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Loader.c
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/* @(#)highwire/Loader.c
*
* Currently has ended up a junk file of initializations
* loading routine and some assorted other routines
* for file handling.
*/
#ifdef __PUREC__
# include <tos.h>
# include <ext.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <gem.h>
#include "file_sys.h"
#include "global.h"
#include "hwWind.h"
#include "vaproto.h"
/* #include "av_comm.h" */
#include "schedule.h"
#include "Containr.h"
#include "Location.h"
#include "Loader.h"
#include "parser.h"
#include "http.h"
#include "inet.h"
#include "cache.h"
extern short av_shell_id; /* Desktop's AES ID */
extern short av_shell_status; /* What AV commands can desktop do? */
extern const char * cfg_Viewer;
char fsel_path[HW_PATH_MAX];
char help_file[HW_PATH_MAX];
static short start_application (const char * appl, LOCATION loc);
/*______________return_values_of_scheduled_jobs,_controlling_their_priority___*/
#define JOB_KEEP 1 /* restart again later and doesn't change priority */
#define JOB_AGED -1 /* restart, but decrease the prio a bit because the job is
* running already a bit longer now */
#define JOB_NOOP -2 /* restart also, but decrease the priority much more because
* this job didn't got anything to do (was stalled) */
#define JOB_DONE 0 /* job is done, remove from list and don't start it again */
/*____________________________________________priorities_for_following_jobs___*/
#define PRIO_INTERN 200 /* internal produced pages like error pages, about,
* dir listings etc, get the highest priority in general */
#define PRIO_USERACT 100 /* start of loading something initiated by a user
* action, normally a link clicked. this should have be
* the next highest value */
#define PRIO_AUTOMATIC 10 /* start loading some part of a page, usually a
* frame */
#define PRIO_TRIVIAL 1 /* start loading some object, usually an image */
#define PRIO_RECIVE 20 /* begin receiving data from remote */
#define PRIO_SUCCESS 91 /* decode a file, usually an image */
#define PRIO_LOADFILE 95 /* load a local file into memory */
#define PRIO_FINISH 99 /* decode from memory, usually html or text */
#define PRIO_KEEP 0 /* generic, when nothing from above matches */
static int loader_job (void * arg, long invalidated);
static int header_job (void * arg, long invalidated);
static int receive_job (void * arg, long invalidated);
static int generic_job (void * arg, long invalidated);
/*----------------------------------------------------------------------------*/
static BOOL
start_parser (LOADER loader)
{
SCHED_FUNC func = parse_plain;
BOOL chk0 = FALSE;
PARSER parser;
if (!loader->MimeType) {
loader->MimeType = MIME_TEXT;
}
parser = new_parser (loader);
switch (loader->MimeType)
{
case MIME_IMAGE:
func = parse_image;
break;
case MIME_TXT_HTML:
if (loader->Data) {
func = parse_html;
chk0 = TRUE;
} else if (PROTO_isLocal(loader->Location->Proto)) {
func = parse_dir;
} else { /* PROT_ABOUT -- also catch internal errors */
func = parse_about;
}
break;
case MIME_TEXT: {
char * p = loader->Data;
while (isspace(*p)) p++;
#ifdef MOD_TROFF
if (p[0] == '.' &&
(p[1] == '"' || (p[1] == '\\' && p[2] == '"') || isalpha(p[1]))) {
extern int parse_troff (void *, long);
func = parse_troff;
break;
}
#endif
while (strncmp(p, "<!--", 4) == 0 || strncmp(p, "<?xml", 5) == 0) {
long i = min(500, (long)(loader->Data - p) + loader->DataSize - 15);
while (--i > 0 && *(p++) != '>');
