nci-delete-assignment.c

   1 /*
   2  * Copyright (c) 2016, S. Gilles <sgilles@math.umd.edu>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software
   5  * for any purpose with or without fee is hereby granted, provided
   6  * that the above copyright notice and this permission notice appear
   7  * in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
  10  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  11  * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
  12  * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
  13  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
  14  * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
  15  * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  16  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 #include <errno.h>
  19 #include <locale.h>
  20 #include <stdint.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 #include <curl/curl.h>
  27 #include <yajl_parse.h>
  28
  29 #include "macros.h"
  30 #include "util.h"
  31
  32 int main(int argc, char **argv)
  33 {
  34         int ret = EINVAL;
  35         char *url_base = 0;
  36         char *auth_token = 0;
  37         char *course_id = 0;
  38         char *assignment_id = 0;
  39         size_t len = 0;
  40         char *built_uri = 0;
  41         char *deleted_id = 0;
  42         int opt = 0;
  43
  44         setlocale(LC_ALL, "");
  45
  46         while ((opt = getopt(argc, argv, "c:a:")) != -1) {
  47                 switch (opt) {
  48                 case 'c':
  49                         course_id = optarg;
  50                         break;
  51                 case 'a':
  52                         assignment_id = optarg;
  53                         break;
  54                 default:
  55                         break;
  56                 }
  57         }
  58
  59         if (!course_id) {
  60                 ret = EINVAL;
  61                 fprintf(stderr, "course-id is mandatory\n");
  62                 goto cleanup;
  63         }
  64
  65         if (!assignment_id) {
  66                 ret = EINVAL;
  67                 fprintf(stderr, "assignment-id is mandatory\n");
  68                 goto cleanup;
  69         }
  70
  71         curl_global_init(CURL_GLOBAL_DEFAULT);
  72
  73         if (!(url_base = get_url_base())) {
  74                 ret = ENOENT;
  75
  76                 /* Error should have already been printed */
  77                 goto cleanup;
  78         }
  79
  80         if (!(auth_token = get_auth_token())) {
  81                 ret = ENOENT;
  82
  83                 /* Error should have already been printed */
  84                 goto cleanup;
  85         }
  86
  87         len = snprintf(0, 0, "%s/api/v1/courses/%s/assignments/%s", url_base,
  88                        course_id, assignment_id);
  89
  90         if (!(built_uri = malloc(len + 1))) {
  91                 ret = errno;
  92                 perror(L("malloc"));
  93                 goto cleanup;
  94         }
  95
  96         sprintf(built_uri, "%s/api/v1/courses/%s/assignments/%s", url_base,
  97                 course_id, assignment_id);
  98
  99         if ((ret = send_and_id_scan(built_uri, auth_token, 0, "DELETE",
 100                                     &deleted_id))) {
 101                 goto cleanup;
 102         }
 103
 104         if (deleted_id) {
 105                 printf("%s\n", deleted_id);
 106         }
 107
 108         ret = 0;
 109 cleanup:
 110         free(deleted_id);
 111         free(built_uri);
 112         free(url_base);
 113         free(auth_token);
 114         curl_global_cleanup();
 115
 116         return ret;
 117 }