int
xfstat(Xfid *xf, Dir *dp)
{
Xfile *xp;
Session *s;
char buf[128];
xp = xf->xp;
s = xp->s;
if(s != xp->parent->s){
seprint(buf, buf+sizeof buf, "#%s", xf->uid);
dp->name = strstore(buf);
dp->uid = xf->uid;
dp->gid = xf->uid;
dp->muid = xf->uid;
dp->qid.path = (uvlong)xf->uid;
dp->qid.type = QTFILE;
dp->qid.vers = 0;
dp->mode = 0666;
dp->atime = time(0);
dp->mtime = dp->atime;
dp->length = NETCHLEN;
dp->type = 0;
dp->type = 0;
return 0;
}
setfid(s, xf->urfid);
if(xmesg(s, Tstat) == 0){
convM2D(s->f.stat, s->f.nstat, dp, (char*)s->statbuf);
if(xp->qid.path == dp->qid.path){
xp->name = strstore(dp->name);
return 0;
}
/* not reached ? */
chat("xp->qid.path=0x%.16llux, dp->qid.path=0x%.16llux name=%s...",
xp->qid.path, dp->qid.path, dp->name);
}
if(xp != xp->parent)
xpclear(xp);
else
clog("can't stat root: %s",
s->f.type == Rerror ? s->f.ename : "??");
return -1;
}
int
xfwstat(Xfid *xf, Dir *dp)
{
Xfile *xp;
Session *s;
xp = xf->xp;
s = xp->s;
/*
* xf->urfid can be zero because some DOS NFS clients
* try to do wstat on the #user authentication files on close.
*/
if(s == 0 || xf->urfid == 0)
return -1;
setfid(s, xf->urfid);
s->f.stat = s->statbuf;
convD2M(dp, s->f.stat, Maxstatdata);
if(xmesg(s, Twstat))
return -1;
xp->name = strstore(dp->name);
return 0;
}
struct Cookie *
Curl_cookie_add(struct SessionHandle *data,
/* The 'data' pointer here may be NULL at times, and thus
must only be used very carefully for things that can deal
with data being NULL. Such as infof() and similar */
struct CookieInfo *c,
bool httpheader, /* TRUE if HTTP header-style line */
char *lineptr, /* first character of the line */
const char *domain, /* default domain */
const char *path) /* full path used when this cookie is set,
used to get default path for the cookie
unless set */
{
struct Cookie *clist;
char name[MAX_NAME];
struct Cookie *co;
struct Cookie *lastc=NULL;
time_t now = time(NULL);
bool replace_old = FALSE;
bool badcookie = FALSE; /* cookies are good by default. mmmmm yummy */
#ifdef CURL_DISABLE_VERBOSE_STRINGS
(void)data;
#endif
/* First, alloc and init a new struct for it */
co = calloc(1, sizeof(struct Cookie));
if(!co)
return NULL; /* bail out if we're this low on memory */
if(httpheader) {
/* This line was read off a HTTP-header */
const char *ptr;
const char *semiptr;
char *what;
what = malloc(MAX_COOKIE_LINE);
if(!what) {
free(co);
return NULL;
}
semiptr=strchr(lineptr, ';'); /* first, find a semicolon */
while(*lineptr && ISBLANK(*lineptr))
lineptr++;
ptr = lineptr;
do {
/* we have a <what>=<this> pair or a stand-alone word here */
name[0]=what[0]=0; /* init the buffers */
if(1 <= sscanf(ptr, "%" MAX_NAME_TXT "[^;\r\n =]=%"
MAX_COOKIE_LINE_TXT "[^;\r\n]",
name, what)) {
/* Use strstore() below to properly deal with received cookie
headers that have the same string property set more than once,
and then we use the last one. */
const char *whatptr;
bool done = FALSE;
bool sep;
size_t len=strlen(what);
const char *endofn = &ptr[ strlen(name) ];
/* skip trailing spaces in name */
while(*endofn && ISBLANK(*endofn))
endofn++;
/* name ends with a '=' ? */
sep = (*endofn == '=')?TRUE:FALSE;
/* Strip off trailing whitespace from the 'what' */
while(len && ISBLANK(what[len-1])) {
what[len-1]=0;
len--;
}
/* Skip leading whitespace from the 'what' */
whatptr=what;
while(*whatptr && ISBLANK(*whatptr))
whatptr++;
if(!len) {
/* this was a "<name>=" with no content, and we must allow
'secure' and 'httponly' specified this weirdly */
done = TRUE;
if(Curl_raw_equal("secure", name))
co->secure = TRUE;
else if(Curl_raw_equal("httponly", name))
co->httponly = TRUE;
else if(sep)
/* there was a '=' so we're not done parsing this field */
done = FALSE;
}
if(done)
;
else if(Curl_raw_equal("path", name)) {
strstore(&co->path, whatptr);
if(!co->path) {
badcookie = TRUE; /* out of memory bad */
break;
}
co->spath = sanitize_cookie_path(co->path);
if(!co->spath) {
badcookie = TRUE; /* out of memory bad */
break;
}
}
else if(Curl_raw_equal("domain", name)) {
/* Now, we make sure that our host is within the given domain,
or the given domain is not valid and thus cannot be set. */
if('.' == whatptr[0])
whatptr++; /* ignore preceding dot */
if(!domain || tailmatch(whatptr, domain)) {
const char *tailptr=whatptr;
if(tailptr[0] == '.')