while (--i > 0 && isspace(*p)) p++;
}
if (strnicmp (p, "<html>", 6) == 0 ||
strnicmp (p, "<!DOCTYPE HTML", 14) == 0) {
func = parse_html;
chk0 = TRUE;
break;
}
}
default: /* pretend it's plain text */ ;
}
if (chk0) { /* check for invalid nul characters in html */
char * p = loader->Data, * q;
long n = loader->DataSize;
while (n > 0l && (q = memchr (p, '\0', n)) != NULL) {
*q = ' ';
n -= q - p;
p = q;
}
}
return sched_insert (func, parser, (long)parser->Target, PRIO_FINISH);
}
/******************************************************************************/
typedef struct s_ldr_chunk * LDRCHUNK;
struct s_ldr_chunk {
LDRCHUNK next;
size_t size;
char data[1];
};
/*============================================================================*/
LOADER
new_loader (LOCATION loc, CONTAINR target, BOOL lookup)
{
const char * appl = NULL;
LOADER loader = malloc (sizeof (struct s_loader));
loader->Location = location_share (loc);
loader->Target = target;
loader->Encoding = ENCODING_WINDOWS1252;
loader->MimeType = MIME_Unknown;
loader->Referer = NULL;
loader->AuthRealm = NULL;
loader->AuthBasic = NULL;
loader->PostBuf = NULL;
loader->FileExt[0] = '\0';
loader->MarginW = -1;
loader->MarginH = -1;
loader->ScrollV = 0;
loader->ScrollH = 0;
/* */
loader->Cached = NULL;
loader->Tdiff = 0;
loader->Date = 0;
loader->Expires = 0;
loader->DataSize = 0;
loader->DataFill = 0;
loader->Data = NULL;
loader->notified = FALSE;
loader->Retry = cfg_ConnRetry;
loader->Error = E_OK;
/* */
loader->SuccJob = NULL;
loader->FreeArg = NULL;
/* */
loader->rdChunked = FALSE;
loader->rdSocket = -1;
loader->rdLeft = 0;
loader->rdDest = NULL;
loader->rdTlen = 0;
loader->rdList = loader->rdCurr = NULL;
/* copy Authorization */
if (target) {
FRAME frame = containr_Frame (target);
if (frame && frame->AuthRealm && frame->AuthBasic) {
loader->AuthRealm = strdup (frame->AuthRealm);
loader->AuthBasic = strdup (frame->AuthBasic);
}
}
if (loc->Proto == PROT_FILE || PROTO_isRemote (loc->Proto)) {
loader->MimeType = mime_byExtension (loc->File, &appl, loader->FileExt);
}
if (loc->Proto == PROT_HTTP && lookup) {
CACHED cached = cache_lookup (loc, 0, NULL);
if (cached) {
union { CACHED c; LOCATION l; } u;
u.c = cache_bound (cached, &loader->Location);
loader->Cached = u.l;
if (!loader->MimeType) {
loader->MimeType = mime_byExtension (loader->Cached->File,
&appl, NULL);
}
}
}
loader->ExtAppl = (appl ? strdup (appl) : NULL);
containr_notify (loader->Target, HW_ActivityBeg, NULL);
return loader;
}
/*============================================================================*/
void
delete_loader (LOADER * p_loader)
{
LOADER loader = *p_loader;
if (loader) {
if (loader->notified) {
containr_notify (loader->Target, HW_PageFinished, NULL);
}
containr_notify (loader->Target, HW_ActivityEnd, NULL);
#ifdef USE_INET
if (loader->rdSocket >= 0) {
inet_close (loader->rdSocket);
}
#endif /* USE_INET */
if (loader->rdList) {
LDRCHUNK chunk = loader->rdList, next;
do {
next = chunk->next;
free (chunk);
} while ((chunk = next) != NULL);
}
if (loader->ExtAppl) {
free (loader->ExtAppl);
}
if (loader->Data) {
free (loader->Data);
}
if (loader->Cached) {
cache_release ((CACHED*)&loader->Cached, FALSE);
}
if (loader->PostBuf) {
delete_post (loader->PostBuf);
}
if (loader->AuthRealm) {
free (loader->AuthRealm);
}
if (loader->AuthBasic) {
free (loader->AuthBasic);
}
free_location (&loader->Referer);
free_location (&loader->Location);
free (loader);
*p_loader = NULL;
