C++ checkprefix函数代码示例

bool output_expected(const char *url, const char *uploadfile)
{
  if(!uploadfile)
    return TRUE;  /* download */
  if(checkprefix("http://", url) || checkprefix("https://", url))
    return TRUE;   /* HTTP(S) upload */

  return FALSE; /* non-HTTP upload, probably no output should be expected */
}

CURLcode Curl_input_digest(struct connectdata *conn,
                           bool proxy,
                           const char *header) /* rest of the *-authenticate:
                                                  header */
{
  struct SessionHandle *data = conn->data;

  /* Point to the correct struct with this */
  struct digestdata *digest;

  if(proxy) {
    digest = &data->state.proxydigest;
  }
  else {
    digest = &data->state.digest;
  }

  if(!checkprefix("Digest", header))
    return CURLE_BAD_CONTENT_ENCODING;

  header += strlen("Digest");
  while(*header && ISSPACE(*header))
    header++;

  return Curl_sasl_decode_digest_http_message(header, digest);
}

CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
{
  struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
    &conn->data->state.negotiate;
  char *encoded = NULL;
  int len;

#ifdef HAVE_SPNEGO /* Handle SPNEGO */
  if(checkprefix("Negotiate", neg_ctx->protocol)) {
    ASN1_OBJECT *   object            = NULL;
    int             rc                = 1;
    unsigned char * spnegoToken       = NULL;
    size_t          spnegoTokenLength = 0;
    unsigned char * responseToken       = NULL;
    size_t          responseTokenLength = 0;

    responseToken = malloc(neg_ctx->output_token.length);
    if( responseToken == NULL)
      return CURLE_OUT_OF_MEMORY;
    memcpy(responseToken, neg_ctx->output_token.value,
           neg_ctx->output_token.length);
    responseTokenLength = neg_ctx->output_token.length;

    object=OBJ_txt2obj ("1.2.840.113554.1.2.2", 1);
    if(!makeSpnegoInitialToken (object,
                                 responseToken,
                                 responseTokenLength,
                                 &spnegoToken,
                                 &spnegoTokenLength)) {
      free(responseToken);
      responseToken = NULL;
      infof(conn->data, "Make SPNEGO Initial Token failed\n");
    }
    else {
      free(neg_ctx->output_token.value);
      responseToken = NULL;
      neg_ctx->output_token.value = malloc(spnegoTokenLength);
      memcpy(neg_ctx->output_token.value, spnegoToken,spnegoTokenLength);
      neg_ctx->output_token.length = spnegoTokenLength;
      free(spnegoToken);
      spnegoToken = NULL;
      infof(conn->data, "Make SPNEGO Initial Token succeeded\n");
    }
  }
#endif
  len = Curl_base64_encode(conn->data,
                           neg_ctx->output_token.value,
                           neg_ctx->output_token.length,
                           &encoded);

  if(len == 0)
    return CURLE_OUT_OF_MEMORY;

  conn->allocptr.userpwd =
    aprintf("%sAuthorization: %s %s\r\n", proxy ? "Proxy-" : "",
            neg_ctx->protocol, encoded);
  free(encoded);
  Curl_cleanup_negotiate (conn->data);
  return (conn->allocptr.userpwd == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
}

/*****************************************************************************
 *
 * Curl_cookie_init()
 *
 * Inits a cookie struct to read data from a local file. This is always
 * called before any cookies are set. File may be NULL.
 *
 * If 'newsession' is TRUE, discard all "session cookies" on read from file.
 *
 ****************************************************************************/
struct CookieInfo *Curl_cookie_init(struct SessionHandle *data,
                                    char *file,
                                    struct CookieInfo *inc,
                                    bool newsession)
{
  char line[MAX_COOKIE_LINE];
  struct CookieInfo *c;
  FILE *fp;
  bool fromfile=TRUE;
  
