libapreq(3)

NAME
libapreq - Apache Request C Library

SYNOPSIS

DESCRIPTION

ApacheRequest

req->parms
    This field is an Apache table that holds the parsed contents of GET and POST requests. Example:

     table *data = req->parms;
     ap_table_set(data, "Key", "Value");

req->post_max
ApacheRequest_set_post_max(req, max)
    Limit the size of POST data. ApacheRequest_parse will return an error code if the size is exceeded:

     int status;
     ApacheRequest *req = ApacheRequest_new(r);

     req->post_max = 1204;
     if((status = ApacheRequest_parse(req)) != OK) {
         char *errmsg = ap_table_get(r->notes, "error-notes");
         ...
         return status;
     }

req->disable_uploads
    Disable file uploads. ApacheRequest_parse will return an error code if a file upload is attempted:

     int status;
     ApacheRequest *req = ApacheRequest_new(r);

     req->disable_uploads = 1;
     if((status = ApacheRequest_parse(req)) != OK) {
         char *errmsg = ap_table_get(r->notes, "error-notes");
         ...
         return status;
     }

req->temp_dir
ApacheRequest_set_temp_dir(req, dir)
    Sets the directory where upload files are spooled.

      char dir[] = "/usr/tmp";
      req->temp_dir = dir;

req->hook_data
req->upload_hook
    Redirects upload data to be processed by the hook.

      req->hook_data = (void *) data;
      req->upload_hook = (int(*)(void*,char*,int,ApacheUpload*)) func;

    In this case

      func(req->hook_data,buffer,bufsize,upload);

    will be called repeatedly during the file upload instead of writing the data to a temp file.

  ApacheRequest *ApacheRequest_new (request_rec *r)
This function creates a new ApacheRequest object using the given request_rec structure:

 ApacheRequest *req = ApacheRequest_new(r);

  int ApacheRequest_parse (ApacheRequest *req)
If the request method is GET or POST, the query string arguments and the client form data will be read, parsed and saved. In addition, if the request method is POST and the Content-type is multipart/form-data, the uploaded files will be written to temporary files which can be accessed with the upload field names. The return value is OK on success, otherwise an error code that your handler should return.

  const char *ApacheRequest_param (ApacheRequest *req, const char *key)
This function will return the value of the given parameter key:

 const char *value = ApacheRequest_param(req, "Key");

  array_header *ApacheRequest_params (ApacheRequest *req, const char *key)
This function will return an array_header of values for the given parameter key:

 array_header *values = ApacheRequest_params(req, "Key");

  char *ApacheRequest_params_as_string (ApacheRequest *req, const char *key)
This function will format multi-value parmeters into a comma delimited string.

 char *list = ApacheRequest_params_as_string(req, "Key");

  ApacheUpload *upload = ApacheRequest_upload (ApacheRequest *req)
If the request Content-type was that of multipart/form-data, this will return an ApacheUpload pointer containing the upload data, NULL otherwise. See ApacheUpload.

 ApacheUpload *upload = ApacheRequest_upload(req);

ApacheUpload
The ApacheUpload structure holds all information for all uploaded files and is accessed via the upload field of an ApacheRequest structure.

upload->name
    The name of the filefield parameter:

     char *name = upload->name;

upload->filename
    The name of the upload file as reported by the client:

     char *filename = upload->filename;

upload->fp
    A file pointer to the uploaded file:

     FILE *fp = upload->fp;

upload->tempname
    The name of the temporary upload file on the server:

    char *tempname = upload->tempname;

upload->size
    The size of the uploaded file in bytes:

     long size = upload->size;

upload->info
    The additional header information for the uploaded file:

     table *info = upload->info;
     const char *type = ap_table_get(info, "Content-type");

upload->next
    Pointer to the next ApacheUpload structure if multiple files were uploaded:

        ApacheUpload *uptr;
        for (uptr = ApacheRequest_upload(req); uptr; uptr = uptr->next) {
            char *name = uptr->name;
            FILE *fp   = uptr->fp;
            ...
        }

  ApacheUpload *ApacheUpload_find (ApacheUpload *upload, char *name)
Returns the ApacheUpload pointer associated with name or NULL if name is not found in the list:

 ApacheUpload *upload = ApacheUpload_find(upload, name);

  const char *ApacheUpload_info (ApacheUpload *upload, char *key)
Shortcut for accessing the info table:

 const char *type = ApacheUpload_info(upload, "Content-Type");

  const char *ApacheUpload_type (ApacheUpload *upload)
Shortcut for accessing the uploaded file Content-Type:

 const char *type = ApacheUpload_type(upload);

ApacheCookie

  ApacheCookie *ApacheCookie_new (request_rec *r, ...)
This function creates a new ApacheCookie object, using the given request_request and optional attribute arguments which are as follows:

-name
    Sets the name field to the given value.