}
}
/*============================================================================*/
LOADER
start_page_load (CONTAINR target, const char * url, LOCATION base,
BOOL u_act, POSTDATA post_buff)
{
LOCATION loc = (url ? new_location (url, base) : location_share (base));
LOADER loader = NULL;
if (loc->Proto == PROT_MAILTO || loc->Proto == PROT_FTP) {
start_application (NULL, loc);
} else {
loader = start_cont_load (target, NULL, loc, u_act, (post_buff == NULL));
if (loader) {
loader->PostBuf = post_buff;
} else {
delete_post (post_buff);
}
}
free_location (&loc);
return loader;
}
/*============================================================================*/
LOADER
start_cont_load (CONTAINR target, const char * url, LOCATION base,
BOOL u_act, BOOL use_cache)
{
LOCATION loc = (url ? new_location (url, base) : location_share (base));
LOADER loader = new_loader (loc, target, use_cache);
free_location (&loc);
loc = (loader->Cached ? loader->Cached : loader->Location);
if (!loader->notified) {
loader->notified = containr_notify (loader->Target, HW_PageStarted,
loader->Location);
}
if (loc->Proto == PROT_DIR) {
loader->MimeType = MIME_TXT_HTML;
sched_insert (parse_dir, new_parser (loader), (long)target, PRIO_INTERN);
} else if (loc->Proto == PROT_ABOUT) {
loader->MimeType = MIME_TXT_HTML;
sched_insert (parse_about, new_parser (loader),(long)target, PRIO_INTERN);
} else if (MIME_Major(loader->MimeType) == MIME_IMAGE) {
loader->MimeType = MIME_IMAGE;
sched_insert (parse_image, new_parser (loader),(long)target, PRIO_INTERN);
#ifdef USE_INET
# ifdef MOD_MBOX
} else if (loc->Proto == PROT_POP) {
int parse_mbox (void*, long);
sched_insert (parse_mbox, new_parser (loader), (long)target, PRIO_INTERN);
# endif
} else if (loc->Proto == PROT_HTTP) {
if (loader->ExtAppl) {
loader->SuccJob = generic_job;
containr_notify (loader->Target, HW_PageFinished, NULL);
loader->notified = FALSE;
}
sched_insert (header_job, loader, (long)target,
(u_act ? PRIO_USERACT : PRIO_AUTOMATIC));
#endif /* USE_INET */
} else if (loc->Proto) {
const char txt[] = "<html><head><title>Error</title></head><body>"
"<h1>Protocol #%i not supported!</h1></body></html>";
char buf [sizeof(txt) +10];
sprintf (buf, txt, loc->Proto);
loader->Error = -EPROTONOSUPPORT;
loader->Data = strdup (buf);
loader->MimeType = MIME_TXT_HTML;
sched_insert (parse_html, new_parser (loader), (long)target, PRIO_INTERN);
} else if (loader->ExtAppl) {
start_application (loader->ExtAppl, loc);
delete_loader (&loader);
} else {
sched_insert (loader_job, loader, (long)target, PRIO_LOADFILE);
}
return loader;
}
/*============================================================================*/
LOADER
start_objc_load (CONTAINR target, const char * url, LOCATION base,
int (*successor)(void*, long), void * objc)
{
LOCATION loc = new_location (url, base);
BOOL hdr_only = (!target && successor);
LOADER loader = new_loader (loc, target, !hdr_only);
free_location (&loc);
loc = (loader->Cached ? loader->Cached : loader->Location);
if (successor) {
loader->SuccJob = successor;
} else if (loader->ExtAppl) {
loader->SuccJob = generic_job;
} else {
printf ("start_objc_load(%s) dropped.\n", loc->FullName);
delete_loader (&loader);
return NULL;
}
loader->FreeArg = objc;
if (PROTO_isLocal (loc->Proto)) {
sched_insert (loader->SuccJob, loader, (long)target, PRIO_SUCCESS);
#ifdef USE_INET
} else if (loc->Proto == PROT_HTTP) {
sched_insert (header_job, loader, (long)target,
(hdr_only ? PRIO_USERACT : PRIO_TRIVIAL));