  if(NULL == inc) {
    /* we didn't get a struct, create one */
    c = (struct CookieInfo *)malloc(sizeof(struct CookieInfo));
    if(!c)
      return NULL; /* failed to get memory */
    memset(c, 0, sizeof(struct CookieInfo));
    c->filename = strdup(file?file:"none"); /* copy the name just in case */
  }
  else {
    /* we got an already existing one, use that */
    c = inc;
  }
  c->running = FALSE; /* this is not running, this is init */

  if(file && strequal(file, "-")) {
    fp = stdin;
    fromfile=FALSE;
  }
  else
    fp = file?fopen(file, "r"):NULL;

  c->newsession = newsession; /* new session? */

  if(fp) {
    char *lineptr;
    bool headerline;
    while(fgets(line, MAX_COOKIE_LINE, fp)) {
      if(checkprefix("Set-Cookie:", line)) {
        /* This is a cookie line, get it! */
        lineptr=&line[11];
        headerline=TRUE;
      }
      else {
        lineptr=line;
        headerline=FALSE;
      }
      while(*lineptr && isspace((int)*lineptr))
        lineptr++;

      Curl_cookie_add(data, c, headerline, lineptr, NULL, NULL);
    }
    if(fromfile)
      fclose(fp);
  }

  c->running = TRUE;          /* now, we're running */

  return c;
}

static enum protection_level
name_to_level(const char *name)
{
  int i;
  for(i = 0; i < (int)sizeof(level_names)/(int)sizeof(level_names[0]); i++)
    if(checkprefix(name, level_names[i].name))
      return level_names[i].level;
  return PROT_NONE;
}

double findformula(int i, char quan, char unit) {
    char num[100]; memset(num, 0, sizeof num);
    if(soal[i]==quan and soal[i+1]=='=') {
        int j=i+2,x=0;
        while(soal[j]!='m' and soal[j]!='k' and soal[j]!='M' and soal[j]!=unit) num[x++]=soal[j++];
    }
    double angka=atof(num);
    return checkprefix(soal[j], angka);
}

struct Cookie *Curl_cookie_getlist(struct CookieInfo *c,
                                   char *host, char *path, bool secure)
{
   struct Cookie *newco;
   struct Cookie *co;
   time_t now = time(NULL);
   struct Cookie *mainco=NULL;

   if(!c || !c->cookies)
      return NULL; /* no cookie struct or no cookies in the struct */

   co = c->cookies;

   while(co) {
     /* only process this cookie if it is not expired or had no expire
        date AND that if the cookie requires we're secure we must only
        continue if we are! */
     if( (co->expires<=0 || (co->expires> now)) &&
         (co->secure?secure:TRUE) ) {
       
       /* now check if the domain is correct */
       if(!co->domain ||
          (co->tailmatch && tailmatch(co->domain, host)) ||
          (!co->tailmatch && strequal(host, co->domain)) ) {
         /* the right part of the host matches the domain stuff in the
            cookie data */
         
         /* now check the left part of the path with the cookies path
            requirement */
         if(!co->path ||
            checkprefix(co->path, path) ) {

           /* and now, we know this is a match and we should create an
              entry for the return-linked-list */
           
           newco = (struct Cookie *)malloc(sizeof(struct Cookie));
           if(newco) {
             /* first, copy the whole source cookie: */
             memcpy(newco, co, sizeof(struct Cookie));

             /* then modify our next */
             newco->next = mainco;
             
             /* point the main to us */
             mainco = newco;
           }
         }
       }
     }
     co = co->next;
   }

   return mainco; /* return the new list */
}

CURLcode Curl_input_ntlm(struct connectdata *conn,
                         bool proxy,         /* if proxy or not */
                         const char *header) /* rest of the www-authenticate:
                                                header */
{
  /* point to the correct struct with this */
  struct ntlmdata *ntlm;
  CURLcode result = CURLE_OK;

#ifdef USE_NSS
  result = Curl_nss_force_init(conn->data);
  if(result)
    return result;
#endif

  ntlm = proxy ? &conn->proxyntlm : &conn->ntlm;

