nci-delete-assignment.c

   1 /*
   2  * Copyright (c) 2016-2019 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
  33 main(int argc, char **argv)
  34 {
  35         int ret = EINVAL;
  36         char *url_base = 0;
  37         char *auth_token = 0;
  38         char *course_id = 0;
  39         char *assignment_id = 0;
  40         size_t len = 0;
  41         char *built_uri = 0;
  42         char *deleted_id = 0;
  43         int opt = 0;
  44
  45         setlocale(LC_ALL, "");
  46
  47         while ((opt = getopt(argc, argv, "c:a:")) != -1) {
  48                 switch (opt) {
  49                 case 'c':
  50                         course_id = optarg;
  51                         break;
  52                 case 'a':
  53                         assignment_id = optarg;
  54                         break;
  55                 default:
  56                         break;
  57                 }
  58         }
  59
  60         if (!course_id) {
  61                 ret = EINVAL;
  62                 fprintf(stderr, "course-id is mandatory\n");
  63                 goto cleanup;
  64         }
  65
  66         if (!assignment_id) {
  67                 ret = EINVAL;
  68                 fprintf(stderr, "assignment-id is mandatory\n");
  69                 goto cleanup;
  70         }
  71
  72         curl_global_init(CURL_GLOBAL_DEFAULT);
  73
  74         if (!(url_base = get_url_base())) {
  75                 ret = ENOENT;
  76
  77                 /* Error should have already been printed */
  78                 goto cleanup;
  79         }
  80
  81         if (!(auth_token = get_auth_token())) {
  82                 ret = ENOENT;
  83
  84                 /* Error should have already been printed */
  85                 goto cleanup;
  86         }
  87
  88         len = snprintf(0, 0, "%s/api/v1/courses/%s/assignments/%s", url_base,
  89                        course_id, assignment_id);
  90
  91         if (len + 1 < len) {
  92                 ret = errno = EOVERFLOW;
  93                 perror(L(""));
  94                 goto cleanup;
  95         }
  96
  97         if (!(built_uri = malloc(len + 1))) {
  98                 ret = errno;
  99                 perror(L("malloc"));
 100                 goto cleanup;
 101         }
 102
 103         sprintf(built_uri, "%s/api/v1/courses/%s/assignments/%s", url_base,
 104                 course_id, assignment_id);
 105
 106         if ((ret = send_and_id_scan(built_uri, auth_token, 0, "DELETE",
 107                                     &deleted_id))) {
 108                 goto cleanup;
 109         }
 110
 111         if (deleted_id) {
 112                 printf("%s\n", deleted_id);
 113         }
 114
 115         ret = 0;
 116 cleanup:
 117         free(deleted_id);
 118         free(built_uri);
 119         free(url_base);
 120         free(auth_token);
 121         curl_global_cleanup();
 122
 123         return ret;
 124 }