#endif
} else {
printf ("start_objc_load() invalid protocol %i.\n", loc->Proto);
loader->Error = -EPROTONOSUPPORT;
(*loader->SuccJob)(loader, 0);
loader = NULL;
}
return loader;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
#ifdef USE_INET
static int
chunked_job (void * arg, long invalidated)
{
LOADER loader = arg;
BOOL s_recv = (loader->rdDest == NULL);
if (invalidated) {
return receive_job (arg, invalidated);
}
loader->rdDest = NULL;
loader->rdLeft = 0;
while (1) {
char * data = loader->rdTemp;
size_t size = 0;
if (!loader->rdChunked) {
if (loader->rdSocket >= 0) {
size = 8192;
}
if (size < loader->rdTlen) {
size = loader->rdTlen;
}
} else {
long n = loader->rdTlen -2;
data = (n > 0 ? memchr (data +2, '\n', n) : NULL);
if (!data) {
n = inet_recv (loader->rdSocket, loader->rdTemp + loader->rdTlen,
sizeof (loader->rdTemp) - loader->rdTlen);
if (n > 0) {
loader->rdTlen += n;
if (loader->rdTlen > 2) {
data = memchr (loader->rdTemp +2, '\n', loader->rdTlen -2);
}
} else {
/* check for connection termination */
if (n == -ECONNRESET) {
inet_close (loader->rdSocket);
loader->rdSocket = -1;
loader->rdLeft = 0;
break;
}
}
}
if (data) {
*(data++) = '\0';
if ((long)(size = strtoul (loader->rdTemp, NULL, 16)) <= 0) {
loader->rdTlen = 0; /* end of chunks */
} else {
loader->rdTlen -= data - loader->rdTemp;
}
} else if (loader->rdTlen == sizeof(loader->rdTemp)) {
printf ("rotten chunk header\n");
loader->rdDest = NULL;
loader->rdLeft = 0;
break;
} else {
if (!s_recv) {
sched_insert (chunked_job, loader, (long)loader->Target,
PRIO_KEEP);
}
return TRUE;
}
}
if (size) {
LDRCHUNK chunk = malloc (sizeof (struct s_ldr_chunk) + size -1);
if (!loader->rdList) loader->rdList = chunk;
else ((LDRCHUNK)loader->rdCurr)->next = chunk;
loader->rdCurr = chunk;
loader->rdDest = chunk->data;
loader->rdLeft = size;
chunk->next = NULL;
chunk->size = size;
if (loader->rdTlen) {
if (size > loader->rdTlen) {
size = loader->rdTlen;
}
memcpy (loader->rdDest, data, size);
loader->rdDest += size;
loader->rdLeft -= size;
loader->DataFill += size;
loader->rdTlen -= size;
if (loader->rdTlen) { /* there are still data in the temp buffer */
memmove (loader->rdTemp, data + size, loader->rdTlen);
}
if (!loader->rdLeft) { /* chunk was completely filled from */
loader->rdDest = NULL; /* the temp buffer */
continue;
}
}
}
break;
}
if (!loader->rdDest) {
LDRCHUNK next = loader->rdList, chunk;
long left = loader->DataFill;
char * p = loader->Data = malloc (left +3);
while ((chunk = next) != NULL) {
if (left > 0) {
memcpy (p, chunk->data, (left < chunk->size ? left : chunk->size));
p += chunk->size;
}
left -= chunk->size;
next = chunk->next;
free (chunk);
}
loader->rdList = loader->rdCurr = NULL;
loader->DataSize = loader->DataFill;
if (loader->rdChunked && left < 0) {
loader->DataSize -= left;
}
}
if (s_recv) {
sched_insert (receive_job, loader, (long)loader->Target, PRIO_KEEP);
}
return JOB_DONE;
}
#endif /* USE_INET */
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
#ifdef USE_INET
static int
receive_job (void * arg, long invalidated)
{
LOADER loader = arg;
if (invalidated) {
if (!loader->PostBuf) {
cache_abort (loader->Location);
}
if (loader->SuccJob) {
(*loader->SuccJob)(arg, invalidated);
} else {
delete_loader (&loader);
}
return JOB_DONE;
}
if (loader->rdLeft) {
long n = inet_recv (loader->rdSocket, loader->rdDest, loader->rdLeft);
int r = JOB_AGED;
if (n < 0) { /* no more data available */
inet_close (loader->rdSocket);