  /* skip initial whitespaces */
  while(*header && ISSPACE(*header))
    header++;

  if(checkprefix("NTLM", header)) {
    header += strlen("NTLM");

    while(*header && ISSPACE(*header))
      header++;

    if(*header) {
      result = Curl_ntlm_decode_type2_message(conn->data, header, ntlm);
      if(CURLE_OK != result)
        return result;

      ntlm->state = NTLMSTATE_TYPE2; /* We got a type-2 message */
    }
    else {
      if(ntlm->state == NTLMSTATE_TYPE3) {
        infof(conn->data, "NTLM handshake rejected\n");
        Curl_http_ntlm_cleanup(conn);
        ntlm->state = NTLMSTATE_NONE;
        return CURLE_REMOTE_ACCESS_DENIED;
      }
      else if(ntlm->state >= NTLMSTATE_TYPE1) {
        infof(conn->data, "NTLM handshake failure (internal error)\n");
        return CURLE_REMOTE_ACCESS_DENIED;
      }

      ntlm->state = NTLMSTATE_TYPE1; /* We should send away a type-1 */
    }
  }

  return result;
}

int formparse(struct Configurable *config,
              const char *input,
              struct curl_httppost **httppost,
              struct curl_httppost **last_post,
              bool literal_value)
{
  /* nextarg MUST be a string in the format 'name=contents' and we'll
     build a linked list with the info */
  char name[256];
  char *contents = NULL;
  char major[128];
  char minor[128];
  char *contp;
  const char *type = NULL;
  char *sep;
  char *sep2;

  if((1 == sscanf(input, "%255[^=]=", name)) &&
     ((contp = strchr(input, '=')) != NULL)) {
    /* the input was using the correct format */

    /* Allocate the contents */
    contents = strdup(contp+1);
    if(!contents) {
      fprintf(config->errors, "out of memory\n");
      return 1;
    }
    contp = contents;

    if('@' == contp[0] && !literal_value) {

      /* we use the @-letter to indicate file name(s) */

      struct multi_files *multi_start = NULL;
      struct multi_files *multi_current = NULL;

      contp++;

      do {
        /* since this was a file, it may have a content-type specifier
           at the end too, or a filename. Or both. */
        char *ptr;
        char *filename = NULL;

        sep = strchr(contp, FORM_TYPE_SEPARATOR);
        sep2 = strchr(contp, FORM_FILE_SEPARATOR);

        /* pick the closest */
        if(sep2 && (sep2 < sep)) {
          sep = sep2;

          /* no type was specified! */
        }

        type = NULL;

        if(sep) {

          /* if we got here on a comma, don't do much */
          if(FORM_FILE_SEPARATOR == *sep)
            ptr = NULL;
          else
            ptr = sep+1;

          *sep = '\0'; /* terminate file name at separator */

          while(ptr && (FORM_FILE_SEPARATOR!= *ptr)) {

            /* pass all white spaces */
            while(ISSPACE(*ptr))
              ptr++;

            if(checkprefix("type=", ptr)) {
              /* set type pointer */
              type = &ptr[5];

              /* verify that this is a fine type specifier */
              if(2 != sscanf(type, "%127[^/]/%127[^;,\n]",
                             major, minor)) {
                warnf(config, "Illegally formatted content-type field!\n");
                Curl_safefree(contents);
                FreeMultiInfo(&multi_start, &multi_current);
                return 2; /* illegal content-type syntax! */
              }

              /* now point beyond the content-type specifier */
              sep = (char *)type + strlen(major)+strlen(minor)+1;

              /* there's a semicolon following - we check if it is a filename
                 specified and if not we simply assume that it is text that
                 the user wants included in the type and include that too up
                 to the next zero or semicolon. */
              if((*sep==';') && !checkprefix(";filename=", sep)) {
                sep2 = strchr(sep+1, ';');
                if(sep2)
                  sep = sep2;
                else
                  sep = sep + strlen(sep); /* point to end of string */
              }

//.........这里部分代码省略.........