tailptr++;
strstore(&co->domain, tailptr); /* don't prefix w/dots
internally */
if(!co->domain) {
badcookie = TRUE;
break;
}
co->tailmatch=TRUE; /* we always do that if the domain name was
given */
}
else {
/* we did not get a tailmatch and then the attempted set domain
is not a domain to which the current host belongs. Mark as
bad. */
badcookie=TRUE;
infof(data, "skipped cookie with bad tailmatch domain: %s\n",
whatptr);
}
}
else if(Curl_raw_equal("version", name)) {
strstore(&co->version, whatptr);
if(!co->version) {
badcookie = TRUE;
break;
}
}
else if(Curl_raw_equal("max-age", name)) {
/* Defined in RFC2109:
Optional. The Max-Age attribute defines the lifetime of the
cookie, in seconds. The delta-seconds value is a decimal non-
negative integer. After delta-seconds seconds elapse, the
client should discard the cookie. A value of zero means the
cookie should be discarded immediately.
*/
strstore(&co->maxage, whatptr);
if(!co->maxage) {
badcookie = TRUE;
break;
}
co->expires =
strtol((*co->maxage=='\"')?&co->maxage[1]:&co->maxage[0],NULL,10)
+ (long)now;
}
else if(Curl_raw_equal("expires", name)) {
strstore(&co->expirestr, whatptr);
if(!co->expirestr) {
badcookie = TRUE;
break;
}
/* Note that if the date couldn't get parsed for whatever reason,
the cookie will be treated as a session cookie */
co->expires = curl_getdate(what, &now);
/* Session cookies have expires set to 0 so if we get that back
from the date parser let's add a second to make it a
non-session cookie */
if(co->expires == 0)
co->expires = 1;
else if(co->expires < 0)
co->expires = 0;
}
else if(!co->name) {
co->name = strdup(name);
co->value = strdup(whatptr);
if(!co->name || !co->value) {
badcookie = TRUE;
break;
}
}
/*
else this is the second (or more) name we don't know
about! */
}
else {
/* this is an "illegal" <what>=<this> pair */
}
if(!semiptr || !*semiptr) {
/* we already know there are no more cookies */
semiptr = NULL;
continue;
}
ptr=semiptr+1;
while(*ptr && ISBLANK(*ptr))
ptr++;
semiptr=strchr(ptr, ';'); /* now, find the next semicolon */
if(!semiptr && *ptr)
/* There are no more semicolons, but there's a final name=value pair
coming up */
semiptr=strchr(ptr, '\0');
} while(semiptr);
if(!badcookie && !co->domain) {
if(domain) {
/* no domain was given in the header line, set the default */
co->domain=strdup(domain);
if(!co->domain)
badcookie = TRUE;
}
}
if(!badcookie && !co->path && path) {
/* No path was given in the header line, set the default.