loader->rdSocket = -1;
loader->rdLeft = 0;
} else if (n) {
loader->rdDest += n;
loader->rdLeft -= n;
loader->DataFill += n;
} else {
r = JOB_NOOP;
}
if (loader->rdLeft) {
return r; /* re-schedule for next block of data */
}
if (!loader->DataSize) {
if (chunked_job (arg, 0)) {
return JOB_DONE; /* chunk head need to be completed */
} else if (loader->rdLeft) {
return r; /* re-schedule for start of next chunk */
}
}
}
/* else download finished */
if (loader->rdSocket >= 0) {
inet_close (loader->rdSocket);
loader->rdSocket = -1;
}
if (loader->Data) {
char * p = loader->Data + loader->DataFill;
*(p++) = '\0';
*(p++) = '\0';
*(p) = '\0';
if (!loader->PostBuf || MIME_Major (loader->MimeType) != MIME_TEXT) {
const char * ext = mime_toExtension (loader->MimeType);
if (loader->PostBuf) {
loader->Expires = -1; /* mark to get deleted at program end */
}
loader->Cached = cache_assign (loader->Location, loader->Data,
loader->DataSize,
(ext && *ext ? ext : loader->FileExt),
loader->Date, loader->Expires);
if (loader->Cached) {
cache_bound (loader->Location, NULL);
}
}
}
if (loader->SuccJob) {
sched_insert (loader->SuccJob, loader,(long)loader->Target, PRIO_SUCCESS);
} else {
start_parser (loader);
}
return JOB_DONE;
}
#endif /* USE_INET */
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
#ifdef USE_INET
static int
header_job (void * arg, long invalidated)
{
LOADER loader = arg;
LOCATION loc = loader->Location;
const char * host = NULL;
HTTP_HDR hdr;
short sock = -1;
short reply;
char * auth = NULL;
BOOL hdr_only = (!loader->Target && loader->SuccJob);
BOOL cache_lk = (!loader->PostBuf && !hdr_only);
#define CACHE_ABORT(loc) { if (cache_lk) cache_abort (loc); }
if (invalidated) {
if (loader->SuccJob) {
(*loader->SuccJob)(arg, invalidated);
} else {
delete_loader (&loader);
}
return JOB_DONE;
}
if (cache_lk) switch (CResultDsk (cache_exclusive (loc))) {
case CR_BUSY:
/* printf ("header_job(%s): cache busy\n", loc->FullName);*/
return JOB_KEEP;
case CR_LOCAL: {
CACHED cached = cache_lookup (loc, 0, NULL);
if (cached) {
union { CACHED c; LOCATION l; } u;
u.c = cache_bound (cached, &loader->Location);
loader->Cached = u.l;
if (!loader->MimeType) {
loader->MimeType = mime_byExtension (loader->Cached->File,
NULL, NULL);
}
/* printf ("header_job(%s): cache hit\n", loc->FullName);*/
if (loader->SuccJob) {
sched_insert (loader->SuccJob,
loader, (long)loader->Target, PRIO_SUCCESS);
} else {
sched_insert (loader_job,
loader, (long)loader->Target, PRIO_LOADFILE);
}
return JOB_DONE;
} else { /* cache inconsistance error */
printf ("header_job(%s): not in cache!\n", loc->FullName);
return header_job (arg, (long)loader->Target); /* invalidate */
}
} /*break;*/
}
/* Connect to host
*/
if (loader->Target) {
if ((host = location_Host (loc, NULL)) != NULL && !*host) host = NULL;
}
if (host) {
char buf[300];
sprintf (buf, "Connecting: %.*s", (int)(sizeof(buf) -13), host);
containr_notify (loader->Target, HW_SetInfo, buf);
}
while(1) { /* authorization loop */
do {
long tout = (loader->SuccJob ? hdr_tout_gfx : hdr_tout_doc);
reply = http_header (loc, &hdr, sizeof (loader->rdTemp) -2,
&sock, tout, loader->Referer, auth, loader->PostBuf);
} while (reply == 100);
if (reply == -ECONNRESET || reply == -ETIMEDOUT) {
if (loader->Retry) {
CACHE_ABORT(loc);
loader->Retry--;
return JOB_KEEP; /* try connecting later */
}
}
if (reply == -35/*EMFILE*/) {
CACHE_ABORT(loc);
return JOB_KEEP; /* too many open connections yet, try again later */
}