int formparse(struct OperationConfig *config,
              const char *input,
              struct curl_httppost **httppost,
              struct curl_httppost **last_post,
              bool literal_value)
{
  /* nextarg MUST be a string in the format 'name=contents' and we'll
     build a linked list with the info */
  char name[256];
  char *contents = NULL;
  char type_major[128] = "";
  char type_minor[128] = "";
  char *contp;
  const char *type = NULL;
  char *sep;

  if((1 == sscanf(input, "%255[^=]=", name)) &&
     ((contp = strchr(input, '=')) != NULL)) {
    /* the input was using the correct format */

    /* Allocate the contents */
    contents = strdup(contp+1);
    if(!contents) {
      fprintf(config->global->errors, "out of memory\n");
      return 1;
    }
    contp = contents;

    if('@' == contp[0] && !literal_value) {

      /* we use the @-letter to indicate file name(s) */

      struct multi_files *multi_start = NULL;
      struct multi_files *multi_current = NULL;

      char *ptr = contp;
      char *end = ptr + strlen(ptr);

      do {
        /* since this was a file, it may have a content-type specifier
           at the end too, or a filename. Or both. */
        char *filename = NULL;
        char *word_end;
        bool semicolon;

        type = NULL;

        ++ptr;
        contp = get_param_word(&ptr, &word_end);
        semicolon = (';' == *ptr) ? TRUE : FALSE;
        *word_end = '\0'; /* terminate the contp */

        /* have other content, continue parse */
        while(semicolon) {
          /* have type or filename field */
          ++ptr;
          while(*ptr && (ISSPACE(*ptr)))
            ++ptr;

          if(checkprefix("type=", ptr)) {
            /* set type pointer */
            type = &ptr[5];

            /* verify that this is a fine type specifier */
            if(2 != sscanf(type, "%127[^/]/%127[^;,\n]",
                           type_major, type_minor)) {
              warnf(config, "Illegally formatted content-type field!\n");
              Curl_safefree(contents);
              FreeMultiInfo(&multi_start, &multi_current);
              return 2; /* illegal content-type syntax! */
            }

            /* now point beyond the content-type specifier */
            sep = (char *)type + strlen(type_major)+strlen(type_minor)+1;

            /* there's a semicolon following - we check if it is a filename
               specified and if not we simply assume that it is text that
               the user wants included in the type and include that too up
               to the next sep. */
            ptr = sep;
            if(*sep==';') {
              if(!checkprefix(";filename=", sep)) {
                ptr = sep + 1;
                (void)get_param_word(&ptr, &sep);
                semicolon = (';' == *ptr) ? TRUE : FALSE;
              }
            }
            else
              semicolon = FALSE;

            if(*sep)
              *sep = '\0'; /* zero terminate type string */
          }
          else if(checkprefix("filename=", ptr)) {
            ptr += 9;
            filename = get_param_word(&ptr, &word_end);
            semicolon = (';' == *ptr) ? TRUE : FALSE;
            *word_end = '\0';
          }
          else {
//.........这里部分代码省略.........

/*****************************************************************************
 *
 * Curl_cookie_init()
 *
 * Inits a cookie struct to read data from a local file. This is always
 * called before any cookies are set. File may be NULL.
 *
 * If 'newsession' is TRUE, discard all "session cookies" on read from file.
 *
 * Returns NULL on out of memory. Invalid cookies are ignored.
 ****************************************************************************/
struct CookieInfo *Curl_cookie_init(struct Curl_easy *data,
                                    const char *file,
                                    struct CookieInfo *inc,
                                    bool newsession)
{
  struct CookieInfo *c;
  FILE *fp = NULL;
  bool fromfile = TRUE;
  char *line = NULL;

  if(NULL == inc) {
    /* we didn't get a struct, create one */
    c = calloc(1, sizeof(struct CookieInfo));
    if(!c)
      return NULL; /* failed to get memory */
    c->filename = strdup(file?file:"none"); /* copy the name just in case */
    if(!c->filename)
      goto fail; /* failed to get memory */
  }
  else {
    /* we got an already existing one, use that */
    c = inc;
  }
  c->running = FALSE; /* this is not running, this is init */

