**
*******************************************************************************
**
** A Blob is a variable-length containers for arbitrary string
** or binary data.
*/
#include "config.h"
#if defined(FOSSIL_ENABLE_MINIZ)
#  define MINIZ_HEADER_FILE_ONLY
#  include "miniz.c"
#else
#  include <zlib.h>
#endif
#include "blob.h"
#if defined(_WIN32)
#include <fcntl.h>
#include <io.h>
#endif

#if INTERFACE

        blob_append(pBlob, zBuf, n);
      }
    }
  }else{
    blob_resize(pBlob, nToRead);
    n = fread(blob_buffer(pBlob), 1, nToRead, in);
    blob_resize(pBlob, n);
  }
  return blob_size(pBlob);
}

/*
** Initialize a blob to the data read from HTTP input.  Return
** the number of bytes read into the blob.  Any prior content
** of the blob is discarded, not freed.
*/
int blob_read_from_cgi(Blob *pBlob, int nToRead){
  size_t n;
  blob_zero(pBlob);
  if( nToRead<0 ){
    char zBuf[10000];
    while( !cgi_feof() ){
      n = cgi_fread(zBuf, sizeof(zBuf));
      if( n>0 ){
        blob_append(pBlob, zBuf, n);
      }
    }
  }else{
    blob_resize(pBlob, nToRead);
    n = cgi_fread(blob_buffer(pBlob), nToRead);
    blob_resize(pBlob, n);
  }
  return blob_size(pBlob);
}

/*
** Initialize a blob to be the content of a file.  If the filename
** is blank or "-" then read from standard input.

#ifdef __EMX__
  typedef int socklen_t;
#endif
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <assert.h>
#include "cgi.h"
#include "cygsup.h"

#if INTERFACE
/*
** Shortcuts for cgi_parameter.  P("x") returns the value of query parameter
** or cookie "x", or NULL if there is no such parameter or cookie.  PD("x","y")

static int is_gzippable(void){
  if( g.fNoHttpCompress ) return 0;
  if( strstr(PD("HTTP_ACCEPT_ENCODING", ""), "gzip")==0 ) return 0;
  return strncmp(zContentType, "text/", 5)==0
    || sqlite3_strglob("application/*xml", zContentType)==0
    || sqlite3_strglob("application/*javascript", zContentType)==0;
}


/*
** The following routines read or write content from/to the wire for
** an HTTP request.  Depending on settings the content might be coming
** from or going to a socket, or a file, or it might come from or go
** to an SSL decoder/encoder.
*/
/*
** Works like fgets():
**
** Read a single line of input into s[].  Ensure that s[] is zero-terminated.
** The s[] buffer is size bytes and so at most size-1 bytes will be read.
**
** Return a pointer to s[] on success, or NULL at end-of-input.
*/
static char *cgi_fgets(char *s, int size){
  if( !g.httpUseSSL ){
    return fgets(s, size, g.httpIn);
  }
  assert( !"SSL Server not yet implemented" );
}

/* Works like fread():
**
** Read as many as bytes of content as we can, up to a maximum of nmemb
** bytes.  Return the number of bytes read.  Return -1 if there is no
** further input or if an I/O error occurs.
*/
size_t cgi_fread(void *ptr, size_t nmemb){
  if( !g.httpUseSSL ){
    return fread(ptr, 1, nmemb, g.httpIn);
  }
  assert( !"SSL Server not yet implemented" );
}

/* Works like feof():
**
** Return true if end-of-input has been reached.
*/
int cgi_feof(void){
  if( !g.httpUseSSL ){
    return feof(g.httpIn);
  }
  assert( !"SSL Server not yet implemented" );
}

/* Works like fwrite():
**
** Try to output nmemb bytes of content.  Return the number of
** bytes actually written.
*/
static size_t cgi_fwrite(void *ptr, size_t nmemb){
  if( !g.httpUseSSL ){
    return fwrite(ptr, 1, nmemb, g.httpOut);
  }
  assert( !"SSL Server not yet implemented" );
}

/* Works like fflush():
**
** Make sure I/O has completed.
*/
static void cgi_fflush(void){
  if( !g.httpUseSSL ){
    fflush(g.httpOut);
  }
}


/*
** Generate the reply to a web request.  The output might be an
** full HTTP response, or a CGI response, depending on how things have
** be set up.
**
** The reply consists of a response header (an HTTP or CGI response header)

      total_size = rangeEnd - rangeStart; 
    }
    blob_appendf(&hdr, "Content-Length: %d\r\n", total_size);
  }else{
    total_size = 0;
  }
  blob_appendf(&hdr, "\r\n");
  cgi_fwrite(blob_buffer(&hdr), blob_size(&hdr));
  blob_reset(&hdr);
  if( total_size>0
   && iReplyStatus!=304
   && fossil_strcmp(P("REQUEST_METHOD"),"HEAD")!=0
  ){
    int i, size;
    for(i=0; i<2; i++){
      size = blob_size(&cgiContent[i]);
      if( size<=rangeStart ){
        rangeStart -= size;
      }else{
        int n = size - rangeStart;
        if( n>total_size ){
          n = total_size;
        }
        cgi_fwrite(blob_buffer(&cgiContent[i])+rangeStart, n);
        rangeStart = 0;
        total_size -= n;
      }
    }
  }
  cgi_fflush();
  CGIDEBUG(("-------- END cgi ---------\n"));