if (reply == 401) {
if (!auth && hdr.Realm && loader->AuthBasic && loader->AuthRealm
&& strcmp (loader->AuthRealm, hdr.Realm) == 0) {
inet_close (sock);
sock = -1;
auth = loader->AuthBasic;
continue;
}
if (loader->AuthRealm) {
free (loader->AuthRealm);
loader->AuthRealm = NULL;
}
if (loader->AuthBasic) {
free (loader->AuthBasic);
loader->AuthBasic = NULL;
}
if (hdr.Realm && !loader->SuccJob && !hdr_only) {
const char form[] =
"<html><head><title>%.*s</title></head>"
"<body bgcolor=\"white\">"
"<h1>Authorization Required</h1> <br>"
"Enter user name and password for <q><b>%s</b></q> at <b>%s</b>:"
"<form method=\"AUTH\">"
"<table border=\"0\">"
"<tr><td align=right>User: "
"<td><input type=\"text\" name=\"USR\">"
"<tr><td align=right>Password: "
"<td><input type=\"password\" name=\"PWD\">"
"<tr><td align=right>"
"<input type=\"submit\" value=\"Login\"> "
"</table></form> <p><hr size=\"1\">"
"\n<small><pre>%s</pre></small>\n"
"</bod></html>";
const char * titl = hdr.Head, * text;
size_t titl_s, size;
while (*titl && !isspace(*titl)) titl++;
while (isspace(*titl)) titl++;
text = titl;
while (*text && *text != '\r' && *text != '\n') text++;
titl_s = text - titl;
while (isspace(*text)) text++;
size = sizeof(form)
+ titl_s + strlen(hdr.Realm) + strlen(host) + strlen (text);
if ((loader->AuthRealm = strdup (hdr.Realm)) != NULL &&
(loader->Data = malloc (size)) != NULL) {
inet_close (sock);
sock = -1;
CACHE_ABORT(loc);
size = sprintf (loader->Data, form,
(int)titl_s, titl, hdr.Realm, host, text);
loader->Data[++size] = '\0';
loader->Data[++size] = '\0';
loader->MimeType = MIME_TXT_HTML;
start_parser (loader);
return JOB_DONE;
}
}
}
break;
}
/* Check for HTTP header redirect
*/
if ((reply == 301 || reply == 302 || reply == 303) && hdr.Rdir) {
LOCATION redir = new_location (hdr.Rdir, loader->Location);
CACHED cached = (hdr_only ? NULL : cache_lookup (redir, 0, NULL));
inet_close (sock);
CACHE_ABORT(loc);
if (!loader->MimeType) {
loader->MimeType = mime_byExtension (redir->File, NULL, NULL);
}
if (cached) {
union { CACHED c; LOCATION l; } u;
if (loader->Cached) {
cache_release ((CACHED*)&loader->Cached, FALSE);
}
u.c = cache_bound (cached, &loader->Location);
loader->Cached = loc = u.l;
free_location (&redir);
if (loader->SuccJob) {
sched_insert (loader->SuccJob,
loader, (long)loader->Target, PRIO_SUCCESS);
} else {
sched_insert (loader_job,
loader, (long)loader->Target, PRIO_LOADFILE);
}
return JOB_DONE;
} else {
free_location (&loader->Location);
loader->Location = loc = redir;
return JOB_KEEP; /* re-schedule with the new location */
}
}
/* start loading
*/
if (hdr.MimeType) {
if (MIME_Major (hdr.MimeType) && MIME_Minor (hdr.MimeType)
&& (MIME_Major (loader->MimeType) != MIME_Major (hdr.MimeType)
|| !MIME_Minor (loader->MimeType))) {
loader->MimeType = hdr.MimeType;
}
if (hdr.Encoding) {
loader->Encoding = hdr.Encoding;
}
}
if (reply == 200) {
if (host) {
char buf[300];
sprintf (buf, "Receiving from %.*s", (int)(sizeof(buf) -16), host);
containr_notify (loader->Target, HW_SetInfo, buf);
}
loader->Date = (hdr.Modified > 0 ? hdr.Modified : hdr.SrvrDate);
loader->Tdiff = hdr.LoclDate - hdr.SrvrDate;
if (hdr.Expires > 0) {
loader->Expires = hdr.Expires + loader->Tdiff;
} else if (hdr.Modified <= 0) {
/* none valid date given at all, so we assume a dynamic page
* (eg. from php) that needs to be revisited at the next session */
loader->Expires = -1; /* mark to get deleted at program end */
}
if (hdr_only) {