  if(file && !strcmp(file, "-")) {
    fp = stdin;
    fromfile = FALSE;
  }
  else if(file && !*file) {
    /* points to a "" string */
    fp = NULL;
  }
  else
    fp = file?fopen(file, FOPEN_READTEXT):NULL;

  c->newsession = newsession; /* new session? */

  if(fp) {
    char *lineptr;
    bool headerline;

    line = malloc(MAX_COOKIE_LINE);
    if(!line)
      goto fail;
    while(get_line(line, MAX_COOKIE_LINE, fp)) {
      if(checkprefix("Set-Cookie:", line)) {
        /* This is a cookie line, get it! */
        lineptr = &line[11];
        headerline = TRUE;
      }
      else {
        lineptr = line;
        headerline = FALSE;
      }
      while(*lineptr && ISBLANK(*lineptr))
        lineptr++;

      Curl_cookie_add(data, c, headerline, TRUE, lineptr, NULL, NULL);
    }
    free(line); /* free the line buffer */
    remove_expired(c); /* run this once, not on every cookie */

    if(fromfile)
      fclose(fp);
  }

  c->running = TRUE;          /* now, we're running */

  return c;

fail:
  free(line);
  if(!inc)
    /* Only clean up if we allocated it here, as the original could still be in
     * use by a share handle */
    Curl_cookie_cleanup(c);
  if(fromfile && fp)
    fclose(fp);
  return NULL; /* out of memory */
}

/* returning zero (0) means success, everything else is treated as "failure"
   with no care exactly what the failure was */
int Curl_input_negotiate(struct connectdata *conn, bool proxy,
                         const char *header)
{
  struct SessionHandle *data = conn->data;
  struct negotiatedata *neg_ctx = proxy?&data->state.proxyneg:
    &data->state.negotiate;
  OM_uint32 major_status, minor_status, discard_st, min_stat;
  gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER;
  gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER;
  int ret;
  size_t len;
  size_t rawlen = 0;
  bool gss;
  const char* protocol;
  CURLcode error;

  while(*header && ISSPACE(*header))
    header++;
  if(checkprefix("GSS-Negotiate", header)) {
    protocol = "GSS-Negotiate";
    gss = TRUE;
  }
  else if(checkprefix("Negotiate", header)) {
    protocol = "Negotiate";
    gss = FALSE;
  }
  else
    return -1;

  if(neg_ctx->context) {
    if(neg_ctx->gss != gss) {
      return -1;
    }
  }
  else {
    neg_ctx->protocol = protocol;
    neg_ctx->gss = gss;
  }

  if(neg_ctx->context && neg_ctx->status == GSS_S_COMPLETE) {
    /* We finished successfully our part of authentication, but server
     * rejected it (since we're again here). Exit with an error since we
     * can't invent anything better */
    Curl_cleanup_negotiate(data);
    return -1;
  }

	if(neg_ctx->server_name == NULL &&
	  (ret = get_gss_name(conn, proxy, &neg_ctx->server_name)))
	return ret;
  	
  header += strlen(neg_ctx->protocol);
  while(*header && ISSPACE(*header))
    header++;

  len = strlen(header);
  if(len > 0) {
    error = Curl_base64_decode(header,
                               (unsigned char **)&input_token.value, &rawlen);
    if(error || rawlen == 0)
      return -1;
    input_token.length = rawlen;

    DEBUGASSERT(input_token.value != NULL);

#ifdef HAVE_SPNEGO /* Handle SPNEGO */
    if(checkprefix("Negotiate", header)) {
      unsigned char  *spnegoToken       = NULL;
      size_t          spnegoTokenLength = 0;
      gss_buffer_desc mechToken         = GSS_C_EMPTY_BUFFER;

      spnegoToken = malloc(input_token.length);
      if(spnegoToken == NULL) {
        Curl_safefree(input_token.value);
        return CURLE_OUT_OF_MEMORY;
      }
      memcpy(spnegoToken, input_token.value, input_token.length);
      spnegoTokenLength = input_token.length;