Note that the passed-in path to this function MAY have a '?' and
following part that MUST not be stored as part of the path. */
char *queryp = strchr(path, '?');
/* queryp is where the interesting part of the path ends, so now we
want to the find the last */
char *endslash;
if(!queryp)
endslash = strrchr(path, '/');
else
endslash = memrchr(path, '/', (size_t)(queryp - path));
if(endslash) {
size_t pathlen = (size_t)(endslash-path+1); /* include ending slash */
co->path=malloc(pathlen+1); /* one extra for the zero byte */
if(co->path) {
memcpy(co->path, path, pathlen);
co->path[pathlen]=0; /* zero terminate */
co->spath = sanitize_cookie_path(co->path);
if(!co->spath)
badcookie = TRUE; /* out of memory bad */
}
else
badcookie = TRUE;
}
}
free(what);
if(badcookie || !co->name) {
/* we didn't get a cookie name or a bad one,
this is an illegal line, bail out */
freecookie(co);
return NULL;
}
}
else {
/* This line is NOT a HTTP header style line, we do offer support for
reading the odd netscape cookies-file format here */
char *ptr;
char *firstptr;
char *tok_buf=NULL;
int fields;
/* IE introduced HTTP-only cookies to prevent XSS attacks. Cookies
marked with httpOnly after the domain name are not accessible
from javascripts, but since curl does not operate at javascript
level, we include them anyway. In Firefox's cookie files, these
lines are preceded with #HttpOnly_ and then everything is
as usual, so we skip 10 characters of the line..
*/
if(strncmp(lineptr, "#HttpOnly_", 10) == 0) {
lineptr += 10;
co->httponly = TRUE;
}
if(lineptr[0]=='#') {
/* don't even try the comments */
free(co);
return NULL;
}
/* strip off the possible end-of-line characters */
ptr=strchr(lineptr, '\r');
if(ptr)
*ptr=0; /* clear it */
ptr=strchr(lineptr, '\n');
if(ptr)
*ptr=0; /* clear it */
firstptr=strtok_r(lineptr, "\t", &tok_buf); /* tokenize it on the TAB */
/* Now loop through the fields and init the struct we already have
allocated */
for(ptr=firstptr, fields=0; ptr && !badcookie;
ptr=strtok_r(NULL, "\t", &tok_buf), fields++) {
switch(fields) {
case 0:
if(ptr[0]=='.') /* skip preceding dots */
ptr++;
co->domain = strdup(ptr);
if(!co->domain)
badcookie = TRUE;
break;
case 1:
/* This field got its explanation on the 23rd of May 2001 by
Andrés García:
flag: A TRUE/FALSE value indicating if all machines within a given
domain can access the variable. This value is set automatically by
the browser, depending on the value you set for the domain.
As far as I can see, it is set to true when the cookie says
.domain.com and to false when the domain is complete www.domain.com
*/
co->tailmatch = Curl_raw_equal(ptr, "TRUE")?TRUE:FALSE;
break;
case 2:
/* It turns out, that sometimes the file format allows the path
field to remain not filled in, we try to detect this and work
around it! Andrés García made us aware of this... */
if(strcmp("TRUE", ptr) && strcmp("FALSE", ptr)) {
/* only if the path doesn't look like a boolean option! */
co->path = strdup(ptr);
if(!co->path)
badcookie = TRUE;
else {
co->spath = sanitize_cookie_path(co->path);
if(!co->spath) {
badcookie = TRUE; /* out of memory bad */
}
}
break;
}
/* this doesn't look like a path, make one up! */
co->path = strdup("/");
if(!co->path)
badcookie = TRUE;
co->spath = strdup("/");
if(!co->spath)
badcookie = TRUE;
fields++; /* add a field and fall down to secure */
/* FALLTHROUGH */
case 3:
co->secure = Curl_raw_equal(ptr, "TRUE")?TRUE:FALSE;
break;
case 4:
co->expires = curlx_strtoofft(ptr, NULL, 10);
break;
case 5:
co->name = strdup(ptr);
if(!co->name)
badcookie = TRUE;
break;
case 6:
co->value = strdup(ptr);
if(!co->value)
badcookie = TRUE;
break;
}
}
if(6 == fields) {
/* we got a cookie with blank contents, fix it */
co->value = strdup("");
if(!co->value)
badcookie = TRUE;
else
fields++;
}
if(!badcookie && (7 != fields))
/* we did not find the sufficient number of fields */
badcookie = TRUE;
if(badcookie) {
freecookie(co);
return NULL;
}
}
if(!c->running && /* read from a file */
