else if(strcmp(graph, "netbw") == 0)
g.fn = netgraph;
else if(strcmp(graph, "diff") == 0)
g.fn = diffgraph;
else if(strcmp(graph, "pct") == 0)
g.fn = pctgraph;
else if(strcmp(graph, "pctdiff") == 0)
g.fn = pctdiffgraph;
else if(strcmp(graph, "divdiff") == 0)
g.fn = divdiffgraph;
else{
werrstr("unknown graph %s", graph);
goto error;
}
if(dotext){
hsettype(c, "text/plain");
dotextbin(&c->hout, &g);
hflush(&c->hout);
return 0;
}
m = statgraph(&g);
if(m == nil)
goto error;
if(hsettype(c, "image/png") < 0)
return -1;
hout = &c->hout;
writepng(hout, m);
qlock(&memdrawlock);
freememimage(m);
qunlock(&memdrawlock);
hflush(hout);
return 0;
error:
return herror(c);
}
static int
xloglist(HConnect *c)
{
if(hsettype(c, "text/html") < 0)
return -1;
vtloghlist(&c->hout);
hflush(&c->hout);
return 0;
}
static int
xlog(HConnect *c)
{
char *name;
VtLog *l;
name = hargstr(c, "log", "");
if(!name[0])
return xloglist(c);
l = vtlogopen(name, 0);
if(l == nil)
return hnotfound(c);
if(hsettype(c, "text/html") < 0){
vtlogclose(l);
return -1;
}
vtloghdump(&c->hout, l);
vtlogclose(l);
hflush(&c->hout);
return 0;
}
static int
xindex(HConnect *c)
{
if(hsettype(c, "text/xml") < 0)
return -1;
xmlindex(&c->hout, mainindex, "index", 0);
hflush(&c->hout);
return 0;
}
void
xmlindent(Hio *hout, int indent)
{
int i;
for(i = 0; i < indent; i++)
hputc(hout, '\t');
}
void
xmlaname(Hio *hout, char *v, char *tag)
{
hprint(hout, " %s=\"%s\"", tag, v);
}
void
xmlscore(Hio *hout, u8int *v, char *tag)
{
if(scorecmp(zeroscore, v) == 0)
return;
hprint(hout, " %s=\"%V\"", tag, v);
}
void
xmlsealed(Hio *hout, int v, char *tag)
{
if(!v)
return;
hprint(hout, " %s=\"yes\"", tag);
}
void
xmlu32int(Hio *hout, u32int v, char *tag)
{
hprint(hout, " %s=\"%ud\"", tag, v);
}
void
xmlu64int(Hio *hout, u64int v, char *tag)
{
hprint(hout, " %s=\"%llud\"", tag, v);
}
void
vtloghdump(Hio *h, VtLog *l)
{
int i;
VtLogChunk *c;
char *name;
name = l ? l->name : "<nil>";
hprint(h, "<html><head>\n");
hprint(h, "<title>Venti Server Log: %s</title>\n", name);
hprint(h, "</head><body>\n");
hprint(h, "<b>Venti Server Log: %s</b>\n<p>\n", name);
if(l){
c = l->w;
for(i=0; i<l->nchunk; i++){
if(++c == l->chunk+l->nchunk)
c = l->chunk;
hwrite(h, c->p, c->wp-c->p);
}
}
hprint(h, "</body></html>\n");
}
static int
strpcmp(const void *va, const void *vb)
{
return strcmp(*(char**)va, *(char**)vb);
}
void
vtloghlist(Hio *h)
{
char **p;
int i, n;
hprint(h, "<html><head>\n");
hprint(h, "<title>Venti Server Logs</title>\n");
hprint(h, "</head><body>\n");
hprint(h, "<b>Venti Server Logs</b>\n<p>\n");
p = vtlognames(&n);
qsort(p, n, sizeof(p[0]), strpcmp);
for(i=0; i<n; i++)
hprint(h, "<a href=\"/log?log=%s\">%s</a><br>\n", p[i], p[i]);
vtfree(p);
hprint(h, "</body></html>\n");
}