      if(!parseSpnegoTargetToken(spnegoToken,
                                 spnegoTokenLength,
                                 NULL,
                                 NULL,
                                 (unsigned char**)&mechToken.value,
                                 &mechToken.length,
                                 NULL,
                                 NULL)) {
        Curl_safefree(spnegoToken);
        infof(data, "Parse SPNEGO Target Token failed\n");
      }
      else if(!mechToken.value || !mechToken.length) {
        Curl_safefree(spnegoToken);
        if(mechToken.value)
          gss_release_buffer(&discard_st, &mechToken);
        infof(data, "Parse SPNEGO Target Token succeeded (NULL token)\n");
      }
      else {
        Curl_safefree(spnegoToken);
//.........这里部分代码省略.........

size_t tool_header_cb(void *ptr, size_t size, size_t nmemb, void *userdata)
{
  struct OutStruct *outs = userdata;
  const char *str = ptr;
  const size_t cb = size * nmemb;
  const char *end = (char*)ptr + cb;

  /*
   * Once that libcurl has called back tool_header_cb() the returned value
   * is checked against the amount that was intended to be written, if
   * it does not match then it fails with CURLE_WRITE_ERROR. So at this
   * point returning a value different from sz*nmemb indicates failure.
   */
  size_t failure = (size * nmemb) ? 0 : 1;

  if(!outs->config)
    return failure;

#ifdef DEBUGBUILD
  if(size * nmemb > (size_t)CURL_MAX_HTTP_HEADER) {
    warnf(outs->config, "Header data exceeds single call write limit!\n");
    return failure;
  }
#endif

  if((cb > 20) && checkprefix("Content-disposition:", str)) {
    const char *p = str + 20;

    /* look for the 'filename=' parameter
       (encoded filenames (*=) are not supported) */
    for(;;) {
      char *filename;
      size_t len;

      while(*p && (p < end) && !ISALPHA(*p))
        p++;
      if(p > end - 9)
        break;

      if(memcmp(p, "filename=", 9)) {
        /* no match, find next parameter */
        while((p < end) && (*p != ';'))
          p++;
        continue;
      }
      p += 9;

      /* this expression below typecasts 'cb' only to avoid
         warning: signed and unsigned type in conditional expression
      */
      len = (ssize_t)cb - (p - str);
      filename = parse_filename(p, len);
      if(filename) {
        outs->filename = filename;
        outs->alloc_filename = TRUE;
        outs->s_isreg = TRUE;
        outs->fopened = FALSE;
        outs->stream = NULL;
        break;
      }
      else
        return failure;
    }
  }

  return cb;
}

int Curl_input_negotiate(struct connectdata *conn, char *header)
{
  struct negotiatedata *neg_ctx = &conn->data->state.negotiate;
  OM_uint32 major_status, minor_status, minor_status2;
  gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER;
  gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER;
  int ret;
  size_t len;
  bool gss;
  const char* protocol;

  while(*header && ISSPACE(*header))
    header++;
  if(checkprefix("GSS-Negotiate", header)) {
    protocol = "GSS-Negotiate";
    gss = TRUE;
  }
  else if (checkprefix("Negotiate", header)) {
    protocol = "Negotiate";
    gss = FALSE;
  }
  else
    return -1;

  if (neg_ctx->context) {
    if (neg_ctx->gss != gss) {
      return -1;
    }
  }
  else {
    neg_ctx->protocol = protocol;
    neg_ctx->gss = gss;
  }

  if (neg_ctx->context && neg_ctx->status == GSS_S_COMPLETE) {
    /* We finished succesfully our part of authentication, but server
     * rejected it (since we're again here). Exit with an error since we
     * can't invent anything better */
    Curl_cleanup_negotiate(conn->data);
    return -1;
  }

  if (neg_ctx->server_name == NULL &&
      (ret = get_gss_name(conn, &neg_ctx->server_name)))
    return ret;

  header += strlen(neg_ctx->protocol);
  while(*header && ISSPACE(*header))
    header++;

  len = strlen(header);
  if (len > 0) {
    int rawlen = Curl_base64_decode(header, (unsigned char **)&input_token.value);
    if (rawlen < 0)
      return -1;
    input_token.length = rawlen;