loader->DataSize = hdr.Size;
if ((loader->rdChunked = hdr.Chunked) == TRUE) {
loader->rdTemp[0] = '\r';
loader->rdTemp[1] = '\n';
loader->rdTlen = 2;
}
if (hdr.Tlen) {
memcpy (loader->rdTemp + loader->rdTlen, hdr.Tail, hdr.Tlen);
loader->rdTlen += hdr.Tlen;
}
loader->rdSocket = sock;
sched_insert (loader->SuccJob, loader, (long)0, PRIO_RECIVE);
return JOB_DONE;
} else if (hdr.Size >= 0 && !hdr.Chunked) {
loader->Data = loader->rdDest = malloc (hdr.Size +3);
loader->DataSize = loader->rdLeft = hdr.Size;
loader->DataFill = hdr.Tlen;
if (loader->DataFill) {
if (loader->DataFill > loader->rdLeft) {
loader->DataFill = loader->rdLeft;
}
memcpy (loader->rdDest, hdr.Tail, loader->DataFill);
loader->rdDest += loader->DataFill;
loader->rdLeft -= loader->DataFill;
}
if (sock < 0 || !loader->rdLeft) {
loader->rdDest[0] = '\0';
loader->rdDest[1] = '\0';
loader->rdDest[2] = '\0';
/* nothing more to do, falls through */
} else {
loader->rdSocket = sock;
sched_insert (receive_job,
loader, (long)loader->Target, PRIO_RECIVE);
return JOB_DONE;
}
} else {
if ((loader->rdChunked = hdr.Chunked) == TRUE) {
loader->rdTemp[0] = '\r';
loader->rdTemp[1] = '\n';
loader->rdTlen = 2;
}
if (hdr.Tlen) {
memcpy (loader->rdTemp + loader->rdTlen, hdr.Tail, hdr.Tlen);
loader->rdTlen += hdr.Tlen;
}
loader->rdSocket = sock;
sched_insert (chunked_job, loader, (long)loader->Target, PRIO_RECIVE);
return JOB_DONE;
}
} else { /* something went wrong */
loader->Error = reply;
}
inet_close (sock);
/* if it is a short file and already finished, end proceedings
*/
if (loader->Data) {
return receive_job (loader, 0);
}
/* an error case occured
*/
CACHE_ABORT(loc);
loader->MimeType = MIME_TEXT;
loader->Data = strdup (hdr.Head);
if (loader->SuccJob) {
(*loader->SuccJob)(loader, 0);
} else {
start_parser (loader);
}
#undef CACHE_ABORT
return JOB_DONE;
}
#endif /* USE_INET */
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
static int
loader_job (void * arg, long invalidated)
{
LOADER loader = arg;
LOCATION loc = (loader->Cached ? loader->Cached : loader->Location);
if (invalidated) {
delete_loader (&loader);
return JOB_DONE;
}
if (!loader->notified) {
loader->notified = containr_notify (loader->Target, HW_PageStarted,
loader->Location);
}
loader->Data = load_file (loc, &loader->DataSize, &loader->DataFill);
if (!loader->Data) {
char buf[1024] = "<html><head><title>Error</title></head>"
"<body><h1>Page not found!</h1>\n<u><pre>";
size_t n = strlen (buf);
const char tail[] = "</pre></u>\n</body></html>";
n += location_FullName (loc, buf + n, sizeof(buf) - n - sizeof(tail));
strcpy (buf + n, tail);
loader->Error = -ENOENT;
loader->Data = strdup (buf);
loader->MimeType = MIME_TXT_HTML;
}
/* registers a parser job with the scheduler */
start_parser (loader);
return JOB_DONE;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
static int
generic_job (void * arg, long invalidated)
{
LOADER loader = arg;
if (!invalidated && !loader->Error) {
LOCATION loc = (loader->Cached ? loader->Cached : loader->Location);
if (!loader->ExtAppl) {
printf("generic_job(): no appl found!\n");
} else if (PROTO_isRemote (loc->Proto)) {
printf("generic_job(): not in cache!\n");
} else {
start_application (loader->ExtAppl, loc);
}
}
delete_loader (&loader);
return JOB_DONE;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
int
saveas_job (void * arg, long invalidated)
{
LOADER loader = arg;
char fsel_file[HW_PATH_MAX] = "";
/* WORD r, butt;*/ /* file selector exit button */
int fh1, fh2;