nci-delete-assignment-group.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 *group_id = 0;
  40         char *target_arg = 0;
  41         long long target_ll = 0;
  42         char *target = 0;
  43         uint_fast8_t purge_arg = 0;
  44         size_t len = 0;
  45         char *built_uri = 0;
  46         struct curl_httppost *post = 0;
  47         struct curl_httppost *postend = 0;
  48         char *deleted_id = 0;
  49         int opt = 0;
  50
  51         setlocale(LC_ALL, "");
  52
  53         while ((opt = getopt(argc, argv, "c:g:t:p")) != -1) {
  54                 switch (opt) {
  55                 case 'c':
  56                         course_id = optarg;
  57                         break;
  58                 case 'g':
  59                         group_id = optarg;
  60                         break;
  61                 case 't':
  62                         target_arg = optarg;
  63                         break;
  64                 case 'p':
  65                         purge_arg = 1;
  66                         break;
  67                 default:
  68                         break;
  69                 }
  70         }
  71
  72         if (!course_id) {
  73                 ret = EINVAL;
  74                 fprintf(stderr, "course-id is mandatory\n");
  75                 goto cleanup;
  76         }
  77
  78         if (!target_arg &&
  79             !purge_arg) {
  80                 ret = EINVAL;
  81                 fprintf(stderr, "one of -t, -p is mandatory\n");
  82                 goto cleanup;
  83         } else if (target_arg &&
  84                    purge_arg) {
  85                 fprintf(stderr, "both -t and -p provided, ignoring -p\n");
  86                 purge_arg = 0;
  87         }
  88
  89         curl_global_init(CURL_GLOBAL_DEFAULT);
  90
  91         if (!(url_base = get_url_base())) {
  92                 ret = ENOENT;
  93
  94                 /* Error should have already been printed */
  95                 goto cleanup;
  96         }
  97
  98         if (!(auth_token = get_auth_token())) {
  99                 ret = ENOENT;
 100
 101                 /* Error should have already been printed */
 102                 goto cleanup;
 103         }
 104
 105         if (target_arg) {
 106                 target_ll = strtoll(target_arg, 0, 0);
 107                 len = snprintf(0, 0, "%lld", target_ll);
 108
 109                 if (len + 1 < len) {
 110                         ret = errno = EOVERFLOW;
 111                         perror(L(""));
 112                         goto cleanup;
 113                 }
 114
 115                 if (!(target = malloc(len + 1))) {
 116                         ret = errno;
 117                         perror(L("malloc"));
 118                         goto cleanup;
 119                 }
 120
 121                 sprintf(target, "%lld", target_ll);
 122
 123                 if (curl_formadd(&post, &postend, CURLFORM_PTRNAME,
 124                                  "move_assignments_to", CURLFORM_PTRCONTENTS,
 125                                  target,
 126                                  CURLFORM_END)) {
 127                         ret = errno;
 128                         perror(L("curl_formadd"));
 129                         goto cleanup;
 130                 }
 131         }
 132
 133         len = snprintf(0, 0, "%s/api/v1/courses/%s/assignment_groups/%s",
 134                        url_base, course_id, group_id);
 135
 136         if (len + 1 < len) {
 137                 ret = errno = EOVERFLOW;
 138                 perror(L(""));
 139                 goto cleanup;
 140         }
 141
 142         if (!(built_uri = malloc(len + 1))) {
 143                 ret = errno;
 144                 perror(L("malloc"));
 145                 goto cleanup;
 146         }
 147
 148         sprintf(built_uri, "%s/api/v1/courses/%s/assignment_groups/%s",
 149                 url_base, course_id, group_id);
 150
 151         if ((ret = send_and_id_scan(built_uri, auth_token, post, "DELETE",
 152                                     &deleted_id))) {
 153                 goto cleanup;
 154         }
 155
 156         if (deleted_id) {
 157                 printf("%s\n", deleted_id);
 158         }
 159
 160         ret = 0;
 161 cleanup:
 162         free(deleted_id);
 163         curl_formfree(post);
 164         free(built_uri);
 165         free(target);
 166         free(url_base);
 167         free(auth_token);
 168         curl_global_cleanup();
 169
 170         return ret;
 171 }