#ifdef HAVE_SPNEGO /* Handle SPNEGO */
    if (checkprefix("Negotiate", header)) {
        ASN1_OBJECT *   object            = NULL;
        int             rc                = 1;
        unsigned char * spnegoToken       = NULL;
        size_t          spnegoTokenLength = 0;
        unsigned char * mechToken         = NULL;
        size_t          mechTokenLength   = 0;

        spnegoToken = malloc(input_token.length);
        if (input_token.value == NULL)
          return ENOMEM;
        spnegoTokenLength = input_token.length;

        object = OBJ_txt2obj ("1.2.840.113554.1.2.2", 1);
        if (!parseSpnegoTargetToken(spnegoToken,
                                    spnegoTokenLength,
                                    NULL,
                                    NULL,
                                    &mechToken,
                                    &mechTokenLength,
                                    NULL,
                                    NULL)) {
          free(spnegoToken);
          spnegoToken = NULL;
          infof(conn->data, "Parse SPNEGO Target Token failed\n");
        }
        else {
          free(input_token.value);
          input_token.value = NULL;
          input_token.value = malloc(mechTokenLength);
          memcpy(input_token.value, mechToken,mechTokenLength);
          input_token.length = mechTokenLength;
          free(mechToken);
          mechToken = NULL;
          infof(conn->data, "Parse SPNEGO Target Token succeeded\n");
        }
    }
#endif
  }

  major_status = gss_init_sec_context(&minor_status,
                                      GSS_C_NO_CREDENTIAL,
//.........这里部分代码省略.........

//.........这里部分代码省略.........
              if(s->line_start[1] == '\n') {
                /* this can only be a LF if the letter at index 0
                   was a CR */
                s->line_start++;
              }

              /* now parse the chunked piece of data so that we can
                 properly tell when the stream ends */
              r = Curl_httpchunk_read(conn, s->line_start + 1, 1, &gotbytes);
              if(r == CHUNKE_STOP) {
                /* we're done reading chunks! */
                infof(data, "chunk reading DONE\n");
                s->keepon = FALSE;
                /* we did the full CONNECT treatment, go to COMPLETE */
                s->tunnel_state = TUNNEL_COMPLETE;
              }
            }
            else {
              /* without content-length or chunked encoding, we
                 can't keep the connection alive since the close is
                 the end signal so we bail out at once instead */
              s->keepon = FALSE;
            }
          }
          else
            s->keepon = FALSE;
          if(!s->cl)
            /* we did the full CONNECT treatment, go to COMPLETE */
            s->tunnel_state = TUNNEL_COMPLETE;
          continue;
        }

        s->line_start[s->perline] = 0; /* zero terminate the buffer */
        if((checkprefix("WWW-Authenticate:", s->line_start) &&
            (401 == k->httpcode)) ||
           (checkprefix("Proxy-authenticate:", s->line_start) &&
            (407 == k->httpcode))) {

          bool proxy = (k->httpcode == 407) ? TRUE : FALSE;
          char *auth = Curl_copy_header_value(s->line_start);
          if(!auth)
            return CURLE_OUT_OF_MEMORY;

          result = Curl_http_input_auth(conn, proxy, auth);

          free(auth);

          if(result)
            return result;
        }
        else if(checkprefix("Content-Length:", s->line_start)) {
          if(k->httpcode/100 == 2) {
            /* A client MUST ignore any Content-Length or Transfer-Encoding
               header fields received in a successful response to CONNECT.
               "Successful" described as: 2xx (Successful). RFC 7231 4.3.6 */
            infof(data, "Ignoring Content-Length in CONNECT %03d response\n",
                  k->httpcode);
          }
          else {
            (void)curlx_strtoofft(s->line_start +
                                  strlen("Content-Length:"), NULL, 10, &s->cl);
          }
        }
        else if(Curl_compareheader(s->line_start, "Connection:", "close"))
          s->close_connection = TRUE;
        else if(checkprefix("Transfer-Encoding:", s->line_start)) {