-value
    Adds the value to values field.

-expires
    Sets the expires field to the calculated date string. See ApacheCookie_expires for a listing of format options. The default is NULL.

-domain
    Sets the domain field to the given value. The default is NULL.

-path
    Sets the path field to the given value. The default path is derived from the requested uri.

-secure
    Sets the secure field to true or false using a given string value of On or Off. The default is Off.

Example:

 ApacheCookie *c = ApacheCookie_new(r,
                        "-name",    "foo",
                        "-value",   "bar",
                        "-expires", "+3M",
                        "-domain",  ".cp.net",
                        "-path",    "/mypath/database",
                        "-secure",  "On",
                        NULL);

  char *ApacheCookie_attr (ApacheCookie *c, char *key, char *val)
This function is used to get or set a cookie attribute pair, accepting the same attributes as the list above. Example:

 char *name = ApacheCookie_attr(c, "-name"); /* same as c->name */
 (void *)ApacheCookie_attr(c, "-expires", "+3h");

  ApacheCookieJar *ApacheCookie_parse (request_rec *r, const char *data)
This function parses the given data string or the incoming Cookie header, returning an ApacheCookieJar of ApacheCookie objects.

Example:

 int i;
 ApacheCookieJar *cookies = ApacheCookie_parse(r, NULL);
 for (i = 0; i < ApacheCookieJarItems(cookies); i++) {
     ApacheCookie *c = ApacheCookieJarFetch(cookies, i);
     int j;
     for (j = 0; j < ApacheCookieItems(c); j++) {
         char *name = c->name;
         char *value = ApacheCookieFetch(c, j);
         ...
     }
 }

  int ApacheCookieItems (ApacheCookie *c)
The number of values for the given cookie.

  char *ApacheCookieFetch (ApacheCookie *c, int n)
The nth value for the given cookie.

  void ApacheCookieAdd (ApacheCookie *c, char *value)
Add a new value to the cookie.

  int ApacheCookieJarItems (ApacheCookieJar *cookies)
The number of cookies in the given cookie jar.

  ApacheCookie *ApacheCookieJarFetch (ApacheCookieJar *cookies, int n)
The nth cookie in the given cookie jar.

  void ApacheCookieJarAdd (ApacheCookieJar *cookies, ApacheCookie *c)
Add a new cookie to the cookie jar.

  char *ApacheCookie_expires (ApacheCookie *c, char *time_str)
This function gets or sets the expiration date for cookie. The following forms are all valid for the time_str parmeter:

        +30s                              30 seconds from now
        +10m                              ten minutes from now
        +1h                               one hour from now
        -1d                               yesterday (i.e. "ASAP!")
        now                               immediately
        +3M                               in three months
        +10y                              in ten years time
        Thursday, 25-Apr-1999 00:40:33 GMT  at the indicated time & date

  void ApacheCookie_bake (ApacheCookie *c)
Put cookie in the oven to bake. (Add a Set-Cookie header to the outgoing headers table.)

 ApacheCookie_bake(c);

  char *ApacheCookie_as_string (ApacheCookie *c)
Returns a string version of the cookie:

 ap_table_add(r->headers_out, "Set-Cookie", ApacheCookie_as_string(c));

BUGS

•   multi-select file uploads are currently unsupported

•   header-folding is unsupported for multipart/form-data

•   newer XML-based MIME-encodings are not supported

CREDITS
This library is based on Perl modules by Lincoln Stein.

LICENSE
  Copyright 2000-2004  The Apache Software Foundation

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

POD ERRORS
Hey! The above document had some coding errors, which are explained below:

Around line 209:
    You forgot a '=back' before '=head2'

Around line 339:
    =back without =over