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      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel (at) haxx.se>, et al.
      9  *
     10  * This software is licensed as described in the file COPYING, which
     11  * you should have received as part of this distribution. The terms
     12  * are also available at https://curl.haxx.se/docs/copyright.html.
     13  *
     14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     15  * copies of the Software, and permit persons to whom the Software is
     16  * furnished to do so, under the terms of the COPYING file.
     17  *
     18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     19  * KIND, either express or implied.
     20  *
     21  ***************************************************************************/
     22 #include "tool_setup.h"
     23 
     24 #include "tool_mfiles.h"
     25 
     26 #include "memdebug.h" /* keep this as LAST include */
     27 
     28 static void AppendNode(struct multi_files **first,
     29                        struct multi_files **last,
     30                        struct multi_files  *new)
     31 {
     32   DEBUGASSERT(((*first) && (*last)) || ((!*first) && (!*last)));
     33 
     34   if(*last)
     35     (*last)->next = new;
     36   else
     37     *first = new;
     38   *last = new;
     39 }
     40 
     41 /*
     42  * AddMultiFiles: Add a new list node possibly followed with a type_name.
     43  *
     44  * multi_first argument is the address of a pointer to the first element
     45  * of the multi_files linked list. A NULL pointer indicates empty list.
     46  *
     47  * multi_last argument is the address of a pointer to the last element
     48  * of the multi_files linked list. A NULL pointer indicates empty list.
     49  *
     50  * Pointers stored in multi_first and multi_last are modified while
     51  * function is executed. An out of memory condition free's the whole
     52  * list and returns with pointers stored in multi_first and multi_last
     53  * set to NULL and a NULL function result.
     54  *
     55  * Function returns same pointer as stored at multi_last.
     56  */
     57 
     58 struct multi_files *AddMultiFiles(const char *file_name,
     59                                   const char *type_name,
     60                                   const char *show_filename,
     61                                   struct multi_files **multi_first,
     62                                   struct multi_files **multi_last)
     63 {
     64   struct multi_files *multi;
     65   struct multi_files *multi_type;
     66   struct multi_files *multi_name;
     67 
     68   multi = calloc(1, sizeof(struct multi_files));
     69   if(multi) {
     70     multi->form.option = CURLFORM_FILE;
     71     multi->form.value = file_name;
     72     AppendNode(multi_first, multi_last, multi);
     73   }
     74   else {
     75     FreeMultiInfo(multi_first, multi_last);
     76     return NULL;
     77   }
     78 
     79   if(type_name) {
     80     multi_type = calloc(1, sizeof(struct multi_files));
     81     if(multi_type) {
     82       multi_type->form.option = CURLFORM_CONTENTTYPE;
     83       multi_type->form.value = type_name;
     84       AppendNode(multi_first, multi_last, multi_type);
     85     }
     86     else {
     87       FreeMultiInfo(multi_first, multi_last);
     88       return NULL;
     89     }
     90   }
     91 
     92   if(show_filename) {
     93     multi_name = calloc(1, sizeof(struct multi_files));
     94     if(multi_name) {
     95       multi_name->form.option = CURLFORM_FILENAME;
     96       multi_name->form.value = show_filename;
     97       AppendNode(multi_first, multi_last, multi_name);
     98     }
     99     else {
    100       FreeMultiInfo(multi_first, multi_last);
    101       return NULL;
    102     }
    103   }
    104 
    105   return *multi_last;
    106 }
    107 
    108 /*
    109  * FreeMultiInfo: Free the items of the list.
    110  */
    111 
    112 void FreeMultiInfo(struct multi_files **multi_first,
    113                    struct multi_files **multi_last)
    114 {
    115   struct multi_files *next;
    116   struct multi_files *item = *multi_first;
    117 
    118   while(item) {
    119     next = item->next;
    120     Curl_safefree(item);
    121     item = next;
    122   }
    123   *multi_first = NULL;
    124   if(multi_last)
    125     *multi_last = NULL;
    126 }
    127 
    128