c->newsession && /* clean session cookies */
!co->expires) { /* this is a session cookie since it doesn't expire! */
freecookie(co);
return NULL;
}
co->livecookie = c->running;
/* now, we have parsed the incoming line, we must now check if this
superceeds an already existing cookie, which it may if the previous have
the same domain and path as this */
clist = c->cookies;
replace_old = FALSE;
while(clist) {
if(Curl_raw_equal(clist->name, co->name)) {
/* the names are identical */
if(clist->domain && co->domain) {
if(Curl_raw_equal(clist->domain, co->domain))
/* The domains are identical */
replace_old=TRUE;
}
else if(!clist->domain && !co->domain)
replace_old = TRUE;
if(replace_old) {
/* the domains were identical */
if(clist->spath && co->spath) {
if(Curl_raw_equal(clist->spath, co->spath)) {
replace_old = TRUE;
}
else
replace_old = FALSE;
}
else if(!clist->spath && !co->spath)
replace_old = TRUE;
else
replace_old = FALSE;
}
if(replace_old && !co->livecookie && clist->livecookie) {
/* Both cookies matched fine, except that the already present
cookie is "live", which means it was set from a header, while
the new one isn't "live" and thus only read from a file. We let
live cookies stay alive */
/* Free the newcomer and get out of here! */
freecookie(co);
return NULL;
}
if(replace_old) {
co->next = clist->next; /* get the next-pointer first */
/* then free all the old pointers */
free(clist->name);
if(clist->value)
free(clist->value);
if(clist->domain)
free(clist->domain);
if(clist->path)
free(clist->path);
if(clist->spath)
free(clist->spath);
if(clist->expirestr)
free(clist->expirestr);
if(clist->version)
free(clist->version);
if(clist->maxage)
free(clist->maxage);
*clist = *co; /* then store all the new data */
free(co); /* free the newly alloced memory */
co = clist; /* point to the previous struct instead */
/* We have replaced a cookie, now skip the rest of the list but
make sure the 'lastc' pointer is properly set */
do {
lastc = clist;
clist = clist->next;
} while(clist);
break;
}
}
lastc = clist;
clist = clist->next;
}
if(c->running)
/* Only show this when NOT reading the cookies from a file */
infof(data, "%s cookie %s=\"%s\" for domain %s, path %s, "
"expire %" FORMAT_OFF_T "\n",
replace_old?"Replaced":"Added", co->name, co->value,
co->domain, co->path, co->expires);
if(!replace_old) {
/* then make the last item point on this new one */
if(lastc)
lastc->next = co;
else
c->cookies = co;
c->numcookies++; /* one more cookie in the jar */
}
return co;
}
void
srvinit(int fd, char *file, char *addr)
{
char fdservice[16], *naddr;
Session *s;
Xfile *xp;
Xfid *xf;
Fid *f;
s = calloc(1, sizeof(Session));
s->spec = "";
s->fd = -1;
if(fd >= 0){
s->fd = fd;
sprint(fdservice, "/fd/%d", s->fd);
s->service = strstore(fdservice);
chat("fd = %d\n", s->fd);
}else if(file){
chat("file = \"%s\"\n", file);
s->service = file;
s->fd = open(file, ORDWR);
if(s->fd < 0){
clog("can't open %s: %r\n", file);
goto error;
}
}else if(addr){
chat("addr = \"%s\"\n", addr);
naddr = netmkaddr(addr, 0, "9fs");
s->service = addr;
s->fd = dial(naddr, 0, 0, 0);
if(s->fd < 0){
clog("can't dial %s: %r\n", naddr);
goto error;
}
}
chat("version...");
s->tag = NOTAG-1;
s->f.msize = Maxfdata+IOHDRSZ;
s->f.version = "9P2000";
xmesg(s, Tversion);
messagesize = IOHDRSZ+s->f.msize;
chat("version spec %s size %d\n", s->f.version, s->f.msize);
s->tag = 0;
chat("authenticate...");
if(authhostowner(s) < 0){
clog("auth failed %r\n");
goto error;
}
chat("attach as none...");
f = newfid(s);
s->f.fid = f - s->fids;
s->f.afid = ~0x0UL;
s->f.uname = "none";
s->f.aname = s->spec;
if(xmesg(s, Tattach)){
clog("attach failed\n");
goto error;
}
xp = xfile(&s->f.qid, s, 1);
s->root = xp;
xp->parent = xp;
xp->name = "/";
xf = xfid("none", xp, 1);
xf->urfid = f;
clog("service=%s uid=%s fid=%ld\n",
s->service, xf->uid, xf->urfid - s->fids);
if(tail)
tail->next = s;
else
head = s;
tail = s;
return;
error:
if(s->fd >= 0)
close(s->fd);
free(s);
}
