nci-delete-assignment-group.c

   1 /*
   2  * Copyright (c) 2016-2018 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 *group_id = 0;
  39         char *target_arg = 0;
  40         long long target_ll = 0;
  41         char *target = 0;
  42         uint_fast8_t purge_arg = 0;
  43         size_t len = 0;
  44         char *built_uri = 0;
  45         struct curl_httppost *post = 0;
  46         struct curl_httppost *postend = 0;
  47         char *deleted_id = 0;
  48         int opt = 0;
  49
  50         setlocale(LC_ALL, "");
  51
  52         while ((opt = getopt(argc, argv, "c:g:t:p")) != -1) {
  53                 switch (opt) {
  54                 case 'c':
  55                         course_id = optarg;
  56                         break;
  57                 case 'g':
  58                         group_id = optarg;
  59                         break;
  60                 case 't':
  61                         target_arg = optarg;
  62                         break;
  63                 case 'p':
  64                         purge_arg = 1;
  65                         break;
  66                 default:
  67                         break;
  68                 }
  69         }
  70
  71         if (!course_id) {
  72                 ret = EINVAL;
  73                 fprintf(stderr, "course-id is mandatory\n");
  74                 goto cleanup;
  75         }
  76
  77         if (!target_arg &&
  78             !purge_arg) {
  79                 ret = EINVAL;
  80                 fprintf(stderr, "one of -t, -p is mandatory\n");
  81                 goto cleanup;
  82         } else if (target_arg &&
  83                    purge_arg) {
  84                 fprintf(stderr, "both -t and -p provided, ignoring -p\n");
  85                 purge_arg = 0;
  86         }
  87
  88         curl_global_init(CURL_GLOBAL_DEFAULT);
  89
  90         if (!(url_base = get_url_base())) {
  91                 ret = ENOENT;
  92
  93                 /* Error should have already been printed */
  94                 goto cleanup;
  95         }
  96
  97         if (!(auth_token = get_auth_token())) {
  98                 ret = ENOENT;
  99
 100                 /* Error should have already been printed */
 101                 goto cleanup;
 102         }
 103
 104         if (target_arg) {
 105                 target_ll = strtoll(target_arg, 0, 0);
 106                 len = snprintf(0, 0, "%lld", target_ll);
 107
 108                 if (len + 1 < len) {
 109                         ret = errno = EOVERFLOW;
 110                         perror(L(""));
 111                         goto cleanup;
 112                 }
 113
 114                 if (!(target = malloc(len + 1))) {
 115                         ret = errno;
 116                         perror(L("malloc"));
 117                         goto cleanup;
 118                 }
 119
 120                 sprintf(target, "%lld", target_ll);
 121
 122                 if (curl_formadd(&post, &postend, CURLFORM_PTRNAME,
 123                                  "move_assignments_to", CURLFORM_PTRCONTENTS,
 124                                  target,
 125                                  CURLFORM_END)) {
 126                         ret = errno;
 127                         perror(L("curl_formadd"));
 128                         goto cleanup;
 129                 }
 130         }
 131
 132         len = snprintf(0, 0, "%s/api/v1/courses/%s/assignment_groups/%s",
 133                        url_base, course_id, group_id);
 134
 135         if (len + 1 < len) {
 136                 ret = errno = EOVERFLOW;
 137                 perror(L(""));
 138                 goto cleanup;
 139         }
 140
 141         if (!(built_uri = malloc(len + 1))) {
 142                 ret = errno;
 143                 perror(L("malloc"));
 144                 goto cleanup;
 145         }
 146
 147         sprintf(built_uri, "%s/api/v1/courses/%s/assignment_groups/%s",
 148                 url_base, course_id, group_id);
 149
 150         if ((ret = send_and_id_scan(built_uri, auth_token, post, "DELETE",
 151                                     &deleted_id))) {
 152                 goto cleanup;
 153         }
 154
 155         if (deleted_id) {
 156                 printf("%s\n", deleted_id);
 157         }
 158
 159         ret = 0;
 160 cleanup:
 161         free(deleted_id);
 162         curl_formfree(post);
 163         free(built_uri);
 164         free(target);
 165         free(url_base);
 166         free(auth_token);
 167         curl_global_cleanup();
 168
 169         return ret;
 170 }