  /* After the webpage has been sent, do any useful background
  ** processing.
  */
  g.cgiOutput = 2;
  if( g.db!=0 && iReplyStatus==200 ){

    zType = g.zContentType;
  }else{
    g.zContentType = zType;
  }
  blob_zero(&g.cgiIn);
  if( len>0 && zType ){
    if( fossil_strcmp(zType, "application/x-fossil")==0 ){
      if( blob_read_from_cgi(&g.cgiIn, len)!=len ){
        malformed_request("CGI content-length mismatch");
      }
      blob_uncompress(&g.cgiIn, &g.cgiIn);
    }
#ifdef FOSSIL_ENABLE_JSON
    else if( noJson==0 && g.json.isJsonMode!=0
             && json_can_consume_content_type(zType)!=0 ){
      assert( !g.httpUseSSL );
      cgi_parse_POST_JSON(g.httpIn, (unsigned int)len);
      /*
       Potential TODOs:

       1) If parsing fails, immediately return an error response
       without dispatching the ostensibly-upcoming JSON API.
      */
      cgi_set_content_type(json_guess_content_type());
    }
#endif /* FOSSIL_ENABLE_JSON */
    else{
      blob_read_from_cgi(&g.cgiIn, len);
    }
  }
}

/*
** Decode POST parameter information in the cgiIn content, if any.
*/

*/
void cgi_handle_http_request(const char *zIpAddr){
  char *z, *zToken;
  int i;
  const char *zScheme = "http";
  char zLine[2000];     /* A single line of input. */
  g.fullHttpReply = 1;
  if( cgi_fgets(zLine, sizeof(zLine))==0 ){
    malformed_request("missing HTTP header");
  }
  blob_append(&g.httpHeader, zLine, -1);
  cgi_trace(zLine);
  zToken = extract_token(zLine, &z);
  if( zToken==0 ){
    malformed_request("malformed HTTP header");

    cgi_setenv("REMOTE_ADDR", zIpAddr);
    g.zIpAddr = fossil_strdup(zIpAddr);
  }


  /* Get all the optional fields that follow the first line.
  */
  while( cgi_fgets(zLine,sizeof(zLine)) ){
    char *zFieldName;
    char *zVal;

    cgi_trace(zLine);
    blob_append(&g.httpHeader, zLine, -1);
    zFieldName = extract_token(zLine,&zVal);
    if( zFieldName==0 || *zFieldName==0 ) break;

  static int nCycles = 0;
  static char *zCmd = 0;
  char *z, *zToken;
  const char *zType = 0;
  int i, content_length = 0;
  char zLine[2000];     /* A single line of input. */

  assert( !g.httpUseSSL );
#ifdef FOSSIL_ENABLE_JSON
  if( nCycles==0 ){ json_bootstrap_early(); }
#endif
  if( zIpAddr ){
    if( nCycles==0 ){
      cgi_setenv("REMOTE_ADDR", zIpAddr);
      g.zIpAddr = fossil_strdup(zIpAddr);

}

/*
** This routine handles the old fossil SSH probes
*/
char *cgi_handle_ssh_probes(char *zLine, int zSize, char *z, char *zToken){
  /* Start looking for probes */
  assert( !g.httpUseSSL );
  while( fossil_strcmp(zToken, "echo")==0 ){
    zToken = extract_token(z, &z);
    if( zToken==0 ){
      malformed_request("malformed probe");
    }
    if( fossil_strncmp(zToken, "test", 4)==0 ||
        fossil_strncmp(zToken, "probe-", 6)==0 ){

** This routine handles the old fossil SSH transport_flip
** and transport_open communications if detected.
*/
void cgi_handle_ssh_transport(const char *zCmd){
  char *z, *zToken;
  char zLine[2000];     /* A single line of input. */

  assert( !g.httpUseSSL );
  /* look for second newline of transport_flip */
  if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){
    malformed_request("incorrect transport_flip");
  }
  cgi_trace(zLine);
  zToken = extract_token(zLine, &z);
  if( zToken && strlen(zToken)==0 ){

void cgi_handle_scgi_request(void){
  char *zHdr;
  char *zToFree;
  int nHdr = 0;
  int nRead;
  int c, n, m;

  assert( !g.httpUseSSL );
  while( (c = fgetc(g.httpIn))!=EOF && fossil_isdigit((char)c) ){
    nHdr = nHdr*10 + (char)c - '0';
  }
  if( nHdr<16 ) malformed_request("SCGI header too short");
  zToFree = zHdr = fossil_malloc(nHdr);
  nRead = (int)fread(zHdr, 1, nHdr, g.httpIn);
  if( nRead<nHdr ) malformed_request("cannot read entire SCGI header");

  int xferPanic;          /* Write error messages in XFER protocol */
  int fullHttpReply;      /* True for full HTTP reply.  False for CGI reply */
  Th_Interp *interp;      /* The TH1 interpreter */
  char *th1Setup;         /* The TH1 post-creation setup script, if any */
  int th1Flags;           /* The TH1 integration state flags */
  FILE *httpIn;           /* Accept HTTP input from here */
  FILE *httpOut;          /* Send HTTP output here */
  int httpUseSSL;         /* True to use an SSL codec for HTTP traffic */
  int xlinkClusterOnly;   /* Set when cloning.  Only process clusters */
  int fTimeFormat;        /* 1 for UTC.  2 for localtime.  0 not yet selected */
  int *aCommitFile;       /* Array of files to be committed */
  int markPrivate;        /* All new artifacts are private if true */
  char *ckinLockFail;     /* Check-in lock failure received from server */
  int clockSkewSeen;      /* True if clocks on client and server out of sync */
  int wikiFlags;          /* Wiki conversion flags applied to %W */