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annotate scid/crud.c @ 27:dae2de19ca5d

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misc: switch to JSON everywhere
author David Demelier <markand@malikania.fr>
date Wed, 03 Aug 2022 15:18:09 +0200
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children 695637f1d8a7
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27
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1 /*
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2 * crud.c -- convenient helpers for page-api-*
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3 *
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4 * Copyright (c) 2021 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include "log.h"
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20 #include "page.h"
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21
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22 static int
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23 save(struct kreq *r, int (*saver)(json_t *), const char *topic)
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24 {
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25 json_t *doc;
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26 json_error_t err;
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27 int ret = -1;
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28
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29 if (!(doc = json_loads(r->fields[0].val, 0, &err)))
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30 log_warn("%s: invalid JSON input: %s", topic, err.text);
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31 else {
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32 if (saver(doc) < 0)
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33 log_warn("%s: database insertion failed", topic);
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34 else
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35 ret = 0;
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36
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37 json_decref(doc);
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38 }
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39
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40 return ret;
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41 }
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42
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43 void
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44 crud_insert(struct kreq *r, int (*saver)(json_t *), const char *topic)
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45 {
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46 if (r->fieldsz < 1)
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47 page(r, KHTTP_400, KMIME_APP_JSON, NULL, NULL);
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48 else if (save(r, saver, topic) < 0)
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49 page(r, KHTTP_500, KMIME_APP_JSON, NULL, NULL);
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50 else {
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51 khttp_head(r, kresps[KRESP_CONTENT_TYPE], "%s", kmimetypes[KMIME_APP_JSON]);
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52 khttp_head(r, kresps[KRESP_STATUS], "%s", khttps[KHTTP_200]);
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53 khttp_body(r);
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54 khttp_free(r);
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55 }
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56 }
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57
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58 void
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59 crud_list(struct kreq *r, json_t *doc)
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60 {
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61 char *str;
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62
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63 if (!doc)
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64 page(r, KHTTP_500, KMIME_APP_JSON, NULL, NULL);
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65 else {
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66 if (!(str = json_dumps(doc, JSON_COMPACT)))
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67 page(r, KHTTP_500, KMIME_APP_JSON, NULL, NULL);
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68 else {
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69 khttp_head(r, kresps[KRESP_CONTENT_TYPE], "%s", kmimetypes[KMIME_APP_JSON]);
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70 khttp_head(r, kresps[KRESP_STATUS], "%s", khttps[KHTTP_200]);
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71 khttp_body(r);
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72 khttp_printf(r, "%s", str);
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73 khttp_free(r);
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74 json_decref(doc);
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75 }
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76
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77 free(str);
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78 }
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79 }